A dump truck top cylinder test bench that is easy to fix

Abstract

The present application relates to a dump truck center cylinder test bench that is easy to fix, and relates to the technical field of the test bench, which includes a test bench body, a clamping mechanism, and an adjusting mechanism, wherein the clamping mechanism and the adjusting mechanism are both arranged on the test bench body; the clamping mechanism includes a movable frame arranged on the top of the test bench body, the top of the test bench body is fixedly connected to a fixed frame, the tops of the movable frame and the fixed frame are both fixedly connected to a connecting frame, the inner sides of the two connecting frames are both movably connected to movable rods, the outer sides of the two movable rods are both fixedly connected to manual turning handles, the outer sides of the two movable rods are both fixedly connected to two first bevel gears, and the outer sides of the first bevel gears are meshed with second bevel gears. The present application has the purpose of achieving the centering and top cylinder fixation of the test bench, avoiding the shaking or offset of the test bench during the centering and top cylinder detection, and ensuring the effect of the centering and top cylinder detection of the test bench.

Description

Technical Field

[0001] The present application relates to the technical field of test benches, and in particular to a top cylinder test bench for dump trucks which is easy to fix. Background Art

[0002] The dump truck center cylinder is a device used for the front straight lifting mechanism of the dump truck. The dump truck center cylinder test bench consists of a pressurizing system, a control system and a display system. The pressurizing system is mainly composed of a liquid booster pump, etc., which mainly completes the pressurization and pressure maintenance of the system, and can ensure the pressurization and pressure maintenance of long-term tests.

[0003] During the production and processing of the top cylinder in the dump truck, a test bench is usually required to measure the bursting pressure and pressure resistance time of the dump truck cylinder. For example, the Chinese patent with publication number CN215492886U in the relevant technology proposes a test bench for shelling cylinder pressure testing, which has the function of detecting two different pressures of the shelling cylinder through a digital display press and a digital display pressure gauge. It is very suitable for the existing shelling cylinder application, and the operation is relatively simple and the applicability is strong, and it can complete the advantages of rapid detection and testing of two types of pressures of the shelling cylinder.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: in order to ensure the quality of cylinder body production, it is usually necessary to test the pressure of the cylinder body, but the test bench of this design has the disadvantage of being inconvenient to fix, which causes the test bench to easily shake or shift during the detection of the centering cylinder, making the centering cylinder easily damaged by impact, thereby affecting the effect of the test bench on the detection of the centering cylinder. It is inconvenient to use and cannot meet the actual use needs, reducing the use efficiency and effect of the test bench. Utility Model Content

[0005] In order to solve the problem that the test bench is difficult to fix, the test bench is prone to shaking or shifting during the detection of the center top cylinder, which makes the center top cylinder easily damaged by impact, thereby affecting the detection effect of the center top cylinder test bench on the center top cylinder, the present application provides a dump truck center top cylinder test bench that is easy to fix.

[0006] The present application provides a dump truck top cylinder test bench that is easy to fix and adopts the following technical solution:

[0007] A dump truck mid-cylinder test bench that is easy to fix, comprising a test bench body, a clamping mechanism and an adjusting mechanism, wherein the clamping mechanism and the adjusting mechanism are both arranged on the test bench body;

[0008] The clamping mechanism comprises a movable frame arranged on the top of the test bench body, a fixed frame is arranged on the top of the test bench body, a connecting frame is arranged on the top of the movable frame and the fixed frame, the inner sides of the two connecting frames are movably connected with movable rods, the outer sides of the two movable rods are arranged with manual turning handles, the outer sides of the two movable rods are arranged with two first bevel gears, the outer sides of the first bevel gears are meshed with second bevel gears, the inner sides of the second bevel gears are arranged with threaded rods, the outer sides of the threaded rods are threadedly connected with threaded blocks, the outer sides of the threaded blocks are arranged with limiting blocks, the outer sides of the limit blocks are arranged with movable top frame, the top of the movable top frame is arranged with fixed screw blocks, the inner sides of the fixed screw blocks are threadedly connected with movable screw rods, the outer sides of the movable screw rods are arranged with movable turning handles, the outer sides of the movable screw rods are arranged with support bearings, the outer sides of the support bearings are arranged with movable clamping blocks, the tops of the two connecting frames are arranged with fixed clamping blocks, and the tops of the fixed clamping blocks are movably connected with middle top oil cylinders.

