An impact test device for a vertical reduction gearbox of an industrial vehicle

Abstract

The application discloses an industrial vehicle vertical reduction gearbox impact test device, which comprises a main frame, a mounting assembly, a plurality of roadblocks, a roller, a roller driving part, a load lifting assembly and a detection assembly, wherein the mounting assembly comprises a fixed part and a movable part, the fixed part is installed on the main frame, the movable part is in sliding connection with the fixed part, and a sample to be measured is installed on the movable part; the roadblocks are detachably installed on the peripheral part of the roller; the roller driving part is used for driving the roller to rotate; the load lifting assembly is used for providing a load for the movable part, so that the sample to be measured is pressed on the roller, and the wheel of the sample to be measured rotates along with the roller; the detection assembly is used for acquiring the impact times, impact force values and acceleration values of the sample to be measured; and a controller is used for acquiring the detection information of the detection assembly and controlling the action of the roller driving part. The industrial vehicle vertical reduction gearbox impact test device has better accuracy, reliability and safety, and can better verify the structure and service life of the reduction gearbox.

Description

Technical Field

[0001] This invention relates to the field of gearbox testing equipment, and in particular to an impact testing device for a vertical gearbox of an industrial vehicle. Background Technology

[0002] Vertical gearboxes for forklifts are primarily used in warehouse handling vehicles. With the rapid development of the logistics industry, the operating environment for warehouse forklifts has become increasingly complex. As a key drive component of these forklifts, ensuring the reliability of the vertical gearbox is a critical technical issue that urgently needs to be addressed during the research and development process. Currently, relevant standards for vertical gearboxes for forklifts have not yet been established, and impact test benches simulating road conditions for vertical gearboxes have not yet been developed on the market. At present, OEMs mainly ensure reliability through actual road tests and vehicle reinforcement tests. This results in a longer impact durability test cycle for the entire vehicle with a vertical gearbox, and it is also difficult to monitor.

[0003] In existing technologies, impact durability testing of forklift vertical gearboxes mainly relies on whole-vehicle reinforcement testing, which is time-consuming and labor-intensive, and closely related to road conditions and the overall vehicle condition. This makes it difficult to detect gearbox problems in a timely manner, thus extending the development cycle.

[0004] Therefore, how to effectively improve the accuracy of gearbox performance testing is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an impact testing device for vertical gearboxes of industrial vehicles, which can improve the accuracy, reliability and safety of gearbox performance testing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An impact testing device for a vertical gearbox of an industrial vehicle, comprising:

[0008] Main framework;

[0009] The mounting assembly includes a fixed part and a movable part. The fixed part is mounted on the main frame, and the movable part is slidably connected to the fixed part. The sample to be tested is mounted on the movable part.

[0010] The rollers and several roadblocks, the roadblocks being detachably mounted around the periphery of the rollers;

[0011] A roller drive component for driving the roller to rotate;

[0012] A load lifting assembly is used to provide a load to the movable part so that the sample to be tested is pressed against the roller, and the wheel of the sample to be tested rotates with the roller;

[0013] The detection component is used to acquire the number of impacts, impact force value, and acceleration value of the sample under test;

[0014] The controller is used to acquire the detection information of the detection component and control the action of the roller drive component.

[0015] Preferably, the fixed part is a positioning slide rod, the movable part is a sample fixing plate, and the sample to be tested is installed on the sample fixing plate; there are multiple positioning slide rods, one end of the positioning slide rod is set on the main frame, the other end passes through the sample fixing plate, and the sample fixing plate is slidably connected to the positioning slide rod.

[0016] Preferably, the device further includes a transition connecting plate, which is detachably mounted on the sample fixing plate, and the sample to be tested is mounted on the transition connecting plate.

[0017] Preferably, the load lifting assembly includes weights, a load lever, a chain, and a chain gear. The weights are mounted on the load lever, and the number of weights is adjustable. The chain meshes with the chain gear, which is mounted on the main frame. One end of the chain is connected to the sample fixing plate, and the other end is connected to the load lever. The load lever can pull the chain under the action of the weights to press the sample to be tested onto the roller.

