A tire wire ring strength testing device

Abstract

The present invention relates to the technical field of tire wire ring testing, and discloses a tire wire ring strength testing device, comprising a base, a testing unit, two groups of clamping units, two groups of wire pressing units, and two groups of fixing units; the testing unit comprises a support frame fixedly mounted on the top surface of the base, two test cylinders symmetrically fixedly mounted on the support frame, and brackets fixedly mounted on the telescopic ends of the test cylinders. The present invention adapts to steel wires of different diameters by designing slots with different inner diameters, and utilizes the mutual attraction magnetic force between magnetic sheets to drive the rotating plate on the clamping plate to clamp and fix the steel wire, thereby achieving fast and stable clamping of steel wires of different specifications. This design not only improves work efficiency, but also ensures that during the steel wire loading test, the staff only needs to place the steel wire on the two clamping plates to complete the loading, and the rotating plate and the clamping plate are automatically separated during the strength test to facilitate the strength test, thereby avoiding the impact on the accuracy of the strength test.

Description

Technical Field

[0001] The present invention relates to the technical field of tire bead ring testing, and in particular to a tire bead ring strength testing device. Background Art

[0002] The tire bead, also known as a bead ring or bead wire, is a rigid ring made of rubber-coated steel wire (or copper-plated steel wire) arranged in a specific cross-sectional shape. It is a crucial component of the tire. Its primary function is to impart the necessary strength and rigidity to the bead, allowing the tire to securely attach to the rim. It is the primary component that secures the tire to the rim, ensuring stability and safety during driving.

[0003] A search revealed that Chinese patent publication number CN119246219B discloses a tire bead strength tester. This device replaces the traditional direct clamping method with a coiling method, significantly avoiding the fracture of the clamping area caused by excessive local stress concentration in the traditional clamping test method. This effectively alleviates the stress concentration problem of the wire in the traditional clamping method, making the test results more accurate and reliable. However, this solution still has the following shortcomings in actual use:

[0004] When assembling and fixing the tire wire ring, the above-mentioned device relies on manual operation or the use of a robot to complete the precise positioning and tightening of the wire. However, both methods have significant limitations. When manually fixing the wire, the operation process is quite cumbersome because the wire is thin and has a certain elasticity, and there are major safety hazards. When tightening the wire, workers are easily injured by the sudden rebound or slippage of the wire, which not only affects work efficiency but also poses a serious threat to the safety of the operator. On the other hand, although the robot can achieve higher-precision operations and reduce the risk of human error and injury, its high manufacturing cost and maintenance costs make this solution economically unfeasible, especially for small and medium-sized enterprises, which find it difficult to afford such an investment, thereby limiting the widespread promotion and application of the entire device.

[0005] Therefore, it is necessary to design a tire bead ring strength testing device to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tire wire ring strength testing device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A tire bead ring strength testing device comprises a base, a testing unit, two sets of clamping units, two sets of wire pressing units and two sets of fixing units;

[0009] The test unit includes a support frame fixedly mounted on the top surface of the base, two test cylinders are symmetrically fixedly mounted on the support frame, a bracket is fixedly mounted on the telescopic end of the test cylinder, a fixing seat is fixedly mounted on the inner wall of the bracket, and the two groups of the clamping unit, the wire pressing unit and the fixing unit correspond to the two fixing seats respectively;

[0010] The clamping unit includes a guide rod fixedly mounted on the inner wall of the support frame, a clamping plate fixedly mounted on the end of the guide rod, a guide ring slidably mounted on the guide rod, a spring is provided between the guide ring and the clamping plate, a rotating plate is rotatably mounted on the side of the clamping plate, a connecting plate is fixedly mounted on the side of the rotating plate, a sliding groove is provided on the side of the connecting plate, a top plate is fixedly mounted on the outer wall of the guide ring, and the end of the top plate is slidably connected to the sliding groove.

[0011] As a preferred technical solution of the present invention, the two ends of the spring 1 are fixedly connected to the guide ring and the clamping plate respectively, and a plurality of slots are provided on the side of the clamping plate.

