A forklift brake performance detection device

Abstract

The present application relates to the technical field of brake detection, and more particularly to a forklift brake performance detection device.The technical scheme comprises a rack, a detection table and a water flow cleaning assembly, a second hydraulic rod is arranged inside the first bottom groove, a first stroke frame is arranged at the extension end of the second hydraulic rod, a first godet is rotatably installed inside the first stroke frame, a wheel speed sensor is arranged at the shaft end of the first godet, a second godet is rotatably installed inside the second stroke frame, a center frame is arranged at the upper end of the sixth hydraulic rod, and a press roller is arranged inside the fourth stroke frame.The cleaning structure for stripping tire foreign matter is arranged on the detection table, which can remove tire foreign matter, avoid detection errors, prevent godet scratches and tire burst, and improve brake detection accuracy and safety.

Description

Technical Field

[0001] This invention relates to the field of braking testing technology, and in particular to a forklift braking performance testing device. Background Technology

[0002] With the popularization and development of electric vehicles, the problems encountered during their operation are also gradually increasing. As one of the most important components of new energy vehicles, the quality of the battery system directly affects the performance of the electric vehicle. Forklifts are widely used in the handling of electric vehicle batteries, and they are also widely used in the manufacturing processes of other facilities within electric vehicles. It can be said that forklifts are a widely used industrial vehicle for loading, unloading, and handling goods.

[0003] The braking system of a forklift is crucial for its safe operation. Common types of braking systems include service brakes and parking brakes. Service brakes are used to decelerate or stop the forklift during normal driving and are usually operated via the brake pedal; parking brakes are used to prevent the forklift from slipping when parked and are usually operated via the handbrake.

[0004] During forklift maintenance, it is necessary to periodically test the braking performance of both types of vehicles, measuring braking force, braking coordination time, and other braking parameters. Forklifts often operate in areas with rough surfaces such as warehouses, construction sites, and ports, where debris such as packaging fragments, construction gravel, and metal scraps are frequently scattered. When the forklift tires roll, the tread grooves can easily trap foreign objects of matching size. This is often due to the following factors: to improve grip, forklift tire tread grooves are deep and widely spaced, creating natural traction space; some solid tires have high hardness, making it difficult for embedded foreign objects to dislodge due to tire deformation.

[0005] Embedded foreign objects may cause uneven contact between the tire and the roller, resulting in fluctuations in the collected braking parameters and causing the tested tire to be misjudged as having unbalanced braking force.

[0006] Therefore, those skilled in the art have provided a forklift braking performance testing device to solve the problems mentioned in the background art. Summary of the Invention

[0007] The purpose of this invention is to address the problems existing in the background art by proposing a forklift braking performance testing device.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A forklift braking performance testing device includes a frame, a testing platform, and a water flow cleaning assembly;

[0010] The testing platform has a first bottom groove and a second bottom groove inside; the water flow cleaning component is provided at the front end of the testing platform.

[0011] The first bottom groove is provided with a second hydraulic rod, the telescopic end of the second hydraulic rod is provided with a first stroke frame, and two symmetrically distributed first idlers are rotatably installed inside the first stroke frame. The shaft end of the first idler is provided with a wheel speed sensor.

[0012] The second bottom groove is provided with a third hydraulic rod, the upper end of the third hydraulic rod is provided with a second stroke frame, two symmetrically distributed second support rollers are rotatably installed inside the second stroke frame, the upper end of the second stroke frame is provided with a sixth hydraulic rod, the upper end of the sixth hydraulic rod is provided with a central frame, the central frame is provided with a fifth hydraulic rod, the upper end of the fifth hydraulic rod is provided with a fourth stroke frame, the fourth stroke frame is provided with a pressure roller, and the outer wall of the pressure roller is rotatably installed with multiple equidistantly distributed ball bearings.

[0013] Preferably, a first motor is provided at the rear end of the testing platform, and a brush roller rotatably mounted inside the second bottom groove is provided at the output end of the first motor. The outer wall of the brush roller is provided with a plurality of cleaning brushes arranged in a ring array. A pump shaft is rotatably mounted inside the water flow cleaning assembly. An impeller rotatably mounted inside the water flow cleaning assembly is sleeved on the outer wall of the pump shaft. A driven wheel is sleeved on the outer wall of the pump shaft. A drive wheel with a radius larger than the radius of the driven wheel is sleeved on the front end of the brush roller on the testing platform. The driven wheel and the drive wheel are connected by a belt.

