Crawler chain anti-falling testing device of crawler excavator

Abstract

The utility model relates to a crawler chain anti-dropping testing device of a crawler excavator. The crawler chain anti-dropping testing device comprises a base, a stand column vertically fixed on the base, and a simulation assembly on the stand column, the simulation assembly comprises a main support detachably fixed to the stand column, a counterweight frame arranged on the right side of the stand column, a suspension fixed to the bottom of the counterweight frame, a rotary damper fixed to the bottom of the main support, a test motor fixed to the bottom of the suspension, and a first crawler chain wheel concentrically fixed to a rotating shaft of the test motor. The second track chain wheel is concentrically fixed on a rotating shaft of the rotating damper, and the vibration generating module is arranged between the main bracket and the counter weight frame; according to the utility model, the actual load and stress conditions of the track chain during walking can be simulated truly so as to improve the accuracy of the test result, and the steps of placing and taking down the track chain are simplified by means of the adjusting assembly so as to facilitate the operation, thereby improving the test efficiency.

Description

Technical Field

[0001] The utility model relates to a crawler chain anti-chain-off testing device for a crawler excavator. Background Art

[0002] An excavator is an earth-moving machine that uses a bucket to dig materials above or below the bearing surface and loads them into transport vehicles or unloads them to a stockpile. A crawler excavator is an excavator that uses crawler tracks to travel. Since the crawler tracks have a large ground contact area, good passability, strong adaptability, and can travel with loads, they are suitable for mines or areas with rough roads. The crawler tracks are flexible chain links driven by the driving wheel, surrounding the driving wheel, road wheels, idler wheels, and support wheels. The breakage and falling off of the crawler chain are the two most common failures of the crawler chain. In order to improve and verify the performance of the crawler chain breakage and falling off, the crawler chain must be tested accordingly.

[0003] The functions and detection items of the existing track chain detachment test equipment are relatively simple, and it is unable to truly simulate the actual load and force conditions of the track chain when walking, which leads to low accuracy of the test results, and thus cannot provide reliable experimental data for improving the performance of the track chain. Moreover, the placement and removal steps of the track chain are relatively cumbersome and inconvenient to operate, which affects the test efficiency and needs further improvement. Utility Model Content

[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a crawler chain anti-decoupling test device for a crawler excavator which can truly simulate the actual load and force conditions of the crawler chain when walking to improve the accuracy of the test results, and also simplifies the placement and removal steps of the crawler chain for easy operation, thereby improving the test efficiency.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a crawler chain anti-chain debonding test device for a crawler excavator, characterized in that it includes a base, a column vertically fixed on the base, and a simulation component on the column;

[0006] The simulation assembly includes a main bracket detachably fixed on the column, a counterweight frame arranged on the right side of the column, a suspension frame fixed on the bottom of the counterweight frame, a rotary damper fixed on the bottom of the main bracket, a test motor fixed on the bottom of the suspension frame, a first crawler sprocket concentrically fixed on the rotating shaft of the test motor, a second crawler sprocket concentrically fixed on the rotating shaft of the rotary damper, and a vibration generating module arranged between the main bracket and the counterweight frame;

[0007] The vibration generating module comprises two linear swing arms symmetrically arranged at the front and rear sides of the main support, a counterweight wheel arranged between the two linear swing arms and located on the left side of the main support, a vibration cylinder arranged parallel to the outside of any one of the linear swing arms, and a transmission unit arranged between the main support and the counterweight frame for transmitting vibration;

[0008] The right ends of the two linear swing rods are rotatably connected to the main bracket, and the left ends of the two linear swing rods are concentrically and rotatably connected to the front and rear sides of the counterweight wheel;

[0009] The fixed end of the vibration cylinder is rotatably connected to the main bracket and is located on the same axis as the right end of a linear rocker on the same side. The vibrating end of the vibration cylinder is rotatably connected to the counterweight wheel and is located on the same axis as the left end of a linear rocker on the same side.

[0010] Preferably, the transmission unit includes a first transmission crank and a transmission block, the transmission block is fixed on the left side of the counterweight frame and located on the right side of the column, the first transmission crank includes two, the two first transmission cranks are symmetrically arranged on the front and rear sides of the main bracket, the right ends of the two first transmission cranks are rotatably connected to the transmission block, and the left ends of the two first transmission cranks are rotatably connected to the main bracket and are respectively located above the right ends of the two linear rocker arms.

