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Reach forklift hydraulic system and control method

A hydraulic system and forklift technology, which is applied in the hydraulic system and control field of reach-type forklifts, can solve problems such as low work efficiency and poor lifting micro-motion performance, and achieve good micro-motion performance

Active Publication Date: 2019-06-21
ANHUI HELI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The hydraulic system and control method of a forward-moving forklift proposed by the present invention can solve the problem that when the forward-moving forklift supplies oil to the forward and backward moving oil cylinders and tilting oil cylinders, the motor and the oil pump work in the low speed area, the working efficiency is low, and the lifting is slightly moved. Technical issues with poor performance

Method used

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  • Reach forklift hydraulic system and control method
  • Reach forklift hydraulic system and control method
  • Reach forklift hydraulic system and control method

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0031] Such as figure 1 As shown, the reach-type forklift hydraulic system described in this embodiment is based on the hydraulic oil tank 1 of the reach-type forklift. An oil pump is arranged in the hydraulic oil tank 1. The oil pump communicates with the oil cylinder through a pipeline. The oil cylinder includes a tilting oil cylinder 11 and a forward and backward moving oil cylinder 13 , left lifting oil cylinder 15, right lifting oil cylinder 16, wherein, the oil pump comprises large displacement oil pump 3 and small displacement oil pump 6, and...

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Abstract

The invention relates to a reach forklift hydraulic system and a control method. The technical problems that when a reach forklift supplies oil to a forward and backward oil cylinder and a tilting oilcylinder, a motor and an oil pump work at a low-rotating-speed area, working efficiency is low and lifting micromotion performance is poor can be solved. The reach forklift hydraulic system comprisesa large-displacement oil pump motor controller and a small-displacement oil pump motor controller. The large-displacement oil pump motor controller controls a large-displacement oil pump motor to operate. The small-displacement oil pump motor controller controls a small-displacement oil pump motor to operate. The reach forklift hydraulic system further comprises a valve controller. The large-displacement oil pump motor controller and the small-displacement oil pump motor controller are in communication connection with the valve controller through a CAN bus. The valve controller is in communication connection with a lifting thumb switch, a forward and backward thumb switch and a tilting thumb switch of the reach forklift. According to the reach forklift hydraulic system provided by the invention, a small-displacement oil pump is adopted to supply oil to the forward and backward oil cylinder and the tilting oil cylinder independently, working efficiency is high and energy can be saved;and meanwhile the small-displacement oil pump is used for oil supplying during lifting micromotion operation, and the micromotion performance is good.

Description

technical field [0001] The invention relates to the technical field of forklift hydraulic systems, in particular to a forward-moving forklift hydraulic system and a control method. Background technique [0002] The forward-moving forklift uses a single pump to supply oil to the lifting cylinder, the forward-and-forward moving cylinder, and the tilting cylinder. When the motor and oil pump work in the low speed range, the work efficiency is low, the heat generated by the system is large, and energy is wasted. Extremely low, the motor and oil pump work unstable, and the fretting performance is poor. Contents of the invention [0003] The hydraulic system and control method of a forward-moving forklift proposed by the present invention can solve the problem that when the forward-moving forklift supplies oil to the forward and backward moving oil cylinders and tilting oil cylinders, the motor and the oil pump work in the low speed area, the working efficiency is low, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F9/22F15B11/17F15B21/08
Inventor 张克军白迎春盛华健
Owner ANHUI HELI CO LTD
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