[0014] Preferably, the water flow cleaning assembly includes cleaning pipes, and cleaning pipes are provided on the inner walls of both sides of the second bottom tank. Multiple cleaning nozzles are provided on each cleaning pipe at equal intervals. A pressure pump is provided at the upper end of the water flow cleaning assembly. The output end of the pressure pump is connected to two cleaning pipes on both sides of the second bottom tank through a U-shaped pipe. The output end of the water flow cleaning assembly is provided with a delivery pipe connected to the input end of the pressure pump.

[0015] Preferably, the lower inner wall of the second bottom trough is provided with a flow guide surface, and the lower inner wall of the second bottom trough is provided with a discharge trough that penetrates the lower end of the detection platform. The upper end of the frame is provided with a trough frame located below the discharge trough.

[0016] Preferably, the upper end of the testing platform is provided with two symmetrically distributed first electric push rods, each of the first electric push rods having a guide plate at its telescopic end. The two guide plates are symmetrically distributed on both sides above the second bottom groove and are flared at one end. Each guide plate has multiple equidistantly distributed guide rollers rotatably installed inside it.

[0017] Preferably, guide platforms are provided at both ends of the frame, and ramps are provided at both ends of the detection platform. The two ramps are located between the two guide platforms. Two parallel guide grooves are provided at the upper ends of the frame and the ramps. A center platform connected to the first bottom groove is provided between the two first idlers.

[0018] Preferably, a grid is provided above the central frame, and equidistant side grooves are provided inside the upper end of the central frame. A scraper is provided in the grid inside the side groove, and the scraper is misaligned with the ball bearing. A connecting frame is provided on the grid, and a fourth hydraulic rod is provided on the outer wall of the central frame. A third stroke frame is provided at the upper end of the fourth hydraulic rod, and guide rods that are slidably installed inside the third stroke frame are provided at both ends of the connecting frame.

[0019] Preferably, a second motor is provided at the upper end of the third stroke frame, a rectangular frame is provided at one end of the connecting frame, toothed plates are provided on the inner walls of both the upper and lower sides of the rectangular frame, an intermittent gear is provided at the output end of the second motor, the intermittent gear always meshes with only one toothed plate on the upper or lower side of the rectangular frame, a horizontally distributed storage groove is provided inside the upper side of the second bottom groove, a first hydraulic rod is provided on the inner wall of the storage groove, and an extension plate is provided at the telescopic end of the first hydraulic rod.

[0020] Preferably, the lower end of the testing platform is provided with two symmetrically distributed first bearing seats, and a first rotating shaft is rotatably mounted between the two first bearing seats, with a first rotating seat sleeved on the outer wall of the first rotating shaft;

[0021] Two symmetrically distributed second bearing seats are provided on one side of the upper end of the frame. A second rotating shaft is rotatably installed inside the two second bearing seats. A second rotating seat is sleeved on the outer wall of the second rotating shaft. The first rotating seat and the second rotating seat are connected by a second electric push rod.

[0022] The lower end of the testing platform is provided with two symmetrically distributed third rotating seats, and the upper end of the frame is provided with two symmetrically distributed third bearing seats; a third rotating shaft is provided between the two third rotating seats, and the two ends of the third rotating shaft are respectively rotatably disposed in the two third bearing seats.

[0023] Preferably, an infrared sensor is provided at the upper end of the testing platform, a PLC controller is provided at the upper end of the frame, and an tilt sensor is provided at the lower end of the testing platform.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] During use, the forklift slowly drives in, and the two tires to be detected on the left and right sides of the forklift are placed on the first idler roller respectively. The infrared sensor indicates that the alignment is complete. The operator presses the brake pedal in the cab and records various braking parameters. The rotation speed of the first idler roller is detected by the wheel speed sensor at the end of the first idler roller shaft. The braking effect of the service brake is evaluated by combining the idler roller rotation speed with the braking time and deceleration curve.

[0026] With the tilt sensor, the tilt angle of the test platform can be adjusted to monitor whether the forklift is slipping. If the forklift displacement exceeds a certain value within a few minutes, it is deemed unqualified, thereby evaluating the braking effect of the parking brake.

[0027] Before testing, the forklift's tire to be tested is first supported by the second idler roller and partially lowered into the second bottom groove. Inside the second bottom groove, the tire to be tested is washed with high-pressure water. The high-pressure water can wash away the mud, sand, and small stones in the tread grooves. In addition, the ball bearings that squeeze the outer wall of the tire to be tested apply radial force to the tire, widening the gaps in the tread grooves and making it easier to loosen deep foreign objects. The cleaning position is adjusted by rotating the tire to be tested. Finally, the residual foreign objects are removed by rotating the cleaning brush, ensuring that there are no protrusions or embedded objects on the surface of the tire to be tested, reducing the detection error of braking parameters.

