Threaded hole protection tool for mining excavator

Abstract

The utility model discloses a threaded hole protection tool for a mining excavator, which belongs to the technical field of mining excavators and comprises a threaded protection plug and a dismounting mechanism. The thread protection plug comprises a first column body, a cylindrical boss, a second column body and a dismounting hole, and an external thread is formed in the outer surface of the first column body; a cylindrical boss is arranged at the upper end of the first column body, a dismounting hole is formed in the upper portion of the cylindrical boss, and the dismounting hole penetrates through the cylindrical boss; a second column body is arranged at the lower end of the first column body; the dismounting mechanism comprises a first connecting piece, a second connecting piece and a third connecting piece, the second connecting piece is arranged at the lower end of the first connecting piece, the third connecting piece is arranged at the lower end of the second connecting piece, the front end and the rear end of the third connecting piece are third contact faces, and the third contact faces are square faces. Unused threaded holes in the mining excavator can be protected, and water and impurities are prevented from entering the threaded holes; and a threaded hole in a narrow position can be protected or released.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining excavators, and particularly relates to a thread hole protection tool for mining excavators. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] A mining excavator is a construction machinery that uses a bucket to shovel and load stripping materials from the working face into a transport vehicle or unload them to a stockpile. The main objects excavated by mining excavators are soil, coal, sediment, and pre-loosened soil and rocks.

[0004] With the popularization of domestic mining excavators, each mainframe factory has upgraded the structure of the variable track chassis. During the reinstallation of the variable track chassis, the protection of the bolt thread holes that are not installed has become a problem. Due to the special working environment of mining excavators, with a large amount of dust and impurities, it is easy for water to accumulate, dust to fall, or impurities to enter the unused thread holes. The existing methods usually use tape protection or thread protection plugs for protection. However, the protection effect of the tape protection structure is poor, and it is easy to accumulate water and rust inside. The tape is easy to break, and it is difficult to take out the impurities that enter the thread holes, which affects the subsequent bolt assembly; currently, it is difficult to take out the thread protection plugs. Some thread hole positions are special and the space is narrow, and the existing tools are difficult to be used for the installation and removal of thread protection plugs in special positions. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a thread hole protection tool for mining excavators, which can protect the unused thread holes on mining excavators to prevent water and impurities from entering the thread holes; it can also protect or remove the protection of thread holes in narrow positions to assemble bolts.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A thread hole protection tool for mining excavators includes a thread protection plug and a disassembly mechanism; the thread protection plug includes a first cylinder, a cylindrical boss, a second cylinder, and a disassembly hole; an external thread is provided on the outer surface of the first cylinder; a cylindrical boss is provided at the upper end of the first cylinder, a disassembly hole is provided in the upper part of the cylindrical boss, and the disassembly hole penetrates the cylindrical boss; a second cylinder is provided at the lower end of the first cylinder;

[0008] The disassembly mechanism includes a first connecting member, a second connecting member, and a third connecting member. The second connecting member is provided at the lower end of the first connecting member, the third connecting member is provided at the lower end of the second connecting member, and the front and rear ends of the third connecting member are third contact surfaces, and the third contact surface is a square surface.

[0009] Furthermore, the depth of the disassembly hole is the same as the length of the third connecting member.

[0010] Furthermore, the inner surface of the disassembly hole includes a first contact surface and a second contact surface.

[0011] Furthermore, the first contact surface is an arc-shaped surface, and the second contact surface is a plane.

[0012] Furthermore, the outer surface of the third connecting member includes a third contact surface, a fourth contact surface and a slope surface, the fourth contact surface is an arc-shaped surface, and the slope surface is located at the lower end of the fourth contact surface.

[0013] Furthermore, the curvature of the fourth contact surface is the same as that of the first contact surface, and the width of the third contact surface is the same as that of the second contact surface.

[0014] Furthermore, the first column, the second column and the cylindrical boss are an integrated structure, and the diameter of the first column is greater than the diameter of the second column.

[0015] Furthermore, the first connecting member, the second connecting member and the third connecting member are an integrated structure, the first connecting member is a hexahedron, and the second connecting member is a cylinder.

[0016] Furthermore, the cross-sectional shape of the first connecting member is hexagonal, and the cross-sectional shape of the second connecting member is circular.

[0017] Furthermore, the length of the second connecting member is greater than the lengths of the first connecting member and the third connecting member.

