Coal mine underground mining device

Abstract

The utility model relates to the field of coal mine underground mining, and discloses a coal mine underground mining device which comprises a supporting seat, a plurality of hydraulic cylinders are fixedly installed at the center line position of the top end of the supporting seat, the movable end of each hydraulic cylinder is fixedly connected with a limiting block, and the top end of each hydraulic cylinder is provided with a sub-supporting frame. Connecting plates are fixedly connected to the inner walls of the sub-supporting frames in the horizontal direction, the bottom end of each connecting plate is fixedly connected with a limiting assembly, each limiting assembly is fixedly connected with the corresponding limiting block in an inserted mode, every two adjacent sub-supporting frames are in sliding contact, and material baffles are fixedly connected to the bottom ends of the two sides of each sub-supporting frame. According to the device, after the outer sides of the corresponding sub-supporting frames are damaged, targeted disassembly and replacement can be carried out conveniently, and overall replacement is not needed.

Description

Technical Field

[0001] This utility model relates to the field of underground coal mining, specifically to an underground coal mining device. Background Technology

[0002] Underground coal mining machines are one of the key pieces of equipment for realizing the mechanization and modernization of coal mine production. Mechanized coal mining can reduce physical labor, improve safety, and achieve the goals of high output, high efficiency, and low consumption. A coal mining machine is a large and complex system integrating mechanics, electrical systems, and hydraulic systems. It operates in harsh environments, and a malfunction can lead to the interruption of the entire coal mining operation, causing huge economic losses.

[0003] For example, the utility model disclosed in publication (announcement) number CN221879377U is a coal mine underground mining device. Because the connections between the propulsion cylinder and the connecting column are hinged, the outer swing arm can rotate flexibly, facilitating positioning and efficient cutting. Then, the drive motor on the inner side of the swing arm can be activated, its motor shaft driving the rotating shaft to rotate. The rotating shaft can then drive multiple sets of cutting blades welded to its outer wall to rotate, thereby achieving rapid cutting of the coal seam. The smoke and powder inside the powder injection tank, acting on the rock wall, are sprayed out from the outer nozzle along the pipeline, thus sealing the highly explosive coal seam and effectively reducing the probability of an explosion. On the other hand, to improve the support effect on the inner wall of the mine, this device can automatically activate the lifting cylinder inside the fixed seat. Its piston end pushes the push rod, which in turn pushes the adjusting column, allowing the support frame to move upwards smoothly and rest against the inner wall of the mine, thereby completing the support and sharing of the force, reducing the probability of a collapse.

[0004] The aforementioned utility model device is equipped with a support frame to enhance the support and stress resistance of the inner wall of the mine. However, the support frame is an integral structure. After long-term use, the surface of the support frame is damaged, requiring the replacement of the entire structure. It is not possible to disassemble and replace the damaged parts, which increases the cost of maintenance and replacement. In addition, the integral structure of the support frame is large in size and inconvenient to transport. Utility Model Content

[0005] The purpose of this utility model is to provide a coal mine underground mining device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal mine underground mining device, including a support base, a plurality of hydraulic cylinders are fixedly installed at the center position of the top of the support base, and a limit block is fixedly connected to the movable end of each hydraulic cylinder. A sub-support frame is provided at the top of each hydraulic cylinder, and a connecting plate is fixedly connected to the inner wall of the sub-support frame along the horizontal direction. A limit component is fixedly connected to the bottom end of each connecting plate, and each limit component is inserted and fixedly connected to the corresponding limit block. Adjacent sub-support frames are in sliding contact with each other, and baffle plates are fixedly connected to the bottom ends of both sides of each sub-support frame.

[0007] Preferably, each of the connecting plates is fixedly connected to the inner side of the sub-support frame on both sides, and each of the limiting components includes a bottom block fixedly connected to the bottom end of the connecting plate.

[0008] Preferably, each of the bottom blocks has a positioning groove at the center of its bottom end that matches the shape of the limiting block, and each bottom block has a rectangular through groove on both sides.