[0028] Removing metal foreign objects can prevent them from popping out and injuring people when the idler rollers are rotating at high speed, and from scratching the idler rollers, sensors and other components. It also reduces equipment maintenance costs, ensures the reliability of brake detection data, improves equipment safety and operating efficiency, and makes the detection process more suitable for the complex actual working environment of forklifts. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the first-view structure of the main view of the present invention;

[0030] Figure 2 This is a schematic diagram of the second perspective structure of the main view of the present invention;

[0031] Figure 3 This is a schematic diagram of the third-view structure of the main view of the present invention;

[0032] Figure 4 This is a schematic diagram of the fourth perspective structure of the main view of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the first bottom groove of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the second bottom groove of the present invention;

[0035] Figure 7 This is a schematic diagram of the guide plate of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the second idler roller of the present invention;

[0037] Figure 9 This is a first-view perspective three-dimensional structural diagram of the cleaning tube of the present invention;

[0038] Figure 10 This is a two-dimensional structural diagram of the cleaning tube of the present invention from a second perspective;

[0039] Figure 11 This is a schematic diagram of the internal structure of the water flow cleaning component of the present invention;

[0040] Figure 12 This is a schematic diagram of the structure of the third hydraulic rod and the groove frame of the present invention;

[0041] Figure 13 This is a schematic diagram of the connecting frame of the present invention;

[0042] Figure 14 This is a schematic diagram of the fourth stroke frame of the present invention;

[0043] Figure 15 This is a schematic diagram of the structure of the second motor of the present invention.

[0044] Reference numerals: 1. Frame; 2. Testing table; 3. PLC controller; 4. Guide table; 5. Guide plate; 6. Water flow cleaning assembly; 7. Tank frame; 8. Slope; 9. Infrared sensor; 10. Guide trough; 11. First hydraulic rod; 12. Receiving trough; 13. Extension plate; 14. Cleaning pipe; 15. First bottom trough; 16. Center platform; 17. First idler roller; 18. First electric push rod; 19. Guide roller; 20. Second hydraulic rod; 21. First stroke frame; 22. Wheel speed sensor; 23. Third hydraulic rod; 24. Second stroke frame; 25. Discharge trough; 26. Guide surface; 27. Center frame; 28. Second bottom trough; 29. ​​Grille; 30. First motor; 31. Brush roller; 32. Cleaning brush; 33. Conveying pipe; 34. Pressure pump 35. Cleaning nozzle; 36. Driven wheel; 37. Drive wheel; 38. Belt; 39. Pump shaft; 40. Tilt sensor; 41. First bearing seat; 42. First rotating seat; 43. First rotating shaft; 44. Second electric push rod; 45. Second rotating seat; 46. Second bearing seat; 47. Second rotating shaft; 48. Third bearing seat; 49. Third rotating shaft; 50. Third rotating seat; 51. Fourth hydraulic rod; 52. Third stroke frame; 53. Second motor; 54. Connecting frame; 55. Guide rod; 56. Pressure roller; 57. Side groove; 58. Scraper; 59. Ball bearing; 60. Fourth stroke frame; 61. Fifth hydraulic rod; 62. Rectangular frame; 63. Intermittent gear; 64. Toothed plate; 65. Impeller; 66. Second idler roller; 67. Sixth hydraulic rod. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1:

[0047] like Figure 1 , 2 5 and 6, a forklift braking performance testing device, including a frame 1, a testing platform 2 and a water flow cleaning assembly 6, the testing platform 2 is arranged above the frame 1, the testing platform 2 has a first bottom groove 15 and a second bottom groove 28 inside, the first bottom groove 15 is arranged with a second hydraulic rod 20 inside, the telescopic end of the second hydraulic rod 20 is arranged with a first stroke frame 21, two symmetrically distributed first idler rollers 17 are rotatably installed inside the first stroke frame 21, the shaft end of the first idler roller 17 is arranged with a wheel speed sensor 22, the upper end of the testing platform 2 is arranged with an infrared sensor 9, and the upper end of the frame 1 is arranged with a PLC controller 3.

[0048] like Figure 3 and 7 The upper end of the testing table 2 is provided with two symmetrically distributed first electric push rods 18. Each first electric push rod 18 has a guide plate 5 at its telescopic end. The two guide plates 5 are symmetrically distributed on both sides above the second bottom groove 28 and are flared at one end. Multiple guide rollers 19 are rotatably installed inside the guide plates 5.

