Length-adjustable shearer rocker structure

Abstract

The application discloses a length-adjustable shearer rocker structure and relates to the field of shearer, which comprises a rocker body, a telescopic assembly arranged on the rocker body, and a U-shaped push block arranged at one end of the rocker body. The U-shaped push block, the push cylinder and the connecting block are cooperatively arranged. In use, the connecting block is fixedly connected to the rocker body and the U-shaped push block through the fixing assembly, the push cylinder is fixed, the rocker body is moved along the U-shaped push block through the telescopic operation of the push cylinder, the length is adjusted, the shearer can adapt to different working face mining height requirements, and the problem that the length of the shearer rocker structure is not adjustable and the mining height range of each shearer model is fixed is avoided, so that the adaptability to the underground coal seam geological conditions is improved.

Description

Technical Field

[0001] This application relates to the field of coal mining machines, and in particular to a rocker arm structure for a coal mining machine with adjustable length. Background Technology

[0002] The coal mining machine is one of the important pieces of equipment in the production of fully mechanized coal mining faces. It completes the coal dropping and loading operations at the working face by raising and lowering the rocker arm and rotating the drum. The rocker arm is the main component of the coal mining machine.

[0003] Currently, the rocker arm structure of coal mining machines is of an integral length that is not adjustable, and the mining height range of each model of coal mining machine is fixed, resulting in insufficient adaptability to underground coal seam geological conditions. Utility Model Content

[0004] To address the aforementioned issues, this application provides a rocker arm structure for a coal mining machine with adjustable length.

[0005] The technical solution for the adjustable-length rocker arm structure of a coal mining machine provided in this application is as follows:

[0006] An adjustable-length rocker arm structure for a coal mining machine includes a rocker arm body with a telescopic assembly. The telescopic assembly includes a U-shaped push block disposed at one end of the rocker arm body, with one end of the rocker arm body located inside the U-shaped push block. Two vertically arranged push cylinders are fixedly connected to the inner wall of the U-shaped push block on both sides of the rocker arm body. Connecting blocks are fixedly connected to both ends of the push cylinders, and the connecting blocks are respectively inserted into the rocker arm body and the U-shaped push block. Fixing assemblies for fixing the connecting blocks are provided on the rocker arm body and the U-shaped push block.

[0007] By adopting the above technical solution, during use, the connecting block is fixedly connected to the rocker arm body and the U-shaped pusher block respectively through the fixing component, and the pusher cylinder is fixed. By operating the extension and retraction of the pusher cylinder, the rocker arm body moves along the U-shaped pusher block to achieve length adjustment, so that the coal mining machine can adapt to the mining height requirements of different working faces. This avoids the problem that the rocker arm structure of the coal mining machine is an integral length that cannot be adjusted, and the mining height range of each model of coal mining machine is fixed, which leads to insufficient adaptability to the geological conditions of underground coal seams.

[0008] Preferably, the fixing assembly includes a plurality of fixing pins disposed on one side of the rocker arm body and the U-shaped push block. The fixing pins pass through the rocker arm body and the U-shaped push block respectively and are inserted into the connecting block. The sidewalls of the rocker arm body and the U-shaped push block are provided with a plurality of fixing covers for abutting the fixing pins. The sidewalls of the fixing covers are each provided with a plurality of fixing bolts. The fixing bolts pass through the fixing covers and are threadedly connected to the rocker arm body and the U-shaped push block respectively.

[0009] By adopting the above technical solution, after inserting the connecting block into the rocker arm body and the U-shaped push block respectively, the connecting block is fitted onto the fixed pin shaft by inserting the fixed pin shaft into the rocker arm body and the U-shaped push block, thus fixing the connecting block. Then, the fixed cover is installed on the rocker arm body and the U-shaped push block respectively by fixing bolts to fix the fixed pin shaft, which facilitates the installation and fixing of the push cylinder.

