Multifunctional machine for fully mechanized coal mining face tail of coal mine

Abstract

A coal mine fully mechanized coal mining face tail multifunctional machine comprises a multifunctional base, the rear side of the multifunctional base is connected with a working face scraper conveyor tail, and a unit support, a float coal surrounding assembly, a lifting anchor breaking arm and a power unit are integrated on the multifunctional base. A base of the unit support is connected with the multifunctional base into a whole, and the unit support is used for supporting a top plate. The float coal surrounding assembly is arranged on one side of the multifunctional base and used for surrounding float coal. The hoisting and anchor breaking arm is arranged on one side of the unit bracket and is used for material hoisting and anchor breaking; the power unit is connected with the hoisting anchor breaking arm and used for providing power for the hoisting anchor breaking arm. The unit bracket and the float coal enclosing assembly are connected with an underground emulsion station; and the underground 1140 / 660V power supply is connected with the power unit. The device is arranged in the tail end area of the fully mechanized coal mining face, the supporting function is achieved, meanwhile, the multiple functions of coal blocking, auxiliary coal charging, material hoisting, anchor breaking and the like are expanded, multiple purposes are achieved through one machine, and the application of the device is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of two-lane supporting equipment for a fully-mechanized mining working face in a coal mine, in particular to a multifunctional machine at the tail of a fully-mechanized mining working face in a coal mine. Background Art

[0002] The tail area of ​​the fully mechanized mining face mainly refers to the area at the intersection of the return air tunnel and the cutting eye. The end support of the working face and the tail of the scraper conveyor are arranged in this area. The advance support is arranged in the return air tunnel, which is commonly known as the tail triangle area. This area is affected by the mining disturbance of the fully mechanized mining face, and the roof pressure is high, so it needs to be strengthened. Due to the limitation of the space at the tail of the scraper and the forward movement of the support, there is an empty top area between the end support and the advance of the tunnel. The lack of effective support from the support poses a great safety hazard to the personnel and equipment in the end area. Therefore, it is necessary to reinforce the support of this empty top area.

[0003] When the coal mining machine cuts coal to the tail of the machine, in order to ensure that the coal wall is cut through, the coal mining machine drum will operate into the return air tunnel, which also causes part of the coal to be scattered in front of the tail of the scraper, forming a large amount of accumulated "triangular coal". At present, manual coal picking and cleaning is adopted, and the triangular coal is loaded onto the scraper and transported out of the working face. Each production shift has to clean the floating coal in the triangular area many times. When the amount of floating coal is large, it will flow into the return air tunnel, blocking the passage and affecting traffic, which is not conducive to the standardized management of coal mines. In addition, manual coal cleaning requires operation under the above-mentioned empty roof, which brings great safety hazards.

[0004] Another problem in the tail area of ​​the comprehensive mining working face is the lifting and transfer of accessories or materials. At present, when the working face support, scraper or coal mining machine needs to replace large accessories, a transport vehicle is used to transport the accessories to the tail area, and the accessories are manually dragged to the tail of the scraper conveyor through the fall chain or the cylinder on the support, and then the scraper conveyor is used to transport the accessories to the position where they need to be replaced. The transfer of accessories in the tail area is time-consuming, labor-intensive, inefficient, and poses a great safety hazard.

