A puncture tool and puncture method for automobile tire

Abstract

The present invention relates to the technical field of automobile test equipment, and discloses a puncture tool and puncture method for automobile tires, the puncture tool comprising: a first mounting seat, a second mounting seat and a plurality of guide pillars; the puncture mechanism is arranged on the first mounting seat and is located between the first mounting seat and the second mounting seat, and comprises a driving assembly and a puncture needle, and the driving assembly can drive the puncture needle to move up and down; wherein, the puncture needle is provided with a heating element for heating the puncture needle, and the bottom of the puncture needle has a cone head, and the cross-sectional area of ​​the cone head gradually decreases from top to bottom; the joint is sleeved on the puncture needle, the bottom of the joint is provided with a threaded tube, the threaded tube is provided with an external thread, the inner wall of the protective cover is provided with an internal thread, and the internal thread is threadedly connected with the external thread; the lower end of the cone head extends from the lower end of the joint and the protective cover in turn. The advantages of the present invention are that the puncture tool can prevent the steel wire inside the automobile tire from being pulled or twisted off, ensure that the strength of the automobile tire is not too weakened, and is convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of automobile testing devices, and in particular to a puncture tool and a puncture method for automobile tires. Background Art

[0002] It is often necessary to simulate a car tire blowout to restore the real scene of a car tire blowout and ensure the accuracy of the test results.

[0003] For example, the patent "CN112014124B" discloses a test device and a test method for simulating tire explosion, in which a plurality of holes are opened along the circumference of the automobile tire, a joint is arranged in the hole, the inner end of the joint is connected to the inner tube, and the outer end of the joint is connected to the cylinder body through an air pipe. During the test, the cover is driven to open from the cylinder body, and the gas in the tire is discharged simultaneously through multiple air pipes, simulating the scene when the car tire explodes. Therefore, it is necessary to first drill a plurality of holes in the circumference of the outer tube of the automobile tire, and then install a joint in each hole to facilitate the connection between the inner tube and the cylinder body.

[0004] Generally, the outer tyre of a car tire is densely covered with many steel wires to ensure that it has sufficient strength. According to the existing hole-opening method, the steel wires in the outer tyre will be cut or twisted, and the main structure of the outer tyre will be damaged, resulting in a significant reduction in the strength of the car tire, affecting the accuracy of the test results. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a puncture tool and a puncture method for automobile tires which can avoid cutting or twisting the steel wire inside the tire and is easy to operate manually.

[0006] The technical solution adopted by the present invention to solve the technical problem is to provide a puncture tool for automobile tires, comprising:

[0007] A first mounting seat, a second mounting seat and a plurality of guide pillars, wherein the first mounting seat is located above the second mounting seat, and the plurality of guide pillars are arranged between the first mounting seat and the second mounting seat;

[0008] The piercing mechanism is arranged on the first mounting seat and between the first mounting seat and the second mounting seat, and comprises a driving assembly and a pricking needle arranged in sequence from top to bottom, wherein the driving assembly can drive the pricking needle to move up and down; wherein the pricking needle is provided with a heating element for heating the pricking needle, and the bottom of the pricking needle has a cone head, and the cross-sectional area of ​​the cone head gradually decreases from top to bottom;

[0009] A joint and a protective cover, wherein the joint is sleeved on the puncture needle, a threaded tube is provided at the bottom of the joint, an external thread is provided on the threaded tube, an internal thread is provided on the inner wall of the protective cover, and the internal thread is threadably connected with the external thread; the lower end of the cone head extends out from the lower ends of the joint and the protective cover in turn.

[0010] Furthermore, the protective cover includes a cylindrical sleeve and a conical sleeve, the internal thread is arranged on the cylindrical sleeve, the cross-sectional area of ​​the conical sleeve gradually decreases from top to bottom, the conical sleeve is arranged on the cone head, and the cone head passes through the bottom of the conical sleeve.

[0011] Furthermore, two planes for clamping a wrench are symmetrically arranged along the circumference of the cylindrical sleeve.

[0012] Furthermore, a circle of inclined surface is provided at the bottom of the conical sleeve, the bottom end of the inclined surface is attached to the cone head, and the top end of the inclined surface is connected to the outer cone surface of the conical sleeve.

