Vertical lifting type comprehensive drum coal-mining machine without rocker arm

A vertical lifting type comprehensive drum coal-mining machine without a rocker arm, comprising:

• a central control box, a left supporting box body, a right supporting box body, a left guide rail fixing box body, a right guide rail fixing box body, a left traveling gear box, and a right traveling gear box;
• wherein the left supporting box body and the right supporting box body are symmetrically arranged below the central control box, the left guide rail fixing box body and the right guide rail fixing box body are symmetrically arranged on two sides of the central control box, the left supporting box body, the right supporting box body and the central control box are mutually and fixedly connected, the left guide rail fixing box body, the right guide rail fixing box body and the central control box are mutually and fixedly connected, one end of the left traveling gear box is fixed in the left supporting box body, the other end of the left traveling gear box is fixed in the left guide rail fixing box body, one end of the right traveling gear box is fixed in the right supporting box body, and the other end of the right traveling gear box is fixed in the right guide rail fixing box body;
• a left cutting and lifting reduction gear box is disposed in the left guide rail fixing box body, a right cutting and lifting reduction gear box is disposed in the right guide rail fixing box body, a left traction reduction gear box is disposed in the left supporting box body, a right traction reduction gear box is disposed in the right supporting box body, an output shaft of the left traction reduction gear box is connected with an input shaft of the left traveling gear box, an output shaft of the right traction reduction gear box is connected with an input shaft of the right traveling gear box, and a traveling output gear of the left traveling gear box and a traveling output gear of the right traveling gear box are both engaged with a pin rail of a scraper conveyor, so that the coal-mining machine makes left-to-right traction motion on the pin rail;
• the left guide rail fixing box body and the right guide rail fixing box body have the same structure;
• lifting guide rails are symmetrically arranged on a left inner wall and a right inner wall of the left guide rail fixing box body, and lifting guide rails are symmetrically arranged on a left inner wall and a right inner wall of the right guide rail fixing box body;
• slideways in fit with the lifting guide rails on the left inner wall and the right inner wall of the left guide rail fixing box body and lifting cylinders symmetrical-arranged are disposed on a left outer wall and a right outer wall of the left cutting and lifting reduction gear box;
• the lifting cylinders drive the left cutting and lifting reduction gear box to make lifting motion along the lifting guide rails on the left inner wall and the right inner wall of the left guide rail fixing box body;
• slideways in fit with the lifting guide rails on the left inner wall and the right inner wall of the right guide rail fixing box body and lifting cylinders symmetrical-arranged are disposed on a left outer wall and a right outer wall of the right cutting and lifting reduction gear box;
• the lifting cylinders drive the right cutting and lifting reduction gear box to make lifting motion along the lifting guide rails on the left inner wall and the right inner wall of the right guide rail fixing box body;
• the left cutting and lifting reduction gear box and the right cutting and lifting reduction gear box have the same structure, and each of which is provided with a cutting motor, a cutting gear reduction mechanism, and a spiral drum, wherein the spiral drum of the left cutting and lifting reduction gear box is located on an outer side of the left guide rail fixing box body;
• the spiral drum of the right cutting and lifting reduction gear box is located on an outer side of the right guide rail fixing box body;
• and the cutting motor drives the spiral drum to rotate through the cutting gear reduction mechanism;
• and
• the central control box is used for controlling the start, the stop and the left-to-right traction motion of the coal-mining machine as well as the lifting motion of the spiral drums.