CN117002640B - Thrust wheel and crawler device of engineering machinery - Google Patents
Thrust wheel and crawler device of engineering machinery Download PDFInfo
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- CN117002640B CN117002640B CN202311282571.4A CN202311282571A CN117002640B CN 117002640 B CN117002640 B CN 117002640B CN 202311282571 A CN202311282571 A CN 202311282571A CN 117002640 B CN117002640 B CN 117002640B
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- 230000009471 action Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 34
- 230000000694 effects Effects 0.000 description 14
- 230000003139 buffering effect Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/14—Arrangement, location, or adaptation of rollers
- B62D55/15—Mounting devices, e.g. bushings, axles, bearings, sealings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention relates to the technical field of engineering machinery, in particular to a thrust wheel and a crawler device of engineering machinery, wherein the thrust wheel comprises: a wheel axle; the wheel body is pivoted on the wheel shaft; the guide piece is arranged on the wheel body, and the outer side end of the guide piece extends to the outside of the wheel body; and a guide flange provided at an outer end of the guide member. The guide flange is composed of at least two groups of diagonal structures, at least two groups of diagonal structures are oppositely and symmetrically arranged in the axial direction of the wheel shaft, and a deviation rectifying guide structure which moves towards the axial center of the wheel shaft is formed for the track plate after the track plate is abutted. The invention is beneficial to solving the problems that the wheel body structure of the existing thrust wheel is not provided with an anti-deviation structure, and the deviation action of the track shoe in the use process can not be restrained, so that the track shoe can easily deviate in the abutting process with the wheel body, and the bearing of the thrust wheel is unbalanced, and the abrasion of the thrust wheel structure is accelerated.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a thrust wheel and a crawler device of engineering machinery.
Background
Crawler devices in construction machinery are common walking component structures, and have important influences on the operation performance and service life of equipment. Crawler units generally comprise a "four-wheel belt", which refers to the drive wheel, guide wheel, thrust wheel, idler, belt referring to the crawler. The supporting wheels are used for supporting the weight of the excavator and rolling on the guide rail (rail chain link) or the crawler plate surface of the crawler belt, and are also used for limiting the crawler belt and preventing the transverse slipping.
The existing track supporting wheel mainly utilizes a wheel body and convex edges on two sides to form a supporting body with a U-shaped longitudinal section, the wheel body utilizes a flat end face of the supporting body to mainly support a track plate structure, the convex edges can limit left and right lateral deflection of the track plate in the running process at the outer side end, the lateral deflection limiting mainly limits the chain links of the track plate between the inner side walls of the two convex edges, in practice, in order to prevent the track plate from being blocked by the supporting wheel, clearance fit is adopted between the chain links of the track plate and the convex edges of the supporting wheel, the clearance fit space can provide a certain margin of lateral movable space, so that the track plate chain links cannot be blocked with the supporting wheel easily when slightly deflected due to uneven ground and the like in the running process of the track plate, however, because of the space of the clearance fit, after the track shoe is transversely deviated, a load action point is generated to deviate to one side of the supporting wheel, so that the side wheel body is easy to wear, when the excavator turns, the supporting wheel forces the crawler belt to slide on the ground, the deviation wear condition is more serious, even derailment phenomenon occurs, after long-term use, the single-side wear of the wheel body is easy to occur, vicious circle is caused, the chain links of the track shoe are more easy to deviate to the wear side, and then the structures such as an end cover, an oil seal, a wheel shaft and the like on the side of the supporting wheel are damaged, and further, the whole supporting wheel is scrapped, and the replacement and maintenance of the supporting wheel in the actual use process are relatively difficult because of the operation environment and the heavy equipment are limited.
Accordingly, there is a need for a new track roller and crawler assembly that overcomes the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The invention mainly aims to provide a thrust wheel of engineering machinery, which is beneficial to solving the problems that the wheel body structure of the existing thrust wheel is not provided with an anti-deviation structure, so that the deviation action of a track shoe in the use process cannot be restrained, the track shoe can easily deviate in the abutting process with the wheel body, the bearing of the thrust wheel is unbalanced, and the abrasion of the thrust wheel structure is accelerated.
