Protection device for control stability test of special wheeled vehicle

Abstract

The utility model discloses a special wheeled vehicle handling stability test protection device which comprises an adjusting cross beam, a vehicle body connecting seat, an angle adjusting mechanism, a rotating support arm and a nylon support. The adjusting cross beam comprises a connecting rod and sliding sleeve rods, and the adjusting cross beam can be matched with the interface distance of various types of vehicles by adjusting the spacing distance of the two sets of sliding sleeve rods and locking the two sets of sliding sleeve rods. The vehicle body connecting base is used for connecting the adjusting beam and a vehicle. And a nylon support is fixedly arranged at the bottom of the other end of the rotary support arm. The two ends of the angle adjusting machine are hinged to the adjusting cross beam and the rotary supporting arm respectively, and the included angle between the rotary supporting arm and the adjusting cross beam is adjusted by adjusting the stretching length of the angle adjusting machine so that the terrain clearance of the nylon support can be adjusted. According to the test protection device, the vehicle body interface distance and the ground clearance of the supporting structure can be freely adjusted according to the vehicle type, and the test protection device is suitable for special wheeled vehicles with large mass, high gravity center and high ground clearance.

Description

Technical Field

[0001] The embodiments of the present utility model belong to the technical field of vehicle experiment protection devices, and more specifically, relate to a protection device for the handling stability test of special wheeled vehicles. Background Art

[0002] Special wheeled vehicles usually carry important tactical missions and need to perform difficult maneuvers under complex road conditions. Handling stability not only measures the convenience of operating special vehicles but also is an important indicator for evaluating their extreme handling performance in complex environments. Therefore, the handling stability test is an important part of the special wheeled vehicle testing field.

[0003] The national automotive industry standards for handling stability test methods stipulate six tests, including the slalom test, steering transient response test (step input of steering wheel angle, pulse input of steering wheel angle), steering returnability test, steering ease test, steady-state turning test, and handling stability test in the central area of the steering wheel. Among them, the slalom test and the steering transient response test have a certain risk of rollover, especially for special wheeled vehicles with a larger mass and a higher center of mass. Even experienced drivers cannot perform extreme operations without protective measures. The existing test conditions cannot effectively test the extreme handling performance of special wheeled vehicles, and the test results cannot effectively reflect the performance baseline of special wheeled vehicles.

[0004] To ensure the effective development of the handling stability and other extreme tests of special wheeled vehicles, find out the performance baseline of vehicle equipment, and improve the overall vehicle performance, there is an urgent need for a handling stability test protection device suitable for a series of special wheeled vehicle models. Summary of the Invention

[0005] Aiming at the problem that the existing protection device cannot ensure the effective development of vehicle handling stability and other extreme tests, the present utility model provides a protection device for the handling stability test of special wheeled vehicles to solve such problems.

[0006] To achieve the above object, the present utility model provides a protection device for the handling stability test of special wheeled vehicles, including an adjustment cross beam, the two ends of which are respectively hinged to the rotating arms; a vehicle body connection seat for fixing the adjustment cross beam to the vehicle body; an angle adjustment mechanism with two ends respectively hinged to the adjustment cross beam and the rotating arms, which adjusts the included angle between the rotating arm and the adjustment cross beam by adjusting its own extension length; and a nylon support fixedly arranged at the bottom of the other end of the rotating arm.

[0007] Further, the angle adjustment mechanism includes a screw sleeve, a first adjustment screw rod, and a second adjustment screw rod. The two ends of the inner wall of the screw sleeve are respectively provided with left - hand and right - hand threads; the first adjustment screw rod and the second adjustment screw rod are respectively in threaded connection with the screw sleeve; the other end of the first adjustment screw rod is hinged to the adjustment cross beam, and the other end of the second adjustment screw rod is hinged to the rotating support arm.

[0008] Further, the adjustment cross beam includes a connecting rod, a sliding sleeve rod, and a locking plate.

[0009] Further, the connecting rod is of a square rod structure and is made of aluminum alloy material; there are two groups of sliding sleeve rods, which are of a square tube structure and are adapted to the size of the connecting support. The two groups of sliding sleeve rods are symmetrically sleeved at both ends of the connecting rod; the locking plate is fixedly arranged on the outer periphery of the sliding sleeve rod by welding. There are multiple groups of screw holes on it. The sliding sleeve rod is locked by passing a screw through the locking plate and the sliding sleeve rod in sequence and abutting against the outer periphery of the connecting rod.