[0005] As the comprehensive mining face is moving forward, the basic roof of the goaf area of ​​the two lanes is broken successively, and the roof breaks regularly and periodically. During the mining process of the comprehensive mining face, the management of the roof of the goaf area of ​​the two lanes has always been a difficult problem in the underground management of coal mines. The goaf area of ​​the two lanes has a large area of ​​suspended roof, and the roof often collapses in time, resulting in gas accumulation in the upper corner, excessive mine pressure concentration and sudden collapse of the roof. The impact hazard brings hidden dangers to the safe production of the working face. In order to improve the management level of the roof at both ends of the comprehensive mining face and effectively prevent roof accidents, during the normal mining operation, due to the lack of obvious roof pressure, it is necessary to use a special anchor withdrawal device to remove the trays and lock sleeves of the anchor cables and anchor rods at both ends to promote the timely collapse of the goaf area of ​​the two lanes, and take measures such as unloading steel belts and withdrawing anchors at the ends of the goaf area of ​​the two lanes. Advance anchor withdrawal can artificially weaken the roof support strength and release the stress of the tunnel roof, so as to achieve the purpose of timely follow-up collapse of the goaf at both ends. Advance anchor withdrawal and roof release management of goaf areas generally adopts forced anchor withdrawal and roof release, that is, hard anchor withdrawal method, and uses anchor withdrawer to withdraw the anchor cable. At present, the anchor breaking mainly adopts the method of support pushing and destroying or manual anchor breaking. In the process of forward movement of the end support in the tunnel, the top-wiping frame is used, and the shear force of the support moving frame is used to damage the anchor rod or anchor cable, but it will cause damage to the support, and the locking sleeve or anchor cable will be squeezed and sparks will be emitted, which greatly threatens the safety of personnel and equipment; and the workers use hydraulic breakers to destroy the anchor cable locking sleeve after climbing the ladder, which will also bring greater labor intensity and safety hazards.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0007] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a multifunctional machine at the tail end of a coal mine comprehensive mining working face. The utility model is arranged in the tail end area of ​​the comprehensive mining working face, and while realizing the support function, it expands multiple functions such as coal blocking, auxiliary coal loading, material lifting, and anchor breaking, thereby realizing multiple uses of one machine and expanding the use of the equipment.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multifunctional machine at the tail of a fully mechanized coal mining face, comprising a multifunctional base, the rear side of which is connected to the tail of a scraper conveyor of the working face, and a unit bracket, a floating coal surrounding component, a lifting anchor breaking arm and a power unit are integrated on the multifunctional base;

[0009] The base of the unit support is connected to the multifunctional base as a whole, and the unit support is used to support the top plate;

[0010] The floating coal enclosing component is arranged on one side of the multifunctional base and is used to enclose the floating coal;

[0011] The lifting and anchor breaking arm is set on one side of the unit bracket and is used for material lifting and anchor breaking;

[0012] The power unit is connected to the lifting anchor-breaking arm and is used to provide power to the lifting anchor-breaking arm;

[0013] The unit support and floating coal enclosure assembly are connected to the underground emulsion station;

[0014] The underground 1140 / 660V power supply is connected to the power unit.

[0015] Based on the above, the floating coal surrounding assembly includes a lateral coal blocking plate and a forward coal blocking plate. The lateral coal blocking plate is vertically fixedly connected to one side of the multifunctional base along the front-to-back direction. The lateral coal blocking plate is composed of a lateral box body with an open front side and a first inner telescopic baffle inserted in the lateral box body. The forward coal blocking plate is vertically arranged in the left-right direction in front of the lateral coal blocking plate and on the side away from the multifunctional base. The forward coal blocking plate is composed of a forward box body with an open side away from the multifunctional base and a second inner telescopic baffle inserted in the forward box body. The front side edge of the first inner telescopic baffle is fixedly connected to a side of the forward box body close to the multifunctional base. The lateral box body and the forward box body are connected by a first telescopic oil cylinder, and the forward box body and the second inner telescopic baffle are connected by a second telescopic oil cylinder. The downhole emulsion station provides hydraulic power to the first telescopic oil cylinder and the second telescopic oil cylinder respectively.

[0016] Based on the above, the lifting anchor breaking arm includes a lifting arm and an anchor cable cutter. The lifting arm is fixedly installed on the upper part of the lateral coal retaining plate, the anchor cable cutter is fixed on the front end of the lifting arm, and the power unit provides power to the lifting arm and the anchor cable cutter respectively.

[0017] Based on the above, the power unit includes a hydraulic pump station, which includes a hydraulic multi-way valve. The underground 1140 / 660V power supply provides power to the motor pump group of the hydraulic pump station, and the hydraulic pump station provides hydraulic power to the lifting arm and the anchor cable cutter respectively.

