Tire puncture resistance detection device and use method thereof

Abstract

The invention relates to the technical field of tire detection, in particular to a tire puncture resistance detection device and a use method thereof. The tire puncture resistance detection device comprises a portal frame, a tire mounting mechanism, a puncture mechanism and a driving mechanism for driving the puncture mechanism to move up and down are arranged on the portal frame from bottom to top, the puncture mechanism comprises a needle head and a closed needle cylinder, and a central air hole communicated with the needle cylinder is axially formed in the needle head. A rotating ring is rotationally arranged on the outer side wall of the needle cylinder, a plurality of rectangular blades deviating from the axis of the needle cylinder are arranged on the circumference of the outer side wall of the rotating ring at equal intervals, an annular groove communicated with the needle cylinder in a sealed mode is formed in the inner side wall of the rotating ring, and exhaust holes communicated with the annular groove are horizontally formed in the blades. The puncture resistance of the tire can be rapidly judged, the tire is easy to install, and the service life of equipment is long.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire detection, in particular to a tire puncture resistance performance detection device and a use method thereof. BACKGROUND

[0002] Tires are prone to be punctured when encountering sharp objects during driving, which affects the driving safety of vehicles, so it is necessary to detect the puncture resistance performance of tires. The patent for invention with the authorization announcement number CN118883103B discloses a kind of automobile tire anti-puncture performance detection system, including detection table, detection table is equipped with installation assembly, installation assembly is hung on automobile tire by screw rod and threaded sleeve, detection table is equipped with support structure, the free end of screw rod is supported by support frame, installation assembly is equipped with puncture assembly above, detection table is equipped with lifting assembly, lifting assembly is lifted on automobile tire by jack. The invention solves the technical problem that the automobile tire anti-puncture detection device cannot adapt to different specifications and sizes of automobile tires, and the automobile tires need to be lifted by special personnel with additional equipment during detection. However, there are the following problems: first, it is not easy to judge whether the puncture assembly has penetrated into the tire interior, which affects the evaluation of the tire puncture resistance performance; second, the tire installation and fixation are relatively complex, and the tire is separated from the ground after installation, relying on the screw rod for support, the self-weight of the tire is easy to cause deformation of the screw rod, affecting the service life of the equipment.

[0003] In view of the above, it is urgent to provide a tire puncture resistance performance detection device that can quickly judge the puncture resistance performance of the tire, and the tire installation is simple and the service life is long. SUMMARY

[0004] To solve at least one of the above technical problems, the present application provides a tire puncture resistance performance detection device, which comprises a gantry, a tire mounting mechanism, a puncture mechanism and a driving mechanism for driving the puncture mechanism to move up and down are arranged on the gantry from bottom to top, the puncture mechanism comprises a needle and a sealed needle cylinder, the needle is axially provided with a central air hole communicated with the needle cylinder, the outer wall of the needle cylinder is rotationally provided with a swivel, the outer wall of the swivel is circumferentially provided with a plurality of rectangular blades deviated from the axis of the needle cylinder, the inner wall of the swivel is provided with an annular groove in sealed communication with the needle cylinder, and the blade is horizontally provided with an exhaust hole in communication with the annular groove.

[0005] Preferably, the needle cylinder comprises a cylinder body with an open top and an upper cover threadedly connected with the cylinder body, a sealing gasket is arranged between the cylinder body and the upper cover, the outer wall of the cylinder body is provided with a side hole in communication with the annular groove, the inner wall of the swivel is provided with two sealing rings, and the sealing rings are respectively located on the upper and lower sides of the annular groove.

[0006] Preferably, the needle is also provided with a plurality of sub-gas holes arranged equidistantly around the central gas hole, the gas inlet ends of the plurality of sub-gas holes are arranged equidistantly along the axial direction of the needle, and the gas outlet ends are communicated with the needle cylinder through a one-way valve, the upper end surface of the rotating ring is provided with a proximity block, and the needle cylinder is provided with a proximity switch for detecting the approach of the proximity block.

[0007] Preferably, the driving mechanism comprises a rectangular lifting rod vertically slidable through the top of the gantry, the bottom of the lifting rod is connected with the needle cylinder, the side wall is provided with a rack, the top of the gantry is provided with a servo motor, and the output end of the servo motor is connected with a third gear engaged with the rack.

