Vehicle safety performance testing device and method

Abstract

The application discloses a vehicle safety performance testing device and method, and belongs to the technical field of vehicle testing. The vehicle safety performance testing device comprises a main base plate, a test road arranged on the main base plate, a crashed dummy vehicle arranged on the test road and a protector arranged on the main base plate. The protector comprises an air bag which can be filled with gas after the crashed dummy vehicle is hit and abuts against the crashed dummy vehicle. The application can meet the actual crash test of a test vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle testing technology, and in particular to a vehicle safety performance testing device and method. Background Technology

[0002] In the research of autonomous vehicles, companies typically construct virtual road scenarios and traffic targets in simulation software to provide virtual signal inputs for autonomous vehicles and conduct tests on typical scenarios.

[0003] In existing technologies, when a vehicle needs to undergo a crash test, the crash test is usually simulated in simulation software.

[0004] However, collision tests in simulation software deviate from actual conditions to some extent, and the test results in simulation software cannot fully and accurately reflect the actual test results. Summary of the Invention

[0005] The purpose of this invention is to provide a vehicle safety performance testing device and method to solve the technical problem that existing collision tests in simulation software deviate from actual conditions and cannot fully and accurately reflect the actual test results.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows:

[0007] Vehicle safety performance testing equipment includes:

[0008] main substrate;

[0009] The test path is set on the main substrate;

[0010] The dummy car that was supposed to be hit was set up on the test road;

[0011] A protector is disposed on the main base plate. The protector includes an inflatable bag that is able to fill with gas and come into contact with the dummy vehicle after it is hit.

[0012] Optionally, the vehicle safety performance testing device further includes a temperature controller capable of heating the test road; and / or

[0013] Low temperature alarm.

[0014] Optionally, the temperature controller includes:

[0015] The temperature control alarm box is internally provided with a temperature control alarm assembly and a heating instrument. When the temperature of the test road is lower than a first set temperature, the temperature control alarm assembly can control the heating instrument to heat. When the temperature of the test road is lower than a second set temperature, the temperature control alarm assembly can issue a low-temperature alarm. The first set temperature is greater than the second set temperature.

[0016] A temperature transmission block is arranged in the temperature control alarm box and in contact with the main substrate. The temperature transmission block can realize heat transmission between the temperature control alarm box and the main substrate.

[0017] Optionally, the temperature control alarm assembly comprises:

[0018] A liquid storage tank is arranged in the temperature control alarm box. The liquid storage tank stores thermal expansion liquid. The temperature transmission block can perform heat transmission with the liquid storage tank.

[0019] A floating plate is arranged in the liquid storage tank and floats on the surface of the thermal expansion liquid.

[0020] A heating intensity and alarm control circuit comprises a heating intensity control circuit and a low-temperature alarm circuit. The floating plate can float on the surface of the thermal expansion liquid to control the heating intensity control circuit to adjust the heating intensity of the heating instrument. When the temperature of the test road is lower than the second set temperature, the floating plate can control the low-temperature alarm circuit to be connected.

[0021] Optionally, the temperature control alarm assembly further comprises an adjustment temperature control handle. One end of the adjustment temperature control handle is located outside the liquid storage tank, and the other end is sealed into the liquid storage tank and extends into the thermal expansion liquid. The length of the adjustment temperature control handle extending into the liquid storage tank is adjustable.

[0022] Optionally, the protector comprises:

[0023] A protector box;

[0024] An electric cylinder is arranged in the protector box. The output end of the electric cylinder is provided with a sealing push plate.

[0025] A gas feeding tank is arranged in the protector box. The sealing push plate is arranged in the gas feeding tank.

[0026] A gas guide pipe is in communication with the gas feeding tank at one end and in communication with the inflatable bag at the other end. The electric cylinder can drive the sealing push plate to reciprocally move to charge the gas in the gas feeding tank into the inflatable bag.

[0027] Optionally, the protector further comprises a sensing control assembly arranged in the protector box and connected with the crashed dummy vehicle, wherein the vibration of the crashed dummy vehicle can be transmitted to the sensing control assembly, and the sensing control assembly can control the electric cylinder to start after sensing the vibration of the crashed dummy vehicle.

[0028] Optionally, the sensing control assembly comprises:

[0029] a sensing control box arranged in the protector box and connected with the crashed dummy vehicle;

[0030] a fixed guide plate fixedly arranged in the sensing control box;

[0031] a floating guide plate floatingly arranged in the sensing control box;

[0032] an electric cylinder control circuit, one end of the electric cylinder control circuit being connected with the fixed guide plate, and the other end of the electric cylinder control circuit being connected with the floating guide plate;

[0033] The sensing control assembly is configured to transmit the vibration of the crashed dummy vehicle to the sensing control box, the floating guide plate floatingly connected with the fixed guide plate in the sensing control box, and the electric cylinder control circuit forming a communication loop and controlling the electric cylinder to start.

[0034] Optionally, the vehicle safety performance testing device further comprises a slope adjusting assembly arranged on the side of the main base plate away from the test road, for adjusting the slope of the main base plate.

[0035] Optionally, the slope adjusting assembly comprises:

[0036] a passive adjusting piece, one side surface of the passive adjusting piece being fixedly connected with the side of the main base plate away from the test road, and the opposite side surface of the passive adjusting piece being a first arc surface;

[0037] an active adjusting piece swing-connected with the first arc surface, the active adjusting piece being capable of swinging the first arc surface along the outer surface of the active adjusting piece.

