A device and method for testing a tire blowout of a vehicle

Abstract

The application relates to the technical field of tire burst devices, and discloses an automobile tire burst test device and method. The automobile tire burst test device comprises a base plate, a bayonet, a locking mechanism and a driving piece. The bayonet has a folding position and an unfolding position in a first mounting groove. The locking mechanism comprises a locking piece, a first button, a limiting piece and a second button. The locking piece can lock the bayonet at the folding position. The first button can drive the locking piece to release the locking of the bayonet. The limiting piece can limit the pressing of the first button. The second button is arranged on the base plate in a lifting manner. The second button can drive the limiting piece to release the pressing limitation of the first button. The driving piece can drive the bayonet to switch from the folding position to the unfolding position. The application has the advantages that the rear tire of a three-axle automobile can be accurately burst, the front tire and the middle tire of the automobile can be effectively prevented from being mistakenly punctured, and the overall structure is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire burst device, and particularly relates to a vehicle tire burst test device and method. BACKGROUND

[0002] Vehicle tire burst is easy to cause traffic accidents, especially when the vehicle is running at high speed on the highway. Therefore, before the vehicle is put on the market, the vehicle needs to be tested for tire burst to reduce the damage to the driver and the vehicle.

[0003] The existing vehicle tire burst test mainly has the following forms: one is to set a gas release device on the vehicle tire, and release the gas in the vehicle tire instantaneously when the vehicle is running at high speed to simulate the instant of tire burst; one is to set a puncture device on the vehicle tire, and puncture the vehicle tire when the vehicle is running at high speed; and the other is to use a ground spike, set a puncture device on the ground, and make the vehicle drive towards the puncture device at high speed, and the puncture device punctures the vehicle tire.

[0004] Compared with the above, the ground spike method can more closely simulate the scene of tire burst in reality. However, for some special vehicle models, the vehicle has three axles, and thus has three rows of wheels (front wheels, middle wheels and rear wheels), such as some high-performance off-road vehicles and commercial transport vehicles. If the ground spike method is used, when the rear wheels are tested for tire burst, it is difficult to accurately control the rear wheels to press on the puncture device on the ground, and the middle wheels are easily pressed on the puncture device, which causes the middle tires to burst by mistake. This leads to increased test cost and delayed test progress. SUMMARY

[0005] In view of the above problems in the prior art, the technical problem to be solved by the present application is to provide a vehicle tire burst test device and method which can test the rear wheels of a three-axle vehicle for tire burst by using a ground spike method.

[0006] The technical solution adopted by the present application to solve the technical problem is to provide a vehicle tire burst test device, the bottom of the vehicle is provided with a front tire, a middle tire and a rear tire in sequence, and the test device comprises:

[0007] a base plate, the base plate is provided with a first mounting groove with an opening facing upward;

[0008] a bayonet, which is rotatably arranged in the first mounting groove, the bayonet has a retracted position and an extended position in the first mounting groove, when the bayonet is in the retracted position, the bayonet is accommodated in the first mounting groove, and when the bayonet is in the extended position, the cutting edge of the bayonet is inclined upward and extends out of the first mounting groove;

[0009] The locking mechanism comprises a locking piece, a first button, a limiting piece and a second button. The locking piece is movably arranged on the base plate and can lock the bayonet in the retracted position. The first button is movably arranged on the base plate and is in movable contact with the locking piece. The first button can drive the locking piece to release the locking of the bayonet. The limiting piece is movably arranged below the first button and can limit the depression of the first button. The second button is movably arranged on the base plate and is in movable contact with the limiting piece. The second button can drive the limiting piece to release the depression limitation of the first button. The driving piece can drive the bayonet to switch from the retracted position to the extended position.

[0010] The front tire of the vehicle first presses on the second button to release the depression limitation of the first button by the limiting piece.

[0011] The middle tire of the vehicle then presses on the first button to release the locking of the bayonet by the locking piece. The driving piece drives the bayonet to switch from the retracted position to the extended position.

[0012] The rear tire of the vehicle finally presses on the bayonet, and the bayonet pierces the rear tire.

[0013] Further, the rotation angle of the bayonet from the retracted position to the extended position is less than ninety degrees.

[0014] The base plate is provided with a limiting slope. When the bayonet rotates to the extended position, the side wall of the bayonet abuts against the limiting slope, so that when the rear tire is pressed towards the bayonet, the bayonet remains in the extended position.

[0015] Further, the rotation angle of the bayonet from the retracted position to the extended position is between seventy degrees and eighty degrees.

[0016] The base plate is provided with a limiting block near each end of the bayonet. The limiting block is detachably fixedly connected with the base plate, and the limiting block is in the first mounting groove. The limiting slope is on the limiting block.

[0017] Further, the bayonet is hinged to the base plate through a rotating shaft.

[0018] The driving piece is a torsion spring. Each end of the rotating shaft is sleeved with a torsion spring. One torsion arm of the torsion spring abuts against the base plate, and the other torsion arm of the torsion spring abuts against the side wall of the bayonet.

[0019] When the bayonet is in the retracted position, the torsion spring is in a compressed state.

