Wear-resistant block for aluminum-based track shoe of tank vehicle and track shoe of wear-resistant block

Abstract

The utility model relates to a wear-resistant block for an aluminum-based track shoe of a tank vehicle and the track shoe, and the wear-resistant block applied to the aluminum-based track shoe of the tank vehicle is used for being arranged in a landing tooth of the track shoe and is characterized by comprising a wear-resistant main body, two opposite wall surfaces of the wear-resistant main body are inclined surfaces which gradually incline towards each other from top to bottom, and at least two opposite wall surfaces of the wear-resistant main body are provided with limiting grooves which are restrained with a track shoe. The wear-resistant main body is prevented from being separated from the track shoe, and the wear resistance of the subsequent track shoe is improved due to the arrangement of the wear-resistant main body.

Description

Technical Field

[0001] The utility model relates to a wear-resistant block structure, in particular to a wear-resistant block used for an aluminum-based track plate of a tank vehicle and the track plate thereof. Background Art

[0002] Tracked tanks have the advantages of low pressure on ground units, good off-road performance, strong ability to overcome obstacles, powerful firepower and thick armor, and high-power engines and transmissions. They have been widely used in various actual combat environments such as fields and streets. Tracks are one of the main components of the tracked tank vehicle's motion system. Traditional tracks generally use a specific gravity of 7.8g / cm 3 The weight of steel materials such as high manganese steel or alloy steel accounts for about 10% of the total weight of tanks. Under the conditions of modern information warfare, lightweight tanks have become a development trend. Using lightweight materials such as aluminum alloys or titanium alloys to replace steel to manufacture tank parts such as track plates is an important way to achieve lightweight tanks.

[0003] During the driving process of tank vehicles, the track shoe ground teeth are in direct contact with the ground and are in a friction and wear condition for a long time. Therefore, this part needs to have a higher hardness and better wear resistance. However, due to the low hardness of lightweight materials such as aluminum alloy and titanium alloy, the wear resistance cannot meet the requirements. Therefore, in order to solve the problems of lightweight track shoes and ground teeth wear resistance at the same time, wear-resistant blocks made of high manganese steel or alloy steel are usually partially cast in the ground teeth of aluminum alloy track shoes. The problems that follow are: 1. Steel wear-resistant blocks and aluminum alloys are dissimilar materials, and the interface bonding method is physical bonding, and the interface bonding strength is low. After the aluminum alloy coated on the outside of the wear-resistant block is worn during vehicle driving, it is easy for the wear-resistant block to fall off; 2. Accurate positioning of the wear-resistant block. If the wear-resistant block is not accurately positioned, the thickness of the aluminum matrix coated around it is inconsistent. After the aluminum matrix on the side with a smaller thickness is worn, the wear-resistant block will also fall off.

[0004] Therefore, in order to solve the above problems, it is necessary to design a wear-resistant block structure that can accurately position and prevent falling off. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a wear-resistant block for the aluminum-based track plate of a tank vehicle, which can be accurately positioned and prevented from falling off, in view of the current status of the above-mentioned prior art.

[0006] The second technical problem to be solved by the utility model is to provide an aluminum-based track plate using the above-mentioned wear-resistant block.

[0007] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: a wear-resistant block for an aluminum-based track plate of a tank vehicle, which is used to be set in the ground-contacting teeth of the track plate, and is characterized in that it includes a wear-resistant main body, and the two relative wall surfaces of the wear-resistant main body are both inclined surfaces that gradually incline toward each other from top to bottom, and the wear-resistant main body is provided with limiting grooves constrained by the ground-contacting teeth on at least two relative wall surfaces.

[0008] The wear-resistant main body 1 is made of TiC-based high manganese steel-bonded hard alloy with a hardness (HRC) of 60-65.

[0009] Preferably, in order to prevent the wear-resistant body from falling off the track shoe, each wall surface has the above-mentioned limiting groove.

[0010] Preferably, the limiting groove is located near the center of the corresponding wall surface.

[0011] Preferably, the top corners of the wear-resistant body are all rounded. The rounded corner design prevents stress concentration from occurring during the subsequent casting process, thereby achieving a good casting effect.

[0012] Preferably, the angle α formed by the inclined surface and the vertical surface is 5° to 10°.