[0038] Optionally, the outer surface of the active adjusting piece comprises a second arc surface, the first arc surface being capable of being arranged in abutment with the second arc surface and being capable of swinging along the second arc surface.

[0039] Optionally, the first arc surface is provided with an extending piece, and the extending piece is provided with a connecting hole.

[0040] The active adjusting piece comprises:

[0041] The active adjusting piece box body, the extension piece penetrates through and extends into the active adjusting piece box body;

[0042] The swing rod is swingably arranged in the active adjusting piece box body, and the extension piece is swingably connected with the swing rod through the connecting hole.

[0043] Optionally, the active adjusting piece further comprises a swing rod driving piece, which can drive the swing rod to swing relative to the active adjusting piece box body.

[0044] The vehicle safety performance testing method uses the vehicle safety performance testing device to test the vehicle in a collision, and comprises the following steps:

[0045] S1, control the test vehicle to drive to the test road;

[0046] S2, control the test vehicle to hit the hit dummy, and after the hit dummy is hit, the air bag of the protector is filled with gas and abuts against the hit dummy.

[0047] The beneficial effects of the present application are:

[0048] The vehicle safety performance testing device and method provided by the present application can meet the actual collision test of the test vehicle. When the vehicle safety performance testing device is used, the test vehicle is controlled to drive to the test road, and the test vehicle hits the hit dummy. After the hit dummy is hit, the air bag is filled with gas and abuts against the hit dummy, so as to slow down the impact on the hit dummy, so that the hit dummy can be used repeatedly. During the impact process and after the impact is completed, the tester detects various performance indicators of the test vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the present application and the drawings.

[0050] Figure 1 is a front view of the vehicle safety performance testing device provided by the first embodiment of the present application;

[0051] Figure 2 is a schematic view of the internal structure of the temperature controller provided by the first embodiment of the present application;

[0052] Figure 3 is a schematic view of the composition of the temperature control alarm assembly provided by the first embodiment of the present application;

[0053] Figure 4is the internal structure schematic view of the protector provided by the embodiment one of the present application;

[0054] Figure 5 is the component schematic view of the sensing control assembly provided by the embodiment one of the present application;

[0055] Figure 6 is the schematic view of the slope adjusting assembly provided by the embodiment one of the present application and arranged on the main base plate;

[0056] Figure 7 is the structure schematic view of the passive adjusting member provided by the embodiment one of the present application;

[0057] Figure 8 is the external structure schematic view of the active adjusting member provided by the embodiment one of the present application;

[0058] Figure 9 is the internal structure schematic view of the active adjusting member provided by the embodiment one of the present application;

[0059] Figure 10 is the internal structure schematic view of the swing rod driving member provided by the embodiment one of the present application;

[0060] Figure 11 is the flow chart of the vehicle safety performance test provided by the embodiment two of the present application.

[0061] In the figure:

[0062] 1, main base plate; 11, lower position resisting plate;

[0063] 2, test road;

[0064] 3, hit fake car;

[0065] 4, protector; 41, protector box body; 42, electric cylinder; 421, sealing push plate; 43, gas sending box; 44, gas guide pipe; 45, gas filling bag; 46, sensing control assembly; 461, sensing control box; 462, fixed guide plate; 4621, first electrically conductive column; 4622, second electrically conductive column; 4623, third electrically conductive column; 4624, fourth electrically conductive column; 463, floating guide plate; 4631, transverse electrically conductive sheet; 4632, longitudinal electrically conductive sheet; 4633, third return elastic member; 4634, second return elastic member; 4635, fourth return elastic member; 4636, fifth return elastic member; 464, electric cylinder control circuit; 4641, second power supply; 4642, switch; 4643, electric cylinder controller; 47, vibration cross rod;

[0066] 5, temperature controller;

[0067] 51, temperature control alarm box; 511, temperature control alarm assembly; 5111, temperature control handle; 5112, liquid storage tank; 5113, floating plate; 51131, longitudinal follow-up rod; 51132, transverse follow-up rod; 51133, pointer piece; 51141, heating intensity control circuit; 511411, long resistance; 511412, heating instrument controller; 51142, low temperature alarm circuit; 511421, first power supply; 511422, alarm instrument; 511423, first guide piece; 511424, second guide piece; 511425, first conductive plate; 511426, first return elastic member; 511427, fixed resistance; 512, heating instrument;

[0068] 52, temperature transmission block;

[0069] 6, slope adjustment assembly; 61, passive adjustment member; 611, extension piece; 612, connecting hole;

[0070] 62, active adjustment member; 621, active adjustment member box; 6211, guide rail; 6212, strip-shaped slot; 622, swing rod; 6221, square piece; 623, swing rod driving member; 6231, collar; 624, movable displacement plate; 6241, fixed pivot; 6242, guide block; 6243, sixth return elastic member; 6245, first operating rod; 625, swing rod driving member controller; 6251, controller box; 6252, second operating rod; 62531, third guide piece; 62532, third power supply; 62533, hydraulic cylinder controller; 62534, fourth guide piece. DETAILED DESCRIPTION

[0071] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the present application will be further described below in conjunction with the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described here are only used to explain the present application, but not limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all.

[0072] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0073] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] Embodiment one

[0075] Referring to Figures 1-10 , the embodiment provides a vehicle safety performance testing device which can meet the actual crash test of the test vehicle.