[0020] Further, the torsion arms are arranged in L shape;

[0021] The first limiting groove is arranged on the substrate, the second limiting groove is arranged on the side wall of the bayonet, and the two torsion arms of the torsion spring are arranged in the first limiting groove and the second limiting groove respectively.

[0022] Further, the bayonet comprises a shaft sleeve and a plurality of blades arranged axially along the shaft sleeve, and the rotating shaft is arranged in the shaft sleeve;

[0023] The shaft sleeve is provided with a locking groove in a direction away from the blades, and the locking member is provided with a locking tongue which can be locked into the locking groove to lock the bayonet in the folding position.

[0024] Further, the first key is provided with a first driving slope, the locking member is provided with a first driven slope, and the first driving slope and the first driven slope are in movable abutment; the first key pushes the first driven slope through the first driving slope to make the locking member extend and retract to release the locking of the bayonet;

[0025] The first reset spring is arranged between the first key and the substrate, and the first reset spring is compressed after the first key is pressed down;

[0026] The first tension spring is arranged between the locking member and the substrate, and the elastic force of the first tension spring makes the locking member have a tendency to move in the locking direction; when the first key drives the locking member to unlock, the first tension spring is compressed.

[0027] Further, the second key is provided with a second driving slope, the limiting member is provided with a second driven slope, and the second driving slope and the second driven slope are in movable abutment; the second key pushes the second driven slope through the second driving slope to make the limiting member extend and retract to release the pressing limiting of the first key;

[0028] The second reset spring is arranged between the second key and the substrate, and the second reset spring is compressed after the second key is pressed down;

[0029] The second tension spring is arranged between the limiting member and the substrate, and the elastic force of the second tension spring makes the limiting member have a tendency to move towards the side close to the first key; when the second key drives the limiting member to release the pressing limiting of the first key, the second tension spring is compressed.

[0030] Further, the first slope and the second slope are respectively arranged at the two ends of the substrate;

[0031] The second mounting groove and the third mounting groove are sequentially arranged on the substrate, the first button is arranged in the second mounting groove in a lifting manner, and the second button is arranged in the third mounting groove in a lifting manner.

[0032] The first sliding groove and the second sliding groove are arranged on the substrate, the locking member is arranged in the first sliding groove in a sliding manner, and the limiting member is arranged in the second sliding groove in a sliding manner.

[0033] The substrate comprises a bottom plate and a top plate which are detachably connected, and the first mounting groove, the second mounting groove, the third mounting groove, the first sliding groove and the second sliding groove are at least partially arranged on the bottom plate, and the other part is arranged on the top plate.

[0034] Further, the bayonet is arranged along the width direction of the substrate, the first button is arranged along the width direction of the substrate, and the second button is arranged along the width direction of the substrate.

[0035] The length of the bayonet, the length of the first button and the length of the second button are all greater than the width of the front tire, the middle tire and the rear tire.

[0036] The application also provides a vehicle tire burst test method, which adopts the vehicle tire burst test device, and before the test, the locking member locks the bayonet in the folding position, and the limiting member limits the first button from being pressed down.

[0037] The vehicle drives towards the substrate, the front tire drives over the bayonet from above, and drives over the first button, and the limiting member limits the first button from being pressed down by the front tire.

[0038] The front tire drives towards the second button and presses down the second button, and the limiting member releases the limitation on the first button.

[0039] The middle tire of the vehicle drives over the bayonet from above, drives towards the first button and presses down the first button, and the locking member releases the locking of the bayonet, and the driving member drives the bayonet to rotate from the folding position to the unfolded position.

[0040] The rear tire of the vehicle drives towards the bayonet, and the blade of the bayonet pierces the rear tire.

[0041] Compared with the prior art, the application has at least the following beneficial effects:

[0042] In this invention, the bayonet is rotatably mounted on a base plate and can switch between a retracted position and an extended position. The locking mechanism includes a locking member, a first button, a limiting member, and a second button. For a three-axle vehicle with front, middle, and rear tires, when a tire blowout test is required on the rear tire, it is necessary to ensure that the front and middle tires are not accidentally punctured during the test. When the front and middle tires pass over the bayonet, the bayonet is in the retracted position, thus ensuring that the front and middle tires are not accidentally punctured. When the front tire is pressing on the first button, the limiting member restricts the first button from being pressed down, so the front tire cannot press down the first button, thus unlocking the locking member. Only when the front tire moves to the second button, first releasing the limiting member from restricting the pressing down of the first button, and then the middle tire moves to the first button, can the first button be pressed down, causing the locking member to release the bayonet. The driving member (i.e., a torsion spring) drives the bayonet to rotate to the extended position, with the blade of the bayonet extending obliquely upward from the first mounting groove. As the car's rear tire approaches the bayonet, the upward-pointing blade punctures the tire, simulating a rear tire blowout. This tire blowout testing device has a simple overall structure and can precisely cause a rear tire blowout in a three-axle vehicle, effectively preventing accidental punctures to the front and middle tires.

