Tracked crane track undercarriage reinforcement device

Abstract

This utility model discloses a track chassis reinforcement device for tracked cranes in the field of tracked crane technology, including a chassis, a protective plate, and a tensioning mechanism. The tensioning mechanism includes a sleeve with a square hole in the middle. A fixing ring is disposed on the top of the sleeve, and a positioning ring is disposed on the top of the fixing ring. A first threaded hole is disposed on the inner wall of the fixing ring. A square block is disposed at the bottom of the square hole, and a threaded rod is disposed on the top of the square block. A connecting plate is fixedly installed on the top of the threaded rod, and a telescopic rod is installed on the top of the connecting plate. A spring is sleeved on the telescopic rod. The tensioning mechanism adjusts the preload according to different working conditions. Appropriately tensioned tracks can better disperse impact forces, reduce instantaneous stress on structural components (such as support rollers and drive wheels), and reasonable tension can avoid local stress concentration, protect track plates, pins, rollers, and other components, and reduce maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the field of crawler crane technology, specifically to a crawler chassis reinforcement device for crawler cranes. Background Technology

[0002] The crawler crane chassis is the core support and travel system of a crawler crane. Its design directly affects the stability, load-bearing capacity, and operational adaptability of the crane. For example, a crawler chassis reinforced protective structure disclosed in Chinese patent literature (application number: CN202223081454.5) is equipped with a tensioning mechanism to tension the tracks, but it lacks a tension adjustment mechanism. It cannot adjust the optimal tension according to different working conditions, thus failing to reduce friction between the various components of the crawler crane chassis. This also makes it impossible to avoid stress concentration that exacerbates wear on the track components. In addition, the protective frame is not installed using a quick-release structure, which will reduce the efficiency of track maintenance and replacement.

[0003] Therefore, we propose a track undercarriage reinforcement device for tracked cranes. Utility Model Content

[0004] The purpose of this invention is to provide a tracked chassis reinforcement device for tracked cranes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a track chassis reinforcement device for a tracked crane, comprising a chassis, a protective plate, and a tensioning mechanism, wherein the tensioning mechanism comprises a sleeve, and a square hole is provided in the middle of the sleeve; A retaining ring is disposed at the top of the sleeve; A positioning ring is disposed on the top of the fixed ring, and a first threaded hole is provided on the inner wall of the fixed ring. A square block is positioned at the bottom of the square hole; A threaded rod is provided on the top of the square block; A connecting plate is fixedly installed on the top of the threaded rod; The telescopic rod is installed on top of the connecting plate; A spring is fitted onto the telescopic rod; A guide wheel fixing plate is fixedly installed on the top of the telescopic rod, and a guide wheel is provided on the guide wheel fixing plate.

[0006] Preferably, the lower part of the positioning ring is provided with a connecting groove, and the top of the fixing ring is provided with a mounting plate, the mounting plate cooperating with the connecting groove.

[0007] Preferably, both the connecting groove and the mounting plate have a T-shaped cross-section, and the bottom of the fixing ring is connected to the sleeve in the same way as the fixing ring is connected to the positioning ring.

[0008] Preferably, the chassis is provided with a second threaded hole, the protective plate is provided with a mounting hole, and a bolt is provided in the second threaded hole.

[0009] Preferably, the side of the fixing ring is configured as a regular hexagon.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The threaded rod rotates and moves upward, pushing the connecting plate upward, compressing the spring, storing potential energy in the spring, and releasing it to pre-tighten the track of the track crane. The spring is adjusted by raising and lowering the threaded rod. The tensioning mechanism adjusts the pre-tension force appropriately according to different working conditions. Appropriately tensioned tracks can better disperse impact force, reduce instantaneous stress on structural components (such as track rollers and drive wheels), and reasonable tension can avoid local stress concentration, protect track plates, pins, rollers and other components, and reduce maintenance frequency.

[0011] 2. Remove the bolts to disassemble the protective plate, making it easier to maintain and replace the tracks. Connect the bolts through the through holes and threaded holes on the protective plate, and tighten the bolts to quickly install and fix the protective plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the crawler crane structure of this utility model; Figure 3 This is a schematic diagram of the tensioning mechanism of this utility model; Figure 4 This is a schematic diagram of the internal structure of the tensioning mechanism of this utility model; Figure 5 This is an enlarged view of section A of this utility model; Figure 6 This is a schematic diagram of the protective plate structure of this utility model; Figure 7 This is a schematic diagram of the installation structure of the protective plate of this utility model.

