A test device and method for a bicycle impact on a vehicle

Abstract

The present application belongs to the technical field of vehicle airbag malfunction test, and particularly relates to a test device and method for bicycle impact on vehicle, wherein a frame is provided with a base and universal wheels, the front end of the frame is provided with a left screw rod and a right screw rod, the two screw rods are respectively connected with motors, a lower cross beam is sleeved outside the left screw rod and the right screw rod, the front end of the lower cross beam is provided with a cross screw rod connected with a corresponding motor, and an electromagnet is sleeved outside the cross screw rod, and the end support is attracted on the electromagnet; a traction trolley is fixed at the bottom of the base, and a traction rope locking block is arranged on the traction trolley and connected with the traction trolley, the bottom is provided with a bolt, a stopper is fixed on a traction track, and a stop arm is arranged on the stopper; the present application can cooperate with the traction device and the stopper to realize acceleration and release of the bicycle, complete side bicycle malfunction collision test, and has high efficiency and good test precision.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle airbag misaction test, and particularly relates to a test device and method for bicycle impact on vehicle. BACKGROUND

[0002] In the process of developing automobile products, safety performance is one of the important performances. The airbag is an important component in the passive safety system of the whole vehicle, and its reliability is one of the important indicators for evaluating the quality of the airbag of the automobile. If the airbag is ignited at the wrong time, it will not only cause loss to the consumer, but also cause harm to the passengers in the vehicle. Therefore, in order to prevent the harm to the passengers caused by the mis-ignition of the airbag, the misaction test of the airbag needs to be carried out to verify the performance of the airbag and the calibration and verification of the ignition logic algorithm of the control unit. The bicycle impact test is included in the airbag misaction verification matrix. The bicycle impact test requires that the bicycle is equipped with a weight of 75 kg and impacts the specific position of the side of the vehicle at a speed of 40 km / h. Under this test mode, the airbag and the seat belt pretensioner are required not to be ignited. Therefore, during the bicycle airbag misaction test, a test device is needed which can be connected to the traction system and drive the bicycle to complete the acceleration and release process. At the same time, the device should be able to constrain the forward direction of the bicycle during the acceleration process and release the bicycle at a specific time to complete the impact test.

[0003] The existing test fixture used at present is made of square tubes welded and bolted, the supporting roller is not a universal wheel, the production is single, and it is damaged after each test, resulting in frequent replacement of the test fixture, which cannot be reused, and the test efficiency is low. The front end support for supporting the handlebar of the bicycle is a U-shaped hole, and there is a risk of sliding of the bicycle during travel, which leads to test failure. There is a gap between the U-shaped hole and the handlebar of the bicycle, and the bicycle is easy to deviate from the impact point due to the shaking of the vehicle during travel when the bicycle reaches the impact point, so the test precision is poor. At the same time, the height and left and right of the handle end support cannot be adjusted, and the test vehicle needs to be moved to confirm the impact point again. In general, the current test method is complex to operate, low in efficiency, and poor in test precision. SUMMARY

[0004] In order to overcome the above problems, the present application provides a test device and method for bicycle impact on vehicle; which can cooperate with the traction device and the stopper to realize the acceleration and release of the bicycle, complete the side bicycle misaction impact test, high efficiency, good test precision.

[0005] A test device for bicycle impact on vehicle, comprising a support part 1, a start-stop part 3, an electromagnet 23, a handle end support 24, and a motor system 25.

[0006] The support part 1 includes a frame, a base 11, a universal wheel 14, and a lower cross beam 132; wherein the frame is provided with the base 11 and the universal wheel 14 on the left and right sides of the bottom, respectively, the frame is provided with a left lead screw 261 and a right lead screw 262 on the front ends of the left and right sides, respectively, the left lead screw 261 and the right lead screw 262 are connected with the transmission shafts of the corresponding motors in the motor system 25 fixed on the upper parts of the left and right sides of the frame, respectively, the left and right sides of the lower cross beam 132 are sleeved outside the screw nuts of the left lead screw 261 and the right lead screw 262, respectively, the front end of the lower cross beam 132 is provided with a horizontal lead screw 263, the horizontal lead screw 263 is connected with the transmission shaft of the corresponding motor in the motor system 25 fixed on the end part of the lower cross beam 132, and the screw nut of the horizontal lead screw 263 is sleeved with an electromagnet 23, and the end support 24 is attracted to the front end of the electromagnet 23.

[0007] The start-stop part 3 includes a traction trolley 31, a traction rope locking block 32, a stopper 33, and a stop arm 34; wherein the traction trolley 31 is fixed on the bottom of the base 11, and the traction rope locking block 32 is movably connected on the traction trolley 31, one end of the traction rope locking block 32 is movably connected on the traction trolley 31, the other end is provided with a bolt, and the bottom of the bolt is placed with a pressing block for pressing the traction rope; the stopper 33 is fixed on the traction track in the collision laboratory, and the stop arm 34 for driving the traction rope locking block 32 is fixed on the stopper 33.

