A device for coal mine cut support

Abstract

The utility model relates to the technical field of coal mining, and specifically discloses a device for coal mine cut eye support, which comprises: an inverted L-shaped shed leg, an installation groove is formed in the inside of the inverted L-shaped shed leg, and the installation groove is in sliding connection with an extension column; further comprising: a telescopic mechanism for conveniently adjusting the width is arranged on the side surface of the inverted L-shaped shed leg, and the extension column is fixedly connected with a supporting block; a limiting mechanism suitable for beams of different lengths is arranged on the upside of the inverted L-shaped shed leg, and a connecting seat is arranged on the upside of the inverted L-shaped shed leg. The device for coal mine cut eye support is characterized in that the extension column slides along the installation groove of the inverted L-shaped shed leg, the position is fixed through a threaded bolt in combination with the array-distributed limiting holes, short-distance accurate adjustment is realized, and different roadway width requirements are adapted; the gear rotates to drive the toothed plate to move, and then the moving plate is synchronously close to or away from, the beam body of different lengths can be clamped, and the adaptability is strong.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a device for coal mine cut-hole support. Background Technology

[0002] A coal mine cut-off is a roadway connecting the intake and return airways of a coal mining face. It is used to install fully mechanized mining equipment and serves as the starting point for mineral extraction. Its support technology must be adapted to large cross-sections and complex geological conditions to ensure safe and efficient mining. In the field of coal mine cut-off support, the combined support device of anchor bolts, anchor cables, steel strips, and metal mesh is a widely used and technologically mature core solution. Its design principles, structural composition, and implementation effects all demonstrate a targeted adaptation to the special environment of the cut-off.

[0003] For example, Chinese Patent No. CN222414898U discloses a device for supporting coal mine cut-outs. In this utility model, when multiple top support components form a horizontal support at the top of the cut-out roadway, it can prevent the falling of gravel or slag from the top of the cut-out roadway, thereby effectively ensuring the safety of workers in the roadway. However, existing devices for coal mine cut-off support are difficult to adjust the support distance precisely over short distances, affecting the flexibility of the support. At the same time, the crossbeams are too long, making the installation and disassembly process extremely inconvenient during on-site support operations, increasing the difficulty of operation and time costs. Therefore, there is still room for further improvement.

[0004] Therefore, we propose a device for coal mine cut-hole support to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a device for coal mine cut-hole support, in order to solve the problems mentioned in the background art. In the process of using the existing devices for coal mine cut-hole support, it is difficult to achieve precise adjustment of the support distance over a short distance, which affects the flexibility of the support. At the same time, the crossbeam is too long, which makes the installation and disassembly process extremely inconvenient during on-site support operations, increasing the difficulty of operation and time costs. Therefore, there is still room for further improvement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for coal mine cut-hole support, comprising: The inverted L-shaped canopy leg has an internal mounting groove, which is slidably connected to the extension column. Also includes: The inverted L-shaped canopy legs are provided with a telescopic mechanism on the side for easy width adjustment, and the extension column is fixedly connected to the support block. The upper side of the inverted L-shaped canopy leg is provided with a limiting mechanism for crossbeam bodies of different lengths, and the upper side of the inverted L-shaped canopy leg is provided with a connecting seat.

[0007] Preferably, the telescopic mechanism is composed of an extension column, a support block, and limiting holes. The extension column is symmetrical about the vertical central axis of the support block, and limiting holes are opened inside the extension column. The limiting holes are distributed in an array, and the lower side of the support block is in close contact with the output end of the hydraulic rod.

[0008] Preferably, the limiting hole is slidably connected to the threaded pin, and the threaded pin is threadedly connected to the inverted L-shaped canopy leg, and the threaded pin corresponds one-to-one with the inverted L-shaped canopy leg.

[0009] Preferably, the connecting seat has a crossbeam body slidably connected inside, and the side of the connecting seat has a moving hole.

[0010] Preferably, a column is provided on the upper side of the inverted L-shaped canopy leg, and the column is rotatably connected to the rotating shaft, and a locking rod for limiting the rotating shaft is provided inside the column.

[0011] Preferably, the limiting mechanism is composed of a gear, a toothed plate, and a movable plate. The gear is meshed with the toothed plate, and a movable plate is provided on the side of the toothed plate. The movable plate is slidably connected to the connecting seat.

