A coal mine fully mechanized coal mining face end mining coal cleaning device

Abstract

This invention relates to a coal cleaning device for the final stage of fully mechanized coal mining faces. The device includes a frame, guide shoes, and support shoes. The support shoes support the upper surface of the shovel plate of a scraper conveyor. The guide shoes slide and guide the scraper conveyor. The device moves relative to the scraper conveyor when pushed or pulled by the coal mining machine. One end of a telescopic frame extends into the frame and slides in a forward-backward direction. The shoveling mechanism is located on the telescopic frame and includes a plow-shaped shovel head and a connecting plate. One end of the connecting plate is hinged to the telescopic frame, and the other end is connected to the plow-shaped shovel head. A telescopic cylinder drives the telescopic frame and the shoveling mechanism to move forward and backward. A lifting cylinder drives the plow-shaped shovel head to lift or lower. The plow-shaped shovel head flips up the accumulated coal and throws it into the scraper conveyor chute. This invention can quickly, safely, and efficiently complete the final stage of coal cleaning in fully mechanized mining faces using mechanical means.

Description

Technical Field

[0001] This invention relates to the field of coal mine fully mechanized mining equipment technology, and more specifically, to a coal cleaning device for the final stage of fully mechanized coal mining faces. Background Technology

[0002] When the longwall mining face reaches the final mining stage, it is necessary to lay a mesh on top of the hydraulic support, and then... Figure 1 The coal blocks in the coal-to-be-cleaned area A between the scraper conveyor 4 and the stacked support 2 in the retreat channel are cleaned to facilitate the equipment retreat after the working face support 1 has completed operations such as frame pulling and beam lifting. Therefore, the quality of the final mining breakthrough is the prerequisite and foundation for achieving safe and rapid retreat of the working face. By continuously optimizing the final mining technology and process, shortening the final mining time, and adopting advanced technical equipment to ensure safe and rapid retreat of the working face, labor efficiency can be improved, labor intensity can be reduced, and the mining continuity rate can be increased, thus achieving safe and efficient production.

[0003] Currently, the coal cleaning work between the front end of the scraper conveyor's shovel plate and the stack support after the final mining is completed mainly relies on manual labor, generally requiring 60-80 people, and sometimes up to 100 people working simultaneously. Personnel need to be drawn from other teams to help with coal cleaning. The on-site personnel are numerous, the operating space is cramped, and there are many safety hazards. Moreover, the more people cleaning the coal and the longer the time, the greater the safety risks. This indicates that the existing coal cleaning method has problems of high labor intensity, low operating efficiency, and high safety risks. Summary of the Invention

[0004] The purpose of this invention is to propose a coal cleaning device for the final stage of fully mechanized coal mining faces, which can solve the technical problems of high manual labor intensity, low cleaning efficiency, and high safety risks in current final stage coal cleaning methods.

[0005] This invention provides the following technical solution: a coal cleaning device for the final stage of fully mechanized coal mining faces, mainly composed of a body, a telescopic frame, a coal shoveling mechanism, a telescopic cylinder, and a lifting cylinder. The body includes a body frame, guide slippers, and support slippers. The body frame is hollow inside. The guide slippers and support slippers are located at the lower end of the body frame. The support slippers are used to support the upper surface of the coal shoveling plate of the scraper conveyor and slide in cooperation with the coal shoveling plate of the scraper conveyor. The guide slippers are used to slide in cooperation with the pins of the scraper conveyor. The body frame is provided with a traction structure for connecting with the coal mining machine. When in use, the body is pushed or pulled by the coal mining machine and moves relative to the scraper conveyor.

[0006] The telescopic frame is connected with the machine body frame along the front and back direction by a guide sliding cooperation, the coal shoveling mechanism is located on the telescopic frame and includes a plow-shaped coal shoveling head and two connecting plates, the connecting plates extend along the width direction of the working face, one end of the connecting plates is hinged with the telescopic frame, and the other end is connected with the plow-shaped coal shoveling head, two ends of the telescopic oil cylinder are hinged with the machine body frame and the telescopic frame respectively, and the telescopic oil cylinder is used to drive the telescopic frame and the coal shoveling mechanism to move forward and backward, the lower side of the telescopic frame is provided with a lifting lug plate extending downward, two lifting oil cylinders are arranged, the lower end of the lifting oil cylinder is hinged with the lifting lug plate, and the upper end is hinged with the lower side of the connecting plate, the lifting oil cylinder is used to drive the plow-shaped coal shoveling head to lift or fall, and the plow-shaped coal shoveling head is used to turn up the accumulated coal and throw it into the chute of the scraper conveyor during the movement of the machine body.

