Novel tire burst device suitable for national standard, American standard and Korean standard passenger cars

Abstract

The utility model relates to the technical field of automobile testing, and discloses a novel tire burst device suitable for national standard, American standard and Korean standard passenger cars, in the scheme, a first arm is installed on a vehicle hub through matching of a connecting part and a connecting disc, the first arm is connected with a second arm, and a cutting assembly is installed on the second arm; therefore, in the running process of the vehicle, the side face of a vehicle tire is cut through the cutting assembly, the tire is rapidly deflated, and a real tire burst scene of the vehicle is simulated; meanwhile, the first arm and the second arm can stretch out, draw back and adjust, so that tire burst simulation tests can be carried out on hubs of different sizes, and the adaptability of the device is improved; the mounting position of the cutting assembly relative to the second arm is adjusted, so that the distance between the cutter and the side face of the tire is adjusted, and the size of a notch is controllable; the device is flexible to use, can be deflated at any time, is faster in deflation, is safer and more reliable, and can meet the requirements of American standards and Korean standards on tire burst tests.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing technology, and in particular to a novel tire blowout device for passenger vehicles applicable to Chinese, American and Korean standards. Background Technology

[0002] Tire blowouts severely disrupt a vehicle's balance and directional control. Especially at high speeds, the immense inertial forces can cause violent skidding and fishtailing. Severe blowouts can lead to vehicle rollovers and collisions with guardrails or other vehicles, resulting in multi-vehicle accidents. Currently, tire blowout simulation devices are widely used to test and evaluate tire performance under different conditions, particularly its resistance to punctures and potholes.

[0003] Currently, the following methods are commonly used to simulate tire blowouts, such as the burst method, the deflation method, and the ground-mounted blade method. The burst method is highly dangerous and inconvenient to use in practice; the deflation method does not cause tread damage, resulting in a significant difference from the actual tire blowout state and failing to realistically simulate the blowout situation; the ground-mounted blade method requires a high level of driver skill and can only be performed at fixed points, which also makes it inconvenient to use in practice. None of the above methods meet the requirements of the US and Korean standards for tire blowout testing. Utility Model Content

[0004] The purpose of this invention is to provide a novel tire blowout device for passenger vehicles that is applicable to Chinese, American, and Korean standards, in order to solve the problems of inconvenient use and inability to simulate real tire blowout scenarios in existing tire blowout testing devices.

[0005] To achieve the above objectives, embodiments of this application provide a novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards, having intersecting X and Z directions, including:

[0006] A connecting disc is fixedly connected to the wheel hub coaxially so that the connecting disc rotates synchronously with the wheel hub.

[0007] The frame has a first arm that can extend and retract along the X direction and a second arm that can extend and retract along the Z direction; one end of the first arm along the X direction has a connecting part, which is coaxially and rotatably mounted on the side of the connecting plate away from the hub; a roller is installed at the bottom of the second arm.

[0008] A cutting assembly is mounted on the frame. The cutting assembly has a rotatable cutter, the rotation axis of which extends along the X direction. The rotation trajectory of the cutter has a power-accumulating position and a power-releasing position, which drives the cutter to rotate from the power-accumulating position to the power-releasing position for cutting tires.

[0009] In some embodiments of this application, the first arm includes a first transverse arm, a second transverse arm, and a first locking member;

[0010] The first transverse arm and the second transverse arm are slidably assembled along the X direction, with one end of the first transverse arm along the X direction connected to the connecting portion, and the end of the second transverse arm away from the connecting portion connected to the second arm.

[0011] The first locking member is used to lock the first transverse arm and the second transverse arm.

[0012] In some embodiments of this application, the second arm includes a first vertical arm, a second vertical arm, and a second locking member;

[0013] The first vertical arm and the second vertical arm are slidably assembled along the Z-axis, and the second vertical arm is located below the first vertical arm; the roller is installed at the bottom of the second vertical arm, the first vertical arm and the second horizontal arm are connected, and the cutting assembly is disposed on the first vertical arm;

[0014] The second locking member is used to lock the first vertical arm and the second vertical arm.

[0015] In some embodiments of this application, the cutting assembly further includes a mounting bracket, a force-applying component, and a third locking component;

[0016] The mounting bracket is mounted on the first vertical arm, the cutter is rotatably mounted on the mounting bracket, the third locking member is used to lock the cutter in the power storage position, release the cutter, and the force application member drives the cutter to rotate from the power storage position to the release position.

