Hydraulic support auxiliary orientation device

Abstract

This utility model relates to an auxiliary steering device for hydraulic supports, belonging to the technical field of hydraulic support technology. The auxiliary steering device includes: a hydraulic support with a top plate hinged to one side; and an adjustment and switching mechanism, located on the outside of the hydraulic support, for adjusting the friction at the bottom of the hydraulic support. The adjustment and switching mechanism includes a support frame located on the outside of the hydraulic support, with a switching component on one side of the support frame. During steering, the switching component can switch the bottom from a high-friction bearing surface to a low-friction sliding surface, reducing the driving force required for heavy-load steering and pushing, lessening the strain on the cylinder and operators, and improving the efficiency of cleaning and moving the support. After steering, the high-friction support is restored, achieving stable locking and ensuring safety. In low-friction mode, the adjustment component can quickly and accurately fine-tune the angle or position of the support to adapt to different working conditions, avoid tilting and scraping the ground, and improve the continuity and stability of the support.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, and in particular to an auxiliary steering device for hydraulic supports. Background Technology

[0002] Hydraulic supports are key equipment used in underground engineering projects such as coal mines, tunnels, and subways to support the roof and prevent roof falls and collapses. They are typically composed of components such as a top beam, a shield beam, a base, columns, pushing jacks, and moving jacks. During operation, the supports are secured to the roof by the columns and stabilized on the base plate by the base to form support. When advancing the working face or adjusting the roadway layout, the supports need to be pushed and oriented under heavy load to adapt to roadway curves or changes in the working face direction, ensuring continuous and stable support.

[0003] Existing hydraulic supports typically use a large steel base plate in direct contact with the base, achieving stable support through high friction. However, when pushing or turning, this high friction leads to laborious operation, high cylinder thrust, and low efficiency. To reduce friction, some designs add rollers or sliders to the base, but these low-friction structures are often fixed and cannot flexibly switch between support and steering modes, resulting in insufficient stability during support or continued laborious steering. Utility Model Content

[0004] Based on this, it is necessary to provide a hydraulic support auxiliary steering device to address the problems that existing hydraulic support bases are mostly made of large-area steel plates in direct contact with the base plate. Although they can rely on high friction to provide stable support, they are difficult to operate when pushing or turning, have large cylinder thrust, and low efficiency. Some designs that add rollers or sliders under the base can reduce friction, but they are fixed and difficult to switch flexibly between support and steering, resulting in unstable support or still difficult steering.

[0005] A hydraulic support auxiliary steering device includes: a hydraulic support, with a top plate hinged to one side of the hydraulic support; and an adjustment switching mechanism for adjusting the friction force at the bottom of the hydraulic support, the adjustment switching mechanism being disposed on the outside of the hydraulic support; wherein the adjustment switching mechanism includes a support frame disposed on the outside of the hydraulic support, a switching component disposed on one side of the support frame, and an adjustment component disposed on one side of the switching component.

[0006] The switching assembly includes a sealing frame fixedly installed on the outside of the hydraulic support, a support frame slidably installed inside the sealing frame, and a sealing plate fixedly installed on one side of the support frame inside the sealing frame, the sealing plate being slidably connected to the inner wall of the sealing frame.

[0007] A high-pressure pump is fixedly installed on one side of the hydraulic support. The output end of the high-pressure pump is fixedly connected to the sealing frame, and the output end of the high-pressure pump is located on the top of the sealing plate.

[0008] A low-friction plate is fixedly installed at the bottom of the hydraulic support, and a high-friction plate is provided at the bottom of the low-friction plate. The high-friction plate is sleeved on the outside of the low-friction plate and is located on the outside of the low-friction plate.

[0009] The bottom of the hydraulic support has two limiting grooves, which are located on both sides of the low friction plate. Guide blocks are fixedly installed on both sides of the high friction plate. The two guide blocks are slidably connected to the two limiting grooves. Rubber plates are fixedly installed inside the limiting grooves, and the two rubber plates are located on the top of the two guide blocks.

[0010] Multiple friction strips are fixedly installed on the bottom of the high friction plate, and the multiple friction strips are evenly distributed.

[0011] The adjustment assembly includes a rotating block rotatably mounted on the bottom of a low-friction plate, and two adjusting balls rotatably mounted on the bottom of the low-friction plate, the two adjusting balls and the rotating block being distributed in a triangular shape.

[0012] The rotating block is configured as a disc, and the two sides of the low-friction plate are configured as arcs. Beneficial effects

[0013] 1. By switching the component during repositioning, the bottom surface can be changed from a high-friction bearing surface to a low-friction sliding surface, reducing the driving force required for heavy-duty steering and pushing, lessening the strain on the hydraulic cylinder and operators, and improving the efficiency of cleaning and moving the support. After repositioning, the high-friction support is restored to achieve a stable lock and ensure safety. In the low-friction state, the adjustment component can quickly and accurately fine-tune the angle or position of the support to adapt to different working conditions, avoid tilting and scraping the ground, and improve the continuity and stability of the support.

