Sector type triangular coal recovery method for nearly horizontal coal seam and coal mining equipment

Abstract

The invention discloses nearly horizontal coal seam sector type triangular coal mining equipment, which relates to the field of coal mining, and comprises a coal face scraper conveyor and a reversed loader in a transportation crossheading lapped with the scraper conveyor, and a corner expansion mechanism is arranged between the scraper conveyor and the reversed loader; the corner expansion mechanism comprises a first rotating part arranged on the scraper conveyor and a second rotating part arranged on the reversed loader, and the first rotating part is rotationally connected with the second rotating part, so that the scraper conveyor and the reversed loader can be connected at an angle of 90 degrees. According to the sector type triangular coal mining equipment for the nearly horizontal coal seam, the scraper conveyor and the reversed loader are connected through the corner expansion mechanism, and when triangular coal needs to be mined, the scraper conveyor can be connected with the reversed loader through the corner expansion mechanism to rotate to the angle at which the triangular coal can be mined, so that the triangular coal can be mined; therefore, the mining of the crushed triangular coal can be realized.

Description

Technical Field

[0001] The invention relates to the field of coal mining, and in particular to a nearly horizontal coal seam fan-shaped triangular coal recovery method and coal mining equipment. Background Art

[0002] As is known, in the process of coal mining, the coal is crushed by the coal mining machine and falls onto the scraper conveyor, then transported to the transfer machine by the scraper conveyor, and then transported to the ground by the scraper conveyor mechanism. The existing scraper conveyor and transfer machine are of integrated type and split type, and each has its own advantages and disadvantages. The split operation equipment is flexible and convenient, with little mutual influence; the integrated operation equipment can fix the overlap length of the scraper conveyor and the transfer machine, ensuring that the coal output by the scraper conveyor falls better on the transfer machine.

[0003] For example, the Chinese patent document with authorization announcement number CN210001119U, announcement date 2020-01-31, and name "Right-angle turntable guide and rotation mechanism for connecting conveyor and transfer machine" includes a turntable, a bushing shaft, a locking box and a support frame; the support frame includes a support frame middle plate, a support frame bottom plate, and a support frame side plate; the support frame middle plate and the support frame bottom plate are respectively welded to the middle and bottom of the support frame side plate to form a welded assembly; the locking box is a semi-circular steel plate riveted and welded structure, and its circular diameter is slightly larger than the diameter of the turntable. The locking box is connected to the support frame and covers the outside of the turntable; the bushing shaft is a cylindrical pin, and the bushing shaft is installed on the turntable shaft; the turntable is installed in the slot in the middle plate of the support frame, and the turntable is fixed to the support frame bottom plate of the support frame through the bushing shaft. The purpose is to integrate the working face scraper conveyor with the chute transfer machine to achieve continuous right-angle change of direction movement of the chain scraper conveyor, ensuring that the scraper and coal flow can turn smoothly at right angles.

[0004] The shortcomings of the above-mentioned existing technologies are that, for integrated transfer equipment, the turning angle between the existing scraper conveyor and the transfer machine is close to 90°, but in the first and last mining periods of coal mining, there will be triangular coal (which is the corner coal existing in the coal mining process) areas. When mining the triangular coal area, the angle between the scraper conveyor and the transfer machine needs to be much larger than 90° to complete the mining of the triangular coal area. Therefore, the existing integrated equipment is not suitable for mining in the triangular coal area. Summary of the invention

[0005] The purpose of the present invention is to provide a fan-shaped triangular coal recovery method and coal mining equipment for a near-horizontal coal seam, so as to solve the above-mentioned deficiencies in the prior art and realize both separate and combined operation.

