Hydraulic auxiliary device for fully mechanized coal mining face of coal mine

Abstract

The invention relates to the field of coal mining, in particular to a coal mine fully mechanized coal mining face hydraulic auxiliary device which comprises a hydraulic support, driving mechanisms symmetrically arranged on the surface of the hydraulic support, a coordination mechanism moving away from the gravity center direction of the ground in the working state and arranged on the driving mechanisms. On the basis of the completion condition of a fully mechanized coal mining face of a coal mine, the hydraulic support is opened or reset in cooperation with the hydraulic support, the linkage mechanisms are arranged in the coordination mechanism, and through the arrangement of the driving mechanism and the coordination mechanism, when coal collection in a current area is completed and the device needs to be moved towards a collection area, the hydraulic support descends, and the air cylinder jacks the operation plate; and the operation plate makes contact with the hole wall, the hydraulic support continues to descend and move forwards, the operation plate slides in the transverse plate and keeps relatively static, the current area is still supported, and when the hydraulic support reaches the position below a new positioning point and needs to be jacked and supported, the coordination mechanism is located in the inclined notch again.

Description

Technical Field

[0001] The invention relates to the field of coal mining, in particular to a hydraulic auxiliary device for a fully mechanized mining working face in a coal mine. Background Art

[0002] When conducting underground mining operations, it is necessary to excavate the coal mine along the mining direction, that is, to work toward the collection area through the collection device, and then support the "open side (i.e. the open part of the tunnel)" through the hydraulic device (such as Figure 2 As shown in the figure, under the influence of mining stress, the tunnel surrounding rock is prone to butterfly failure areas (a symmetrical butterfly-shaped plastic failure area formed in the surrounding rock due to high stress. Its shape is similar to butterfly wings and is common in deep rock masses or high-stress environments. It is the result of the combined effect of stress redistribution within the surrounding rock and insufficient rock strength), making the current area relatively unstable and prone to collapse risks.

[0003] The existing solution is to use multiple hydraulic devices to promptly support the interior of the mined tunnel after the coal in the current area is collected. The collection device then continues to work toward the collection area. After the work in this area is completed, the rear hydraulic device is lowered and then pushed toward the collection area. The hydraulic device then lifts the interior of the tunnel wall, providing support to the top of the tunnel wall and the direction of ground gravity, reducing the risk of surrounding rock collapse. However, some problems still exist.

[0004] Although the above technical solution has solved the technical problem well, in the actual operation process, various problems will arise in the tunnel when the hydraulic device is moved. For example, after the spraying work is carried out, since the tunnel is in a high temperature and high humidity environment all year round, it is easy for coal with smaller particle size to stick together and appear in small lumps or mud. There will be hard spherical coal in the collection area, making it unstable inside the tunnel wall. At the same time, it is affected by the mining stress, causing it to easily fall out from the inside of the tunnel wall, pushing out the spherical coal, causing damage to the workers and the equipment, and posing certain safety hazards. When the hydraulic device moves the collection area, if it is in a bedding development area (a layered structure formed in sedimentary rocks due to changes in the sedimentary environment, with weak adhesion between bedding surfaces, commonly found in shale, sandstone, coal-bearing strata, etc.) or a high shear stress area (an area where stress is redistributed around the tunnel due to excavation and shear stress increases significantly, commonly found in tunnel corners, sudden section changes, or deep high-stress environments), the loss of support inside the tunnel wall may cause roof collapse. At this time, personnel are required to inject grout into the cracks or drill oblique holes to suppress rock slippage. However, the existing hydraulic auxiliary devices are difficult to operate in the current environment, provided that they are used in conjunction with workers. Summary of the Invention

[0005] In view of the above-mentioned problems or the problems in the prior art that coal may cause damage to equipment and personnel and it is difficult for workers to operate oblique drilling, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a hydraulic auxiliary device for a fully mechanized mining working face in a coal mine.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a hydraulic auxiliary device for a coal mine comprehensive mining working face, comprising a hydraulic support, an oblique groove is opened on the surface of the hydraulic support, a driving mechanism is symmetrically arranged on the surface of the hydraulic support, and in the working state, it moves away from the center of gravity of the ground, a coordination mechanism is arranged on the driving mechanism, and cooperates with the hydraulic support to open or reset based on the completion status of the coal mine comprehensive mining working face, and several groups of connecting mechanisms are arranged inside the coordination mechanism, and in the working state, drilling operations are performed based on the current status of the coal mine wall.

