Downhole rapid filling and waste rock throwing scraper conveyer

Abstract

An underground rapid filling and gangue throwing scraper conveyer comprises a rack, an upper scraper conveyer body and a lower scraper conveyer body, and the upper scraper conveyer body and the lower scraper conveyer body are each provided with a motor used for driving the upper scraper conveyer body and the lower scraper conveyer body to operate; the machine frame is divided into an upper layer and a lower layer, the upper scraper conveyor is fixedly installed on the upper layer of the machine frame, and the lower scraper conveyor is installed on the lower layer of the machine frame and can integrally move forwards or backwards on the machine frame in the running direction of the machine frame. During gangue throwing and filling operation, the lower scraper conveyor moves forwards, and the front end of the lower scraper conveyor exceeds the front end of the upper scraper conveyor by a certain distance, so that gangue thrown out from the front end of the upper scraper conveyor falls onto the lower scraper conveyor and is finally thrown out from the front end of the lower scraper conveyor. The filling efficiency is obviously improved, and the problem that the speed of the coal mining process and the speed of the filling process are not matched is solved.

Description

Technical Field

[0001] The present invention relates to an underground rapid filling and waste rock throwing scraper conveyor. Background Art

[0002] Coal mine filling mining is an important way to realize green mining in coal mines. It can not only solve a large amount of waste rock generated in coal mine production, but also liberate a large amount of coal under buildings, railways and water bodies, which is of great significance to public environmental protection and the improvement of the benefits of coal mine enterprises. At present, the technology adopted in coal mine filling mining is: hanging a scraper conveyor behind the filling support, and using the holes in the bottom trough plate of the scraper conveyor to leak waste rock into the goaf. This technology has disadvantages such as slow waste rock leakage and low efficiency, and sometimes even plugging of holes occurs, directly resulting in the stopping of the shearer for waiting. Based on the problem of the mismatch in the speeds of the two processes of coal mining and filling, the overall benefit of the working face is affected. Summary of the Invention

[0003] The present invention provides an underground rapid filling and waste rock throwing scraper conveyor to solve the problems of non-synchronous operation and low efficiency in coal mining and waste rock leakage in the current filling technology, and to realize the integrated mobile operation of waste rock transportation, waste rock throwing and hydraulic support.

[0004] The technical solution adopted by the present invention is as follows: An underground rapid filling and waste rock throwing scraper conveyor includes a frame, an upper scraper conveyor and a lower scraper conveyor. The upper scraper conveyor and the lower scraper conveyor are both equipped with motors for driving the upper scraper conveyor and the lower scraper conveyor to operate; The frame is divided into upper and lower layers. The upper scraper conveyor is fixedly installed on the upper layer of the frame, and the lower scraper conveyor is installed on the lower layer of the frame and can move forward or backward integrally along the running direction of the lower scraper conveyor on the frame; during waste rock throwing and filling operations, the lower scraper conveyor moves forward, and the front end of the lower scraper conveyor extends beyond the front end of the upper scraper conveyor by a certain distance, so that the waste rock thrown from the front end of the upper scraper conveyor falls onto the lower scraper conveyor and is finally thrown from the front end of the lower scraper conveyor.

[0005] In the above underground rapid filling and waste rock throwing scraper conveyor, a chute and a tooth rail are arranged at the bottom of the lower scraper conveyor, and a slide rail, a gear and a gear driving motor are installed on the lower layer of the frame; the chute is matched with the slide rail, so that the lower scraper conveyor can slide on the frame; the tooth rail meshes with the gear on the lower layer of the frame, and under the drive of the gear driving motor, the lower scraper conveyor is controlled to slide forward or backward integrally along the running direction of the lower scraper conveyor on the lower layer of the frame.

[0006] In the above-mentioned underground rapid filling and waste-discharging scraper conveyor, a steel wire rope is connected to the rear end of the lower scraper conveyor. The steel wire rope bypasses a roller fixed on the frame and is connected to a counterweight. The counterweight can slide up and down in the counterweight box.

[0007] In the above-mentioned underground rapid filling and waste-discharging scraper conveyor, the frame is supported by a number of hydraulic columns. The piston rod of the hydraulic column is connected to the lower layer of the frame, and the cylinder end is connected to the base.

[0008] In the above-mentioned underground rapid filling and waste-discharging scraper conveyor, the hydraulic columns are arranged at certain intervals to support the frame, and a group of two hydraulic columns are arranged on each base.

[0009] In the above-mentioned underground rapid filling and waste-discharging scraper conveyor, a mobile hydraulic cylinder is installed in each base. The piston rod of the mobile hydraulic cylinder is hinged to the front hydraulic support.

[0010] In the above-mentioned underground rapid filling and waste-discharging scraper conveyor, the upper scraper conveyor is lapped with the upper end of the corrugated baffle belt conveyor, and the lower end of the corrugated baffle belt conveyor is lapped with the right-angle turning scraper conveyor.

