Drawer type face guard device of coal mine hydraulic support

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a drawer type face guard plate device for a coal mine hydraulic support, and aims to solve the problems that a conventional face guard plate device is low in face guard height, small in face guard coverage area and the like when a mining coal wall caving is protected through an underground hydraulic support at present. Usually, the coal wall caving protection effect is poor, and finally the mining efficiency of a mine and the overall caving protection efficiency are low. The device is mainly composed of a hydraulic support end plate, a connecting plate, an oil cylinder, a first protective plate, a second protective plate, a lug plate, a sliding plate and the like, the second protective plate sliding in a drawer mode is additionally arranged on the side portion of the original first protective plate of the hydraulic support, and then the oil cylinder controls overall reverse rotation of the first protective plate and the second protective plate and controls stretching and retracting of the second protective plate on the side portion of the first protective plate. Therefore, the protection area of the protection plate on the wall caving is further increased, the protection quality of the wall caving is effectively ensured, and the overall efficiency and the operation safety of underground excavation are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a drawer-type side guard plate device for a coal mine hydraulic support. Background Art

[0002] At present, in the process of underground mining in coal mines, since most of the mining working face tunnels are wavy and coexist up and down the mountain, the thickness and inclination of the coal seam near the fault vary greatly. During the mining period, the working face accounts for more than 85% of the working face, and the roof pressure is large and the roof is broken during the mining period. The coal wall is very unstable, and the roof spalling and beam end roof falling often occur, which seriously affects the comprehensive mining efficiency and the safety of the workers. Especially under the conditions of broken roof and soft coal seam, the problem is more serious. Under the action of the mine roof pressure, the coal wall spalling and beam end roof falling induce each other, forming a vicious circle. There is also a risk of coal wall spalling and injury when the operators clean the floating coal in front of the frame, which increases the labor intensity of the operation. The hydraulic support guard plate is an important structural part of the hydraulic support. When working normally, the guard plate extends out and close to the coal wall to prevent coal wall spalling or act as a buffer when coal wall spalling occurs. When the coal mining machine cuts in front of the hydraulic support, the guard plate needs to be retracted to allow the coal mining machine to pass. After the hydraulic support moves to a new working position, the guard plate is re-extended to support the newly exposed coal wall. Therefore, the safety performance of the hydraulic support guard plate plays an important role in the safe production of the working face. However, when the existing commonly used underground hydraulic supports are used to protect the coal wall spalling in mining, the conventional guard plate device has problems such as low guard height and small guard coverage area, which usually leads to poor coal wall spalling protection effect, and ultimately causes low mining efficiency and overall efficiency of spalling protection in the mine. Utility Model Content

[0003] The utility model provides a drawer-type side guard plate device for a coal mine hydraulic support, so as to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A coal mine hydraulic support drawer-type side guard plate device includes a rotating support plate rotatably arranged on one side of the hydraulic support end plate, a first guard plate is fixedly connected to one side of the rotating support plate, a first oil cylinder is rotatably arranged between the first guard plate and the hydraulic support end plate, a second guard plate is slidably arranged on the side of the first guard plate, and multiple second oil cylinders are arranged between the first guard plate and the second guard plate.

[0006] Furthermore, a plurality of first connecting plates are obliquely provided on one side of the hydraulic support end plate, a plurality of second connecting plates are matched with the first connecting plates on one side of the first guard plate, and the first oil cylinder is rotatably connected to the first connecting plates and the second connecting plates.

[0007] Furthermore, a plurality of first ear plates are provided on both sides of the bottom of the hydraulic support end plate close to the first connecting plate, and the rotating support plates are rotatably connected to the first ear plates.

[0008] Furthermore, slide plates are provided on both sides of the second guard plate close to the first guard plate, slide rails are provided on one side of the slide plates close to the first guard plate, and slide grooves are provided on the sides of the first guard plate to match the slide rails.

[0009] Furthermore, a plurality of second ear plates are provided on one side of the first guard plate, a plurality of mounting grooves are opened on the side of the first guard plate away from the rotating support plate, a plurality of third ear plates are matched on the top of the second guard plate located at the mounting groove, and a second oil cylinder is connected between the second ear plates and the third ear plates.

[0010] Furthermore, a reinforcing plate is provided between the rotating support plates, and a pushing support plate is vertically provided on the side of the second guard plate away from the third ear plate.

[0011] The utility model has the following beneficial effects:

[0012] The utility model provides a drawer-type guard plate device for a coal mine hydraulic support, which is mainly composed of components such as a hydraulic support end plate, a connecting plate, an oil cylinder, a first and a second guard plate, an ear plate and a slide plate. By adding a drawer-type sliding second guard plate to the side of the original first guard plate of the hydraulic support, and then using the oil cylinder to respectively control the overall reversal of the first and the second guard plates and the telescopic control of the second guard plate on the side of the first guard plate, the guard plate further increases the protection area of ​​the coal wall spalls, effectively ensures the protection quality of the spalls, and thus improves the overall efficiency and operation safety of underground mining, and solves the problem that when underground hydraulic supports are used to protect the coal wall spalls in mining, the conventional guard plate devices generally have the problems of low guard height and small guard coverage area, which usually lead to poor coal wall spall protection effect, and ultimately cause the problem of low mine mining efficiency and overall low spall protection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] The meanings of the reference numerals are as follows:

[0015] 1. Hydraulic support end plate; 2. First connecting plate; 3. First oil cylinder; 4. First ear plate; 5. Second connecting plate; 6. Rotating support plate; 7. First guard plate; 8. Second ear plate; 9. Reinforced plate; 10. Slide plate; 11. Slide rail; 12. Slide groove; 13. Mounting groove; 14. Push support plate; 15. Third ear plate; 16. Second oil cylinder; 17. Second guard plate. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, a drawer-type side guard plate device of a coal mine hydraulic support includes a rotating support plate 6 rotatably arranged on one side of a hydraulic support end plate 1, a first guard plate 7 is fixedly connected to one side of the rotating support plate 6, a first oil cylinder 3 is rotatably provided between the first guard plate 7 and the hydraulic support end plate 1, a second guard plate 17 is slidably provided on the side of the first guard plate 7, and a plurality of second oil cylinders 16 are provided between the first guard plate 7 and the second guard plate 17.