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

[0007] A fan-shaped triangular coal mining device for a near-horizontal coal seam comprises a scraper conveyor for receiving crushed coal and a transfer machine connected to the scraper conveyor, wherein a turning angle expansion mechanism is arranged between the scraper conveyor and the transfer machine; the turning angle expansion mechanism comprises a first rotating member arranged on the scraper conveyor and a second rotating member arranged on the transfer machine, wherein the first rotating member is rotatably connected to the second rotating member so that the angle between the scraper conveyor and the transfer machine is greater than 90 degrees.

[0008] In the above-mentioned fan-shaped triangular coal mining equipment for a near-horizontal coal seam, the first rotating member includes an extension rod and a connecting rod fixedly connected to the extension rod, and the second rotating member includes a rotating seat and a rotating hole opened on the rotating seat, and the connecting rod is rotatably connected to the rotating hole.

[0009] In the above-mentioned near-horizontal coal seam fan-shaped triangular coal mining equipment, the rotating seat comprises a first section and a second section which are slidably connected to each other, the first section is fixed to the transfer machine, and the second section is provided with a wedge block;

[0010] Before the connecting rod is plugged into the rotating hole, the wedge block is located on the movement stroke of the connecting rod.

[0011] In the above-mentioned fan-shaped triangular coal mining equipment for a nearly horizontal coal seam, an abutment portion is provided on the connecting rod.

[0012] In the above-mentioned fan-shaped triangular coal mining equipment for a nearly horizontal coal seam, a first elastic member is provided between the first section and the second section.

[0013] The above-mentioned fan-shaped triangular coal mining equipment for a nearly horizontal coal seam has an opening constructed on the first section.

[0014] In the above-mentioned near-horizontal coal seam fan-shaped triangular coal mining equipment, a compensation plate is rotatably provided on the transfer machine;

[0015] It also includes a power assembly for driving the compensation plate to rotate synchronously when the connecting rod rotates.

[0016] The above-mentioned fan-shaped triangular coal mining equipment for a near-horizontal coal seam, the power assembly includes a transmission rod, a fixed ring is fixedly connected to the transfer machine, the transmission rod is rotatably connected to the fixed ring, the two ends of the transmission rod are respectively fixed with a clamping rod and a first articulated seat, a clamping groove is provided on the connecting rod, the clamping rod is clamped with the clamping groove, a second articulated seat is fixedly connected to the compensation plate, and an articulated rod is arranged between the first articulated seat and the second articulated seat.

[0017] In the above-mentioned fan-shaped triangular coal mining equipment for a near-horizontal coal seam, a torsion spring is arranged between the compensation plate and the transfer machine.

[0018] A method for recovering fan-shaped triangular coal in a near-horizontal coal seam is provided, and the fan-shaped triangular coal is mined based on the above-mentioned fan-shaped triangular coal mining equipment in a near-horizontal coal seam.

[0019] In the above technical scheme, the present invention provides a near-horizontal coal seam fan-shaped triangular coal mining equipment, which connects the scraper conveyor and the transfer machine through a corner expansion mechanism. When the triangular coal needs to be mined, the scraper conveyor can be rotated relative to the transfer machine to an angle that can receive the triangular coal through the corner expansion mechanism, so that the crushed triangular coal can be transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the connection structure between a scraper conveyor and a transfer machine provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the separation structure of a scraper conveyor and a transfer machine provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the rotation process of a scraper conveyor provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the connection structure between a scraper conveyor and a transfer machine provided in another embodiment of the present invention;

[0025] Figure 5 A partial cross-sectional structural schematic diagram provided for yet another embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the overall structure of a first rotating member and a second rotating member provided in an embodiment of the present invention;

[0027] Figure 7 for Figure 1 A schematic diagram of the enlarged local structure in the middle.