[0009] By adopting the above technical solution, the clamping mechanism can clamp and fix the middle top cylinder that needs to be inspected and processed to avoid shaking or falling off of the middle top cylinder during the inspection and processing, so as to ensure the inspection and processing effect of the middle top cylinder by the staff.

[0010] The technicians only need to place the middle top cylinder to be tested on top of the two fixed clamps, and then rotate the four movable handles to drive the four movable screws to rotate respectively, thereby driving the four support bearings and the four movable clamps to move up and down respectively. During the up and down movement of the four movable clamps, the two fixed clamps can be used to clamp and fix the middle top cylinder to avoid shaking or deviation of the middle top cylinder during the detection process, thereby ensuring the effect of the middle top cylinder detection.

[0011] Optionally, the adjustment mechanism includes a motor box fixed to the outside of the test bench body, an electric motor is arranged on the inside of the motor box, a movable screw rod is arranged on the output shaft of the motor, a movable screw block is threadedly connected to the outside of the movable screw rod, a movable block is arranged on the outside of the movable screw block, and the movable block is fixedly connected to the movable frame.

[0012] By adopting the above technical scheme, the adjusting mechanism can adjust the position of the clamping mechanism, and the clamping mechanism can be adjusted according to the model and length of the middle top oil cylinder, so that the clamping mechanism can clamp and fix the middle top oil cylinders of different models and lengths. The movable screw rod is driven to rotate by the motor, which will in turn drive the movable screw block, movable block, movable frame, right connecting frame, movable rod, right manual turning handle, right first bevel gear, right second bevel gear, right threaded rod, right threaded block, right limiting block, right movable top frame, right fixed screw block, right movable screw, right movable turning handle, right support bearing, right movable clamping block and right fixed clamping block to move left and right, and the distance between the two fixed clamping blocks can be adjusted according to the model and size of the middle top oil cylinder, so as to clamp and fix the middle top oil cylinders of different models and sizes.

[0013] Optionally, the number of the connecting frame, movable rod, manual turning handle, movable top frame and fixed clamp block is two each, the number of the first bevel gear, the second bevel gear, the threaded rod, the threaded block, the limit block, the fixed screw block, the movable screw rod, the movable turning handle, the support bearing and the movable clamp block is four each, and the four movable clamp blocks and the two fixed clamp blocks are all movably connected to the middle top cylinder.

[0014] By adopting the above technical solution, the middle top cylinder to be processed can be supported by two fixed clamps, so that the stability and firmness of the middle top cylinder processing can be guaranteed by moving four movable clamps up and down in conjunction with the two fixed clamps, thereby ensuring the effect of the middle top cylinder detection.

[0015] Optionally, a movable slider is provided on the inner side of the movable frame, a fixed long groove is opened on the inner side of the test bench body, the number of the movable slider and the number of the fixed long groove are both two, and the two movable sliders are slidably connected to the two fixed long grooves respectively.

[0016] By adopting the above technical solution, the stability of the left and right movement of the movable frame, the right connecting frame, the right fixed clamping block and the right movable clamping block can be ensured through two movable sliders and two fixed long grooves. At the same time, the U-shaped movable frame, two movable sliders and two fixed long grooves can limit the movable frame and the right connecting frame to avoid the movable frame and the right connecting frame from offsetting during the movement.

[0017] Optionally, a fixed square hole is provided on the top of the test bench body, the movable square block is slidably connected to the fixed square hole, the width of the movable square block is equal to the width of the fixed square hole, and a screw hole matching the outer thread of the movable screw rod is provided on the inner side of the movable screw block.

[0018] By adopting the above technical scheme, the movable screw block can be restricted from circular rotation by the movable square block and the fixed square hole. Because in life, the rotation of the bolt usually drives the nut to rotate and move left and right, the movable square block and the fixed square hole can only allow the movable screw block to move left and right, so that the movable screw block can drive the movable frame to move left and right. A screw hole that is compatible with the outer thread of the movable screw rod is arranged on the inner side of the movable screw block, so that the movable screw rod can drive the movable screw block to move left and right during rotation.

