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CN-116838419-B - Quick construction device and method for coal mine underground gangue wall and hydraulic control system

CN116838419BCN 116838419 BCN116838419 BCN 116838419BCN-116838419-B

Abstract

The invention discloses a rapid construction device and method for a coal mine underground gangue wall body and a hydraulic control system, wherein the rapid construction device comprises a supporting structure, the supporting structure comprises a chassis, an engine is arranged on the chassis, two pairs of wheels are arranged on two sides of the chassis, a box body is further arranged on the chassis, a gangue material conveying mechanism is arranged at the top of the box body, a cementing material mixing mechanism is arranged in the box body, a gangue block forming mechanism is arranged at the rear end of the box body, and the rapid construction of square large-block gangue based on larger gangue particle size (5 mm-10 cm) is realized by arranging the gangue material conveying mechanism, the cementing material mixing mechanism and the gangue block forming mechanism, so that the gangue wall body is more conveniently constructed, a certain cementing material is added, the constructed gangue block has higher supporting strength, and a novel concept for constructing a coal mine underground high-strength support body is provided, and the technical problem of difficulty in constructing a gangue block in a narrow space in the prior art is solved.

Inventors

  • WANG HAIJUN
  • CHEN CHONGFENG
  • ZHU QIANXIANG
  • SUN SIQING

Assignees

  • 中煤科工西安研究院(集团)有限公司

Dates

Publication Date
20260508
Application Date
20230704

Claims (10)