Another object of the present invention is to provide a crawler device for an engineering machine, which is innovatively designed on the structure of the existing track shoe, and cooperates with the track roller structure to form a multi-level anti-deviation structure, so as to further improve the problem that the track roller structure is damaged due to easy deviation of the track shoe during use.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a thrust wheel of engineering machine tool which characterized in that, this thrust wheel includes:
a wheel axle;
the wheel body is pivoted on the wheel shaft;
the guide piece is arranged on the wheel body, and the outer side end of the guide piece extends to the outside of the wheel body;
a guide flange provided at an outer end of the guide member;
the wheel body consists of a first wheel body and a second wheel body which are symmetrically arranged along the axial direction of the wheel shaft, and the inner side ends of the first wheel body and the second wheel body in the axial direction of the wheel body are provided with protection pieces;
the protection piece comprises a stop block arranged at the inner side ends of the first wheel body and the second wheel body, a pivot shaft is arranged between the stop block and the first wheel body or the second wheel body, the stop block is positioned at the outer side end of the pivot shaft and extends to the outer side of the wheel body, the stop block is positioned at the inner side end of the pivot shaft and is hinged with a slide block, the slide block extends into the movable cavity, the top of the slide block and the bottom of the guide piece are respectively provided with mutually matched inclined surface structures, and after the guide piece is pressed and moved inwards, the inclined surface structures can be utilized to transversely push out the slide block and drive the outer side end of the stop block to axially overturn along the wheel body, so that a pressed feedback limiting structure for limiting the track plate is formed;
the guide piece comprises a first guide piece and a second guide piece which are arranged on the first wheel body and the second wheel body, and guide flanges on the first guide piece and the second guide piece are of opposite diagonal structures, so that a deviation rectifying guide structure which is used for generating movement to the axial center of the wheel shaft for the advancing track plate after being abutted against the track plate is formed.
On the basis of the technical scheme, the guide piece is movably connected with the wheel body, a self-resetting bearing structure is arranged between the guide piece and the wheel body, the guide piece moves towards the axle center side of the wheel body after being pressed in the radial direction of the wheel body, the abutting object of the track shoe is expanded to the outer side surface of the wheel body by the guide piece, and the self-resetting bearing structure can drive the outer side end of the guide piece to move to the outer side of the wheel body in a free state.
On the basis of the technical scheme, the wheel body is provided with a plurality of movable cavities which are symmetrical around the axial center line of the wheel body, the outer ends of the movable cavities are provided with openings communicated with the outer space of the wheel body, the guide piece is arranged in the movable cavities, springs are arranged between the inner ends of the guide piece and the bottoms of the movable cavities, the springs form the self-resetting bearing structure, the outer ends of the guide piece are provided with protruding blocks penetrating through the openings, and the guide flange is fixedly arranged at the outer ends of the protruding blocks.
On the basis of the technical scheme, the first wheel body and the second wheel body are provided with convex edges at the outer ends of the wheel body in the axial direction.
The crawler device of the engineering machinery comprises a walking frame, a left frame and a right frame are symmetrically arranged on the left side and the right side of the walking frame, a unit module is formed by a driving wheel, a guide wheel, a supporting wheel and the supporting wheel of the engineering machinery, a crawler unit is arranged on the periphery of the unit module in a winding mode, the crawler unit is formed by connecting a plurality of crawler plates in a front-back mode, and a guide structure is arranged between the crawler plates and the supporting wheel.
On the basis of the technical scheme, the track shoe comprises a first chain link, a second chain link, a connecting rod and a plate body; the first chain link and the second chain link are arranged at left and right sides of the bottom of the plate body at intervals, transverse through holes for penetrating the connecting rods are formed in the front end and the rear end of the first chain link and the rear end of the second chain link, wide opening ends and narrow opening ends with different distances are formed in the front end and the rear end of the first chain link and the rear end of the second chain link, and a V-shaped guide structure is formed between the wide opening ends and the narrow opening ends.
On the basis of the technical scheme, the bottom of the plate body is detachably connected with the inner side walls of the first chain link and the second chain link, and a pre-fixing structure is arranged.
Compared with the prior art, the invention at least comprises the following advantages:
1. according to the invention, the guide piece and the guide flange are arranged on the wheel body of the supporting wheel, and the inclined grain structure which is reversely and symmetrically distributed by the guide flange is utilized to form the deviation correcting guide structure which is used for generating movement to the axial center of the wheel shaft for the traveling track plate after the track plate is abutted against the track plate, namely in practical application, when the track plate is moved to the bottom of the supporting wheel, a relative acting force is generated between the track plate and the outer surface of the wheel body of the supporting wheel, and when the track plate is in a transverse deviation position, the inclined grain structure can cooperate with the influence of the relative acting force to correct the deviation of the track plate to the axial center of the wheel shaft, so that the problem that the wheel body structure of the existing supporting wheel only has an outer convex edge as an outer separation structure, but does not have an anti-deviation structure, so that deviation action in the use process of the track plate cannot be restrained and controlled in time, and the track plate can easily generate deviation in the abutting process, so that the bearing unbalance of the track plate is generated, and the abrasion of the structure of the supporting wheel is accelerated.