[0008] The frame includes a left stand 121, a right stand 122, and an upper cross beam 131, wherein the upper cross beam 131 is fixed with the left stand 121 and the right stand 122 on the left and right sides of the bottom, respectively, the left stand 121 is fixed with the base 11 on the bottom, the right stand 122 is provided with the universal wheel 14 on the bottom, and the left stand 121 and the right stand 122 are respectively provided with the left lead screw 261 and the right lead screw 262.

[0009] The motor system 25 includes a first motor 251, a second motor 252, and a third motor 253, wherein the first motor 251 and the second motor 252 are fixed above the left stand 121 and the right stand 122, respectively, and the third motor 253 is fixed on the end part of the lower cross beam 132, the left lead screw 261 and the right lead screw 262 are connected with the transmission shafts of the first motor 251 and the second motor 252, respectively, and the horizontal lead screw 263 is connected with the transmission shaft of the third motor 253.

[0010] The base 11 includes a horizontal rod, a vertical rod, and a base, wherein the horizontal rod is fixed on the bottom of the left stand 121, the vertical rods are fixed on the bottom of the horizontal rod on the front and rear ends, respectively, the vertical rods are fixed with the bases on the bottom, and the front and rear ends of the traction trolley 31 are bolted on the front and rear bases, respectively.

[0011] The first motor 251 below the left column 121 upper and lower ends are fixed with the first fixed end seat 271 and the second fixed end seat 272, the left screw 261 upper and lower ends are fixed on the first fixed end seat 271 and the second fixed end seat 272.

[0012] The second motor 252 below the right column 122 upper and lower ends are fixed with the third fixed end seat 273 and the fourth fixed end seat 274, the right screw 262 upper and lower ends are fixed on the third fixed end seat 273 and the fourth fixed end seat 274.

[0013] The third motor 253 inside the lower beam 132 left and right sides are fixed with the fifth fixed end seat 275 and the sixth fixed end seat 276, the horizontal screw 263 upper and lower ends are fixed on the fifth fixed end seat 275 and the sixth fixed end seat 276.

[0014] Also includes a reset switch 22, wherein the reset switch 22 is provided in the traction trolley 31 side, and one end is connected with the power supply, the other end with the electromagnetic switch 211 of the electromagnet 23 electrically connected.

[0015] A bicycle impact vehicle test method, using the test device described above for bicycle impact vehicle side air bag misaction test, comprising the following steps:

[0016] Step one, test vehicle preparation: according to the test outline requirements, the vehicle weight to the whole vehicle preparation quality, measurement and record the front and rear axle load, adjust the tire pressure;

[0017] Step two, test equipment installation: in the test vehicle specific location paste acceleration sensor and pressure sensor; acquisition test waveform data;

[0018] Step three, test vehicle placement: the test vehicle is parked at the traction track one end, and the impact side to the direction of the bicycle acceleration impact, the car window is in the closed state;

[0019] Step four, high speed camera placement: in the traction track both sides are arranged two high speed cameras to record the test process;

[0020] Step five, speed measurement instrument placement: according to the test requirements, placement, adjustment;

[0021] Step six, stopper 33 position determination: move the traction trolley 31 to the vicinity of the vehicle, then use bolts to fix the base 11 to the traction trolley 31; install the handle end support 24 to the handle of the completed bicycle, then open the electromagnetic switch 211 to attract the electromagnet 23 and the handle end support 24, and the bicycle is installed; move the traction trolley 31 to drive the bicycle to move, so that the front end of the front tire of the bicycle is about 5cm away from the impact position of the test vehicle, install the stopper 33 according to the position of the traction trolley 31, so that the stop arm 34 on the stopper 33 is aligned with the traction rope locking block 32, and the stopper 33 is aligned with the traction trolley 31;

[0022] Step seven, collision point confirmation: rotate the horizontal screw rod 263 forward or reversely through the third motor 253, so that the electromagnet 23 drives the bicycle to move left or right, rotate the left screw rod 261 and the right screw rod 262 forward or reversely at the same time through the first motor 251 and the second motor 252, so that the electromagnet 23 drives the bicycle to move up or down, and adjust the bicycle to be in the required position for the test;

[0023] Step eight, test: place the traction rope below the bolt under the traction rope locking block 32, and place the pressing block between the bolt and the traction rope, tighten the bolt, press the pressing block below, until the traction rope is pressed tightly, connect the traction rope and the traction trolley 31 firmly, set the traction system, and the traction trolley 31 drives the bicycle to impact the test vehicle at a speed of 40km / h, in an instant, the reset switch 22 contacts the stopper 33, the electromagnetic switch 211 is instantaneously powered off, the electromagnet 23 has no magnetic force, and the bicycle is released;

[0024] Step nine, after the test, download the test data and video, then place the bicycle in the scrap area, and the test is completed.

