Coal mine fully-mechanized face construction structure

Abstract

The invention relates to the technical field of coal mine construction, and discloses a coal mine fully-mechanized face construction structure which comprises a hydraulic support, a coordination mechanism arranged in the oblique notches and used for providing a supporting space for a fully-mechanized face coal mine in a working state, and an intermittent mechanism arranged in the hydraulic support and used for providing a supporting space for the fully-mechanized face coal mine in a working state. The intermittent mechanism is fixed to the surface of the hydraulic support and located at the symmetrical center axis of the two sets of inclined notches, real-time falling optimization is conducted on the coal flow track of fully-mechanized face top coal on the basis of displacement and unfolding cooperation of the coordination mechanism, and the execution mechanism is fixed to the surface of the hydraulic support in an embedded mode. And through arrangement of the intermittent mechanism, the execution mechanism and the coordination mechanism, when a coal mine moves on the hydraulic support, real-time falling optimization is conducted on the coal flow track of the fully-mechanized face top coal. A space is generated behind the hydraulic support, the coal mine makes contact with a trapezoidal interval formed by the vertical plate and the movable plate, and therefore the coal mine guiding space is constructed, the falling guiding space is generated, the coal flow motion state is adjusted and controlled, and meanwhile the large-size collision probability of the coal mine to the conveying device is reduced.

Description

Technical Field

[0001] The present invention relates to the field of coal mine construction, and more particularly to a fully mechanized mining face construction structure of a coal mine. Background Art

[0002] The fully mechanized mining face of a coal mine is the core operating unit of modern coal mining. The entire process of coal mining is an integrated operating unit of coal breaking → coal loading → coal transportation → support → roof control. When the coal mining machine is working, an auxiliary construction structure is required to move synchronously with the coal mining machine to complete the support and working face advancement. At the same time, the coal mining place of the auxiliary construction structure and the fallen coal at the rear are collected and transported through the conveying device.

[0003] Although the above technical solution has solved the problem well, in actual operation, due to the influence of mining stress disturbance and coal seam joint development on the roadway, the coal body at the top of the roadway is prone to local spalling or overall instability, resulting in uncontrollable fall of the coal mine at the top of the roadway of the comprehensive mining face. When the top coal spalls abnormally, a large amount of broken coal will accumulate instantly, which will produce a chain disaster effect. The falling coal body exceeds the instantaneous processing capacity of the conveying system, causing equipment overload shutdown or transportation channel blockage. Secondly, when the coal mine is at the top of the roadway, top coal extrusion retention may also occur. The coal body at the top of the roadway forms a mechanical equilibrium arch structure due to uneven distribution of surrounding rock pressure, which makes the coal body unable to fall naturally to the conveying device. After the work on the comprehensive mining face is completed, the staff also needs to perform secondary processing on the coal body. After the top coal mine is processed, the remaining part will be subjected to roadway support processing. Summary of the Invention

[0004] The present invention provides a coal mine fully mechanized mining face construction structure, which solves the technical problem in the related art that the coal mine fall during coal mine construction is uncontrollable, resulting in excessive falling coal or top coal extrusion retention.

[0005] The present invention provides a coal mine fully mechanized mining face construction structure, comprising:

[0006] Hydraulic support, with oblique notches on the surface of the hydraulic support;

[0007] The coordination mechanism is set inside the oblique notch and provides support space for the fully mechanized coal mining face in working state;

[0008] The intermittent mechanism is installed inside the hydraulic support and is located at the symmetrical center axis of the two sets of oblique notches. It cooperates with the coordination mechanism based on the displacement of the coordination mechanism to optimize the coal flow trajectory of the top coal in the fully mechanized mining face in real time.

[0009] The actuator is embedded and fixed on the surface of the hydraulic support and is used to cooperate with the driving coordination mechanism and the intermittent mechanism to perform setting work.

[0010] Preferably, the coordination mechanism comprises a vertical plate arranged inside the oblique slot, a telescopic cylinder symmetrically arranged inside the vertical plate with the central axis of the vertical plate as a symmetry reference, and a fixed block fixedly connected to the end of the telescopic cylinder.

