CN117109950A

CN117109950A - Tire burst device

Info

Publication number: CN117109950A
Application number: CN202311178021.8A
Authority: CN
Inventors: 许志光; 高明秋; 张志波; 张子文; 周苏; 彭月明; 张恒
Original assignee: China Automobile Research And Test Center Guangzhou Co ltd
Current assignee: China Automobile Research And Test Center Guangzhou Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2023-11-24

Abstract

The invention relates to the technical field of automobile detection, and discloses a tire burst device, which comprises: the bottom of the bracket is provided with casters; the turntable assembly is rotatably arranged on the bracket and is fixedly connected with a vehicle rim; the rotary knife set is fixedly arranged on the support and comprises a knife holder, a knife, a double torsion spring and an electric control locking piece, wherein the knife holder is used for being fixed with the support, the knife is rotationally connected with the knife holder, the elastic piece is used for providing driving force when the knife rotates, and the electric control locking piece is electrically connected with an external control system and used for releasing the knife to cut a tire and locking when the knife resets. The beneficial effects of the invention are as follows: the mounting mode is suitable for vehicles running on various roads, is convenient and quick to mount, is convenient and flexible to operate, can burst tires at any time when the vehicles run, and can meet the requirements of tire burst tests in various different scenes.

Description

Tire burst device

Technical Field

The invention relates to the technical field of automobile detection, in particular to a tire burst device.

Background

The tire burst is very sudden, the time for taking remedial measures for a driver is very short, the vehicle is difficult to control, the stress balance and the direction operability of the running vehicle are seriously damaged by the sudden tire burst, particularly, the vehicle in high-speed running is subjected to severe sideslip and tail flick under the action of huge inertia force, and serious tire burst accidents can lead to continuous rolling of the vehicle and collision with guardrails or other vehicles, so that extremely serious multi-vehicle collision traffic accidents are caused.

Therefore, in order to improve the stability of the vehicle operation system, it is generally required to simulate the instantaneous tire burst of the vehicle under different roads (straight road and curved road), different types of tires and different speeds, and the vehicle condition changes suddenly, so as to give comprehensive evaluation of the vehicle operation stability.

To realize the simulation of tire burst, the key technology is to realize the rapid deflation of the tire, and three main methods exist for the simulation of tire burst in the prior art: firstly, arranging a detonation device on the outer side of a tire to burst the tire, wherein the detonation device belongs to dangerous goods, is strict in management and long in approval period, and cannot control test time; secondly, the tire is deflated by arranging the deflation conduit device, but the structure is complex, the installation is time-consuming, the deflation time is long, and the actual working condition of tire burst is different; and thirdly, a tire burst device for puncturing the tire is arranged on a vehicle running route, and has a certain height, so that a certain impact can be generated on a vehicle running at a high speed, and the safety of a test is influenced. In addition, when in test, a driver needs to aim at the tire burst device to run, the requirements on the driving skill of the driver are high, and the success rate of the test is low. Meanwhile, in the actual simulation process, the driver consciously decelerates due to the fact that the tire burst cannot reach the preset speed because of the subconscious deceleration due to the fear factors when approaching the tire burst area, and the actual tire burst working condition cannot be simulated.

Disclosure of Invention

The purpose of the invention is that: the utility model provides a tire burst device, aim at solving among the prior art tire burst device gassing time long, the structure is complicated, can't simulate the problem of actual tire burst operating mode.

In order to solve the above technical problems, the present invention provides a tire burst device, including:

the bottom of the bracket is provided with casters;

the turntable assembly is rotatably arranged on the bracket, is fixedly connected with the rim and can synchronously rotate along with the wheel around the first axis;

the rotary knife set comprises a knife holder, a knife, an elastic piece and an electric control locking piece, wherein the knife holder is fixedly connected with the support, the knife is rotationally connected with the knife holder, the rotation axis of the knife is perpendicular to the first axis, the elastic piece is used for providing driving force when the knife rotates, and the electric control locking piece is electrically connected with an external control system and used for releasing the knife to cut a tire and locking when the knife resets.

Furthermore, the elastic piece is a double torsion spring, the connecting rods at two ends of the double torsion spring are fixed with the tool apron, and the torsion bar in the middle of the double torsion spring is abutted on the cutter and has a movement trend of driving the cutter to rotate.

Still further, the cutter is including the cutter body, be equipped with on the cutter body be used for with the blade holder rotates the hollow pivot of connection, the both ends of hollow pivot wear to establish respectively on the double torsion spring, install the screw on the blade holder, the screw wears to establish in the hollow pivot and the tip is fixed with lock nut.

