Supporting device for coal mining by filling

Abstract

This utility model relates to the field of coal mining support technology, specifically to a filling coal mining support device. It includes a support mechanism fixedly connected to the telescopic beam. The support mechanism includes a connecting block, the top of which is fixedly connected to the bottom surface of the telescopic beam. A hydraulic cylinder is located below the connecting block, and a U-shaped block is fixedly connected to the movable end of the hydraulic cylinder. The connecting block is rotatably connected between the two arms of the U-shaped block. In this utility model, the hydraulic cylinder is made perpendicular to the ground by rotating the U-shaped block. Then, a pin is inserted into an adjacent hole to fix the position of the hydraulic cylinder. The movable end of the hydraulic cylinder is then extended, pressing the base plate against the ground, thus providing additional support for the telescopic beam. When the telescopic beam moves, the movable end of the hydraulic cylinder can be retracted, causing the moving wheel to push the hydraulic cylinder upward under the action of an adjacent rebound spring, providing a certain upward force to the telescopic beam and thus improving the stability of the telescopic beam 200 during movement.

Description

Technical Field

[0001] This utility model relates to the field of coal mining support technology, specifically to filling coal mining support equipment. Background Technology

[0002] Backfilling coal mining support typically utilizes mining hydraulic supports. These supports consist of hydraulic cylinders (such as columns and jacks), load-bearing structural components (such as top beams, shield beams, and bases), pushing devices, and control systems. They primarily rely on the top beams to support the roof. Some hydraulic supports also incorporate telescopic beams within the top beam. These telescopic beams are usually designed to fit inside the top beam and their extension / retraction is controlled by hydraulic cylinders (telescopic jacks). The extension / retraction of the telescopic beam increases the support range of the top beam, especially under conditions of high roof pressure or poor roof conditions, providing better roof support. However, conventional telescopic beams experience increased bending stress after extending a certain length, and due to their distance from the base and lack of bottom support, fatigue damage may occur, causing inconvenience. Furthermore, in some applications, the telescopic beam may be subjected to roof pressure during extension / retraction, affecting its stability and adding further inconvenience. Utility Model Content

[0003] The purpose of this invention is to provide a backfilling coal mining support device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A coal filling and mining support system, including a hydraulic support, wherein the hydraulic support is movably connected to a telescopic beam, comprising:

[0006] A support mechanism that provides additional support for the telescopic beam and a moving mechanism that facilitates the movement of the support mechanism with the telescopic beam. The support mechanism is fixedly connected to the telescopic beam. The support mechanism includes a connecting block, and the top of the connecting block is fixedly connected to the bottom surface of the telescopic beam. A hydraulic cylinder is provided below the connecting block, and a U-shaped block is fixedly connected to the movable end of the hydraulic cylinder. The connecting block is rotatably connected between the two arms of the U-shaped block, and the moving mechanism is fixedly connected to the bottom of the hydraulic cylinder.

[0007] Furthermore, the U-shaped block is fixedly connected to internal threaded cylinders on both sides, and a pin is slidably sleeved inside each internal threaded cylinder. The bottom surface of the telescopic beam has two insertion holes, and the two pins are respectively movably inserted into the two insertion holes.

[0008] Furthermore, the moving mechanism includes:

[0009] The system includes a base plate, four L-shaped plates, four sliding cylinders, and multiple moving wheels that assist the base plate and hydraulic cylinder in moving synchronously with the telescopic beam. The base plate is fixedly connected to the bottom end of the hydraulic cylinder. One end of the short arm of each of the four L-shaped plates is fixedly connected to the four corners of the base plate. Each long arm of each L-shaped plate has a slot. One end of each of the four sliding cylinders is fixedly connected to a slider, and the four sliders are slidably engaged in the four slots. A rotating shaft is rotatably connected between two sliding cylinders located on the same long side of the base plate. A return spring is fixedly connected between each sliding cylinder and the top of the adjacent L-shaped plate. The multiple moving wheels are fixedly sleeved on the outer wall of the adjacent rotating shaft.

[0010] Furthermore, each sliding cylinder has a guide rod fixedly connected to its top surface, each L-shaped plate has a sleeve hole at its top, and each guide rod is slidably sleeved inside the adjacent sleeve hole.

[0011] Furthermore, the bottom surface of the base plate is fixedly connected with multiple protrusions.

[0012] Furthermore, threads are provided at both ends of the outer wall of each pin.

[0013] Furthermore, a handle is fixedly connected to the bottom end of each pin.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By rotating the U-shaped block to make the hydraulic cylinder perpendicular to the ground, and then screwing the pin into the adjacent internal threaded cylinder and inserting it into the adjacent insertion hole, the position of the hydraulic cylinder is fixed. Then, the movable end of the hydraulic cylinder is activated to extend, and the base plate is pressed against the ground, so that the hydraulic cylinder provides additional support for the telescopic beam. When the telescopic beam moves, the movable end of the hydraulic cylinder can be activated to retract, so that the moving wheel, driven by the adjacent rebound spring, pushes the hydraulic cylinder upward, providing a certain upward force for the telescopic beam, offsetting part of the pressure, thereby improving the stability of the telescopic beam when it moves. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram showing the positional relationship between the support mechanism and the moving mechanism in this utility model;

[0018] Figure 3 This is a schematic diagram of the moving mechanism structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the mobile mechanism in use in this utility model.

