Search

CN-224228674-U - Shield machine and coal mine fully-mechanized mining system

CN224228674UCN 224228674 UCN224228674 UCN 224228674UCN-224228674-U

Abstract

The application provides a shield machine and a coal mine fully-mechanized coal mining system, wherein the shield machine comprises a cutter head assembly and a driving assembly, the cutter head assembly is provided with a cutting part and a rotary supporting part, the driving assembly is provided with a driving part and a chain wheel, one end of the rotary supporting part, which is close to the driving assembly, is provided with tooth row rings, the tooth row rings are provided with meshing parts which are annularly arranged at intervals, the pitch of the tooth row rings is the same as the tooth pitch of the chain wheel, the tooth thickness of the chain wheel is smaller than the pitch of the adjacent meshing parts, and when the tooth tops of the chain wheel are meshed with the meshing parts, a first conduction gap is formed between the tooth tops of the chain wheel and the adjacent meshing parts and is used for discharging sediment. The application adopts a mode that the tooth row wheel is meshed with the chain wheel, and a first conduction gap is arranged between the tooth top of the chain wheel and the adjacent meshing part, so that impurities such as sediment can be discharged through the first conduction gap, normal meshing transmission between the tooth row ring and the chain wheel is ensured, and the technical problem of clamping of the supporting part caused by incapability of discharging the impurities such as sediment is solved.

Inventors

  • ZHANG XIWANG
  • ZOU MINGJUN
  • WANG TIANXIANG
  • Yin guiyang

Assignees

  • 辽宁鑫丰矿业（集团）有限公司

Dates

Publication Date
20260512
Application Date
20250414

Claims (10)

  1. 1. The shield tunneling machine is characterized by comprising a cutterhead assembly and a driving assembly; The cutter head assembly is provided with a cutting part and a rotary supporting part connected with the cutting part, and the driving assembly is provided with a driving part and a chain wheel connected with the driving part; The rotary support part is provided with a tooth row ring at one end close to the driving assembly, the tooth row ring is provided with meshing parts which are annularly arranged at intervals, and the pitch of the tooth row ring is the same as the pitch of the chain wheel so as to enable the meshing parts to mesh with the chain wheel; The tooth thickness of the sprocket is smaller than the distance between the adjacent meshing parts, so that when the tooth tops of the sprocket are meshed with the meshing parts, a first conduction gap is formed between the tooth tops of the sprocket and the adjacent meshing parts, and the first conduction gap is used for discharging sediment.
  2. 2. The shield machine according to claim 1, wherein the sprocket has a smaller dimension in the axial direction than the tooth row ring, so that when the tooth tip of the sprocket meshes with the meshing portion, the meshing portion and the sprocket are formed with a second conduction gap in the axial direction for discharging silt.
  3. 3. The shield machine according to claim 1, wherein when the tooth tip of the sprocket is meshed with the meshing portion, a third conduction gap is formed between the tooth root of the sprocket and a wall surface of the meshing portion, which is close to the tooth root of the sprocket, and the third conduction gap is used for discharging silt.
  4. 4. The shield machine of claim 1, wherein the pitch of the row of teeth and the pitch of the sprocket are both between 70mm and 90 mm.
  5. 5. The shield machine of claim 4, further comprising a main beam and a first support assembly, wherein the main beam is divided into a front portion and a middle portion along an axial direction of the cutterhead assembly; The cutter head assembly and the driving assembly are arranged at the front part, and the first supporting assembly is arranged at the middle part; The output end of the extending part is connected with the rotating part, and the first supporting part is connected with one end of the rotating part, which is away from the extending part; the second side wall of the first supporting part is connected to the front part through the pushing part, so that the first supporting part is supported on the side wall of the roadway.
  6. 6. The shield tunneling machine of claim 5, further comprising a second support assembly; The second supporting component comprises an upper supporting part and a lower supporting part, wherein the upper supporting part and the lower supporting part are arranged at the front part and are symmetrically distributed about the axis of the front part, so that the upper supporting part supports the upper side wall of the roadway, and the lower supporting part supports the lower side wall of the roadway.
  7. 7. The shield tunneling machine of claim 5, wherein a rear portion is further formed on the main beam at an end of the middle portion facing away from the front portion; The third support assembly comprises a rear support portion, wherein the rear support portion is symmetrically arranged on the side wall of the rear portion around the axis of the rear portion, and the rear support portion extends towards the ground to support the rear portion.
  8. 8. The shield tunneling machine according to claim 1, wherein the cutting part comprises a cutting disc, hob cutters and scrapers, the cutting disc is provided with a cutting surface, at least one hob cutter is arranged in the center of the cutting surface and extends along a preset direction, the rest hob cutters are arranged on the cutting surface at intervals, and the scrapers are arranged on the edge of the cutting surface at preset angles.
  9. 9. The shield tunneling machine according to claim 1, wherein the driving portion includes a plurality of driving motors, the plurality of driving motors are arranged at intervals along a circumferential direction, and output ends of the plurality of driving motors are engaged with an inner ring of the tooth row ring through the sprocket.
  10. 10. A fully mechanized coal mining system comprising a shield machine according to any one of claims 1 to 9.