[0013] A positioning block is provided on the bottom wall plate of the wear-resistant body, and the positioning block is used to limit the position on the top rod in the mold for forming the track shoe. The positioning block adopts a relatively simple and easy-to-process shape, and is processed with a positioning accuracy of ±0.1mm by ordinary steel through conventional mechanical processing means. After being connected to the wear-resistant body by welding, it is used to limit the position on the top rod in the mold for forming the track shoe.

[0014] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a track plate, including an aluminum substrate and a wear-resistant block, a plurality of ground-contacting teeth are distributed on the aluminum substrate, the wear-resistant block is positioned on the ground-contacting teeth, and the wear-resistant block is the above-mentioned wear-resistant block.

[0015] Preferably, the track shoe is formed by pouring molten aluminum into a mold cavity of a mold, a push rod is provided at the position of the mold cavity corresponding to the ground tooth, the wear-resistant block is arranged on the top surface of the push rod, and a gap is left between the wall panel at the position corresponding to the ground tooth of the mold cavity and the push rod for the casting liquid to be placed therein.

[0016] In order to facilitate the constraint of the push rod and the positioning block, the top surface of the push rod has a downwardly recessed positioning groove, and the positioning block with the wear-resistant block is completely inserted into the positioning groove. After the aluminum liquid is poured into the mold cavity, it covers the wear-resistant block and forms a track plate.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] 1. Structurally, the relative wall surfaces of the wear-resistant block body are inclined surfaces that gradually tilt toward each other from top to bottom, and there are limit grooves on the two relative wall surfaces. Due to the existence of the limit grooves of the wear-resistant block body, the limit grooves will be filled when the aluminum liquid is poured. After the aluminum liquid solidifies, it will tightly wrap the wear-resistant block. Even if the aluminum matrix on one side of the wear-resistant block is completely worn out, the aluminum matrix in the limit grooves on the adjacent two sides still has a limiting effect on the wear-resistant block, which can prevent the wear-resistant block from falling off from the track plate. In addition, the positioning block can realize the precise positioning of the wear-resistant block on the track plate grounding teeth, so that the thickness of the aluminum matrix around the wear-resistant block is the same, which prevents the wear-resistant block from falling off due to the wear of the aluminum matrix with a smaller thickness.

[0019] 2. The wear-resistant body is made of steel-bonded carbide, which has a high hardness and can improve the wear resistance of the aluminum-based track plate, but is not easy to process. The positioning block has low hardness requirements. Ordinary steel with moderate hardness can be selected and mechanical processing can meet the accuracy requirements required for positioning. The two are connected together by welding, which can meet both positioning requirements and wear resistance requirements, while also reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view of the wear-resistant block of this embodiment;

[0021] Figure 2 is a side view of the wear-resistant block of this embodiment;

[0022] Figure 3 is a bottom view of the wear-resistant block of this embodiment;

[0023] Figure 4 is a cross-sectional view of the wear-resistant block in the mold cavity in this embodiment;

[0024] Figure 5 It is a cross-sectional view of the embodiment in the casting state. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the wear-resistant block applied to the aluminum-based track shoe of a tank vehicle in this embodiment is used to be arranged in the ground contact teeth 31 of the track shoe. Specifically, the track shoe includes an aluminum substrate 3 and a wear-resistant block, and a plurality of ground contact teeth 31 are distributed on the aluminum substrate 3.

[0027] like Figures 1 to 5 As shown, the wear-resistant block includes a wear-resistant body 1 and a positioning block 2. The two opposite walls of the wear-resistant body 1 are both inclined surfaces 11 that gradually incline toward each other from top to bottom, as shown in FIG. Figure 2As shown, the angle α formed by the inclined surface 11 and the vertical surface is 5° to 10°. The aforementioned wear-resistant main body 1 is provided with limiting grooves 111 constrained by the grounding teeth 31 of the aluminum substrate on at least two relative wall surfaces. In the present embodiment, each wall surface has a limiting groove 111, and each limiting groove 111 is located near the center of the corresponding wall surface. In addition, the top corners 12 of the wear-resistant main body 1 are all rounded. The design of the rounded corners prevents stress concentration from occurring during the subsequent casting process, thereby achieving a good casting effect. In the present embodiment, the wear-resistant main body 1 adopts TiC-based high manganese steel-bonded cemented carbide with a hardness (HRC) of 60 to 65.