[0018] Preferably, the load tie rod includes a load longitudinal tie rod and a load transverse tie rod, and there are at least two load longitudinal tie rods. One end of the load longitudinal tie rod is connected to the load transverse tie rod, and the other end passes through the weight. The weight is slidably connected to the load longitudinal tie rod, and the bottom of the load longitudinal tie rod is provided with a stop to prevent the weight from detaching from the load longitudinal tie rod.

[0019] Preferably, the system further includes a load lifting assembly and a positioning pin. The load lifting assembly is used to drive the load rod to lift and lower. The main frame and the weight are provided with positioning holes. The positioning pin can pass through the positioning holes of the main frame and the weight in sequence to lock a preset number of weights. The load lifting assembly includes a load lifting drive component, a load lifting wheel, and a connecting rope. One end of the connecting rope is wound around the load lifting wheel, and the other end is connected to the load rod. The load lifting drive component can drive the load lifting wheel to rotate to retract or release the connecting rope. The controller is used to control the operation of the load lifting drive component.

[0020] Preferably, the main frame includes a load frame portion and a detection frame portion. The load lifting component, the weight, and the load pull rod are all installed in the load frame portion, and the mounting component, the roller, and the roller drive component are all installed in the detection frame portion. The load frame portion and the detection frame portion are an integral structure.

[0021] Preferably, the chain gear includes a first gear, a second gear, and a third gear. The first gear is mounted on the top of the load frame portion, and the second and third gears are mounted on the bottom of the detection frame portion. The chain is sequentially connected to the load rod, the first gear, the second gear, the third gear, and the sample fixing plate.

[0022] Preferably, the detection component includes a proximity sensor and a vibration sensor, and the controller is connected to both the proximity sensor and the vibration sensor; the proximity sensor is mounted on the fixed part of the mounting component and is used to acquire the number of impacts on the sample to be tested; the vibration sensor is mounted on the movable part of the mounting component and is used to acquire the acceleration value of the sample to be tested; the controller is used to control the roller drive component to stop operating when the acceleration value acquired by the vibration sensor exceeds a preset acceleration value.

[0023] Preferably, the detection component further includes a pressure sensor installed between the roadblock and the roller, the pressure sensor being used to acquire the impact force value between the roadblock and the roller.

[0024] The present invention provides an impact testing device for a vertical gearbox of an industrial vehicle, comprising: a main frame; a mounting assembly including a fixed part and a movable part, the fixed part being mounted on the main frame, the movable part being slidably connected to the fixed part, and a sample to be tested being mounted on the movable part; rollers and several obstacles, the obstacles being detachably mounted on the periphery of the rollers; a roller drive component for driving the rollers to rotate; a load lifting component for providing a load to the movable part so that the sample to be tested is pressed against the rollers, and the wheel of the sample to be tested rotates with the rollers; a detection component for acquiring the number of impacts, impact force value, and acceleration value of the sample to be tested; and a controller for acquiring the detection information of the detection component and controlling the action of the roller drive component. The industrial vehicle vertical gearbox impact testing device provided by this invention utilizes the detachable connection between the rollers and the road obstacle to simulate the performance of the gearbox under different road conditions. Simultaneously, the load lifting component provides the necessary load to the test sample, simulating the gravitational effect of the gearbox during actual use. Furthermore, the detection component and controller automatically acquire the number of impacts, impact force values, and acceleration values ​​of the test sample, effectively saving manpower and time costs. It can also conduct experiments normally without monitoring. By controlling the rotational speed of the drive component, the speed of the gearbox is controlled to match the actual vehicle speed. The use of the detection component improves the accuracy, reliability, and safety of the experiment, and better verifies the structure and lifespan of the gearbox.

[0025] In a preferred embodiment, the detection component further includes a pressure sensor installed between the obstacle and the roller. The pressure sensor is used to acquire the impact force value between the obstacle and the roller. This configuration, using the pressure sensor, detects the impact force value when the obstacle impacts the wheel of the test sample. This impact force value is used as the actual impact force value of the gearbox during use, thereby determining whether the gearbox can withstand the impact force encountered in actual conditions and providing a reference for setting the gearbox's shock absorption capability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A front view of a specific embodiment of the impact testing device for vertical gearboxes of industrial vehicles provided by the present invention.

