Efficient and safe dismounting device for coal face support

Abstract

The utility model discloses an efficient and safe dismounting device for a coal face support, and belongs to the technical field of coal mine safety auxiliary equipment.The efficient and safe dismounting device comprises a base, a protection plate is fixedly mounted at the top of the base, four symmetrically-arranged rotating wheels are rotationally connected to the bottom of the base, and a handle is fixedly mounted on one side of the protection plate; two supporting strips are installed on one side of the protection plate, and the bottom ends of the supporting strips are fixedly connected with the base. And the supporting protection mechanism comprises a supporting plate, the top of the base is rotationally connected with two symmetrically-arranged supporting rods, and the supporting plate is rotationally connected with the two supporting rods. The hinge rod is rotationally connected with the supporting rod and the base plate, the worm is meshed with the worm wheel, and the worm wheel is in threaded connection with the push rod, so that the rotating driving rod can drive the base to move and further drive the hinge rod to support the supporting plate, the supporting stress of the support is reduced, and the collapse risk during disassembly is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mine safety auxiliary equipment, specifically, it relates to a high-efficiency and safe dismantling device for coal mining face supports. Background Technology

[0002] Coal mining face supports are crucial equipment used to support the roof of the coal mining face, ensuring the safety and smooth progress of coal mining operations. Currently used supports are generally of two types: stack supports and segmented supports. Stack supports primarily consist of a top beam, columns, and a base. The columns are arranged vertically, providing significant support force and directly supporting the roof. They are suitable for working faces with hard, intact roofs, such as coal mines with sandstone or other hard rock strata, effectively preventing roof subsidence. Segmented supports consist of two or more mechanically connected sections, each with independent columns and top beams. They offer good flexibility, can be adjusted according to the shape of the working face and the roof pressure distribution, provide stable support force, and can adapt to a certain degree of roof changes. When the coal mine is completed and the supports need to be dismantled and recycled, a safe dismantling device is generally required for efficient dismantling.

[0003] Currently, during the dismantling of the support frame, the sudden dismantling and retraction could easily cause the top of the mine tunnel to collapse, resulting in damage to the support frame and falling rocks that could injure workers, affecting their safety.

[0004] To address the aforementioned issues, this application proposes an efficient and safe dismantling device for coal mining face supports. Summary of the Invention

[0005] In response to the problems in related technologies, this invention proposes an efficient and safe dismantling device for coal mining face supports to overcome the aforementioned technical problems existing in the prior art.

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

[0007] A high-efficiency and safe dismantling device for a coal mining face support includes a base, a protective plate fixedly installed on the top of the base, four symmetrically arranged wheels rotatably connected to the bottom of the base, a handle fixedly installed on one side of the protective plate, and two support bars installed on one side of the protective plate, with the bottom ends of the support bars fixedly connected to the base.

[0008] The support and protection mechanism includes a support plate, and the top of the base is rotatably connected to two symmetrically arranged support rods, with the support plate rotatably connected to the two support rods;

[0009] The disassembly and retraction mechanism includes a crossbeam, two pull rods are slidably connected to the protective plate, the crossbeam is fixedly connected to the two pull rods, and positioning seats are fixedly installed at both ends of the crossbeam, with wedge-shaped plates rotatably connected to the positioning seats.

[0010] Preferably, the support and protection mechanism further includes two pads, two push rods are slidably connected to the base, the pads are fixedly connected to the corresponding push rods, the same connecting rod is fixedly installed between the two pads, and a hinge rod is rotatably connected to the top of the pad, the hinge rod is rotatably connected to the corresponding support rod, and a rotating wheel is rotatably connected to the bottom of the pad.

[0011] The moving push rod drives the pad to move, the moving pad pushes the hinge rod to change its angle, the hinge rod pushes the support rod to change its angle, and in turn drives the support plate to support the top of the mine tunnel, thereby reducing the stress on the support at the top of the mine tunnel, facilitating the retraction and disassembly of the support, and increasing the safety of the support retraction.

[0012] Preferably, a motor is fixedly installed on one side of the base, and an active rod is fixedly installed on the output shaft of the motor. The active rod is connected to two push rods in a transmission manner.