[0008] Preferably, the tire mounting mechanism comprises a lifting plate vertically slidingly arranged on the gantry, the lifting plate is provided with a horizontal telescopic mechanism, the horizontal telescopic mechanism comprises a fixed disc capable of being connected with the hub of the tire, the fixed disc is connected with a horizontal threaded rod and a guide rod parallel to the horizontal threaded rod, the guide rod slidingly penetrates through the lifting plate, and the lifting plate is provided with a horizontal threaded cylinder screw-connected with the horizontal threaded rod and rotatingly penetrating through the lifting plate.

[0009] Preferably, the lifting plate is provided with a vertical telescopic mechanism, the vertical telescopic mechanism comprises a vertical threaded rod rotationally connected with the upper end surface of the lifting plate, and the top of the gantry is fixedly provided with a vertical threaded cylinder screw-connected with the vertical threaded rod.

[0010] Preferably, the lifting plate is provided with a telescopic driving mechanism, the telescopic driving mechanism comprises a driving shaft and a driven shaft rotationally arranged on the lifting plate, the driving shaft is provided with a first gear, the driven shaft is provided with a first bevel gear and a second gear, the vertical threaded rod is provided with a second bevel gear engaged with the first bevel gear, and the horizontal threaded cylinder is provided with a gear ring, the driving shaft penetrates through the lifting plate and can move horizontally, and the first gear is selectively engaged with the second gear and the gear ring.

[0011] Preferably, one end of the driving shaft is provided with a handle and a first gear, and the other end penetrates through the lifting plate and is connected with a limiting flange.

[0012] Preferably, the gantry comprises a base, two vertical columns arranged on the base, and a cross beam arranged at the top of the vertical columns, the inner side wall of the vertical column is provided with a vertical sliding groove, the lifting plate is provided with a sliding block matched with the vertical sliding groove, and the cross beam comprises a main beam connected with the two vertical columns and a convex beam perpendicular to the main beam, the convex beam is provided with a sliding hole for the lifting rod and the rack to pass through and a vertical plate for fixing the servo motor.

[0013] The application provides a use method of a tire puncture resistance performance detection device, comprising the following steps: Step S1, connecting the servo motor of the driving mechanism with the controller, connecting the controller with a display, inflating the tire, and making the tire pressure reach the detection pressure. Step S2, the tire is vertically fixed on the tire mounting mechanism, and the needle of the puncture mechanism is aligned with the tire; Step S3, the driving mechanism drives the puncture mechanism to pierce the tire at the detection speed, if the needle of the puncture mechanism pierces the tire, the gas in the tire enters the needle cylinder through the central gas hole on the needle, and then enters the annular groove of the rotating ring, and finally is discharged from the exhaust hole on the vane which is communicated with the annular groove, the gas pushes the vane and the rotating ring connected with the vane to rotate in the process of discharging; if the needle of the puncture mechanism does not pierce the tire, the vane and the rotating ring are stationary, and the anti-puncture performance of the tire is best; Step S4, after the detection is completed, the driving mechanism drives the puncture mechanism to reset, the needle is separated from the tire, and finally the tire is removed to complete one detection.

[0014] Compared with the prior art, the present application has the following beneficial technical effects: 1. The present application sets a central gas hole on the needle of the puncture mechanism, and a needle cylinder, a rotating ring and a vane which are communicated with the central hole. By observing whether the rotating ring and the vane rotate, it can be known whether the needle pierces the tire, so as to quickly judge the advantages and disadvantages of the anti-puncture performance of the tire; 2. A plurality of gas distribution holes are arranged on the needle of the puncture mechanism, the gas inlet ends of the plurality of gas distribution holes are equidistantly arranged along the axis of the needle, and as the piercing depth of the needle increases, the rotation speed of the rotating ring and the vane increases. By counting the number of times of approaching the approaching block on the rotating ring through the proximity switch, the rotation rate of the rotating ring can be obtained. The smaller the rotation rate is, the shallower the piercing depth of the needle into the tire is, and the better the anti-puncture performance of the tire is; 3. The horizontal telescopic mechanism on the tire mounting mechanism can quickly connect and fix the fixed disc with the rim of the tire, and can also adjust the position of the tire in the horizontal direction to align the needle of the puncture mechanism; 4. The vertical telescopic mechanism can adjust the distance between the fixed disc on the horizontal telescopic mechanism and the ground, so that the tire is in natural contact with the ground, and the horizontal telescopic mechanism is supported by the ground, avoiding bending and deformation, and prolonging the service life of the equipment; 5. The telescopic driving mechanism can control the telescoping of the horizontal telescopic mechanism and the vertical telescopic mechanism through its own horizontal movement and rotation, which is simple and convenient to operate; In summary, the present application can quickly judge the advantages and disadvantages of the anti-puncture performance of the tire, and the tire mounting is simple, and the service life of the equipment is long. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the present application; Figure 2 is a right view of the puncture mechanism; Figure 3 is Figure 2 A-A sectional view of Figure 4 is a B-B sectional view of the tire installation mechanism; Figure 2 Figure 5 is a structural schematic view of the driving mechanism; Figure 6 is a structural schematic view of the tire fixing mechanism; Figure 7 is a right view of the tire fixing mechanism; Figure 8 is a partial exploded view of the tire fixing mechanism; Figure 9 is a structural schematic view of the gantry; Figure 10 is a structural schematic view of the tire installation mechanism after the tire is installed.

