CN219946270U - Rotary arm rotary locking device - Google Patents
Rotary arm rotary locking device Download PDFInfo
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- CN219946270U CN219946270U CN202321341230.5U CN202321341230U CN219946270U CN 219946270 U CN219946270 U CN 219946270U CN 202321341230 U CN202321341230 U CN 202321341230U CN 219946270 U CN219946270 U CN 219946270U
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- 230000033001 locomotion Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
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Abstract
The utility model discloses a rotary arm rotary locking device, which comprises a base, a rotating shaft, a locking piece and a driving assembly, wherein the rotating shaft is rotationally connected with the base; the rotating shaft is provided with a rotating limiting structure, the base is provided with a limiting chute extending towards the rotating limiting structure, the locking piece is slidably connected in the limiting chute and is in driving connection with the driving assembly, and the driving assembly can drive the locking piece to slide towards or away from the rotating limiting structure; one end of the locking piece facing the rotation limiting structure is provided with a rotation limiting matching structure, and the rotation limiting matching structure can be matched with the rotation limiting structure in the rotation direction of the rotating shaft so that torque can be mutually transmitted between the rotating shaft and the locking piece; and a limiting part and a limiting matching part are respectively arranged in the limiting sliding groove and on the locking piece in the rotating direction of the rotating shaft, and the limiting matching part is matched with the limiting part so that torque can be mutually transmitted between the locking piece and the base.
Description
Technical Field
The utility model belongs to the technical field of mechanical arms, and particularly relates to a rotary arm rotation locking device.
Background
In industrial equipment such as a rotating arm of a medical instrument, an automatic mechanical arm and the like, the aspects of free rotation, locking, torque resistance, stability and the like of joints are always cores of product performance. The self-locking ability of the joint is particularly important when the rotation of the swivel arm to a certain position requires fixation.
However, in the prior art, the self-locking of the rotating arm is realized mostly by means of the self-locking function of the rotating arm driving motor, but the driving motor has lower self-locking capacity, small load capacity and easy failure.
The utility model patent with application number 202210729729.7 discloses a locking mechanism of a mechanical arm, which is arranged on the side part of a first movable joint of the mechanical arm, wherein a transmission groove is arranged on the side part of the first movable joint, one end of the first movable joint is connected with a second movable joint, the movable end of a built-in motor at the end part of the second movable joint extends in the transmission groove, a first gear is arranged at the movable end, a rotating shaft is arranged in the transmission groove, a second gear is arranged on the rotating shaft, and the first gear is meshed with the second gear; the motor movable end on be equipped with first disc, be equipped with the second disc on the pivot and be equipped with the clearance between first disc and the second disc.
Arc-shaped parts are symmetrically arranged on two sides of a clamping block in the prior art, the arc-shaped parts on two sides are respectively matched with the circumferential surfaces of the first disc and the second disc, the rotating space of the two discs is reduced through the clamping block, the clamping block blocks the rotating stroke of the discs coaxially arranged with the gears, so that the locking of the gears in rotation is realized, and the joint of the mechanical arm is locked, that is, the locking of the joint of the mechanical arm is realized through friction force in the prior art. But the load locking capacity by friction is not high and wear failure is very likely to occur after long-term use.
Disclosure of Invention
Aiming at the problems in the background art, the utility model aims to provide a rotary arm rotary locking device which comprises a base, a rotating shaft, a locking piece and a driving component, wherein the rotating shaft is rotationally connected with the base;
the rotating shaft is provided with a rotating limiting structure, the base is provided with a limiting chute extending towards the rotating limiting structure, the locking piece is connected in the limiting chute in a sliding mode, the locking piece is connected with the driving assembly in a driving mode, and the driving assembly can drive the locking piece to slide towards or away from the rotating limiting structure;
one end of the locking piece, which faces the rotation limiting structure, is provided with a rotation limiting matching structure, and the rotation limiting matching structure can be matched with the rotation limiting structure in the rotation direction of the rotating shaft so that torque can be mutually transmitted between the rotating shaft and the locking piece;
and a limiting part and a limiting matching part are respectively arranged in the limiting sliding groove and on the locking piece in the rotating direction of the rotating shaft, and the limiting matching part is matched with the limiting part so that torque can be mutually transmitted between the locking piece and the base.
Preferably, the rotary arm comprises two rotary arms, wherein the two rotary arms are a first rotary arm and a second rotary arm respectively, and the first rotary arm and the second rotary arm are connected with the rotating shaft and the base respectively.