[0007] Beneficial effects: when the fully mechanized coal mining face advances to the end of the mining stage and the top net is completed, the present application is installed on the scraper conveyor, the guide sliding shoe is in sliding guide cooperation with the pin row on the scraper conveyor, the support shoe is supported on the coal shoveling plate of the scraper conveyor, the machine body is connected with the coal mining machine through the traction structure, the coal mining machine can directly contact and push or pull the machine body to move along the scraper conveyor, the accumulated coal between the scraper conveyor and the pile type support is turned up and thrown into the chute of the scraper conveyor during the movement, the accumulated coal at the end of the mining is quickly cleaned up, the plow-shaped coal shoveling head is lifted up through the lifting oil cylinder after one cleaning, the machine body is pulled back to the original position through the coal mining machine, the cleaning range of the coal shoveling mechanism is adjusted through the telescopic oil cylinder, and the accumulated coal is cleaned up again until it is completely cleaned up; the telescopic oil cylinder can adjust the cleaning range, which is convenient for adjusting the cleaning range according to different working face conditions and actual changes of the same working face, the lifting oil cylinder can adjust the height of the plow-shaped coal shoveling head and then adjust the shoveling strength and depth, and the cleaning operation is fast and efficient; the double connecting plates are used to support and connect the plow-shaped coal shoveling head, the double lifting oil cylinders are used to control the lifting of the plow-shaped coal shoveling head, the coal shoveling mechanism has good structural strength, the connection strength between the coal shoveling mechanism and the machine body is high, and the plow-shaped coal shoveling head moves stably up and down. Through the above process, the accumulated coal is quickly shovelled into the chute of the scraper conveyor by the plow-shaped coal shoveling head when the coal mining machine moves, so that the accumulated coal is transported away through the scraper conveyor, the accumulated coal is quickly cleaned up by the machine, the labor intensity is effectively reduced, the cleaning efficiency and operation safety are greatly improved, the safety of the personnel is effectively ensured, and in addition, the present application does not have a separate power walking device, has a simple structure, a small size and a small weight, is convenient to install and unload, has strong adaptability, and has a low manufacturing cost.

[0008] Further, the plow-shaped coal shoveling head is used to extend above the scraper conveyor, a slot side notch is arranged on the slot side of the plow-shaped coal shoveling head close to the scraper conveyor, and a avoiding notch is arranged on the shoveling plate of the plow-shaped coal shoveling head close to the side of the scraper conveyor.

[0009] Beneficial effect: the plow type coal shovel head shape structure is matched with the outer shape of the scraper conveyor, the coal shoveling mechanism is compactly attached to the position of the scraper conveyor, so that the accumulated coal can fall into the chute of the scraper conveyor as much as possible, and the coal cleaning operation is not easy to have dead angles.

[0010] Further, the coal mine fully mechanized working face final mining coal cleaning device further comprises a hydraulic system for controlling actions of the telescopic oil cylinder and the lifting oil cylinder, the hydraulic system comprising a controller, a main valve, a driver, a remote controller and a hydraulic pipeline, and the hydraulic system is used for being connected with a coal mining machine oil pump or a working face pump station system.

[0011] Beneficial effect: the hydraulic power source of the telescopic oil cylinder and the lifting oil cylinder is derived from the coal mining machine oil pump or the working face pump station system, the coal cleaning device has small self weight and simple structure.

[0012] Further, the machine body traction structure is a lifting ring.

[0013] Beneficial effect: the traction connection between the machine body and the coal mining machine can be quickly and firmly realized through the lifting ring and the chain. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a device distribution schematic diagram of a fully mechanized working face final mining stage;

[0015] Figure 2 is a front view of a specific embodiment 1 of a coal mine fully mechanized working face final mining coal cleaning device of the present application;

[0016] Figure 3 is Figure 2 a top view of the coal mine fully mechanized working face final mining coal cleaning device;

[0017] Figure 4 is Figure 2 a left view of the coal mine fully mechanized working face final mining coal cleaning device;

[0018] Figure 5 is Figure 2 a rear view of the coal mine fully mechanized working face final mining coal cleaning device;

[0019] Figure 6 is a schematic diagram of a specific embodiment 1 of a coal mine fully mechanized working face final mining coal cleaning device of the present application from the front side in a use state;

[0020] Figure 7 is a schematic diagram of a specific embodiment 1 of a coal mine fully mechanized working face final mining coal cleaning device of the present application from the upper side in a use state;

[0021] Figure 8 is a schematic diagram of a specific embodiment 1 of a coal mine fully mechanized working face final mining coal cleaning device of the present application from the side in a use state;