[0010] Preferably, both the rocker arm body and the sidewall of the U-shaped push block are provided with multiple receiving grooves for concealing the fixing cover and the fixing bolt.

[0011] By adopting the above technical solution, the fixing cover and fixing bolt can be accommodated and hidden by the receiving groove, preventing the fixing cover and fixing bolt from extending to the outside of the rocker arm body or U-shaped push block, which would cause friction and lead to the rotation of the fixing bolt, causing the fixing cover to loosen, thus improving the installation stability.

[0012] Preferably, the U-shaped push block is provided with fixing plates at both the top and bottom. The fixing plate has multiple fastening bolts on one side wall. The fastening bolts pass through the fixing plate and are threadedly connected to the U-shaped push block. A positioning block is fixedly connected to the side wall of the fixing plate near the rocker arm body. The end of the positioning block away from the fixing plate is in contact with the rocker arm body.

[0013] By adopting the above technical solution, the fixing plate is installed on the U-shaped push block by fastening bolts, so that the positioning block abuts against the rocker arm body. This can improve the stability of the rocker arm body when sliding, and at the same time reduce the pressure of the rocker arm body on the push cylinder and connecting block.

[0014] Preferably, the positioning block has a plurality of ball bearings rotatably connected to one end near the rocker arm body, and the ball bearings abut against the rocker arm body.

[0015] By adopting the above technical solution, the friction between the positioning block and the rocker arm body can be reduced by the contact between the ball bearing and the rocker arm body, making it easier for the rocker arm body to slide.

[0016] Preferably, the side wall of the fixing plate away from the U-shaped push block has multiple receiving holes for concealing the fastening bolts.

[0017] By adopting the above technical solution, the fastening bolt can be hidden inside the fixing plate through the receiving hole, preventing the nut end of the fastening bolt from extending outside the fixing plate. During use, if the fastening bolt is touched, it will cause the fastening bolt to loosen.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. This application utilizes the cooperative arrangement of structures such as U-shaped push blocks, push cylinders, and connecting blocks. During use, the connecting blocks are fixedly connected to the rocker arm body and the U-shaped push blocks via fixing components, and the push cylinders are fixed in place. By operating the extension and retraction of the push cylinders, the rocker arm body moves along the U-shaped push blocks, thereby adjusting the length. This allows the coal mining machine to adapt to the mining height requirements of different working faces, minimizing the problem that the rocker arm structure of coal mining machines is an integral, non-adjustable structure, and the mining height range of each model of coal mining machine is fixed, resulting in insufficient adaptability to underground coal seam geological conditions.

[0020] 2. Install the fixing plate on the U-shaped push block by tightening the bolts, so that the positioning block abuts against the rocker arm body. This can improve the stability of the rocker arm body when sliding, and at the same time reduce the pressure of the rocker arm body on the push cylinder and connecting block. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an adjustable-length rocker arm structure for a coal mining machine according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram illustrating the main top view of the embodiment of this application;

[0023] Figure 3 The embodiments of this application mainly embody Figure 2 A schematic diagram of the enlarged structure of region A in the middle;

[0024] Figure 4 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region B in the middle.

[0025] Reference numerals in the attached drawings: 1. Rocker arm body; 2. U-shaped pusher block; 3. Pusher cylinder; 4. Connecting block; 5. Fixing pin; 6. Fixing cover; 7. Fixing bolt; 8. Receiving groove; 9. Fixing plate; 10. Fastening bolt; 11. Positioning block; 12. Ball bearing; 13. Receiving hole. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0027] This application discloses a rocker arm structure for a coal mining machine with adjustable length.

[0028] Reference Figure 1 , Figure 2 and Figure 3 An adjustable length coal mining machine rocker arm structure includes a rocker arm body 1, a telescopic assembly on the rocker arm body 1, and the telescopic assembly includes a U-shaped push block 2, a push cylinder 3 and a connecting block 4.

