A coal mine support anti-toppling stable limiting device

Abstract

The application discloses a coal mine support anti-toppling stable limiting device, which comprises a support base, the upper surface of the support base is fixedly provided with a lifting push rod, the telescopic end of the lifting push rod is fixedly provided with a connecting plate, and the upper portion of the connecting plate is fixedly connected with a support top plate; the side portion of the lifting push rod is provided with a support limiting sliding seat, the support limiting sliding seat is slidably provided with a support limiting sliding rod, and the upper end surface of the support limiting sliding rod is fixedly connected with the bottom surface of the connecting plate; an expansion driving assembly is further installed on the support base, the output end of the expansion driving assembly is rotatably connected with a bottom anti-toppling plate, and the bottom anti-toppling plate can be unfolded and folded relative to the support base under the driving of the expansion driving assembly; through the design of the combination of multiple limiting guide, bottom expandable anti-toppling support, lateral auxiliary anti-toppling limiting and storable locking structure, the overall stability and anti-toppling capacity of the coal mine support bracket are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of coal mine roadway support devices, specifically to a coal mine support anti-tipping stabilizing and limiting device. Background Technology

[0002] During the tunneling and mining operations in coal mines, the surrounding rock is prone to deformation, subsidence, and lateral displacement due to the influence of ground stress and mining pressure. To ensure the safety of underground operations, it is necessary to support and protect the roof and surrounding rock on both sides of the tunnel through support supports to prevent roof collapse, rockfall, and other safety accidents. Hydraulic support supports have become the core equipment for coal mine tunnel support at present due to their advantages of convenient lifting and high support strength. Currently, the support base of coal mine support supports has a fixed support area and limited support range. In addition, the supports lack a dedicated lateral limiting and anti-tilting structure. Underground roadways are mostly uneven gravelly coal seam surfaces, resulting in poor contact stability of the base. Affected by lateral surrounding rock pressure, equipment squeezing, or roadway offset stress, the supports are prone to lateral tilting and displacement, which not only leads to support failure but also poses serious safety hazards. Therefore, to solve the above problems, we provide a coal mine support anti-tilting stabilizing limiting device. Summary of the Invention

[0003] This invention provides a coal mine support anti-tipping stabilizing and limiting device. Through the combination of multiple limiting guides, bottom expandable anti-tipping support, lateral auxiliary anti-tipping limiting, and a retractable locking structure, it significantly improves the overall stability and anti-tipping capacity of coal mine support, adapts to complex underground roadway conditions, and simultaneously achieves flexible folding and storage of the anti-tipping structure, reducing the space occupied by the equipment, improving equipment adaptability and safety of use, and ensuring the safe and efficient operation of underground coal mining.

[0004] A coal mine support anti-tipping and stabilizing limiting device includes a support base. A lifting push rod is fixedly mounted on the upper surface of the support base. A connecting plate is fixedly installed at the telescopic end of the lifting push rod, and a support top plate is fixedly connected above the connecting plate. A support limiting slide is installed on the side of the lifting push rod, and a support limiting slide rod is slidably installed inside the support limiting slide. The upper end face of the support limiting slide rod is fixedly connected to the bottom surface of the connecting plate. An extension drive assembly is also installed on the support base. A bottom anti-tipping plate is rotatably connected to the output end of the extension drive assembly. Under the drive of the extension drive assembly, the bottom anti-tipping plate can be extended and retracted relative to the support base.

[0005] Furthermore, the extended drive assembly includes a protective cover, inside which a dual-axis motor is fixedly installed. The two output ends of the dual-axis motor are respectively connected to worm gears, and a turbine gear is meshed on the worm gear. A rotating shaft is fixedly installed at the center of the turbine gear, and the rotating shaft is rotatably mounted on the support base. The end of the rotating shaft is fixedly connected to a bottom anti-tilt plate.

[0006] Furthermore, the outer end of the bottom anti-tilt plate is provided with mounting holes that penetrate both the upper and lower ends of the bottom anti-tilt plate, and fixing nails are installed in the mounting holes.

[0007] Furthermore, a side support assembly is installed on the outer surface of the support limiting slide. The side support assembly includes a side limiting slide fixedly connected to the side support assembly. A side limiting slide rod is slidably installed inside the side limiting slide. A side anti-tilt plate is fixedly connected to the telescopic end of the side limiting slide rod. An anti-tilt push rod is fixedly connected to the side of the side limiting slide rod. The anti-tilt push rod pushes the side limiting slide rod to slide up and down inside the side limiting slide.

[0008] Furthermore, a number of anti-tilt teeth are fixedly installed on the outer surface of the side anti-tilt plate, and the anti-tilt teeth are in the shape of a frustum with a thicker bottom and a thinner top.

[0009] Furthermore, two sets of side support components are symmetrically arranged on the left and right sides of the support base.

