Driving device for double-wheel slot milling machine slush pump

Abstract

The invention discloses a driving device for a double-wheel slot milling machine slush pump. The driving device comprises a motor, a motor mounting seat, a transmission shaft and a transmission box. Acoupling is arranged in an inner cavity of the transmission box, and the transmission shaft is connected with a pump shaft in a driving mode through the coupling; the motor is mounted on the upper portion of the motor mounting seat, the upper end of the transmission shaft is located in an inner cavity of the motor mounting seat and connected with a motor output shaft in a diving mode, and the lower end of the transmission shaft penetrates through a base to be connected with the coupling; a first sealing assembly is arranged between the transmission shaft and the base, and an oil drainage portis formed in the base; the cavity located above the first sealing assembly and between the transmission shaft and the motor mounting seat is defined as a first closed cavity, and the oil drainage port communicates with the first closed cavity; the transmission box is mounted above the pump shaft through a connecting seat, and a second sealing assembly is arranged between the circumferential portion of the pump shaft and the connecting seat; and a second closed cavity is formed between the first sealing assembly and the second sealing assembly, and a hydraulic detecting mechanism is arranged at the bottom of the second closed cavity. According to the driving device for the double-wheel slot milling machine slush pump, a common hydraulic motor is adopted, and then a diving pump can be driven; and the structure is simple, the working reliability is high, maintenance is convenient, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of underground construction machinery and equipment, in particular to a driving device for a mud pump of a double-wheel slot milling machine. Background technique [0002] The double-wheel milling machine is a basic engineering construction machine with high construction efficiency; it mills rocks to form grooves through the milling wheels, and the maximum milling depth can reach 150m. When it is working, the hydraulic oil pipe supplies oil to the mud pump motor to drive the mud pump to rotate, and the slurry mixture such as crushed stone and dregs milled by the milling wheel is discharged to the desander on the ground through the mud hose. Due to the large milling depth, the pressure of the motor oil drain chamber will increase in the deep water continuous wall groove, and the ordinary motor lip seal can only withstand the pressure of 0.3MPa (about 30m water depth), so the ordinary motor cannot meet the cur...

AI Technical Summary

Problems solved by technology

However, since the two mechanical seals are fixed on the same transmission shaft, the machining accuracy requirements for the upper and lower parts of the motor mounting base are very high (especially the requirements for coaxiality), and the installation and debugging are inconvenient, and the reliability is poor. Too compact and complex, not convenient for later maintenance

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