CN111348426B

CN111348426B - Fixed transportation device

Info

Publication number: CN111348426B
Application number: CN202010163846.2A
Authority: CN
Inventors: 付卓; 陈警; 张津瑞; 赵思宇; 杨泽宇; 孙墨林
Original assignee: Changsha University
Current assignee: Changsha University
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-06-15
Anticipated expiration: 2040-03-10
Also published as: CN111348426A

Abstract

The invention provides a fixed conveying device which comprises a translation mechanism, a telescopic device, a clamping plate, an installation support, a screw rod driving mechanism and a conveyor belt assembly. The packaging box with the detachable end face can be directionally deformed and folded, secondary damage cannot be caused in the process of transporting and flattening the packaging box, effective help is provided for subsequent recovery of the packaging box and secondary utilization of the packaging box in the logistics industry, the packaging box is practical and feasible, the problem of increasing express garbage is effectively relieved, the recovery utilization rate of the packaging box is improved, resource waste is reduced, environmental pollution can be reduced as far as possible, and the pace of conversion from China to green logistics is accelerated.

Description

Fixed transportation device

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a fixed conveying device.

Background

With the rapid development of electronic commerce, online shopping has become a novel consumption mode of modern society, so that the use of express packaging boxes is increasingly widespread. According to the monitoring data of a certain department of the country, the national express delivery business volume is 206 hundred million pieces in 2015, the year-by-year increase is 48%, more than 15 hundred million pieces of packages are generated in 2017 in the double 11 period, and at least 30 million tons of garbage are generated in 15 hundred million pieces of express delivery according to the conservative calculation of 0.2 kilogram standard of each packing box in the industry. The problem of express rubbish, resource waste and environmental pollution caused by the fact that express packaging boxes are used in large quantities is solved if huge express order data are hidden behind the express packaging boxes. At present, there are two kinds of main modes to the recovery of express delivery packing carton at home, one kind is the carton after directly throwing into to flatten, one kind is automatic with the carton crushing. However, the two modes have great limitation in the aspects of package box structural integrity and machine recycling capacity, the recycled package boxes are difficult to recycle, the recycling rate of the package boxes is less than 10%, and a great amount of resource waste is caused. Moreover, in the recycling process, the packaging boxes are conveyed through the conveying belt, and the subsequent compression process is also influenced by the fact that the packaging boxes are different in size.

Disclosure of Invention

The invention mainly aims to provide a fixed conveying device, and aims to solve the problems of inconvenient conveying and recycling compression caused by different sizes of packing boxes in the prior art.

In order to achieve the above object, the present invention provides a fixed transportation device, including:

a translation mechanism;

the upper end of the telescopic device is arranged on the translation mechanism and can move on the translation mechanism;

the clamping plate is fixedly arranged at the lower end of the telescopic device;

the mounting bracket comprises a mounting plate, a guide rod and a screw rod, the guide rod and the screw rod are arranged in parallel, the upper end of the guide rod is connected with the clamping plate, the lower end of the guide rod is connected with the mounting plate, the upper end of the screw rod is connected with the clamping plate, and the lower end of the screw rod is connected with the mounting plate;

the screw rod driving mechanism can drive the screw rod to rotate so as to drive the mounting plate to approach or move away from the clamping plate;

a conveyor belt assembly disposed on the mounting plate on a side thereof proximate the clamp plate.

The fixed conveying device can simultaneously complete the compression of the packing boxes in the process of conveying the packing boxes. After the last packing carton is handled, translation mechanism drive telescoping device moves to initial position in the plane, and the telescoping device control height coordinate transports the splint and is used for putting into the entrance of packing carton, makes the packing carton get into between splint and the mounting panel again. The telescopic device is hung on the translation mechanism and can adjust the upper and lower positions of the clamping plate so as to adapt to the treatment of packaging boxes with different sizes. After the packing carton is pushed to the definite position on falling the mounting panel simultaneously, lead screw actuating mechanism drive lead screw rotates and draws close to splint in order to drive the mounting panel to the interval between splint and the mounting panel is changed through the rising of control mounting panel, makes splint can press from both sides the not packing carton of unidimensional tightly. In the process, the guide rod between the clamping plate and the mounting plate plays a role in restraining and guiding. After the packaging box is clamped, the coordinates of the packaging box in all directions are changed through the translation mechanism and the telescopic device, and the packaging box is conveyed to all working positions. After the terminal surface of packing carton was opened by other equipment completely, the conveyer belt subassembly on the mounting panel began to move, and screw drive mechanism also drives the mounting panel and further draws close to splint simultaneously, and the packing carton begins to be flattened along the crest line under the clamping force of splint and the horizontal power's of conveyer belt subassembly cooperation this moment, later is sent other positions to carry out recovery compression processing on next step. Then, the screw rod driving mechanism drives the screw rod to rotate reversely so as to drive the mounting plate to be away from the clamping plate, and the translation mechanism drives the telescopic device to return to the initial position again.

The packaging box with the detachable end face can be directionally deformed and folded, secondary damage cannot be caused in the process of transporting and flattening the packaging box, effective help is provided for subsequent recovery of the packaging box and secondary utilization of the packaging box in the logistics industry, the packaging box is practical and feasible, the problem of increasing express garbage is effectively relieved, the recovery utilization rate of the packaging box is improved, resource waste is reduced, environmental pollution can be reduced as far as possible, and the pace of conversion from China to green logistics is accelerated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a perspective view of a stationary transport unit of the present invention;

FIG. 2 is a perspective view of another perspective of the stationary transport apparatus of the present invention;

FIG. 3 is a front view of the fixed transportation unit of the present invention;

FIG. 4 is a right side view of the fixed transport unit of the present invention;

FIG. 5 is a bottom view of the fixed transportation device of the present invention;

FIG. 6 is a schematic view of the process of securing the transport device to flatten the package in accordance with the present invention;

FIG. 7 is a perspective view of the telescoping device of the stationary transport unit of the present invention shown prior to extension;

FIG. 8 is a perspective view of the non-extended front portion of the telescoping device of the stationary transport unit of the present invention;

FIG. 9 is a perspective view of the non-extended front portion of the telescoping device of the fixed transportation device of the present invention from another perspective;

FIG. 10 is a perspective view of the two-stage telescoping pole of the fixed transportation device of the present invention extending to a second extreme position;

FIG. 11 is a perspective view of a portion of the fixed transportation unit of the present invention shown in a first perspective when the two-stage telescoping pole is extended to a second extreme position;

FIG. 12 is a perspective view of the two-stage telescoping pole of the fixed transportation device of the present invention shown partially in another perspective view when extended to a second extreme position;

FIG. 13 is a perspective view of the primary telescoping rod of the fixed transportation device of the present invention extending to a first limit position;

FIG. 14 is a perspective view of a portion of the primary telescoping pole of the fixed transportation device of the present invention shown in a first position;

FIG. 15 is a perspective view of the primary telescoping pole of the fixed transportation device of the present invention shown partially in another perspective view as it extends to the first extreme position;

FIG. 16 is a schematic cross-sectional view of the telescoping device of the stationary transport unit of the present invention shown prior to extension;

FIG. 17 is a schematic partial cross-sectional view of the first-stage telescopic rod and the second-stage telescopic rod of the telescopic device according to the present invention when locked together;

FIG. 18 is an exploded view of the locking mechanism of the retractor of the present invention.