[0012] As a preferred technical solution of the present invention, the wire pressing unit includes a rotating shaft rotatably mounted on the side of the fixed seat, the outer wall of the rotating shaft is fixedly sleeved with a transmission gear, the inner wall of the support frame is fixedly mounted with a fixed rack engaged with the transmission gear, the end of the rotating shaft is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the rotating shaft and the fixed seat, the outer wall of the rotating shaft is fixedly mounted with a connecting frame, and the end of the connecting frame is rotatably sleeved with a pressing roller.

[0013] As a preferred technical solution of the present invention, the cross-sectional shape of the fixing seat is set to be semicircular, and the corners of the fixing seat are chamfered, and the outer wall of the pressure roller fits the outer wall of the fixing seat.

[0014] As a preferred technical solution of the present invention, a support rod is fixedly installed on the outer wall of the guide ring, a magnetic piece 1 is fixedly installed on the top of the support rod, a fixing frame is fixedly installed on the side of the fixing seat, and a magnetic piece 2 is fixedly installed on the bottom end of the fixing frame, and the magnetic poles of magnetic piece 1 and magnetic piece 2 are opposite.

[0015] As a preferred technical solution of the present invention, the fixing unit includes two connecting rods symmetrically fixedly installed on the outer wall of the fixing seat, a clamping seat is slidably installed on the connecting rod, and two springs are sleeved on the connecting rod, whose two ends are respectively fixedly connected to the connecting rod and the clamping seat. A fixing frame is fixedly installed on the inner wall of the support frame, a connecting plate is fixedly installed on the side of the clamping seat, and a transmission block is fixedly installed on the bottom surface of the end of the connecting plate.

[0016] As a preferred technical solution of the present invention, the end of the clamping seat away from the connecting plate is configured to be in an arc shape adapted to the outer wall of the fixing seat, and the cross-sectional shape of the transmission block is an isosceles trapezoid.

[0017] As a preferred technical solution of the present invention, the inner wall of the support frame is provided with a reminder unit adapted to the transmission block.

[0018] As a preferred technical solution of the present invention, the reminder unit includes a slide plate slidably mounted on the inner wall of the fixed frame, an elastic airbag is arranged between the slide plate and the inner wall of the support frame, a catheter is fixedly mounted on the side of the support frame, and the end of the catheter is connected to the elastic airbag, a mounting plate corresponding to the catheter is fixedly mounted on the side of the support frame, a plurality of alarm bells distributed in a circular array are arranged on the bottom surface of the mounting plate, a shaft rod is rotatably mounted on the bottom surface of the mounting plate, a knocking rod adapted to the alarm bell is fixedly mounted on the outer wall of the shaft rod, and a transmission structure is arranged between the catheter and the shaft rod.

[0019] As a preferred technical solution of the present invention, the transmission structure includes a piston plate slidably mounted on the inner wall of the catheter, a push rod is fixedly mounted on the side of the piston plate, and a spring is sleeved on the push rod with two ends fixedly connected to the side of the piston plate and the inner wall of the catheter respectively. A linkage rack is fixedly mounted on one end of the push rod located on the outside of the catheter, and a linkage gear meshing with the linkage rack is fixedly mounted on the bottom end of the shaft.

[0020] The present invention has the following beneficial effects:

[0021] 1. By setting up a clamping unit and designing slots with different inner diameters to accommodate steel wires of different diameters, and utilizing the mutual magnetic force between the magnetic sheets to drive the rotating plate on the clamping plate to clamp and fix the steel wire, fast and stable clamping of steel wires of different specifications is achieved. This design not only improves work efficiency, but also ensures that during the steel wire testing and loading process, the staff only needs to place the steel wire on the two clamping plates to complete the loading. In addition, during the strength test, the rotating plate and the clamping plate are automatically separated to facilitate the strength test, avoiding the impact on the accuracy of the strength test.