[0010] Further, the vehicle body connecting seat includes a connecting square tube, a bottom support plate, and a second reinforcing plate; a through hole is provided on the connecting square tube, and this through hole corresponds to the threaded hole on the vehicle body interface. Bolts are used to pass through the adjustment cross beam and the connecting square tube in sequence and then be threadedly connected to the threaded hole on the vehicle body interface, so as to fix the adjustment cross beam on the vehicle body interface; the bottom support plate is vertically fixed to the front end of the connecting square tube by welding to lift the bottom of the adjustment cross beam. There are multiple through holes on it, and bolts are used to pass through the through holes and be threadedly connected to the bottom of the adjustment cross beam, so as to fix the adjustment cross beam on the bottom support plate; the second reinforcing plate is a wedge - shaped plate, its top is fixedly connected to the bottom of the bottom support plate, and its side is fixedly connected to the front end of the connecting square tube.

[0011] Further, the nylon support is of a hemispherical structure, and its top is fixedly connected to the other end of the rotating support arm through a connecting cushion plate.

[0012] Further, a third lifting lug is fixedly arranged at one end of the rotating support arm, and the third lifting lug is hinged to the first ear seat provided at the end of the adjustment cross beam through a pin.

[0013] Further, a limit pin hole is also provided on the first ear seat, and an arc - shaped groove is provided on the third lifting lug. The rotation angle between the rotating support arm and the adjustment cross beam is limited by inserting a rotating pin into the limit pin hole and the arc - shaped groove in sequence.

[0014] Generally speaking, compared with the prior art through the above - mentioned technical solution conceived by the present utility model, the following beneficial effects can be obtained:

[0015] (1) The test protection device of the present utility model adopts a symmetrical split design, has a simple structure, is convenient for installation, use, and storage, is convenient for replacement and maintenance after damage, and greatly reduces the manufacturing and use costs.

[0016] (2) The test protection device of the present utility model has a mature process, a large overall structural strength, a light weight, and little influence on the test results after installation. It is applicable to special wheeled off-road vehicles within 10 tons.

[0017] (3) For the test protection device of the present utility model, the distance between the vehicle body interfaces and the ground clearance of the support structure can be freely adjusted according to the vehicle type. The adjustment range is large, the adjustment method is ingenious, and the operation is simple. It is perfectly applicable to special wheeled vehicles with a large mass, a high center of gravity, and a high ground clearance, and has wide versatility. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a test protection device for the handling stability of a special wheeled vehicle in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the adjustment cross beam in an embodiment of the present utility model;

[0020] Figure 3 It is a schematic structural diagram of the vehicle body connection seat in an embodiment of the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the angle adjustment mechanism in an embodiment of the present utility model;

[0022] Figure 5 It is a working schematic diagram of the angle adjustment mechanism adjusting the flipping angle in an embodiment of the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the rotating support arm in an embodiment of the present utility model.

[0024] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - adjustment cross beam, 11 - connecting rod, 12 - sliding sleeve rod, 13 - locking plate, 14 - first reinforcing plate, 15 - connecting support, 151 - first pin hole, 152 - limit pin hole, 16 - first ear seat, 2 - vehicle body connection seat, 21 - connecting square tube, 22 - bottom support plate, 23 - second reinforcing plate, 3 - angle adjustment mechanism, 301 - screw sleeve, 302 - first adjusting screw rod, 303 - second adjusting screw rod, 304 - first lifting ear, 305 - second lifting ear, 4 - rotating support arm, 41 - arm rod, 42 - second ear seat, 43 - third lifting ear, 431 - second pin hole, 432 - arc groove, 44 - connecting cushion plate, 5 - nylon support, 6 - pin, 7 - rotating pin. Detailed Embodiment