[0043] In this invention, a limiting block is provided on the base plate, and the limiting block has a limiting inclined surface. When the bayonet rotates to the outward position, one side of the bayonet abuts and fits against the limiting inclined surface. When the rear tire of the car travels to the bayonet, the limiting inclined surface fits against the side of the bayonet, ensuring that the bayonet is stably kept in the outward position, thereby allowing the blade of the bayonet to puncture the rear tire of the car.

[0044] In this invention, the driving component is a torsion spring. When the bayonet is in the retracted position, the bayonet compresses the torsion spring. When the locking device on the bayonet releases its lock, the restoring torque of the torsion spring drives the bayonet to rotate to the extended position. The structure is simple, low-cost, and highly responsive. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the piercing blade of the tire blowout device of the present invention in the retracted position;

[0046] Figure 2 for Figure 1 A schematic diagram of the structure for switching the bayonet to the extended position;

[0047] Figure 3 for Figure 2 A plan view;

[0048] Figure 4 for Figure 1 A schematic diagram of the structure after removing the substrate and driving components;

[0049] Figure 5For Figure 4 Another perspective structural schematic view;

[0050] Figure 6 For Figure 4 Exploded view after removing the spring;

[0051] Figure 7 Structural schematic view for installing the bayonet, locking member and limiting member on the bottom plate;

[0052] Figure 8 Exploded view of the base plate.

[0053] In the figure:

[0054] 1, base plate; 11, top plate; 12, bottom plate; 13, limiting block; 100, first limiting groove; 101, first mounting groove; 102, second mounting groove; 103, third mounting groove; 104, first sliding groove; 105, second sliding groove; 110, first inclined portion; 120, second inclined portion; 130, limiting inclined surface;

[0055] 2, bayonet; 20, rotating shaft; 21, second limiting groove; 22, shaft sleeve; 23, blade; 220, locking groove;

[0056] 3, locking mechanism; 30, locking member; 31, first button; 32, limiting member; 33, second button; 34, first return spring; 35, first tension spring; 36, second return spring; 37, second tension spring; 301, locking tongue; 302, first driven inclined surface; 311, first driving inclined surface; 321, second driven inclined surface; 331, second driving inclined surface;

[0057] 4, driving member. DETAILED DESCRIPTION

[0058] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0059] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0060] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0063] Example 1:

[0064] like Figures 1-4 As shown, this embodiment of a vehicle tire blowout testing device can ensure precise tire blowout of the rear tires of a three-axle vehicle. The three-axle vehicle has front tires, middle tires, and rear tires arranged sequentially on its underside. The testing device of this embodiment includes:

[0065] Substrate 1, the substrate 1 having an upward-facing first mounting groove 101;

[0066] Bayonet 2 is rotatably disposed in first mounting groove 101. Bayonet 2 has a retracted position and an extended position in first mounting groove 101. When bayonet 2 is in the retracted position, bayonet 2 is housed in first mounting groove 101. When bayonet 2 is in the extended position, the blade 23 of bayonet 2 extends obliquely upward from first mounting groove 101.

[0067] The locking mechanism 3 and the driving member 4, the locking mechanism 3 comprises a locking member 30, a first button 31, a limiting member 32 and a second button 33, the locking member 30 is movably arranged on the base plate 1, and can lock the bayonet 2 in the retracted position; the first button 31 is arranged on the base plate 1 in a lifting manner, and is in movable abutment with the locking member 30, the first button 31 can drive the locking member 30 to release the locking of the bayonet 2; the limiting member 32 is movably arranged below the first button 31, and can limit the first button 31 from being pressed down; the second button 33 is arranged on the base plate 1 in a lifting manner, and is in movable abutment with the limiting member 32, the second button 33 can drive the limiting member 32 to release the downward pressing limitation of the first button 31; the driving member 4 can drive the bayonet 2 to switch from the retracted position to the extended position;

[0068] In actual use, the front tire of the automobile first presses on the second button 33, releasing the downward pressing limitation of the limiting member 32 on the first button 31. Then, the middle tire of the automobile is pressed on the first button 31, releasing the locking of the locking member 30 on the bayonet 2, and the driving member 4 drives the bayonet 2 to switch from the retracted position to the extended position. Finally, the rear tire of the automobile is pressed on the bayonet 2, and the blade 23 of the bayonet 2 pierces the rear tire.

[0069] In this embodiment, the bayonet 2 is rotatably arranged on the base plate 1, and the bayonet 2 can be switched between the retracted position and the extended position. The locking mechanism 3 comprises a locking member 30, a first button 31, a limiting member 32 and a second button 33. For a three-axle automobile, there are front tires, middle tires and rear tires, when the rear tires need to be tested, the front tires and the middle tires should not be pierced by mistake. When the front tires and the middle tires pass above the bayonet 2, the bayonet 2 is in the retracted position, so that the front tires and the middle tires will not be pierced by mistake. When the front tire is pressed on the first button 31, the limiting member 32 limits the first button 31 from being pressed down, so the front tire cannot press the first button 31 down to release the locking of the locking member 30. Only when the front tire is driven to the second button 33, the limiting member 32 is released from the downward pressing limitation on the first button 31, and then the middle tire is driven to the first button 31, the first button 31 can be pressed down, so that the locking member 30 is released from the locking of the bayonet 2, the driving member 4 (i.e. the torsional spring) drives the bayonet 2 to rotate to the extended position, and the blade 23 of the bayonet 2 is obliquely upwardly extended from the first mounting groove 101. When the rear tire of the automobile is driven to the bayonet 2, the obliquely upwardly extended blade 23 of the bayonet 2 pierces the rear tire, simulating the scene of the automobile rear tire blowout. The overall structure of the blowout test device is simple, and the rear tire of the three-axle automobile can be accurately blown out, and the front tires and the middle tires are effectively prevented from being pierced by mistake.

