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Heavy-load ultra-low limit shear-fork-type hydraulic lift and working method thereof

An ultra-low limit, lift technology, applied in the direction of lifting frame, lifting device, etc., can solve the problem of insufficient lifting force in the compression stage, and achieve the requirements of improving system stability and carrying capacity, reducing mechanical stiffness, and strong system stability Effect

Pending Publication Date: 2018-01-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a simple structure, stable and reliable heavy-duty ultra-low limit scissor hydraulic lift and its working method, which solves the problem of insufficient lifting force in the compression stage

Method used

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  • Heavy-load ultra-low limit shear-fork-type hydraulic lift and working method thereof
  • Heavy-load ultra-low limit shear-fork-type hydraulic lift and working method thereof
  • Heavy-load ultra-low limit shear-fork-type hydraulic lift and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: as Figure 2~3 As shown, a heavy-duty ultra-low limit scissor hydraulic lift includes a stage 100 and a base 200 located below the stage 100, and a pair of scissor arms 300 is arranged between the stage 100 and the base 200. The center of the scissor arm 300 is hingedly connected. The upper and lower ends on the left side of the scissor arm 300 are respectively hinged on the stage 100 and the base 200 , and the upper and lower ends on the right side slide up with the stage 100 and the base 200 respectively through rollers 600 The two arms of the scissor arm 300 are provided with a main propulsion hydraulic cylinder 400 that drives the scissor arm 300 to open and close. The cylinder body of the cylinder 400 is provided with an inclinometer 410 for sensing the angle between the main propulsion hydraulic cylinder and the horizontal direction. The auxiliary lifting system 500 of the object table 100; the angle α between the main propulsion hydraulic cylinder ...

Embodiment 2

[0025] Embodiment 2: as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the driving mechanism is different. In this embodiment, the driving mechanism includes a screw rod 5002 whose upper end supports the auxiliary platform. The driven bevel gear 5003 has a driving bevel gear 5004 meshing with it beside the driven bevel gear, and the driving bevel gear 5004 is driven by an electric motor or a hydraulic motor.

Embodiment 3

[0026] Embodiment 3: as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the driving mechanism is different. In this embodiment, the driving mechanism includes a screw rod 5002 whose upper end supports the auxiliary platform. The worm wheel 5005 has a worm 5006 engaged with it beside the worm wheel, and the worm 5006 is driven by an electric motor or a hydraulic motor.

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Abstract

The invention relates to a heavy-load ultra-low limit shear-fork-type hydraulic lift and a working method thereof. The heavy-load ultra-low limit shear-fork-type hydraulic lift comprises a loading table and a base located below the loading table; a pair of shear fork arms is arranged between the loading table and the base; a main propulsion hydraulic cylinder for driving the shear fork arms to open and close is arranged between the two shear fork arms; a pressure sensor for sensing the weight of cargoes is arranged on the loading table; a grading instrument for sensing the angle between the main propulsion hydraulic cylinder and the horizontal direction is arranged on a cylinder body of the main propulsion hydraulic cylinder, and the grading instrument is connected with a controller; and an auxiliary lifting system which is controlled by the controller to support the loading table is arranged on the base. According to the heavy-load ultra-low limit shear-fork-type hydraulic lift, the problem of insufficient lifting force in the compression stage of the main propulsion hydraulic cylinder is effectively solved, the requirement for the mechanical rigidity of the system is reduced, theheavy-load ultra-low limit shear-fork-type hydraulic lift has the advantages of simple and compact structure, safety, reliability, high system stability and the like, and the system stability and carrying capacity of the whole machine are improved.

Description

technical field [0001] The invention relates to a heavy-duty ultra-low limit scissor hydraulic lift and a working method thereof. Background technique [0002] The scissor hydraulic lift has the advantages of long lifting stroke, large space expansion, and convenient contraction. However, in some extreme engineering applications, when the compressed height is required for heavy-duty applications, the compressed scissor Small, so that the vertical lifting force of the hydraulic cylinder is much smaller than the horizontal force. In order to meet the use requirements, the bearing capacity of the hydraulic cylinder is required to be large. Force F=sinαT, T is the bearing capacity of the hydraulic cylinder. When α is too small, the lifting force F will be insufficient due to constant T. In order to meet the requirements of use, only hydraulic cylinders of various specifications can be used, and the hydraulic pressure should be increased. At the same time, the requirements for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F7/06B66F7/08B66F7/12B66F7/14B66F7/18B66F7/28
Inventor 雷瑶汪长炜纪玉霞吴智泉
Owner FUZHOU UNIV
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