Loader parking tension detection device

Abstract

The invention relates to the technical field of vehicle detection, and particularly discloses a loader parking tension detection device which comprises a tension meter for detecting parking tension, a bearing table for placing the tension meter is arranged on the outer surface of the lower end of the tension meter, and the bearing table is designed to be of a circular structure. An adjusting part for controlling the tension meter to move around the bearing table is arranged between the tension meter and the bearing table and is used for detecting tension at different angles; a sliding rail and a sliding groove are arranged on the surface of the bearing table and driven by a first motor arranged at the bottom of the tension meter to change the position, tension borne by a vehicle during parking can be tested in different directions, the angle of the bearing table is changed under the cooperation of four sets of hydraulic telescopic rods and limiting assemblies, and the stress state of the vehicle on a ramp is simulated. The friction force of the wheels to the ground is broken through along with the increase of the gradient, the maximum parking angle of the vehicle is detected, meanwhile, under the mutual cooperation of the multiple sets of resisting plates and the connecting bases, the stability when the vehicle begins to slide is improved, and the detection safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle detection, in particular to a parking tension detection device for a loader. Background Art

[0002] The parking force test of a vehicle is a key step in ensuring safe driving of the vehicle. It involves evaluating the performance of the parking brake system of the vehicle. Generally, a dynamometer is used inside the inspection station for testing. The bottom corner of the dynamometer is fixed to the ground with screws. The end of the tension rod is connected to a sensor and connected to the vehicle through a traction rope. The height of the tension rod is controlled by a limiter. The traction rope is pulled by the tension rod to detect the tension applied to the vehicle in parking mode.

[0003] Engineering vehicles such as loaders have a more complex environment, involving earthwork and slope operations. Existing dynamometers are mostly fixed directly on the ground, and the detection performance is too single. The detection capability is not enough to reflect the state of the loader on the slope. For this reason, we propose a loader parking tension detection device. Summary of the invention

[0004] The object of the present invention is to provide a parking tension detection device for a loader to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a parking tension detection device for a loader, comprising a tension meter for detecting the parking tension;

[0006] The outer surface of the lower end of the tensile gauge is provided with a bearing platform for placing the tensile gauge, the bearing platform is designed as a circular structure, and an adjustment part for controlling the movement of the tensile gauge around the bearing platform is provided between the tensile gauge and the bearing platform, so as to detect tension at different angles;

[0007] The lower end of the support platform is provided with four groups of hydraulic lifting rods that can lift the periphery of the support platform. The distances between the four groups of hydraulic lifting rods and the center of the circle are equal, and the distances between the four groups of hydraulic lifting rods are equal. A limiting component that limits the height of the center of the support platform is provided at the center of the circle at the lower end of the support platform. The limiting component and the four groups of hydraulic lifting rods cooperate to control the angle of the support platform.

[0008] Among them, the limiting component includes a bearing seat, a ball groove is opened on the outer surface of the lower end of the bearing seat, a rotating ball is rotatably connected inside the ball groove, and a support rod for support is fixedly connected to the end of the rotating ball away from the bearing platform, and three-fifths of the diameter of the rotating ball is located inside the ball groove.

[0009] Among them, a limiting groove is opened on the annular outer surface of the rotating ball, and a limiting block is slidably arranged inside the limiting groove. The limiting block is fixedly connected to the inner surface of the ball groove. There are four groups of limiting grooves, which correspond to hydraulic lifting rods respectively. The position where the hydraulic lifting rod contacts the supporting platform is rotatably connected to a rotating wheel via a rotating shaft.

[0010] Among them, a movable connecting seat is provided on the upper end of the supporting platform, and a displacement groove is opened at a position corresponding to the upper end of the supporting platform and the connecting seat. A displacement block is slidably connected inside the displacement groove and fixedly connected to the connecting seat. The displacement groove is designed as an L-shaped structure as a whole, and its cross-section is designed as a T-shaped structure. The displacement block and the displacement groove match each other, and a bottom plate that can move linearly is provided at the end of the connecting seat, and a resisting plate for tightening the wheel is provided on the surface of the bottom plate.