[0018] Compared with the prior art, the utility model has the following advantages and positive effects:

[0019] The utility model installs the threaded protection plug into an unused threaded hole or removes it from the threaded hole through a disassembly mechanism. The external thread on the outer surface of the first column has the same pitch as the internal thread in the threaded hole. During installation, the second column of the threaded protection plug first enters the threaded hole to facilitate the installation of the threaded protection plug. Then, the threaded protection plug is twisted through the disassembly mechanism to completely screw the first column of the threaded protection plug into the threaded hole, thus completing the installation of the threaded protection plug, thereby realizing protection of the unused threaded holes on the mining excavator to prevent water and impurities from entering the threaded holes. In the case where the light hole position above the X-frame has a narrow space, the disassembly mechanism can be used to install the threaded protection plug on the threaded hole in the narrow position for protection, or the threaded protection plug can be removed to release the protection and assemble the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The attached drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0021] Figure 1 is a schematic diagram of the usage state of the thread hole protection tool of the present utility model;

[0022] Figure 2 is Figure 1 an enlarged schematic diagram of part I in

[0023] Figure 3 a schematic diagram of the installation position of the thread protection plug of the present utility model;

[0024] Figure 4 is a structural diagram of the disassembly mechanism of the present utility model;

[0025] Figure 5 is a structural diagram of the thread protection plug of the present utility model;

[0026] In the figure: 1, crawler beam; 2, thread protection plug; 21, first cylinder; 22, external thread; 23, cylindrical boss; 24, disassembly hole; 241, first contact surface; 242, second contact surface; 25, second cylinder; 3, X-frame; 4, disassembly mechanism; 41, first connecting piece; 42, second connecting piece; 43, third connecting piece; 431, third contact surface; 432, fourth contact surface; 433, slope; 5, bolt; 6, crawler; 7, idler wheel. Detailed implementation manners

[0027] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0028] The following will combine the attached drawings to make a detailed description of the present utility model. A thread hole protection tool for a mining excavator disclosed in this embodiment includes a thread protection plug 2 and a disassembly mechanism 4; as Figure 5 shown, the thread protection plug 2 includes a first cylinder 21, a cylindrical boss 23, a second cylinder 25 and a disassembly hole 24. An external thread 22 is provided on the outer surface of the first cylinder 21; a cylindrical boss 23 is provided at the upper end of the first cylinder 21, a disassembly hole 24 is provided at the upper part of the cylindrical boss 23, and the disassembly hole 24 penetrates through the cylindrical boss 23; a second cylinder 25 is provided at the lower end of the first cylinder 21;

[0029] As Figure 4As shown, the disassembly mechanism 4 includes a first connecting member 41, a second connecting member 42 and a third connecting member 43. The second connecting member 42 is arranged at the lower end of the first connecting member 41, and the third connecting member 43 is arranged at the lower end of the second connecting member 42. The front and rear ends of the third connecting member 43 are third contact surfaces 431, and the third contact surfaces 431 are square surfaces.

[0030] The thread protection plug 2 is installed at the light hole position of the X-frame 3 through the disassembly mechanism 4. Figure 1 As shown, the track beam 1 and the X-frame 3 are connected together by bolts 5. When the vehicle is started, the threaded protective plug 2 is screwed into the threaded hole of the track beam 1 where no bolts are installed. The track 6 is supported by the supporting roller 7 to prevent the track 6 from interfering with the X-frame 3. The track beam 1 and the supporting roller 7 are connected together by bolts 5. In the process of transporting mining products, the width of the transport truck is considered, and the track beam 1 and the X-frame 3 are in a retracted state. The position of the track beam 1 where no bolts are installed is protected by the threaded protective plug 2. When the excavator is working, the track beam 1 moves outward relative to the X-frame 3, and the threaded protective plug 2 needs to be removed through the light hole above the X-frame 3 by the disassembly mechanism 4.

[0031] The threaded protection plug 2 is installed in an unused threaded hole or removed from the threaded hole through the disassembly mechanism 4. The external thread 22 on the outer surface of the first column 21 has the same pitch as the internal thread in the threaded hole. During installation, the second column 25 of the threaded protection plug 2 first enters the threaded hole to facilitate the installation of the threaded protection plug 2. Then, the threaded protection plug 2 is screwed through the disassembly mechanism 4 to completely screw the first column 21 of the threaded protection plug 2 into the threaded hole, thereby completing the installation of the threaded protection plug 2, thereby realizing protection of the unused threaded holes on the mining excavator to prevent water and impurities from entering the threaded holes. Since the space at the light hole position above the X-frame 3 is narrow, the threaded protection plug 2 can also be installed to protect the threaded hole in a narrow position, or the threaded protection plug 2 can be removed to release the protection and assemble the bolts.

[0032] The depth of the disassembly hole 24 is the same as the length of the third connecting member 43, and the inner surface of the disassembly hole 24 includes a first contact surface 241 and a second contact surface 242. The first contact surface 241 is an arcuate surface, and the second contact surface 242 is a plane. The outer surface of the third connecting member 43 includes a third contact surface 431, a fourth contact surface 432, and a slope surface 433, the fourth contact surface 432 is an arcuate surface, and the slope surface 433 is at the lower end of the fourth contact surface 432. The curvature of the fourth contact surface 432 is the same as that of the first contact surface 241, and the width of the third contact surface 431 is the same as that of the second contact surface 242.