[0013] Furthermore, the driving assembly includes an upper mounting plate, a lower mounting plate, a connecting rod group and an adjusting screw, wherein the upper mounting plate is fixedly connected to the first mounting seat, the needle is connected to the lower mounting plate, the connecting rod group is connected between the upper mounting plate and the lower mounting plate, and can drive the lower mounting plate and the upper mounting plate to move closer to or away from each other, and the adjusting screw is movably arranged on the connecting rod group for driving the connecting rod group.

[0014] Further, the connecting rod group includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first hinge seat and a second hinge seat;

[0015] One end of the first connecting rod and the second connecting rod is hinged on the first hinge seat, and the other end of the first connecting rod and the second connecting rod is hinged on the upper mounting plate and the lower mounting plate respectively; one end of the third connecting rod and the fourth connecting rod is hinged on the second hinge seat, and the other end of the third connecting rod and the fourth connecting rod is hinged on the upper mounting plate and the lower mounting plate respectively; one end of the adjusting screw is rotatably arranged in the first hinge seat, and the second hinge seat is provided with a nut, and the other end of the screw is inserted into the nut.

[0016] Furthermore, a rotating handle is provided at one end of the adjusting screw close to the nut.

[0017] Furthermore, the needle has a polygonal outer wall, the cone head is connected to the bottom of the polygonal outer wall, and the joint is provided with a polygonal inner wall, and the inner wall is in contact with the outer wall.

[0018] Furthermore, it also includes a base, which is arranged at the bottom of the plurality of guide pillars and is fixedly connected to at least one of the guide pillars;

[0019] The first mounting seat and the second mounting seat are both movably arranged on the guide column, and the first mounting seat and the second mounting seat are detachably locked on the guide column by a locking screw respectively.

[0020] The technical solution adopted by the present invention to solve the technical problem is to provide a method for puncturing a car tire, using the above-mentioned car tire puncturing tool, and the puncturing method comprises:

[0021] Placing the automobile tire on the second mounting seat and allowing the heating element to heat the needle;

[0022] The driving assembly drives the puncture needle to move downward, so that the puncture needle heated by the heating element punctures the automobile tire and forms a puncture hole on the automobile tire;

[0023] The threaded tube on the protective cover and the connector is inserted into the piercing hole;

[0024] The protective cover is removed from the threaded tube and is threadedly connected to the threaded tube with a fixing nut to fix the connector to the automobile tire;

[0025] The driving assembly drives the needle to move upward, and the needle is disengaged from the connector.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] In the present invention, a heating element is arranged inside the puncture needle for heating the puncture needle; a cone head is arranged at the bottom of the puncture needle, a joint is sleeved on the puncture needle, and the external thread on the joint is covered by a protective cover to prevent the steel wire in the automobile tire from being pulled; the test personnel can control the lifting and lowering movement of the puncture needle by shaking and turning the handle, and when the puncture needle moves downward to puncture the automobile tire, the heated puncture needle melts the rubber on the surface of the automobile tire, and the cone head squeezes the steel wire inside the automobile tire to both sides of the puncture needle to prevent the steel wire from being cut or twisted. After the needle pierces the car tire, the connector needs to be inserted into the puncture hole on the car tire. The external thread on the connector is also easy to break the steel wire inside the car tire during the insertion process. In this solution, a protective cover is threadedly connected to the threaded tube on the connector. The bottom of the protective cover is a conical sleeve and the top is a cylindrical sleeve. When the needle continues to move downward, the conical sleeve can also squeeze the steel wire in the car tire to both sides of the conical sleeve to prevent the steel wire from being pulled and broken or twisted, thereby ensuring that the main structure of the car tire is not damaged and the strength is not too weakened, thereby ensuring the test accuracy. After the connector is inserted into the puncture hole on the car tire, the protective cover is unscrewed from the threaded tube and threadedly connected to the threaded tube through a nut to fix the connector on the car tire. Multiple connectors can be installed on the car tire in this cycle, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure after the joint and nut are installed on the car tire;

[0029] Figure 2 for Figure 1 A half-section diagram of

[0030] Figure 3 It is a schematic diagram of the structure of the piercing tool of the present invention when piercing a car tire;

[0031] Figure 4 It is a schematic diagram of the structure of the piercing tool of the present invention;

[0032] Figure 5 It is a schematic diagram of the assembly of the piercing mechanism, the connector and the protective cover;

[0033] Figure 6 A half-section schematic diagram of a needle, a heating element, a connector and a protective cover;

[0034] Figure 7 Exploded view of the needle, heating element, connector and cover.