Preferably, the rotation limiting structure is a limiting chuck, the limiting chuck is fixedly arranged at one end of the rotating shaft, which faces the locking piece, a plurality of first straight teeth uniformly distributed along the circumference of the axis of the rotating shaft are arranged on one end face of the limiting chuck, which faces the locking piece, the first straight teeth are arranged along the radial direction of the rotating shaft, and the first straight teeth are arranged along the axial direction of the rotating shaft at two side walls of the rotating direction of the rotating shaft;
the rotation limiting matching structure is a plurality of second straight teeth, the second straight teeth are arranged along the axis of the rotating shaft at equal interval circumference intervals, the second straight teeth are arranged along the radial direction of the rotating shaft, and the second straight teeth are arranged along the axial direction of the rotating shaft at two side walls of the rotating direction of the rotating shaft;
the minimum clearance between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the minimum clearance between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
or, the maximum gap between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the minimum gap between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
or, the minimum gap between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the maximum gap between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
the first straight teeth can enter between the adjacent second straight teeth, the second straight teeth can enter between the adjacent first straight teeth, and torque can be mutually transmitted between the rotating shaft and the locking piece through blocking limit fit between the side walls of the first straight teeth and the second straight teeth in the rotating direction of the rotating shaft.
Preferably, the base comprises a mounting seat and a first mounting sleeve, one end of the rotating shaft penetrates through and rotates to be connected with the first mounting sleeve, the other end of the rotating shaft extends out of the first mounting sleeve, the mounting seat is arranged in the first mounting sleeve and fixedly connected with the first mounting sleeve, and the mounting seat faces to one end of the rotating shaft and is provided with the limiting sliding groove.
Preferably, the limiting part is two inner side walls of the limiting sliding groove in the rotating direction of the rotating shaft, and the limiting matching part is two side walls of the locking piece in the limiting sliding groove and in the rotating direction of the rotating shaft.
Preferably, two sides of the mounting seat facing one end of the rotating shaft are respectively provided with a limiting chute, and two ends of the locking piece are respectively connected with the two limiting chutes in a sliding mode.
Preferably, the mounting seat is provided with a containing groove between the two limiting sliding grooves, the driving assembly is arranged in the containing groove, and the driving assembly is connected between the two ends of the locking piece.
Preferably, the opposite ends of the first straight tooth and the second straight tooth are respectively provided with a round angle.
Preferably, the bearing assembly comprises a shaft sleeve, two bearings and a bearing annular sealing cover, wherein the shaft sleeve is arranged in the first installation sleeve, the two bearings are respectively arranged at two ends in the shaft sleeve, the bearing annular sealing cover is arranged at one end of the shaft sleeve, which faces the locking piece, and the rotating shaft is rotationally connected in the two bearings.
Preferably, the driving component is a telescopic cylinder.
By adopting the technical scheme, the utility model has the following advantages and positive effects compared with the prior art:
1. according to the utility model, the rotation limit matching structure is matched with the rotation limit structure in the rotation direction of the rotating shaft, and the limit matching part is matched with the limit part in the rotation direction of the rotating shaft, so that the torque of the rotating shaft can be completely transmitted to the base to be counteracted, the locking of the rotating arm is realized, the anti-load capacity is strong, the whole structure is simple, the structure is compact, the occupied space is small, the product appearance is beautified, the cost is low, the maintenance is easy, and the popularization and the application are facilitated. Meanwhile, the torque of the rotating shaft is transmitted to the locking piece, a component force towards the driving assembly is not generated, so that the driving assembly is not subjected to torque, and the stability is high.
2. The rotary limiting structure is a limiting chuck, the limiting chuck is provided with the first straight teeth, the rotary limiting matching structure is a plurality of second straight teeth, and the purpose that only torque in the rotation direction of the rotating shaft is transmitted between the rotating shaft and the locking piece without generating component force towards the driving assembly is realized through the matching of the first straight teeth and the second straight teeth. And the rigidity is spacing between first straight tooth and the second straight tooth, and anti load ability is strong, simultaneously because spacing chuck round all is equipped with first straight tooth for can lock the pivot in 360 degrees optional position, need not to align the locking repeatedly.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is a cross-sectional view of the present utility model;
FIG. 4 is a schematic view of a locking element and a spacing chuck of the present utility model;
FIG. 5 is a schematic view of the locking element, limit chuck, mounting base and drive assembly of the present utility model;
FIG. 6 is a schematic diagram of the locking state of the present utility model;
fig. 7 is a schematic diagram of the unlocking state of the present utility model.
