Underground safety protection device for coal mine production

Abstract

The utility model belongs to the technical field of underground safety protection for coal mine production, and particularly relates to an underground safety protection device for coal mine production. Comprising a bottom plate, two stand columns are fixed to the top of the bottom plate, a baffle is arranged between the two stand columns, each stand column comprises a sleeve, a telescopic sleeve capable of ascending and descending is installed in each sleeve in a penetrating mode, and driving assemblies for driving the telescopic sleeves to ascend and descend are arranged in the telescopic sleeves and the sleeves; every two adjacent baffles are hinged through a connecting plate, the left end and the right end of the baffle located on the uppermost side are rotationally connected to the telescopic sleeves on the two sides respectively, and the left end and the right end of the baffle located on the lowermost side are rotationally connected to the sleeves on the left side and the right side respectively. The stand column is arranged to be of a liftable structure, the stand column is driven by the hydraulic cylinder to ascend and descend and drives all the baffles to be unfolded or folded, when the stand column retracts, all the baffles are folded, the overall occupied space is reduced, and carrying, transporting and storing are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of underground safety protection technology in coal mine production, and in particular relates to an underground safety protection device for coal mine production. Background Technology

[0002] Although there are many types of coal mining machines on the market today, most of them are just different in form and their functions have not changed much. Currently, the coal mining machines used in coal mining have no protective devices in front of them. During the mining process, coal blocks may fly out and hit the coal mining machine or workers, which is unsafe, prone to accidents, and affects work efficiency.

[0003] One existing technology uses several baffles that are hinged together and can be folded or unfolded during use. The height of the overall protective device can be adjusted by varying the unfolded height. However, since the height of the uprights on both sides of the baffles is not adjustable, they occupy a portion of the space, which causes some inconvenience during handling, transportation, and storage. Utility Model Content

[0004] The purpose of this utility model is to provide a safety protection device for underground coal mine production, which enables the height adjustment of the column, reduces space occupation, and makes it more convenient for handling, transportation and storage.

[0005] The aforementioned underground safety protection device for coal mine production includes a base plate, with two columns fixed to the top of the base plate in a left-right arrangement. Between the two columns, several baffles are arranged sequentially from bottom to top. Each column includes a sleeve, and a telescopic sleeve that can be raised and lowered is installed inside the sleeve. The telescopic sleeve and the sleeve's interior are equipped with a drive assembly for raising and lowering the telescopic sleeve. Each pair of adjacent baffles is hinged together by a connecting plate. The left and right ends of the uppermost baffle are rotatably connected to the telescopic sleeves on both sides, and the left and right ends of the lowermost baffle are rotatably connected to the sleeves on both sides.

[0006] Furthermore, the base plate has an "H" shaped structure and mounting holes for mounting it on the ground.

[0007] Furthermore, the drive assembly includes a hydraulic cylinder, the movable end of the hydraulic cylinder piston rod is connected to the inner top of the telescopic sleeve, and the base of the hydraulic cylinder is fixed to the top of the base plate; the cylinder barrel of the hydraulic cylinder is located inside the sleeve.

[0008] Furthermore, connecting grooves are provided on the top or bottom of the baffle on the upper and lower sides of the corresponding connecting plate, and the upper and lower sides of the connecting plate are respectively hinged to the two adjacent baffles through hinge columns.

[0009] Furthermore, a first through hole is provided on the uppermost baffle, which is open to the left and right. A first rotating shaft is installed in the first through hole, and the left and right ends of the first rotating shaft are respectively connected to the telescopic sleeves on the left and right sides and can rotate freely.

[0010] Furthermore, a second through hole is provided on the bottommost baffle, which is open to the left and right. A second rotating shaft is installed in the second through hole, and the left and right ends of the second rotating shaft are respectively connected to the sleeves on the left and right sides and can rotate freely.

[0011] Furthermore, fixing plates are fixed on the side walls of the sleeve on both the front and rear sides of the corresponding baffle, and clamping plates are provided on both the front and rear sides of the baffle to hold it; a spring is provided between the clamping plate on the front side and the fixing plate on the front side to push the clamping plate to hold it, and a spring is provided between the clamping plate on the rear side and the fixing plate on the rear side to push the clamping plate to hold it.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model sets the column in a height-adjustable structure. The column is driven to rise and fall by a hydraulic cylinder, which in turn causes all the baffles to unfold or fold. When the column is retracted, all the baffles are folded, reducing the overall space occupied and making it more convenient in the process of handling, transportation and storage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point AA;

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0017] The components in the diagram are named as follows: 1. Base plate; 2. Sleeve; 3. Hydraulic cylinder; 4. Telescopic sleeve; 5. Baffle; 6. Connecting plate; 7. Fixing plate; 8. Spring; 9. Clamping plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0019] Example

[0020] This embodiment describes an underground safety protection device for coal mine production, such as... Figures 1 to 3As shown, it includes a base plate 1, which has an "H" shaped structure. The base plate 1 has mounting holes for mounting it on the ground. The mounting holes are respectively opened at the four ends of the "H" shaped structure of the base plate 1. In use, it is fixed to the ground by expansion screws or pre-embedded screws.