[0070] In combination Figures 1-3In the embodiment, when the bayonet 2 is in the retracted position, one side of the bayonet 2 is attached to the base plate 1, the bayonet 2 is completely accommodated in the first mounting groove 101, the bayonet 2 is in a horizontal state or close to a horizontal state, the blade 23 of the bayonet 2 is in a horizontal state, and the bayonet 2 cannot puncture the tire of the vehicle. The rotation angle of the bayonet 2 from the retracted position to the extended position is less than 90 degrees, specifically, the rotation angle of the bayonet 2 from the retracted position to the extended position is between 70 degrees and 80 degrees, for example, preferably 75 degrees. When the tire of the vehicle drives to the bayonet 2 in the extended position, the bayonet 2 forms an angle of about 75 degrees with the horizontal plane, so that the bayonet 2 is close to the outer contour of the tire and can puncture the tire.

[0071] Further, the base plate 1 is provided with a limiting slope 130, when the bayonet 2 rotates to the extended position, the side wall of the bayonet 2 abuts against the limiting slope 130, so that when the rear tire is pressed against the bayonet 2, the bayonet 2 remains in the extended position. The limiting slope 130 can be integrally provided with the base plate 1.

[0072] Of course, the limiting slope 130 can also be provided separately from the base plate 1, that is, in the embodiment, the base plate 1 is provided with a limiting block 13 near the two ends of the bayonet 2, the limiting block 13 is detachably fixedly connected with the base plate 1, specifically, the limiting block 13 is detachably fixedly connected with the base plate 1 by bolts, to ensure that the limiting block 13 is convenient to disassemble and assemble. The limiting block 13 is in the first mounting groove 101, and the limiting slope 130 is on the limiting block 13. The limiting slope 130 is arranged on the limiting block 13, and the limiting block 13 is detachably fixedly connected with the base plate 1, so that the limiting slope 130 is convenient to process, and when it is necessary to adjust the inclination angle of the bayonet 2 in the extended position, the limiting block 13 can be replaced, for example, limiting blocks 13 with limiting slope angles of 70 degrees, 75 degrees, 80 degrees and 85 degrees can be prepared in advance, and the corresponding limiting block 13 can be selected according to the test requirements.

[0073] In actual use, the base plate 1 in the embodiment is provided with the limiting block 13, and the limiting slope 130 is arranged on the limiting block 13. When the bayonet 2 rotates to the extended position, one side of the bayonet 2 abuts against and is attached to the limiting slope 130. When the rear tire of the vehicle drives to the bayonet 2, the limiting slope 130 is attached to the side of the bayonet 2, so that the bayonet 2 can be stably kept in the extended position, and the blade 23 of the bayonet 2 can puncture the rear tire of the vehicle.

[0074] Specifically, the bayonet 2 in the embodiment is hinged to the base plate 1 through the pivot 20, and the two ends of the pivot 20 respectively extend from the two ends of the bayonet 2 and are hinged to the base plate 1. In order to facilitate the installation of the pivot 20, a blind hole penetrating through one side surface of the base plate 1 is arranged on the base plate 1, and the pivot 20 can be inserted into the blind hole from the opening side of the blind hole to hinge the bayonet 2 to the base plate 1, and after installation, a bolt is arranged at the opening end of the blind hole, which can limit the pivot 20 from being separated from the blind hole, and ensure the structural stability of the pivot 20 during use.

[0075] The driving member 4 is arranged as a torsion spring, and a torsion spring is arranged near each end of the pivot 20, that is, the two torsion springs are arranged to abut against the two ends of the bayonet 2 at the same time, so that the bayonet 2 can be quickly rotated to the extended position, and the force balance during the rotation of the bayonet 2 is ensured. One torsion arm of the torsion spring abuts against the base plate 1, and the other torsion arm of the torsion spring abuts against the side wall of the bayonet 2, and the torsion of the torsion spring makes the bayonet 2 have a tendency to move to the extended position. When the bayonet 2 is in the folded position, the torsion spring is in a compressed state.

[0076] The torsion arm of the torsion spring is arranged in an L shape, and a first limiting groove 100 is arranged on the base plate 1, and a second limiting groove 21 is arranged on the side wall of the bayonet 2, both the first limiting groove 100 and the second limiting groove 21 are arranged as rectangular grooves, and the two torsion arms of the torsion spring are arranged in the first limiting groove 100 and the second limiting groove 21 respectively, and the first limiting groove 100 and the second limiting groove 21 limit the two torsion arms of the torsion spring respectively, so that during use, the two torsion arms of the torsion spring cannot slip on the bayonet 2 and the base plate 1, and the bayonet 2 is not unstable.