[0011] Among them, the resistance plate is located on both sides of the base plate, and the outer surface of the upper end of the base plate is fixedly connected to a motor three which can control the distance between the resistance plate and the base plate, and the output end of the motor three is fixedly connected to a bidirectional threaded rod one with a positive and negative thread design, and the surface of the threaded rod one is threadedly connected to a connecting block one, and the end of the connecting block one close to the resistance plate is rotatably connected to a folding plate through a rotating shaft, and the folded part of the folding plate is rotatably connected to the resistance plate through a rotating shaft.

[0012] Among them, the outer surface of the upper end of the connecting seat is fixedly connected to a motor 2 for controlling the distance between the base plate and the connecting seat, the output end of the motor 2 is fixedly connected to a threaded rod 2, the annular outer surface of the threaded rod 2 is threadedly connected to a connecting block 2, one end of the connecting block 2 is rotatably connected to a traction rod via a rotating shaft, and the end of the traction rod away from the connecting seat is rotatably connected to the base plate via a rotating shaft.

[0013] Among them, a telescopic rod is provided between the resisting plate and the base plate to guide the resisting plate, and a guide groove for limiting the movement trajectory of the base plate is opened on the side of the base plate close to the connecting seat. A matching guide rod is slidably connected inside the guide groove, and the guide rod is fixedly connected to the connecting seat.

[0014] Among them, the adjustment part includes a slide rail, which is fixedly connected to the outer surface of the upper end of the support platform, and a slide groove matching the slide rail is opened at a corresponding position of the outer surface of the lower end of the dynamometer and the slide rail. The outer surface of the lower end of the dynamometer is fixedly connected to motor 1, and the output end of motor 1 is fixedly connected to a gear, and the corresponding position of the support platform and the gear is opened with a tooth groove meshing with it.

[0015] The present invention has at least the following beneficial effects:

[0016] By setting slide rails and slide grooves on the surface of the load-bearing platform, the motor installed at the bottom of the dynamometer drives it to change its position, and then the pulling force on the vehicle when parking can be tested in different directions. With the cooperation of four sets of hydraulic telescopic rods and limiting components, the angle of the load-bearing platform is changed to simulate the force state of the vehicle on the ramp. As the slope increases, the friction between the wheels and the ground is broken through, and the maximum angle at which the vehicle can be parked is detected, enriching the detection data. At the same time, with the cooperation of multiple sets of resistance plates and connecting seats, the stability of the vehicle when it starts to slide is increased, and the safety of the detection is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the wheel and the resistance plate of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the tensile meter of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the bottom of the carrying platform of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the limiting groove and the limiting block of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the motor three and the resistance plate of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the bottom plate of the present invention;

[0024] Figure 8 It is a schematic structural diagram of the threaded rod 1 and the folding plate of the present invention.

[0025] In the figure: 1, bearing platform; 2, adjusting part; 20, dynamometer; 21, slide rail; 22, slide groove; 23, motor one; 24, gear; 25, tooth groove; 3, limiting component; 30, hydraulic lifting rod; 31, bearing seat; 32, rotating ball; 33, supporting rod; 34, limiting groove; 35, limiting block; 36, ball groove; 37, rotating wheel; 40, displacement groove; 41, displacement block; 42, resisting plate; 43, connecting seat; 44, guide rod; 45, guide groove; 46, threaded rod one; 47, connecting block one; 48, folding plate; 49, telescopic rod; 50, bottom plate; 51, traction rod; 52, connecting block two; 53, motor two; 54, motor three; 55, threaded rod two (55). DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 , the present invention provides a technical solution: a parking tension detection device for a loader, comprising a tension meter 20 for detecting the parking tension;

[0028] The outer surface of the lower end of the tensile gauge 20 is provided with a bearing platform 1 for placing the tensile gauge 20. The bearing platform 1 is designed as a circular structure. An adjusting part 2 for controlling the movement of the tensile gauge 20 around the bearing platform 1 is provided between the tensile gauge 20 and the bearing platform 1, so as to detect tension at different angles and improve the reliability of data detection.