[0028] Figure 2 A three-dimensional structural schematic diagram of a specific embodiment of the impact testing device for vertical gearboxes of industrial vehicles provided by the present invention;

[0029] Figure 3 for Figure 2 A schematic diagram of the impact testing device for a vertical gearbox of an industrial vehicle from another perspective.

[0030] The components include: 1. Load lifting drive component; 2. Chain gear; 2-1 first gear; 2-2 second gear; 2-3 third gear; 3. Positioning slide rod; 4. Sample fixing plate; 5. Transition connecting plate; 6. Vibration sensor; 7. Proximity sensor; 8. Sample to be tested; 9. Obstacle; 10. Roller; 11. Chain; 12. Main frame; 13. Roller drive component; 14. Weight; 15. Positioning pin; 16. Load tie rod; 16-1 load longitudinal tie rod; 16-2 load transverse tie rod; 17. Connecting rope; 18. Control cabinet PLC; 19. Host computer; 20. Hinge; 21. Pressure sensor. Detailed Implementation

[0031] The core of this invention is to provide an impact testing device for vertical gearboxes of industrial vehicles, which can save manpower and time costs, requires no monitoring, can automatically detect, is more in line with actual use scenarios, and improves detection accuracy.

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please refer to Figures 1 to 3 , Figure 1 A front view of a specific embodiment of the impact testing device for vertical gearboxes of industrial vehicles provided by the present invention. Figure 2 A three-dimensional structural schematic diagram of a specific embodiment of the impact testing device for vertical gearboxes of industrial vehicles provided by the present invention; Figure 3 for Figure 2 The diagram shows a structural schematic of the vertical gearbox impact testing device for industrial vehicles from another perspective.

[0034] In this embodiment, the impact testing device for the vertical gearbox of industrial vehicles includes:

[0035] Main framework 12;

[0036] The mounting assembly includes a fixed part and a movable part. The fixed part is mounted on the main frame 12, and the movable part is slidably connected to the fixed part. The sample to be tested 8 is mounted on the movable part.

[0037] Roller 10 and several roadblocks 9, the roadblocks 9 being detachably mounted around the roller 10;

[0038] Roller drive component 13 is used to drive roller 10 to rotate;

[0039] The load lifting assembly is used to provide a load to the moving part so that the sample 8 to be tested is pressed against the roller 10, and the wheel of the sample 8 to be tested rotates with the roller 10.

[0040] The detection component is used to acquire the number of impacts, impact force value, and acceleration value of the sample 8 to be tested;

[0041] The controller is used to acquire detection information from the detection component and control the action of the roller drive component 13.

[0042] Specifically, the main frame 12 can be a metal frame with high strength and good stability, and can be welded from several steel parts; the movable part in the mounting assembly preferably slides along the longitudinal direction of the fixed part, thereby limiting the movement direction of the movable part and ensuring the stability of the experimental process; the roadblocks 9 are distributed around the circumference of the roller 10, and the circumference of the roller 10 is provided with several mounting holes. The roadblocks 9 can be set in the mounting holes through connectors. The number of mounting holes can be greater than the number of roadblocks 9. The connectors can be screws or bolts. The roadblocks 9 can be installed on the mounting holes at a certain location on the roller 10 as needed; the roller drive component 13 can be a drive motor. The controller controls the speed and rotation direction of the roller 10 through the drive motor; the load provided by the load lifting component is adjustable to adapt to the experimental requirements; the detection component is connected to the controller to transmit detection information to the controller. The controller can include a host computer 19 and a control cabinet to facilitate parameter input and adjustment.

[0043] The industrial vehicle vertical gearbox impact testing device provided by this invention utilizes the detachable connection between the roller 10 and the road barrier 9 to simulate the performance of the gearbox under different road conditions. Simultaneously, a load lifting component provides the necessary load to the test sample 8, simulating the effect of gravity on the gearbox during actual use. Furthermore, the detection component and controller automatically acquire the number of impacts, impact force, and acceleration values ​​of the test sample 8, effectively saving manpower and time costs. It can also conduct experiments normally without monitoring. By controlling the rotational speed of the drive component, the speed of the gearbox is controlled to match the actual vehicle speed. The use of the detection component enhances the accuracy, reliability, and safety of the experiment, better verifying the structure and lifespan of the gearbox.

