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CN-224200988-U - Self-adaptive lubrication cooling device for cutting arm of coal mine heading machine

CN224200988UCN 224200988 UCN224200988 UCN 224200988UCN-224200988-U

Abstract

The utility model discloses a self-adaptive lubrication cooling device for a cutting arm of a coal mine heading machine, which relates to the technical field of lubrication cooling devices and comprises a cutting main shaft, a connecting cylinder, a front bearing, a rear bearing, an oil storage cavity, a communicating piece and an annular sealing ring, wherein the connecting cylinder is rotatably sleeved outside the cutting main shaft, the front bearing is arranged between the inner wall of the front end of the connecting cylinder and the cutting main shaft, the rear bearing is arranged between the inner wall of the rear end of the connecting cylinder and the cutting main shaft, the oil storage cavity is formed between the inner wall of the connecting cylinder, the outer wall of the cutting main shaft and the axial end surfaces of the front bearing and the rear bearing, the communicating piece is arranged in the middle of the oil storage cavity, the annular sealing ring comprises an annular sealing ring and a communicating pipe, and the oil storage cavity is divided into a front cavity and a rear cavity by the annular sealing ring.

Inventors

  • ZHANG WENXIONG

Assignees

  • 张文雄

Dates

Publication Date
20260505
Application Date
20250708

Claims (6)

  1. 1. Colliery entry driving machine cutting arm self-adaptation lubrication cooling device, its characterized in that includes: A cutting spindle (1); the connecting cylinder (2) is rotatably sleeved outside the cutting main shaft (1); the front bearing (3) is arranged between the inner wall of the front end of the connecting cylinder (2) and the cutting main shaft (1); The rear bearing (4) is arranged between the inner wall of the rear end of the connecting cylinder (2) and the cutting main shaft (1); The oil storage cavity (5) is formed among the inner wall of the connecting cylinder (2), the outer wall of the cutting main shaft (1) and the axial end surfaces of the front bearing (3) and the rear bearing (4); The oil storage cavity (5) is divided into a front cavity and a rear cavity by the aid of the annular sealing ring (61), the communicating piece (6) is arranged in the middle of the Chu Youqiang, the communicating piece (6) comprises the annular sealing ring (61) and the communicating pipe (62), the annular sealing ring (61) is arranged in the middle of the oil storage cavity (5), the oil storage cavity (5) is divided into the front cavity and the rear cavity, the communicating pipe (62) axially penetrates through the annular sealing ring (61) and extends to the front side and the rear side of the annular sealing ring (61) respectively, the extending parts are located in the front cavity and the rear cavity, and the front cavity and the rear cavity are communicated through the communicating pipe (62).
  2. 2. The self-adaptive lubrication and cooling device for the cutting arm of the coal mine heading machine is characterized in that the oil storage cavity (5) is formed by the inner wall of the connecting cylinder (2), the outer wall of the cutting main shaft (1), the rear end face of the inner ring of the front bearing (3) and the front end face of the inner ring of the rear bearing (4) in a surrounding mode.
  3. 3. The self-adaptive lubrication cooling device for the cutting arm of the coal mine heading machine according to claim 2, wherein the communicating pipe (62) is fixedly arranged on the annular sealing ring (61), and the communicating pipe (62) is positioned in lubricating oil of the front cavity and the rear cavity when the cutting main shaft (1) is vertical.
  4. 4. The self-adaptive lubrication cooling device for the cutting arm of the coal mine heading machine, which is disclosed by claim 3, is characterized in that the outer peripheral surface of the annular sealing ring (61) is in sealing connection with the inner wall of the connecting cylinder (2), and the inner peripheral surface of the annular sealing ring (61) is in sealing rotation connection with the outer wall of the cutting main shaft (1).
  5. 5. The self-adaptive lubrication cooling device for the cutting arm of the coal mine heading machine according to claim 4, wherein an outer sealing part which is used for being in sealing fit with the inner wall of the connecting cylinder (2) is arranged on the outer peripheral surface of the annular sealing ring (61), and an annular inner groove which is matched with the outer sealing part is arranged on the inner wall of the connecting cylinder (2).
  6. 6. The self-adaptive lubrication cooling device for the cutting arm of the coal mine heading machine according to claim 5, wherein a plurality of communicating pipes (62) are arranged, and the annular arrays are arranged on the annular sealing ring (61) in a penetrating manner.