[0008] As a preferred solution of the hydraulic auxiliary device for the coal mine fully mechanized mining working face of the present invention, the driving mechanism includes a fixed block arranged on the hydraulic support, a cylinder arranged inside the fixed block, and a cross block arranged at the output end of the cylinder.

[0009] As a preferred solution of the hydraulic auxiliary device for the coal mine comprehensive mining working face of the present invention, the coordination mechanism includes a horizontal plate arranged on the surface of the horizontal block, an operating plate is slidably connected to the inside of the horizontal plate, a blocking net is arranged on the surface of the horizontal plate close to the operating plate, a plurality of groups of inclined holes are opened inside the operating plate, and semi-arc grooves corresponding to the number of inclined holes are opened on the surface of the operating plate close to the center of gravity of the ground, and are connected to the inclined holes, a magnetic piece is arranged inside the semi-arc groove, a shielding member is arranged on the side of the operating plate surface away from the blocking net, and a pneumatic rod is arranged on the side of the operating plate surface close to the blocking net.

[0010] As a preferred solution of the hydraulic auxiliary device for the coal mine fully mechanized mining working face of the present invention, the shielding member includes an inclined plate 1 arranged on one side of the blocking net, and a plurality of groups of conical notches opened on the inclined plate 1.

[0011] As a preferred solution of the hydraulic auxiliary device of the coal mine comprehensive mining working face of the present invention, the connecting mechanism includes a bellows arranged inside the inclined hole, a protective tube arranged at the end of the bellows, and a magnetic plate 2 arranged on the surface of the protective tube and matched with the magnetic plate 1.

[0012] As a preferred solution of the hydraulic auxiliary device for the coal mine fully-mechanized mining working face of the present invention, wherein: the horizontal line of the cylinder is lower than the oblique notch when it is in the reset state.

[0013] As a preferred solution of the hydraulic auxiliary device for the fully mechanized mining working face of a coal mine of the present invention, the blocking net is arranged at an angle and is fixedly connected to the operating panel.

[0014] As a preferred solution of the hydraulic auxiliary device for the fully mechanized mining working face of a coal mine of the present invention, the operating panel is reset to the oblique notch in the retracted state.

[0015] As a preferred solution of the hydraulic auxiliary device for the fully mechanized mining working face of a coal mine of the present invention, the operating panel slides and is limited on the horizontal plate.

[0016] As a preferred solution of the hydraulic auxiliary device for the fully mechanized mining working face of a coal mine of the present invention, the pneumatic rod is arranged obliquely and fixedly connected to the hydraulic support.

[0017] The beneficial effects of the hydraulic auxiliary device for the fully mechanized coal mining working face of the present invention are as follows: through the arrangement of the driving mechanism and the coordination mechanism, when the coal collection in the current area is completed and the device needs to be moved toward the collection area, the hydraulic support descends, the cylinder lifts the operating plate, the operating plate contacts the cave wall, the hydraulic support continues to descend and move forward, the operating plate slides inside the cross plate and remains relatively stationary, and still supports the current area;

[0018] Furthermore, when the workers need to grout or drill holes in the cracks of the tunnel wall in the bedding development area or the high shear stress area, the barrier will be opened while the operating panel moves, and the workers drill holes in the tunnel wall by controlling the protective pipe through the bellows. When drilling at an angle, the inclination angle of the hole is less than or equal to the opening length of the barrier. At this time, the coal slag and spherical coal balls in the front will fall from the surface of the tunnel wall and be concentrated on the barrier for unified treatment. A small amount of coal slag will slide out of the shielding piece, reducing the probability of injuring people. At the same time, the rear hydraulic device reduces the possibility of the part in contact with the ground being scratched and stuck by coal, making it difficult to move, when moving forward a point. At the same time, when drilling at a fixed point, the cylinder can be operated to compensate a certain distance downward. Due to the particularity of the pneumatic rod, it will slowly drive the oblique hole to move. When it moves to the appropriate distance, the cylinder is lifted again, and then the hole is drilled. The inclined hole is convenient for the subsequent insertion of anchor bolts for fixation, thereby strengthening the support strength of the mining area.