[0025] The beneficial effects of the present application are:

[0026] Compared with the original test device and method, the present application is simple and convenient to operate, and is simple to connect with the traction device. At the same time, the present application is equipped with a circuit control system, which realizes the attraction and release of the bicycle and meets the requirements of different sizes of bicycles, and can adjust and move the bicycle left and right, up and down, and quickly confirm the collision point of the test. At the same time, the handle end of the bicycle is locked by the handle end support, which avoids the test failure caused by the bicycle sliding during acceleration, and then the bicycle is attracted by the electromagnetic attraction principle, which limits the forward direction of the bicycle to make the bicycle accelerate and release smoothly, thereby improving the test precision. In addition, the ground contact steering wheel is a universal wheel, the device is more flexible, and when performing multiple repetitive tests, only the bicycle needs to be replaced, without the need to replace the clamp, thereby reducing the labor intensity and greatly improving the test efficiency. Specifically:

[0027] The handlebar of the bicycle is fixed, the risk of test failure caused by falling off during the bicycle running is avoided, and the continuity of the test is ensured.

[0028] The bicycle is controlled by adopting the electromagnetic attraction mode, the collision point is simple and easy to operate, and the test efficiency is improved.

[0029] The front end of the bicycle is ensured to be very stable during running, the test collision point can be accurately hit, and the test precision is improved. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used 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.

[0031] Fig. 1 The structure of the present application is shown in the structure diagram.

[0032] Fig. 2 The structure of the present application is shown in the structure diagram.

[0033] Fig. 3 The structure of the present application is shown in the structure diagram.

[0034] In the figure: 1, support part; 2, electric control part; 3, start-stop part; 11, base; 121, left stand; 122, right stand; 131, first cross beam; 132, second cross beam; 14, universal wheel; 21, control circuit board; 211, electromagnet switch; 212, motor switch; 213, left moving button; 214, right moving button; 215, up moving button; 216, down moving button; 22, reset switch; 23, electromagnet; 24, handle end support; 25, motor system; 251, first motor; 252, second motor; 253, third motor; 261, left lead screw; 262, right lead screw; 263, cross lead screw 263; 271, first fixed end seat; 272, second fixed end seat; 273, third fixed end seat; 274, fourth fixed end seat; 275, fifth fixed end seat; 276, sixth fixed end seat; 31, traction trolley; 32, traction rope lock block; 33, stopper; 34, stop arm. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all structures.

[0036] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between 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.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element 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 used to distinguish in the description, and have no special meaning.

[0039] Embodiment 1

[0040] A test device for a bicycle colliding with a vehicle, comprising a support part 1, a start-stop part 3, an electromagnet 23, a handle end support 24, a motor system 25;

[0041] The support part 1 comprises a frame, a base 11, a universal wheel 14, and a lower crossbeam 132; wherein the frame is provided with the base 11 and the universal wheel 14 on the left and right sides of the bottom, respectively, the left and right sides of the front end of the frame are respectively provided with a left screw rod 261 and a right screw rod 262, the left screw rod 261 and the right screw rod 262 are respectively connected with the transmission shaft of the corresponding motor in the motor system 25 fixed on the upper left and right sides of the frame through a shaft coupling, the left and right sides of the lower crossbeam 132 are respectively sleeved on the outside of the screw rod nut of the left screw rod 261 and the right screw rod 262, the front end of the lower crossbeam 132 is provided with a horizontal screw rod 263, the horizontal screw rod 263 is connected with the transmission shaft of the corresponding motor in the motor system 25 fixed on the end of the lower crossbeam 132 through a shaft coupling, and the screw rod nut of the horizontal screw rod 263 is sleeved with an electromagnet 23, and the end support 24 is attracted to the front end of the electromagnet 23.

[0042] The start-stop part 3 comprises a traction trolley 31, a traction rope locking block 32, a stopper 33, and a stop arm 34; wherein the traction trolley 31 is fixed on the bottom of the base 11, and the traction rope locking block 32 is movably connected on the traction trolley 31, one end of the traction rope locking block 32 is movably connected on the traction trolley 31, the other end is provided with a bolt, and the bottom of the bolt is placed with a pressing block for pressing the traction rope.

