Traction rope friction liner for automobile crash test tractor

Abstract

A traction rope friction liner for an automobile crash test tractor comprises a plurality of friction lining blocks, the inner walls of the friction lining blocks can be attached to a rope wheel of the automobile crash test tractor, a plurality of parallel rope grooves are formed in the outer walls of the friction lining blocks, the four corners of each friction lining block are each provided with an inserting groove, and the inserting grooves are inserted into the rope grooves. The multiple friction lining blocks can be sequentially spliced in the circumferential direction of the rope wheel, every two adjacent friction lining blocks are connected through two insertion blocks, each insertion block comprises two insertion parts, and the two insertion parts can be correspondingly inserted into the insertion grooves in the two adjacent friction lining blocks. The two inserting parts are inserted into the inserting grooves in the two adjacent friction lining blocks, and the inserting parts cannot extend out of the inserting grooves, so that the splicing friction lining blocks cannot be affected due to the fact that the inserting parts extend out of the inserting grooves while the connection tightness between the two adjacent friction lining blocks in the same circumferential direction can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile collision test, in particular to a traction rope friction pad used for an automobile collision test traction machine. Background Art

[0002] In automobile crash tests, a traction system is generally used to drag the vehicle under test to a predetermined collision speed for collision testing. The traction system usually includes a drive motor, a pulley, a traction rope, a tractor, and a connecting rod. The tractor is fixedly connected to the vehicle under test, and the tractor is connected to the traction rope via a connecting rod. The drive motor drives the pulley to rotate, so that the traction rope drives the tractor and the vehicle under test to move synchronously. Friction pads are set on the pulley to prevent the steel rope from slipping and wearing the pulley. Currently, friction pads are mainly installed on the pulley by bonding or bolting, and each friction pad is independent of each other. Unlike the pulleys of conventional equipment such as hoists, in automobile crash tests, in order to meet the vehicle speed requirements in the crash test, the pulley of the crash test traction machine needs to run at high speed. When the fixing strength of a single friction pad decreases, it will directly affect the normal operation of the entire pulley. Utility Model Content

[0003] In order to solve the problem of inconvenience in disassembling and replacing friction pads in the prior art, the utility model provides a traction rope friction pad for a traction machine for automobile collision test, which makes the connection between two adjacent friction pads tighter.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a traction rope friction pad for a car collision test traction machine, comprising a plurality of friction linings, the inner walls of the friction linings being able to fit on the rope pulley of the car collision test traction machine, the outer walls of the friction linings being provided with a plurality of rope grooves parallel to each other, a plug-in groove being provided at each of the four corners of the friction linings, and the plug-in grooves penetrating two adjacent side walls of the friction linings, the plurality of friction linings being able to be spliced ​​in sequence along the circumferential direction of the rope pulley, and two adjacent friction linings being connected by two plug-in blocks, the plug-in block comprising two plug-in portions, and the two plug-in portions being able to be correspondingly inserted into the plug-in grooves on the two adjacent friction linings.

[0005] As a further optimization of the traction rope friction pad of a traction machine for automobile collision test, the utility model provides two grooves on the surface of the plug-in block, and after the two plug-in parts of the plug-in block are correspondingly inserted into the plug-in grooves on the two adjacent friction pads, the two grooves face the outside of the plug-in grooves.

[0006] As a further optimization of the utility model of a traction rope friction pad for a traction machine for automobile collision test: a pulling block is provided on the plug-in block.

[0007] As a further optimization of the utility model, a traction rope friction pad for a traction machine for automobile collision test is provided: a pulling hole is provided on the pulling block.

[0008] As a further optimization of the traction rope friction pad of the traction machine for automobile collision test, the plug-in slot includes an expansion portion, and the part of the plug-in block that contacts the contact surface is provided with a corresponding expansion portion.

[0009] As a utility model, a further optimization of the traction rope friction pad of a traction machine for automobile collision test is provided: all the friction pads are evenly divided into multiple groups, each group of friction pads is distributed along the circumferential direction of the pulley, and multiple groups of friction pads are distributed along the axial direction of the pulley. Connecting through holes extending along the axial direction of the pulley are provided on the friction pads, and adjacent groups of friction pads are connected by connecting screws, which are passed through the connecting through holes on the friction pads of adjacent groups in turn.

[0010] As a further optimization of the utility model, a traction rope friction pad for a traction machine for automobile collision test is provided: the surface of the plug-in block is provided with a friction layer.

[0011] As a further optimization of a traction rope friction pad for a car collision test traction machine, the utility model provides: the inner wall of the friction pad is provided with a connecting groove, which extends along the axial direction of the pulley. When the inner wall of the friction pad is attached to the pulley of the car collision test traction machine, the connecting strip on the surface of the hoist drum is located in the connecting groove.

