A clamp for tensile testing of all-steel radial tires

Abstract

A clamp for tensile testing of all-steel radial tires, relating to the field of tire testing technology, includes a base. A lower clamp is located at the center of the top surface of the base. Symmetrical upright plates are arranged on both sides of the lower clamp. A lifting plate is located between the two upright plates. An upper clamp is located at the center of the bottom surface of the lifting plate. The lifting plate is driven by a power mechanism to achieve lifting and lowering. The upper and lower clamps have identical structures, both including a U-shaped fixed base. A threaded rod is provided on the fixed base, and a handwheel is provided at one end of the threaded rod. A left clamping plate and a right clamping plate are threaded onto the threaded rod located within the U-shaped fixed base. The left and right clamping plates cooperate to achieve clamping. The distance between the left and right clamping plates can be adjusted by rotating the handwheel to accommodate steel cords of different thicknesses. This clamp has a simple structure, is easy to install, and has high practicality.

Description

Technical Field

[0001] This utility model relates to the field of tire testing technology, specifically to a fixture for tensile testing of all-steel radial tires. Background Technology

[0002] Radial tires are mainly divided into all-steel radial tires, semi-steel radial tires, and all-fiber radial tires. All-steel radial tires use steel cords in both the carcass and belt layers. Steel cords have high tensile strength and toughness, enhancing the overall strength of the tire and improving its resistance to external impacts and wear, thus extending its service life. Tensile testing is one of the important methods for evaluating the performance of all-steel radial tires. Through testing, key parameters such as tensile strength, elongation, and modulus of elasticity at break can be determined. These parameters are crucial for ensuring the safety and reliability of the tire.

[0003] Currently, some clamps used in tensile testing cannot be adjusted according to the thickness of the steel cord, and the thickness of the steel cord varies among different types of tires. Therefore, there is an urgent need for a clamp that can adjust the clamping tightness to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a fixture for tensile testing of all-steel radial tires, which can solve the technical problem that the existing fixtures cannot be adjusted according to the thickness of the steel cord.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fixture for tensile testing of all-steel radial tires includes a base, a lower clamp at the center of the top surface of the base, upright plates symmetrically arranged on both sides of the lower clamp, a lifting plate between the two upright plates, an upper clamp at the center of the bottom surface of the lifting plate, and the lifting plate being driven to lift by a power mechanism.

[0007] The upper and lower clamps have the same structure, both including a U-shaped fixed base. The fixed base is provided with a threaded rod, and a handwheel is provided at one end of the threaded rod. A left clamping plate and a right clamping plate are threadedly connected to the threaded rod located in the U-shaped fixed base. The left clamping plate and the right clamping plate cooperate to achieve clamping.

[0008] Preferably, the opposite sides of the left and right clips are decorated with patterns.

[0009] Preferably, a sliding groove is provided at the bottom of the fixing base, and sliders are provided at the bottom of both the left and right clamps, with both sliders slidably connected in the sliding groove.

[0010] Preferably, the power mechanism includes a second threaded rod, which is rotatably connected to the top of two upright plates. One end of the second threaded rod is provided with a hand crank. The second threaded rod, located between the two upright plates, is threaded with a first threaded sleeve and a second threaded sleeve. Both the first threaded sleeve and the second threaded sleeve are connected to the lifting plate through a hinged rod.

[0011] Preferably, guide grooves are provided on opposite sides of the two upright plates, and the two ends of the lifting plate are slidably connected in the two guide grooves respectively.

[0012] Compared with the prior art, the advantages of this utility model are as follows: The clamp of this utility model includes a fixed base, a threaded rod, a left clamping plate, a right clamping plate, a handwheel, a sliding groove, and a slider. The distance between the left and right clamping plates can be adjusted by rotating the handwheel to accommodate steel wire cords of different thicknesses. This clamp has a simple structure, is easy to install, and has high practicality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1-Base, 2-Upright plate, 3-Lifting plate, 4-Fixed seat, 5-Threaded rod one, 6-Handwheel, 7-Left clamp, 8-Right clamp, 9-Pattern, 10-Slide groove, 11-Slider, 12-Threaded rod two, 13-Hand crank, 14-Threaded sleeve one, 15-Threaded sleeve two, 16-Hinge rod, 17-Guide groove. Detailed Implementation

[0017] The invention will now be described in detail with reference to the accompanying drawings, by way of example. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Example