[0028] like Figure 4 and Figure 5 As shown, the track shoe is formed by pouring aluminum liquid into the mold cavity 41 of the mold 4, and a push rod 5 is provided at the position of the mold cavity 41 corresponding to the grounding tooth 31. The wear-resistant block is provided on the top surface of the push rod 5. Specifically, the top surface of the push rod 5 has a downwardly recessed positioning groove 51, and the positioning block 2 is completely inserted into the positioning groove 51. A gap 6 for the casting liquid to be placed is reserved between the corresponding wall plate at the corresponding position of the grounding tooth of the mold cavity 41 and the push rod 5.

[0029] The positioning block 2 is arranged on the bottom wall of the wear-resistant body 1. In the present embodiment, the top periphery of the positioning block 2 is welded and fixed to a corresponding position near the center of the bottom wall of the wear-resistant body 1.

[0030] The above-mentioned method for casting the wear-resistant body comprises the following steps in sequence:

[0031] a) The mold 4 has a mold cavity 41 in the shape of a crawler shoe, and the mold cavity 41 is provided with a push rod 5 at a position corresponding to the ground tooth, see Figure 4 ;

[0032] b) The positioning block 2 and the wear-resistant body 1 are welded into an integral structure, the push rod 5 is moved up to a high position, and then the positioning block 2 of the integral structure is placed into the positioning groove 51, and then the integral structure is returned to the position of the mold cavity 41 corresponding to the ground tooth 31 together with the push rod 5, see Figure 4 ;

[0033] c) Then, high-temperature aluminum alloy melt is poured into the mold cavity 41 until the melt covers the wear-resistant body 1 of the integrated structure. At this time, the melt is cooled to form the aluminum matrix of the track shoe. The melt in the gap 6 covers the wear-resistant body 1, and the limiting groove 111 is filled with the melt to form a protrusion matching the limiting groove 111, and the wear-resistant block is cast on the grounding tooth 31 of the aluminum matrix 3, see Figure 5 ;

[0034] d) The aluminum substrate of the track shoe with the wear-resistant block 1 is ejected from the mold cavity 41 by means of an ejector rod, see Figure 5 .

[0035] In the specification and claims of the present invention, terms indicating directions, such as "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as illustrations and should not be regarded as limitations.

Claims

1. A wear-resistant block for an aluminum-based track shoe of a tank vehicle, used to be arranged in a ground contact tooth (31) of the track shoe, characterized in that: The invention comprises a wear-resistant body (1), wherein two opposite wall surfaces of the wear-resistant body (1) are inclined surfaces (11) which are gradually inclined toward each other from top to bottom, and at least two opposite wall surfaces of the wear-resistant body (1) are provided with limiting grooves (111) constrained by the ground teeth (31).

2. The wear-resistant block according to claim 1, characterized in that: Each wall surface has the limiting groove (111).

3. The wear-resistant block according to claim 1, characterized in that: The limiting groove (111) is located at a position close to the center of the corresponding wall surface.

4. The wear-resistant block according to claim 1, characterized in that: The top corners (12) of the wear-resistant body (1) are all rounded.

5. The wear-resistant block according to claim 1, characterized in that: The angle α formed by the inclined surface (11) and the vertical surface is 5° to 10°.

6. The wear-resistant block according to any one of claims 1 to 5, characterized in that: A positioning block (2) is provided on the bottom wall plate of the wear-resistant main body (1), and the positioning block (2) is used to limit the position on the top rod (5) in the mold (4) for forming the track shoe.

7. The wear-resistant block according to claim 6, characterized in that: The top periphery of the positioning block (2) is welded and fixed at a corresponding position near the center of the bottom wall plate of the wear-resistant body (1).

8. A track shoe, comprising an aluminum substrate (3) and a wear-resistant block, wherein a plurality of ground-contacting teeth (31) are distributed on the aluminum substrate (3), and the wear-resistant block is positioned on the ground-contacting teeth (31), characterized in that: The wear-resistant block is the wear-resistant block described in any one of claims 1 to 5.

9. The track shoe according to claim 8, characterized in that: The track shoe is formed by pouring aluminum liquid into a mold cavity (41) of a mold (4); a push rod (5) is arranged at a position of the mold cavity (41) corresponding to the grounding tooth (31); the wear-resistant block is arranged on the top surface of the push rod (5); and a gap (6) for pouring liquid is left between the wall plate at a position corresponding to the grounding tooth of the mold cavity (41) and the push rod (5).

10. The track shoe according to claim 9, characterized in that: The top surface of the push rod (5) is provided with a downwardly recessed positioning groove (51), and a positioning block (2) is completely inserted into the positioning groove (51).

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