Safety equipment for coal mine engineering

Abstract

The safety equipment for the coal mine engineering comprises a protection mechanism, the front side and the rear side of the upper portion of a bottom plate are fixedly connected with first hydraulic cylinders, fixing plates are fixedly connected between the upper portions of the front hydraulic cylinder and the rear hydraulic cylinder, and the protection mechanism is arranged between the fixing plates. Compared with the prior art, the protection mechanism has the advantages that the protection mechanism is combined into an arch-shaped supporting face through the supporting plates, the supporting face can be well matched with a vault of a coal mine roadway, and therefore the contact area between the supporting plates and the top of the roadway is increased, force can be conveniently transmitted to the supporting plates by a coal mine, the consolidation effect on the coal mine is improved, and the safety of the coal mine is improved. Meanwhile, a trapezoidal frame, a connecting rod, a shaft rod II and a hydraulic cylinder II are matched to control the supporting plate to rotate, so that the whole supporting surface shrinks inwards or expands outwards, the curvature radius of the supporting surface is adjusted according to the size of a coal mine tunnel and different curvature radiuses of a vault, and the application range is widened.

Description

Technical Field

[0001] This utility model relates to the field of coal mine engineering technology, specifically to a safety device for coal mine engineering. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to excavate tunnels underground to mine coal. In order to ensure the safety of coal miners, safety equipment for support and protection is usually installed inside the tunnels to improve the stability of the coal mine.

[0003] The safety equipment for coal mine engineering described in publication CN216198206U features an adjustment component on the output shaft of a hydraulic cylinder. This component allows for angle adjustment of the supporting top plate, adapting to different support environments. It has a wide range of applications, is easy to adjust, and convenient to use. Furthermore, the supporting base plate includes an adjustable caster assembly and a support assembly. The support assembly provides support for the equipment, while the adjustable caster assembly facilitates adjustment, allowing switching between mobile and stationary modes, further improving usability. However, the existing technology still has some drawbacks:

[0004] 1. Although the existing technology allows for adjustable roof support, the roof of coal mine roadways is usually arched, which can better bear the force and improve stability. However, the two supporting roof plates of the existing technology are flat plates, which are only suitable for regular triangles. They cannot fit well with the arched roadway roof, resulting in poor reinforcement of the coal mine and insufficient practicality.

[0005] 2. Existing technology relies on only two ropes to stabilize the supporting top plate. The ropes are relatively weak, resulting in insufficient support capacity of the supporting plate, poor protection effect, and inability to guarantee worker safety.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The technical problem to be solved by this utility model is to address the above-mentioned issues and provide a safety device for coal mine engineering.

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a safety device for coal mine engineering, including a base plate, wherein there are two base plates arranged in parallel, and a hydraulic cylinder is fixedly connected to the front and rear sides of the upper part of the base plate, and a fixing plate is fixedly connected between the upper parts of the front and rear hydraulic cylinders. As an improvement, it further includes:

[0009] The protective mechanism, located between fixed plates, includes a first connecting block, a support plate, a second connecting block, a first shaft, a trapezoidal frame, a connecting rod, a second shaft, and a second hydraulic cylinder. The first connecting block is fixedly connected to the front and rear ends of the upper part of the fixed plate. Several support plates are arranged between the upper parts of the fixed plate, and the support plates are assembled in an arch shape. The second connecting blocks are respectively located at the front and rear ends of both sides of the support plate. Adjacent second connecting blocks are staggered and overlapped. The second connecting blocks closer to the first connecting block are staggered and overlapped with the first connecting block. The first shaft passes through the front and rear second connecting blocks and between the front and rear first connecting blocks and the second connecting blocks. Adjacent second connecting blocks and adjacent first connecting blocks are rotatably connected through the first shaft. The trapezoidal frame is fixedly connected to the front and rear ends of the lower part of the support plate. The connecting rod is rotatably connected to two adjacent corners at the lower front end of the trapezoidal frame. The lower ends of adjacent connecting rods are rotatably connected through the second shaft. The second shaft passes through the corresponding front and rear connecting rods. A second hydraulic cylinder is rotatably connected between the second shaft and the middle of the corresponding first shaft.

[0010] As an improvement, the lower part of the base plate is equipped with casters at the front and rear ends.

