Track adjuster of excavator

Abstract

The utility model relates to the technical field of track adjusters, in particular to an excavator track adjuster. The crawler belt comprises a connecting frame, a driving wheel is installed on the inner wall of the connecting frame, a guide wheel is arranged on the inner wall of the connecting frame, the arc face of the driving wheel and the arc face of the guide wheel are in transmission connection with a crawler belt body, two drag chain wheels are fixedly connected to the upper surface of the connecting frame, and a plurality of supporting wheels are fixedly connected to the lower surface of the connecting frame. An adjusting structure is arranged on the inner wall of the connecting frame and comprises a limiting groove, a connecting groove, an auxiliary groove and a plurality of limiting holes, and the limiting groove, the connecting groove, the auxiliary groove and the limiting holes are all formed in the connecting frame. The problems that according to the adjusting mode, only a grease gun can be used for adjusting the caterpillar band, when the grease gun is not located beside a worker or a fault occurs, the worker cannot adjust the caterpillar band, normal operation of the worker is affected, and the working efficiency of the worker is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler adjusters, in particular to an excavator crawler adjuster. Background Art

[0002] A crawler adjuster is mainly an excavator crawler adjuster used to adjust the tightness of an excavator crawler and is relatively common in the prior art.

[0003] In the prior art, a grease gun is used to inject grease into a tension cylinder to adjust the tightness of the crawler. Since this adjustment method can only use a grease gun to adjust the crawler, when the grease gun is not around the operator or fails, the operator cannot adjust the crawler, which will affect the normal operation of the operator and lead to a decrease in work efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defect in the prior art that since this adjustment method can only use a grease gun to adjust the crawler, when the grease gun is not around the operator or fails, the operator cannot adjust the crawler, which will affect the normal operation of the operator and lead to a decrease in work efficiency, and to propose an excavator crawler adjuster.

[0005] To achieve the above object, the utility model adopts the following technical solution: An excavator track adjuster, including a connecting frame, a driving wheel is installed on the inner wall of the connecting frame, a guide wheel is arranged on the inner wall of the connecting frame, a track body is in transmission connection with the arc surfaces of the driving wheel and the guide wheel, two idler wheels are fixedly connected to the upper surface of the connecting frame, a plurality of supporting wheels are fixedly connected to the lower surface of the connecting frame, an adjusting structure is arranged on the inner wall of the connecting frame, and the adjusting structure includes a limiting groove, a connecting groove, an auxiliary groove and a plurality of limiting holes. The limiting groove, the connecting groove, the auxiliary groove and the plurality of limiting holes are all opened on the connecting frame. The connecting groove and the limiting groove communicate with each other. A fixing frame is slidably connected to the inner wall of the limiting groove. The fixing frame is rotatably connected to the guide wheel. One side of the fixing frame close to the connecting groove is fixedly connected with a telescopic rod. One end of the telescopic rod away from the fixing frame is fixedly connected with a fixing block. The fixing block is slidably connected to the connecting groove. A first spring is arranged between the fixing block and the fixing frame. Two ends of the first spring are respectively fixedly connected to the fixing frame and the fixing block. A top block is slidably connected to the inner wall of the connecting groove. The top block abuts against the fixing block. One side of the top block away from the fixing block is fixedly connected with a lead screw. A rotating column is in threaded connection with the arc surface of the lead screw. The rotating column is rotatably connected to the connecting groove. The rotating column is rotatably connected to the connecting frame. A worm gear and a worm are rotatably connected to the inner wall of the auxiliary groove. The worm gear is meshed with the worm. The worm gear is fixedly connected to the rotating column. The worm is rotatably connected to the connecting frame. One end of the worm is fixedly connected with a connecting block. A plug rod is slidably connected to the inner wall of the connecting block. The plug rod is slidably connected to the limiting hole.

[0006] The effect achieved by the above components is that by setting the adjusting structure, when the tightness of the track body is loose, the operator can rotate the connecting block to move the fixing frame away from the auxiliary groove. The fixing frame drives the guide wheel to move away from the auxiliary groove, and the guide wheel drives the track body to move, so that the operator can conveniently and quickly adjust the tightness of the track body, improving the work efficiency of the operator.