The reference numbers illustrate:

100. a telescoping device; 10. a primary telescoping mechanism; 11. a first-stage telescopic rod; 111. a primary mount; 1111. acting surface; 1112. a first connection face; 112. a primary lever body; 1121. a friction ring; 1122. a slide hole; 12. a primary driving wheel; 113. a second abutting surface; 114. a first step surface; 121. a first-stage jack; 13. a first-stage thimble; 131. a primary movable rod; 132. a first-stage inserted link; 133. a primary drive member; 134. a first connection block; 20. a secondary telescoping mechanism; 21. a secondary telescopic rod; 211. a secondary mounting base; 2111. a second connection face; 212. a secondary lever body; 2121. locking the jack; 213. a second step surface; 22. a secondary driving wheel; 221. a secondary jack; 23. a second-stage thimble; 231. a secondary movable rod; 232. a second-stage inserted link; 233. a secondary drive member; 234. a second connecting block; 30. a base; 31. a sleeve; 311. a first abutting surface; 32. a screw; 33. a telescopic driving mechanism; 331. a bevel gear; 332. a telescopic motor; 40. a linkage mechanism; 41. a pull rod; 411. a first draw hook; 412. a second draw hook; 42. a hinged lever; 50. a locking mechanism; 51. inserting a block; 511. a first inclined surface; 52. a compression spring; 53. a slider; 531. a second inclined surface;

300. packaging boxes;

600. fixing the transportation device; 610. a translation mechanism; 611. a slide rail assembly; 612. a track; 613. the slide rail pulls the belt; 6131. a first roller shaft; 614. a slide rail motor; 615. a slide bar assembly; 616. a post rod; 617. the sliding rod pulls the belt; 618. a sliding seat; 619. a slide bar motor; 620. a splint; 630. mounting a bracket; 631. mounting a plate; 632. a screw rod; 633. a guide bar; 640. a screw rod driving mechanism; 641. a screw driving gear; 642. a screw driven gear; 643. a drive shaft; 6431. a bearing seat; 650. a conveyor belt assembly; 651. a conveyor belt motor.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The description of the orientations of "front", rear ", etc. in the present invention is based on the orientation shown in fig. 16, and is merely for explaining the relative positional relationship between the respective components in the posture shown in fig. 16, and if the specific posture is changed, the directional indication is changed accordingly.

As shown in fig. 1 to 5, the present invention proposes a fixed transporter 600, which includes a translation mechanism 610, a telescopic device 100, a clamping plate 620, a mounting bracket 630, a screw driving mechanism 640, and a conveyor belt assembly 650. Wherein, the upper end (corresponding to the rear end in fig. 16) of the telescopic device 100 is disposed on the translation mechanism 610 and can move on the translation mechanism 610, and the movement of the telescopic device 100 relative to the translation mechanism 610 can be driven by disposing an electric push rod on the translation mechanism 610, or can also be realized by matching a servo motor and a lead screw nut, and a more preferred implementation manner will be described below. The clamping plate 620 is fixedly arranged at the lower end of the telescopic device 100; the mounting bracket 630 comprises a mounting plate 631, a guide rod 633 and a screw rod 632, wherein the guide rod 633 and the screw rod 632 are arranged in parallel, the upper end of the guide rod 633 is connected with the clamping plate 620, the lower end of the guide rod 633 is connected with the mounting plate 631, the upper end of the screw rod 632 is connected with the clamping plate 620, and the lower end of the screw rod 632 is connected with the mounting plate 631; the screw rod driving mechanism 640 can drive the screw rod 632 to rotate so as to drive the mounting plate 631 to move towards or away from the clamping plate 620; a conveyor belt assembly 650 is disposed on the mounting plate 631 on a side thereof adjacent the clamp plate 620. The fixed transporting device 600 of the present embodiment is mainly applied to transporting the packing box 300, the packing box 300 is generally a rectangular parallelepiped structure, the two opposite sides of the packing box 300 have openings, and the packing box 300 can be placed between the conveyor belt assembly 650 and the clamping plate 620 for transportation.

The stationary transporting apparatus 600 of the present invention can simultaneously perform the compression of the packing box 300 in the process of transporting the packing box 300. After the previous compact 300 is processed, translation mechanism 610 drives retraction mechanism 100 to move in-plane to the initial position, and retraction mechanism 100 controls the height coordinate, transports clamp 620 to the entrance for placing compact 300, and then brings compact 300 between clamp 620 and mounting plate 631 (which may be manually placed). Telescoping device 100 is suspended from translation mechanism 610 and is capable of adjusting the vertical position of clamp plate 620 to accommodate handling of different sized packages 300. When the packing box falls on the mounting plate 631 and is pushed to a certain position, the screw driving mechanism 640 drives the screw 632 to rotate to drive the mounting plate 631 to approach the clamping plate 620, so that the distance between the clamping plate 620 and the mounting plate 631 is changed by controlling the ascending of the mounting plate 631, and the clamping plate 620 can clamp packing boxes 300 with different sizes. In this process, the guide rods 633 between the clamp plate 620 and the mounting plate 631 perform a restraining guide function. After the package 300 is clamped, the coordinates of the package 300 in each direction are changed by the translation mechanism 610 and the retractable device 100, and the package 300 is transported to each working position. When the end face of the packing box 300 is completely opened by other devices, the conveyor belt assembly 650 on the mounting plate 631 moves, and simultaneously the screw driving mechanism 640 drives the mounting plate 631 to further close to the clamping plate 620, at this time, the packing box 300 starts to be flattened along the ridge line under the matching action of the clamping force of the clamping plate 620 and the transverse force of the conveyor belt assembly 650, and then the packing box 300 is matched by the translation mechanism 610 and the conveyor belt assembly 650 to be sent to other positions for the next recycling and compressing process. Then, the screw driving mechanism 640 drives the screw 632 to rotate reversely to drive the mounting plate 631 to move away from the clamp plate 620, and the translating mechanism 610 drives the telescopic device 100 to return to the initial position again.

As shown in fig. 6, in the process of transporting the packing box 300, the fixing and transporting device 600 of the present embodiment may preset that the adhesive tapes at the openings on the two opposite sides of the packing box 300 are unsealed in advance. As shown in fig. 6(a), a pack 300 is held between clamp plate 620 and conveyor assembly 650, and when conveyor assembly 650 is activated, conveyor assembly 650 moves the lower side of pack 300 to the left in the drawing, and as shown in fig. 6(b), the upper side and the lower side of pack 300 form a speed difference, so that pack 300 starts to be flattened along the ridge line. The collapsed package 300 then continues to follow the leftward movement of conveyor assembly 650 to the next station. The conveyor belt assembly 650 includes a plurality of rollers and a conveyor belt sleeved on the rollers, and at least one roller is driven by a conveyor belt motor 651 to drive the entire conveyor belt to move.

Therefore, the packaging box 300 with the disassembled end face can be directionally deformed and folded, secondary damage cannot be caused in the process of transporting and flattening the packaging box 300, effective help is provided for subsequent recycling of the packaging box 300 and secondary utilization of the packaging box 300 in the logistics industry, the packaging box is practical and feasible, the increasing problem of express garbage is effectively relieved, the recycling rate of the packaging box 300 is improved, resource waste is reduced, environmental pollution can be reduced as far as possible, and the pace of conversion from green logistics to green logistics in China is accelerated.

In a preferred embodiment, referring again to fig. 1 and 2, the translation mechanism 610 includes a slide bar assembly 615 and a pair of slide rail assemblies 611, the pair of slide rail assemblies 611 being disposed parallel to each other; the sliding bar assembly 615 is positioned between the pair of sliding rail assemblies 611 and the end of the sliding bar assembly 615 can slide on the sliding rail assemblies 611; the upper end of the telescopic device 100 is slidably disposed on the sliding bar assembly 615. Specifically, the sliding rod assembly 615 can slide on the sliding rail assembly 611 in the X direction, the telescopic device 100 can slide on the sliding rod assembly 615 in the Y direction, and then the telescopic device 100 can be vertically telescopic in the Z direction, and two of the three directions of XYZ are perpendicular to each other to form a spatial coordinate system, so that the clamping plate 620 can move in different directions in a three-dimensional space, and further, the packing box 300 can be transported to a predetermined position in the three-dimensional space.