[0011] As an improvement, a positioning plate is provided at the lower part of the base plate, the positioning plate is located between the moving wheels, a screw is rotatably connected to the middle of the upper part of the positioning plate, the screw is threadedly connected to the base plate and extends to the upper part of the base plate, a knob is provided at the upper end of the screw, and guide rods are fixedly connected to the front and rear ends of the upper part of the positioning plate, the guide rods penetrate the base plate.

[0012] As an improvement, the lower part of the positioning plate is provided with several evenly distributed positioning rods.

[0013] As an improvement, the lower end of the positioning rod is set to be tapered.

[0014] As an improvement, the trapezoidal frame has an inverted trapezoidal cross-section, and two adjacent connecting rods and adjacent sides of two adjacent trapezoidal frames combine to form a rhombus.

[0015] As an improvement, the number of support plates shall be no less than seven.

[0016] The advantages of this utility model compared with the prior art are as follows: 1. The protective mechanism of this utility model is formed by setting no less than 7 support plates, connecting blocks one and two, and shaft one to form an arched support surface between the upper part of the fixed plate. This support surface can be well adapted to the arch of the coal mine roadway, thereby increasing the contact area between the support plate and the top of the roadway, making it easier for the coal mine to transfer force to the support plate and improving the consolidation effect of the coal mine. At the same time, in conjunction with the trapezoidal frame, connecting rod, shaft two and hydraulic cylinder two, the rotation of the support plate can be controlled, so that the entire support surface can be contracted inward or expanded outward. Thus, the curvature radius of the support surface can be adjusted according to the size of the coal mine roadway and the curvature radius of the arch, thereby improving the applicability.

[0017] 2. This utility model, through the connection and combination between the trapezoidal frame and the connecting rod, allows the force on the support plate to be transmitted through the trapezoidal frame to the connecting rod, and then from the connecting rod to the shaft, thereby evenly distributing the pressure in multiple directions, greatly improving the overall compressive strength and support capacity of the equipment, enhancing the protective effect, and ensuring the safety of workers. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a safety device for coal mine engineering according to this utility model.

[0019] Figure 2 This utility model provides a schematic diagram of the protective mechanism structure of a safety device for coal mine engineering. Figure 1 .

[0020] Figure 3 This utility model provides a schematic diagram of the protective mechanism structure of a safety device for coal mine engineering. Figure 2 .

[0021] Figure 4 This is a schematic diagram of the positioning plate, positioning rod, and part of the mechanism structure of a safety equipment for coal mine engineering according to this utility model.

[0022] Figure 5 This is a front cross-sectional schematic diagram of a safety device for coal mine engineering according to this utility model.

[0023] As shown in the figure: 1. Base plate; 2. Hydraulic cylinder one; 3. Fixing plate; 4. Protective mechanism; 401. Connecting block one; 402. Support plate; 403. Connecting block two; 404. Shaft one; 405. Trapezoidal frame; 406. Connecting rod; 407. Shaft two; 408. Hydraulic cylinder two; 5. Moving wheel; 6. Positioning plate; 7. Screw; 8. Knob; 9. Guide rod; 10. Positioning rod. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Combined with appendix Figure 1-5 This utility model is provided with two base plates 1, which are arranged in parallel. Hydraulic cylinder 2 is fixedly connected to the front and rear sides of the upper part of the base plate 1. A fixing plate 3 is fixedly connected between the upper parts of the front and rear hydraulic cylinders 2. A protective mechanism 4 is provided between the upper parts of the fixing plate 3, including a connecting block 401, a support plate 402, a connecting block 403, a shaft 404, a trapezoidal frame 405, a connecting rod 406, a shaft 407, and a hydraulic cylinder 408. The connecting block 401 is welded and fixed to the front and rear ends of the upper part of the fixing plate 3. Several support plates 402 are provided between the upper parts of the fixing plate 3. The number of support plates 402 is not less than 7, and these support plates 402 are combined to form an arched support surface. This support surface can be well adapted to the arched top of the coal mine roadway, thereby increasing the contact area between the support plate 402 and the top of the roadway, making it easier for the coal mine to transfer force to the support plate and improving the consolidation effect of the coal mine.