Reference numerals illustrate:
1. a first rotating arm; 2. a rotating shaft; 3. a bearing annular seal cover; 4. a limit chuck; 5. a locking member; 6. a mounting base; 7. a drive assembly; 8. a first mounting sleeve; 9. a shaft sleeve; 10. a bearing; 11. a second rotating arm; 12. a second mounting sleeve; 13. a first straight tooth; 14. a second straight tooth; 15. limiting sliding groove.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples. The advantages and features of the present utility model will become more apparent from the following description. It is noted that the drawings are in a very simplified form and utilize non-precise ratios, and are intended to facilitate a convenient, clear, description of the embodiments of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1 to 7, the core of the present utility model is to provide a rotary arm rotation locking device, which comprises a base, a rotating shaft 2, a locking piece 5 and a driving component 7, wherein the rotating shaft 2 is rotatably connected with the base, the locking piece 5 and the driving component 7 are arranged on the base, and the rotating shaft 2 and/or the base are/is used for being connected with the rotary arm.
The rotating shaft 2 and the base are both used for being connected with the rotating arm in the embodiment, and specifically, the rotating arm comprises two rotating arms, namely a first rotating arm 1 and a second rotating arm 11, and the first rotating arm 1 and the second rotating arm 11 are connected with the rotating shaft 2 and the base respectively. Of course, in other embodiments, one of the rotating shaft 2 or the base may be connected to the rotating arm, and when the rotating shaft 2 is connected to the connecting arm, the base is fixed at a fixed position; when the base is connected with the connecting arm, the rotating shaft 2 is rotatably connected to the fixed position. That is, the structure of the utility model can be used as an equipment platform or a mounting platform, and can be used for independently controlling the locking and unlocking of one rotating arm and also can be applied to the use scene of the multi-joint rotating arm.
The base includes mount pad 6 and first installation sleeve 8, and second swinging boom 11 is connected on the outer wall of first installation sleeve 8. One end of the rotating shaft 2 is penetrated and rotatably connected in the first mounting sleeve 8, the other end of the rotating shaft extends out of the first mounting sleeve 8, the rotating shaft comprises a second mounting sleeve 12, the second mounting sleeve 12 is sleeved on the rotating shaft 2 extending out of the first mounting sleeve 8 and fixedly connected with the rotating shaft 2 through a radial bolt, and the first rotating arm 1 is connected to the outer wall of the second mounting sleeve 12.
The mount pad 6 is located in the first installation sleeve 8 and is linked firmly with it through radial bolt, still includes axle sleeve 9, two bearings 10 and bearing ring closing cap 3, and in first installation sleeve 8 was located to axle sleeve 9, both ends in axle sleeve 9 were located respectively to two bearings 10, and the one end of axle sleeve 9 orientation locking piece 5 is located to bearing ring closing cap 3 for spacing bearing 10, and pivot 2 rotates to be connected in two bearings 10.
The mounting seat 6 is equipped with spacing spout 15 towards the one end of pivot 2, and locking piece 5 sliding connection is in spacing spout 15, and locking piece 5 and drive assembly 7 drive connection, and drive assembly 7 can drive locking piece 5 to slide towards or keep away from pivot 2.
Specifically, two sides of the mounting seat 6 facing one end of the rotating shaft 2 are respectively provided with a limiting chute 15, two ends of the locking piece 5 are respectively connected with the two limiting chutes 15 in a sliding manner, the driving component 7 is a telescopic cylinder and can be a cylinder, a hydraulic cylinder, an electric cylinder and the like, and of course, the driving component 7 can also be a servo motor, a stepping motor, a screw motor, an electromagnetic push rod and the like, so that the device is not limited. The mounting seat 6 is provided with a containing groove between the two limiting sliding grooves 15, the telescopic cylinder is arranged in the containing groove, and the telescopic rod of the telescopic cylinder is connected between the two ends of the locking piece 5.
And a limiting part and a limiting matching part are respectively arranged in the limiting chute 15 and on the locking piece 5 in the rotating direction of the rotating shaft 2, and the limiting matching part is matched with the limiting part so that torque can be mutually transmitted between the locking piece 5 and the mounting seat 6. Specifically, the limiting portion is two inner sidewalls of the limiting chute 15 in the rotation direction of the rotating shaft 2, and the limiting matching portion is two sidewalls of the locking piece 5 in the limiting chute 15 and in the rotation direction of the rotating shaft 2.