2. According to the invention, through innovative design on the structure of the existing track shoe, the guide structure is arranged between the track shoe and the supporting wheel, and the guide structure and the supporting wheel structure are cooperated to form a multi-level anti-deflection structure together, so that the problem that the supporting wheel structure is damaged due to easy deflection of the track shoe in the use process is further solved.
Drawings
FIG. 1 is a schematic diagram of a thrust wheel according to an embodiment;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view showing an assembled structure of a first guide member in an embodiment;
FIG. 4 is a schematic view showing an assembled structure of a first guide member in another embodiment;
FIG. 5 is a schematic diagram of the mating relationship of the thrust wheel and track shoe in an embodiment;
FIG. 6 is a schematic structural view of a thrust wheel according to another embodiment;
FIG. 7 is a schematic view of a portion of the stop of FIG. 6;
FIG. 8 is a schematic diagram showing the cooperation between the guard and the second guide in an embodiment;
FIG. 9 is a schematic illustration of the mating relationship of the thrust wheel and track shoe of FIG. 6;
FIG. 10 is a schematic view of a track shoe in an embodiment;
FIG. 11 is a schematic view of the configuration of the wide and narrow mouth ends of a track shoe in one embodiment;
FIG. 12 is a side view of a plate in one embodiment;
fig. 13 is a schematic structural view of a crawler apparatus in an embodiment.
The drawing is marked: 1. a thrust wheel; 11. a first wheel body; 111. a movable cavity; 112. an opening; 113. a limit column; 12. a second wheel body; 13. a convex edge; 14. an end cap; 15. a first guide; 151. a bump; 152. a threaded flange; 153. a first spring; 154. a spring groove; 155. a limit groove; 16. a second guide; 161. a first inclined surface; 162. a second spring; 17. a support; 18. a wheel axle; 2. track shoes; 21. a first link; 22. a second link; 23. a connecting rod; 24. a plate body; 241. a groove; 242. a mounting hole; 243. a clamping block; 244. a first rib; 3. a guard; 31. a stop block; 32. a pivot shaft; 33. a pivot seat; 34. a second rib; 35. a slide block; 351. a second inclined surface; 4. a walking frame; 41. a left frame; 42. a right frame; 5. a driving wheel; 6. a guide wheel; a. a wide mouth end; b. a narrow mouth end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and the detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Example 1:
referring to fig. 1 and 2, the present embodiment discloses a thrust wheel of a construction machine, where the thrust wheel 1 includes a first wheel body 11, a second wheel body 12, a flange 13, an end cover 14, a wheel shaft 18 and a support 17.
The wheel axle 18 is horizontally arranged left and right, and two ends of the wheel axle are assembled with the support 17 and are fixedly connected with the walking frame 4 through the support 17.
The first wheel body 11 and the second wheel body 12 are pivoted on the wheel shaft 18, and the first wheel body 11 and the second wheel body 12 are symmetrically arranged along the axial interval of the wheel shaft 18, the outer side ends of the first wheel body 11 and the second wheel body 12 are respectively provided with a convex edge 13, the outer side wall of the convex edge 13 is provided with an end cover 14, the inner sides of the first wheel body 11 and the second wheel body 12 which are positioned on the end covers 14 are provided with a pivot structure and an oil seal structure, so that the first wheel body 11 and the second wheel body 12 can rotate around the axial center line of the wheel shaft 18 under a load state, the structure is of the prior art, and the specific structure and the working principle according to the structure in the operation process are not repeated here.
Further, the first wheel body 11 and the second wheel body 12 are welded together at the inner end of the axle 18 in the axial direction to form a bearing structure with a U-shaped longitudinal section profile, and the outer circumferential surfaces of the first wheel body 11 and the second wheel body 12 on the inner sides of the convex edges 13 are used as main bearing supporting surfaces for abutting the track plate 2 in running, and the track plate 2 is positioned below the supporting wheel 1 during abutting.
The bearing support surface is provided with a guide member, which is fixedly arranged on the outer circumferential surfaces of the first wheel body 11 and the second wheel body 12 in this embodiment, and is respectively a first guide member 15 and a second guide member 16, wherein the first guide member 15 and the second guide member 16 are specifically raised strips, and the raised strips are parallel to the axial direction of the wheel axle 18 and are integrally formed with the outer surface of the wheel body.
In this embodiment, 24 first guiding elements 15 are distributed symmetrically around the axial center line of the first wheel body 11, 24 second guiding elements 16 are distributed symmetrically around the axial center line of the second wheel body 12, and during rotation of the thrust wheel 1, the first guiding elements 15 and the second guiding elements 16 can be abutted with the track plate 2 as equidistant flange structures.
