Pedestrian protection test leg type striker capturing device and capturing method

Abstract

The invention provides a capturing device and a capturing method for a pedestrian protection test leg type striker. The capturing device comprises a supporting component, a control component, a movable component and a capturing component. The supporting structure fixes the position of the capturing device. The control component comprises a gas storage tank component, a control gas circuit component and a control box, and the control structure controls the movable component. The movable component comprises an air cylinder component and a fixed pulley component and drives the catching device to operate. The catching component comprises a catching net, a catching net traction rope and a leg-shaped striker traction rope, and the catching component is used for controlling the direction of the leg-shaped striker and catching the leg-shaped striker. The capturing method is applied to the capturing device and comprises the steps of inflation preparation, mode selection, direction control, capturing operation and recovery. The device is stable, firm, high in integrality and high in collaboration, the leg type striker can be effectively controlled and captured, the damage rate of the leg type striker is reduced, and the test cost and the time cost are reduced.

Description

Technical Field

[0001] The invention relates to the field of vehicle safety pedestrian protection test, in particular to a capture device and a capture method for a leg-shaped striker in a pedestrian protection test. Background Art

[0002] Pedestrian protection is an important branch in the field of automobile safety. Various consumer testing organizations and national standards and regulations have set corresponding test standards and technical measures for it. The leg-type test is one of the test types of pedestrian protection conditions. The characteristics of this test condition are that the leg-type striker has a fast firing speed and a large mass. It will complete the impact process within a few milliseconds and then rebound. The usual leg-type capture method is to manually pull the leg-type striker by pulling the rope during rebound. The main problems of this method are: first, the rebound direction of the leg-type striker is difficult to predict. Second, traditional operation is more dangerous. Due to the fast rebound process, the operator may not be able to react quickly, and the large energy may easily cause damage to the operator's wrist. Third, the test cost is high. Since the leg-type striker is expensive, if it is damaged due to untimely pulling the rope, it will greatly increase the test cost, and replacement and calibration will take a lot of time. At the same time, the multiple uncontrollable rebound impacts of the leg-type striker are also easy to damage other test equipment in the test.

[0003] The Chinese patent CN 118424737 A discloses a capture device and method for pedestrian protection leg type test: a bracket is fixed on a support base, a lifting ring is installed on the bracket, and a first pulley is installed on the top of the support base; a cylinder is fixed under the support base, a second pulley is fixed on the cylinder piston rod, and a steel wire rope is passed around the second pulley so that one end with a ring passes around the first pulley; a controller is connected to a directional control valve through a trigger line, an air tank is fixed under the support base, an air source is connected to an air inlet of the air tank through a pipeline, and an air outlet of the air tank is connected to an air inlet of the cylinder through a directional control valve.

[0004] This capture device improves the manual pull rope into a mechanical pull rope, and then grabs the leg-type striker, but lacks a capture structure. Since the launch energy of the leg-type striker is large and the rebound process occurs extremely quickly, the rebound direction will be affected by factors such as the strike angle, vehicle shape, and strike position, and become unpredictable. The mechanical pull rope structure of this capture device is only operated through a single pulley block, and the operational stability is poor. It cannot well control the rebound direction, and it cannot quickly capture. Moreover, the capture device only connects the left and right capture devices through a steel wire rope, and the structure of the capture device is not stable enough. Summary of the invention

[0005] The purpose of the present invention is to provide a capture device and a capture method for a leg-type striker in a pedestrian protection test. In different modes, a trigger signal is input into a control box, and the control box controls the gas tank component and the air path component to start the movement of the cylinder component, and drives the dragging of the traction rope of the leg-type striker and the release of the capture net through the fixed pulley group, thereby realizing the direction control and capture operation of the leg-type striker.

[0006] In order to achieve the above-mentioned object, the present invention provides a rigid contact line surface damage measurement system and method based on visual detection, wherein a capture device of a leg-type striker in a pedestrian protection test comprises:

[0007] A supporting member, the supporting member comprising a frame structure, a plurality of connecting members, a plurality of fixing frames, and a plurality of rope guide rings;

[0008] A control component, the control component includes an air storage tank component, a control air circuit component, and a control box, the control component controls the movable component, wherein the air storage tank component and the control air circuit component are fixed to the frame structure through a fixing frame, and the control box is arranged on the frame structure;

[0009] A movable component, the movable component includes a cylinder component and a fixed pulley component, the movable component drives the capture component to move, the cylinder component is symmetrically arranged on both sides of the frame structure, and the fixed pulley component is symmetrically arranged on both sides of the frame structure;

[0010] A capturing component, comprising a capturing net, a capturing net traction rope, and a leg-type striker traction rope, wherein the leg-type striker traction rope is connected to the frame structure via the rope guide ring, and the leg-type striker traction rope is used for direction control; the capturing net is connected to the frame structure, and the capturing net performs capturing operations.