[0012] Preferably, the toothed plate is symmetrical about the midpoint of the gear, and the side of the movable plate is provided with an anti-slip pad, which is in close contact with the crossbeam body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the device for coal mine cut-eye support extends the column along the mounting groove of the inverted L-shaped support leg, and combined with the array of limiting holes, the position is fixed by the threaded pin, realizing short-distance precise adjustment, adapting to different roadway width requirements; the gear rotation drives the toothed plate to move, thereby making the moving plate move closer or further away synchronously, which can clamp the crossbeam body of different lengths, with strong adaptability; 1. It is equipped with inverted L-shaped canopy legs, extension columns, limit holes and threaded pins. The extension columns slide along the mounting groove of the inverted L-shaped canopy legs. Combined with the array of limit holes, the position is fixed by the threaded pins, realizing precise adjustment over short distances to adapt to different roadway width requirements.

[0014] 2. Equipped with a hydraulic rod and a support block, the hydraulic rod drives the support block to move the extension column, replacing manual adjustment, improving adjustment efficiency and operational stability, and reducing labor intensity.

[0015] 3. It is equipped with gears, toothed plates and moving plates. The rotation of the gears drives the toothed plates to move, which in turn makes the moving plates move closer or further away in sync. It can clamp crossbeams of different lengths and has strong adaptability.

[0016] 4. It is equipped with anti-slip pads and sliding holes. The anti-slip pads enhance the friction between the sliding plate and the crossbeam body, preventing the crossbeam from sliding during the support process; the sliding holes provide sliding guidance for the sliding plate, ensuring a smooth adjustment process.

[0017] 5. It is equipped with a rotating shaft and a locking rod. The rotating shaft drives the gear to rotate to adjust the position of the moving plate. After the adjustment is completed, the rotating shaft is fixed by the locking rod to prevent the gear from loosening and to ensure the safety of the support. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the inverted L-shaped canopy leg and extension column of this utility model; Figure 3 This is a schematic diagram of the connection structure between the mounting groove and the connecting seat of this utility model; Figure 4 This is an exploded structural diagram of the column and rotating shaft of this utility model; Figure 5 This is a schematic diagram of the second connection state structure of this utility model.

[0019] In the diagram: 1. Inverted L-shaped canopy leg; 2. Mounting groove; 3. Extension column; 4. Support block; 5. Limiting hole; 6. Threaded pin; 7. Connecting seat; 8. Crossbeam body; 9. Moving hole; 10. Column; 11. Rotating shaft; 12. Locking rod; 13. Gear; 14. Tooth plate; 15. Moving plate; 16. Anti-slip pad; 17. Hydraulic rod. Detailed Implementation

[0020] 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, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a device for supporting coal mine cut-outs, comprising: an inverted L-shaped support leg 1, an installation groove 2, an extension column 3, a support block 4, a limiting hole 5, a threaded pin 6, a connecting seat 7, a crossbeam body 8, a moving hole 9, a column 10, a rotating shaft 11, a locking rod 12, a gear 13, a toothed plate 14, a moving plate 15, an anti-slip pad 16, and a hydraulic rod 17.

[0022] Existing devices for coal mine cut-off support are difficult to use, making it hard to achieve precise short-distance adjustment of the support distance and affecting the flexibility of the support. At the same time, the crossbeams are too long, making the installation and disassembly process extremely inconvenient during on-site support operations, increasing the difficulty of operation and time costs. Therefore, there is still room for further improvement.

[0023] When using devices for coal mine cut-hole support, such as Figure 1 , Figure 2 and Figure 5 As shown, during coal mine cut-off support operations, the support width is first adjusted according to the roadway width adjustment device. Hydraulic rod 17 is activated, and its output end pushes support block 4. Support block 4 is fixedly connected to extension column 3, thereby raising the inverted L-shaped support leg 1. Then, extension column 3 slides along the mounting groove 2 inside the inverted L-shaped support leg 1. Based on the actual roadway width requirements, extension column 3 is adjusted to a suitable position. At this point, the array of limiting holes 5 on extension column 3 aligns with the pre-drilled holes on the inverted L-shaped support leg 1. Threaded pin 6 is passed through the inverted L-shaped support leg 1 and inserted into the corresponding limiting hole 5. Tightening the threaded pin 6 secures the extension column 3 to the inverted L-shaped support leg 1, completing the short-distance precise adjustment of the support width.

