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

Abstract

The utility model 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 utility model belongs to the technical field of mining machinery, in particular to a composite supporting structure of a steeply inclined and highly inclined pseudo-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. Utility Model Content

[0005] The purpose of the utility model 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 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 in the above-mentioned prior art.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A composite support structure for a steeply inclined large dip pseudo-inclined shearer, comprising: a shearer body, a track device is provided below the shearer body, a guiding sliding shoe and a supporting sliding shoe are provided at the bottom of the shearer body, the guiding sliding shoe and the supporting sliding shoe are slidably connected to the track device, a spiral drum is provided on one side of the shearer body facing the coal wall, an anti-overturning guiding seat is provided on the track device on the side away from the spiral drum, a guiding shaft is supported on the anti-overturning guiding seat, a plurality of anti-overturning devices are provided on the side of the shearer body away from the spiral drum, and the anti-overturning devices are slidably connected to the guiding shaft.

[0008] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, the anti-overturning device comprises a connecting seat, the connecting seat is hinged with a connecting rod through a second pin shaft, the bottom of the connecting rod is hinged with an anti-overturning hook through a third pin shaft, the anti-overturning hook is slidably connected to the guiding shaft, the axial direction of the second pin shaft is parallel to the coal wall, and the axial direction of the third pin shaft is perpendicular to the coal wall.

[0009] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, the connecting seat comprises a supporting cross plate and a supporting vertical plate, and the supporting cross plate and the supporting vertical plate are respectively in contact with the top surface and the side surface of the shearer body.

[0010] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, a coal wall support device is provided in the middle of the side of the shearer body facing the coal wall, and the coal wall support device is in sliding contact with the coal wall.

[0011] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, the coal wall support device comprises a skid, the skid is in 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 a telescopic mechanism, and the telescopic mechanism is fixedly connected to the shearer body.

[0012] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, the telescopic mechanism comprises a guide shaft, a guiding seat is sleeved on the guide shaft, the guiding seat is fixedly connected to the shearer body, the end of the guide shaft is connected to a telescopic power device, and the telescopic power device is fixedly connected to the shearer body.

[0013] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, the telescopic power device is a hydraulic cylinder, the hydraulic cylinder is provided with 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 provided in the pipeline of the hydraulic system.

[0014] In the composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model, both ends of the surface of the skid facing the coal wall are provided with guiding inclined surfaces.

[0015] A composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model. The end of the telescopic power device is vertically and fixedly connected with a mandrel, and both ends of the mandrel are clamped by pressing blocks, and the pressing blocks are connected to the shearer body through bolt group II.

[0016] A composite support structure for a steeply inclined large dip pseudo-inclined shearer of the present utility model. The number of the telescopic power devices is two, which are respectively arranged on both sides of the end of the skid in the length direction.

[0017] The beneficial effects produced by the present utility model are as follows: A composite support structure for a steeply inclined large dip pseudo-inclined shearer is proposed. By respectively arranging an anti-overturning device and a coal wall support device on both sides of the shearer body, a two-way anti-tipping effect of one-side support and one-side stretching is formed; and a telescopic power device is arranged in the coal wall support device, which can adjust the length after the cutting depth of the helical drum, so as to adapt to the support with different spacings; by arranging a hinged connecting rod and an anti-flipping hook in the anti-overturning device, and their hinge axes are respectively parallel and perpendicular to the coal wall, the anti-overturning device has a certain lateral and longitudinal swinging function, so that there is a certain buffer space during the anti-overturning process, preventing rigid impact and extending the service life of the device. Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0019] Figure 1 is a schematic diagram of the working state of an embodiment of the present utility model;

[0020] Figure 2 is a top view of an embodiment of the present utility model;

[0021] Figure 3 is a front view of an embodiment of the present utility model;

[0022] Figure 4 is a sectional view of an embodiment of the present utility model;

[0023] Figure 5 is a partial schematic diagram of the coal wall support device of an embodiment of the present utility model;