[0049] like Figure 3 , 4 5 and 6, guide platforms 4 are provided at both ends of the frame 1, and ramps 8 are provided at both ends of the testing platform 2. The two ramps 8 are located between the two guide platforms 4. Two parallel guide grooves 10 are provided at the upper ends of the frame 1 and the ramps 8. A center platform 16 connected to the first bottom groove 15 is provided between the two first idlers 17. The guide platforms 4 guide the tire being tested, the ramps 8 guide the forklift to drive onto the testing platform 2, and the guide grooves 10 guide the forklift to drive in the center. When not testing, since the height of the center platform 16 is greater than the height of the first idlers 17, the center platform 16 supports the tire being tested, allowing the forklift to pass through the first bottom groove 15. During testing, the first stroke frame 21 is driven by the second hydraulic rod 20, thereby changing the height of the two first idlers 17. The two first idlers 17 support the tire being tested, and the center platform 16 no longer supports the tire being tested.

[0050] like Figure 6 The lower inner wall of the second bottom trough 28 is provided with a guide surface 26, and the lower inner wall of the second bottom trough 28 is provided with a discharge trough 25 that penetrates the lower end of the detection platform 2. The upper end of the frame 1 is provided with a trough frame 7 located below the discharge trough 25.

[0051] In this embodiment, the operator starts the equipment via PLC controller 3. The forklift slowly travels along the guide groove 10 of the guide platform 4 and enters the testing platform 2 via the ramp 8 with a certain slope. The tire to be tested is aligned with the entrance of the second bottom groove 28. The trumpet-shaped angle formed by the guide plate 5 is approximately 30° to 60°. The first electric push rod 18 drives the guide plate 5 so that the two sides of the tire to be tested move closer to the guide roller 19. The annular groove on the surface of the guide roller 19 contacts the side of the tire to be tested, and the friction guides the forklift to be precisely positioned. When the infrared sensor 9 detects that the deviation between the center of the tire to be tested and the central axis of the first bottom groove 15 is less than the set threshold, a positioning completion signal is issued. Utilizing the mechanical guiding action of the guide platform 4, guide groove 10, and guide plate 5, combined with the position detection of the infrared sensor 9, the mechanical guiding action of the guide platform 4, guide groove 10, and guide plate 5 ensures that the tire to be tested on the forklift is aligned with the first roller 17 of the testing device, providing a stable reference for subsequent testing.

[0052] The guiding system, consisting of the guide platform 4, guide groove 10, and guide plate 5, in conjunction with the infrared sensor 9, ensures that the positioning deviation of the tire being inspected meets the measurement accuracy requirements, thus solving the error caused by misalignment in traditional inspection. The PLC controller 3 integrates all action commands; except for pressing the brake pedal, the inspection process requires no manual intervention, reducing the inspection time for a single forklift and adapting to batch inspection scenarios. The tire being inspected is placed on the first idler roller 17. When the vehicle brakes, the braking force is transmitted to the first idler roller 17 through the tire being inspected. The braking forces of the left and right tires being inspected are collected, and the difference is calculated to determine whether the vehicle is veering off course.

[0053] It is worth noting that the guide surface 26 of the discharge trough 25 is designed in a figure-eight shape with a certain slope, and a V-shaped liquid collection trough is set at the bottom to guide the cleaning waste liquid and foreign objects to the discharge trough 25, thereby avoiding the accumulation of foreign objects. A removable filter screen is installed at the inlet of the discharge trough 25 to intercept large particles such as metal shavings. The angle of the trumpet-shaped guide plates 5 can be adjusted within the range of 30°-60° by the first electric push rod 18, thereby adapting to different types of forklifts. The guide roller 19 has annular grooves on its surface to increase the friction with the side of the tire being tested and prevent slippage during guidance.

[0054] Example 2:

[0055] like Figure 5 The front end of the testing platform 2 is equipped with a water flow cleaning component 6. The water flow cleaning component 6 includes a cleaning pipe 14. The inner walls on both sides of the second bottom tank 28 are provided with cleaning pipes 14, and multiple cleaning nozzles 35 are provided on each cleaning pipe 14 at equal intervals.

[0056] like Figure 9 and 10A pressure pump 34 is installed at the upper end of the water flow cleaning component 6. The output end of the pressure pump 34 is connected to two cleaning pipes 14 on both sides of the second bottom tank 28 via a U-shaped pipe. The output end of the water flow cleaning component 6 is connected to a delivery pipe 33 that is connected to the input end of the pressure pump 34. The clean water drawn by the water flow cleaning component 6 enters the pressure pump 34 for pressurization through the delivery pipe 33, and is simultaneously delivered to the two sets of cleaning pipes 14 through the U-shaped pipe.