The sliding rod assembly 615 and the sliding rail assembly 611 may have various structures, as long as the sliding along the predetermined direction can be achieved. The sliding rail assembly 611 may preferably include a rail 612 and a sliding rail pulling belt 613, which are disposed parallel to each other, and the sliding rail pulling belt 613 may be rotatably mounted on the frame by a pair of first roller shafts 6131, and the sliding rail motor 614 drives one of the first roller shafts 6131 to rotate, so as to move the sliding rail pulling belt 613. The sliding bar assembly 615 may include a pair of sliding blocks 618 and a post 616 and a sliding bar pull belt 617 disposed parallel to each other; the sliding bases 618 are correspondingly installed on the rail 612, at least one sliding base 618 is fixedly installed on the sliding track pulling belt 613, and the sliding track pulling belt 613 can drive the sliding base 618 to slide on the rail 612 in the X direction. The end of the post 616 and the sliding rod pulling belt 617 are both disposed on the sliding base 618, wherein the sliding rod pulling belt 617 can be rotatably mounted on the sliding base 618 through a pair of second roller shafts (not numbered), the second roller shafts are disposed in one-to-one correspondence with the sliding base 618, and the sliding rod motor 619 disposed on the sliding base 618 drives one of the second roller shafts to rotate, so as to drive the sliding rod pulling belt 617 to move. The upper end of the telescopic device 100 is slidably disposed on the post 616 and fixedly connected to the sliding rod pulling belt 617, and the sliding rod pulling belt 617 can drive the telescopic device 100 to slide on the post 616 in the Y direction. The telescopic device 100 can be driven by the telescopic motor 332 to extend and contract in the Z direction.

Referring to fig. 3 to 5 again, the screw driving mechanism 640 is disposed on the mounting plate 631, and the screw driving mechanism 640 includes a screw motor (not shown), a transmission shaft 643 driven by the screw motor to rotate, a screw driving gear 641 disposed on the transmission shaft 643, and a screw driven gear 642 disposed at the lower end of the screw 632, the screw driving gear 641 is engaged with the screw driven gear 642 for transmission, the screw motor drives the transmission shaft 643 to rotate, and further transmits torque to the screw 632 through the screw driving gear 641 and the screw driven gear 642, so that the mounting plate 631 and the clamp plate 620 can move relatively, wherein both the screw driving gear 641 and the screw driven gear 642 can be bevel gears.

In order to improve the balance, the number of the lead screws 632 may be multiple, the multiple lead screws 632 are mounted on the mounting plate 631 at intervals through bearings, the upper ends of the lead screws 632 are connected with lead screw nuts fixed on the clamp plate 620, through holes are formed in the clamp plate 620, and the lead screw nuts are fixedly mounted in the through holes; in order to ensure the guiding reliability, the number of the guide rods 633 can also be multiple, the lower ends of the guide rods 633 are fixed on the mounting plate 631, and the upper ends of the guide rods 633 are movably sleeved on the clamping plate 620. The optimal arrangement is that the screw 632 and the guide rod 633 are distributed diagonally, so as to balance the stress of each corner of the mounting plate 631 and prolong the service life. In the above embodiment, the screw motor and the screw driving gear 641 are disposed on the bottom surface of the mounting plate 631, the transmission shaft 643 is rotatably mounted in the bearing seat 6431 on the bottom surface of the mounting plate 631, and the screw driving gear 641 is disposed at both ends of the transmission shaft 643, and the output shaft of the screw motor is engaged with the spur gear at the middle of the transmission shaft 643 through the spur gear, so that the respective mechanisms can be reasonably arranged to prevent interference. In other embodiments, the screw motor and the screw driving gear 641 may also be installed on the upper surface of the clamping plate 620, in this case, a plurality of screws 632 are installed on the clamping plate 620 at intervals through bearings, and the lower ends of the screws 632 are in threaded connection with the mounting plate 63; the upper ends of the guide rods 633 are fixed on the clamping plate 620, and the lower ends of the guide rods 633 are movably sleeved on the mounting plate 631. No matter which installation method is adopted, a limit nut can be arranged on one side of the movable end of the guide rod 633, which is far away from the fixed end, so as to prevent the guide rod 633 from being separated from the clamping plate 620 or the installation plate 631.

The telescopic device of this embodiment may be of various structures, and is not limited to a one-stage telescopic device, a multi-stage telescopic device or a continuous telescopic device, for example, a pneumatic telescopic cylinder, a hydraulic telescopic cylinder, a scissor lift or an electric push rod with a large size suspended on the translation mechanism 610, so long as the clamp plate 620 and the mechanism mounted on the clamp plate 620 can move up and down. As shown in fig. 7 to 16, the telescopic device 100 of the present embodiment is preferably a multi-stage telescopic device, the telescopic device 100 includes a base 30, a first stage telescopic mechanism 10 and a second stage telescopic mechanism 20, the base 30 is disposed on the translation mechanism 610, and the base 30 includes a sleeve 31, a screw 32 rotatably mounted in the sleeve 31, and a telescopic driving mechanism 33 for driving the screw 32 to rotate.

Wherein, one-level telescopic machanism 10 includes one-level telescopic link 11, one-level drive wheel 12 and one-

level thimble

13, and 11 sliding sleeve of one-level telescopic link are located in sleeve 31, and one-level telescopic link 11 carries out the axial spacing to one-level drive wheel 12 to prevent 12 axial drunkenness of one-level drive wheel. The primary driving wheel 12 is sleeved outside the screw rod 32 and meshed with the screw rod 32, the primary ejector pin 13 is connected with the primary telescopic rod 11, and the primary ejector pin 13 is used for locking or releasing the primary driving wheel 12 so as to cooperate with the primary driving wheel 12 to drive the primary telescopic rod 11 to extend out of a first initial position to a first limit position or retract to the first initial position from the first limit position relative to the sleeve 31; the second-stage telescopic mechanism 20 comprises a second-stage telescopic rod 21, a second-stage driving wheel 22 and a second-stage ejector pin 23, the second-stage telescopic rod 21 is slidably sleeved in the first-stage telescopic rod 11, and the second-stage telescopic rod 21 axially limits the second-stage driving wheel 22 to prevent the second-stage driving wheel 22 from axially moving. The secondary driving wheel 22 is sleeved outside the screw rod 32 and meshed with the screw rod 32, the secondary ejector pin 23 is connected with the secondary telescopic rod 21, and the secondary ejector pin 23 is used for locking or releasing the secondary driving wheel 22 so as to cooperate with the secondary driving wheel 22 to drive the secondary telescopic rod 21 to extend out of the second initial position to the second limit position or retract from the second limit position to the second initial position relative to the primary telescopic rod 11. Wherein, the free end of the two-stage telescopic rod 21 is fixedly provided with a clamping plate 620.

It should be noted that, the first initial position of this embodiment refers to a position where the free end of the one-stage telescopic rod 11 does not slide relative to the sleeve 31, and the free end thereof is close to the free end of the sleeve 31, and the first extreme position is an extreme position where the free end of the one-stage telescopic rod 11 slides and extends away from the sleeve 31; the second initial position is a position where the free end of the secondary telescopic rod 21 does not slide relative to the primary telescopic rod 11 and is close to the free end of the primary telescopic rod 11, and the second limit position is a limit position where the free end of the secondary telescopic rod 21 slides and extends away from the primary telescopic rod 11. As shown in fig. 16, the extending direction of the first telescopic rod 11 and the second telescopic rod 21 is a forward direction, and the retracting direction of the first telescopic rod 11 and the second telescopic rod 21 is a backward direction.

When the expansion device 100 of the present embodiment needs to expand, the expansion driving mechanism 33 drives the screw rod 32 to rotate, the first-stage thimble 13 releases the first-stage driving wheel 12, the first-stage driving wheel 12 rotates along with the rotation of the screw rod 32 and is temporarily in an idle state, and the first-stage expansion rod 11 does not expand or contract relative to the sleeve 31 and is kept at the first initial position; and the secondary thimble 23 locks the secondary driving wheel 22, the secondary driving wheel 22 moves forward along with the rotation of the screw rod 32, and then the secondary telescopic rod 21 is driven to slide forward relative to the primary telescopic rod 11 and extend out, so that the secondary telescopic rod 21 extends out from the second initial position to the second limit position, the first extension of the telescopic device 100 is realized, at this time, the secondary thimble 23 releases the secondary driving wheel 22, and the secondary driving wheel 22 is in a temporary idle running state. Then, the primary thimble 13 locks the primary driving wheel 12, the primary driving wheel 12 moves forward along with the rotation of the screw 32, and further drives the primary telescopic rod 11 to slide forward and extend relative to the sleeve 31, so that the primary telescopic rod 11 extends from the first initial position to the first limit position, and the secondary extension of the telescopic device 100 is realized. Understandably, because the secondary telescopic rod 21 is sleeved on the primary telescopic rod 11, the secondary telescopic rod 21 can be driven to continuously move forward in the process of extending the primary telescopic rod 11, and the two continuous and orderly extending processes of the telescopic device 100 are ensured. In actual use, whether only the first elongation or the second elongation is performed may be selected according to the size of package 300.