[0013] The motor's output shaft drives the drive rod to rotate, and the drive rod, through a transmission connection with two push rods, can thus move the push rods.

[0014] Preferably, two worm gears are fixedly installed on the active rod, and two worm wheels are rotatably connected to one side of the base. The worm wheels are threadedly connected to the corresponding push rods, and the worm gears and the corresponding worm wheels mesh with each other. Two fixing boxes are fixedly installed on one side of the base. The fixing boxes are rotatably connected to the active rod, and the fixing boxes are slidably connected to the push rods.

[0015] The rotating drive rod drives the worm wheel to rotate through the meshing of the worm and worm gear. The worm wheel is connected to the push rod by a thread, which in turn drives the push rod to move. Meanwhile, the fixed box is connected to the drive rod by rotation and to the push rod by sliding, which stabilizes the meshing state of the worm and worm wheel.

[0016] Preferably, a limit rod is rotatably connected to the other side of the protective plate, and the limit rod is rotatably connected to the support plate.

[0017] The limiting rod is rotatably connected to the support plate and the protective plate, thereby limiting the angle of the support plate when it moves, which makes it easier for the support plate to fit stably against the top of the mine tunnel.

[0018] Preferably, one end of each of the two pull-back rods is fixedly mounted with the same connecting plate, and a cylinder is fixedly mounted on the other side of the protective plate, with the piston of the cylinder being fixedly connected to the connecting plate.

[0019] The piston of the cylinder moves the pull rod through the connecting plate, and the pull rod moves the crossbeam, which facilitates the disassembly and retraction of the bracket through the wedge-shaped clamp.

[0020] Preferably, two return springs are fixedly installed on the side of the crossbeam near the base, and one end of the return spring is fixedly connected to the corresponding wedge-shaped plate.

[0021] The crossbeam can reset the wedge plate via a return spring. The connection between the wedge plate and the positioning seat is close to the base, so that when the wedge plate is pushed or pulled backward, the side of the wedge plate away from the base is engaged with the positioning seat, thereby enabling the wedge plate to rotate in one direction, which facilitates the one-way pull-back disassembly of the bracket.

[0022] In summary, the technical effects and advantages of this invention are as follows:

[0023] The hinge rod is rotatably connected to the support rod and the pad, and the worm and worm wheel mesh with each other. The worm wheel is threadedly connected to the push rod, which allows the rotating drive rod to move the pad, thereby driving the hinge rod to support the support plate. This reduces the support stress of the bracket and lowers the risk of collapse during disassembly.

[0024] The wedge-shaped clamp is rotated and connected to the positioning seat, and the reset spring resets the wedge-shaped clamp, allowing the base to move the wedge-shaped clamp to one side of the bracket, thereby pulling the bracket back and disassembling it through the wedge-shaped clamp. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0027] Figure 3 This is a schematic diagram of the transmission connection structure between the motor and the push rod of the present invention.

[0028] In the picture:

[0029] 1. Base; 2. Protective plate; 3. Rotary wheel; 4. Support and protective mechanism; 41. Support plate; 42. Support rod; 43. Limiting rod; 44. Pad; 45. Hinge rod; 46. Push rod; 47. Connecting rod; 5. Pull-out mechanism; 51. Crossbeam; 52. Positioning seat; 53. Wedge-shaped clamping plate; 54. Return spring; 55. Pull-back rod; 56. Cylinder; 57. Connecting plate; 6. Motor; 7. Driving rod; 8. Worm gear; 9. Worm wheel; 10. Handle; 11. Support bar; 12. Fixing box. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figure 1-3A high-efficiency and safe dismantling device for a coal mining face support includes a base 1, a protective plate 2 fixedly installed on the top of the base 1, four symmetrically arranged rotating wheels 3 rotatably connected to the bottom of the base 1, a handle 10 fixedly installed on one side of the protective plate 2, and two support bars 11 installed on one side of the protective plate 2, with the bottom end of the support bars 11 fixedly connected to the base 1.

[0032] The support and protection mechanism 4 includes a support plate 41, and two symmetrically arranged support rods 42 are rotatably connected to the top of the base 1. The support plate 41 is rotatably connected to the two support rods 42.