[0012] Beneficial Effects: The friction lining of the present invention has a splicing groove at each of its four corners, and the splicing groove passes through two adjacent side walls of the friction lining. Multiple friction linings can be spliced ​​sequentially along the circumferential direction of the rope pulley, and two adjacent friction linings are connected by two splicing blocks. The splicing blocks include two splicing parts, and the two splicing parts can be correspondingly inserted into the splicing grooves of the two adjacent friction linings. The two splicing parts are inserted into the splicing grooves of the two adjacent friction linings without protruding out of the splicing grooves. This ensures the tight connection between adjacent friction linings in the same circumferential direction while preventing the splicing of the friction linings from being affected by the splicing parts protruding out of the splicing grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the combination of the utility model;

[0015] Figure 3 It is a schematic diagram of a first embodiment of the plug-in block;

[0016] Figure 4 is a schematic diagram of a second embodiment of the plug-in block;

[0017] Figure 5 This is the main view of the utility model;

[0018] Markings in the figure: 1. Friction lining, 101. First side wall, 102. Second side wall, 103. First end face, 104. Second end face, 105. Inner wall, 106. Outer wall, 2. Connecting groove, 3. Rope groove, 4. Connecting groove, 5. Connecting through hole, 6. Connecting block, 601. Enlarged portion, 602. Groove, 603. Pulling block, 604. Pulling hole. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of the present invention should be understood as existing technologies known or should be known to those skilled in the art, such as the specific structure and model of the tractor, the principles of automobile collision testing, etc.

[0020] Example 1

[0021] A traction rope friction pad for a car crash test traction machine, such as Figure 1 、 Figure 2 and Figure 5As shown, it includes multiple friction linings 1, the inner wall 105 of the friction lining 1 can be fitted on the pulley of the automobile collision test traction machine, and a plurality of rope grooves 3 parallel to each other are provided on the outer wall 106 of the friction lining 1. A plug-in slot 2 is provided at each of the four corners of the friction lining 1, and the plug-in slot 2 passes through two adjacent side walls of the friction lining 1. The side walls of the friction lining 1 are respectively the first side wall 101 and the second side wall 102. Here, the two adjacent side walls refer to the first side wall 101 of a friction lining 1 and the second side wall 102 of the adjacent friction lining 1. The plug-in slot 2 is provided on the first side wall 101 and the second side wall 102 of the friction lining 1 and passes through these two side walls. Among the four plug-in slots 2, the two plug-in slots 2 close to the first end face 103 of the friction lining 1 can pass through to the first end face 103, and the two plug-in slots 2 close to the second end face 104 of the four plug-in slots 2 can pass through to the second end face 104. Multiple friction linings 1 can be spliced ​​in sequence along the circumferential direction of the rope pulley, and two adjacent friction linings 1 are connected by two plug-in blocks 6. The plug-in blocks 6 include two plug-in parts, and the two plug-in parts can be correspondingly inserted into the plug-in grooves 2 on the two adjacent friction linings 1. The two plug-in parts are inserted into the plug-in grooves 2 on the two adjacent friction linings 1, and the plug-in parts will not extend out of the plug-in grooves 2. This can ensure the tightness of the connection between the adjacent friction linings 1 in the same circumferential direction, while not affecting the spliced ​​friction linings 1 due to the plug-in parts extending out of the plug-in grooves 2. Once one or more friction linings 1 are damaged and need to be replaced, the plug-in blocks 6 at the corresponding parts can be directly removed, and then the damaged friction linings 1 can be removed. In order to enhance the stability of the plug-in block 6 in the plug-in groove 2, a friction layer is provided on the surface of the plug-in block 6.

[0022] The above is a basic implementation of the present invention, which can be further improved, optimized and limited to obtain the following embodiments:

[0023] Example 2

[0024] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 3 As shown, since the plug-in block 6 is inserted into the plug-in slot 2 and will not extend out of the plug-in slot 2, in order to make it more convenient to remove the plug-in block 6, two grooves 602 are provided on the surface of the plug-in block 6. After the two plug-in parts of the plug-in block 6 are correspondingly inserted into the plug-in slots 2 on the two adjacent friction linings 1, the two grooves 602 face the outside of the plug-in slot 2, so that the operator can insert his fingers into the two grooves 602 to clamp the plug-in block 6.

[0025] Example 3

[0026] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 4 As shown, in addition to the two grooves 602 provided on the surface of the plug-in block 6, a pull-out block 603 may also be provided on the plug-in block 6. After the plug-in block 6 enters the two insertion slots 2 of the adjacent friction lining 1, the surface of the pull-out block 603 is flush with the insertion slots 2 and does not protrude therefrom, thus not affecting the connection of the friction lining 1. The pull-out block 603 is provided with a pulling hole 604, which allows the operator to better grasp the pull-out block 603 and pull the entire plug-in block 6 out of the insertion slot 2.

