A hydraulic support for waste rock filling mining

Abstract

The present invention discloses a hydraulic support for waste rock filling mining, comprising a base, a connecting rod mechanism, a support platform, a plurality of front columns, and a plurality of rear columns are arranged on the base, a top beam is arranged on the upper ends of the plurality of front columns and the rear columns, a shielding beam is hinged at the rear end of the top beam, and the shielding beam is connected to the connecting rod mechanism; the support platform is located between the front columns and the rear columns, a waste rock belt machine is arranged between the lower part of the support platform and the base, the horizontal section of the waste rock belt machine is placed under the support platform, and the inclined section of the waste rock belt machine passes through the rear column and the connecting rod mechanism and then extends into the shielding beam. The hydraulic support for waste rock filling mining solves the problems of the existing waste rock filling support, such as difficulty in supporting heavy filling scraper conveyors, long support top beams, low support strength, easy swaying of the scraper conveyors when the support is pulled, and low safety when the suspension type is adopted.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine filling mining support equipment, and in particular relates to a hydraulic support for coal mine filling mining. Background Art

[0002] At present, the solid wastes such as gangue, coal slime, fly ash, and waste residues produced in coal chemical production in my country during coal mining, washing, and power generation are generally piled on the ground. These solid wastes occupy land and pollute the environment. The filling coal mining method that uses the working face goaf to dispose of coal gangue can not only reduce the discharge of solid waste in coal mines, but also reduce mining subsidence disasters and improve the resource recovery rate of mines. It is one of the key technical approaches to achieve green mining in coal mines. Gangue filling mining will become a new coal mining technology, but at present, conventional gangue filling mining in China mostly uses filling mining hydraulic support + suspended bottom unloading filling scraper conveyor for filling, which is based on fixed production, resulting in the impact of coal mining output. The annual output of conventional gangue filling working face is 500,000-600,000 tons / year. For modern large-scale mines and mines with large annual gangue output, it is difficult to meet the needs due to the influence of filling support and filling scraper conveyor equipment. It is necessary to develop a hydraulic support that can quickly and efficiently fill gangue.

[0003] There is a hydraulic support for comprehensive mining and waste rock filling, with the application number "CN202020843970.9". This type of support can throw waste rock into the goaf to realize waste rock filling mining, but there are the following problems: (1) Considering the influence of the weight of the scraper conveyor suspended on the top beam of the rear of the filling support on the stability of the top beam, this type of waste rock filling support can generally only suspend a light scraper conveyor under the tail beam. The scraper conveyor has a small trough width and a small capacity for transporting filling materials, resulting in a small waste rock filling capacity; (2) This type of waste rock filling support generally adopts a four-column split top beam structure. The filling scraper conveyor and waste rock belt conveyor are arranged at the rear of the top beam, and the four-link rod is arranged between the front and rear columns of the support. This makes the total length of the support top beam too long, generally more than 8m, and the support strength is generally low, less than 1MPa. At the same time, the support transportation, installation, and withdrawal are more difficult; (3) During mining and filling operations, the support frame will cause the rear scraper conveyor to sway and twist, thereby affecting the parallel operation of mining and filling. (4) The filling scraper conveyor is suspended at the end of the top beam and is adjacent to the goaf, which brings safety hazards to the maintenance of the filling scraper conveyor. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic support for waste rock filling mining to solve the problems of existing waste rock filling supports, such as difficulty in supporting heavy filling scraper conveyors, long support top beams, low support strength, easy swinging of the scraper conveyors when pulling the supports, and low safety due to the use of suspended supports.

[0005] In order to solve the above technical problems, the present invention discloses a hydraulic support for waste rock filling mining, comprising a base, on which a connecting rod mechanism, a support platform, a plurality of front columns, and a plurality of rear columns are arranged, and a top beam is arranged at the upper ends of the plurality of front columns and the rear columns, and a shielding beam is hinged at the rear end of the top beam, and the shielding beam is connected to the connecting rod mechanism; the support platform is located between the front columns and the rear columns, and a waste rock throwing belt machine is arranged between the lower part of the support platform and the base, and the horizontal section of the waste rock throwing belt machine is placed under the support platform, and the inclined section of the waste rock throwing belt machine passes through the rear column and the connecting rod mechanism and extends into the shielding beam.

[0006] The technical solution of the present invention also has the following characteristics:

[0007] As a further improvement of the technical solution of the present invention, a reciprocating drive mechanism is arranged in the shield beam, and a plug plate is arranged at the driving end of the reciprocating drive mechanism.

