Sealing device for working machine and pressurized driving cap

Abstract

The sealed and pressurized operator's cabin for engineering machinery includes one sealed box comprising one first part with at least one first opening and one second part with at least one second opening; at least one control rod connected to the sealed box and penetrating through the first opening; at least one linkage unit connected to the control rod and penetrating through the second opening; and one sealing member to seal the sealed box through fitting with the linkage unit. The sealed and pressurized operator's cabin can avoid contamination to the inside of the cabin and maintain its air pressure.

Description

technical field [0001] The invention relates to a sealing device of a working machine, and further relates to a pressurized cab of a working machine provided with the sealing device. Background technique [0002] Work machines such as bulldozers, excavators, agricultural tractors, and other types of heavy work machines can often be provided with controls, such as gear controls, steering controls, and / or handbrake controls. The upper part of the control rod of the above-mentioned control device can usually pass through the opening on the console or the cab cover from the lower part of the console or the cab to enter the console or the cab, and is further connected with the control handle. The lower part of the control rod Usually the lower part of the console or the cab cover is connected with the linkage device. Since the lower part of the control device is exposed to the lower part of the cover without protection, the control device may be contaminated or damaged; when the ...

AI Technical Summary

Problems solved by technology

The upper part of the control rod of the above-mentioned control device can usually pass through the opening on the console or the cab cover from the lower part of the console or the cab to enter the console or the cab, and is further connected with the control handle. The lower part of the control rod Usually the lower part of the console or the cab cover is connected with the linkage device. Since the lower part of the control device is exposed to the lower part of the cover without protection, the control device may be contaminated or damaged; when the working machine is set up in the cab, the driving Outdoor dust may enter the cab from the opening on the cover plate and pollute the cab; especially when the working machine adopts a pressurized cab, the air is sent into the cab through the air supply device to make the pressure in the cab Greater than the external pressure to keep the cab clean, in this case, the air sent into the cab can escape the cab from the opening on the cover plate, resulting in a decrease in the pressure of the cab, which is not conducive to the formation of pressure difference between the inside and outside of the cab

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