CN220180965U

CN220180965U - Moment limiting device for crawler plate of crawler crane

Info

Publication number: CN220180965U
Application number: CN202321990672.2U
Authority: CN
Inventors: 董学礼; 蒋建奎; 周斌
Original assignee: Jiangsu Renmin Machinery Co ltd
Current assignee: Jiangsu Renmin Machinery Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-12-15
Anticipated expiration: 2033-07-27

Abstract

The utility model provides a moment limiting device for a crawler belt plate of a crawler crane, and particularly relates to the technical field of cranes. The torque limiting device for the crawler belt plate of the crawler crane comprises a toothed chain unit, a crawler belt plate and two groups of limiting devices arranged between the toothed chain unit and the crawler belt plate, wherein the crawler belt plate is fixedly connected to the surface of the toothed chain unit through bolts, the two groups of crawler belt plates are connected in a rotating mode, the multiple groups of crawler belt plates are connected in a closed annular mode, the two groups of limiting devices are symmetrically distributed, and two ends of each limiting device are respectively and movably connected with the corresponding crawler belt plate and the corresponding toothed chain unit. According to the utility model, the plurality of groups of limiting devices are arranged between the toothed chain unit and the track shoes, the limiting devices are symmetrically distributed and connected with the track shoes, when the adjacent track shoes rotate relatively, the two groups of limiting devices connected with the same track shoe respectively carry out traction and blocking effects on the track shoes, and the limiting devices can help the rotating track shoes to return.

Description

Moment limiting device for crawler plate of crawler crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a moment limiting device for a crawler plate of a crawler crane.

Background

The crawler crane is one of large-scale machines commonly used on the site, the walking wheel of the crawler crane is a crawler wheel, the crawler wheel mainly comprises a crawler, a driving wheel, a guide wheel, a supporting chain wheel and a supporting wheel, the crawler is a closed ring formed by connecting a plurality of groups of crawler plates, the driving wheel, the guide wheel, the supporting chain wheel and the supporting wheel are all arranged inside the crawler, the steering of the crawler crane is mainly realized through different speeds of the crawler wheels on two sides, the crawler wheels can rotate relatively to a certain extent in the steering process, the crawler plates excessively rotate and are not easy to reset, the crawler is easy to misplace, and the crawler wheels are easy to deviate in the walking process, so that a moment limiting device for the crawler plates of the crawler crane is needed to solve the problem.

Disclosure of Invention

The utility model provides a moment limiting device for a crawler plate of a crawler crane, which aims to solve the technical problems that the crawler plate is difficult to reset due to excessive rotation and can easily cause dislocation of the crawler and the crawler wheel is easy to deviate when walking.

The torque limiting device for the crawler belt plate of the crawler crane provided by the utility model comprises the following components: two groups of limiting devices are arranged among the toothed chain units, the track shoes and the toothed chain units, and are characterized in that the toothed chain units are connected with the two groups of toothed chain units in a rotating way, and the toothed chain units are connected in a closed ring shape; the track shoes are fixedly connected to the surfaces of the toothed chain units through bolts, two groups of connected track shoes are connected in a rotating mode, and a plurality of groups of track shoes are connected in a closed annular mode; the limiting devices are symmetrically distributed, and two ends of the limiting devices are respectively and movably connected with the corresponding track plate and the toothed chain unit.

Preferably, the limiting device comprises a telescopic shaft cylinder, a telescopic shaft rod and a limiting spring, wherein the telescopic shaft rod and the limiting spring are arranged inside the telescopic shaft cylinder, and two ends of the limiting spring are respectively connected with the inner wall of the telescopic shaft cylinder and the telescopic shaft rod.

Preferably, the toothed chain unit comprises a unit main body, wherein the unit main body is fixedly connected with a mounting plate, two groups of strip-shaped protrusions are arranged on the upper surface of the mounting plate, and two groups of first mounting holes are formed in the surface of the strip-shaped protrusions.

Preferably, the track shoe comprises a plate body, a plurality of groups of strip-shaped bulges are arranged on the surface of the plate body, a plurality of groups of second assembly holes are symmetrically formed in the middle of the surface of the plate body, a connecting convex shaft is fixedly connected to one side surface of the plate body, and a U-shaped connecting groove is formed in the other side surface of the plate body.

Preferably, the two end side surfaces of the connecting convex shaft are respectively and fixedly connected with shaft piles.