[0018] A plurality of first connecting plates 2 are obliquely provided on one side of the hydraulic support end plate 1, a plurality of second connecting plates 5 are matched with the first connecting plate 2 on one side of the first guard plate 7, and the first oil cylinder 3 is rotatably connected to the first connecting plate 2 and the second connecting plate 5.

[0019] A plurality of first ear plates 4 are provided on both sides of the bottom of the hydraulic support end plate 1 close to the first connecting plate 2 , and the rotating support plates 6 are rotatably connected to the first ear plates 4 .

[0020] Slide plates 10 are provided on both sides of the second guard plate 17 close to the first guard plate 7 , and slide rails 11 are provided on one side of the slide plate 10 close to the first guard plate 7 . Slide grooves 12 are provided on the sides of the first guard plate 7 to match the slide rails 11 .

[0021] A plurality of second ear plates 8 are also provided on one side of the first guard plate 7, and a plurality of mounting grooves 13 are opened on the side of the first guard plate 7 away from the rotating support plate 6. A plurality of third ear plates 15 are also matched on the top of the second guard plate 17 located at the mounting groove 13, and a second oil cylinder 16 is connected between the second ear plate 8 and the third ear plate 15.

[0022] A reinforcing plate 9 is provided between the rotating support plates 6 , and a push support plate 14 is vertically provided on the side of the second guard plate 17 away from the third ear plate 15 .

[0023] When the utility model is used in a specific application, it is pre-checked that each component is well installed to ensure that the rotating support plate 6 and the first oil cylinder 3 rotate and retract well, and then the first guard plate 7 and the second guard plate 17 are driven to the overall structure of the mining platform tunnel plate protection position through the hydraulic support end plate 1, and the first oil cylinder 3 is controlled to extend, and the first connecting plate 2 and the second connecting plate 5 are driven to rotate the overall structure of the first guard plate 7 and the second guard plate 17 to the plate top plate, and then the second oil cylinder 16 is controlled to extend, and the second guard plate 17 and the slide plate 10 are driven to slide on the side of the first guard plate 7. The drawer-like sliding in the groove 12 further expands the overall protection coverage area of ​​the hydraulic support end plate 1, effectively improves the bearing capacity of the protection plate, reduces the safety hazard of coal spalling entering the pedestrian passage, and thus solves the current problem of using underground hydraulic supports to protect the coal wall spalling in mining. Due to the common problems of low protection height and small protection coverage area of ​​conventional protection plate devices, the coal wall spalling protection effect is poor, which ultimately causes low mine mining efficiency and overall safety of spalling protection. Therefore, the device has good practicality.

Claims

1. A drawer-type side guard plate device for a coal mine hydraulic support, characterized by: The invention comprises a rotating support plate (6) rotatably arranged on one side of a hydraulic support end plate (1); a first guard plate (7) is fixedly connected to one side of the rotating support plate (6); a first oil cylinder (3) is rotatably arranged between the first guard plate (7) and the hydraulic support end plate (1); a second guard plate (17) is slidably arranged on the side of the first guard plate (7); and a plurality of second oil cylinders (16) are arranged between the first guard plate (7) and the second guard plate (17).

2. A drawer-type side guard plate device for a coal mine hydraulic support according to claim 1, characterized in that: A plurality of first connecting plates (2) are obliquely provided on one side of the hydraulic support end plate (1), a plurality of second connecting plates (5) are matched with the first connecting plate (2) on one side of the first guard plate (7), and the first oil cylinder (3) is rotatably connected to the first connecting plate (2) and the second connecting plate (5).

3. A drawer-type side guard plate device for a coal mine hydraulic support according to claim 2, characterized in that: A plurality of first ear plates (4) are provided on both sides of the bottom of the hydraulic support end plate (1) close to the first connection plate (2), and the rotating support plates (6) are all rotatably connected to the first ear plates (4).

4. The drawer-type side guard plate device for a coal mine hydraulic support according to claim 1 is characterized in that: Slide plates (10) are provided on both sides of the second guard plate (17) close to the first guard plate (7), and slide rails (11) are provided on one side of the slide plate (10) close to the first guard plate (7), and slide grooves (12) are provided on the sides of the first guard plate (7) to match the slide rails (11).

5. A drawer-type side guard plate device for a coal mine hydraulic support according to claim 4, characterized in that: A plurality of second ear plates (8) are also provided on one side of the first guard plate (7), a plurality of mounting grooves (13) are provided on a side of the first guard plate (7) away from the rotating support plate (6), a plurality of third ear plates (15) are also matched on the top of the second guard plate (17) located at the mounting grooves (13), and a second oil cylinder (16) is connected between the second ear plates (8) and the third ear plates (15).

6. A drawer-type side guard plate device for a coal mine hydraulic support according to claim 5, characterized in that: A reinforcing plate (9) is provided between the rotating support plates (6), and a push support plate (14) is vertically provided on the side of the second guard plate (17) away from the third ear plate (15).

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