[0033] The first cylinder 21, the second cylinder 25, and the cylindrical boss 23 are of an integrated structure, and the diameter of the first cylinder 21 is greater than that of the second cylinder 25. The first connecting member 41, the second connecting member 42, and the third connecting member 43 are of an integrated structure. The first connecting member 41 is a hexahedron, and the second connecting member 42 is a cylinder. The cross-sectional shape of the first connecting member 41 is a hexagon, and the cross-sectional shape of the second connecting member 42 is a circle.

[0034] As Figure 2 shown, the length of the second connecting member 42 is greater than the lengths of the first connecting member 41 and the third connecting member 43. There is a moving gap between the surface of the second connecting member 42 and the inner surface of the light hole in the upper part of the X-frame 3. Through the second connecting member 42, the third connecting member 43 can pass through the light hole and then be inserted into the disassembly hole 24 of the threaded protective plug 2, facilitating the installation of the threaded protective plug 2 for the threaded hole in a narrow position.

[0035] As Figure 3 shown, a number of threaded holes are arranged at intervals on the crawler beam 1. The threaded protective plugs 2 are installed in some of the threaded holes. When the threaded protective plugs 2 need to be installed or disassembled, the third connecting member 43 of the disassembly mechanism 4 is inserted into the disassembly hole 24. At this time, the first contact surface 241 of the disassembly hole 24 is in close contact with the fourth contact surface 432 of the third connecting member 43, and the second contact surface 242 of the disassembly hole 24 is in close contact with the third contact surface 431 of the third connecting member 43. The third contact surface 431 is processed into a square surface, which has a low cost, can withstand a large force, and is convenient and durable. After each contact surface is in close contact, the first connecting member 41 of the disassembly mechanism 4 is rotated. The first connecting member 41 is a hexahedron, which is more convenient to rotate and can also be used in cooperation with other installation tools. After rotation, the first cylinder 21 of the threaded protective plug 2 is screwed into or out of the threaded hole, realizing the protection of the threaded hole and effectively preventing water or impurities from entering the unused threaded hole.

[0036] Although the specific implementation manners of the present invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. A threaded hole protection tool for a mining excavator, characterized in that, It includes a threaded protective plug and a disassembly mechanism; the threaded protective plug includes a first cylinder, a cylindrical boss, a second cylinder, and a disassembly hole. An external thread is provided on the outer surface of the first cylinder; a cylindrical boss is provided at the upper end of the first cylinder, a disassembly hole is provided in the upper part of the cylindrical boss, and the disassembly hole penetrates through the cylindrical boss; a second cylinder is provided at the lower end of the first cylinder. The disassembly mechanism includes a first connecting piece, a second connecting piece, and a third connecting piece. The second connecting piece is provided at the lower end of the first connecting piece, the third connecting piece is provided at the lower end of the second connecting piece, and the front and rear ends of the third connecting piece are third contact surfaces, and the third contact surface is a square surface.

2. The thread hole protection tool for a mining excavator according to claim 1, characterized in that, The depth of the disassembly hole is the same as the length of the third connecting piece.

3. The threaded hole protection tool for a mining excavator according to claim 2, characterized in that, The inner surface of the disassembly hole includes a first contact surface and a second contact surface.

4. The thread hole protection tool for a mining excavator according to claim 3, characterized in that, The first contact surface is an arc surface, and the second contact surface is a flat surface.

5. The thread hole protection tool for a mining excavator according to claim 4, characterized in that, The outer surface of the third connecting piece includes a third contact surface, a fourth contact surface, and a slope surface. The fourth contact surface is an arc surface, and the slope surface is located at the lower end of the fourth contact surface.

6. The thread hole protection tool for a mining excavator according to claim 5, characterized in that, The radian of the fourth contact surface is the same as the radian of the first contact surface, and the width of the third contact surface is the same as the width of the second contact surface.

7. The thread hole protection tool for a mining excavator according to claim 1, characterized in that, The first cylinder, the second cylinder, and the cylindrical boss are of an integrated structure, and the diameter of the first cylinder is greater than the diameter of the second cylinder.

8. The thread hole protection tool for a mining excavator according to claim 1, wherein The first connecting piece, the second connecting piece, and the third connecting piece are of an integrated structure. The first connecting piece is a hexahedron, and the second connecting piece is a cylinder.

9. A thread hole protection tool for a mining excavator according to claim 1, characterized in that, The cross-sectional shape of the first connecting piece is a hexagon, and the cross-sectional shape of the second connecting piece is a circle.

10. A thread hole protection tool for a mining excavator according to claim 1, characterized in that, The length of the second connecting piece is greater than the lengths of the first connecting piece and the third connecting piece.

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