[0022] Attached reference numerals: 1-Working face support; 2-Stacked support; 3-Coal mining machine; 4-Scraper conveyor; A-Coal cleaning area; B-Net laying area; 5-Machine frame; 6-Telescopic frame; 61-Lifting ear plate; 7-Shoveling mechanism; 71-Connecting plate; 72-Plow-type shovel head; 721-Side notch; 722-Avoidance notch; 8-Telescopic cylinder; 9-Lifting cylinder; 10-Supporting slipper; 11-Guide slipper; 12-Lifting ring; 13-Scraper conveyor pin row; 14-Scraper conveyor shovel plate; 15-Scraper conveyor chute. Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] Specific embodiment 1 of the coal cleaning device for the final stage of fully mechanized coal mining face of the present invention:

[0025] First, the specific implementation scenarios of the present invention will be introduced, such as... Figure 1 As shown, in the final stage of the fully mechanized mining face, the working face is provided with a working face support 1, a stack support 2, a coal mining machine 3, and a scraper conveyor 4. There is a netting area B on top, and there is a coal-to-cleaning area A between the stack support 2 and the scraper conveyor 4. The main purpose of this invention is to quickly clean the coal-to-cleaning area A.

[0026] like Figures 2-5 As shown, the coal cleaning device for the end of the fully mechanized mining face in this coal mine mainly consists of a machine body, a telescopic frame 6, a coal shoveling mechanism 7, a telescopic cylinder 8, and a lifting cylinder 9. The machine body includes a hollow machine frame 5 and support slippers 10 and guide slippers 11 located at the bottom of the machine frame 5. The machine frame 5 serves as the main support skeleton of the machine body, and the support slippers 10 and guide slippers 11 are respectively located on both sides of the lower end of the machine frame 5. Figures 6-8 As shown, the support slipper 10 is used to support the upper surface of the scraper conveyor's coal shovel plate 14 and can slide relative to the scraper conveyor's coal shovel plate 14. The guide slipper 11 is slidably guided by the scraper conveyor's pin row 13. The movement of the machine body of this invention is achieved by a coal mining machine, wherein the machine body frame 5 is provided with... Figure 5 The lifting ring 12 shown is used to connect the machine frame 5 to the coal mining machine via the lifting ring 12 and chain during installation. The lifting ring 12 constitutes the traction structure in this embodiment. In other embodiments, the traction structure can also be a hook, etc. During operation, the coal mining machine can either directly contact the top pusher body and move along the scraper conveyor, or it can pull the machine body to move in the opposite direction along the scraper conveyor via the chain.

[0027] One end of the telescopic frame 6 extends into the machine frame 5 and can slide back and forth relative to the machine frame 5. The coal shoveling mechanism 7 is mounted on the telescopic frame 6, and the telescopic cylinder 8 is used to drive the telescopic frame 6 and the coal shoveling mechanism 7 to move back and forth together. The telescopic cylinder 8 is located above the machine body, with its bottom end hinged to the machine frame 5 and its piston rod end hinged to the telescopic cylinder 8. The coal shoveling mechanism 7 includes two connecting plates 71 and a plow-shaped coal shovel head 72 fixed to the end of the connecting plates 71. The connecting plates 71 extend laterally, i.e., in the direction of the working face width. One end of the connecting plate 71 is hinged to the telescopic frame 6, and the other end is fixed to the plow-shaped coal shovel head 72. Two lifting cylinders 9 are provided to control the lifting / lowering of the plow-shaped coal shovel head. The telescopic frame 6 has a downwardly extending lifting ear plate 61 on its lower side. The lifting cylinder 9 is located below the connecting plate 71. The bottom end of the lifting cylinder 9 is hinged to the lifting ear plate 61, and the piston rod end of the lifting cylinder 6 is hinged to the lower side of the connecting plate 71.

[0028] like Figure 7 As shown, the two connecting plates 71 are of different lengths, with the connecting plate closer to the scraper conveyor being shorter, so that the plow-shaped coal shovel head 72 is inclined towards the scraper conveyor. During the movement of the machine and the coal mining machine, the plow-shaped coal shovel head 72 throws the accumulated coal into the scraper conveyor chute 15, so that the scraper conveyor can transport the accumulated coal away. In order to throw as much coal as possible into the scraper conveyor chute 15 and reduce cleaning dead corners, the plow-shaped coal shovel head 72 extends above the scraper conveyor. The side of the plow-shaped coal shovel head 72 near the scraper conveyor is provided with a side notch 721 that matches the shape of the scraper conveyor. The shovel blade of the plow-shaped coal shovel head 72 near the scraper conveyor is provided with an avoidance notch 722 that matches the shape of the scraper conveyor.