[0028] Description of reference numerals:

[0029] 1. Scraper conveyor; 2. Transfer machine; 3. Extension rod; 4. Connecting rod; 5. Rotating seat; 501. First section; 502. Second section; 6. Rotating hole; 7. Wedge block; 8. Slide groove; 9. Sliding part; 10. Abutment part; 11. First elastic member; 12. Compensation plate; 1201. Third section; 1202. Fourth section; 13. Groove; 14. Transmission rod; 15. Fixed ring; 16. Clamping rod; 17. Clamping groove; 18. First hinge seat; 19. Second hinge seat; 20. Hinge rod; 21. Second elastic member; 22. Abutment plate; 23. Abutment rod; 24. Telescopic groove. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it is necessary to understand that Figure 5 The fourth section 1202 is above the third section 1201, and vice versa. Terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “degree”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial” and “circumferential” indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Reference Figure 1-7 A near-horizontal coal seam fan-shaped triangular coal mining equipment provided by an embodiment of the present invention includes a scraper conveyor 1 for receiving crushed coal and a transfer machine 2 connected to the scraper conveyor 1, and an angle expansion mechanism is arranged between the scraper conveyor 1 and the transfer machine 2; the angle expansion mechanism includes a first rotating member arranged on the scraper conveyor 1 and a second rotating member arranged on the transfer machine 2, and the first rotating member is rotatably connected to the second rotating member so that the angle between the scraper conveyor 1 and the transfer machine 2 is greater than 90 degrees.

[0033] Specifically, in the present application, the scraper conveyor 1 and the transfer machine 2 are set to be integrated. When transporting coal, the distance between the scraper conveyor 1 and the transfer machine 2 is kept consistent, so that the coal can be transported stably. In the prior art, the angle between the integrated conveyor and the transfer machine 2 is set to 90 degrees (the scraper conveyor 1 and the transfer machine 2 in the present application only show the parts of the frame), and it cannot be changed. The crushed coal will fall on the scraper conveyor 1, and then be transported to the transfer machine 2 via the scraper conveyor 1, and then transported to the ground via the transfer machine 2 and other conveying components. This is the prior art and will not be repeated. However, setting the angle between the scraper conveyor 1 and the transfer machine 2 to 90 degrees can only realize the mining of coal in normal areas. However, at the end of coal mining, there will be triangular coal (including "fan-shaped" and "knife-handle-shaped") areas. At this time, the scraper conveyor The angle between the scraper conveyor 1 and the transfer machine 2 cannot meet the conditions for mining in the triangular coal area. One of the core innovations of the embodiment of the present invention is that an angle expansion mechanism is arranged between the scraper conveyor 1 and the transfer machine 2. The angle expansion mechanism includes a first rotating member and a second rotating member, and the first rotating member and the second rotating member can be rotatably connected by a pin shaft and a pin hole. The purpose of such a setting is that when it is necessary to mine the triangular coal, it is necessary to adjust the angle between the scraper conveyor 1 and the transfer machine 2. At this time, the transfer machine 2 is kept stationary and the scraper conveyor 1 is controlled to rotate as a whole. At this time, the first rotating member rotates relative to the second rotating member to ensure that the scraper conveyor 1 and the transfer machine 2 are in a connected state, so that the scraper conveyor 1 can be rotated relative to the transfer machine 2 to an angle that can receive the triangular coal (120 degrees-140 degrees), so that the crushed coal can be transported.

[0034] It should be noted that the present application can connect the scraper conveyor 1 and the transfer machine 2 through the corner expansion mechanism for operation, and can also connect the scraper conveyor 1 and the transfer machine 2 without the corner expansion mechanism to realize their respective separate operation; that is, they can be operated separately or together. When the angle between the scraper conveyor 1 and the transfer machine 2 is greater than 90°, the first and last mining areas of the coal mining face form triangular coal, and the scraper conveyor 1 and the transfer machine 2 can be connected through the corner expansion mechanism for operation, solving the problem that the mining face equipment is prone to ups and downs when mining triangular coal, causing the scraper conveyor 1 and the transfer machine 2 to overlap too much or too little, and the transfer machine 2 is not easy to receive coal; when the angle between the scraper conveyor 1 and the transfer machine 2 is close to 90° (±6°), the scraper conveyor 1 is not easy to ups and downs, and the problem of the transfer machine 2 receiving coal when the scraper conveyor 1 overlaps too much or too little can be solved by strengthening technical management, that is, during daily coal mining at the coal mining face, the scraper conveyor 1 and the transfer machine 2 are not connected and operated separately, which is more convenient and flexible.