[0011] Preferably, the fixed blocks are all fixedly connected to the inner wall of the hydraulic support and are on the same horizontal line.

[0012] Preferably, the intermittent mechanism includes a carrier block arranged inside the hydraulic support, a long rod is rotatably connected inside the carrier block, a rectangular slot is provided on the surface of the long rod close to the center of gravity of the ground, and a roller is provided through the rectangular slot, a spring is provided on the side of the long rod close to the rectangular slot, a matching piece is provided inside the long rod, a movable plate is provided on the surface of the matching piece, and a pull net is provided on the surface of the movable plate.

[0013] Preferably, the matching piece comprises a rectangular block arranged inside the long rod, two groups of limiting holes with different radii are opened inside the rectangular block, and the main rod and the auxiliary rod are respectively arranged through the limiting holes.

[0014] Preferably, the pulling net is fixedly connected to the two groups of vertical plates and the outer surface of the hydraulic support respectively, and has a certain elastic force.

[0015] Preferably, the main rod and the auxiliary rod are fixedly connected to the inside of the hydraulic support.

[0016] Preferably, the movable plate is an integrally formed structure combining a Z-shape and a straight shape.

[0017] Preferably, the actuator includes a drive motor fixedly connected to the surface of the hydraulic support, the output end of the drive motor is fixedly connected to the carrier rod, the middle section of the carrier rod is provided with a second cam, and the surface of the carrier rod is provided with a first cam on both sides of the second cam.

[0018] Preferably, the cam 1 overlaps with the vertical plate, the cam 2 overlaps with the roller body, and the axes of the two groups of cams 1 and cam 2 are on the same horizontal line.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention adopts technical means that cooperate with coal mine construction and coal mine construction. Through the setting of intermittent mechanisms, executive mechanisms and coordination mechanisms, when the hydraulic support moves, space is generated behind the hydraulic support, and the coal mine contacts the trapezoidal interval formed by the vertical plate and the movable plate, thereby constructing a coal mine guide, creating a space to guide the fall, realizing the regulation of the coal flow movement state, and at the same time reducing the probability of large-volume collision of the coal mine with the conveying device.

[0021] 2. When the coal falls into the inclination of the hydraulic support, the vertical plate and the movable plate are lifted by the actuator. The coal first contacts the vertical plate. In the initial working state, the height of the vertical plate is greater than the movable plate. After contacting the movable plate between the vertical plates, the coal is sent to the conveying device below along the inclination angle of the hydraulic support, reducing the direct distance the coal falls. The movable plate makes contact first and then is sent out through the guidance of the vertical plate, reducing the impact damage to the hydraulic support, extending the service life and reducing construction costs.

[0022] 3. Through the setting of the pulling net, vertical plate and movable plate, when the coal mine contacts the mesh surface of the pulling net, due to the lifting of the movable plate, the coal mine falls into the pulling net in contact with the movable plate on the hydraulic support, and is retained in the pulling net space where the movable plate is lifted. When the movable plate drops, the flowing coal rolls from the mesh surface of the pulling net to the surface of the movable plate, producing a quantitative coal falling effect. At the same time, the pulling net connecting the movable plate and the vertical plate is tilted, and the flowing coal intercepted by the vertical plate also falls into the surface of the movable plate through the pulling net, while protecting the hydraulic support from large pieces of coal falling into the interior, causing damage to electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a partial isolated schematic diagram of the overall structure of the present invention;

[0025] Figure 3 is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0026] Figure 4 It is a schematic diagram of the structure of the actuator of the present invention;

[0027] Figure 5 It is a partial cross-sectional structural schematic diagram of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the intermittent mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the isolated structure of the movable plate of the present invention;

[0030] Figure 8 It is a schematic diagram of the coordination mechanism structure of the present invention.

