A tire bursting device

Abstract

The present invention relates to the field of automobile inspection technology, and discloses a tire bursting device, comprising: a bracket, wherein a caster is provided at the bottom of the bracket; a turntable assembly rotatably mounted on the bracket and used to be fixedly connected to the vehicle wheel rim; a rotating knife group fixedly mounted on the bracket, comprising a knife holder, a cutter, a double torsion spring, and an electrically controlled locking member, wherein the knife holder is used to be fixed to the bracket, the cutter is rotatably connected to the knife holder, the elastic member is used to provide a driving force when the cutter rotates, and the electrically controlled locking member is electrically connected to an external control system and is used to release the cutter to cut the tire, and to lock the cutter when it is reset. The beneficial effects of the present invention are as follows: its installation method is suitable for vehicles traveling on various roads, and the installation is convenient and quick. In addition, its operation is convenient and flexible, and the tire can be burst at any time while the vehicle is running, and it can adapt to the requirements of tire burst tests in various scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile detection, in particular to a tire bursting device. Background Art

[0002] Tire blowouts often occur very suddenly, leaving drivers very little time to take remedial measures. Vehicles are often difficult to control, and sudden tire blowouts will seriously damage the force balance and directional controllability of the moving vehicle. In particular, vehicles traveling at high speeds will experience severe side skidding and tailspinning under the action of huge inertial forces. Severe tire blowout accidents can cause vehicles to roll continuously and collide with guardrails or other vehicles, resulting in extremely serious multi-vehicle traffic accidents.

[0003] Therefore, in order to improve the stability of the vehicle operating system, it is generally necessary to simulate the vehicle's instantaneous tire blowout on different roads (straight roads, curves), different types of tires, and different speeds, and sudden changes in the vehicle condition to provide a comprehensive evaluation of the vehicle's handling stability.

[0004] To simulate a tire blowout, the key technology is to achieve rapid tire deflation. Three main methods exist for simulating a tire blowout: First, a detonator is installed on the outside of the tire to blast the tire. However, detonators are hazardous materials, subject to strict regulations and long approval cycles, making it difficult to control the test time. Second, a deflation duct is deployed to deflate the tire. However, this structure is complex, time-consuming to install, and takes a long time to deflate, which differs from the actual conditions of a tire blowout. Third, a tire puncture device is placed in the vehicle's path. This device is at a certain height, causing a certain impact on high-speed vehicles, compromising the safety of the test. Furthermore, the driver must drive towards the detonator during the test, which requires high driving skills and has a low success rate. Furthermore, during the actual simulation, the driver may subconsciously slow down when approaching the blowout area due to fear, resulting in the vehicle failing to reach the intended speed and failing to simulate the actual blowout conditions. Summary of the Invention

[0005] The purpose of the present invention is to provide a tire bursting device, aiming to solve the problems of the tire bursting device in the prior art such as long deflation time, complex structure and inability to simulate actual tire bursting conditions.

[0006] In order to solve the above technical problems, the present invention provides a tire bursting device, comprising:

[0007] A bracket, wherein casters are provided at the bottom of the bracket;

[0008] A turntable assembly is rotatably mounted on the bracket, is fixedly connected to the rim, and can rotate synchronously with the wheel around the first axis;

[0009] The rotary knife assembly includes a knife holder, a cutter, an elastic member and an electrically controlled locking member. The knife holder is fixedly connected to the bracket, the cutter is rotatably connected to the knife holder, the rotation axis of the cutter is perpendicular to the first axis, the elastic member is used to provide driving force when the cutter rotates, and the electrically controlled locking member is electrically connected to an external control system for releasing the cutter to cut the tire and locking the cutter when it is reset.

[0010] Furthermore, the elastic member is a double torsion spring, the connecting rods at both ends of the double torsion spring are fixed to the knife seat, and the torsion rod in the middle of the double torsion spring abuts against the cutter and has a movement tendency to drive the cutter to rotate.

[0011] Furthermore, the cutter includes a knife body, the knife body is provided with a hollow rotating shaft for rotationally connected to the knife seat, the two ends of the hollow rotating shaft are respectively passed through the double torsion springs, and a screw is installed on the knife seat, the screw is passed through the hollow rotating shaft and a locking nut is fixed at the end.

[0012] Furthermore, a clamping shaft is fixed on the blade body, and the clamping shaft is used to be clamped in the clamping slot of the electric control locking member. The two opposite side walls of the clamping slot are symmetrically provided with limiting protrusions that can be retracted by electric control, and the clamping shaft is locked in the clamping slot by the limiting protrusions.

[0013] Furthermore, the turntable assembly includes a rotating shaft, a turntable and a connector for fixing to the rim. The rotating shaft and the bracket are rotatably connected, and the connectors are evenly distributed along the circumference of the rotating shaft on the side of the turntable close to the rim.