[0035] Preferably, the first rotating member includes an extension rod 3 and a connecting rod 4 fixed on the extension rod 3, and the second rotating member includes a rotating seat 5 and a rotating hole 6 opened on the rotating seat 5, and the connecting rod 4 is rotatably connected to the rotating hole 6. Specifically, the extension rod 3 is fixed to the surface of the scraper conveyor 1 close to the transfer machine 2, and the connecting rod 4 is preferably a cylindrical rod, the rotating seat 5 is fixed to the side of the transfer machine 2, and the rotating hole 6 is opened inside the rotating seat 5, and the size of the rotating hole 6 is adapted to the size of the connecting rod 4. The effect of such a setting is that when the scraper conveyor 1 and the transfer machine 2 are in the working state, the connecting rod 4 is plugged into the rotating hole 6, so that the scraper conveyor 1 and the transfer machine 2 are connected to each other and can rotate relative to each other, so that the rotation angle of the scraper conveyor 1 can be easily adjusted. When it is necessary to separate the scraper conveyor 1 from the transfer machine 2, the connecting rod 4 is pulled out from the rotating hole 6, and then the scraper conveyor 1 is moved in the direction away from the transfer machine 2.

[0036] As another embodiment of the present invention, the rotating seat 5 includes a first section 501 and a second section 502 that are slidably connected to each other, the first section 501 is fixedly connected to the transfer machine 2, and the second section 502 is provided with a wedge block 7; before the connecting rod 4 is inserted into the rotating hole 6, the wedge block 7 is located on the movement stroke of the connecting rod 4. Specifically, the first section 501 and the second section 502 are both provided with semicircular grooves inside. When the two are fitted together, the two semicircular grooves form a rotating hole 6. A vertically arranged slide groove 8 is opened on the end surface of the first section 501, and a sliding portion 9 is provided on the end surface of the second section 502. The sliding portion 9 is slidably connected to the slide groove 8. The wedge block 7 is arranged on the side of the second section 502 away from the first section 501, and the wedge surface of the wedge block 7 is arranged at the bottom, and the thickness of the second section 502 is less than the thickness of the first section 501. The purpose of such a setting is that when it is necessary to plug the connecting rod 4 into the rotating hole 6, the connecting rod 4 is aligned with the wedge surface of the wedge block 7, and the scraper conveyor 1 is pushed horizontally, so that the connecting rod 4 can move synchronously. When the connecting rod 4 abuts against the wedge surface of the wedge block 7, the wedge block 7 and the second section 502 will be driven to move vertically upward along the slide groove 8 (and because the thickness of the second section 502 is less than The thickness of the first section 501 is such that the second section 502 can be moved up a short distance to avoid the collision). When the connecting rod 4 coincides with the rotating hole 6, the force exerted on the wedge block 7 and the second section 502 disappears. At this time, the second section 502 and the wedge block 7 move downward along the slide 8 under the action of their own gravity. At this time, the second section 502 drops to the side of the connecting rod 4, and cooperates with the rotating hole 6 formed by the second section 502 to limit the position of the connecting rod 4, so that the connecting rod 4 and the rotating seat 5 can be connected as a whole, thereby realizing the quick connection between the scraper conveyor 1 and the transfer machine 2. When it is necessary to separate the scraper conveyor 1 from the transfer machine 2, the wedge block 7 and the second section 502 are lifted upward so that the rotating hole 6 is opened. At this time, the scraper conveyor 1 is controlled to move in a direction away from the transfer machine 2 to separate the scraper conveyor 1 from the transfer machine 2.