[0016] Explanation of Reference Signs 1, gantry, 11, base, 12, upright column, 121, vertical sliding slot, 13, cross beam, 131, main beam, 132, convex beam, 133, sliding hole, 134, vertical plate, 2, tire installation mechanism, 21, lifting plate, 211, sliding block, 212, round shaft, 213, first round groove, 214, first bearing, 22, horizontal telescopic mechanism, 221, fixing disc, 222, horizontal threaded rod, 223, guide rod, 224, horizontal threaded cylinder, 2241, first annular flange, 2242, first rotary disc bearing, 23, vertical telescopic mechanism, 231, vertical threaded rod, 2311, second round groove, 2312, second bearing, 232, vertical threaded cylinder, 24, telescopic driving mechanism, 241, driving shaft, 2411, handle, 2412, limiting flange, 242, driven shaft, 243, first gear, 244, first bevel gear, 245, second gear, 246, second bevel gear, 247, gear ring, 3, piercing mechanism, 31, needle, 311, central air hole, 312, air distribution hole, 32, needle cylinder, 321, cylinder body, 322, upper cover, 323, sealing gasket, 324, side hole, 325, second annular flange, 326, second rotary disc bearing, 33, rotary ring, 331, annular groove, 332, sealing ring, 34, blade, 341, exhaust hole, 35, one-way valve, 36, proximity block, 37, proximity switch, 4, driving mechanism, 41, lifting rod, 42, rack, 43, servo motor, 44, third gear. DETAILED DESCRIPTION

[0017] The specific embodiment of the present application is described below in conjunction with the accompanying drawings and examples: ​It should be noted that the structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions that can be implemented by the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose that can be achieved by the present application, should be within the scope of the technology disclosed by the present application.

[0018] At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" mentioned in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantial change of technical content, is also considered as the scope of the present application. Example 1

[0019] In combination with the drawings Figures 1-10 The present embodiment provides a tire puncture resistance detection device, which comprises a gantry 1, wherein a tire mounting mechanism 2, a puncture mechanism 3 and a driving mechanism 4 for driving the puncture mechanism 3 to move up and down are arranged on the gantry 1 from bottom to top. The puncture mechanism 3 comprises a needle 31 and a sealed needle cylinder 32. The needle 31 is axially provided with a central air hole 311 in communication with the needle cylinder 32. The outer wall of the needle cylinder 32 is rotationally provided with a rotating ring 33. The outer wall of the rotating ring 33 is circumferentially and equidistantly provided with a plurality of rectangular blades 34 deviated from the axis of the needle cylinder 32. The inner wall of the rotating ring 33 is provided with an annular groove 331 in sealed communication with the needle cylinder 32. The blade 34 is horizontally provided with an exhaust hole 341 in communication with the annular groove 331.

[0020] The tire mounting mechanism 2 can fix the tire in a vertical state, and the driving mechanism 4 can adopt a conventional displacement driving part such as a cylinder or a hydraulic cylinder, and can drive the puncture mechanism 3 to puncture the tire. In use, the puncture mechanism 3 is connected with the controller, the controller is connected with the display, the tire is inflated, the tire pressure reaches the detection pressure, then the tire is fixed in a vertical state (the vertical state refers to the state of the tire when it is running, that is, the rotating shaft of the tire is parallel to the ground) on the tire mounting mechanism 2, the driving mechanism 4 drives the puncture mechanism 3 to puncture the tire at a detection speed, if the needle 31 of the puncture mechanism 3 punctures the tire, the gas in the tire enters the needle cylinder 32 through the central gas hole 311 on the needle 31, then enters the annular groove 331 of the rotating ring 33 from the needle cylinder 32, and finally is discharged from the exhaust hole 341 of the vane 34 which is in communication with the annular groove 331. Since the vane 34 deviates from the axis of the needle cylinder 32 (that is, the extension line of the vane 34 does not intersect the central axis of the needle cylinder 32, and does not coincide with the radial line of the needle cylinder 32), when the gas passes through the exhaust hole 341 of the vane 34, the pressure of the gas will be decomposed into radial force and deflection force, and the deflection force will drive the vane 34 to rotate, so that the gas will drive the vane 34 and the rotating ring 33 connected with the vane 34 to rotate during the discharge process. If the needle 31 of the puncture mechanism 3 does not puncture the tire, no gas will be discharged, and the vane 34 and the rotating ring 33 will be stationary. After the detection is completed, the driving mechanism 4 drives the puncture mechanism 3 to reset, the needle 31 is separated from the tire, and finally the tire is removed to complete one detection.