[0044] In some embodiments, the fixed part is a positioning slide rod 3, and the movable part is a sample fixing plate 4, on which the sample 8 to be tested is mounted. There are multiple positioning slide rods 3, one end of which is mounted on the main frame 12, and the other end passes through the sample fixing plate 4, with the sample fixing plate 4 slidably connected to the positioning slide rod 3. Specifically, the number of positioning slide rods 3 is preferably 4-6, with the sample fixing plate 4 surrounding the positioning slide rods 3. The positioning slide rods 3 extend vertically, ensuring that the sample fixing plate 4 moves only vertically. The positioning slide rods 3 can be metal rods, welded and fixed to the main frame 12.

[0045] In some embodiments, a transition connecting plate 5 is also included. The transition connecting plate 5 is detachably mounted on the sample fixing plate 4, and the sample to be tested 8 is mounted on the transition connecting plate 5. Specifically, the sample to be tested 8 is fixedly connected to the transition connecting plate 5. The sample to be tested 8 can be removed by disassembling the transition connecting plate 5, and then a different sample to be tested 8 can be replaced and mounted on the transition connecting plate 5 without disassembling the sample fixing plate 4, making the operation more convenient.

[0046] In some embodiments, the load lifting assembly includes weights 14, a load lever 16, a chain 11, and a chain gear 2. Weights 14 are mounted on the load lever 16, and the number of weights 14 is adjustable. The chain 11 meshes with the chain gear 2, which is mounted on the main frame 12. One end of the chain 11 is connected to the sample fixing plate 4, and the other end is connected to the load lever 16. The load lever 16 can pull the chain 11 under the action of the weights 14, so that the sample 8 to be tested is pressed firmly onto the roller 10. Specifically, the number of weights 14 is adjustable, and the chain 11 can be replaced with other components. The meshing connection between the chain 11 and the chain gear 2 ensures the stability of the chain 11's position.

[0047] In some embodiments, the load-bearing rod 16 includes a longitudinal load-bearing rod 16-1 and a transverse load-bearing rod 16-2. There are at least two longitudinal load-bearing rods 16-1. One end of each longitudinal load-bearing rod 16-1 is connected to the transverse load-bearing rod 16-2, and the other end passes through a weight 14. The weight 14 is slidably connected to the longitudinal load-bearing rod 16-1, and a stop is provided at the bottom of the longitudinal load-bearing rod 16-1 to prevent the weight 14 from detaching from it. Specifically, the transverse load-bearing rod 16-2 is connected to multiple longitudinal load-bearing rods 16-1. The chain 11 and chain gear 2 each include two sets, respectively disposed on both sides of the main frame 12. The chains 11 located on both sides of the main frame 12 are each connected to one longitudinal load-bearing rod 16-1.

[0048] In some embodiments, the system also includes a load lifting assembly and a positioning pin 15. The load lifting assembly is used to drive the load lever 16 to lift and lower. Positioning holes are provided on both the main frame 12 and the weights 14. The positioning pin 15 can pass through the positioning holes of the main frame 12 and the weights 14 in sequence to lock a preset number of weights 14. The load lifting assembly includes a load lifting drive component 1, a load lifting wheel, and a connecting rope 17. One end of the connecting rope 17 is wound around the load lifting wheel, and the other end is connected to the load lever 16. Specifically, the connecting rope 17 is connected to the load horizontal lever 16-2, preferably at the middle position of the load horizontal lever 16-2, to ensure the stability of the load when lifted. The load lifting drive component 1 can drive the load lifting wheel to rotate to retract or release the connecting rope 17. The controller is used to control the operation of the load lifting drive component 1. Specifically, the connecting rope 17 is preferably a steel wire rope, which has high strength and stable traction effect.

[0049] In some embodiments, the main frame 12 includes a load frame portion and a detection frame portion. The load lifting assembly, weight 14, and load pull rod 16 are all installed in the load frame portion, while the mounting assembly, roller 10, and roller drive component 13 are all installed in the detection frame portion. Furthermore, the load frame portion and the detection frame portion are an integral structure, improving the overall structural stability. Specifically, the main frame 12 can be formed by welding and fixing several steel components.