[0019] Optionally, a spiral hole matching the outer thread of the movable screw is opened on the inner side of the fixed screw block, and the end of the movable screw away from the movable turning handle sequentially penetrates the fixed screw block, the movable top frame and the support bearing and extends to the inner side of the support bearing, and a rolling block is provided at the end of the movable rod away from the manual turning handle, and the connecting frame is rotatably connected to the rolling block, and the end of the movable rod away from the manual turning handle sequentially penetrates the connecting frame and the first bevel gear and extends to the outside of the rolling block.

[0020] By adopting the above technical scheme, the rolling block can improve the stability of the rotation of the movable rod, and at the same time, the movable rod can be supported and limited to avoid the two movable rods from offsetting during the rotation. The supporting bearing can support and limit the movable screw, and the movable clamp can be restricted from circular rotation. At the same time, the stability of the rotation of the movable screw can be improved to avoid the movable screw from offsetting during the rotation.

[0021] Optionally, a rolling bearing is provided on the outer side of the threaded rod, the connecting frame is fixedly connected to the rolling bearing, and the top end of the threaded rod sequentially passes through the second bevel gear, the connecting frame, the threaded block and the rolling bearing and extends to the inner side of the rolling bearing.

[0022] By adopting the above technical solution, the rotation stability of the threaded rod can be improved by the rolling bearing, and the threaded rod can be supported and limited at the same time, so as to avoid the threaded rod from deviating during the rotation process.

[0023] Optionally, the inner sides of the two connecting frames are provided with limiting square holes, and the number of the limiting square holes is four, the four limiting blocks are respectively slidably connected to the four limiting square holes, the width of the limiting blocks is equal to the width of the limiting square holes, a deep groove ball bearing is arranged on the outer side of the movable screw rod, the test bench body is fixedly connected to the deep groove ball bearing, and the right end of the movable screw rod passes through the motor box, the test bench body, the movable screw block and the deep groove ball bearing in sequence and extends to the inner side of the deep groove ball bearing.

[0024] By adopting the above technical scheme, the deep groove ball bearing can improve the rotation stability of the movable screw rod, and at the same time, the movable screw rod can be supported and limited to avoid the movable screw rod from shifting during the rotation process. The four limiting square blocks and four limiting square holes can limit the four threaded blocks from rotating in a circle to avoid the four threaded blocks driving the two movable top frames to move up and down and cause shaking or shifting.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The movable screw rod is driven to rotate by the motor, which in turn drives the movable screw block, movable block, movable frame, right connecting frame, movable rod, right manual handle, right first bevel gear, right second bevel gear, right threaded rod, right threaded block, right limit block, right movable top frame, right fixed screw block, right movable screw rod, right movable handle, right support bearing, right movable clamp block and right fixed clamp block to move left and right. The distance between the two fixed clamp blocks can be adjusted according to the size of the middle top cylinder, which is convenient for clamping and fixing middle top cylinders of different models and sizes, and ensures the stability of the clamping of the middle top cylinder.

[0027] 2. Through the above principle, after the distance between the two fixed clamps is adjusted, the middle top cylinder to be tested is placed above the two fixed clamps, and then the four movable handles are rotated respectively to drive the four movable screws to rotate respectively, thereby driving the four support bearings and the four movable clamps to move up and down respectively. During the up and down movement of the four movable clamps, the two fixed clamps can be used to clamp and fix the middle top cylinder to avoid shaking or shifting of the middle top cylinder during the detection process, thereby ensuring the effect of the middle top cylinder detection. The overall structure is simple and easy to use, which realizes the purpose of fixing the test bench to the middle top cylinder, avoids shaking or shifting of the test bench during the detection of the middle top cylinder, prevents the middle top cylinder from being damaged by impact during the detection, and ensures the effect of the test bench to detect the middle top cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 Left view of the test bench body connection structure in the embodiment of the present application;

[0030] Figure 3 Right view of the test bench body connection structure in the embodiment of the present application;

[0031] Figure 4 A top view of the connection structure of the test bench body in the embodiment of the present application;

[0032] Figure 5Front view of the test bench body connection structure in the embodiment of the present application;

[0033] Figure 6 Embodiments of the present application Figure 2 Enlarged view of point A in the middle.