[0021] Two columns are fixed on the top of the base plate 1, arranged in a left-right orientation. Several baffles 5 are arranged between the two columns, arranged from bottom to top. Each column includes a sleeve 2, and a telescopic sleeve 4 that can be raised and lowered is installed inside the sleeve 2. The telescopic sleeve 4 and the sleeve 2 are equipped with a drive assembly that drives the telescopic sleeve 4 to rise and fall.

[0022] The drive assembly includes a hydraulic cylinder 3, the movable end of the lifting rod of the hydraulic cylinder 3 is connected to the inner top of the telescopic sleeve 4, the base of the hydraulic cylinder 3 is fixed to the top of the base plate 1, and the cylinder barrel of the hydraulic cylinder 3 is located inside the sleeve 2.

[0023] Hydraulic cylinder 3 is existing technology. The main components of the hydraulic cylinder include cylinder barrel, cylinder head, piston, and lifting rod. The movable end of the lifting rod is connected to the inner top of the telescopic sleeve 4 via a connecting sleeve, and the base is located at the bottom of the cylinder barrel. In use, the hydraulic cylinder 3 drives the baffle 5 to rise or fall within the sleeve 2.

[0024] like Figure 1 and Figure 3 As shown, during the installation of the hydraulic cylinder 3, two hydraulic pipe connection ports are provided on the side wall of the cylinder barrel, which are arranged vertically. The hydraulic pipe needs to enter the inside of the sleeve 2 and connect with the connection port. Therefore, a through hole with internal and external communication is opened on the side wall of the sleeve 2. At the same time, in order not to interfere with the hydraulic pipe during the up and down movement of the telescopic sleeve 4, a transition groove with internal and external communication is opened on the side wall of the telescopic sleeve 4. The transition groove is connected to the lower end of the telescopic sleeve 4.

[0025] In addition, the drive component can also be an electric push rod, which drives the telescopic sleeve 4 to move up and down by electricity; the upper end of the telescopic rod of the electric push rod is connected to the bottom of the telescopic sleeve 4, and its base is fixed to the top of the base plate 1 and located inside the sleeve 2.

[0026] Each pair of adjacent baffles 5 is hinged together by a connecting plate 6. Connecting grooves are provided on the top or bottom of the baffles 5 on both sides of the connecting plate 6. The top and bottom sides of the connecting plate 6 are hinged to the adjacent baffles 5 via hinge posts. During production, connecting holes are provided on the left and right sidewalls of the connecting groove, communicating with the left and right ends of the baffles 5. Two hinge holes communicating left and right are provided on the top and bottom ends of the connecting plate 6. Hinges are independently installed within these hinge holes, with their left and right ends respectively inserted into the connecting holes on the left and right sides of the connecting groove. In use, adjacent baffles 5 can be folded together via the connecting plate 6.

[0027] The left and right ends of the uppermost baffle 5 are rotatably connected to the telescopic sleeves 4 on both sides, and the left and right ends of the lowermost baffle 5 are rotatably connected to the sleeves 2 on the left and right sides.

[0028] The uppermost baffle 5 has a first through hole that connects the left and right sides. A first rotating shaft is inserted into the first through hole. The left and right ends of the first rotating shaft are respectively connected to the telescopic sleeves 4 on the left and right sides and can rotate freely. During production, connecting pipes are fixed on the outer walls of the telescopic sleeves 4 corresponding to the two ends of the first rotating shaft. The two ends of the first rotating shaft are respectively inserted into the two connecting pipes and can rotate freely.

[0029] The bottommost baffle 5 has a second through hole that connects the left and right sides. A second rotating shaft is inserted into the second through hole, and the left and right ends of the second rotating shaft are respectively connected to the sleeves 2 on the left and right sides and can rotate freely. During production, positioning holes are opened on the side wall of the sleeve 2 corresponding to the left and right ends of the second rotating shaft. The two ends of the second rotating shaft are respectively inserted into the two positioning holes and can rotate freely.