[0076] Specifically, referring to Figure 1 , in the embodiment, the vehicle safety performance testing device comprises a main base plate 1, a test road 2, a crashed dummy car 3 and a protector 4.

[0077] The test road 2 is arranged on the main base plate 1.

[0078] The crashed dummy car 3 is arranged on the test road 2. The test vehicle can drive on the test road 2.

[0079] The protector 4 is arranged on the main base plate 1, and the protector 4 comprises an air bag 45 which can be filled with gas and abut against the crashed dummy car 3 after the crashed dummy car 3 is hit.

[0080] In use, the vehicle safety performance testing device controls the test vehicle to drive to the test road 2, and the test vehicle hits the crashed dummy car 3. After the crashed dummy car 3 is hit, the air bag 45 is filled with gas and abuts against the crashed dummy car 3, so as to slow down the impact on the crashed dummy car 3, and the crashed dummy car 3 can be used repeatedly.

[0081] During the impact process and after the impact is completed, the test personnel can detect various performance indicators of the test vehicle. Preferably, the test vehicle is an autonomous vehicle.

[0082] Specifically, referring to Figures 1-3 , in the embodiment, the vehicle safety performance testing device further comprises a temperature controller 5 which can heat the test road 2; and / or

[0083] Low temperature alarm.

[0084] Specifically, in the embodiment, the temperature controller 5 can heat the test road 2 and perform low temperature alarm.

[0085] Further, the temperature controller 5 comprises a temperature control alarm box 51 and a temperature transmission block 52.

[0086] The temperature control alarm box 51 is provided with a temperature control alarm assembly 511 and a heating instrument 512. When the temperature of the test road 2 is lower than a first set temperature, the temperature control alarm assembly 511 can control the heating instrument 512 to generate heat. When the temperature of the test road 2 is lower than a second set temperature, the temperature control alarm assembly 511 can issue a low-temperature alarm. The first set temperature is greater than the second set temperature.

[0087] Specifically, the first set temperature and the second set temperature can be set as needed.

[0088] The temperature transmission block 52 is arranged in the temperature control alarm box 51 and is in contact with the main substrate 1. The temperature transmission block 52 can realize heat transmission between the temperature control alarm box 51 and the main substrate 1. The main substrate 1 can realize heat transmission with the test road 2.

[0089] Specifically, the temperature control alarm assembly 511 includes a liquid storage tank 5112, a floating plate 5113, and a heating intensity and alarm control circuit.

[0090] The liquid storage tank 5112 is arranged in the temperature control alarm box 51, and the liquid storage tank 5112 stores thermal expansion liquid. The temperature transmission block 52 can realize heat transmission with the liquid storage tank 5112. Specifically, the temperature transmission block 52 is arranged in close contact with the liquid storage tank 5112.

[0091] The floating plate 5113 is arranged in the liquid storage tank 5112 and is arranged to float on the surface of the thermal expansion liquid.

[0092] The heating intensity and alarm control circuit includes a heating intensity control circuit 51141 and a low-temperature alarm circuit 51142. The floating plate 5113 can float on the surface of the thermal expansion liquid to control the heating intensity control circuit 51141 to adjust the heating intensity of the heating instrument 512. When the temperature of the test road 2 is lower than the second set temperature, the floating plate 5113 can control the low-temperature alarm circuit 51142 to be connected, thereby issuing a low-temperature alarm and prompting the operator that the temperature is not suitable for collision testing.

[0093] Further specifically, when the thermal expansion liquid expands, the upper surface of the thermal expansion liquid rises, the heating intensity control circuit 51141 is connected, and as the temperature rises, the upper surface of the thermal expansion liquid rises, the heating intensity control circuit 51141 controls the heating intensity to decrease. If the temperature decreases, the upper surface of the thermal expansion liquid decreases, and the heating intensity control circuit 51141 controls the heating intensity to increase.

[0094] When the temperature of the test road 2 is lower than the second set temperature, and the temperature is too low to perform the crash test, the height of the upper surface of the thermal expansion liquid is lowered, so that the low temperature alarm circuit 51142 of the floating plate 5113 is connected. The low temperature alarm circuit 51142 alarms, and the test is not suitable to be performed at this time. At this time, the temperature controller 5 waits until the test road 2 is heated to not lower than the second set temperature, and then the test is performed.

[0095] The floating plate 5113 is located in the liquid storage tank 5112 and is floatingly arranged on the surface of the thermal expansion liquid, and can realize automatic adjustment of the heating intensity of the heating instrument 512. The lower the temperature of the test road 2 is, the greater the heating intensity of the heating instrument 512 is.

[0096] Further, the temperature control alarm assembly 511 further comprises an adjustment temperature control handle 5111, one end of the adjustment temperature control handle 5111 is located outside the liquid storage tank 5112, the other end of the adjustment temperature control handle 5111 is sealed into the liquid storage tank 5112 and extends into the thermal expansion liquid, and the length of the adjustment temperature control handle 5111 extending into the liquid storage tank 5112 is adjustable, so that the liquid level of the thermal expansion liquid can be adjusted, and the lifting adjustment of the floating plate 5113 is realized.