[0043] The traction track is arranged in the collision test room, the traction rope runs back and forth in the track, the traction rope locking block 32 is a mechanism on the traction trolley 31, and the traction rope passes through the traction trolley. Before the test, the traction rope locking block 32 is moved to a position of 90 degrees between the traction trolley 31, the traction rope locking block 32 has a bolt, a pressing block is arranged between the bolt and the traction rope, and when the bolt is tightened, the lower pressing block is pressed until the traction rope is pressed. At this time, the traction rope is fastened with the traction trolley 31, the traction rope is the power output of the traction system, after the traction trolley 31 and the traction rope are fixed, the traction trolley 31 can carry the clamp or the vehicle and give the test object power. The traction rope power comes from the traction system, and the traction trolley 31 is connected with the small car with power, the traction trolley 31 is installed with the clamp, the bicycle is installed on the clamp, and the traction rope movement drives the bicycle to move forward. After the test, the stop arm 34 pushes the traction rope locking block 32, the traction rope locking block 32 rotates, the bolt slides off the pressing block, the pressing block on the upper end of the traction rope is bounced up, and the traction rope is separated from the trolley.

[0044] The frame comprises a left stand 121, a right stand 122, and an upper crossbeam 131, wherein the upper crossbeam 131 is fixed with the left stand 121 and the right stand 122 on the left and right sides of the bottom, respectively, the left stand 121 is fixed with the base 11 on the bottom, the right stand 122 is provided with the universal wheel 14 on the bottom, and the left stand 121 and the right stand 122 are respectively provided with the left screw rod 261 and the right screw rod 262.

[0045] The motor system 25 comprises a first motor 251, a second motor 252 and a third motor 253, wherein the first motor 251 and the second motor 252 are fixed above the left upright column 121 and the right upright column 122 respectively, and the third motor 253 is fixed at the end of the lower cross beam 132; the left screw rod 261 and the right screw rod 262 are connected with the transmission shafts of the first motor 251 and the second motor 252 through couplings respectively, and the cross screw rod 263 is connected with the transmission shaft of the third motor 253 through a coupling.

[0046] The base 11 comprises a horizontal rod, vertical rods and bases, wherein the horizontal rod is fixed at the bottom of the left upright column 121, vertical rods are fixed at the bottom of the front and rear ends of the horizontal rod respectively, and the bases are fixed at the bottom of the vertical rods; the front and rear ends of the traction trolley 31 are bolted to the front and rear bases respectively.

[0047] The horizontal rod of the base 11 is fixed with a reinforcing plate between the left upright column 121.

[0048] The left upright column 121 below the first motor 251 is fixed with a first fixed end seat 271 and a second fixed end seat 272 at the top and bottom ends respectively, and the left screw rod 261 is fixed at the first fixed end seat 271 and the second fixed end seat 272 at the top and bottom ends respectively.

[0049] The right upright column 122 below the second motor 252 is fixed with a third fixed end seat 273 and a fourth fixed end seat 274 at the top and bottom ends respectively, and the right screw rod 262 is fixed at the third fixed end seat 273 and the fourth fixed end seat 274 at the top and bottom ends respectively.

[0050] The left and right sides of the lower cross beam 132 inside the third motor 253 are fixed with a fifth fixed end seat 275 and a sixth fixed end seat 276 respectively, and the cross screw rod 263 is fixed at the fifth fixed end seat 275 and the sixth fixed end seat 276 at the top and bottom ends respectively.

[0051] It also comprises a reset switch 22, wherein the reset switch 22 is arranged on the side of the traction trolley 31, and one end thereof is connected with the power supply and the other end is electrically connected with the electromagnetic switch 211 of the electromagnet 23.

[0052] Also include control box, electromagnetic switch 211, motor switch 212, left button 213, right button 214, up button 215, down button 216, wherein the control box is fixed on the base 11, electromagnetic switch 211, motor switch 212, left button 213, right button 214, up button 215, down button 216 are all set in the control box, wherein the reset switch 22 is connected with the power supply on one end, and the other end is electrically connected with the electromagnetic switch 211, the electromagnetic switch 211 is electrically connected with the electromagnet 23 at the same time, the motor switch 212 of the third motor 253 is connected with the power supply on one end, and the other end is respectively connected with the third motor 253 through the left button 213 and the right button 214, the motor switch 212 of the first motor 251 and the second motor 252 is connected with the power supply on one end, and the other end is respectively connected with the motor switch 212 of the first motor 251 and the second motor 252 through the up button 215 and the down button 216.

[0053] The electromagnetic switch 211 supplies power to the electromagnet 23, and the electromagnet 23 has suction. The reset switch 22 is led out from the control box and fixed to the front end of the traction trolley 31. When the test is impacted on the reset switch 22, the reset switch 22 is in contact with the stopper 33 for an instant, the power is cut off, the electromagnetic switch 211 is cut off instantaneously, the electromagnet 23 has no magnetic force, and the bicycle is released.