Further, the outer end surfaces of the first guide 15 and the second guide 16 are provided with guide flanges for guiding the track shoe 2 in contact therewith. Specifically, the guide flanges on the first guide 15 and the second guide 16 are in opposite diagonal structures, so as to form a deviation correcting guide structure that moves toward the axial center of the wheel axle 18 for the traveling track plate 2 after abutting the track plate 2. Taking fig. 2 as an example, in the figure, the guide flange on the first guide member 15 is in a diagonal structure from top left to bottom right, the guide flange on the second guide member 16 is in a diagonal structure from top right to bottom left, and based on the posture of the thrust wheel 1 in fig. 2, in combination with fig. 5, during actual operation, the steering of the thrust wheel 1 can make the guide flange at the upper end rotate towards the lower end in the figure, so as to form a double-sided center steering structure by means of the diagonal structure, so that the track plate 2 abutted against the thrust wheel 1 can be simultaneously subjected to double-sided guidance in the running process, a deviation rectifying force for moving towards the axial center of the wheel shaft 18 is generated, in actual situations, if the track plate 2 has an offset center in the abutting process, an effect for resetting towards the center is generated in the moving process, and an overlapping deviation rectifying effect is often generated after a plurality of continuous track plates 2 move, the rotation alternation between adjacent track plates 2 is not affected excessively, that the direction deviation rectifying effect can be ensured, the track plate 2 can be controlled finely on the basis that a large stroke is unchanged, and the deviation rectifying effect of the track plate 2 is restrained, and the track plate 2 is prevented from being greatly offset.
In other embodiments, the outer end surface of the guiding element adopts an inclined surface structure with an inner bottom higher than the inner bottom in the axial direction of the wheel body, so that when the track shoe 2 is abutted to the axially outer side area of the guiding element, the influence acting force of the guiding element and the diagonal lines is more obvious, and the anti-deflection effect can be further improved.
Example 2:
on the basis of embodiment 1, the guide piece is movably connected with the wheel body, namely, the guide piece can move relative to the wheel body. And be equipped with from the reset bearing structure between the guide with the wheel body in the radial of wheel body, the guide is pressed the back and can be moved to wheel body axle center side, and makes the butt object of track shoe 2 by the guide expands to the lateral surface of wheel body, the free state is from the reset bearing structure can drive the outside end of guide moves to the wheel body outside.
Specifically, in connection with fig. 3, the structure is described by taking the first wheel body 11 as an example in fig. 3, 24 movable cavities 111 which are symmetrical around the center line of the axial direction of the wheel body are arranged on the first wheel body 11, the movable cavities 111 are close to one side of the outer circumferential surface of the first wheel body 11, the movable cavities 111 are specifically sinking grooves which are radially arranged along the first wheel body 11, the outer ends of the movable cavities 111 are provided with openings 112 which are communicated with the outer space of the wheel body, the first guide piece 15 is arranged in the movable cavities 111, a first spring 153 is arranged between the inner ends of the guide piece and the bottom of the movable cavity 111, the first spring 153 forms the self-resetting bearing structure, the outer ends of the guide piece are provided with protrusions 151 penetrating through the openings 112, the outer ends of the protrusions 151 are provided with threaded flanges 152, and the specific structures and functions of the guide flanges of the first guide piece 15 are described in the embodiment 1. The bottom of the movable cavity 111 is provided with a limit column 113 radially arranged along the first wheel body 11, the limit columns 113 are uniformly distributed in the movable cavity 111 at intervals along the axial direction of the first wheel body 11, a plurality of first springs 153 are sleeved on the limit columns 113 one by one, the expansion direction of each first spring 153 is parallel to the radial direction of the first wheel body 11, the top of each first spring 153 is abutted against the bottom end of the first guide piece 15, the bottom of each first spring 153 is abutted against the bottom end face of the movable cavity 111, the self elastic force characteristic is utilized, an upward supporting acting force (namely towards the radial outer side of the first wheel body 11) can be provided for the first guide piece 15, the limit columns 113 can be abutted against the bottom of the first guide piece 15 to serve as a rigid support body when the first springs 153 are in a compression limit state, at this time, the outer side ends of the protruding blocks 151 can be located on the outer circumferential face of the first wheel body 11 or flush with the outer circumferential face of the first wheel body 11, the outer circumferential face can be always kept in an abutting relation with the outer track plate 2, and a corresponding anti-deflection effect is generated.
In addition, the structure of the second wheel body 12 is identical to that of the first wheel body 11, but the two wheels are symmetrically arranged.