[0011] When the present invention performs waste-discharging and filling operations, the waste rock is first transported through the right-angle turning scraper conveyor in the return airway, transported to the corrugated baffle belt conveyor, and then lifted and transported to the upper scraper conveyor by it. The gear drive motor is started to make the gear rotate. The tooth rail on the lower scraper conveyor meshes with the gear on the lower layer of the frame to drive the lower scraper conveyor to move out on the slide rail. At the same time, the steel wire rope connected to it bypasses the fixed roller to lift the counterweight to maintain the balance of the lower scraper conveyor. The waste rock is transported by the upper scraper conveyor and then falls onto the scraper of the lower scraper conveyor. The waste rock that is secondarily accelerated by the lower scraper conveyor is thrown into the goaf at a certain speed for filling. According to the actual operation situation, the hydraulic columns supporting the frame can be lifted and adjusted in height, and the hydraulic columns from the front end to the tail end of the lower scraper conveyor form a height gradient difference to adjust the waste-discharging angle. When the hydraulic support moves forward in the working face direction, the connected mobile hydraulic cylinder starts to expand and contract, and the frame, the upper and lower scraper conveyors, the hydraulic columns and the base move longitudinally to the next working position.

[0012] The present invention has the following advantages compared with the prior art: The underground rapid filling and waste-discharging scraper conveyor provided by the present invention realizes filling by discharging waste through the upper and lower scraper conveyors, and there will be no problem of waste leakage or even hole blockage. Therefore, the filling efficiency of the present invention is significantly improved, and the problem of the speed mismatch between the two processes of coal mining and filling is solved.

[0013] The underground rapid filling and waste rock throwing scraper conveyor provided by the present invention adjusts the filling distance through the telescopic adjustment of the lower scraper conveyor, controls the throwing speed of the waste rock by adjusting the speed difference between the upper and lower scraper conveyors, and adjusts the angle of the whole machine upward or downward by setting the height difference of the row of supporting hydraulic columns from the front end to the rear end of the frame, thereby adjusting the angle of waste rock throwing. Therefore, the present invention can expand the filling range and improve the filling effect.

[0014] The underground rapid filling and waste rock throwing scraper conveyor provided by the present invention installs the upper and lower scraper conveyors on the frame, and the frame is connected to the hydraulic support through hydraulic columns. Therefore, the present invention realizes the integrated operation of transporting waste rock, throwing waste rock, and moving the hydraulic support. Brief Description of the Drawings

[0015] In order to make the content of the invention easier to be clearly understood, the present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 It is the front view of the underground rapid filling and waste rock throwing scraper conveyor of the present invention; Figure 2 It is the side view of the underground rapid filling and waste rock throwing scraper conveyor of the present invention; Figure 3 It is the layout schematic diagram of the underground rapid filling and waste rock throwing scraper conveyor of the present invention in the working face; Figure 4 It is the underground rapid filling and waste rock throwing scraper conveyor of the present invention Figure 3 The sectional view taken along the line A-A in it; Figure 5 It is the underground rapid filling and waste rock throwing scraper conveyor of the present invention Figure 3 The sectional view taken along the line B-B in it.

[0017] The marks in the figure are: 1. Frame, 2. Upper scraper conveyor, 3. Lower scraper conveyor, 4. Motor, 5. Slide groove, 6. Tooth rail, 7. Slide rail, 8. Gear, 9. Gear drive motor, 10. Hydraulic column, 11. Base, 12. Mobile hydraulic cylinder, 13. Counterweight box, 14. Counterweight block, 15. Drum, 16. Steel wire rope, 17. Return airway, 18. Right-angle turning scraper conveyor, 19. Wavy baffle belt conveyor, 20. Hydraulic support, 21. Shearer. Detailed Embodiments

[0018] To make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the drawings.

[0019] Figures 1-5 It is the preferred embodiment of the underground rapid filling and waste rock throwing scraper conveyor of the present invention.

[0020] The underground rapid filling and waste-discharging scraper conveyor includes a frame 1, an upper scraper conveyor 2 and a lower scraper conveyor 3. The upper scraper conveyor 2 and the lower scraper conveyor 3 are both equipped with motors 4 for driving the upper scraper conveyor 2 and the lower scraper conveyor 3 to operate. The frame 1 is divided into upper and lower layers. The upper scraper conveyor 2 is fixedly installed on the upper layer of the frame 1, and the lower scraper conveyor 3 is installed on the lower layer of the frame 1 and can move forward or backward as a whole along the running direction of the lower scraper conveyor 3 on the frame 1. During the waste-discharging and filling operation, the lower scraper conveyor 3 moves forward, and the front end of the lower scraper conveyor 3 extends beyond the front end of the upper scraper conveyor 2 by a certain distance, so that the waste rock thrown out from the front end of the upper scraper conveyor 2 falls onto the lower scraper conveyor 3 and is finally thrown out from the front end of the lower scraper conveyor 3.

