Search

CN-224216286-U - Jacking device bench test device for pedestrian protection

CN224216286UCN 224216286 UCN224216286 UCN 224216286UCN-224216286-U

Abstract

The utility model discloses a jack stand test device for pedestrian protection, which comprises a stand workbench, wherein a simulation engine cover is arranged on the stand workbench, a lock catch, an up-down adjusting mechanism, a front-back adjusting mechanism, a left-right adjusting mechanism and a back-force measuring mechanism are respectively arranged at the front end and the rear end of the simulation engine cover, and the simulation engine cover is also connected with a back-force measuring mechanism. The utility model solves the problem that the working parameters of the jack are difficult to accurately test in the existing simulation.

Inventors

  • LI CHONGCHONG
  • JIA JINWEI
  • XU LEI
  • REN SHOUYUAN
  • LI MENG
  • LIU XI
  • BAI HONGYONG

Assignees

  • 陕西庆华汽车安全系统有限公司

Dates

Publication Date
20260508
Application Date
20250428

Claims (10)

  1. 1. The jack-up bench test device for pedestrian protection is characterized by comprising a bench workbench (2), wherein a simulation engine cover (4) is arranged on the bench workbench (2), a lock catch, an up-down adjusting mechanism (3), a front-back adjusting mechanism (5) and a left-right adjusting mechanism (5) are respectively arranged at the front end and the rear end of the simulation engine cover (4), and the simulation engine cover (4) is further connected with a return force measuring mechanism (6).
  2. 2. The jack-up bench test device for pedestrian protection according to claim 1, characterized in that the lock catch and the up-down adjusting mechanism (3) comprise a base (1), the base (1) is fixed on the bench workbench (2) through bolts, an up-down adjusting screw (7) which is vertically arranged is fixed on the base (1), a first screw nut is arranged on the up-down adjusting screw (7), the first screw nut is fixedly connected with the lock catch, and the up-down adjusting screw (7) is connected with a first hand wheel (8).
  3. 3. The jack-up bench test device for pedestrian protection according to claim 2, wherein the lock catch and the up-down adjusting mechanism (3) further comprise an up-down adjusting frame (9) and a guide rod (10), the up-down adjusting frame (9) is fixedly connected with the first screw nut, the lock catch (11) is fixed on the up-down adjusting frame (9), the guide rod (10) is arranged on two sides of the up-down adjusting screw (7), the guide rod (10) is parallel to the up-down adjusting screw (7), the bottom end of the guide rod (10) is fixedly connected with the base (1), the guide rod (10) penetrates through the up-down adjusting frame (9), the first screw nut drives the up-down adjusting frame (9) to move up and down along the guide rod (10), and the lock catch is fixedly arranged on the up-down adjusting frame (9).
  4. 4. The pedestrian protection jack-up test device of claim 2, wherein a hook (12) is fixed to the front end of the simulated hood, the hook (12) being mated with a lock catch.
  5. 5. The jack-up bench test device for pedestrian protection according to claim 2, characterized in that the front-back and left-right adjusting mechanism (5) comprises a front-back adjusting screw rod (13), the front-back adjusting screw rod (13) is arranged in parallel with the length direction of the simulation engine cover (4), a second screw nut is arranged on the front-back adjusting screw rod (13), the second screw nut is fixedly connected with a connecting seat (14), a guide rail (15) is arranged on the connecting seat (14), two sliding blocks (16) are arranged on the guide rail (15), and the two sliding blocks (16) are respectively clamped on two sides of the rear end of the simulation engine cover (4).
  6. 6. The jack-up bench test device for pedestrian protection according to claim 5, characterized in that the front and rear adjusting screw (13) is connected with a second hand wheel (17), two ends of the front and rear adjusting screw (13) are provided with fixing seats (18), and the fixing seats (18) are fixed on the bench workbench (2) through bolts.
  7. 7. The lifter bench test device for pedestrian protection according to claim 1, characterized in that the return force detection mechanism (6) comprises a hinge fixing piece (19), an automobile hinge (20), a lifter (21) and a plurality of pressure sensors (22), wherein the hinge fixing piece is fixed on the bench workbench (2), one end of the automobile hinge (20) is connected with the simulated engine cover (4), the other end of the automobile hinge is rotatably connected with the hinge fixing piece (19), the lifter (21) is fixed below the simulated engine cover, and the pressure sensors (22) are respectively arranged at the contact position of the simulated engine cover (4) and the lifter (21), the connection position of the simulated engine cover (4) and the automobile hinge (20) and the connection point of the automobile hinge (20) and the hinge fixing piece (19); The positioning force detection mechanism (6) further comprises a cylinder mounting bracket arranged on the outer side of the simulated engine cover (4), the cylinder mounting bracket comprises a connecting base (23) fixed on the bench workbench (2), the connecting base (23) is connected with a clamp (24) through a joint bearing, and the clamp (24) clamps a cylinder (25).
  8. 8. The pedestrian protection jack-up bench test device according to claim 7, characterized in that the jack-up (21) is fixed on the bench work table (2) by a fixed bracket provided with a displacement sensor which monitors the jack-up height of the jack-up (21).
  9. 9. The pedestrian protection jack-up test device of claim 7, wherein an angle sensor is provided on the jig (24).
  10. 10. The pedestrian protection lifter bench test device according to claim 7, characterized in that the tip of the lifter (21) is in direct contact with or connected to the dummy bonnet (4); When the jack (21) is connected with the simulated engine cover (4), a connecting block is fixed on the lower surface of the simulated engine cover (4), and the top end of a piston rod of the jack (21) is connected with the connecting block through a spherical hinge and a pin shaft.