[0017] In some embodiments of this application, the force-applying component is a double torsion spring, with both ends of the double torsion spring fixedly connected to the mounting bracket, and the torsion bar in the middle of the double torsion spring abutting against the cutter;

[0018] When the cutter is in the power-accumulating position, the double torsion spring tends to drive the cutter to rotate toward the release position.

[0019] In some embodiments of this application, the mounting bracket is provided with a rotating shaft extending along the X direction, and the cutter is rotatably mounted on the rotating shaft, with both ends of the rotating shaft respectively passing through the double torsion spring.

[0020] In some embodiments of this application, the cutter has a locking rod extending along the X direction, the third locking member has a locking groove, and the locking groove has an opening communicating with the outside on the side facing the wheel hub; the cutter rotates from the release position to the storage position, so that the locking rod enters the locking groove from the opening;

[0021] The locking groove has a retractable stop, which is used to stop the locking rod and lock the cutter in the power storage position.

[0022] In some embodiments of this application, the connecting disk is provided with at least two strip holes, each strip hole extending radially along the connecting disk, and all the strip holes are spaced apart around the axial center line of the connecting disk;

[0023] The new tire blowout device for passenger vehicles applicable to Chinese, American and Korean standards also includes a connector, which passes through the strip hole and is used to install the connecting plate onto the wheel hub.

[0024] In some embodiments of this application, the connector includes a connecting rod, a screw, and a washer; the connecting rod has a first internal threaded hole on the side facing the wheel hub, and a second internal threaded hole on the side facing away from the wheel hub; the washer is disposed on the side of the connecting plate facing away from the wheel hub; and the screw passes through the washer and the strip hole in sequence and is threaded into the second internal threaded hole.

[0025] In some embodiments of this application, the novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards further includes a reinforcing arm, one end of which is connected to the first transverse arm, and the other end of which is connected to the second vertical arm.

[0026] This utility model embodiment discloses a novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards. Compared with existing technologies, its advantages are as follows: In this solution, the first arm is installed on the vehicle wheel hub through the cooperation of the connecting part and the connecting plate. The first arm is connected to the second arm, and the cutting component is installed on the second arm. This allows the cutting component to cut the sidewall of the vehicle tire during vehicle movement and quickly deflate the tire, simulating a real tire blowout scenario. Simultaneously, both the first and second arms are telescopic, allowing for simulated tire blowout tests on vehicle wheel hubs of different sizes, thus improving the adaptability of the device. This device is flexible in use, allows for deflation at any time, and deflates faster, more safely, and reliably, meeting the requirements of American and Korean standards for tire blowout testing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0029] Figure 3 This is a schematic diagram of the first side plate of this utility model in the removed state;

[0030] Figure 4This is a schematic diagram of the structure of the cutting component of this utility model after disassembly;

[0031] Figure 5 This is an exploded view of the cutting component of this utility model;

[0032] Figure 6 This is a schematic diagram showing the fitting relationship between the locking rod and the locking groove of this utility model;

[0033] Figure 7 This is a schematic diagram of the cutter of this utility model in the power storage position;

[0034] Figure 8 This is a schematic diagram showing the cutter of this utility model in the released position;

[0035] Figure 9 This is a schematic diagram showing the pretensioning arm of this utility model in its disassembled state;

[0036] Figure 10 This is a schematic diagram showing the connecting frame and connecting plate of this utility model in their separated states;

[0037] Figure 11 This is a schematic diagram of the adapter structure of this utility model;

[0038] Figure 12 This is a schematic diagram of the present invention installed on a wheel hub.

[0039] In the diagram, 1 is the frame; 11 is the first arm; 111 is the connecting part; 112 is the first transverse arm; 1121 is the first reinforcing plate; 1122 is the first slide groove; 1123 is the slide cavity; 113 is the second transverse arm; 114 is the first locking element; 12 is the second arm; 121 is the first vertical arm; 1211 is the third slide groove; 122 is the second vertical arm; 1221 is the second reinforcing plate; 1222 is the second slide groove; and 123 is the second locking element.

