Track shoe and excavator

Abstract

The track shoe comprises a track shoe body and a wear-resistant component, one side of the track shoe body is bent downwards to form a downwards-bent part, the other side of the track shoe body is tilted upwards to form an upwards-tilted part, a plurality of track teeth are arranged on the track shoe body and extend in the length direction of the track shoe body, and the wear-resistant component is arranged on the track shoe body. And the wear-resistant part is fixedly arranged on the crawler teeth close to one side of the upwarp part. The height of the crawler teeth is increased through the wear-resistant parts, the crawler teeth can be deeply inserted into the ground, large road holding force is obtained, and the phenomenon of crawler slipping is avoided. The weight of materials transported by the excavator is increased, and production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crawler plates, and in particular relates to a crawler plate and an excavator. Background Art

[0002] Track shoes are the chassis parts of construction machinery, and are commonly used in construction machinery such as excavators, bulldozers, crawler cranes, and pavers. Its main function is to contact the ground and insert the grouser into the ground to drive the construction machinery to move. Under the action of the driving torque, the drive wheel continuously rolls up the crawler from the rear through the meshing between the gear teeth on the drive wheel and the track shoe pin, thus realizing the movement of the construction machinery.

[0003] At present, 14-ton to 23-ton excavators used in forestry production operations at home and abroad are generally equipped with three-tooth track shoes. This is mainly due to the high strength and wear resistance of three-tooth track shoes. However, three-tooth track shoes also have some limitations. For example, the tooth height of its grouser is relatively low, resulting in a shallow depth of insertion into the ground, so the traction generated is relatively small. This may cause the track to slip easily during the excavator's movement, especially in slippery or soft ground conditions, this slip phenomenon may be more serious. In order to avoid track slippage, excavator operators usually need to reduce the weight of the transported materials, resulting in reduced production efficiency. Utility Model Content

[0004] In order to solve the problems in the above-mentioned prior art, the first aspect of the utility model provides a track plate, including a track plate body and a wear-resistant component, one side of the track plate body is bent downward to form a lower bent portion, and the other side is raised upward to form an upper raised portion, a plurality of grousers are arranged on the track plate body, and the grousers extend along the length direction of the track plate body, and the wear-resistant component is fixedly arranged on the grousers close to the upper raised portion.

[0005] Furthermore, the cross-section of the grouser is an isosceles trapezoidal structure, and chamfers are provided on both sides of the top.

[0006] Furthermore, the cross section of the wear-resistant component is a hexagonal structure, and the two lower oblique sides cooperate with the chamfers on the top of the grouser to form a receiving groove for accommodating the welding filler.

[0007] Furthermore, the difference between the height D of the wear-resistant component and the height C of the grouser is less than or equal to 5 mm.

[0008] Furthermore, the bottom edge width E of the wear-resistant component is less than or equal to the top edge width A of the grouser.

[0009] Furthermore, the width F of the wear-resistant component is less than or equal to the width B of the grouser.

[0010] Furthermore, the wear-resistant parts are made of high-chromium alloy structural steel.

[0011] Furthermore, the track shoe body and the grouser are made of high-chromium and high-manganese alloy structural steel.

[0012] A second aspect of the utility model provides an excavator, comprising the track shoe as described above.

[0013] Compared with the prior art, the crawler shoe and excavator of the utility model mainly have the following advantages:

[0014] The wear-resistant component of the utility model is welded on the grouser near the side of the upturned part. The wear-resistant component increases the height of the grouser, can be inserted deeper into the ground, obtains greater grip, and avoids the crawler slipping phenomenon. The weight of the material transported by the excavator is increased, and the production efficiency is improved. At the same time, the two lower bevels of the wear-resistant component cooperate with the chamfers on the top of the grouser to form a receiving groove for accommodating the welding filler. During welding, the filler melts or partially melts and merges with the parent material, fills the weld and forms a welded joint. Thereby ensuring the welding quality, improving the welding strength, and improving the welding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the track shoe of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the track shoe of the utility model;

[0017] Figure 3 yes Figure 2 Partial magnification Figure I ;

[0018] Figure 4 It is a structural schematic diagram of the wear-resistant component of the utility model;

[0019] In the figure: 1. Track shoe body; 2. Grouser; 3. Wear-resistant parts. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The utility model discloses a track shoe, comprising a track shoe body 1 and a wear-resistant component 3. One side of the track shoe body 1 is bent downward to form a lower bent portion, and the other side is tilted upward to form an upward tilted portion. A plurality of grousers 2 are arranged on the track shoe body 1, and the grousers 2 extend along the length direction of the track shoe body 1. The wear-resistant component 3 is fixedly arranged on the grouser 2 near the upward tilted portion. The wear-resistant component 3 increases the height of the grouser 2, can be deeply inserted into the ground, obtains greater grip, and avoids the track slipping phenomenon. The weight of the material transported by the excavator is increased, and the production efficiency is improved.