The structure enables the front sections of the first guide piece 15 and the second guide piece 16 in the abutting process with the track plate 2 to have a certain elastic buffering effect, so that the rigid reaction force of the track plate 2 to the supporting wheel 1 and the whole walking frame 4 can be reduced, namely, jolt of a track device in the moving process can be reduced, the rotation smoothness of the track plate 2 and riding comfort of a driver are improved, and the elastic buffering is beneficial to timely and effectively correcting the track plate 2 which is transversely deviated by cooperating with the guide flange, and the elastic buffering is beneficial to properly tensioning and deforming the track plate 2 on the larger side after the track plate 2 is transversely deviated, so that the correction effect is improved; in addition, after the first guide member 15 and the second guide member 16 are pressed and move inwards along the radial direction of the wheel body, the contact object of the track shoe 2 is expanded from the guide member to the outer side surface of the wheel body, that is, the rest areas of the outer circumferential surface of the thrust wheel 1 except the guide member are used as main bearing supporting bodies, so that the structural strength of the thrust wheel 1 can be ensured, more stable bearing support can be continuously provided after the buffering effect is obtained, and the anti-deviation self-correcting effect brought by the guide flange is always maintained on the basis.
Example 3:
on the basis of embodiment 2, as shown in fig. 4, the bottom of the first guiding element 15 is provided with a limiting groove 155 adapted to the limiting post 113, and the outer end of the limiting post 113 is inserted into the limiting groove 155 to form a limiting guiding structure, which is helpful to promote the stability of the first guiding element 15 in reciprocating movement along the radial direction of the first wheel body 11, and reduce the probability of the first guiding element 15 shifting during movement. It should be noted that, in the present embodiment, the limiting post 113 is in a strip-shaped plate flange structure in the axial direction of the first wheel body 11, the limiting groove 155 corresponds to the strip-shaped plate flange structure, and is a strip-shaped sinking groove structure with an opening 112 at the bottom, and the top of the limiting post 113 is always located in the limiting groove 155.
Further, the bottom end surface of the first guiding element 15 is located at two sides of the limiting groove 155 and provided with a plurality of spring grooves 154, the plurality of spring grooves 154 are uniformly distributed in two side areas of the limiting groove 155 of the bottom end surface of the first guiding element 15, a uniform bearing reset supporting effect is provided for the first guiding element 15, and the plurality of first springs 153 are correspondingly clamped in the spring grooves 154 one by one to jointly form a self-reset bearing structure of the first guiding element 15.
Example 4:
on the basis of embodiment 2, as shown in fig. 6, the first wheel 11 and the second wheel 12 are provided with a protecting piece 3 at the inner end in the wheel axial direction, and the protecting piece 3 is used for limiting and preventing the inner end of the track plate 2.
Specifically, the 24 protection pieces 3 are arranged in a central symmetry manner with the axial center line of the wheel body as an axis, and the assembly positions of the protection pieces 3 are in one-to-one correspondence with the movable cavities 111.
Referring to fig. 7 and 8, the protecting component 3 includes a stop block 31 disposed at the inner ends of the first wheel body 11 and the second wheel body 12, the stop block 31 is a sheet structure disposed along the radial direction of the wheel body, one side of the top of the stop block is close to the wheel body, which is an arc curved surface, the outer end of the arc curved surface forms an open structure, which is beneficial to avoiding the structure from interfering with other structures easily, and also has a limit effect on the inner end of the track plate 2, a pivot shaft 32 is disposed between the stop block 31 and the first wheel body 11 or the second wheel body 12, the pivot shaft 32 is pivoted on a pivot seat 33, the pivot seat 33 is fixedly disposed on the inner end surface of the first wheel body 11 or the second wheel body 12, and a second rib 34 is disposed between the bottom of the pivot seat 33 and the inner side wall of the wheel body in order to improve the structural strength of the pivot seat 33.
The stop block 31 is located at the outer end of the pivot and extends to the outer side of the wheel body, and forms a limiting and blocking structure at the inner end of the first wheel body 11 or the second wheel body 12 in the axial direction by using the arc curved surface of the stop block, so that the abutting structure of the track plate 2 and the thrust wheel 1 is always in a reasonable area, and the track plate 2 is prevented from falling off from the outer circumferential surface of the first wheel body 11 or the second wheel body 12 due to excessive deflection.