[0037] When the outer peripheral surface of the connecting rod 4 abuts against the wedge surface of the wedge block 7, the abutting position is only a single point, which makes the abutment unstable. Preferably, the connecting rod 4 is provided with an abutting portion 10. Specifically, the abutting portion 10 is a vertical section provided on the connecting rod 4, and the wedge surface is located on the movement stroke of the abutting portion 10. During the process of plugging the connecting rod 4 and the rotating hole 6, the abutting portion 10 abuts against the wedge surface. At this time, the abutting position is a line, thereby improving the stability of the abutment.

[0038] Furthermore, a first elastic member 11 is provided between the first section 501 and the second section 502. Specifically, the first elastic member 11 is preferably a spring, and an extension portion is provided on the end surface of the first section 501, one end of the first elastic member 11 is fixedly connected to the upper surface of the extension portion, and the other end is fixedly connected to the lower surface of the second section 502. The effect of such a setting is that when the connecting rod 4 abuts against the wedge block 7, so that the wedge block 7 and the second section 502 move upward, the first elastic member 11 will be charged, and when the connecting rod 4 and the wedge block 7 are completely abutted, the elastic force of the first elastic member 11 is released, so that the force for the wedge block 7 and the second section 502 to move downward can be provided, so that the second section 502 and the wedge block 7 can be stably reset.

[0039] Preferably, an opening is configured on the first section 501. Specifically, the opening is provided on the extension portion and is a sloped structure, so that when the connecting rod 4 is not completely aligned with the position of the rotating hole 6, the connecting rod 4 will abut against the slope and slide along the slope toward the inside of the rotating hole 6 to achieve the function of automatic deviation correction, so that the connecting rod 4 can be easily plugged into the rotating hole 6.

[0040] It should be noted that if Figure 3As shown, during the rotation of the scraper conveyor 1, a gap will be generated between the end of the scraper conveyor 1 and the transfer machine 2, which may cause part of the coal to fall from the gap during transportation. Furthermore, a compensation plate 12 is rotatably provided on the transfer machine 2; it also includes a power component for driving the compensation plate 12 to rotate synchronously when the connecting rod 4 rotates. Specifically, a groove 13 is provided on the side of the transfer machine 2, and the compensation plate 12 is rotatably arranged in the groove 13. It is a rectangular plate-shaped structure, and baffles are provided on both sides to prevent coal from falling from both sides. The compensation plate 12 is eccentrically arranged with the scraper conveyor 1, and the side of the compensation plate 12 close to the rotating seat 5 is smaller than the side away from the rotating seat 5, so that the compensation plate 12 can better receive the coal on the rotated scraper conveyor 1. The compensation plate 12 has a first position that coincides with the side of the transfer machine 2, and a second position for compensating for the gap. The power component can be a structure such as a motor for providing a rotating force. The purpose of such a setting is that when the scraper conveyor 1 is used normally, the compensation plate 12 is in the first position, and at this time, the compensation plate 12 and the side of the transfer machine 2 Overlapping, will not extend to both sides of the scraper conveyor 1, thereby can reduce its horizontal occupied space, when the scraper conveyor 1 rotates relative to the transfer machine 2, the compensation plate 12 is controlled by the power component to switch from the first position to the second position, and in this position, the compensation plate 12 is in an inclined state, so that the gap between the scraper conveyor 1 and the transfer machine 2 can be filled by the compensation plate 12, at this time, the coal transported on the scraper conveyor 1 will first fall on the compensation plate 12, and then slide down to the transfer machine 2 via the inclined surface on the compensation plate 12 to realize the transportation of the coal, when the triangular coal is mined, the scraper conveyor 1 is controlled to rotate in the opposite direction for resetting, and at the same time, the compensation plate 12 is controlled to rotate in the opposite direction by the power component to switch the compensation plate 12 from the second position to the first position.