[0029] The lower end of the load-bearing platform 1 is provided with four groups of hydraulic lifting rods 30 for lifting the periphery of the load-bearing platform 1. The distances between the four groups of hydraulic lifting rods 30 and the center of the circle are equal, and the distances between the four groups of hydraulic lifting rods 30 are equal. A limiting component 3 for limiting the height of the center of the load-bearing platform 1 is provided at the center of the circle at the lower end of the load-bearing platform 1. The limiting component 3 and the four groups of hydraulic lifting rods 30 cooperate to control the angle of the load-bearing platform 1 and detect the state of the vehicle under different slopes.

[0030] The limiting component 3 includes a bearing seat 31, a ball groove 36 is formed on the outer surface of the lower end of the bearing seat 31, a rotating ball 32 is rotatably connected inside the ball groove 36, and a support rod 33 is fixedly connected to the end of the rotating ball 32 away from the bearing platform 1, and three-fifths of the diameter of the rotating ball 32 is located inside the ball groove 36, which increases the stability of the rotating ball 32. After the user drives the wheeled loader to the center position of the bearing platform 1, the dynamometer 20 is connected through a traction rope, and the four groups of hydraulic lifting rods 30 are controlled to cooperate so that the bearing platform 1 has an angle simulating a ramp. When the vehicle tire changes from static friction to dynamic friction, the dynamometer 20 displays a value and tightens the vehicle at the same time, and then the hydraulic lifting rod 30 is reset. Since the application environment of the loader is relatively diverse, various ramps are simulated by the above structure, and the maximum ramp limit of vehicle braking is measured to enrich the detection data.

[0031] A limiting groove 34 is formed on the annular outer surface of the rotating ball 32, and a limiting block 35 is slidably disposed inside the limiting groove 34. The limiting block 35 is fixedly connected to the inner surface of the ball groove 36. There are four groups of limiting grooves 34, which correspond to the hydraulic lifting rods 30 respectively. The position where the hydraulic lifting rods 30 contact the supporting platform 1 is rotatably connected to a rotating wheel 37 via a rotating shaft. In order to increase the stability of the entire device, the limiting grooves 34 and the limiting blocks 35 are used to ensure that the inclination angle of the supporting platform 1 can only be along the direction of the limiting grooves 34, and correspond to four groups of hydraulic lifting rods 30.

[0032] A movable connecting seat 43 is provided at the upper end of the supporting platform 1, and a displacement groove 40 is opened at a position corresponding to the upper end of the supporting platform 1 and the connecting seat 43. A displacement block 41 is slidably connected inside the displacement groove 40 and fixedly connected to the connecting seat 43. The displacement groove 40 is designed as an L-shaped structure as a whole, and its cross-section is designed as a T-shaped structure. The displacement block 41 and the displacement groove 40 match each other. A linearly movable bottom plate 50 is provided at the end of the connecting seat 43, and a resisting plate 42 for tightening the wheel is provided on the surface of the bottom plate 50. When the vehicle starts to slide, it is unclear which of the four sets of tires will slide first. The resisting plate 42 is used to impose certain restrictions on the vehicle and the connecting seat 43. The vehicle will only slide when all four sets of tires lose their grip, and the sliding direction is consistent with the sliding direction of the displacement block 41, thereby increasing the stability of the device.