[0026] Connecting blocks 2 403 are respectively provided at the front and rear ends of both sides of the support plate 402, and adjacent connecting blocks 2 403 are staggered and overlapped. The connecting blocks 2 403 near the connecting block 1 401 are staggered and overlapped with the connecting block 1 401. A shaft 1 404 is passed through between the front and rear connecting blocks 2 403. The connecting blocks 2 403 are rotatably sleeved on the outside of the shaft 1 404, so that the two adjacent support plates 402 are rotatably connected to the shaft 1 404 through the connecting blocks 2 403. A shaft 404 is also inserted between connecting block 401 and connecting block 403. Connecting block 401 is rotatably sleeved on the outside of shaft 404, so that the support plates 402 at both ends are rotatably connected to the fixed plate 3 through connecting block 401, connecting block 403 and shaft 404, ensuring the stability of the overall arch of the support plate 402, so that the support plate 402 can distribute and transmit the pressure to the fixed plate 3, and the fixed plate 3 then transmits the pressure to the ground through hydraulic cylinder 2 and base plate 1.

[0027] Trapezoidal frames 405 are welded and fixed to the front and rear ends of the lower part of the support plate 402. The cross-sectional shape of the trapezoidal frame 405 is an inverted trapezoid, with a smaller bottom end and a larger top end. Connecting rods 406 are rotatably connected to the two adjacent corners of the lower front side of the trapezoidal frame 405. That is, there is no connecting rod 406 at the corner of the trapezoidal frame 405 at both ends near the fixed plate 3. The lower ends of two adjacent connecting rods 406 are rotatably connected by a shaft 407, and the shaft 407 passes through the hinged ends of the corresponding connecting rods 406. This allows the adjacent sides of the two adjacent connecting rods 406 and the two adjacent trapezoidal frames 405 to form a rhombus. This allows the pressure on the support plate 402 to be transmitted through the trapezoidal frame 405 to the connecting rods 406, and then from the connecting rods 406 to the shaft 407. This distributes the pressure evenly and in multiple directions, greatly improving the overall compressive strength and support capacity of the equipment, enhancing the protective effect, and ensuring the safety of workers.

[0028] A hydraulic cylinder 408 is rotatably connected between the second shaft 407 and the corresponding first shaft 404. The extension or retraction of the hydraulic cylinder 408 causes the connecting rod 406 to deform. When the hydraulic cylinder 408 extends, it pushes the second shaft 407 away from the first shaft 404, causing the connecting rod 406 to rotate, reducing the inner angle of the hinged end of the connecting rod 406. The connecting rod 406 pulls the lower ends of the trapezoidal frame 405 closer together, causing the trapezoidal frame 405 to rotate the support plate 402 downwards, thus causing the entire support surface to contract inwards, reducing the radius of curvature. When hydraulic cylinder 2 408 shortens, it pulls shaft 2 407 closer to shaft 1 404, causing connecting rod 406 to rotate and increasing the inner angle of the hinge end of connecting rod 406. Connecting rod 406 pushes the lower end of trapezoidal frame 405 away from each other, and trapezoidal frame 405 drives support plate 402 to rotate upward, thereby opening the entire support surface outward and increasing the radius of curvature. This allows the radius of curvature of the support surface to be adjusted according to the size of the coal mine roadway and the different radii of curvature of the arch, thus improving the applicability. Hydraulic cylinder 2 can be adjusted as the support plates 402 at both ends move up and down.

[0029] The base plate 1 has movable wheels 5 at its front and rear ends. A positioning plate 6 is located at the bottom of the base plate 1 and is positioned between the movable wheels 5. A screw 7 is rotatably connected to the upper middle of the positioning plate 6. The screw 7 is threaded to the base plate 1 and extends to the upper part of the base plate 1. A knob 8 is located at the upper end of the screw 7. A guide rod 9 is fixedly connected to the front and rear ends of the upper part of the positioning plate 6 and passes through the base plate 1. Several evenly distributed positioning rods 10 are located at the lower part of the positioning plate 6. The lower end of the positioning rod 10 is tapered. By rotating the knob 8, the screw 7 is rotated. In conjunction with the guide rod 9, the positioning plate 6 can be moved up and down, so that the tapered end of the positioning rod 10 contacts the ground, increasing the friction with the ground and improving the support capacity and stability.