[0021] In the embodiment, the central gas hole 311 is arranged on the needle 31 of the puncture mechanism 3, and the needle cylinder 32, the rotating ring 33 and the vane 34 are in communication with the central gas hole 311. Whether the needle 31 punctures the tire can be known by observing whether the rotating ring 33 and the vane 34 rotate, so that the advantages and disadvantages of the tire puncture resistance can be quickly judged.

[0022] In one specific technical solution, the needle cylinder 32 comprises a top-opened cylinder body 321 and an upper cover 322 threadedly connected with the cylinder body 321, a sealing gasket 323 is arranged between the cylinder body 321 and the upper cover 322, a side hole 324 in communication with the annular groove 331 is arranged on the outer side wall of the cylinder body 321, and two sealing rings 332 are arranged on the inner side wall of the rotating ring 33.

[0023] In the technical scheme, the barrel body 321 of the needle cylinder 32 is preferably integrally formed with the needle head 31, the upper cover 322 of the barrel body 321 is used to seal the top opening of the barrel body 321, the inner side wall of the rotating ring 33 is provided with a sealing ring 332, so as to improve the sealing performance between the annular groove 331 and the barrel body 321, and the rotating ring 33 can be rotatably connected with the barrel body 321 in any suitable manner. In the embodiment, the outer side wall of the barrel body 321 is provided with a second annular flange 325, the second annular flange 325 is provided with a second rotating disc bearing 326, and the second rotating disc bearing 326 is connected with the rotating ring 33.

[0024] In a specific technical scheme, the needle head 31 is further provided with a plurality of gas distribution holes 312 which are arranged at equal intervals around the central gas hole 311, the gas inlet ends of the plurality of gas distribution holes 312 are arranged at equal intervals along the axial direction of the needle head 31, the gas outlet ends are communicated with the needle cylinder 32 through the one-way valve 35, the upper end surface of the rotating ring 33 is provided with a proximity block 36, and the needle cylinder 32 is provided with a proximity switch 37 for detecting the proximity of the proximity block 36.

[0025] In the technical scheme, the gas inlet ends of the plurality of gas distribution holes 312 are arranged at equal intervals along the axial direction of the needle head 31, which means that there is a height difference between the gas inlet ends of the plurality of gas distribution holes 312. Since the plurality of gas distribution holes 312 are arranged at equal intervals around the central gas hole 311, the gas inlet ends of the plurality of gas distribution holes 312 are also dispersed around the circumferential side wall of the needle head 31, rather than being located on the same vertical straight line. The one-way valve 35 can ensure that the gas flow is unidirectional from the needle head 31 to the needle cylinder 32, so as to avoid the gas flow in the needle cylinder 32 from flowing back to the needle head 31. The plurality of gas distribution holes 312 can detect the depth of the needle head 31 penetrating into the tire. The central gas hole 311 is located on the central axis of the needle cylinder 32, and the gas inlet end thereof is lower than the gas inlet ends of the plurality of gas distribution holes 312. When the needle head 31 penetrates into the tire, since the gas inlet ends of the plurality of gas distribution holes 312 are arranged at equal intervals along the axial direction of the needle head 31, the number of the gas distribution holes 312 which are communicated with the inner cavity of the tire increases with the increase of the penetration depth of the needle head 31, that is, the gas flow from the needle head 31 to the needle cylinder 32 increases. The increase of the gas flow can increase the rotation speed of the rotating ring 33 and the blade 34. The rotation speed of the rotating ring 33 can be obtained by counting the number of times that the proximity block 36 on the rotating ring 33 approaches the proximity switch 37 within a certain time. The smaller the rotation speed is, the shallower the penetration depth of the needle head 31 into the tire is, and the better the puncture resistance of the tire is. The larger the rotation speed is, the deeper the penetration depth of the needle head 31 into the tire is, and the worse the puncture resistance of the tire is.