[0007] Preferably, a second spring is sleeved on the arc surface of the plug rod. Two ends of the second spring are respectively fixedly connected to the connecting block and the plug rod.

[0008] The effect achieved by the above components is that the second spring can limit the plug rod, preventing the plug rod from sliding out of the inner wall of the limiting hole by itself during the movement of the track.

[0009] Preferably, a pull ring is fixedly connected to one end of the plug rod away from the limiting hole. The cross section of the pull ring is circular.

[0010] The effect achieved by the above components is that the pull ring can facilitate the operator to move the plug rod, improving the operation convenience of the operator.

[0011] Preferably, the insertion rod is a stainless steel rod.

[0012] The effects achieved by the above components are as follows: The stainless steel rod has good wear resistance and large strength, which can prevent the insertion rod from breaking during short-term use.

[0013] Preferably, an auxiliary structure is provided on one side of the connecting frame. The auxiliary structure includes a positioning plate and two fixing plates. The positioning plate and the two fixing plates are both fixedly connected to the connecting frame. An engagement groove is formed in the inner wall of the fixing plate. An adjusting block is slidably connected to the inner wall of the engagement groove. A protective cover is fixedly connected to the sides of the two adjusting blocks away from the connecting frame. A clamping block is fixedly connected to the side of the protective cover close to the positioning plate. A moving block is slidably connected to the inner wall of the positioning plate. A threaded rod is rotatably connected to the upper surface of the moving block. The threaded rod is threadedly connected to the positioning plate. One end of the threaded rod away from the moving block is fixedly connected to a connecting column.

[0014] The effects achieved by the above components are as follows: By providing the auxiliary structure, after the tension of the crawler body is adjusted by moving the guiding wheel, the operator can move the protective cover to slide the clamping block into the inner wall of the positioning plate, and then rotate the connecting column to slide the moving block into the inner wall of the clamping block, thereby preventing mud and sewage from commonly adhering to the surface of the connecting block during the operation of the excavator and affecting the operator's next adjustment of the crawler.

[0015] Preferably, a plurality of anti-slip grooves are formed on the arc surface of the connecting column, and the plurality of anti-slip grooves are evenly formed on the arc surface of the connecting column.

[0016] The effects achieved by the above components are as follows: The anti-slip grooves can increase the friction between the operator's hand and the connecting column, and can prevent the operator from slipping when rotating the connecting column.

[0017] Preferably, a limiting rod is fixedly connected to the inner wall of the engagement groove, and the limiting rod is slidably connected to the adjusting block.

[0018] The effects achieved by the above components are as follows: The limiting rod can limit the adjusting block and prevent the adjusting block from being misaligned when sliding on the inner wall of the engagement groove.

[0019] In summary, the beneficial effects of the present invention are as follows:

[0020] In the present utility model, when the crawler body of the excavator becomes loose, the operator can adjust the crawler body through the crawler adjuster. When the tightness of the crawler body is loose, the operator can first move the pull ring to drive the insertion rod to move away from the limit hole. The pull ring can facilitate the operator to move the insertion rod, improving the operation convenience of the operator. Then, the insertion rod drives the second spring to stretch. The second spring can limit the insertion rod, preventing the insertion rod from sliding out of the inner wall of the limit hole during the movement of the crawler. Until the insertion rod slides out of the inner wall of the limit hole, the insertion rod is a stainless steel rod, which has good wear resistance and high strength, preventing the insertion rod from breaking during short-term use. Then, the operator rotates the connecting block, which drives the worm to rotate. The worm drives the worm wheel to rotate, and the worm wheel drives the rotating column to rotate. The rotating column drives the lead screw to move away from the auxiliary groove. The lead screw drives the top block to move away from the auxiliary groove. The top block drives the fixed block to move away from the auxiliary groove. The fixed block drives the first spring and the telescopic rod to move away from the auxiliary groove. The spring drives the fixed frame to move away from the auxiliary groove. The fixed frame drives the guide wheel to move away from the auxiliary groove. Then, the guide wheel drives the crawler body to move. When the guide wheel is in contact with the crawler body, the first spring will be slightly compressed. By setting the adjustment structure, it is convenient for the operator to quickly adjust the tightness of the crawler body, thereby accelerating the maintenance speed of the operator and improving the maintenance efficiency of the operator.