[0031] In the figure: 100, hydraulic support; 101, oblique notch; 200, coordination mechanism; 201, vertical plate; 202, telescopic cylinder; 203, fixed block; 300, intermittent mechanism; 301, carrier block; 302, long rod; 303, roller; 304, spring; 305, mating part; 3051, rectangular block; 3052, main rod; 3053, auxiliary rod; 306, movable plate; 307, pulling net; 400, actuator; 401, drive motor; 402, carrier rod; 403, cam 1; 404, cam 2. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. Furthermore, features described in some examples may be combined in other examples.

[0033] like Figure 1 - Figure 8 As shown, a coal mine fully mechanized mining face construction structure includes:

[0034] The hydraulic support 100 has relatively inclined slots 101 on its surface. The coordination mechanism 200 is arranged inside the inclined slots 101. In the working state, it provides support space for the fully-mechanized coal mine face. The intermittent mechanism 300 is arranged inside the hydraulic support 100 and is located at the symmetrical center axis of the two groups of inclined slots 101. Based on the displacement of the coordination mechanism 200, it cooperates with it to perform real-time falling optimization of the coal flow trajectory of the top coal of the fully-mechanized coal mining face. The actuator 400 is embedded and fixed on the surface of the hydraulic support 100 and is used to cooperate with the driving coordination mechanism 200 and the intermittent mechanism 300 to perform the setting work.

[0035] The coordination mechanism 200 includes a vertical plate 201 disposed inside the oblique slot 101 , and a telescopic cylinder 202 symmetrically disposed inside the vertical plate 201 with the central axis of the vertical plate 201 as a symmetry reference. The end of the telescopic cylinder 202 is fixedly connected to a fixed block 203 .

[0036] The vertical plate 201 slides inside the two sets of oblique slots 101, making synchronous reciprocating motion up and down. When the vertical plate 201 moves to the maximum stroke, that is, the maximum height of the lift, it will touch the large pieces of coal. The coal at the construction site may be squeezed against each other and cannot fall down. Or when the coal mine and the top of the construction tunnel are loose but still difficult to fall down, the vertical plate 201 will touch the coal mine, contacting the looser coal mine, causing it to fall down (the contact pressure between coal blocks in the squeezed state can reach 0.5-3MPa (take The effective friction coefficient of the contact surface is significantly increased (dry coal block μ≈0.6-0.8, water-containing coal block μ≈0.3-0.5) or because the edges and corners of the coal blocks are embedded in the adjacent coal body (the embedding depth can reach 1-5mm), forming a mechanical interlocking structure), so when the vertical plate 201 comes into contact, the shear strength of the coal mine is overcome, the arch foot support point is destroyed, and then the coal mine falls into the space formed by the two vertical plates 201, and then falls to the conveyor for transportation through the intermittent mechanism 300.

[0037] It is worth mentioning that due to the restrictions of the two sets of oblique slots 101 and the telescopic cylinder 202, the vertical plate 201 will not deviate during the reciprocating stroke, and some coal may be squeezed to the outer side of the vertical plate 201, so the movement trajectory of the vertical plate 201 needs to be limited multiple times.

[0038] The fixed blocks 203 are all fixedly connected to the inner wall of the hydraulic support 100 and are on the same horizontal line.

[0039] The intermittent mechanism 300 includes a carrier block 301 arranged inside the hydraulic support 100, and a long rod 302 is rotatably connected inside the carrier block 301. A rectangular slot is provided on the surface of the long rod 302 near the center of gravity of the ground, and a roller body 303 is provided through the rectangular slot. A spring 304 is provided on the side of the long rod 302 near the rectangular slot. A matching piece 305 is provided inside the long rod 302, and a movable plate 306 is provided on the surface of the matching piece 305. A pull net 307 is provided on the surface of the movable plate 306.