[0026] In a specific technical scheme, the driving mechanism 4 comprises a rectangular lifting rod 41 which is vertically slidable through the top of the gantry 1, the bottom of the lifting rod 41 is connected with the needle cylinder 32, the side wall of the lifting rod 41 is provided with a rack 42, the top of the gantry 1 is provided with a servo motor 43, and the output end of the servo motor 43 is connected with a third gear 44 which is engaged with the rack 42.

[0027] In the technical scheme, the third gear 44 is driven to rotate by the servo motor 43, the rack 42 engaged with the third gear 44 and the lifting rod 41 connected with the rack 42 are driven to ascend or descend by the rotation of the third gear 44, and finally the ascending or descending of the puncture mechanism 3 connected with the lifting rod 41 is driven, so that the speed and depth of the puncture mechanism 3 puncturing into the tire can be adjusted by adjusting the rotating speed and number of the servo motor 43.

[0028] In one specific technical scheme, the tire mounting mechanism 2 comprises a lifting plate 21 vertically sliding on the gantry 1, a horizontal telescopic mechanism 22 is arranged on the lifting plate 21, the horizontal telescopic mechanism 22 comprises a fixed disc 221 capable of being connected with the hub of the tire, the fixed disc 221 is connected with a horizontal threaded rod 222 and a guide rod 223 parallel to the horizontal threaded rod 222, the guide rod 223 slidingly penetrates the lifting plate 21, and a horizontal threaded cylinder 224 screwing with the horizontal threaded rod 222 is arranged on the lifting plate 21 and rotates.

[0029] In the technical scheme, the horizontal telescopic mechanism 22 can adjust the horizontal distance between the tire and the gantry 1 by horizontal telescoping, so that the puncture part of the tire faces the needle 31 of the puncture mechanism 3. The fixed disc 221 is used for fixing the tire, preferably a bolt is used to connect the hub of the tire and the fixed disc 221, and the guide rod 223 can circumferentially lock the fixed disc 221 and the lifting plate 21 to avoid circumferential rotation of the fixed disc 221 relative to the lifting plate 21. In use, rotating the horizontal threaded cylinder 224 can drive the horizontal threaded rod 222 and the fixed disc 221 connected with the horizontal threaded rod 222 to move horizontally, so as to adjust the position of the tire. The horizontal threaded cylinder 224 can penetrate the lifting plate 21 and be rotatably connected with the lifting plate 21 in any suitable manner. In the embodiment, one end of the horizontal threaded cylinder 224 is provided with a first annular flange 2241, the first annular flange 2241 is connected with a first turntable bearing 2242, and the first turntable bearing 2242 is connected with the lifting plate 21.

[0030] In one specific technical scheme, the lifting plate 21 is provided with a vertical telescopic mechanism 23, the vertical telescopic mechanism 23 comprises a vertical threaded rod 231 rotatably connected with the upper end surface of the lifting plate 21, and the top of the gantry 1 is fixedly provided with a vertical threaded cylinder 232 screwing with the vertical threaded rod 231.

[0031] In the technical scheme, the vertical telescopic mechanism 23 can adjust the distance between the fixing disc 221 and the ground, so that the tire can be in natural contact with the ground, and the ground can support the tire. At this time, the horizontal telescopic mechanism 22 only plays a righting role for the tire, ensures that the tire is in a vertical state, and avoids the problem that the horizontal telescopic mechanism 22 is bent and deformed due to the pressure of the tire weight. When installing, the tire is in a vertical rolling state, and the tire is rolled to the installation position. At this time, the tire is in natural contact with the ground. By rotating the vertical threaded rod 231, the vertical height of the fixing disc 221 is adjusted to keep consistent with the position of the hub. Then, the hub and the fixing disc 221 are connected and fixed. The rotating connection mode of the vertical threaded rod 231 and the lifting plate 21 is not limited. In the embodiment, the lower end surface of the vertical threaded rod 231 is provided with a second circular groove 2311, the second circular groove 2311 is fixedly provided with a second bearing 2312, and the upper end surface of the lifting plate 21 is provided with a circular shaft 212 connected with the second bearing 2312.

[0032] In one specific technical scheme, the lifting plate 21 is provided with a telescopic driving mechanism 24, the telescopic driving mechanism 24 includes a driving shaft 241 and a driven shaft 242 which are rotatably arranged on the lifting plate 21, the driving shaft 241 is provided with a first gear 243, the driven shaft 242 is provided with a first bevel gear 244 and a second gear 245, the vertical threaded rod 231 is provided with a second bevel gear 246 engaged with the first bevel gear 244, the horizontal threaded cylinder 224 is provided with a gear ring 247, and the driving shaft 241 penetrates through the lifting plate 21 and can move horizontally, so that the first gear 243 is selectively engaged with the second gear 245 and the gear ring 247.