[0050] In some embodiments, the chain gear 2 includes a first gear 2-1, a second gear 2-2, and a third gear 2-3. The first gear 2-1 is mounted on the top of the load frame section, and the second gear 2-2 and the third gear 2-3 are mounted on the bottom of the detection frame section. The chain 11 is sequentially connected to the load tie rod 16, the first gear 2-1, the second gear 2-2, the third gear 2-3, and the sample fixing plate 4. This arrangement effectively utilizes space, and the winding arrangement of the chain 11 allows for a transition from the load frame section to the detection frame section, reducing the overall size of the device. Of course, the number and position of the chain gears 2 can also be adjusted as needed.

[0051] In some embodiments, the detection component includes a proximity sensor 7 and a vibration sensor 6, with a controller connected to both. The proximity sensor 7 is mounted on a fixed portion of the mounting assembly and is used to acquire the number of impacts on the sample 8 under test. The vibration sensor 6 is mounted on a movable portion of the mounting assembly and is used to acquire the acceleration value of the sample 8 under test. The controller is used to control the roller drive component 13 to stop operating when the acceleration value acquired by the vibration sensor 6 exceeds a preset acceleration value. Specifically, an alarm component is also included. When the acceleration value of the sample 8 under test acquired by the vibration sensor 6 exceeds the preset acceleration value, the controller issues an alarm signal through the alarm component and stops supplying power to the roller drive component 13 to ensure the safety of the test.

[0052] In some embodiments, the detection assembly further includes a pressure sensor 21, which is installed between the barrier 9 and the roller 10. The pressure sensor 21 is used to acquire the impact force value between the barrier 9 and the roller 10. This configuration, through the pressure sensor 21, detects the impact force value when the barrier 9 impacts the wheel of the test sample 8, using this as the impact force value during actual use of the gearbox. This allows for determining whether the gearbox can withstand the impact force encountered in actual conditions, providing a reference for setting the gearbox's shock absorption capability. It should be noted that the barrier 9 and the connecting component are preferably clearance-fitted. The surface of the barrier 9 has countersunk holes, through which countersunk bolts pass and connect to the roller 10. While ensuring the connection between the barrier 9 and the roller 10, the barrier 9 can also move relative to the roller 10, thereby impacting the pressure sensor 21 to acquire the impact force value.

[0053] Specifically, in one embodiment, the industrial vehicle vertical gearbox impact testing device includes:

[0054] The load lifting assembly, via the load lifting drive component 1, drives the connecting rope 17 to pull the load lever 16, causing the weight 14 to move upwards as a whole. The number of weights 14 can be increased or decreased via the positioning pin 15 to meet the testing requirements of the vertical gearbox under different loads. During load adjustment, the chain 11 is in a slack state. When the load adjustment is complete, the weight 14 is lowered to its lowest position, slackening the connecting rope 17. At this point, the weight 14 is divided into two parts: the upper part is locked by the positioning pin 15 and does not participate in the load weight; the lower movable part is the effective load weight 14. The effective weight 14, connected to the load lever 16, applies a vertically downward load force to the sample fixing plate 4 via the chain 11 and chain gear 2. Each weight 14 weighs 0.5t and is adjusted according to the load required by the sample 8 to simulate the actual load.