[0040] 2. Roller; 3. Cutting assembly; 31. Mounting bracket; 311. Rotating shaft; 312. First side plate; 3121. First adjusting groove; 313. Second side plate; 3131. Second adjusting groove; 314. Limiting plate; 32. Cutter; 321. Locking rod; 322. Reset hole; 33. Force-applying component; 331. Fixed end; 332. Torsion bar; 34. Third locking component; 341. Locking groove; 342. Opening; 343. Stopping component;

[0041] 4. Connecting plate; 41. Strip hole; 5. Connector; 51. Connecting rod; 511. First internal threaded hole; 512. Second internal threaded hole; 52. Screw; 53. Washer;

[0042] 6. Reinforcing arm; 7. Pre-tightening arm; 8. Adapter; 81. Fixed air pipe; 82. Rotating air pipe; 83. Mounting plate; 9. Wheel hub; 91. Tire. Detailed Implementation

[0043] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as an obstruction of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0045] Traditional tire blowout tests for vehicles mainly include detonator bursting, rim deflation, tire deflation, ground-mounted blade method, and rim side-cutting method. The detonator bursting method results in long approval and reporting times, makes it difficult to control test duration, and is inconvenient for practical application. The rim deflation method has a slightly longer preparation time and is less efficient, and differs from actual tire blowout scenarios. The tire deflation method also has a long preparation time and low efficiency; when tire pressure is high, the tire sidewall is prone to leakage, and the deflation time is slightly longer, differing from actual tire blowouts, and cannot be used for tests with inner tubes. The ground-mounted blade method requires a high level of driving skill and has a low margin for error. The rim side-cutting method cannot monitor tire pressure changes in real time, and the cut position is uncontrollable. None of the above methods meet the requirements of US and Korean standards for tire blowout testing.

[0046] like Figures 1-12As shown, this application proposes a novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards. It has intersecting X and Z directions and includes a connecting plate 4, a frame 1, and a cutting assembly 3. The connecting plate 4 is coaxially fixedly connected to the wheel hub 9 so that the connecting plate 4 can rotate synchronously with the wheel hub 9. The frame 1 has a first arm 11 that can be telescopically adjusted along the X direction and a second arm 12 that can be telescopically adjusted along the Z direction. One end of the first arm 11 along the X direction is connected to a connecting part 111, which is coaxially rotatably mounted on the side of the connecting plate 4 away from the wheel hub 9. A roller 2 is installed at the bottom of the second arm 12, and the rotation axis of the roller 2 is parallel to the rotation axis of the wheel hub 9. The frame 1 and the wheel hub 9 are connected through the cooperation of the connecting plate 4 and the connecting part 111. When the vehicle is in motion, the connecting plate 4 rotates synchronously with the vehicle's wheel hub 9. At this time, the connecting plate 4 rotates relative to the connecting part 111, thereby driving the frame 1 to move synchronously with the vehicle through the roller 2 located at the bottom of the second arm 12 (e.g., ...). Figure 12 (As shown); the cutting assembly 3 is mounted on the frame 1. The cutting assembly 3 has a rotatable cutter 32. The rotation axis of the cutter 32 extends along the X direction. The rotation trajectory of the cutter 32 has a power storage position and a release position. The cutter 32 is driven to rotate from the power storage position to the release position to cut the side of the tire 91 (cut a slit on the side of the tire 91) to simulate a vehicle tire blowout scenario.

[0047] In this embodiment, the extension lengths of the first arm 11 and the second arm 12 are first adjusted according to the size of the wheel hub 9 of the vehicle being tested. Figure 12 As shown, when the connecting plate 4 is installed on the vehicle wheel hub 9, the cutter 32 is positioned opposite the sidewall of the tire 91. When the roller 2 at the bottom of the second arm 12 contacts the road surface, the first arm 11 is in a horizontal position, thus completing the pre-test preparations. The vehicle is then started and driven at a certain speed. During the vehicle's movement, the cutter 32 is driven to rotate from the power storage position to the release position. During this rotation, the cutter 32 cuts the sidewall of the tire 91, creating a slit (for rapid deflation), thus simulating a tire blowout. This method of making a slit on the sidewall of the tire 91 provides a higher degree of realism to the actual tire blowout scenario, thus recreating the true tire blowout situation. This device is flexible, allows for rapid deflation at any time, and is safer and more reliable. It can be used for inner tube tests and meets the requirements of US and Korean standards for tire blowout testing. Furthermore, the device is easy to install and flexible to use, and is applicable to tires of different specifications and models.