[0014] 2. The rotating block and the two adjusting balls form a three-point support, which contact the ground together under low friction to keep the support stable under heavy load; the rotating block mainly bears the load in the main direction, and the adjusting balls roll with the ground to reduce friction and absorb unevenness, preventing the base from tilting or scraping the ground. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the adjustment and switching mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the high-friction plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the high-friction plate and low-friction plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0021] Figure label:

[0022] 100. Hydraulic support; 200. Top plate; 300. Adjustment and switching mechanism; 310. Support frame; 320. Switching assembly; 321. Sealing frame; 322. Sealing plate; 323. High-pressure pump; 324. High-friction plate; 325. Low-friction plate; 326. Limiting groove; 327. Guide block; 328. Rubber plate; 329. Friction strip; 330. Adjustment assembly; 331. Rotating block; 332. Adjusting ball. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The following is combined with Figures 1-5 This invention describes the hydraulic support auxiliary steering device.

[0025] In one embodiment, a hydraulic support auxiliary steering device includes: a hydraulic support 100, with a top plate 200 hinged to one side of the hydraulic support 100; and an adjustment switching mechanism 300, which is disposed on the outside of the hydraulic support 100 for adjusting the friction force at the bottom of the hydraulic support 100. The adjustment switching mechanism 300 includes a support frame 310 disposed on the outside of the hydraulic support 100, a switching component 320 disposed on one side of the support frame 310, and an adjustment component 330 disposed on one side of the switching component 320.

[0026] In this embodiment, the switching component 320 can convert the bottom from a high-friction bearing surface to a low-friction sliding surface when repositioning is required. This significantly reduces the driving force required for the support to turn and move under heavy loads, reduces the cylinder thrust and operational intensity, and improves cleaning and support relocation efficiency. After repositioning, the switching component 320 restores the high-friction support state, achieving stable locking and ensuring support safety. The adjustment component 330 performs fine-tuning of the angle or position of the hydraulic support 100 in a low-friction state. This allows for quick and precise adjustment of the support direction to suit different working faces and roadway conditions, preventing support tilting or scraping, and improving support continuity and stability.

[0027] It should be noted that the existing hydraulic support 100 auxiliary orientation device typically includes the hydraulic support 100, top beam, base, column, pushing jack, moving jack, support shoe or slider, and basic hydraulic actuator for changing the orientation of the support. The switching component 320 is only arranged between the bottom support frame 310 of the hydraulic support 100 and the ground. It is used to quickly switch between high-friction support surface and low-friction sliding surface between support and orientation conditions. It does not change the original force system and hydraulic system of the support, nor does it affect the normal load-bearing and support functions of the support. The adjustment component 330 is arranged on the outside of the support. It is mainly used to make fine adjustments to the angle or position of the support under low friction conditions. Its working position is independent of the hydraulic circuit of the main body of the hydraulic support 100 and the pushing jack, and does not interfere with the normal lifting, pushing and locking process of the support.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the switching assembly 320 includes a sealing frame 321 fixedly installed on the outside of the hydraulic support 100, a support frame 310 slidably installed inside the sealing frame 321, and a sealing plate 322 fixedly installed on one side of the support frame 310 inside the sealing frame 321. The sealing plate 322 is slidably connected to the inner wall of the sealing frame 321.

[0029] In this embodiment, when it is necessary to support the hydraulic support 100 or switch to the bottom low friction state, high pressure gas can be injected into the sealing frame 321. The pressure is used to push the support frame 310 and the sealing plate 322 to slide along the inner wall of the sealing frame 321, so that the bearing surface at the lower end of the support frame 310 is raised or lowered, thereby realizing the rapid switching between the high friction bearing surface and the low friction sliding surface.

[0030] A high-pressure pump 323 is fixedly installed on one side of the hydraulic support 100. The output end of the high-pressure pump 323 is fixedly connected to the sealing frame 321, and the output end of the high-pressure pump 323 is located on the top of the sealing plate 322.

[0031] In this embodiment, when the support state needs to be switched, the high-pressure pump 323 injects high-pressure oil or high-pressure gas into the sealing frame 321, so that the sealing plate 322 and the support frame 310 move smoothly in the sliding direction within the sealing frame 321, thereby quickly realizing the switching between the high-friction bearing surface and the low-friction sliding surface, without relying on external pressure supply to complete the action.

