CN116717249A - Three-support walking assembly of thin coal seam coal mining machine - Google Patents
Three-support walking assembly of thin coal seam coal mining machine Download PDFInfo
- Publication number
- CN116717249A CN116717249A CN202310674029.7A CN202310674029A CN116717249A CN 116717249 A CN116717249 A CN 116717249A CN 202310674029 A CN202310674029 A CN 202310674029A CN 116717249 A CN116717249 A CN 116717249A
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- CN
- China
- Prior art keywords
- shaft
- bearing
- support
- assembly
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005065 mining Methods 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 210000004907 gland Anatomy 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 7
- 238000005461 lubrication Methods 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
Abstract
The invention relates to a three-support walking assembly of a low seam coal mining machine, and belongs to the technical field of coal mining machines. The three-support walking assembly of the low seam coal mining machine comprises walking wheels, a transmission shaft and a supporting shaft; the travelling wheel is connected to a rear shaft neck of the transmission shaft, the supporting shaft is connected to the rear end part of the transmission shaft, and the travelling wheel is fixed on the transmission shaft by matching the supporting shaft with the transmission shaft; a first bearing is arranged on the front journal of the transmission shaft; a second bearing is arranged on the rear journal of the transmission shaft and is adjacent to the front end part of the travelling wheel; and a third bearing is arranged on the shaft neck of the rear end part of the support shaft. According to the invention, the support shaft and the third bearing are added in the gland, so that the transmission shaft is only subjected to torque, and the reliability of a transmission system is improved.
Description
Technical Field
The invention relates to the technical field of coal mining machines, in particular to a three-support walking assembly of a low seam coal mining machine.
Background
The thin seam intelligent coal mining machine has high power density and large limit on structural size, and in order to reduce the thickness of the machine body as much as possible so as to reduce the height of the machine surface and increase the coal passing space, a traction part of the thin seam coal mining machine usually adopts a semi-suspension machine body arrangement structure, namely a planetary mechanism with larger diameter and a traction motor and the like are arranged on the side of a coal wall, so that the machine body thickness above a coal passing channel is not influenced, and a traditional traveling box is cancelled. As shown in fig. 1, there is only one traveling wheel assembly 11, the traveling wheel assembly 11 and the traction part transmit torque through a spline shaft 12, the axial direction is fastened by a hydraulic bolt assembly, and the traveling wheel is installed in a cantilever type. The structure can obviously reduce the height of the machine face of the coal mining machine by only needing one travelling wheel, and becomes a common structure of the existing thin seam coal mining machine.
In actual operation, however, the torque shaft in this configuration is subjected not only to torque transmission but also to bending moments from the road wheels and shear moments at the cantilever arms. When the transmission shaft under severe working conditions is seriously loaded, the long shaft is often broken and invalid, and the long shaft is replaced by integrally dismantling the travelling wheel due to the narrow working surface space of the thin coal seam, so that the production of the mining party is seriously influenced.
Based on the above problems, a novel dual-support structure (such as CN110107293 a) appears in recent years, in order to improve the stress condition of the transmission shaft, when a thin coal seam model is newly designed, the cantilever type installation mode of the travelling wheel is often adjusted to be dual-support travelling wheel installation, as shown in fig. 2, the travelling wheel 21 is installed in a cantilever type through the front end bearing 22 and the rear end bearing 23, so that the impact load received by the travelling wheel 21 is transmitted to the shell through the two end supports, and the transmission shaft 24 only receives torque, thereby greatly improving the reliability of the torque shaft.
Although the double-support structure can effectively improve the stress condition of the transmission shaft, the structure is complex, the installation is difficult, the fault point is increased, and the transmission shaft and the front traveling wheel assembly are not interchangeable. Especially for the coal mining machine of various models which have been popularized in the market, if the two support structures are replaced for improving the stress condition of the transmission shaft, the traction box shell needs to be returned to the factory for transformation and most of the travelling wheel components are replaced, the transformation difficulty is high, and the equipment management maintenance after transformation and upgrading is not facilitated.
Disclosure of Invention
The invention aims to solve the problems and provides a three-support traveling assembly of a low seam mining machine.
The purpose of the invention is realized in the following way:
a three-support walking assembly of a low seam coal mining machine comprises walking wheels, a transmission shaft and a supporting shaft; the travelling wheel is connected to a rear shaft neck of the transmission shaft, the supporting shaft is connected to the rear end part of the transmission shaft, and the travelling wheel is fixed on the transmission shaft by matching the supporting shaft with the transmission shaft;
a first bearing is arranged on the front journal of the transmission shaft; a second bearing is arranged on the rear journal of the transmission shaft and is adjacent to the front end part of the travelling wheel; and a third bearing is arranged on the shaft neck of the rear end part of the support shaft.
