Electrical control system for large-tonnage electric forklift lifting and steering action
An electric control system and electric forklift technology, applied in the direction of lifting devices, etc., can solve the problems of difficult layout, low efficiency, high energy consumption, etc., and achieve the effect of easy layout, accurate positioning and small volume of the whole vehicle
Active Publication Date: 2014-11-19
ANHUI HELI CO LTD
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Problems solved by technology
[0006] In order to overcome the problems of low efficiency, high energy consumption, high cost and difficult layout existing in the electrical control system of the prior art, the present invention provides an electrical control system for the lifting and steering actions of a large-tonnage electric forklift, and realizes the joint driving of the forklift. Lifting (mast lifting, tilting, attachments) and steering actions
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[0028] Such as figure 1 As shown, an electric control system for lifting and steering actions of a large-tonnage electric forklift includes an 80-volt battery 1 for powering the system, a multi-way valve 11 and a first switch connected in parallel between the output terminal of the key switch and the negative pole of the battery 1. The pump motor controller 2-1, the second pump motor controller 2-2 and the steering signal processor 8; the inclined valve stem of the multi-way valve 11 is connected with the attachment of the inclined micro switch 6 and the multi-way valve 11 The valve stem is connected with the attachment micro switch 5, and the lifting speed sensor 7 is connected with the lifting valve stem of the multi-way valve 11; the tilt micro switch 6, the attachment micro switch 5 and the first pump electrical controller 2-1 connection, the speed regulating end of the lifting speed regulating sensor 7 is connected with the first pump motor controller 2-1 and the second p...
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The invention provides an electrical control system for large-tonnage electric forklift lifting and steering action. The electrical control system comprises a storage battery, a multiway valve, pump motor controllers and a steering signal processor, the pump motor controllers and the steering signal processor are parallelly connected between a key switch output end and a storage battery negative electrode, and a tilt microswitch, an accessory microswitch and a hoisting and speed controlling sensor are connected on the multiway valve; two ends of each of the tilt microswitch and the accessory microswitch are connected with the first pump electrical controller, and the speed controlling end of the hoisting and speed controlling sensor is connected with the first pump motor controller and the second pump motor controller respectively; the signal output end of the steering signal processor is connected with the second pump motor controller; hoisting action of a forklift portal is joint operated by two pump motors, and system output power is the sum of operation power of two motors; tilting of the portal, steering of a vehicle and acting of accessories are driven by the individual pump motor, so that the two pump motors can operate at the working point of higher efficiency under different stations, operation efficiency of the whole vehicle is improved, and energy sources are saved.
Description
technical field [0001] The invention relates to the technical field of forklifts, in particular to an electrical control system for lifting and steering actions of a large-tonnage electric forklift. [0002] Background technique [0003] In general, there are two design principles for the electrical control system of the lifting and steering functions of the counterbalanced electric forklift: the first is to control a pump motor through a controller to realize the lifting, tilting and attachment of the mast, etc. The lifting action, the signal of each lifting action is triggered by the controller after receiving the operation request command, and the steering action of the vehicle is performed by a separate motor, and the power supply of the steering motor is controlled by the contactor. The steering signal is triggered by the key switch. After the key switch is energized, the wire pack of the contactor generates a pressure difference, and then the contacts of the contactor...
Claims
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IPC IPC(8): B66F9/20
Inventor 栾英马庆丰吴信丽吴天福刘晓东姚钢邵凌凌
Owner ANHUI HELI CO LTD