Personnel leg reverse impact calibration device for vehicle

Abstract

According to the vehicle personnel leg reverse impact calibration device, a suspension mechanism is arranged in the middle of the upper end of a supporting frame, bearing cross beams are arranged in the middle of the supporting frame, the bearing cross beams are perpendicular to the supporting frame, a damping mechanism is rotationally arranged above the rear portions of the bearing cross beams, and an impact trolley is movably arranged between the bearing cross beams; according to the scheme, the investment of a power source is reduced, and the cost is reduced. The integrated design of the leg-shaped supporting frame and the launching track is adopted, the supporting frame is connected with the iron floor, and the strength of the device is improved; and the flexible leg can be directly hung for use, so that the working process of collision points is reduced, and the efficiency, the accuracy and the repeatability of the equipment are improved. And by adopting the rebound buffer mechanism, the launching system is protected under the condition that launching is not influenced, and the safety of equipment is improved. And the adopted suspension mechanism does not interfere with the movement of the flexible leg, so that the unhooking smoothness of the flexible leg is realized, and the accuracy and consistency of the test are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile testing, and more specifically to a vehicle-used personnel leg reverse impact calibration device. Background Art

[0002] When a car collides head-on with a pedestrian, the pedestrian's legs are usually the first to be injured. Leg injuries mainly include: leg fractures, ligament tears, knee dislocations, ankle injuries, and foot dislocations. Due to the diversity of leg injuries, the FLEX-PLI flexible leg, as a substitute for the pedestrian's legs in pedestrian protection regulations, is destined to have a very complex internal structure and many sensors. Without accurate calibration tests, it will be impossible to accurately grasp the overall state of the leg shape, let alone obtain accurate test data.

[0003] The draft for approval of the mandatory regulation GB 24550-202X "Automobile Collision Protection against Pedestrians" issued by my country in 2022 specifies in detail the calibration test of the lower leg type, among which the reverse impact calibration test is a dynamic calibration test required by the regulation. The regulation requires a maximum of 10 impact tests on the flexible legs, which requires a reverse impact calibration test on the flexible legs. Therefore, a reverse impact calibration device for the flexible legs is indispensable. However, the reverse impact calibration equipment for flexible legs in my country today has a small number of equipment types, and most of them are independent power source modes, which have high costs and waste of launch resources. There is insufficient research on the full set of reverse impact calibration equipment using the leg-type launcher mode. It is just a simple counterweight modification of the original leg-type launch module, which has problems such as large impact position deviation, unsmooth unhooking, shaking of the impact device, and rebound and impact of the impact trolley on the launcher. Utility Model Content

[0004] The present invention provides a wind-resistant suspended rail vehicle drive frame, which is used to solve the technical problems arising from the above-mentioned background technology.

[0005] The reverse impact calibration device for vehicle personnel legs comprises a support frame, a suspension mechanism, a load-bearing crossbeam, a damping mechanism and an impact trolley, wherein the suspension mechanism is arranged at the middle of the upper end of the support frame, the load-bearing crossbeam is arranged at the middle of the support frame, and the position relationship between the load-bearing crossbeam and the support frame is a vertical relationship, the damping mechanism is rotatably arranged above the rear of the load-bearing crossbeam, the impact trolley is movably arranged between the load-bearing crossbeams, the front part of the suspension mechanism is a vertical frame, the vertical frame is fixedly arranged at the middle of the upper end of the support frame, the lower part of the vertical frame is hingedly provided with a hanger, and the hanger A spring is provided between the front end of the frame and the vertical frame, a hanger is vertically provided at the rear end of the hanger, and a flexible leg mold is provided for the movable hanger. The main body of the damping mechanism is a rotating rod, and a support plate is provided at the rear of the load-bearing beam. Both ends of the damping mechanism are rotatably connected to the support plate, and a torsion spring is provided at the connection. Support wheels are connected to both sides of the middle of the damping mechanism through a connecting frame, and a first damper is connected to both sides of the middle of the damping mechanism through a connecting frame. The first damper is located on the inner side of the support wheel, and blocking brackets are provided on both sides of the damping mechanism. The blocking bracket, the first damper, the support wheel and the damping mechanism rotate concentrically.

[0006] Preferably, the vehicle-based occupant's leg reverse impact calibration device is characterized in that a track is provided on the inner end surface of the load-bearing crossbeam, a second damper is provided in the middle of the inner end surface of the track, and the second damper is parallel to the track.