[0021] In the present utility model, when the adjustment of the tightness of the crawler body is completed by moving the guide wheel, the operator can first move the protective cover so that the protective cover moves towards the positioning plate. The protective cover drives the clamping block and the two adjusting blocks to move towards the positioning plate. The adjusting block slides on the arc surface of the limiting rod. The limiting rod can limit the adjusting block, preventing the adjusting block from being misaligned when sliding on the inner wall of the connecting groove. Until the clamping block slides into the inner wall of the positioning plate, then the operator rotates the connecting column, which drives the threaded rod to rotate. The threaded rod moves towards the clamping block. The threaded rod drives the moving block to move towards the clamping block until the moving block slides into the inner wall of the clamping block. The anti-slip groove provided on the arc surface of the connecting column can increase the friction between the operator's hand and the connecting column, preventing the operator from slipping when rotating the connecting column. By setting the auxiliary structure, the effect of protecting the connecting block and the insertion rod is achieved, preventing soil and sewage from commonly adhering to the surface of the connecting block during the operation of the excavator, affecting the operator's next adjustment of the crawler, and thus reducing the maintenance efficiency of the operator for the crawler. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 For the right-side structural schematic diagram of the present utility model Figure 1 ;

[0024] Figure 3 For the structural schematic diagram of the adjustment structure of the present utility model

[0025] Figure 4 For the side structural schematic diagram of the present utility model Figure 3 ;

[0026] Figure 5 For the enlarged view at position A of the present utility model Figure 4 ;

[0027] Figure 6 For the auxiliary structural schematic diagram of the present utility model

[0028] Figure 7 For the disassembled structural schematic diagram of the auxiliary structure of the present utility model

[0029] Figure 8 For the partial structural schematic diagram of the present utility model Figure 7 ;

[0030] Figure 9 For the enlarged view at position B of the present utility model Figure 8 ;

[0031] Legend: 1. Crawler body; 2. Driving wheel; 3. Guide wheel; 4. Adjustment structure; 401. Limit groove; 402. Connection groove; 403. Auxiliary groove; 404. Fixed frame; 405. Telescopic rod; 406. First spring; 407. Fixed block; 408. Top block; 409. Screw rod; 410. Rotating column; 411. Worm gear; 412. Worm; 413. Limit hole; 414. Connection block; 415. Insertion rod; 416. Second spring; 417. Pull ring; 5. Auxiliary structure; 501. Fixed plate; 502. Connection groove; 503. Limit rod; 504. Adjustment block; 505. Protective cover; 506. Clamping block; 507. Positioning plate; 508. Moving block; 509. Threaded rod; 510. Connection column; 511. Anti-slip groove; 6. Support wheel; 7. Idler sprocket; 8. Connection frame Detailed implementation manners

[0032] Refer to Figures 1 to 9As shown in the figure, the present utility model provides a technical solution: an excavator track adjuster, which includes a connecting frame 8. A driving wheel 2 is installed on the inner wall of the connecting frame 8. A guide wheel 3 is arranged on the inner wall of the connecting frame 8. A crawler body 1 is in driving connection with the arc surfaces of the driving wheel 2 and the guide wheel 3. Two idler wheels 7 are fixedly connected to the upper surface of the connecting frame 8. A plurality of support wheels 6 are fixedly connected to the lower surface of the connecting frame 8. An adjusting structure 4 is provided on the inner wall of the connecting frame 8. An auxiliary structure 5 is provided on one side of the connecting frame 8.

[0033] The following specifically describes the specific settings and functions of its adjusting structure 4 and auxiliary structure 5.