[0030] In specific implementation of this utility model, such as Figure 1 As shown, the equipment is transported to the location requiring protection in the coal mine roadway by the moving wheels 5. The hydraulic cylinder 408 is extended and retracted according to the size of the coal mine roadway and the radius of curvature of the arch. The protective mechanism 4, in conjunction with the hydraulic cylinder 2, causes the entire support surface to retract inward or expand outward, adjusting the radius of curvature of the support surface so that the support plate 402 can better fit the arch of the coal mine roadway. Rotating the knob 8, in conjunction with the screw 7 and the guide rod 9, controls the positioning plate 6 to move downward, so that the conical end of the positioning rod 10 contacts the ground to position the equipment, thus completing the protective support for the roadway.

[0031] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The specific implementation of this disclosure omits detailed descriptions of known functions and components. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments. Hydraulic cylinder 2 and hydraulic cylinder 408 in the device are connected to an external hydraulic system. Since the hydraulic system is common knowledge in the field and is not an improvement point of this case, it will not be described in detail here.

[0032] 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 safety device for coal mine engineering, comprising a base plate (1), wherein there are two base plates (1) arranged in parallel, and a hydraulic cylinder (2) is fixedly connected to the front and rear sides of the upper part of the base plate (1), and a fixing plate (3) is fixedly connected between the upper parts of the front and rear hydraulic cylinders (2), characterized in that, Also includes: The protective mechanism (4) is located between the fixed plates (3) and includes a connecting block 1 (401), a support plate (402), a connecting block 2 (403), a shaft 1 (404), a trapezoidal frame (405), a connecting rod (406), a shaft 2 (407), and a hydraulic cylinder 2 (408). The connecting block 1 (401) is fixedly connected to the front and rear ends of the upper part of the fixed plate (3). Several support plates (402) are arranged between the upper parts of the fixed plates (3). The support plates (402) are arranged in an arch shape. The connecting blocks 2 (403) are respectively arranged at the front and rear ends on both sides of the support plates (402). Two adjacent connecting blocks 2 (403) are staggered and overlapped. The connecting blocks 2 (403) closer to the connecting block 1 (401) are connected to the connecting block 1 (401). The components are arranged in an overlapping manner. The first shaft (404) passes through the front and rear connecting blocks (403) and the front and rear connecting blocks (401) and connecting blocks (403). Adjacent connecting blocks (403) and adjacent connecting blocks (401) and connecting blocks (403) are rotatably connected by the first shaft (404). The trapezoidal frame (405) is fixedly connected to the front and rear ends of the lower part of the support plate (402). The connecting rod (406) is rotatably connected to two adjacent corners of the lower front side of the trapezoidal frame (405). The lower ends of adjacent connecting rods (406) are rotatably connected by the second shaft (407). The second shaft (407) and the corresponding first shaft (404) are rotatably connected by the second hydraulic cylinder (408).

2. The safety equipment for coal mine engineering according to claim 1, characterized in that: The bottom plate (1) is provided with casters (5) at the front and rear ends respectively.

3. The safety equipment for coal mine engineering according to claim 2, characterized in that: A positioning plate (6) is provided at the lower part of the base plate (1). The positioning plate (6) is located between the moving wheels (5). A screw (7) is rotatably connected to the middle of the upper part of the positioning plate (6). The screw (7) is threadedly connected to the base plate (1) and extends to the upper part of the base plate (1). A knob (8) is provided at the upper end of the screw (7). A guide rod (9) is fixedly connected to the front and rear ends of the upper part of the positioning plate (6). The guide rod (9) passes through the base plate (1).

4. A safety device for coal mine engineering according to claim 3, characterized in that: The lower part of the positioning plate (6) is provided with several evenly distributed positioning rods (10).

5. A safety device for coal mine engineering according to claim 4, characterized in that: The lower end of the positioning rod (10) is tapered.

6. A safety device for coal mine engineering according to claim 1, characterized in that: The trapezoidal frame (405) has an inverted trapezoidal cross-section, and the adjacent sides of two adjacent connecting rods (406) and two adjacent trapezoidal frames (405) form a rhombus.

7. A safety device for coal mine engineering according to claim 1, characterized in that: The number of support plates (402) shall not be less than 7.

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