Asymmetric progressive safety gear

A safety gear, progressive technology, applied in the field of U-shaped leaf spring asymmetric progressive safety gear, can solve the problems of heavy weight and large volume, and achieve the effects of light weight, small volume, and improved safety and reliability

Active Publication Date: 2009-11-11
HANGZHOU HUNING ELEVATOR PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention discloses an asymmetric progressive safety gear that can prevent the elevator car from moving laterally when the elevator car or counterweight stops, which not only solves the technical problems of large volume and heavy weight in the symmetrical progressive safety gear , and solve many technical problems caused by the movement of the elevator car in the existing asymmetric progressive safety gear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment one: if Figure 1-6 As shown, the safety gear includes a clamp body 1, a U-shaped leaf spring 2, a friction plate 3, a moving wedge 4, a sliding wedge 5, a return spring 6, a roller row 7, and a slider 9.

[0072] The pliers body 1 is fixedly installed on the elevator car or the counterweight, and the pliers body 1 is hollowed out to reduce its weight and save manufacturing cost. The upper and lower sides 11, 12 of the pliers body 1 respectively form a gap, and the gap on the lower side 12 is larger than the gap on the upper side 11. The elevator guide rail 8 passes through two gaps longitudinally, and the elevator guide rail 8 is not a part of the safety gear.

[0073] The top 11 and the bottom 12 of the pliers body offer slideways 111, 121, and the slideways 111, 121 correspond up and down. A slider 9 is slidably inserted between the upper and lower slideways 111 and 121 on the right side of the notch, and the inner surface of the slider 9 (that is, the s...

Embodiment 2

[0083] Embodiment two: if Figure 7-10 As shown, the structure of this embodiment is arranged symmetrically with that of Embodiment 1.

Embodiment 3

[0084] Embodiment three: as Figure 11-14 As shown, the return spring 6 is assembled on the right side of the pliers body 1, and the type of the return spring at this time is an extension spring. One end of a spring 6 is respectively fixed on the upper and lower parts of the outer surface of the slide block 9 , and the other end of the spring 6 is fixedly connected with the pliers body 1 .

[0085] Other content of this embodiment is the same as that of Embodiment 1.

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Abstract

The invention relates to an asymmetric progressive safety gear, a gear body thereof is arranged at a car or a counterweight of an elevator, a guide track passes through the gear body, the guide track is taken as the boundary, a sliding block is inserted between the upper side and the lower side of the gear body on one side in a sliding manner, a friction plate is arranged on the inner side surface of the sliding block, the inner side surface of the friction plate is parallel to the guide track, and a spacing is kept; the sliding block is fixedly connected with one end of a U-shaped leaf spring; a moving wedge block is inserted between the upper side and the lower side at the other side of the gear body in a sliding manner, a pressing plate with a tilted inner side surface is respectively fixedly connected on the inside and the outside of the moving wedge block, and the moving wedge block is fixedly connected with the other end of the U-shaped leaf spring; a roller row is arranged between the moving wedge block and a sliding wedge block, the inner side surface is parallel to the guide track of the elevator, and a spacing is kept; the sliding wedge block is fixedly connected with a transmission mechanism, the transmission mechanism is controlled by a speed limiter to act; and a reset part is arranged between the moving wedge block and/or the sliding block and the gear body. The asymmetric progressive safety gear can prevent the transverse movement of the elevator car when the car or the counterweight of the elevator stops working, the size is small and the weight is light.

Description

【Technical field】 [0001] The invention belongs to the technical field of elevator safety devices, and in particular relates to a U-shaped leaf spring type asymmetric progressive safety gear which can prevent the elevator car or the counterweight from moving laterally when the elevator car or the counterweight is stopped. 【Background technique】 [0002] Progressive safety gear is an indispensable safety device for elevator operation. It is installed on the elevator car or the counterweight, and there is a channel along the longitudinal direction. There are wedges on both sides of the channel, and the two wedges pass through the guide rail. When the elevator car is in a normal running state, under the action of its own weight, the two wedges are at the bottom, and the clamping surface keeps a certain distance from the guide rail. When the elevator is in an abnormal state and the car falls rapidly and the speed reaches the action speed set by the speed limiter, the speed limite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/22
Inventor 邹家春陈明星
Owner HANGZHOU HUNING ELEVATOR PARTS CO LTD
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