[0030] In actual use, the hydraulic cylinders 3 inside the left and right sleeves 2 simultaneously drive the telescopic sleeve 4 to rise, and drive the connected baffle 5 to rise. When the uppermost baffle 5 rises, it pulls all the baffles 5 to unfold, raising the blocking surface. The lowermost baffle 5 is positioned on the sleeve 2 through the second rotating shaft and only rotates. That is to say, when the telescopic sleeve 4 rises, it drives the baffle 5 to unfold, and when the telescopic sleeve 4 falls, the baffle 5 folds. This allows the overall structure, including the column, to be adjusted in height, reducing storage space and making handling, transportation, and post-production storage more convenient.

[0031] like Figure 2 As shown, fixing plates 7 are fixed to the side walls of sleeve 2 on both the front and rear sides of the baffle 5. Clamping plates 9 are provided on both the front and rear sides of the baffle 5 to hold it. A spring 8 is provided between the clamping plate 9 on the front side and the fixing plate 7 on the front side to push the clamping plate 9 to hold it. A spring 8 is also provided between the clamping plate 9 on the rear side and the fixing plate 7 on the rear side to push the clamping plate 9 to hold it. The clamping plate 9 and the fixing plate 7 are independent of each other. A sliding component that moves inward and outward is provided between the clamping plate 9 and the sleeve 2. For example, a groove is opened on the side wall of the sleeve 2, and a slider is opened on the side wall of the fixing plate 7. The slider slides in the groove. In use, under the push of the spring 8, the fixing plate 7 holds the baffle 5, which improves the stability of the baffle 5 located between the sleeves 2 after unfolding to a certain extent.

Claims

1. A safety protection device for underground coal mine production, comprising a base plate (1), two columns fixed to the top of the base plate (1) in a left-right arrangement, and a plurality of baffles (5) arranged sequentially from bottom to top between the two columns, characterized in that: The column includes a sleeve (2), and a telescopic sleeve (4) that can be raised and lowered is installed inside the sleeve (2). The telescopic sleeve (4) and the sleeve (2) are provided with a drive assembly for raising and lowering the telescopic sleeve (4). Each pair of adjacent baffles (5) are hinged together by a connecting plate (6). The left and right ends of the uppermost baffle (5) are rotatably connected to the telescopic sleeves (4) on both sides, and the left and right ends of the lowermost baffle (5) are rotatably connected to the sleeves (2) on the left and right sides.

2. The underground safety protection device for coal mine production according to claim 1, characterized in that: The base plate (1) has an "H" shaped structure and mounting holes for mounting it on the ground are provided on the base plate (1).

3. The underground safety protection device for coal mine production according to claim 1, characterized in that: The drive assembly includes a hydraulic cylinder (3), the movable end of the piston rod of the hydraulic cylinder (3) is connected to the inner top of the telescopic sleeve (4), and the base of the hydraulic cylinder (3) is fixed to the top of the base plate (1); the cylinder barrel of the hydraulic cylinder (3) is located inside the sleeve (2).

4. The underground safety protection device for coal mine production according to claim 1, characterized in that: The upper and lower sides of the corresponding connecting plate (6) are provided with connecting grooves at the top or bottom of the baffle (5). The upper and lower sides of the connecting plate (6) are respectively hinged between two adjacent baffles (5) through hinge pins.

5. The underground safety protection device for coal mine production according to claim 1, characterized in that: The uppermost baffle (5) has a first through hole that connects the left and right sides. A first rotating shaft is installed in the first through hole. The left and right ends of the first rotating shaft are connected to the telescopic sleeves (4) on the left and right sides respectively and can rotate freely.

6. The underground safety protection device for coal mine production according to claim 1, characterized in that: The bottommost baffle (5) has a second through hole that connects the left and right sides. A second rotating shaft is installed in the second through hole. The left and right ends of the second rotating shaft are connected to the sleeves (2) on the left and right sides respectively and can rotate freely.

7. The underground safety protection device for coal mine production according to claim 1, characterized in that: Fixing plates (7) are fixed on the side walls of the sleeve (2) on the front and rear sides of the corresponding baffle (5). Clamping plates (9) are provided on the front and rear sides of the baffle (5) to clamp it. A spring (8) is provided between the clamping plate (9) on the front side and the fixing plate (7) on the front side to push the clamping plate (9) to clamp it. A spring (8) is provided between the clamping plate (9) on the rear side and the fixing plate (7) on the rear side to push the clamping plate (9) to clamp it.

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