[0033] In the above technical solution, the telescopic driving mechanism 24 can control the telescoping of the horizontal telescopic mechanism 22 and the vertical telescopic mechanism 23 through horizontal movement and rotation of the telescopic driving mechanism 24. When the horizontal telescopic mechanism 22 needs to be controlled to telescope, the horizontal movement of the driving shaft 241 is performed so that the first gear 243 on the driving shaft 241 meshes with the gear ring 247, and then the driving shaft 241 is rotated to drive the horizontal threaded cylinder 224 to rotate through the meshing transmission structure of the first gear 243 and the gear ring 247, thereby driving the horizontal threaded rod 222 and the fixed disc 221 to move horizontally. When the vertical telescopic mechanism 23 needs to be controlled to telescope, the horizontal movement of the driving shaft 241 is performed so that the first gear 243 on the driving shaft 241 meshes with the second gear 245, and then the driving shaft 241 is rotated to drive the driven shaft 242 to rotate through the meshing transmission structure of the first gear 243 and the second gear 245, thereby driving the vertical threaded rod 231 and the lifting plate 21 to move vertically through the meshing transmission structure between the first bevel gear 244 on the driven shaft 242 and the second bevel gear 246 on the vertical threaded rod 231. The driven shaft 242 can be rotatably installed on the lifting plate 21 in any suitable form. In the embodiment, the lifting plate 21 is provided with a first circular groove 213, and the first circular groove 213 is provided with a first bearing 214 connected with the driven shaft 242.

[0034] In one specific technical solution, one end of the driving shaft 241 is provided with a handle 2411 and a first gear 243, and the other end is connected with a limiting flange 2412 after penetrating through the lifting plate 21.

[0035] In the above technical solution, the handle 2411 can facilitate the rotation of the driving shaft 241 by workers, and the limiting flange 2412 can control the horizontal displacement of the driving shaft 241. In the embodiment, when the first gear 243 meshes with the gear ring 247, the first gear 243 abuts against the lifting plate 21, and the limiting flange 2412 is farthest away from the lifting plate 21. When the first gear 243 meshes with the second gear 245, the first gear 243 is farthest away from the lifting plate 21, and the limiting flange 2412 abuts against the lifting plate 21.

[0036] In one specific technical solution, the gantry 1 comprises a base 11, two vertical columns 12 arranged on the base 11, a cross beam 13 arranged on the top of the vertical columns 12, vertical sliding grooves 121 arranged on the inner side walls of the vertical columns 12, sliding blocks 211 arranged on the lifting plate 21 and matched with the vertical sliding grooves 121, the cross beam 13 comprising a main beam 131 connected with the two vertical columns 12 and a convex beam 132 perpendicular to the main beam 131, the convex beam 132 comprising sliding holes 133 for the lifting rod 41 and the rack 42 to pass through and a vertical plate 134 for fixing the servo motor 43. The gantry 1 is a conventional support structure in the prior art, the main body structure of which comprises the vertical columns 12 and the cross beam 13, then according to the specific process requirements, the specific shape of the vertical columns 12 and the cross beam 13 can be designed, in the present application, the lifting plate 21 is arranged between the two vertical columns 12, which can improve the lifting stability of the lifting plate 21, the convex beam 132 is arranged on the cross beam 13, which can match the mounting and fixing position of the tire, so as to ensure that the puncture mechanism 3 can be aligned with the tire.