[0020] In the diagram: 100, hydraulic support; 200, telescopic beam; 300, support mechanism; 310, connecting block; 320, hydraulic cylinder; 330, U-shaped block; 340, internal threaded cylinder; 341, pin; 400, moving mechanism; 410, base plate; 411, protrusion; 420, L-shaped plate; 430, sliding cylinder; 431, rebound spring; 432, guide rod; 440, moving wheel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 In this embodiment of the utility model, the filling coal mining support equipment includes a hydraulic support 100, and the hydraulic support 100 is movably connected to a telescopic beam 200. It includes a support mechanism 300 that can provide additional support for the telescopic beam 200 and a moving mechanism 400 that can facilitate the movement of the support mechanism 300 with the telescopic beam 200. The support mechanism 300 is fixedly connected to the telescopic beam 200. The support mechanism 300 includes a connecting block 310, and the top of the connecting block 310 is fixedly connected to the bottom surface of the telescopic beam 200. A hydraulic cylinder 320 is provided below the connecting block 310, and a U-shaped block 330 is fixedly connected to the movable end of the hydraulic cylinder 320. The connecting block 310 is rotatably connected between the two arms of the U-shaped block 330. The moving mechanism 400 is fixedly connected to the bottom of the hydraulic cylinder 320.

[0023] Specifically, the hydraulic support 100 is an existing coal mine hydraulic support 100. The telescopic beam 200 is located at the top beam and its movement is controlled by a hydraulic push rod. When the telescopic beam 200 is in use, the hydraulic cylinder 320 is rotated to make it perpendicular to the ground, and then the hydraulic cylinder 320 is activated until it touches the ground, so that the hydraulic cylinder 320 supports the telescopic beam 200 between the telescopic beam 200 and the ground, providing additional support for the telescopic beam 200 in the extended state, thereby improving the pressure-bearing capacity of the telescopic beam 200. When the hydraulic support 100 is being stored, the hydraulic cylinder 320 can be rotated to make it parallel to the telescopic beam 200, and the movable end of the hydraulic cylinder 320 can be controlled to retract to reduce the overall length of the hydraulic cylinder 320, so that the hydraulic cylinder 320 can be placed on the base of the hydraulic support 100, thus making the hydraulic cylinder 320 easy to store and easy for users to use. The hydraulic cylinder 320 is a hydraulic jack, which is existing technology and will not be described in detail here. Example 1

[0024] like Figure 1-2 As shown, in this embodiment, the U-shaped block 330 is fixedly connected to internal threaded cylinders 340 on both sides. Each internal threaded cylinder 340 is slidably sleeved with a pin 341. The bottom surface of the telescopic beam 200 has two insertion holes, and the two pins 341 are respectively movably inserted into the two insertion holes.

[0025] In this embodiment, when the hydraulic cylinder 320 is supported between the telescopic beam 200 and the ground, the relative angle between the U-shaped block 330 and the connecting block 310 can be fixed by sliding two pins 341 into the insertion hole, thereby fixing the position of the hydraulic cylinder 320 and reducing the possibility of the hydraulic cylinder 320 tilting.

[0026] like Figure 3-4 As shown, in this embodiment, the moving mechanism 400 includes:

[0027] The system includes a base plate 410, four L-shaped plates 420, four sliding cylinders 430, and multiple casters 440 that assist the base plate 410 and hydraulic cylinders 320 in moving synchronously with the telescopic beam 200. The base plate 410 is fixedly connected to the bottom end of the hydraulic cylinders 320. One end of the short arm of each of the four L-shaped plates 420 is fixedly connected to the four corners of the base plate 410. Each long arm of any L-shaped plate 420 has a slot. One end of each of the four sliding cylinders 430 is fixedly connected to a slider, and the four sliders are respectively slidably engaged in the four slots. A rotating shaft is rotatably connected between two sliding cylinders 430 on the same long side of the base plate 410. A spring 431 is fixedly connected between each sliding cylinder 430 and the top of the adjacent L-shaped plate 420. Multiple moving wheels 440 are fixedly sleeved with the outer wall of the adjacent rotating shaft. A guide rod 432 is fixedly connected to the top surface of each sliding cylinder 430. A sleeve hole is opened at the top of each L-shaped plate 420. Each guide rod 432 is slidably sleeved inside the adjacent sleeve hole. Multiple protrusions 411 are fixedly connected to the bottom surface of the base plate 410.