[0048] In some embodiments of this application, such as Figure 1As shown, the first arm 11 includes a first transverse arm 112, a second transverse arm 113, and a first locking member 114; the connecting part 111 and one end of the first transverse arm 112 along the X direction are fixedly connected, and the first transverse arm 112 and the second transverse arm 113 are slidably assembled along the X direction, as shown. Figure 3 As shown, the first transverse arm 112 has a sliding cavity 1123 for accommodating the second transverse arm 113. The end of the sliding cavity 1123 away from the connecting portion 111 communicates with the outside, allowing the second transverse arm 113 to extend from the first transverse arm 112. The outer periphery of the second transverse arm 113 fits against the inner wall of the sliding cavity 1123. Figure 3 As shown, the first locking member 114 includes a bolt, and a threaded hole is provided on the side wall of the first transverse arm 112. The bolt is threaded into the threaded hole and the bolt is screwed in so that the bolt abuts against the side wall of the second transverse arm 113 located in the sliding cavity 1123, thereby locking the second transverse arm 113 and keeping the first arm 11 at the adjusted telescopic length.

[0049] In some embodiments of this application, such as Figure 1 As shown, the second arm 12 includes a first vertical arm 121, a second vertical arm 122, and a second locking member 123; the first vertical arm 121 and the second vertical arm 122 are slidably assembled along the Z-direction. Specifically, the first vertical arm 121 is located above the second vertical arm 122, and the first vertical arm 121 and the second horizontal arm 113 are connected, as shown. Figure 3 , Figure 4 As shown, at least two third sliding grooves 1211 are provided at the bottom of the first vertical arm 121. These three third sliding grooves 1211 are spaced apart along a plane perpendicular to the X and Z directions. The number of second locking members 123 matches the number of third sliding grooves 1211 (each third sliding groove 1211 corresponds to one second locking member 123). Each second locking member 123 includes a bolt and a nut. A threaded hole is provided at the upper end of the second vertical arm 122. The position of the threaded hole in the X direction corresponds to the position of the third sliding groove 1211. The bolt is passed sequentially through the threaded hole and the third sliding groove 1211 along the X direction. Then, the nut is screwed onto the end of the bolt that extends out of the third sliding groove 1211, so that the nut abuts against the first vertical arm 121 (e.g., ...). Figure 3 , Figure 4 As shown), this enables locking and positioning between the first vertical arm 121 and the second vertical arm 122. When the operator adjusts the extension length of the second arm 12 to the required length, the second locking member 123 locks and positions it, keeping the second arm 12 at the adjusted length.

[0050] In this embodiment, the roller 2 is mounted on the bottom of the second vertical arm 122, and the cutting assembly 3 is mounted on the first vertical arm 121. By adjusting the extension length of the first arm 11, the cutter 32 is positioned opposite the sidewall of the tire 91. By adjusting the extension length of the second arm 12, the first arm 11 is kept in a horizontal position (e.g., ...). Figure 12 (As shown).

[0051] In some embodiments of this application, such as Figure 5 As shown, the cutting assembly 3 also includes a mounting bracket 31, a force-applying component 33, and a third locking component 34. The mounting bracket 31 is mounted on the first vertical arm 121, and the cutter 32 is rotatably mounted on the mounting bracket 31. The third locking component 34 is fixedly mounted on the mounting bracket 31 and is used to lock the cutter 32 in the power-accumulating position. When the cutter 32 is in the power-accumulating position, the force-applying component 33 applies a certain force to the cutter 32, which causes the cutter 32 to tend to rotate toward the release position. When the third locking component 34 is released from locking the cutter 32, the force-applying component 33 drives the cutter 32 to rotate from the power-accumulating position to the release position. During the rotation of the cutter 32, a cut is made on the side wall of the tire 91, thereby simulating the scenario of a vehicle tire blowout.