When the telescopic device 100 of the embodiment needs to retract, the telescopic driving mechanism 33 drives the screw rod 32 to rotate reversely, the one-level thimble 13 locks the one-level driving wheel 12, the one-level driving wheel 12 moves backwards along with the reverse rotation of the screw rod 32, and then drives the one-level telescopic rod 11 to slide backwards and retract relative to the sleeve 31, so that the one-level telescopic rod 11 retracts to the first initial position from the first limit position, the first retraction of the telescopic device 100 is realized, at the moment, the one-level thimble 13 releases the one-level driving wheel 12, and the one-level driving wheel 12 returns to the idle running state again. Then, the secondary thimble 23 locks the secondary driving wheel 22, and the secondary driving wheel 22 moves backward along with the reverse rotation of the screw rod 32, so as to drive the secondary telescopic rod 21 to slide backward and retract relative to the primary telescopic rod 11, so that the secondary telescopic rod 21 retracts from the second limit position to the second initial position, thereby implementing the second retraction of the telescopic device 100. Understandably, because the secondary telescopic rod 21 is sleeved on the primary telescopic rod 11, the secondary telescopic rod 21 can be driven to move backwards simultaneously in the retraction process of the primary telescopic rod 11, and the two continuous and orderly retraction processes of the telescopic device 100 are ensured.

The expansion device 100 of the present embodiment may be a two-stage expansion device, a three-stage expansion device, a four-stage expansion device, or the like, and the present embodiment is described by taking a two-stage expansion device as an example. For example, in the three-stage telescopic device, a three-stage telescopic rod can be added on the basis of the two-stage telescopic device, the three-stage telescopic rod can be slidably sleeved in the two-stage telescopic rod 21, and the assembling mode between the three-stage telescopic rod and the two-stage telescopic rod 21 is similar to the assembling mode and the telescopic mode between the two-stage telescopic rod 21 and the one-stage telescopic rod 11, and the details are not repeated herein. For another example, the four-stage telescopic device may be added with a four-stage telescopic rod on the basis of the three-stage telescopic device, the four-stage telescopic rod is slidably sleeved in the three-stage telescopic rod, and the assembling manner between the four-stage telescopic rod and the three-stage telescopic rod is similar to the assembling and telescopic manner between the two-stage telescopic rod 21 and the one-stage telescopic rod 11 and between the three-stage telescopic rod and the two-stage telescopic rod 21, which is not described herein again.

The telescopic device 100 of the present embodiment employs a screw transmission manner in which the screw 32 is engaged with the primary driving wheel 12 and the secondary driving wheel 22 to achieve two times of continuous and orderly telescopic of the telescopic device 100, and compared with the prior art employing a hydraulic driving manner or a dual-motor driving manner, the telescopic device 100 of the present embodiment does not need to additionally design an oil cylinder and an oil circuit, does not need to consider the sealing problem, and does not cause the oil pollution problem, good reliability, convenient maintenance, no need of additionally designing a control method of double motors, no need of adding circuits or singlechips and the like, simple structure and easy manufacture, reduces the design burden, moreover, the telescoping process of the telescoping device 100 of the present embodiment is performed in the sleeve 31, so that the occupied volume is small, the weight of the telescopic device 100 is reduced, the cost is saved, and the advantages are more obvious under the condition that the number of telescopic stages is more. In addition, this embodiment adopts screw rod 32 and device to adopt screw rod 32 and the spiral transmission mode of one-level drive wheel 12 and the meshing of second grade drive wheel 22, and it belongs to the cooperation of relatively accurate mechanical transmission, and the flexible length of one-level telescopic link 11 and second grade telescopic link 21 is accurately controlled to the number of turns of rotation of accessible screw rod 32, and then can the whole telescoping device 100 of accurate control flexible stroke, excellent in use effect.

In this embodiment, the secondary driving wheel 22 is provided with a secondary jack 221, the secondary thimble 23 includes a secondary movable rod 231, a secondary insertion rod 232 and a secondary driving member 233, which are respectively connected with the secondary movable rod 231, and the secondary movable rod 231 is in sliding fit with the secondary telescopic rod 21; when the secondary expansion link 21 is at the second initial position, the secondary driving member 233 can drive the secondary movable rod 231 to drive the secondary insertion rod 232 to be inserted into the secondary insertion hole 221 and lock the secondary driving wheel 22, or when the secondary expansion link 21 extends to the second limit position, the secondary insertion rod 232 is separated from the secondary insertion hole 221 and releases the secondary driving wheel 22; when the secondary telescopic rod 21 is at the second limit position, the secondary driving wheel 22 is disengaged from the screw 32. It should be noted that the second initial position of the two-stage telescopic rod 21 refers to both the initial position before the two-stage telescopic rod 21 starts to extend and the position where the two-stage telescopic rod 21 is fully retracted.

The secondary driving wheel 22 of the present embodiment can use a ratchet wheel in the prior art, and can also use a nut or a nut-like wheel in the prior art which can be engaged with the screw 32, and the secondary driving wheel 22 of the present embodiment is illustrated as a ratchet wheel. The number of the secondary insertion holes 221 is multiple, and the multiple secondary insertion holes 221 are uniformly arranged along the circumferential direction of the secondary driving wheel 22 at intervals, so that the secondary insertion rod 232 can be conveniently inserted into any one secondary insertion hole 221 to lock the secondary driving wheel 22 in the rotating process of the secondary driving wheel 22. Specifically, when the secondary expansion link 21 is at the second initial position, the secondary driving member 233 drives the secondary movable rod 231 to drive the secondary insertion rod 232 to be inserted into any one of the secondary insertion holes 221, so as to lock the secondary driving wheel 22, until the secondary driving wheel 22 drives the secondary expansion link 21 to extend to the second initial position, the secondary driving member 233 drives the secondary movable rod 231 to drive the secondary insertion rod 232 to disengage from the secondary insertion hole 221, so as to release the secondary driving wheel 22, the secondary expansion link 21 stops extending, the secondary driving wheel 22 is in an idle running state, and the secondary driving wheel 22 is disengaged from the screw 32 at this time, so that the secondary expansion link 21 is not restrained by the screw 32 in the subsequent expansion process of the primary expansion link 11, and thus expands and contracts along with the expansion and contraction of.

As shown in fig. 7 to 16, in this embodiment, the secondary telescopic rod 21 includes a secondary mounting seat 211 and a secondary rod body 212, the secondary rod body 212 is connected to the secondary mounting seat 211, the secondary driving wheel 22 is mounted in the secondary mounting seat 211, and the secondary mounting seat 211 axially limits the secondary driving wheel 22 to prevent the secondary driving wheel 22 from axially moving; the second grade movable rod 231 slides and wears to locate second grade mount pad 211, and second grade inserted bar 232 is connected in the one end that second grade movable rod 231 kept away from second grade pole body 212, and second grade driving piece 233 is the second spring, and the first end and the second grade mount pad 211 of second spring are connected, and the second end of second spring is passed through second connecting block 234 and is connected with the one end of keeping away from second grade inserted bar 232 on second grade movable rod 231.

Specifically, a second step surface 213 is formed at the joint of the secondary rod body 212 and the secondary mounting seat 211, a second connection surface 2111 is formed in the secondary mounting seat 211, a first end of the second spring is connected with the second connection surface 2111, and a second abutting surface 113 is arranged on the primary telescopic rod 11 near the free end; when the secondary expansion link 21 is in the second initial position, the second connecting block 234 extends out of the second step surface 213 and the secondary insertion link 232 is inserted into the secondary insertion hole 221; when the secondary expansion link 21 extends to the second limit position, the second abutting surface 113 abuts against the second step surface 213 and pushes the second connecting block 234, so that the secondary movable rod 231 drives the secondary insertion rod 232 to disengage from the secondary insertion hole 221.