[0008] As a further improvement of the technical solution of the present invention, the gangue throwing belt machine includes a frame, on which a driving roller, a passive roller, a support roller and a material baffle are provided, a conveyor belt is arranged between the driving roller and the passive roller, and the material baffle is located on both sides of the conveyor belt.

[0009] As a further improvement of the technical solution of the present invention, the angle of the inclined section of the gangue throwing belt machine is adjustable, and the inclination angle is 5°-45°.

[0010] As a further improvement of the technical solution of the present invention, a telescopic beam is provided at the front end of the top beam, and a guard plate is hinged on the lower side of the telescopic beam.

[0011] Compared with the prior art, the technical effects of the present invention are as follows: (1) A gangue filling hydraulic support of the present invention, wherein a porous bottom-discharging scraper conveyor is arranged on a support platform in the middle of the front and rear columns of the supporting shielding support, and the porous bottom-discharging scraper conveyor can move forward and backward on the support platform, thereby realizing parallel operation of coal mining and filling. At the same time, a heavy-duty bottom-discharging scraper conveyor can be used, which has a large transportation capacity and a high filling capacity, thereby meeting the requirements of large-scale filling and mining in large modern mines; (2) A gangue filling hydraulic support of the present invention, wherein a bottom-discharging filling scraper conveyor is arranged on the support platform, and a gangue belt conveyor is arranged under the support platform. The belt conveyor crosses the two rear columns and the four-bar driving mechanism and extends into the shielding beam. The gangue on the filling scraper conveyor passes through the scraper groove. The gangue discharge port on the support falls into the gangue throwing belt conveyor, and the gangue is thrown into the goaf by the high-speed operation of the gangue throwing belt conveyor, thereby realizing the gangue throwing and filling from the bottom discharge scraper conveyor to the goaf. At the same time, the entire belt conveyor is located inside the support, and the operation and maintenance are safe and reliable; (3) The present invention is a gangue filling hydraulic support, and a retractable plug plate is arranged on the shield beam. When the gangue filling is carried out, the plug plate is extended to create space for the gangue filling; (4) The present invention is a gangue filling hydraulic support, which adopts a four-column support shielding support + a filling scraper conveyor arranged inside the support + a gangue throwing belt conveyor structure. Compared with the traditional gangue filling support structure, the overall length of the support can be greatly shortened, thereby improving the support strength and stability of the support and reducing the weight of the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 It is a structural schematic diagram of a hydraulic support for waste rock filling mining according to the present invention;

[0014] Figure 2 The invention discloses a top view of a hydraulic support for waste rock filling mining.

[0015] In the figure, 1. base, 2. support platform, 3. front column, 4. guard plate, 5. telescopic beam, 6. top beam, 7. shield beam, 8. reciprocating drive mechanism, 9. plug plate, 10. connecting rod mechanism, 11. porous bottom discharge scraper conveyor, 12. waste rock belt conveyor, 12-1. horizontal section of waste rock belt conveyor, 12-2. inclined section of waste rock belt conveyor, 12-3. frame, 12-4. active roller, 12-5. passive roller, 12-6. roller, 12-7. conveyor belt, 12-8. material baffle plate, 13. rear column. DETAILED DESCRIPTION

[0016] The following will describe the implementation methods of the present invention in detail with reference to examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0017] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0019] like Figure 1 and Figure 2 As shown, the present invention discloses a hydraulic support for waste rock filling mining, comprising a base 1, on which a connecting rod mechanism 10, a support platform 2, a plurality of front columns 3, and a plurality of rear columns 13 are arranged, and a top beam 6 is arranged at the upper ends of the plurality of front columns 3 and the rear columns 13, and a shielding beam 7 is hinged at the rear end of the top beam 6, and the shielding beam 7 is connected to the connecting rod mechanism 10; the support platform 2 is located between the front columns 3 and the rear columns 13, and a waste rock throwing belt machine 12 is arranged between the lower part of the support platform 2 and the base 1, and a horizontal section 12-1 of the waste rock throwing belt machine 12 is placed under the support platform 2, and an inclined section 12-2 of the waste rock throwing belt machine 12 passes through the rear column 13 and the connecting rod mechanism 10 and then extends into the shielding beam 7.