[0052] In some embodiments of this application, such as Figure 2 , Figure 5 As shown, the force-applying component 33 is a double torsion spring. Both ends of the double torsion spring have fixed ends 331, and the middle of the double torsion spring has a torsion bar 332. The two fixed ends 331 are used to fix the double torsion spring to the mounting bracket 31 (the mounting bracket 31 has a limiting plate 314, and the two fixed ends 331 are respectively fixed to the limiting plate 314). The torsion bar 332 abuts against the cutter 32; Figure 3 As shown, when the cutter 32 is in the charging position, the double torsion spring, under the action of the torsion bar 332, drives the cutter 32 to rotate towards the release position, as follows. Figure 7 The diagram shows the cutter 32 in the power-charging position. Figure 8 The diagram shows the cutter 32 in the release position. When the cutter 32 rotates to the release position, it is stopped by the limit plate 314 and will not continue to rotate, thereby limiting the rotation stroke of the cutter 32.

[0053] In some embodiments of this application, such as Figure 5As shown, the mounting bracket 31 is provided with a rotating shaft 311 extending along the X direction, and the cutter 32 is rotatably mounted on the rotating shaft 311. Both ends of the rotating shaft 311 are respectively inserted into double torsion springs. Specifically, the mounting bracket 31 includes a first side plate 312 and a second side plate 313 spaced apart along the X direction. The second side plate 313 is connected to the first vertical arm 121. The rotating shaft 311 and the limiting plate 314 are connected between the first side plate 312 and the second side plate 313 (thus achieving the connection between the first side plate 312 and the second side plate 313). Figure 5 As shown, a plurality of second adjustment slots 3131 are provided on the second side plate 313, such as Figure 1 As shown, the second side plate 313 is fixedly mounted on the first vertical arm 121 by a plurality of matching bolts and nuts (the first vertical arm 121 is provided with threaded holes corresponding to the position of the second adjusting groove 3131), as... Figure 2 As shown, the bolt passes through the threaded hole and the second adjusting groove 3131 in sequence, and a nut is threaded onto one end of the bolt extending out of the second adjusting groove 3131, thereby fixing the second side plate 313 onto the first vertical arm 121, and further fixing the mounting bracket 31 onto the first vertical arm 121; as shown Figure 7 , Figure 12 As shown, the position of the mounting bracket 31 along the plane perpendicular to the X and Z directions can be adjusted by adjusting the position of the bolt relative to the second adjustment groove 3131, thereby adjusting the distance between the cutter 32 and the sidewall of the tire 91. This allows for adjustable cut size on the sidewall of the tire 91. The closer the cutter 32 is to the sidewall of the tire 91, the larger the cut, and vice versa, thus meeting different testing requirements.

[0054] In some embodiments of this application, such as Figure 6 , Figure 8 As shown, the cutter 32 has a locking rod 321 extending along the X direction, and the third locking member 34 has a locking groove 341, with an opening 342 communicating with the outside on the side facing the hub 9; the cutter 32 rotates from the release position to the charging position, causing the locking rod 321 to enter the locking groove 341 through the opening 342; the locking groove 341 has a retractable stop member 343, which is used to stop the locking rod 321, locking the cutter 32 in the charging position; as Figure 6As shown, the locking rod 321 is located in the locking groove 341 and is blocked by the stop member 343. At this time, although the cutter 32 has a tendency to rotate toward the release position, it is limited by the stop member 343, so that the cutter 32 can be locked in the power-accumulating position. The stop member 343 in this solution can be an electric control device, such as: the third locking member 34 is provided with an electric rod for driving the stop member 343 to move. When it is necessary to lock the cutter 32 in the power-accumulating position, the electric rod drives the stop member 343 to extend into the locking groove 341 and block the locking rod 321 located in the locking groove 341. When it is necessary to release the lock, the electric rod drives the stop member 343 to exit from the locking groove 341, thereby causing the cutter 32 to rotate toward the release position.

[0055] like Figure 8 As shown, when the cutter 32 needs to be rotated from the release position to the power-accumulating position again, in order to avoid the operator directly touching the cutter 32 with their hand, two spaced reset holes 322 can be provided on the cutter 32. Then, an external tool is inserted into the reset hole 322, and the operator holds the tool and applies force to drive the cutter 32 to rotate from the release position to the power-accumulating position, thus avoiding the operator's hand directly touching the cutter 32 and causing a safety accident.