[0019] Furthermore, when the hydraulic support is working, the internal hydraulic support pin ( Figure 4 As shown in the figure, the hydraulic support pin shaft will be damaged by falling and sticking coal in the environment. The driving mechanism and the coordination mechanism always protect the hydraulic support pin shaft. When the coordination mechanism is fully reset, the hydraulic support pin shaft is in a relatively closed space, which greatly reduces the probability of coal falling into the interior and causing damage to it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is an inclined schematic diagram of the hydraulic auxiliary device for the fully mechanized mining face in a coal mine.

[0022] Figure 2 This is a front view schematic diagram of the hydraulic auxiliary device for the fully mechanized mining face in a coal mine.

[0023] Figure 3 This is a schematic diagram of the flipping of the hydraulic auxiliary device for the fully mechanized mining face in a coal mine.

[0024] Figure 4 This is a schematic diagram of the driving mechanism and coordination mechanism of the hydraulic auxiliary device of the fully mechanized mining working face in a coal mine.

[0025] Figure 5 This is a schematic diagram of the coordination mechanism of the hydraulic auxiliary device for the fully mechanized mining face in a coal mine.

[0026] Figure 6 This is a schematic diagram of the coupling mechanism of the hydraulic auxiliary device for the fully mechanized mining working face in a coal mine.

[0027] Figure 7 This is a partial cross-sectional diagram of the coordination mechanism of the hydraulic auxiliary device of the fully mechanized mining face in a coal mine.

[0028] In the figure: 100, hydraulic support; 101, oblique notch; 200, driving mechanism; 201, fixed block; 202, cylinder; 203, cross block; 300, coordination mechanism; 301, cross plate; 302, operating panel; 303, blocking net; 304, oblique hole; 305, semi-arc notch; 306, magnetic piece 1; 307, shielding piece; 3071, oblique plate 1; 3072, conical notch; 308, pneumatic rod; 400, connecting mechanism; 401, bellows; 402, protective tube; 403, magnetic piece 2. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Reference Figures 1 to 7 A hydraulic auxiliary device for a fully mechanized coal mining working face includes a hydraulic support 100, an oblique notch 101 is opened on the surface of the hydraulic support 100, a driving mechanism 200 symmetrically arranged on the surface of the hydraulic support 100, which moves away from the center of gravity of the ground in a working state, a coordination mechanism 300 arranged on the driving mechanism 200, which cooperates with the hydraulic support 100 to open or reset based on the completion status of the fully mechanized coal mining working face, and a plurality of groups of connecting mechanisms 400 arranged inside the coordination mechanism 300, which perform drilling operations based on the current status of the coal mine wall in a working state.

[0031] Refer to Figure 3 Figure 4The driving mechanism 200 includes a fixed block 201 arranged on the hydraulic support 100, a cylinder 202 arranged inside the fixed block 201, and a cross block 203 arranged at the output end of the cylinder 202.

[0032] The cylinder 202 drives the cross block 203 to work. When the cross block 203 is reset by the cylinder 202, it will be on both sides of the hydraulic support 100, and the two will not affect each other. The cylinder 202 is set at an angle. Under special circumstances, it can be set perpendicular to the center of gravity of the ground, but the connection part between the cylinder 202 and the fixed block 201 is always lower than the oblique slot 101.