Still further, be fixed with the joint axle on the cutter body, the joint axle is used for the joint in the draw-in groove of automatically controlled locking piece, the opposite both sides wall symmetry of draw-in groove is equipped with through automatically controlled telescopic spacing arch, the joint axle passes through spacing protruding locking is in the draw-in groove.

Still further, the carousel subassembly is including pivot, carousel and be used for with the fixed connecting piece of rim, the pivot with the support rotates to be connected, the connecting piece is in be close to on the carousel rim one side edge the circumference equipartition of pivot.

Furthermore, strip-shaped holes for installing and positioning the connecting piece are uniformly distributed on the turntable, the intersection point of the central axes of the strip-shaped holes along the length direction is positioned on the rotating axis of the rotating shaft, and the installation height of the trundles and the bracket is adjustable.

Still further, the connecting piece is including barrel and square protruding, square protruding connect in the one end of barrel, the barrel is dorsad square bellied terminal surface has been seted up the trepanning, trepanning inner wall is equipped with the internal thread, square protruding dorsad the screw hole has been seted up to the terminal surface of barrel.

Still further, the support is including the first branch of vertical setting, transversely be equipped with the second branch on the first branch, set up the mounting hole on the second branch, the mounting hole is embedded be equipped with be used for with the carousel subassembly rotates the bearing of being connected, the carousel subassembly passes through the bearing with the second branch rotates to be connected.

Still further, the blade holder includes first curb plate, second curb plate, baffle and third curb plate, first curb plate be used for with support fixed connection, the laminating of second curb plate the first curb plate sets up, the baffle is used for connecting the second curb plate with the third curb plate, the second curb plate the baffle and the cooperation of third curb plate form and are used for installing the cutter the mounting groove of elastic component.

Further, a connecting sheet for installing the electric control locking piece is fixed on the tool apron.

Compared with the prior art, the tire burst device has the beneficial effects that: the bottom of the support is provided with the truckle, the turntable assembly can be fast fixed with the rim and synchronously rotate along with the wheel, the cutter pierces the tire through the driving force provided by the elastic piece to simulate the tire burst, the quick deflation can be realized, the structure is simple, meanwhile, the external control system realizes the locking and the release of the cutter through the electric control locking piece, the deflation can be performed at any time when the vehicle runs, thereby simulating the actual tire burst working condition of the vehicle and saving the simulation time.

Drawings

FIG. 1 is a reference view of a state of use of a puncture device according to an embodiment of the present invention;

FIG. 2 is an assembled schematic view of a rotary knife pack of a tire burst apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a rotary knife set of a tire burst apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an electrically controlled locking member of a tire burst device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a cutter of the tire burst device according to the embodiment of the present invention;

FIG. 6 is a schematic view of a turntable assembly of a tire burst apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a connecting member of a tire burst device according to an embodiment of the present invention.

In the figure, 1, a bracket; 11. a first strut; 12. a second strut; 13. a bearing; 2. casters; 3. a turntable assembly; 31. a rotating shaft; 32. a turntable; 321. a bar-shaped hole; 33. a connecting piece; 331. a cylinder; 332. square protrusions; 4. a rotary knife set; 41. a tool apron; 411. a first side plate; 412. a second side plate; 413. a baffle; 414. a third side plate; 42. a cutter; 421. a cutter body; 422. a hollow rotating shaft; 423. the clamping shaft; 424. a jack; 43. an elastic member; 431. a connecting rod; 432. a torsion bar; 44. an electric control locking piece; 441. a clamping groove; 442. a limit protrusion; 5. and a connecting sheet.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. in the present invention are based on the positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the description of various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.

As shown in fig. 1, a tire burst device according to a preferred embodiment of the present invention is configured to deflate a tire, so as to simulate a tire burst condition, where a in fig. 1 is a wheel, and a wheel Rao Di rotates along an axis.

The tire burst device comprises a bracket 1, wherein the bracket 1 is used as an installation carrier, and the bottom of the bracket 1 is provided with casters 2; the turntable assembly 3 is rotatably arranged on the bracket 1 and is fixedly connected with the rim, and can rotate along with the axis of the wheel synchronization Rao Di.

