Friction liner for automobile test equipment

Abstract

The utility model belongs to the technical field of friction liners, and discloses a friction liner for automobile test equipment, which comprises a plurality of liner bodies which are annularly distributed at the outer diameter of a roller device of the automobile test equipment, each liner body is of an arc-shaped structure, and rope grooves with arc-shaped sections are uniformly arranged on the upper surface of each liner body at intervals. A convex surface with a rectangular cross section is formed between every two adjacent rope grooves, the rope grooves are smoothly connected with the convex surfaces to form a concave upper surface and a convex upper surface, the upper surface and the lower surface of the gasket body are both of an arc-shaped structure, and the lower surface of the gasket body is a smooth arc surface with the same radian as the upper surface. The two end faces of the gasket body are symmetrically arranged relative to the center of the gasket body, the positioning grooves penetrating through the two end faces are formed in the centers of the end faces of the gasket body, the U-shaped grooves are formed in the intersecting positions of the two end faces and the two side faces of the gasket body respectively, positioning on a roller is conducted through the positioning grooves, the maintenance time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of friction pad technology, specifically relating to a friction pad for automotive testing equipment. Background Technology

[0002] Friction pads for automotive testing equipment are designed to ensure the accuracy and safety of the testing process. These friction pads play an important role in various testing equipment. For example, in automotive crash testing, rollers serve as the core of the traction system. Steel cables are wound around the rollers and connect the vehicle to the traction system. The steel cables are driven by a motor or hydraulic system to transmit tension and guide the vehicle's trajectory, accelerating the vehicle to a preset speed. Alternatively, the traction force can be adjusted by rotating the rollers to ensure that the vehicle reaches the target speed, angle, and trajectory for impact. The rollers and steel cables ensure the repeatability and accuracy of the crash test data, providing a reliable basis for vehicle safety assessment.

[0003] In existing technologies, friction pads are usually not placed between the wire rope and the drum. Most testing systems rely on the self-locking reaction generated by the multiple layers of tight winding of the wire rope on the drum. The tension is transmitted through static friction between ropes and between the rope and the drum. The surface of the drum is mostly smooth steel or has shallow textures (such as spiral positioning grooves) to increase the contact area. However, if the test requires extremely high acceleration or frequent start and stop, the surface of the drum wears quickly and the wire rope is also damaged. Therefore, it is necessary to add friction pads and increase the coefficient of friction to prevent the safety hazards caused by the slippage of the wire rope during friction, so that the test cannot continue. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a friction pad for automotive testing equipment. It has a simple structure and is easy to replace. The pad body is fixed to the roller through the positioning groove on the pad body. The U-shaped hole on the pad body is used for the shaft end fixing connection when connecting two adjacent pad bodies, which greatly facilitates the installation and disassembly of the pad body on the roller device.

[0005] The technical solution adopted by this utility model is as follows: a friction pad for automotive testing equipment, comprising multiple pad bodies arranged in a ring around the outer diameter of the roller device of the automotive testing equipment. The pad body has an arc-shaped structure. The upper surface of the pad body is evenly provided with rope grooves with an arc-shaped cross-section. The rope grooves and adjacent rope grooves form a raised surface with a Z-shaped cross-section. The rope grooves and the raised surface are smoothly connected to form a concave-convex upper surface. The upper and lower surfaces of the pad body are both arc-shaped structures. The lower surface of the pad body is a smooth arc surface with the same curvature as the upper surface. The arc axes of the upper and lower surfaces of the pad body coincide with each other. The two end faces of the pad body are symmetrically arranged with respect to the center of the pad body. A positioning groove penetrating the two end faces is provided at the center of the end face of the pad body.

[0006] Specifically, each end face of the pad body is provided with a U-shaped groove at the intersection of its two end faces and two side faces.

[0007] Specifically, the pad body has three rope grooves, and two round holes are symmetrically arranged on the left and right sides of the positioning groove on the end face of the pad body. The two round holes are used to connect the two pad bodies by bolts.

[0008] Specifically, the positioning groove on the end face of the liner body matches the protrusion on the roller device of the automotive testing equipment, and is used to position the liner body on the roller of the automotive testing equipment.

[0009] Specifically, the round holes on the two pad bodies are connected by bolts to form a six-groove pad with six rope grooves. The U-shaped grooves on the sides of the two adjacent six-groove pads form waist-shaped holes on the roller device. Waist-shaped gaskets are set on the waist-shaped holes for the fixed connection of the pad bodies at the shaft end.