In fig. 8, the internal structure of the second wheel body 12 is illustrated as an example, the stop block 31 is located at the inner side end of the pivot shaft 32 and is hinged with a slide block 35, one end of the slide block 35 passes through the inner side wall of the second wheel body 12 and is hinged with the stop block 31, the other end extends into the movable cavity 111, the top of the slide block 35 and the bottom of the second guide piece 16 are respectively provided with mutually matched inclined structures, namely a first inclined surface 161 and a second inclined surface 351, when the second guide piece 16 is pressed and moves inwards along the radial direction of the wheel body, the second inclined surface 351 can be utilized to squeeze the first inclined surface 161 on the slide block 35, and a transverse external thrust to the slide block 35 is generated to drive the outer side end of the stop block 31 to overturn along the axial direction of the wheel body, and the outer side end of the overturned stop block 31 swings towards the side of the second wheel body 12, so as to form a pressed feedback limiting structure for limiting the track plate 2.
Further, the bottom end surface of the second guide member 16 is located at the inner side end of the movable cavity 111 of the sliding block 35, and a second spring 162 is provided, in this embodiment, the second spring 162 forms a self-resetting bearing structure of the second guide member 16, and the second spring 162 is used to help the pressed second guide member 16 moving outwards along the radial direction of the wheel body to reset, after the second guide member 16 moves outwards along the radial direction of the wheel body to reset, the second inclined surface 351 releases the extrusion relation to the first inclined surface 161, after the stop block 31 moves to a high position, the outer side end of the stop block 31 in the radial direction of the wheel body is in a curved arc surface structure bent towards the axial center of the wheel body, and can be automatically turned towards the axial center of the wheel body under the influence of the gravity of the stop block 31, and drives the sliding block 35 which is not constrained to move inwards of the movable cavity 111 to reset. It should be noted that, when the second spring 162 applies the bearing support to the second guide piece 16, the second inclined plane 351 and the first inclined plane 161 are in a separated state, this structure makes the influence of the second guide piece 16 to the slide block 35 after being pressed near the inner side end of the wheel body more direct, that is, when the position of the track plate 2 on the side deviates to the inner side of the wheel body in the axial direction when the second guide piece 16 abuts against the track plate 2, the second guide piece 16 can trigger the slide block 31 to turn over more quickly after being pressed, further the inner side end of the track plate 2 on the side is blocked and limited, thereby being beneficial to timely avoiding further more obvious offset of the track plate 2 on the side, and the second spring 162 is arranged near the outer side end of the track plate in the axial direction, so that when the track plate 2 on the side applies pressure to the area, the second guide piece 16 can perform a relatively obvious buffering process first, and then move with the continued movement, the second inclined plane 351 acts on the first inclined plane 161, thereby triggering the slide block 31 to turn over and participate in the work after the movement of the slide block 35, the track plate 2 on the other side, the track plate 2 is prevented from further falling off, and the phenomenon of the track plate 2 on the corresponding to the axial direction of the track plate 2 is prevented from being excessively biased in the axial direction, thereby avoiding the excessive offset phenomenon on the track plate 2 on the side.
In actual operation, as shown in fig. 9, when the track shoe 2 passes through and contacts the outer circumferential surface of the second wheel body 12, the second guide member 16 is extruded, so that the stop block 31 is triggered to turn over, the gap between the stop block 31 and the convex edge 13 at the outer end of the axial direction of the second wheel body 12 is reduced, and an inner and outer bidirectional limiting structure is formed, so that the track shoe 2 has a limiting blocking structure at the inner end or the outer end in the process of contacting the thrust wheel 1 if a large transverse offset occurs, and the risk that the track shoe 2 falls off from the thrust wheel 1 is greatly reduced. The structure makes the stop block 31 trigger to participate in work when being pressed by the corresponding guide piece, has strong pertinence, is favorable for carrying out reasonable feedback response on different areas, different stages and different deflection conditions, and particularly has obvious lateral deflection when the track plate 2 is just in contact with the thrust wheel 1, and can greatly improve the anti-falling effect of the track plate 2 on the thrust wheel 1 by double-side limiting.
In other embodiments, a transverse tension spring may be provided between the slider 35 and the inner sidewall of the movable cavity 111 to assist in timely repositioning of the slider 35 after the second guide 16 is lost.
Example 5:
as shown in fig. 13, this embodiment discloses a crawler device of an engineering machine, the crawler device includes a walking frame 4, a left frame 41 and a right frame 42 are symmetrically disposed on the left side and the right side of the walking frame 4, the left frame 41 and the right frame 42 together form a unit module through a driving wheel 5, a guiding wheel 6, a supporting wheel and the supporting wheel 1 in embodiment 4, a crawler unit is wound around the periphery of the unit module, the crawler unit is formed by connecting a plurality of crawler plates 2 back and forth, and a guiding structure is disposed between the crawler plates 2 and the supporting wheel 1.
The track shoe 2 includes a first link 21, a second link 22, a link 23, and a shoe body 24, as shown in fig. 10 and 11.
