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Fixtures for installation of elevator slings

A technology for installers and slings, which is applied in the field of installation fixtures for elevator slings, can solve problems such as sling interference, adverse effects of sling winding operations, and lack of consideration, and achieve the effect of improving the winding operation

Active Publication Date: 2021-04-02
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, since the resin-covered sling as described in Patent Document 1 is wound around a drum, curl marks are likely to be generated, and the weight of the resin is reduced. Therefore, even if the sling is pulled out from the drum and hung downward The state where the curl mark cannot be removed
[0010] Therefore, in the technology described in Patent Document 1, when installing an elevator, even if the slings are hung downward, the slings cannot be hung straight, and the slings are twisted together to interfere with each other.
The mutual twisting of the slings may cause interference to the equipment in the hoisting passage, and the occurrence of jamming, etc., which will have a negative impact on the winding operation of the slings
[0011] In the technique described in Patent Document 1, the winding operation of the rope on the drive sheave is easy, but no consideration has been given to how to deal with curl marks, which is a problem unique to ropes covered with resin.

Method used

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  • Fixtures for installation of elevator slings
  • Fixtures for installation of elevator slings
  • Fixtures for installation of elevator slings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] use Figure 1 to Figure 5 A first embodiment of the present invention will be described. figure 1 It is an overall configuration diagram of the elevator according to the first embodiment of the present invention.

[0062] Such as figure 1 As shown, the elevator 1 in the first embodiment has an elevator car 3 and a counterweight 4 that move up and down in a hoistway 2 provided in a building, and a sling 5 that supports the elevator car 3 and the counterweight 4 , the winch 6 that makes the elevator car 3 and the counterweight 4 move up and down, a plurality of steering pulleys 7 for winding the sling 5 and being arranged on the top of the hoistway 2; and fixing the terminal of the sling 5 At the end portion 9 of the sling of the building beam 8 protruding from the building. A pulley 40 is provided on the balance weight 4 , and a sling 5 is wound around a sling groove of the pulley 40 . The hoist 6 is provided with a drive pulley 60 , and the rope 5 is wound around a ...

Embodiment 2

[0082] Next, use Figure 6 A second embodiment of the present invention will be described. Figure 6 It is an external perspective view of an elevator rope installation jig according to a second embodiment of the present invention. The same reference numerals are assigned to the same structures as those in the first embodiment, and description thereof will be omitted.

[0083] In the second embodiment, instead of the pulley 21 of the installation jig 20 in the first embodiment, a hook 26 (sling contact member) is provided. The hook 26 is formed in a U-shape opened downward, and a plurality of U-shaped parts are provided in accordance with the number of slings to be installed. In this embodiment, in order to hang three slings, three U-shaped hooks are connected and arranged.

[0084] The bracket 24a connected to the hook 26 is provided with an opening and closing fitting 25, and the bracket 24a and the weight 23 are connected. In this embodiment, the opening and closing fit...

Embodiment 3

[0090] Next, use Figure 7 A third embodiment of the present invention will be described. Figure 7 It is an external perspective view of an elevator rope installation jig according to a third embodiment of the present invention. The same reference numerals are assigned to the same structures as those of the first and second embodiments, and description thereof will be omitted.

[0091]In the third embodiment, instead of the hook 26 of the attachment jig 20 in the second embodiment, a hook 27 having an opening is provided. One end of the hook 27 is constituted by an arm portion 27a (connection member) connected to the weight 23 via a link 28, and the other end is constituted by an open hook portion 27b (sling contact member). The hook part 27b of the hook 27 is provided in plural in accordance with the number of installed slings. In this embodiment, the three hooks 27b are not provided in order to hang three slings. A link 28 connected to the weight 23 is provided on the a...

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Abstract

To solve a problem of a rope covered with insulating resin, in which the ropes cannot be hung vertically as they are twisted and interfering with each other when hanging downward for installing, because the ropes have a curling tendency; the curling can cause an adverse effect on roping work by interfering with or be caught by equipment inside a hoistway.SOLUTION: An installation tool comprises: a pulley 21 on which a rope 5 is hooked; a shaft 22 which rotatably supports the pulley 21; a weight 23 which applies tension to the rope 5; and two brackets 24 (24a and 24b) which connect both ends of the shaft 22 and the weight 23. A gap is formed between at least one bracket 24a out of the two brackets 24 (24a and 24b) and the weight 23, and a detachable opening-closing metal fitting 25 is provided on the at least one bracket 24a to fill the gap.SELECTED DRAWING: Figure 4

Description

technical field [0001] The invention relates to a fixture for installing a sling for an elevator. Background technique [0002] Usually, the elevator car of an elevator is suspended by a sling, and the sling is wound around a driving sheave of a hoist, and the driving force is transmitted by friction between the sling groove on the surface of the sheave and the sling to move the elevator car up and down. [0003] However, for example, in an elevator without a machine room in which a hoist is installed in a hoistway, downsizing of the hoist is required in order to reduce the space in the hoistway. As a means of realizing this, there is a reduction in the diameter of the drive sheave. By reducing the diameter of the drive sheave, the torque of the hoist can be reduced, and the size of the motor can be reduced, so the hoist can be downsized. [0004] However, since the diameter of the driving sheave needs to be 40 times or more the diameter of the sling (elevator standard: EN...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B7/06
Inventor 前田亮中山真人
Owner HITACHI LTD