Hydraulic support disassembly equipment for thin coal seams in underground coal mines

Abstract

The invention discloses a hydraulic support disassembly equipment for thin coal seams in underground coal mines, comprising a mounting seat, a fixing structure for fixing the mounting seat on a hydraulic support base, a traction platform placed on the mounting seat, and traction structures placed on both sides of the traction platform, wherein the traction structure comprises a reversing wheel placed on the mounting seat, a telescopic traction structure and a vertical guide groove respectively arranged on both sides of the reversing wheel, and a traction rope connected to the telescopic traction structure and reversing the reversing wheel to pull and push the jack ear shaft. The disassembly time can be greatly shortened, and the disassembly time can be shortened to a few minutes, and is not limited by the narrow space of thin coal seam mining, and has a simple structure, is safe and reliable, and saves time and labor.

Description

Technical Field

[0001] This invention relates to the field of coal mining machinery and equipment, and more specifically to a hydraulic support dismantling device for thin coal seams in underground coal mines. Background Art

[0002] Mechanization in thin coal seams, due to limited space, significantly impacts equipment performance and maintenance space, especially the maintenance and replacement of the jacks used in the support system. The jacks are the main components that power the moving device, propelling the working face forward; any damage requires immediate replacement, otherwise the entire longwall mining face will be paralyzed. Because of the limited space, the jacks used in thin coal seam supports should not be too large. To increase the pulling force on the support, an inverted structure is generally used, with the jack cylinder bottom facing forward.

[0003] In the mining of medium-thick coal seams, due to the large working space, the replacement of the moving jack involves suspending two manual hoists, one in front and one behind, on the top beam of the support. First, the moving jack is raised, and then the other hoist is used to pull it forward to remove it. However, in the mining of thin coal seams, there is no space to suspend manual hoists. One approach is to manually dig a pit under the base to remove the moving jack from below, which is very time-consuming and labor-intensive. Another approach is to not use moving jacks at all, but instead use single-pillar supports to push the conveyor and move the support frame. While this solves the immediate problem, it is very detrimental to high production and efficiency, and seriously affects the speed of face advancement. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a hydraulic support dismantling device for thin coal seams in underground coal mines.

[0005] This invention is achieved through the following technical solution:

[0006] The dismantling equipment for hydraulic supports in thin coal seams underground includes a mounting base, a fixing structure for fixing the mounting base to the hydraulic support base, a traction platform placed on the mounting base, and traction structures placed on both sides of the traction platform. The traction structure includes a reversing wheel placed on the mounting base, telescopic traction structures and vertical guide grooves respectively arranged on both sides of the reversing wheel, and a traction rope connected to the telescopic traction structure and reversed by the reversing wheel to traction and push the jack trunnion.

[0007] Using this device, when the push jack is retracted to its minimum stroke, the telescopic traction structure is also in its shortest stroke state. The mounting base is fixed to the hydraulic support base using a fixing structure. At this time, the vertical guide groove on the mounting base corresponds to the trunnion of the push jack, that is, the trunnion of the push jack is placed in the vertical guide groove. One end of the traction rope is looped on the trunnion of the push jack, and the other end is fixed to the telescopic end of the telescopic traction structure. When the telescopic traction structure extends, under the traction of the traction rope, the trunnion of the push jack moves upward along the vertical guide groove, then disengages from the guide groove and is placed on the traction platform. The traction rope disengages from the reversing wheel, and one end of the trunnion of the push jack is completely placed on one side of the telescopic traction structure. At this time, the push jack is disengaged from the push device, and the telescopic traction structure continues to extend, pulling the push jack on the traction platform to the end away from the vertical guide groove until the push jack is completely removed. This device significantly reduces dismantling time, down to just a few minutes, and is not limited by the confined space of thin coal seam mining. It features a simple structure, safety, reliability, and saves time and labor. Its small size makes it suitable for use in narrow underground spaces.

[0008] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0009] 1. This invention can greatly shorten the dismantling time, reducing it to just a few minutes. It is not limited by the small space required for mining thin coal seams. It has a simple structure, is safe and reliable, and saves time and effort. Attached Figure Description

[0010] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, are not intended to limit the embodiments of the present invention.

[0011] Figure 1 This is a schematic diagram of the initial state of use of the present invention.

[0012] Figure 2 for Figure 1 Top view.

[0013] Figure 3 for Figure 1 Side view.

[0014] Figure 4 This is a schematic diagram of the structure of the jack.

[0015] Figure 5 This is a schematic diagram of one usage state of the present invention.