[0040] The roller 303 is driven to move by the cam 2 404 of the actuator 400, and is limited by the carrier block 301 fixedly connected to the hydraulic support 100, so that the long rod 302 moves in an arc in the vertical direction. When the cam 2 404 moves to the maximum vertex, the long rod 302 moves to the maximum angle. At this time, the movable plate 306 is lifted and moves to the maximum stroke, generating the maximum height and angle (it may contact the unfallen coal on the construction surface, causing it to loosen and then fall onto the surface of the movable plate 306), so as to pick up the coal at the construction site. When the long rod 302 moves toward the surface, the movable plate 306 moves in the opposite direction to receive the coal and the loose coal at the construction site. At the same time, the vertical plate 201 and the movable plate 306 have a height difference due to the control of the actuator 400, so that the coal falls on the movable plate 306 in a guided manner. At this time, the movable plate 306 is lifted, driving the pull net 307 between the movable plate 306 and the hydraulic support 100 to be lifted. The pull net 307 is stretched into an inclined surface to intercept the coal that is about to contact the movable plate 306. When the movable plate 306 approaches the hydraulic support 100, the pull net 307 becomes smaller, and the coal falls back onto the surface of the movable plate 306, forming a quantitative distribution effect.

[0041] The fitting member 305 includes a rectangular block 3051 disposed inside the long rod 302 . Two groups of limiting holes with different radii are opened inside the rectangular block 3051 , and a main rod 3052 and a secondary rod 3053 are respectively disposed through the limiting holes.

[0042] The matching piece 305 is used to lift or lower the movable plate 306, while the main rod 3052 and the auxiliary rod 3053 are fixedly connected to the inside of the hydraulic support 100 to perform secondary limiting on the rectangular block 3051 to prevent the rectangular block 3051 from rotating too much and causing deflection, and the spring 304 assists in pulling the long rod 302 back.

[0043] The pulling net 307 is fixedly connected to the two groups of vertical plates 201 and the outer surface of the hydraulic support 100 respectively, and has a certain elastic force.

[0044] The main rod 3052 and the auxiliary rod 3053 are fixedly connected to the interior of the hydraulic support 100 .

[0045] The movable plate 306 is an integrally formed structure combining a Z-shape and a straight shape.

[0046] The actuator 400 includes a drive motor 401 fixedly connected to the surface of the hydraulic support 100, the output end of the drive motor 401 is fixedly connected to the carrier rod 402, the middle section of the carrier rod 402 is provided with a cam 2 404, and the surface of the carrier rod 402 is provided with cams 1 403 on both sides of the cam 2 404.

[0047] Cam 1 403 drives the vertical plate 201 to move, and cam 2 404 drives the roller body 303 to work, and the stroke of cam 1 403 is greater than the stroke of cam 2 404, so that when the vertical plate 201 moves close to the construction surface, its height is higher than the height of the movable plate 306, forming a height difference between the vertical plate 201 and the movable plate 306.

[0048] It is worth noting that the actuator 400 can be replaced, and the lifting of the vertical plate 201 and the movable plate 306 can be replaced with a gas rod, but the two vertical plates 201 still need to be lifted or lowered at the same horizontal line. When the vertical plate 201 reaches the maximum height, the height of the movable plate 306 is still higher than that of the movable plate 306, forming a height difference.

[0049] The cam 1 403 overlaps with the vertical plate 201 , and the cam 2 404 overlaps with the roller body 303 , and the axes of the two sets of cams 1 403 and cam 2 404 are on the same horizontal line.

[0050] Working principle:

[0051] When the device is under construction at the fully mechanized mining face, after the coal mine at the fully mechanized mining face is mined, the device moves to the next area. At this time, the height of the hydraulic support 100 drops a certain height, and then the inclined surface of the hydraulic support 100 starts to work, and the driving motor 401 drives the carrying rod 402 to work, and the carrying rod 402 drives the cam 1 403 and the cam 2 404 to work, driving the vertical plate 201 and the movable plate 306. The vertical plate 201 contacts the top of the tunnel, and the loose coal is squeezed and scattered by each other, and then falls onto the surface of the movable plate 306. The movable plate 306 divides the coal into two parts through the pulling net 307 in contact with the hydraulic support 100. One part contacts the movable plate 306 and falls to the conveyor belt below, and the other part is intercepted by the inclination generated by the pulling net 307 and the movable plate 306. Subsequently, due to the descent of the movable plate 306, the coal intercepted by the pulling net 307 is sent to the movable plate 306, and then sent out through the inclined surface of the movable plate 306.