[0097] When the automatic adjustment speed of the heating intensity of the heating instrument 512 by the thermal expansion and contraction of the thermal expansion liquid is slow, the operator can adjust the liquid level in the liquid storage tank 5112 by operating the adjustment temperature control handle 5111, so as to adjust the position of the floating plate 5113, and finally realize the adjustment of the heating intensity of the heating instrument 512.

[0098] Specifically, referring to Figure 3 , the upper end of the floating plate 5113 is provided with a longitudinal follow-up rod 51131, the upper end of the longitudinal follow-up rod 51131 is provided with a transverse follow-up rod 51132, and the right end of the transverse follow-up rod 51132 is fixed with a pointer piece 51133. The heating intensity control circuit 51141 comprises a long strip resistance 511411 and a heating instrument controller 511412. The heating instrument controller 511412 is used to control the heating intensity of the heating instrument 512.

[0099] The pointer piece 51133 is made of conductive material and is triangular, and one vertex thereof is electrically connected with the left side surface of the long strip resistance 511411.

[0100] As shown in the view angle of Figure 3 , the top surface of the long strip resistance 511411 is electrically connected with one end of the heating instrument controller 511413 through a wire, and the other end of the heating instrument controller 511413 is electrically connected with the lower inclined surface of the pointer piece 51133.

[0101] When the pointer 51133 slides up and down along the left side of the elongated resistor 511411, it changes the resistance value of the elongated resistor 511411 connected to the heating intensity control circuit 51141, thereby adjusting the heating intensity. The higher the resistance value of the elongated resistor 511411 connected to the heating intensity control circuit 51141, the greater the heating intensity of the heater 512. It can be understood that the higher the resistance value of the elongated resistor 511411 connected to the heating intensity control circuit 51141, the greater the voltage received by the heater controller 511413, thus resulting in a greater heating intensity of the heater 512.

[0102] The low-temperature alarm circuit 51142 includes an alarm 511422, a first conductive plate 511423, a second conductive plate 511424, and a first conductive plate 511425. When the low-temperature alarm circuit 51142 is in the connected state, the alarm 511422 can sound an alarm.

[0103] The first guide plate 511423 and the second guide plate 511424 are arranged opposite each other, and their heights are flush. The first conductive plate 511425 is connected to the lower surface of the transverse follower rod 51132 through the first return elastic member 511426. The first conductive plate 511425 can move downward with the transverse follower rod 51132 until it is electrically connected to the first guide plate 511423 and the second guide plate 511424 simultaneously.

[0104] When the first conductive plate 511425 moves downward with the lateral follower rod 51132 to be electrically connected to the first guide plate 511423 and the second guide plate 511424 at the same time, the low temperature alarm circuit 51142 is in a connected state, and the alarm 511422 can perform a low temperature alarm.

[0105] Specifically, with Figure 3 Taking the indicated orientation as an example, a fixed resistor 511427 and a first power supply 511421 are connected in series between the lower inclined surface of the pointer piece 51133 and the top surface of the strip resistor 511411 via a wire. The series-connected fixed resistor 511427 and the first power supply 511421 form a power source, which can supply power to the strip resistor 511411 and also to the alarm 511422.

[0106] The top surface of the long resistance 511411 is electrically connected with the top surface of the heating instrument controller 511412 through a wire, the bottom surface of the heating instrument controller 511412 is electrically connected with the lower inclined surface of the pointer piece 51133 through a wire, the left side surface of the first power supply 511421 is electrically connected with the bottom surface of the second guide piece 511424 through a wire, the right side surface of the first power supply 511421 is electrically connected with the right side surface of the alarm instrument 511422 through a wire, the left side surface of the alarm instrument 511422 is electrically connected with the bottom surface of the first guide piece 511423 through a wire, the first guide piece 511423 is located at the left of the second guide piece 511424, the first guide piece 511423 and the second guide piece 511424 are located below the first conductive plate 511425, the top surface of the first conductive plate 511425 is fixedly connected with the bottom end of the first return elastic member 511426, and the top end of the first return elastic member 511426 is fixedly connected with the lower side surface of the horizontal follow-up rod 11.

[0107] The road temperature has a great influence on the braking performance and stability of the vehicle, and the setting of the heating intensity and the alarm control circuit can better meet the test requirements of the test vehicle and better expand the test range. When the temperature is too low, an automatic alarm is given to remind the test personnel.

[0108] In actual use, the temperature of the test road 2 is transmitted to the liquid storage tank 5112 through the main base plate 1 and the temperature transmission block 52 in turn, the test personnel can adjust the position of the temperature control handle 5111 relative to the liquid storage tank 5112 to change the initial positions of the floating plate 5113, the longitudinal follow-up rod 51131, the horizontal follow-up rod 51132 and the pointer piece 51133, and then change the resistance value of the long resistance 511411 connected to the heating intensity control circuit 51141, so as to change the voltage obtained at both ends of the heating instrument controller 511412, thereby realizing the adjustment of the heating intensity and the temperature adjustment function.

[0109] When the external temperature is lower than the expected temperature, the temperature is transmitted to the liquid storage tank 5112 through the temperature transmission block 52. Due to the principle of thermal expansion and cold contraction, the thermal expansion liquid volume shrinks, drives the height of the floating plate 5113 to drop, the horizontal follow-up rod 51132 drives the pointer piece 51133 to move downward, and then the resistance value of the long resistance 511411 connected to the circuit increases, the voltage obtained at both ends of the heating instrument controller 511412 increases, the heating instrument controller 511412 controls the heating instrument 512 to increase the heating intensity, improves the heating temperature, and guarantees the relative stability of the temperature.

