Power take-off control system and method for boarding vehicle and construction machinery

Abstract

The invention relates to the field of engineering machinery, and discloses a boarding power take-off control system, a method and engineering machinery. The boarding power take-off control system comprises a boarding power take-off device, a transfer case gear shifting air cylinder and an electromagnetic valve set. The boarding power takeoff and the transfer case gear shifting air cylinder each comprise a neutral gear and a power take-off gear, and the electromagnetic valve set controls the ventilation state of the boarding power takeoff and the transfer case gear shifting air cylinder so thatthe neutral gear of one of the boarding power takeoff and the transfer case gear shifting air cylinder can be locked with the power take-off gear of the other of the boarding power takeoff and the transfer case gear shifting air cylinder. When one of the transfer case gear shifting air cylinder and the boarding power takeoff is in a neutral position state, the other one can enter a non-neutral-position working state. When the power take-off operation is carried out, the chassis transmission system cannot output power; when the chassis transmission system outputs driving power, the boarding cannot take off the power; and the problem of insufficient power caused by extra power consumption is solved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control system for taking power from a boarding vehicle, a method for controlling power taking from a boarding vehicle, and a construction machine. Background technique [0002] Existing engineering machinery, such as truck cranes, are a kind of crane mounted on an ordinary car chassis or a special car chassis. The driving cab is set separately from the lifting control room. Keep your legs steady. The chassis performance of the truck crane is equivalent to that of a truck with the same total weight, which meets the technical requirements of road vehicles, so it can pass on various roads. Large-tonnage truck cranes with a lifting capacity of more than 90 tons often have two engines, one under the chassis engine, used to drive, and its emissions meet the relevant regulations on road emissions; one on-board engine, used to drive the operating mechanism, its emissions Complie...

AI Technical Summary

Problems solved by technology

Since the power take-off of the chassis transfer case does not have a clutch, during the above power take-off process, the gearbox may lock the forward gear or close the clutch when the reverse gear is closed, and then close the control valve of the power take-off device of the chassis transfer case, resulting in Power take-off gear broken

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