[0035] In the figure:

[0036] 1. The first mounting seat;

[0037] 2. Second mounting seat;

[0038] 3. Guide column;

[0039] 4. Piercing mechanism; 40. Driving assembly; 41. Piercing needle; 42. Heating element; 401. Upper mounting plate; 402. Lower mounting plate; 403. Adjusting screw; 404. First connecting rod; 405. Second connecting rod; 406. Third connecting rod; 407. Fourth connecting rod; 408. First hinge seat; 409. Second hinge seat; 411. Cone head; 412. Outer wall;

[0040] 5. Joint; 50. Threaded pipe; 51. Inner wall;

[0041] 6. Protective cover; 60. Cylindrical sleeve; 601. Internal thread; 602. Plane; 61. Conical sleeve; 611. Inclined surface;

[0042] 7. Base;

[0043] 8. Locking screw;

[0044] 9. Automobile tire; 90. Nut. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0046] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Embodiment 1:

[0051] like Figure 3-Figure 7 As shown, a puncture tool for a car tire 9 includes: a first mounting seat 1, a second mounting seat 2, a plurality of guide pillars 3, a puncture mechanism 4, a joint 5, a protective cover 6, a base 7 and a locking screw 8.

[0052] The first mounting seat 1, the second mounting seat 2 and a plurality of guide posts 3, wherein the first mounting seat 1 is located above the second mounting seat 2, and a plurality of guide posts 3 are arranged between the first mounting seat 1 and the second mounting seat 2. The device further comprises a base 7 arranged below the second mounting seat 2, the base 7 being arranged at the bottom of a plurality of guide posts 3 and being fixedly connected to at least one guide post 3; the guide posts 3 comprise at least two to ensure the accurate positions of the first mounting seat 1, the second mounting seat 2 and the base 7. The base 7 can be threadedly connected to the guide posts 3, the first mounting seat 1 and the second mounting seat 2 can both be lifted and lowered on the guide posts 3, and the first mounting seat 1 and the second mounting seat 2 are detachably locked on the guide posts 3 by a locking screw 8 respectively.

[0053] During use, when the relative position of the first mounting seat 1 or the second mounting seat 2 needs to be adjusted, the locking screw 8 thereon can be screwed, and after the position is adjusted, the locking screw 8 can be tightened, and the first mounting seat 1 or the second mounting seat 2 is locked at the specified height on the guide column 3. The automobile tire 9 is supported on the second mounting seat 2, and can be supported on the workbench through the second mounting seat 2; in addition, it can also be supported on the workbench through the base 7; it can also be clamped on the workbench through the second mounting seat 2 and the base 7, which is convenient for fixing to facilitate the operation of the tester.

[0054] The piercing mechanism 4 is arranged on the first mounting seat 1 and is located between the first mounting seat 1 and the second mounting seat 2, and includes a driving assembly 40 and a needle 41 arranged in sequence from top to bottom, and the driving assembly 40 can drive the needle 41 to move up and down; wherein, the needle 41 is provided with a heating element 42 for heating the needle 41, and the heating element 42 is preferably but not limited to a heating rod, and a wire is provided on the heating rod, and a receiving cavity is provided in the needle 41, and a through hole connected to the receiving cavity is opened on the side of the needle 41, and the heating rod is arranged in the receiving cavity, and the wire of the heating rod extends from the through hole to facilitate wiring. The bottom of the needle 41 has a cone head 411, and the cross-sectional area of ​​the cone head 411 gradually decreases from top to bottom, that is, the cone tip is at the bottom; the needle 41 has a polygonal outer wall 412, and the cone head 411 is connected to the bottom of the polygonal outer wall 412. The joint 5 is provided with a polygonal inner wall 51, and the inner wall 51 is in contact with the outer wall 412. The needle 41 has a limiting portion, and the joint 5 movably abuts against the limiting portion. When the needle 41 moves downward, the limiting portion pushes the joint 5, so that the joint 5 moves downward.

[0055] In actual use, the outer wall 412 of the needle 41 and the inner wall 51 of the connector 5 can be simultaneously configured to be a hexagonal prism, an octagonal prism, a dodecagonal prism, etc., so that when the nut 90 is subsequently tightened on the threaded tube 50 of the connector 5, the connector 5 can be prevented from rotating relative to the needle 41.