The rotating shaft 2 is provided with a rotation limiting structure at one end in the first mounting sleeve 8, one end of the locking piece 5 facing the rotation limiting structure is provided with a rotation limiting matching structure, and when the driving assembly 7 drives the locking piece 5 to slide towards the rotation limiting structure so that the rotation limiting matching structure and the rotation limiting structure are matched in the rotating direction of the rotating shaft 2, torque can be mutually transmitted between the rotating shaft 2 and the locking piece 5.
Specifically, the rotation limiting structure is a limiting chuck 4, the limiting chuck 4 is fixedly arranged at one end of the rotating shaft 2 facing the locking piece 5, a plurality of first straight teeth 13 uniformly distributed along the circumference of the axis of the rotating shaft 2 are arranged on one end face of the limiting chuck 4 facing the locking piece 5, the first straight teeth 13 are arranged along the radial direction of the rotating shaft 2, and the first straight teeth 13 are arranged along the axial direction of the rotating shaft 2 at two side walls of the rotating direction of the rotating shaft 2.
The rotation limiting matching structure is a plurality of second straight teeth 14, a group of second straight teeth 14 are respectively arranged on two sides of one end of the locking piece 5 facing the rotating shaft 2, the plurality of second straight teeth 14 are arranged along the axis of the rotating shaft 2 at the same circumferential intervals, the second straight teeth 14 are arranged along the radial direction of the rotating shaft 2, and the second straight teeth 14 are arranged along the axial direction of the rotating shaft 2 on two side walls of the rotating direction of the rotating shaft 2.
The minimum clearance between the adjacent first straight teeth 13 is larger than or equal to the thickness of the second straight teeth 14 along the rotation direction of the rotating shaft 2, and the minimum clearance between the adjacent second straight teeth 14 is larger than or equal to the thickness of the first straight teeth 13 along the rotation direction of the rotating shaft 2;
alternatively, the maximum gap between adjacent first straight teeth 13 is greater than or equal to the thickness of the second straight teeth 14 in the rotation direction of the rotation shaft 2, and the minimum gap between adjacent second straight teeth 14 is greater than or equal to the thickness of the first straight teeth 13 in the rotation direction of the rotation shaft 2;
alternatively, the minimum gap between the adjacent first straight teeth 13 is greater than or equal to the thickness of the second straight teeth 14 in the rotation direction of the rotation shaft 2, and the maximum gap between the adjacent second straight teeth 14 is greater than or equal to the thickness of the first straight teeth 13 in the rotation direction of the rotation shaft 2;
so that the first straight teeth 13 can enter between the adjacent second straight teeth 14, and the second straight teeth 14 can enter between the adjacent first straight teeth 13, and torque can be transmitted between the rotating shaft 2 and the locking piece 5 through the blocking limit fit between the side walls of the rotating shaft 2 in the rotating direction of the first straight teeth 13 and the second straight teeth 14.
Further, the opposite ends of the first straight tooth 13 and the second straight tooth 14 are provided with round corners, so that guiding function can be achieved, and the first straight tooth 13 and the second straight tooth 14 can be conveniently locked in a penetrating and matching mode.
The device does not fix the installation direction and the use scene, the characteristics of parts meet the application of various directions and multiple scenes, the application is flexible, the multi-direction can be adjusted at will, for example, the locking and unlocking can be realized by driving the locking piece 5 in the embodiment, the locking and unlocking can be realized by driving the limiting chuck 4 to serve as a locking movement part in other embodiments, and the device is not limited according to the actual situation.
The working process of the utility model is further described below:
when the locking mechanism works, the first rotating arm 1 rotates to drive the rotating shaft 2 and the limiting chuck 4 to rotate, when the whole equipment stops working or has locking and fixing requirements in the working process, the driving assembly 7 drives the locking piece 5 to slide towards the rotating shaft 2, the second straight teeth 14 of the locking piece 5 are mutually inserted and matched with the first straight teeth 13 on the limiting chuck 4, the first straight teeth 13 and the second straight teeth 14 are enabled to rigidly limit in the rotating direction of the rotating shaft 2 to finish locking action, and the driving assembly 7 is located at the maximum travel position during locking, and particularly, reference is made to fig. 6.
