Tunneling shield equipment for coal mining

Abstract

The utility model discloses tunneling shield equipment for coal mining, which comprises a vehicle body, a bearing block is fixedly connected to the top of the vehicle body, a shield assembly is arranged on the side edge of the bearing block, a plurality of supporting assemblies are arranged on the two sides of a walking assembly, and each supporting assembly comprises a first support and a second support. One end of the first support and one end of the second support are both rotationally connected with a fixed seat, the other end of the first support and the other end of the second support are both rotationally connected with a movable frame, the bottom of the movable frame is rotationally connected with a rotating seat, the bottom of the rotating seat is fixedly connected with a supporting plate, and an electric pusher is arranged on the side edge of the movable frame. The output end of the electric pusher pushes outwards, so that the movable frame moves outwards and downwards under the constraint of the first support and the second support, the rotating base and the supporting plate are driven to synchronously move to make contact with the ground, the effects of increasing the ground contact area of equipment and improving stability are achieved, the problem that the supporting stability of the equipment is insufficient is solved, and operation safety and reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of tunneling protection equipment technology, specifically to a tunneling protection device used in coal mining. Background Technology

[0002] In coal mining, tunneling shield equipment is a key piece of equipment for ensuring operational safety and efficiency. It needs to provide reliable roof support and equipment protection in the complex and ever-changing underground environment, preventing accidents such as roof collapses, ensuring the safety of workers and equipment, and creating a stable working space for the continuous progress of coal mining.

[0003] Currently, the tunneling shield equipment used in coal mines mostly adopts traditional rigid support structures and fixed protective plate designs. The rigid support structure usually consists of fixed columns and roof beams, which are fixed in the roadway by mechanical connection, using the vertical support force of the columns to bear the pressure of the roof; the fixed protective plate is installed on the equipment by welding or bolting to protect the working area.

[0004] However, existing tunneling shield equipment has significant drawbacks in practical applications. Traditional rigid support structures are difficult to adapt to complex and changing geological conditions. When encountering roof undulations or inclinations, they cannot flexibly adjust the support angle and position, resulting in a limited contact area with the ground and insufficient support stability. This can lead to uneven local stress or even overall instability, greatly threatening the safety and reliability of coal mining operations. At the same time, the disassembly and maintenance of fixed protective plates require a large number of tools for cumbersome welding, cutting, or bolt removal and assembly operations. The process is complex and time-consuming, seriously affecting equipment maintenance efficiency and increasing maintenance costs and downtime. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a tunneling shield device for coal mining, aiming to improve the problem of insufficient equipment support stability in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tunneling shielding device used in coal mining includes a vehicle body, with traveling components on both sides of the vehicle body, a load-bearing block fixedly connected to the top of the vehicle body, a shielding component on the side of the load-bearing block, and multiple support components on both sides of the traveling components.

[0008] The support assembly includes a bracket one and a bracket two. Each of the brackets one and two is rotatably connected to a fixed seat at one end. The side walls of the fixed seats are fixedly connected to the outer wall of the walking assembly. Each of the brackets one and two is rotatably connected to a movable frame at the other end. The bottom of the movable frame is rotatably connected to a rotating seat. The bottom of the rotating seat is fixedly connected to a support plate. An electric pusher is provided on the side of the movable frame. The bottom of the electric pusher is rotatably connected to the outer wall of the walking assembly. The output end of the electric pusher is rotatably connected to the inside of the top of the movable frame.

[0009] As a further description of the above technical solution:

[0010] The walking assembly includes track wheels located on the left and right sides of the vehicle body. Side guard plates are provided on the sides of the track wheels, and the side walls of the side guard plates are fixedly connected to the side walls of the vehicle body.

[0011] As a further description of the above technical solution:

[0012] The shielding assembly includes a fixing plate, a fixing frame is fixedly connected to the bottom of the fixing plate, a fixing block is provided on the side of the fixing plate, the bottom of the fixing block is fixedly connected to the top of the bearing block, and the side wall of the fixing plate is rotatably connected to the side wall of the fixing block.

[0013] As a further description of the above technical solution:

[0014] The bottom of the fixed plate is provided with symmetrical hydraulic devices, the bottom of which is rotatably connected to the inside of the vehicle body, and the output end of which is rotatably connected to the bottom of the fixed frame.