[0022] 2. By setting up a wire pressing unit, the engagement of the transmission gear and the fixed rack drives the pressing roller to press the end of the steel wire to achieve the bending of the steel wire. At the same time, the corners of the fixed seat are chamfered to avoid the risk of the steel wire being crushed during the bending process. This design ensures the accuracy and safety of the steel wire bending, provides a good foundation for subsequent clamping, fixing and strength testing, and avoids the steel wire from breaking at the clamping and fixing position;

[0023] 3. By setting up a fixing unit, after the steel wire is bent, the spring is used to push the clamping seat to slide along the connecting rod toward the fixing seat, firmly fixing the end of the steel wire between the clamping seat and the fixing seat. This design not only improves the stability of the steel wire during the test, but also avoids test errors caused by loosening of the steel wire during the test. At the same time, the sliding design of the clamping seat also makes it easy for the staff to quickly remove the steel wire after the test is completed.

[0024] 4. By setting up a reminder unit, before and after the test starts, the elastic airbag is stretched and compressed to drive the piston plate to slide along the tube, which in turn drives the linkage gear, shaft and knock rod to rotate and knock the alarm to emit a warning sound. This design not only reminds the staff of the start and end of the test, facilitating their timely operation and data statistics, but also improves the safety and controllability of the test process. At the same time, the alarm reminder also makes the entire test process more standardized and orderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a tire bead ring strength testing device proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional multi-angle structure of a tire bead ring strength testing device proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the clamping plate structure of a tire bead ring strength testing device proposed by the present invention;

[0028] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0029] Figure 5 This is a schematic diagram of the fixing base structure of a tire bead ring strength testing device proposed by the present invention;

[0030] Figure 6 for Figure 5 The enlarged structural diagram at B in the middle;

[0031] Figure 7 This is a schematic diagram of the structure of a clamping seat and a fixing frame of a tire bead ring strength testing device proposed by the present invention;

[0032] Figure 8 This is a schematic diagram of the transmission block structure of a tire bead ring strength testing device proposed by the present invention;

[0033] Figure 9 This is a schematic diagram of the partial cross-section structure of a guide tube of a tire bead strength testing device proposed by the present invention.

[0034] In the figure: 11, base; 12, support frame; 21, test cylinder; 22, bracket; 23, fixed seat; 31, guide rod; 32, clamping plate; 33, guide ring; 34, spring 1; 35, rotating plate; 36, connecting plate; 37, slide; 38, top plate; 39, support rod; 310, magnetic plate 1; 311, slot; 41, rotating shaft; 42, transmission gear; 43, fixed rack; 44, torsion spring; 45, connecting frame; 46, pressure roller; 51 , fixing frame; 52, magnetic plate two; 61, connecting rod; 62, clamping seat; 63, spring two; 64, fixing frame; 65, connecting plate; 66, transmission block; 71, slide plate; 72, elastic airbag; 73, catheter; 74, mounting plate; 75, alarm; 76, piston plate; 77, push rod; 78, spring three; 79, linkage rack; 710, linkage gear; 711, shaft; 712, knock rod; 81, scale line; 82, pointer. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1-9 , a tire bead ring strength testing device, comprising a base 11, a testing unit, two sets of clamping units, two sets of wire pressing units and two sets of fixing units;

[0037] Among them, the test unit includes a support frame 12 fixedly mounted on the top surface of the base 11, two test cylinders 21 are symmetrically fixedly mounted on the support frame 12, the telescopic end of the test cylinder 21 is fixedly mounted with a bracket 22, and the inner wall of the bracket 22 is fixedly mounted with a fixing seat 23. The cross-sectional shape of the fixing seat 23 is set to be semicircular, and the corners of the fixing seat 23 are chamfered. The two groups of clamping units, the wire pressing unit and the fixing unit correspond to the two fixing seats 23 respectively. Figure 2 As shown, the inner wall of the support frame 12 is provided with a scale line 81, and the telescopic end of the test cylinder 21 is fixedly mounted with a pointer 82 corresponding to the scale line 81;