[0037] The working principle and working process of the present embodiment are as follows: ① connect the proximity switch 37 of the puncture mechanism 3 and the servo motor 43 of the driving mechanism 4 with the controller, and connect the display with the controller; ② inflate the tire to the detection pressure, then roll the tire vertically to the tire mounting mechanism 2, control the vertical telescopic mechanism 23 to vertically extend and retract through the telescopic driving mechanism 24, so that the lifting plate 21 vertically moves to the appropriate position, at this time, the fixed disc 221 of the horizontal telescopic mechanism 22 on the lifting plate 21 is consistent with the height of the hub of the tire, connect and fix the fixed disc 221 with the hub, control the horizontal telescopic mechanism 22 to horizontally extend and retract through the telescopic driving mechanism 24, so that the tire moves to the directly below the puncture mechanism 3; ③ drive the puncture mechanism 3 to pierce the tire at the detection speed through the driving mechanism 4, if the needle 31 of the puncture mechanism 3 pierces the tire, the gas in the tire enters the needle cylinder 32 through the central gas hole 311 and the gas distribution hole 312 on the needle 31, then enters the annular groove 331 of the rotating ring 33 from the needle cylinder 32, and finally is discharged from the exhaust hole 341 on the blade 34 which is communicated with the annular groove 331, the gas pushes the blade 34 and the rotating ring 33 connected with the blade 34 to rotate in the process of discharging, the rotation rate of the rotating ring 33 can be obtained by counting the number of times that the proximity block 36 on the rotating ring 33 approaches the proximity switch 37 within a certain period of time, the smaller the rotation rate, the shallower the depth of the needle 31 piercing into the tire, and the better the puncture resistance of the tire, when the rotation rate is zero, it indicates that the needle 31 does not pierce the tire, and the puncture resistance is the best, the greater the rotation rate, the deeper the depth of the needle 31 piercing into the tire, and the worse the puncture resistance of the tire; ④ after the detection is completed, drive the puncture mechanism 3 to reset through the driving mechanism 4, the needle 31 is separated from the tire, and finally the tire is removed to complete one detection. Embodiment 2

[0038] Combined with the drawings Figures 1-10The embodiment provides a use method of the tire puncture resistance performance detection device, and the tire puncture resistance performance detection device is used in the embodiment 1, and the use method comprises the following steps: Step S1, the servo motor 43 of the driving mechanism 4 is connected with the controller, the controller is connected with the display, the tire is inflated, and the tire pressure reaches the detection pressure; Step S2, the tire is vertically fixed on the tire mounting mechanism 2, and the needle 31 of the puncture mechanism 3 is aligned with the tire; Step S3, the driving mechanism 4 drives the puncture mechanism 3 to pierce the tire at the detection speed, if the needle 31 of the puncture mechanism 3 pierces the tire, the gas in the tire enters the needle cylinder 32 through the center gas hole 311 on the needle 31, then enters the annular groove 331 of the rotating ring 33 from the needle cylinder 32, and finally is discharged from the exhaust hole 341 of the vane 34 communicated with the annular groove 331, and the gas pushes the vane 34 and the rotating ring 33 connected with the vane 34 to rotate in the discharging process; if the needle 31 of the puncture mechanism 3 does not pierce the tire, the vane 34 and the rotating ring 33 are stationary, and the puncture resistance performance of the tire is best; Step S4, after detection, the driving mechanism 4 drives the puncture mechanism 3 to reset, the needle 31 is separated from the tire, and finally the tire is taken off to complete one detection.

[0039] The above embodiment is a preferred embodiment of the application, but the embodiment of the application is not limited to the above embodiment, and any change, modification, replacement, combination and simplification without departing from the spirit and principle of the application should be equivalent replacement mode, and all are included in the protection scope of the application.

Claims

1. A tire puncture resistance testing device, comprising a gantry (1), characterized in that: The gantry (1) is provided with a tire mounting mechanism (2), a piercing mechanism (3), and a driving mechanism (4) for driving the piercing mechanism (3) to move up and down, from bottom to top. The piercing mechanism (3) comprises a needle (31) and a sealed syringe (32). The needle (31) is axially provided with a central air hole (311) communicating with the syringe (32). The outer wall of the syringe (32) is rotatably provided with a rotating ring (33). The outer wall of the rotating ring (33) is equidistantly provided with a plurality of rectangular blades (34) deviating from the axis of the syringe (32). The inner wall of the rotating ring (33) is provided with an annular groove (331) communicating with the syringe (32) in a sealed manner. The blade (34) is horizontally provided with an exhaust hole (341) communicating with the annular groove (331).

2. A tire puncture resistance testing device according to claim 1, characterized in that: The syringe (32) comprises a barrel (321) with an opening at the top and an upper cover (322) threadedly connected to the barrel (321). A sealing gasket (323) is provided between the barrel (321) and the upper cover (322). The outer wall of the barrel (321) is provided with a side hole (324) communicating with the annular groove (331). The inner wall of the rotating ring (33) is provided with two sealing rings (332), and the sealing rings (332) are respectively located on the upper and lower sides of the annular groove (331).

3. A tire puncture resistance testing device according to claim 2, characterized in that: The needle (31) is further provided with a plurality of air distribution holes (312) equidistantly arranged around the central air hole (311). The air inlet ends of the plurality of air distribution holes (312) are equidistantly arranged along the axial direction of the needle (31), and the air outlet ends are connected to the syringe (32) via a one-way valve (35). The upper end surface of the rotating ring (33) is provided with a proximity block (36), and the syringe (32) is provided with a proximity switch (37) for detecting the approach of the proximity block (36).

