Self-moving forepoling of coal face top cutting line
By designing a self-moving advance bracket for the top-cut line of the coal mining working surface, the thrust device is used to drive the base movement and realize the self-moving of the column, which solves the problem of manually moving single pillars in the existing technology, and improves work efficiency and safety.
Patent Information
- Application Number
- CN202420618428.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-28
AI Technical Summary
In the prior art, when the coal mining surface changes, workers need to carry single pillars for support, and the self-moving of single pillars cannot be achieved, resulting in low working efficiency and high labor intensity.
A coal mining working surface top-cut line self-moving advance bracket is designed, including a first base, a second base, a thrust device, a plurality of first columns and a plurality of second columns. The base is driven to move through the thrust device, so as to realize the self-moving of the column and avoid manual handling.
The self-moving of the advance bracket is achieved, the work efficiency is improved, the labor intensity of workers is reduced, the safety of production and coal production is ensured, and the advance bracket is protected to avoid damage.
Smart Images
Figure CN222558578U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine equipment, in particular to a self-moving advanced support for a top cutting line of a coal mining working face. Background Art
[0002] The areas where the air intake and return air lanes of the coal mining face intersect with the coal mining face are the upper and lower corners, respectively. The upper corner refers to the return air side of the coal mining face, close to the upper wall of the return air lane and the edge of the goaf; the lower corner refers to the return air side of the coal mining face, but close to the lower wall of the return air lane and the edge of the goaf. The corners are affected by the rock properties of the roof and the anchoring force of the anchor (cable), which can easily cause hanging roofs. Strengthened support and forced roof release measures must be taken.
[0003] During the coal mining process, the roof of the mined area is required to collapse in time to reduce the pressure on the roof of the working area and ensure the safety of the working area. After the pillars outside the necessary working area are returned, the roof is required to collapse along a required line. This dividing line is the roof collapse line or the cutting line. Safety technical measures must be taken to ensure the normal advancement of the working face, protect mechanical equipment, and ensure safe production and coal production.
[0004] The traditional mode mostly uses single column support, setting up two or three rows of single hydraulic pillars, and constructing a row of wood piles close to the coal side of the working face. The spacing between wood piles can be adjusted according to the actual situation on site. When the top of the tunnel is broken, uneven, and the tunnel height exceeds 4.5m, wood piles are used instead of single columns for support. When the working face moves forward, the rear single pillar needs to be removed and manually moved to the front for re-support. The repeated support of the return column and the pillar will cause the roof to sink and break.
[0005] However, when the existing single pillar is used for support, when the working surface changes, workers need to move the single pillar to support the front working surface. The self-movement of the single pillar cannot be achieved, the work efficiency is low, and the labor intensity of the workers is high. Utility Model Content
[0006] 1. Technical issues to be resolved
[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a self-moving advanced support for the cutting top line of a coal mining working face, which solves the technical problems that when the working face changes, workers need to carry a single pillar to support the front working face, the single pillar cannot be moved by itself, the work efficiency is low, and the labor intensity of workers is high.
[0008] (II) Technical solution
[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0010] The utility model provides a self-moving advanced support for the top cutting line of a coal mining working face, comprising a first base, a second base, a pushing device, a plurality of first columns and a plurality of second columns; the first base and the second base are arranged in mirror symmetry, the two ends of the pushing device are respectively connected to the first base and the second base, the bottoms of the plurality of first columns are installed on the top of the first base, and the bottoms of the plurality of second columns are installed on the top of the second base; the pushing device comprises a first pushing jack and a second pushing jack, the two ends of the first pushing jack and the second pushing jack are respectively hinged to the first base and the second base to drive the first base and the second base to move; the fixed ends of the plurality of first columns and the plurality of second columns are respectively placed in the column sockets of the first base and the second base, and the plurality of first columns and the plurality of second columns can extend out to support the top plate of the tunnel.
[0011] Preferably, the plurality of first columns and the plurality of second columns are mirror-symmetrical about the midlines of the first base and the second base, respectively, and the plurality of first columns and the plurality of second columns are mirror-symmetrical about the midline of the interval between the first base and the second base.
[0012] Preferably, a plurality of sleeves are installed inside the first base and the second base, and the column socket is located inside the sleeve, and the bottom ends of the first column and the second column are rotatably placed in the plurality of sleeves and in the column socket one by one, and the plurality of sleeves are fixedly connected to the first column and the second column one by one through pins.
[0013] Preferably, the bottom ends of the first column and the second column are both ball head structures, and the ball head structures are placed in the column sockets.
[0014] Preferably, the top ends of the first column and the second column are both horn structures, and the ends of the horn structures with larger outer contours face the first column and the second column.
[0015] Preferably, a column cap is hingedly connected to the end of the speaker structure with a smaller outer contour.