[0054] The motor switch 212 supplies power to the motor of the motor system 25, which has three motors in total.

[0055] A test method for a bicycle impacting a vehicle, using the above test device to conduct a bicycle impacting the air bag misoperation test of the side of the vehicle, comprising the following steps:

[0056] Step one, test vehicle preparation: according to the test outline requirements, the vehicle is weighted to the whole vehicle preparation mass, the front and rear axle loads are measured and recorded, and the tire pressure is adjusted;

[0057] Step two, test equipment installation: paste acceleration sensors and pressure sensors at specific positions of the test vehicle; install a data acquisition system in the trunk, connect the acceleration sensors and pressure sensors with the data acquisition system, and collect test waveform data;

[0058] Step three, test vehicle placement: the test vehicle is parked at one end of the traction track in a vertical state, and the side to be impacted faces the direction of the bicycle acceleration impact, and the window is in a closed state;

[0059] Step four, high-speed camera placement: two high-speed cameras are arranged on both sides of the traction track to record the test process;

[0060] Step five, speedometer placement: according to the test requirements, place and adjust;

[0061] Step 6, determining the position of the stopper 33 of the traction system 3: Move the traction trolley 31 to the vicinity of the vehicle, and then fix the base 11 to the traction trolley 31 with bolts; install the handlebar bracket 24 onto the bicycle handlebars after the weight has been applied, and then turn on the electromagnetic switch 211 to attract the electromagnet 23 and the handlebar bracket 24, and the bicycle installation is complete; move the traction trolley 31 to move the bicycle so that the frontmost part of the bicycle tire is about 5cm away from the impact point of the test vehicle. This position is the release position of the bicycle. Install the stopper 33 according to the position of the traction trolley 31, so that the stop arm 34 on the stopper 33 is aligned with the traction rope locking block 32, and the stopper 33 is aligned with the traction trolley 31.

[0062] Step 7, collision point confirmation: The third motor 253 rotates the horizontal lead screw 263 in the forward or reverse direction, causing the electromagnet 23 to move the bicycle to the left or right. The first motor 251 and the second motor 252 rotate the left lead screw 261 and the right lead screw 262 in the forward or reverse direction simultaneously, causing the electromagnet 23 to move the bicycle up or down. Adjust the bicycle to the position required for the test, so that the longitudinal vertical plane of the bicycle coincides with the vertical plane of the external sensor of the side airbag controller.

[0063] Step 8, conduct the test: Place the traction rope under the bolt below the traction rope locking block 32, and place the pressure block between the bolt and the traction rope. Tighten the bolt to press the pressure block below until the traction rope is pressed. Securely connect the traction rope to the traction trolley 31. Set up the traction system. The traction trolley 31 drives the bicycle to collide with the test vehicle at a speed of 40 km / h. At the moment of impact, the reset switch 22 contacts the stop device 33, the electromagnetic switch 211 is instantly de-energized, the electromagnet 23 has no magnetic force, and the bicycle is released.

[0064] Step nine: After the test, download the test data and video recording, then place the bicycle in the scrap area. The test is now complete.

[0065] Example 2

[0066] like Figs. 1-3 As shown, a test device for a bicycle impacting the side of a vehicle includes a support part 1, an electronic control part 2, and a start-stop part 3. The support part 1 is used to secure the bicycle and smoothly support it from the starting point to the impact position. The electronic control part 2 is used to adjust the bicycle's height and lateral position to make the impact position more accurate and improve test precision; it also controls the engagement and disengagement between the bicycle and the device. The start-stop part 3 is used to move the entire device and bicycle from the test starting position to the impact position.

[0067] The support part 1 comprises a base 11, a column 12, a crossbeam 13 and a universal wheel 14; wherein the base 11 is used for fixedly connecting with the traction trolley 31 and supporting the whole fixing support; the column 12 is divided into a left column 121 and a right column 122, and is used for supporting the vertical direction of the device; wherein the lower end of the left column 121 is connected with the base 11, and the upper end is connected with the upper crossbeam 131. The lower end of the right column 122 is connected with the universal wheel 14, and the upper end is connected with the upper crossbeam 131; the crossbeam 13 is divided into an upper crossbeam 131 and a lower crossbeam 132, and plays a supporting role in the horizontal direction of the whole device; the two ends of the upper crossbeam 131 are respectively connected with the left column 121 and the right column 122. The two ends of the lower crossbeam 132 are connected with a left screw 261 and a right screw 262 fixed on the left column 121 and the right column 122, so that the lower crossbeam 132 can be synchronously adjusted up and down through the left screw 261 and the right screw 262;

