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CN-121993545-A - Coal mine tunneling cutting head device

CN121993545ACN 121993545 ACN121993545 ACN 121993545ACN-121993545-A

Abstract

The invention relates to the technical field of coal mine tunneling equipment, in particular to a coal mine tunneling cutting head device, which comprises a cutting head body and a damping mechanism, wherein a cavity is formed in the cutting head body; the damping mechanism is arranged in the cavity and comprises an inner rod extending along the axial direction of the cutting head body and a radial damping component arranged on the inner rod, the radial damping component is connected with the inner surface of the cavity, and one end of the inner rod penetrates through the cutting head body and is connected with the coupler; the coal mine tunneling cutting head device provided by the invention effectively prevents vibration from being transmitted to follow-up equipment such as the tunneling arm and the like, and remarkably improves the reliability and the service life of a tunneling system.

Inventors

  • WANG JIAHAO
  • GAO FENG
  • FENG YUCHAO

Assignees

  • 天地(榆林)开采工程技术有限公司

Dates

Publication Date
20260508
Application Date
20260129

Claims (10)

  1. 1. A coal mine tunnelling cutting head device, comprising: the cutting head comprises a cutting head body (1), wherein a cavity (11) is formed in the cutting head body (1); The damping mechanism (2) is arranged in the cavity (11), the damping mechanism (2) comprises an inner rod (21) extending along the axial direction of the cutting head body (1) and a radial damping component (22) arranged on the inner rod (21), the radial damping component (22) is connected with the inner surface of the cavity (11), and one end of the inner rod (21) penetrates through the cutting head body (1) and is connected with the coupler (3); Wherein the coupler (3) is connected with the tunneling arm.
  2. 2. The coal mine tunnelling cutting head device as claimed in claim 1, wherein the radial shock absorbing assembly (22) comprises: a collar (221) which is sleeved on the outer peripheral side of the inner rod (21); the first elastic connectors (222) are arranged at intervals along the circumferential direction of the lantern ring (221), and one end, away from the lantern ring (221), of each first elastic connector (222) is connected with the inner surface of the cavity (11) through a mounting plate (223).
  3. 3. The coal mine tunneling cutting head device according to claim 2, wherein a surface of the mounting plate (223) away from the collar (221) is an arc surface structure, and the arc surface structure is matched with the radian of the inner surface of the cavity (11).
  4. 4. The coal mine tunnelling cutting head device as claimed in claim 2, wherein the damper mechanism (2) further comprises an axial damper assembly (23), the axial damper assembly (23) being connected to the radial damper assembly (22) and being disposed adjacent the coupling (3).
  5. 5. The coal mine tunneling cutting head device according to claim 4 wherein said axial shock absorbing assembly (23) includes a plurality of second elastic connectors (231), a plurality of said second elastic connectors (231) being disposed at intervals along the circumference of said inner rod (21), one end of each said second elastic connector (231) being connected to said collar (221) and the other end being connected to a rear end plate of said cutting head body (1).
  6. 6. The coal mine tunneling cutting head device according to claim 5, wherein an axial end portion of the cutting head body (1) is provided with a picking and placing port communicated with the cavity (11), a limiting plate (12) is arranged at the picking and placing port, and the second elastic connecting piece (231) is connected with the limiting plate (12).
  7. 7. The coal mine tunnelling cutting head device as claimed in claim 2, wherein the cavity (11), the coupling (3) and the inner rod (21) are coaxially arranged.
  8. 8. The coal mine tunneling cutting head device according to any one of claims 1-7 further comprising a bit mechanism (4), said bit mechanism (4) being disposed at an end of said cutting head body (1) remote from said coupling (3), said bit mechanism (4) comprising: The hydraulic cylinder (41) is arranged in the cavity (11), a push rod (42) is arranged at the output end of the hydraulic cylinder (41), and the push rod (42) extends along the axial direction of the cutting head body (1) and penetrates through the front end plate of the cutting head body (1); a bit body (43), the bit body (43) being connected to an end of the push rod (42).
  9. 9. The coal mine tunneling cutting head device according to claim 8 is characterized in that a device ring (421) is arranged on the push rod (42), and the drill bit body (43) is detachably connected with the push rod (42) through the device ring (421).
  10. 10. A coal mine tunnelling cutting head device as claimed in any one of claims 1 to 7, wherein the coupling (3) comprises a swivel ring (31) and a connecting ring (32) connected to the swivel ring (31), the connecting ring (32) being fixedly connected to the inner rod (21).