The travelling wheel is connected to the rear shaft neck of the transmission shaft through a spline, and the supporting shaft is fixedly connected to the rear end part of the transmission shaft through a long screw so as to fix the travelling wheel on the transmission shaft.
The travelling wheel, the transmission shaft and the support shaft are erected and installed in the installation seat through the first bearing, the second bearing and the third bearing;
the three-support traveling assembly of the low seam mining machine is installed in the traction part of the low seam mining machine through the installation seat.
The rear end part of the mounting seat is provided with a gland and an end cover assembly; the third bearing is arranged in the gland, and is matched with the end cover assembly to position and fix the third bearing in the mounting seat.
The mounting seat is fastened on a traction part of the thin seam coal mining machine through a hydraulic bolt assembly.
And the gland is provided with an oil cup assembly at a position corresponding to the third bearing and used for injecting oil for lubricating the third bearing.
The mounting seat is provided with an oil dripping lubrication assembly at a position corresponding to the travelling wheel and used for oiling and lubricating the travelling wheel.
The beneficial effects of the invention are as follows:
1) According to the invention, the support shaft and the third bearing are added in the gland, so that the transmission shaft is only subjected to torque, and the reliability of a transmission system is improved.
2) According to the invention, the support shaft is matched with the transmission shaft to realize radial fixation, and is matched with the travelling wheel at the same time, so that the axial and radial positioning fixation of the travelling wheel can be realized at the same time, and the connection is simple and reliable.
3) The gland provided by the invention is used for fixing the travelling wheel assembly, simultaneously bearing the radial force from the travelling wheel and transmitting the radial force to the shell of the traction part, so that the multipoint support is realized, and the reliability of an internal system can be greatly improved under the condition that only the shell of the traction part is stressed.
4) By adopting the structure of the invention, for the existing coal mining machine in the market, only the gland, the support shaft and the bearing are required to be replaced, and the travelling wheel, the transmission shaft, the mounting seat and the like are not required to be replaced, and the shell of the traction part is not required to be modified, so that the modification and upgrading of the original machine type can be realized, the interchangeability is improved, and the structure has better popularization feasibility than the existing double-support structure.
Drawings
Fig. 1 shows a schematic structural view of a common traveling device of a conventional thin seam shearer.
Fig. 2 shows a schematic structural view of a double-support traveling device of a conventional thin seam shearer.
FIG. 3 shows a schematic view of an embodiment of the triple support traveling assembly of the low seam shearer of the present invention.
Fig. 4 shows a schematic installation of the tractor of the shearer of fig. 3.
FIG. 5 shows a left side view of FIG. 4
The reference numerals are explained as follows:
1-a hydraulic bolt assembly;
2-three support walking components;
201-an end cap assembly; 202-a support shaft; 203-a third bearing; 204-capping; 205-oil cup assembly; 206-drip lubrication assembly; 207-travelling wheels; 208-a second bearing; 209-mounting base; 210-a transmission shaft; 211-a first bearing; 212-guiding slipper;
3-traction part.
Detailed Description
Various embodiments of the present invention will be described with reference to the accompanying drawings. Elements having similar structures or functions will be denoted by the same reference numerals throughout the specification and the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The dimensions shown in the drawings are for clarity of description only and do not limit the scale or exhaustive description of the invention nor limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
First, the invention discloses a three-support walking assembly of a low seam mining machine. FIG. 3 shows a schematic view of an embodiment of the triple support traveling assembly of the low seam shearer of the present invention.
As shown in fig. 3, 4 and 5, a three-support traveling assembly of a low seam shearer includes a traveling wheel 207, a transmission shaft 210 and a support shaft. Wherein, the walking wheel 207 is connected to the rear axle journal of the transmission shaft 210, the support shaft 202 is connected to the rear end of the transmission shaft 210, and the support shaft 202 and the transmission shaft 210 cooperate to fix the walking wheel 207 to the transmission shaft 210. Specifically, the traveling wheel 207 may be spline-coupled to a rear journal of the transmission shaft 210, and the support shaft 202 is fastened to a rear end portion of the transmission shaft 210 by a long screw to fix the traveling wheel 207 to the transmission shaft 210.
A first bearing 211 is provided on the front journal of the drive shaft 210. A second bearing 208 is provided on the rear journal of the drive shaft 210, and the second bearing 208 abuts the front end of the road wheel 207. A third bearing 203 is provided on the journal of the rear end portion of the support shaft 202.