[0009] Preferably, an installation cylinder is fixedly connected to one end of the inner wall of the rectangular through groove of each of the bottom blocks, and a cover plate is fixedly connected to the end of each installation cylinder away from the bottom block.

[0010] Preferably, the inner wall of the mounting cylinder is slidably connected to a slider, and the slider is sleeved and fixed on the outside of the limiting rod.

[0011] Preferably, each of the limiting rods slides through the rectangular through-slot sidewall of the bottom block near one end and extends into the positioning slot, and each of the limiting blocks has a limiting slot on each side that engages with the limiting rod.

[0012] Preferably, each of the limiting rods has one end away from the bottom block that slides through the cover plate of the mounting cylinder and extends to the outside of the mounting cylinder. A spring is sleeved on the outside of the limiting rod on the side of the slider away from the positioning groove, and the two ends of the spring are fixedly connected to the end of the slider away from the positioning groove and the end of the cover plate of the mounting cylinder, respectively.

[0013] Preferably, each of the mounting cylinders has a strip-shaped through groove on both sides, and the outer side of the slider is fixedly connected to a side rod that is slidably connected to the inner wall of each strip-shaped through groove.

[0014] Preferably, each of the baffle plates has an L-shaped cross-section, and the two baffle plates are symmetrically arranged along both sides of the sub-support frame.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] This invention controls each hydraulic cylinder so that its movable end drives each limit block and the limit component fixedly connected to the limit block to move vertically, thereby enabling each sub-support frame to support the inner wall of the coal mine tunnel. At the same time, multiple hydraulic cylinders can be connected to the same controller to synchronously control the lifting process of each sub-support frame. The L-shaped baffles on both sides of each sub-support frame can reduce the falling of debris from the inner wall of the mine tunnel along the sides of the sub-support frame and prevent injury to construction workers. The overall structure of the existing technology is set as a combination of multiple sub-support frames, so when the corresponding sub-support frame is damaged, only the damaged sub-support frame needs to be disassembled and replaced or repaired, reducing costs and making operation more convenient.

[0017] Each sub-support frame has a bottom block fixedly connected to the bottom of the connecting plate fixedly connected to the inner wall. Each limiting block is positioned by inserting it into the positioning groove of the bottom block. At the same time, by moving each side rod away from the positioning groove, the side rod slides along the strip through groove, thereby moving each slider away from the positioning groove and compressing the spring. Then, after the limiting block is inserted into the positioning groove, when the limiting rod is aligned with the limiting slot of the limiting block, the spring force causes each limiting rod to insert into the limiting slot and fix the limiting block. Thus, each limiting block is fixedly connected to the connecting plate through the limiting assembly, which facilitates the removal of the connecting plate for replacement of the connecting plate and the sub-support frame. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting cylinder structure of this utility model;

[0021] Figure 4 This is a side view of the sub-support frame of this utility model.

[0022] In the diagram: 1. Support base; 2. Hydraulic cylinder; 3. Limiting block; 4. Sub-support frame; 5. Connecting plate; 6. Limiting assembly; 7. Baffle plate; 301. Limiting slot; 61. Bottom block; 62. Positioning groove; 63. Mounting cylinder; 64. Slider; 65. Side rod; 66. Limiting insert rod; 631. Strip through groove. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please see Figures 1-4 The diagram shows an underground coal mining device, including a support base 1. Several hydraulic cylinders 2 are fixedly installed at the center of the top of the support base 1, and each hydraulic cylinder 2 is fixedly connected to a limit block 3 at its movable end. Each hydraulic cylinder 2 is provided with a sub-support frame 4 at its top, and a connecting plate 5 is fixedly connected to the inner wall of the sub-support frame 4 in the horizontal direction. Each connecting plate 5 is fixedly connected to the bottom end of its bottom end, and each limit component 6 is inserted and fixed to the corresponding limit block 3. Adjacent sub-support frames 4 are in sliding contact with each other, and baffle plates 7 are fixedly connected to the bottom ends of both sides of each sub-support frame 4.