[0038] like Figures 2 to 3 As shown, the clamping unit includes a guide rod 31 fixedly mounted on the inner wall of the support frame 12, a clamping plate 32 fixedly mounted on the end of the guide rod 31, a guide ring 33 slidably sleeved on the guide rod 31, a spring 34 is provided between the guide ring 33 and the clamping plate 32, the two ends of the spring 34 are respectively fixedly connected to the guide ring 33 and the clamping plate 32, a rotating plate 35 is rotatably mounted on the side of the clamping plate 32, a connecting plate 36 is fixedly mounted on the side of the rotating plate 35, a sliding groove 37 is provided on the side of the connecting plate 36, a top plate 38 is fixedly mounted on the outer wall of the guide ring 33, the end of the top plate 38 is slidably connected to the sliding groove 37, and a plurality of slots 311 are provided on the side of the clamping plate 32;

[0039] When the tire wire ring 31 is in use, the staff first needs to cut a section of the tire wire ring to be tested for testing. After cutting, the wire can be placed in the slots 311 on the sides of the two clamping plates 32. The inner diameters of the slots 311 are different. The staff needs to place wires of different diameters in the slots 311 of corresponding sizes. After the wires are placed, the staff can start the test cylinder 21. After the two test cylinders 21 are started, they can be shortened. As the test cylinder 21 shortens, the bracket 22 and the fixing seat 23 can move. After moving, under the action of the magnetic force, the guide ring 33 can be driven by the support rod 39 to slide along the guide rod 31 to compress the spring 1 34. When the guide ring 33 moves, it can push the rotating plate 35 through the top plate 38, so that the rotating plate 35 rotates close to the clamping plate 32 to clamp the wire in the slot 311. The staff can then release the wire to complete the loading. During the entire test process, the movement of the test cylinder 21 can be displayed by the pointer 82 and the scale line 81 for the staff to observe.

[0040] like Figure 5 As shown, the wire pressing unit includes a rotating shaft 41 rotatably mounted on the side of the fixed base 23, a transmission gear 42 is fixedly sleeved on the outer wall of the rotating shaft 41, a fixed rack 43 meshing with the transmission gear 42 is fixedly mounted on the inner wall of the support frame 12, a torsion spring 44 is sleeved on the end of the rotating shaft 41, and the two ends of the torsion spring 44 are respectively fixedly connected to the rotating shaft 41 and the fixed base 23, a connecting frame 45 is fixedly mounted on the outer wall of the rotating shaft 41, and a pressure roller 46 is rotatably sleeved on the end of the connecting frame 45, and the outer wall of the pressure roller 46 is in contact with the outer wall of the fixed base 23;

[0041] After the steel wire is clamped and fixed by the clamping plate 32 and the rotating plate 35, its two ends can be located on the sides of the two fixing seats 23. As the test cylinder 21 shortens, the fixing seat 23 continues to move, and the transmission gear 42 on its side can engage with the fixed rack 43, thereby driving the transmission gear 42 and the rotating shaft 41 to rotate. When the rotating shaft 41 rotates, it can drive the pressure roller 46 to rotate through the connecting frame 45. During the rotation of the connecting frame 45, the pressure roller 46 can press the end of the steel wire, so that the end of the steel wire is bent and adheres to the outer wall of the fixing seat 23. The corners of the fixing seat 23 are chamfered to prevent the steel wire from being crushed when it is bent. After the test is completed, the steel wire is in a broken state, and the staff can extend the two test cylinders 21. During the extension of the test cylinder 21, the transmission gear 42 can first engage with the fixed rack 43. At this time, the rotating shaft 41, the connecting frame 45 and the pressure roller 46 can rotate in the other direction, and when the pressure roller 46 rotates to the outer wall of the fixing seat 23, the broken end of the steel wire after the test can be pressed to the outer wall of the fixing seat 23 to fix the steel wire.