The rotary knife set 4 is used for puncturing a tire to deflate, referring to fig. 1, 2 and 3, and is fixedly installed on the bracket 1, and comprises a knife holder 41, a knife 42, an elastic piece 43 and an electric control locking piece 44, wherein the knife holder 41 is used for being fixedly connected with the bracket 1, the knife 42 is rotationally connected with the knife holder 41, a rotation axis of the knife 42 is perpendicular to the first axis, the elastic piece 43 is used for providing driving force when the knife 42 rotates, specifically, in the embodiment, the elastic piece 43 can be a double torsion spring, two ends of the double torsion spring are provided with connecting rods 431, the middle part of the elastic piece is provided with torsion bars 432, when the elastic piece is installed, the connecting rods 431 at two ends of the double torsion spring are fixedly connected with the knife holder 41, the torsion bars 432 in the middle of the double torsion spring are abutted against the knife 42 and have a movement trend of driving the knife 42 to rotate, the electric control locking piece 44 is connected with an external control system for releasing the knife 42 to cut the tire, and when the knife 42 is reset, the tire burst device provided by the invention is used for locking the tire burst device not only to deflate the tire, but also for generating an instant simulated tire burst effect by cutting air in the tire. The mounting mode is suitable for various road running vehicles, is convenient and quick to mount, is convenient and flexible to operate, can burst tires at any time when the vehicles run, and can adapt to the burst tire test requirements of various different scenes.

Further, referring to fig. 5, the cutter 42 includes a cutter body 421, a cutting edge and a cutter back are disposed on the cutter body 421, the cutter back can be abutted against the torsion bar 432, the cutting edge is used for puncturing the tire, for facilitating the rotation of the cutter body 421, a hollow rotating shaft 422 is disposed on the cutter body 421 and is rotationally connected with the cutter seat 41, two ends of the hollow rotating shaft 422 are respectively disposed on the double torsion springs in a penetrating manner, a screw is mounted on the cutter seat, the screw is disposed in the hollow rotating shaft 422 in a penetrating manner, and a locking nut is fixed at the end portion.

In order to facilitate the locking and releasing of the cutter 42 by the electrically controlled locking member 44, referring to fig. 4, a clamping shaft 423 is fixed on the cutter body 421, the clamping shaft 423 is used for being clamped in a clamping groove 441 of the electrically controlled locking member 44, two opposite side walls of the clamping groove 441 are symmetrically provided with a limiting protrusion 442 which is telescopic through electric control, and the clamping shaft 423 is locked in the clamping groove 441 through the limiting protrusion 442. The electric control locking piece 44 is a common electrical element, the shrinkage of the limiting protrusion 442 can be controlled by a control system, that is, when the electric control locking piece 44 locks the cutter 42, the limiting protrusion 442 stretches out to lock the clamping shaft 423 in the clamping groove 441, and when the cutter 42 needs to be released, the limiting protrusion 442 shrinks, and the clamping shaft 423 slides out from the clamping groove 441.

Furthermore, since the torsion bar 432 needs to be pushed to twist when the cutter 42 is reset, the cutter 42 is provided with the insertion hole 424, and the tool is inserted into the insertion hole 424, so that the cutter 42 is reset, and the safety accident caused by direct contact of the tester with the cutter 42 by hands is avoided.

Further, the turntable assembly 3 is fixedly connected with the wheel A, and comprises a rotating shaft 31, a turntable 32 and a connecting piece 33 used for being fixed with a rim, the rotating shaft 31 is rotationally connected with the bracket 1, and the connecting piece 33 is uniformly distributed on one side, close to the rim, of the turntable 32 along the circumferential direction of the rotating shaft 31.

Still further, in order to adapt to tire burst of wheels with the same structure and different sizes, referring to fig. 6, strip-shaped holes 321 for installing and positioning with the connecting piece 33 are uniformly distributed on the turntable 32, the intersection point of the central axis of each strip-shaped hole 321 along the length direction is located on the rotation axis of the rotation shaft 31, that is, the connecting piece 33 can slide along the length direction of the strip-shaped hole, so as to adjust the installation position of the wheels with different sizes, meanwhile, the height of the bracket 1 from the ground is also changed due to the change of the size of the wheels, in the embodiment, the installation heights of the caster 2 and the bracket 1 are adjustable, and the base plate with different thickness can be arranged between the caster 2 and the bracket 1.

Still further, referring to fig. 7, the connecting piece 33 is used for fixedly connecting with a screw on a rim, the connecting piece 33 includes a cylinder 331 and a square protrusion 332, the square protrusion 332 is connected to one end of the cylinder 331, a socket is formed on an end surface of the cylinder 331 facing away from the square protrusion 332, an internal thread is formed on an inner wall of the socket, and a threaded hole is formed on an end surface of the square protrusion facing away from the cylinder.