[0029] One end of the rocker arm body 1 is located inside the U-shaped push block 2. Multiple push cylinders 3 are provided, located on both sides of the rocker arm body 1 and arranged vertically. Multiple connecting blocks 4 are provided, which are fixedly connected to both ends of the push cylinders 3. The connecting blocks 4 are respectively inserted into the rocker arm body 1 and the U-shaped push block 2. The rocker arm body 1 and the U-shaped push block 2 are provided with fixing components for fixing the connecting blocks 4.

[0030] Reference Figure 2 and Figure 3 The fixing assembly includes multiple fixing pins 5 disposed on one side of the rocker arm body 1 and the U-shaped push block 2. The fixing pins 5 pass through the rocker arm body 1 and the U-shaped push block 2 respectively and are inserted into the connecting block 4. The side walls of the rocker arm body 1 and the U-shaped push block 2 are provided with multiple fixing covers 6 for abutting the fixing pins 5. The side walls of the fixing covers 6 are provided with multiple fixing bolts 7. The fixing bolts 7 pass through the fixing covers 6 and are threadedly connected to the rocker arm body 1 and the U-shaped push block 2 respectively. After the connecting block 4 is inserted into the rocker arm body 1 and the U-shaped push block 2 respectively, the fixing pins 5 are inserted into the rocker arm body 1 and the U-shaped push block 2, so that the connecting block 4 is sleeved on the fixing pins 5 to fix the connecting block 4. Then, the fixing covers 6 are installed on the rocker arm body 1 and the U-shaped push block 2 respectively by the fixing bolts 7 to fix the fixing pins 5, which facilitates the installation and fixing of the push cylinder 3.

[0031] Reference Figure 2 and Figure 3 Both the rocker arm body 1 and the U-shaped push block 2 have multiple receiving grooves 8 on their side walls for hiding the fixing cover 6 and the fixing bolt 7. The fixing cover 6 and the fixing bolt 7 can be hidden by the receiving grooves 8, which prevents the fixing cover 6 and the fixing bolt 7 from extending to the outside of the rocker arm body 1 or the U-shaped push block 2, causing friction that would cause the fixing bolt 7 to rotate and the fixing cover 6 to loosen, thus improving the installation stability.

[0032] Reference Figure 1 and Figure 4 The U-shaped push block 2 is provided with fixing plates 9 on both the top and bottom. The side wall of the fixing plate 9 is provided with multiple fastening bolts 10. The fastening bolts 10 pass through the fixing plate 9 and are threadedly connected to the U-shaped push block 2. The side wall of the fixing plate 9 near the rocker arm body 1 is fixedly connected with a positioning block 11. The end of the positioning block 11 away from the fixing plate 9 is in contact with the rocker arm body 1. The fixing plate 9 is installed on the U-shaped push block 2 by fastening bolts 10, so that the positioning block 11 abuts against the rocker arm body 1. This can improve the stability of the rocker arm body 1 when sliding, and at the same time reduce the pressure of the rocker arm body 1 on the push cylinder 3 and the connecting block 4.

[0033] Reference Figure 4The positioning block 11 is rotatably connected to a plurality of balls 12 near the end of the rocker arm body 1. The balls 12 abut against the rocker arm body 1. By abutting against the rocker arm body 1, the friction between the positioning block 11 and the rocker arm body 1 can be reduced, making it easier for the rocker arm body 1 to slide.

[0034] Reference Figure 4 The side wall of the fixing plate 9 away from the U-shaped push block 2 has multiple receiving holes 13 for hiding the fastening bolts 10. The fastening bolts 10 can be hidden inside the fixing plate 9 through the receiving holes 13, preventing the nut end of the fastening bolts 10 from extending outside the fixing plate 9. When in use, touching the fastening bolts 10 will cause the fastening bolts 10 to loosen.