[0010] Furthermore, the lifting push rod is driven by hydraulic power, which pushes the support limiting slide rod to slide up and down within the support limiting slide block.

[0011] Furthermore, the bottom of the support base is provided with a storage groove for accommodating the folded bottom anti-tilt plate, and the size of the storage groove is adapted to the outer dimensions of the bottom anti-tilt plate.

[0012] Furthermore, the side of the support base is provided with a storage hole that runs through both the upper and lower ends of the support base for storing the folded ground nail. The size of the storage hole is adapted to the external dimensions of the ground nail.

[0013] Furthermore, an adjustable support leg is fixedly connected to the bottom surface of the support base, and an adjustable support leg is fixedly connected to the bottom surface of the bottom anti-tilt plate.

[0014] In summary, the present invention has the following beneficial effects: 1. This coal mine support anti-tipping stabilizing and limiting device, through the horizontal placement of the support base, relies on the meshing transmission of a dual-axis motor, worm gear and worm wheel to drive the bottom anti-tipping plate to unfold, which can expand the overall support area of ​​the bottom. At the same time, the self-locking characteristics of the worm gear and worm wheel are used to fix the position of the bottom anti-tipping plate. With the fixed ground nails inserted into the installation holes to anchor to the ground, multiple limiting and fixing are achieved, which improves the defects of easy slippage and poor fit stability of the base.

[0015] 2. The anti-tipping and stabilizing limiting device for the coal mine support, when lifted by the lifting push rod, uses the supporting limiting slide rod and the supporting limiting slide seat to guide and ensure stable pressure support of the roof. At the same time, the anti-tipping push rod drives the side anti-tipping plate to fit against the roadway sidewall, and the anti-tipping teeth form an interlocking limiting structure, which effectively offsets the lateral surrounding rock pressure, equipment squeezing and roadway offset stress, avoids lateral tilting and offset of the support, eliminates support failure problems, and eliminates major safety hazards in underground support operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A bottom view; Figure 3 This is a structural schematic diagram of the side support assembly; Figure 4 A bottom view of the supporting base; Figure 5 A schematic diagram of the structure of the extended driver component.

[0017] In the diagram: 1. Support base; 2. Lifting push rod; 3. Connecting plate; 4. Support top plate; 5. Extension drive assembly; 51. Protective cover; 52. Dual-axis motor; 53. Worm gear; 54. Worm wheel; 6. Rotating shaft; 7. Bottom anti-tilt plate; 8. Mounting hole; 9. Fixed ground nail; 10. Side support assembly; 101. Side limiting slide; 102. Side limiting slide rod; 103. Anti-tilt push rod; 11. Side anti-tilt plate; 12. Anti-tilt tooth; 13. Storage slot; 14. Adjustable support leg one; 15. Adjustable support leg two; 16. Support limiting slide; 17. Support limiting slide rod; 18. Storage hole. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] The orientations mentioned in this specification are based on the orientation of the anti-tipping and stabilizing limiting device for coal mine supports of the present invention during normal operation, and do not limit the orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0020] like Figures 1 to 5As shown in the figure, this embodiment discloses a coal mine support anti-tipping stabilizing and limiting device, including a support base 1. The support base 1 is the bearing foundation of the entire device, used to support the upper support structure and various anti-tipping components. A hydraulically driven lifting push rod 2 is fixedly installed on the upper surface of the support base 1. The lifting push rod 2 is the power source for vertical support. A connecting plate 3 is fixedly connected to the telescopic end of the lifting push rod 2. A support roof plate 4 is fixedly connected above the connecting plate 3. The lifting push rod 2 telescopically drives the support roof plate 4 to rise and fall, realizing the close support operation of the roadway roof.

[0021] Two sets of support limiting slides 16 are symmetrically arranged on the left and right sides of the lifting push rod 2. The support limiting slides 16 are fixedly installed on the upper surface of the support base 1. Each support limiting slide 16 has a support limiting slide rod 17 slidably mounted inside it. The top of the support limiting slide rod 17 is fixedly connected to the bottom surface of the connecting plate 3. When the lifting push rod 2 performs telescopic operation, it synchronously drives the support limiting slide rod 17 to slide vertically inside the support limiting slide 16. Through the two sets of symmetrical sliding limiting structures, the lifting trajectory of the connecting plate 3 and the support top plate 4 is precisely limited, preventing the support top plate 4 from horizontally shifting or shaking, and ensuring the stability of the top plate support.