[0011] In one embodiment, the frame structure includes a top frame, a side frame, and a bottom frame, wherein the top frame, the side frame, and the bottom frame are connected by connecting members, and the bottom frame is provided with a bottom fixing frame and universal wheels;

[0012] The gas tank component includes a main gas tank and a subsidiary gas tank. The main gas tank drives the cylinder, and the subsidiary gas tank provides additional power and reduces air pressure fluctuations. The main gas tank includes a main gas tank air inlet and a main gas tank air outlet, and the subsidiary gas tank includes a subsidiary gas tank air inlet and outlet.

[0013] The control gas circuit components include a gas pressure switch, a cylinder solenoid valve, a brake solenoid valve, and a one-way valve. The internal components of the control gas circuit components are connected by a connector, and the connector is an air pipe;

[0014] The cylinder component includes a cylinder, a cylinder brake, and a cylinder protection plate, wherein the cylinder protection plate is arranged on the outside of the cylinder fixing frame, the cylinder is fixed to the side frame through the cylinder fixing frame, and the cylinder includes a cylinder air inlet;

[0015] The fixed pulley component includes a plurality of fixed pulley blocks, a fixed pulley protection plate, and a fixed pulley fixing frame. The fixed pulley protection plate is arranged outside the fixed pulley fixing frame, and the fixed pulley block is connected to the frame structure through the fixed pulley fixing frame.

[0016] In one embodiment, the gas storage tank component is connected to the control gas circuit component through a connector, and the connector is an air pipe, wherein the air inlet of the main gas storage tank is connected to the air pressure switch, the air pressure switch is connected to the cylinder solenoid valve, the air inlet and outlet of the auxiliary gas storage tank, the cylinder solenoid valve and the brake solenoid valve are connected to one air pipe, the air pipe at the joint is connected to one end of the one-way valve, and the other end of the one-way valve is connected to the air supply source;

[0017] The cylinder component is connected to the gas storage tank component via a connector, and the connector is an air pipe, wherein the air outlet of the main gas storage tank is connected to the air inlet of the cylinder;

[0018] The cylinder component is connected to the control air circuit component via a connector, which is an air pipe, wherein the cylinder brake is arranged at the lower end of the cylinder, and the brake solenoid valve is connected to the cylinder brake.

[0019] In one embodiment, each fixed pulley assembly comprises:

[0020] A first fixed pulley, the first fixed pulley is arranged at the bottom of the cylinder, and the first fixed pulley provides a traction rope for the leg-type striker;

[0021] A second fixed pulley, the second fixed pulley is arranged at the upper end of the cylinder, and the second fixed pulley plays a guiding role;

[0022] A third fixed pulley, the third fixed pulley is arranged at one end of the top frame, and the third fixed pulley plays a reversing role;

[0023] A fourth fixed pulley is arranged at the lower end of the side frame, and the fourth fixed pulley plays a role of reversing and guiding.

[0024] In one embodiment, the first fixed pulley is connected to the first fixed pulley fixing frame, the top of the first fixed pulley fixing frame is connected to the bottom of the cylinder through a connecting piece, the connecting piece is a threaded connecting piece, and the threaded connecting piece is provided with a through hole;

[0025] A leg-type striker traction rope guide pin is provided on the upper portion of the first fixed pulley protection plate, and the leg-type striker traction rope guide pin fixes the position of the leg-type striker traction rope;

[0026] A fixed pulley guide pin is arranged on the side of the first fixed pulley protection plate, and a guide groove is arranged on the side frame, and the fixed pulley guide pin slides in the guide groove of the side frame.

[0027] In one embodiment, the capture member is connected in the following manner:

[0028] One end of the traction rope of the leg-type striker is fixed to the cylinder fixing frame at the bottom of the cylinder, and the other end of the traction rope of the leg-type striker passes through the four fixed pulleys of the fixed pulley group in sequence and is connected to the leg-type striker;

[0029] The upper end of the capture net is fixed to the top frame, the two sides of the capture net are connected to the steel wire ropes of the side frames, the lower end of the capture net is connected to one end of the capture net traction rope, the other end of the capture net traction rope is fixed to the through hole of the threaded connector through a conduit, and the conduit is fixed to the side frame through a fixing frame.

[0030] In one embodiment, the top frame is also provided with an indicator light, according to which the current operating status of the capture device can be judged; the bottom frame is fixed to the ground through a bottom fixing frame, and the bottom fixing frame is provided with multiple slots, and the slots can be processed into different shapes according to the working conditions.

[0031] In one embodiment, the method for capturing the leg-type striker in the pedestrian protection test comprises the following steps:

[0032] S1, the capture device of the leg-type striker of the pedestrian protection test is prepared for inflation, and the air source supplies air;

[0033] S2, the capture device of the leg-type striker of the pedestrian protection test selects a mode, wherein the mode includes a normal mode and a debugging mode, wherein:

[0034] In the normal mode, the control box of the capture device is connected to the launch device of the leg-shaped striker, the launch device of the leg-shaped striker launches the leg-shaped striker and sends a trigger signal to the control box, and the control box performs the next operation;

[0035] In debug mode, the capture device does not need external equipment, and the control box can proceed to the next step;

[0036] S3, the capture device of the leg-type striker in the pedestrian protection test performs direction control and capture operation, the brake solenoid valve is disconnected, the main air tank and the auxiliary air tank jointly drive the cylinder to move downward, and the downward movement of the cylinder drives the capture net traction rope and the leg-type striker traction rope to move simultaneously;

[0037] S4, the capture device of the pedestrian protection test striker is recovered, wherein:

[0038] The capture device of the leg-type striker in the pedestrian protection test is released, the cylinder solenoid valve is disconnected, the brake solenoid valve is disconnected, and the cylinder moves to a fixed position;

[0039] In the pedestrian protection test, the capture device of the leg-type striker is braked, the cylinder solenoid valve is disconnected, the brake solenoid valve is closed, and the cylinder position is fixed.