[0034] Refer to Figures 2 to 5As shown in the figure, in this embodiment: The adjustment structure 4 includes a limit groove 401, a connection groove 402, an auxiliary groove 403, and a number of limit holes 413. The limit groove 401, the connection groove 402, the auxiliary groove 403, and the number of limit holes 413 are all opened on the connection frame 8. The connection groove 402 communicates with the limit groove 401. A fixing frame 404 is slidably connected to the inner wall of the limit groove 401. The fixing frame 404 is rotatably connected to the guide wheel 3. A telescopic rod 405 is fixedly connected to one side of the fixing frame 404 close to the connection groove 402. One end of the telescopic rod 405 away from the fixing frame 404 is fixedly connected to a fixing block 407. The fixing block 407 is slidably connected to the connection groove 402. A first spring 406 is provided between the fixing block 407 and the fixing frame 404. The two ends of the first spring 406 are respectively fixedly connected to the fixing frame 404 and the fixing block 407. A top block 408 is slidably connected to the inner wall of the connection groove 402. The top block 408 abuts against the fixing block 407. A lead screw 409 is fixedly connected to one side of the top block 408 away from the fixing block 407. A rotating column 410 is threadedly connected to the arc surface of the lead screw 409. The rotating column 410 is rotatably connected to the connection groove 402. The rotating column 410 is rotatably connected to the connection frame 8. A worm gear 411 and a worm 412 are rotatably connected to the inner wall of the auxiliary groove 403. The worm gear 411 meshes with the worm 412. The worm gear 411 is fixedly connected to the rotating column 410. The worm 412 is rotatably connected to the connection frame 8. One end of the worm 412 is fixedly connected to a connection block 414. A plug rod 415 is slidably connected to the inner wall of the connection block 414. The plug rod 415 is slidably connected to the limit hole 413. By setting the adjustment structure 4, when the tightness of the crawler body 1 is relatively loose, the operator can rotate the connection block 414 to move the fixing frame 404 away from the auxiliary groove 403. The fixing frame 404 drives the guide wheel 3 to move away from the auxiliary groove 403. The guide wheel 3 drives the crawler body 1 to move. Thus, it is convenient for the operator to quickly adjust the tightness of the crawler body 1, improving the work efficiency of the operator. A second spring 416 is sleeved on the arc surface of the plug rod 415. The two ends of the second spring 416 are respectively fixedly connected to the connection block 414 and the plug rod 415. The second spring 416 can limit the plug rod 415, preventing the plug rod 415 from sliding out of the inner wall of the limit hole 413 during the movement of the crawler. One end of the plug rod 415 away from the limit hole 413 is fixedly connected to a pull ring 417. The cross-section of the pull ring 417 is circular. The pull ring 417 can facilitate the operator to move the plug rod 415, improving the operation convenience of the operator. The plug rod 415 is a stainless steel rod. The stainless steel rod has good wear resistance and high strength, preventing the plug rod 415 from breaking during short-term use.

[0035] Referring to Figures 6 to 9As shown in the figure, in this embodiment: The auxiliary structure 5 includes a positioning plate 507 and two fixing plates 501. Both the positioning plate 507 and the two fixing plates 501 are fixedly connected to the connecting frame 8. An engagement groove 502 is formed in the inner wall of the fixing plate 501. An adjusting block 504 is slidably connected to the inner wall of the engagement groove 502. A protective cover 505 is fixedly connected to one side of the two adjusting blocks 504 away from the connecting frame 8. A clamping block 506 is fixedly connected to one side of the protective cover 505 close to the positioning plate 507. A moving block 508 is slidably connected to the inner wall of the positioning plate 507. A threaded rod 509 is rotatably connected to the upper surface of the moving block 508. The threaded rod 509 is threadedly connected to the positioning plate 507. One end of the threaded rod 509 away from the moving block 508 is fixedly connected to a connecting column 510. By providing the auxiliary structure 5, after the tension of the crawler body 1 is adjusted by moving the guiding wheel 3, the operator can move the protective cover 505 to slide the clamping block 506 into the inner wall of the positioning plate 507, and then rotate the connecting column 510 to slide the moving block 508 into the inner wall of the clamping block 506, thereby preventing mud and sewage from commonly adhering to the surface of the connecting block 414 during the operation of the excavator, which affects the operator's next adjustment of the crawler. A plurality of anti-slip grooves 511 are formed in the arc surface of the connecting column 510. The plurality of anti-slip grooves 511 are evenly formed in the arc surface of the connecting column 510. The anti-slip grooves 511 can increase the friction between the operator's hand and the connecting column 510, and can prevent the operator from slipping when rotating the connecting column 510. A limiting rod 503 is fixedly connected to the inner wall of the engagement groove 502. The limiting rod 503 is slidably connected to the adjusting block 504. The limiting rod 503 can limit the adjusting block 504 and prevent the adjusting block 504 from being misaligned when sliding in the inner wall of the engagement groove 502.