[0007] Preferably, a reverse impact calibration device for vehicle personnel's legs is characterized in that sliding wheels are arranged on both side ends of the impact trolley, the sliding wheels are slidably set in the track, a buffer impact space is provided on the side end of the impact trolley, the buffer impact space is consistent with the horizontal position of the second damper, and the front of the impact trolley is provided with honeycomb aluminum.

[0008] Preferably, the vehicle-based occupant's leg reverse impact calibration device is characterized in that the support plate is attached to the upper end and the side end of the load-bearing crossbeam.

[0009] Preferably, a vehicle-based occupant's leg reverse impact calibration device is characterized in that a pulley bracket is provided at the upper end of the flexible leg mold, a pulley is rotatably provided at the upper portion of the pulley bracket, and the flexible leg mold is hung on a suspension rod via the pulley.

[0010] Beneficial effects: This solution reduces the input of power sources and reduces costs. The leg-shaped support frame and the launch track are integrated into a design, and the support frame is connected to the iron floor, which improves the strength of the device; the flexible legs can be directly suspended for use, which reduces the work process of the collision point and improves the efficiency, accuracy and repeatability of the equipment. The rebound buffer mechanism protects the launch system without affecting the launch, thereby improving the safety of the equipment. The suspension mechanism used does not interfere with the movement of the flexible legs, so that the flexible legs can be unhooked smoothly, ensuring the accuracy and consistency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of the utility model after working;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model before working;

[0014] Figure 3 This is the structural diagram of the suspension mechanism of the utility model;

[0015] Figure 4 This is the structural diagram of the impact trolley of the utility model;

[0016] Figure 5 This is a structural diagram of the damping mechanism of the utility model.

[0017] In the figure: supporting frame 1, suspension mechanism 2, vertical frame 201, hanger 202, hanger 2021, spring 203, flexible leg mold 204, bracket 2041, pulley 2042, load-bearing beam 3, support plate 301, track 302, second damper 303, damping mechanism 4, support wheel 401, first damper 402, blocking bracket 403, torsion spring 404, impact trolley 5, sliding wheel 501, buffer impact space 502. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] It should be noted that, in the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The "setting" conjunction designed in this scheme is a broad connection definition, and its connection methods may include "welding", "integral forming", "bolting" and other connection methods.

[0020] Furthermore, the terms “first,” “second,” “third,” etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0021] according to Figure 1-5 As shown, a vehicle-used leg reverse impact calibration device comprises a support frame 1, a suspension mechanism 2, a load-bearing beam 3, a damping mechanism 4, and an impact trolley 5, wherein the suspension bracket is arranged at the middle of the upper end of the support frame 1, the load-bearing beam 3 is arranged at the middle of the support frame 1, and the position relationship between the load-bearing beam 3 and the load-bearing frame is a vertical relationship, the damping mechanism 4 is rotatably arranged above the rear of the load-bearing beam 3, the impact trolley 5 is movably arranged between the load-bearing beams 3, the front part of the suspension mechanism 2 is a vertical frame 201, the vertical frame 201 is fixedly arranged at the middle of the upper end of the support frame 1, the lower part of the vertical frame 201 is hingedly provided with a hanger 202, and the front end of the hanger 202 is connected to the vertical frame 201 A spring 203 is provided in the middle, a suspension rod 2021 is vertically provided at the rear end of the hanger 202, and a flexible leg mold 204 is provided for the movable hanger. The main body of the damping mechanism 4 is a rotating rod, and a support plate 301 is provided at the rear of the load-bearing crossbeam 3. Both ends of the damping mechanism 4 are rotatably connected to the support plate 301, and a torsion spring 404 is provided at the connection. Support wheels 401 are connected on both sides of the middle part of the damping mechanism 4 through a connecting frame. A first damper 402 is connected on both sides of the middle part of the damping mechanism 4 through a connecting frame. The first damper 402 is located on the inner side of the support wheel 401. Blocking brackets 403 are provided on both sides of the damping mechanism 4. The blocking bracket 403, the first damper 402, the support wheel 401 and the damping mechanism 4 rotate concentrically.