  1. 1. The utility model provides a quick construction device of colliery underground gangue wall body, includes supporting mechanism (1), supporting mechanism (1) include chassis (101), chassis (101) on be provided with engine (102), both sides of chassis (101) be provided with two pairs of wheels (103), its characterized in that, chassis (101) on still be provided with box (2), the top of box (2) be provided with gangue material conveying mechanism (3), box (2) in be provided with cementing material blending mechanism (4), the rear end of box (2) be provided with gangue block forming mechanism (5); The waste conveying mechanism (3) comprises a plurality of groups of roller supporting rods (301) fixed on the upper surface of the box body (2), belt conveyor rollers (302) are arranged at the top of each group of roller supporting rods (301), all belt conveyor rollers (302) are connected through a belt (303), a funnel (304) is further arranged above the front end of the box body (2), and a discharge hole of the funnel (304) is positioned at one side of the belt (303); The cementing material mixing mechanism (4) comprises an AB cementing material storage box (401) and a cementing material mixing box (402), wherein the AB cementing material storage box (401) is communicated with the cementing material mixing box (402) through an AB cementing material conveying pipe (403), the AB cementing material storage box (401) comprises an A cementing material box (40101) and a B cementing material box (40102), an A cementing material conveying pump (40103) is arranged in the A cementing material box (40101), a B cementing material conveying pump (40104) is arranged in the B cementing material box (40102), output pipes of the A cementing material conveying pump (40103) and the B cementing material conveying pump (40104) are communicated with one end of the AB cementing material conveying pipe (403), a stirrer (40201) and a mixed cementing material conveying pump (40202) are arranged in the cementing material mixing box (402), and the output pipes of the mixed cementing material conveying pump (40202) extend out of the cementing material mixing box (402) and are divided into two paths; The gangue block forming mechanism (5) comprises a forming box (501) and two cementing material conveying pipes (502) with one end connected with two ends of an output pipe of a mixed cementing material conveying pump (40202) respectively, wherein the left side and the right side of the forming box (501) are both open, the top of a belt (303) is aligned with the top of the opening on the left side of the forming box (501), the other end of one cementing material conveying pipe (502) extends into the forming box (501) and is positioned on the top side, the other end of the other cementing material conveying pipe (502) extends into the forming box (501) and is positioned on the bottom side, the gangue block forming mechanism further comprises a pair of first hydraulic rods (503) and a pair of second hydraulic rods (504), one ends of the first hydraulic rods (503) and one ends of the second hydraulic rods (504) are hinged on a box body (2), the other ends of the first hydraulic rods (503) and the second hydraulic rods (504) are respectively hinged on the top end and the bottom end of an extrusion plate (505), and the extrusion plate (505) is positioned in the forming box (501); A plurality of discharging holes (506) are uniformly formed in the cementing material conveying pipe (502).
  2. 2. The rapid construction device for the coal mine underground gangue wall body according to claim 1, wherein a first monitor (6) is arranged on the side wall of the hopper (304), a second monitor (7) is arranged on a roller supporting rod (301) close to the forming box (501), and a third monitor (8) is arranged in the forming box (501).
  3. 3. The rapid construction apparatus for a coal mine underground gangue wall as claimed in claim 1, wherein the molding box (501) comprises a bottom plate (50101), a front side plate (50102) and a rear side plate (50103) vertically arranged on the bottom plate (50101), and a top plate (50104) arranged on top of the front side plate (50102) and the rear side plate (50103).
  4. 4. The hydraulic control system is characterized by controlling the first hydraulic rod (503) and the second hydraulic rod (504) in the rapid construction device of the coal mine underground gangue wall body according to any one of claims 1-3, comprising a first bidirectional hydraulic lock (11) and a second bidirectional hydraulic lock (12) which are respectively connected with a first oil cylinder (9) of the first hydraulic rod (503) and a second oil cylinder (10) of the second hydraulic rod (504), wherein the first bidirectional hydraulic lock (11) is connected with a first three-position four-way electromagnetic reversing valve (13), the second bidirectional hydraulic lock (12) is connected with a second three-position four-way electromagnetic reversing valve (14), the first three-position four-way electromagnetic reversing valve (13) and the second three-position four-way electromagnetic reversing valve (14) are both connected with one end of an overflow valve (15) and one end of a constant delivery pump (16), the other end of the overflow valve (15) and the other end of the constant delivery pump (16) are both connected with an oil tank (17), and the constant delivery pump (16) is connected with a constant delivery pump (18); The first bidirectional hydraulic lock (11) comprises a first left pilot check valve (1101) and a first right pilot check valve (1102), wherein two ends of the first left pilot check valve (1101) are respectively connected with a lower cavity of the first oil cylinder (9) and the first three-position four-way electromagnetic reversing valve (13), and two ends of the first right pilot check valve (1102) are respectively connected with an upper cavity of the first oil cylinder (9) and the first three-position four-way electromagnetic reversing valve (13); The second bidirectional hydraulic lock (12) comprises a second left pilot check valve (1201) and a second right pilot check valve (1202), two ends of the second left pilot check valve (1201) are respectively connected with a lower cavity of the second oil cylinder (10) and a second three-position four-way electromagnetic reversing valve (14), and two ends of the second right pilot check valve (1202) are respectively connected with an upper cavity of the second oil cylinder (10) and the second three-position four-way electromagnetic reversing valve (14).
  5. 5. A hydraulic control system according to claim 4, characterized in that a cooler (19) is arranged between the overflow valve (15) and the tank (17).
  6. 6. A hydraulic control system according to claim 4, characterized in that a filter (20) is arranged between the dosing pump (16) and the oil tank (17).