[0057] like Figure 6 , 8 13 and 14, the second bottom groove 28 is provided with a third hydraulic rod 23, the upper end of the third hydraulic rod 23 is provided with a second stroke frame 24, the second stroke frame 24 is rotatably mounted with two symmetrically distributed second support rollers 66, the upper end of the second stroke frame 24 is provided with a sixth hydraulic rod 67, the upper end of the sixth hydraulic rod 67 is provided with a center frame 27, the center frame 27 is provided with a fifth hydraulic rod 61, the upper end of the fifth hydraulic rod 61 is provided with a fourth stroke frame 60, the fourth stroke frame 60 is provided with a pressure roller 56, the outer wall of the pressure roller 56 is rotatably mounted with multiple equidistantly distributed balls 59.

[0058] like Figure 9 and 10 The rear end of the testing platform 2 is equipped with a first motor 30, and the output end of the first motor 30 is equipped with a brush roller 31 that is rotatably installed inside the second bottom groove 28. The outer wall of the brush roller 31 is equipped with a plurality of cleaning brushes 32 arranged in a ring array.

[0059] like Figure 13 and 14 A grid 29 is provided above the central frame 27. Equally spaced side grooves 57 are formed inside the upper part of the central frame 27. A scraper 58 is located inside the side grooves 57 within the grid 29. The scraper 58 is offset from the ball bearing 59. A connecting frame 54 is provided on the grid 29. A fourth hydraulic rod 51 is provided on the outer wall of the central frame 27. A third stroke frame 52 is provided at the upper end of the fourth hydraulic rod 51. Guide rods 55, which are slidably installed inside the third stroke frame 52, are provided at both ends of the connecting frame 54. The grid 29 supports the scraper 58 and the connecting frame 54, and also allows waste liquid from cleaning the tires being inspected to pass through. The connecting frame 54 is slidably supported inside the third stroke frame 52 via the guide rod 55. Inside the side groove 57, the connecting frame 54 can move both laterally (this lateral movement is achieved via the second motor 53 and intermittent gear 63, details below) and longitudinally (this longitudinal movement is achieved by the fourth hydraulic rod 51 changing its extension length to drive the third stroke frame 52 to move longitudinally). The scraper 58 scrapes the tread grooves of the tire being inspected through both longitudinal and lateral movement. The sixth hydraulic rod 67 drives the center frame 27 to rise or fall, and the distance from the center frame 27 to the tire being inspected changes as needed.

[0060] like Figure 4 ,13 15. A second motor 53 is provided at the upper end of the third stroke frame 52. A rectangular frame 62 is provided at one end of the connecting frame 54. Toothed plates 64 are provided on the inner walls of both the upper and lower sides of the rectangular frame 62. An intermittent gear 63 is provided at the output end of the second motor 53. The intermittent gear 63 always meshes with only one toothed plate 64 on the upper or lower side of the rectangular frame 62. The second motor 53 drives the intermittent gear 63 to push the two sets of toothed plates 64, thereby driving the rectangular frame 62 to move laterally.

[0061] The central angle corresponding to the teeth on the intermittent gear 63 is less than 180 degrees. When the second motor 53 rotates, the intermittent gear 63 meshes with the upper toothed plate 64 of the rectangular frame 62, and does not mesh with the lower toothed plate 64 of the rectangular frame 62, thus driving the rectangular frame 62 to move laterally in one direction. Conversely, when the second motor 53 rotates in the opposite direction, the intermittent gear 63 meshes with the lower toothed plate 64 of the rectangular frame 62, and does not mesh with the upper toothed plate 64 of the rectangular frame 62, thus driving the rectangular frame 62 to move laterally in another direction.

[0062] like Figure 4 and 6 The second bottom groove 28 has a horizontally distributed storage groove 12 inside its upper side. A first hydraulic rod 11 is provided on the inner wall of the storage groove 12, and an extension plate 13 is provided at the telescopic end of the first hydraulic rod 11. When the tire being tested is being cleaned, the extension plate 13 is stored in the storage groove 12. After the tire being tested is cleaned, the second idler roller 66 continues to rise. The first hydraulic rod 11 supports the tire being tested in the second bottom groove 28 by driving the extension plate 13. At this time, the second idler roller 66 and the drive extension plate 13 cooperate to allow the forklift to pass through the second bottom groove 28. At the same time, the drive extension plate 13 can also prevent the tire being tested from directly pressing on the cleaning brush 32, thus avoiding damage to the cleaning brush 32 and the brush roller 31.