[0040] In one embodiment, S1 includes:

[0041] S1-1, compressed gas enters from the one-way valve and flows into the auxiliary gas storage tank;

[0042] S1-2, the cylinder solenoid valve is closed, and the gas flows into the main gas tank and the cylinder through the cylinder solenoid valve; the brake solenoid valve is closed, and the gas flows into the cylinder through the brake solenoid valve to brake and prevent the cylinder from moving;

[0043] S1-3, the pressure switch detects the pressure of the main gas tank and the auxiliary gas tank in real time. When the pressure value is sufficient, the indicator light indicates that the device is in the triggering state.

[0044] In one embodiment, S3 includes:

[0045] S3-1, direction control of the leg-type striking traction rope: the leg-type striking traction rope passes through the fixed pulley block and applies a symmetrical upward oblique force to the leg-type striking device, and direction control is performed when the leg-type striking device rebounds;

[0046] S3-2, the capture net performs a capture operation: the capture net traction rope pulls the capture net, and the capture net opens and captures the leg-shaped striker.

[0047] The present invention has the following beneficial effects:

[0048] According to the present invention, a capture device and a capture method for a leg-type striker in a pedestrian protection test, in different modes, a trigger signal is input into the control box, the control box controls the gas tank component and the control air circuit component, so that the cylinder component starts to move, and the fixed pulley group drives the dragging of the leg-type striker traction rope and the release of the capture net, thereby realizing the direction control and capture operation of the leg-type striker. The invention sets a plurality of pulley groups for reversing and guiding operations, and can realize the control of the rebound leg-type striker more accurately. The invention uses the control air circuit component and a plurality of gas tanks to control the airflow and air pressure, and then controls the movement of the cylinder, and can deal with the rebound impact of the leg-type striker in a short time, ensuring the safety of the capture device. The invention also sets a plurality of modes, and can debug the capture device before the test to ensure the continuity of the test. The capture device is stable and reliable, has strong integrity and high synergy, and triggers the cylinder movement with a trigger signal to automatically realize the entire capture process, thereby driving the capture net traction rope and the leg-type striker traction rope to operate in linkage, controlling the rebound direction of the leg-type striker and allowing the capture net to capture the leg-type striker. The capture method is smooth and convenient to operate, and considering the debugging situation during the test, it can reduce the damage rate of the leg-shaped striker and reduce the test cost and time cost. While protecting the leg-shaped striker, the capture device can also avoid injuries to personnel, damage to test equipment and vehicles, and other uncontrollable situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A three-dimensional model diagram of a capture device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0050] Figure 2 A top view of a capture device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0051] Figure 3 A side view of a capture device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0052] Figure 4a A schematic diagram of the assembly of the lower end of a cylinder of a catching device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0053] Figure 4b A schematic diagram of the assembly of the lower end of a cylinder after the lower fixing frame of the cylinder is removed from a capture device of a leg-shaped striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0054] Figure 4c An assembly diagram of a first fixed pulley of a capture device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0055] Figure 5A schematic diagram of the upper end assembly of a cylinder of a catching device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0056] Figure 6 A front view of a capture device of a leg-type striker for a pedestrian protection test according to an embodiment of the present invention is disclosed;

[0057] Figure 7 A flow chart of a method for capturing a leg-shaped striker in a pedestrian protection test according to an embodiment of the present invention is disclosed.

[0058] Reference numerals

[0059] A. Supporting components; A1. Frame structure; B. Control components; B1. Gas tank components; B2. Control gas circuit components; B3. Control box; C. Movable components; C1. Cylinder components; C2. Fixed pulley components; D. Capturing components; 1. Side frame; 2. Top frame; 3. Bottom frame; 4. Frame connector; 5. Main gas tank; 6. Auxiliary gas tank; 7. Control gas circuit component fixing bracket; 8. Air pressure switch; 9. Cylinder solenoid valve; 10. Brake solenoid valve; 11. Check valve; 12. Cylinder; 13. First fixed pulley; 14. Second fixed pulley; 15. Third fixed pulley; 16. Fourth fixed pulley; 17. Cylinder protection plate; 18. Cylinder brake; 19. Leg type 1. The traction rope of the striker; 20. The traction rope of the capture net; 21. The rope guide ring; 22. The wire rope; 23. The capture net; 24. The bottom fixing frame; 25. The universal wheel; 26. The fixing frame of the main gas tank; 27. The fixing frame of the auxiliary gas tank; 28. The air inlet of the main gas tank; 29. ​​The air inlet of the cylinder; 30. The air outlet of the main gas tank; 31. The air inlet and outlet of the auxiliary gas tank; 32. The air pipe; 33. The indicator light; 34. The fixed pulley fixing frame; 35. The threaded connector; 36. The bolt; 37. The fixed pulley protection plate; 38. The fixed pulley guide pin; 39. The traction rope guide pin of the leg-type striker; 40. The catheter fixing clamp; 41. The catheter; 42. The lower fixing frame of the cylinder; 43. The upper fixing frame of the cylinder. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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 invention and are not used to limit the invention.

