A filling template for coal mining

Abstract

This utility model discloses a filling template for coal mining, including a support frame. Multiple vertical rails are installed on one side of the support frame, and multiple horizontal rails are slidably connected to one side of each vertical rail. Multiple baffles for sealing goaf areas are slidably connected to one side of each horizontal rail. Through holes for injecting filling material are provided above each baffle. Compared to the cumbersome method of fixing baffles piece by piece in traditional templates, this template, through the sliding cooperation between the vertical and horizontal rails and the design of the baffles being embedded in the horizontal rails via a first limiting plate, allows for the rapid assembly of multiple baffles. Only by installing plugs at the ends of the vertical and horizontal rails and tightening them with fixing bolts can the first and second limiting plates be integrally pressed and limited, eliminating the need to fix each baffle to the horizontal rail individually. This significantly reduces repetitive operations, greatly shortens the template assembly time before goaf sealing, and accelerates the overall progress of the filling operation.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically a filling template for coal mining. Background Technology

[0002] In coal mining operations, goaf backfilling is a key step in ensuring underground operation safety and controlling surface subsidence. As the core equipment for sealing goafs and bearing backfill material, the structural rationality and operational efficiency of backfilling templates directly affect the quality of backfilling operations and the overall mining progress.

[0003] Currently available coal mine backfill templates generally have significant defects in the installation and fixing of baffles. Most templates use an independent installation design for the baffles, requiring each baffle used to seal the goaf to be individually connected and fixed to the support frame using bolts, clips, or welding. In actual underground operations, the cross-sectional dimensions of the goaf are usually large, requiring the assembly of dozens of baffles to achieve complete sealing. Operators must position, calibrate, and fix each baffle one by one, which is not only cumbersome and repetitive but also requires frequent adjustments to tools and posture, resulting in extremely long baffle installation times and severely slowing down the overall backfilling operation.

[0004] There is an urgent need for a filling template structure that can optimize the baffle fixing method and improve operational efficiency and reliability. Therefore, a filling template for coal mining is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide a filling template for coal mining to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filling template for coal mining, comprising a support frame, wherein multiple vertical rails are installed on one side of the support frame, multiple horizontal rails are slidably connected to one side of the multiple vertical rails, and multiple baffles for sealing goaf areas are slidably connected to one side of the multiple horizontal rails, and through holes for injecting filling material are provided above the multiple baffles.

[0007] A plug is installed at one end of each of the vertical and horizontal rails. The end of the plug is adapted to the space inside the vertical and horizontal rails. Fixing bolts are installed between the vertical and horizontal rails and the plugs.

[0008] Preferably, a plurality of first limiting plates are installed on the rear surface of the baffle, and a first connecting rod is installed between the plurality of first limiting plates.

[0009] Preferably, the first limiting plate is slidably connected to the inside of the horizontal rail, and the surface of the first limiting plate is at the same level as the side of the baffle.

[0010] Preferably, a plurality of second limiting plates are installed on the rear surface of the cross rail, and a second connecting rod is installed between the plurality of second limiting plates.

[0011] Preferably, the second limiting plate is slidably connected to the inside of the vertical rail.

[0012] Preferably, the support frame is equipped with multiple support rods, and the ends of the multiple support rods are equipped with fixing nuts.

[0013] Preferably, the rear surface of the baffle is uniformly covered with reinforcing ribs.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Compared with the cumbersome method of fixing the baffles piece by piece in the traditional template, this template can quickly assemble multiple baffles by sliding the vertical rail and the horizontal rail, and embedding the baffles into the horizontal rail through the first limiting plate. Only by installing the plugs at the ends of the vertical rail and the horizontal rail and tightening them with fixing bolts can the first and second limiting plates be pressed and limited as a whole. There is no need to fix the baffles and the horizontal rails one by one, which greatly reduces repetitive operations, significantly shortens the template assembly time before the goaf is sealed, and speeds up the overall progress of the filling operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front surface structure of the baffle of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the baffle of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the plug of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the horizontal rail of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of this utility model after the baffle is removed.