[0024] like Figure 1 , Figure 3 and Figure 4 As shown, the next step is to install and fix the crossbeam body 8. Insert the crossbeam body 8 into the connecting seat 7 on the upper side of the inverted L-shaped canopy leg 1, so that the crossbeam body 8 slides and fits against the connecting seat 7. Rotate the rotating shaft 11 on the column 10. The rotating shaft 11 drives the gear 13 at its end to rotate. The gear 13 meshes with two sets of toothed plates 14 symmetrical about its midpoint, thereby driving the two sets of toothed plates 14 to move closer synchronously. The toothed plates 14 are fixedly connected to the moving plate 15. The moving plate 15 slides along the moving hole 9 on the side of the connecting seat 7. When the anti-slip pad 16 on the side of the moving plate 15 is tightly fitted with the crossbeam body 8, stop rotating the rotating shaft 11. Insert the locking rod 12 into the column 10 to limit and fix the rotating shaft 11, prevent the gear 13 from loosening, and achieve a stable installation of the crossbeam body 8, adapting to the needs of crossbeam bodies 8 of different lengths.

[0025] like Figure 1 and Figure 5As shown, after the device is installed, the inverted L-shaped support leg 1 and the extension column 3 together form the side support structure, and the crossbeam body 8 forms the top support structure, forming a complete coal mine cut-out support system. The anti-slip pad 16 enhances the friction between the moving plate 15 and the crossbeam body 8, preventing the crossbeam body 8 from sliding during the support process; the hydraulic rod 17 cooperates with the threaded pin 6 to ensure the stability of the side support and effectively resist the pressure of the roadway sidewall; the locking rod 12 locks the rotating shaft 11 to prevent the limit mechanism from loosening and ensure the safety of the top support. If there are concerns about coal slag falling, a plate can be placed on the upper side of the crossbeam body 8 to enhance the support effect.

[0026] When it is necessary to disassemble the device or replace the crossbeam body 8, first pull out the locking rod 12, rotate the rotating shaft 11 in the opposite direction, and the gear 13 will drive the toothed plate 14 and the moving plate 15 away from the crossbeam body 8, so that the crossbeam body 8 can be taken out; unscrew the threaded pin 6, start the hydraulic rod 17 to retract, drive the extension column 3 to reset along the mounting groove 2, and complete the device disassembly. The operation is convenient and efficient.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for supporting coal mine cut-off holes, comprising: The inverted L-shaped canopy leg (1) has an installation groove (2) inside, and the installation groove (2) is slidably connected to the extension column (3); Its characteristic is that it further includes: The side of the inverted L-shaped canopy leg (1) is provided with a telescopic mechanism for easy width adjustment, and the extension column (3) is fixedly connected to the support block (4). The upper side of the inverted L-shaped canopy leg (1) is provided with a limiting mechanism for crossbeam bodies (8) of different lengths, and the upper side of the inverted L-shaped canopy leg (1) is provided with a connecting seat (7).

2. The device for supporting coal mine cut-off holes according to claim 1, characterized in that: The telescopic mechanism is composed of an extension column (3), a support block (4) and a limiting hole (5). The extension column (3) is symmetrical about the vertical central axis of the support block (4), and the extension column (3) has a limiting hole (5) inside. The limiting holes (5) are arranged in an array. The lower side of the support block (4) is in close contact with the output end of the hydraulic rod (17).

3. The device for supporting coal mine cut-off holes according to claim 2, characterized in that: The limiting hole (5) is slidably connected to the threaded pin (6), and the threaded pin (6) is threadedly connected to the inverted L-shaped canopy leg (1), and the threaded pin (6) corresponds one-to-one with the inverted L-shaped canopy leg (1).

4. The device for supporting coal mine cut-off holes according to claim 1, characterized in that: The connecting seat (7) is slidably connected to the beam body (8), and the side of the connecting seat (7) is provided with a moving hole (9).

5. The device for supporting coal mine cut-off holes according to claim 4, characterized in that: The upper side of the inverted L-shaped canopy leg (1) is provided with a column (10), and the column (10) is rotatably connected to the rotating shaft (11), and the inside of the column (10) is provided with a locking rod (12) for limiting the rotating shaft (11).

6. The device for supporting coal mine cut-off holes according to claim 5, characterized in that: The limiting mechanism is composed of a gear (13), a toothed plate (14) and a movable plate (15). The gear (13) is meshed with the toothed plate (14), and the movable plate (15) is provided on the side of the toothed plate (14). The movable plate (15) is slidably connected to the connecting seat (7).

7. The device for supporting coal mine cut-off holes according to claim 6, characterized in that: The toothed plate (14) is symmetrical about the midpoint of the gear (13), and the side of the moving plate (15) is provided with an anti-slip pad (16), and the anti-slip pad (16) is in close contact with the crossbeam body (8).

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