[0026] In this embodiment, each connecting plate 5 is fixedly connected to the inner side of the sub-support frame 4 on both sides, and each limiting component 6 includes a bottom block 61 fixedly connected to the bottom end of the connecting plate 5. Each bottom block 61 has a positioning groove 62 at the center of its bottom end that matches the shape of the limiting block 3. Each bottom block 61 has a rectangular through groove on both sides. An installation cylinder 63 is fixedly connected to one end of the inner wall of the rectangular through groove of each bottom block 61, and a cover plate is fixedly connected to the end of each installation cylinder 63 away from the bottom block 61. A slider 64 is slidably connected to the inner wall of the installation cylinder 63, and the slider 64 is sleeved and fixed to the outside of the limiting rod 66. The end of each limiting rod 66 near the bottom block 61 slides through the side wall of the rectangular through groove of the bottom block 61 and extends into the positioning groove 62. Each limiting block 3 has a limiting slot 301 on both sides that engages with the limiting rod 66. The end of each limiting rod 66 away from the bottom block 61 slides through the cover plate of the mounting cylinder 63 and extends to the outside of the mounting cylinder 63. A spring is sleeved on the outside of the limiting rod 66 on the side of the slider 64 away from the positioning groove 62, and the two ends of the spring are fixedly connected to the end of the slider 64 away from the positioning groove 62 and the end of the cover plate of the mounting cylinder 63, respectively. Each mounting cylinder 63 has a strip-shaped through groove 631 on both sides, and the outside of the slider 64 is fixedly connected to a side rod 65 that slides through the inner wall of each strip-shaped through groove 631. Each baffle plate 7 has an L-shaped cross-section, and the two baffle plates 7 are symmetrically arranged on both sides of the sub-support frame 4.

[0027] Furthermore, each hydraulic cylinder 2 is controlled so that its moving end drives each limit block 3 and the limit component 6 fixedly connected to the limit block 3 to move vertically, thereby enabling each sub-support frame 4 to support the inner wall of the coal mine tunnel. At the same time, multiple hydraulic cylinders 2 can be connected to the same controller to synchronously control the lifting process of each sub-support frame 4. The L-shaped baffles 7 set on both sides of each sub-support frame 4 can reduce the falling of debris along the sides of the sub-support frame 4 from injuring construction workers. The overall structure of the existing technology is set as a combination of multiple sub-support frames 4. Therefore, when a corresponding sub-support frame 4 is damaged, it can be removed and replaced or repaired, reducing costs and making the operation more convenient.

[0028] Each sub-support frame 4 has a bottom block 61 fixedly connected to the bottom end of the connecting plate 5, which is fixedly connected to the inner wall of the sub-support frame 4. Each limiting block 3 is inserted into the positioning groove 62 of the bottom block 61 for positioning. At the same time, by moving each side rod 65 away from the positioning groove 62, the side rod 65 slides along the strip through groove 631, thereby driving each slider 64 to move away from the positioning groove 62 and compressing the spring. Then, after the limiting block 3 is inserted into the positioning groove 62, when the limiting rod 66 is aligned with the limiting slot 301 of the limiting block 3, the spring force causes each limiting rod 66 to be inserted into the limiting slot 301 to fix the limiting block 3. Thus, each limiting block 3 is fixedly connected to the connecting plate 5 through the limiting assembly 6, which makes it easy to remove the connecting plate 5 for replacement of the connecting plate 5 and the sub-support frame 4.