[0016] Preferably, the plurality of first columns on the first base and the plurality of second columns on the second base are connected in series via clamps.
[0017] Preferably, it further comprises a protection component; the protection component is installed on a side of the plurality of second columns away from the first columns to separate the tunnel from the top cutting line.
[0018] Preferably, the protective assembly includes multiple hooks and a protective net; the bottom of one part of the hooks is fixedly connected to the bottom of the column cap, and the bottom of another part of the hooks is fixedly connected to the top of the second base, the two parts of the hooks are arranged opposite to each other and the two ends of the protective net are respectively hooked on the multiple hooks.
[0019] Preferably, it also includes an electro-hydraulic control system; the electro-hydraulic control system is electrically connected to the pushing device, the first column and the second column respectively.
[0020] (III) Beneficial effects
[0021] The beneficial effects of the utility model are:
[0022] The utility model provides a self-moving advance support for the top cutting line of a coal mining working face. By setting a first base and a second base, the two bases are separated, and the contact area between the first base and the second base and the contact surface of the bottom plate can be increased, thereby reducing the pressure of the advance support on the bottom plate, and avoiding the phenomenon that the first base and the second base are stuck to the bottom. By setting a first push jack and a second push jack, the first base and the second base can be connected in series to achieve the integrity of the first base and the second base. At the same time, the first push jack and the second push jack can be extended and retracted at the same time, thereby driving the movement of the first base and the second base, thereby achieving the effect of self-movement, that is, no manual handling is required to achieve the movement of the advance support, thereby improving work efficiency, reducing the labor intensity of workers, and achieving the requirements of high-yield, high-efficiency and rapid advancement of the working face. At the same time, the advance support is protected to avoid collision with the advance support during transportation and avoid damage to the advance support. Moreover, the safety of workers is ensured to ensure safe production and increase coal production. By arranging a plurality of first columns and a plurality of second columns in a plurality of column sockets of the first base and the second base, the advance bracket can provide a greater and more uniform support force when supporting the roof, and at the same time increase the support area and improve the support strength. The utility model has a simple structure and a convenient and quick operation method, can effectively improve work efficiency, reduce the labor intensity of workers, improve safety, and increase coal production. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic side view of the overall structure of a self-moving advanced support for cutting top line of a coal mining working face according to the utility model;
[0024] Figure 2 It is a front view schematic diagram of the overall structure of a self-moving advanced support for cutting top line of a coal mining working face according to the utility model;
[0025] Figure 3It is a schematic diagram of the overall structure of the first base and the second base of a self-moving advanced support for the top cutting line of a coal mining working face according to the utility model;
[0026] Figure 4 It is a schematic top view of the overall structure of the other side of a self-moving advanced support for the top cutting line of a coal mining working face according to the utility model.
[0027] [Description of Reference Numerals]
[0028] 1: first base; 2: second base; 3: pushing device; 31: first pushing jack; 32: second pushing jack; 4: first column; 5: second column; 6: sleeve; 7: column cap; 8: clamp; 9: protection component; 91: hook; 92: protection net; 10: electro-hydraulic control system; 11: column nest. DETAILED DESCRIPTION
[0029] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0030] Embodiment 1
[0031] like Figure 1-Figure 4 As shown, a self-moving advanced support for the top cutting line of a coal mining face in this embodiment includes a first base 1, a second base 2, a pushing device 3, a plurality of first columns 4 and a plurality of second columns 5.
[0032] Specifically, the first base 1 and the second base 2 are arranged in mirror symmetry, and the two ends of the pushing device 3 are respectively connected to the first base 1 and the second base 2, which can adapt to the ups and downs of the base plate, realize the self-movement of the bracket through the extension and retraction of the pushing jack, and ensure the normal advancement of the working surface. The bottoms of the plurality of first columns 4 are installed on the top of the first base 1, and the bottoms of the plurality of second columns 5 are installed on the top of the second base 2; the pushing device 3 includes a first pushing jack 31 and a second pushing jack 32, and the two ends of the first pushing jack 31 and the second pushing jack 32 are respectively hinged to the first base 1 and the second base 2, and, most preferably, the first pushing jack 31 and the second pushing jack 32 are mirror-symmetrical with the midline of the first base 1 and the second base 2 to drive the first base 1 and the second base 2 to move, and at the same time, the thrust of the first pushing jack 31 and the second pushing jack 32 can be more stable and more balanced during the pushing and retracting process; the fixed ends of the plurality of first columns 4 and the plurality of second columns 5 are respectively placed in the column sockets 11 of the first base 1 and the second base 2, and the plurality of first columns 4 and the plurality of second columns 5 can extend out to support the top plate of the tunnel. By setting the first base 1 and the second base 2 to separate the two bases, the contact area between the first base 1 and the second base 2 and the contact surface of the bottom plate can be increased, thereby reducing the pressure of the advance bracket on the bottom plate and avoiding the phenomenon of the first base 1 and the second base 2 being stuck to the bottom. By setting the first push jack 31 and the second push jack 32, the first base 1 and the second base 2 can be connected in series to achieve the integrity of the first base 1 and the second base 2. At the same time, the first push jack 31 and the second push jack 32 can be extended and retracted at the same time to drive the movement of the first base 1 and the second base 2, thereby achieving the effect of self-movement, that is, no manual handling is required to achieve the movement of the advance bracket, improve work efficiency, reduce the labor intensity of workers, and achieve the requirements of high-yield, high-efficiency and rapid advancement of the working face. At the same time, the advance bracket is protected to avoid collision and damage to the advance bracket during transportation. In addition, the safety of workers is ensured to ensure safe production and increase coal production. Preferably, the multiple first columns 4 and the multiple second columns 5 are mirror-symmetrical about the center lines of the first base 1 and the second base 2, respectively, and the multiple first columns 4 and the multiple second columns 5 are mirror-symmetrical about the center line of the interval between the first base 1 and the second base 2, so that the multiple first columns 4 and the multiple second columns 5 can be more stable and the supporting force is more balanced when supporting the top plate of the tunnel.