[0061] like Figure 1As shown, the present invention provides a capture device for a leg-type striker in a pedestrian protection test, comprising a support member A, a control member B, a movable member C, and a capture member D. The support member A comprises a frame structure A1, a plurality of connectors, a plurality of fixing frames, and a plurality of rope guide rings 21. The control member B comprises an air storage tank component B1, a control air circuit component B2, and a control box B3. The control member B controls the movable member C. The air storage tank component B1 and the control air circuit component B2 are fixed on the frame structure A1 through a fixing frame, and the control box B3 is arranged on the frame structure A1. The movable member C comprises a cylinder component C1 and a fixed pulley component C2, and the movable member C drives the capture member D to move. The cylinder component C1 is symmetrically arranged on both sides of the frame structure A1, and the fixed pulley group is symmetrically arranged on both sides of the frame structure A1. The capture member D comprises a capture net 23, a capture net traction rope 20, and a leg-type striker traction rope 19, wherein the leg-type striker traction rope 19 is connected to the frame structure A1 through a rope guide ring 21, and the leg-type striker traction rope 19 is controlled in direction. The capturing net 23 is connected to the frame structure A1, and the capturing net 23 performs a capturing operation.

[0062] like Figure 2As shown, in this embodiment, the frame structure A1 includes a top frame 2, a side frame 1, and a bottom frame 3. The top frame 2, the side frame 1, and the bottom frame 3 are connected by connectors, and the bottom frame 3 is provided with a bottom fixing frame 24 and a universal wheel 25. The air tank component B1 includes a main air tank 5 and an auxiliary air tank 6. The main air tank 5 drives the cylinder 12, and the auxiliary air tank 6 provides additional power and reduces air pressure fluctuations. The main air tank 5 includes a main air tank air inlet 28 and a main air tank air outlet 30, and the auxiliary air tank 6 includes an auxiliary air tank air inlet and outlet 31. The control air circuit component B2 includes an air pressure switch 8, a cylinder solenoid valve 9, a brake solenoid valve 10, and a one-way valve 11. The internal components of the control air circuit component B2 are connected by connectors, and the connector is an air pipe 32. The cylinder component C1 includes a cylinder 12, a cylinder brake 18, and a cylinder protection plate 17. The cylinder protection plate 17 is arranged on the outside of the cylinder fixing frame, and the cylinder 12 is fixed to the side frame 1 through the cylinder fixing frame. The cylinder 12 includes a cylinder air inlet 29. The fixed pulley component C2 includes a plurality of fixed pulley blocks, a fixed pulley protection plate 37, and a fixed pulley fixing frame 34. The fixed pulley protection plate 37 is arranged outside the fixed pulley fixing frame 34, and the fixed pulley block is connected to the frame structure A1 through the fixed pulley fixing frame 34. In this embodiment, the connecting member between the top frame 2, the side frame 1 and the bottom frame 3 is a frame connecting member 4, and the frame connecting member 4 is fixed between the frames in a triangular shape to increase the stability of the supporting member. The main gas tank 5 is fixed to the top frame 2 through the main gas tank fixing frame 26, the auxiliary gas tank 6 is fixed to the top frame 2 through the auxiliary gas tank fixing frame 27, and the control gas path component B2 is fixed to the top frame 2 through the control gas path component fixing frame 7. The cylinder 12 is fixed to the side frame 1 through a cylinder fixing frame, and the cylinder fixing frame is divided into a cylinder lower fixing frame 42 and a cylinder upper fixing frame 43. The cylinder lower fixing frame 42 and the cylinder upper fixing frame 43 are fixed to the side frame 1 through bolts 36. The auxiliary air storage tank 6 has only one air port, which is the auxiliary air storage tank air inlet and outlet 31. The cylinder solenoid valve and the brake solenoid valve are both two-position three-way vacuum solenoid valves, and the pressure switch is a vacuum pressure switch.