[0010] Specifically, the material of the pad body is a resin-based friction material.

[0011] The beneficial effects of this utility model are: (1) This utility model has a simple structure and is easy to replace. The pad body is fixed on the roller through the positioning groove of the pad body. The round hole on the pad body can be used for the connection between adjacent pads through bolts. The pad body is fixed on the roller. When replacing, it can be replaced by removing the bolts, which reduces maintenance time and improves work efficiency.

[0012] (2) Two pad bodies are connected by bolts to form a six-groove pad. The U-shaped groove of the six-groove pad forms a waist-shaped hole on the roller device. Waist-shaped gaskets are set on the waist-shaped hole for the fixed connection of the pad body at the shaft end, which strengthens the fixing force of the pad body on the roller, prevents the steel cable from slipping on the pad body, and helps to extend the service life of the pad and improve the safety factor during the operation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention installed on a drum;

[0014] Figure 2 This is an exploded view of the present invention installed on a drum;

[0015] Figure 3 This is a three-dimensional structural diagram of the pad body of this utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the six-groove liner spliced ​​according to this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of Example 2;

[0018] The markings in the diagram are: 1. Roller assembly; 2. Pad body; 21. Six-groove pad; 22. Pad body without round hole; 3. Rope groove; 4. Raised surface; 5. Positioning groove; 6. U-shaped groove; 7. Round hole; 8. Protrusion; 9. Waist-shaped gasket. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1, as Figure 1-4 As shown, a friction pad for automotive testing equipment includes multiple pad bodies 2 arranged in a ring around the outer diameter of a roller device 1 of the automotive testing equipment. The pad bodies 2 have an arc-shaped structure. The upper surface of the pad body 2 is evenly provided with rope grooves 3 with an arc-shaped cross-section. The rope grooves 3 and adjacent rope grooves 3 form a raised surface 4 with a Z-shaped cross-section. The rope grooves 3 and the raised surface 4 are smoothly connected to form a concave-convex upper surface. The upper and lower surfaces of the pad body 2 are both arc-shaped structures. The lower surface of the pad body 2 is a smooth arc surface with the same curvature as the upper surface. The arc axes of the upper and lower surfaces of the pad body 2 coincide with each other. The two end faces of the pad body 2 are symmetrically arranged with respect to the center of the pad body. A positioning groove 5 penetrating the two end faces is provided at the center of the end face of the pad body 2.

[0021] Preferably, each of the two end faces and the two side faces of the pad body 2 is provided with a U-shaped groove 6.

[0022] Preferably, the pad body 2 has three rope grooves 3, and two round holes 7 are symmetrically arranged on the left and right sides of the positioning groove 5 on the end face of the pad body. The two round holes 7 are used to connect the two pad bodies 2 by bolts.

[0023] Preferably, the positioning groove 5 on the end face of the pad body 2 matches the protrusion 8 on the roller device 1 of the automotive testing equipment, for positioning the pad body 2 on the roller device 1 of the automotive testing equipment.

[0024] Preferably, the two pad bodies 2 are bolted together to form a six-groove pad 21 with six rope grooves. The U-shaped grooves 6 on the sides of two adjacent six-groove pads 21 form waist-shaped holes on the roller device 1. Waist-shaped gaskets 9 are provided on the waist-shaped holes for the fixed connection of the pad bodies 2 at the shaft end.

[0025] Preferably, the material of the pad body 2 is a resin-based friction material.

[0026] In operation, different pads are selected according to the magnitude of the tensile force used in the automotive testing equipment. When the tensile force is large, pad body 2 is selected. The positioning groove 5 on the end face of pad body 2 matches the protrusion 8 on the roller device 1 of the automotive testing equipment for positioning pad body 2 on the roller device 1. Two pad bodies 2 are connected by bolts to form a six-groove pad 21 with six rope grooves. Three six-groove pads 21 are installed in a ring on the outer diameter of the roller device of the automotive testing equipment. The U-shaped grooves 6 on the sides of two adjacent six-groove pads 21 form waist-shaped holes on the roller device 1. Waist-shaped washers 9 are set on the waist-shaped holes for fixing pad body 2 to the shaft end. The pad is fixed to the roller by the waist-shaped washers and positioning grooves 5. Alternatively, the pad body 2 can be fixed to the bearing end cap on the roller through the round holes 7 on the pad body 2 to strengthen the fixing force of the pad.