[0015] As a further description of the above technical solution:

[0016] Multiple buffer pads are fixedly connected to the top of the fixed plate. The buffer pads are distributed in a rectangular array. The outer walls on both sides of the fixed plate are provided with symmetrical locking holes. A protective plate is slidably connected to the top of the fixed plate.

[0017] As a further description of the above technical solution:

[0018] The protective plate has symmetrical locking posts on both sides inside, and the locking posts are located at the same positions as the locking holes. Each locking post has a handle fixedly connected to one end, and the handle is located on the outer wall of the protective plate.

[0019] As a further description of the above technical solution:

[0020] Each locking post has a limit block fixedly connected to its outer wall, and the outer walls of the limit blocks are slidably connected inside the shield plate.

[0021] As a further description of the above technical solution:

[0022] Each locking post is fitted with a limiting spring on its outer wall. One end of each limiting spring is fixedly connected to the side wall of the limiting block, and the other end of each limiting spring is fixedly connected to the inside of the shield plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the output end of the electric actuator pushes outward, causing the movable frame to move outward and downward under the constraint of bracket one and bracket two, driving the rotating seat and support plate to move synchronously to contact the ground, thereby increasing the contact area of ​​the equipment and improving its stability. This solves the problem of insufficient equipment support stability and improves the safety and reliability of operation.

[0025] 2. In this utility model, pulling the handle causes the limit spring to compress and the limit block and locking pin to move outward. When the locking pin disengages from the locking hole inside the fixing plate, the protective plate can be removed. During installation, align the locking pin with the locking hole, release the handle, and the limit spring pushes the locking pin back into the locking hole to fix the protective plate. This achieves the effect of quick disassembly and assembly, solves the problem of inconvenient disassembly and maintenance of the protective plate, and improves the efficiency and practicality of equipment maintenance. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a tunneling shield device for coal mining proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the fixing frame structure of a tunneling shield device used in coal mining, as proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of a support structure for a tunneling shield device used in coal mining, as proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the shield plate structure of a tunneling shield device used in coal mining according to the present invention.

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0031] In the diagram: 1. Vehicle body; 2. Load-bearing block; 3. Side guard plate; 4. Track wheel; 5. Fixed block; 6. Hydraulic unit; 7. Fixed frame; 8. Fixed plate; 9. Protective plate; 10. Support 1; 11. Fixed seat; 12. Electric thruster; 13. Support 2; 14. Movable frame; 15. Rotating seat; 16. Support plate; 17. Buffer pad; 18. Locking hole; 19. Pull handle; 20. Locking pin; 21. Limiting block; 22. Limiting spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-3 The present invention provides a technical solution: a tunneling shield device used in coal mining, including a car body 1, which is a basic load-bearing structure. The car body 1 is welded from high-strength low-alloy wear-resistant steel, which has good impact resistance and wear resistance. It is used to support the various components of the equipment and serve as a mobile carrier. Walking components are provided on both sides of the car body 1 to provide mobility for the equipment and meet the travel needs of complex terrain in underground coal mines. A load-bearing block 2 is fixedly connected to the top of the car body 1. The load-bearing block 2 is made of cast steel and is used to support and fix the shield components. Shield components are provided on the sides of the load-bearing block 2 to protect the coal mine tunneling operation area. Multiple support components are provided on both sides of the walking components to enhance the stability of the equipment during operation.