[0035] The implementation principle of the adjustable length rocker arm structure of this application embodiment is as follows: In use, firstly, the connecting block 4 is inserted into the rocker arm body 1 and the U-shaped push block 2 respectively. By inserting the fixing pin 5 into the rocker arm body 1 and the U-shaped push block 2, the connecting block 4 is sleeved on the fixing pin 5 to fix the connecting block 4. Then, the fixing cover 6 is installed on the rocker arm body 1 and the U-shaped push block 2 respectively by fixing bolts 7 to fix the fixing pin 5. The push cylinder 3 is installed, and by operating the extension and retraction of the push cylinder 3, the rocker arm body... 1. Move along the U-shaped push block 2 to adjust the length, so that the coal mining machine can adapt to the mining height requirements of different working faces. At the same time, the fixing plate 9 is installed on the U-shaped push block 2 by fastening bolts 10, so that the positioning block 11 abuts against the rocker arm body 1. This can improve the stability of the rocker arm body 1 when sliding and reduce the pressure of the rocker arm body 1 on the push cylinder 3 and connecting block 4. This avoids the problem that the rocker arm structure of the coal mining machine is an integral length that cannot be adjusted, and the mining height range of each model of coal mining machine is fixed, which leads to insufficient adaptability to the geological conditions of the underground coal seam.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rocker arm structure for a coal mining machine with adjustable length, comprising a rocker arm body (1), wherein the rocker arm body (1) is provided with a telescopic component, characterized in that: The telescopic assembly includes a U-shaped push block (2) disposed at one end of the rocker arm body (1). One end of the rocker arm body (1) is located inside the U-shaped push block (2). The inner wall of the U-shaped push block (2) is fixedly connected to two vertically arranged push cylinders (3) on both sides of the rocker arm body (1). Connecting blocks (4) are fixedly connected to both ends of the push cylinders (3). The connecting blocks (4) are respectively inserted into the rocker arm body (1) and the U-shaped push block (2). The rocker arm body (1) and the U-shaped push block (2) are provided with fixing components for fixing the connecting blocks (4).

2. The adjustable-length rocker arm structure for a coal mining machine according to claim 1, characterized in that: The fixing assembly includes multiple fixing pins (5) disposed on one side of the rocker arm body (1) and the U-shaped push block (2). The fixing pins (5) pass through the rocker arm body (1) and the U-shaped push block (2) respectively and are inserted into the connecting block (4). The side walls of the rocker arm body (1) and the U-shaped push block (2) are provided with multiple fixing covers (6) for abutting the fixing pins (5). The side walls of the fixing covers (6) are provided with multiple fixing bolts (7). The fixing bolts (7) pass through the fixing covers (6) and are threadedly connected to the rocker arm body (1) and the U-shaped push block (2) respectively.

3. The adjustable-length rocker arm structure for a coal mining machine according to claim 2, characterized in that: The rocker arm body (1) and the U-shaped push block (2) both have multiple receiving grooves (8) on their side walls for concealing the fixing cover (6) and the fixing bolt (7).

4. The adjustable-length rocker arm structure for a coal mining machine according to claim 3, characterized in that: The U-shaped push block (2) is provided with a fixing plate (9) on both the top and bottom. The fixing plate (9) has a plurality of fastening bolts (10) on one side wall. The fastening bolts (10) pass through the fixing plate (9) and are threadedly connected to the U-shaped push block (2).

5. The adjustable-length rocker arm structure for a coal mining machine according to claim 4, characterized in that: A positioning block (11) is fixedly connected to the side wall of the fixing plate (9) near the rocker arm body (1), and the end of the positioning block (11) away from the fixing plate (9) is in contact with the rocker arm body (1).

6. The adjustable-length rocker arm structure for a coal mining machine according to claim 5, characterized in that: The positioning block (11) is rotatably connected to a plurality of ball bearings (12) at one end near the rocker arm body (1), and the ball bearings (12) abut against the rocker arm body (1).

7. The adjustable-length rocker arm structure for a coal mining machine according to claim 6, characterized in that: The fixing plate (9) has multiple receiving holes (13) on the side wall away from the U-shaped push block (2) for hiding the fastening bolts (10).

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