[0063] In this embodiment, the cleaning brushes 32 are arranged in a spiral ring array. When the cleaning brushes 32 rotate, they can perform spiral scraping on the tread grooves of the tire being inspected. Combined with the slow rotation of the second idler roller 66, 360° cleaning without dead angles is achieved. The cleaning nozzles 35 spray in a fan shape. The spacing of the cleaning nozzles 35 can be set according to actual needs. The spraying areas of the cleaning nozzles 35 overlap to ensure that there are no blind spots in the cleaning of the tire being inspected.

[0064] The scraper blade 58 is serrated and staggered with the ball bearings 59. When the pressure roller 56 presses against the tire being inspected, the pressure roller 56 and the ball bearings 59 rise simultaneously. The ball bearings 59 press against both sides of the tread grooves of the tire being inspected, widening the gaps in the tread grooves. The scraper blade 58 inserts into the tread grooves of the tire being inspected for lateral and longitudinal scraping, improving the foreign object removal rate. The fourth stroke frame 60 has a built-in pressure sensor that provides real-time feedback on the pressure of the pressure roller 56. When a metal foreign object is detected, the pressure is automatically reduced to prevent damage to the tire being inspected. The scraper blade 58, made of polyurethane material, has good elasticity and can adapt to changes in the depth of the tread grooves, with no rigid impact during scraping.

[0065] Intermittent gear 63 meshes with toothed plate 64, driving scraper 58 to move laterally a certain distance, realizing step-by-step scraping and enhancing the peeling effect on stubborn foreign objects.

[0066] After the tire under test enters the second bottom groove 28, the third hydraulic rod 23 drives the second stroke frame 24 to rise, and the second support roller 66 inside the second stroke frame 24 supports the tire under test. The water flow cleaning assembly 6 and the pressure pump 34 are started. The water flow cleaning assembly 6 draws clean water through the impeller 65, which is pressurized by the pressure pump 34. The water pressure of the pressure pump 34 is adjusted according to the depth of the tread grooves of the tire under test. After the cleaning nozzle 35 sprays water, it forms a fan shape with a central angle of approximately 50 to 80 degrees, which performs high-pressure rinsing on the surface of the tire under test to remove surface mud and shallow foreign objects. The pressure roller 56 inside the fourth stroke frame 60 is driven by the fifth hydraulic rod 61 to squeeze the tire under test, and the ball bearings 59 squeeze the sides of the tread grooves to widen the gaps in the tread grooves. The intermittent gear 63 drives the scraper 58 to scrape laterally and stepwise to remove deep foreign objects in the tread grooves.

[0067] The cleaning waste liquid flows into the V-shaped collection tank via the guide surface 26, is filtered through the discharge tank 25, and is collected by the tank frame 7 to avoid foreign matter residue. Foreign matter in the tread grooves of the inspected tire is removed through various methods such as high-pressure water jet impact, mechanical squeezing to widen the grooves, and scraping and peeling, eliminating interference factors in the inspection.

[0068] Example 3:

[0069] like Figure 11 A pump shaft 39 is rotatably mounted inside the water flow cleaning assembly 6. An impeller 65 is rotatably mounted inside the water flow cleaning assembly 6 and sleeved on the outer wall of the pump shaft 39. A driven wheel 36 is sleeved on the outer wall of the pump shaft 39. A drive wheel 37 with a radius larger than that of the driven wheel 36 is sleeved on one end of the brush roller 31 located in front of the detection table 2. The driven wheel 36 and the drive wheel 37 are connected by a belt 38.

[0070] In this embodiment, the drive wheel 37 is sleeved on one end of the brush roller 31 located in front of the detection table 2. The drive wheel 37 has a larger diameter and rotates synchronously with the brush roller 31. The driven wheel 36 has a smaller diameter and is sleeved on the outer wall of the pump shaft 39. The power of the drive wheel 37 comes only from the first motor 30. When the first motor 30 drives the brush roller 31 to rotate, the drive wheel 37 rotates synchronously with the brush roller 31. The power is transmitted to the driven wheel 36 through the belt 38. There is no need to configure a separate power for the water flow cleaning assembly 6.

[0071] Example 4:

[0072] like Figure 12 An angle sensor 40 is installed at the lower end of the testing platform 2.

[0073] The lower end of the testing platform 2 is provided with two symmetrically distributed first bearing seats 41, and a first rotating shaft 43 is rotatably installed between the two first bearing seats 41. A first rotating seat 42 is sleeved on the outer wall of the first rotating shaft 43.