[0068] The electric control part 2 is a normally closed circuit state; including control circuit board 21, reset switch 22, electromagnet 23, handle end support 24, motor system 25, screw rod 26, fixed end seat 27. Control circuit board 21 includes electromagnetic switch 211, motor switch 212, left shift button 213, right shift button 214, up shift button 215, down shift button 216. Press the electromagnetic switch 211, electromagnet 23 is charged, the whole circuit is in a normally closed charged state; screw rod 26 includes left screw rod 261, right screw rod 262, horizontal screw rod 263; fixed end seat 27 includes first fixed end seat 271, second fixed end seat 272, third fixed end seat 273, fourth fixed end seat 274, fifth fixed end seat 275, sixth fixed end seat 276; left screw rod 261 is fixed on the left vertical column 121 through the first fixed end seat 271 and the second fixed end seat 272; right screw rod 262 is fixed on the right vertical column 122 through the third fixed end seat 273 and the fourth fixed end seat 274; horizontal screw rod 263 is fixed on the lower cross beam 132 through the fifth fixed end seat 275 and the sixth fixed end seat 276; motor switch 212 is used to power the corresponding motor of motor system 25; motor 25 includes first motor 251, second motor 252, third motor 253; When the left shift button 213 is pressed, the third motor 253 makes the horizontal screw rod 263 rotate forward to drive the electromagnet 23 to move left; When the right shift button 214 is pressed, the third motor 253 makes the horizontal screw rod 263 rotate reversely to drive the electromagnet 23 to move right; When the up shift button 215 is pressed, the first motor 251 and the second motor 252 make the left screw rod 261 and the right screw rod 262 rotate forward at the same time to drive the lower cross beam 132 to move up; When the down shift button 216 is pressed, the first motor 251 and the second motor 252 make the left screw rod 261 and the right screw rod 262 rotate reversely at the same time to drive the lower cross beam 132 to move down; Reset switch 22 is in series with electromagnetic switch 211, used to make the circuit open and close instantaneously. When the reset switch 22 is not touched, the electromagnet 23 always has magnetism, attracting the handle end support 24, which is fixed on the bicycle handle through bolts, the electromagnet 23 lifts the bicycle, and the position of the bicycle is adjusted through the left shift button 213, the right shift button 214, the up shift button 215, and the down shift button 216; When the towing trolley 31 collides with the stopper 33 for an instant, the reset switch 22 is touched, the electromagnet 23 circuit is disconnected instantaneously, the electromagnet 23 loses magnetism, and the bicycle is released.

[0069] The start-stop part 3 includes a traction trolley 31, a traction rope locking block 32, a stopper 33, and a stop arm 34. The traction trolley 31 is connected with the base 11 and drives the bicycle to move. The traction rope locking block 32 can lock and release the traction trolley 31 and the traction rope. The stopper 33 is fixed on the traction track and is used to prevent the traction trolley 31 from continuing to move after collision. The stop arm 34 is used to move the traction rope locking block 32 to disconnect the traction trolley 31 and the traction rope, so that the traction trolley 31 loses power and stops by colliding with the stopper 33.

[0070] The electromagnetic switch 211 is used to supply power to the whole circuit of the electromagnet 23. The reset switch 22 is connected in series with the electromagnetic switch 211 and is used to open and close the circuit instantaneously. When the reset switch 22 is triggered at the moment of collision, the electromagnet circuit is disconnected instantaneously, the electromagnet 23 loses magnetism, and the bicycle is released. The motor switch 212 is used to supply power to the motor.

[0071] A test method for a bicycle colliding with the side of a vehicle, which uses the above test device to conduct airbag misoperation test for a bicycle colliding with the side of a vehicle, includes the following steps:

[0072] ① Test vehicle preparation: according to the test outline requirements, the vehicle is weighted to the whole vehicle preparation mass, the front and rear axle loads are measured and recorded, and the tire pressure is adjusted.

[0073] ② Test equipment installation: the acceleration sensor and the pressure sensor are pasted on the specific position of the test vehicle; the data acquisition system is installed at the trunk position, the sensor is connected with the data acquisition system, and the test waveform data is collected.

[0074] ③ Test vehicle placement: the test vehicle is parked at the end of the traction track and is perpendicular to the traction track, the collision side is towards the direction of the bicycle acceleration impact, and the vehicle window is in a closed state.

[0075] ④ High-speed camera placement: two high-speed cameras are arranged on both sides of the traction track to record the test process.

[0076] ⑤ Speed measuring instrument placement: the speed measuring device is placed and adjusted according to the test requirements.