[0022] Furthermore, a track 302 is provided on the inner end surface of the bearing crossbeam 3 , and a second damper 303 is provided in the middle of the inner end surface of the track 302 . The second damper 303 is parallel to the track 302 .

[0023] Furthermore, sliding wheels 501 are arranged on both side ends of the impact trolley 5, and the sliding wheels 501 are slidably set in the track 302. A buffering impact space 502 is provided at the side end of the impact trolley 5, and the buffering impact space 502 is consistent with the horizontal position of the second damper 303. The front of the impact trolley 5 is provided with honeycomb aluminum 503.

[0024] Furthermore, the support plate 301 is attached to the upper end and the side end of the bearing beam 3 .

[0025] Furthermore, a pulley 2042 bracket 2041 is provided at the upper end of the flexible leg mold 204 , and a pulley 2042 is rotatably provided on the upper part of the pulley 2042 bracket 2041 , and the flexible leg mold 204 is suspended on the suspension rod 2021 through the pulley 2042 .

[0026] like Figure 1-5As shown, the support frame 1 is vertically arranged with the ground, the middle of the upper end of the support frame 1 is suspended by a mechanism 2, the upper part of the suspension mechanism 2 is a vertical frame 201, the lower end of the longitudinal frame rod of the vertical frame 201 is hinged with a hanger 202, the outer end of the hanger 202 is vertically provided with a hanger 2021, the inner side of the hanger 202 is connected with the lower end of the horizontal frame rod of the vertical frame 201 and is provided with a spring 203, the upper end of the flexible leg mold 204 is rotated by a pulley 2042 bracket 2041 and is provided with a pulley 2042, the pulley 2042 and the pulley 2042 bracket The gap between 2041 passes through the hanger 2021, and the pulley 2042 slides and contacts the hanger 2021. When the flexible leg mold 204 is vertically suspended on the hanger 2021, the spring 203 is stretched to a certain length. When the flexible leg mold 204 is hit by the impact trolley 5, the flexible leg mold 204 slides forward through the roller, and the spring 203 rebounds to provide an upward rotation force to the hanger 202 and the hanger 2021, so that the rolling time of the flexible leg mold 204 on the hanger 2021 is shorter and the unhooking is smoother.

[0027] The bearing crossbeam 3 is arranged on both sides of the inner end of the supporting frame, and is perpendicular to the supporting frame 1. Support plates 301 are arranged on both sides of the bearing crossbeam 3. The outer ends of the support plates 301 are longitudinal plates, which are attached to the outer ends of the bearing crossbeam 3. A transverse plate is arranged in the middle of the support plate 301, and the transverse plate is attached to the upper end surface of the bearing crossbeam 3. Support wheels 401 are arranged on both sides of the damping mechanism 4 through connecting frames. First dampers 402 are arranged on both sides of the damping mechanism 4 through connecting frames. The first damper 402 is located on the inner side of the supporting wheel 401, and an angle is set between the connecting frame of the first damper 402 and the connecting frame of the supporting wheel 401. Blocking brackets 403 are arranged on both sides of the damping mechanism 4. The blocking brackets 403 are located on the outer side of the connecting frame of the supporting wheel 401, and the blocking brackets 403 and the connecting frame of the first damper 402 are connected to the connecting frame of the supporting wheel 401. There is an angle between them, the distance between the blocking brackets 403 is greater than the distance between the inner sides of the load-bearing beam 3, the damping mechanism 4 is rotatably arranged between the longitudinal plates of the support plate 301, and is located above the transverse plate. When the impact trolley 5 is launched, the damping mechanism 4 rotates a certain angle, and the supporting wheel 401 on the damping mechanism 4 contacts the impact trolley 5 to support the entire damping mechanism 4, thereby not affecting the launch of the impact trolley 5, and the protection of the launch system after the impact trolley 5 ends. After the impact trolley 5 is launched, the damping mechanism 4 loses support, and the damping mechanism 4 rebounds under the action of the torsion spring 404. When the damper is parallel to the load-bearing beam 3, the blocking brackets 403 described in this scheme contact with the transverse plate of the support plate 301 to play a role in fixing the rotation position. When the impact trolley 5 rebounds, the damper will absorb energy to prevent it from hitting the launch system.