[0036] Working principle: When the crawler body 1 of the excavator becomes loose, personnel can adjust the crawler body 1 through the crawler adjuster. When the tightness of the crawler body 1 is loose, personnel can first move the pull ring 417 to drive the plug rod 415 to move away from the limit hole 413. The pull ring 417 can facilitate the movement of the plug rod 415 by personnel, improving the operation convenience of personnel. Then, the plug rod 415 drives the second spring 416 to stretch. The second spring 416 can limit the plug rod 415, preventing the plug rod 415 from sliding out of the inner wall of the limit hole 413 during the movement of the crawler. Until the plug rod 415 slides out of the inner wall of the limit hole 413. The plug rod 415 is a stainless steel rod, which has good wear resistance and large strength, preventing the plug rod 415 from breaking during short-term use. Then, personnel rotate the connecting block 414. The connecting block 414 drives the worm 412 to rotate. The worm 412 drives the worm wheel 411 to rotate. The worm wheel 411 drives the rotating column 410 to rotate. The rotating column 410 drives the lead screw 409 to move away from the auxiliary groove 403. The lead screw 409 drives the top block 408 to move away from the auxiliary groove 403. The top block 408 drives the fixed block 407 to move away from the auxiliary groove 403. The fixed block 407 drives the first spring 406 and the telescopic rod 405 to move away from the auxiliary groove 403. The spring drives the fixed frame 404 to move away from the auxiliary groove 403. The fixed frame 404 drives the guide wheel 3 to move away from the auxiliary groove 403. Then, the guide wheel 3 drives the crawler body 1 to move. When the guide wheel 3 is in contact with the crawler body 1, the first spring 406 will be slightly compressed.

[0037] In addition, when the tightness of the crawler body 1 is adjusted by moving the guide wheel 3, personnel can first move the protective cover 505 to make the protective cover 505 move towards the positioning plate 507. The protective cover 505 drives the clamping block 506 and the two adjusting blocks 504 to move towards the positioning plate 507. The adjusting block 504 slides on the arc surface of the limiting rod 503. The limiting rod 503 can limit the adjusting block 504, preventing the adjusting block 504 from being misaligned when sliding on the inner wall of the connecting groove 502. Until the clamping block 506 slides into the inner wall of the positioning plate 507. Then, personnel rotate the connecting column 510. The connecting column 510 drives the threaded rod 509 to rotate. The threaded rod 509 moves towards the clamping block 506. The threaded rod 509 drives the moving block 508 to move towards the clamping block 506. Until the moving block 508 slides into the inner wall of the clamping block 506. The anti-slip groove 511 opened on the arc surface of the connecting column 510 can increase the friction between the personnel's hand and the connecting column 510, preventing personnel from slipping when rotating the connecting column 510.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