[0074] Two symmetrically distributed second bearing seats 46 are provided on one side of the upper end of the frame 1. A second rotating shaft 47 is rotatably installed inside the two second bearing seats 46. A second rotating seat 45 is sleeved on the outer wall of the second rotating shaft 47. The first rotating seat 42 and the second rotating seat 45 are connected by a second electric push rod 44.

[0075] The lower end of the testing platform 2 is provided with two symmetrically distributed third rotating seats 50, and the upper end of the frame 1 is provided with two symmetrically distributed third bearing seats 48; a third rotating shaft 49 is provided between the two third rotating seats 50, and the two ends of the third rotating shaft 49 are respectively rotatably disposed in the two third bearing seats 48.

[0076] Both ends of the second electric push rod 44 are rotatably supported, and together with the rotatably supported detection table 2, the tilt angle of the detection table 2 with the third rotating shaft 49 as the axis is adjusted.

[0077] In this embodiment, the tilt angle adjustment of the testing platform 2 is used for testing the parking brake performance of the forklift. The third rotating seat 50 at the lower end of the testing platform 2 and the third bearing seat 48 at the upper end of the frame 1 form a rotating pair through the third rotating shaft 49, providing the testing platform 2 with an inclined rotation axis. The axis of the third rotating shaft 49 is parallel to the long side of the testing platform 2. The first bearing seat 41, the first rotating shaft 43, and the first rotating seat 42 at the lower end of the testing platform 2 constitute a rotating pair. The second bearing seat 46, the second rotating shaft 47, and the second rotating seat 45 at the upper end of the frame 1 constitute a rotating pair. The second rotating seat 45 is connected to the second electric push rod 44, forming a support structure composed of the frame 1, the second rotating seat 45, and the second electric push rod 44.

[0078] When the second electric push rod 44 extends or retracts, it drives the detection table 2 to rotate around the third rotating shaft 49 via the first rotating seat 42 and the first rotating shaft 43, thereby adjusting the tilt angle of the detection table 2. The angular displacement sensors at both ends of the third rotating shaft 49 are linked with the tilt sensor 40 to collect the rotation angle in real time. The data is transmitted to the PLC controller 3, which adjusts the extension or retraction of the second electric push rod 44 according to the target slope, forming a closed-loop control of rotational support, linear drive, and angle feedback.

[0079] Precise control is achieved through the following process in adjusting the tilt angle of the testing platform 2: The operator sets the target slope via the PLC controller 3, which is converted into the required rotation angle of the testing platform 2. The second electric push rod 44 receives the control signal, and its piston rod extends, pushing the testing platform 2 upward around the third rotating shaft 49 via the first rotating seat 42. Simultaneously, the second rotating seat 45 rotates around the second rotating shaft 47 to adapt to the angle change of the second electric push rod 44. The angular displacement sensors at both ends of the third rotating shaft 49 collect the rotation angle of the third rotating shaft 49 in real time, convert it into a slope value, and feed it back to the PLC controller 3 for comparison with the target slope value. If the actual slope is greater than or equal to the target slope value but exceeds the set threshold, the PLC controller 3 adjusts the extension / retraction of the second electric push rod 44 until the actual slope is less than or equal to the target slope value but exceeds the set threshold, at which point the drive stops.

[0080] Once the slope stabilizes, the tilt sensor 40 continuously monitors, providing a stable benchmark for testing the parking brake performance of the forklift. This system, through its designed mechanical structure and precise feedback electronic control system, has the advantages of strong load capacity, high adjustment accuracy, and stable operation. It can meet the parking brake testing needs of forklifts under different slopes and provide reliable environmental simulation support for the safety assessment of forklift parking brakes.