[0052] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A coal mine fully mechanized mining face construction structure, characterized by: include; A hydraulic support (100), wherein oblique notches (101) are formed on the surfaces of the hydraulic support (100); The coordination mechanism (200) is arranged inside the oblique notch (101) and provides a support space for the fully mechanized coal mining face in a working state; The intermittent mechanism (300) is arranged inside the hydraulic support (100) and is located at the symmetrical central axis of the two groups of oblique notches (101). Based on the displacement of the coordination mechanism (200), the intermittent mechanism (300) cooperates with the coordination mechanism (200) to perform real-time drop optimization on the coal flow trajectory of the top coal of the fully mechanized mining face. The actuator (400) is embedded and fixed on the surface of the hydraulic support (100) and is used to cooperate with the driving coordination mechanism (200) and the intermittent mechanism (300) to perform setting work.

2. A coal mine fully mechanized mining face construction structure according to claim 1, characterized in that: The coordination mechanism (200) comprises a vertical plate (201) arranged inside the oblique notch (101), a telescopic cylinder (202) symmetrically arranged inside the vertical plate (201) with the central axis of the vertical plate (201) as a symmetry reference, and a fixed block (203) is fixedly connected to the end of the telescopic cylinder (202).

3. A coal mine fully mechanized mining face construction structure according to claim 2, characterized in that: The fixed blocks (203) are all fixedly connected to the inner wall of the hydraulic support (100) and are located on the same horizontal line.

4. A coal mine fully mechanized mining face construction structure according to claim 3, characterized in that: The intermittent mechanism (300) includes a carrier block (301) arranged inside the hydraulic support (100), a long rod (302) is rotatably connected inside the carrier block (301), a rectangular notch is opened on the surface of the long rod (302) close to the center of gravity of the ground, and a roller body (303) is arranged through the rectangular notch, a spring (304) is arranged on the side of the surface of the long rod (302) close to the rectangular notch, a matching piece (305) is arranged inside the long rod (302), a movable plate (306) is arranged on the surface of the matching piece (305), and a pull net (307) is arranged on the surface of the movable plate (306).

5. A coal mine fully mechanized mining face construction structure according to claim 4, characterized in that: The matching piece (305) comprises a rectangular block (3051) arranged inside the long rod (302), wherein two groups of limiting holes with different radii are opened inside the rectangular block (3051), and a main rod (3052) and a secondary rod (3053) are respectively arranged through the limiting holes.

6. A coal mine fully mechanized mining face construction structure according to claim 5, characterized in that: The pulling net (307) is fixedly connected to the two groups of vertical plates (201) and the outer surface of the hydraulic support (100), and has a certain elastic force.

7. A coal mine fully mechanized mining face construction structure according to claim 6, characterized in that: The main rod (3052) and the auxiliary rod (3053) are fixedly connected to the inside of the hydraulic support (100).

8. A coal mine fully mechanized mining face construction structure according to claim 7, characterized in that: The movable plate (306) is an integrally formed structure combining a Z-shape and a straight shape.

9. A coal mine fully mechanized mining face construction structure according to claim 8, characterized in that: The actuator (400) comprises a driving motor (401) fixedly connected to the surface of the hydraulic support (100); the output end of the driving motor (401) is fixedly connected to a carrier rod (402); a second cam (404) is provided in the middle section of the carrier rod (402); and a first cam (403) is provided on the surface of the carrier rod (402) on both sides of the second cam (404).

10. A coal mine fully mechanized mining face construction structure according to claim 9, characterized in that: The cam 1 (403) is overlapped with the vertical plate (201), and the cam 2 (404) is overlapped with the roller body (303), and the axes of the two groups of cams 1 (403) and cam 2 (404) are on the same horizontal line.

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