Claims

1. An excavator track adjuster, comprising a connecting frame (8), characterized in that: A driving wheel (2) is mounted on the inner wall of the connecting frame (8), a guide wheel (3) is arranged on the inner wall of the connecting frame (8), the arc surface of the driving wheel (2) and the guide wheel (3) are drivingly connected to the track body (1), two drag chain wheels (7) are fixedly connected to the upper surface of the connecting frame (8), a plurality of supporting wheels (6) are fixedly connected to the lower surface of the connecting frame (8), and an adjustment structure (4) is arranged on the inner wall of the connecting frame (8), the adjustment structure (4) comprises a limiting groove (401), a connecting groove (402), an auxiliary groove (403) and a plurality of limiting holes (413), the limiting groove ( The connecting frame (8) comprises a connecting groove (401), a connecting groove (402), an auxiliary groove (403) and a plurality of limiting holes (413), all of which are provided on the connecting frame (8); the connecting groove (402) and the limiting groove (401) are interconnected; the inner wall of the limiting groove (401) is slidably connected to a fixing frame (404); the fixing frame (404) is rotatably connected to the guide wheel (3); a telescopic rod (405) is fixedly connected to one side of the fixing frame (404) close to the connecting groove (402); an end of the telescopic rod (405) away from the fixing frame (404) is fixedly connected to a fixing block (407); the fixing block (407) is connected to the connecting frame (8) and the fixing block (407) is connected to the connecting frame (8) and the fixing block (407) is connected to the connecting frame (8) and the fixing block (407) is connected to the connecting frame (8) and the fixing block (407) is connected to the connecting frame (8) and the fixing frame (404) is connected to the guide wheel (3) and the fixing frame (404 ... guide wheel (3) and the fixing frame (404) is connected to the guide wheel (3) and the fixing frame (404) is connected to the guide wheel (3) and the fixing frame (404) is connected to The connecting groove (402) is slidably connected, a first spring (406) is provided between the fixing block (407) and the fixing frame (404), two ends of the first spring (406) are fixedly connected to the fixing frame (404) and the fixing block (407) respectively, an inner wall of the connecting groove (402) is slidably connected with a top block (408), the top block (408) is in contact with the fixing block (407), a side of the top block (408) away from the fixing block (407) is fixedly connected with a screw rod (409), the arc surface of the screw rod (409) is threadedly connected with a rotating column (410), and the rotating column (410) is connected to the connecting groove (402). The connecting groove (402) is rotatably connected, the rotating column (410) is rotatably connected to the connecting frame (8), the inner wall of the auxiliary groove (403) is rotatably connected with a worm wheel (411) and a worm (412), the worm wheel (411) is meshed with the worm (412), the worm wheel (411) is fixedly connected to the rotating column (410), the worm (412) is rotatably connected to the connecting frame (8), one end of the worm (412) is fixedly connected to a connecting block (414), the inner wall of the connecting block (414) is slidably connected with an insertion rod (415), and the insertion rod (415) is slidably connected to the limiting hole (413).

2. The crawler track adjuster of an excavator according to claim 1, characterized in that: The arc surface of the insertion rod (415) is sleeved with a second spring (416), and the two ends of the second spring (416) are respectively fixedly connected to the connection block (414) and the insertion rod (415).

3. The crawler track adjuster of an excavator according to claim 1, characterized in that: One end of the insertion rod (415) away from the limiting hole (413) is fixedly connected to a pull ring (417), and the cross section of the pull ring (417) is circular.

4. The crawler track adjuster of an excavator according to claim 1, characterized in that: The insertion rod (415) is a stainless steel rod.

5. The crawler track adjuster of an excavator according to claim 1, characterized in that: An auxiliary structure (5) is provided on one side of the connecting frame (8), the auxiliary structure (5) comprising a positioning plate (507) and two fixing plates (501), the positioning plate (507) and the two fixing plates (501) being fixedly connected to the connecting frame (8), a connecting groove (502) being provided on the inner wall of the fixing plate (501), an adjusting block (504) being slidably connected to the inner wall of the connecting groove (502), the two adjusting blocks (504) being fixedly connected on one side away from the connecting frame (8) A protective cover (505) is connected, a clamping block (506) is fixedly connected to one side of the protective cover (505) close to the positioning plate (507), a moving block (508) is slidably connected to the inner wall of the positioning plate (507), a threaded rod (509) is rotatably connected to the upper surface of the moving block (508), the threaded rod (509) is threadedly connected to the positioning plate (507), and a connecting column (510) is fixedly connected to one end of the threaded rod (509) away from the moving block (508).

6. The crawler track adjuster of an excavator according to claim 5, characterized in that: The arc surface of the connecting column (510) is provided with a plurality of anti-slip grooves (511), and the plurality of anti-slip grooves (511) are evenly arranged on the arc surface of the connecting column (510).

7. The crawler track adjuster for an excavator according to claim 5, characterized in that: The inner wall of the connection groove (502) is fixedly connected to a limit rod (503), and the limit rod (503) is slidably connected to the adjustment block (504).

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