[0033] Furthermore, it also includes an electro-hydraulic control system 10; the electro-hydraulic control system 10 is electrically connected to the pushing device 3, the first column 4 and the second column 5 respectively, and can control the pushing device 3, multiple first columns 4 and multiple second columns 5 only by remote control, which simplifies the process flow and can be used multiple times. In the long run, it has great economic benefits and realizes the requirements of high-yield, high-efficiency and rapid advancement of the working face, protects mechanical equipment, ensures safe production and coal output, reduces the labor intensity of workers, improves work efficiency, and realizes remote automatic control of the coal mining working face.
[0034] Furthermore, a plurality of sleeves 6 are installed inside the first base 1 and the second base 2, and the column sockets 11 are located inside the sleeves 6. The bottom ends of the first column 4 and the second column 5 are rotatably placed in the plurality of sleeves 6 and in the column sockets 11 in a one-to-one correspondence. The plurality of sleeves 6 are fixedly connected to the first column 4 and the second column 5 in a one-to-one correspondence through pins. By setting the sleeves 6, the first column 4 and the second column 5 can avoid lateral force or eccentric load when supporting, thereby avoiding collision between the first column 4 and the second column 5 and other equipment or coal wall during support or movement, thereby avoiding damage to the support. It should be noted that the plurality of first columns 4 and the plurality of second columns 5 can be directly and one-to-one correspondingly sleeved in the plurality of sleeves 6, so as to realize the rotatability of the plurality of first columns 4 and the plurality of second columns 5 and improve the adaptability of the first column 4 and the second column 5.
[0035] Furthermore, the tops of the first column 4 and the second column 5 are both horn structures, and the end with a larger outer contour of the horn structure faces the first column 4 and the second column 5, which can better adapt to the angle of the tunnel roof, making the first column 4 and the second column 5 more adaptable. Preferably, the end with a smaller outer contour of the horn structure is hinged with a column cap 7, which can increase the contact area between the first column 4 and the second column 5 and the tunnel roof when supporting the tunnel roof, thereby increasing the support strength.
[0036] Furthermore, the bottom ends of the first column 4 and the second column 5 are both ball head structures and the ball head structures are placed in the column socket 11, which can increase the contact area between the bottom of the first column 4 and the second column 5 and the column socket 11, and the processing technology is simple. At the same time, the first column 4 and the second column 5 can rotate in the column socket 11, making the first column 4 and the second column 5 more adaptable.
[0037] Furthermore, the multiple first columns 4 on the first base 1 and the multiple second columns 5 on the second base 2 are connected in series through the clamp 8, which can connect the multiple first columns 4 in series as a whole, and connect the multiple second columns 5 in series as a whole, thereby avoiding the multiple first columns 4 and the multiple second columns 5 from tipping over when supporting the roof of the tunnel, thereby further improving safety.
[0038] Furthermore, the present embodiment further comprises a protection component 9 ; the protection component 9 is installed on a side of the plurality of second columns 5 away from the first columns 4 to separate the tunnel from the top cutting line.
[0039] Specifically, the protective assembly 9 includes a plurality of hooks 91 and a protective net 92; the bottom of one portion of the hooks 91 is fixedly connected to the bottom of the column cap 7, and the bottom of another portion of the hooks 91 is fixedly connected to the top of the second base 2. The two portions of the hooks 91 are arranged opposite to each other and the two ends of the protective net 92 are respectively hooked on the plurality of hooks 91, which can isolate the tunnel from the top cutting line, forming an enclosed space in the tunnel, and providing a good working environment and safety space for the working surface.