[0077] The bayonet 2 of the embodiment comprises a shaft sleeve 22 and a plurality of blades 23 arranged axially along the shaft sleeve 22, and the pivot 20 is arranged in the shaft sleeve 22. The bayonet 2 is provided with a notch near each end of the shaft sleeve 22, which facilitates the installation of the torsion spring. The shaft sleeve 22 is provided with a locking groove 220 in a direction away from the blades 23, and the locking member 30 is provided with a locking tongue 301, which can be locked into the locking groove 220 to lock the bayonet 2 in the folded position. When the bayonet 2 is in the folded position, the locking groove 220 on the shaft sleeve 22 is arranged horizontally or substantially horizontally, and is aligned with the locking tongue 301 of the locking member 30, so that the locking tongue 301 of the locking member 30 can be smoothly locked in. When the bayonet 2 is rotated to the extended position, correspondingly, the locking groove 220 is no longer in the horizontal position and is no longer aligned with the locking tongue 301, and at this time the locking tongue 301 cannot be locked into the locking groove 220, that is, the locking member 30 cannot lock the bayonet 2 in the extended position.

[0078] In practical use, the driving component 4 in this embodiment is set as a torsion spring. When the bayonet 2 is in the retracted position, the bayonet 2 compresses the torsion spring. When the locking component 30 locked on the bayonet 2 releases the bayonet 2, the restoring torque of the torsion spring drives the bayonet 2 to rotate to the extended position. The structure is simple, the cost is low, and the response is sensitive.

[0079] like Figures 4-7 As shown, in this embodiment, the first button 31 is provided with a first driving slope 311. Specifically, a driving block protrudes from the middle of the first button 31, and the first driving slope 311 is located on the driving block, with the first driving slope 311 facing downwards. The locking member 30 is provided with a first driven slope 302. Specifically, a driven block is provided at one end of the locking member 30 near the first button 31, and the first driven slope 302 is located on the driven block. The first driving slope 311 and the first driven slope 302 move against each other. Preferably, the inclination angle of the first driving slope 311 is the same as the inclination angle of the first driven slope 302 to ensure a good fit and stability during transmission.

[0080] In actual use, when the first button 31 is pressed, the first button 31 pushes against the first driven inclined surface 302 through the first driving inclined surface 311, causing the locking member 30 to move away from the bayonet 2, thereby causing the locking member 30 to disengage from the locking groove 220 on the bayonet 2. The locking member 30 releases its lock on the bayonet 2. As soon as the locking member 30 releases its lock on the bayonet 2, the torque of the driving member 4, i.e., the torsion spring, will drive the bayonet 2 to rotate, causing the bayonet 2 to rotate from the retracted position to the extended position.

[0081] A first reset spring 34 is provided between the first button 31 and the substrate 1. The first button 31 has a spring hole, and the substrate 1 also has a spring hole. One end of the first reset spring 34 is confined in the spring hole on the first button 31, and the other end is confined in a corresponding spring hole on the substrate 1, ensuring that the first reset spring 34 will not shift during use. When the first button 31 is pressed down, the first reset spring 34 is compressed. When the downward pressure on the first button 31 is removed, the reset force of the first reset spring 34 can drive the first button 31 to reset, facilitating the next pressing of the first button 31.

[0082] A first tension spring 35 is provided between the locking member 30 and the base plate 1. Similarly, spring holes for mounting the first tension spring 35 are also provided at corresponding positions on the locking member 30 and the base plate 1. The two ends of the first tension spring 35 are respectively located in the two spring holes to ensure that the first tension spring 35 will not shift during use. The elastic force of the first tension spring 35 causes the locking member 30 to tend to move in its locking direction. When the first button 31 is pressed, the first button 31 drives the locking member 30 to unlock, that is, the locking member 30 moves towards the side of the first button 31, and the first tension spring 35 is compressed. The first tension spring 35 is always tensioned on the locking member 30. When the locking member 30 locks the bayonet 2 in the retracted position, it ensures that the locking member 30 locks reliably, thereby ensuring that the bayonet 2 can stay stably in the retracted position. Furthermore, when the bayonet 2 rotates from the extended position to the retracted position, as long as the locking groove 220 on the bayonet 2 is aligned with the locking tongue 301 of the locking member 30, the first tension spring 35 will drive the locking tongue 301 to lock into the locking groove 220, thus locking the bayonet 2 in the retracted position.

[0083] In actual use, when the first button 31 is pressed, the first driving inclined surface 311 on the first button 31 presses against the first driven inclined surface 302 on the locking member 30, and the locking member 30 moves towards the side closer to the first button 31. At this time, the locking tongue 301 of the locking member 30 disengages from the locking groove 220 on the bayonet 2, releasing the locking of the bayonet 2. The torque of the torsion spring causes the bayonet 2 to rotate quickly to the outward position.