[0033] The disassembly and retraction mechanism 5 includes a crossbeam 51, two pull rods 55 are slidably connected to the protective plate 2, the crossbeam 51 is fixedly connected to the two pull rods 55, and positioning seats 52 are fixedly installed at both ends of the crossbeam 51. A wedge-shaped card plate 53 is rotatably connected to the positioning seat 52.

[0034] Reference Figure 1 and Figure 2 The support and protection mechanism 4 also includes two pads 44. Two push rods 46 are slidably connected to the base 1. The pads 44 are fixedly connected to the corresponding push rods 46. The same connecting rod 47 is fixedly installed between the two pads 44. A hinge rod 45 is rotatably connected to the top of the pads 44. The hinge rod 45 is rotatably connected to the corresponding support rod 42. A rotating wheel is rotatably connected to the bottom of the pads 44. The moving push rod 46 drives the pads 44 to move. The moving pads 44 push the hinge rod 45 to change its angle. The hinge rod 45 pushes the support rod 42 to change its angle, thereby driving the support plate 41 to support the top of the mine tunnel, thereby reducing the stress on the support at the top of the mine tunnel, facilitating the retraction and disassembly of the support, and increasing the safety of the support retraction.

[0035] Reference Figure 3 A motor 6 is fixedly installed on one side of the base 1. A drive rod 7 is fixedly installed on the output shaft of the motor 6. The drive rod 7 is connected to two push rods 46. Two worm gears 8 are fixedly installed on the drive rod 7. Two worm wheels 9 are rotatably connected to one side of the base 1. The worm wheels 9 are threadedly connected to the corresponding push rods 46. The worm gears 8 and the corresponding worm wheels 9 mesh with each other. Two fixing boxes 12 are fixedly installed on one side of the base 1. The fixing boxes 12 are rotatably connected to the drive rod 7 and slidably connected to the push rods 46. The output shaft of the motor 6 drives the drive rod 7 to rotate. The drive rod 7, through its transmission connection with the two push rods 46, can drive the push rods 46 to move.

[0036] Reference Figure 2On the other side of the protective plate 2, a limiting rod 43 is rotatably connected. The limiting rod 43 is rotatably connected to the support plate 41. By rotatably connecting the limiting rod 43 with the support plate 41 and the protective plate 2, the angle of the support plate 41 when it moves can be limited, so that the support plate 41 can be stably attached to the top of the mine tunnel.

[0037] Reference Figure 2 Two pull-back rods 55 are fixedly mounted on the same connecting plate 57 at one end. A cylinder 56 is fixedly mounted on the other side of the protective plate 2. The piston of the cylinder 56 is fixedly connected to the connecting plate 57. Two return springs 54 are fixedly mounted on the side of the crossbeam 51 near the base 1. One end of the return spring 54 is fixedly connected to the corresponding wedge-shaped plate 53. The piston of the cylinder 56 drives the pull-back rod 55 to move through the connecting plate 57. The pull-back rod 55 drives the crossbeam 51 to move, which facilitates the disassembly and retraction of the bracket through the wedge-shaped plate 53. The crossbeam 51 can reset the wedge-shaped plate 53 through the return spring 54. The connection between the wedge-shaped plate 53 and the positioning seat 52 is close to the side of the base 1. When the wedge-shaped plate 53 is pushed and pulled backward, the side of the wedge-shaped plate 53 away from the base 1 is engaged with the positioning seat 52, which allows the wedge-shaped plate 53 to rotate in one direction, which facilitates the one-way pull-back disassembly of the bracket.