[0027] When the gasket needs to be replaced, reverse the above steps, remove the bolts and 9 waist-shaped gaskets to replace it. The use of friction gaskets reduces the maintenance time of automotive testing equipment and improves work efficiency. It ensures that the friction gasket can withstand multiple testing processes in high or low temperature environments. The friction gasket has excellent friction performance and can protect the cylinder shell, thus extending the life of the wire rope.

[0028] Example 2, as Figure 5 As shown, unlike the first specific embodiment, the required pads vary depending on the tensile strength of the test. In the test with lower tensile strength, the pad body 2 is a pad body 22 without round holes, that is, there are no two round holes 7 on the left and right sides of the positioning groove 5 on the end face of the pad body 2. The two pad bodies 22 without round holes match the protrusions 8 on the roller device 1 of the automotive testing equipment through the positioning groove 5 for positioning the pad bodies 22 without round holes on the roller device 1 of the automotive testing equipment. The three pad bodies 22 without round holes are installed in a ring on the outer diameter of the roller device 1 of the automotive testing equipment. The U-shaped grooves 6 of the three pad bodies 22 without round holes form three waist-shaped holes on the circumference. Waist-shaped gaskets 9 are set on the waist-shaped holes for fixing the pad bodies 22 without round holes to the shaft end. The pad bodies 22 without round holes are fixed on the roller device 1 of the automotive testing equipment through the waist-shaped gaskets 9 and the positioning grooves 5.

[0029] When it is necessary to replace the non-perforated gasket body 22, reverse the above steps, remove the waist-shaped gasket 9 and the fixing of the positioning groove 5, and then the replacement can be performed.

Claims

1. A friction pad for automotive test equipment, characterised in that: The application relates to a rubber pad body (2) which is arranged in a ring shape at the outer diameter of a roller device (1) of an automobile testing device, wherein the rubber pad body (2) is in a circular arc structure, the upper surface of the rubber pad body (2) is uniformly provided with rope grooves (3) in a circular arc shape, the rope grooves (3) and adjacent rope grooves (3) form convex surfaces (4) in a U shape, the rope grooves (3) and the convex surfaces (4) are smoothly connected and form a concave-convex upper surface, the upper surface and the lower surface of the rubber pad body (2) are in a circular arc structure, the lower surface of the rubber pad body (2) is a smooth circular arc surface with the same curvature as the upper surface, the circular arc axes of the upper surface and the lower surface of the rubber pad body (2) coincide with each other, the two end surfaces of the rubber pad body (2) are symmetrically arranged relative to the center of the rubber pad body (2), and a positioning groove (5) penetrating the two end surfaces is arranged at the center position of the end surface of the rubber pad body (2).

2. A friction pad for a vehicle testing apparatus as claimed in claim 1, wherein: U-shaped grooves (6) are arranged at the intersections of the two end surfaces and the two side surfaces of the rubber pad body (2).

3. A friction pad for a vehicle testing apparatus as claimed in claim 2, wherein: The number of the rope grooves (3) of the rubber pad body (2) is three, two circular holes (7) are symmetrically arranged on the left and right sides of the positioning groove (5) of the end surface of the rubber pad body (2), and the two circular holes (7) are used for connecting two rubber pad bodies (2) through bolts.

4. A friction pad for a vehicle testing apparatus according to any one of claims 1 to 3, characterised in that: The positioning groove (5) on the end surface of the rubber pad body (2) is matched with a convex block (8) on the roller device (1) of the automobile testing device, and is used for positioning the rubber pad body (2) on the roller device (1) of the automobile testing device.

5. A friction pad for a vehicle testing apparatus as claimed in claim 4, wherein: The circular holes (7) on the two rubber pad bodies (2) are connected through bolts to form a six-groove rubber pad (21) with six rope grooves (3), the U-shaped grooves (6) on the side surfaces of the adjacent two six-groove rubber pads (21) form a waist-shaped hole on the roller device (1), a waist-shaped gasket (9) is arranged on the waist-shaped hole, and the rubber pad body (2) is fixedly connected at the shaft end.

6. A friction pad for a vehicle testing apparatus as claimed in claim 5, wherein: The material of the rubber pad body (2) is resin-based friction material.

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