[0056] Specifically, the driving assembly 40 includes an upper mounting plate 401, a lower mounting plate 402, a connecting rod group and an adjusting screw 403. The upper mounting plate 401 is fixedly connected to the first mounting seat 1, and the needle 41 is connected to the lower mounting plate 402, and can be detachably fixedly connected. The connecting rod group is connected between the upper mounting plate 401 and the lower mounting plate 402, and can drive the lower mounting plate 402 and the upper mounting plate 401 to move closer to or away from each other. The adjusting screw 403 is movably arranged on the connecting rod group for driving the connecting rod group. Among them, the connecting rod group includes a first connecting rod 404, a second connecting rod 405, a third connecting rod 406, a fourth connecting rod 407, a first hinge seat 408 and a second hinge seat 409; one end of the first connecting rod 404 and the second connecting rod 405 are hinged on the first hinge seat 408, and the first hinge seat 408 has a pin shaft (not marked in the figure), through which the first connecting rod 404 and the second connecting rod 405 are hinged, and the other ends of the first connecting rod 404 and the second connecting rod 405 are respectively hinged on the upper mounting plate 401 and the lower mounting plate 402. One end of the third link 406 and the fourth link 407 are hinged on the second hinge seat 409. Similarly, a pin is also provided on the second hinge seat 409, through which the third link 406 and the fourth link 407 are hinged. The other ends of the third link 406 and the fourth link 407 are hinged on the upper mounting plate 401 and the lower mounting plate 402 respectively. When the first link 404 and the second link 405 are straightened, and the third link 406 and the fourth link 407 are straightened, the lower mounting plate 402 moves downward, so that the needle 41 moves downward; when the first link 404 and the second link 405 are bent, and the third link 406 and the fourth link 407 are bent, the lower mounting plate 402 rises, so that the needle 41 moves upward and can be pulled out from the joint 5.

[0057] One end of the adjusting screw 403 is rotatably arranged in the first hinge seat 408, and a nut 90 is provided on the second hinge seat 409. The other end of the screw is inserted into the nut 90. The screw and the nut 90 form a screw nut 90 structure. By rotating the screw, the nut 90 can be driven, thereby causing the third connecting rod 406 and the fourth connecting rod 407 to move relative to each other, and the first connecting rod 404 and the second connecting rod 405 also move relative to each other, and the lower mounting plate 402 can achieve lifting and lowering movement. That is, the rise and fall of the needle 41 can be achieved by rotating the screw, and whether it is rising or falling can be achieved by controlling the screw to rotate clockwise or counterclockwise. A rotating handle is provided at one end of the adjusting screw 403 close to the nut 90. The rotating handle is mainly for the convenience of rotating the screw. The handle can increase the torque and save the force required for rotating the screw.

[0058] like Figure 6-Figure 7 As shown, the connector 5 is sleeved on the puncture needle 41, a threaded tube 50 is provided at the bottom of the connector 5, an external thread is provided on the threaded tube 50, an internal thread 601 is provided on the inner wall 51 of the protective cover 6, and the internal thread 601 is threadedly connected with the external thread. After the puncture needle 41 pierces the automobile tire 9, the connector 5 needs to be inserted into the puncture hole on the automobile tire 9, and the external thread on the connector 5 is also easy to break the steel wire inside the automobile tire 9 during the insertion process. In this solution, a protective cover 6 is threadedly connected to the threaded tube 50 on the connector 5, and the protective cover 6 shields the external thread on the threaded tube 50 to ensure that the steel wire in the automobile tire 9 will not be broken.

[0059] The protective cover 6 includes a cylindrical sleeve 60 and a conical sleeve 61. The internal thread 601 is arranged on the cylindrical sleeve 60. The cross-sectional area of ​​the conical sleeve 61 gradually decreases from top to bottom. The conical sleeve 61 is sleeved on the cone head 411, and the cone head 411 passes through the bottom of the conical sleeve 61. The bottom of the protective cover 6 is the conical sleeve 61, and the top is the cylindrical sleeve 60. When the puncture needle 41 continues to move downward, the conical sleeve 61 can also squeeze the steel wire in the automobile tire 9 to both sides of the conical sleeve 61 to prevent the steel wire from being pulled and broken or twisted, thereby ensuring that the main structure of the automobile tire 9 is not damaged and the strength is not too weakened, thereby ensuring the test accuracy. The lower end of the cone head 411 extends from the lower end of the joint 5 and the protective cover 6 in turn, so as to facilitate the puncture of the automobile tire 9. Two flat surfaces 602 for a wrench to engage are symmetrically provided along the circumference of the cylindrical sleeve 60. After the connector 5 is inserted into the puncture hole on the automobile tire 9, the protective cover 6 is unscrewed from the threaded tube 50 by a wrench and is threadedly connected to the threaded tube 50 through a nut 90 to fix the connector 5 on the automobile tire 9. Multiple connectors 5 can be installed on the automobile tire 9 in this cycle, which is convenient to use.