[0056] In some embodiments of this application, such as Figure 10 As shown, the connecting plate 4 is provided with at least two strip holes 41, each strip hole 41 extending radially along the connecting plate 4, and all the strip holes 41 are spaced apart around the axial center line of the connecting plate 4; the new tire blowout device for passenger cars applicable to national standards, American standards and Korean standards also includes a connector 5, which passes through the strip holes 41 and is used to install the connecting plate 4 onto the wheel hub 9; the strip holes 41 are provided to accommodate wheel hubs 9 of different sizes and specifications, so that the connecting plate 4 can be fixedly installed on wheel hubs 9 of different sizes and specifications through the connector 5, thereby improving the flexibility of the device.

[0057] In some embodiments of this application, such as Figure 10 As shown, connector 5 includes a connecting rod 51, a screw 52, ​​and a washer 53; Figure 2 As shown, the connecting rod 51 has a first internal threaded hole 511 on the side facing the hub 9 (before installing this device, the nut on the hub 9 needs to be removed, and then the first threaded hole and the bolt on the hub 9 need to be threaded together), as Figure 10As shown, the connecting rod 51 has a second internal threaded hole 512 on the side away from the wheel hub 9. The washer 53 is located on the side of the connecting plate 4 away from the wheel hub 9, and the diameter of the washer 53 is larger than the width of the strip hole 41. The screw 52 passes through the washer 53 and the strip hole 41 in sequence and is threaded into the second internal threaded hole 512. Finally, the connecting plate 4 is fixedly installed on the wheel hub 9 and can rotate synchronously with the wheel hub 9. By adjusting the position of the connecting rod 51 relative to the strip hole 41, it is possible to install wheel hubs 9 of different sizes and specifications.

[0058] In some embodiments of this application, such as Figure 1 As shown, to improve the structural strength of the device, the new tire blowout device for passenger cars applicable to Chinese, American, and Korean standards also includes a reinforcing arm 6. One end of the reinforcing arm 6 is connected to the first transverse arm 112, and the other end of the reinforcing arm 6 is connected to the second vertical arm 122. To accommodate the telescopic adjustment of the first arm 112 and the second arm 122, adjustable connecting structures are provided on the first transverse arm 112 and the second vertical arm 122, such as: a second reinforcing plate 1221 is provided on the second vertical arm 122, and a second sliding groove 1222 extending along the Z direction is provided on the second reinforcing plate 1221 (the second sliding groove 1222 is provided through the thickness direction of the second reinforcing plate 1221). A first reinforcing plate 1121 is provided at the bottom of a horizontal arm 112. The first reinforcing plate 1121 is provided with a first sliding groove 1122 extending along the X direction (the first sliding groove 1122 is provided through the thickness direction of the first reinforcing plate 1121). The two ends of the reinforcing arm 6 are connected to the first reinforcing plate 1121 and the second reinforcing plate 1221 respectively by bolts and nuts. When the length of the first arm 11 and the second arm 12 is adjusted, the relative positions of the bolts and the first sliding groove 1122 and the second sliding groove 1222 are adjusted synchronously to connect the two ends of the reinforcing arm 6 to the first horizontal arm 112 and the second vertical arm 122 respectively, thereby improving the structural strength of the device.

[0059] To further improve the flexibility of the device, enabling it to perform simulated tire blowout tests on both wheel hubs 9 on both sides of the vehicle (tire 91 at the left front, left rear, right front, and right rear of the vehicle can all be tested for tire blowout), such as... Figure 5 As shown, a plurality of first adjustment grooves 3121 are provided on the first side plate 312, such as Figure 1As shown, when a simulated tire blowout test is needed on tire 91 on the other side of the vehicle, simply remove the reinforcing arm 6, then completely remove the second lateral arm 113 from the first lateral arm 112, rotate the first lateral arm 112 180°, and then insert the second lateral arm 113 into the sliding cavity 1123 inside the first lateral arm 112, locking it with the first locking member 114. Then, remove the mounting bracket 31 from the first vertical arm 121 and rotate the mounting bracket 31 180°. At this point, the mounting bracket... 31 is fixedly mounted on the first vertical arm 121 via the first side plate 312, and the device can then be mounted on the wheel hub 9 on the opposite side of the vehicle. In order to ensure that the first horizontal arm 112 can still be connected to the reinforcing arm 6 after rotating the first horizontal arm 112 by 180°, a first reinforcing plate 1121 is also provided above the first horizontal arm 112 (a first reinforcing plate 1121 is provided at each of the upper and lower ends of the first horizontal arm 112) to realize the connection between the first horizontal arm 112 and the reinforcing arm 6 after rotating the first horizontal arm 112 by 180°.