[0029] The present invention also includes a hydraulic system for controlling the action of each cylinder. The hydraulic system includes a controller, a main valve, a driver, a remote controller, and hydraulic lines, and is connected to the coal mining machine oil pump or the working face pump station system. The coal mining machine oil pump or the working face pump station system supplies hydraulic oil to drive the lifting cylinder and the telescopic cylinder.

[0030] When using this invention: After the fully mechanized mining face has advanced to the final mining stage and the top mesh laying operation has been completed, install this invention, as follows: Figures 6-8As shown, the support shoe 10 is supported on the scraper conveyor's coal shovel plate 14, and the guide shoe 11 is slidably guided by the scraper conveyor's pin row 13. A chain connects the lifting ring to the coal mining machine, completing the connection between the coal mining machine and the machine frame. The coal mining machine drives the machine body and the plow-shaped coal shovel head to move. The plow-shaped coal shovel head turns over the accumulated coal and throws it onto the scraper conveyor. After cleaning once, the lifting cylinder 9 is controlled to lift the plow-shaped coal shovel head, and the coal mining machine pulls the plow-shaped coal shovel head back to its original position. The front and rear positions of the plow-shaped coal shovel head are adjusted by the telescopic cylinder 8, thereby adjusting the cleaning range. The coal mining machine pushes the machine body to clean again until the accumulated coal in the area to be cleaned is completely removed. In summary, during use, the height and front and rear positions of the plow-shaped coal shovel head can be adjusted by the lifting cylinder and the telescopic cylinder, respectively, thereby flexibly adjusting the coal cleaning depth and range to achieve the purpose of fast and thorough coal cleaning. By replacing manual coal cleaning with mechanized means, not only can the intensity of manual labor be reduced, but the coal cleaning efficiency and operational safety can also be significantly improved. In addition, the coal cleaning device at the end of the longwall mining face of this coal mine is not equipped with a separate power walking device and hydraulic power mechanism. It cleverly uses the coal mining machine for movement and is supplied with hydraulic oil by the coal mining machine oil pump or the working face pump station system. This simplifies its own structure, reduces its own weight and size, facilitates installation and disassembly, and reduces manufacturing costs.

[0031] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A coal cleaning device for the final stage of fully mechanized coal mining faces, characterized in that, It mainly consists of a body, a telescopic frame, a coal shoveling mechanism, telescopic cylinders, and lifting cylinders. The body includes a body frame, guide shoes, and support shoes. The body frame is hollow inside. The guide shoes and support shoes are located at the lower end of the body frame. The support shoes are used to support the upper surface of the scraper conveyor's coal shoveling plate and slide in cooperation with the scraper conveyor's coal shoveling plate. The guide shoes are used to slide and guide the scraper conveyor's pins. The body frame is equipped with lifting rings for connecting to the coal mining machine. During use, the body is pushed or pulled by the coal mining machine and moves relative to the scraper conveyor. The body frame is connected to the coal mining machine for traction through the lifting rings and chains. One end of the telescopic frame extends into the machine body frame and slides in a guide-sliding manner with the machine body frame in the front-back direction. The coal shoveling mechanism is located on the telescopic frame and includes a plow-shaped coal shovel head and two connecting plates. The connecting plates extend along the width of the working face. One end of the connecting plate is hinged to the telescopic frame and the other end is connected to the plow-shaped coal shovel head. The two ends of the telescopic cylinder are respectively hinged to the machine body frame and the telescopic frame, and are used to drive the telescopic frame and the coal shoveling mechanism to move back and forth. The telescopic frame has a downwardly extending lifting ear plate on its lower side. There are two lifting cylinders. The lower end of the lifting cylinder is hinged to the lifting ear plate and the upper end is hinged to the lower side of the connecting plate. The lifting cylinder is used to drive the plow-shaped coal shovel head to lift or lower. During the movement of the machine body, the plow-shaped coal shovel head is used to turn over the accumulated coal and throw it into the chute of the scraper conveyor. The plow-shaped coal shovel head is used to extend above the scraper conveyor. The chute side notch is provided on the side of the plow-shaped coal shovel head near the scraper conveyor. The shovel blade of the plow-shaped coal shovel head has an avoidance notch on the side near the scraper conveyor. It also includes a hydraulic system for controlling the movement of the telescopic cylinder and the lifting cylinder. The hydraulic system includes a controller, a main valve, a driver, a remote control, and hydraulic lines. The hydraulic system is used to connect to the coal mining machine oil pump or the working face pump station system.

Images