CN-115929300-B - High-power rocker arm cooling system of coal mining machine

CN115929300BCN 115929300 BCN115929300 BCN 115929300BCN-115929300-B

Abstract

The invention relates to a high-power rocker arm cooling system of a coal mining machine, which comprises a rocker arm shell and a planetary mechanism, wherein a high-speed section cutting transmission mechanism installation cavity and a low-speed section cutting transmission mechanism installation cavity which are communicated left and right are arranged in the rocker arm shell, the high-speed section cutting transmission mechanism installation cavity is close to a machine body connection end and a coal wall side, a front lower cavity is arranged below the high-speed section cutting transmission mechanism installation cavity, the front lower cavity and the coal wall side are communicated up and down, the axis of the planetary mechanism is arranged on the coal wall side of a roller connection end of the rocker arm shell in a front-back extending mode, a planet carrier of the planetary mechanism comprises a planet carrier body, a sun wheel installation cavity and a planet wheel installation cavity which are positioned at the rear part and an oil cavity which is positioned at the front part are formed in the planet carrier body, a plurality of axial oil holes which surround the center through holes are formed in a partition wall between the oil cavity and the sun wheel installation cavity, the diameter of the oil cavity is not smaller than the diameter of the sun wheel installation cavity, and first forced cooling devices and second forced cooling devices are respectively arranged in the front lower cavity and the oil cavity. The invention can solve the problem of outstanding lubrication shortage phenomenon when the high-power rocker arm works at an angle.

Inventors

SHI CHUNXIANG
ZHANG LIQIANG
WANG ZHENQIAN
HU JING
HU TAO
DONG CHAO
GU ENYANG
QIAN LIQUAN
GUO DAI

Assignees

天地上海采掘装备科技有限公司
中煤科工集团上海有限公司

Dates

Publication Date: 20260512
Application Date: 20230103

Claims (12)

