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Lifting device for lifting heavy

A technology for heavy objects and containing devices, which is applied in the direction of lifting devices, measuring devices, lifting frames, etc., to achieve the effect of continuous and smooth movement

Inactive Publication Date: 2011-04-13
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this disadvantageous way, then these compensating weights must be replaced repeatedly and adapted to each weight

Method used

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  • Lifting device for lifting heavy
  • Lifting device for lifting heavy
  • Lifting device for lifting heavy

Examples

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Effect test

Embodiment Construction

[0019] exist figure 1 The lifting device described in as an embodiment of the invention is used for lifting and lowering of heavy objects. Each weight is placed on a lifting table 10 as a weight receiving device, where two raceways 11 mounted on the lifting table 10 work. Instead of the raceway 11, other devices can also be used for the slight movement of the weight, such as air-cushion guides, sliding rails, rolling rails or transport equipment, all conceivable things in the simplest case.

[0020] On a plate-shaped base 12, two vertical linear drive devices 13, 14 are installed centrally on opposite sides of the base 12, which can also be frame-shaped or have another basic support. These are, for example, electric or hydraulic linear drives 13 , 14 . From the longitudinal slots 9 of the linear drives 13 , 14 protrude a drive element 15 , only one of which can be seen in this perspective view. The drive 15 is provided on the respective drive element of the linear drive 13,...

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Abstract

This invention provides a lifting apparatus for lifting heavy including a heavy accommodating apparatus (10) which can be lifted and lowered by a straight line driving system (13, 14). A hydraulic operating cylinder system (16, 17) applies an upward force to the heavy accommodating apparatus (10). The liquid pressure for the hydraulic operating cylinder system (16, 17) is adjustable by which part of the corresponding downward load force by heavy is compensated, wherein the liquid pressure for the hydraulic operating cylinder system (16, 17) which depends on the compensative force generated by the corresponding gravity is adjustable so that a drive force of the straight line driving system (13, 14) which is necessary for lifting the heavy is essentially the same. A device (22) is arranged for resetting and / or pre-setting the load force, and an automatic adjusting device is arranged for automatically detecting the load force and adjusting the compensative force determined by the load force. Thereby, by setting a lifting force generated from liquid pressure which is generated according to the corresponding load force for the hydraulic operating cylinder system, such as generated by the straight line driving system (13, 14), the lifting force can be promptly and easily adjusted to a constant optimum value.

Description

technical field [0001] The invention relates to a lifting device for lifting heavy objects with a weight receiving device which can be raised and lowered by means of a linear drive system. Background technique [0002] A special problem arises with such lifting devices when widely differing loads have to be lifted with the same linear transport concept. In this regard, in the simplest case, the linear transport concept must be adapted to the largest loads present with regard to its lifting force. The disadvantage is that the oversized linear drive system can no longer achieve the same smooth motion when subsequently handling very small weights. A known solution to this problem is to design the linear drive system in terms of force for relatively small weights, and to set these up-pressing compensating weights in the presence of larger weights. In this disadvantageous manner, these compensating weights must then be replaced repeatedly and adapted to each weight. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F7/00
CPCB66F7/04G01G19/00G05D16/02G11C7/00
Inventor 周洪张仁铭A·诺格鲍尔
Owner FESTO AG & CO KG
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