In this embodiment, the second-stage insertion rod 232 is connected to the rear end of the second-stage movable rod 231, and the front end of the second-stage movable rod 231 is connected to the second connection block 234. The second spring is a compression spring, the rear end of the compression spring is connected to the second connecting block 234, and the front end of the compression spring is connected to the second connecting surface 2111. When the secondary expansion link 21 is at the second initial position, due to the elastic force of the compression spring, the second connecting block 234 connected with the secondary movable rod 231 extends forwards to the second step surface 213, and the secondary inserted rod 232 is inserted into the secondary insertion hole 221, so as to lock the secondary driving wheel 22 until the secondary driving wheel 22 drives the secondary expansion link 21 to extend to the second limit position, when the secondary expansion link 21 extends to the second limit position, the second abutting surface 113 abuts against the second step surface 213 on the front side thereof, the second abutting surface 113 pushes the second connecting block 234 to move backwards, and further the secondary movable rod 231 is driven to slide backwards relative to the secondary mounting seat 211, so that the secondary inserted rod 232 is separated from the secondary insertion hole 221, so as to release the secondary driving wheel 22, and the secondary expansion link 21 stops extending. The structural design of each component of the secondary telescoping mechanism 20 of this embodiment is reasonable and ingenious, and the first extension process of the telescoping device 100 is conveniently realized. Alternatively, in other embodiments, the secondary movable rod 231 may be a relatively small electric telescopic rod to drive the secondary insertion rod 232 to move to lock or release the secondary driving wheel 22.

In this embodiment, the primary driving wheel 12 is provided with a primary jack 121, the primary thimble 13 includes a primary movable rod 131, a primary inserted rod 132 and a primary driving member 133 respectively connected to the primary movable rod 131, and the primary movable rod 131 is in sliding fit with the primary telescopic rod 11; when the primary telescopic rod 11 is at the first initial position, the primary inserted link 132 is disengaged from the primary insertion hole 121 and releases the primary driving wheel 12, or when the secondary telescopic rod 21 extends to the second limit position, the primary driving member 133 can drive the primary movable rod 131 to drive the primary inserted link 132 to be inserted into the primary insertion hole 121 and lock the primary driving wheel 12; when the primary telescopic rod 11 is at the first limit position, the primary driving wheel 12 and the screw 32 are kept in a meshed state. It should be noted that the first initial position of the first telescopic rod 11 refers to both the initial position before the first telescopic rod 11 starts to extend and the position where the first telescopic rod 11 is fully retracted.

The primary driving wheel 12 of the present embodiment may be a ratchet wheel as in the prior art, or a nut-like wheel as in the prior art which can engage with the screw 32, and the primary driving wheel 12 of the present embodiment is illustrated as a ratchet wheel. The number of the first-stage insertion holes 121 is multiple, and the multiple first-stage insertion holes 121 are uniformly arranged along the circumferential direction of the first-stage driving wheel 12 at intervals, so that the first-stage insertion rods 132 can be inserted into any one of the first-stage insertion holes 121 to lock the first-stage driving wheel 12 in the rotating process of the first-stage driving wheel 12. Specifically, when one-level telescopic link 11 is in first initial position, one-level driving piece 133 drives one-level movable rod 131 and drives one-level inserted bar 132 and break away from one-level jack 121, thereby release one-level drive wheel 12, one-level drive wheel 12 is in temporary idle running state, one-level telescopic link 11 does not stretch out and draw back for sleeve 31, keep at first initial position, until second telescopic link 21 stretches out to the second extreme position when, one-level driving piece 133 drives one-level movable rod 131 and drives one-level inserted bar 132 and insert in arbitrary one-level jack 121, in order to lock one-level drive wheel 12, until one-level drive wheel 12 drive second telescopic link 21 stretches out to first extreme position, guarantee that one-level telescopic link 11 and second telescopic link 21 stretch out. When the first-stage telescopic rod 11 is at the first limit position, the first-stage driving wheel 12 and the screw 32 are kept in a meshed state, so that the normal extending process and the subsequent retracting process of the first-stage telescopic rod 11 are ensured.

As shown in fig. 7 to 16, in this embodiment, the primary telescopic rod 11 includes a primary mounting seat 111 and a primary rod body 112, the primary rod body 112 is connected to the primary mounting seat 111, the primary driving wheel 12 is mounted in the primary mounting seat 111, and the primary mounting seat 111 axially limits the primary driving wheel 12 to prevent the primary driving wheel 12 from axially moving. In the secondary telescopic rod 21 slip cap located first grade pole body 112, one-level movable rod 131 slides and wears to locate one-level mount pad 111, one-level inserted bar 132 is connected in one-level movable rod 131 one end that is close to one-level pole body 112, one-level driving piece 133 is first spring, the first end and the one-level mount pad 111 of first spring are connected, the second end of first spring is connected through the one end of keeping away from one-level inserted bar 132 on first connecting block 134 and the one-level movable rod 131.

Specifically, a first step surface 114 is formed at the joint of the primary lever body 112 and the primary mounting seat 111, an action surface 1111 is formed on one side of the primary mounting seat 111, which is away from the first step surface 114, and the first connecting block 134 extends out of the action surface 1111; a first connection surface 1112 is formed in the primary mounting seat 111, a first end of the first spring is connected with the first connection surface 1112, and a first abutting surface 311 is arranged on one side, facing the primary mounting seat 111, of the inner surface of the sleeve 31; when the primary telescopic rod 11 is at the first initial position, the first abutting surface 311 abuts against the action surface 1111 and pushes the first connecting block 134 to drive the primary inserting rod 132 to disengage from the primary inserting hole 121; the telescopic device 100 of the present embodiment further includes a linkage mechanism 40, when the secondary telescopic rod 21 extends to the second limit position, the linkage mechanism 40 pulls the primary telescopic rod 11 at the first initial position to start extending, and the primary telescopic rod 11 drives the primary driving wheel 12 to move so that the primary insertion rod 132 is inserted into the primary insertion hole 121.

In this embodiment, the first-stage insertion rod 132 is connected to the front end of the first-stage movable rod 131, and the rear end of the first-stage movable rod 131 is connected to the first connecting block 134. The first spring is a compression spring, the front end of the compression spring is connected to the first connection surface 1112, and the rear end of the compression spring is connected to the first connection block 134. When the first-stage telescopic rod 11 is at the first initial position, because the first abutting surface 311 abuts against the action surface 1111, the first connecting block 134 is pushed forward, the first connecting block 134 drives the first-stage insertion rod 132 to move forward, so as to drive the first-stage movable rod 131 and the first-stage insertion rod 132 to move forward and separate from the first-stage insertion hole 121, so as to release the first-stage driving wheel 12, the first-stage driving wheel 12 is in a temporary idle running state, until the second-stage telescopic rod 21 extends to the second limit position, that is, when the second-stage telescopic rod 21 extends completely, the second-stage telescopic rod 21 pulls the first-stage telescopic rod 11 at the first initial position to extend forward through the linkage mechanism 40, the first-stage telescopic rod 11 drives the first-stage driving wheel 12 to move forward in the process of moving forward of the first-stage telescopic rod 11, the action surface 1111 is separated from the first abutting surface 311, the first connecting block 134 extends out of the action surface 1111 again under the action of the first spring, and causes, so as to lock the primary driving wheel 12 until the primary driving wheel 12 drives the primary telescopic rod 11 to extend to the first limit position. The structural design of each component of the primary telescopic mechanism 10 of the embodiment is reasonable and ingenious, and the second extension process of the telescopic device 100 is convenient to realize. Alternatively, in other embodiments, the primary movable rod 131 may also be a relatively small electric telescopic rod to drive the primary insertion rod 132 to move to lock or release the primary driving wheel 12.