[0110] When the temperature further decreases, the first return elastic member 511426 pushes the first conductive plate 511425 downward to be electrically connected with the first guide piece 511423 and the second guide piece 511424 at the same time, the alarm instrument 511422 obtains electricity and gives an alarm to remind that the current temperature is too low and does not meet the test expectation.

[0111] It can be understood that the connection between the temperature control handle 5111 and the liquid storage tank 5112 is a sealed connection to avoid liquid leakage. The more the temperature control handle 5111 extends into the liquid storage tank 5112, the higher the liquid level in the liquid storage tank 5112, and the smaller the access resistance of the long strip resistor 511411.

[0112] Further, referring to Figure 4 and Figure 5 In this embodiment, the protector 4 includes a protector box 41, an electric cylinder 42, a gas feeding box 43, and a gas guide pipe 44.

[0113] The electric cylinder 42 is arranged in the protector box 41, and the output end of the electric cylinder 42 is provided with a sealing push plate 421.

[0114] The gas feeding box 43 is arranged in the protector box 41, and the sealing push plate 421 is arranged in the gas feeding box 43.

[0115] Preferably, a fan is further arranged in the gas feeding box 43, which can continuously blow external air into the gas feeding box 43 to ensure that the sealing push plate 421 can continuously fill gas into the air bag 45.

[0116] One end of the gas guide pipe 44 is in communication with the gas feeding box 43, and the other end is in communication with the air bag 45. The electric cylinder 42 can drive the sealing push plate 421 to reciprocate to fill the gas in the gas feeding box 43 into the air bag 45.

[0117] Specifically, the protector 4 further includes a sensing and control assembly 46, which is arranged in the protector box 41 and connected with the crashed dummy car 3. The vibration of the crashed dummy car 3 can be transmitted to the sensing and control assembly 46, and the sensing and control assembly 46 can control the electric cylinder 42 to start after sensing the vibration of the crashed dummy car 3.

[0118] Specifically, the sensing and control assembly 46 includes a sensing and control box 461, a fixed guide plate 462, a floating guide plate 463, and an electric cylinder control circuit 464.

[0119] The sensing and control box 461 is arranged in the protector box 41 and connected with the crashed dummy car 3.

[0120] The fixed guide plate 462 is fixedly arranged in the sensing and control box 461.

[0121] The floating guide plate 463 is floatingly arranged in the sensing and control box 461.

[0122] One end of the electric cylinder control circuit 464 is connected with the fixed guide plate 462, and the other end is connected with the floating guide plate 463.

[0123] The sensing assembly 46 is configured to transmit the vibration of the crashed dummy car 3 to the sensing box 461, the floating guide plate 463 is floating relative to the sensing box 461 and is in conductive connection with the fixed guide plate 462, and the electric cylinder control circuit 464 forms a communication loop and controls the electric cylinder 42 to start.

[0124] Specifically, the fixed guide plate 462 is provided with a first conductive column 4621, a second conductive column 4622, a third conductive column 4623 and a fourth conductive column 4624.

[0125] The floating guide plate 463 is in the shape of a "cross", including a transverse conductive sheet 4631 and a longitudinal conductive sheet 4632.

[0126] The middle part of the rear side of the transverse conductive sheet 4631 is in contact with the middle part of the front side of the longitudinal conductive sheet 4632. One end of the transverse conductive sheet 4631 is floatingly connected to the inner wall of the sensing box 461 through the second return elastic member 4634, and the other end is floatingly connected to the inner wall of the sensing box 461 through the third return elastic member 4633. One end of the longitudinal conductive sheet 4632 is floatingly connected to the inner wall of the sensing box 461 through the fourth return elastic member 4635, and the other end is floatingly connected to the inner wall of the sensing box 461 through the fifth return elastic member 4636.

[0127] The electric cylinder control circuit 464 includes a second power supply 4641, a switch 4642 and an electric cylinder controller 4643 connected in series through wires. One end of the wire of the electric cylinder control circuit 464 is electrically connected to the transverse conductive sheet 4631, and the other end is electrically connected to the fixed guide plate 462.

[0128] The sensing assembly 46 is connected with the crashed dummy car 3 through the vibration cross rod 47.

[0129] Specifically, as shown in the orientation of Figure 4 and Figure 5 , the right side of the sensing box 461 is fixedly connected with the left end of the vibration cross rod 47, the right end of the vibration cross rod 47 is fixedly connected with the left side of the crashed dummy car 3, the crashed dummy car 3 is arranged on the surface of the measured road 2, and the lower side of the crashed dummy car 3 is in contact with the upper side of the right part of the inflatable belt 45.

[0130] In order to avoid the displacement of the inflatable belt 45 on the main base plate 1, a lower stop plate 11 is arranged on the main base plate 1, the lower side of the inflatable belt 45 is in contact with the upper side of the lower stop plate 11, the rear end of the lower stop plate 11 is fixedly connected with the front side of the main base plate 1, the inner rear side of the sensing box 461 is fixedly provided with a fixed guide plate 462, the front side of the fixed guide plate 462 is provided with a first conductive column 4621, a second conductive column 4622, a third conductive column 4623 and a fourth conductive column 4624, the inner upper side of the sensing box 461 is fixedly provided with a fourth return elastic member 4635, the inner left side of the sensing box 461 is fixedly provided with a second return elastic member 4634, the inner lower side of the sensing box 461 is fixedly provided with a fifth return elastic member 4636, and the inner right side of the sensing box 461 is fixedly provided with a third return elastic member 4633.

