Tire puncture test device

Abstract

The utility model provides a tire puncture test device, which belongs to the field of tire performance test equipment and comprises a support frame. The tire fixing component is arranged on the supporting frame, and the tire fixing component can move up and down along the supporting frame; the lower pressing rod is rotatably arranged on a cross rod of the supporting frame, and the lower pressing rod can move left and right along the cross rod; and the clamping component is arranged on the lower pressing rod and used for adjusting the nailing depth and clamping the nail. The device has the characteristics that the structure is simple, the operation is convenient, the tested tire is fixed and does not deviate, and the position, angle, depth and diameter of the pricking nail can be adjusted, and the device can be used for pricking tests of tires with different specifications and sizes.

Description

Technical Field

[0001] The utility model belongs to the field of tire performance testing equipment, in particular to a tire puncture test device. Background Art

[0002] Cars inevitably experience punctures and flat tires during driving, so they generally require a spare tire. However, spare tires not only take up space inside the vehicle, impacting driver and passenger comfort and storage space, but also increase vehicle weight and reduce range. To reduce vehicle weight and increase interior space, more and more cars are adopting self-healing tires.

[0003] Self-repairing tires require a nail puncture test to ensure they maintain airtightness after a puncture. Currently, the commonly used test method involves fixing a test nail to a metal plate and then running a car over the plate to test for leaks. This method fails to simulate the air retention of a self-repairing tire after a puncture nail is removed. The testing process is cumbersome and costly. Furthermore, nails can penetrate tires at varying angles in real-world road conditions, so nail puncture testing also requires consideration of the angle.

[0004] Chinese utility model patent CN215812328U discloses an indoor test tire nailing device. Although it can be applied to PCR tires of different specifications and sizes, and can meet the requirements of nailing without being pulled out and nailing with being pulled out as well as different nailing angles, it has the following problems: the utility model fixes the tire side by means of movable support frames on the left and right sides, and fixes the tire tread by means of front bottom movable support frames and rear bottom movable support frames, but the rollers provided on the front bottom movable support frames and rear bottom movable support frames will cause the tire to rotate during the nailing test, which may easily lead to the problem of nailing failure; the nails are fixed by sliding into the slide groove of the fixing block, and will deviate during the nailing process, making it impossible to accurately control the nailing position and nailing angle, and impossible to adjust the nailing depth.

[0005] Therefore, in order to accurately and effectively perform a nail puncture test, the utility model proposes a tire puncture test device. Utility Model Content

[0006] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0007] The utility model proposes a tire puncture test device, which solves the technical problems of existing nailing tests, such as nailing failure caused by unstable fixation of the test tire, inability to accurately control the nailing position and nailing angle, and inability to adjust the nailing depth. The utility model has the characteristics of simple structure, easy operation, fixed test tire without deviation, adjustable nailing position, nailing angle, nailing depth, and nail diameter, and can be used for puncture tests of tires of different specifications and sizes.

[0008] On the one hand, the utility model discloses a tire puncture test device, comprising a support frame; a tire fixing component, which is arranged on the support frame and can move up and down along the support frame; a lower pressure rod, which is rotatably arranged on a cross bar of the support frame and can move left and right along the cross bar; and a clamping component, which is arranged on the lower pressure rod and is used to adjust the nailing depth and clamp the nail.

[0009] In some embodiments, the tire fixing component includes two fixing rods, which are symmetrically arranged at both ends of the support frame, and each fixing rod is movably arranged on an adjacent vertical rod of the support frame; a fixed shaft, which is arranged between the two fixing rods, and both ends of the fixed shaft pass through the fixing rods and are detachably connected to the fixing rods; two adapter plates, both of which are sleeved on the fixed shafts, and the adapter plates are symmetrically arranged on both sides of the rim; and a brake pad, which is arranged at one end of the fixing rod.

[0010] In some embodiments, a zigzag connection is adopted between the fixing rod and the supporting frame.

[0011] In some embodiments, the middle portion of the fixed shaft is a square structure, and the two end portions are circular structures, and the circular cross-sectional areas of the two end portions are smaller than the square cross-sectional area of ​​the middle portion.

[0012] In some embodiments, a threaded hole and a fixing groove are provided on each adapter plate. The adapter plate is fixedly connected to the fixing shaft through the threaded hole, and the adapter plate is fixedly connected to the rim through the fixing groove.

[0013] In some embodiments, the clamping component includes a sleeve disposed on the lower pressure rod; a through-hole thread disposed on the sleeve, and a paddle disposed on the through-hole thread.