[0018] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model integrates a unit support, a lifting anchor-breaking arm, a retractable coal-blocking plate, etc. on a multifunctional base, realizing multiple functions such as end area reinforcement support, tail floating coal collection and cleaning, material lifting, and auxiliary anchor breaking. The equipment is equipped with a power unit, which is mainly composed of a hydraulic pump station, powered by a 1140 / 660V power supply, to provide hydraulic power for the lifting anchor-breaking arm, while the unit support and the retractable coal-blocking plate are supplied with emulsion, which is consistent with the hydraulic support of the working face. The multifunctional machine is connected to the tail of the scraper conveyor on the working face, and moves forward with the scraper machine, without manual pushing. The equipment has a high degree of integration, saves space, and the combination of multiple functions greatly improves the safety of the end support area of ​​the comprehensive mining working face and reduces the intensity of manual work.

[0019] The beneficial effects of the utility model are specifically as follows:

[0020] (1) The utility model adopts a multifunctional base with an enlarged area, which is connected to the unit bracket base as a whole, thereby increasing the grounding area and providing stable support for the arrangement of other devices. In addition, the larger grounding area can prevent the entire device from sinking to the bottom;

[0021] (2) Two types of retractable coal baffles are arranged perpendicular to each other on the side of the multifunctional bottom plate: a lateral coal baffle and a forward coal baffle, which can limit the spread of floating coal and prevent triangular coal from pouring into the return air tunnel. The retractable structure can increase the coal blocking area. When the first inner retractable baffle is retracted, the forward coal baffle can gather the coal. When the scraper conveyor moves forward, the gathered floating coal is shoveled onto the scraper conveyor and transported out of the working face. There is no need to arrange workers to perform manual coal cleaning operations under the empty roof, eliminating safety hazards.

[0022] (3) The multifunctional base is integrated with a lifting and anchor breaking arm, which realizes multiple functions such as cargo lifting and transfer, anchor cable breaking, etc. in the tail end area of ​​the machine;

[0023] (4) The multifunctional base can be connected to the tail of the scraper conveyor and move with the scraper conveyor.

[0024] In summary, the utility model is arranged in the tail end area of ​​the comprehensive mining working face machine. While realizing the support function, it expands multiple functions such as coal blocking, auxiliary coal loading, material lifting, anchor breaking, etc., realizing multiple uses of one machine and expanding the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the axis view of the utility model Figure 1 .

[0026] Figure 2 It is the axis view of the utility model Figure 2 .

[0027] Figure 3 It is a structural schematic diagram of the lifting anchor-breaking arm of the utility model.

[0028] Figure 4 It is a schematic diagram of the application arrangement of the utility model in a coal mine working face.

[0029] In the figure: 1. Multifunctional base; 2. Scraper conveyor; 3. Unit bracket; 4. Lifting anchor breaking arm; 5. Power unit; 6. Bolt connection hole; 7. Lateral box; 8. First inner telescopic baffle; 9. Forward box; 10. Second inner telescopic baffle; 11. First telescopic cylinder; 12. Second telescopic cylinder; 13. Lifting arm; 14. Anchor cable cutter; 15. Hydraulic motor; 16. Slewing bearing; 17. Arm seat; 18. Hydraulic telescopic boom; 19. Lifting cylinder; 20. Winch; 21. Pulley; 22. Hook; 23. Hydraulic multi-way valve. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0031] like Figure 1 to Figure 4 As shown, a multifunctional machine at the tail of a fully mechanized coal mining face comprises a multifunctional base 1, the rear side of which is connected to the tail of a scraper conveyor 2 of the working face, and a unit bracket 3, a floating coal surrounding component, a lifting anchor arm 4 and a power unit 5 are integrated on the multifunctional base 1;

[0032] The base of the unit support 3 is connected to the multifunctional base 1 as a whole, and the unit support 3 is used to support the top plate;

[0033] The floating coal enclosing assembly is arranged on one side of the multifunctional base 1 and is used to enclose the floating coal;

[0034] The lifting and anchor breaking arm 4 is arranged on one side of the unit support 3 and is used for lifting materials and breaking anchors;

[0035] The power unit 5 is connected to the lifting anchor breaking arm 4 and is used to provide power to the lifting anchor breaking arm 4;

[0036] The unit support 3 and the floating coal surrounding assembly are connected to an underground emulsion station (not shown);

[0037] The underground 1140 / 660V power supply is connected to the power unit 5.

[0038] The rear side of the multifunctional base 1 is provided with a bolt connection hole 6 for connecting with the tail of the scraper conveyor 2 , so that the whole machine can move along with the scraper conveyor 2 .

