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A lifting device and fixing device technology, applied in the direction of lifting device, etc., can solve the problems of small structure height, large working stroke, difficult to provide, etc., and achieve the effect of large working stroke, small self-weight, and simple manual operation.

Inactive Publication Date: 2008-01-30
MAN B & W DIESEL AS
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  • Abstract
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Problems solved by technology

In addition, if such a lever crane is to have a low construction height in the extended position, it is difficult to provide a large working distance

Method used

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Embodiment Construction

[0024] Figures 1 to 3 each show a cross-section of a lifting device 10 according to the invention in different positions, wherein in Figure 1 the lifting device 10 according to the invention has been completely moved together, and in Figure 3 it has been completely moved together. move away. FIG. 2 shows a position of the lifting device 10 according to the invention, namely a position between the fully moved-in position in FIG. 1 and the fully extended position in FIG. 3 .

[0025] According to FIGS. 1 to 3, the lifting device 10 according to the present invention has two base bodies, namely a first base body 11 and a second base body 14, wherein the first base body 11 has a first platform 12 and a Projecting section 13 , second base body 14 has a second platform 15 and a section 16 projecting relative to second platform 15 .

[0026] The segments 13 and 16 of the two base bodies 11 and 14 are respectively screwed and welded at the first ends to the corresponding platforms 12...

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Abstract

The present invention relates to a lifting device, especially a crankshaft bearing lifting device for installing the crankshaft bearing in a internal-combustion engine or disassembling the crankshaft bearing from the internal-combustion engine. The lifting device comprises a first basal body (11) with a first platform (12), a second basal body (14) with a second platform (15) and a cannular middle body (17) which mounts the first basal body (11) to the second basal body (14). The section (13) of the first basal body (11) exserted relative to the first platform locates in a first end part (18) of the cannular middle body (17), the section (16) of the second basal body (14) exserted relative to the second platform locates in a second end part (19), which are guided rotatablely by screw thread separately. Thus by means of the rotatable cannular middle body (17), on the one hand, the middle body (17) can be adjusted relative to the first basal body (11) telescopically, on the other hand, the second basal body (14) can be adjusted relative to the middle body (17) telescopically, that is the first basal body (11) and the second basal body (14) move in the same direction or in the different direction, which is based on the rotary direction of the middle body (17).

Description

technical field [0001] The invention relates to a lifting device, in particular to a crankshaft bearing lifting device for installing a crankshaft bearing into an internal combustion engine or removing a crankshaft bearing from an internal combustion engine. Background technique [0002] In order to repair the internal combustion engine, in some cases the crankshaft bearings in the internal combustion engine need to be dismounted and refitted, wherein this is done by means of a lifting device so that the crankshaft bearings can be moved during assembly and disassembly. As a matter of practice, a lifting device based on the lever principle is used here. This lever-based lifting device uses a non-linear lifting stroke. Furthermore, if such a lever crane is to have a low overall height in the extended state, it is difficult to provide a large working distance. Contents of the invention [0003] Proceeding from this, the task of the present invention is to provide a novel li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F3/10
CPCB66F3/10B66F3/08B66F11/00
Inventor P·德鲁克米勒W·米歇勒
Owner MAN B & W DIESEL AS
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