[0014] In some embodiments, there are multiple sleeves, the sleeves are arranged on the lower pressure rod at intervals, and each sleeve is detachably arranged on the lower pressure rod.

[0015] In some embodiments, there are multiple through-hole threads, and each through-hole thread is detachably disposed on a corresponding sleeve.

[0016] In some embodiments, the clamping component is a three-jaw chuck, which includes a chuck body, on which a plurality of bevel gears are arranged at intervals along the circumference; a movable jaw is arranged on the chuck body in a concave and convex form; and a jaw driving mechanism is arranged inside the chuck body, the reverse side of the jaw driving mechanism is connected to the bevel gear, and the front side of the jaw driving mechanism is connected to the movable jaw.

[0017] In some embodiments, the down-pressing rod is connected to the crossbar of the support frame by a bushing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the tire fixing component of the tire puncture test device of the present invention can be moved up and down along the support frame, and tires of different specifications and sizes can be tested for nailing; the lower pressure rod can be moved left and right along the cross bar of the support frame, and cooperate with the clamping component to adjust the nailing position, nailing angle and nailing depth, and test the influence of different nailing conditions on the pressure retention of the self-repairing tire; the through-hole thread is provided on the sleeve, and the two are detachably connected, and the through-hole thread can be replaced according to actual conditions to test the influence of nails of different diameters on the pressure retention of the self-repairing tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0020] Figure 1 A schematic structural diagram of a tire puncture test device provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a fixed shaft of a tire puncture test device according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the adapter plate of the tire puncture test device according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the through-hole thread structure of the tire puncture test device according to an embodiment of the present utility model;

[0024] Figure 5 This is a structural schematic diagram of a three-jaw chuck of a tire puncture test device according to an embodiment of the present utility model;

[0025] Figure 6 A schematic diagram of the connection relationship between the adapter plate and the fixed shaft of the tire puncture test device provided by an embodiment of the present utility model;

[0026] Figure 7 A schematic diagram of the tire puncture test device provided in an embodiment of the present utility model in working state;

[0027] In the accompanying drawings: 100, support frame; 210, fixing rod, 220, fixing shaft, 230, adapter plate, 231, fixing groove, 232, threaded hole, 240, brake pad; 300, push-down rod; 410, sleeve, 420, through-hole thread, 421, paddle, 430, three-jaw chuck, 431, chuck body, 432, movable jaw, 433, jaw driving mechanism, 434, bevel gear; 500, tire and rim assembly. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "up", "down", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Terms such as "one", "a", "the" and similar words do not indicate quantity restrictions and may represent the singular or plural. The terms "include", "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions. Terms such as "connect", "connected" and the like involved in the present invention are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Multiple" involved in the present invention refers to two or more.

[0030] The embodiment of the utility model provides a tire puncture test device, which can be used for puncture tests on tires of different specifications and sizes. It has the characteristics of simple structure, easy operation, fixed test tire without deviation, and adjustable nailing position, nailing angle, nailing depth, and nail diameter. Figure 1 Schematic diagram of the structure of the tire puncture test device according to the embodiment of the present invention. Figure 1As shown, the tire puncture test device includes a support frame 100; a tire fixing component, which is arranged on the support frame 100 and can move up and down along the support frame 100; a lower pressure rod 300, which is rotatably arranged on a cross bar of the support frame 100 and can move left and right along the cross bar of the support frame 100. In a preferred embodiment, the lower pressure rod 300 is arranged on the cross bar of the support frame 100 in a sleeve manner; and a clamping component, which is arranged on the lower pressure rod 300 and is used to adjust the nailing depth and clamp the nail.