[0024] Figure 6 is a partial schematic diagram of the anti-overturning device of an embodiment of the present utility model. Detailed Embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0026] As Figures 1-6 shown, a composite support structure for a steeply inclined large dip pseudo-inclined shearer includes: a shearer body 1, a track device 2 is provided below the shearer body 1, a guiding slide shoe 4 and a supporting slide shoe 5 are provided at the bottom of the shearer body 1, the guiding slide shoe 4 and the supporting slide shoe 5 are slidably connected to the track device 2, a spiral drum 8 is provided on one side of the shearer body 1 facing the coal wall, an anti-overturning guiding seat 3 is provided on the track device 2 on the side far from the spiral drum 8, a guiding shaft 3-1 is supported on the anti-overturning guiding seat 3, and a plurality of anti-overturning devices 7 are provided on the side of the shearer body 1 far from the spiral drum 8, and the anti-overturning devices 7 are slidably connected to the guiding shaft 3-1.

[0027] It should be noted that the track device 2 is fixedly connected to the floor, and the length of the guiding 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 guiding seat 3 is connected to the track device 2 by bolts or other detachable structures.

[0028] In a preferred embodiment of the present utility model, 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 second pin shaft 7-2, the bottom of the connecting rod 7-3 is hinged with an anti-overturning hook 7-4 through a third pin shaft 7-5, the anti-overturning hook 7-4 is slidably connected to the guiding shaft 3-1, the axial direction of the second pin shaft 7-2 is parallel to the coal wall, and the axial direction of the third pin shaft 7-5 is perpendicular to the coal wall.

[0029] It should be noted that such a setting enables the connecting rod 7-3 to swing in a plane perpendicular to the coal wall, and the anti-overturning 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.

[0030] In a preferred embodiment of the present utility model, the connecting seat 7-1 includes a supporting cross plate 7-1-1 and a supporting vertical plate 7-1-2, and the supporting cross 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 shearer body 1.

[0031] It should be noted that the coal shearer body 1 is composed of a left traction unit 1-1, a right traction unit 1-2, an electric control unit 1-3, and a traveling unit 1-4. The number of connecting seats 7-1 is two, which are respectively on the left traction unit 1-1 and the traveling unit 1-4, and on the right traction unit 1-2 and the traveling unit 1-4, and are connected by a bolt group.

[0032] In a preferred embodiment of the present invention, a coal wall support device 6 is provided in the middle of the side of the coal shearer body 1 facing the coal wall, and the coal wall support device 6 is in sliding contact with the coal wall.

[0033] In a preferred embodiment of the present invention, the coal wall support device 6 includes a skid 6-1. The skid 6-1 has 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 shearer body 1.

[0034] In a preferred embodiment of the present invention, the telescopic mechanism includes a guide shaft 6-3. A guide seat 6-4 is sleeved on the guide shaft 6-3. The guide seat 6-4 is fixedly connected to the coal shearer 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 shearer body 1.

[0035] 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 electric control unit 1-3 of the coal shearer body 1 through a bolt group 6-5. A guide sleeve 6-6 is sleeved between the guide seat 6-4 and the guide shaft 6-3.

[0036] In a preferred embodiment of the present invention, the telescopic power device 6-7 is a hydraulic cylinder. The hydraulic cylinder has 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.

[0037] In a preferred embodiment of the present invention, both ends of the side of the skid 6-1 facing the coal wall have guide inclined surfaces 6-1-1.

[0038] In a preferred embodiment of the present invention, a mandrel 6-8 is vertically and fixedly connected to the end of the telescopic power device 6-7. Both ends of the mandrel 6-8 are pressed by pressing blocks 6-9, and the pressing blocks 6-9 are connected to the coal shearer body 1 through a bolt group 6-10.

[0039] In a preferred embodiment of the present invention, the number of the telescopic power devices 6-7 is two, which are respectively arranged on both sides of the end of the skid 6-1 in the length direction, so that the force on the skid 6-1 is more uniform.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0042] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

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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