[0042] A support rod 39 is fixedly mounted on the outer wall of the guide ring 33. A first magnetic piece 310 is fixedly mounted on the top of the support rod 39. A fixing bracket 51 is fixedly mounted on the side of the fixing base 23. A second magnetic piece 52 is fixedly mounted on the bottom end of the fixing bracket 51. The magnetic poles of the first magnetic piece 310 and the second magnetic piece 52 are opposite.

[0043] In the initial state, the magnetic piece 1 310 on the guide ring 33 and the magnetic piece 2 52 on the fixed seat 23 are in an offset state. Therefore, under the action of the spring 1 34, the guide ring 33 moves away from the clamping plate 32. As the test cylinder 21 shortens, the bracket 22, the fixed seat 23 and the magnetic piece 2 52 can move, and after the movement, the magnetic piece 2 52 can be opposite to the magnetic piece 1 310, and the relative magnetic poles of the two are opposite. Therefore, under the action of the attractive magnetic force, the guide ring 33 can be driven to slide along the guide rod 31 through the support rod 39. When the fixed seat 23 continues to move upward, the magnetic piece 1 310 can be in an offset state with the magnetic piece 2 52, loosening the clamping of the steel wire. As the test cylinder 21 continues to shorten, the transmission gear 42 can be separated from the fixed rack 43. Under the action of the torsion spring 44, the rotating shaft 41, the connecting frame 45 and the pressure roller 46 can be reversed, so that the pressure roller 46 is reset and separated from the fixed seat 23 to avoid affecting the strength test of the steel wire.

[0044] The fixing unit includes two connecting rods 61 symmetrically fixedly mounted on the outer wall of the fixing seat 23, a clamping seat 62 is slidably mounted on the connecting rod 61, and a spring 63 is sleeved on the connecting rod 61 with two ends fixedly connected to the connecting rod 61 and the clamping seat 62 respectively. A fixing frame 64 is fixedly mounted on the inner wall of the support frame 12, and a connecting plate 65 is fixedly mounted on the side of the clamping seat 62. The end of the clamping seat 62 away from the connecting plate 65 is set to an arc shape that adapts to the outer wall of the fixing seat 23. A transmission block 66 is fixedly mounted on the bottom surface of the end of the connecting plate 65. The cross-sectional shape of the transmission block 66 is an isosceles trapezoid.

[0045] After the steel wire is bent, its end portion can be located between the clamping seat 62 and the fixing seat 23, and as the fixing seat 23 continues to move, the transmission block 66 can move out of the fixing frame 64. Under the action of the second spring 63, the clamping seat 62 can slide along the connecting rod 61 toward the fixing seat 23, thereby fixing the end portion of the steel wire between the clamping seat 62 and the fixing seat 23, thereby achieving a firm fixation of the steel wire. After the strength test is completed and the steel wire is fixed, when the fixing seat 23 continues to move downward, the transmission block 66 can be inserted into the fixing frame 64. When the cross-sectional shape of the transmission block 66 is an isosceles trapezoid, when the transmission block 66 is inserted into the fixed frame 64, the clamping seat 62 can be driven to slide and separate from the fixed seat 23 through the connecting plate 65. At this time, the staff can hold the steel wire, and as the fixed seat 23 continues to move, when the transmission gear 42 is separated from the fixed rack 43, the pressure roller 46 can be reversed and reset under the action of the torsion spring 44. The staff can directly remove the two sections of steel wire after the test, and continue to start the test cylinder 21 to reset it after removing the steel wire.

[0046] The inner wall of the support frame 12 is provided with a reminder unit adapted to the transmission block 66. The reminder unit includes a slide plate 71 slidably mounted on the inner wall of the fixed frame 64. An elastic airbag 72 is provided between the slide plate 71 and the inner wall of the support frame 12. A guide tube 73 is fixedly mounted on the side of the support frame 12, and the end of the guide tube 73 is connected to the elastic airbag 72. A mounting plate 74 corresponding to the guide tube 73 is fixedly mounted on the side of the support frame 12. A plurality of alarm bells 75 distributed in a circular array are provided on the bottom surface of the mounting plate 74. A shaft 711 is rotatably mounted on the bottom surface of the mounting plate 74. A knocking rod 712 adapted to the alarm bell 75 is fixedly mounted on the outer wall of the shaft 711. A transmission structure is provided between the guide tube 73 and the shaft 711.