[0021] In the diagram: 1. Support frame; 2. Support rod; 3. Vertical rail; 4. Horizontal rail; 5. Baffle; 6. Through hole; 7. Reinforcing rib; 8. First limiting plate; 9. First connecting rod; 10. Plug; 11. Fixing bolt; 12. Second limiting plate; 13. Second connecting rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figure 1-6This utility model provides a technical solution: a filling template for coal mining, including a support frame 1 for providing an overall support foundation and ensuring the stability of the template under complex working conditions in underground coal mines. On one side of the support frame 1, multiple vertical rails 3 are installed at intervals along its height direction to form a vertical sliding support structure. On one side of the multiple vertical rails 3, multiple horizontal rails 4 that can move smoothly along the length direction of the vertical rails 3 are connected by an embedded sliding fit. On one side of the multiple horizontal rails 4, multiple baffles 5 made of high-strength wear-resistant steel plates are slidably connected to seal the goaf to prevent leakage of filling material. Above the multiple baffles 5, through holes 6 with apertures adapted to the commonly used filling material conveying pipes in coal mines are opened, and are evenly distributed along the length direction of the top of the baffles 5 to ensure uniform injection of filling material.

[0024] Both the vertical rail 3 and the horizontal rail 4 have a plug 10 installed at one end to seal the end opening. The end of the plug 10 is adapted to the space inside the vertical rail 3 and the horizontal rail 4. A fixing bolt 11 is installed between the vertical rail 3 and the horizontal rail 4 and the plug 10, which passes through the pre-set threaded hole of the plug 10 to allow the plug 10 to be detachably fixed, facilitating later maintenance or component replacement. After the plug 10 is inserted into the interior of the vertical rail 3 and the horizontal rail 4, it can press the baffle 5 and the limiting plate on the horizontal rail 4, thereby restricting and fixing the position of multiple baffles 5, avoiding the situation where each baffle 5 is installed and fixed individually, and improving the overall installation efficiency.

[0025] like Figure 3 As shown: Multiple first limiting plates 8 made of steel plate are fixed on the rear surface of the baffle 5. A first connecting rod 9 made of round steel or square steel is installed between the multiple first limiting plates 8 to connect and fix the multiple first limiting plates 8 in series to form an integral force-bearing structure and avoid deformation of a single limiting plate under force.

[0026] like Figure 4 As shown: The first limiting plate 8 is slidably connected to the pre-set matching groove inside the horizontal rail 4. The surface of the first limiting plate 8 is at the same level as the side of the baffle 5. This setting can ensure that the side of the baffle 5 is flat after installation, avoid gaps between it and the adjacent baffle 5, prevent the filling material from leaking from the gaps, and improve the sealing performance.

[0027] like Figure 5 As shown: Multiple second limiting plates 12, adapted to the vertical rail 3, are vertically fixed to the rear surface of the horizontal rail 4 to ensure structural strength during sliding. The second limiting plates 12 ensure even force distribution on the horizontal rail 4, preventing tilting. Second connecting rods 13, made of a material compatible with the first connecting rod 9, are installed between the multiple second limiting plates 12 to connect them into a whole, enhancing the stability of the sliding connection between the horizontal rail 4 and the vertical rail 3 and preventing deformation.

[0028] like Figure 1 and Figure 6As shown: The second limiting plate 12 is slidably connected inside the vertical rail 3, which facilitates the quick adjustment of the position of the horizontal rail 4. The second limiting plate 12 is fully embedded in the slide rail to form a vertical guide structure, ensuring that the horizontal rail 4 slides accurately along the vertical rail 3 and avoids deviation to ensure the accuracy of the template assembly.

[0029] like Figure 1 and Figure 6 As shown: Multiple support rods 2, made of high-strength alloy steel pipes, are distributed crisscrossly on the support frame 1 to adapt to the humid and high-pressure working conditions downhole and to prevent rust and breakage. The support rods 2 form a triangular support or grid support structure to enhance the load-bearing capacity of the support frame 1. The ends of multiple support rods 2 are pre-threaded with external threads and are equipped with fixing nuts that are compatible with the external threads to improve installation adaptability.