The first chain link 21 and the second chain link 22 are arranged at left and right sides of the bottom of the plate body 24 at intervals, a plurality of grooves 241 are formed in the outer end face of the plate body 24, mounting holes 242 are formed in the bottoms of the grooves 241, the first chain link 21 and the second chain link 22 are detachably connected with the plate body 24 through bolts and the mounting holes 242, and the first chain link 21 and the second chain link 22 form a connecting structure for connecting adjacent track shoes 2 front and back and a abutting structure for connecting the adjacent track shoes 2 with the thrust wheels 1 at the bottom of the plate body 24. In operation, referring to fig. 9, when track shoe 2 moves to the bottom of thrust wheel 1, the end surfaces of first link 21 and second link 22 on the side away from plate 24 abut against the outer circumferential surfaces of first wheel body 11 and second wheel body 12 on thrust wheel 1.
The front end and the rear end of the first chain link 21 and the second chain link 22 are provided with transverse through holes for penetrating the connecting rods 23, so that the front and rear adjacent track shoes 2 are conveniently connected in series to form annular track units.
In order to improve the stability of the track shoe 2 in the traveling direction and to better match the anti-deflection structure on the thrust wheel 1, as shown in fig. 11, the first link 21 and the second link 22 are provided with a wide-mouth end a and a narrow-mouth end b with different pitches at the front end and the rear end, and a V-shaped guiding structure is formed between the wide-mouth end a and the narrow-mouth end b. The structure can reasonably adapt to the pressed feedback type limit structure in the embodiment 4, when in actual work, the wide opening end a is positioned at the front side and is in contact with the supporting wheel 1 preferentially, when in contact, the wide opening end a contacts the guide piece near the axial outer side area of the wheel body, namely, the second spring 162 is utilized for buffering for one section, along with the continuous movement of the track plate 2, the contact position gradually changes from the wide opening end a to the narrow opening end b, in the process, the contact position changes from outside to inside along the axial direction of the wheel body, the anti-deviation self-correcting effect of the first chain link 21 or the second chain link 22 and the guide flange is further improved, and the limit stop 31 of the stop block 31 is more accurately controlled and the whole track device has more excellent comprehensive effect. The reason is that when the wide-mouth end a is firstly abutted against the outer circumferential surface of the wheel body, the buffer action is firstly carried out, the relatively comfortable track movement fluency and riding comfort are brought, then the abutting position is shifted to the inner side of the wheel body in the axial direction, the overturning effect of the trigger stop block 31 is gradually and obviously enhanced, the inner side wall spacing between the first chain link 21 and the second chain link 22 at the wide-mouth end a is larger, more sufficient space is provided for the overturning action of the stop block 31, the inner side wall spacing between the first chain link 21 and the second chain link 22 at the narrow-mouth end b is smaller, the abutting probability of the stop block 31 on the inner side after overturning is larger, the played limiting blocking effect is more obvious, the track shoe 2 is gradually transited from the wide-mouth end a to the narrow-mouth end b, and the relative fluency and smooth limiting guiding effect can be achieved by gradually increasing the abutting strength between the stop block 31 and the inner side walls of the chain links under the condition that the track shoe 2 is deflected, and the track shoe 2 is helped to be gradually corrected in the transverse direction.
Example 6:
on the basis of embodiment 5, because the first chain link 21, the second chain link 22 and the plate 24 are detachably connected, the bottom of the plate 24 is detachably connected with the inner side walls of the first chain link 21 and the second chain link 22, and a pre-fixing structure is arranged.