[0034] Figure numerals: 1. test bench body; 2. movable frame; 3. fixed frame; 4. connecting frame; 5. movable rod; 6. manual turning handle; 7. first bevel gear; 8. second bevel gear; 9. threaded rod; 10. threaded block; 11. limiting block; 12. movable top frame; 13. fixed screw block; 14. movable screw rod; 15. movable turning handle; 16. supporting bearing; 17. movable clamping block; 18. fixed clamping block; 19. middle top cylinder; 20. motor box; 21. motor; 22. movable screw rod; 23. movable screw block; 24. movable block. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] The present application embodiment discloses a dump truck top cylinder test bench which is easy to fix. Figure 1 and Figure 2 , including a test bench body 1, a clamping mechanism and an adjusting mechanism, both of which are arranged on the test bench body 1, the clamping mechanism includes a movable frame 2 arranged on the top of the test bench body 1, the top of the test bench body 1 is fixedly connected with a fixed frame 3, the tops of the movable frame 2 and the fixed frame 3 are fixedly connected with a connecting frame 4, the inner sides of the two connecting frames 4 are movably connected with movable rods 5, the outer sides of the two movable rods 5 are fixedly connected with manual turning handles 6, the outer sides of the two movable rods 5 are fixedly connected with two first bevel gears 7, the outer side of the first bevel gear 7 is meshed with a second bevel gear 8, and the inner side of the second bevel gear 8 is fixedly connected with a threaded rod 9 The outer side of the threaded rod 9 is threadedly connected with a threaded block 10, the outer side of the threaded block 10 is fixedly connected with a limiting block 11, the outer side of the limiting block 11 is fixedly connected with a movable top frame 12, the top of the movable top frame 12 is fixedly connected with a fixed screw block 13, the inner side of the fixed screw block 13 is threadedly connected with a movable screw rod 14, the outer side of the movable screw rod 14 is fixedly connected with a movable handle 15, the outer side of the movable screw rod 14 is fixedly connected with a support bearing 16, the outer side of the support bearing 16 is fixedly connected with a movable clamping block 17, the tops of the two connecting frames 4 are fixedly connected with fixed clamping blocks 18, and the top of the fixed clamping block 18 is movably connected with a middle top oil cylinder 19.

[0037] The adjusting mechanism includes a motor box 20 fixed to the outside of the test bench body 1, a motor 21 is fixedly connected to the inside of the motor box 20, a movable screw rod 22 is fixedly connected to the output shaft of the motor 21, a movable screw block 23 is threadedly connected to the outside of the movable screw rod 22, a movable square 24 is fixedly connected to the outside of the movable screw block 23, the movable square 24 is fixedly connected to the movable frame 2, the connecting frame 4, the movable rod 5, the manual handle 6, the movable top frame 12 and the fixed clamping block 18 are all two in number, the first bevel gear 7, the second bevel gear 8, the threaded rod 9, the threaded block 10, the limiting block 11, the fixed screw block 13, the movable screw rod 14, the movable handle 15, the support bearing 16 and the movable clamping block 17 are all four in number, and the four movable clamping blocks 17 and the two fixed clamping blocks 18 are all movably connected to the middle top cylinder 19.

[0038] A movable slider is fixedly connected to the inner side of the movable frame 2, and a fixed long groove is provided on the inner side of the test bench body 1. There are two movable sliders and two fixed long grooves, and the two movable sliders are slidably connected to the two fixed long grooves respectively. The two movable sliders and the two fixed long grooves are both T-shaped, and the movable frame 2 and the fixed frame 3 are both U-shaped. The test bench body 1 is movably connected to the movable frame 2, and a fixed square hole is provided on the top of the test bench body 1. The movable square block 24 is slidably connected to the fixed square hole, and the width of the movable square block 24 is equal to the width of the fixed square hole. A screw hole matching the outer thread of the movable screw rod 22 is provided on the inner side of the movable screw block 23.