4. A tire puncture resistance testing device according to claim 3, characterized in that: The driving mechanism (4) comprises a rectangular lifting rod (41) which is vertically slidable and passes through the top of the gantry (1); the bottom of the lifting rod (41) is connected to the syringe (32); a rack (42) is provided on the side wall; a servo motor (43) is provided on the top of the gantry (1); an output end of the servo motor (43) is connected to a third gear (44) which is meshed with the rack (42).

5. A tire puncture resistance testing device according to claim 4, characterized in that: The tire mounting mechanism (2) comprises a lifting plate (21) vertically slidably arranged on the gantry (1); a horizontal telescopic mechanism (22) is provided on the lifting plate (21); the horizontal telescopic mechanism (22) comprises a fixing plate (221) capable of being connected to a wheel hub of the tire; the fixing plate (221) is connected to a horizontal threaded rod (222) and a guide rod (223) parallel to the horizontal threaded rod (222); the guide rod (223) slides through the lifting plate (21); a horizontal threaded cylinder (224) is rotatably provided on the lifting plate (21) and is threadedly connected to the horizontal threaded rod (222).

6. A tire puncture resistance testing device according to claim 5, characterized in that: A vertical telescopic mechanism (23) is provided on the lifting plate (21), and the vertical telescopic mechanism (23) comprises a vertical threaded rod (231) rotatably connected to the upper end surface of the lifting plate (21). A vertical threaded cylinder (232) threadedly connected to the vertical threaded rod (231) is fixedly provided on the top of the gantry (1).

7. A tire puncture resistance testing device according to claim 6, characterized in that: The lifting plate (21) is provided with a telescopic drive mechanism (24), the telescopic drive mechanism (24) comprising a driving shaft (241) and a driven shaft (242) rotatably provided on the lifting plate (21), the driving shaft (241) being provided with a first gear (243), the driven shaft (242) being provided with a first bevel gear (244) and a second gear (245), the vertical threaded rod (231) being provided with a second bevel gear (246) meshing with the first bevel gear (244), the horizontal threaded cylinder (224) being provided with a gear ring (247), the driving shaft (241) passing through the lifting plate (21) and being capable of horizontal movement, so that the first gear (243) selectively meshes with the second gear (245) and the gear ring (247).

8. A tire puncture resistance testing device according to claim 7, characterized in that: One end of the driving shaft (241) is provided with a handle (2411) and a first gear (243), and the other end passes through the lifting plate (21) and is connected to the limiting flange (2412).

9. A tire puncture resistance testing device according to claim 7, characterized in that: The gantry (1) includes a base (11), two columns (12) arranged on the base (11), and a crossbeam (13) arranged on the top of the column (12). The inner wall of the column (12) is provided with a vertical slide groove (121). The lifting plate (21) is provided with a slider (211) that cooperates with the vertical slide groove (121). The crossbeam (13) includes a main beam (131) connected to the two columns (12) and a convex beam (132) perpendicular to the main beam (131). The convex beam (132) is provided with a sliding hole (133) for the lifting rod (41) and the rack (42) to pass through, and a vertical plate (134) for fixing the servo motor (43).

10. A method for using a tire puncture resistance testing device, characterized in that: Using the tire puncture resistance performance testing device according to claim 1, comprising the following steps: Step S1, connecting the servo motor (43) of the driving mechanism (4) to the controller, the controller is connected to the display, and the tire is inflated to make the tire pressure reach the detection pressure; Step S2, vertically fixing the tire on the tire mounting mechanism (2), aligning the needle (31) of the piercing mechanism (3) with the tire; Step S3, the driving mechanism (4) drives the puncture mechanism (3) to puncture the tire at a detection speed. If the needle (31) of the puncture mechanism (3) punctures the tire, the gas in the tire enters the syringe (32) through the central air hole (311) on the needle (31), then enters the annular groove (331) of the rotating ring (33) from the syringe (32), and finally is discharged from the exhaust hole (341) on the blade (34) that is connected to the annular groove (331). During the discharge process, the gas drives the blade (34) and the rotating ring (33) connected to the blade (34) to rotate; if the needle (31) of the puncture mechanism (3) does not puncture the tire, the blade (34) and the rotating ring (33) remain stationary, and the tire has the best puncture resistance performance; Step S4: After the detection is completed, the driving mechanism (4) drives the piercing mechanism (3) to reset, and the needle (31) is separated from the tire. Finally, the tire is removed to complete one detection.

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