[0077] ⑥ Position determination of the stopper 33 of the traction system: the traction trolley 31 is moved to the vicinity of the vehicle, and then the above test device is fixed to the traction trolley 31 by using bolts; the handle end support 24 is installed on the handlebar of the bicycle, and then the electromagnetic switch 211 is turned on, the electromagnet 23 and the handle end support 24 are attracted, and the bicycle is installed. The traction trolley 31 is moved to make the front end of the front tire of the bicycle about 5 cm away from the test vehicle, this position is the release position of the bicycle, and the stopper 33 is installed according to the position of the traction trolley 31.

[0078] 7. Collision point confirmation: adjust the position of the bicycle through the left and right shift buttons 213 and 214, so that the longitudinal median plane of the bicycle coincides with the median plane of the lateral airbag controller outer sensor.

[0079] 7. Test preparation: move the test device described above to the starting area with the towing trolley 31, re-install the bicycle weight 75 kg on the device, and adjust the position of the bicycle through the up and down shift buttons 215 and 216 so that the front tire of the bicycle is 5 cm off the ground, ensuring that the front tire of the bicycle will not deviate during driving and can accurately hit the collision point.

[0080] 7. Test preparation: move the test device described above to the starting area with the towing trolley 31, re-install the bicycle weight 75 kg on the device, and adjust the position of the bicycle through the up and down shift buttons 215 and 216 so that the front tire of the bicycle is 5 cm off the ground, ensuring that the front tire of the bicycle will not deviate during driving and can accurately hit the collision point.

[0081] 7. Test preparation: move the test device described above to the starting area with the towing trolley 31, re-install the bicycle weight 75 kg on the device, and adjust the position of the bicycle through the up and down shift buttons 215 and 216 so that the front tire of the bicycle is 5 cm off the ground, ensuring that the front tire of the bicycle will not deviate during driving and can accurately hit the collision point.

[0082] The preferred embodiments of the present application are described in detail above in combination with the drawings, but the protection scope of the present application is not limited to the specific details in the above-described embodiments. Any person skilled in the art, within the technical concept of the present application, can make equivalent substitutions or changes to the technical solutions and the inventive concept of the present application, and these simple modifications are all within the protection scope of the present application.

[0083] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0084] Furthermore, any combination of the various embodiments of the present application can also be made, as long as it does not deviate from the idea of the present application, and it should be considered as disclosed by the present application.

Claims

1. A test apparatus for a bicycle impact on a vehicle, characterized in that, It comprises a support part (1), a start-stop part (3), an electromagnet (23), a handle end support (24) and a motor system (25); The support part (1) comprises a frame, a base (11) and universal wheels (14), and a lower cross beam (132); the frame is provided with the base (11) and the universal wheels (14) on the bottom of the left and right sides, respectively, and is provided with a left lead screw (261) and a right lead screw (262) on the front end of the left and right sides, respectively, and the left lead screw (261) and the right lead screw (262) are connected with the transmission shafts of corresponding motors in the motor system (25) fixed on the top of the left and right sides of the frame, respectively, and the lower cross beam (132) is sleeved on the outside of the screw nut of the left lead screw (261) and the right lead screw (262) on the left and right sides, respectively, and the front end of the lower cross beam (132) is provided with a horizontal lead screw (263), and the horizontal lead screw (263) is connected with the transmission shaft of the corresponding motor in the motor system (25) fixed on the end of the lower cross beam (132), and the screw nut of the horizontal lead screw (263) is sleeved with the electromagnet (23), and the handle end support (24) is attracted to the front end of the electromagnet (23); The start-stop part (3) comprises a traction trolley (31), a traction rope locking block (32), a stopper (33) and a stop arm (34); the traction trolley (31) is fixed on the bottom of the base (11), and a traction rope locking block (32) is movably connected to the traction trolley (31), one end of the traction rope locking block (32) is movably connected to the traction trolley (31), and the other end is provided with a bolt, and the bottom of the bolt is provided with a pressing block for pressing the traction rope; the stopper (33) is fixed on the traction track in the collision laboratory, and the stop arm (34) for driving the traction rope locking block (32) is fixed on the stopper (33).

2. A test apparatus for a bicycle impacting a vehicle according to claim 1, wherein The frame comprises a left stand column (121), a right stand column (122) and an upper cross beam (131), wherein the upper cross beam (131) is fixed with the left stand column (121) and the right stand column (122) on the bottom of the left and right sides, respectively, the bottom of the left stand column (121) is fixed with the base (11), and the bottom of the right stand column (122) is provided with the universal wheels (14), and the left stand column (121) and the right stand column (122) are respectively provided with the left lead screw (261) and the right lead screw (262).