[0011] Preferably, the transmission unit also includes a second transmission crank, which includes two second transmission cranks. The two second transmission cranks are symmetrically arranged on the front and rear sides of the main bracket and are respectively located below the two first transmission cranks. The right ends of the two second transmission cranks are rotatably connected to the transmission block and are respectively located below the right ends of the two first transmission cranks, and the left ends of the two second transmission cranks are rotatably connected to the main bracket and are respectively located below the right ends of the two linear rocker arms.

[0012] Preferably, it also includes an adjusting component that cooperates with the first track sprocket and the second track sprocket, the adjusting component includes a first movable frame movably connected to the base to have a left and right translation function, a first adjusting cylinder fixed to the base, a second movable frame movably connected to the first movable frame to have a front and back translation function, and a second adjusting cylinder fixed to the first movable frame, the telescopic end of the first adjusting cylinder is laterally arranged to the right and fixed to the first movable frame, and the telescopic end of the second adjusting cylinder is laterally arranged backward and fixed to the second movable frame.

[0013] Preferably, the adjustment assembly further comprises a sprocket bracket fixed on the second mobile frame and located below the rotary damper, and a track adjustment sprocket rotatably connected to the sprocket bracket and located below the second track sprocket.

[0014] Preferably, the adjusting assembly also includes a first electric cylinder and a second electric cylinder, the fixed end of the first electric cylinder is rotatably connected to the base, the telescopic end of the first electric cylinder is rotatably connected to the first movable frame and parallel to the telescopic end of the first adjusting cylinder, the fixed end of the second electric cylinder is rotatably connected to the first movable frame, the telescopic end of the second electric cylinder is rotatably connected to the second movable frame and parallel to the telescopic end of the second adjusting cylinder.

[0015] Preferably, a stress detection unit is also provided between the main support and the two linear rocker arms, and the stress detection unit includes a crossbeam transversely fixed between the two linear rocker arms and located on the left side of the main support, a bracket fixed on the main support and located above the crossbeam, and a strain block movably connected between the bracket and the crossbeam.

[0016] Preferably, a force transmission column which is vertically arranged and located on the same straight line is fixed to the upper and lower sides of the strain block, the end of the upper force transmission column is inserted in the bracket, and the end of the lower force transmission column is rotatably connected to the beam.

[0017] Preferably, a spring is sleeved on each of the two force transmission columns, the upper spring is arranged between the bracket and the strain block and is always in a compressed state, and the lower spring is arranged between the crossbeam and the strain block and is always in a compressed state.

[0018] Preferably, the end of the upper force transmission column is also sleeved with a nut threadedly connected to the upper part of the bracket to prevent the end of the force transmission column from detaching from the bracket.

[0019] Compared with the prior art, the utility model has the following advantages: the utility model can change the speed of the crawler chain to be tested during operation with the help of a rotary damper, and can also be affected by vibration and displacement during operation, thereby truly simulating the actual load and force conditions of the crawler chain when walking to improve the accuracy of the test results, thereby providing reliable experimental data for improving the performance of the crawler chain, and also simplifies the placement and removal steps of the crawler chain with the help of an adjustment component for easy operation, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the left front side structural diagram of the utility model;

[0021] Figure 2 It is the left rear side structural diagram of the utility model. DETAILED DESCRIPTION

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0024] like Figures 1-2 As shown, a crawler chain anti-chain debonding test device for a crawler excavator comprises a base 1, a column 2 vertically fixed on the base 1, and a simulation component on the column 2;

[0025] The simulation component includes a main bracket 4 detachably fixed on the column 2, a counterweight frame 5 arranged on the right side of the column 2, a suspension frame 6 fixed to the bottom of the counterweight frame 5, a rotary damper 3 fixed to the bottom of the main bracket 4, a test motor 8 fixed to the bottom of the suspension 6, a first crawler sprocket 9 concentrically fixed to the rotating shaft of the test motor 8, a second crawler sprocket 7 concentrically fixed to the rotating shaft of the rotary damper 3, and a vibration generating module arranged between the main bracket 4 and the counterweight frame 5;

[0026] The vibration generating module includes two linear swing rods 11 symmetrically arranged at the front and rear sides of the main support 4, a counterweight wheel 12 arranged between the two linear swing rods 11 and located on the left side of the main support 4, a vibration cylinder 13 arranged parallel to the outside of any linear swing rod 11, and a transmission unit arranged between the main support 4 and the counterweight frame 5 for transmitting vibration;

[0027] The right ends of the two linear swing rods 11 are rotatably connected to the main bracket 4, and the left ends of the two linear swing rods 11 are concentrically and rotatably connected to the front and rear sides of the counterweight wheel 12;