[0041] As an alternative solution for the above-mentioned motor to drive the compensation plate 12 to switch between the first position and the second position, preferably, the power assembly includes a transmission rod 14, a fixing ring 15 is fixedly connected to the transfer machine 2, the transmission rod 14 is rotatably connected to the fixing ring 15, the two ends of the transmission rod 14 are respectively fixed with a clamping rod 16 and a first articulated seat 18, a clamping groove 17 is provided on the connecting rod 4, the clamping rod 16 is clamped with the clamping groove 17, a second articulated seat 19 is fixedly connected to the compensation plate 12, and an articulated rod 20 is arranged between the first articulated seat 18 and the second articulated seat 19. Specifically, the fixing ring 15 is arranged on the side of the transfer machine 2, the transmission rod 14 is a cylindrical rod, which is rotatably arranged in the fixing ring 15, and a limiting structure for preventing the axial movement of the two is arranged between the two. Both ends of the hinged rod 20 are arranged in a spherical shape, the first hinge seat 18 is fixedly connected to the top of the transmission rod 14 through a support rod, and the second hinge seat 19 is fixedly connected to the side wall of the compensation plate 12. The two ends of the hinged rod 20 are respectively connected to the first hinge seat 18 and the second hinge seat 19 by ball hinges, and the clamping rod 16 is fixedly connected to the bottom end of the transmission rod 14, which is L-shaped, and the vertical section of the L-shaped passes through the rotating hole 6. The clamping groove 17 is opened on the outer peripheral surface of the connecting rod 4, and its size is adapted to the vertical section of the clamping rod 16, and when the connecting rod 4 is connected to the rotating hole 6, the vertical section of the clamping rod 16 is located on the movement stroke of the clamping groove 17. The effect of such a setting is that when the connecting rod 4 is connected to the rotating hole 6, the vertical section of the clamping rod 16 is located on the movement stroke of the clamping groove 17. During the connection with the rotating hole 6, the vertical section of the clamping rod 16 will be inserted into the clamping groove 17. When the scraper conveyor 1 rotates relative to the transfer machine 2, the connecting rod 4 will rotate in the rotating hole 6, so that under the action of the connection between the clamping groove 17 and the clamping rod 16, the transmission rod 14 will be driven to rotate, thereby driving the support rod and the first hinge seat 18 to rotate around the central axis of the transmission rod 14, thereby driving the compensation plate 12 to rotate vertically through the hinge rod 20 and the second hinge seat 19, so that the compensation plate 12 is passively switched from the first position to the second position. When the triangular coal is mined, the scraper conveyor 1 is controlled to rotate in the opposite direction, thereby driving the connecting rod 4, the transmission rod 14, the first hinge seat 18 and other components to rotate in the opposite direction. Under the action of the hinge rod 20, the compensation plate 12 will be driven to rotate in the opposite direction, so that the compensation plate 12 is passively switched from the second position to the first position.

[0042] Furthermore, a torsion spring (not shown in the figure) is provided between the compensation plate 12 and the transfer machine 2. Specifically, when the compensation plate 12 is in the first position, its bottom edge abuts against the inner bottom wall of the groove 13, and the elastic force of the torsion spring makes the compensation plate 12 have a tendency to rotate toward the transfer machine 2, so that after the scraper conveyor 1 is separated from the transfer machine 2, the compensation plate 12 can be stably in the first position.