1. A coal-winning machine high-power rocking arm cooling system, characterized by: the radial cooling device comprises a rocker arm shell and a planetary mechanism, wherein two ends of the rocker arm shell in the length direction are a machine body connecting end and a roller connecting end respectively, a high-speed section cutting transmission mechanism mounting cavity and a low-speed section cutting transmission mechanism mounting cavity which are communicated left and right are arranged in the rocker arm shell, the high-speed section cutting transmission mechanism mounting cavity is close to the machine body connecting end and the coal wall side, a front lower cavity is arranged below the high-speed section cutting transmission mechanism mounting cavity, the high-speed section cutting transmission mechanism mounting cavity is communicated with the front lower cavity up and down, a first forced cooling device group is arranged in the front lower cavity, a planetary mechanism axis extends back and forth to be arranged on the coal wall side of the roller connecting end of the rocker arm shell, a planetary carrier body in the planetary carrier body comprises a sun gear mounting cavity and a planetary gear mounting cavity which are arranged at the rear part, an oil cavity which is arranged at the front part, the planetary gear mounting cavity surrounds the periphery of the sun gear oil cavity mounting cavity and is communicated with the sun gear mounting cavity, a plurality of oil holes are arranged at the periphery of radial through holes which are arranged at the periphery of the sun gear oil cavity mounting cavity, a plurality of radial through holes are arranged at the periphery of the radial outer cylinder surface radial through holes which are arranged at the periphery of the sun gear oil cavity, the radial through hole diameter of the cooling device is arranged at the radial outer cylinder wall side of the radial through hole, and the radial through hole is arranged at the radial outer diameter inside the radial through hole is arranged outside the radial through hole, and the cooling wall is provided.
2. The high-power rocker arm cooling system of the coal mining machine of claim 1, wherein the first forced cooling device group comprises one or more first forced cooling devices, the first forced cooling devices comprise a cooling medium circulation pipe group, a cooling medium inlet and outlet seat and a communication seat, the cooling medium circulation pipe group comprises a plurality of inflow pipes and a plurality of outflow pipes which extend in the same direction and are arranged at intervals, two ends of the cooling medium circulation pipe group are respectively arranged on the cooling medium inlet and outlet seat and the communication seat, a plurality of inflow pore channels and a plurality of outflow pore channels are arranged in the cooling medium inlet and outlet seat, the outlets of all inflow pore channels and the inlets of all outflow pore channels are respectively gathered on the same end face of the cooling medium inlet and outlet seat and occupy half areas of the end face, the outlets of the inflow pore channels and the inlets of the outflow pore channels are respectively connected and communicated with the corresponding end faces of the inflow pipes and the outflow pipes in a one-to-one mode, the end faces of the cooling medium inlet and the outflow pore channels are respectively communicated with the radial outer side faces of the cooling medium inlet and outlet seat, the communication seat is provided with a plurality of channel interfaces which are communicated with each other inside, the channel interfaces are respectively arranged at the end faces of the cooling medium circulation pipe group, the cooling medium inlet and the outlet seat are respectively arranged at the same step-to be communicated with the radial step-shaped, the cooling medium inlet and the radial sealing area, the cooling pore channel is respectively arranged in a sealing area, and the radial sealing area, and the cooling medium inlet and the cooling device is respectively arranged in a sealing area, the inlet of the inflow pore canal of the first forced cooling device and the outlet of the outflow pore canal of the first forced cooling device are respectively formed into a medium inlet and a medium outlet of the first forced cooling device group, when a plurality of the first forced cooling devices exist, the first forced cooling devices are connected in series according to the flow direction of cooling medium, the inlet of the inflow pore canal of the first forced cooling device at the head end and the outlet of the outflow pore canal of the first forced cooling device at the tail end are respectively formed into a medium inlet and a medium outlet of the first forced cooling device group, a medium inflow hole and a medium outflow hole are arranged in a rocker arm shell, the medium inflow hole and the medium outflow hole are respectively connected and communicated with the medium inlet and the medium outlet of the first forced cooling device group, or a water jacket is arranged in the rocker arm shell, and the first forced cooling device group is connected in series on a water path of the water jacket.
3. The high-power rocker arm cooling system of the coal mining machine, as set forth in claim 2, wherein the first forced cooling device further comprises a welding seat, an end part of the communication seat, which is far away from the cooling medium circulation pipe group, is inserted into one end of the welding seat and is in clearance fit with the shaft hole of the welding seat, an inclined plane is arranged outside the other end of the welding seat, a bottom cavity wall of the front lower cavity, which is close to the connecting end of the roller, is an inclined plane transition cavity wall, the height of the inclined plane transition cavity wall is higher as the inclined plane transition cavity wall is closer to the connecting end of the roller, the cooling medium inlet and outlet seat is arranged on an oil cylinder connecting arm of the rocker arm shell, and the inclined plane on the welding seat is bonded and welded on the inclined plane transition cavity wall.
4. The high-power rocker arm cooling system of the coal mining machine of claim 3, wherein the outer cylindrical surface of the communicating seat matched with the shaft hole of the welding seat is provided with a plurality of annular grooves, and vibration reduction O-shaped rings are arranged in the annular grooves.
5. The high-power rocker arm cooling system of claim 2,3 or 4, wherein the stepped cylindrical surface of the cooling medium inlet and outlet seat is provided with an inlet flat-bottom slot and an outlet flat-bottom slot, the inlets of all inflow channels are arranged on the bottom surface of the inlet flat-bottom slot, and the outlets of all outflow channels are arranged on the bottom surface of the outlet flat-bottom slot.
