Fuel oil and electric dual-purpose bulldozer

Abstract

The invention provides a fuel-electricity dual-purpose bulldozer, which comprises a chassis, a power system, a transmission case, a running system, a hydraulic power station, a hydraulic system, an operating system, a control circuit, a cable drum, an oil motor for a drum, a driving oil motor, a driving transmission case of the power system and a hydraulic pump station. The output shaft of the transmission case drives the running system, the hydraulic pump station provides pressure oil for the hydraulic system which drives the operating system; the power system comprises a fuel engine and an AC motor; the hydraulic pump station comprises a hydraulic pump station driven by the fuel engine and an electric hydraulic pump station driven by the AC motor, the two hydraulic pump stations are connected with the hydraulic system through a two-position three-way valve; the electric and hydraulic pump station provides pressure oil for the drum oil motor and the driving oil motor; the fuel enginedrives the input shaft of the transmission case; the driving oil motor drives the intermediate shaft of the transmission case through an engaging and disengaging device; a cable drum is used for drawing or releasing the cable and the drum oil motor drives the cable drum to draw or release the cable; a control circuit controls the bulldozer when the bulldozer is driven by the AC motor. The invention can effectively save fuel, reduce the pollution to the environment by the exhaust gas of the fuel and can considerably reduce the operation cost.

Description

technical field [0001] The invention relates to a bulldozer, in particular to a dual-purpose fuel and electric bulldozer which can be alternately used in fuel and electric drive modes. Background technique [0002] A bulldozer is a kind of engineering operation vehicle, which can travel long distances on the road like ordinary vehicles. Leveling, slope cutting and bulldozing operations. The bulldozers in the prior art are driven by fuel, that is, the fuel engine drives the bulldozer to walk and drives the hydraulic system on the vehicle to move the working parts such as the bucket. Fuel-fuel drive has the advantages of high power and long driving distance, but during the operation of the bulldozer, the bulldozer moves back and forth on a small site, and the exhaust gas and noise pollution of the fuel engine have a great impact on the staff on site. [0003] How to make the bulldozer not only be driven by fuel oil during long-distance travel, but also be driven by electrici...

AI Technical Summary

Problems solved by technology

Fuel drive has the advantages of large power and long driving distance, but during the operation of the bulldozer, the bulldozer moves back and forth on a small site, and the exhaust gas and noise pollution of the fuel engine have a great impact on the staff on site

[0003] How to make the bulldozer not only be driven by fuel oil during long-distance travel, but also be driven by electricity during operation, directly use AC power supply, and avoid environmental pollution from waste batteries. There is no technology that meets the above-mentioned requirements in the prior art. Program

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