  7. 7. A method for quickly constructing a coal mine underground gangue wall body, which is characterized by adopting the device for quickly constructing the coal mine underground gangue wall body according to any one of claims 1-3 and the hydraulic control system according to any one of claims 4-6, and specifically comprising the following steps: Step 1, conveying crushed gangue collected by a funnel (304) to a belt (303) through a discharge hole; Step 2, through the rotation of a belt conveyor roller (302) on a roller supporting rod (301), a belt (303) moves, crushed gangue on the belt (303) is further conveyed into a forming box (501), and the top end of a squeezing plate (505) is positioned below the belt (303) through adjusting a first hydraulic rod (503) and a second hydraulic rod (504), and the bottom end of the squeezing plate (505) is positioned at the transverse rear side of the forming box (501); Step 3, after crushed gangue above the extrusion plate (505) is piled up to the full of the forming box (501), starting an A cementing material conveying pump (40103) and a B cementing material conveying pump (40104) in an AB cementing material storage box (401), and conveying the A cementing material and the B cementing material into a stirrer (40201) in a cementing material mixing box (402) through an AB cementing material conveying pipe (403) for mixing and stirring to obtain mixed cementing material; step4, conveying the mixed cementing material into two paths of cementing material conveying pipes (502) through two paths of output pipes of a mixed cementing material conveying pump (40202) respectively, and flowing out from respective discharge holes (506) into uncompacted crushed gangue; Step 5, after the mixed cementing material with a set quantity completely flows into crushed gangue in a forming box (501), the top end of a material extruding plate (505) moves in a direction away from a belt (303) by adjusting a first hydraulic rod (503) and a second hydraulic rod (504), and the bottom end of the extruding plate (505) moves in a direction close to the belt (303) to extrude to obtain a preliminary formed gangue block; Step 6, driving the wheels (103) to move towards the direction close to the forming box (501) by starting the engine (102), and adjusting the first hydraulic rod (503) and the second hydraulic rod (504) so that the top end and the bottom end of the extrusion plate (505) move towards the direction far away from the belt (303) to form a formed gangue block; and 7, repeating the steps 1-6, constructing formed gangue blocks in the goaf, and stacking to form the strip retaining wall.
  8. 8. The method for quickly constructing a coal mine underground gangue wall according to claim 7, wherein in step 2, the first hydraulic rod (503) and the second hydraulic rod (504) are adjusted so that the top end of the extrusion plate (505) is located below the belt (303), and the bottom end of the extrusion plate (505) is located at the rear side of the forming box (501), specifically comprising the following steps: The first three-position four-way electromagnetic directional valve (13) is adjusted to be positioned at an upper position, the quantitative pump (16) is opened to enable pressure oil supplied by the quantitative pump (16) to enter the upper position of the first three-position four-way electromagnetic directional valve (13), the pressure oil finally enters an upper cavity of the first oil cylinder (9) through a first right pilot one-way valve (1102) of the first two-way hydraulic lock (11), return oil in a lower cavity of the first oil cylinder (9) finally flows into the oil tank (17) through a first left pilot one-way valve (1101) of the first two-way hydraulic lock (11), and the first hydraulic rod (503) is retracted; The second three-position four-way electromagnetic directional valve (14) is adjusted to be positioned at the lower position, the quantitative pump (16) is opened to enable pressure oil supplied by the quantitative pump (16) to enter the lower position of the second three-position four-way electromagnetic directional valve (14), finally enter the lower cavity of the second oil cylinder (10) through the second left pilot one-way valve (1201) of the second bidirectional hydraulic lock (12), return oil in the upper cavity of the second oil cylinder (10) finally flows into the oil tank through the second right pilot one-way valve (1202) of the second bidirectional hydraulic lock (12), and the second hydraulic rod (504) stretches.
  9. 9. The method for quickly constructing a coal mine underground gangue wall according to claim 7, wherein in step 5, the top end of the material extrusion plate (505) is moved away from the belt (303) by adjusting the first hydraulic rod (503) and the second hydraulic rod (504), and the bottom end of the extrusion plate (505) is moved towards the direction approaching the belt (303), specifically comprising the following steps: the first three-position four-way electromagnetic directional valve (13) is adjusted to be positioned at the lower position, the quantitative pump (16) is opened to enable pressure oil supplied by the quantitative pump (16) to enter the lower position of the first three-position four-way electromagnetic directional valve (13), the pressure oil finally enters the lower cavity of the first oil cylinder (9) through the first left pilot one-way valve (1101) of the first two-way hydraulic lock (11), and return oil in the upper cavity of the first oil cylinder (9) finally flows into the oil tank (17) through the first right pilot one-way valve (1102) of the first two-way hydraulic lock (11) to enable the first hydraulic rod (503) to extend; The second three-position four-way electromagnetic directional valve (14) is adjusted to be located at an upper position, the quantitative pump (16) is opened to enable pressure oil supplied by the quantitative pump (16) to enter the upper position of the second three-position four-way electromagnetic directional valve (14), finally enter an upper cavity of the second oil cylinder (10) through a second right pilot one-way valve (1202) of the second bidirectional hydraulic lock (12), return oil in a lower cavity of the second oil cylinder (10) passes through a second left pilot one-way valve (1201) of the second bidirectional hydraulic lock (12), finally flow into the oil tank (17), and the second hydraulic rod (504) is retracted.
  10. 10. The method for quickly constructing a coal mine underground gangue wall according to claim 7, wherein in step 6, the first hydraulic rod (503) and the second hydraulic rod (504) are adjusted so that the top end and the bottom end of the extrusion plate (505) move away from the belt (303), and the method specifically comprises the following steps: The hydraulic oil flows into the lower cavity of the first oil cylinder (9) and the lower cavity of the second oil cylinder (10) respectively, meanwhile, when the hydraulic oil flows into the first left pilot one-way valve (1101) of the first two-way hydraulic lock (11) and the second left pilot one-way valve (1201) of the second two-way hydraulic lock (12), the respective internal pilot oil flows into the corresponding right one-way valve, and the return switch is opened to enable the hydraulic oil in the upper cavity of the first oil cylinder (9) and the hydraulic oil in the upper cavity of the second oil cylinder (10) to flow into the corresponding right pilot one-way valve (1101) of the first two-way hydraulic lock (11) and the second pilot one-way valve (1201) of the second two-way hydraulic lock (12) respectively, so that the hydraulic oil in the upper cavity of the first oil cylinder (9) and the upper cavity of the second oil cylinder (10) can flow into the first pilot one-way valve (503) and the second pilot one-way valve (17) respectively, and the return flow into the second oil cylinder (17) can be extended simultaneously.