In a preferred embodiment, the linkage mechanism 40 includes a pull rod 41 and a hinge rod 42, wherein the pull rod 41 is slidably connected to the inner wall of the primary rod body 112, and a first hook 411 and a second hook 412 are respectively formed at two ends of the pull rod 41; the first drag hook 411 is hooked at the first end of the hinge rod 42, the first-stage movable rod 131 abuts against the second end of the hinge rod 42, and the position, between the first end and the second end, on the hinge rod 42 is hinged to the first-stage rod body 112 through a hinge shaft. When the secondary telescopic rod 21 extends to the second limit position, the second draw hook 412 is hooked on the secondary telescopic rod 21 and drives the pull rod 41 to move along the extending direction of the secondary telescopic rod 21 through the secondary telescopic rod 21, so that the second end of the hinge rod 42 rotates around the hinge shaft and simultaneously pulls the primary telescopic rod 11 at the first initial position to extend for a certain distance, and the pre-compressed first spring drives the primary mounting seat 111 to be far away from the first connecting block 134, so that the primary movable rod 131 pulls the primary insertion rod 132 to be inserted into the primary insertion hole 121; when the primary telescopic rod 11 is retracted to the first initial position, the first abutting surface 311 pushes the first connecting block 134, so that the primary movable rod 131 pushes the second end of the hinge rod 42 to rotate reversely around the hinge shaft, and the secondary telescopic rod 21 at the second limit position is pulled by the pull rod 41 to move along the retraction direction of the primary telescopic rod 11, so that the secondary driving wheel 22 is reengaged with the screw rod 32.

The rear end of the pull rod 41 forms a first draw hook 411, the first draw hook 411 is hooked on the upper end of the hinge rod 42, the first-stage movable rod 131 is abutted to the lower end of the hinge rod 42, and the middle position of the hinge rod 42 is hinged to the first-stage rod body 112 through a hinge shaft. The length of the pull rod 41 of this embodiment is set according to the actual use condition, and specifically, the distance between the first hook 411 and the second hook 412 is slightly smaller than the distance between the hinge shaft and the second step surface 213 when the distance is at the second limit position. When the secondary telescopic rod 21 extends to the second limit position, the second step surface 213 of the secondary telescopic rod 21 abuts against the second draw hook 412, so that the second draw hook 412 is hooked on the second step surface 213, and further the draw rod 41 is pulled to move forward by the forward pulling force of the secondary telescopic rod 21, the upper end of the hinge rod 42 is pulled to move forward in the pulling forward process, so that the lower end of the hinge rod 42 pushes the first-stage movable rod 131 backward, at this time, because the first connecting block 134 and the first abutting surface 311 abut against each other, the first-stage movable rod 131 cannot move backward, the hinge shaft moves forward under the reaction condition, and further the first-stage telescopic rod 11 at the first initial position is pulled to extend forward, so as to drive the first-stage driving wheel 12 to move forward relative to the first-stage movable rod 131, so that the first-stage insertion rod 132 is inserted into any one of the first-stage insertion holes 121, the first-stage driving wheel 12 is locked, and the first-stage, two continuous and sequential elongation processes of the telescopic device 100 are achieved.

When the first-stage telescopic rod 11 retracts from the first limit position to the first initial position, the first-stage inserted rod 132 is kept in a state of locking the first-stage driving wheel 12, until the first-stage telescopic rod 11 retracts to the first initial position, the action surface 1111 of the first-stage telescopic rod 11 abuts against the first abutting surface 311 of the sleeve 31, the first abutting surface 311 pushes the first-stage movable rod 131 to move forward, the lower end of the hinged rod 42 is driven to move forward in the process of moving forward the first-stage movable rod 131, the upper end of the hinged rod 42 moves backward, the pull rod 41 is pulled to move backward by the first pull hook 411, the second pull hook 412 pulls the second-stage telescopic rod 21 to move backward by the second step surface 213, in the process of moving backward the second-stage telescopic rod 21, the second-stage driving wheel 22 is reengaged with the screw rod 32, the second step surface 213 is separated from the second abutting surface 113, and the second-stage inserted rod 232 is reinserted into any one of the second-, so as to lock the secondary driving wheel 22 and further retract the secondary expansion link 21 to the second initial position under the reverse rotation of the screw rod 32, i.e. to fully retract the secondary expansion link 21, thereby realizing two continuous and sequential retraction processes of the telescopic device 100.

As shown in fig. 7 to 18, in this embodiment, the telescopic device 100 further includes a locking mechanism 50, the locking mechanism 50 includes an insertion block 51, a compression spring 52 and a sliding block 53, one end of the insertion block 51 away from the secondary telescopic rod 21 is connected to the primary telescopic rod 11 through the compression spring 52, a locking insertion hole 2121 matched with the insertion block 51 is formed in an outer wall of the secondary telescopic rod 21, a first inclined surface 511 is formed on one side of the insertion block 51 facing the sliding block 53, and the sliding block 53 is in sliding fit with the primary telescopic rod 11. Specifically, a friction ring 1121 is disposed at a free end of the primary rod body 112 of the primary telescopic rod 11, the friction ring 1121 is sleeved outside the secondary rod body 212, the sliding block 53 is slidably mounted on the friction ring 1121, and the friction ring 1121 is further provided with a sliding hole 1122 for sliding the sliding block 53. One end of the sliding block 53, which is far away from the secondary telescopic rod 21, extends out of the outer wall of the primary telescopic rod 11, and a second inclined surface 531 which is in sliding fit with the first inclined surface 511 is formed on one surface, which faces the inserting block 51, of the sliding block 53; when the secondary telescopic rod 21 extends to the second limit position, the compression spring 52 drives the plug block 51 to be inserted into the locking jack 2121, so that the secondary telescopic rod 21 is locked with the primary telescopic rod 11; when the first telescopic rod 11 retracts to the first initial position, the sleeve 31 pushes the sliding block 53 to slide in the direction in which the first telescopic rod 21 extends, so that the insertion block 51 is disengaged from the locking insertion hole 2121 through the sliding fit of the second inclined surface 531 and the first inclined surface 511, so as to unlock the second telescopic rod 21 and the first telescopic rod 11.

Specifically, as shown in fig. 8, 9, 16 to 18, a locking insertion hole 2121 is formed at a position of the secondary lever body 212 of the secondary telescopic lever 21 close to the secondary mounting seat 211, the insertion block 51 is arranged at a position on the primary lever body 112 close to the free end, a first inclined surface 511 is formed at the rear side of the insertion block 51, the first inclined surface 511 is inclined downward from the rear to the front, a second inclined surface 531 is formed at the front side of the slide block 53, and the second inclined surface 531 is inclined downward from the rear to the front so as to match with the first inclined surface 511. When secondary telescopic rod 21 stretches out to the second extreme position, secondary mounting seat 211 slides to the position that is close to the free end of one-level pole body 112, and locking jack 2121 corresponds with the position of inserted block 51, inserted block 51 inserts locking jack 2121 under compression spring 52's elastic force, thereby with the locking of one-level telescopic rod 11 and secondary telescopic rod 21, both guarantee that follow-up one-level telescopic rod 11 drives secondary telescopic rod 21 and one-level telescopic rod 11 synchronous flexible at flexible in-process, can guarantee again that under secondary telescopic rod 21 received the effect of backward external force, can keep the lock state with one-level telescopic rod 11, guarantee telescoping device 100's structural stability. When the first-stage telescopic rod 11 retracts to the first initial position, the free end face of the sleeve 31 abuts against the upper end of the sliding block 53 and pushes the sliding block 53 to move forwards, in the process that the sliding block 53 moves forwards, the second inclined face 531 on the sliding block 53 is in sliding fit with the first inclined face 511 on the inserting block 51, and due to the inclined characteristics of the first inclined face 511 and the second inclined face 531, the inserting block 51 can be lifted in the process that the sliding block 53 moves forwards, so that the inserting block 51 is separated from the locking insertion hole 2121, the second-stage telescopic rod 21 is unlocked with the first-stage telescopic rod 11, and the normal retracting process of the subsequent second-stage telescopic rod 21 is ensured.