[0014] Furthermore, the turntable is evenly distributed with strip holes for installation and positioning with the connecting piece, the intersection of the central axis of each strip hole along the length direction is located on the rotation axis of the shaft, and the installation height of the caster and the bracket is adjustable.

[0015] Furthermore, the connecting member includes a cylinder and a square protrusion, the square protrusion is connected to one end of the cylinder, a sleeve hole is opened on the end face of the cylinder facing away from the square protrusion, an inner thread is provided on the inner wall of the sleeve hole, and a threaded hole is opened on the end face of the square protrusion facing away from the cylinder.

[0016] Furthermore, the bracket includes a vertically arranged first support rod, a second support rod is horizontally arranged on the first support rod, a mounting hole is opened on the second support rod, a bearing for rotationally connecting to the turntable assembly is embedded in the mounting hole, and the turntable assembly is rotationally connected to the second support rod through the bearing.

[0017] Furthermore, the knife holder includes a first side plate, a second side plate, a baffle plate and a third side plate, the first side plate is used to be fixedly connected to the bracket, the second side plate is arranged in contact with the first side plate, the baffle plate is used to connect the second side plate and the third side plate, and the second side plate, the baffle plate and the third side plate cooperate to form a mounting groove for installing the cutter and the elastic member.

[0018] Furthermore, a connecting piece for mounting the electric-controlled locking member is fixed on the knife seat.

[0019] Compared with the prior art, the tire burst device according to the embodiment of the present invention has the following advantages: a caster is provided at the bottom of the bracket, the turntable assembly can be quickly fixed to the rim and rotate synchronously with the wheel, the cutter punctures the tire through the driving force provided by the elastic member to simulate a tire burst, and can achieve rapid deflation with a simple structure. At the same time, the external control system locks and releases the cutter through an electronically controlled locking member, and can deflate at any time while the vehicle is running, thereby simulating the actual tire burst condition of the vehicle and saving simulation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a reference diagram of the tire bursting device in use according to an embodiment of the present invention;

[0021] Figure 2 1 is a schematic diagram of the assembly of a rotary knife assembly of a tire bursting device according to an embodiment of the present invention;

[0022] Figure 3 2 is a schematic structural diagram of a rotating blade assembly of a tire bursting device according to an embodiment of the present invention;

[0023] Figure 4 2. It is a schematic structural diagram of an electrically controlled locking member of a tire bursting device according to an embodiment of the present invention;

[0024] Figure 5 2. It is a schematic structural diagram of a cutter of a tire bursting device according to an embodiment of the present invention;

[0025] Figure 6 2 is a schematic structural diagram of a turntable assembly of a tire bursting device according to an embodiment of the present invention;

[0026] Figure 7 2 is a schematic structural diagram of a connecting member of a tire bursting device according to an embodiment of the present invention.

[0027] In the figure, 1. bracket; 11. first support rod; 12. second support rod; 13. bearing; 2. caster; 3. turntable assembly; 31. rotating shaft; 32. turntable; 321. strip hole; 33. connecting piece; 331. cylinder; 332. square protrusion; 4. rotating knife group; 41. knife seat; 411. first side plate; 412. second side plate; 413. baffle; 414. third side plate; 42. cutter; 421. knife body; 422. hollow rotating shaft; 423. clamping shaft; 424. socket; 43. elastic piece; 431. connecting rod; 432. torsion bar; 44. electric locking piece; 441. slot; 442. limiting protrusion; 5. connecting piece. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0030] In describing the present invention, it should be understood that the terms "first," "second," etc., are used to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0031] like Figure 1 As shown, a tire bursting device according to a preferred embodiment of the present invention is used to deflate a tire, thereby simulating a tire bursting condition. Figure 1 A in the middle is a wheel, which rotates around the first axis.

[0032] The tire bursting device of the present invention includes a bracket 1, which serves as a mounting carrier and has a caster 2 at the bottom of the bracket 1; a turntable assembly 3, which is rotatably mounted on the bracket 1 and is used to be fixedly connected to the rim and can rotate synchronously with the wheel around a first axis.