[0016] Figure 6 This is a schematic diagram of one usage state of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example 1

[0019] like Figure 1 The dismantling equipment for a thin coal seam hydraulic support in a coal mine, as shown, includes a mounting base 1, a traction platform 12 mounted on the mounting base 1, and two pairs of traction structures. The two pairs of traction structures are symmetrically arranged on both sides of the traction platform to maintain the synchronicity of the traction of the pushing jack 9. During installation, the mounting base is fixed to the hydraulic support base 10 via a fixing structure 7. To facilitate dismantling and reuse by multiple devices, the fixing structure 7 can be detachable using a fixing pin or other detachable fixing structure. Specifically, the traction structure includes a reversing wheel 3, a telescopic traction structure 2, a vertical guide groove 11, and a traction rope. The reversing wheel 3, fixed to the mounting base, changes the traction direction of the traction rope. Its height is higher than the traction platform 12 to ensure that one end of the trunnion of the pushing jack 9 can be smoothly pulled onto the traction platform. One end of the traction rope is connected to the telescopic end of the telescopic traction structure 2, and the other end is connected to the trunnion of the pushing jack 9. For ease of operation, the traction rope can be detachable using a fixing pin or other detachable fixing structure. Figure 1 The structure shown is that a collar structure is used to fit onto the trunnion of the push jack 9; the telescopic traction structure 2 and the vertical guide groove 11 are respectively placed on both sides of the reversing wheel 3.

[0020] Example 2

[0021] Based on the structure and principles of the above embodiments, this embodiment discloses a specific implementation method.

[0022] like Figure 1 , 2 As shown in Figure 3, a conveyor wheel 4 is installed on the traction platform 12. The shaft of the conveyor wheel 4 is parallel to the shafts of the two reversing wheels 3 so that the rotation direction of the conveyor wheel is consistent with the movement direction of the pushing jack 9, thereby protecting the pushing jack 9. Specifically, the traction rope includes a wire rope 5 and a rope clamp 6, such as... Figure 2 As shown, the telescopic traction structure 2 can be implemented using a jack or cylinder, etc. A hole is provided at the telescopic end of the telescopic traction structure 2. Using this structure, when disassembling or moving the jack, simply pass the wire rope 5 through the hole at the telescopic end of the telescopic traction structure 2, then wrap it around the trunnion of the moving jack 9, and finally secure both ends with rope clamps 6, making operation convenient. For ease of transportation and storage, a detachable connection structure can also be used between the telescopic traction structure 2 and the mounting base 1, for example, using a fixing pin 8 for connection and fixation.

[0023] The operating principle will now be explained using the structure of this embodiment:

[0024] When it is necessary to disassemble and move the jack, the jack should be retracted to its minimum stroke, i.e., point C. The mounting base should then be fixed to the hydraulic support base using a fixing structure. The telescopic traction structure should also be in its shortest stroke state. Figure 1 As shown, the wire rope 5 is passed through the hole at the telescopic end of the telescopic traction structure 2 and then wrapped around the trunnion of the push jack 9. Both ends are fixed by rope clamps 6. The telescopic traction structure 2 extends, and under the traction of the traction rope, the trunnion of the push jack moves upward along the vertical guide groove, then disengages from the guide groove and is placed on the traction platform. The traction rope disengages from the reversing wheel, and one end of the push jack trunnion is completely placed on one side of the telescopic traction structure, i.e., point D. Figure 5 As shown, at this point, the jack is disengaged from the jacking device 13, the telescopic traction structure 2 is disassembled and shortened to its shortest stroke, the wire rope 5 is re-wound using the rope clamp 6 to reduce the elongation of the telescopic traction structure 2, and then the telescopic traction structure 2 is extended to pull the jack to move away from the vertical guide groove on the traction platform until the jack is completely removed. Figure 6 The state shown. The movement trajectory of the jack 9 is as follows. Figure 6 As shown in Figure A, this device significantly reduces dismantling time, down to just a few minutes, and is not limited by the confined space in thin coal seam mining. It features a simple structure, safety, reliability, and saves time and labor. During operation, the length of the rope clamp 6 can be adjusted multiple times during the telescopic traction structure 2 to re-extend the length of the telescopic traction structure 2, reducing the requirements for underground space. The device is compact, easy to install and operate underground, and significantly reduces dismantling time.

[0025] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. Hydraulic support disassembly equipment for thin coal seams in underground coal mines, characterized in that: The invention comprises a mounting seat (1), a fixing structure (7) for fixing the mounting seat (1) on a hydraulic support base (10), a traction platform (12) disposed on the mounting seat (1), and traction structures disposed on both sides of the traction platform (12), the traction structure comprising a reversing wheel (3) disposed on the mounting seat (1), a telescopic traction structure (2) and a vertical guide groove (11) disposed on both sides of the reversing wheel (3), a traction rope connected to the telescopic traction structure (2) and reversing through the reversing wheel (3) to pull the ear shaft of the push jack (9), the traction rope comprising a steel wire rope (5) and a rope clamp (6) for fixing the end of the steel wire rope (5) so that the steel wire rope forms a ring shape, and a conveying wheel (4) is disposed on the traction platform (12), the axis of the conveying wheel (4) being disposed parallel to the axes of the two reversing wheels (3).

2. The hydraulic support disassembly equipment for thin coal seams in underground coal mines according to claim 1 is characterized in that: The fixing structure (7) is a detachable fixing structure.

3. The hydraulic support disassembly equipment for thin coal seams in underground coal mines according to claim 1 is characterized in that: A detachable connection structure is adopted between the telescopic traction structure (2) and the mounting seat (1).

Images