[0039] The two connecting frames 4 are both U-shaped, and limiting square holes are provided on the inner sides of the two connecting frames 4, and the number of the limiting square holes is four. The four limiting blocks 11 are respectively slidably connected to the four limiting square holes, and the width of the limiting blocks 11 is equal to the width of the limiting square holes. The two movable top frames 12 are respectively movably connected to the two connecting frames 4, and a spiral hole matching the outer thread of the movable screw 14 is provided on the inner side of the fixed screw block 13. The end of the movable screw 14 away from the movable handle 15 passes through the fixed screw block 13, the movable top frame 12 and the support bearing 16 in sequence and extends to the inner side of the support bearing 16.

[0040] The supporting bearing 16 is composed of four parts: an inner ring, an outer ring, rolling elements and a retaining frame. The inner ring cooperates with the movable screw 14 and rotates with the movable screw 14. The outer ring cooperates with the movable clamping block 17 to play a supporting role. The rolling elements are evenly distributed between the inner ring and the outer ring with the help of the retaining frame. The retaining frame can evenly distribute the rolling elements, guide the rolling elements to rotate and play a lubricating role. The inner ring is fixedly connected to the movable screw 14, the outer ring is fixedly connected to the movable clamping block 17, the inner ring and the outer ring are both movably connected to the rolling elements and the retaining frame, and the rolling elements are movably connected to the retaining frame.

[0041] A rolling bearing is fixedly connected to the outer side of the threaded rod 9, and the connecting frame 4 is fixedly connected to the rolling bearing. The top of the threaded rod 9 passes through the second bevel gear 8, the connecting frame 4, the threaded block 10 and the rolling bearing in sequence and extends to the inner side of the rolling bearing. The rolling bearing is composed of four parts: an inner ring, an outer ring, a circular moving body and a separator. The function of the inner ring is to cooperate with the threaded rod 9 and rotate with the threaded rod 9. The function of the outer ring is to cooperate with the connecting frame 4 and play a supporting role. The circular moving body is evenly distributed between the inner ring and the outer ring with the help of the separator. The separator can evenly distribute the circular moving body, guide the rotation of the circular moving body and play a lubricating role. The inner ring is fixedly connected to the threaded rod 9, and the outer ring is fixedly connected to the connecting frame 4. The inner ring and the outer ring are movably connected to the circular moving body and the separator, and the circular moving body is movably connected to the separator.

[0042] The end of the movable rod 5 away from the manual turning handle 6 is fixedly connected to a rolling block, the connecting frame 4 is rotatably connected to the rolling block, the end of the movable rod 5 away from the manual turning handle 6 passes through the connecting frame 4 and the first bevel gear 7 in sequence and extends to the outside of the rolling block, the outside of the movable screw rod 22 is fixedly connected to a deep groove ball bearing, the test bench body 1 is fixedly connected to the deep groove ball bearing, the right end of the movable screw rod 22 passes through the motor box 20, the test bench body 1, the movable screw block 23 and the deep groove ball bearing in sequence and extends to the inside of the deep groove ball bearing.

[0043] The deep groove ball bearing is composed of four parts: a small circle, a large circle, balls and a ball distribution rack. The function of the small circle is to cooperate with the movable screw rod 22 and rotate together with the movable screw rod 22. The function of the large circle is to cooperate with the test bench body 1 and play a supporting role. The balls are evenly distributed between the small circle and the large circle with the help of the ball distribution rack. The ball distribution rack can evenly distribute the balls, guide the balls to rotate and play a lubricating role. The small circle is fixedly connected to the movable screw rod 22, the large circle is fixedly connected to the test bench body 1, the small circle and the large circle are movably connected to the balls and the ball distribution rack, and the balls are movably connected to the ball distribution rack.

[0044] In addition, by setting the test bench body 1, the movable frame 2 and the fixed frame 3 can be supported, and by setting the movable frame 2 and the fixed frame 3, the two connecting frames 4 can be supported respectively, and by setting the connecting frame 4, the movable rod 5, the first bevel gear 7, the second bevel gear 8 and the threaded rod 9 can be hidden, and by setting the movable rod 5, the manual turning handle 6 and the first bevel gear 7 can be supported, and by setting the manual turning handle 6, the movable rod 5 can be manually rotated, and by setting the threaded rod 9 and the threaded block 10, the limiting block 11 can be supported, and by setting the limiting block 11 and the limiting square groove, the threaded block 10 can be restricted from circular rotation.