[0018] like Figure 1As shown, this utility model discloses a clamp for tensile testing of all-steel radial tires, including a base 1. A lower clamp is provided at the center of the top surface of the base 1. Vertical plates 2 are symmetrically provided on both sides of the lower clamp. A lifting plate 3 is provided between the two vertical plates 2. An upper clamp is provided at the center of the bottom surface of the lifting plate 3. The upper clamp and the lower clamp have the same structure, both including a U-shaped fixed seat 4. A threaded rod 5 is provided on the fixed seat 4. A handwheel 6 is provided at one end of the threaded rod 5. A left clamping piece 7 and a right clamping piece 8 are threadedly connected to the threaded rod 5 located in the U-shaped fixed seat 4. The opposite sides of the left clamping piece 7 and the right clamping piece 8 are provided with a pattern 9. The pattern 9 adopts a straight line or a wave pattern to increase friction. The left clamping piece 7 and the right clamping piece 8 cooperate to achieve clamping. A sliding groove 10 is opened in the bottom of the fixed seat 4. A slider 11 is provided at the bottom of the left clamping piece 7 and the right clamping piece 8. The two sliders 11 are slidably connected in the sliding groove 10. The clamp of this utility model can adjust the distance between the left clamp 7 and the right clamp 8 by rotating the handwheel 6, so as to be suitable for clamping steel wire cords of different thicknesses, and has high practicality.

[0019] The lifting plate 3 is driven to rise and fall by a power mechanism. The power mechanism includes a threaded rod 12, which is rotatably connected to the top of the two upright plates 2. One end of the threaded rod 12 is equipped with a hand crank 13. Threaded sleeves 14 and 15 are threadedly connected to the threaded rod 12 located between the two upright plates 2. Both threaded sleeves 14 and 15 are connected to the lifting plate 3 via hinged rods 16. By rotating the hand crank 13, the threaded rod 12 is rotated, causing the threaded sleeves 14 and 15 to move in opposite directions, thereby driving the lifting plate 3 to move up and down, thus enabling tensile testing of the steel wire cord.

[0020] In order to enable the lifting plate 3 to move vertically and ensure the coaxiality of the upper and lower clamps, guide grooves 17 are provided on the opposite sides of the two vertical plates 2, and the two ends of the lifting plate 3 are slidably connected in the two guide grooves 17 respectively.

[0021] Working principle: When in use, first adjust the distance between the left clamp 7 and the right clamp 8 according to the thickness of the steel wire cord, place the steel wire cord in the upper clamp and the lower clamp, and adjust the clamping degree; then turn the hand crank 13 so that the threaded sleeve 14 and the threaded sleeve 2 15 move in opposite directions. At this time, the hinge rod 16 will pull the lifting plate 3 to move upward along the guide groove 17 to realize the tensile test.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and application concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixture for tensile testing of all-steel radial tires, comprising a base (1), characterized in that: The base (1) has a lower clamp at the center of its top surface, and upright plates (2) are symmetrically arranged on both sides of the lower clamp. A lifting plate (3) is arranged between the two upright plates (2). An upper clamp is arranged at the center of the bottom surface of the lifting plate (3). The lifting plate (3) is driven to lift by a power mechanism. The upper clamp and the lower clamp have the same structure, both including a U-shaped fixed seat (4). The fixed seat (4) is provided with a threaded rod (5). One end of the threaded rod (5) is provided with a handwheel (6). The threaded rod (5) located in the U-shaped fixed seat (4) is threaded with a left clamping piece (7) and a right clamping piece (8). The left clamping piece (7) and the right clamping piece (8) cooperate to achieve clamping.

2. The fixture for tensile testing of all-steel radial tires as described in claim 1, characterized in that: The left clip (7) and the right clip (8) are both provided with patterns (9) on their opposite sides.

3. The fixture for tensile testing of all-steel radial tires as described in claim 1, characterized in that: The bottom of the fixed base (4) is provided with a sliding groove (10), and the bottom of the left clamp (7) and the right clamp (8) are provided with sliders (11), and the two sliders (11) are slidably connected in the sliding groove (10).

4. The fixture for tensile testing of all-steel radial tires as described in claim 1, characterized in that: The power mechanism includes a threaded rod (12), which is rotatably connected to the top of two vertical plates (2). One end of the threaded rod (12) is provided with a hand crank (13). The threaded rod (12) located between the two vertical plates (2) is threaded with a threaded sleeve (14) and a threaded sleeve (15). Both the threaded sleeve (14) and the threaded sleeve (15) are connected to the lifting plate (3) through a hinge rod (16).

5. The fixture for tensile testing of all-steel radial tires as described in claim 1, characterized in that: Guide grooves (17) are provided on one side of each of the two upright plates (2), and the two ends of the lifting plate (3) are slidably connected in the two guide grooves (17).

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