Composite supporting structure of steeply-inclined and large-dip-angle coal mining machine

Abstract

The invention discloses a steeply-inclined large-dip-angle coal mining machine composite supporting structure which comprises a coal mining machine body, a rail device is arranged below the coal mining machine body, a guide sliding shoe and a supporting sliding shoe are arranged at the bottom of the coal mining machine body, and the guide sliding shoe and the supporting sliding shoe are connected with the rail device in a sliding mode. The side, facing the coal wall, of the coal mining machine body is provided with a spiral roller, the side, away from the spiral roller, of the rail device is provided with an overturn-preventing guide seat, a guide shaft is supported on the overturn-preventing guide seat, the side, away from the spiral roller, of the coal mining machine body is provided with a plurality of overturn-preventing devices, and the overturn-preventing devices are in sliding connection with the guide shaft. The technical problem that in the prior art, in the steeply inclined large-angle mining process, a coal mining machine easily slides down to the coal wall and turns over is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of mining machinery, and in particular relates to a composite support structure for a steeply inclined and highly inclined coal mining machine. Background Art

[0002] my country's steeply inclined coal seams are widely distributed and of good quality. Steeply inclined coal seams account for 4% of the country's total coal reserves (about 143.2 billion tons). Although the relative amount is small, the absolute amount is large. In particular, the steeply inclined coal seams in southern Sichuan are the main mining coal seams. Its layer characteristics are accompanied by special working conditions of three soft geological structures, which are prone to coal wall spalling, roof leakage, floor crushing and sliding, making it extremely difficult to mine due to the difficulty of safe production and low efficiency.

[0003] There are many methods for mining steeply inclined coal seams in my country. Among them, the pseudo-inclined mining method has certain advantages in surrounding rock control in steeply inclined three-soft coal seams and is also the most common. However, due to the pseudo-inclined layout of the working face, the coal mining machine is inclined toward the coal wall. The design of the coal mining machine requires higher stability and anti-slip and anti-overturning performance.

[0004] At present, the azimuth angle of the common steeply inclined pseudo-inclined mining process is generally within the range of 20 degrees. The angle of the pseudo-inclined mining cannot completely solve the safety threats of coal wall spalling, roof leakage, and floor crushing and sliding in the three soft coal seams. The supporting coal mining machine for the angle of pseudo-inclined mining only enhances the mechanical properties and increases the limiting function of the support sliding shoe and the guide sliding shoe on the basis of the traditional slow-angle coal mining machine, and can only extend the wear cycle to a small extent. However, as the azimuth angle increases, the inclination angle of the coal mining machine to the coal wall increases year-on-year, and the existing technology cannot meet the stability and reliability requirements of the steeply inclined large-angle (azimuth angle>25 degrees) pseudo-inclined mining. Therefore, solving the safe and efficient mining of soft top and soft bottom coal seams above 60° is bound to have a far-reaching impact on the comprehensive mining technology and equipment technology under the conditions of steeply inclined three soft coal seams in China. Therefore, how to develop a composite support and guide device suitable for steeply inclined large-angle pseudo-inclined mining machines for the comprehensive mining technology and equipment technology under the conditions of steeply inclined three soft coal seams in China is a difficult problem that technicians in this field have been thinking about. Summary of the invention

[0005] The purpose of the present invention is to provide a composite support structure for a steeply inclined, large-angle and pseudo-inclined coal mining machine, so as to solve the technical problem in the prior art that the coal mining machine is prone to slide down and overturn toward the coal wall during the steeply inclined and large-angle mining process.

[0006] The technical solution adopted by the present invention to solve the technical problem is: A composite support structure for a steeply inclined and pseudo-inclined coal mining machine comprises: a coal mining machine body, a track device under the coal mining machine body, a guide slide shoe and a support slide shoe at the bottom of the coal mining machine body, the guide slide shoe and the support slide shoe are slidably connected to the track device, the coal mining machine body has a spiral drum on the side facing the coal wall, an anti-overturning guide seat is provided on the side of the track device away from the spiral drum, a guide shaft is supported on the anti-overturning guide seat, and the coal mining machine body has a plurality of anti-overturning devices on the side away from the spiral drum, and the anti-overturning devices are slidably connected to the guide shaft.