[0033] The resisting plate 42 is located on both sides of the base plate 50, and the outer surface of the upper end of the base plate 50 is fixedly connected to a motor 3 54 that can control the distance between the resisting plate 42 and the base plate 50, and the output end of the motor 3 54 is fixedly connected to a bidirectional threaded rod 46 with a positive and negative thread design, and the surface of the threaded rod 46 is threadedly connected to a connecting block 47, and the connecting block 47 is rotatably connected to a folding plate 48 at one end close to the resisting plate 42 through a rotating shaft. There are two connecting blocks 47, and the other is rotatably connected to the other end of the folding plate 48 and is threadedly connected to the other end of the threaded rod 46. The folded part of the folding plate 48 is rotatably connected to the resisting plate 42 through a rotating shaft. The vehicle stops above the connecting seat 43, and then the user visually controls the movement of the base plate 50 to align the resisting plate 42 with the vehicle tire, and controls the rotation of the threaded rod 46 through the motor 3 54. The two ends of the folding plate 48 move simultaneously under the drive of the two groups of connecting blocks 47, and the resisting plate 42 is attached to the inner side of the wheel to complete the restricted positioning of the vehicle.

[0034] The outer surface of the upper end of the connecting seat 43 is fixedly connected with a motor 53 for controlling the distance between the base plate 50 and the connecting seat 43, and the output end of the motor 53 is fixedly connected with a threaded rod 55, and the annular outer surface of the threaded rod 55 is threadedly connected with a connecting block 52, one end of the connecting block 52 is rotatably connected to a traction rod 51 via a rotating shaft, and the end of the traction rod 51 away from the connecting seat 43 is rotatably connected to the base plate 50 via a rotating shaft. The motor 53 drives the threaded rod 55 to rotate to make the connecting block 52 slide, thereby driving the traction rod 51 to change its angle, thereby driving the base plate 50 to move horizontally. The number of motors 53 is the same as that of the base plate 50, both in two groups, and each is controlled separately.

[0035] A telescopic rod 49 is provided between the resisting plate 42 and the base plate 50 for guiding the resisting plate 42. A guide groove 45 for limiting the movement trajectory of the base plate 50 is provided on one side of the base plate 50 close to the connecting seat 43. A matching guide rod 44 is slidably connected inside the guide groove 45. The guide rod 44 is fixedly connected to the connecting seat 43 to increase the stability of the movement of the support plate and the base plate 50.

[0036] The adjusting part 2 includes a slide rail 21, which is fixedly connected to the outer surface of the upper end of the support platform. A slide groove 22 matching the slide rail 21 is provided on the outer surface of the lower end of the dynamometer 20 at a position corresponding to the slide rail 21. A motor 23 is fixedly connected to the outer surface of the lower end of the dynamometer 20. A gear 24 is fixedly connected to the output end of the motor 23. A tooth groove 25 meshing with the gear 24 is provided at a position corresponding to the support platform 1. The user buckles the traction rope on the surface of the vehicle and controls the dynamometer 20 to apply traction to the vehicle to measure the tension required for the vehicle in the parking state. The dynamometer 20 can move along the circular support platform 1 through the cooperation of the motor 23 and the gear 24, and through the cooperation of the slide rail 21 and the slide groove 22, thereby changing the direction of the dynamometer 20 to test the tension of the vehicle in different directions. Through the movement of the dynamometer 20, the stability of the vehicle can be increased through the traction rope when the vehicle is tested on a slope, thereby improving safety.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parking tension detection device for a loader, comprising a tension meter (20) for detecting the parking tension; Features: The outer surface of the lower end of the tensile gauge (20) is provided with a support platform (1) for placing the tensile gauge (20), the support platform (1) is designed as a circular structure, and an adjustment part (2) for controlling the movement of the tensile gauge (20) around the support platform (1) is provided between the tensile gauge (20) and the support platform (1), so as to detect tension at different angles; The lower end of the support platform (1) is provided with four groups of hydraulic lifting rods (30) that can lift the periphery of the support platform (1), the distances between the four groups of hydraulic lifting rods (30) and the center of the circle are equal, and the distances between the four groups of hydraulic lifting rods (30) are equal. A limiting component (3) for limiting the height of the center of the support platform (1) is provided at the center of the circle at the lower end of the support platform (1), and the limiting component (3) and the four groups of hydraulic lifting rods (30) cooperate to control the angle of the support platform (1).