6. The high-power rocker arm cooling system of the coal mining machine, as set forth in claim 5, characterized in that a mining side of a high-speed section cutting transmission mechanism installation cavity in the rocker arm shell is provided with a left motor installation cavity and a right motor installation cavity which extend back and forth respectively, a motor cavity is arranged in a partition cavity wall between the two motor installation cavities, the high-speed section cutting transmission mechanism installation cavity is communicated with the motor cavity in front and back, a clutch cavity is arranged on the outer side of the motor installation cavity, which is close to a roller connecting end, the high-speed section cutting transmission mechanism installation cavity is communicated with the clutch cavity in front and back, and a rear lower cavity is arranged below the front part of the motor installation cavity and is communicated with the rear lower cavity in front and back.
7. The high-power rocker arm cooling system of a coal mining machine according to claim 1,2, 3 or 4, wherein the second forced cooling device comprises a cooling seat, a cooling jacket and a cooling medium flow pipe, the cooling jacket is of a hollow tubular structure, the front part of the cooling jacket is inserted into and fixedly installed in the cooling seat, the middle rear part of the cooling jacket is suspended, a cooling medium inflow groove and a cooling medium outflow groove are formed in the front pipe wall of the cooling jacket, the cooling medium outflow groove is communicated with a cooling medium outflow channel in the cooling seat, a plurality of cooling medium inflow drain holes and a plurality of cooling medium outflow drain holes which extend forwards and backwards are further formed in the pipe wall of the cooling jacket, the front ends of the cooling medium inflow drain holes and the cooling medium outflow drain holes are respectively communicated with the cooling medium inflow groove and the cooling medium outflow groove, the rear ends of the cooling medium inflow drain holes and the cooling medium outflow drain holes are respectively communicated with an annular groove formed in the rear pipe wall of the cooling jacket, the front shaft hole of the cooling medium flow pipe is matched and fixedly installed in an inner hole of the cooling jacket, the middle part of the cooling medium flow pipe is positioned in the cooling jacket and keeps a space between the cooling jacket, the cooling medium inflow drain holes and the cooling medium flow pipe wall is suspended outside the cooling jacket, the cooling medium flow through holes are formed in the cooling medium flow channels, the cooling medium flow through holes are respectively, and the front ends of the cooling medium flow through holes are laterally and the cooling medium flow through the cooling device.
8. The high-power rocker arm cooling system of claim 7, wherein the outlet of the cooling medium outflow channel in the cooling seat is connected with a joint, and the joint is arranged along the radial extension of the cooling seat.
9. The high-power rocker arm cooling system of claim 7, wherein the outer surface and the inner surface of the middle rear part of the cooling sleeve are provided with corrugated structures.
10. The high-power rocker arm cooling system of the coal mining machine of claim 7, wherein a water jacket is arranged in the rocker arm shell, a high-speed end bearing seat and a low-speed end bearing seat are respectively arranged on the coal wall side cavity wall of the high-speed section cutting transmission mechanism installation cavity and the mining space side cavity wall of the low-speed section cutting transmission mechanism installation cavity, annular cooling grooves and two connecting grooves are respectively arranged in the high-speed end bearing seat and the low-speed end bearing seat, and the annular cooling grooves are connected to a waterway of the water jacket in series through the two connecting grooves on the same bearing seat.
11. The high-power rocker arm cooling system of the coal mining machine according to claim 5, wherein the second forced cooling device comprises a cooling seat, a cooling sleeve and a cooling medium flow pipe, the cooling sleeve is of a hollow tubular structure, the front part of the cooling sleeve is inserted into and fixedly installed in the cooling seat, the middle rear part of the cooling sleeve is overhanging, a cooling medium inflow groove and a cooling medium outflow groove are formed in the front pipe wall of the cooling sleeve, the cooling medium outflow groove is communicated with a cooling medium outflow channel in the cooling seat, a plurality of cooling medium inflow exhaust holes and a plurality of cooling medium outflow exhaust holes which extend forwards and backwards are formed in the pipe wall of the cooling sleeve, the front ends of the cooling medium inflow exhaust holes and the cooling medium outflow exhaust holes are respectively communicated with the cooling medium inflow groove and the cooling medium outflow groove, the rear ends of the cooling medium inflow exhaust holes and the cooling medium outflow exhaust holes are respectively communicated with an annular groove formed in the pipe wall of the rear part of the cooling sleeve, the middle part of the cooling medium flow pipe is positioned in the cooling sleeve relatively fixedly installed in an inner hole of the cooling sleeve, the middle part of the cooling sleeve is kept at a distance from the cooling sleeve, the rear part of the cooling medium flow pipe extends out of the cooling sleeve, the cooling medium flow pipe is formed in the cooling medium flow through holes, the cooling medium flow through holes are respectively, the front ends of the cooling medium inflow holes and the cooling medium flow through holes are respectively, and the cooling medium flow through the cooling medium flow channels and the cooling medium flow through the cooling channels are laterally and flow through the cooling medium flow through the cooling device respectively.
12. The high-power rocker arm cooling system of the coal mining machine, as set forth in claim 6, characterized in that the second forced cooling device comprises a cooling seat, a cooling jacket and a cooling medium flow pipe, the cooling jacket is of a hollow tubular structure, the front part of the cooling jacket is inserted into and fixedly installed in the cooling seat, the middle rear part is overhanging, a cooling medium inflow groove and a cooling medium outflow groove are arranged in the front pipe wall of the cooling jacket, the cooling medium outflow groove is communicated with a cooling medium outflow channel in the cooling seat, a plurality of cooling medium inflow exhaust holes and a plurality of cooling medium outflow exhaust holes which extend forwards and backwards are also arranged in the pipe wall of the cooling jacket, the front ends of the cooling medium inflow exhaust holes and the cooling medium outflow exhaust holes are respectively communicated with the cooling medium inflow groove and the cooling medium outflow groove, the rear ends of the cooling medium inflow exhaust holes and the cooling medium outflow exhaust holes are respectively communicated with an annular groove in the pipe wall at the rear part of the cooling jacket, the middle part is positioned in the cooling jacket relatively fixedly installed in an inner hole of the cooling jacket, the middle part is positioned in the cooling jacket and keeps a space with the cooling jacket, the rear part extends out of the cooling jacket, the cooling medium flow pipe is provided with the cooling medium flow through holes, the front ends and the cooling medium flow pipe front ends are respectively communicated with the cooling medium flow through holes and the cooling medium flow out through the cooling medium flow channels laterally.