[0028] The fixed end of the vibration cylinder 13 is rotatably connected to the main bracket 4 and is located on the same axis as the right end of a linear swing rod 11 on the same side, and the vibration end of the vibration cylinder 13 is rotatably connected to the counterweight wheel 12 and is located on the same axis as the left end of a linear swing rod 11 on the same side;

[0029] The transmission unit includes a first transmission crank 15 and a transmission block 14. The transmission block 14 is fixed to the left side of the counterweight frame 5 and is located on the right side of the column 2. The first transmission crank 15 includes two. The two first transmission cranks 15 are symmetrically arranged on the front and rear sides of the main bracket 4. The right ends of the two first transmission cranks 15 are rotatably connected to the transmission block 14, and the left ends of the two first transmission cranks 15 are rotatably connected to the main bracket 4 and are respectively located above the right ends of the two linear rocker arms 11.

[0030] The transmission unit also includes a second transmission crank 16, which includes two second transmission cranks 16. The two second transmission cranks 16 are symmetrically arranged on the front and rear sides of the main bracket 4 and are respectively located below the two first transmission cranks 15. The right ends of the two second transmission cranks 16 are rotatably connected to the transmission block 14 and are respectively located below the right ends of the two first transmission cranks 15. The left ends of the two second transmission cranks 16 are rotatably connected to the main bracket 4 and are respectively located below the right ends of the two linear rocker arms 11.

[0031] A crawler chain anti-debonding test device for a crawler excavator also includes an adjustment component that cooperates with a first crawler sprocket 9 and a second crawler sprocket 7, the adjustment component includes a first movable frame 17 movably connected to a base 1 to have a left-right translation function, a first adjusting cylinder 18 fixed to the base 1, a second movable frame 19 movably connected to the first movable frame 17 to have a front-back translation function, and a second adjusting cylinder 22 fixed to the first movable frame 17, the telescopic end of the first adjusting cylinder 18 is laterally arranged to the right and fixed to the first movable frame 17, and the telescopic end of the second adjusting cylinder 22 is laterally arranged to the rear and fixed to the second movable frame 19.

[0032] The adjustment assembly also includes a sprocket bracket 20 fixed on the second mobile frame 19 and located below the rotary damper 3 , and a track adjustment sprocket 21 rotatably connected to the sprocket bracket 20 and located below the second track sprocket 7 .

[0033] The adjusting assembly also includes a first electric cylinder 23 and a second electric cylinder 24. The fixed end of the first electric cylinder 23 is rotatably connected to the base 1, the telescopic end of the first electric cylinder 23 is rotatably connected to the first movable frame 17 and is parallel to the telescopic end of the first adjusting cylinder 18, the fixed end of the second electric cylinder 24 is rotatably connected to the first movable frame 17, and the telescopic end of the second electric cylinder 24 is rotatably connected to the second movable frame 19 and is parallel to the telescopic end of the second adjusting cylinder 22.

[0034] A stress detection unit is also provided between the main support 4 and the two linear rocker arms 11. The stress detection unit includes a crossbeam 29 laterally fixed between the two linear rocker arms 11 and located on the left side of the main support 4, a bracket 28 fixed on the main support 4 and located above the crossbeam 29, and a strain block 25 movably connected between the bracket 28 and the crossbeam 29.

[0035] A force transmission column 26 vertically arranged and located on the same straight line is fixed to the upper and lower sides of the strain block 25. The end of the upper force transmission column 26 is inserted into the bracket 28, and the end of the lower force transmission column 26 is rotatably connected to the crossbeam 29.

[0036] A spring 27 is also sleeved on each of the two force transmission columns 26. The upper spring 27 is arranged between the bracket 28 and the strain block 25 and is always in a compressed state, and the lower spring 27 is arranged between the crossbeam 29 and the strain block 25 and is always in a compressed state.

[0037] The end of the upper force transmission column 26 is also sleeved with a nut 30 threadedly connected to the bracket 28 to prevent the end of the force transmission column 26 from being separated from the bracket 28.

[0038] A vertically arranged limiting column 31 is also fixed to the bottom of the suspension 6 .

[0039] Working principle:

[0040] The telescopic end of the first adjusting cylinder 18 in the driving adjustment assembly extends outward to drive the second moving frame 19 and the second adjusting cylinder 22 to move to the right with the help of the first moving frame 17, and then the track adjusting sprocket 21 is driven to move synchronously with the help of the sprocket bracket 20, so that the outer circumference of the area surrounded by the first track sprocket 9, the second track sprocket 7 and the track adjusting sprocket 21 is shortened to be smaller than the inner circumference of the track chain to be tested, and then the track chain to be tested can be easily and conveniently mounted outside the first track sprocket 9, the second track sprocket 7 and the track adjusting sprocket 21, and then the telescopic end of the first adjusting cylinder 18 is driven to retract inwardly to drive the track adjusting sprocket 21 to move to the left in the same way, so that the outer circumference of the area surrounded by the first track sprocket 9, the second track sprocket 7 and the track adjusting sprocket 21 is gradually increased, and then the track chain to be tested is slowly tightened to reach a predetermined tightness.