[0055] The drive control and monitoring components include a controller, a roller drive component 13, a detection component, and the controller itself. The controller comprises a host computer 19 with software and a control cabinet PLC 18. The host computer 19 software and the control cabinet PLC 18 control the speed of the roller drive component 13. The roller drive component 13 drives the roller 10 to rotate via a hinge 20. The host computer 19 software interface only requires inputting the desired vehicle speed. The software calculates the corresponding motor speed command through underlying code formulas and sends it to the control cabinet PLC 18 to control the roller drive. The rotating part 13 rotates to simulate the road impact experienced by an actual forklift at different speeds. A road obstacle 9 is mounted on the roller 10. To better understand the magnitude of the impact force on the test specimen at different speeds and different heights of the road obstacle 9, a pressure sensor 21 is installed between the center of the road obstacle 9 and the mounting surface of the roller 10 to collect impact force data for each test. To avoid entanglement of the pressure sensor 21 lead wire during the rotation of the roller 10, the sensor lead wire is led out through the center of the roller 10 in a conductive ring to the PLC signal acquisition terminal. The two ends of the road obstacle 9 are bolted together. The test specimen is subjected to a vertically downward load, and the roller 10 rotates to drive the wheel of the test sample 8 to rotate. The test sample 8 is bolted to the sample fixing plate 4 through the transition connecting plate 5. Different models of vertical gearboxes can be installed by replacing different transition connecting plates 5. The sample fixing plate 4 is connected to the positioning guide rod through the bushing to ensure that the test sample 8 can only slide up and down when it is impacted. The two sides of the sample fixing plate 4 are connected to the chain 11 to apply load to the test sample 8. During the test, the test sample 8 is dynamically monitored by the proximity sensor 7 and the vibration sensor 6. The proximity sensor 7 is used to accumulate the number of impacts. Each time the test specimen is impacted, the sample fixing plate 4 will move up and down once. At this time, the proximity sensor 7 receives a signal and counts once. The vibration sensor 6 is mainly used to monitor whether the acceleration value deviates from the predetermined target value range during the test. The upper computer 19 software can set the acceleration value protection range. If it deviates from the target protection value, the system determines that the test specimen has malfunctioned. The control cabinet immediately cuts off the power and saves the test record. The test record includes the number of impacts, the impact force value and the acceleration value.

[0056] The test bench includes a main frame 12 and a positioning slide bar 3. The main frame 12 is used to fix the load lifting drive component 1, chain gear 2, positioning slide bar 3, roller 10, roller drive component 13, and positioning pin 15. The bottom of the positioning slide bar 3 is a bolt structure, which can be directly screwed onto the main frame 12 and allow the sample fixing plate 4 to slide up and down.

[0057] This industrial vehicle vertical gearbox impact testing device can achieve the desired effect by adjusting the number of 14 weights, closely matching the actual situation. The load lifting component makes it convenient and quick to change the number of 14 weights. Different speeds of the vertical gearbox wheels can be achieved by controlling the speed and forward / reverse rotation of the drive component. The road obstacle 9 can be replaced to better simulate the road conditions during actual use of the vertical gearbox. It can test both the structural strength of the gearbox and the tire's durability and impact resistance. The gearbox is positioned using four sliding rods, ensuring that the gearbox can only be impacted vertically. It is convenient to change different vertical gearboxes for testing. The impact of the vertical gearbox is monitored in real time by pressure sensor 21, vibration sensor 6, and proximity sensor 7, which can better detect the sample condition. In actual use, road surface damage and uneven surfaces can directly impact the gearbox, potentially leading to wheel damage over time. Other issues include broken studs connecting the gearbox output to the wheel, oil leaks in the gearbox seals, and deterioration of gear meshing within the gearbox, resulting in reduced performance. These problems typically only become apparent after prolonged vehicle use. This device saves manpower and time, allows for normal testing even without monitoring, and adjusts the load by adding or removing 14 weights. Controlling the speed of the drive components allows the gearbox to align with the actual vehicle speed. The addition of sensors further enhances the accuracy, reliability, and safety of the experiment.