[0045] By setting up a movable top frame 12, the fixed screw block 13 can be supported. By setting up the fixed screw block 13 and the movable screw rod 14, the movable handle 15 and the support bearing 16 can be supported. By setting up the support bearing 16, the movable clamping block 17 can be restricted from rotating in a circle, and the rotation stability of the movable screw rod 14 can be improved. By setting up a movable handle 15, the movable screw rod 14 can be rotated. By setting up two fixed clamping blocks 18 and four movable clamping blocks 17, the firmness of the clamping of the middle top oil cylinder 19 can be guaranteed. By setting up a motor box 20, the motor 21 can be protected to prevent the motor 21 from being damaged by the impact of external force. By setting up the motor 21, the movable screw rod 22 can be driven to rotate. By setting up the movable screw rod 22 and the movable screw block 23, the movable block 24 can be supported.

[0046] By setting the movable square block 24 and the fixed square hole, the movable wire block 23 can be restricted from circular rotation. By setting the rolling block, the stability of the rotation of the movable rod 5 can be improved. By setting the deep groove ball bearing, the stability of the rotation of the movable screw rod 22 can be improved. By setting the rolling bearing, the stability of the rotation of the threaded rod 9 can be improved. By setting two movable sliders and two fixed long grooves, the stability of the left and right movement of the movable frame 2, the right connecting frame 4, the right fixed clamping block 18 and the right movable clamping block 17 can be guaranteed. At the same time, the U-shaped movable frame 2, the two movable sliders and the two fixed long grooves can limit the movable frame 2 and the right connecting frame 4 to avoid the movable frame 2 and the right connecting frame 4 from offsetting during the movement.

[0047] The implementation principle of the cylinder top test bench in the dump truck which is easy to fix in the embodiment of the present application is as follows:

[0048] When it is necessary to detect the middle top oil cylinder 19, the movable screw rod 22 is first driven to rotate by the motor 21. Because the movable screw rod 22 is threadedly connected with the movable screw block 23, the movable screw block 23, the movable block 24, the movable frame 2, the right connecting frame 4, the movable rod 5, the right manual turning handle 6, the right first bevel gear 7, the right second bevel gear 8, the right threaded rod 9, the right threaded block 10, the right limiting block 11, the right movable top frame 12, the right fixed screw block 13, the right movable screw rod 14, the right movable turning handle 15, the right supporting bearing 16, the right movable clamping block 17 and the right fixed clamping block 18 can be moved left and right. The distance between the two fixed clamping blocks 18 can be adjusted according to the size of the middle top oil cylinder 19, so as to clamp and fix the middle top oil cylinders 19 of different sizes and ensure the stability of the clamping of the middle top oil cylinder 19.

[0049] After the distance between the two fixed clamping blocks 18 is adjusted, the middle top cylinder 19 to be tested is placed above the two fixed clamping blocks 18, and then the four movable handles 15 are rotated respectively to drive the four movable screws 14 to rotate respectively. Because the four fixed screw blocks 13 are respectively threadedly connected to the four movable screws 14, the four movable screws 14 will respectively drive the four support bearings 16 and the four movable clamping blocks 17 to move up and down during the rotation of the four movable clamping blocks 17. During the up and down movement of the four movable clamping blocks 17, the middle top cylinder 19 can be clamped and fixed in cooperation with the two fixed clamping blocks 18 to avoid shaking or deviation of the middle top cylinder 19 during the detection process, thereby ensuring the detection effect of the middle top cylinder 19.

