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CN-122014311-A - Auxiliary coal dropping device for caving coal working face

CN122014311ACN 122014311 ACN122014311 ACN 122014311ACN-122014311-A

Abstract

The invention relates to the technical field of coal exploitation, and discloses an auxiliary coal dropping device for a top coal caving working face, which comprises a hydraulic support body and a crushing assembly, wherein the hydraulic support body comprises a base and an inclined top plate, and the inclined top plate is arranged on the base; the crushing assembly comprises a rotary driving piece, a transmission piece and an impact head, wherein the rotary driving piece is arranged on the base, the rotary driving piece is connected with the transmission piece, the inclined top plate is provided with a through hole, one end of the impact head penetrates through the through hole and then is connected with the transmission piece, the other end of the impact head extends out of the through hole, the rotary driving piece can drive the impact head to be in sliding connection with the inner wall of the through hole through the transmission piece, and the impact head is used for impacting and damaging a coal seam. The rotary driving piece is arranged on the base of the hydraulic support body, and the impact head is driven to vibrate through the transmission piece, so that the impact head can directly act on the coal bed to impact and destroy. Therefore, the impacted coal bed is broken, and the coal dropping operation of the coal bed is realized.

Inventors

  • WANG JUNFENG
  • LIU ZHENTIAN
  • ZHANG WENJUN
  • SHEN PENG
  • ZHAO YANFEI
  • GUO WEI
  • LI GUOQING
  • ZHANG CHAOCHAO

Assignees

  • 山西高平科兴新庄煤业有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (9)

  1. 1. The utility model provides a top coal caving face assists coal device, its characterized in that includes: The hydraulic support comprises a hydraulic support body and a hydraulic support body, wherein the hydraulic support body comprises a base (101) and an inclined top plate (102), and the inclined top plate (102) is installed on the base (101); The crushing assembly comprises a rotary driving piece, a transmission piece and an impact head (201), wherein the rotary driving piece is arranged on the base (101), the rotary driving piece is connected with the transmission piece, the inclined top plate (102) is provided with a through hole, one end of the impact head (201) penetrates through the through hole and then is connected with the transmission piece, and the other end of the impact head (201) extends out of the through hole; The rotary driving piece can drive the impact head (201) to slide on the inner wall of the through hole through the transmission piece, and the impact head (201) is used for impacting and damaging a coal bed.
  2. 2. The roof caving face assisted coal dropping device of claim 1, wherein the driving member comprises: the conversion piece is connected with the rotary driving piece and is used for converting rotary motion into linear motion; a first cylinder (202) having a first annular groove (203) disposed therein; the first sliding block (204) is positioned in the first annular groove (203) and is in sliding connection with the inner wall of the first annular groove (203); the impact head (201) stretches into the first cylinder (202) and is fixedly connected with the first sliding block (204); The opening end of the second cylinder body (205) stretches into the first cylinder body (202), the outer side wall of the second cylinder body (205) is in sliding connection with the inner side wall of the first cylinder body (202), and the part of the second cylinder body (205) stretching out of the first cylinder body (202) is connected with the conversion piece; And the second sliding block (206) is in sliding connection with the inner wall of the second cylinder (205).
  3. 3. The roof caving face assisted coal dropping device of claim 2, wherein the transition piece comprises; A shaft (207) connected to the rotation driving member; The ball body (208) is sleeved on the periphery of the shaft body (207) and is fixedly connected with the shaft body (207), a second annular groove is formed in the ball body (208), an included angle between the axial direction of the second annular groove and the axial direction of the shaft body (207) is an acute angle, a plurality of arc-shaped grooves are formed in the second annular groove, and the arc-shaped grooves are distributed at intervals around the axial direction of the second annular groove; the plurality of balls (209), each ball (209) is in rolling connection with the corresponding inner wall of the arc-shaped groove, and each ball (209) is at least partially exposed out of the arc-shaped groove; the inner wall of the swinging ring (210) is provided with a third annular groove, and the inner wall of the third annular groove is in rolling connection with all the balls (209); One end of the sliding rod (211) is fixedly connected with the swinging ring (210), and the other end of the sliding rod is in sliding connection with the protruding part of the second cylinder (205); The movement direction of the second cylinder (205) is parallel to the axial direction of the shaft body (207).
  4. 4. The caving face assisted coal dropping device according to claim 3, further comprising a housing (212), wherein the housing (212) and the base (101) enclose a mounting cavity, and the rotary driving member and the conversion member are both positioned in the mounting cavity.
  5. 5. The roof caving face assisted coal dropping device of claim 4, wherein the rotary drive comprises: the first motor (213) is fixedly connected with the inner wall of the mounting cavity; the first gear (214) is sleeved on the periphery of the output shaft of the first motor (213) and is fixedly connected with the output shaft of the first motor (213); The second gear (215) is sleeved on the periphery of the shaft body (207) and is fixedly connected with the shaft body (207), and two ends of the shaft body (207) are rotationally connected with the inner wall of the mounting cavity; the number of teeth of the second gear (215) is greater than the number of teeth of the first gear (214).
  6. 6. The roof caving face assisted coal dropping device of any one of claims 1 to 5, further comprising: The second motor (301) is fixedly connected with the inclined top plate (102); One end of the crankshaft (302) is fixedly connected with the output shaft of the second motor (301), and the other end of the crankshaft is rotationally connected with the inclined top plate (102); a connecting rod (305) having one end hinged to the crankshaft (302); a third sliding block (303) hinged with the other end of the connecting rod (305); and the third sliding block (303) penetrates through the inclined top plate (102) and is fixedly connected with the triangular conical vibrating plate (304).
  7. 7. The roof caving face assisted coal dropping device of claim 6, further comprising: A transverse top plate (103) hinged with the inclined top plate (102); the mounting end of the first hydraulic cylinder (104) is hinged with the base (101), and the telescopic end of the first hydraulic cylinder is hinged with the transverse top plate (103); A second hydraulic cylinder (105) with its mounting end hinged to the transverse top plate (103) and its telescopic end hinged to the inclined top plate (102); A first rod body (106), one end of which is hinged with the inclined top plate (102) and the other end of which is hinged with the base (101); the second rod body (107) is arranged at intervals with the first rod body (106), one end of the second rod body (107) is hinged with the inclined top plate (102), and the other end of the second rod body is hinged with the base (101).
  8. 8. The roof caving face assisted coal dropping device of claim 7, further comprising: -a trailing top plate (108) hinged to said inclined top plate (102); And a third hydraulic cylinder (109) with a mounting end hinged with the inclined top plate (102) and the other end hinged with the tail top plate (108).
  9. 9. The roof caving face assisted coal dropping device of claim 8, further comprising: A head plate (110) hinged to the transverse plate (103); and a fourth hydraulic cylinder (111) which is connected to the lateral top plate (103) at its attachment end and is hinged to the head top plate (110) at its other end.

