CN2556178Y

CN2556178Y - Elevator two-way overspeed protective device

Info

Publication number: CN2556178Y
Application number: CN 02263084
Authority: CN
Inventors: 李春涛; 范晓斌; 周林
Original assignee: 李春涛
Priority date: 2002-07-10
Filing date: 2002-07-10
Publication date: 2003-06-18
Anticipated expiration: 2012-07-10

Abstract

The utility model discloses an elevator two-way over-speed protective device, comprising a two-way speed limiting device, a two-way speed limiting device and a rope clamping device which are connected by a connecting rope. The utility model has the advantages of reasonable structure, can effectively protect an elevator when the elevator is running at an over-speed uplink and downlink and can realize the safe operation of the elevator.

Description

Bidirection overspeed protective device of elevator

Technical field:

The utility model relates to a kind of fender guard of elevator overspeed operation.

Background technology:

Present elevator overspeed protecting device has only when elevator during in the down direction overspeed, and mechanism is protected by safety tongs, when elevator exceeds the speed limit at up direction, can not be protected.

Goal of the invention:

It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and makes elevator when up, descending driving over the speed limit, the bidirection overspeed protective device of elevator that can both be protected.

Technical solution of the present utility model is:

A kind of bidirection overspeed protective device of elevator, its feature: comprise bidirectional speed limiter, bidirectional speed limiter is connected with wire holder; Bidirectional speed limiter has rope sheave, rope sheave is captiveed joint with main shaft, the fixed friction wheel is connected with bearing for spindle, rope sheave both sides dress centrifugal film, lobe is set on the centrifugal film, adorn centrifugal on the centrifugal film, the centrifugal film of rope sheave both sides combines by two small pieces, the friction wheel that is connected on the rope sheave with axle is loaded on the nearside that fixed friction is taken turns, friction wheel is with two the small pieces centrifugal film is equal captives joint, dress amount of compression control apparatus on the centrifugal film, the fixed friction wheel is packed on the support, dress limit switch actuating mechanism on the support, the limit switch actuating mechanism is connected with limit switch, support is connected with base plate with bearing pin, and the pivot shaft that is fixed on the base plate is installed on the support, pocketed springs on the pivot shaft; Wire holder has the slide shaft that is contained in the arcuate socket of support both sides, slide shaft below dress compression spring, and slide shaft is captiveed joint with the both sides link arm, and the both sides link arm is connected with moving slipper, and moving slipper inboard sets slipper, adorns latch hook on the support; One end of tricing line is captiveed joint with the support of two-way commutator, and the other end of tricing line is connected with the latch hook of wire holder.

The amount of compression control apparatus comprises that an end is fixed on the axle on the centrifugal film, and the other end of axle is installed in the hole of stay bearing plate, and stay bearing plate is captiveed joint with centrifugal film, the centrifugal spring of suit on the axle, and centrifugal spring is supported on the kickboard, dress amount of compression adjustment nut on the axle.The limit switch actuating mechanism comprises centering block, and centering block re-packs with circle and is connected, the round connection limit switch that re-packs.Wire holder decide on slipper and the moving slipper dress braking liner.

The utility model is rational in infrastructure, and elevator can both be effectively protected when up, descending driving over the speed limit, and realizes the safe operation of elevator.

Description of drawings:

Fig. 1 is the configuration diagram of an embodiment of the utility model.

Fig. 2 is the A-A view of Fig. 1.

Fig. 3 is the left view of bidirectional speed limiter among Fig. 1.

Fig. 4 is the back view of bidirectional speed limiter among Fig. 1.

Fig. 5 is the left view of wire holder among Fig. 1.

Fig. 6 is the birds-eye view of wire holder among Fig. 1.

Fig. 7 is the B-B view of Fig. 1.

A kind of bidirection overspeed protective device of elevator comprises bidirectional speed limiter, and bidirectional speed limiter is connected with wire holder; Bidirectional speed limiter has rope sheave 1, rope sheave 1 is captiveed joint with main shaft 2, fixed friction wheel 3 is connected with main shaft 2 usefulness bearings, rope sheave 1 both sides dress centrifugal film 4, lobe 5 is set on the centrifugal film 4, adorn centrifugal 6 on the centrifugal film 4, the centrifugal film 4 of rope sheave 1 both sides combines by two small pieces, be connected the nearside that friction wheel 8 on the rope sheave 1 is loaded on fixed friction wheel 3 with axle 7, friction wheel 8 is with two the small pieces centrifugal film is equal captives joint, dress amount of compression control apparatus 9 on the centrifugal film 4, fixed friction wheel 3 is packed on the support 10, dress limit switch actuating mechanism 11 on the support 10, limit switch actuating mechanism 11 is connected with limit switch 12, support 10 usefulness bearing pins 13 are connected with base plate 14, and the pivot shaft 15 that is fixed on the base plate 14 is installed on the support 10, and pocketed springs 16 on the pivot shaft 15; Wire holder has the slide shaft 19 that is contained in the support 17 both sides arcuate sockets 18, slide shaft 19 belows dress compression spring 20, slide shaft 19 is captiveed joint with both sides link arm 21, and both sides link arm 21 is connected with moving slipper 22, moving slipper 22 inboards set slipper 23, dress latch hook 24 on the support 17; One end of tricing line 25 is captiveed joint with the support 10 of two-way commutator, and the other end of tricing line 25 is connected with the latch hook of wire holder 24.

