Fully-hydraulic electric fork truck

An electric forklift, full hydraulic technology, applied in the direction of hoisting devices, can solve the problems of electric switches, many relays, limited fuel tank volume, difficult maintenance, etc., to improve reliability and service life, improve safety performance, and reduce labor intensity. Effect

Inactive Publication Date: 2003-03-26
ZHEJIANG JIALI TECH +1
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing counterbalanced electric forklifts adopt a three-motor configuration scheme, that is, the traveling drive device, the lifting device and the steering device are driven by one motor respectively. The arrangement of the three motors and their relatively complicated transmission mechanisms make the internal structure of the forklift crowded. , Difficult to assemble, difficult to maintain, and a large number of electric switches and relays required to operate the three motors
During operation, the three motors start and brake frequently, which not only affects the life of the motor transmission mechanism, but also has a large starting current, over-discharge of the power supply, hi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fully-hydraulic electric fork truck
  • Fully-hydraulic electric fork truck
  • Fully-hydraulic electric fork truck

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] As shown in Figures 1, 2, and 3, the fully hydraulic electric forklift includes a power supply, a body 1, a double fuel tank 6, a single motor 4, a variable pump 5 connected to the single motor 4 through a coupling, a multi-way valve 7 and a fork The gantry 13, the steering device 3 composed of the hydraulic steering gear 31, the steering cylinder 32, the safety valve 33 and the one-way valve 34, the tilting and lifting device 2 composed of the tilting cylinder 11 and the lifting cylinder 12, and the two-speed hydraulic motor 91 . The hydraulic brake 92 and the hydraulic speed regulating valve 93 arranged on the motor constitute the walking drive device 9 , and the hydraulic brake 92 is controlled by a hydraulic brake valve 14 . The multi-way valve 7 is composed of a tilt control valve 71, a lift control valve 72, a walking reversing valve 73, a control valve 74, etc. The four valves are connected by a connecting piece 75 as a whole, and the four valves are all three-pos...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a full-hydraulic electric fork lifter, which comprises lifter body, double oil tank, motor variable displacement pump connected with motor, multiway valve, steering device, inclined lifting device and walking-driving device. It is characterized by that the said motor is single one, and said multiway valve comprise incline valve, lifting valve, walking valve and control valve, said four valves are connected into one body by a connecting component, said multiway valve is equipped with a main oil hole communicated with the said four valves and two brach oil holes, and between said two branch oil holes and variable displacement pump a precedence valve is set to implement single motor driving, hydraulic speed regulation.

Description

【Technical field】 [0001] The invention relates to a counterweight electric forklift, in particular to a full hydraulic electric forklift. 【Background technique】 [0002] Most of the existing counterbalanced electric forklifts adopt a three-motor configuration scheme, that is, the traveling drive device, the lifting device and the steering device are driven by one motor respectively. The arrangement of the three motors and their relatively complicated transmission mechanisms make the internal structure of the forklift crowded. , Difficult to assemble, difficult to maintain, and a large number of electric switches and relays required to operate the three motors. During operation, the three motors start and brake frequently, which not only affects the life of the motor transmission mechanism, but also has a large starting current, over-discharge of the power supply, high energy consumption, and low efficiency, which affect the production efficiency of the operation. The chassi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B66F9/06B66F9/20
Inventor 关景泰刘钊
Owner ZHEJIANG JIALI TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products