As shown in fig. 12, the pre-fixing structure is specifically a fixture block 243 fixed on the bottom end surface of the plate 24, in this embodiment, two fixture blocks 243 are laterally spaced apart, and for improving the structural strength of the fixture block 243, a first rib 244 is disposed at the inner end of the fixture block 243. During the use, before the assembly to track shoe 2, first chain link 21 and second chain link 22 utilize connecting rod 23 to connect earlier, form the base, lean on plate 24 on this base to utilize fixture block 243 card to establish in the top inboard of first chain link 21 and second chain link 22, constitute plate 24 can't be relative base lateral shifting with fixed knot structure, and then can not need support plate 24 when the mounting bolt, can make things convenient for track shoe 2's assembly operation, this in the maintenance change process of track shoe 2, can greatly reduced intensity of labour and promote maintenance efficiency.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The thrust wheel of a construction machine, characterized in that the thrust wheel (1) comprises:
an axle (18);
the wheel body is pivoted on the wheel shaft (18);
the guide piece is arranged on the wheel body, and the outer side end of the guide piece extends to the outside of the wheel body;
a guide flange provided at an outer end of the guide member;
the guide piece is movably connected with the wheel body, a self-resetting bearing structure is arranged between the guide piece and the wheel body, the guide piece moves towards the axle center side of the wheel body after being pressed in the radial direction of the wheel body, the abutting object of the track shoe (2) is expanded to the outer side surface of the wheel body from the guide piece, and the self-resetting bearing structure can drive the outer side end of the guide piece to move to the outer side of the wheel body in a free state;
the wheel body is provided with a plurality of movable cavities (111) which are symmetrical around the axial center line of the wheel body, the outer side end of each movable cavity (111) is provided with an opening (112) communicated with the outer side space of the wheel body, the guide piece is arranged in each movable cavity (111), a spring is arranged between the inner side end of the guide piece and the bottom of each movable cavity (111), the spring forms the self-resetting bearing structure, the outer side end of the guide piece is provided with a lug (151) penetrating through each opening (112), and the guide flange is fixedly arranged at the outer side end of each lug (151);
the wheel body consists of a first wheel body (11) and a second wheel body (12) which are symmetrically arranged along the axial direction of the wheel shaft (18), and the first wheel body (11) and the second wheel body (12) are provided with a protection piece (3) at the inner side end of the axial direction of the wheel body;
the protection piece (3) comprises a stop block (31) arranged at the inner side ends of the first wheel body (11) and the second wheel body (12), a pivot shaft (32) is arranged between the stop block (31) and the first wheel body (11) or the second wheel body (12), the stop block (31) is positioned at the outer side end of the pivot shaft (32) and extends to the outer side of the wheel body, the stop block (31) is positioned at the inner side end of the pivot shaft (32) and is hinged with a slide block (35), the slide block (35) extends into the movable cavity (111), the top of the slide block (35) and the bottom of the guide piece are respectively provided with mutually matched inclined surface structures, after the guide piece is pressed and moved inwards, the inclined surface structures can be utilized to transversely push out the slide block (35) and drive the outer side end of the stop block (31) to axially overturn along the wheel body, so as to form a pressed feedback limiting structure for limiting the inner limit of the track plate (2);
the guide piece comprises a first guide piece (15) and a second guide piece (16) which are arranged on the first wheel body (11) and the second wheel body (12), and guide flanges on the first guide piece (15) and the second guide piece (16) are of opposite diagonal structures, so that a deviation rectifying guide structure which is used for generating axial center movement of a wheel shaft (18) for the advancing track plate (2) after being abutted against the track plate (2) is formed.
2. The thrust wheel of a construction machine according to claim 1, wherein the first wheel body (11) and the second wheel body (12) are provided with protruding edges (13) at the outer ends in the axial direction of the wheel bodies.
3. The utility model provides a crawler attachment of engineering machine tool, its characterized in that, this crawler attachment includes walking frame (4), walking frame (4) left and right sides symmetry is equipped with left frame (41) and right frame (42), through drive wheel (5), leading wheel (6), bearing wheel and a kind of engineering machine tool's thrust wheel (1) constitute the unit module jointly on left frame (41) and right frame (42), the unit module periphery is around being equipped with the track unit, the track unit comprises a plurality of track shoes (2) front and back connection, be equipped with guide structure between track shoe (2) and the thrust wheel (1).
4. A track arrangement of a working machine according to claim 3, characterized in that the track shoe (2) comprises a first link (21), a second link (22), a connecting rod (23) and a shoe body (24); the novel structure is characterized in that the first chain link (21) and the second chain link (22) are arranged at the bottom of the plate body (24) at left and right intervals, transverse through holes for penetrating the connecting rods (23) are formed in the front end and the rear end of the first chain link (21) and the rear end of the second chain link (22), a wide opening end (a) and a narrow opening end (b) with different intervals are formed in the front end and the rear end of the first chain link (21) and the rear end of the second chain link (22), and a V-shaped guide structure is formed between the wide opening end (a) and the narrow opening end (b).
5. The crawler belt device of the construction machine according to claim 4, wherein the bottom of the plate body (24) is detachably connected with the inner side walls of the first chain link (21) and the second chain link (22), and is provided with a pre-fixing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311282571.4A CN117002640B (en) | 2023-10-07 | 2023-10-07 | Thrust wheel and crawler device of engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311282571.4A CN117002640B (en) | 2023-10-07 | 2023-10-07 | Thrust wheel and crawler device of engineering machinery |
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| CN117002640A CN117002640A (en) | 2023-11-07 |
| CN117002640B true CN117002640B (en) | 2023-12-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117382759B (en) * | 2023-12-13 | 2024-03-08 | 泉州重达机械有限公司 | Stable anti-drop's track thrust wheel |
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