[0039] In this embodiment, the floating coal surrounding assembly includes a lateral coal blocking plate and a forward coal blocking plate. The lateral coal blocking plate is vertically fixedly connected to one side of the multifunctional base 1 along the front-to-back direction. The lateral coal blocking plate is composed of a lateral box 7 with an open front side and a first inner telescopic baffle 8 inserted in the lateral box 7. The forward coal blocking plate is vertically arranged in the left-right direction in front of the lateral coal blocking plate and on the side away from the multifunctional base 1. The forward coal blocking plate is composed of a forward box 9 with an open side away from the multifunctional base 1 and a second inner telescopic baffle 10 inserted in the forward box 9. The front side edge of the first inner telescopic baffle 8 is fixedly connected to a side of the forward box 9 close to the multifunctional base 1. The lateral box 7 and the forward box 9 are connected by a first telescopic cylinder 11, and the forward box 9 and the second inner telescopic baffle 10 are connected by a second telescopic cylinder 12. The downhole emulsion station provides hydraulic power to the first telescopic cylinder 11 and the second telescopic cylinder 12 respectively. The expansion and contraction of the first telescopic oil cylinder 11 can drive the first inner telescopic baffle 8 to expand and contract in the lateral box 7, so that the lateral coal blocking plate itself can expand and contract, and the overall movement of the forward coal blocking plate can be realized. The expansion and contraction of the second telescopic oil cylinder 12 can drive the second inner telescopic baffle 10 to expand and contract in the forward box 9, so that the forward coal blocking plate itself can be expanded. Then, when the first inner telescopic baffle 8 and the second inner telescopic baffle 10 are both extended, the coal blocking area can be increased. By setting the lateral coal blocking plate and the forward coal blocking plate, the diffusion of floating coal can be limited, and the triangular coal can be prevented from pouring into the return air lane. The lateral coal blocking plate and the forward coal blocking plate and the scraper conveyor 2 together surround the floating coal, and the forward movement of the scraper conveyor 2 realizes the floating coal transportation, and finally realizes the functions of coal blocking and auxiliary coal loading.

[0040] The unit support 3 of this embodiment is a support device with conventional functions, and the multifunctional base 1 is also the base of the unit support 3. The unit support 3 includes a hydraulic telescopic column, a top beam and a hydraulic system. When the hydraulic telescopic column is pushed upward, the top beam contacts the top (contacts the top plate), thereby realizing support for the top plate.

[0041] In this embodiment, the lifting and anchor breaking arm 4 includes a lifting arm 13 and an anchor cable cutter 14. The lifting arm 13 is fixedly mounted on the upper part of the lateral coal retaining plate, and the anchor cable cutter 14 is fixed at the front end of the lifting arm 13. The power unit 5 provides power to the lifting arm 13 and the anchor cable cutter 14. The lifting arm 13 can lift the materials in the tunnel and transfer and unload them to the scraper conveyor 2, and the scraper conveyor 2 then transports the materials to the destination. The anchor cable cutter 14 can break the anchor cable on the tunnel roof driven by the lifting arm 13, so that the multifunctional machine has the functions of material lifting and anchor breaking at the same time.

[0042] In this embodiment, the power unit 5 is mainly composed of a hydraulic pump station, which includes a hydraulic multi-way valve 23. The underground 1140 / 660V power supply provides power to the motor pump group of the hydraulic pump station, and the hydraulic pump station provides hydraulic power to the lifting arm and the anchor cable cutter respectively.