[0007] The present invention provides a steeply inclined, highly inclined, pseudo-inclined coal mining machine composite support structure, wherein the anti-overturning device comprises a connecting seat, the connecting seat is hinged with a connecting rod via a second pin, the bottom of the connecting rod is hinged with an anti-overturning hook via a third pin, the anti-overturning hook is slidably connected to a guide shaft, the axial direction of the second pin is parallel to the coal wall, and the axial direction of the third pin is perpendicular to the coal wall.

[0008] The invention provides a steeply inclined, large-slope pseudo-inclined coal mining machine composite support structure, wherein the connecting seat comprises a supporting transverse plate and a supporting vertical plate, and the supporting transverse plate and the supporting vertical plate are in contact with the top surface and the side surface of the coal mining machine body respectively.

[0009] The invention discloses a composite support structure for a steeply inclined and highly inclined coal mining machine. The coal mining machine body has a coal wall support device in the middle part facing the coal wall, and the coal wall support device is in sliding contact with the coal wall.

[0010] The present invention provides a composite support structure for a steeply inclined and highly inclined coal mining machine, wherein the coal wall support device includes a skid, which is a long plate-like structure. The plane where the skid is located is parallel to the coal wall. The side of the skid away from the coal wall is connected to the output end of the telescopic mechanism, and the telescopic mechanism is fixedly connected to the coal mining machine body.

[0011] The present invention provides a composite support structure for a steeply inclined, highly inclined, pseudo-inclined coal mining machine, wherein the telescopic mechanism comprises a guide shaft, a guide seat is mounted on the guide shaft, the guide seat is fixedly connected to the coal mining machine body, the end of the guide shaft is connected to a telescopic power device, and the telescopic power device is fixedly connected to the coal mining machine body.

[0012] The present invention provides a steeply inclined, highly inclined, pseudo-inclined coal mining machine composite support structure, wherein the telescopic power device is a hydraulic cylinder, and the hydraulic cylinder has a liquid inlet and a liquid return port, the liquid inlet and the liquid return port are connected to a hydraulic system, and a two-way lock is arranged in the pipeline of the hydraulic system.

[0013] The invention provides a steeply inclined, large-slope pseudo-inclined coal mining machine composite support structure, wherein both ends of the sliding skid and the coal wall facing surfaces are provided with guide inclined surfaces.

[0014] The present invention provides a steeply inclined, highly pitched, pseudo-inclined coal mining machine composite support structure, wherein the end of the telescopic power device is vertically fixedly connected to a central shaft, both ends of the central shaft are pressed by a pressure block, and the pressure block is connected to the coal mining machine body by a bolt group 2.

[0015] The present invention provides a steeply inclined, large-slope pseudo-inclined coal mining machine composite support structure, wherein the number of the telescopic power devices is two, which are respectively arranged on both sides of the ends of the skid in the length direction.

[0016] The beneficial effects of the present invention are as follows: a composite support structure for a steeply inclined, large-slope, pseudo-inclined coal mining machine is proposed, and an anti-overturning device and a coal wall support device are respectively arranged on both sides of the coal mining machine body, so as to form a two-way anti-overturning effect of one-side support and one-side stretching; and a telescopic power device is arranged in the coal wall support device, which can adjust the length after the spiral drum cuts to a depth, so as to adapt to supports with different spacings; an articulated connecting rod and an anti-turnover hook are arranged in the anti-overturning device, and the articulated axes are respectively parallel and perpendicular to the coal wall, so that the anti-overturning device has a certain lateral and longitudinal swinging function, so that a certain buffer space is provided during the anti-overturning process, rigid impact is prevented, and the service life of the device is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 is a schematic diagram of the working state of an embodiment of the present invention; Figure 2 is a top view of an embodiment of the present invention; Figure 3 is a front view of an embodiment of the present invention; Figure 4 is a cross-sectional view of an embodiment of the present invention; Figure 5 is a partial schematic diagram of a coal wall supporting device according to an embodiment of the present invention; Figure 6 It is a partial schematic diagram of the anti-overturning device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] like Figure 1-6 As shown, a steeply inclined and pseudo-inclined composite support structure of a coal mining machine comprises: a coal mining machine body 1, a track device 2 is provided below the coal mining machine body 1, a guide slide shoe 4 and a support slide shoe 5 are provided at the bottom of the coal mining machine body 1, the guide slide shoe 4 and the support slide shoe 5 are slidably connected to the track device 2, the coal mining machine body 1 has a spiral drum 8 on the side facing the coal wall, an anti-overturning guide seat 3 is provided on the side of the track device 2 away from the spiral drum 8, a guide shaft 3-1 is supported on the anti-overturning guide seat 3, and a plurality of anti-overturning devices 7 are provided on the side of the coal mining machine body 1 away from the spiral drum 8, and the anti-overturning devices 7 are slidably connected to the guide shaft 3-1.