[0060] Preferably, a circle of inclined surface 611 is provided at the bottom of the conical sleeve 61, the bottom end of the inclined surface 611 is attached to the cone head 411, and the top end of the inclined surface 611 is connected to the outer cone surface of the conical sleeve 61. The circle of inclined surface 611 realizes a smooth transition between the protective cover 6 and the puncture needle 41, which can prevent the protective cover 6 from pulling the steel wire in the automobile tire 9 when the puncture needle 41 is pressed down.

[0061] In actual use, the present invention provides a heating element 42 inside the thorn needle 41 for heating the thorn needle 41; a cone head 411 is provided at the bottom of the thorn needle 41, the connector 5 is sleeved on the thorn needle 41, and the external thread on the connector 5 is covered by the protective cover 6 to prevent the steel wire in the automobile tire 9 from being pulled; the test personnel can control the lifting and lowering movement of the thorn needle 41 by shaking and turning the handle, and when the thorn needle 41 moves downward to pierce the automobile tire 9, the heated thorn needle 41 melts the rubber on the surface of the automobile tire 9, and the cone head 411 squeezes the steel wire inside the automobile tire 9 to both sides of the thorn needle 41 to prevent the steel wire from being cut or twisted.

[0062] Embodiment 2:

[0063] like Figure 1-Figure 3 As shown, a method for puncturing a car tire 9 is provided, using the puncturing tool for the car tire 9 in the first embodiment. The puncturing method can be understood as the working principle of the puncturing tool, and the puncturing method includes:

[0064] First, adjust the first mounting seat 1 and the second mounting seat 2 to the appropriate position on the guide column 3 to facilitate the subsequent piercing work, and lock the first mounting seat 1 and the second mounting seat 2 on the guide column 3 by two locking screws 8 to prevent them from moving up and down.

[0065] Afterwards, the automobile tire 9 is placed on the second mounting seat 2, and the heating element 42 heats the puncture needle 41. The temperature of the puncture needle 41 needs to be able to melt the rubber on the automobile tire 9 before the downward puncture action can be performed.

[0066] Afterwards, the driving assembly 40 drives the puncture needle 41 to move downward, so that the puncture needle 41 heated by the heating element 42 punctures the automobile tire 9 and forms a puncture hole on the automobile tire 9. Specifically, the tester rotates the handle to rotate the lead screw, and the lead screw cooperates with the nut 90 to gradually straighten the third connecting rod 406 and the fourth connecting rod 407, and the first connecting rod 404 and the second connecting rod 405, and the lower mounting plate 402 moves downward, thereby driving the puncture needle 41 to move downward and puncture the automobile tire 9.

[0067] Afterwards, the threaded tube 50 on the protective cover 6 and the connector 5 penetrates into the puncture hole, and the limiting ring on the connector 5 abuts against the automobile tire 9, and then no longer moves downward, and the connector 5 has been installed in place.

[0068] Afterwards, the protective cover 6 is removed from the threaded tube 50 by clamping the two flat surfaces 602 of the protective cover 6 with a wrench, and is threadedly connected to the threaded tube 50 with a fixing nut 90. The limiting ring and nut 90 on the connector 5 are clamped on the automobile tire 9 to fix the connector 5 on the automobile tire 9.

[0069] Finally, the driving assembly 40 drives the needle 41 to move upward, that is, rotates the screw in the opposite direction, so that the first connecting rod 404 and the second connecting rod 405, and the third connecting rod 406 and the fourth connecting rod 407 gradually bend, the lower mounting plate 402 moves upward, and the needle 41 disengages from the connector 5.

[0070] The next joint 5 can then be installed.