Description

Auxiliary coal dropping device for caving coal working face Technical Field The invention relates to the technical field of coal exploitation, in particular to an auxiliary coal dropping device for a top coal caving working face. Background In the technical field of auxiliary equipment for mining of a coal mine roof caving coal working face, development of roof caving coal mining technology greatly improves coal mining efficiency, can effectively increase coal yield, and has great significance in meeting energy requirements and promoting development of coal industry. In order to solve the problem of difficult caving of the top coal on the top coal caving working surface, a blasting mode is often adopted, and the hard top coal is broken by the energy generated by explosive explosion in the blasting mode, so that the top coal can be caving to a certain extent. In addition, the manual crushing mode is widely applied, and operators directly crush the top coal by using tools. However, the stability of the top plate is easily damaged by shock waves generated by the blasting mode, the serious potential safety hazard of collapse of the buried top plate is caused, the efficiency of the manual crushing mode is extremely low, the labor intensity is extremely high, and operators are directly exposed below the hard top coal and are easily threatened by falling, collapse and the like of the top coal, so that the safety risk is extremely high. Disclosure of Invention In view of the above, the invention provides an auxiliary coal dropping device for a top coal caving working face, which solves the problems that the stability of a top plate is easily damaged by shock waves generated in a blasting mode, the serious potential safety hazard of collapse of a buried top plate is caused, the efficiency of a manual breaking mode is extremely low, the labor intensity is extremely high, and operators are directly exposed below hard top coal, and the problems of easy threat of falling, collapse and the like of the top coal and extremely high safety risk are solved. In a first aspect, the application provides an auxiliary coal falling device for a caving coal working face, comprising: the hydraulic support body comprises a base and an inclined top plate, wherein the inclined top plate is installed on the base; the crushing assembly comprises a rotary driving piece, a transmission piece and an impact head, wherein the rotary driving piece is arranged on the base, the rotary driving piece is connected with the transmission piece, the inclined top plate is provided with a through hole, one end of the impact head penetrates through the through hole and then is connected with the transmission piece, and the other end of the impact head extends out of the through hole; The rotary driving piece can drive the impact head to slide on the inner wall of the through hole through the transmission piece, and the impact head is used for impacting and damaging a coal bed. The hydraulic support has the beneficial effects that the rotary driving piece is arranged on the base of the hydraulic support body, and the impact head is driven to vibrate through the transmission piece, so that the impact head can directly act on a coal bed to impact and destroy. The auxiliary coal dropping device for the top coal caving working face does not need to additionally build a mounting bracket, is adaptive to the existing equipment environment of the top coal caving working face, provides power for the rotary driving piece, transmits the power to the impact head through the driving piece, ensures that the impact force of the impact head on a coal bed is stable, effectively improves the crushing efficiency of hard top coal, has a guiding effect on the sliding of the impact head through the through hole, avoids the deviation of the impact head in the impact process, ensures the accurate impact position, and further breaks the impacted coal bed, and further realizes the coal dropping operation of the coal bed. In an alternative embodiment, the transmission member includes: the conversion piece is connected with the rotary driving piece and is used for converting rotary motion into linear motion; a first cylinder body, in which a first annular groove is arranged; The first sliding block is positioned in the first annular groove and is in sliding connection with the inner wall of the first annular groove; the impact head extends into the first cylinder and is fixedly connected with the first sliding block; the opening end of the second cylinder body stretches into the first cylinder body, the outer side wall of the second cylinder body is in sliding connection with the inner side wall of the first cylinder body, and the part of the second cylinder body stretching out of the first cylinder body is connected with the conversion piece; And the second sliding block is in sliding connection with the inner wall of the second cylinder body. The rotary driving device has the advan