[0047] The transmission structure includes a piston plate 76 slidably mounted on the inner wall of the conduit 73. A push rod 77 is fixedly mounted on the side of the piston plate 76. A spring 78 is sleeved on the push rod 77, and its two ends are respectively fixedly connected to the side of the piston plate 76 and the inner wall of the conduit 73. A linkage rack 79 is fixedly mounted on the end of the push rod 77 located outside the conduit 73. A linkage gear 710 meshing with the linkage rack 79 is fixedly mounted on the bottom end of the shaft 711.

[0048] During the entire strength test, before the test begins, when the transmission block 66 is separated from the fixed frame 64, the slide plate 71 can slide under the action of the elastic airbag 72, and the elastic airbag 72 can be extended. During the extension of the elastic airbag 72, the piston plate 76 can be driven to slide along the guide tube 73 under the action of air pressure, driving the push rod 77 and the linkage rack 79. When the linkage rack 79 slides, it can drive the linkage gear 710 to rotate, and synchronously drive the shaft 711 and the knocking rod 712 to rotate, thereby knocking the alarm 75 to emit a warning sound to remind the test to start. After the test is completed, when the fixing seat 23 is reset, the transmission block 66 can be inserted into the fixed frame 64 to push the slide plate 71, thereby compressing the elastic airbag 72. When the elastic airbag 72 is compressed, it can push the piston plate 76 in the opposite direction, and then can also knock the alarm 75, thereby issuing a warning sound to remind the end of the test, so that the staff can remove the tested wire and count the test data, which is more convenient to use.

[0049] The specific working principle of the present invention is as follows:

[0050] When in use, the staff first needs to cut the tire wire ring to be tested into sections for testing. After cutting, the wire can be placed in the slots 311 on the sides of the two clamping plates 32. The inner diameters of the slots 311 are different. The staff needs to place wires of different diameters in the slots 311 of corresponding sizes. After the wires are placed, the staff can start the test cylinder 21. After the two test cylinders 21 are started, they can be shortened. In the initial state, the magnetic piece 1 310 on the guide ring 33 and the magnetic piece 2 52 on the fixing seat 23 are in a staggered state, so when the wires are placed, the staff can start the test cylinder 21. Under the action of the first spring 34, the guide ring 33 moves away from the clamping plate 32. As the test cylinder 21 shortens, the bracket 22, the fixing seat 23 and the second magnetic piece 52 can move, and after the movement, the second magnetic piece 52 can be opposite to the first magnetic piece 310. The relative magnetic poles of the two are opposite. Therefore, under the action of the attractive magnetic force, the guide ring 33 can be driven by the support rod 39 to slide along the guide rod 31 to compress the first spring 34. When the guide ring 33 moves, the top plate 38 can push the rotating plate 35, so that the rotating plate 35 rotates close to the clamping plate 32 to clamp and fix the steel wire in the slot 311. The staff can then loosen the steel wire to complete the loading.

[0051] After the steel wire is clamped and fixed by the clamping plate 32 and the rotating plate 35, its two ends can be located on the sides of the two fixed seats 23. As the test cylinder 21 shortens, the fixed seat 23 continues to move, and the transmission gear 42 on its side can mesh with the fixed rack 43, thereby driving the transmission gear 42 and the rotating shaft 41 to rotate. When the rotating shaft 41 rotates, it can drive the pressure roller 46 to rotate through the connecting frame 45. During the rotation of the connecting frame 45, the pressure roller 46 can press the end of the steel wire so that the end of the steel wire is bent and fits into the outer wall of the fixed seat 23, and the corners of the fixed seat 23 are chamfered to avoid the steel wire being crushed when bent; after the steel wire is bent, its end can be located between the clamping seat 62 and the fixed seat 23, and as the fixed seat 23 continues to move When the cam 62 is in the state of being moved upward, the first magnetic piece 310 and the second magnetic piece 52 are in a staggered state, and the steel wire is loosened. At the same time, the transmission gear 42 can be separated from the fixed rack 43. Under the action of the torsion spring 44, the rotating shaft 41, the connecting frame 45 and the pressure roller 46 can be reversed, so that the pressure roller 46 is reset and separated from the fixed seat 23 to avoid affecting the strength test of the steel wire. Then, the test cylinder 21 is further shortened to start the strength test of the steel wire.