[0071] In this solution, the piercing tool can prevent the steel wire inside the automobile tire 9 from being pulled or twisted, ensuring that the strength of the automobile tire 9 is not too weakened, and is convenient to operate.

Claims

1. A puncture tool for automobile tires, characterized in that: include: A first mounting seat, a second mounting seat and a plurality of guide pillars, wherein the first mounting seat is located above the second mounting seat, and the plurality of guide pillars are arranged between the first mounting seat and the second mounting seat; The piercing mechanism is arranged on the first mounting seat and between the first mounting seat and the second mounting seat, and comprises a driving assembly and a pricking needle arranged in sequence from top to bottom, wherein the driving assembly can drive the pricking needle to move up and down; wherein the pricking needle is provided with a heating element for heating the pricking needle, and the bottom of the pricking needle has a cone head, and the cross-sectional area of ​​the cone head gradually decreases from top to bottom; A connector and a protective cover, wherein the connector is sleeved on the puncture needle, a threaded tube is provided at the bottom of the connector, an external thread is provided on the threaded tube, an internal thread is provided on the inner wall of the protective cover, and the internal thread is threadedly connected with the external thread; the lower end of the cone head extends out from the lower ends of the connector and the protective cover in sequence; in: The protective cover comprises a cylindrical sleeve and a conical sleeve, the internal thread is arranged on the cylindrical sleeve, the cross-sectional area of ​​the conical sleeve gradually decreases from top to bottom, the conical sleeve is arranged on the conical head, and the conical head passes through the bottom of the conical sleeve; The bottom of the conical sleeve is provided with a circle of inclined surface, the bottom end of the inclined surface is attached to the cone head, and the top end of the inclined surface is connected to the outer cone surface of the conical sleeve; The needle has a polygonal outer wall, the cone head is connected to the bottom of the polygonal outer wall, and the joint is provided with a polygonal inner wall, which is in contact with the outer wall.

2. The automobile tire puncture tool according to claim 1, characterized in that: Two planes for clamping a wrench are symmetrically arranged along the circumference of the cylindrical sleeve.

3. The automobile tire puncture tool according to claim 1, characterized in that: The driving assembly includes an upper mounting plate, a lower mounting plate, a connecting rod group and an adjusting screw, wherein the upper mounting plate is fixedly connected to the first mounting seat, the needle is connected to the lower mounting plate, the connecting rod group is connected between the upper mounting plate and the lower mounting plate, and can drive the lower mounting plate and the upper mounting plate to move closer to or away from each other, and the adjusting screw is movably arranged on the connecting rod group for driving the connecting rod group.

4. The automobile tire puncture tool according to claim 3, characterized in that: The connecting rod group includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first hinge seat and a second hinge seat; One end of the first connecting rod and the second connecting rod is hinged on the first hinge seat, and the other end of the first connecting rod and the second connecting rod is hinged on the upper mounting plate and the lower mounting plate respectively; one end of the third connecting rod and the fourth connecting rod is hinged on the second hinge seat, and the other end of the third connecting rod and the fourth connecting rod is hinged on the upper mounting plate and the lower mounting plate respectively; one end of the adjusting screw is rotatably arranged in the first hinge seat, and the second hinge seat is provided with a nut, and the other end of the screw is inserted into the nut.

5. The automobile tire puncture tool according to claim 4, characterized in that: A rotating handle is provided at one end of the adjusting screw close to the nut.

6. The automobile tire puncture tool according to claim 1, characterized in that: It also includes a base, which is arranged at the bottom of the plurality of guide pillars and is fixedly connected to at least one of the guide pillars; The first mounting seat and the second mounting seat are both movably arranged on the guide column, and the first mounting seat and the second mounting seat are detachably locked on the guide column by a locking screw respectively.

7. A method for puncturing a car tire, using the car tire puncturing tool as claimed in any one of claims 1 to 6, characterized in that: The piercing method comprises: Placing the automobile tire on the second mounting seat and allowing the heating element to heat the needle; The driving assembly drives the puncture needle to move downward, so that the puncture needle heated by the heating element punctures the automobile tire and forms a puncture hole on the automobile tire; The threaded tube on the protective cover and the connector is inserted into the piercing hole; The protective cover is removed from the threaded tube, and a fixing nut is threadedly connected to the threaded tube to fix the joint on the automobile tire; The driving assembly drives the needle to move upward, and the needle is disengaged from the connector.

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