Crane as well as startup controlling method and system thereof

Abstract

The invention discloses a crane startup controlling method. The method comprises the following steps: 11) sending a command of starting an engine by a lower cart; 12) detecting whether a gearbox connected with the engine is in a neutral position or not, performing a step 13) if the engine is in the neutral position, otherwise performing a step 14); 13) starting the engine; and 14) suspending the startup of the engine. By utilizing the controlling method, when the lower cart is started, the gear state of the gearbox is detected, the engine only can be started when the gearbox is in the neutral position, and the engine cannot be started when the gearbox is not in the neutral position. After the operation of an upper cart is completed, the engine cannot be started in an operation cab of the lower cart even an operator does not switch the gearbox to the neutral position, so that a vehicle is prevented from running out suddenly when the lower car is started, thus the startup safety of the lower cart is improved. The invention also discloses a crane and a startup controlling system thereof.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a crane and its starting control system. Background technique [0002] As a kind of engineering vehicle, the crane is required to realize the function of road driving, and at the same time must meet the needs of lifting operations. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the overall structure of a typical crane. [0004] According to the functions, the crane is mainly divided into a dismounting operation part with driving function and a boarding operation part with hoisting operation function. 20. For cranes, especially for small and medium tonnage cranes, the loading and unloading usually share a power system installed on the unloading, that is, the power required for the loading operation also comes from the engine of the unloading. After the engine power is output through the output shaft of the gearbox, it can drive the veh...

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned operation mode of starting the engine has the following technical problems: firstly, when getting out of the vehicle and starting, the gearbox is required to be in neutral, otherwise, the vehicle is prone to jump out suddenly when starting; Non-neutral, at this time, the power output by the engine is directly transmitted to the power system of the boarding car through the hydraulic oil pump to drive the boarding operation

figure 2 From the control principle shown in , it can be seen that there is no limit to the start of the crane when getting off the car, but the operator often forgets to switch the power output state of the engine (that is, whether to take power) and the gear position of the gearbox after getting off the car. The cab jumped out suddenly when starting the vehicle, causing a serious accident

[0009] Second, follow the figure 2 It can be seen from the control process of the vehicle that when the vehicle is started for boarding operations, the engine start procedure can still be carried out after getting off the vehicle. Therefore, the wrong operation of the operator in the cab after getting off the vehicle may cause the engine to start again after starting, causing the engine to start. motor damage

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