[0131] The second return elastic member 4634 and the third return elastic member 4633 are connected with a transverse conductive sheet 4631. The fourth return elastic member 4635 and the fifth return elastic member 4636 are connected with a longitudinal conductive sheet 4632.

[0132] The middle part of the rear side of the transverse conductive sheet 4631 is in contact with the middle part of the front side of the longitudinal conductive sheet 4632, and the right part of the lower side of the transverse conductive sheet 4631 and the right part of the lower side of the fixed guide plate 462 are connected in series through a wire with a second power supply 4641, a switch 4642 and a motor cylinder controller 4643.

[0133] When the test vehicle collides with the crashed dummy car 3, the inflatable belt 45 can be quickly and automatically inflated to reduce the impact damage. Specifically, when the test vehicle collides with the crashed dummy car 3, the vibration is transmitted to the sensing box 461 through the vibrating crossbar 47, the sensing box 461 inside vibrates, the positions of the longitudinal conductive sheet 4632 and the transverse conductive sheet 4631 change relative to the initial positions, the floating guide plate 463 comes into contact with one of the first conductive column 4621, the second conductive column 4622, the third conductive column 4623 and the fourth conductive column 4624, and then the motor cylinder control circuit 464 is connected, the motor cylinder controller 4643 is powered and controls the motor cylinder 42 to work, the moving rod of the motor cylinder 42 pushes the gas in the gas sending box 43 into the inflatable belt 45 through the sealing push plate 421, and the impact of the test vehicle on the crashed dummy car 3 is reduced.

[0134] Further, referring to Figure 6 In the embodiment, the vehicle safety performance test device further comprises a slope adjusting assembly 6 arranged on the side of the main base plate 1 away from the test road 2, for adjusting the slope of the main base plate 1. Thus, the slope of the test road 2 is adjusted.

[0135] Specifically, the slope adjusting assembly 6 comprises a passive adjusting member 61 and an active adjusting member 62.

[0136] The side surface of the passive adjusting piece 61 is fixedly connected to the side of the main base plate 1 away from the test road 2, and the opposite side surface of the passive adjusting piece 61 is a first arc-shaped surface.

[0137] The active adjusting piece 62 is swingably connected to the first arc-shaped surface, and the active adjusting piece 62 can drive the first arc-shaped surface to swing along the outer surface of the active adjusting piece 62.

[0138] Preferably, in the embodiment, the outer surface of the active adjusting piece 62 comprises a second arc-shaped surface, and the first arc-shaped surface can be arranged in abutment with the second arc-shaped surface and can swing along the second arc-shaped surface. Specifically, referring to Figures 7-9 In the embodiment, the first arc-shaped surface is provided with an extending piece 611, and the extending piece 611 is provided with a connecting hole 612.

[0139] The active adjusting piece 62 comprises an active adjusting piece box 621 and a swing rod 622.

[0140] The extending piece 611 passes through the active adjusting piece box 621 and extends into the active adjusting piece box 621.

[0141] Specifically, in actual testing, the active adjusting piece box 621 is fixedly arranged. The second arc-shaped surface can guide the shaking of the first arc-shaped surface. That is, the passive adjusting piece 61 will swing along the second arc-shaped surface.

[0142] The swing rod 622 is swingably arranged in the active adjusting piece box 621, and the extending piece 611 is swingably connected to the swing rod 622 through the connecting hole 612.

[0143] Specifically, the second arc-shaped surface is the front side surface of the active adjusting piece box 621, and the second arc-shaped surface is provided with a strip-shaped groove 6212, and the extending piece 611 passes through the strip-shaped groove 6212 and extends into the active adjusting piece box 621.

[0144] Further, the active adjusting piece 62 further comprises a swing rod driving piece 623, and the swing rod driving piece 623 can drive the swing rod 622 to swing relative to the active adjusting piece box 621.

[0145] Specifically, the end of the output rod of the swing rod driving piece 623 is provided with a sleeve ring 6231, the sleeve ring 6231 is movably sleeved on the outer periphery of the swing rod 622, and the output rod of the swing rod driving piece 623 is actuated, thereby driving the swing rod 622 to swing relative to the active adjusting piece box 621.

[0146] Specifically, referring to Figure 9In order to realize the disengagement of the swing rod 622 from the connecting hole 612, in the embodiment, a movable displacement plate 624 is movably arranged in the active adjusting part box 621, the movable displacement plate 624 can move along a set direction, and can drive the swing rod 622 to disengage from the connecting hole 612, so as to realize the separation of the passive adjusting part 61 and the active adjusting part 62. Specifically, in the embodiment, the set direction is the vertical direction in Figure 9 .

[0147] The movable displacement plate 624 is provided with a fixed rotating shaft 6241, the side surface of the swing rod 622 is provided with a square piece 6221, the square piece 6221 is provided with a circular hole, the square piece 6221 can rotate through the circular hole and pass through the fixed rotating shaft 6241, and the swing rod driving part 623 can drive the swing rod 622 to swing relative to the fixed rotating shaft 6241.

[0148] Specifically, the lower end of the movable displacement plate 624 is provided with a first operating rod 6245, and the first operating rod 6245 penetrates out of the active adjusting part box 621.