[0033] Reference Figures 4 to 7 The coordination mechanism 300 includes a horizontal plate 301 arranged on the surface of the horizontal block 203, and an operating plate 302 is slidably connected to the inside of the horizontal plate 301. The operating plate 302 slides on the horizontal plate 301 and is always in horizontal reciprocating operation. In the initial state, the horizontal plate 301 is inside the oblique slot 101, and its height is on the same horizontal line as the hydraulic support 100. A blocking net 303 is provided on the surface of the horizontal plate 301 near the side of the operating plate 302. The blocking net 303 on the horizontal plate 301 is in an open or closed state through the movement of the operating plate 302. When the operating plate 302 is in the initial state, it is stored inside the horizontal plate 301. Several groups of oblique holes 304 are opened inside the operating plate 302. The purpose of the oblique holes 304 is to help workers in the bedding development area or the high shear stress area to adjust the interior of the cave wall. When drilling or grouting is performed, the inclined grouting can effectively prevent the slurry from splashing and affecting the workers, and the operating panel 302 can also have a blocking effect to a certain extent. When the workers are drilling, especially when drilling at an angle, the holes extend inside the cave wall to the screen 303, and the cave wall above the screen 303 will vibrate, causing the coal to fall off the surface of the cave wall. Therefore, the screen 303 is set in the forward direction of the device, and the surface of the operating panel 302 is provided with semi-arc slots 305 corresponding to the number of oblique holes 304 near the center of gravity of the ground, and is connected to the oblique holes 304. A magnetic piece 306 is arranged inside the semi-arc slot 305, and a shielding member 307 is provided on the side of the operating panel 302 surface away from the screen 303, and a pneumatic rod 308 is provided on the side of the operating panel 302 surface close to the screen 303.

[0034] It should be noted that, due to its special properties, the pneumatic rod 308 will slowly retract and reset when the operating plate 302 is not lifted by the cylinder 202, making it convenient for personnel to observe and locate the drilling position, and at the same time, the screen 303 will be slowly retracted, and the coal inside the screen 303 will be shaken, and then the coal will be stored at the folded part of the screen 303, while reducing the probability of knotting caused by the rapid storage of the screen 303, and the pneumatic rod 308 is hinged on the operating plate 302. When the pneumatic rod 308 is reset, the pneumatic rod 308 is stored inside the hydraulic support 100, and the other end of the pneumatic rod 308 is fixedly connected to the surface of the operating plate 302. Under special circumstances, a protective device can be installed at the output end of the pneumatic rod 308 to prevent dust from falling into the gap at the output end, and when the device is reset as a whole, the operating plate 302 and the hydraulic support 100 are at the same horizontal height, and the cross block 203 is slightly lower than the horizontal height formed above.

[0035] The shielding member 307 includes an inclined plate 3071 arranged on one side of the blocking net 303, and several groups of conical notches 3072 opened on the inclined plate 3071. The inclined plate 3071 is always above the pin shaft of the hydraulic support to protect it. At the same time, when grouting or the hole wall is wet, the water squeezed between the device and the hole wall can flow out from the conical notches 3072.

[0036] The connecting mechanism 400 includes a bellows 401 arranged inside the inclined hole 304, a protective tube 402 arranged at the end of the bellows 401, and a magnetic piece 2 403 arranged on the surface of the protective tube 402 and cooperating with the magnetic piece 1 306. When personnel are grouting and drilling holes in the cave wall, they operate the protective tube 402 and insert the grouting pipe or drilling device into the protective tube 402. When not in use, the protective tube 402 can be adsorbed onto the magnetic piece 1 306 through the magnetic piece 2 403 to prevent liquid from falling into the pin shaft of the hydraulic support.

[0037] Reference Figure 2 , when the cylinder 202 is in the reset state, the horizontal line is lower than the oblique notch 101.

[0038] Reference Figure 4 The blocking net 303 is tilted and fixedly connected to the operating panel 302 .

[0039] The operating panel 302 is reset to the oblique notch 101 in the stored state.

[0040] The operating panel 302 slides and is limited on the horizontal panel 301 . The operating panel 302 is provided with a sliding groove for sliding on the horizontal panel 301 .