2. The parking tension detection device for a loader according to claim 1, characterized in that: The limiting assembly (3) comprises a bearing seat (31), a ball groove (36) is provided on the outer surface of the lower end of the bearing seat (31), a rotating ball (32) is rotatably connected inside the ball groove (36), and a supporting rod (33) is fixedly connected to one end of the rotating ball (32) away from the bearing platform (1), and three fifths of the diameter of the rotating ball (32) is located inside the ball groove (36).

3. The parking tension detection device for a loader according to claim 2, characterized in that: The annular outer surface of the rotating ball (32) is provided with a limiting groove (34), a limiting block (35) is slidably disposed inside the limiting groove (34), and the limiting block (35) is fixedly connected to the inner surface of the ball groove (36). The limiting grooves (34) are provided in four groups, and correspond to the hydraulic lifting rods (30) respectively. The position where the hydraulic lifting rod (30) contacts the bearing platform (1) is rotatably connected to a rotating wheel (37) via a rotating shaft.

4. The parking tension detection device for a loader according to claim 2, characterized in that: A movable connecting seat (43) is provided at the upper end of the bearing platform (1); a displacement groove (40) is provided at a position corresponding to the connecting seat (43) at the upper end of the bearing platform (1); a displacement block (41) is slidably connected inside the displacement groove (40) and fixedly connected to the connecting seat (43); the displacement groove (40) is designed as an L-shaped structure as a whole, and its cross section is designed as a T-shaped structure; the displacement block (41) and the displacement groove (40) match each other; a bottom plate (50) capable of linear movement is provided at the end of the connecting seat (43); and a resisting plate (42) for tightening the wheel is provided on the surface of the bottom plate (50).

5. The parking tension detection device for a loader according to claim 4, characterized in that: The resisting plate (42) is located on both sides of the bottom plate (50), and the outer surface of the upper end of the bottom plate (50) is fixedly connected with a motor three (54) that can control the distance between the resisting plate (42) and the bottom plate (50), and the output end of the motor three (54) is fixedly connected with a bidirectional threaded rod one (46) with a positive and negative thread design, and the surface of the threaded rod one (46) is threadedly connected with a connecting block one (47), and the end of the connecting block one (47) close to the resisting plate (42) is rotatably connected to a folding plate (48) through a rotating shaft, and the folded part of the folding plate (48) is rotatably connected to the resisting plate (42) through a rotating shaft.

6. The parking tension detection device for a loader according to claim 5, characterized in that: The outer surface of the upper end of the connecting seat (43) is fixedly connected with a second motor (53) for controlling the distance between the base plate (50) and the connecting seat (43); the output end of the second motor (53) is fixedly connected with a second threaded rod (55); the annular outer surface of the second threaded rod (55) is threadedly connected with a second connecting block (52); one end of the second connecting block (52) is rotatably connected with a traction rod (51) via a rotating shaft; and the end of the traction rod (51) away from the connecting seat (43) is rotatably connected with the base plate (50) via a rotating shaft.

7. The parking tension detection device for a loader according to claim 6, characterized in that: A telescopic rod (49) for guiding the resisting plate (42) is provided between the resisting plate (42) and the bottom plate (50); a guide groove (45) for limiting the movement trajectory of the bottom plate (50) is provided on one side of the bottom plate (50) close to the connecting seat (43); a matching guide rod (44) is slidably connected inside the guide groove (45); and the guide rod (44) is fixedly connected to the connecting seat (43).

8. The parking tension detection device for a loader according to claim 1, characterized in that: The adjusting part (2) comprises a slide rail (21), wherein the slide rail (21) is fixedly connected to the upper outer surface of the support platform, a slide groove (22) matching the slide rail (21) is provided on the lower outer surface of the dynamometer (20) at a position corresponding to the slide rail (21), a motor 1 (23) is fixedly connected to the lower outer surface of the dynamometer (20), a gear (24) is fixedly connected to the output end of the motor 1 (23), and a tooth groove (25) meshing with the gear (24) is provided at a position corresponding to the support platform (1) and the gear (24).

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