[0030] like Figure 3 As shown: The rear surface of the baffle 5 is uniformly equipped with reinforcing ribs 7 made of strip steel plates, which ensures that the baffle 5 is subjected to uniform force, enhances the bending and deformation resistance of the baffle 5, prevents it from sinking and breaking due to excessive pressure during filling, extends its service life and ensures the stability of the sealing.

[0031] Working principle: First, the support frame 1 is placed at the location to be sealed in the goaf of the coal mine. Then, according to the transverse width of the goaf, multiple baffles 5 are slidably spliced ​​together along the interior of the transverse rail 4 via the first limiting plate 8 on their rear surfaces. The first connecting rod 9 between the first limiting plates 8 can enhance the connection stability between the baffles 5 and the transverse rail 4, preventing individual baffles 5 from shifting under force. After the baffles 5 are fully spliced ​​inside the lowermost transverse rail 4, baffles 5 are then spliced ​​inside the upper transverse rail 4, from bottom to top until the goaf section is completely covered.

[0032] Plugs 10 are installed at the ends of the vertical rail 3 and the horizontal rail 4, ensuring that the ends of the plugs 10 are fully fitted to the inner spaces of the vertical rail 3 and the horizontal rail 4. The plugs 10 are then fastened to the vertical rail 3 and the horizontal rail 4 using fixing bolts 11. The plugs 10 can provide pressure and limit to the first limiting plate 8 and the second limiting plate 12, eliminating the need to fix the baffles 5 and the horizontal rail 4 individually, thus quickly completing the overall structural locking and improving installation efficiency.

[0033] Through the through hole 6 above the baffle 5, special coal mining filling material is injected into the goaf via a conveying pipeline. During the injection process, the reinforcing ribs 7 on the rear surface of the baffle 5 can enhance the baffle 5's resistance to bending and deformation, preventing the baffle 5 from sinking or breaking due to excessive filling material pressure, ensuring stable injection operation. After the filling material solidifies, the goaf can be effectively filled.

[0034] 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.

Claims

1. A backfilling template for coal mining comprising a support frame (1), characterised in that: The support frame (1) is equipped with multiple vertical rails (3) on one side, and multiple horizontal rails (4) are slidably connected to one side of the multiple vertical rails (3). Multiple baffles (5) for sealing the goaf are slidably connected to one side of the multiple horizontal rails (4). Through holes (6) for injecting filling material are opened above the multiple baffles (5). A plug (10) is installed at one end of each of the vertical rail (3) and the horizontal rail (4). The end of the plug (10) is adapted to the space inside the vertical rail (3) and the horizontal rail (4). A fixing bolt (11) is installed between the vertical rail (3) and the horizontal rail (4) and the plug (10).

2. A backfilling template for coal mining according to claim 1, characterised in that: The rear surface of the baffle (5) is provided with a plurality of first limiting plates (8), and a first connecting rod (9) is provided between the plurality of first limiting plates (8).

3. A backfilling template for coal mining according to claim 2, characterised in that: The first limiting plate (8) is slidably connected to the inside of the horizontal rail (4), and the surface of the first limiting plate (8) is at the same level as the side of the baffle (5).

4. A backfilling template for coal mining according to claim 1, characterised in that: The rear surface of the horizontal rail (4) is equipped with a plurality of second limiting plates (12), and a second connecting rod (13) is installed between the plurality of second limiting plates (12).

5. A backfilling template for coal mining according to claim 4, characterised in that: The second limiting plate (12) is slidably connected to the inside of the vertical rail (3).

6. A backfilling template for coal mining according to claim 1, characterised in that: The support frame (1) is equipped with a plurality of support rods (2), and the ends of the plurality of support rods (2) are fitted with fixing nuts.

7. A filling template for coal mining according to claim 1, characterized in that: The rear surface of the baffle (5) is uniformly equipped with reinforcing ribs (7).

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