Three-telescopic stand column for ultra-thin coal seam support

Abstract

The utility model discloses a three-telescopic stand column for an ultra-thin coal seam support, which comprises a bottom plate, one side face of the bottom plate is connected with a support assembly, one side face of the support assembly is connected with a three-telescopic stand column assembly, and the three-telescopic stand column assembly comprises two groups of fixing blocks. An upper fixing base is hinged to one side face of each set of fixing blocks through a first pin shaft, and an inner fixing screw hole is formed in one side face of each upper fixing base. According to the device, an internal fixing screw hole is matched with an external thread connecting rod, an external thread connecting column is matched with an internal positioning screw hole, the three-telescopic-column assembly can be conveniently and rapidly mounted and dismounted, a limiting screw hole is matched with a limiting screw, the external thread connecting rod and the external thread connecting column can be conveniently limited, and the device is convenient to use. In addition, in combination with the supporting capacity of the support assembly and the use of a first pin shaft, a fourth pin shaft and a fifth pin shaft, the height of the top plate can be conveniently adjusted, and the functionality of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of ultra-thin coal seam mining equipment, and in particular to a three-telescopic column for ultra-thin coal seam support. Background Technology

[0002] Currently, the issue of efficient mining of extremely thin coal seams is receiving increasing attention and has been placed on the agenda. The mechanization level of mining of extremely thin coal seams is still relatively low, and most of the mining still adopts high-grade conventional mining, that is, using drum mining machines to drop and load coal, and single hydraulic props to support the roof. Roof control at the working face is relatively difficult, and the working face requires a large number of people, the working environment of the workers is harsh, the safety guarantee is poor, and the production capacity is difficult to be fully utilized. For a long time, as a thin coal seam mining machine, the mining space is extremely narrow due to the limitations of its own structure, and maintenance and operation are inconvenient.

[0003] Chinese patent CN222045809U discloses a three-telescopic column for an ultra-thin coal seam support, comprising a primary cylinder, a secondary cylinder, and a tertiary cylinder. The primary cylinder and the secondary cylinder are internally slidably connected, and the primary and secondary cylinders move up and down. Similarly, the secondary cylinder and the tertiary cylinder are internally slidably connected, and the primary and secondary cylinders move up and down. The secondary cylinder is installed inside the primary cylinder, and the tertiary cylinder is installed inside the secondary cylinder. A small... The piston column, the first-stage cylinder, the second-stage cylinder, the third-stage cylinder, and the small piston column are all equipped with lace-shaped static sealing rings, guide rings, and dustproof rings on the annular surfaces at both ends. However, the above-mentioned patent still has certain defects. It is supported by the first-stage cylinder, the second-stage cylinder, and the third-stage cylinder. Since the first-stage cylinder, the second-stage cylinder, and the third-stage cylinder are installed in a fixed manner, this installation method is not convenient for disassembling and replacing the first-stage cylinder, the second-stage cylinder, and the third-stage cylinder. Therefore, we propose a three-telescopic column for ultra-thin coal seam support to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a three-telescopic column for ultra-thin coal seam support to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A three-telescopic column for ultra-thin coal seam support includes a base plate. A support assembly is connected to one side of the base plate, and a three-telescopic column assembly is connected to one side of the support assembly. The three-telescopic column assembly includes two sets of fixing blocks. One side of each fixing block is hinged to an upper fixing seat via a first pin. One side of each upper fixing seat has an internal fixing screw hole. An external threaded connecting rod is provided below each upper fixing seat. One end of each external threaded connecting rod is connected to a three-telescopic column body. One end of each three-telescopic column body is connected to an external threaded connecting post. Two sets of positioning plates are connected to one side of the base plate. One side of each positioning plate is hinged to a lower fixing seat via a second pin. One side of each lower fixing seat has an internal positioning screw hole. Limiting screw holes are provided on the outer surfaces of both the lower and upper fixing seats. Limiting screws are provided on the outer surfaces of both the lower and upper fixing seats.

[0007] In a further embodiment, the support assembly includes a top plate, the outer surface of which is hinged to two vertical plates via a third pin, one side of each vertical plate being connected to one side of a bottom plate, and one side of the top plate being hinged to two hydraulic rods via two fourth pins, one end of each hydraulic rod being hinged to a connecting plate via a fifth pin, and one side of each connecting plate being connected to one side of the bottom plate.

[0008] In a further embodiment, a connecting block is connected to one side of the top plate, and the upper surface of the connecting block is connected to the inner top wall of the top plate.