[0020] A plurality of hydraulic supports for gangue filling mining of the present invention are arranged on the filling coal mining working face. During filling mining, the gangue is transferred to the porous bottom discharge scraper conveyor 11 of the gangue filling support through the gangue conveyor belt conveyor of the gangue conveyor chute of the working face. At this time, the gangue discharge port of the bottom discharge scraper conveyor 11 is opened, and the gangue falls into the gangue conveyor belt conveyor 12. The gangue conveyor belt conveyor 12 runs rapidly to throw the gangue into the goaf behind the support. Since the support platform is arranged on the base, it is not affected by the lowering and moving of the support. Therefore, the gangue filling of the filling scraper conveyor is not affected by the lowering and moving of the support, thereby realizing parallel operation of coal mining and filling. At the same time, the support structure greatly shortens the length of the top beam, thereby improving the support strength and stability of the support and reducing the weight of the support.

[0021] like Figure 1 As shown, in a gangue filling hydraulic support of the present invention, the gangue throwing belt machine comprises a frame 12-3, on which a driving roller 12-4, a passive roller 12-5, a support roller 12-6 and a material baffle plate 12-8 are arranged, a conveyor belt 12-7 is arranged between the driving roller 12-4 and the passive roller 12-5, and the material baffle plate 12-8 is located on both sides of the conveyor belt 12-7. During filling, the driving roller and the passive roller drive the conveyor belt to run quickly, throwing the gangue into the goaf, and the material baffle plate can effectively prevent the gangue from spilling. The entire gangue throwing belt machine is located inside the support, and the operation and maintenance are safe and reliable.

[0022] like Figure 1 As shown, in a waste rock filling hydraulic support of the present invention, a reciprocating drive mechanism 8 is arranged inside the shielding beam 7, and a plug plate 9 is arranged at the driving end of the reciprocating drive mechanism 8. When waste rock filling is carried out, the plug plate 9 inside the shielding beam 7 extends out to create space for waste rock filling.

[0023] like Figure 1 As shown, in a waste rock filling hydraulic support of the present invention, the angle of the inclined section 12-2 of the waste rock belt conveyor 12 is adjustable, and its inclination angle is 5°-45°. When the height of the support changes, the angle of the inclined section is adjusted to make the shape of the waste rock belt conveyor adapt to the shape of the protective beam to avoid being pressed by the protective beam.

[0024] like Figure 1 As shown, in a waste rock filling hydraulic support of the present invention, a telescopic beam 5 is provided at the front end of the top beam 6, and a guard plate 4 is hinged at the lower side of the telescopic beam 5. The telescopic beam 5 can temporarily support the top plate to prevent the waste rock from falling from the top plate, and the guard plate can temporarily support the coal wall to prevent the coal wall from peeling.

[0025] The above description shows and describes several preferred embodiments of the invention, but as mentioned above, it should be understood that the invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and modifications made by those skilled in the art should be within the scope of protection of the claims attached to the invention without departing from the spirit and scope of the invention.

Claims

1. A hydraulic support for waste rock filling mining, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a connecting rod mechanism (10), a support platform (2), a plurality of front columns (3), and a plurality of rear columns (13); a top beam (6) is provided at the upper ends of the plurality of front columns (3) and the rear columns (13); a shielding beam (7) is hingedly connected to the rear end of the top beam (6); and the shielding beam (7) is connected to the connecting rod mechanism (10); the support platform (2) is located between the front columns (3) and the rear columns (13); a slag-throwing belt machine (12) is arranged between the bottom of the support platform (2) and the base (1); a horizontal section (12-1) of the slag-throwing belt machine (12) is placed under the support platform (2); and the slag-throwing belt machine (12) is provided at the bottom of the support platform (2). The inclined section (12-2) of the conveyor belt (12) passes through the rear column (13) and the connecting rod mechanism (10) and then extends into the shielding beam (7); a reciprocating drive mechanism (8) is arranged in the shielding beam (7), and a plug plate (9) is arranged at the driving end of the reciprocating drive mechanism (8); the gangue belt conveyor (12) comprises a frame (12-3), on which a driving roller (12-4), a passive roller (12-5), a supporting roller (12-6) and a material baffle plate (12-8) are arranged, a conveyor belt (12-7) is arranged between the driving roller (12-4) and the passive roller (12-5), and the material baffle plate (12-8) is located on both sides of the conveyor belt (12-7).

2. The hydraulic support for waste rock filling mining according to claim 1 is characterized in that: The angle of the inclined section (12-2) of the gangue throwing belt machine (12) is adjustable, and the inclination angle is 5°-45°.

3. The hydraulic support for waste rock filling mining according to claim 2 is characterized in that: A telescopic beam (5) is provided at the front end of the top beam (6), and a guard plate (4) is hingedly connected to the lower side of the telescopic beam (5).

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