[0063] In this embodiment, the gas tank component B1 is connected to the control gas circuit component B2 through a connector, which is an air pipe 32. Among them, the main gas tank air inlet 28 is connected to the air pressure switch 8, the air pressure switch 8 is connected to the cylinder solenoid valve 9, the auxiliary gas tank air inlet and outlet 31, the cylinder solenoid valve 9 and the brake solenoid valve 10 are connected to an air pipe 32, and the air pipe 32 at the joint is connected to one end of the one-way valve 11, and the other end of the one-way valve 11 is connected to the air supply source. Figure 5 The figure shows the assembly drawing of the upper end of the cylinder. Figure 4aIt is an assembly diagram of the lower end of the cylinder. The cylinder component C1 is connected to the gas tank component B1 through a connector, and the connector is an air pipe 32. Among them, the main gas tank air outlet 30 is connected to the cylinder air inlet 29. The cylinder component C1 is connected to the control air circuit component B2 through a connector, and the connector is an air pipe 32. Among them, the cylinder brake 18 is arranged at the lower end of the cylinder 12, and the brake solenoid valve 10 is connected to the cylinder brake 18. In this embodiment, the auxiliary gas tank air inlet and outlet 31, the cylinder solenoid valve 9 and the brake solenoid valve 10 are connected to an air pipe 32, and the air pipe 32 at the joint is a T-shaped structure. The air pipe 32 at the joint is horizontally connected to one end of the one-way valve 11, and the air pipe 32 at the joint is longitudinally connected to the cylinder brake 18. The air supply source is compressed air, and high-purity nitrogen can also be used.

[0064] like Figure 3 As shown, in this embodiment, each fixed pulley group includes a first fixed pulley 13, a second fixed pulley 14, a third fixed pulley 15 and a fourth fixed pulley 16. Among them, the first fixed pulley 13 is arranged at the bottom of the cylinder 12, and the first fixed pulley 13 provides a leg-type striker traction rope 19. The second fixed pulley 14 is arranged at the upper end of the cylinder 12, and the second fixed pulley 14 plays a guiding role. The third fixed pulley 15 is arranged at one end of the top frame 2, and the third fixed pulley 15 plays a reversing role. The fourth fixed pulley 16 is arranged at the lower end of the side frame 1, and the fourth fixed pulley 16 plays a reversing and guiding role. Preferably, the fixed pulley group is divided into two groups symmetrically on both sides of the support frame, and each group is composed of the first fixed pulley, the second fixed pulley, the third fixed pulley and the fourth fixed pulley, and the fixed pulley group controls the traction direction of the leg-type striker traction rope.

[0065] like Figure 4a , Figure 4b and Figure 4c As shown, the first fixed pulley 13 is connected to the first fixed pulley 13 fixing frame, and the top of the first fixed pulley 13 fixing frame is connected to the bottom of the cylinder 12 through a connecting piece, and the connecting piece is a threaded connecting piece 35, and the threaded connecting piece 35 is provided with a through hole. The upper part of the first fixed pulley 13 protection plate is provided with a leg-type striker traction rope guide pin 39, and the leg-type striker traction rope guide pin 39 fixes the position of the leg-type striker traction rope 19. The side of the first fixed pulley 13 protection plate is provided with a fixed pulley guide pin 38, and the side frame 1 is provided with a guide groove, and the fixed pulley guide pin 38 slides in the guide groove of the side frame 1.

[0066] In this embodiment, Figure 6As shown, the connection method of the capture member D is that one end of the leg-type striker traction rope 19 is fixed to the cylinder fixing frame at the bottom of the cylinder 12, and the other end of the leg-type striker traction rope 19 passes through the four fixed pulleys of the fixed pulley group in sequence and is connected to the leg-type striker. The upper end of the capture net 23 is fixed to the top frame 2, and the two sides of the capture net 23 are connected to the steel wire rope 22 of the side frame 1. The lower end of the capture net 23 is connected to one end of the capture net traction rope 20, and the other end of the capture net traction rope 20 is fixed to the through hole of the threaded connector 35 through the conduit 41, and the conduit 41 is fixed to the side frame 1 through the fixing frame. In this embodiment, preferably, a fixing frame is installed on the side frame, and the fixing frame is a clampable conduit fixing clamp, and the fixing clamp clamps the conduit, and the conduit is a U-shaped conduit.

[0067] In this embodiment, the top frame 2 is also provided with an indicator light 33, and the current operating state of the capture device can be judged according to the indicator light 33. The bottom frame 3 is fixed to the ground through a bottom fixing frame, and the bottom fixing frame is provided with a plurality of notches, which can be processed into different shapes according to working conditions.