[0149] Further, in order to guide the movement of the movable displacement plate 624, a guide rail 6211 extending along the set direction is fixedly arranged in the active adjusting part box 621, and a guide block 6242 cooperating with the guide rail 6211 is fixedly arranged on the movable displacement plate 624.

[0150] Further, after the swing rod 622 disengages from the connecting hole 612, that is, after the passive adjusting part 61 and the active adjusting part 62 are separated, in order to reset the movable displacement plate 624, in the embodiment, a sixth reset elastic member 6243 is arranged between the guide block 6242 and the inner wall of the active adjusting part box 621. Preferably, in the embodiment, the number of the sixth reset elastic member 6243 is two.

[0151] Referring to Figure 9 and Figure 10 , further, in the embodiment, the active adjusting part 62 further comprises a swing rod driving part controller 625.

[0152] The swing rod driving part controller 625 comprises a swing rod driving part controller box 6251, a second operating rod 6252 and a swing rod driving part control circuit. The second operating rod 6252 can be telescoped relative to the controller box 6251 to control the on-off of the swing rod driving part control circuit. When the swing rod driving part control circuit is in the connected state, the swing rod driving part control circuit controls the swing rod driving part 623 to act.

[0153] Specifically, referring to Figure 10The swing rod driving member control circuit comprises a third conductor sheet 62531, a third power supply 62532, a hydraulic cylinder controller 62533 and a fourth conductor sheet 62534 connected in series by wires. The third conductor sheet 62531 and the fourth conductor sheet 62534 are arranged in an up-down spaced manner, and the second operating rod 6252 is provided with a second conductive plate 62521 at one end in the swing rod driving member controller box 6251. When the second operating rod 6252 is extended relative to the controller box 6251, the second conductive plate 62521 is in communication with the third conductor sheet 62531 and the fourth conductor sheet 62534 at the same time, and at this time, the swing rod driving member control circuit is in a connected state. When the second operating rod 6252 is retracted relative to the controller box 6251, the second conductive plate 62521 can be separated from the fourth conductor sheet 62534, so that the swing rod driving member control circuit is in a disconnected state.

[0154] The operator controls the swing rod driving member control circuit to be connected or disconnected by operating the second operating rod 6252, thereby controlling whether the swing rod driving member 623 is actuated, and finally realizing the slope adjustment of the main base plate 1 and the test road 2.

[0155] The swing rod driving member 623 can be a hydraulic cylinder.

[0156] The slope adjustment assembly is provided, which can realize the adjustment of the test slope and the simulation of real road driving oscillation. In the actual test process, the operator pulls down the second operating rod 6252, the second conductive plate 62521 is in contact and communication with the third conductor sheet 62531 and the fourth conductor sheet 62534, the hydraulic cylinder controller 62533 is powered and controls the swing rod driving member 623 to work, the sleeve ring 6231 of the output rod of the swing rod driving member 623 drives the swing rod 622 to swing and oscillate, and then drives the extension piece 611 to drive the passive adjustment member 61, the main base plate 1 and the test road 2 to move, so as to adjust the test slope and simulate the real road driving oscillation, and simulate a more realistic motion environment.

[0157] When the slope adjustment assembly 6 needs to be disassembled, the operator pulls down the first operating rod 6245, drives the swing rod 622 to move downward, and then separates the swing rod 622 from the connecting hole 612.

[0158] Embodiment two

[0159] Referring to Figure 11 The embodiment provides a vehicle safety performance test method, which uses the vehicle safety performance test device of embodiment one to test the vehicle in a collision, and comprises the following steps:

[0160] S1, controlling the test vehicle to drive to the test road 2;

[0161] S2, control the test vehicle to hit the hit dummy car 3, after the hit dummy car 3 is hit, the air bag 45 of the protector 4 is full of gas and abuts against the hit dummy car 3.

[0162] Further, in the embodiment, the vehicle safety performance test method further comprises: adjusting the temperature of the test road 2 by the temperature controller 5.

[0163] Further, in the embodiment, the vehicle safety performance test method further comprises: adjusting the slope of the test road 2 by the slope adjusting assembly 6.

[0164] It can be understood that the adjustment of the temperature of the test road 2 by the temperature controller 5 and the adjustment of the slope of the test road 2 by the slope adjusting assembly 6 can be performed before step S1 or in the control of the test vehicle to hit the hit dummy car 3 in step S2.