In this embodiment, by adding the support shaft 202 and the third bearing 203 to form a three-support structure, the bending moment and the shearing force applied to the torque shaft are improved on the basis of not changing the original torque shaft structure, so that the transmission shaft 210 is only subjected to torque, and the reliability of the transmission system is improved. And the support shaft 202 is matched with the transmission shaft 210 to realize radial fixation and matched with the travelling wheel 207, so that the axial and radial positioning fixation of the travelling wheel 207 can be realized at the same time, and the connection is simple and reliable.
In yet another embodiment, the three-support traveling assembly of the low seam mining machine further comprises a mounting base 209, and the traveling wheel 207, the transmission shaft 210 and the support shaft are mounted in the mounting base 209 by the first bearing 211, the second bearing 208 and the third bearing 203. The three-support traveling assembly 2 of the low seam mining machine is mounted inside the traction part 3 of the low seam mining machine through a mounting seat 209. Specifically, the mount 209 is fastened to the traction section 3 mounted to the low seam shearer by the hydraulic bolt assembly 1. The rear end of the mount 209 is provided with a gland 204 and end cap assembly 201. The third bearing 203 is disposed within the gland 204 and is engaged by the end cap assembly 201 to locate and secure the third bearing 203 within the mount 209.
In this embodiment, the gland 204 is used to fix the travelling wheel 207 assembly and simultaneously bear the radial force from the travelling wheel 207 and transmit the force to the housing of the traction part 3, so that multi-point support is realized, and only the housing of the traction part 3 is stressed, thereby greatly improving the reliability of the internal system. By adopting the device structure in the embodiment, for the existing coal mining machine in the market, only the gland 204, the support shaft 202 and the bearing are required to be replaced, and the travelling wheel 207, the transmission shaft 210, the mounting seat 209 and the like are not required to be replaced, and the shell of the traction part 3 is not required to be modified, so that the modification and upgrading of the original machine type can be realized, the interchangeability is improved, and the device has better popularization feasibility than the existing double-support structure.
In a further embodiment, an oil cup assembly 205 is provided on the gland 204 at a position corresponding to the third bearing 203 for oiling the third bearing 203 with lubrication.
In yet another embodiment, the mount 209 is provided with a drip lubrication assembly 206 corresponding to the location of the road wheel 207 for oiling lubrication to the road wheel 207.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. The three-support walking assembly of the low seam coal mining machine is characterized by comprising walking wheels, a transmission shaft and a supporting shaft; the travelling wheel is connected to a rear shaft neck of the transmission shaft, the supporting shaft is connected to the rear end part of the transmission shaft, and the travelling wheel is fixed on the transmission shaft by matching the supporting shaft with the transmission shaft;
a first bearing is arranged on the front journal of the transmission shaft; a second bearing is arranged on the rear journal of the transmission shaft and is adjacent to the front end part of the travelling wheel; and a third bearing is arranged on the shaft neck of the rear end part of the support shaft.
2. The three support travel assembly of a low seam mining machine of claim 1, wherein the travel wheels are splined to a rear journal of the drive shaft, and the support shaft is secured to a rear end of the drive shaft by a long screw to secure the travel wheels to the drive shaft.
3. The three support travel assembly of a low seam mining machine of claim 2, further comprising a mounting seat, wherein the travel wheel, the drive shaft, and the support shaft are mounted in the mounting seat by the first bearing, the second bearing, and the third bearing;
the three-support traveling assembly of the low seam mining machine is installed in the traction part of the low seam mining machine through the installation seat.
4. The three-support traveling assembly of the low seam mining machine according to claim 3, wherein a gland and an end cover assembly are arranged at the rear end part of the mounting seat; the third bearing is arranged in the gland, and is matched with the end cover assembly to position and fix the third bearing in the mounting seat.
5. The three support walk assembly of claim 3, wherein the mount is secured to a tractor mounted on the shearer by a hydraulic bolt assembly.
6. The three support traveling assembly of a low seam mining machine according to claim 4, wherein an oil cup assembly is provided on the gland at a position corresponding to the third bearing for injecting oil for lubrication of the third bearing.
7. The three-support traveling assembly of the low seam mining machine according to claim 4, wherein the mounting seat is provided with an oil dripping lubrication assembly at a position corresponding to the traveling wheel for oiling and lubricating the traveling wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310674029.7A CN116717249A (en) | 2023-06-08 | 2023-06-08 | Three-support walking assembly of thin coal seam coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310674029.7A CN116717249A (en) | 2023-06-08 | 2023-06-08 | Three-support walking assembly of thin coal seam coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116717249A true CN116717249A (en) | 2023-09-08 |
Family
ID=87874610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310674029.7A Pending CN116717249A (en) | 2023-06-08 | 2023-06-08 | Three-support walking assembly of thin coal seam coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116717249A (en) |
-
2023
- 2023-06-08 CN CN202310674029.7A patent/CN116717249A/en active Pending
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