[0068] In one embodiment, Figure 7 As shown, the capturing method of the leg-type striker for pedestrian protection test includes the following steps: S1, the capturing device of the leg-type striker for pedestrian protection test is prepared for inflation, and the air source supplies air. S2, the capturing device of the leg-type striker for pedestrian protection test selects different modes, and the modes include normal mode and debugging mode. Among them, in normal mode, the control box B3 of the capturing device is connected to the launching device of the leg-type striker, the launching device of the leg-type striker launches the leg-type striker and sends a trigger signal to the control box B3, and the control box B3 performs the next operation. In the debugging mode, the capturing device does not require an external device in the debugging mode, and the control box B3 can perform the next operation. S3, the capturing device of the leg-type striker for pedestrian protection test performs direction control and capturing operation, the brake solenoid valve 10 is disconnected, the main air tank 5 and the auxiliary air tank 6 jointly drive the cylinder to move downward, and the downward movement of the cylinder drives the capture net traction rope 20 and the leg-type striker traction rope 19 to move simultaneously. S4, the capture device of the pedestrian protection test striker is recovered, wherein, if the cylinder position needs to be restored, the capture device of the leg-type striker of the pedestrian protection test is released, the cylinder solenoid valve 9 is disconnected, the brake solenoid valve 10 is disconnected, and the cylinder moves to a fixed position. If the cylinder position does not need to be restored, the capture device of the leg-type striker of the pedestrian protection test is braked, the cylinder solenoid valve 9 is disconnected, the brake solenoid valve 10 is closed, and the cylinder position is fixed. In the preferred embodiment of the present invention, the difference between the normal mode and the debugging mode lies in the different sources of the trigger signal. The trigger signal in the normal mode comes from the transmitting device of the leg-type striker, and this mode transmits a high and low level signal through the radio frequency line. The trigger signal in the debugging mode comes from the internal signal of the control box of the capture device, and in this mode, it can be checked whether the capture device can operate normally.

[0069] In this embodiment, S1 includes S1-1, compressed gas enters from the one-way valve 11 and flows into the auxiliary gas tank 6. S1-2, the cylinder solenoid valve 9 is closed, and the gas flows into the main gas tank 5 and the cylinder 12 through the cylinder solenoid valve 9. The brake solenoid valve 10 is closed, and the gas flows into the cylinder brake 18 through the brake solenoid valve 10 to prevent the movement of the cylinder 12. S1-3, the pressure switch detects the pressure of the main gas tank 5 and the auxiliary gas tank 6 in real time. When the pressure value is sufficient, the indicator light 33 indicates that the device is in a triggering state.

[0070] In this embodiment, S3 includes S3-1, the leg-type striking traction rope performs direction control: the leg-type striking traction rope passes through the fixed pulley block and applies a symmetrical upward force to the leg-type striker, and performs direction control when the leg-type striker rebounds. S3-2, the capture net performs a capture operation: the capture net traction rope 20 pulls the capture net, and the capture net opens and captures the leg-type striker.

[0071] The operation method of a capture device and a capture method of a leg-shaped striker for a pedestrian protection test according to an embodiment of the present invention is as follows:

[0072] First, install the capture device of the leg-type striker in the pedestrian protection test. Assemble the top frame, side frame, and bottom frame into a support member through connectors, and fix the bottom frame to the ground. Assemble the control member, movable member, and capture member to the support member through connectors. Among them, one end of the traction rope of the leg-type striker is fixed to the cylinder fixing frame at the bottom of the cylinder, and the other end of the traction rope of the leg-type striker passes through the four fixed pulleys of the fixed pulley group in sequence and is connected to the leg-type striker. Fix the upper end of the capture net to the top frame, connect the two sides of the capture net to the steel wire rope of the side frame, and connect the lower end of the capture net to one end of the capture net traction rope.

[0073] Secondly, the capture device of the leg-type striker in the pedestrian protection test is prepared for inflation. The air inlet of the cylinder is connected to the air outlet of the main air tank, the air inlet of the main air tank is connected to the control air circuit component, the air inlet and outlet of the auxiliary air tank are connected to the control air circuit component, the cylinder brake is connected to the control air circuit component, and the control air circuit component is connected to the air supply source. The compressed gas enters from the one-way valve and flows into the auxiliary air tank. The cylinder solenoid valve is closed, and the gas flows into the main air tank and the cylinder through the cylinder solenoid valve; the brake solenoid valve is closed, and the gas flows into the cylinder brake through the brake solenoid valve to prevent the cylinder from moving. The pressure switch detects the pressure of the main air tank and the auxiliary air tank in real time. When the pressure value is sufficient, the indicator light indicates that the equipment is in the triggering state.

[0074] Secondly, the capture device of the leg-shaped striker in the pedestrian protection test selects different modes according to the working conditions. In the normal mode, the control box of the capture device is connected to the launch device of the leg-shaped striker, the launch device of the leg-shaped striker launches the leg-shaped striker and sends a trigger signal to the control box, and the control box performs subsequent operations; in the debugging mode, the capture device does not need external equipment, and the control box can perform subsequent operations.

[0075] Secondly, the capture device of the leg-type striker in the pedestrian protection test performs direction control and capture operations. The brake solenoid valve is disconnected, and the main air tank and the auxiliary air tank jointly drive the cylinder to move downward. The downward movement of the cylinder drives the capture net traction rope and the leg-type striker traction rope to move simultaneously. The leg-type striker traction rope passes through the fixed pulley block and applies a symmetrical upward oblique force to the leg-type striker, and performs direction control when the leg-type striker rebounds. The capture net traction rope pulls the capture net, and the capture net opens and captures the leg-type striker.

[0076] Finally, the capture device of the pedestrian protection test striker is recovered. If the cylinder position needs to be restored, the capture device of the pedestrian protection test leg striker is released, the cylinder solenoid valve is disconnected, the brake solenoid valve is disconnected, and the cylinder moves to a fixed position. If the cylinder position does not need to be restored, the capture device of the pedestrian protection test leg striker is braked, the cylinder solenoid valve is disconnected, the brake solenoid valve is closed, and the cylinder position is fixed.

