An inner circulating cooling and cutting reducer of a horizontal axis roadheader

Abstract

The invention belongs to the technical field of parts and components of underground mining equipment in coal mines, in particular to an internal circulating cooling and cutting reducer of a horizontal axis roadheader. It includes a reducer, a pump in the casing of the reducer, the pump is connected with the pump driven wheel, the pump driven wheel is meshed with the pump power wheel, the pump power wheel and the horizontal axis of the reducer are fixed, and the casing is provided with a lubricating oil channel and The oil pool, the inlet of the lubricating oil channel is provided with a joint I, the outlet of the lubricating oil channel is connected to the high-speed stage of the reducer, the high-speed stage is connected to the oil pool through the gap, the inlet of the lubricating oil channel is connected with the pump through the hose I, and the pump is connected through the soft Pipe II is connected to the oil pool, the outlet of the hose II is provided with a joint II, the lubricating oil is directly connected to the joint I on the casing through the hose I, the pump rotates, and the lubricating oil in the oil pool is sucked into the pump through the hose II and the joint II , flows through hose I, reaches the high-speed lubrication channel, and finally reaches the high-speed bearings and seals.

Description

technical field [0001] The invention belongs to the technical field of parts and components of underground mining equipment in coal mines, in particular to an internal circulating cooling and cutting reducer of a horizontal axis roadheader. Background technique [0002] At present, there are dozens of models of roadheaders in my country, which are mainly used to open up roadways in coal mines, and can be used to drive roadways with various cross-sections with coal rock hardness f ≤ 10. The cutting part is the working mechanism of the roadheader and the direct part of the roadheader to break coal and rock. The horizontal axis roadheader is mainly composed of a cutting motor that provides a power source, a reducer that realizes transmission and deceleration and transmits large torque, and crushes coal and rock. composition of cutting head. The reducer is a key link in the intermediate transmission. Once a fault occurs in the underground, the whole machine will not be able to ...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: 1. When the reducer stops working, the oil inside the pipeline will flow back to the reducer under the action of gravity. When the reducer is frequently started and stopped at the lowest working position, due to the long external circulation pipeline (nearly 10 meters ), which will cause the lubricating oil to fail to reach the lubrication point in time, causing the temperature of the high-speed stage to rise rapidly; 2. The external pipeline is above the cutting reducer, and the top is an unanchored empty roof, and broken coal rocks may fall at any time , damage the pipeline, even if there is protection, this kind of failure also occurs underground; 3. The external circulation cooling is through cooling lubricating oil, and then through lubricating oil to cool gears and bearings, because lubricating oil passes through pipelines and twists and turns After the pore system, the pressure and flow will decrease, the temperature will rise, the effect is not ideal

4. For the design of the ring gear output, because the planetary frame at the output end is fixed, it is necessary to perform forced lubrication on the uppermost planetary gear, and the lubrication points are increased. In order to satisfy all the lubrication points, the diameter of the oil passage hole is different, and the oil quality is deteriorated. In some cases, there may be a risk of the small diameter lubricating oil passage being blocked

5. When workers check the oil level, they need to remove the screw plug, which is easy to cause lubricating oil pollution

6. Due to the use of ring gear output, the pipeline of the internal spray system must flow through multiple parts inside the reducer. In a strong vibration working environment, there are certain hidden dangers. Once leakage occurs, it will affect the normal operation of the entire reducer

7. Due to the use of ring gear output, splines are used for the connection with the cutting head, the gap is large, easy to wear, irreparable, and high cost

Images