[0009] In a further embodiment, a warning sticker is affixed to the outer surface of each of the three telescopic columns, each of the external threaded connecting columns is adapted to the internal positioning screw hole, and each of the limiting screw holes is adapted to the limiting screw.

[0010] In a further embodiment, a base pad is connected to one side of the base plate, and the base pad has anti-slip texture on one side.

[0011] In a further embodiment, each of the limiting screws has an internal hexagonal wrench groove on its outer surface, and each of the external threaded connecting rods is adapted to the internal fixing screw hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device uses an internal fixing screw hole to fit the external threaded connecting rod, and an external threaded connecting column to fit the internal positioning screw hole, which allows for convenient and quick installation and disassembly of the three telescopic column assembly. It also uses a limiting screw hole to fit the limiting screw, which allows for convenient limiting of the external threaded connecting rod and external threaded connecting column. Furthermore, combined with the support capacity of the bracket assembly and the use of the first, second, third, fourth, and fifth pins, it allows for convenient adjustment of the top plate height, increasing the functionality of the equipment. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of the base plate of the three-telescopic column used for ultra-thin coal seam support.

[0015] Figure 2 This is a side sectional view of the fixing block in the three telescopic columns used for supporting ultra-thin coal seams.

[0016] Figure 3 This is a rear view of the base plate of the three telescopic columns used in the support of extremely thin coal seams.

[0017] Figure 4 Three telescopic columns for support of extremely thin coal seams Figure 3 A magnified structural diagram of part A in the middle.

[0018] In the diagram: 1. Base plate; 2. Support assembly; 201. Top plate; 202. Hydraulic rod; 203. Connecting plate; 204. Vertical plate; 3. Three-telescopic column assembly; 301. Fixing block; 302. Upper fixing seat; 303. Internal fixing screw hole; 304. External threaded connecting rod; 305. Three-telescopic column body; 306. External threaded connecting column; 307. Positioning plate; 308. Lower fixing seat; 309. Internal positioning screw hole; 310. Limiting screw hole; 311. Limiting screw; 4. Warning sticker; 5. Base pad; 6. Connecting block; 7. Hexagonal wrench slot. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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 1-4In this utility model, a three-telescopic column for an ultra-thin coal seam support includes a base plate 1. A support assembly 2 is connected to one side of the base plate 1, and a three-telescopic column assembly 3 is connected to one side of the support assembly 2. The three-telescopic column assembly 3 includes two sets of fixing blocks 301. Each set of fixing blocks 301 has an upper fixing seat 302 hinged to one side of its side via a first pin. Each upper fixing seat 302 has an internal fixing screw hole 303 on one side of its side. Each upper fixing seat 302 has an external threaded connecting rod 304 below its side. One end of each external threaded connecting rod 304 is connected to a three-telescopic column body 305, and one end of each three-telescopic column body 305 is connected to an external threaded connecting column 306. Two sets of positioning plates 307 are connected to one side of the base plate 1. Each set of positioning plates 307 has a lower fixing seat 308 hinged to one side of its side via a second pin. Each lower fixing seat 308... Each side has an internal positioning screw hole 309. The outer surface of each lower fixed seat 308 and the outer surface of each upper fixed seat 302 have a limiting screw hole 310. The outer surface of each lower fixed seat 308 and the outer surface of each upper fixed seat 302 are provided with a limiting screw 311. The internal fixing screw hole 303 is adapted to the external threaded connecting rod 304, and the external threaded connecting column 306 is adapted to the internal positioning screw hole 309. This allows for convenient and quick installation and disassembly of the three telescopic column assembly 3. In conjunction with the limiting screw hole 310 and the limiting screw 311, it can conveniently limit the external threaded connecting rod 304 and the external threaded connecting column 306. In addition, combined with the support capacity of the bracket assembly 2 and the use of the first pin, second pin, third pin, fourth pin and fifth pin, it can conveniently adjust the height of the top plate 201 and increase the functionality of the equipment.

[0023] The support assembly 2 includes a top plate 201. Two vertical plates 204 are hinged to the outer surface of the top plate 201 via a third pin. One side of each vertical plate 204 is connected to one side of the bottom plate 1. Two hydraulic rods 202 are hinged to one side of the top plate 201 via two fourth pins. One end of each hydraulic rod 202 is hinged to a connecting plate 203 via a fifth pin. One side of each connecting plate 203 is connected to one side of the bottom plate 1. The propulsive force of the hydraulic rods 202, in conjunction with the use of the third, fourth, and fifth pins, is utilized. It allows for easy adjustment of the height of the top plate 201. A connecting block 6 is connected to one side of the top plate 201, and the upper surface of the connecting block 6 is connected to the inner top wall of the top plate 201. The connecting block 6 can increase the support strength of the top plate 201. A warning sticker 4 is pasted on the outer surface of each three telescopic column 305. Each external threaded connecting column 306 is adapted to the internal positioning screw hole 309, and each limiting screw hole 310 is adapted to the limiting screw 311. The warning sticker 4 can improve the visibility of the three telescopic column 305.