Still further, referring to fig. 1, the bracket 1 includes a first supporting rod 11 vertically arranged, a second supporting rod 12 horizontally arranged on the first supporting rod 11, a mounting hole formed on the second supporting rod 12, a bearing 13 for rotationally connecting with the turntable 32 assembly 3 embedded in the mounting hole, and the turntable assembly 3 rotationally connected with the second supporting rod 12 through the bearing 13. As can be seen from fig. 6, in other words, the rotating shaft 31 is inserted into the bearing 13, in order to axially limit the rotating shaft 31, a pin hole is radially formed at one end of the rotating shaft 31, which is close to the bearing 13, and a limit step is formed at the other end of the rotating shaft 31, so as to be used for mounting and limiting with the second supporting rod 12.

Still further, the tool holder 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 fixedly connected to the bracket 1, the second side plate 412 is attached to the first side plate 411, the baffle 413 is used for connecting the second side plate 412 and the third side plate 414, and referring to fig. 3, the 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. Further, a connecting piece 5 for mounting the electrically controlled locking member 44 is fixed to the tool holder 41, and in this embodiment, the connecting piece 5 is fixedly mounted on the first side plate 411.

In summary, the embodiment of the invention provides a tire burst device, the bottom of a bracket is provided with casters, a turntable assembly can be fast fixed with a rim and synchronously rotate along with the wheel, a cutter pierces a tire through driving force provided by an elastic piece to simulate tire burst, fast deflation can be realized, the structure is simple, meanwhile, an external control system can realize locking and releasing of the cutter through an electric control locking piece, and deflation can be performed at any time when a vehicle runs, so that the actual tire burst working condition of the vehicle is simulated, and the simulation time is saved.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims

1. A puncture device, comprising:

the bottom of the bracket is provided with casters;

2. A puncture device according to claim 1, wherein: the elastic piece is a double torsion spring, connecting rods at two ends of the double torsion spring are fixed with the tool apron, and a torsion bar in the middle of the double torsion spring is abutted to the cutter and has a movement tendency of driving the cutter to rotate.

3. A puncture device according to claim 2, wherein: the cutter comprises a cutter body, a hollow rotating shaft which is used for being rotationally connected with the cutter holder is arranged on the cutter body, two ends of the hollow rotating shaft are respectively penetrated on the double torsion springs, a screw is arranged on the cutter holder, and the screw is penetrated in the hollow rotating shaft and the end part of the screw is fixed with a locking nut.

4. A puncture device according to claim 3, wherein: the cutter body is fixedly provided with a clamping shaft which is used for being clamped in a clamping groove of the electric control locking piece, two opposite side walls of the clamping groove are symmetrically provided with limiting protrusions which are telescopic through electric control, and the clamping shaft is locked in the clamping groove through the limiting protrusions.

5. A puncture device according to claim 1, wherein: the turntable assembly comprises a rotating shaft, a turntable and connecting pieces, wherein the connecting pieces are used for being fixed with a rim, the rotating shaft is rotationally connected with the support, and the connecting pieces are uniformly distributed on one side, close to the rim, of the turntable along the circumferential direction of the rotating shaft.

6. A puncture device according to claim 5, wherein: the rotating disc is uniformly provided with strip-shaped holes for installing and positioning the connecting piece, the intersection point of the central axes of the strip-shaped holes along the length direction is positioned on the rotating axis of the rotating shaft, and the installation height of the trundles and the support is adjustable.

7. A puncture device according to claim 5, wherein: the connecting piece is including barrel and square protruding, square protruding connect in the one end of barrel, the barrel is dorsad square bellied terminal surface has seted up the trepanning, trepanning inner wall is equipped with the internal thread, square protruding dorsad the screw hole has been seted up to the terminal surface of barrel.

8. A puncture device according to claim 1, wherein: the support is including the first branch of vertical setting, transversely be equipped with the second branch on the first branch, the mounting hole has been seted up on the second branch, the mounting hole is embedded be used for with the carousel subassembly rotates the bearing of being connected, the carousel subassembly passes through the bearing with the second branch rotates to be connected.

9. A puncture device according to claim 1, wherein: the cutter holder comprises a first side plate, a second side plate, a baffle and a third side plate, wherein the first side plate is used for being fixedly connected with the support, the second side plate is attached to the first side plate, the baffle is used for being connected with the second side plate and the third side plate, and the second side plate, the baffle and the third side plate are matched to form a mounting groove for mounting the cutter and the elastic piece.

10. A puncture device according to claim 1, wherein: the tool apron is fixedly provided with a connecting sheet for mounting the electric control locking piece.