Cab air circulating system and land leveler

Abstract

The invention discloses a cab air circulating system and a land leveler. The cab air circulating system comprises a supercharger, a connecting pipe, an air bin assembly, an air conditioner unit and anair flue assembly. The supercharger is communicated with the connecting pipe, the connecting pipe is communicated with the air bin assembly, air outside a cab enters the cab from an air inlet of thesupercharger, and the air enters the air conditioner unit from the connecting pipe and the air bin assembly after being supercharged by the supercharger. Air in the cab enters the air conditioner unitfrom an air inlet of the air conditioner unit, and air in the air conditioner unit is released into the cab to be circulated through the air bin assembly and the air flue assembly. According to the cab air circulating system, three control modes of cab supercharging external circulating, air conditioner internal circulating and internal and external circulating synchronization can be achieved, itcan be guaranteed that the air in the cab is in a flowing circulating state in each mode, constant filtering can be achieved, and a comfortable and clean operation environment is provided for a driver; under the condition of good cab sealing, the barometric pressure in the cab is kept higher than that of the outside, and external dust is prevented from entering the cab.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an air circulation system for a cab and a motor grader using the circulation system. Background technique [0002] Motor graders are used for earth and stone leveling operations, and are often constructed in environments with high dust pollution. Harmful dust from the external environment can easily enter the cab, which will cause harm to the health of the operator. [0003] In the prior art, air is circulated into the driver's cab through high-power air-conditioning host or external air compressor. However, the air circulation routes of the air-conditioning host and the external air compressor are designed separately, and the structure is not compact. Integration, scattered and inconvenient operation, and the current domestic air-conditioning main unit and external air compressor cannot have the filtering function at the same time, causing some dust to enter the interior of ...

AI Technical Summary

Problems solved by technology

[0002] Motor graders are used for earth and stone leveling operations. They are often constructed in an environment with high dust pollution. Harmful dust from the external environment can easily enter the cab, which is harmful to the health of the operator.

[0003] In the prior art, air is circulated into the driver's cab through high-power air-conditioning host or external air compressor. However, the air circulation routes of the air-conditioning host and the external air compressor are designed separately, and the structure is not compact. Integration, scattered and inconvenient operation, and the current domestic air conditioner host and external air compressor cannot have the filtering function at the same time, causing some dust to enter the cab

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