[0029] The working principle of this invention is as follows: Each hydraulic cylinder 2 is controlled so that its movable end drives each limiting block 3 and the limiting component 6 fixedly connected to the limiting block 3 to move vertically. This allows each sub-support frame 4 to support the inner wall of the coal mine tunnel. Simultaneously, multiple hydraulic cylinders 2 can be connected to the same controller to synchronously control the lifting and lowering process of each sub-support frame 4. The L-shaped baffles 7 on both sides of each sub-support frame 4 reduce the risk of falling debris from the mine tunnel walls and injuring workers. By modifying the existing overall structure into a combination of multiple sub-support frames 4, when a corresponding sub-support frame 4 is damaged, it can be removed and replaced or repaired directly, reducing costs and making operation more convenient. Each sub-support frame 4 has a bottom block 61 fixedly connected to the bottom end of the connecting plate 5 fixedly connected to the inner wall. Each limiting block 3 is inserted into the positioning groove 62 of the bottom block 61 for positioning. At the same time, by moving each side rod 65 away from the positioning groove 62, the side rod 65 slides along the strip through groove 631, thereby driving each slider 64 to move away from the positioning groove 62 and compressing the spring. Then, after the limiting block 3 is inserted into the positioning groove 62, when the limiting rod 66 is aligned with the limiting slot 301 of the limiting block 3, the spring force causes each limiting rod 66 to insert into the limiting slot 301 to fix the limiting block 3. Thus, each limiting block 3 is fixedly connected to the connecting plate 5 through the limiting assembly 6, which facilitates the removal of the connecting plate 5 for replacement of the connecting plate 5 and the sub-support frame 4.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine underground mining device, comprising a support base (1), characterized in that: Several hydraulic cylinders (2) are fixedly installed at the center of the top of the support base (1), and each hydraulic cylinder (2) is fixedly connected to a limit block (3) at its movable end. Each hydraulic cylinder (2) is provided with a sub-support frame (4) at its top, and a connecting plate (5) is fixedly connected to the inner wall of the sub-support frame (4) in the horizontal direction. Each connecting plate (5) is fixedly connected to a limit component (6) at its bottom end, and each limit component (6) is inserted and fixed to the corresponding limit block (3). Two adjacent sub-support frames (4) slide in contact, and each sub-support frame (4) is fixedly connected to a baffle plate (7) at the bottom of both sides.

2. The coal mine underground mining device according to claim 1, characterized in that: Each of the connecting plates (5) is fixedly connected to the inner side of the sub-support frame (4) on both sides, and each of the limiting components (6) includes a bottom block (61) fixedly connected to the bottom end of the connecting plate (5).

3. The underground coal mining device according to claim 2, characterized in that: Each of the bottom blocks (61) has a positioning groove (62) at the center of its bottom end that is adapted to the shape of the limiting block (3), and each bottom block (61) has a rectangular through groove on both sides.

4. The underground coal mining device according to claim 3, characterized in that: Each of the bottom blocks (61) has a mounting cylinder (63) fixedly connected to one end of the inner wall of the rectangular through groove, and a cover plate is fixedly connected to the end of each mounting cylinder (63) away from the bottom block (61).

5. A coal mine underground mining device according to claim 4, characterized in that: The inner wall of the mounting cylinder (63) is slidably connected to a slider (64), and the slider (64) is sleeved and fixed on the outside of the limiting rod (66).

6. A coal mine underground mining device according to claim 5, characterized in that: Each of the limiting rods (66) slides through the rectangular through-slot sidewall of the bottom block (61) and extends into the positioning groove (62) at one end near the bottom block (61). Each of the limiting blocks (3) has a limiting slot (301) on both sides that is engaged with the limiting rod (66).

7. A coal mine underground mining device according to claim 6, characterized in that: Each of the limiting rods (66) has one end away from the bottom block (61) that slides through the cover plate of the mounting cylinder (63) and extends to the outside of the mounting cylinder (63). The limiting rod (66) is fitted with a spring on the outside of the slider (64) on the side away from the positioning groove (62), and the two ends of the spring are fixedly connected to the end of the slider (64) away from the positioning groove (62) and the end of the cover plate of the mounting cylinder (63), respectively.

8. A coal mine underground mining device according to claim 7, characterized in that: Each of the mounting cylinders (63) has a strip-shaped through groove (631) through both sides, and the slider (64) is fixedly connected to a side rod (65) that is slidably connected to the inner wall of each strip-shaped through groove (631).

9. A coal mine underground mining device according to claim 8, characterized in that: Each of the baffle plates (7) has an L-shaped cross section, and the two baffle plates (7) are symmetrically arranged on both sides of the sub-support frame (4).

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