[0077] The present invention has the following beneficial effects:

[0078] According to the present invention, a capture device and a capture method for a leg-type striker in a pedestrian protection test, in different modes, a trigger signal is input into the control box, the control box controls the gas tank component and the control air circuit component, so that the cylinder component starts to move, and the fixed pulley group drives the dragging of the leg-type striker traction rope and the release of the capture net, thereby realizing the direction control and capture operation of the leg-type striker. The invention sets a plurality of pulley groups for reversing and guiding operations, and can realize the control of the rebound leg-type striker more accurately. The invention uses the control air circuit component and a plurality of gas tanks to control the airflow and air pressure, and then controls the movement of the cylinder, and can deal with the rebound impact of the leg-type striker in a short time, ensuring the safety of the capture device. The invention also sets a plurality of modes, and can debug the capture device before the test to ensure the continuity of the test. The capture device is stable and reliable, has strong integrity and high synergy, and triggers the cylinder movement with a trigger signal to automatically realize the entire capture process, thereby driving the capture net traction rope and the leg-type striker traction rope to operate in linkage, controlling the rebound direction of the leg-type striker and allowing the capture net to capture the leg-type striker. The capture method is smooth and convenient to operate, and considering the debugging situation during the test, it can reduce the damage rate of the leg-shaped striker and reduce the test cost and time cost. While protecting the leg-shaped striker, the capture device can also avoid injuries to personnel, damage to test equipment and vehicles, and other uncontrollable situations.

[0079] It should be noted that, unless otherwise clearly specified and limited, the words "install", "connect", "connection" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0080] The above-described embodiments are only further explanations of the present invention, and are not intended to limit the present invention in other forms. The present invention may also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the protection scope of the present invention.

Claims

1. A capture device for a leg-type striker in a pedestrian protection test, characterized in that: The capturing device of the leg-type striker of the pedestrian protection test comprises: A supporting member, the supporting member comprising a frame structure, a plurality of connecting members, a plurality of fixing frames, and a plurality of rope guide rings; A control component, the control component includes an air storage tank component, a control air circuit component, and a control box, the control component controls the movable component, wherein the air storage tank component and the control air circuit component are fixed to the frame structure through a fixing frame, and the control box is arranged on the frame structure; A movable component, the movable component includes a cylinder component and a fixed pulley component, the movable component drives the capture component to move, the cylinder component is symmetrically arranged on both sides of the frame structure, and the fixed pulley component is symmetrically arranged on both sides of the frame structure; A capturing component, comprising a capturing net, a capturing net traction rope, and a leg-type striker traction rope, wherein the leg-type striker traction rope is connected to the frame structure via the rope guide ring, and the leg-type striker traction rope is used for direction control; the capturing net is connected to the frame structure, and the capturing net performs capturing operations.

2. The catching device of the leg-type striker in the pedestrian protection test according to claim 1 is characterized in that: The frame structure comprises a top frame, a side frame and a bottom frame, wherein the top frame, the side frame and the bottom frame are connected by connecting pieces, and the bottom frame is provided with a bottom fixing frame and universal wheels; The gas tank component includes a main gas tank and a subsidiary gas tank. The main gas tank drives the cylinder, and the subsidiary gas tank provides additional power and reduces air pressure fluctuations. The main gas tank includes a main gas tank air inlet and a main gas tank air outlet, and the subsidiary gas tank includes a subsidiary gas tank air inlet and outlet. The control gas circuit components include a gas pressure switch, a cylinder solenoid valve, a brake solenoid valve, and a one-way valve. The internal components of the control gas circuit components are connected by a connector, and the connector is an air pipe; The cylinder component includes a cylinder, a cylinder brake, and a cylinder protection plate, wherein the cylinder protection plate is arranged on the outside of the cylinder fixing frame, the cylinder is fixed to the side frame through the cylinder fixing frame, and the cylinder includes a cylinder air inlet; The fixed pulley component includes a plurality of fixed pulley blocks, a fixed pulley protection plate, and a fixed pulley fixing frame. The fixed pulley protection plate is arranged outside the fixed pulley fixing frame, and the fixed pulley block is connected to the frame structure through the fixed pulley fixing frame.

3. The catching device of the leg-type striker for pedestrian protection test according to claim 2 is characterized in that: The gas storage tank component is connected to the control gas circuit component through a connector, and the connector is an air pipe, wherein the air inlet of the main gas storage tank is connected to the air pressure switch, the air pressure switch is connected to the cylinder solenoid valve, the air inlet and outlet of the auxiliary gas storage tank, the cylinder solenoid valve and the brake solenoid valve are connected to one air pipe, the air pipe at the joint is connected to one end of the one-way valve, and the other end of the one-way valve is connected to the air supply source; The cylinder component is connected to the gas storage tank component via a connector, and the connector is an air pipe, wherein the gas outlet of the main gas storage tank is connected to the gas inlet of the cylinder; The cylinder component is connected to the control air circuit component via a connector, which is an air pipe, wherein the cylinder brake is arranged at the lower end of the cylinder, and the brake solenoid valve is connected to the cylinder brake.