[0038] Working principle: During operation, the device is placed below the support frame, and the motor 6 switch is turned on. The output shaft of the motor 6 drives the drive rod 7 to rotate. The rotating drive rod 7, through the meshing of the worm gear 8 and the worm wheel 9, drives the worm wheel 9 to rotate. The worm wheel 9 is threadedly connected to the push rod 46, thus enabling the push rod 46 to move. At the same time, the fixed box 12, through its rotational connection with the drive rod 7 and its sliding connection with the push rod 46, stabilizes the meshing state of the worm gear 8 and the worm wheel 9. The moving push rod 46 drives the pad 44 to move, and the moving pad 44 pushes the hinge rod 45 to change its angle. The hinge rod 45 pushes the support rod 42 to change its angle, thereby driving the support plate 41 upward towards the mine channel. The top is supported to reduce the stress on the support at the top of the mine tunnel, making it easier to retract and disassemble the support, and increasing the safety of the support retraction. When the support needs to be disassembled, the cylinder 56 switch is activated. The piston of the cylinder 56 drives the pull rod 55 to move through the connecting plate 57. The pull rod 55 drives the crossbeam 51 to move. The crossbeam 51 can reset the wedge plate 53 through the return spring 54. The connection between the wedge plate 53 and the positioning seat 52 is close to the side of the base 1, so that when the wedge plate 53 is pushed and pulled backward, the side of the wedge plate 53 away from the base 1 is locked onto the positioning seat 52, thereby allowing the wedge plate 53 to rotate in one direction, which facilitates the one-way pull-back disassembly of the support.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 high-efficiency and safe dismantling device for coal mining face supports, comprising a base (1), characterized in that, A protective plate (2) is fixedly installed on the top of the base (1), and four symmetrically arranged rotating wheels (3) are rotatably connected to the bottom of the base (1). A handle (10) is fixedly installed on one side of the protective plate (2), and two support bars (11) are installed on one side of the protective plate (2). The bottom end of the support bar (11) is fixedly connected to the base (1). The support and protection mechanism (4) includes a support plate (41), and two symmetrically arranged support rods (42) are rotatably connected to the top of the base (1). The support plate (41) is rotatably connected to the two support rods (42). The disassembly and retraction mechanism (5) includes a crossbeam (51), on which two pull rods (55) are slidably connected. The crossbeam (51) is fixedly connected to the two pull rods (55). Positioning seats (52) are fixedly installed at both ends of the crossbeam (51), and wedge-shaped plates (53) are rotatably connected to the positioning seats (52).

2. The efficient and safe dismantling device for coal mining face supports according to claim 1, characterized in that, The support and protection mechanism (4) also includes two pads (44), two push rods (46) are slidably connected on the base (1), the pads (44) are fixedly connected to the corresponding push rods (46), the same connecting rod (47) is fixedly installed between the two pads (44), and a hinge rod (45) is rotatably connected to the top of the pads (44), the hinge rod (45) is rotatably connected to the corresponding support rod (42), and a rotating wheel is rotatably connected to the bottom of the pads (44).

3. The efficient and safe dismantling device for coal mining face supports according to claim 2, characterized in that, A motor (6) is fixedly installed on one side of the base (1), and an active rod (7) is fixedly installed on the output shaft of the motor (6). The active rod (7) is connected to two push rods (46) in a transmission manner.

4. The efficient and safe dismantling device for coal mining face supports according to claim 3, characterized in that, Two worm gears (8) are fixedly installed on the active rod (7). Two worm wheels (9) are rotatably connected to one side of the base (1). The worm wheels (9) are threadedly connected to the corresponding push rods (46). The worm gears (8) and the corresponding worm wheels (9) mesh with each other. Two fixing boxes (12) are fixedly installed on one side of the base (1). The fixing boxes (12) are rotatably connected to the active rod (7), and the fixing boxes (12) are slidably connected to the push rods (46).

5. The efficient and safe dismantling device for coal mining face supports according to claim 1, characterized in that, The other side of the protective plate (2) is rotatably connected to a limiting rod (43), and the limiting rod (43) is rotatably connected to the support plate (41).

6. The efficient and safe dismantling device for coal mining face supports according to claim 5, characterized in that, One end of each of the two pull rods (55) is fixedly mounted with the same connecting plate (57), and the other side of the protective plate (2) is fixedly mounted with a cylinder (56), the piston of the cylinder (56) being fixedly connected to the connecting plate (57).

7. The efficient and safe dismantling device for coal mining face supports according to claim 6, characterized in that, Two return springs (54) are fixedly installed on the side of the crossbeam (51) near the base (1), and one end of the return spring (54) is fixedly connected to the corresponding wedge-shaped plate (53).

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