[0024] In some embodiments, the track shoe is a three-tooth track shoe, that is, the number of grousers 2 is three, and the compartments are evenly arranged on the surface of the track shoe body 1 and extend along the length direction of the track shoe body 1. The top surface a of the grouser 2 and the bottom surface b of the wear-resistant component 3 are welded together by carbon dioxide gas shielded welding.

[0025] In some embodiments, the cross section of the grouser 2 is an isosceles trapezoidal structure, and chamfers are provided on both sides of the top. The cross section of the wear-resistant component 3 is a hexagonal structure, and the two lower oblique sides cooperate with the chamfers on the top of the grouser 2 to form a receiving groove for accommodating welding fillers. During welding, the filler melts or partially melts and fuses with the parent material, fills the weld and forms a welded joint. This ensures welding quality, improves welding strength, and improves welding performance.

[0026] In the above embodiments, there are many types of fillers, such as welding wire, welding rod, welding flux, welding powder, etc.

[0027] In some embodiments, to improve the structural strength, the difference between the height D of the wear-resistant component 3 and the height C of the grouser 2 is less than or equal to 5 mm, the bottom width E of the wear-resistant component 3 is less than or equal to the top width A of the grouser 2, and the width F of the wear-resistant component 3 is less than or equal to the width B of the grouser 2. The specific sizes of the wear-resistant component 3 and the grouser 2 can be selected according to actual needs.

[0028] For example, in some embodiments, the top edge width A of the grouser 2 is 11 mm, the width B of the grouser 2 is 20 mm, the height C of the grouser 2 is 26 mm, the height D of the wear-resistant part 3 is 29 mm, the bottom edge width E of the wear-resistant part 3 is 6.4 mm, and the width F of the wear-resistant part 3 is 15.9 mm.

[0029] In some embodiments, the wear-resistant component 3 is made of high chromium alloy structural steel, which is produced by rolling process and heat-treated by quenching and tempering process after hot rolling. The quenching temperature is 860° C., the tempering temperature is 430° C., and the hardness of the wear-resistant component 3 is 30-40 HRC.

[0030] In some embodiments, the material of the track shoe body 1 and the grouser 2 is high-chromium and high-manganese alloy structural steel. The hot rolling process is adopted for production, and the hot-rolled profile is heat treated by quenching + tempering process after punching. The quenching temperature is 870°C, the quenching time is 24s, the tempering temperature is 200°C, and the tempering time is 60min. The metallographic structure is martensite, and the hardness of the track shoe body 1 and the grouser 2 is 40-50HRC. During quenching, the quenching medium is selected as quenching liquid + water to prevent the track shoe from cracking due to excessive cooling speed. During the heat treatment process, pressure quenching is used to ensure the flatness requirements. The track shoe body 1 and the grouser 2 are shot blasted after tempering.

[0031] The utility model also discloses an excavator, comprising the above-mentioned crawler shoe.

[0032] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0033] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0034] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A track shoe, characterized in that: The invention comprises a track shoe body (1) and a wear-resistant component (3), wherein one side of the track shoe body (1) is bent downward to form a downward bent portion, and the other side is raised upward to form an upward raised portion, a plurality of grousers (2) are arranged on the track shoe body (1), and the grousers (2) extend along the length direction of the track shoe body (1), and the wear-resistant component (3) is fixedly arranged on the grouser (2) close to the upward raised portion.

2. The track shoe according to claim 1, characterized in that: The cross section of the grouser (2) is an isosceles trapezoidal structure, and chamfers are provided on both sides of the top.

3. The track shoe according to claim 2, characterized in that: The cross section of the wear-resistant component (3) is a hexagonal structure, and the two lower oblique sides thereof cooperate with the chamfers at the tops of the grouser (2) to form a receiving groove for receiving the welding filler.

4. The track shoe according to claim 3, characterized in that: The difference between the height D of the wear-resistant component (3) and the height C of the grouser (2) is less than or equal to 5 mm.

5. The track shoe according to claim 3, characterized in that: The bottom edge width E of the wear-resistant component (3) is less than or equal to the top edge width A of the grouser (2).

6. The track shoe according to claim 3, characterized in that: The width F of the wear-resistant component (3) is less than or equal to the width B of the grouser (2).

7. The track shoe according to claim 1, characterized in that: The wear-resistant component (3) is made of high-chromium alloy structural steel.

8. The track shoe according to claim 1, characterized in that: The track shoe body (1) and the grouser (2) are made of high-chromium and high-manganese alloy structural steel.

9. An excavator, characterized in that: The invention comprises a track shoe as claimed in any one of claims 1 to 8.

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