[0025] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] As Figure 1-6 shown, the present utility model provides a special wheeled vehicle handling stability test protection device, which includes an adjustment cross beam 1, a vehicle body connection seat 2, an angle adjustment mechanism 3, a rotating support arm 4 and a nylon support 5. The adjustment cross beam 1 includes a connecting rod 11 and sliding sleeve rods 12 sleeved at both ends of the connecting rod 11. By adjusting the distance between the two groups of sliding sleeve rods 12 and locking them, the adjustment cross beam 1 can adapt to the interface spacing of various types of vehicles. The vehicle body connection seat 2 is used to connect the adjustment cross beam 1 and the vehicle body. After passing through the adjustment cross beam 1 and the vehicle body connection seat 2 with bolts in sequence, the adjustment cross beam 1 is fixed on the vehicle body. There are two groups of rotating support arms 4, which are respectively hinged to the ends of the adjustment cross beam 1, and a nylon support 5 is fixedly arranged at the bottom of the other end. Both ends of the angle adjustment mechanism 3 are respectively hinged to the adjustment cross beam 1 and the rotating support arm 4. By adjusting the extension length of the angle adjustment mechanism 3, the included angle between the rotating support arm 4 and the adjustment cross beam 1 is adjusted, so as to adjust the ground clearance of the nylon support 5, thereby realizing the adjustment of the flipping angle of the protection device. The test protection device of the present utility model can freely adjust the vehicle body interface spacing and the ground clearance of the support structure according to the vehicle type, with a large adjustment range, a delicate adjustment method, simple operation, and is perfectly applicable to special wheeled vehicles with large mass, high center of gravity and high ground clearance, and has wide generality.

[0027] As Figure 2As shown in the figure, in the embodiment of the present utility model, the adjusting cross beam 1 includes a connecting rod 11, a sliding sleeve rod 12, a locking plate 13, a first reinforcing plate 14, a connecting support 15 and a first ear seat 16. Among them, the connecting rod 11 is of a square rod structure and is made of aluminum alloy material. There are two groups of sliding sleeve rods 12, which are of a square tube structure and are adapted to the size of the connecting support 15. The two groups of sliding sleeve rods 12 are symmetrically sleeved at both ends of the connecting rod 11 and can linearly displace and slide under the limitation of the connecting rod 11, so as to adjust the length of the adjusting cross beam 1 and make the vehicle body connecting seat 2 connected to the adjusting cross beam 1 adapt to the vehicle body interfaces of different vehicle models. The locking plate 13 is fixedly arranged on the outer periphery of the sliding sleeve rod 12 by welding, and is provided with a plurality of screw holes. The screw rod sequentially passes through the locking plate 13 and the sliding sleeve rod 12 and abuts against the outer periphery of the connecting rod 11, so as to lock the sliding sleeve rod 12. The connecting support 15 is fixedly arranged at the outer end of the sliding sleeve rod 12, and the hinged connection with the rotating arm 4 can be realized by providing the connecting support 15. The first reinforcing plate 14 is fixedly arranged on the side of the connecting support 15 and the sliding sleeve rod 12, and is used to strengthen the connection strength between the connecting support 15 and the sliding sleeve rod 12. The first ear seat 16 is fixedly arranged at the top of the outer end of the sliding sleeve rod 12 and is used for hinged connection with one end of the angle adjusting mechanism 3.

[0028] As Figure 3 shown, the vehicle body connecting seat 2 is used to fix the adjusting cross beam 1 on the vehicle body interface, and includes a connecting square tube 21, a bottom support plate 22 and a second reinforcing plate 23. The connecting square tube 21 is provided with through holes, which correspond to the threaded holes on the vehicle body interface. Bolts are sequentially passed through the sliding sleeve rod 12 and the connecting square tube 21 and then threadedly connected to the threaded holes on the vehicle body interface, so as to fix the adjusting cross beam 1 on the vehicle body interface. The bottom support plate 22 is vertically fixed to the front end of the connecting square tube 21 by welding, and supports the bottom of the sliding sleeve rod 12. A plurality of through holes are provided thereon, and bolts are passed through the through holes and threadedly connected to the bottom of the sliding sleeve rod 12, so as to fix the sliding sleeve rod 12 on the bottom support plate 22, which can effectively resist the torque force on the sliding sleeve rod 12 and prevent the adjusting cross beam 1 from bending and deforming. The second reinforcing plate 23 is a wedge-shaped plate, the top of which is fixedly connected to the bottom of the bottom support plate 22, and the side is fixedly connected to the front end of the connecting square tube 21, so as to strengthen the connection strength between the connecting square tube 21 and the bottom support plate 22.