[0040] The present embodiment is a self-moving advanced support for the top cutting line of a coal mining face. Through the above structure, its working principle is as follows:
[0041] like Figure 1-Figure 4 As shown, firstly, the tangent self-moving advance support of the coal mining face is assembled, and the electro-hydraulic control system 10 is electrically connected to the first push jack 31, the second push jack 32, the multiple first columns 4 and the multiple second columns 5 respectively; when supporting, the electro-hydraulic control system 10 drives the multiple first columns 4 and the multiple second columns 5 to extend, so that the top surfaces of the column caps 7 at the tops of the multiple first columns 4 and the multiple second columns 5 are in contact with the roof of the tunnel, thereby supporting the roof of the tunnel.
[0042] When it is necessary to support the next working face, the electro-hydraulic control system 10 drives the multiple first columns 4 to retract, drives the first push jack 31 and the second push jack 32 to extend, and drives the first base 1 to move forward. When reaching the specified position, the multiple first columns 4 are driven to extend, and the column caps 7 come into contact with the roof of the tunnel to support the roof of the tunnel. Then, the multiple second columns 5 are driven to retract, and the first push jack 31 and the second push jack 32 are retracted, and the second base 2 is driven to move forward. When reaching the specified position, the multiple second columns 5 are driven to extend, and the column caps 7 come into contact with the roof of the tunnel to support the roof of the tunnel, thereby completing the self-movement of the tangent self-moving advance support of the coal mining working face.
[0043] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.
[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A self-moving advanced support for the top cutting line of a coal mining face, characterized in that: It comprises a first base (1), a second base (2), a pushing device (3), a plurality of first upright posts (4) and a plurality of second upright posts (5); The first base (1) and the second base (2) are arranged in mirror symmetry, the two ends of the pushing device (3) are respectively connected to the first base (1) and the second base (2), the bottoms of the plurality of first columns (4) are mounted on the top of the first base (1), and the bottoms of the plurality of second columns (5) are mounted on the top of the second base (2); The pushing device (3) comprises a first pushing jack (31) and a second pushing jack (32), and two ends of the first pushing jack (31) and the second pushing jack (32) are respectively hinged to the first base (1) and the second base (2) to drive the first base (1) and the second base (2) to move; The fixed ends of the plurality of first columns (4) and the plurality of second columns (5) are respectively placed in column sockets (11) of the first base (1) and the second base (2), and the plurality of first columns (4) and the plurality of second columns (5) can extend out to support the tunnel roof.
2. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 1, characterized in that: The plurality of first columns (4) and the plurality of second columns (5) are respectively mirror-symmetrical about the midline of the first base (1) and the second base (2); the plurality of first columns (4) and the plurality of second columns (5) are mirror-symmetrical about the midline of the interval between the first base (1) and the second base (2).
3. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 2, characterized in that: A plurality of sleeves (6) are installed inside the first base (1) and the second base (2), and the column socket (11) is located inside the sleeve (6); the bottom ends of the first column (4) and the second column (5) are rotatably placed in the plurality of sleeves (6) and placed in the column socket (11) in a one-to-one correspondence; the plurality of sleeves (6) are fixedly connected to the first column (4) and the second column (5) in a one-to-one correspondence via pins.
4. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 1, characterized in that: The bottom ends of the first column (4) and the second column (5) are both ball head structures, and the ball head structures are placed in the column socket (11).
5. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 1, characterized in that: The top ends of the first column (4) and the second column (5) are both horn structures, and the ends of the horn structures with larger outer contours face the first column (4) and the second column (5).
6. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 5, characterized in that: A column cap (7) is hingedly connected to the end of the speaker structure with a smaller outer contour.
7. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 1, characterized in that: The plurality of first columns (4) on the first base (1) and the plurality of second columns (5) on the second base (2) are connected in series via a clamp (8).
8. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 6, characterized in that: Also includes a protection component (9); The protection assembly (9) is installed on a side of the plurality of second columns (5) away from the first column (4) to separate the tunnel from the top cutting line.
9. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 8, characterized in that: The protection component (9) comprises a plurality of hooks (91) and a protection net (92); The bottom of one part of the hooks (91) is fixedly connected to the bottom of the column cap (7), and the bottom of another part of the hooks (91) is fixedly connected to the top of the second base (2). The two parts of the hooks (91) are arranged opposite to each other and the two ends of the protective net (92) are respectively hooked on the multiple hooks (91).
10. A self-moving advanced support for cutting top line of coal mining working face as claimed in claim 1, characterized in that: Also includes an electro-hydraulic control system (10); The electro-hydraulic control system (10) is electrically connected to the pushing device (3), the first column (4) and the second column (5) respectively.