[0084] Since the locking groove 220 on the bayonet 2 is no longer aligned with the locking tongue 301 of the locking member 30 after the bayonet 2 rotates to the outward position, the locking tongue 301 cannot be locked into the locking groove 220. Preferably, if it is necessary to further improve the stability of the bayonet 2 in the outward position, a locking groove can be added to the bushing 22 of the bayonet 2. The angle between this locking groove and the locking groove 220 is the angle by which the bayonet 2 rotates from the retracted position to the outward position, for example, 75 degrees. When the bayonet 2 rotates to the outward position, the locking groove on the bayonet 2 aligns with the locking tongue 301, and the locking tongue 301 locks into the locking groove, so that the locking member 30 locks the bayonet 2 in the outward position.

[0085] Furthermore, in this embodiment, the second button 33 is provided with a second driving slope 331. Specifically, a driving block protrudes from the middle of the second button 33, and the second driving slope 331 is located on the driving block and faces downward. Preferably, the structure of the second button 33 is the same as that of the first button 31, so that the second button 33 and the first button 31 can be interchanged during use, reducing installation difficulty and improving versatility. The limiting member 32 is provided with a second driven slope 321. Specifically, a driven block is provided at one end of the limiting member 32 near the second button 33, and the second driven slope 321 is located on the driven block. The second driving slope 331 and the second driven slope 321 move against each other. Preferably, the inclination angle of the second driving slope 331 is the same as the inclination angle of the second driven slope 321 to ensure the fitting effect and the stability during transmission.

[0086] In actual use, when the second button 33 is pressed, the second button 33 pushes against the second driven inclined surface 321 through the second driving inclined surface 331, causing the limiting member 32 to move away from the first button 31. This causes the limiting member 32 to be removed from the bottom of the first button 31, and the limiting member 32 releases the downward pressure restriction on the first button 31. At this time, the first button 31 can be pressed down because the first button 31 is no longer restricted from being pressed down by the limiting member 32.

[0087] A second return spring 36 is provided between the second button 33 and the base plate 1. Corresponding spring holes are provided on both the second button 33 and the base plate 1. Both ends of the second return spring 36 are respectively confined within the spring holes of both, ensuring that the second return spring 36 will not shift during use. In actual use, when the second button 33 is pressed, the second return spring 36 is compressed. When the downward pressure on the second button 33 is removed, the elastic force of the second return spring 36 causes the second button 33 to return to its original position, facilitating the next press.

[0088] A second tension spring 37 is provided between the limiting member 32 and the base plate 1. Corresponding spring holes are provided on the limiting member 32 and the base plate 1. The two ends of the second tension spring 37 are respectively restricted within the spring holes of both. The elastic force of the second tension spring 37 causes the limiting member 32 to tend to move closer to the first button 31.

[0089] In actual use, when there is no force applied to the second button 33, the elastic force of the second tension spring 37 keeps the limiting member 32 below the first button 31, thus ensuring the limiting member 32's effect of restricting the downward pressure of the first button 31. When the second button 33 is pressed, the second button 33 drives the limiting member 32 to move away from the first button 31, the limiting member 32 releases its downward pressure restriction on the first button 31, and the second tension spring 37 is compressed, storing force for the limiting member 32 to reset.

[0090] In this embodiment, the bayonet 2 is arranged along the width direction of the substrate 1, the first button 31 is also arranged along the width direction of the substrate 1, and the second button 33 is also arranged along the width direction of the substrate 1; that is, the length direction of the bayonet 2, the length direction of the first button 31, and the length direction of the second button 33 are all consistent with the width direction of the substrate 1, and the bayonet 2, the first button 31, and the second button 33 are arranged in parallel and at intervals.

[0091] The lengths of the bayonet 2, the first button 31, and the second button 33 are all greater than the widths of the front, middle, and rear tires. This ensures that when the car is traveling at high speed on the base plate 1, the front and middle tires can accurately press down on the second button 33 and the first button 31, and also ensures that the bayonet 2 can accurately puncture the rear tire. The first button 31 and the second button 33 have semi-circular protrusions along their length, and multiple protrusions are arranged side by side on both buttons to facilitate the tire pressing down on the corresponding buttons.

[0092] Furthermore, the distance between the first button 31 and the second button 33 generally needs to be smaller than the distance between the front tire and the middle tire. This ensures that after the front tire presses down on the second button 33, the middle tire has not yet reached the first button 31, or has just reached the first button 31. This ensures that after the front tire presses down on the second button 33, causing the limiting member 32 to release its downward pressure limit on the first button 31, the middle tire can press down on the first button 31. Further, the distance between the first button 31 and the bayonet 2 generally needs to be smaller than the distance between the middle tire and the rear tire. This ensures that after the middle tire presses down on the first button 31, the rear tire has not yet reached the bayonet 2 in its outward position. This ensures that the bayonet 2 can puncture the rear tire.

[0093] like Figure 8 As shown, the substrate 1 in this embodiment is provided with a first ramp portion 110 and a second ramp portion 120 at both ends. The first ramp portion 110 and the second ramp portion 120 can ensure the stability of the vehicle when it drives onto the substrate 1 and when it drives off the substrate 1. The tilt angle of the first ramp portion 110 and the second ramp portion 120 can both be set to about 10 degrees.