[0029] As Figure 4-5As shown, the angle adjustment mechanism 3 is used to adjust the included angle between the rotating support arm 4 and the adjustment cross beam 1, and it includes a screw sleeve 301, a first adjustment screw 302, a second adjustment screw 303, a first lifting lug 304 and a second lifting lug 305. Threads with opposite directions are respectively provided at both ends of the inner wall of the screw sleeve 301; the first adjustment screw 302 and the second adjustment screw 303 are respectively threadedly connected to the screw sleeve 301. By turning the screw sleeve 301 forward and backward with a wrench, the first adjustment screw 302 and the second adjustment screw 303 are moved away from or close to each other, so as to change the extension length of the angle adjustment mechanism 3 and adjust the included angle between the rotating support arm 4 and the adjustment cross beam 1. The other end of the first adjustment screw 302 is provided with a first lifting lug 304. One end of the angle adjustment mechanism 3 is hinged to the adjustment cross beam 1 by inserting a pin shaft into the first ear seat 16 and the first lifting lug 304. The other end of the second adjustment screw 303 is provided with a second lifting lug 305. The other end of the angle adjustment mechanism 3 is hinged to the rotating support arm 4 by inserting a pin shaft into the second lifting lug 305.

[0030] As Figure 6 As shown, the rotating support arm 4 includes an arm rod 41, a second ear seat 42, a third lifting lug 43 and a connecting backing plate 44. A third lifting lug 43 is fixedly provided at one end of the arm rod 41, and a connecting backing plate 44 is fixedly provided at the bottom of the other end. The third lifting lug 43 is fixedly provided at the top end of the arm rod 41, and it is butt-jointed with the second lifting lug 305 and hinged by a pin shaft, so as to realize the hinging of the other end of the angle adjustment mechanism 3 and the rotating support arm 4.

[0031] Further, the third lifting lug 43 and the first ear seat 16 are hinged by a pin 6; wherein, a second pin hole 431 is provided on the third lifting lug 43, a first pin hole 151 is provided on the first ear seat 16, and the pin 6 sequentially passes through the first pin hole 151 and the second pin hole 431 to hinge the third lifting lug 43 and the first ear seat 16. Further, a limit pin hole 152 is further provided on the first ear seat 16, and an arc-shaped groove 432 is provided on the third lifting lug 43. By inserting a rotating pin 7 into the limit pin hole 152 and the arc-shaped groove 432 in sequence, the rotation angle between the rotating support arm 4 and the adjustment cross beam 1 is limited, preventing the first adjustment screw 302 and the second adjustment screw 303 from being disengaged from the screw sleeve 301 due to an excessive rotation angle.

[0032] The nylon support 5 is in a hemispherical structure, and its top is fixedly connected to the other end of the rotating support arm 4 through the connecting backing plate 44. As a ground contact mechanism, when the vehicle rolls over, the nylon support 4 contacts the ground. The nylon support 4 has the characteristics of high strength and strong impact resistance, and can effectively absorb impact and provide support force.

[0033] When installing the test protection device of the present utility model, push the two sets of sliding sleeve rods 12 to slide along the connecting rod 11 to align the vehicle body connecting seat 2 with the vehicle body interface. Tighten the screw on the locking plate 13 so that the bottom of the screw abuts against the outer circumference of the connecting rod 11, thereby locking the sliding sleeve rod 12. Pass bolts through the adjusting cross beam 1 and the vehicle body connecting seat 2 and thread them into the screw holes of the vehicle body interface to fix the adjusting cross beam 1 on the vehicle body interface. By turning the screw sleeve 301 forward and backward with a wrench, the extension length of the angle adjustment mechanism 3 is changed to adjust the angle between the rotating support arm 4 and the adjusting cross beam 1, so that the ground clearance of the nylon support 4 reaches the design requirement, thus completing the installation operation of the protection device and proceeding to the next handling stability test.

[0034] The test protection device of the present utility model adopts a symmetric split design, with a simple structure, which is convenient for installation, use and storage. It is easy to replace and repair after damage, greatly reducing the manufacturing and use costs.

[0035] The test protection device of the present utility model has a mature process, a large overall structural strength, a light weight, and little influence on the test results after installation. It can be applied to special wheeled off-road vehicles within 10 tons.