[0028] A buffering impact space 502 is provided on both side ends of the impact trolley 5, and a second damper 303 is provided in parallel at the middle of the inner end of the track 302 through a fixed frame. The launching system impacts the rear end of the impact trolley 5, and the impact trolley 5 slides in the track 302 through the sliding wheel 501 and moves forward. After the speed of the impact trolley 5 reaches the requirement, it runs at a constant speed for a distance, and the honeycomb aluminum 503 at the front of the impact trolley impacts the middle of the flexible leg mold 204, thereby simulating the hard body of the vehicle to impact the human leg. After the impact, the second damper 303 is hit through the buffering impact space 502, and the impact trolley 5 enters the deceleration and stopping stage. The impact trolley 5 retreats due to the impact force and inertia. After rebounding, the impact trolley 5 collides with the fallen first damper 402 until it stops. At this time, the blocking bracket 403 contacts the transverse plate of the fixed plate to play a supporting role.

[0029] After the work is completed, push the impact trolley 5 backwards, manually flip the damping mechanism 4, and push the impact trolley 5 downwards. At this time, the rotation angle of the damping mechanism 4 is just at the position where the support wheel 401 rolls and contacts the upper end surface of the impact trolley 5. There will be no obstruction in the track 302. Move the impact trolley 5 to the launching point, slowly lower the rebound buffer bracket, and place the pulley 2042 on the rebound buffer bracket on the upper part of the impact trolley 5. The impact method of the impact trolley 5 can be through air pressure or other instantaneous impact methods.

[0030] 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 vehicle-based leg reverse impact calibration device, comprising a support frame (1), a suspension mechanism (2), a load-bearing crossbeam (3), a damping mechanism (4), and an impact trolley (5), characterized in that The suspension mechanism (2) is arranged at the middle of the upper end of the support frame (1), the bearing crossbeam (3) is arranged at the middle of the support frame (1), and the position relationship between the bearing crossbeam (3) and the support frame (1) is a vertical relationship, the damping mechanism (4) is rotatably arranged above the rear of the bearing crossbeam (3), and the impact trolley (5) is movably arranged between the bearing crossbeams (3), the front part of the suspension mechanism (2) is a vertical frame (201), the vertical frame (201) is fixedly arranged at the middle of the upper end of the support frame (1), the lower part of the vertical frame (201) is hingedly provided with a hanger (202), a spring (203) is arranged between the front end of the hanger (202) and the vertical frame (201), and a hanger rod (203) is vertically arranged at the rear end of the hanger (202). 021), the movable crane is provided with a flexible leg mold (204), the main body of the damping mechanism (4) is a rotating rod, a support plate (301) is provided at the rear of the load-bearing crossbeam (3), the two ends of the damping mechanism (4) are rotatably connected to the support plate (301), and a torsion spring (404) is provided at the connection, support wheels (401) are provided on the outside of the end surfaces on both sides of the middle part of the damping mechanism (4), first dampers (402) are provided on the outside of the end surfaces on both sides of the middle part of the damping mechanism (4), and the first damper (402) is located on the inner side of the support wheel (401), and blocking brackets (403) are provided on both sides of the damping mechanism (4), and the blocking brackets (403), the first damper (402), the support wheel (401) and the damping mechanism (4) rotate concentrically.

2. The vehicle-based leg reverse impact calibration device according to claim 1, characterized in that The inner end surface of the bearing crossbeam (3) is provided with a track (302), and the middle part of the inner end surface of the track (302) is provided with a second damper (303), and the second damper (303) is parallel to the track (302).

3. The vehicle-mounted leg reverse impact calibration device according to any one of claims 1 or 2, characterized in that The impact trolley (5) is provided with sliding wheels (501) arranged on both side ends, the sliding wheels (501) are slidably arranged in the rails (302), a buffer impact space (502) is provided on the side end of the impact trolley (5), the buffer impact space (502) is consistent with the horizontal position of the second damper (303), and the front part of the impact trolley (5) is provided with honeycomb aluminum (503).

4. The vehicle leg reverse impact calibration device according to claim 1, characterized in that The support plate (301) is attached to the upper end and the side end of the bearing crossbeam (3).

5. The vehicle-based leg reverse impact calibration device according to claim 1, characterized in that The upper end of the flexible leg mold (204) is provided with a pulley (2042) bracket (2041), and the upper part of the pulley (2042) bracket (2041) is rotatably provided with a pulley (2042), and the flexible leg mold (204) is suspended on the suspension rod (2021) through the pulley (2042).

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