[0020] It should be noted that the track device 2 is fixedly connected to the base plate, and the length of the guide shaft 3-1 is the same as the length of the track device 2, and the track device 2 usually includes a pin rail 2-1, and the anti-overturning guide seat 3 is connected to the track device 2 by bolts or other detachable structures.

[0021] In a preferred embodiment of the present invention, the anti-overturning device 7 includes a connecting seat 7-1, the connecting seat 7-1 is hinged with a connecting rod 7-3 through a pin shaft 2 7-2, the bottom of the connecting rod 7-3 is hinged with an anti-overturn hook 7-4 through a pin shaft 3 7-5, the anti-overturn hook 7-4 is slidably connected to the guide shaft 3-1, the axial direction of the pin shaft 2 7-2 is parallel to the coal wall, and the axial direction of the pin shaft 3 7-5 is perpendicular to the coal wall.

[0022] It should be noted that such an arrangement allows the connecting rod 7-3 to swing in a plane perpendicular to the coal wall, and the anti-flip hook 7-4 can swing in a plane parallel to the coal wall relative to the connecting rod 7-3, thereby having a certain buffer space.

[0023] In a preferred embodiment of the present invention, the connecting seat 7-1 includes a supporting transverse plate 7-1-1 and a supporting vertical plate 7-1-2, and the supporting transverse plate 7-1-1 and the supporting vertical plate 7-1-2 are in contact with the top surface and the side surface of the coal mining machine body 1 respectively.

[0024] It should be noted that the coal mining machine body 1 is composed of a left traction part 1-1, a right traction part 1-2, an electronic control part 1-3, and a walking part 1-4, wherein there are two connecting seats 7-1, which are respectively on the left traction part 1-1 and the walking part 1-4, and on the right traction part 1-2 and the walking part 1-4, and are connected by a bolt group.

[0025] In a preferred embodiment of the present invention, a coal wall supporting device 6 is provided in the middle of the coal mining machine body 1 facing the coal wall, and the coal wall supporting device 6 is in sliding contact with the coal wall.

[0026] In a preferred embodiment of the present invention, the coal wall supporting device 6 includes a skid 6-1, which is a long plate-like structure. The plane where the skid 6-1 is located is parallel to the coal wall. The side of the skid 6-1 away from the coal wall is connected to the output end of the telescopic mechanism, and the telescopic mechanism is fixedly connected to the coal mining machine body 1.

[0027] In a preferred embodiment of the present invention, the telescopic mechanism includes a guide shaft 6-3, a guide seat 6-4 is mounted on the guide shaft 6-3, the guide seat 6-4 is fixedly connected to the coal mining machine body 1, the end of the guide shaft 6-3 is connected to the telescopic power device 6-7, and the telescopic power device 6-7 is fixedly connected to the coal mining machine body 1.

[0028] It should be noted that the front end of the guide shaft 6-3 is connected to the skid 6-1 through a pin shaft 6-2, the guide seat 6-4 is connected to the top of the electrical control unit 1-3 of the coal mining machine body 1 through a bolt group 6-5, and a guide sleeve 6-6 is installed between the guide seat 6-4 and the guide shaft 6-3.

[0029] In a preferred embodiment of the present invention, the telescopic power device 6-7 is a hydraulic cylinder having a liquid inlet 6-12 and a liquid return port 6-11, the liquid inlet 6-12 and the liquid return port 6-11 are connected to a hydraulic system, and a two-way lock is provided in the pipeline of the hydraulic system.

[0030] In a preferred embodiment of the present invention, both ends of the sliding skid 6-1 facing the coal wall have guiding inclined surfaces 6-1-1.