4. The catching device of the leg-type striker in the pedestrian protection test according to claim 2 is characterized in that: Each fixed pulley block includes: A first fixed pulley, the first fixed pulley is arranged at the bottom of the cylinder, and the first fixed pulley provides a traction rope for the leg-type striker; A second fixed pulley, the second fixed pulley is arranged at the upper end of the cylinder, and the second fixed pulley plays a guiding role; A third fixed pulley, the third fixed pulley is arranged at one end of the top frame, and the third fixed pulley plays a reversing role; A fourth fixed pulley is arranged at the lower end of the side frame, and the fourth fixed pulley plays a role of reversing and guiding.

5. The catching device of the leg-type striker in the pedestrian protection test according to claim 4 is characterized in that: The first fixed pulley is connected to the first fixed pulley fixing frame, the top of the first fixed pulley fixing frame is connected to the bottom of the cylinder through a connecting piece, the connecting piece is a threaded connecting piece, and the threaded connecting piece is provided with a through hole; A leg-type striker traction rope guide pin is provided on the upper portion of the first fixed pulley protection plate, and the leg-type striker traction rope guide pin fixes the position of the leg-type striker traction rope; A fixed pulley guide pin is arranged on the side of the first fixed pulley protection plate, and a guide groove is arranged on the side frame, and the fixed pulley guide pin slides in the guide groove of the side frame.

6. The catching device of the leg-type striker in the pedestrian protection test according to claim 2 is characterized in that: The connection mode of the capture member is: One end of the traction rope of the leg-type striker is fixed to the cylinder fixing frame at the bottom of the cylinder, and the other end of the traction rope of the leg-type striker passes through the four fixed pulleys of the fixed pulley group in sequence and is connected to the leg-type striker; The upper end of the capture net is fixed to the top frame, the two sides of the capture net are connected to the steel wire ropes of the side frames, the lower end of the capture net is connected to one end of the capture net traction rope, the other end of the capture net traction rope is fixed to the through hole of the threaded connector through a conduit, and the conduit is fixed to the side frame through a fixing frame.

7. The catching device of the leg-type striker in the pedestrian protection test according to claim 2 is characterized in that: The top frame is also provided with an indicator light, according to which the current operating status of the capture device can be judged; The bottom frame is fixed to the ground via a bottom fixing frame, and the bottom fixing frame is provided with a plurality of notches, and the notches can be processed into different shapes according to working conditions.

8. A method for capturing a leg-type striker in a pedestrian protection test, characterized in that: The capturing method of the leg-type striker in the pedestrian protection test comprises the following steps: S1, the capture device of the leg-type striker of the pedestrian protection test is prepared for inflation, and the air source supplies air; S2, the capture device of the leg-type striker of the pedestrian protection test selects a mode, wherein the mode includes a normal mode and a debugging mode, wherein: In the normal mode, the control box of the capture device is connected to the launch device of the leg-shaped striker, the launch device of the leg-shaped striker launches the leg-shaped striker and sends a trigger signal to the control box, and the control box performs the next operation; In debug mode, the capture device does not need external equipment, and the control box can proceed to the next step; S3, the capture device of the leg-type striker in the pedestrian protection test performs direction control and capture operation, the brake solenoid valve is disconnected, the main air tank and the auxiliary air tank jointly drive the cylinder to move downward, and the downward movement of the cylinder drives the capture net traction rope and the leg-type striker traction rope to move simultaneously; S4, the capture device of the pedestrian protection test striker is recovered, wherein: The capture device of the leg-type striker in the pedestrian protection test is released, the cylinder solenoid valve is disconnected, the brake solenoid valve is disconnected, and the cylinder moves to a fixed position; In the pedestrian protection test, the capture device of the leg-type striker is braked, the cylinder solenoid valve is disconnected, the brake solenoid valve is closed, and the cylinder position is fixed.

9. The method for capturing a leg-shaped striker for a pedestrian protection test according to claim 8, characterized in that: S1 includes: S1-1, compressed gas enters from the one-way valve and flows into the auxiliary gas storage tank; S1-2, the cylinder solenoid valve is closed, and the gas flows into the main gas tank and the cylinder through the cylinder solenoid valve; the brake solenoid valve is closed, and the gas flows into the cylinder through the brake solenoid valve to brake and prevent the cylinder from moving; S1-3, the pressure switch detects the pressure of the main gas tank and the auxiliary gas tank in real time. When the pressure value is sufficient, the indicator light indicates that the device is in the triggering state.

10. The method for capturing a leg-shaped striker for a pedestrian protection test according to claim 8, characterized in that S3 include: S3-1, direction control of the leg-type striking traction rope: the leg-type striking traction rope passes through the fixed pulley block and applies a symmetrical upward oblique force to the leg-type striking device, and direction control is performed when the leg-type striking device rebounds; S3-2, the capture net performs a capture operation: the capture net traction rope pulls the capture net, and the capture net opens and captures the leg-shaped striker.

Images