[0041] After that, the test motor 8 in the simulation component is started to rotate its rotating shaft, and then the track chain to be tested is driven to operate with the help of the first track sprocket 9, the second track sprocket 7 and the track adjustment sprocket 21, and the second track sprocket 7 will receive the damping generated by the rotating shaft of the rotary damper 3 during the rotation process, so as to control the running speed of the track chain to be tested within a certain range (prior art); after that, the telescopic end of the vibration cylinder 13 in the vibration generating module is started to frequently telescope to drive the counterweight wheel 12 to vibrate frequently, and then with the help of The two linear rocker arms 11 drive the main bracket 4 to vibrate frequently, thereby driving the transmission block 14 to vibrate frequently with the help of the two first transmission cranks 15 and the two second transmission cranks 16 in the transmission unit, and then driving the test motor 8 to vibrate frequently with the help of the counterweight frame 5 and the suspension 6, thereby driving the track chain to vibrate frequently during operation, and then the operating status of the track chain can be observed frequently to test whether it will be decoupled. During the test, the vibration amplitude and frequency of the telescopic end of the vibration cylinder 13 can also be adjusted to detect the limit data of the track chain being decoupled.

[0042] In addition, during the test, the telescopic end of the second adjusting cylinder 22 can be driven to extend outward or retract inward to drive the second movable frame 19 to move backward or forward, and then the track adjusting sprocket 21 can be driven to move synchronously with the help of the sprocket bracket 20, thereby changing the relative position between the track adjusting sprocket 21 and the track chain, so as to detect whether the track chain will be decoupled after the track adjusting sprocket 21 is shifted.

[0043] After the detection is completed, the test motor 8 and the vibration cylinder 13 are turned off, and then the telescopic end of the first adjusting cylinder 18 is driven to extend outward to drive the track adjusting sprocket 21 to move synchronously in the same way, thereby shortening the outer circumference of the area surrounded by the first track sprocket 9, the second track sprocket 7 and the track adjusting sprocket 21 to be smaller than the inner circumference of the track chain to be tested, and then the tested track chain can be easily and conveniently removed.

[0044] When driving the telescopic end of the first adjusting cylinder 18, it is also necessary to drive the telescopic end of the first electric cylinder 23 to extend synchronously to the same position. When the first adjusting cylinder 18 fails, the telescopic end of the first electric cylinder 23 remains stationary, thereby preventing the first movable frame 17 from shifting due to an accident, thereby ensuring that the test continues; similarly, the role played by the second electric cylinder 24 is the same as that of the first electric cylinder 23, and the purpose is to prevent the second movable frame 19 from shifting due to a failure of the second adjusting cylinder 22; elastically connecting the end of the limit column 31 to the base can effectively prevent the vibration amplitude of the counterweight frame 5 and the suspension 6 from being too large; when the vibration amplitude and frequency of the vibration cylinder 13 change, the strain block 25 can detect the changes in the external force received during the vibration process in real time, thereby being able to accurately quantify the vibration intensity to ensure the accuracy of the test.

[0045] The utility model can change the speed of the crawler chain to be tested during operation with the help of the rotary damper 3, and can also be affected by vibration and displacement during operation, so as to truly simulate the actual load and force conditions of the crawler chain when walking to improve the accuracy of the test results, thereby providing reliable experimental data for improving the performance of the crawler chain, and also simplifies the placement and removal steps of the crawler chain with the help of the adjustment component for easy operation, thereby improving the test efficiency.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A crawler chain anti-chain debonding test device for a crawler excavator, characterized in that: It includes a base, a column vertically fixed on the base, and a simulation component on the column; The simulation assembly includes a main bracket detachably fixed on the column, a counterweight frame arranged on the right side of the column, a suspension frame fixed on the bottom of the counterweight frame, a rotary damper fixed on the bottom of the main bracket, a test motor fixed on the bottom of the suspension frame, a first crawler sprocket concentrically fixed on the rotating shaft of the test motor, a second crawler sprocket concentrically fixed on the rotating shaft of the rotary damper, and a vibration generating module arranged between the main bracket and the counterweight frame; The vibration generating module comprises two linear swing arms symmetrically arranged at the front and rear sides of the main support, a counterweight wheel arranged between the two linear swing arms and located on the left side of the main support, a vibration cylinder arranged parallel to the outside of any one of the linear swing arms, and a transmission unit arranged between the main support and the counterweight frame for transmitting vibration; The right ends of the two linear swing rods are rotatably connected to the main bracket, and the left ends of the two linear swing rods are concentrically and rotatably connected to the front and rear sides of the counterweight wheel; The fixed end of the vibration cylinder is rotatably connected to the main bracket and is located on the same axis as the right end of a linear rocker on the same side. The vibrating end of the vibration cylinder is rotatably connected to the counterweight wheel and is located on the same axis as the left end of a linear rocker on the same side.