[0081] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0082] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A forklift braking performance testing device, comprising a frame, a testing platform, and a water flow cleaning assembly, characterized in that: The testing platform has a first bottom groove and a second bottom groove inside; the water flow cleaning component is provided at the front end of the testing platform. The first bottom groove is provided with a second hydraulic rod, the telescopic end of the second hydraulic rod is provided with a first stroke frame, and two symmetrically distributed first idlers are rotatably installed inside the first stroke frame. The shaft end of the first idler is provided with a wheel speed sensor. The second bottom groove is provided with a third hydraulic rod, the upper end of the third hydraulic rod is provided with a second stroke frame, two symmetrically distributed second support rollers are rotatably installed inside the second stroke frame, the upper end of the second stroke frame is provided with a sixth hydraulic rod, the upper end of the sixth hydraulic rod is provided with a center frame, the center frame is provided with a fifth hydraulic rod, the upper end of the fifth hydraulic rod is provided with a fourth stroke frame, the fourth stroke frame is provided with a pressure roller, and the outer wall of the pressure roller is rotatably installed with multiple equidistantly distributed ball bearings; A grid is provided above the central frame, and side grooves are equally spaced inside the upper end of the central frame. A scraper is provided inside the side groove in the grid. The scraper is misaligned with the ball bearing. A connecting frame is provided on the grid. A fourth hydraulic rod is provided on the outer wall of the central frame. A third stroke frame is provided at the upper end of the fourth hydraulic rod. Guide rods that are slidably installed inside the third stroke frame are provided at both ends of the connecting frame. The upper end of the third stroke frame is equipped with a second motor, and one end of the connecting frame is equipped with a rectangular frame. The inner walls of the upper and lower sides of the rectangular frame are equipped with toothed plates. The output end of the second motor is equipped with an intermittent gear. The intermittent gear always meshes with only one toothed plate on the upper or lower side of the rectangular frame. A horizontally distributed storage groove is opened inside one side of the upper end of the second bottom groove. The inner wall of the storage groove is equipped with a first hydraulic rod, and the telescopic end of the first hydraulic rod is equipped with an extension plate.

2. The forklift braking performance testing device according to claim 1, characterized in that: A first motor is installed at the rear end of the testing platform. A brush roller is rotatably mounted inside a second bottom groove at the output end of the first motor. Multiple cleaning brushes are arranged in a circular array on the outer wall of the brush roller. A pump shaft is rotatably mounted inside the water flow cleaning assembly. An impeller is rotatably mounted inside the water flow cleaning assembly and sleeved on the outer wall of the pump shaft. A driven wheel is sleeved on the outer wall of the pump shaft. A drive wheel with a radius larger than that of the driven wheel is sleeved on the front end of the brush roller on the testing platform. The driven wheel and the drive wheel are connected by a belt.

3. The forklift braking performance testing device according to claim 1, characterized in that: The water flow cleaning assembly includes cleaning pipes. Cleaning pipes are provided on the inner walls of both sides of the second bottom tank. Multiple cleaning nozzles are provided on each cleaning pipe at equal intervals. A pressure pump is provided at the upper end of the water flow cleaning assembly. The output end of the pressure pump is connected to two cleaning pipes on both sides of the second bottom tank through a U-shaped pipe. The output end of the water flow cleaning assembly is provided with a delivery pipe connected to the input end of the pressure pump.

4. The forklift braking performance testing device according to claim 1, characterized in that: The lower inner wall of the second bottom tank is provided with a flow guide surface, and the lower inner wall of the second bottom tank is provided with a discharge groove that penetrates the lower end of the detection platform. The upper end of the frame is provided with a slot frame located below the discharge groove.

5. The forklift braking performance testing device according to claim 1, characterized in that: The upper end of the testing platform is provided with two symmetrically distributed first electric push rods. Each first electric push rod has a guide plate at its telescopic end. The two guide plates are symmetrically distributed on both sides above the second bottom groove and are flared at one end. Each guide plate has multiple equidistantly distributed guide rollers rotatably installed inside it.

6. The forklift braking performance testing device according to claim 1, characterized in that: The frame is provided with guide platforms at both ends, the detection platform is provided with ramps at both ends, the two conveying ramps are located between the two guide platforms, the frame and the upper end of the ramps are provided with two parallel guide grooves, and a center platform connected to the first bottom groove is provided between the two first idlers.

7. The forklift braking performance testing device according to claim 1, characterized in that: The lower end of the testing platform is provided with two symmetrically distributed first bearing seats, and a first rotating shaft is rotatably installed between the two first bearing seats. A first rotating seat is sleeved on the outer wall of the first rotating shaft. Two symmetrically distributed second bearing seats are provided on one side of the upper end of the frame. A second rotating shaft is rotatably installed inside the two second bearing seats. A second rotating seat is sleeved on the outer wall of the second rotating shaft. The first rotating seat and the second rotating seat are connected by a second electric push rod. The lower end of the testing platform is provided with two symmetrically distributed third rotating seats, and the upper end of the frame is provided with two symmetrically distributed third bearing seats; a third rotating shaft is provided between the two third rotating seats, and the two ends of the third rotating shaft are respectively rotatably disposed in the two third bearing seats.

8. The forklift braking performance testing device according to claim 1, characterized in that: An infrared sensor is installed at the upper end of the testing platform, a PLC controller is installed at the upper end of the frame, and an angle sensor is installed at the lower end of the testing platform.

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