[0043] The lifting arm 13 of the present embodiment includes a hydraulic motor 15, a slewing bearing 16, an arm seat 17, a hydraulic telescopic boom 18, a lifting cylinder 19 and a winch 20 (hydraulic type). The hydraulic motor 15 is installed on one side of the slewing bearing 16 and drives the rotating part of the slewing bearing 16 to rotate. The slewing bearing 16 is fixedly installed on the upper part of the lateral coal baffle. The arm seat 17 is fixedly installed on the upper end of the rotating part of the slewing bearing 16. The bottom end of the arm tube of the hydraulic telescopic boom 18 is hinged on the arm seat 17. The two ends of the lifting cylinder 19 are respectively The hydraulic telescopic boom 18 is hinged on the arm tube and arm seat 17 of the hydraulic telescopic boom 18, and the winch 20 is installed on the upper part of the arm tube of the hydraulic telescopic boom 18. The upper part of the front end of the telescopic arm of the hydraulic telescopic boom 18 is provided with a pulley 21. The front end of the wire rope of the winch 20 is arranged vertically downward through the pulley 21 and connected with a hook 22. The anchor cable cutter 14 is fixed on the front end of the telescopic arm of the hydraulic telescopic boom 18. The hydraulic pump station provides hydraulic power to the hydraulic telescopic boom 18, the lifting cylinder 19, the winch 20 and the hydraulic motor 15 respectively. The hook 22 is used to lift materials. The hydraulic motor 15 drives the arm seat 17 to rotate through the slewing bearing 16, thereby driving the hydraulic telescopic boom 18 to swing. The winch 20 drives the hook 22 to move up and down to lift or unload materials. The actions of the anchor cable cutter 14, the hydraulic telescopic boom 18, the lifting cylinder 19, the winch 20 and the hydraulic motor 15 are respectively controlled by the hydraulic multi-way valve 23.

[0044] The integrated miniaturized design of the multifunctional machine at the tail of the coal mine comprehensive mining face can be installed in the narrow space at the tail of the machine and connected to the original scraper conveyor 2 to realize equipment movement without the need for additional power, thus meeting the diverse needs of specific areas at the tail of the machine.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A multifunctional machine at the tail of a fully mechanized coal mining face, characterized in that: It includes a multifunctional base, the rear side of which is connected to the tail of the scraper conveyor on the working face, and the multifunctional base is integrated with a unit bracket, a floating coal surrounding component, a lifting anchor breaking arm and a power unit; The base of the unit support is connected to the multifunctional base as a whole, and the unit support is used to support the top plate; The floating coal enclosing component is arranged on one side of the multifunctional base and is used to enclose the floating coal; The lifting and anchor breaking arm is set on one side of the unit bracket and is used for material lifting and anchor breaking; The power unit is connected to the lifting anchor-breaking arm and is used to provide power to the lifting anchor-breaking arm; The unit support and floating coal enclosure assembly are connected to the underground emulsion station; The underground 1140 / 660V power supply is connected to the power unit.

2. The multifunctional machine at the tail of a fully mechanized coal mining face according to claim 1, characterized in that: The floating coal surrounding assembly includes a lateral coal blocking plate and a forward coal blocking plate. The lateral coal blocking plate is vertically fixedly connected to one side of the multifunctional base along the front-to-back direction. The lateral coal blocking plate consists of a lateral box body with an open front side and a first inner telescopic baffle inserted in the lateral box body. The forward coal blocking plate is vertically arranged in the left-right direction in front of the lateral coal blocking plate and on the side away from the multifunctional base. The forward coal blocking plate consists of a forward box body with an open side away from the multifunctional base and a second inner telescopic baffle inserted in the forward box body. The front side edge of the first inner telescopic baffle is fixedly connected to a side of the forward box body close to the multifunctional base. The lateral box body and the forward box body are connected by a first telescopic oil cylinder, and the forward box body and the second inner telescopic baffle are connected by a second telescopic oil cylinder. The downhole emulsion station provides hydraulic power to the first telescopic oil cylinder and the second telescopic oil cylinder respectively.

3. The multifunctional machine at the tail of a fully mechanized coal mining face according to claim 2, characterized in that: The lifting anchor-breaking arm comprises a lifting arm and an anchor cable cutter. The lifting arm is fixedly mounted on the upper part of the lateral coal retaining plate, the anchor cable cutter is fixed on the front end of the lifting arm, and a power unit provides power to the lifting arm and the anchor cable cutter respectively.

4. The multifunctional machine at the tail of a fully mechanized coal mining face according to claim 1, characterized in that: The power unit includes a hydraulic pump station, which includes a hydraulic multi-way valve. The underground 1140 / 660V power supply provides power to the motor pump group of the hydraulic pump station. The hydraulic pump station provides hydraulic power to the lifting arm and the anchor cable cutter respectively.

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