Description

Quick construction device and method for coal mine underground gangue wall and hydraulic control system Technical Field The invention belongs to the field of mine filling and coal mine gangue solid waste treatment, relates to a rapid construction device of a wall body, and particularly relates to a rapid construction device and method of a coal mine underground gangue wall body and a hydraulic control system. Background A large amount of gangue is generated in the coal mining process, most mines where the gangue is disposed before are piled up on the ground, and along with the gradual improvement of the requirements of the nation on green ecology, the gangue treatment is a great difficulty in coal mine production. Currently, coal gangue is disposed of by stacking or treating paste with smaller size (generally less than 20 mm) in a waste roadway under the well to be discharged into a goaf. However, random stacking in the abandoned roadway cannot form a gangue pile with certain supporting strength, the roadway is inevitably subjected to the risk of collapse after long abandoned time, the roadway collapse can cause a certain scale of ore shock, and huge potential safety hazards are brought to the safety production of the coal mine. For filling goafs with paste, the forming time of the paste filling body is long because of the limitation of the paste setting time, so that the continuous production and filling of the fully-mechanized coal mining face of the coal mine are seriously influenced, and the single-sided productivity of the coal mine is low (less than 150 ten thousand t/a). Therefore, a rapid construction method of a large gangue wall (or solid strips) is urgently needed, and the rapid construction method can be used for constructing the gangue wall with certain supporting strength in a abandoned roadway while treating coal gangue, and can also be used for constructing the solid strips in a goaf of a working face, thereby providing assistance for improving the goaf filling efficiency. However, there is no better technical method or apparatus in the field to provide this function, mainly because the space under the coal mine is relatively narrow, the width of the roadway under the coal mine is generally 3-6 meters, the height is 2-5 meters, even the width of the working space available in the goaf behind the coal face is not more than 5 meters, the height is not more than 10 meters, and the narrow space size severely limits the size of the construction device. The limitation of the working space brings a plurality of inconveniences to the operation of constructing the block, and the block cannot be extruded from multiple directions, so that the compactness of the block is achieved. In order to solve the problems, the invention provides a rapid construction method of a coal mine underground gangue wall body, which is used for solving the problem of gangue block construction in a narrow space. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a device and a method for quickly constructing a coal mine underground gangue wall body and a hydraulic control system, so as to solve the technical problems of low utilization rate of large gangue blocks in a coal mine and difficult construction of gangue blocks in a narrow space in the prior art. In order to solve the technical problems, the invention adopts the following technical scheme: the quick construction device for the underground coal mine gangue wall comprises a supporting mechanism, wherein the supporting mechanism comprises a chassis, an engine is arranged on the chassis, two pairs of wheels are arranged on two sides of the chassis, a box body is further arranged on the chassis, a gangue material conveying mechanism is arranged at the top of the box body, a cementing material mixing mechanism is arranged in the box body, and a gangue block forming mechanism is arranged at the rear end of the box body; The gangue material conveying mechanism comprises a plurality of groups of roller supporting rods fixed on the upper surface of the box body, wherein the top of each group of roller supporting rods is provided with belt conveyor rollers, and all belt conveyor rollers are connected through a belt; The cementing material mixing mechanism comprises an AB cementing material storage box and a cementing material mixing box, wherein the AB cementing material storage box is communicated with the cementing material mixing box through an AB cementing material conveying pipe, the AB cementing material storage box comprises an A cementing material conveying pump and a B cementing material conveying pump, the A cementing material conveying pump is arranged in the A cementing material box, the B cementing material conveying pump is arranged in the B cementing material box, output pipes of the A cementing material conveying pump and the B cementing material conveying pump are communicated with one end of the AB cementing materia