[0052] After the test is completed, the steel wire is in a broken state, and the staff can extend the two test cylinders 21. During the extension of the test cylinder 21, the transmission gear 42 can first engage with the fixed rack 43. At this time, the rotating shaft 41, the connecting frame 45 and the pressure roller 46 can rotate in the other direction, and when the pressure roller 46 rotates to the outer wall of the fixed seat 23, the broken end of the steel wire after the test can be pressed to the outer wall of the fixed seat 23 to fix the steel wire. After the steel wire is fixed, when the fixed seat 23 continues to move downward, the transmission block 66 can be inserted into the fixed frame 64, when the cross-sectional shape of the transmission block 66 is an isosceles trapezoid, when the transmission block 66 is inserted into the fixed frame 64, the clamping seat 62 can be driven to slide and separate from the fixed seat 23 through the connecting plate 65. At this time, the staff can hold the steel wire, and as the fixed seat 23 continues to move, when the transmission gear 42 is separated from the fixed rack 43, the pressure roller 46 can be reversed and reset under the action of the torsion spring 44. The staff can directly remove the two sections of steel wire after the test, and after removing the steel wire, continue to start the test cylinder 21 to reset it.

[0053] During the entire strength test, before the test begins, when the transmission block 66 is separated from the fixed frame 64, the slide plate 71 can slide under the action of the elastic airbag 72, and the elastic airbag 72 can be extended. During the extension of the elastic airbag 72, the piston plate 76 can be driven to slide along the guide tube 73 under the action of air pressure, driving the push rod 77 and the linkage rack 79. When the linkage rack 79 slides, it can drive the linkage gear 710 to rotate, and synchronously drive the shaft 711 and the knocking rod 712 to rotate, thereby knocking the alarm 75 to emit a warning sound to remind the test to start. After the test is completed, when the fixing seat 23 is reset, the transmission block 66 can be inserted into the fixed frame 64 to push the slide plate 71 to compress the elastic airbag 72. When the elastic airbag 72 is compressed, it can push the piston plate 76 in the opposite direction, and then can also knock the alarm 75, thereby issuing a warning sound to remind the end of the test, so that the staff can remove the tested wire and count the test data, which is more convenient to use.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tire bead ring strength testing device, characterized in that: It comprises a base (11), a testing unit, two sets of clamping units, two sets of wire pressing units and two sets of fixing units; The test unit includes a support frame (12) fixedly mounted on the top surface of the base (11), two test cylinders (21) are symmetrically fixedly mounted on the support frame (12), a bracket (22) is fixedly mounted on the telescopic end of the test cylinder (21), a fixing seat (23) is fixedly mounted on the inner wall of the bracket (22), the cross-sectional shape of the fixing seat (23) is set to be semicircular, and the corners of the fixing seat (23) are chamfered, and the two groups of clamping units, the wire pressing unit and the fixing unit correspond to the two fixing seats (23) respectively; The clamping unit includes a guide rod (31) fixedly mounted on the inner wall of the support frame (12), a clamping plate (32) fixedly mounted on the end of the guide rod (31), a guide ring (33) slidably mounted on the guide rod (31), a spring (34) is provided between the guide ring (33) and the clamping plate (32), a rotating plate (35) is rotatably mounted on the side of the clamping plate (32), a connecting plate (36) is fixedly mounted on the side of the rotating plate (35), a sliding groove (37) is provided on the side of the connecting plate (36), a top plate (38) is fixedly mounted on the outer wall of the guide ring (33), and the end of the top plate (38) is slidably connected to the sliding groove (37); The wire pressing unit includes a rotating shaft (41) rotatably mounted on the side of a fixed seat (23), a transmission gear (42) is fixedly sleeved on the outer wall of the rotating shaft (41), a fixed rack (43) meshing with the transmission gear (42) is fixedly mounted on the inner wall of the support frame (12), a torsion spring (44) is sleeved on the end of the rotating shaft (41), and the two ends of the torsion spring (44) are respectively fixedly connected to the rotating shaft (41) and the fixed seat (23), a connecting frame (45) is fixedly mounted on the outer wall of the rotating shaft (41), and a pressure roller (46) is rotatably sleeved on the end of the connecting frame (45), and the outer wall of the pressure roller (46) is in contact with the outer wall of the fixed seat (23); The fixing unit includes two connecting rods (61) symmetrically fixedly mounted on the outer wall of the fixing seat (23), a clamping seat (62) is slidably mounted on the connecting rod (61), a spring (63) is sleeved on the connecting rod (61), and two ends of the spring (63) are respectively fixedly connected to the connecting rod (61) and the clamping seat (62), a fixing frame (64) is fixedly mounted on the inner wall of the support frame (12), a connecting plate (65) is fixedly mounted on the side of the clamping seat (62), an end of the clamping seat (62) away from the connecting plate (65) is set to an arc shape adapted to the outer wall of the fixing seat (23), and a transmission block (66) is fixedly mounted on the bottom surface of the end of the connecting plate (65), and the cross-sectional shape of the transmission block (66) is an isosceles trapezoid.