[0060] like Figure 11 , Figure 12 As shown, the new tire blowout device for passenger cars applicable to Chinese, American, and Korean standards in this solution also includes an adapter 8 for real-time measurement of tire pressure of tire 91. The adapter 8 includes a mounting plate 83, a fixed air pipe 81, and a rotating air pipe 82. The rotating air pipe 82 and the mounting plate 83 are coaxially rotatably connected, and the rotating air pipe 82 and the fixed air pipe 81 are rotatably connected. Figure 9 As shown, a through hole is provided in the connecting part 111 along its axial direction, and the adapter 8 is installed in the through hole. Specifically, the mounting plate 83 is fixedly installed on the connecting part 111, and the rotating air pipe 82 is set on the side of the mounting plate 83 facing the wheel hub 9. The rotating air pipe 82 is connected to a hose, and the other end of the hose is connected to the air nozzle on the wheel hub 9. The fixed air pipe 81 is also connected to a hose, and the other end of the hose is connected to a tire pressure sensor for real-time monitoring of the tire pressure of the tire 91. The tire pressure sensor is connected to the host through a tire pressure sensor connection line, so that the real-time change curve of the tire pressure can be observed intuitively, which meets the requirements of the US standard and Korean standard for tire blowout testing.

[0061] like Figure 9 , Figure 12 As shown, the new tire blowout device for passenger cars applicable to Chinese, American, and Korean standards in this solution also includes a pretensioning arm 7. The pretensioning arm 7 is fixedly installed on the connecting part 111 by bolts. During testing, a rope is connected to one end of the pretensioning arm 7 away from the connecting part 111, and the other end of the rope is fixed at a suitable position on the vehicle. An upward force is applied to the pretensioning arm 7 through the rope (so that the roller 2 installed at the bottom of the second arm 12 can always press against the road surface), thereby enabling the new tire blowout device for passenger cars applicable to Chinese, American, and Korean standards to move stably and synchronously with the vehicle.

[0062] The working process of this utility model is as follows: First, according to the size parameters of the wheel hub 9 of the test vehicle, the extension length of the first arm 11 and the second arm 12 is adjusted. Then, the connecting plate 4 is fixedly installed on the wheel hub 9 through the connecting piece 5. A rope is connected to the end of the pre-tightening arm 7 away from the connecting part 111 and the rope is fixed at a suitable position on the vehicle. Then, the vehicle is started. During the vehicle's operation, the cutter 32 is controlled to rotate from the power storage position to the release position, thereby cutting a slit on the side wall of the tire 91 to simulate the real scenario of a tire blowout.

[0063] In summary, this utility model embodiment provides a novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards. In this design, the first arm 11 is mounted on the vehicle wheel hub 9 via a connecting part 111 and a connecting plate 4. The first arm 11 is connected to the second arm 12, and the cutting component 3 is mounted on the second arm 12. This allows the cutting component 3 to cut the sidewall of the vehicle tire 91 during vehicle movement, simulating a real tire blowout scenario. Both the first arm 11 and the second arm 12 are telescopic, allowing for simulated tire blowout tests on wheel hubs of different sizes, thus improving the device's adaptability. By adjusting the installation position of the cutting component 3 relative to the second arm 12, the distance between the cutter 32 and the sidewall of the tire 91 can be adjusted, achieving controllable cut size. The design incorporates an adapter 8 and an air hose to monitor tire pressure information, enabling operators to obtain real-time tire pressure data. This device is flexible in use, allows for rapid and safe deflation, and meets the requirements of American and Korean standards for tire blowout testing.