[0036] The test protection device of the present utility model can freely adjust the distance between the vehicle body interfaces and the ground clearance of the support structure according to the vehicle type. It has a large adjustment range, a delicate adjustment method, and is easy to operate. It is perfectly suitable for special wheeled vehicles with a large mass, a high center of gravity, and a high ground clearance, and has wide versatility.

[0037] It is easy for those skilled in the art to understand that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special wheeled vehicle handling stability test protection device, characterized in that: include: An adjusting beam (1) whose two ends are respectively hinged to a rotating support arm (4); A vehicle body connecting seat (2) for fixing the adjusting crossbeam (1) to the vehicle body; An angle adjustment mechanism (3) whose two ends are respectively hinged to the adjustment beam (1) and the rotating arm (4), and which adjusts the angle between the rotating arm (4) and the adjustment beam (1) by adjusting its own extension length; And a nylon support (5) fixedly arranged at the bottom of the other end of the rotating support arm (4).

2. A special wheeled vehicle handling stability test protection device according to claim 1, characterized in that: The angle adjustment mechanism (3) comprises a screw sleeve (301), a first adjusting screw rod (302) and a second adjusting screw rod (303); both ends of the inner wall of the screw sleeve (301) are provided with positive and negative threads respectively; the first adjusting screw rod (302) and the second adjusting screw rod (303) are respectively threadedly connected to the screw sleeve (301); the other end of the first adjusting screw rod (302) is hinged to the adjusting crossbeam (1), and the other end of the second adjusting screw rod (303) is hinged to the rotating support arm (4).

3. The special wheeled vehicle handling stability test protection device according to any one of claims 1-2, characterized in that: The adjustment crossbeam (1) comprises a connecting rod (11), a sliding sleeve rod (12), and a locking plate (13).

4. The special wheeled vehicle handling stability test protection device according to claim 3, characterized in that: The connecting rod (11) is a square rod structure and is made of aluminum alloy; The sliding sleeve rods (12) are provided with two groups, which are square tube-shaped structures and are adapted to the size of the connecting support (15). The two groups of sliding sleeve rods (12) are symmetrically sleeved on both ends of the connecting rod (11); The locking plate (13) is fixed to the outer periphery of the sliding sleeve (12) by welding, and is provided with a plurality of sets of screw holes. The screws pass through the locking plate (13) and the sliding sleeve (12) in sequence to contact the outer periphery of the connecting rod (11), thereby locking the sliding sleeve (12).

5. The special wheeled vehicle handling stability test protection device according to any one of claims 1-2, characterized in that: The vehicle body connecting seat (2) comprises a connecting square tube (21), a bottom supporting plate (22) and a second reinforcing plate (23); The connecting square tube (21) is provided with a through hole, which corresponds to the threaded hole on the vehicle body interface. Bolts are sequentially passed through the adjusting cross beam (1) and the connecting square tube (21) and then threadedly connected with the threaded hole on the vehicle body interface, thereby fixing the adjusting cross beam (1) on the vehicle body interface. The bottom support plate (22) is vertically fixed to the front end of the connecting square tube (21) by welding to support the bottom of the adjusting cross beam (1). A plurality of through holes are provided on the bottom support plate, and bolts are passed through the through holes to be threadedly connected to the bottom of the adjusting cross beam (1), thereby fixing the adjusting cross beam (1) on the bottom support plate (22); The second reinforcing plate (23) is a wedge-shaped plate, the top of which is fixedly connected to the bottom of the bottom supporting plate (22), and the side of which is fixedly connected to the front end of the connecting square tube (21).

6. The special wheeled vehicle handling stability test protection device according to any one of claims 1-2, characterized in that: The nylon support (5) is a hemispherical structure, and its top is fixedly connected to the other end of the rotating support arm (4) via a connecting pad (44).

7. The special wheeled vehicle handling stability test protection device according to any one of claims 1-2, characterized in that: A third lifting ear (43) is fixedly provided at one end of the rotating support arm (4), and the third lifting ear (43) is hinged to a first ear seat (16) provided at the end of the adjusting crossbeam (1) via a latch (6).

8. The special wheeled vehicle handling stability test protection device according to claim 7, characterized in that: The first ear seat (16) is also provided with a limit pin hole (152), and the third lifting ear (43) is provided with an arc groove (432). The rotation pin (7) is inserted into the limit pin hole (152) and the arc groove (432) in sequence, thereby limiting the rotation angle between the rotating support arm (4) and the adjustment beam (1).

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