Main frame connecting structure of coal mining machine

Abstract

The utility model discloses a main frame connecting structure of a coal mining machine, which comprises a coal mining machine body and a main frame body, the outer side walls of the coal mining machine body and the main frame body are connected with concave plates in a sliding manner, and the coal mining machine body and the main frame body are connected with the concave plates through a plurality of fixing bolts. According to the utility model, under the interaction of the coal mining machine body, the main frame body, the concave plate, the fixing bolt, the fixing sleeve, the spring, the limiting bolt and the rubber plate, the two extension plates on the outer side walls of the coal mining machine body and the main frame body are connected by using the limiting bolt, and the rubber plate is arranged between the two extension plates; after the coal mining machine body vibrates, vibration can be transmitted to the main frame body through the rubber plate, the rubber plate can relieve the vibration through deformation, meanwhile, the springs located in the fixing sleeves can relieve the vibration trend of the main frame body through deformation of the springs after the two concave plates get close to each other due to vibration, and the main frame body is safer and more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of coal shearers, in particular to a main frame connection structure of a coal shearer. Background Art

[0002] Coal mining machine is one of the main equipment in the comprehensive mining equipment set. Coal mining machine has evolved from coal cutting machine. Coal mining machine is a large and complex system integrating mechanical, electrical and hydraulic functions. Coal mining machine is one of the important equipment for realizing the mechanization and modernization of coal mine production. Mechanized coal mining can reduce physical labor, improve safety, and achieve the goals of high output, high efficiency and low consumption.

[0003] According to a coal mining machine main frame body connection structure published by announcement number CN207177889U, it includes a main frame body, and the main frame body includes a traction part and a frame, and the traction part and the frame are fixedly connected on the connection surface by ordinary bolts, and it is characterized in that a first reinforcing rib is welded on one side of the upper end of the traction part and one side of the upper end of the frame, and a through hole is opened on the first reinforcing rib, and a hydraulic pull rod is also provided, and the two ends of the hydraulic pull rod are respectively connected to the first reinforcing ribs on the traction part and the frame, and the two ends are respectively locked by hydraulic nuts. The utility model improves the connection method of the main frame, can improve the connection stability of the traction part and the frame, and prevent the fuselage from shaking violently due to the complex geological conditions of the working face in the mining area, thereby preventing accidents.

[0004] At present, in the above scheme, the traction part and the frame are locked by hydraulic nuts and supported by hydraulic pull rods, which makes the traction part and the frame a rigid connection. When the traction part is subjected to severe vibration, the vibration will be transmitted from the traction part to the frame through the bolts. When frequent and high-intensity vibrations are transmitted to the frame, after a long time, not only will the frame fall apart, but also the normal operation of the main machine in the frame will be affected. Therefore, we proposed a main frame connection structure of the coal mining machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the above-mentioned background technology and to propose a main frame connection structure for a coal mining machine.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The main frame connection structure of the coal mining machine includes a coal mining machine body and a main frame body, and the outer walls of the coal mining machine body and the main frame body are slidably connected with a concave plate, and the coal mining machine body and the main frame body are connected to the concave plate by multiple fixing bolts, and multiple fixing sleeves are fixedly connected to the outer walls of the concave plates, and the inner walls of the two coaxially arranged fixing sleeves are slidably sleeved with the same spring, and the outer walls of the coal mining machine body and the main frame body are fixedly connected with two extension plates, and the two extension plates located on the same side are connected by two limit bolts, and the outer walls of the two limit bolts are slidably sleeved with the same rubber plate.

[0008] Preferably, two sliding holes are provided on the outer side wall of the rubber plate, and the outer side wall of the limiting bolt and the inner side wall of the sliding hole are slidably connected.

[0009] Preferably, two through holes are provided on the outer side wall of the extension plate, and the outer side wall of the limiting bolt is slidably connected to the two through holes on the same side.

[0010] Preferably, a plurality of threaded holes are provided on the top and bottom of the coal mining machine body and the top and bottom of the main frame body, and the outer side walls of the fixing bolts are threadedly connected to the inner side walls of the threaded holes.

[0011] Preferably, the plurality of fixing sleeves are distributed on the outer side wall of the concave plate in a rectangular array.

[0012] The beneficial effects of the utility model are:

[0013] Under the interaction of the coal mining machine body, main frame body, concave plate, fixing bolts, fixing sleeves, springs, limit bolts and rubber plates, the two extension plates on the outer side walls of the coal mining machine body and the main frame body are connected by using limit bolts, and the rubber plate is placed between the two extension plates. After the coal mining machine body vibrates, the vibration will be transmitted to the main frame body through the rubber plate. The rubber plate will reduce the vibration by deformation. At the same time, the spring located in the fixing sleeve can be deformed after the two concave plates are vibrated and approach each other, thereby reducing the vibration trend of the main frame body, making the main frame body safer and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the main frame connection structure of the coal mining machine proposed in the utility model;

[0015] Figure 2 This is a front view of the main frame connection structure of the coal mining machine proposed by the utility model;

[0016] Figure 3 This is a side view of the concave plate in the main frame connection structure of the coal mining machine proposed in the utility model;

[0017] Figure 4This is a top view of the rubber plate in the main frame connection structure of the coal mining machine proposed in the utility model;

[0018] Figure 5 This is a top view of the main frame connection structure of the coal mining machine proposed in the utility model.