[0094] The substrate 1 is provided with a second mounting groove 102 and a third mounting groove 103 in sequence. The first button 31 is movably disposed in the second mounting groove 102, and the second button 33 is movably disposed in the third mounting groove 103. Similar to the first mounting groove 101, the second mounting groove 102 and the third mounting groove 103 also have upward openings.

[0095] The substrate 1 is also provided with a first sliding groove 104 and a second sliding groove 105. The locking member 30 is slidably disposed in the first sliding groove 104 to realize the telescopic movement of the locking member 30. The limiting member 32 is slidably disposed in the second sliding groove 105 to realize the telescopic movement of the limiting member 32.

[0096] Specifically, in this embodiment, the substrate 1 includes a detachably connected bottom plate 12 and top plate 11. The top plate 11 and the bottom plate 12 are fixed together by bolts to ensure convenient assembly and disassembly between the top plate 11 and the bottom plate 12. The first mounting groove 101, the second mounting groove 102, the third mounting groove 103, the first sliding groove 104, and the second sliding groove 105 are at least partially formed on the bottom plate 12, and partially formed on the top plate 11. It should be explained that if the substrate 1 is not configured as a separate bottom plate 12 and top plate 11, but rather as a single substrate 1, it would be inconvenient to machine the first sliding groove 104 and the second sliding groove 105 into the substrate 1, and the installation of the bayonet 2, the locking member 30, and the limiting member 32 would also be inconvenient. However, configuring the substrate 1 as a separate bottom plate 12 and top plate 11 not only facilitates the machining of the grooves and holes inside the substrate 1, but also facilitates the installation of corresponding components in the corresponding grooves and holes.

[0097] The working principle of the vehicle tire blowout testing device in this embodiment is as follows:

[0098] The front wheel of the car presses on the second button 33. The second driving ramp 331 on the second button 33 presses against the second driven ramp 321 on the limiting member 32, causing the limiting member 32 to move away from the first button 31, thus releasing the limiting member 32 from pressing down on the first button 31. The middle tire of the car presses on the first button 31. The first driving ramp 311 on the first button 31 presses against the first driven ramp 302 on the locking member 30, causing the locking member 30 to move away from the bayonet 2. The locking tongue 301 of the locking member 30 disengages from the locking groove 220 on the bayonet 2, thus releasing the locking member 30 from locking the bayonet 2. The torque of the torsion spring drives the bayonet 2 to rotate from the retracted position to the extended position. The rear tire of the car drives towards the bayonet 2, and the upward-sloping blade 23 of the bayonet 2 punctures the rear tire, achieving the purpose of precisely puncturing the rear tire of a three-axle car.

[0099] Example 2:

[0100] This embodiment of a tire blowout test method uses the tire blowout test device from Embodiment 1. Before the test, the locking member 30 locks the piercing blade 2 in the retracted position, and the limiting member 32 restricts the first button 31 from being pressed down. The test method includes:

[0101] First, the car drives towards the base plate 1, and the front tire of the car passes over the bayonet 2. At this time, the bayonet 2 is in the retracted position and will not puncture the front tire. Then, the front tire passes over the first button 31, and at this time, the limiting member 32 prevents the first button 31 from being pressed down by the front tire.

[0102] Then, the front tire moves towards and presses down on the second button 33, releasing the pressure restriction of the limiting member 32 on the first button 31. Meanwhile, the middle tire of the car passes over the bayonet 2, which is in the retracted position and will not puncture the front tire. The middle tire then moves towards and presses down on the first button 31, releasing the locking member 30 from locking the bayonet 2. The driving member 4 drives the bayonet 2 to rotate from the retracted position to the extended position, and the limiting block 13 keeps the bayonet 2 in the extended position.

[0103] Finally, the car's rear tire drove toward bayonet 2, and the upward-sloping blade 23 of bayonet 2 punctured the rear tire.

[0104] In this solution, the vehicle tire blowout testing device can accurately cause the rear tires of a three-axle vehicle to blow out, while effectively preventing the front and middle tires from being accidentally punctured. The overall structure is simple and the cost is low.

Claims

1. A vehicle tire blowout testing device, wherein the bottom of the vehicle is sequentially provided with a front tire, a middle tire, and a rear tire, characterized in that, The test apparatus includes: A substrate, wherein the substrate is provided with a first mounting groove facing upward; A bayonet is rotatably disposed in the first mounting slot. The bayonet has a retracted position and an extended position in the first mounting slot. When the bayonet is in the retracted position, the bayonet is housed in the first mounting slot. When the bayonet is in the extended position, the blade of the bayonet extends obliquely upward from the first mounting slot. A locking mechanism and a driving component are provided. The locking mechanism includes a locking member, a first button, a limiting member, and a second button. The locking member is movably disposed on the base plate and can lock the bayonet in the retracted position. The first button is movably disposed on the base plate and moves against the locking member, and the first button can drive the locking member to release the locking of the bayonet. The limiting member is movably disposed below the first button and can limit the first button from being pressed down. The second button is movably disposed on the base plate and moves against the limiting member, and the second button can drive the limiting member to release the downward restriction on the first button. The driving component can drive the bayonet to switch from the retracted position to the extended position. The front tire of the car first presses down on the second button, thereby releasing the downward pressure restriction of the limiting member on the first button; The middle tire of the car presses down on the first button, releasing the locking member from locking the bayonet, and the driving member drives the bayonet to switch from the retracted position to the extended position; The rear tire of the vehicle finally runs over the bayonet, which punctures the rear tire.