[0031] refer to Figure 1-Figure 3 As shown, the tire fixing component of the tire puncture test device of the present invention embodiment includes two fixing rods 210, which are symmetrically arranged at both ends of the support frame 100, and each fixing rod 210 is movably arranged on the adjacent vertical rods of the support frame 100. The fixing rod 210 can be moved up and down along the support frame 100 according to the test tires of different specifications and sizes to meet the puncture test of tires of different specifications and sizes, and the angle at which the nail penetrates the tire can be adjusted. The fixing rod 210 is connected to the support frame 100 through a zigzag shape, and the fixing rod 210 can also be set on the support frame 100 by hydraulic or electric drive; a fixing shaft 220 is arranged across the two fixing rods 210 for fixing the combination of the tire and the rim, and the fixing shaft 220 is detachably connected to the fixing rod 210. A cylinder matching the through hole of the fixing rod 210 is provided at both ends of the fixing shaft 220, and the fixing shaft 220 and the fixing rod 210 are connected through the through hole provided on the fixing rod 210. The fixing shaft 220 is connected in a row to ensure that the fixing shaft 220 remains fixed on the fixing rod 210; the middle part of the fixing shaft 220 is a square structure, and the two end parts are circular structures, and the circular cross-sectional area at the two ends is smaller than the middle square cross-sectional area, so as to ensure that the adapter plate 230 can be removed from the fixing shaft 220; by setting the middle part as a square structure, it can be ensured that the fixing shaft 220 and the adapter plate 230 are connected in a band-shaped connection, thereby preventing the fixing shaft 220 and the adapter plate 230 from slipping. By setting the two end parts as circular structures, it is convenient to rotate the tire to different positions during the nail puncture test to realize the nail puncture test at different positions of the tire; the two adapter plates 230 are both sleeved on the fixing shaft 220, and each adapter plate 230 is fixedly connected to the fixing shaft 220 through a threaded hole 232 set thereon. The adapter plate 230 is installed on both sides of the rim and is fixedly connected to the rim through a fixing groove 231 set on the adapter plate 230; the brake pad 240 is set at one end of the fixing rod.

[0032] refer to Figure 1 and Figure 4As shown, the clamping component of the tire puncture test device according to the present embodiment includes a sleeve 410, which is mounted on the lower pressure rod 300; a through-hole thread 420, which is mounted on the sleeve 410. A paddle 421 is mounted on the through-hole thread 420 and is mounted on the upper nut of the through-hole thread 420. One end of the paddle 421 is fixed to the upper nut of the through-hole thread 420 by welding or threaded connection, and the other end is located in the through-hole of the through-hole thread 420. Preferably, the paddle 421 is a steel spring and is used to secure the test nail to prevent it from slipping out of the through-hole of the through-hole thread 420. When performing a nailing test without removing the nail, the nail can lift the paddle 421 and deform it, thereby securing the nail during the nailing process and preventing it from slipping and falling. In a preferred embodiment, there are multiple sleeves 410, and the sleeves 410 are arranged at intervals on the lower pressure rod 300, and each sleeve 410 is detachably arranged on the lower pressure rod 300; there are multiple through-hole threads 420, and each through-hole thread 420 is detachably arranged on the corresponding sleeve 410.

[0033] refer to Figure 5 As shown, the clamping component of the tire puncture test device according to the present invention can also be another clamping component, such as a three-jaw chuck 430, for clamping or releasing a nail. The three-jaw chuck 430 can adjust the length of the nail inserted. The three-jaw chuck 430 consists of a chuck body 431, a movable jaw 432, and a jaw drive mechanism 433. The chuck body 431 is mounted with three bevel gears 434, each of which is connected to the back of the jaw drive mechanism 433. The jaw drive mechanism 433 is mounted inside the chuck body 431 and is a circular disc with threads on the front and a bevel gear on the back. The movable jaw 432 is mounted to the chuck body 431 via a concave-convex structure. The front of the jaw drive mechanism 433 is connected to the three movable jaws 432 through the chuck body 431. When the three bevel gears 434 are rotated, the bevel gears 434 will drive the reverse side of the claw driving mechanism 433 to rotate, and then the front side of the claw driving mechanism 433 will drive the three movable claws 432 mounted on the chuck body 431 to make reciprocating motion along the radius on the chuck body 431 to achieve clamping or loosening; a hexagonal countersunk hole is provided on the outside of the bevel gear 434. When a nail needs to be installed for a nailing test, a hexagonal tool is used to transfer the bevel gear to drive the chuck body to rotate, thereby driving the movable claws to clamp or loosen, thereby achieving the clamping or loosening of the nail.