[0034] The support assembly includes bracket 10 and bracket 2 13. Both bracket 10 and bracket 2 13 are forged and machined from high-strength alloy steel, possessing high strength and toughness. One end of each bracket 10 and bracket 2 13 is rotatably connected to a fixed seat 11 via a pin. The fixed seat 11 is made of cast steel, and its sidewalls are welded to the outer wall of the traveling assembly, serving as the support foundation for the rotation of bracket 10 and bracket 2 13. The other end of each bracket 10 and bracket 2 13 is rotatably connected to a movable frame 14 via a pin. The movable frame 14 is welded from rectangular steel tubing and is used to connect bracket 10, bracket 2 13, and the rotating seat 15. The bottom of the movable frame 14 is rotatably connected to a rotating seat 15 via bearings. A support plate 16 is fixedly connected to the bottom of the rotating seat 15. The support plate 16 is made of wear-resistant steel plate and is used to increase the contact area between the equipment and the ground, improving equipment stability. An electric actuator 12 is installed on the side of the movable frame 14. The outer shell of the electric actuator 12 is made of aluminum alloy and integrates a motor, screw drive mechanism, and control system. This is existing technology and will not be described in detail here. It provides power for the movement of the movable frame 14. The bottom of the electric actuator 12 is rotatably connected to the outer wall of the traveling assembly via a pin. The output end of the electric actuator 12 is rotatably connected to the inside of the top of the movable frame 14 via a pin. The traveling assembly includes... Track wheels 4 are made of high-manganese steel and have anti-slip teeth on the track surface to enhance friction with the ground and ensure stable movement of the equipment on muddy and slippery surfaces in coal mine tunnels. Track wheels 4 are located on the left and right sides of the vehicle body 1. Side guard plates 3 are installed on the sides of track wheels 4. Side guard plates 3 are made of bent and welded steel plates and are bolted to the side wall of the vehicle body 1 to prevent foreign objects such as gravel and coal slag in the coal mine tunnel from entering the track wheels 4 and affecting the normal operation of the walking components. The protective components include a fixing plate 8, which is welded from high-strength low-alloy wear-resistant steel. The bottom of the fixing plate 8 is fixedly connected to a fixed... The fixed frame 7 is welded from rectangular steel pipes and is used to enhance the structural strength of the fixed plate 8. The fixed plate 8 has a fixed block 5 on its side, which provides support for the rotation of the fixed plate 8. The bottom of the fixed block 5 is fixedly connected to the top of the bearing block 2 by welding. The side wall of the fixed plate 8 is rotatably connected to the side wall of the fixed block 5. The bottom of the fixed plate 8 is provided with symmetrical hydraulic devices 6. The hydraulic devices 6 are engineering hydraulic cylinders, which are existing technologies and will not be described in detail here. They are used to drive the rotation of the fixed plate 8. The bottom of the hydraulic device 6 is rotatably connected to the mounting seat inside the vehicle body 1 by a pin. The output end of the hydraulic device 6 is rotatably connected to the bottom of the fixed frame 7 by a pin.

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 4 and Figure 5 This invention provides a technical solution: Multiple buffer pads 17 are bolted to the top of the fixed plate 8. The buffer pads 17 are arranged in a rectangular array and are made of high-elasticity polyurethane rubber material, possessing excellent shock absorption and buffering performance. They are used to absorb the impact of falling rocks from the top of the coal mine, reducing direct impact on the fixed plate 8 and extending its service life. Symmetrical locking holes 18 are provided on both outer walls of the fixed plate 8. These locking holes 18 are machined using drilling and reaming processes and are used to cooperate with locking posts 20 to fix and disassemble the shield plate 9. The shield plate 9 is slidably connected to the top of the fixed plate 8. The shield plate 9 is welded from high-strength low-alloy wear-resistant steel and has an anti-corrosion surface treatment. It is used to directly shield the top of the coal mine, resisting falling rocks, coal chunks, etc. Symmetrical locking post 20 installation chambers are milled on both sides of the shield plate 9, each containing a symmetrical locking post 20 made of stainless steel. The locking pin 20 is positioned identically to the locking hole 18, and is used to lock the shield plate 9 by inserting it into the locking hole 18. A pull handle 19 is fixedly connected to one end of each locking pin 20. The pull handle 19 is made of stainless steel with anti-slip texture and is located on the outer wall of the shield plate 9 for easy worker operation. Limit blocks 21 are fixedly connected to the outer wall of each locking pin 20. The outer walls of the limit blocks 21 are slidably connected to the inside of the shield plate 9, and their outer walls are connected to the guide rails inside the shield plate 9. The groove forms a sliding fit to limit the displacement range of the locking post 20 and prevent it from coming out of the shield plate 9. The outer wall of the locking post 20 is fitted with a limiting spring 22. The limiting spring 22 is made of spring steel. One end of the limiting spring 22 is fixedly connected to the spring seat preset on the side wall of the limiting block 21, and the other end of the limiting spring 22 is fixedly connected to the spring mounting hole inside the shield plate 9. It is used to provide a reset spring force for the locking post 20 and realize the automatic locking and quick disassembly of the shield plate 9.

[0037] Working principle: When using the tunneling shield equipment adopted in coal mining, firstly, after the worker moves the device to the corresponding position, the hydraulic device 6 pushes the fixed plate 8 to rotate, which in turn drives the shield plate 9 to rotate to a horizontal state, supporting the top of the coal mine to achieve the shielding effect. Then, the output end of the electric actuator 12 pushes outward, causing the movable frame 14 to move outward. Then, under the constraint of the first support 10 and the second support 13, the movable frame 14 also moves downward as a whole. The displacement of the movable frame 14 then drives the rotating seat 15 and the support plate 16 to move synchronously, finally making the support plate 16 contact the ground, thereby increasing the ground contact area of ​​the equipment and improving its stability.