Description

Self-adaptive lubrication cooling device for cutting arm of coal mine heading machine Technical Field The utility model relates to the technical field of lubrication and cooling devices, in particular to a self-adaptive lubrication and cooling device for a cutting arm of a coal mine heading machine. Background In the cutting process of the cantilever heading machine, the cutting arm can cut up and down, left and right. When the upper rock stratum is cut, the front part of the cutting arm is lifted upwards, the angle between the cutting arm and the horizontal plane can reach 45 degrees, and at the moment, most of lubricating oil can be deposited at the rear part of the cutting arm under the action of dead weight, so that a sealing element and a bearing at the front end of the cutting arm cannot be fully lubricated by the lubricating oil. The lifting time of the cutting arm is about one third of the cutting time of the heading machine. Lack of adequate lubrication by the oil will greatly reduce the life of the cutter arm front seals and bearings. Thus, the use and maintenance period of the heading machine is shortened, the serious waste of manpower and material resources is brought, and meanwhile, the production work of a user is influenced. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model provides a self-adaptive lubrication cooling device for a cutting arm of a coal mine heading machine. In order to achieve the above object, the technical scheme of the present utility model is as follows: self-adaptive lubrication and cooling device for a cutting arm of a coal mine heading machine comprises: Cutting a main shaft; The connecting cylinder is rotatably sleeved outside the cutting main shaft; the front bearing is arranged between the inner wall of the front end of the connecting cylinder and the cutting main shaft; the rear bearing is arranged between the inner wall of the rear end of the connecting cylinder and the cutting main shaft; The oil storage cavity is formed among the inner wall of the connecting cylinder, the outer wall of the cutting main shaft and the axial end surfaces of the front bearing and the rear bearing; The oil storage cavity comprises an oil storage cavity, a communicating piece, a communicating pipe and a lubricating oil part, wherein the communicating piece is arranged in the middle of the oil storage cavity and comprises an annular sealing ring and a communicating pipe, the annular sealing ring is arranged in the middle of the oil storage cavity and divides the oil storage cavity into a front cavity and a rear cavity, the communicating pipe axially penetrates through the annular sealing ring and extends to the front side and the rear side of the annular sealing ring respectively, the extending parts are positioned in the front cavity and the rear cavity, and the front cavity and the rear cavity are communicated through the communicating pipe. Preferably, the oil storage cavity is defined by the inner wall of the connecting cylinder, the outer wall of the cutting main shaft, the rear end face of the inner ring of the front bearing and the front end face of the inner ring of the rear bearing. Preferably, the communicating pipe is fixedly installed on the annular sealing ring, and the communicating pipe is positioned in the lubricating oil of the front cavity and the rear cavity when the cutting main shaft is vertical. Preferably, the outer peripheral surface of the annular sealing ring is in sealing connection with the inner wall of the connecting cylinder, and the inner peripheral surface of the annular sealing ring is in sealing and rotating connection with the outer wall of the cutting main shaft. Preferably, the outer peripheral surface of the annular sealing ring is provided with an outer sealing part which is used for being in sealing fit with the inner wall of the connecting cylinder, and the inner wall of the connecting cylinder is provided with an annular inner groove which is matched with the outer sealing part. Preferably, the communicating pipes are arranged in a plurality, and the annular array is arranged on the annular sealing ring in a penetrating way. Compared with the prior art, the utility model has the beneficial effects that: 1. The bearing is ensured to be fully lubricated, namely partial flow and distribution of the lubricating oil of the front cavity and the rear cavity are realized through the communicating pipe, and even if the cutting main shaft is in a complex posture of lifting or cutting downwards, the front bearing and the rear bearing can still be fully lubricated, so that a lubrication blind area is avoided; 2. the dynamic pressure difference driving circulation is that when the cutting main shaft rotates, the front cavity and the rear cavity generate pressure difference, so that lubricating oil is promoted to circularly flow through the communicating pipe, heat is continuously taken away, lubrication is suppl