[0013] In the diagram: 1. Chassis; 2. Protective plate; 3. Tensioning mechanism; 4. Sleeve; 5. Fixing ring; 51. First threaded hole; 6. Positioning ring; 7. Square hole; 8. Square block; 9. Threaded rod; 91. Connecting plate; 10. Telescopic rod; 11. Spring; 12. Guide wheel fixing plate; 13. Guide wheel; 14. Connecting groove; 15. Mounting plate; 16. Second threaded hole; 17. Mounting hole; 18. Bolt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-7 This utility model provides a technical solution: a track chassis reinforcement device for a tracked crane, including a chassis 1, a protective plate 2, and a tensioning mechanism 3. The tensioning mechanism 3 includes a sleeve 4, a square hole 7 in the middle of the sleeve 4, a fixing ring 5 on the top of the sleeve 4, a positioning ring 6 on the top of the fixing ring 5, a first threaded hole 51 on the inner wall of the fixing ring 5, a square block 8 at the bottom of the square hole 7, a threaded rod 9 on the top of the square block 8, a connecting plate 91 fixedly installed on the top of the threaded rod 9, a telescopic rod 10 installed on the top of the connecting plate 91, a spring 11 sleeved on the telescopic rod 10, and a guide wheel fixing plate 12 fixedly installed on the top of the telescopic rod 10. A guide wheel 13 is provided on the guide wheel fixing plate 12. By using a tool (such as a wrench) to rotate the fixing ring 5, the threaded hole 51 in the middle of the fixing ring 5 engages with the threaded rod 9, causing the threaded rod 9 to move upward. The square block 8 at the bottom of the threaded rod 9 engages with the square hole 7 to prevent the threaded rod 9 from rotating. The upward rotation of the threaded rod 9 pushes the connecting plate 91 upward, compressing the spring 11 and storing and releasing its potential energy, thus pre-tightening the track. The spring 11 is adjusted by raising and lowering the threaded rod 9. The tensioning mechanism 3 adjusts the pre-tension force appropriately according to different working conditions. Appropriate tension can prevent the track from derailing due to slack when operating on complex terrain (such as slopes and soft ground). Moderately tensioned tracks can better disperse impact force and reduce the instantaneous stress of structural components (such as track rollers and drive wheels). Reasonable tension can avoid local stress concentration, protect track plates, pins, rollers and other components, and reduce maintenance frequency.

[0016] Reference embodiment: The lower part of the positioning ring 6 is provided with a connecting groove 14, and the top of the fixing ring 5 is provided with a mounting plate 15. The mounting plate 15 cooperates with the connecting groove 14. The cross-section of both the connecting groove 14 and the mounting plate 15 is T-shaped. The bottom of the fixing ring 5 is connected to the sleeve 4 in the same way as the fixing ring 5 is connected to the positioning ring 6. The side of the fixing ring 5 is set as a regular hexagon. The height of the threaded rod 9 can be adjusted by rotating the fixing ring 5 using a tool.

[0017] Reference embodiment: The chassis 1 is provided with a second threaded hole 16, and the protective plate 2 is provided with a mounting hole 17. A bolt 18 is provided in the second threaded hole 16. By using a tool (such as a wrench) to rotate the bolt 18, the bolt 18 can be removed, and the protective plate 2 can be disassembled to facilitate the maintenance and replacement of the tracks. The bolt 18 is passed through the through hole 17 provided on the protective plate 2 and connected to the second threaded hole 16. The bolt 18 is tightened to quickly install and fix the protective plate 2.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crawler chassis reinforcement device for a crawler crane, characterized in that It includes a chassis (1), a protective plate (2), and a tensioning mechanism (3). The tensioning mechanism (3) includes a sleeve (4), and a square hole (7) is provided in the middle of the sleeve (4). A retaining ring (5) is provided on the top of the sleeve (4); A positioning ring (6) is provided on the top of the fixing ring (5), and a first threaded hole (51) is provided on the inner wall of the fixing ring (5). A square block (8) is disposed at the bottom of the square hole (7); Threaded rod (9), threaded rod (9) is set on top of the square block (8); A connecting plate (91) is fixedly installed on the top of the threaded rod (9); Telescopic rod (10), the telescopic rod (10) is installed on the top of the connecting plate (91); Spring (11) is sleeved on the telescopic rod (10); Guide wheel fixing plate (12) is fixedly installed on the top of the telescopic rod (10), and guide wheel (13) is provided on the guide wheel fixing plate (12).

2. The track undercarriage reinforcement device for a tracked crane according to claim 1, characterized in that: The lower part of the positioning ring (6) is provided with a connecting groove (14), and the top of the fixing ring (5) is provided with a mounting plate (15), which cooperates with the connecting groove (14).

3. The track chassis reinforcement device for tracked cranes according to claim 2, characterized in that: The connecting groove (14) and the mounting plate (15) are both T-shaped in cross section. The bottom of the fixing ring (5) is connected to the sleeve (4) in the same way as the fixing ring (5) is connected to the positioning ring (6).

4. The track undercarriage reinforcement device for a tracked crane according to claim 1, characterized in that: The chassis (1) is provided with a second threaded hole (16), the protective plate (2) is provided with a mounting hole (17), and a bolt (18) is provided in the second threaded hole (16).

5. The track undercarriage reinforcement device for a tracked crane according to claim 1, characterized in that: The side of the fixing ring (5) is set as a regular hexagon.

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