In this embodiment, the telescopic driving mechanism 33 includes a telescopic motor 332 and two bevel gears 331 engaged with each other, wherein one bevel gear 331 is fixedly sleeved on the screw rod 32, and the other bevel gear 331 is connected to the driving motor. The driving motor drives the bevel gear 331 connected with the driving motor to rotate, and then drives the bevel gear 331 sleeved on the screw rod 32 to rotate, so as to provide motive power for the screw rod 32, realize the rotation or reverse rotation of the screw rod 32, and further realize the extension and retraction process of the extension and retraction device 100. In order to save space, the telescopic driving mechanism 33 of the present embodiment may be installed in the base 30. This embodiment is through single driving motor as original power to adopt pure mechanical structure's mode to design multistage telescoping device, simple structure and convenient preparation, this multistage telescoping device's concertina ratio can reach more than 2.5, satisfies multiple application scene and operation requirement.

The overall working process of the fixed transportation device 600 of the present embodiment is as follows: when the previous pack 300 is processed, the translating mechanism 610 drives the retractable device 100 to move to the initial position in the plane, and the retractable device 100 controls the height coordinate of the clamp plate 620. The telescopic motor 332 drives the screw rod 32 to rotate through the two bevel gears 331, the first-stage thimble 13 releases the first-stage driving wheel 12, the first-stage driving wheel 12 is in an idle running state, and the first-stage telescopic rod 11 does not extend or contract relative to the sleeve 31 and is kept at a first initial position; the secondary ejector pin 23 locks the secondary driving wheel 22, the secondary driving wheel 22 drives the secondary expansion link 21 to slide forward relative to the primary expansion link 11 from the second initial position to the second limit position along with the rotation of the screw 32, the second abutting surface 113 abuts against the second step surface 213 and pushes the second connecting block 234 so that the secondary movable rod 231 drives the secondary insertion rod 232 to disengage from the secondary insertion hole 221, and the secondary ejector pin 23 releases the secondary driving wheel 22. At this time, the locking mechanism 50 locks the two-stage telescopic rod 21 and the one-stage telescopic rod 11, meanwhile, the second step surface 213 on the two-stage telescopic rod 21 pulls the pull rod 41, the one-stage telescopic rod 11 is pulled by the pull rod 41, the action surface 1111 is separated from the first abutting surface 311, the first connecting block 134 extends out of the action surface 1111 again under the action of the first spring, and the one-stage movable rod 131 drives the one-stage insertion rod 132 to be inserted into any one of the one-stage insertion holes 121, so as to realize that the one-stage thimble 13 locks the one-stage driving wheel 12, the one-stage driving wheel 12 drives the one-stage telescopic rod 11 to slide forward relative to the sleeve 31 and extend to the first limit position along with the rotation of the screw 32, understandably, due to the locking effect of the locking mechanism 50, the two-stage telescopic rod 21 continues to extend relative to the sleeve, after the telescopic device 100 is fully extended, the secondary driving wheel 22 of the secondary telescopic rod 21 is disengaged from the screw 32, while the primary driving wheel 12 of the primary telescopic rod 11 is kept engaged with the screw 32, and the primary ejector pin 13 keeps locking the primary driving wheel 12. When extension apparatus 100 is extended to bring clamp 620 to a predetermined height, package 300 is inserted (which may be manually inserted) between clamp 620 and mounting plate 631. When the packing box falls on the mounting plate 631 and is pushed to a certain position, the screw driving mechanism 640 drives the screw 632 to rotate to drive the mounting plate 631 to approach the clamping plate 620, so that the distance between the clamping plate 620 and the mounting plate 631 is changed by controlling the ascending of the mounting plate 631, and the clamping plate 620 can clamp packing boxes 300 with different sizes. After the packing box 300 is clamped, the coordinates of all directions of the packing box 300 are changed through the translation mechanism 610 and the telescopic device 100, the packing box 300 is sent to all working positions, in the process, the conveying belt assembly 650 on the mounting plate 631 starts to move, meanwhile, the screw rod driving mechanism 640 also drives the mounting plate 631 to further approach the clamping plate 620, at the moment, the packing box 300 starts to be flattened along the ridge line under the matching action of the clamping force of the clamping plate 620 and the transverse force of the conveying belt assembly 650, and then the packing box 300 is sent to other positions to be subjected to the next recycling and compressing treatment.

Then, the screw driving mechanism 640 drives the screw 632 to rotate reversely to drive the mounting plate 631 to move away from the clamp plate 620, and the translating mechanism 610 drives the telescopic device 100 to move again. At this time, the telescopic device 100 can be retracted according to actual conditions, the telescopic motor 332 drives the screw rod 32 to rotate in the opposite direction through the two bevel gears 331, and the primary driving wheel 12 drives the primary telescopic rod 11 to retract from the first extreme position to the first initial position relative to the sleeve 31 along with the opposite rotation of the screw rod 32, and understandably, due to the locking effect of the locking mechanism 50, the secondary telescopic rod 21 retracts relative to the sleeve 31 along with the retraction of the primary telescopic rod 11. When the first-stage telescopic rod 11 retracts to the first initial position, the first abutting surface 311 abuts against the acting surface 1111 and pushes the first connecting block 134 to drive the first-stage inserting rod 132 to disengage from the first-stage inserting hole 121, the first-stage ejector pin 13 releases the first-stage driving wheel 12, the first-stage driving wheel 12 returns to the idle state again, and at this time, the locking mechanism 50 unlocks the second-stage telescopic rod 21 and the first-stage telescopic rod 11. Meanwhile, the first-stage thimble 13 on the first-stage telescopic rod 11 reversely pulls the pull rod 41, the second-stage telescopic rod 21 is pulled to move backwards through the pull rod 41, so that the second-stage driving wheel 22 moves backwards and is re-engaged with the screw rod 32, the second step surface 213 is separated from the second abutting surface 113, due to the elastic force of the second spring, the second connecting block 234 connected with the second-stage movable rod 231 extends forwards out of the second step surface 213, the second-stage inserted rod 232 is inserted into the second-stage jack 221, the second-stage thimble 23 re-locks the second-stage driving wheel 22, and the second-stage driving wheel 22 rotates along with the screw rod 32 reversely, so that the second-stage telescopic rod 21 is driven to retract to the second initial position from the second initial position relative to the first-stage telescopic rod 11, thereby realizing two continuous and orderly retracting processes of the telescopic device 100, and the telescopic device 100.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A stationary transportation device, characterized in that the stationary transportation device comprises:

a translation mechanism;

the conveyor belt assembly is arranged on one side of the mounting plate close to the clamping plate;

wherein, the telescoping device includes:

the base is arranged on the translation mechanism and comprises a sleeve, a screw rod rotatably arranged in the sleeve and a telescopic driving mechanism for driving the screw rod to rotate;

the primary telescopic mechanism comprises a primary telescopic rod, a primary driving wheel and a primary thimble, the primary telescopic rod is slidably sleeved in the sleeve, the primary telescopic rod axially limits the primary driving wheel, the primary driving wheel is sleeved outside the screw and meshed with the screw, the primary thimble is connected with the primary telescopic rod, and the primary thimble is used for locking or releasing the primary driving wheel so as to match the primary driving wheel to drive the primary telescopic rod to extend out of a first initial position to a first limit position relative to the sleeve or retract to the first initial position from the first limit position;

the secondary telescopic mechanism comprises a secondary telescopic rod, a secondary driving wheel and a secondary thimble, the secondary telescopic rod is slidably sleeved in the primary telescopic rod, the secondary telescopic rod axially limits the secondary driving wheel, the secondary driving wheel is sleeved outside the screw rod and meshed with the screw rod, the secondary thimble is connected with the secondary telescopic rod, and the secondary thimble is used for locking or releasing the secondary driving wheel so as to match the secondary driving wheel to drive the secondary telescopic rod to extend out of a second initial position to a second limit position or retract to the second initial position from the second limit position relative to the primary telescopic rod;

the free end of the two-stage telescopic rod is fixedly provided with the clamping plate.

2. The fixed conveyance of claim 1, wherein the translation mechanism comprises a slide bar assembly and a pair of slide rail assemblies, the pair of slide rail assemblies being arranged parallel to each other; the sliding rod assemblies are positioned between the paired sliding rail assemblies, and the end parts of the sliding rod assemblies can slide on the sliding rail assemblies; the upper end of the telescopic device is arranged on the sliding rod component in a sliding mode.