Description

Coal mine tunneling cutting head device Technical Field The invention relates to the technical field of coal mine tunneling equipment, in particular to a coal mine tunneling cutting head device. Background The cutting head is a core working part of mining equipment such as a tunnel boring machine, a coal mining machine and the like, and is mainly used for crushing, cutting and stripping geological media such as rocks, coal beds and the like by driving a surface pick through rotary motion. The cutting head is connected with the tunneling arm through a coupler and bears complex load action in the high-speed rotary cutting process. The cutting head device in the prior art has the problem of vibration transmission in the use process that the cutting head can generate strong radial vibration and impact load when crushing hard rock stratum, and the vibration is directly transmitted to follow-up equipment such as a tunneling arm, a driving motor, a speed reducer and the like through the rigid connection of the cutting head body and a coupling. Due to the lack of effective radial damping measures, radial vibrations cannot be damped and damped between the cutter head body and the ripper arm, resulting in complete transfer of vibrational energy to other components of the ripper system. The long-term vibration impact effect can cause the problems of loosening of connecting pieces, aggravation of bearing abrasion, fatigue damage of equipment and the like, seriously influence the reliability and the service life of the whole tunneling system, increase the maintenance cost and the failure rate, and reduce the tunneling efficiency. Particularly, under the working conditions of complex geological conditions and higher rock stratum hardness, the vibration transmission problem is more remarkable. Therefore, there is a need for a cutting head device that can provide a radial damping mechanism inside the cutting head body to effectively attenuate the transmission of radial vibrations to the ripper arm, protecting the ripper equipment from excessive vibrations. Disclosure of Invention The invention provides a coal mine tunneling cutting head device which effectively prevents vibration from being transmitted to follow-up equipment such as a tunneling arm and the like, and remarkably improves the reliability and the service life of a tunneling system. The invention provides a coal mine tunneling cutting head device which comprises a cutting head body, wherein a cavity is formed in the cutting head body, a damping mechanism is arranged in the cavity and comprises an inner rod extending along the axial direction of the cutting head body and a radial damping component arranged on the inner rod, the radial damping component is connected with the inner surface of the cavity, one end of the inner rod penetrates through the cutting head body and is connected with a coupling, and the coupling is connected with a tunneling arm. In one possible implementation, the radial shock absorbing assembly comprises a collar sleeved on the outer peripheral side of the inner rod, and a plurality of first elastic connecting pieces arranged at intervals along the circumferential direction of the collar, wherein one end of each first elastic connecting piece, which is far away from the collar, is connected with the inner surface of the cavity through a mounting plate. In one possible implementation, the side of the mounting plate away from the collar is a cambered surface structure, which is matched with the radian of the inner surface of the cavity. In one possible implementation, a plurality of radial shock absorbing assemblies are provided, the plurality of radial shock absorbing assemblies being spaced apart along the axial direction of the inner rod. In one possible implementation, the damping mechanism further comprises an axial damping member connected to the radial damping member and disposed adjacent the coupling. In one possible implementation, the axial shock absorbing assembly includes a plurality of second elastic connectors disposed at intervals along the circumference of the inner rod, one end of each second elastic connector being connected with the collar, and the other end being connected with the rear end plate of the cutter head body. In one possible implementation manner, the axial end of the cutting head body is provided with a picking and placing port communicated with the cavity, a limiting plate is arranged at the picking and placing port, and the second elastic connecting piece is connected with the limiting plate. In one possible implementation, the first elastic connection piece and the second elastic connection piece each include a telescopic tube and a damping spring sleeved on the periphery of the telescopic tube. In one possible implementation, the cavity, the coupling and the inner rod are coaxially arranged. In one possible implementation mode, the drill bit mechanism is arranged at one end, far away from the coupler, of