[0038] When the protective plate 9 needs to be disassembled, repaired, and cleaned, the worker first locates the pull handles 19 at the four corners of the protective plate 9 and pulls the pull handles 19 outward. The displacement of the pull handles 19 causes the limit spring 22 to be compressed, which also causes the limit block 21 and the locking pin 20 to move outward. When the locking pin 20 is disengaged from the locking hole 18 inside the fixing plate 8, the worker can remove the protective plate 9. During installation, the locking pin 20 is aligned with the locking hole 18, the pull handle 19 is released, and the limit spring 22 pushes the limit block 21 back to its original position, thereby allowing the locking pin 20 to be inserted into the locking hole 18, completing the fixation of the protective plate 9, thus achieving the effect of quick disassembly and assembly of the protective plate 9.

Claims

1. A tunneling shielding device used in coal mining, comprising a vehicle body (1), characterized in that: The vehicle body (1) is provided with walking components on both sides, and a bearing block (2) is fixedly connected to the top of the vehicle body (1). A cover component is provided on the side of the bearing block (2), and multiple support components are provided on both sides of the walking component. The support assembly includes a first bracket (10) and a second bracket (13). One end of each of the first bracket (10) and the second bracket (13) is rotatably connected to a fixed seat (11). The side walls of the fixed seat (11) are fixedly connected to the outer wall of the walking assembly. The other end of each of the first bracket (10) and the second bracket (13) is rotatably connected to a movable frame (14). The bottom of the movable frame (14) is rotatably connected to a rotating seat (15). The bottom of the rotating seat (15) is fixedly connected to a support plate (16). An electric pusher (12) is provided on the side of the movable frame (14). The bottom of the electric pusher (12) is rotatably connected to the outer wall of the walking assembly. The output end of the electric pusher (12) is rotatably connected to the inside of the top of the movable frame (14).

2. The tunneling shielding device used in coal mining according to claim 1, characterized in that: The walking assembly includes track wheels (4), which are located on the left and right sides of the vehicle body (1). Side guard plates (3) are provided on the sides of the track wheels (4), and the side walls of the side guard plates (3) are fixedly connected to the side walls of the vehicle body (1).

3. The tunneling protection equipment used in coal mining according to claim 1, characterized in that: The shielding assembly includes a fixing plate (8), a fixing frame (7) is fixedly connected to the bottom of the fixing plate (8), a fixing block (5) is provided on the side of the fixing plate (8), the bottom of the fixing block (5) is fixedly connected to the top of the bearing block (2), and the side wall of the fixing plate (8) is rotatably connected to the side wall of the fixing block (5).

4. The tunneling protection equipment used in coal mining according to claim 3, characterized in that: The bottom of the fixed plate (8) is provided with a symmetrical hydraulic device (6), the bottom of the hydraulic device (6) is rotatably connected to the inside of the vehicle body (1), and the output end of the hydraulic device (6) is rotatably connected to the bottom of the fixed frame (7).

5. A tunneling shielding device for coal mining according to claim 4, characterized in that: The top of the fixed plate (8) is fixedly connected to multiple buffer pads (17), which are distributed in a rectangular array. The outer walls on both sides of the fixed plate (8) are provided with symmetrical locking holes (18). The top of the fixed plate (8) is slidably connected to a shield plate (9).

6. A tunneling shielding device for coal mining according to claim 5, characterized in that: The protective plate (9) has symmetrical locking posts (20) on both sides inside. The locking posts (20) are located at the same position as the locking holes (18). One end of each locking post (20) is fixedly connected to a pull handle (19), which is located on the outer wall of the protective plate (9).

7. A tunneling shield device for coal mining according to claim 6, characterized in that: The outer walls of the locking posts (20) are all fixedly connected to limit blocks (21), and the outer walls of the limit blocks (21) are all slidably connected inside the shield plate (9).

8. A tunneling shield device for coal mining according to claim 7, characterized in that: Each locking post (20) is fitted with a limiting spring (22) on its outer wall. One end of each limiting spring (22) is fixedly connected to the side wall of the limiting block (21), and the other end of each limiting spring (22) is fixedly connected to the inside of the shield plate (9).

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