3. The fixed conveyance of claim 2, wherein the sled assembly comprises a rail and a sled pull belt disposed parallel to each other; the sliding rod assembly comprises a pair of sliding seats, and a post rod and a sliding rod pulling belt which are arranged in parallel;

the sliding seats are correspondingly arranged on the rails one by one, at least one sliding seat is fixedly arranged on the sliding rail pulling belt, and the sliding rail pulling belt can drive the sliding seats to slide on the rails;

the end of the post rod and the sliding rod pulling belt are arranged on the sliding seat, the upper end of the telescopic device is arranged on the post rod in a sliding mode and is fixedly connected with the sliding rod pulling belt, and the sliding rod pulling belt can drive the telescopic device to slide on the post rod.

4. The fixed transportation device of claim 1, wherein the lead screw driving mechanism is disposed on the mounting plate and comprises a lead screw motor, a transmission shaft driven by the lead screw motor to rotate, a lead screw driving gear disposed on the transmission shaft, and a lead screw driven gear disposed at a lower end of the lead screw, the lead screw driving gear is in meshing transmission with the lead screw driven gear;

the number of the screw rods is multiple, the screw rods are arranged on the mounting plate through bearings, and the upper ends of the screw rods are connected with screw rod nuts fixed on the clamping plates;

the number of the guide rods is multiple, the lower ends of the guide rods are fixed on the mounting plate, and the upper ends of the guide rods are movably sleeved on the clamping plate.

5. The fixed transportation device as claimed in any one of claims 1 to 4, wherein the secondary driving wheel is provided with a secondary jack, the secondary ejector pin comprises a secondary movable rod, and a secondary jack rod and a secondary driving member respectively connected with the secondary movable rod, and the secondary movable rod is in sliding fit with the secondary telescopic rod; when the secondary telescopic rod is located at the second initial position, the secondary driving piece can drive the secondary movable rod to drive the secondary insertion rod to be inserted into the secondary insertion hole and lock the secondary driving wheel, or when the secondary telescopic rod extends to the second limit position, the secondary insertion rod is separated from the secondary insertion hole and releases the secondary driving wheel; when the secondary telescopic rod is located at the second limit position, the secondary driving wheel is disengaged from the screw rod.

6. The fixed transportation device of claim 5, wherein the secondary telescoping rod comprises a secondary mount and a secondary rod body connected to the secondary mount, the secondary drive wheel is mounted in the secondary mount, and the secondary mount axially limits the secondary drive wheel; the secondary movable rod penetrates through the secondary mounting seat in a sliding mode, the secondary insertion rod is connected to one end, far away from the secondary rod body, of the secondary movable rod, the secondary driving piece is a second spring, the first end of the second spring is connected with the secondary mounting seat, and the second end of the second spring is connected with one end, far away from the secondary insertion rod, of the secondary movable rod through a second connecting block;

a second step surface is formed at the joint of the secondary rod body and the secondary mounting seat, a second connecting surface is formed in the secondary mounting seat, the first end of the second spring is connected with the second connecting surface, and a second abutting surface is arranged on the primary telescopic rod close to the free end; when the secondary expansion link is located at the second initial position, the second connecting block extends out of the second step surface and enables the secondary insertion rod to be inserted into the secondary insertion hole; when the second-stage telescopic rod extends to the second limit position, the second abutting surface abuts against the second step surface and pushes the second connecting block to enable the second-stage movable rod to drive the second-stage inserted rod to be separated from the second-stage jack.

7. The fixed transportation device of claim 5, wherein the primary driving wheel is provided with a primary jack, the primary thimble comprises a primary movable rod, a primary jack rod and a primary driving member, the primary jack rod and the primary driving member are respectively connected with the primary movable rod, and the primary movable rod is in sliding fit with the primary telescopic rod; when the primary telescopic rod is located at the first initial position, the primary inserted link is separated from the primary jack and releases the primary driving wheel, or when the secondary telescopic rod extends to the second limit position, the primary driving piece can drive the primary movable rod to drive the primary inserted link to be inserted into the primary jack and lock the primary driving wheel; when the primary telescopic rod is located at the first limit position, the primary driving wheel is meshed with the screw rod;

the primary telescopic rod comprises a primary mounting seat and a primary rod body connected with the primary mounting seat, the primary driving wheel is mounted in the primary mounting seat, and the primary mounting seat axially limits the primary driving wheel; the secondary telescopic rod is sleeved in the primary rod body in a sliding manner; the one-level movable rod slides and wears to locate the one-level mount pad, the one-level inserted bar is connected the one-level movable rod is close to the one end of one-level pole body, the one-level driving piece is first spring, the first end of first spring with the one-level mount pad is connected, the second end of first spring through first connecting block with keep away from on the one-level movable rod the one end of one-level inserted bar is connected.

8. The fixed transportation device of claim 7, wherein the junction of the primary rod body and the primary mounting seat forms a first step surface, a side of the primary mounting seat facing away from the first step surface forms an active surface, and the first connecting block extends out of the active surface; a first connecting surface is formed in the primary mounting seat, a first end of the first spring is connected with the first connecting surface, and a first abutting surface is arranged on one side, facing the primary mounting seat, of the inner surface of the sleeve; when the primary telescopic rod is located at the first initial position, the first abutting surface abuts against the action surface and pushes the first connecting block to drive the primary inserted link to be separated from the primary jack;

the telescopic device further comprises a linkage mechanism, when the second-stage telescopic rod extends to the second limit position, the linkage mechanism pulls the first-stage telescopic rod at the first initial position to extend, and the first-stage telescopic rod drives the first-stage driving wheel to move so that the first-stage inserted link is inserted into the first-stage insertion hole;

wherein, the link gear includes:

the pull rod is connected with the inner wall of the primary rod body in a sliding mode, and a first pull hook and a second pull hook are formed at two ends of the pull rod respectively;

the first drag hook is arranged at the first end of the hinged rod, the primary movable rod is abutted against the second end of the hinged rod, and the position, between the first end and the second end, on the hinged rod is hinged with the primary rod body through a hinged shaft;

when the second-stage telescopic rod extends to the second limit position, the second drag hook is hooked on the second-stage telescopic rod and drives the pull rod to move along the extending direction of the second-stage telescopic rod through the second-stage telescopic rod, so that the second end of the hinged rod rotates around the hinged shaft and simultaneously pulls the first-stage telescopic rod at the first initial position to extend, and the first-stage inserted rod is inserted into the first-stage jack;

when the first-stage telescopic rod retracts to the first initial position, the first abutting surface pushes the first connecting block, so that the first-stage movable rod pushes the second end of the hinged rod to rotate reversely around the hinged shaft, the second-stage telescopic rod at the second limit position is pulled through the pull rod to move in the retracting direction of the first-stage telescopic rod, and the second-stage driving wheel is meshed with the screw rod again.

9. The fixed transportation device of claim 5, wherein the telescoping device further comprises a locking mechanism, the locking mechanism comprises an insertion block, a compression spring and a sliding block, one end of the insertion block, which is far away from the secondary telescopic rod, is connected with the primary telescopic rod through the compression spring, a locking jack matched with the insertion block is formed in the outer wall of the secondary telescopic rod, a first inclined surface is formed on one side, facing the sliding block, of the insertion block, the sliding block is matched with the primary telescopic rod in a sliding mode, one end, which is far away from the secondary telescopic rod, of the sliding block extends out of the outer wall of the primary telescopic rod, and a second inclined surface matched with the first inclined surface is formed on one side, facing the insertion block, of the sliding block;

when the secondary telescopic rod extends to the second limit position, the compression spring drives the insertion block to be inserted into the locking insertion hole, so that the secondary telescopic rod and the primary telescopic rod are locked;

when the first-stage telescopic rod retracts to the first initial position, the sleeve pushes the sliding block to slide towards the extending direction of the first-stage telescopic rod, so that the inserting block is separated from the locking jack through the sliding fit of the second inclined surface and the first inclined surface, and the second-stage telescopic rod and the first-stage telescopic rod are unlocked.