At this time, the first straight teeth 13 and the second straight teeth 14 are arranged along the axial direction of the rotating shaft 2 at the two side walls of the rotating direction of the rotating shaft 2, so that the torque of the rotating shaft 2 can be completely transmitted to the locking piece 5, and compared with the traditional tooth-shaped structure, the vertical component force of the locking piece 5 cannot be generated, so that the driving assembly 7 cannot be stressed, the service life of the driving assembly 7 and the equipment reliability are greatly prolonged, the selection threshold of the driving assembly 7 is reduced, and the equipment cost is reduced to a certain extent. Simultaneously, two side walls of the locking piece 5 in the limiting chute 15 and in the rotating direction of the rotating shaft 2 are matched with two inner side walls of the limiting chute 15 in the rotating direction of the rotating shaft 2, torque of the locking piece is transmitted to the mounting seat 6, the mounting seat 6 blocks offset torque, and locking of the limiting chuck 4 and the rotating shaft 2 is achieved, so that locking of the first rotating arm 1 is achieved.
When unlocking is required, the driving assembly 7 drives the locking piece to slide to an initial stroke away from the rotating shaft 2, the first straight teeth 13 are separated from the second straight teeth 14, namely unlocking is completed, and the control principle is simple and efficient.
According to the utility model, the rotation limit matching structure is matched with the rotation limit structure in the rotation direction of the rotating shaft 2, and the limit matching part is matched with the limit part in the rotation direction of the rotating shaft 2, so that the torque of the rotating shaft 2 can be completely transmitted to the base to be counteracted, the locking of the rotating arm is realized, the anti-load capacity is high, the whole structure is simple, the structure is compact, the occupied space is small, the product appearance is beautified, the cost is low, the maintenance is easy, and the popularization and the application are facilitated. Meanwhile, when the torque of the rotating shaft 2 is transmitted to the locking piece 5, component force towards the driving assembly 7 is not generated, so that the driving assembly 7 is not subjected to the torque, and the stability is high. Specifically, the rotation limiting structure is a limiting chuck 4, a first straight tooth 13 is arranged on the limiting chuck 4, the rotation limiting matching structure is a plurality of second straight teeth 14, and the purpose that only torque in the rotation direction of the rotating shaft 2 is transmitted between the rotating shaft 2 and the locking piece 5 without generating component force towards the driving assembly 7 is achieved through the matching of the first straight teeth 13 and the second straight teeth 14. And the rigidity between first straight tooth 13 and the second straight tooth 14 is spacing, and the anti-loading capacity is strong, simultaneously because spacing chuck 4 round all is equipped with first straight tooth 13 for can lock pivot 2 in 360 degrees optional positions, need not to align the locking repeatedly.
Compared with the existing mechanical arm joint locking solutions in the market, most of the mechanical arm joint locking solutions are faced with the problems of high cost, complicated control mechanism and poor load resistance, and the application range is definitely limited in the popularization of products. The utility model has simple control principle, only needs a single driving element, and can meet the reciprocating motion in a fixed stroke, namely, the functional requirements, such as a cylinder, an oil cylinder and the like. Meanwhile, the component parts of the mechanism are simple rigid machining parts, so that the cost of the parts is greatly reduced, and the mechanism is more stable and easy to maintain than the same type of electronic control module in reliability, and is compared with an electromagnetic locking module with similar functions. Based on the characteristics of the structure, the load of the rotating arm after locking does not directly act on the driving assembly 7, but acts on other fixed parts, the driving assembly 7 is not stressed, the stable working state of the driving module is greatly ensured, the driving module is not easy to fail, meanwhile, the special structural characteristics ensure firm locking effect, and the locking mechanism has great advantages compared with similar functional products in the anti-load capacity, and has good application prospects in the directions of medical instrument mechanical arms, automatic robots and the like.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments. Even if various changes are made to the present utility model, it is within the scope of the appended claims and their equivalents to fall within the scope of the utility model.
Claims (10)
1. The rotary arm rotary locking device is characterized by comprising a base, a rotating shaft, a locking piece and a driving assembly, wherein the rotating shaft is rotationally connected with the base, the locking piece and the driving assembly are arranged on the base, and the rotating shaft and/or the base are/is used for being connected with the rotary arm;
the rotating shaft is provided with a rotating limiting structure, the base is provided with a limiting chute extending towards the rotating limiting structure, the locking piece is connected in the limiting chute in a sliding mode, the locking piece is connected with the driving assembly in a driving mode, and the driving assembly can drive the locking piece to slide towards or away from the rotating limiting structure;
one end of the locking piece, which faces the rotation limiting structure, is provided with a rotation limiting matching structure, and the rotation limiting matching structure can be matched with the rotation limiting structure in the rotation direction of the rotating shaft so that torque can be mutually transmitted between the rotating shaft and the locking piece;
and a limiting part and a limiting matching part are respectively arranged in the limiting sliding groove and on the locking piece in the rotating direction of the rotating shaft, and the limiting matching part is matched with the limiting part so that torque can be mutually transmitted between the locking piece and the base.