Preferably, the movable groove is respectively arranged on two symmetrical side surfaces of the connecting groove, two groups of stop blocks are symmetrically arranged in the movable groove, a reset spring is arranged between the stop blocks and the inner wall of the movable groove, and two ends of the reset spring are respectively fixedly connected with the stop blocks and the inner wall of the movable groove.

Compared with the related art, the moment limiting device for the crawler plate of the crawler crane has the following beneficial effects:

the track comprises a closed annular formed by rotating and connecting a plurality of groups of track shoes and a closed annular fixed connection formed by rotating and connecting a plurality of groups of toothed chain units, a plurality of groups of limiting devices are arranged between the toothed chain units and the track shoes and are symmetrically distributed and connected with the track shoes, when the adjacent track shoes rotate relatively, two groups of limiting devices connected with the same track shoe respectively drag and block the track shoes, and the limiting devices can help the rotating track shoes to return to the original position, so that the problem of track wheel walking offset caused by track shoe offset is reduced.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of a torque limiting device for a track plate of a crawler crane according to the present utility model;

FIG. 2 is a schematic view of the structure of the toothed chain unit of the present utility model;

FIG. 3 is a cross-sectional view of the restriction device in accordance with the present utility model;

FIG. 4 is a schematic view of the track shoe of the present utility model;

FIG. 5 is an enlarged view of A in FIG. 4;

fig. 6 is an enlarged view of B in fig. 4.

Reference numerals in the drawings:

1. a toothed chain unit; 11. a unit main body; 12. an assembly plate; 13. a first assembly hole; 2. track shoes; 21. a plate body; 22. a second assembly hole; 23. connecting the convex shaft; 24. a connection groove; 25. a movable groove; 26. a stop block; 27. a return spring; 28. a shaft pile; 3. a restriction device; 31. a telescopic shaft cylinder; 32. a telescopic shaft lever; 33. limiting the spring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In the present specification, "plurality" means two or more.

In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.

Referring to fig. 1-6, an embodiment of the present utility model provides a moment limiting device for a crawler belt plate of a crawler crane, comprising: the track shoe is characterized in that the toothed chain units 1 are connected with two groups of toothed chain units 1 in a rotating way, and the toothed chain units 1 are connected in a closed annular way; the track shoes 2 are fixedly connected to the surfaces of the toothed chain units 1 through bolts, two groups of the track shoes 2 are connected in a rotating mode, and the groups of the track shoes 2 are connected in a closed annular mode; the limiting devices 3 are symmetrically distributed, and two ends of the limiting devices 3 are respectively and movably connected with the corresponding track plate 2 and the toothed chain unit 1.

Specific: the limiting device 3 comprises a telescopic shaft barrel 31, a telescopic shaft rod 32 and a limiting spring 33, wherein the telescopic shaft rod 32 and the limiting spring 33 are arranged in the telescopic shaft barrel 31, and two ends of the limiting spring 33 are respectively connected with the inner wall of the telescopic shaft barrel 31 and the telescopic shaft rod 32;

it should be noted that: the opposite ends of the telescopic shaft rod 32 and the telescopic shaft barrel 31 are respectively and movably connected with the corresponding toothed chain unit 1 and the track shoe 2, two groups of limiting devices 3 connected with the same track shoe 2 are respectively and symmetrically distributed along the width central axis of the track shoe 2, when rotation occurs between two adjacent groups of track shoes 2, the limiting device 3 close to the rotation center generates thrust to the track shoe 2, and the limiting device 3 far from the rotation center generates traction to the track shoe 2, so that the aim of limiting the moment of the track shoe 2 is realized, and the track shoe 2 is helped to rotate to the original position;

specific: the toothed chain unit 1 comprises a unit main body 11, wherein a mounting plate 12 is fixedly connected in the unit main body 11, two groups of strip-shaped protrusions are arranged on the upper surface of the mounting plate 12, and two groups of mounting holes I13 are formed in the surface of the strip-shaped protrusions;

specific: the track shoe 2 comprises a plate body 21, a plurality of groups of strip-shaped bulges are arranged on the surface of the plate body 21, a plurality of groups of assembly holes II 22 are symmetrically arranged in the middle of the surface of the plate body 21, a connecting convex shaft 23 is fixedly connected to one side surface of the plate body 21, and a U-shaped connecting groove 24 is formed in the other side surface of the plate body 21;

