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Lifting system with double front cylinders for electric forklift

An electric forklift, front cylinder technology, applied in the direction of the lifting device, can solve the problems of small residual load and obstructed vision, and achieve the effect of reducing the number, improving the work stability, and increasing the space in the middle

Active Publication Date: 2017-01-04
ANHUI HELI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of visual obstruction and small residual load existing in the electric forklift with three-stage full-free gantry, the present invention provides an electric forklift suitable for three-stage full-free gantry below 2 tons through structural improvement The lifting system with double front cylinder

Method used

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  • Lifting system with double front cylinders for electric forklift
  • Lifting system with double front cylinders for electric forklift
  • Lifting system with double front cylinders for electric forklift

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see figure 1 , the lifting system with double front cylinders of the electric forklift cooperates with the side shifter 8 installed. The lifting system of the electric forklift with double front cylinders includes a three-stage full-free mast, two rear lifting cylinders, a front lifting cylinder, a lifting pipeline mechanism and an attachment lateral movement pipeline mechanism. The three-stage full-free mast includes an outer mast 1, a middle mast 2 and an inner mast 3, and the side shifter is installed at the front of the outer mast. The rear lifting oil cylinder is composed of the left rear lifting oil cylinder 4 and the right rear lifting oil cylinder 13, and the left rear lifting oil cylinder 4 and the right rear lifting oil cylinder 13 are all plunger oil cylinders, and the rod diameters of the two plunger rods are 40mm, cylinder diameter is 50mm. The left rear lifting oil cylinder 4 and the right rear lifting oil cylinder 13 are respectively installed on both s...

Embodiment 2

[0031] see Figure 6, the lifting system with double front cylinders of the electric forklift cooperates with the installation of the pitch-adjusting fork attachment (four-piece valve attachment), and the attachment pipeline mechanism includes the first attachment high-pressure oil inlet pipe 65 and the first attachment high-pressure oil return pipe 66 , the first attachment high-pressure oil inlet pipe 65 and the first attachment high-pressure oil return pipe 66 straddle the right small pulley bracket 71 at the same time, and then straddle the right front cylinder chain 11, the right small pulley bracket 71 is fixedly installed on the right large Above the pulley 70; it also includes the second attachment high-pressure oil inlet pipe 57 and the second attachment high-pressure oil return pipe 58, straddling the left small pulley bracket 50 at the same time, and then straddling the left front cylinder chain 6, the left small pulley bracket 50 Fixedly installed above the left la...

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Abstract

The invention relates to a hoisting system with double front cylinders for an electric fork-lift truck. The system comprises a three-stage full free portal, two back lifting cylinders, front lifting cylinders, a lifting pipeline mechanism and an accessory pipeline mechanism, wherein the three-stage full free portal comprises an outer portal, a middle portal and an inner portal; the two back lifting cylinders are respectively arranged on two sides of the outer portal, and are positioned on the back part of the outer portal; the two back lifting cylinders are plunger cylinders; the front lifting cylinders are two plunger cylinders with the same structure; during work, the two front lifting cylinders are lifted or descended simultaneously; the two front lifting cylinders are respectively fixed on the left side and the right side of a lower crossbeam arranged in the inner portal, and are all positioned on the back part of the inner portal, so that the middle upper part of the three-stage full free portal forms a wide-vision space. The two front lifting cylinders and the two back lifting cylinders adopt the plunger cylinders, and the number of hydraulic pipelines is reduced; by optimizing the arrangement of the hydraulic pipelines and lifting chains, and the pipelines are concealed behind structural members to the greatest extent, so that a driver has good operating vision.

Description

technical field [0001] The invention belongs to the technical field of electric forklifts, and in particular relates to a hoisting system of an electric forklift with a three-stage full-free mast below 2 tons. Background technique [0002] At present, the field of vision and low residual load problems of electric forklifts with three-stage full-free masts are more prominent. The main factors that affect the field of view are: 1. The lifting chain that acts on the front and rear cylinders; 2. The hydraulic pipeline system, including the hydraulic pipeline that supplies oil to the cylinder, the hydraulic pipeline that supplies oil to the attachment, and the oil return pipe of the lifting cylinder; 3. Front lifting cylinder. The main factors affecting the residual load are: 1. The load distance of the hoisting system; 2. The roller distance when lifting to the top; 3. The stability of the pressure rod of the lifting cylinder. [0003] The lifting system often works together w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F9/06
CPCB66F9/08B66F9/22
Inventor 白迎春钟继萍张丽吴信丽袁正章文誉王茂兵张征
Owner ANHUI HELI CO LTD