2. A tire bead ring strength testing device according to claim 1, characterized in that: The two ends of the spring 1 (34) are respectively fixedly connected to the guide ring (33) and the clamping plate (32), and a plurality of slots (311) are provided on the side surface of the clamping plate (32).

3. A tire bead ring strength testing device according to claim 1, characterized in that: A support rod (39) is fixedly mounted on the outer wall of the guide ring (33), a magnetic piece 1 (310) is fixedly mounted on the top end of the support rod (39), a fixing frame (51) is fixedly mounted on the side of the fixing seat (23), a magnetic piece 2 (52) is fixedly mounted on the bottom end of the fixing frame (51), and the magnetic poles of the magnetic piece 1 (310) and the magnetic piece 2 (52) are opposite.

4. A tire bead ring strength testing device according to claim 1, characterized in that: The inner wall of the support frame (12) is provided with a reminder unit adapted to the transmission block (66).

5. A tire bead ring strength testing device according to claim 4, characterized in that: The reminder unit comprises a slide plate (71) slidably mounted on the inner wall of a fixed frame (64); an elastic air bag (72) is provided between the slide plate (71) and the inner wall of the support frame (12); a conduit (73) is fixedly mounted on the side of the support frame (12), and the end of the conduit (73) is communicated with the elastic air bag (72); a mounting plate (74) corresponding to the conduit (73) is fixedly mounted on the side of the support frame (12); a plurality of alarm bells (75) distributed in a circular array are provided on the bottom surface of the mounting plate (74); a shaft (711) is rotatably mounted on the bottom surface of the mounting plate (74); a knocking rod (712) adapted to the alarm bell (75) is fixedly mounted on the outer wall of the shaft (711); and a transmission structure is provided between the conduit (73) and the shaft (711).

6. A tire bead ring strength testing device according to claim 5, characterized in that: The transmission structure includes a piston plate (76) slidably mounted on the inner wall of the conduit (73), a push rod (77) fixedly mounted on the side of the piston plate (76), a spring (78) sleeved on the push rod (77) with two ends fixedly connected to the side of the piston plate (76) and the inner wall of the conduit (73), a linkage rack (79) fixedly mounted on one end of the push rod (77) located outside the conduit (73), and a linkage gear (710) meshing with the linkage rack (79) fixedly mounted on the bottom end of the shaft (711).

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