[0022] An extension drive assembly 5 is also installed on the support base 1. The extension drive assembly 5 includes a protective cover 51 fixed to the upper surface of the support base 1. The protective cover 51 serves to protect against dust and prevent damage to the internal transmission structure from underground coal dust and gravel. A dual-axis motor 52 is fixedly installed inside the protective cover 51. The front and rear output ends of the dual-axis motor 52 are coaxially connected to two worm gears 53, and the two worm gears 53 respectively mesh with a set of turbine wheels 54. The worm wheels 54 and worm gears 53 have a mechanical reverse self-locking characteristic, ensuring stable positioning and preventing springback. A rotating shaft 6 is fixedly mounted at the center of the turbine wheel 54. The rotating shaft 6 is rotatably mounted on the support base 1 through bearings. The lower end of the rotating shaft 6 extends to the bottom of the support base 1 and is fixedly connected to the bottom anti-tilt plate 7 at the end. The threads of the worm gears 53 connected to the two output ends of the dual-axis motor 52 are opposite in direction, so that the two worm gears 53 rotate in opposite directions, driving the front and rear bottom anti-tilt plates 7 to retract / expand synchronously. In this embodiment, four sets of bottom anti-tilt plates 7 are provided, with two sets on each of the front and rear sides of the support base 1, corresponding to four independent worm gear 54 and worm 53 transmission structures, which can realize the synchronous rotation and adjustment of the four sets of bottom anti-tilt plates 7.

[0023] The bottom of the support base 1 has storage slots 13 that correspond one-to-one with the four sets of bottom anti-tilt plates 7. The size of the storage slots 13 matches the shape of the bottom anti-tilt plates 7. When the equipment needs to be transported or stored, the dual-axis motor 52 works in the forward direction, driving the turbine 54 to rotate through the worm gear 53, which in turn drives the rotating shaft 6 to rotate, causing the bottom anti-tilt plates 7 to retract inward and be completely stored inside the storage slots 13, keeping the bottom of the support base 1 flat and reducing the space occupied by the equipment. When support work is required, the dual-axis motor 52 works in the reverse direction, driving the bottom anti-tilt plates 7 to unfold and lock outward horizontally, expanding the bottom support area, greatly improving the equipment installation efficiency and the stability of the bottom support, and eliminating the risk of the support shifting and tipping over.

[0024] A mounting hole 8 is provided on the outer end of the bottom anti-tilt plate 7, penetrating the upper and lower end faces. A fixing nail 9 can be detachably installed in the mounting hole 8. A corresponding storage hole 18 is provided on the side of the support base 1, which can be used to store the fixing nail 9 when the bottom anti-tilt plate 7 is folded up, so as to avoid the nail being exposed and affecting the transportation of the equipment. When the bottom anti-tilt plate 7 is fully unfolded, the fixing nail 9 is inserted into the ground through the mounting hole 8 to lock the bottom anti-tilt plate 7 to the ground, completely preventing the bottom of the support from slipping and improving the stability of the support.

[0025] Side support assemblies 10 are fixedly installed on the outer surfaces of both sets of support and limiting slide blocks 16, and the two sets of side support assemblies 10 are arranged symmetrically from left to right. Each side support assembly 10 includes a side limiting slide block 101 fixed to the outside of the support and limiting slide block 16, a side limiting slide rod 102 slidably installed inside the side limiting slide block 101, a side anti-tilt plate 11 fixedly connected to the outer end of the side limiting slide rod 102, and an anti-tilt push rod 103 fixedly connected to the side wall of the side limiting slide rod 102. The anti-tilt push rod 103 is fixedly mounted on the side limiting slide block 101. During operation, the anti-tilt push rod 103 extends and retracts, pushing the side limiting slide rod 102 to slide within the side limiting slide block 101, causing the side anti-tilt plate 11 to push outwards against the sidewall of the roadway, thus achieving lateral support and limiting.

[0026] Multiple sets of anti-tilting teeth 12 are evenly fixed on the outer surface of the side anti-tilting plate 11. The anti-tilting teeth 12 adopt a frustum-shaped structure with a thick bottom and a thin top. This structure can effectively improve the biting friction between the anti-tilting teeth 12 and the tunnel rock wall, prevent the side anti-tilting plate 11 from slipping and detaching from the rock wall, greatly improve the lateral anti-tilting and limiting effect, effectively offset the lateral surrounding rock pressure of the tunnel, and prevent the support from tilting and collapsing laterally.

[0027] The bottom surface of the support base 1 is fixedly connected to two adjustable support legs 14, and the bottom surface of each set of bottom anti-tilt plates 7 is fixedly connected to an adjustable support leg 2 15. Both types of adjustable support legs adopt a spiral adjustable structure, which is convenient to adjust and securely locked. Adjustable support legs 14 and 2 15 can be adapted to uneven gravel ground, quickly level the equipment, and greatly improve the stability of the base support.