2. The vehicle tire blowout testing device according to claim 1, characterized in that, The bayonet rotates at an angle of less than 90 degrees from the retracted position to the extended position; The base plate is provided with a limiting inclined surface. When the bayonet is rotated to the outward position, the side wall of the bayonet abuts against the limiting inclined surface, so that when the rear tire presses against the bayonet, the bayonet remains in the outward position.

3. The vehicle tire blowout testing device according to claim 2, characterized in that, The bayonet rotates from the retracted position to the extended position at an angle between 70 and 80 degrees. A limiting block is provided at each end of the substrate near the bayonet. The limiting block is detachably and fixedly connected to the substrate and is located in the first mounting groove. The limiting inclined surface is located on the limiting block.

4. The vehicle tire blowout testing device according to claim 1, characterized in that, The bayonet is hinged to the base plate via a pivot. The driving component is a torsion spring, with a torsion spring sleeved at each end near the rotating shaft. One torsion arm of the torsion spring abuts against the base plate, and the other torsion arm of the torsion spring abuts against the side wall of the bayonet. When the bayonet is in the retracted position, the torsion spring is in a compressed state.

5. The vehicle tire blowout testing device according to claim 4, characterized in that, The torsion arm is L-shaped; The base plate is provided with a first limiting groove, the side wall of the bayonet is provided with a second limiting groove, and the two torsion arms of the torsion spring are respectively disposed in the first limiting groove and the second limiting groove.

6. The vehicle tire blowout testing device according to claim 4, characterized in that, The bayonet includes a bushing and a plurality of blades arranged axially along the bushing, and the rotating shaft passes through the bushing; The bushing has a locking groove along the direction away from the blade, and the locking member has a locking tongue that can be locked into the locking groove to lock the bayonet in the retracted position.

7. The vehicle tire blowout testing device according to claim 1, characterized in that, The first button is provided with a first driving slope, and the locking member is provided with a first driven slope. The first driving slope and the first driven slope move against each other. The first button pushes the first driven slope through the first driving slope, causing the locking member to extend and retract to release the lock on the bayonet. A first reset spring is provided between the first button and the substrate. When the first button is pressed down, the first reset spring is compressed. A first tension spring is provided between the locking member and the base plate. The elastic force of the first tension spring causes the locking member to tend to move in its locking direction. When the first button drives the locking member to unlock, the first tension spring is compressed.

8. The vehicle tire blowout testing device according to claim 1, characterized in that, The second button is provided with a second driving slope, and the limiting member is provided with a second driven slope. The second driving slope and the second driven slope move against each other. The second button pushes against the second driven slope through the second driving slope, causing the limiting member to extend and retract, so as to release the downward pressure limitation on the first button. A second reset spring is provided between the second button and the substrate. When the second button is pressed down, the second reset spring is compressed. A second tension spring is provided between the limiting member and the substrate. The elastic force of the second tension spring causes the limiting member to tend to move closer to the first button. When the second button drives the limiting member to release the downward pressure limitation on the first button, the second tension spring is compressed.

9. The vehicle tire blowout testing apparatus according to claim 1, 7, or 8, characterized in that, The substrate has a first slope portion and a second slope portion at both ends; The substrate is provided with a second mounting groove and a third mounting groove in sequence. The first button is movably and vertically disposed in the second mounting groove, and the second button is movably and vertically disposed in the third mounting groove. The substrate is provided with a first sliding groove and a second sliding groove, the locking member is slidably disposed in the first sliding groove, and the limiting member is slidably disposed in the second sliding groove; The substrate includes a detachably connected bottom plate and a top plate. The first mounting groove, the second mounting groove, the third mounting groove, the first sliding groove, and the second sliding groove are at least partially formed on the bottom plate, and the other part is formed on the top plate.

10. The vehicle tire blowout testing device according to claim 1, characterized in that, The bayonet is arranged along the width direction of the substrate, the first button is arranged along the width direction of the substrate, and the second button is arranged along the width direction of the substrate. The length of the bayonet, the length of the first button, and the length of the second button are all greater than the width of the front tire, the middle tire, and the rear tire.

11. A method for testing a tire blowout of an automobile, employing the tire blowout testing device as described in any one of claims 1-10, wherein before the test, the locking member locks the piercing blade in the retracted position, and the limiting member restricts the first button from being pressed down, characterized in that, The test method includes: The vehicle drives toward the base plate, its front tires passing over the bayonet and over the first button, and the limiting member prevents the first button from being pressed down by the front tires; The front tire drives toward the second button and presses down on the second button, thereby releasing the limiting member from restricting the pressing down of the first button; The vehicle's middle tire passes over the bayonet, moves toward the first button, and presses down the first button to release the locking member from locking the bayonet; the driving member drives the bayonet to rotate from the retracted position to the extended position; The rear tire of the vehicle drove toward the bayonet, and the blade of the bayonet punctured the rear tire.

Images