2. The rotary arm rotation locking device according to claim 1, comprising two said rotary arms, a first rotary arm and a second rotary arm respectively, said first rotary arm and said second rotary arm being connected to said shaft and said base respectively.
3. The rotary arm rotary locking device according to claim 1, wherein the rotary limiting structure is a limiting chuck, the limiting chuck is fixedly arranged at one end of the rotary shaft facing the locking piece, a plurality of first straight teeth uniformly distributed along the circumference of the axis of the rotary shaft are arranged on one end surface of the limiting chuck facing the locking piece, the first straight teeth are arranged along the radial direction of the rotary shaft, and the first straight teeth are arranged along the axial direction of the rotary shaft at two side walls of the rotary direction of the rotary shaft;
the rotation limiting matching structure is a plurality of second straight teeth, the second straight teeth are arranged along the axis of the rotating shaft at equal interval circumference intervals, the second straight teeth are arranged along the radial direction of the rotating shaft, and the second straight teeth are arranged along the axial direction of the rotating shaft at two side walls of the rotating direction of the rotating shaft;
the minimum clearance between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the minimum clearance between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
or, the maximum gap between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the minimum gap between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
or, the minimum gap between the adjacent first straight teeth is larger than or equal to the thickness of the second straight teeth along the rotating direction of the rotating shaft, and the maximum gap between the adjacent second straight teeth is larger than or equal to the thickness of the first straight teeth along the rotating direction of the rotating shaft;
the first straight teeth can enter between the adjacent second straight teeth, the second straight teeth can enter between the adjacent first straight teeth, and torque can be mutually transmitted between the rotating shaft and the locking piece through blocking limit fit between the side walls of the first straight teeth and the second straight teeth in the rotating direction of the rotating shaft.
4. The rotary arm rotation locking device according to claim 1, wherein the base comprises a mounting seat and a first mounting sleeve, one end of the rotary shaft is penetrated and rotatably connected in the first mounting sleeve, the other end of the rotary shaft extends out of the first mounting sleeve, the mounting seat is arranged in the first mounting sleeve and fixedly connected with the first mounting sleeve, and one end of the mounting seat facing the rotary shaft is provided with the limiting chute.
5. The rotary arm rotation locking device according to claim 4, wherein the limit portion is two inner side walls of the limit chute in the rotation direction of the shaft, and the limit fitting portion is two side walls of the locking member in the limit chute in the rotation direction of the shaft.
6. The rotary arm rotary locking device according to claim 4, wherein two sides of the mounting seat facing one end of the rotating shaft are respectively provided with one limiting chute, and two ends of the locking piece are respectively connected with two limiting chutes in a sliding manner.
7. The rotary arm rotation locking device according to claim 6, wherein the mounting seat is provided with a receiving groove between the two limiting sliding grooves, the driving assembly is disposed in the receiving groove, and the driving assembly is connected between two ends of the locking member.
8. A rotary arm rotation locking device according to claim 3, wherein the first straight tooth and the second straight tooth are each provided with a rounded corner at their opposite ends.
9. The rotary arm rotation locking device according to claim 4, comprising a shaft sleeve, two bearings and a bearing ring cover, wherein the shaft sleeve is arranged in the first mounting sleeve, the two bearings are respectively arranged at two ends in the shaft sleeve, the bearing ring cover is arranged at one end of the shaft sleeve facing the locking piece, and the rotating shaft is rotatably connected in the two bearings.
10. The rotary arm rotation locking device of claim 1, wherein the drive assembly is a telescoping cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321341230.5U CN219946270U (en) | 2023-05-30 | 2023-05-30 | Rotary arm rotary locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321341230.5U CN219946270U (en) | 2023-05-30 | 2023-05-30 | Rotary arm rotary locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219946270U true CN219946270U (en) | 2023-11-03 |
Family
ID=88556499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321341230.5U Active CN219946270U (en) | 2023-05-30 | 2023-05-30 | Rotary arm rotary locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219946270U (en) |
-
2023
- 2023-05-30 CN CN202321341230.5U patent/CN219946270U/en active Active
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