[0043] As another embodiment of the present invention, the compensation plate 12 includes a third section 1201 and a fourth section 1202 which are slidably connected to each other, and a second elastic member 21 is arranged between the third section 1201 and the fourth section 1202, an abutment plate 22 is fixedly connected to the fourth section 1202, and an abutment rod 23 is fixedly connected to the scraper conveyor 1. Specifically, the third section 1201 is rotatably connected to the groove 13, and a telescopic groove 24 adapted to the third section 1201 is provided inside the fourth section 1202. The second elastic member 21 is also preferably a spring, one end of which is fixed to the third section 1201, and the other end is fixed to the inner wall of the telescopic groove 24. The abutment rod 23 is L-shaped, which is fixed to the surface of the scraper conveyor 1 close to the transfer machine 2. The top of the vertical side of the abutment rod 23 is hemispherical, and the abutment plate 22 is obliquely arranged on the surface of the fourth section 1202 close to the scraper conveyor 1, and one end of the hemispherical abutment rod 23 abuts against the lower surface of the abutment plate 22. The purpose of such a setting is that when the scraper conveyor 1 rotates relative to the transfer machine 2, it will drive the abutment rod 23 to rotate synchronously around the central axis of the transmission rod 14. During the rotation of the abutment rod 23, its hemispherical end will abut against the lower surface of the abutment plate 22, thereby providing an abutment force to the fourth section 1202, so that the fourth section 1202 slides in the direction away from the third section 1201 and accumulates force on the second elastic member 21. In this way, the compensation plate 12 itself can be passively extended in the process of switching from the first position to the second position to better fill the gap. When the triangular coal area is mined, the scraper conveyor 1 is controlled to rotate in the opposite direction. At this time, the abutment rod 23 gradually moves away from the abutment plate 22, so the elastic force of the second elastic member 21 is gradually released, so that the fourth section 1202 slides in the direction of the third section 1201, so as to achieve passive resetting of the fourth section 1202.

[0044] Another embodiment of the present invention provides a method for recovering fan-shaped triangular coal in a near-horizontal coal seam, and the fan-shaped triangular coal is mined based on the above-mentioned fan-shaped triangular coal mining equipment in a near-horizontal coal seam.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fan-shaped triangular coal mining equipment for a near-horizontal coal seam, comprising a scraper conveyor for receiving crushed coal and a transfer machine connected to the scraper conveyor, characterized in that: A corner expansion mechanism is provided between the scraper conveyor and the transfer machine; The corner expansion mechanism includes a first rotating member arranged on the scraper conveyor and a second rotating member arranged on the transfer machine. The first rotating member is rotatably connected to the second rotating member so that the angle between the scraper conveyor and the transfer machine is greater than 90 degrees.

2. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 1 is characterized in that: The first rotating member includes an extension rod and a connecting rod fixedly connected to the extension rod, and the second rotating member includes a rotating seat and a rotating hole opened on the rotating seat, and the connecting rod is rotatably connected to the rotating hole.

3. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 2 is characterized in that: The rotating seat comprises a first section and a second section which are slidably connected to each other, the first section is fixed to the transfer machine, and the second section is provided with a wedge block; Before the connecting rod is plugged into the rotating hole, the wedge block is located on the movement stroke of the connecting rod.

4. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 3 is characterized in that: The connecting rod is provided with an abutment portion.

5. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 3 is characterized in that: A first elastic member is disposed between the first section and the second section.

6. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 3 is characterized in that: The first section is configured with an opening.

7. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 2 is characterized in that: A compensation plate is rotatably provided on the transfer machine; It also includes a power assembly for driving the compensation plate to rotate synchronously when the connecting rod rotates.

8. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 7 is characterized in that: The power assembly includes a transmission rod, a fixed ring is fixedly connected to the transfer machine, the transmission rod is rotatably connected to the fixed ring, both ends of the transmission rod are respectively fixed with a clamping rod and a first hinge seat, a clamping groove is provided on the connecting rod, the clamping rod is clamped with the clamping groove, a second hinge seat is fixedly connected to the compensation plate, and an hinge rod is arranged between the first hinge seat and the second hinge seat.

9. The nearly horizontal coal seam fan-shaped triangular coal mining equipment according to claim 7, characterized in that: A torsion spring is arranged between the compensation plate and the transfer machine.

10. A method for recovering fan-shaped triangular coal in a near-horizontal coal seam, characterized in that: The fan-shaped triangular coal mining equipment for near-horizontal coal seams described in any one of claims 1 to 9 is used to mine the fan-shaped triangular coal.

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