Description

Jacking device bench test device for pedestrian protection Technical Field The utility model belongs to the technical field of jack performance test equipment, and relates to a jack stand test device for pedestrian protection. Background In the development of jack test devices, many challenges are faced. At present, a mature experience system which can be fully referenced is not available in the industry, and the existing test mode mostly depends on simulation means. Specifically, a fine simulation model is built according to structural information parameters of the jack, and then fine simulation curves of displacement and jacking force are obtained by adjusting characteristic parameters. However, this approach is limited to simulating the performance test of the jack under ideal conditions, and in practical application scenarios, there are many limitations that are difficult to overcome. The real traffic environment is extremely complex, and the external influence factors are numerous and mutually interweaved. For example, in real vehicle collision, the road surface condition is often uneven, which may have unexpected influence on the working state of the lifter, different weather conditions are also not ignored, like wet road surface caused by rain, friction force between vehicle components can be changed, low temperature weather may cause component performance to change, and further normal operation of the lifter is affected, different postures of the vehicle during running, various random conditions appearing at the moment of contact between pedestrians and the vehicle, and the like, and these complex external factors are difficult to be accurately represented in the simulation model and are included in the consideration range. Although the simulation is helpful to understand the basic performance of the jack to a certain extent, the actual working state of the jack in a real traffic environment and the protection effect of the jack on pedestrians can not be accurately reflected because the external factors cannot be truly restored. Disclosure of utility model The utility model aims to provide a bench test device for a lifter for pedestrian protection, which solves the problem that the working parameters of the lifter are difficult to accurately test in the existing simulation. The technical scheme includes that the bench test device of the lifter for pedestrian protection comprises a bench workbench, wherein a simulation engine cover is arranged on the bench workbench, a lock catch, an up-down adjusting mechanism, a front-back adjusting mechanism, a left-right adjusting mechanism and a back-position detecting mechanism are respectively arranged at the front end and the rear end of the simulation engine cover, and the simulation engine cover is also connected with a back-position detecting mechanism. The utility model is also characterized in that: The lock catch and the up-down adjusting mechanism comprise a base, the base is fixed on the bench workbench through bolts, an up-down adjusting screw rod which is vertically arranged is fixed on the base, a first screw rod nut is arranged on the up-down adjusting screw rod, the lock catch is fixedly connected with the first screw rod nut, and the up-down adjusting screw rod is connected with a first hand wheel. The lock catch and the up-down adjusting mechanism further comprise an up-down adjusting frame and a guide rod, the up-down adjusting frame is fixedly connected with the screw rod nut, the lock catch is fixed on the up-down adjusting frame, the guide rod is arranged on two sides of the up-down adjusting screw rod, the guide rod is parallel to the up-down adjusting screw rod, the bottom end of the guide rod is fixedly connected with the base, the guide rod penetrates through the up-down adjusting frame, the first screw rod nut drives the up-down adjusting frame to move up and down along the guide rod, and the lock catch is fixedly arranged on the up-down adjusting frame. The front end of the simulation engine cover is fixed with a hook which is matched with the lock catch. The front-back and left-right adjusting mechanism comprises a front-back adjusting screw rod which is arranged in parallel with the length direction of the simulated engine cover, a second screw rod nut is arranged on the front-back adjusting screw rod, the second screw rod nut is fixedly connected with a connecting seat, a guide rail is arranged on the connecting seat, two sliding blocks are arranged on the guide rail, and the two sliding blocks are respectively clamped on two sides of the rear end of the simulated engine cover. The front adjusting screw and the rear adjusting screw are connected with a second hand wheel, two ends of the front adjusting screw and the rear adjusting screw are provided with fixing seats, and the fixing seats are fixed on the bench workbench through bolts. The device comprises a return force measuring mechanism, a pressure sensor and a control mechanis