[0165] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited to the above embodiments. Various changes and modifications can be made without departing from the spirit and scope of the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for testing the safety performance of a vehicle, characterized by The vehicle safety performance testing device comprises: a main substrate (1); a test road (2) arranged on the main substrate (1); a crashed dummy vehicle (3) arranged on the test road (2); a protector (4) arranged on the main substrate (1), wherein the protector (4) comprises an air bag (45) capable of being filled with gas and abutting against the crashed dummy vehicle (3) after the crashed dummy vehicle (3) is hit; the protector (4) comprises: a protector box (41); an electric cylinder (42) arranged in the protector box (41), wherein an output end of the electric cylinder (42) is provided with a sealing push plate (421); a gas feeding box (43) arranged in the protector box (41), wherein the sealing push plate (421) is arranged in the gas feeding box (43); a gas guide pipe (44) in communication with the gas feeding box (43) at one end and in communication with the air bag (45) at the other end, wherein the electric cylinder (42) is capable of driving the sealing push plate (421) to reciprocally move so as to fill the air bag (45) with the gas in the gas feeding box (43); the protector (4) further comprises a sensing and control assembly (46) arranged in the protector box (41) and connected with the crashed dummy vehicle (3), wherein the vibration of the crashed dummy vehicle (3) can be transmitted to the sensing and control assembly (46), and the sensing and control assembly (46) is capable of controlling the electric cylinder (42) to start after sensing the vibration of the crashed dummy vehicle (3); the sensing and control assembly (46) comprises: a sensing and control box (461) arranged in the protector box (41) and connected with the crashed dummy vehicle (3); a fixed guide plate (462) fixedly arranged in the sensing and control box (461); a floating guide plate (463) floatingly arranged in the sensing and control box (461); an electric cylinder control circuit (464) connected with the fixed guide plate (462) at one end and connected with the floating guide plate (463) at the other end; the sensing and control assembly (46) is configured in such a manner that the vibration of the crashed dummy vehicle (3) is transmitted to the sensing and control box (461), the floating guide plate (463) is floating relative to the sensing and control box (461) and is in conductive connection with the fixed guide plate (462), and the electric cylinder control circuit (464) forms a communication loop and controls the electric cylinder (42) to start.

2. The vehicle safety performance testing device according to claim 1, characterized by The vehicle safety performance testing device further comprises a temperature controller (5) capable of heating the test road (2); and / or low-temperature alarm.

3. The vehicle safety performance testing device of claim 2, wherein the temperature controller (5) comprises: A temperature control alarm box (51) is internally provided with a temperature control alarm assembly (511) and a heating instrument (512). When the temperature of the test road (2) is lower than a first set temperature, the temperature control alarm assembly (511) can control the heating instrument (512) to heat. When the temperature of the test road (2) is lower than a second set temperature, the temperature control alarm assembly (511) can issue a low-temperature alarm. The first set temperature is greater than the second set temperature. A temperature transmission block (52) is arranged in the temperature control alarm box (51) and in contact with the main base plate (1). The temperature transmission block (52) can realize heat transmission between the temperature control alarm box (51) and the main base plate (1).

4. The vehicle safety performance testing device of claim 3, wherein The temperature control alarm assembly (511) comprises: A liquid storage tank (5112) is arranged in the temperature control alarm box (51). The liquid storage tank (5112) stores thermal expansion liquid. The temperature transmission block (52) can perform heat transmission with the liquid storage tank (5112). A floating plate (5113) is located in the liquid storage tank (5112) and is arranged to float on the surface of the thermal expansion liquid. A heating intensity and alarm control circuit comprises a heating intensity control circuit (51141) and a low-temperature alarm circuit (51142). The floating plate (5113) can float on the surface of the thermal expansion liquid to control the heating intensity control circuit (51141) to adjust the heating intensity of the heating instrument (512). When the temperature of the test road (2) is lower than the second set temperature, the floating plate (5113) can control the low-temperature alarm circuit (51142) to be connected.

5. The vehicle safety performance testing device of claim 4, wherein The temperature control alarm assembly (511) further comprises an adjustment temperature control handle (5111). One end of the adjustment temperature control handle (5111) is located outside the liquid storage tank (5112), and the other end is sealed into the liquid storage tank (5112) and extends into the thermal expansion liquid. The length of the adjustment temperature control handle (5111) extending into the liquid storage tank (5112) is adjustable.

6. The vehicle safety performance testing device of claim 1, wherein The vehicle safety performance test device further comprises a slope adjustment assembly (6) arranged on the side of the main base plate (1) away from the test road (2) for adjusting the slope of the main base plate (1).

7. The vehicle safety performance testing device of claim 6, wherein The slope adjustment assembly (6) comprises: A passive adjustment member (61) is fixedly connected to one side surface of the main base plate (1) away from the test road (2). The opposite side surface of the passive adjustment member (61) is a first arc surface. An active adjustment member (62) is swingably connected to the first arc surface. The active adjustment member (62) can drive the first arc surface to swing along the outer surface of the active adjustment member (62).

8. The vehicle safety performance testing device of claim 7, wherein, The outer surface of the active adjustment member (62) comprises a second arc surface. The first arc surface can be arranged in close contact with the second arc surface and can swing along the second arc surface.

9. The vehicle safety performance testing device of claim 7, wherein, An extension piece (611) is arranged on the first arc surface. A connecting hole (612) is arranged on the extension piece (611). The active adjusting member (62) comprises: An active adjusting member box (621), wherein the extending piece (611) penetrates through and extends into the active adjusting member box (621); A swing rod (622) swingingly arranged in the active adjusting member box (621), wherein the extending piece (611) is swingingly connected with the swing rod (622) through the connecting hole (612).

10. The vehicle safety performance testing device of claim 9, wherein, The active adjusting member (62) further comprises a swing rod driving member (623), which can drive the swing rod (622) to swing relative to the active adjusting member box (621).

11. A method of testing the safety performance of a vehicle, characterised by, The vehicle safety performance testing device according to any one of claims 1-10 is used for collision testing of a vehicle, comprising the following steps: S1, controlling the test vehicle to drive to a test road (2); S2, controlling the test vehicle to collide with a collided dummy vehicle (3), wherein after the collided dummy vehicle (3) is collided, the air bag (45) of the protector (4) is filled with gas and abuts against the collided dummy vehicle (3).

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