[0019] In the figure: 1. Coal mining machine body; 2. Main frame; 3. Concave plate; 4. Fixing bolt; 5. Fixing sleeve; 6. Spring; 7. Extension plate; 8. Limit bolt; 9. Rubber plate; 10. Sliding hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-5 The shearer main frame connection structure includes a shearer body 1 and a main frame body 2. The outer walls of the shearer body 1 and the main frame body 2 are slidably connected with a concave plate 3. The shearer body 1 and the main frame body 2 are connected to the concave plate 3 through a plurality of fixing bolts 4. The top and bottom of the shearer body 1 and the top and bottom of the main frame body 2 are each provided with a plurality of threaded holes. The outer walls of the fixing bolts 4 are threadedly connected to the inner walls of the threaded holes.

[0022] A plurality of fixed sleeves 5 are fixedly connected to the outer wall of the concave plate 3. The plurality of fixed sleeves 5 are distributed in a rectangular array on the outer wall of the concave plate 3. The inner walls of the two coaxial fixed sleeves 5 are slidably sleeved with the same spring 6. Two extension plates 7 are fixedly connected to the outer walls of the coal mining machine body 1 and the main frame body 2. The two extension plates 7 on the same side are connected by two limit bolts 8. Two through holes are provided on the outer wall of the extension plate 7. The outer wall of the limit bolt 8 is slidably connected to the two through holes on the same side.

[0023] A rubber plate 9 is slidably sleeved on the outer walls of the two limit bolts 8. Two sliding holes 10 are provided on the outer wall of the rubber plate 9. The outer wall of the limit bolt 8 and the inner wall of the sliding hole 10 are slidably connected. The rubber plate 9 has the elasticity of rubber and can be deformed after the rubber plate 9 is vibrated, thereby slowing down the vibration transmitted by the rubber plate 9.

[0024] The functional principle of the present invention can be explained through the following operation mode: when using the device to connect the coal mining machine body 1 and the main frame body 2, the worker places the two concave plates 3 on the ends of the coal mining machine body 1 and the main frame body 2 respectively, then sets the spring 6 on the two coaxial fixing sleeves 5, uses multiple fixing bolts 4 to fix the concave plates 3 on the coal mining machine body 1, and uses multiple fixing bolts 4 to fix the concave plates 3 on the main frame body 2;

[0025] Place the rubber plate 9 between the two extension plates 7 on the same side, and use the limiting bolts 8 to pass through the extension plate 7, the rubber plate 9, and the extension plate 7 in sequence, so as to fix the rubber plate 9 between the two extension plates 7, thereby fixing the device to the coal mining machine body 1 and the main frame body 2;

[0026] When the coal mining machine body 1 is working, the coal mining machine body 1 receives vibration, and when the vibration is transmitted to the rubber plate 9, the rubber plate 9 can reduce the vibration by deformation. At the same time, when the vibration of the coal mining machine body 1 is transmitted to the main frame body 2, the multiple springs 6 can reduce the vibration of the coal mining machine body 1 from being transmitted to the main frame body 2, and the device is disassembled for replacement;

[0027] Prioritize dismantling the plurality of fixing bolts 4 and the plurality of limiting bolts 8, and then have the workers take out the two concave plates 3 from the coal mining machine body 1 and the main frame body 2, and then the dismantling of the device can be completed.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A main frame connection structure of a coal mining machine, comprising a coal mining machine body (1) and a main frame body (2), characterized in that: The outer walls of the coal mining machine body (1) and the main frame body (2) are both slidably connected with a concave plate (3), and the coal mining machine body (1) and the main frame body (2) are connected to the concave plate (3) by multiple fixing bolts (4). The outer walls of the concave plate (3) are both fixedly connected with multiple fixing sleeves (5), and the inner walls of two coaxially arranged fixing sleeves (5) are slidably sleeved with the same spring (6). The outer walls of the coal mining machine body (1) and the main frame body (2) are both fixedly connected with two extension plates (7), and the two extension plates (7) located on the same side are connected by two limiting bolts (8), and the outer walls of the two limiting bolts (8) are slidably sleeved with the same rubber plate (9).

2. The main frame connection structure of the coal mining machine according to claim 1, characterized in that: Two sliding holes (10) are provided on the outer side wall of the rubber plate (9), and the outer side wall of the limiting bolt (8) and the inner side wall of the sliding hole (10) are slidably connected.

3. The main frame connection structure of the coal mining machine according to claim 1, characterized in that: Two through holes are provided on the outer side wall of the extension plate (7), and the outer side wall of the limiting bolt (8) is slidably connected to the two through holes on the same side.

4. The main frame connection structure of the coal mining machine according to claim 1, characterized in that: A plurality of threaded holes are provided on the top and bottom of the coal mining machine body (1) and the top and bottom of the main frame body (2), and the outer side wall of the fixing bolt (4) is threadedly connected to the inner side wall of the threaded hole.

5. The main frame connection structure of the coal mining machine according to claim 1, characterized in that: The plurality of fixed sleeves (5) are distributed in a rectangular array on the outer side wall of the concave plate (3).

Images