Above-mentioned amount of compression control apparatus 9 comprises that an end is fixed on the axle 26 on the centrifugal film 4, the other end of axle 26 is installed in the hole of stay bearing plate 27, stay bearing plate 27 is captiveed joint with centrifugal film 4, the centrifugal spring 28 of suit on the axle 26, centrifugal spring 28 is supported on the kickboard 29, dress amount of compression adjustment nut 30 on the axle 26.Above-mentioned limit switch actuating mechanism 11 comprises centering block 31, and centering block 31 re-packs with circle and 32 is connected, the circle 32 connection limit switches 12 that re-pack.Wire holder decide on slipper 23 and the moving slipper 22 dress braking liner 33.

Principle of work of the present utility model is: when elevator moves with normal speed, keep certain clearance between friction wheel 8 and the fixed friction wheel 3, rope sheave 1 can rotate freely, when elevator overspeed moves the responsiveness of the limit switch 12 that reaches setting, centrifugal 6 since action of centrifugal force outwards throw away, therefore lobe 5 on the centrifugal film 4 touches centering block 31, centering block 31 drives round 32 rotations that re-pack, move and touch limit switch 12, thereby cut off the power supply of towing machine, elevator traction machine is stopped operating, when rope sheave 1 continuation acceleration rotation reaches the mechanical action speed of setting, drive friction wheel 8 for centrifugal 6 and turn over certain angle and with fixed friction wheel 3 friction takes place and lock, rope sheave 1 so and be braked.This moment, elevator was if upwards operation, then car is rotated further by bidirectional speed limiter rope belt running rope wheel 1, owing to making whole rope sheave 1 part of bidirectional speed limiter, the friction force between bidirectional speed limiter steel rope 34 and the rope sheave 1 turns an angle around bearing pin 13, spring 16 is compressed, therefore make tricing line 25 that certain displacement takes place, and the latch hook 24 of pulling wire holder, make the slide shaft 19 that is locked under the normal circumstances on the latch hook under the driving of compression spring 20, upward movement, slide shaft 19 near traction steel-cable 35, relies on the braking liner 33 and the friction of traction steel-cable 35 to slow down by the moving rotor plate 22 of link arm 21 pullings, the lift car of stop hypervelocity.If this moment, elevator was downward operation,, the friction force between bidirectional speed limiter steel rope 34 and the rope sheave 1 makes elevator brake because lifting conventional safety tongs system.

Claims

1, a kind of bidirection overspeed protective device of elevator is characterized in that: comprise bidirectional speed limiter, bidirectional speed limiter is connected with wire holder; Bidirectional speed limiter has rope sheave (1), rope sheave (1) is captiveed joint with main shaft (2), fixed friction wheel (3) is connected with bearing with main shaft (2), rope sheave (1) both sides dress centrifugal film (4), lobe (5) is set on the centrifugal film (4), adorn on the centrifugal film (4) centrifugal (6), the centrifugal film (4) of rope sheave (1) both sides combines by two small pieces, the friction wheel (8) that is connected on the rope sheave (1) with axle (7) is loaded on the nearside that fixed friction is taken turns (3), friction wheel (8) is with two the small pieces centrifugal film is equal captives joint, centrifugal film (4) is gone up dress amount of compression control apparatus (9), fixed friction wheel (3) is packed on the support (1) 0, support (10) is gone up dress limit switch actuating mechanism (11), limit switch actuating mechanism (11) is connected with limit switch (12), support (10) is connected with base plate (14) with bearing pin (13), and the pivot shaft (15) that is fixed on the base plate (14) is installed on the support (10), and pivot shaft (15) is gone up pocketed springs (16); Wire holder has the slide shaft (19) that is contained in support (17) the both sides arcuate sockets (18), slide shaft (19) below dress compression spring (20), slide shaft (19) is captiveed joint with both sides link arm (21), both sides link arm (21) is connected with moving slipper (22), moving slipper (22) inboard sets slipper (23), and support (17) is gone up dress latch hook (24); One end of tricing line (25) is captiveed joint with the support (10) of two-way commutator, and the other end of tricing line (25) is connected with the latch hook (24) of wire holder.

2, bidirection overspeed protective device of elevator according to claim 1; it is characterized in that: amount of compression control apparatus (9) comprises that an end is fixed on the axle (26) on the centrifugal film (4); the other end of axle (26) is installed in the hole of stay bearing plate (27); stay bearing plate (27) is captiveed joint with centrifugal film (4); axle (26) is gone up the centrifugal spring of suit (28); centrifugal spring (28) is supported on the kickboard (29), and axle (26) is gone up dress amount of compression adjustment nut (30).

3, bidirection overspeed protective device of elevator according to claim 1 and 2 is characterized in that: limit switch actuating mechanism (11) comprises centering block (31), and centering block (31) is connected with round re-pack (32), and round re-pack (32) connect limit switch (12).

4, bidirection overspeed protective device of elevator according to claim 1 and 2 is characterized in that: decide slipper (23) and the moving slipper (22) of wire holder are gone up dress braking liner (33).