also to be described is: when the track plate 2 is fixedly connected with the toothed chain unit 1 in an assembling way, the second assembling hole 22 at a proper position on the track plate 2 is overlapped with the first assembling hole 13 corresponding to the toothed chain unit 1, the fixing bolt penetrates into the first assembling hole 13 and the second assembling hole 22 to be fixedly connected with the toothed chain unit 1, and when the track plate 2 is arranged on the toothed chain unit 1, the bulges on the surface of the plate body 21 are contacted with the ground, so that the friction force between the track plate 2 and the ground can be increased by the bulges, and the grip of the track wheel is increased;

specific: shaft piles 28 are fixedly connected to the side surfaces of the two ends of the connecting convex shaft 23 respectively.

Specific: the two symmetrical sides of the connecting groove 24 are respectively provided with a movable groove 25, two groups of stop blocks 26 are symmetrically arranged in the movable groove 25, a return spring 27 is arranged between the stop blocks 26 and the inner wall of the movable groove 25, and two ends of the return spring 27 are respectively fixedly connected with the stop blocks 26 and the inner wall of the movable groove 25;

it should be noted that: when two adjacent groups of track shoes 2 are connected, the connecting convex shafts 23 on one group of track shoes 2 are embedded into the connecting grooves 24 on the other group of track shoes 2, the shaft piles 28 are embedded into the corresponding movable grooves 25 and are arranged between the two groups of stop blocks 26 in the movable grooves 25, and when the two adjacent groups of track shoes 2 rotate, the shaft piles 28 overcome the stop blocks 26 in the movable grooves 25 to move, and at the moment, the elastic force of the reset spring 27 is the resistance applied on the shaft piles 28 to help the track shoes 2 to rotate to the original position.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. A moment limiting device for a crawler of a crawler crane, comprising: two groups of limiting devices (3) are arranged between the toothed chain unit (1) and the track shoe (2) and are characterized in that,

the toothed chain units (1) are connected with two groups of toothed chain units (1) in a rotating way, and a plurality of groups of toothed chain units (1) are connected in a closed ring shape;

the track shoes (2) are fixedly connected to the surfaces of the toothed chain units (1) through bolts, two groups of track shoes (2) are connected in a rotating mode, and the groups of track shoes (2) are connected in a closed annular mode;

the limiting devices (3) are symmetrically distributed, and two ends of each limiting device (3) are respectively and movably connected with the corresponding track plate (2) and the corresponding toothed chain unit (1).

2. The moment limiting device for a crawler board of a crawler crane according to claim 1, wherein the limiting device (3) comprises a telescopic shaft cylinder (31), a telescopic shaft rod (32) and a limiting spring (33), the telescopic shaft rod (32) and the limiting spring (33) are arranged inside the telescopic shaft cylinder (31), and two ends of the limiting spring (33) are respectively connected with the inner wall of the telescopic shaft cylinder (31) and the telescopic shaft rod (32).

3. Moment limiting device for crawler belt plates of a crawler crane according to claim 1, characterized in that the toothed chain unit (1) comprises a unit main body (11), a fitting plate (12) is fixedly connected in the unit main body (11), two groups of strip-shaped protrusions are arranged on the upper surface of the fitting plate (12), and two groups of fitting holes (13) are formed in the surface of the strip-shaped protrusions.

4. The moment limiting device for the crawler belt plate of the crawler crane according to claim 1, wherein the crawler belt plate (2) comprises a plate body (21), a plurality of groups of strip-shaped bulges are arranged on the surface of the plate body (21), a plurality of groups of assembly holes II (22) are symmetrically formed in the middle of the surface of the plate body (21), a connecting protruding shaft (23) is fixedly connected to one side surface of the plate body (21), and a U-shaped connecting groove (24) is formed in the other side surface of the plate body (21).

5. Moment limiting device for crawler belt plates of a crawler crane according to claim 4, characterized in that the side surfaces of the two ends of the connecting protruding shaft (23) are fixedly connected with shaft piles (28) respectively.

6. The moment limiting device for the crawler belt plate of the crawler crane according to claim 4, wherein the two symmetrical sides of the connecting groove (24) are respectively provided with a movable groove (25), two groups of stop blocks (26) are symmetrically arranged in the movable groove (25), a return spring (27) is arranged between the stop blocks (26) and the inner wall of the movable groove (25), and two ends of the return spring (27) are respectively fixedly connected with the stop blocks (26) and the inner wall of the movable groove (25).