2. The crawler chain anti-debonding testing device of a crawler excavator according to claim 1, characterized in that: The transmission unit includes a first transmission crank and a transmission block. The transmission block is fixed on the left side of the counterweight frame and located on the right side of the column. The first transmission cranks include two. The two first transmission cranks are symmetrically arranged on the front and rear sides of the main bracket, and the right ends of the two first transmission cranks are rotatably connected to the transmission block. The left ends of the two first transmission cranks are rotatably connected to the main bracket and are respectively located above the right ends of the two linear rocker arms.

3. The crawler chain anti-debonding testing device of a crawler excavator according to claim 2, characterized in that: The transmission unit also includes a second transmission crank, which includes two second transmission cranks. The two second transmission cranks are symmetrically arranged on the front and rear sides of the main bracket and are respectively located below the two first transmission cranks. The right ends of the two second transmission cranks are rotatably connected to the transmission block and are respectively located below the right ends of the two first transmission cranks. The left ends of the two second transmission cranks are rotatably connected to the main bracket and are respectively located below the right ends of the two linear rocker arms.

4. The crawler chain anti-debonding testing device of a crawler excavator according to claim 1, characterized in that: The first and second crawler sprockets are also provided with an adjusting assembly which cooperates with each other, and the adjusting assembly includes a first movable frame which is movably connected to a base so as to have a left-right translation function, a first adjusting cylinder which is fixed to the base, a second movable frame which is movably connected to the first movable frame so as to have a front-back translation function, and a second adjusting cylinder which is fixed to the first movable frame, wherein the telescopic end of the first adjusting cylinder is laterally arranged to the right and fixed to the first movable frame, and the telescopic end of the second adjusting cylinder is laterally arranged to the rear and fixed to the second movable frame.

5. The crawler chain anti-debonding testing device of a crawler excavator according to claim 4, characterized in that: The adjusting assembly also includes a sprocket bracket fixed on the second moving frame and located below the rotary damper, and a track adjusting sprocket rotatably connected to the sprocket bracket and located below the second track sprocket.

6. The crawler chain anti-debonding testing device of a crawler excavator according to claim 5, characterized in that: The adjusting assembly also includes a first electric cylinder and a second electric cylinder, the fixed end of the first electric cylinder is rotatably connected to the base, the telescopic end of the first electric cylinder is rotatably connected to the first movable frame and parallel to the telescopic end of the first adjusting cylinder, the fixed end of the second electric cylinder is rotatably connected to the first movable frame, and the telescopic end of the second electric cylinder is rotatably connected to the second movable frame and parallel to the telescopic end of the second adjusting cylinder.

7. The crawler chain anti-debonding testing device of a crawler excavator according to claim 1, characterized in that: A stress detection unit is also provided between the main support and the two linear rockers. The stress detection unit includes a crossbeam transversely fixed between the two linear rockers and located on the left side of the main support, a bracket fixed on the main support and located above the crossbeam, and a strain block movably connected between the bracket and the crossbeam.

8. The crawler chain anti-debonding testing device of a crawler excavator according to claim 7, characterized in that: A force transmission column which is vertically arranged and located on the same straight line is fixed to the upper and lower sides of the strain block. The end of the upper force transmission column is inserted in the bracket, and the end of the lower force transmission column is rotatably connected to the crossbeam.

9. The crawler chain anti-debonding testing device of a crawler excavator according to claim 8, characterized in that: A spring is sleeved on each of the two force transmission columns. The upper spring is arranged between the bracket and the strain block and is always in a compressed state, and the lower spring is arranged between the crossbeam and the strain block and is always in a compressed state.

10. The crawler chain anti-debonding testing device of a crawler excavator according to claim 9, characterized in that: The end of the upper force transmission column is also sleeved with a nut threadedly connected to the upper part of the bracket to prevent the end of the force transmission column from being separated from the bracket.

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