3. A test apparatus for a bicycle impacting a vehicle according to claim 1, wherein The motor system (25) comprises a first motor (251), a second motor (252) and a third motor (253), wherein the first motor (251) and the second motor (252) are fixed above the left stand column (121) and the right stand column (122), respectively, and the third motor (253) is fixed on the end of the lower cross beam (132), and the left lead screw (261) and the right lead screw (262) are connected with the transmission shafts of the first motor (251) and the second motor (252), respectively, and the horizontal lead screw (263) is connected with the transmission shaft of the third motor (253).

4. A test apparatus for a bicycle impacting a vehicle according to claim 1, wherein The base (11) comprises a horizontal rod, a vertical rod and a base, wherein the horizontal rod is fixed on the bottom of the left stand column (121), and the horizontal rod is fixed with the vertical rod on the bottom of the front and rear ends, respectively, and the vertical rod is fixed with the base on the bottom, and the front and rear ends of the traction trolley (31) are bolted to the front and rear bases, respectively.

5. A test apparatus for a bicycle impacting a vehicle according to claim 3, wherein The left stand column (121) below the first motor (251) is fixed with a first fixed end seat (271) and a second fixed end seat (272) at the upper and lower ends respectively, and the upper and lower ends of the left screw rod (261) are fixed on the first fixed end seat (271) and the second fixed end seat (272) respectively.

6. A test apparatus for a bicycle impacting a vehicle according to claim 3, wherein The right stand column (122) below the second motor (252) is fixed with a third fixed end seat (273) and a fourth fixed end seat (274) at the upper and lower ends respectively, and the upper and lower ends of the right screw rod (262) are fixed on the third fixed end seat (273) and the fourth fixed end seat (274) respectively.

7. A test apparatus for a bicycle impacting a vehicle according to claim 3, wherein The left stand column (121) below the first motor (251) is fixed with a first fixed end seat (271) and a second fixed end seat (272) at the upper and lower ends respectively, and the upper and lower ends of the left screw rod (261) are fixed on the first fixed end seat (271) and the second fixed end seat (272) respectively.

8. A test apparatus for a bicycle impacting a vehicle according to claim 1, wherein It also includes a reset switch (22), wherein the reset switch (22) is arranged on the side of the traction trolley (31), and one end thereof is connected with the power supply, and the other end is electrically connected with the electromagnetic switch (211) of the electromagnet (23).

9. A test method for a bicycle impact vehicle test, in which the airbag malfunction test on the side of a vehicle is performed using the bicycle impact vehicle test device according to any one of claims 1 to 8, characterized by, It includes the following steps: Step one, test vehicle preparation: according to the test outline requirements, the vehicle is weighted to the whole vehicle preparation mass, the front and rear axle loads are measured and recorded, and the tire pressure is adjusted; Step two, test equipment installation: paste acceleration sensor and pressure sensor on specific position of test vehicle; collect test waveform data; Step three, test vehicle placement: the test vehicle is parked at the end of the traction track, and the side to be impacted is towards the direction of bicycle acceleration impact, and the window is in closed state; Step four, high-speed camera placement: two high-speed cameras are arranged on both sides of the traction track to record the test process; Step five, speedometer placement: according to test requirements; Step six, stopper (33) position determination: move the traction trolley (31) to the vicinity of the vehicle, then fix the base (11) to the traction trolley (31) with bolts; install the handle end support (24) to the handlebar of the bicycle with completed weight, then open the electromagnetic switch (211), attract the electromagnet (23) and the handle end support (24), and the bicycle installation is completed; Move the traction trolley (31) to drive the bicycle to move, so that the front end of the front tire of the bicycle is 5 cm away from the impact position of the test vehicle, install the stopper (33) according to the position of the traction trolley (31), so that the stop arm (34) on the stopper (33) is aligned with the traction rope lock block (32), and the stopper (33) is aligned with the traction trolley (31) at the same time; Step seven, collision point confirmation: rotate the horizontal screw rod (263) forward or reversely through the third motor (253), so that the electromagnet (23) drives the bicycle to move left or right, rotate the left screw rod (261) and the right screw rod (262) forward or reversely at the same time through the first motor (251) and the second motor (252), so that the electromagnet (23) drives the bicycle to move upward or downward, and adjust the bicycle to be in the required position for test. Step eight, test: the traction rope is placed under the bolt below the traction rope lock block (32), and the pressing block is placed between the bolt and the traction rope. The bolt is tightened, the lower pressing block is pressed, and the traction rope is pressed until the traction rope is firmly connected with the traction trolley (31). The traction system is set, the bicycle is driven by the traction trolley (31) to hit the test vehicle at a speed of 40 km / h. The reset switch (22) contacts the stopper (33) in an instant, the electromagnetic switch (211) is instantaneously powered off, the electromagnet (23) has no magnetic force, and the bicycle is released; Step nine, after the test, download the test data and video, and then place the bicycle in the scrap area. The test is completed.

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