DE10247390B3 - Chain or cable lifting winch has drive housing and lifting chain or cable each suspended from fixed point of support framework - Google Patents

Abstract

The chain or cable lifting winch (1) has a drive housing (2) suspended from a fixed point of a support framework, provided with an opening (5) for passage of a lifting chain or cable (3), operated by a motor and fitted with a load carrier (8a), via which the lifting chain or cable can be attached to the fixed point of the support framework.

Description

The invention relates to a hoist, in particular a chain or cable hoist, according to the preamble of the claim 1.

From the DE 198 51 708 A1 a cable with a housing is already known, which can be suspended by means of a hook attached to the housing at a fixed point of a supporting structure, for example a hook on a support. Such a cable pull has a motor drive which drives a cable drum on which the cable can be wound and unwound. The rope exits through an outlet opening and is provided at its free end with a load hook for receiving a load. Winding and unwinding the rope causes the load to be raised and lowered.

A disadvantage of this cable pull is then that the ex post Applying a reeving is a relatively large effort.

Next is from the DE 198 49 693 A1 Chain hoist known, in which the free chain end is attached to the housing for reeving.

This chain hoist has the disadvantage that he's from the start for the double load must be designed.

Furthermore, from the patent US 5 725 199 a pneumatically driven chain hoist is known, the chain is reeved over a bottom block. The chain run back from the bottom block is attached to the chain hoist in the area of its suspension.

The object of the invention is then to propose a hoist with low reeving Retrofittable effort is.

The task is characterized by the characteristics of claim 1 solved. The subclaims contain advantageous configurations of the hoist.

The solution provides that either To achieve reeving, a bottom block with deflecting agents is provided about which the traction device to the housing is returned the attachment of the traction means at the fixed point by means of the load suspension means he follows. This way the maximum allowable Double the load on the load handler without laying it out for larger loads to have to. Also enables fast and easy reeving.

A simple execution of the Hoist provides that the load handler is at the fixed point suspendable Load hook is.

The housing itself can be easily detachably attached to the fixed point when on the housing Clasp is provided.

To prevent the housing from skewing when and to avoid discharge, the support element is an intermediate Metal plate formed, the three at the corner points of an imaginary Has triangular parallel through openings in which side by side the case hook and the load hook and above a support hook attached to the fixed point to hang of the entire hoist including the bottom block can be attached.

Good traction mechanism guidance achieved when the deflecting means freely rotatable in the bottom block stored role for a rope or a freely rotatable sprocket for a chain as a traction device.

The reeving can be done without Special aids are made when the bottom block designed to be foldable and the traction means with the bottom block unfolded can be inserted without tools.

Narrow construction around the bottom block To run to be able it is proposed that the housing a vertical through opening or vertical longitudinal groove through which the returned traction means runs, small by the distance between the two traction devices running past each other to keep.

An embodiment of the invention is described below with reference to a drawing. Show it:

1 is a schematic three-dimensional representation of a hoist and

2 the hoist according to 1 in a side view.

1 shows a schematic representation of a hoist 1 that is a housing 2 has, in which a motor drive with a rope drum (both not shown) for a rope 3 located. The housing 2 is with a pivotable about a horizontal axis housing hook 4 for releasably attaching the hoist 1 provided at a fixed point, not shown, of a supporting structure.

The rope 3 passes through a housing opening 5 outwards and runs vertically down to a bottom block 6 , where there is a freely rotatable roller (not shown) back up to the hoist 1 is led. At the lower end of the bottom block there is a bottom block load hook 7 , which is pivoted about a vertical axis. The rope led back up again 3 is at the top using a load hook at the end of the rope 8th trained load handler 8a attached, and not to the hoist 1 , but at the fixed point of the supporting structure. The attachment to the supporting structure is carried out via an intermediate metal plate 9 , which three parallel through openings arranged at the corner points of an imaginary triangle 10 having. The load handler 8a and the case hook 4 are in the two adjacent openings 10a . 10c hooked. By means of the passage opening 10b can the metal plate 9 be attached to the support structure, for example by hanging in a support hook provided there.

By the distance between the two below the hoist 1 in 1 parallel ropes 3 The case has to be kept as small as possible 2 a vertical longitudinal groove open to the side 11 through which the returned rope 3 runs.

2 shows the hoist according to 1 in a side view.

1

hoist

2

casing

3

rope

4

Clasp

5

housing opening

6

Bottom block

7

Under Bottle hook

8th

load hook

9

metal plate

10 10a - c

Through opening

11

longitudinal groove

Claims (7)

Hoist ( 1 ), in particular chain or cable hoist, with a housing that can be suspended from a fixed point of a supporting structure ( 2 ), with one on the housing ( 2 ) provided outlet opening ( 5 ) for a motor-driven traction device ( 3 ) on which a lifting device that can be moved up and down ( 8a ) is arranged for a load, whereby optionally a bottom block (to achieve a reeving 6 ) is provided with deflection means via which the traction means ( 3 ) to the housing ( 2 ) is returned, characterized in that the attachment of the traction means ( 3 } at the fixed point using the load handler ( 8a ) he follows. Hoist ( 1 ), according to claim 1, characterized in that the load suspension means ( 8a ) a load hook that can be attached to the fixed point ( 8th ) is. Hoist ( 1 ), according to one of the preceding claims 1 or 2, characterized in that on the housing ( 2 a case hook ( 4 ) for releasably attaching the hoist ( 1 ) is provided at the fixed point. Hoist ( 1 ), according to one of the preceding claims 1 to 3, characterized in that the supporting structure as a supporting element is an intermediate metal plate ( 9 ), which has three parallel through openings located at the corner points of an imaginary triangle ( 10a - c) in which the housing hooks ( 4 ) and the load hook ( 8th ) and at the top a support hook attached to the fixed point for hanging the entire hoist ( 1 ) including the bottom block ( 6 ) can be attached. Hoist ( 1 ), according to one of the preceding claims 1 to 4, characterized in that the deflecting means in each case one in the bottom block ( 6 ) freely rotatable roller for a rope ( 3 ) or a freely rotatable sprocket for a chain as a traction device. Hoist ( 1 ), according to one of the preceding claims 1 to 5, characterized in that the bottom block ( 6 ) designed to be foldable and the traction mechanism ( 3 ) with opened bottom block ( 6 ) can be inserted without tools. Hoist ( 1 ), according to one of the preceding claims 1 to 6, characterized in that the housing ( 2 ) a vertical through opening or a vertical longitudinal groove on the side ( 11 ) through which the returned traction device ( 3 ) runs by the distance between the two traction devices running past each other ( 3 ) keep small.