[0058] The impact testing device for vertical gearboxes of industrial vehicles provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the testing method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An impact testing device for a vertical gearbox of an industrial vehicle, characterized in that, include: Main framework (12); The mounting assembly includes a fixed part and a movable part. The fixed part is mounted on the main frame (12), and the movable part is slidably connected to the fixed part. The sample to be tested (8) is mounted on the movable part. The fixed part is a positioning slide rod (3), and the movable part is a sample fixing plate (4). The sample to be tested (8) is mounted on the sample fixing plate (4). Roller (10) and several roadblocks (9), the roadblocks (9) being detachably mounted on the periphery of the roller (10); A roller drive component (13) is used to drive the roller (10) to rotate; A load lifting assembly is used to provide a load for the movable part so that the sample to be tested (8) is pressed against the roller (10), and the wheel of the sample to be tested (8) rotates with the roller (10); the load lifting assembly includes a weight (14), a load lever (16), a chain (11) and a chain gear (2), the weight (14) is mounted on the load lever (16), and the number of weights (14) is adjustable; the chain (11) meshes with the chain gear (2), the chain gear (2) is mounted on the main frame (12), one end of the chain (11) is connected to the sample fixing plate (4), and the other end is connected to the load lever (16); the load lever (16) can pull the chain (11) under the action of the weight (14) so ​​that the sample to be tested (8) is pressed against the roller (10); A detection component is used to acquire the number of impacts, impact force value, and acceleration value of the sample to be tested (8). The detection component includes a proximity sensor (7), a vibration sensor (6), and a pressure sensor (21). The proximity sensor (7) is installed on the fixed part of the mounting component and is used to acquire the number of impacts of the sample to be tested (8). The vibration sensor (6) is installed on the movable part of the mounting component and is used to acquire the acceleration value of the sample to be tested (8). The pressure sensor (21) is installed between the obstacle (9) and the roller (10) and is used to acquire the impact force value between the obstacle (9) and the roller (10). The controller is used to acquire the detection information of the detection component and control the roller drive component (13) to move; the controller is connected to both the proximity sensor (7) and the vibration sensor (6); the controller is used to control the roller drive component (13) to stop moving when the acceleration value acquired by the vibration sensor (6) exceeds the preset acceleration value.

2. The impact testing device for vertical gearboxes of industrial vehicles according to claim 1, characterized in that, There are multiple positioning slide rods (3). One end of the positioning slide rod (3) is set on the main frame (12), and the other end passes through the sample fixing plate (4). The sample fixing plate (4) is slidably connected to the positioning slide rod (3).

3. The impact testing device for vertical gearboxes of industrial vehicles according to claim 2, characterized in that, It also includes a transition connection plate (5), which is detachably mounted on the sample fixing plate (4), and the sample to be tested (8) is mounted on the transition connection plate (5).

4. The impact testing device for vertical gearboxes of industrial vehicles according to claim 1, characterized in that, The load lever (16) includes a load longitudinal lever (16-1) and a load transverse lever (16-2). There are at least two load longitudinal levers (16-1). One end of the load longitudinal lever (16-1) is connected to the load transverse lever (16-2), and the other end passes through the weight (14). The weight (14) is slidably connected to the load longitudinal lever (16-1), and the bottom of the load longitudinal lever (16-1) is provided with a stop to prevent the weight (14) from detaching from the load longitudinal lever (16-1).

5. The impact testing device for vertical gearboxes of industrial vehicles according to claim 1, characterized in that, It also includes a load lifting assembly and a positioning pin (15). The load lifting assembly is used to drive the load lever (16) to lift. The main frame (12) and the weight (14) are provided with positioning holes. The positioning pin (15) can pass through the positioning holes of the main frame (12) and the weight (14) in sequence to lock a preset number of weights (14). The load lifting assembly includes a load lifting drive component (1), a load lifting wheel and a connecting rope (17). One end of the connecting rope (17) is wrapped around the load lifting wheel and the other end is connected to the load lever (16). The load lifting drive component (1) can drive the load lifting wheel to rotate to retract or release the connecting rope (17). The controller is used to control the action of the load lifting drive component (1).

6. The impact testing device for vertical gearboxes of industrial vehicles according to claim 5, characterized in that, The main frame (12) includes a load frame part and a detection frame part. The load lifting component, the weight (14), and the load pull rod (16) are all installed in the load frame part. The mounting component, the roller (10), and the roller drive component (13) are all installed in the detection frame part. The load frame part and the detection frame part are an integral structure.

7. The impact testing device for vertical gearboxes of industrial vehicles according to claim 6, characterized in that, The chain gear (2) includes a first gear (2-1), a second gear (2-2), and a third gear (2-3). The first gear (2-1) is installed on the top of the load frame part, and the second gear (2-2) and the third gear (2-3) are installed on the bottom of the detection frame part. The chain (11) is connected in sequence to the load pull rod (16), the first gear (2-1), the second gear (2-2), the third gear (2-3), and the sample fixing plate (4).

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