4results about How to "Easy to control synchronously" patented technology

This application belongs to the field of work machinery technology and provides a hydropneumatic suspension hydraulic control valve, a hydropneumatic suspension hydraulic system, and work machinery. The hydropneumatic suspension hydraulic control valve has a first oil port, a second oil port, a third oil port, and a fourth oil port. The valve also includes a first oil passage and a second oil passage. The first oil passage connects the first oil port and the fourth oil port, and the second oil passage connects the second oil port and the third oil port. A first shut-off valve for controlling on / off is installed on the first oil passage, and a second shut-off valve for controlling on / off is installed on the second oil passage. The first and second shut-off valves are hydraulically controlled directional valves, and a connecting channel is provided between their hydraulically controlled directional ports. A pilot control valve for controlling on / off is installed between the connecting channel and the pilot oil source inlet. This valve has a simple control logic and produces minimal vehicle body posture oscillation when performing rigid-flexible support switching control.

The utility model relates to the technical field of stirrer, concretely to a stirring head quick replacement structure, including electric mixer body, electric mixer body left end is connected with the stirring head, the electric mixer body outer surface left end is installed with auxiliary mechanism, the auxiliary mechanism includes auxiliary cover, the auxiliary ring of welding in auxiliary cover left end and the limiting frame of welding in auxiliary ring right side surface, the limiting frame inside is provided with the limiting block, when needing to replace the stirring head, through the right movement of the auxiliary cover of pushing, make the auxiliary ring drive the right movement of sliding connecting block, make the limiting insertion rod can leave the limiting mechanism, then through the limiting groove cooperation limiting block will fix the position of auxiliary cover, can fix the position of sliding connecting block, can conveniently control limiting mechanism to replace the stirring head subsequently, through auxiliary mechanism makes the user can conveniently synchronous control both sides' locking mechanism, can more quickly replace the stirring head.

The application relates to the field of mine equipment, and discloses a mine underground temperature reduction and waste heat recycling device and a method thereof, which effectively solve the problem that when the temperature of a waste heat boiler rises to a certain value, the heat transfer effect becomes poor, and the device comprises a mine frame, a mounting plate is arranged in the mine frame, a waste heat recycling assembly is arranged at the top of the mounting plate, the waste heat recycling assembly comprises two bases which are symmetrically arranged at the top of the mounting plate, a waste heat boiler is arranged at the top of the base, a furnace cavity is arranged in the waste heat boiler, a heat exchange spiral groove is arranged in the waste heat boiler, and the heat exchange spiral groove is arranged at the outside of the furnace cavity. The application is provided with two waste heat boilers for air heat absorption work, when the heat absorption medium in the furnace cavity of one waste heat boiler reaches a high temperature, the other waste heat boiler can be started to work, the two waste heat boilers can alternately transfer heat, and the underground temperature reduction effect and the waste heat recycling efficiency are ensured.