[0031] In a preferred embodiment of the present invention, the end of the telescopic power device 6-7 is vertically fixedly connected with a central shaft 6-8, and both ends of the central shaft 6-8 are pressed by a pressure block 6-9, and the pressure block 6-9 is connected to the coal mining machine body 1 through a bolt group 6-10.

[0032] In a preferred embodiment of the present invention, there are two telescopic power devices 6-7, which are respectively arranged on both sides of the ends of the slide 6-1 in the length direction, so that the slide 6-1 can be subjected to more uniform force.

[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure, comprising: A coal mining machine body (1), wherein a track device (2) is provided below the coal mining machine body (1), wherein a guide slide shoe (4) and a support slide shoe (5) are provided at the bottom of the coal mining machine body (1), wherein the guide slide shoe (4) and the support slide shoe (5) are slidably connected to the track device (2), wherein the coal mining machine body (1) has a spiral drum (8) on the side facing the coal wall, and wherein the side of the track device (2) away from the spiral drum (8) has an anti-overturning guide seat (3), wherein a guide shaft (3-1) is supported on the anti-overturning guide seat (3), and wherein the side of the coal mining machine body (1) away from the spiral drum (8) has a plurality of anti-overturning devices (7), wherein the anti-overturning devices (7) are slidably connected to the guide shaft (3-1).

2. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 1 is characterized in that: The anti-overturning device (7) comprises a connecting seat (7-1), the connecting seat (7-1) being hingedly connected to a connecting rod (7-3) via a second pin shaft (7-2), the bottom of the connecting rod (7-3) being hingedly connected to an anti-overturning hook (7-4) via a third pin shaft (7-5), the anti-overturning hook (7-4) being slidably connected to a guide shaft (3-1), the axial direction of the second pin shaft (7-2) being parallel to the coal wall, and the axial direction of the third pin shaft (7-5) being perpendicular to the coal wall.

3. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 2 is characterized in that: The connecting seat (7-1) comprises a supporting transverse plate (7-1-1) and a supporting vertical plate (7-1-2), and the supporting transverse plate (7-1-1) and the supporting vertical plate (7-1-2) are respectively in contact with the top surface and the side surface of the coal mining machine body (1).

4. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 1 is characterized in that: A coal wall supporting device (6) is provided at the middle of the coal mining machine body (1) facing the coal wall, and the coal wall supporting device (6) is in sliding contact with the coal wall.

5. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 4 is characterized in that: The coal wall supporting device (6) comprises a skid (6-1), the skid (6-1) is in the form of a long plate, the plane where the skid (6-1) is located is parallel to the coal wall, the side of the skid (6-1) away from the coal wall is connected to the output end of the telescopic mechanism, and the telescopic mechanism is fixedly connected to the coal mining machine body (1).

6. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 5 is characterized in that: The telescopic mechanism comprises a guide shaft (6-3), a guide seat (6-4) is mounted on the guide shaft (6-3), the guide seat (6-4) is fixedly connected to the coal mining machine body (1), the end of the guide shaft (6-3) is connected to a telescopic power device (6-7), and the telescopic power device (6-7) is fixedly connected to the coal mining machine body (1).

7. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 6 is characterized in that: The telescopic power device (6-7) is a hydraulic cylinder having a liquid inlet (6-12) and a liquid return port (6-11). The liquid inlet (6-12) and the liquid return port (6-11) are connected to a hydraulic system, and a two-way lock is provided in the pipeline of the hydraulic system.

8. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 5 is characterized in that: Both ends of the sliding skid (6-1) facing the coal wall are provided with guiding inclined surfaces (6-1-1).

9. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 6 is characterized in that: The end of the telescopic power device (6-7) is vertically fixedly connected to a mandrel (6-8), both ends of the mandrel (6-8) are pressed by a pressing block (6-9), and the pressing block (6-9) is connected to the coal mining machine body (1) by a second bolt group (6-10).

10. The steeply inclined, large-slope, pseudo-inclined coal mining machine composite support structure according to claim 6 is characterized in that: The number of the telescopic power devices (6-7) is two, which are respectively arranged on both sides of the ends of the sliding sled (6-1) in the length direction.

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