Supporting structure of fully mechanized caving face coal rock roof

Abstract

The utility model discloses a supporting structure of a fully mechanized caving face coal rock roof, which comprises a base, a top seat and a supporting structure, the supporting structure is arranged between the base and the top seat, the supporting structure plays a role in balance supporting, the supporting structure further comprises a balance supporting unit and a lifting supporting unit, and the lifting supporting unit is arranged between the balance supporting unit and the lifting supporting unit. The balance supporting unit is arranged below the top seat, and the lifting supporting unit is arranged above the base and fixedly connected with the balance supporting unit. The utility model belongs to the technical field of supporting equipment of coal rock roofs, particularly relates to a supporting structure of a coal rock roof of a fully mechanized caving face, and effectively solves the problems that the supporting structure of the coal rock roof of the fully mechanized caving face adopts hydraulic telescopic stand columns to support a top beam, and each hydraulic telescopic stand column is independently supported, so that when the top beam is pressed, the stress is not uniform, and the supporting effect is poor. And the upright post which is pressed for a long time is easy to damage to cause unbalance of the top beam.

Description

Technical Field

[0001] This utility model belongs to the technical field of support equipment for coal and rock roofs, specifically referring to a support structure for the coal and rock roof of a fully mechanized longwall mining face. Background Technology

[0002] Roof support in coal and rock mining faces is a very important task in coal mine production. Since the top of the coal mining face is usually a huge layer of rock or coal seam, these materials are very fragile and brittle, and often contain water-bearing layers. Therefore, they are often affected by ground pressure and vibrations from mining equipment. If the support is not in place or not timely, it may lead to roof collapse and accidents. Currently, hydraulic support is commonly used to protect the roof.

[0003] However, the existing support structure for the coal and rock roof of the fully mechanized longwall mining face uses hydraulic telescopic columns to support the roof beams, and each hydraulic telescopic column is supported independently. When the roof beams are under pressure, the force is uneven, and the columns that are under pressure for a long time are prone to damage, leading to roof beam imbalance, mutual isolation, and triggering a chain effect, resulting in large-area support failure and roof collapse accidents. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model proposes a support structure for the coal and rock roof of a fully mechanized longwall mining face. This effectively solves the problem that the support structure for the coal and rock roof of a fully mechanized longwall mining face uses hydraulic telescopic columns to support the roof beam, and each hydraulic telescopic column is independently supported. When the roof beam is under pressure, the force is uneven, and the columns under long-term pressure are prone to damage, leading to the imbalance of the roof beam.

[0005] The technical solution adopted by this utility model is as follows: The present utility model proposes a support structure for the coal and rock roof of a fully mechanized longwall mining face, including a base, a top seat and a support structure. The support structure is located between the base and the top seat and plays the role of balanced support. The support structure also includes a balanced support unit and a lifting support unit. The balanced support unit is located below the top seat and the lifting support unit is located above the base and is fixedly connected to the balanced support unit.

[0006] The balance support unit also includes a support pad and a pressure sensor. The support pad is fixedly installed below the top seat, the pressure sensor is fixedly installed below the support pad, the support seat is fixedly installed around the lower half of the pressure sensor, and the connecting seat is fixedly installed at the bottom of the support seat.

[0007] Preferably, the lifting support unit further includes a limiting pin, a limiting seat, and a hydraulic telescopic rod. The limiting pin is fixedly disposed above the base, the limiting seat is inserted into the limiting pin and supported on the base, and one end of the hydraulic telescopic rod is fixedly disposed above the limiting seat and the other end is fixedly disposed below the connecting seat.

[0008] To achieve real-time monitoring, the pressure sensor and the hydraulic telescopic rod are uniformly controlled by the central control system.

[0009] To better achieve the effect of linkage support adjustment, the pressure sensors are connected in a mesh structure by the central control system. When a single pressure sensor is subjected to abnormal pressure, the pressure signal is transmitted to the central control system, which then controls the corresponding hydraulic telescopic rod to make fine adjustments in order to achieve the force balance of the entire support structure.

[0010] To achieve support and stability more quickly, the support pad is made of flexible rubber material, which allows it to fit tightly against the irregular surface of the coal and rock roof, improving the friction between the pressure sensor and the top seat and the support stability.

[0011] Furthermore, the support base is arranged with the middle group as the center and four groups arranged around it at 90-degree intervals, and the pressure sensor is fixedly installed above the support base.

[0012] The beneficial effects of this utility model using the above structure are as follows: The support structure for the coal and rock roof of the fully mechanized longwall mining face proposed in this solution is that the support pads above each set of hydraulic telescopic rods are linked and controlled by the central control system. When the pressure on a single set of support pads is too high or too low, the central control system controls the surrounding hydraulic telescopic rods to adjust the height. This ensures that each set of hydraulic telescopic rods is subjected to uniform pressure, avoiding damage to a single set and preventing a chain reaction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a support structure for the coal and rock roof of a fully mechanized longwall mining face proposed in this utility model.

[0014] Figure 2 This is a schematic diagram of another perspective of the support structure for the coal and rock roof of a fully mechanized longwall mining face proposed in this utility model.

[0015] Figure 3 This is a third-view structural diagram of a support structure for the coal and rock roof of a fully mechanized longwall mining face proposed in this utility model.