[0033] Rotating blade group 4, used to puncture the tire to deflate, see Figure 1 、 Figure 2 、 Figure 3, which is fixedly mounted on the bracket 1, and includes a knife seat 41, a cutter 42, an elastic member 43 and an electrically controlled locking member 44, wherein the knife seat 41 is used to be fixed to the bracket 1, the cutter 42 and the knife seat 41 are rotatably connected, and the rotation axis of the cutter 42 is perpendicular to the first axis, and the elastic member 43 is used to provide a driving force when the cutter 42 rotates. Specifically, in this embodiment, the elastic member 43 can be a double torsion spring, with connecting rods 431 at both ends of the double torsion spring and a torsion bar 432 in the middle. When installed, the connecting rods 431 at both ends of the double torsion spring and the knife The seat 41 is fixed, and the torsion bar 432 in the middle of the double torsion spring abuts against the cutter 42, tending to drive the cutter 42 in rotation. The driving force provided by the double torsion spring drives the cutter 42 in rotation. An electronically controlled locking member 44 is connected to an external control system, releasing the cutter 42 to cut the tire and locking it when it returns to its original position. The tire bursting device provided by the present invention not only cuts the tire to deflate it, but also causes the compressed air within the tire to instantly explode, thereby simulating the actual tire bursting conditions of a vehicle. Its installation method is suitable for various road vehicles and is quick and easy. Furthermore, its operation is convenient and flexible, allowing for a tire burst at any time while the vehicle is in motion, adapting to the requirements of various tire burst testing scenarios.

[0034] Further, see Figure 5 The cutter 42 includes a knife body 421, which is provided with a cutting edge and a knife back. The knife back can abut against the torsion bar 432, and the cutting edge is used to puncture the tire. To facilitate the rotation of the knife body 421, the knife body 421 is provided with a hollow rotating shaft 422 for rotationally connecting with the knife holder 41. The two ends of the hollow rotating shaft 422 are respectively passed through the double torsion springs, and a screw is installed on the knife holder. The screw is passed through the hollow rotating shaft 422 and a locking nut is fixed at the end.

[0035] In order to facilitate the electric control locking member 44 to lock and release the cutter 42, refer to Figure 4 A coupling shaft 423 is fixed to the cutter body 421. The coupling shaft 423 is configured to engage with a slot 441 of the electrically controlled locking member 44. Two opposing walls of the slot 441 are symmetrically provided with electrically retractable limiting protrusions 442. The coupling shaft 423 is locked within the slot 441 by the limiting protrusions 442. The electrically controlled locking member 44 is a common electrical component. The retraction of the limiting protrusion 442 can be controlled by a control system. Specifically, when the electrically controlled locking member 44 locks the cutter 42, the limiting protrusion 442 extends, locking the coupling shaft 423 within the slot 441. When the cutter 42 needs to be released, the limiting protrusion 442 retracts, causing the coupling shaft 423 to slide out of the slot 441.

[0036] Furthermore, since the cutter 42 needs to push the torsion bar 432 to twist when resetting, a socket 424 is provided on the cutter 42. A tool is inserted into the socket 424 to reset the cutter 42, thereby avoiding safety accidents caused by the tester directly touching the cutter 42 with his hands.

[0037] Furthermore, the turntable assembly 3 is fixedly connected to the wheel A, and includes a rotating shaft 31, a turntable 32, and a connecting member 33 for fixing to the rim. The rotating shaft 31 is rotatably connected to the bracket 1, and the connecting member 33 is evenly distributed along the circumference of the rotating shaft 31 on the side of the turntable 32 close to the rim.

[0038] Furthermore, in order to apply to tire blowouts of wheels of the same structure and different sizes, refer to Figure 6 , strip holes 321 for mounting and positioning the connecting members 33 are evenly distributed on the turntable 32, and the intersection of the central axes of each strip hole 321 along the length direction is located on the rotation axis of the rotating shaft 31, that is, the connecting member 33 can slide along the length direction of the strip hole, thereby adjusting the installation position with wheels of different sizes. At the same time, as the wheel size changes, the height of the bracket 1 from the ground also changes. In this embodiment, the installation height of the caster 2 and the bracket 1 is adjustable, which can be achieved by setting pads of different thicknesses between the caster 2 and the bracket 1.

[0039] Furthermore, the connecting member 33 is used to be fixedly connected to the screw on the rim, see Figure 7 The connecting member 33 includes a cylinder 331 and a square protrusion 332. The square protrusion 332 is connected to one end of the cylinder 331. A sleeve hole is opened on the end face of the cylinder 331 facing away from the square protrusion 332. The inner wall of the sleeve hole is provided with an internal thread. A threaded hole is opened on the end face of the square protrusion facing away from the cylinder.

[0040] Further, see Figure 1 The bracket 1 includes a first vertical support rod 11, a second support rod 12 is horizontally arranged on the first support rod 11, and a mounting hole is opened on the second support rod 12. A bearing 13 for rotating connection with the turntable 32 component 3 is embedded in the mounting hole. The turntable component 3 is rotatably connected to the second support rod 12 through the bearing 13. Figure 6 It can be seen that the rotating shaft 31 is inserted into the bearing 13. In order to axially limit the rotating shaft 31, a pin hole is radially opened at one end of the rotating shaft 31 close to the bearing 13, and a limiting step is provided at the other end for installation and limiting with the second support rod 12.