[0028] In practical implementation, during the use of hydraulic cylinder 320, when the telescopic beam 200 moves, the movable end of hydraulic cylinder 320 can be retracted, thereby lifting the base plate 410 off the ground. Then, the sliding cylinder 430 naturally moves downwards due to the restoring force of the adjacent return spring 431, causing the moving wheels 440 on the two rotating shafts to contact the ground. As the telescopic beam 200 moves, it drives hydraulic cylinder 320 to move on the ground via pin 341 and connecting block 310, relying on the moving wheels 440. The moving wheels 440 on the rotating shafts can be detached and reattached, and the number of moving wheels 440 can be increased or decreased as needed, allowing the moving wheels 440 to support and roll on the ground. Hydraulic cylinder 320 moves via the moving wheels 440. The spring force of the rebound spring 431 provides an upward force to the telescopic beam 200, offsetting some of the pressure on the telescopic beam 200, thereby providing a certain auxiliary support for the moving telescopic beam 200 and improving its stability. After the telescopic beam 200 stops moving, the movable end of the hydraulic cylinder 320 can be extended, thereby pressing the base plate 410 against the ground and causing the ground to press the moving wheel 440, the rotating shaft and the sliding cylinder 430 upward, so that the protrusion 411 on the base plate 410 pierces the ground, making it difficult for the base plate 410 to slide on the ground. The guide rod 432 can further restrict the sliding direction of the adjacent sliding cylinder 430, and the slider on the auxiliary sliding cylinder 430 guides the movement direction of the sliding cylinder 430. Example 2

[0029] Based on Embodiment 1, the pin 341 is secured by creating threads on the pin 341.

[0030] like Figure 1-2 As shown, in this embodiment, threads are provided at both ends of the outer side wall of any pin 341, and a handle is fixedly connected to the bottom end of any pin 341.

[0031] In practice, the handle allows the user to easily hold the pin 341. The thread on the pin 341 can be screwed into the internal thread of the adjacent internal threaded cylinder 340. When the top of the pin 341 is inserted into the adjacent insertion hole, the bottom thread of the pin 341 can be screwed into the interior of the adjacent internal threaded cylinder 340 to fix the pin 341. When the pin 341 is disengaged from the adjacent insertion hole, the top thread of the pin 341 is in contact with the internal thread of the adjacent internal threaded cylinder 340, making it difficult for the pin 341 to fall out of the interior of the adjacent internal threaded cylinder 340, which is convenient for the user.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coal filling support device, comprising a hydraulic support (100), wherein the hydraulic support (100) is movably connected to a telescopic beam (200), characterized in that, include: A support mechanism (300) is fixedly connected to the telescopic beam (200). The support mechanism (300) includes a connecting block (310), and the top of the connecting block (310) is fixedly connected to the bottom surface of the telescopic beam (200). A hydraulic cylinder (320) is provided below the connecting block (310), and a U-shaped block (330) is fixedly connected to the movable end of the hydraulic cylinder (320). The connecting block (310) is rotatably connected between the two arms of the U-shaped block (330). The moving mechanism (400) is fixedly connected to the bottom of the hydraulic cylinder (320).

2. The filling coal mining support equipment according to claim 1, characterized in that, The U-shaped block (330) is fixedly connected to internal threaded cylinders (340) on both sides. Each internal threaded cylinder (340) is slidably sleeved with a pin (341). The bottom surface of the telescopic beam (200) has two insertion holes, and the two pins (341) are movably inserted into the two insertion holes respectively.

3. The filling coal mining support equipment according to claim 2, characterized in that, Threads are provided at both ends of the outer side wall of any pin (341).

4. The filling coal mining support equipment according to claim 3, characterized in that, A handle is fixedly connected to the bottom end of any pin (341).

5. The filling coal mining support equipment according to any one of claims 1-4, characterized in that, The moving mechanism (400) includes: The base plate (410) is fixedly connected to the bottom end of the hydraulic cylinder (320); Four L-shaped plates (420) are fixedly connected at one end of their short arms to the four corners of the base plate (410), and each L-shaped plate (420) has a slot on its long arm. Four sliding cylinders (430) are fixedly connected to one end of each slider, and the four sliders are respectively slidably engaged in the four slots. A rotating shaft is rotatably connected between two sliding cylinders (430) located on the same long side of the base plate (410). A spring (431) is fixedly connected between any sliding cylinder (430) and the top of the adjacent L-shaped plate (420). Multiple movable wheels (440) are fixedly sleeved to the outer wall of the adjacent rotating shaft.

6. The filling coal mining support equipment according to claim 5, characterized in that, Each sliding cylinder (430) has a guide rod (432) fixedly connected to its top surface, and each L-shaped plate (420) has a sleeve hole at its top. Each guide rod (432) is slidably sleeved inside the adjacent sleeve hole.

7. The filling coal mining support equipment according to claim 5, characterized in that, The bottom surface of the base plate (410) is fixedly connected with multiple protrusions (411).

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