[0064] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards, comprising intersecting X and Z directions, characterized in that, include: The connecting disc (4) is fixedly connected to the hub (9) on the same axis so that the connecting disc (4) rotates synchronously with the hub (9); The frame (1) has a first arm (11) that can extend and retract along the X direction and a second arm (12) that can extend and retract along the Z direction; the first arm (11) has a connecting part (111) at one end along the X direction, and the connecting part (111) is rotatably mounted on the side of the connecting plate (4) away from the hub (9) on the same axis; a roller (2) is installed at the bottom of the second arm (12); A cutting assembly (3) is provided on the frame (1). The cutting assembly (3) has a rotatable cutter (32). The rotation axis of the cutter (32) extends along the X direction. The rotation trajectory of the cutter (32) has a power storage position and a release position, which drives the cutter (32) to rotate from the power storage position to the release position for cutting tires (91).

2. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards as described in claim 1, characterized in that, The first arm (11) includes a first transverse arm (112), a second transverse arm (113), and a first locking member (114); The first transverse arm (112) and the second transverse arm (113) are slidably assembled along the X direction. One end of the first transverse arm (112) along the X direction is connected to the connecting part (111), and the end of the second transverse arm (113) away from the connecting part (111) is connected to the second arm (12). The first locking member (114) is used to lock the first transverse arm (112) and the second transverse arm (113).

3. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards as described in claim 2, characterized in that, The second arm (12) includes a first vertical arm (121), a second vertical arm (122), and a second locking member (123); The first vertical arm (121) and the second vertical arm (122) are slidably assembled along the Z direction, and the second vertical arm (122) is located below the first vertical arm (121); the roller (2) is installed at the bottom of the second vertical arm (122); the first vertical arm (121) and the second horizontal arm (113) are connected; and the cutting assembly (3) is disposed on the first vertical arm (121). The second locking member (123) is used to lock the first vertical arm (121) and the second vertical arm (122).

4. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to claim 3, characterized in that, The cutting assembly (3) also includes a mounting bracket (31), a force-applying component (33), and a third locking component (34); The mounting bracket (31) is disposed on the first vertical arm (121), the cutter (32) is rotatably mounted on the mounting bracket (31), the third locking member (34) is used to lock the cutter (32) in the power storage position, release the locking of the cutter (32), and the force application member (33) drives the cutter (32) to rotate from the power storage position to the release position.

5. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to claim 4, characterized in that, The force-applying component (33) is a double torsion spring, with both ends of the double torsion spring fixedly connected to the mounting bracket (31), and the torsion bar (332) in the middle of the double torsion spring abutting against the cutter (32); When the cutter (32) is in the power-accumulating position, the double torsion spring tends to drive the cutter (32) to rotate toward the release position.

6. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards as described in claim 5, characterized in that, The mounting bracket (31) is provided with a rotating shaft (311) extending along the X direction, and the cutter (32) is rotatably mounted on the rotating shaft (311), with both ends of the rotating shaft (311) passing through the double torsion spring.

7. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to claim 4, characterized in that, The cutter (32) has a locking rod (321) extending along the X direction, and the third locking member (34) has a locking groove (341), and the locking groove (341) has an opening (342) communicating with the outside on the side facing the hub (9); the cutter (32) rotates from the release position to the storage position, so that the locking rod (321) enters the locking groove (341) through the opening (342); The locking groove (341) has a retractable stop (343) for blocking the locking rod (321) so that the cutter (32) is locked in the power storage position.

8. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to claim 1, characterized in that, The connecting disk (4) is provided with at least two strip holes (41), each strip hole (41) extends radially along the connecting disk (4), and all the strip holes (41) are spaced apart around the axial center line of the connecting disk (4); The new tire blowout device for passenger cars applicable to national, American and Korean standards also includes a connector (5), which is inserted into the strip hole (41) and is used to install the connecting plate (4) onto the wheel hub (9).

9. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to claim 8, characterized in that, The connector (5) includes a connecting rod (51), a screw (52), and a washer (53); the connecting rod (51) has a first internal threaded hole (511) on the side facing the hub (9), and a second internal threaded hole (512) on the side away from the hub (9); the washer (53) is disposed on the side of the connecting disc (4) away from the hub (9); the screw (52) passes through the washer (53) and the strip hole (41) in sequence and is threaded into the second internal threaded hole (512).

10. The novel tire blowout device for passenger vehicles applicable to Chinese, American, and Korean standards according to any one of claims 3-7, characterized in that, The new tire blowout device for passenger cars applicable to national, American and Korean standards also includes a reinforcing arm (6), one end of which is connected to the first transverse arm (112), and the other end of which is connected to the second vertical arm (122).

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