[0028] The specific working process of this invention is as follows: After the equipment is transported to the working tunnel, the support height of the adjustable support leg 14 and the adjustable support leg 2 15 are adjusted according to the flatness of the tunnel ground to make the support base 1 be placed horizontally as a whole; then the dual-axis motor 52 is started to drive the bottom anti-tilt plate 7 around the four sides to unfold outward from the storage groove 13 to increase the overall support area of ​​the equipment. After unfolding, the self-locking characteristics of the worm gear 53 and the worm wheel 54 are used to lock the position; then the fixed ground nail 9 is inserted into the mounting hole 8 and driven into the ground to complete the locking.

[0029] Then, the hydraulic lifting push rod 2 is activated, pushing the connecting plate 3 and the supporting roof plate 4 upwards. At the same time, the support limiting slide rod 17 slides vertically along the support limiting slide seat 16, ensuring that the supporting roof plate 4 precisely fits against the roadway roof to complete vertical support. Finally, the anti-tilting push rods 103 on both sides are activated, pushing the side anti-tilting plates 11 to press against the rock walls on both sides of the roadway. The frustum-shaped anti-tilting teeth 12 engage with the rock walls, completing all-round anti-tilting and limiting support. After the operation is completed, the fixing nails 9 are pulled out and stored in the storage hole 18, the bottom anti-tilting plate 7 is folded into the storage slot 13, and the lifting push rod 2 and the side anti-tilting plates 11 are retracted to complete the equipment storage and transportation.

[0030] It should also be noted that, in terms of circuitry and hydraulic structure, the drive and control circuits and hydraulic components of this invention are common and mature technologies. Those skilled in the art can select appropriate circuits and hydraulic components to build the system according to the power requirements and control requirements of the equipment. For power supply and fluid supply components, common general-purpose equipment can be used. The electrical and hydraulic components in this application are all common equipment in the prior art. In addition, the control circuit and hydraulic equipment need to be connected to an external controller or control terminal. The control circuit can be implemented by those skilled in the art through simple programming, and this application will not elaborate further.

[0031] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A coal mine support anti-tipping stabilizing and limiting device, characterized in that, The system includes a support base, on the upper surface of which a lifting push rod is fixedly mounted. A connecting plate is fixedly installed at the telescopic end of the lifting push rod, and a support top plate is fixedly connected above the connecting plate. A support limiting slide is installed on the side of the lifting push rod, and a support limiting slide rod is slidably installed inside the support limiting slide. The upper end face of the support limiting slide rod is fixedly connected to the bottom surface of the connecting plate. An extension drive assembly is also installed on the support base. A bottom anti-tilt plate is rotatably connected to the output end of the extension drive assembly. Under the drive of the extension drive assembly, the bottom anti-tilt plate can be extended and retracted relative to the support base.

2. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, The extended drive assembly includes a protective cover, inside which a dual-axis motor is fixedly installed. The two output ends of the dual-axis motor are respectively connected to worm gears, and a turbine gear is meshed on the worm gear. A rotating shaft is fixedly installed at the center of the turbine gear, and the rotating shaft is rotatably mounted on the support base. The end of the rotating shaft is fixedly connected to a bottom anti-tilt plate.

3. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, The outer end of the bottom anti-tilt plate is provided with a mounting hole that passes through both the upper and lower ends of the bottom anti-tilt plate, and a fixing nail is installed in the mounting hole.

4. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, A side support assembly is installed on the outer surface of the support limiting slide. The side support assembly includes a side limiting slide fixedly connected to the side support assembly. A side limiting slide rod is slidably installed inside the side limiting slide. A side anti-tilt plate is fixedly connected to the telescopic end of the side limiting slide rod. An anti-tilt push rod is fixedly connected to the side of the side limiting slide rod. The anti-tilt push rod pushes the side limiting slide rod to slide up and down inside the side limiting slide.

5. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 4, characterized in that, Several anti-tilt teeth are fixedly installed on the outer surface of the side anti-tilt plate. The anti-tilt teeth are in the shape of a frustum, which is thick at the bottom and thin at the top.

6. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 4, characterized in that, Two sets of side support components are symmetrically arranged on the left and right sides of the support base.

7. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, The lifting push rod is driven by hydraulic power, which pushes the support limiting slide rod to slide up and down within the support limiting slide block.

8. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, The bottom of the support base has a storage slot for accommodating the folded bottom anti-tilt plate, and the size of the storage slot is adapted to the outer dimensions of the bottom anti-tilt plate.

9. The anti-tipping and stabilizing limiting device for coal mine supports according to claim 1, characterized in that, The side of the support base has a storage hole that runs through both the upper and lower ends of the support base and is used to store the folded ground nail. The size of the storage hole is adapted to the external size of the ground nail.

10. A coal mine support anti-tipping stabilizing and limiting device according to claim 1, characterized in that, The bottom surface of the support base is fixedly connected to an adjustable support leg one, and the bottom anti-tilt plate is fixedly connected to an adjustable support leg two.

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