[0027] Example 4

[0028] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figures 1-4 As shown, the insertion slot 2 and the insertion block 6 need to fit tightly together, otherwise the connection between the two adjacent friction pads 1 will be affected. Therefore, the insertion slot 2 includes an expansion portion, and the portion of the insertion block 6 that contacts the contact surface is provided with a corresponding expansion portion 601. The expansion portion located on the first side wall 101 of the friction pad 1 gradually increases in size along the direction from the first side wall 101 to the second side wall 102, while the expansion portion located on the second side wall 102 of the friction pad 1 gradually increases in size along the direction from the second side wall 102 to the first side wall 101. This allows the insertion block 6 to be removed only radially from the pulley after being inserted into two adjacent insertion slots 2. The expansion portion of the friction pad 1 is arc-shaped, and the expansion portion 601 also has a matching arc-shaped surface. This ensures that even if the edge of the insertion block 6 does not properly align with the inner wall 105 of the insertion slot 2 after being inserted into the two adjacent insertion slots 2, the arc-shaped expansion portion and the arc-shaped expansion portion 601 can still cooperate well.

[0029] Example 5

[0030] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 1 and Figure 2 As shown, all the friction linings 1 are evenly divided into multiple groups, with each group of friction linings 1 distributed along the circumferential direction of the rope pulley. Multiple groups of friction linings 1 are distributed along the axial direction of the rope pulley. The friction linings 1 are provided with connecting through-holes 5 extending along the axial direction of the rope pulley. In order to strengthen the fit between adjacent groups of friction linings 1, the adjacent groups of friction linings 1 are connected by connecting screws, which are sequentially inserted into the connecting through-holes 5 on the adjacent groups of friction linings 1. It is important to note that the connecting screws cannot extend out of the connecting through-holes 5 on the adjacent groups of friction linings 1 and must be completely located inside the connecting through-holes 5 on the adjacent groups of friction linings 1. Otherwise, the installation of the adjacent groups of friction linings 1 will be affected.

[0031] Example 6

[0032] This embodiment is an improvement on the embodiment 1. Its main structure is the same as that of the embodiment 1. The improvement is as follows: Figure 1 and Figure 2 As shown, the inner wall 105 of the friction lining 1 is provided with a connecting groove 4, which extends along the axial direction of the sheave. When the inner wall 105 of the friction lining 1 is attached to the sheave of the automobile collision test traction machine, the connecting strip on the surface of the hoist drum is located in the connecting groove 4, further ensuring the tightness of the fit between the friction lining 1 and the sheave.

[0033] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A traction rope friction pad for a traction machine for automobile collision testing, characterized by: The invention comprises a plurality of friction pads (1), wherein the inner wall (105) of the friction pad (1) can be fitted on the rope pulley of the automobile collision test traction machine, and a plurality of rope grooves (3) are provided on the outer wall (106) of the friction pad (1). A plug-in groove (2) is provided at each of the four corners of the friction pad (1), and the plug-in groove (2) passes through two adjacent side walls of the friction pad (1). The plurality of friction pads (1) can be spliced ​​in sequence along the circumferential direction of the rope pulley, and two adjacent friction pads (1) are connected via two plug-in blocks (6). The plug-in block (6) comprises two plug-in parts, and the two plug-in parts can be correspondingly inserted into the plug-in grooves (2) on the two adjacent friction pads (1).

2. The traction rope friction pad for a traction machine for automobile collision testing according to claim 1, characterized in that: Two grooves (602) are provided on the surface of the plug-in block (6); after the two plug-in portions of the plug-in block (6) are correspondingly inserted into the plug-in grooves (2) on two adjacent friction linings (1), the two grooves (602) face the outside of the plug-in grooves (2).

3. The traction rope friction pad for a traction machine for automobile collision testing according to claim 1, characterized in that: A pulling block (603) is provided on the plug-in block (6), and after the two plug-in parts of the plug-in block (6) are correspondingly inserted into the plug-in slots (2) on two adjacent friction linings (1), the pulling block (603) is located in the plug-in slots (2).

4. The traction rope friction pad for a traction machine for automobile collision testing according to claim 3, characterized in that: A drawing hole (604) is provided on the drawing block (603).

5. The traction rope friction pad for a traction machine for automobile collision testing according to claim 1, characterized in that: The plug-in slot (2) comprises an expansion portion, and the portion of the plug-in block (6) that contacts the contact surface is provided with a corresponding expansion portion (601).

6. The traction rope friction pad for a traction machine for automobile collision testing according to claim 1, characterized in that: The surface of the plug-in block (6) is provided with a friction layer.

7. The traction rope friction pad for a traction machine for automobile collision testing according to claim 1, characterized in that: The inner wall (105) of the friction lining (1) is provided with a connecting groove (4), which extends along the axial direction of the rope pulley. When the inner wall (105) of the friction lining (1) is attached to the rope pulley of the automobile collision test traction machine, the connecting strip on the surface of the hoist drum is located in the connecting groove (4).

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