[0034] refer to Figure 6 and Figure 7 As shown, the specific method of using the tire puncture test device of the utility model is as follows:

[0035] Adjust the fixing rod 210 to a suitable position according to the specifications of the tire to be tested, sleeve one adapter plate 230 on the fixed shaft 220, and then sleeve the assembled tire and rim assembly 500 on the fixed shaft 220, and then sleeve the other adapter plate 230 on the fixed shaft 220 so that the two adapter plates 230 are respectively located on both sides of the tire and rim assembly 500, use a threaded sleeve and a nut to fix the adapter plate 230 and the tire and rim assembly 500 through the fixing groove 231 provided on the adapter plate 230, and use a screw to fix the adapter plate 230 and the fixed shaft 220 through the threaded hole 232 provided on the adapter plate 230; install the above-mentioned fixed shaft 220 on the fixing rod 210; adjust the position of the lower pressure rod 300 on the support frame 100 to ensure that the nails can be inserted into different tread blocks or grooves of the tire tread; match the appropriate through-hole thread according to the diameter of the nails;

[0036] When performing the nail insertion and nail removal test, retain the nail head to ensure that the nail can be smoothly pulled out of the tire after lifting the lower pressure rod 300 after nail insertion. Pass the nail through the through hole from the upper part of the through hole thread 420, use the pick 421 to fix the nail, and then install the through hole thread 420 on the sleeve 410. Adjust the penetration depth of the nail by adjusting the depth of the through hole thread 420 rotating into the sleeve 410. Press the lower pressure rod 300 to penetrate the nail into the tire, and then lift the lower pressure rod 300 to pull out the nail. Then press the brake pad 240, rotate the tire to another position where nailing is required, and then press the brake pad 240 to fix the tire for nailing tests at other positions.

[0037] When performing a nail puncture test without removing the nail, first remove the nail head to ensure that the nail can completely pass through the through-hole thread 420 as a whole, then pass the nail through the through-hole from the upper part of the through-hole thread 420, use the pick 421 to fix the nail, and then install the through-hole thread 420 on the sleeve 410. Adjust the penetration depth of the nail by adjusting the depth of the through-hole thread 420 rotating into the sleeve 410, press the down-pressing rod 300 to penetrate the nail into the tire, press the pick 421 to lift the down-pressing rod 300, and the nail remains on the tire. Then press the brake pad 240, rotate the tire to another position where nailing is required, and then press the brake pad 240 to fix the tire for nailing tests at other positions.

[0038] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A tire puncture test device, characterized by: include Support frame; A tire fixing component is provided on the support frame and can move up and down along the support frame; The lower pressure rod is rotatably arranged on a cross bar of the support frame, and the lower pressure rod can move left and right along the cross bar; The clamping component is arranged on the lower pressure rod and is used to adjust the nailing depth and clamp the nail.

2. The tire puncture test device according to claim 1, characterized in that: Tire fixing components include Two fixing rods are symmetrically arranged at both ends of the support frame, and each fixing rod is movably arranged on an adjacent vertical rod of the support frame; A fixed shaft is provided between the two fixed rods, with both ends of the fixed shaft passing through the fixed rods and being detachably connected to the fixed rods; Two adapter plates are both sleeved on the fixed shaft, and the adapter plates are symmetrically arranged on both sides of the rim; The brake pad is arranged on one end of the fixed rod.

3. The tire puncture test device according to claim 2, characterized in that: The fixing rod and the supporting frame are connected in a zigzag shape.

4. The tire puncture test device according to claim 2, characterized in that: The middle part of the fixed shaft is a square structure, and the two end parts are circular structures.

5. The tire puncture test device according to claim 2, characterized in that: A threaded hole and a fixing groove are provided on each adapter plate. The adapter plate is fixedly connected to the fixing shaft through the threaded hole, and the adapter plate is fixedly connected to the rim through the fixing groove.

6. The tire puncture test device according to claim 1, characterized in that: Clamping parts include A sleeve is provided on the lower pressure rod; A through hole thread is provided on the sleeve, and a pick is provided on the through hole thread.

7. The tire puncture test device according to claim 6, characterized in that: There are multiple sleeves, which are arranged on the lower pressing rod at intervals, and each sleeve is detachably arranged on the lower pressing rod.

8. The tire puncture test device according to claim 7, characterized in that: There are multiple through-hole threads, and each through-hole thread is detachably arranged on a corresponding sleeve.

9. The tire puncture test device according to claim 1, characterized in that: The clamping part is a three-jaw chuck, which includes A chuck body, wherein a plurality of bevel gears are arranged at intervals along the circumference of the chuck body; The movable claws are arranged on the chuck body in a concave and convex form. The claw driving mechanism is arranged inside the chuck body, the back side of the claw driving mechanism is connected to the bevel gear, and the front side of the claw driving mechanism is connected to the movable claw.

10. The tire puncture test device according to claim 1, characterized in that: The lower pressure rod is connected to the cross bar of the supporting frame by a shaft sleeve.

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