[0021] In this embodiment, a chute 5 and a toothed rail 6 are arranged at the bottom of the lower scraper conveyor 3. A slide rail 7, a gear 8 and a gear driving motor 9 are installed on the lower layer of the frame 1. The chute 5 is matched with the slide rail 7, so that the scraper conveyor 3 can slide on the frame 1. The toothed rail 6 meshes with the gear 8 on the lower layer of the frame 1, and under the drive of the gear driving motor 9, the scraper conveyor 3 is controlled to slide forward or backward as a whole along the running direction of the scraper conveyor 3 on the lower layer of the frame 1.

[0022] In this embodiment, a steel wire rope 16 is connected to the rear end of the lower scraper conveyor 2. The steel wire rope 16 bypasses a drum 15 fixed on the frame 1 and is connected to a counterweight 14. The counterweight 14 can slide up and down in a counterweight box 13.

[0023] In this embodiment, the frame 1 is supported by a number of hydraulic columns 10. The piston rod of the hydraulic column 10 is connected to the lower layer of the frame 1, and the cylinder end is connected to a base 11.

[0024] In this embodiment, the hydraulic columns 10 are arranged at a certain interval to support the frame 1, and a group of two hydraulic columns 10 are arranged on each base 11.

[0025] In this embodiment, a mobile hydraulic cylinder 12 is installed in each base 11. The piston rod of the mobile hydraulic cylinder 12 is hinged to the front hydraulic support 20.

[0026] In this embodiment, the upper scraper conveyor 2 is lapped with the upper end of a corrugated baffle belt conveyor 19, and the lower end of the corrugated baffle belt conveyor 19 is lapped with a right-angle turning scraper conveyor 18.

[0027] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A rapid underground filling and waste-discharging scraper conveyor, characterized in that: It includes a frame (1), an upper scraper conveyor (2) and a lower scraper conveyor (3). Both the upper scraper conveyor (2) and the lower scraper conveyor (3) are equipped with motors (4) for driving the upper scraper conveyor (2) and the lower scraper conveyor (3) to operate; The frame (1) is divided into upper and lower layers. The upper scraper conveyor (2) is fixedly installed on the upper layer of the frame (1), and the lower scraper conveyor (3) is installed on the lower layer of the frame (1) and can move forward or backward as a whole along the running direction of the lower scraper conveyor (3) on the frame (1); During the operation of waste rock filling, the lower scraper conveyor (3) moves forward, and the front end of the lower scraper conveyor (3) extends beyond the front end of the upper scraper conveyor (2) by a certain distance, so that the waste rock thrown out from the front end of the upper scraper conveyor (2) falls onto the lower scraper conveyor (3) and is finally thrown out from the front end of the lower scraper conveyor (3).

2. The underground rapid filling and waste-discharging scraper conveyor according to claim 1, wherein: A chute (5) and a toothed rail (6) are arranged at the bottom of the lower scraper conveyor (3). A slide rail (7), a gear (8) and a gear driving motor (9) are installed on the lower layer of the frame (1); The chute (5) is matched with the slide rail (7) so that the lower scraper conveyor (3) can slide on the frame (1); The toothed rail (6) meshes with the gear (8) on the lower layer of the frame (1). Driven by the gear driving motor (9), the lower scraper conveyor (3) is controlled to slide forward or backward as a whole along the running direction of the lower scraper conveyor (3) on the lower layer of the frame (1).

3. A downhole rapid filling and waste-discharging scraper conveyor according to claim 1 or 2, characterized in that: A steel wire rope (16) is connected to the rear end of the lower scraper conveyor (2). The steel wire rope (16) bypasses a drum (15) fixed on the frame (1) and is connected to a counterweight block (14). The counterweight block (14) can slide up and down in a counterweight box (13).

4. A downhole rapid filling and waste rock throwing scraper conveyor according to claim 1 or 2, characterized in that: The frame (1) is supported by a number of hydraulic columns (10). The piston rod of the hydraulic column (10) is connected to the lower layer of the frame (1), and the cylinder end is connected to a base (11).

5. A downhole rapid filling and waste-discharging scraper conveyor according to claim 4, characterized in that: The hydraulic columns (10) are arranged at a certain interval to support the frame (1). A group of two hydraulic columns (10) is arranged on each base (11).

6. The downhole rapid filling and waste rock throwing scraper conveyor according to claim 5, characterized in that: A mobile hydraulic cylinder (12) is installed in each base (11). The piston rod of the mobile hydraulic cylinder (12) is hinged to the front hydraulic support (20).

7. A downhole rapid filling and waste rock throwing scraper conveyor according to claim 1 or 2, characterized in that: The upper scraper conveyor (2) is lapped with the upper end of a corrugated baffle belt conveyor (19), and the lower end of the corrugated baffle belt conveyor (19) is lapped with a right-angle turning scraper conveyor (18).

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