Description

Shield machine and coal mine fully-mechanized mining system Technical Field The application relates to the technical field of fully-mechanized coal mining, in particular to a shield machine and a fully-mechanized coal mining system. Background Along with the development of economy and the development of society, higher requirements are put forward on underground coal exploitation and roadway tunneling, and the shield tunneling machine for the coal mine is mainly used for tunneling underground roadway and simultaneously completing coal transportation. The device has the characteristics of simple structure, convenient operation, long service life, safety, reliability and the like. In the existing shield machine, a motor (or a hydraulic motor) and a speed reducer are adopted at a driving part to drive a plurality of pinions to rotate, the pinions drive a slewing bearing part to rotate, and the slewing bearing part is connected with a cutter head through a flange, so that the cutter head is driven to rotate to cut a working surface. However, the above structure has extremely high sealing requirements, and once impurities such as silt enter the gear box, the slewing bearing part is blocked, and in addition, the gear engagement is also affected. Therefore, a shield tunneling machine and a fully-mechanized coal mining system are needed to solve the technical problems in the prior art to a certain extent. Disclosure of utility model The application aims to provide a shield machine and a coal mine fully-mechanized coal mining system, which increase the meshing gap between a gear and a gear ring. Therefore, sediment between the gear and the gear ring is easy to discharge from the larger meshing gap, so that the problem of poor meshing between the gear and the gear ring and the technical problem of clamping of the slewing bearing caused by difficult sediment discharge are solved. The application provides a shield tunneling machine, which comprises a cutter head assembly and a driving assembly; The cutter head assembly is provided with a cutting part and a rotary supporting part connected with the cutting part, and the driving assembly is provided with a driving part and a chain wheel connected with the driving part; The rotary support part is provided with a tooth row ring at one end close to the driving assembly, the tooth row ring is provided with meshing parts which are annularly arranged at intervals, and the pitch of the tooth row ring is the same as the pitch of the chain wheel so as to enable the meshing parts to mesh with the chain wheel; The tooth thickness of the sprocket is smaller than the distance between the adjacent meshing parts, so that when the tooth tops of the sprocket are meshed with the meshing parts, a first conduction gap is formed between the tooth tops of the sprocket and the adjacent meshing parts, and the first conduction gap is used for discharging sediment. In the above technical solution, further, the dimension of the sprocket in the axial direction thereof is smaller than the dimension of the tooth row wheel in the axial direction thereof, so that when the tooth tip of the sprocket is meshed with the meshing portion, a second conduction gap is formed between the meshing portion and the sprocket in the axial direction, and the second conduction gap is used for discharging silt. In the above technical solution, when the tooth top of the sprocket is meshed with the meshing portion, a third conduction gap is formed between the tooth root of the sprocket and a wall surface of the meshing portion, which is close to the tooth root of the sprocket, and the third conduction gap is used for discharging sediment. In the above technical scheme, further, the pitch of the tooth row ring and the tooth pitch of the sprocket are both set between 70mm and 90 mm. In the technical scheme, the shield machine further comprises a main beam and a first supporting component, wherein the main beam is divided into a front part and a middle part along the axial direction of the cutterhead component; The cutter head assembly and the driving assembly are arranged at the front part, and the first supporting assembly is arranged at the middle part; The output end of the extending part is connected with the rotating part, and the first supporting part is connected with one end of the rotating part, which is away from the extending part; the second side wall of the first supporting part is connected to the front part through the pushing part, so that the first supporting part is supported on the side wall of the roadway. In the above technical scheme, further, the shield tunneling machine further comprises a second supporting component; The second supporting component comprises an upper supporting part and a lower supporting part, wherein the upper supporting part and the lower supporting part are arranged at the front part and are symmetrically distributed about the axis of the front part, so that the upper supporting