[0016] Figure 4 This is a cross-sectional schematic diagram of a support structure for the coal and rock roof of a fully mechanized longwall mining face proposed in this utility model.

[0017] The components include: 1. base, 2. top seat, 3. support structure, 4. balance support unit, 5. lifting support unit, 6. support pad, 7. pressure sensor, 8. support seat, 9. connecting seat, 10. limit pin, 11. limit seat, and 12. hydraulic telescopic rod.

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention proposes a support structure for the coal and rock roof of a fully mechanized longwall mining face, including a base 1, a top seat 2 and a support structure 3. The support structure 3 is located between the base 1 and the top seat 2 and plays a role in balancing support. The support structure 3 also includes a balancing support unit 4 and a lifting support unit 5. The balancing support unit 4 is located below the top seat 2, and the lifting support unit 5 is located above the base 1 and is fixedly connected to the balancing support unit 4.

[0021] The balanced support unit 4 also includes a support pad 6 and a pressure sensor 7. The support pad 6 is fixedly installed below the top seat 2, and the pressure sensor 7 is fixedly installed below the support pad 6. The support pad 6 is made of flexible rubber material, which allows it to fit tightly against the irregular surface of the coal and rock roof, improving the friction and support stability between the pressure sensor 7 and the top seat 2. The support seat 8 is fixedly installed around the lower half of the pressure sensor 7. The support seat 8 is arranged with four sets around the middle set as the center and spaced at 90 degrees. The pressure sensor 7 is fixedly installed above the support seat 8, and the connecting seat 9 is fixedly installed at the bottom of the support seat 8.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the lifting support unit 5 also includes a limiting pin 10, a limiting seat 11, and a hydraulic telescopic rod 12. The limiting pin 10 is fixedly installed above the base 1, the limiting seat 11 is inserted into the limiting pin 10 and supported on the base 1, one end of the hydraulic telescopic rod 12 is fixed above the limiting seat 11 and the other end is fixed below the connecting seat 9. The pressure sensor 7 and the hydraulic telescopic rod 12 are uniformly controlled by the central control system. The pressure sensor 7 is connected by the central control system in a mesh structure. When a single pressure sensor 7 is subjected to abnormal pressure, the pressure signal is transmitted to the central control system. The central control system controls the corresponding hydraulic telescopic rod 12 to make fine adjustments in order to achieve the force balance of the entire support structure.

[0023] In practical use, first lay the base 1 on the ground, then support the top seat 2 on top, then fix the upper limit seat 11 of the hydraulic telescopic rod 12 through the limit pin 10, then fix the support pad 6 above the pressure sensor 7, and then control the hydraulic telescopic rod 12 to push the support seat 8 on the connecting seat 9 upward, so that the support seat 8 drives the support pad 6 upward. At this time, the pressure sensor 7 on the support pad 6 is supported on the lower side of the top seat 2, thus achieving the support effect. Then, each set of pressure sensors 7 and hydraulic telescopic rods 12 are connected to the central control system through the network. At this time, when the support pad 6 is subjected to abnormal pressure, the support pad 6 transmits the abnormal pressure signal to the central control system. The central control system controls the corresponding hydraulic telescopic rod 12 to make fine adjustments to achieve the force balance of the entire support structure. The above is the usage process of the support structure of the coal and rock roof of the fully mechanized longwall mining face.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A support structure for the roof of coal and rock in a fully mechanized longwall mining face, characterized in that: It includes a base (1), a top seat (2) and a support structure (3). The support structure (3) is located between the base (1) and the top seat (2). The support structure (3) plays a role in balancing support. The support structure (3) also includes a balancing support unit (4) and a lifting support unit (5). The balancing support unit (4) is located below the top seat (2). The lifting support unit (5) is located above the base (1) and is fixedly connected to the balancing support unit (4). The balance support unit (4) also includes a support pad (6), a pressure sensor (7) and a support base (8). The support pad (6) is fixedly installed below the top base (2). The pressure sensor (7) is fixedly installed below the support pad (6). The support base (8) is fixedly installed around the lower half of the pressure sensor (7). A connecting seat (9) is fixedly installed at the bottom of the support base (8).

2. The support structure for the coal and rock roof of a fully mechanized longwall mining face according to claim 1, characterized in that: The lifting support unit (5) also includes a limiting pin (10), a limiting seat (11), and a hydraulic telescopic rod (12). The limiting pin (10) is fixed above the base (1). The limiting seat (11) is inserted into the limiting pin (10) and supported on the base (1). One end of the hydraulic telescopic rod (12) is fixed above the limiting seat (11), and the other end is fixed below the connecting seat (9).

3. The support structure for the coal and rock roof of a fully mechanized longwall mining face according to claim 2, characterized in that: The pressure sensor (7) and the hydraulic telescopic rod (12) are uniformly controlled by the central control system.

4. The support structure for the coal and rock roof of a fully mechanized longwall mining face according to claim 3, characterized in that: The pressure sensors (7) are connected in a mesh structure by the central control system.

5. The support structure for the coal and rock roof of a fully mechanized longwall mining face according to claim 4, characterized in that: The support pad (6) is made of flexible rubber material.

6. The support structure for the coal and rock roof of a fully mechanized longwall mining face according to claim 5, characterized in that: The support base (8) is centered on the middle group and surrounded by four groups spaced at 90 degrees apart. The pressure sensor (7) is fixedly installed above the support base (8).

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