[0050] Compared with the existing technology, the overall structure is simple and easy to use, and the purpose of fixing the centering top cylinder of the test bench is achieved, which avoids the test bench from shaking or shifting during the detection of the centering top cylinder, and prevents the centering top cylinder from being damaged by impact during the detection. It ensures the effect of the test bench on the centering top cylinder detection, meets the actual use needs, and improves the use efficiency and effect of the dump truck centering top cylinder test bench.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dump truck top cylinder test bench that is easy to fix, characterized by: It comprises a test bench body (1), a clamping mechanism and an adjusting mechanism, wherein the clamping mechanism and the adjusting mechanism are both arranged on the test bench body (1); The clamping mechanism comprises a movable frame (2) arranged on the top of the test bench body (1), a fixed frame (3) being arranged on the top of the test bench body (1), a connecting frame (4) being arranged on the top of the movable frame (2) and the fixed frame (3), a movable rod (5) being movably connected to the inner side of the two connecting frames (4), a manual turning handle (6) being arranged on the outer side of the two movable rods (5), two first bevel gears (7) being arranged on the outer side of the two movable rods (5), a second bevel gear (8) being meshed with the outer side of the first bevel gear (7), a threaded rod (9) being arranged on the inner side of the second bevel gear (8), and a threaded block (10) being threadedly connected to the outer side of the threaded rod (9). ), a limiting block (11) is arranged on the outer side of the threaded block (10), a movable top frame (12) is arranged on the outer side of the limiting block (11), a fixed screw block (13) is arranged on the top of the movable top frame (12), a movable screw rod (14) is threadedly connected to the inner side of the fixed screw block (13), a movable handle (15) is arranged on the outer side of the movable screw rod (14), a support bearing (16) is arranged on the outer side of the movable screw rod (14), a movable clamping block (17) is arranged on the outer side of the support bearing (16), and a fixed clamping block (18) is arranged on the top of each of the two connecting frames (4), and a middle top oil cylinder (19) is movably connected to the top of the fixed clamping block (18).

2. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 1, characterized in that: The adjustment mechanism comprises a motor box (20) fixed on the outside of the test bench body (1); a motor (21) is arranged on the inside of the motor box (20); a movable screw rod (22) is arranged on the output shaft of the motor (21); a movable screw block (23) is threadedly connected to the outside of the movable screw rod (22); a movable block (24) is arranged on the outside of the movable screw block (23); and the movable block (24) is fixedly connected to the movable frame (2).

3. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 1, characterized in that: The number of the connecting frame (4), the movable rod (5), the manual rotating handle (6), the movable top frame (12) and the fixed clamping block (18) is two each; the number of the first bevel gear (7), the second bevel gear (8), the threaded rod (9), the threaded block (10), the limiting block (11), the fixed screw block (13), the movable screw rod (14), the movable rotating handle (15), the supporting bearing (16) and the movable clamping block (17) is four each; the four movable clamping blocks (17) and the two fixed clamping blocks (18) are all movably connected to the middle top oil cylinder (19).

4. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 1, characterized in that: A movable slide block is provided on the inner side of the movable frame (2), and a fixed long groove is provided on the inner side of the test bench body (1). The movable slide block and the fixed long groove are both two in number, and the two movable slide blocks are respectively slidably connected to the two fixed long grooves.

5. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 2, characterized in that: A fixed square hole is provided on the top of the test bench body (1), the movable square block (24) is slidably connected to the fixed square hole, the width of the movable square block (24) is equal to the width of the fixed square hole, and a screw hole matching the outer thread of the movable screw rod (22) is provided on the inner side of the movable screw block (23).

6. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 1, characterized in that: The end of the movable screw rod (14) away from the movable handle (15) sequentially penetrates the fixed screw block (13), the movable top frame (12) and the support bearing (16) and extends to the inner side of the support bearing (16); the end of the movable rod (5) away from the manual handle (6) is provided with a rolling block; the connecting frame (4) is rotatably connected to the rolling block; the end of the movable rod (5) away from the manual handle (6) sequentially penetrates the connecting frame (4) and the first bevel gear (7) and extends to the outer side of the rolling block.

7. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 1, characterized in that: A rolling bearing is arranged on the outer side of the threaded rod (9), the connecting frame (4) is fixedly connected to the rolling bearing, and the top end of the threaded rod (9) sequentially penetrates the second bevel gear (8), the connecting frame (4), the threaded block (10) and the rolling bearing and extends to the inner side of the rolling bearing.

8. The easy-to-fix test bench for the top cylinder of a dump truck according to claim 2, characterized in that: The inner sides of the two connecting frames (4) are provided with limiting square holes, and the number of the limiting square holes is four. The four limiting square blocks (11) are respectively slidably connected to the four limiting square holes. A deep groove ball bearing is arranged on the outer side of the movable screw rod (22). The right end of the movable screw rod (22) passes through the motor box (20), the test bench body (1), the movable screw block (23) and the deep groove ball bearing in sequence and extends to the inner side of the deep groove ball bearing.

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