[0041] Furthermore, the knife seat 41 includes a first side plate 411, a second side plate 412, a baffle 413 and a third side plate 414, wherein the first side plate 411 is used to be fixedly connected to the bracket 1, the second side plate 412 is arranged in contact with the first side plate 411, and the baffle 413 is used to connect the second side plate 412 and the third side plate 414. Figure 3The second side plate 412, the baffle 413, and the third side plate 414 cooperate to form a mounting groove for mounting the cutter 42 and the elastic member 43. Furthermore, a connecting piece 5 for mounting the electric-controlled locking member 44 is fixed to the knife holder 41. In this embodiment, the connecting piece 5 is fixedly mounted on the first side plate 411.

[0042] In summary, an embodiment of the present invention provides a tire burst device, in which a caster is provided at the bottom of the bracket, the turntable assembly can be quickly fixed to the rim and rotate synchronously with the wheel, and the cutter punctures the tire through the driving force provided by the elastic member to simulate a tire burst, which can achieve rapid deflation and has a simple structure. At the same time, the external control system locks and releases the cutter through an electronically controlled locking member, and deflation can be performed at any time while the vehicle is running, thereby simulating the actual tire burst condition of the vehicle and saving simulation time.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A tire bursting device, characterized in that: include: A bracket, wherein casters are provided at the bottom of the bracket; A turntable assembly is rotatably mounted on the bracket, is fixedly connected to the rim, and can rotate synchronously with the wheel around the first axis; A rotary knife assembly includes a knife holder, a cutter, an elastic member, and an electrically controlled locking member. The knife holder is fixedly connected to the bracket, the cutter is rotatably connected to the knife holder, the rotation axis of the cutter is perpendicular to the first axis, the elastic member is used to provide a driving force when the cutter rotates, and the electrically controlled locking member is electrically connected to an external control system for releasing the cutter to cut the tire and locking the cutter when it is reset. The turntable assembly includes a rotating shaft, a turntable, and a connecting piece for fixing to the rim, wherein the rotating shaft is rotatably connected to the bracket, and the connecting piece is evenly distributed along the circumference of the rotating shaft on a side of the turntable close to the rim; The bracket includes a first support rod arranged vertically, a second support rod is horizontally arranged on the first support rod, a mounting hole is opened on the second support rod, a bearing for rotatably connecting with the turntable assembly is embedded in the mounting hole, and the turntable assembly is rotatably connected to the second support rod through the bearing; The knife holder includes a first side plate, a second side plate, a baffle plate and a third side plate. The first side plate is used to be fixedly connected to the bracket, the second side plate is arranged in contact with the first side plate, and the baffle plate is used to connect the second side plate and the third side plate. The second side plate, the baffle plate and the third side plate cooperate to form a mounting groove for mounting the cutter and the elastic member.

2. The tire bursting device according to claim 1, characterized in that: The elastic member is a double torsion spring, the connecting rods at both ends of the double torsion spring are fixed to the knife seat, and the torsion rod in the middle of the double torsion spring abuts against the cutter and has a movement tendency to drive the cutter to rotate.

3. The tire bursting device according to claim 2, wherein: The cutter includes a knife body, which is provided with a hollow rotating shaft for rotationally connecting to the knife seat, and the two ends of the hollow rotating shaft are respectively passed through the double torsion springs. A screw is installed on the knife seat, and the screw is passed through the hollow rotating shaft and a locking nut is fixed at the end.

4. The tire bursting device according to claim 3, characterized in that: A clamping shaft is fixed on the cutter body, and the clamping shaft is used to be clamped in the clamping slot of the electric control locking member. The two opposite side walls of the clamping slot are symmetrically provided with limiting protrusions that can be retracted and extended by electric control. The clamping shaft is locked in the clamping slot by the limiting protrusions.

5. The tire bursting device according to claim 1, wherein: The turntable is evenly distributed with strip holes for mounting and positioning with the connecting piece. The intersection of the central axis of each strip hole along the length direction is located on the rotation axis of the shaft. The installation height of the caster and the bracket is adjustable.

6. The tire bursting device according to claim 1, wherein: The connecting piece includes a cylinder and a square protrusion, the square protrusion is connected to one end of the cylinder, a sleeve hole is opened on the end face of the cylinder facing away from the square protrusion, an inner thread is provided on the inner wall of the sleeve hole, and a threaded hole is opened on the end face of the square protrusion facing away from the cylinder.

7. The tire bursting device according to claim 1, wherein: A connecting piece for mounting the electric-controlled locking member is fixed on the knife seat.

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