Description

High-power rocker arm cooling system of coal mining machine Technical Field The invention relates to a high-power rocker arm cooling system of a coal mining machine, which can better meet the cooling and lubricating requirements when rocker arms are in respective inclination angle states. Background With the complexity of mining conditions, such as the occurrence of gangue inclusion and faults of more and more mining objects, the frequency of rock cutting is greatly increased, so that the requirement and the production of high power of the thin seam coal mining machine are continuously put forward and developed, and the single rocker arm power is developed from early 100KW to current 500KW. In the large-power design process of the rocker arm, the service lives of gears and bearings of a transmission system are mainly considered, however, due to the fact that the internal space of an existing rocker arm shell 1' (see figure 18) is limited, new problems are often brought about, for example, the efficiency loss caused by high power and the heating problem of the rocker arm caused by oil stirring loss cannot be well solved, the lubricating effect is weakened due to insufficient cooling, the effective oil containing space of the inner cavity of the rocker arm shell is small, the lubricating requirement cannot be met, particularly, the phenomenon of insufficient lubrication during angular operation of the rocker arm shell is more prominent, and the inclination angle working state is the normal state of the rocker arm shell during operation. Disclosure of Invention The invention aims to provide a high-power rocker arm cooling system of a coal mining machine, which solves the problems of heating, poor lubrication effect and outstanding lubrication shortage phenomenon during angular work of the high-power rocker arm. The main technical scheme of the invention is as follows: The utility model provides a coal-winning machine high-power rocking arm cooling system, includes rocking arm casing and planetary mechanism, the both ends of the length direction of rocking arm casing are fuselage link and cylinder link respectively, be equipped with the high-speed section cutting drive mechanism installation cavity and the low-speed section cutting drive mechanism installation cavity of controlling intercommunication in the rocking arm casing, the high-speed section cutting drive mechanism installation cavity is close to fuselage link and coal wall side, and the below of high-speed section cutting drive mechanism installation cavity is equipped with the front lower part cavity, high-speed section cutting drive mechanism installation cavity and front lower part cavity communicate from top to bottom, install first forced cooling device group in the front lower part cavity, the planetary carrier of planetary mechanism axis front and back extension installs the coal wall side at the cylinder link of rocking arm casing, the planet carrier body is including being solid of revolution's structure, and the inside sun gear installation cavity and the installation cavity that is located the rear portion and the planet wheel installation cavity that are located the front portion, the planet wheel installation cavity is around the sun gear installation cavity and with sun gear installation cavity around the sun gear installation cavity and around the diameter of two through-hole diameter devices that do not have around the sun gear cooling device, the through-hole is installed in the center diameter around the sun gear, the through-hole is installed to the inside diameter. The first forced cooling device group comprises one or more first forced cooling devices, the first forced cooling devices comprise a cooling medium circulation pipe group, a cooling medium inlet and outlet seat and a communication seat, the cooling medium circulation pipe group comprises a plurality of inflow pipes and a plurality of outflow pipes which extend in the same direction and are arranged at intervals, two ends of the cooling medium circulation pipe group are respectively arranged on the cooling medium inlet and outlet seat and the communication seat, a plurality of inflow channels and a plurality of outflow channels are arranged in the cooling medium inlet and outlet seat, the outlets of all inflow channels and the inlets of all outflow channels are respectively gathered on the same end face of the cooling medium inlet and outlet seat and occupy half areas of the end face, the outlets of the inflow channels and the inlets of the outflow channels are respectively connected and communicated with corresponding ends of the inflow pipes and the outflow pipes in one-to-one mode, the ends of the communication seat close to the cooling medium circulation pipe group are provided with a plurality of channel interfaces which are mutually communicated in the inside, the channel interfaces are respectively connected and communicated with corresponding ends of each cooling