[0041] Working principle:

[0042] In the collection area Figure 3Several groups of devices are installed at fixed points behind the collection device shown. When the collection device is working, the driving mechanism 200 and the coordination mechanism 300 are in the initial state. The coordination mechanism 300 is close to the cave wall and is on the same horizontal line as the hydraulic support 100. When the collection area has been collected and needs to continue to the next point, each device needs to be moved to the goaf area. At this time, the hydraulic support 100 descends, and the output end of the cylinder 202 on the driving mechanism 200 starts to work, lifting the coordination mechanism 300, and the operating panel 30 2 is attached to the cave wall, the hydraulic support 100 still moves forward, and under the influence of the jacking force, the operating panel 302 does not move, and the horizontal plate 301 moves to the next support point in the collection area. At the same time, the blocking net 303 is opened to protect the electrical components of the hydraulic support 100. When personnel need to grout or drill holes inside the cave wall, they pull down the protective tube 402 adsorbed by the second magnetic piece 403 from the first magnetic piece 306, and then drill or grout the inside of the cave wall through the chamber formed by the protective tube 402, the corrugated tube 401 and the oblique hole 304.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A hydraulic auxiliary device for a fully mechanized coal mining working face, comprising a hydraulic support (100), characterized in that: The surface of the hydraulic support (100) is provided with an oblique notch (101); A driving mechanism (200) is symmetrically arranged on the surface of the hydraulic support (100), and moves in a direction away from the center of gravity of the ground in a working state; A coordination mechanism (300) provided on the driving mechanism (200) cooperates with the hydraulic support (100) to open or reset based on the completion status of the fully mechanized mining working face of the coal mine; Several groups of connection mechanisms (400) are arranged inside the coordination mechanism (300), and in a working state, perform a drilling operation based on the current state of the coal mine wall.

2. The hydraulic assist device for a fully mechanized coal mining face according to claim 1, characterized in that: The driving mechanism (200) comprises a fixed block (201) arranged on the hydraulic support (100), a cylinder (202) arranged inside the fixed block (201), and a transverse block (203) arranged at the output end of the cylinder (202).

3. The hydraulic assist device for a fully mechanized coal mining face according to claim 2, characterized in that: The coordination mechanism (300) includes a horizontal plate (301) arranged on opposite sides of two horizontal blocks (203), an operating plate (302) is slidably connected between the two horizontal plates (301), a blocking net (303) is provided on the surface of the horizontal plate (301) close to the operating plate (302), a plurality of groups of oblique holes (304) are provided inside the operating plate (302), a semi-arc notch (305) corresponding to the number of the oblique holes (304) is provided on the surface of the operating plate (302) close to the center of gravity of the ground, and is connected to the oblique holes (304), a magnetic piece (306) is provided inside the semi-arc notch (305), a shielding member (307) is provided on the surface of the operating plate (302) away from the blocking net (303), and a pneumatic rod (308) is provided on the surface of the operating plate (302) close to the blocking net (303).

4. The hydraulic assist device for a fully mechanized coal mining face according to claim 3, characterized in that: The shielding member (307) comprises an inclined plate (3071) arranged on one side of the blocking net (303), and a plurality of groups of tapered notches (3072) opened on the inclined plate (3071).

5. The hydraulic assist device for a fully mechanized coal mining face according to claim 4, characterized in that: The connecting mechanism (400) includes a bellows (401) arranged inside the oblique hole (304), a protective tube (402) arranged at the end of the bellows (401), and a second magnetic piece (403) arranged on the surface of the protective tube (402) and matched with the first magnetic piece (306).

6. The hydraulic assist device for a fully mechanized coal mining face according to claim 5, characterized in that: In the reset state, the horizontal line of the cylinder (202) is lower than the oblique notch (101).

7. The hydraulic assist device for a fully mechanized coal mining face according to claim 6, characterized in that: The blocking net (303) is arranged obliquely and is fixedly connected to the operating panel (302).

8. The hydraulic assist device for a fully mechanized coal mining face according to claim 7, characterized in that: The operating panel (302) is reset to the oblique notch (101) in the stored state.

9. The hydraulic assist device for a fully mechanized coal mining face according to claim 8, characterized in that: The operating panel (302) slides and is limited on the transverse panel (301).

10. The hydraulic assist device for a fully mechanized coal mining face according to claim 9, characterized in that: The pneumatic rod (308) is tilted and fixedly connected to the hydraulic support (100).

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