[0032] It should be noted that the high-pressure pump 323 can be a piston pump, gear pump or diaphragm pump that is compatible with the original hydraulic system of the support, or a small high-pressure air pump. The flow rate and pressure range should be able to meet the needs of rapid completion of switching operations under heavy load conditions, and preferably have the characteristics of being resistant to coal dust, waterproof and explosion-proof.

[0033] A low-friction plate 325 is fixedly installed at the bottom of the hydraulic support 100. A high-friction plate 324 is provided at the bottom of the low-friction plate 325. The high-friction plate 324 is sleeved on the outside of the low-friction plate 325 and is located on the outside of the low-friction plate 325.

[0034] In this embodiment, after the hydraulic support 100 is lifted, the high friction plate 324 can be slid off or moved to a non-working position along the guide groove or limit track, so that the low friction plate 325 directly contacts the ground, significantly reducing the friction at the bottom of the support, which facilitates pushing or directional adjustment under heavy load. After the adjustment is completed, the high friction plate 324 is slid back to its original position to contact the ground, restoring the high friction support and locking state.

[0035] It should be noted that the high-friction plate 324 and the low-friction plate 325 are used to provide different bottom contact characteristics under the support and directional adjustment conditions of the hydraulic support 100. The high-friction plate 324 is preferably made of high-strength wear-resistant steel plate, alloy steel plate, or high-friction rubber lining with anti-slip serrations, polyurethane anti-slip pad, etc. Its surface can be processed with raised dots, serrations, or wear-resistant particle coatings to form a large coefficient of friction and reliable locking force with the ground during support.

[0036] The low-friction plate 325 is preferably made of wear-resistant, low-friction coefficient materials such as polytetrafluoroethylene, ultra-high molecular weight polyethylene, nylon, bronze alloy or steel-based composite sliding plate. Its surface can be smooth or coated with a solid lubricating layer to significantly reduce the friction at the bottom of the support during orientation and withstand working conditions such as coal dust and mud.

[0037] The bottom of the hydraulic support 100 has two limiting grooves 326, which are located on both sides of the low friction plate 325. Guide blocks 327 are fixedly installed on both sides of the high friction plate 324. The two guide blocks 327 are slidably connected to the two limiting grooves 326. Rubber plates 328 are fixedly installed inside the limiting grooves 326, and the two rubber plates 328 are located on the top of the two guide blocks 327.

[0038] In this embodiment, when the high friction plate 324 is in normal use, the two limiting grooves 326 and the guide block 327 form a stable sliding fit, which plays a reliable guiding and limiting role for the high friction plate 324 and prevents displacement during the support process. When the hydraulic support 100 is lifted to enter the adjustment working condition, the two rubber plates 328 lift the guide block 327 upward with their own elasticity, thereby pushing the high friction plate 324 out of the limiting groove 326. The operator can then slide or remove the high friction plate 324 so that the low friction plate 325 can directly contact the ground and quickly complete the switching between high and low friction surfaces.

[0039] Multiple friction strips 329 are fixedly installed on the bottom of the high friction plate 324, and the multiple friction strips 329 are evenly distributed.

[0040] In this embodiment, multiple friction strips 329 are arranged at equal intervals along the bottom surface of the high friction plate 324. Under support conditions, they can form multiple points of contact with the ground, significantly increasing the contact friction coefficient and anti-slip capability. At the same time, the strip distribution facilitates the discharge of coal dust and mud while maintaining high friction, reducing slippage and slag accumulation.

[0041] like Figure 2 , Figure 3 and Figure 5 As shown, the adjustment assembly 330 includes a rotating block 331 rotatably mounted on the bottom of the low friction plate 325. Two adjusting balls 332 are also rotatably mounted on the bottom of the low friction plate 325. The two adjusting balls 332 and the rotating block 331 are distributed in a triangular shape.

[0042] In this embodiment, the rotating block 331 and the two adjusting balls 332 are arranged in a three-point support manner. When the hydraulic support 100 switches to a low-friction state, they can jointly contact the ground to form a stable three-point support, so that the bottom of the support remains stable under heavy load. The rotating block 331 plays the main guiding and load-bearing role, and the adjusting balls 332 can roll with the ground when the support rotates or moves slightly, which greatly reduces frictional resistance and absorbs minor unevenness of the ground, preventing the support base from tilting or scraping the ground.

[0043] The rotating block 331 is set in a disc shape, and the two sides of the low friction plate 325 are set in an arc shape.

[0044] In this embodiment, the disc-shaped rotating block 331 is subjected to uniform force and rolls smoothly when in contact with the ground, which can provide stable guidance and support when the support is adjusted. The arc-shaped edges on both sides of the low-friction plate 325 can reduce the scraping and obstruction with the ground when the support undergoes angle fine adjustment or lateral movement, making the bottom force and friction smoother and more continuous.