[0024] A base pad 5 is connected to one side of the base plate 1. The base pad 5 has anti-slip texture on one side. The base pad 5 can improve the stability of the base plate 1. Each limit screw 311 has an internal hexagonal wrench groove 7 on its outer surface. Each external threaded connecting rod 304 is adapted to the internal fixing screw hole 303. The internal hexagonal wrench groove 7 can be used to easily rotate the screw using an external hexagonal wrench.

[0025] The working principle of this utility model is as follows:

[0026] First, it is moved to the location of use, and the top plate 201 is supported by the hydraulic rod 202. If a new three-telescopic column assembly 3 needs to be replaced, the limiting screw 311 is rotated to release the limiting of the external threaded connecting rod 304 and the external threaded connecting column 306. At the same time, the sliding rod inside the three-telescopic column body 305 can rotate. Rotating the external threaded connecting rod 304 and the external threaded connecting column 306 separates them from the upper fixed seat 302 and the lower fixed seat 308, respectively. At the same time, a new three-telescopic column body 305 is prepared and limited again. The structure of the three-telescopic column assembly 3 is the same as that in the above patent. The bracket assembly 2 is also the same as that in the above patent, and it can be finely adjusted according to the above patent. The above is the complete usage process of this utility model.

[0027] 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.

[0028] 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 three telescopic upright column for a thin seam support, characterized in that: The utility model provides a kind of support assembly, including bottom plate (1), the side surface of the bottom plate (1) is connected with support assembly (2), the side surface of the support assembly (2) is connected with three telescopic column assemblies (3), the three telescopic column assemblies (3) include two groups of fixed blocks (301), the side surface of each group The fixed block (301) is hinged with upper fixed seat (302) by first pin shaft, the side surface of each upper fixed seat (302) is provided with inner fixed screw hole (303), the lower surface of each upper fixed seat (302) is equipped with outer thread connecting rod (304), the end of each outer thread connecting rod (304) is connected with three telescopic column body (305), the end of each three telescopic column body (305) is connected with outer thread connecting column (306), the side surface of the bottom plate (1) is connected with two groups of positioning plate (307), the side surface of each group The positioning plate (307) is hinged with lower fixed seat (308) by second pin shaft, the side surface of each lower fixed seat (308) is provided with inner positioning screw hole (309), the outer surface of each lower fixed seat (308) and the outer surface of upper fixed seat (302) are provided with limiting screw hole (310), the outer portion of each lower fixed seat (308) and the outer portion of upper fixed seat (302) are equipped with limiting screw (311).

2. The three-retractable upright column for a very thin coal seam support according to claim 1, characterized in that: The support assembly (2) includes top plate (201), the outer surface of the top plate (201) is hinged with two vertical boards (204) by third pin shaft, the side surface of each vertical board (204) is connected with the side surface of bottom plate (1), the side surface of the top plate (201) is hinged with two hydraulic rods (202) by two fourth pin shafts, the end of each hydraulic rod (202) is hinged with connecting plate (203) by fifth pin shaft, the side surface of each connecting plate (203) is connected with the side surface of bottom plate (1).

3. The three-retractable upright column for a very thin coal seam support according to claim 2, characterized in that: The side surface of the top plate (201) is connected with connecting block (6), the upper surface of the connecting block (6) is connected with the inner top wall of top plate (201).

4. The three-retractable upright column for a very thin coal seam support according to claim 1, characterized in that: The outer surface of each three telescopic column body (305) is pasted with warning sticker (4), each outer thread connecting column (306) is matched with inner positioning screw hole (309), each limiting screw hole (310) is matched with limiting screw (311).

5. The three-retractable upright column for a very thin coal seam support according to claim 1, characterized in that: The side surface of the bottom plate (1) is connected with bottom pad (5), the side surface of the bottom pad (5) is provided with anti-skid line.

6. The three-retractable upright column for a very thin coal seam support according to claim 1, characterized in that: The outer surface of each limiting screw (311) is provided with inner hexagonal spanner groove (7), each outer thread connecting rod (304) is matched with inner fixed screw hole (303).

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