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Shock absorbing hitch

一种联结器、阻尼器的技术，应用在升降机系统领域，能够解决增加成本和人力、结构要求、液压系紧装置昂贵等问题

Inactive Publication Date: 2006-08-16
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an example, hydraulic tie-downs are expensive and have structural requirements on the shaft pit floor, which in turn increases cost and manpower

Method used

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  • Shock absorbing hitch
  • Shock absorbing hitch
  • Shock absorbing hitch

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 An elevator system 20 is shown schematically, including a car 22 and a counterweight 24 . Load bearing members 26 , such as ropes or straps, support the car 22 and counterweight 24 for desired movement within the hoistway 28 . A conventional machine 30 includes a motor 32 and drive wheels 34 to effect the desired movement of the car 22 and counterweight 24 within the hoistway 28 in a conventional manner. This illustrative example includes guide pulleys 36 which guide the carrier part 26 as required.

[0022] The carrying member 26 in this example has one end connected to the car 22 and the other end connected to the counterweight 24 . A terminal device 40 connects one end of the carrier member 26 to a frame 42 of the car 22 . A portion of the cab 44 of the cab 22 is supported by the frame 42 in a conventional manner.

[0023] An end fitting 46 secures the opposite end of the carrier member 26 to the counterweight 24 .

[0024] Referring to FIGS. 2 and 3 , ...

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PUM

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Abstract

A shock-absorbing hitch termination (40) includes a terminating member (52) that moves against a first bias (62) responsive to a first level of tension on a load bearing member (26) associated with a car (22) and counterweight (24) in an elevator system (20). A support member (60) moves with the terminating members (52) against a second, passive bias (70) responsive to increased tension on the load bearing member (26). In one example, the second bias is provided by mechanical springs (70). In another example the second bias is provided by air springs. In still another example the second bias is provided by pressurized actuators (82). The shock-absorbing hitch termination may be supported for movement with the car, counterweight or both. In another example, the shock-absorbing hitch termination is provided in a stationary structure (90) within the elevator system.

Description

technical field [0001] The present invention generally relates to an elevator system. More particularly, the present invention relates to controlling tension on load-carrying components in elevator systems. Background technique [0002] Elevator systems typically include a car and counterweight that travel in opposite directions within a hoistway. Load bearing components such as ropes or straps support the car and counterweight for the required movement. In some cases, the tension on the load bearing components needs to be controlled within desirable limits to ensure proper traction and prevent unwanted stress on system components. [0003] An example situation is that during so-called car or counterweight jumps, undesirably large stresses are generated on the ropes. For example, car jumping occurs when the counterweight drops rapidly and hits a safety device or buffer near the bottom of the hoistway. Even after the counterweight has struck the safety device or buffer, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B7/08B66B7/06B66B7/10
CPCB66B7/085B66B7/10
Inventor R·法戈R·L·霍罗维尔
Owner OTIS ELEVATOR CO
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