[0045] Working principle: Under working face support conditions, the hydraulic support 100 is pressed against the top plate 200 by components such as the top plate 200 and columns. The high friction plate 324 at the bottom forms multi-point high friction contact with the ground through multiple friction strips 329, providing a stable locking force and preventing slippage. The limiting groove 326 and the guide block 327 cooperate to fix the position of the high friction plate 324, ensuring stable force. When it is necessary to adjust the direction or move the support, high pressure oil or gas is first injected into the sealing frame 321 by the high pressure pump 323, which pushes the sealing plate 322 and the support frame 310 to slide, so that the lower end of the support frame 310 is raised and the bottom of the support is temporarily suspended. At this time, the rubber plate 328 pushes the high friction plate 324 out of the limiting groove 326 by its elasticity. The operator can then slide or remove the high friction plate 324, so that the low friction plate 325 directly contacts the ground and exposes the rotating block 331 and the adjusting ball 332. The low-friction plate 325, rotating block 331, and adjusting ball 332 form a three-point support, maintaining stability even under heavy loads. The rotating block 331 provides primary guidance and load-bearing functions, while the adjusting ball 332 rolls with the ground as the support rotates or moves slightly, significantly reducing frictional resistance and absorbing uneven ground, preventing the base from tilting or scraping the ground. The operator can fine-tune the angle or position of the support using the adjusting component 330, allowing the support to quickly and accurately align to a new direction. After adjustment, the high-friction plate 324 is slid back into the limiting groove 326 and reset to its original position, releasing the pressure inside the sealing frame 321. The support frame 310 moves down, causing the high-friction plate 324 to contact the ground again, restoring the high-friction locking state, and the support re-enters a stable support condition. The entire process achieves rapid switching between support and adjustment states, making adjustment labor-saving and safe, and ensuring stable and reliable support.

[0046] It should be noted that the hydraulic supports and high-pressure pumps mentioned above are all components with relatively mature existing technologies. Specific models can be selected according to actual needs. At the same time, the hydraulic supports and high-pressure pumps can be powered by built-in power supplies or by mains power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic support auxiliary steering device, characterized in that, include: A hydraulic support (100) has a top plate (200) hinged to one side. An adjustment switching mechanism (300) for adjusting the frictional force at the bottom of the hydraulic support (100) is provided on the outside of the hydraulic support (100); The adjustment and switching mechanism (300) includes a support frame (310) disposed on the outside of the hydraulic support (100), a switching component (320) disposed on one side of the support frame (310), and an adjustment component (330) disposed on one side of the switching component (320).

2. The hydraulic support auxiliary steering device according to claim 1, characterized in that, The switching assembly (320) includes a sealing frame (321) fixedly installed on the outside of the hydraulic support (100), a support frame (310) slidably installed inside the sealing frame (321), and a sealing plate (322) fixedly installed on one side of the support frame (310) inside the sealing frame (321), and the sealing plate (322) is slidably connected to the inner wall of the sealing frame (321).

3. The hydraulic support auxiliary steering device according to claim 1, characterized in that, A high-pressure pump (323) is fixedly installed on one side of the hydraulic support (100). The output end of the high-pressure pump (323) is fixedly connected to the sealing frame (321). The output end of the high-pressure pump (323) is located on the top of the sealing plate (322).

4. The hydraulic support auxiliary steering device according to claim 1, characterized in that, The hydraulic support (100) is fixedly installed with a low friction plate (325) at its bottom. A high friction plate (324) is provided at the bottom of the low friction plate (325). The high friction plate (324) is sleeved on the outside of the low friction plate (325) and is located on the outside of the low friction plate (325).

5. The hydraulic support auxiliary steering device according to claim 4, characterized in that, The bottom of the hydraulic support (100) has two limiting grooves (326), which are located on both sides of the low friction plate (325). Guide blocks (327) are fixedly installed on both sides of the high friction plate (324). The two guide blocks (327) are slidably connected to the two limiting grooves (326). Rubber plates (328) are fixedly installed inside the limiting grooves (326), and the two rubber plates (328) are located on the top of the two guide blocks (327).

6. The hydraulic support auxiliary steering device according to claim 4, characterized in that, The bottom of the high friction plate (324) is fixedly equipped with a plurality of friction strips (329), and the plurality of friction strips (329) are equidistantly distributed.

7. The hydraulic support auxiliary steering device according to claim 1, characterized in that, The adjustment assembly (330) includes a rotating block (331) rotatably mounted on the bottom of a low friction plate (325), and two adjusting balls (332) are also rotatably mounted on the bottom of the low friction plate (325), the two adjusting balls (332) and the rotating block (331) being distributed in a triangular shape.

8. The hydraulic support auxiliary steering device according to claim 7, characterized in that, The rotating block (331) is configured as a disk shape, and the two sides of the low friction plate (325) are configured as arc shapes.

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