CN202156852U

CN202156852U - Linkage type safety gear device

Info

Publication number: CN202156852U
Application number: CN2011202224598U
Authority: CN
Inventors: 罗海闽; 史洪涛; 李爱华
Original assignee: Beijing Shenghua Elevator Group Co Ltd
Current assignee: Beijing Shenghua Elevator Group Co Ltd
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2012-03-07
Anticipated expiration: 2021-06-28

Abstract

The utility model relates to a linkage type safety gear device, which comprises a plurality of safety gears and a plurality of safety gear drawing rods. Each of the safety gears is sleeved on a guide rail or auxiliary guide rail, fixed at the bottom of an elevator car and comprises a rotation speed limiter, a limiter steel wire, a plurality of upper tensioning wheels and a plurality of lower tensioning wheels, the limiter steel wire is a closed loop and sleeved in a supporting space formed by the rotation speed limiter, the upper tensioning wheels and the lower tensioning wheels, one ends of the safety gear drawing rods are arranged on the safety gears, and the other ends of the safety gear drawing rods are fixed on the limiter steel wire corresponding to the safety gears. According to the technical scheme, the safety gears can realize braking on the guide rail and the auxiliary guide rail at the same time on the condition with one safety gear control system, so that control of a large-tonnage safety gear is realized by the aid of one rotation speed limiter, and the problem that the guide rail and a guide rail support are easy to be loose after the safety gear applies a brake is eliminated during practical use of a large-tonnage elevator.

Description

The coordinated type safety tongs device

Technical field

The utility model relates to the safety catch that a kind of jacking equipment is used, and particularly relates to a kind of coordinated type safety tongs device.

Background technology

In the prior art, as shown in Figure 1, general jacking equipment; Caliper like the elevator safety clamp device only is set to a cover, and when car 1 moves up and down along guide rail 4, the caliper 2 of safety tongs is arranged on car 1 bottom; Rotate velocity limiter 6 and be separately positioned on top and bottom in hoistway with following expansion tightening wheel 7; Speed limiter wire rope 5 windings in the race that is rotating velocity limiter 6 and following expansion tightening wheel 7, the same moved further of speed limit steel rope and car, the safety tongs pull bar is fixed on the speed limiter wire rope.

When the elevator normal speed is moved; Safety tongs caliper 2 moves up and down with car 1 with safety tongs pull bar 3; Speed limiter wire rope 5 moves up and down with safety tongs pull bar 3 synchronously, and the moving velocity of speed limiter wire rope 5 and the relative moving speed of car are zero, and relative displacement is zero.

When reaching on the speed limit of rotating velocity limiter 6, the elevator overspeed operation prescribes a time limit; Rotation velocity limiter 6 is understood lockings and can not be rotated, and makes speed limiter wire rope 5 also can not move freely, and is pulled thereby drive safety tongs pull bar 3; And then safety tongs caliper 2 holds guide rail 4 tightly, and the overspeed of car 1 is contained.

As shown in Figure 2; In the prior art, the caliper 2 of safety tongs generally only acts on the guide rail 4, and the elevator tonnage is big more; Impact to guide rail 4 is also just big more; Potential mechanical breaking, aging risk are big more, in the practical application of large-tonnage elevator, because the example that causes guide rail and rail brackets to get loose after the braking of the caliper of safety tongs has.

Many sets of safety tongs system is installed, and it is worthless using that a plurality of rotation velocity limiters come safety tongs is separately controlled, and there is error the speed trigger point of rotating between the velocity limiter, and it is unpractical that a plurality of rotation velocity limiters move simultaneously.

Summary of the invention

In view of this; The main purpose of the utility model is to provide a kind of coordinated type safety tongs device; Through the present technique scheme, realize that a speed-limit device controls a plurality of safety tongss that are arranged on guide rail, the auxiliary guide rail, thereby remedied existing defective in the prior art.

In order to achieve the above object; The technical scheme of the utility model is achieved in that a kind of coordinated type safety tongs device; Comprise several safety tongss and several safety tongs pull bars; Said safety tongs is sleeved on guide rail or the auxiliary guide rail, and safety tongs is fixed on the car bottom, includes to rotate velocity limiter, speed limiter wire rope, expansion tightening wheel and several following expansion tightening wheels on several; Said speed limit steel rope is a closed circular; The speed limit steel wire loop be contained in rotate velocity limiter with several go up expansion tightening wheel with several down in supporting and space of expansion tightening wheel formation, an end of said safety tongs pull bar is arranged on the safety tongs, the other end of safety tongs pull bar be fixed on the corresponding speed limit steel rope in safety tongs position on.

Said supporting and space includes big rotational support and little rotational support; Said big rotational support is made up of the rotation velocity limiters that are positioned at four jiaos of places, last expansion tightening wheel and two following expansion tightening wheels; More than one said little rotational support is arranged on the interior guide rail of big rotational support or the next door of auxiliary guide rail; Said little rotational support goes up expansion tightening wheel by one and two following expansion tightening wheels constitute, and said speed limit steel wire loop is contained on big rotational support and the little rotational support.

Said safety tongs pull bar is fixed on the speed limiter wire rope position with the identical moving direction of car.

The technique effect that the utility model reaches is following: a kind of coordinated type safety tongs device; Through the present technique scheme, under a sets of safety tongs control system, the realization safety tongs is not still braked on guide rail; And on auxiliary guide rail, brake simultaneously; With the large-tonnage safety tongs control that has realized rotating under the velocity limiter, and stopped in the practical application of large-tonnage elevator, because the example that causes guide rail and rail brackets to get loose after the safety tongs braking at one.

Description of drawings

Fig. 1 is the structural representation of safety tongs device in the prior art.

Fig. 2 is the structural representation of the safety tongs device of large-tonnage jacking equipment in the prior art

Fig. 3 is the structural representation of the utility model coordinated type safety tongs device.

Among the figure: 1 car, 2 safety tongss, 3 safety tongs pull bars, 4 guide rails, 5 speed limiter wire ropes, 6 rotate expansion tightening wheel, 10 big rotational support, 11 little rotational support on velocity limiters, 7 times expansion tightening wheels, 8 auxiliary guide rails, 9.

The specific embodiment

To combine accompanying drawing that specific embodiment in the utility model is done further explain below.

As shown in Figure 3; The coordinated type safety tongs device that the utility model relates to; Comprise several safety tongss 2 and several safety tongs pull bars 3; Said safety tongs 2 is sleeved on guide rail 4 or the auxiliary guide rail 8, and safety tongs 2 is fixed on car 1 bottom, also includes to rotate velocity limiter 6, speed limiter wire rope 5, expansion tightening wheel 9 and several following expansion tightening wheels 7 on several; Said speed limit steel rope 5 is a closed circular; Speed limit steel rope 5 be sleeved on rotate velocity limiter 6 with several go up expansion tightening wheel 9 with several down in supporting and space of expansion tightening wheel 7 formations, an end of said safety tongs pull bar 3 is arranged on the safety tongs 2, the other end of safety tongs pull bar 3 be fixed on the corresponding speed limit steel rope 5 in safety tongs 2 positions on.

Said supporting and space includes big rotational support 10 and two little rotational support 11; Said big rotational support 11 is made up of the rotation velocity limiters 6 that are positioned at four jiaos of places, last expansion tightening wheel 9 and two following expansion tightening wheels 7; Two said little rotational support 11 are arranged on guide rail 4 or the next door of auxiliary guide rail 8 in the big rotational support 10; Said little rotational support 11 goes up expansion tightening wheel 9 by one and two following expansion tightening wheels 7 constitute, and said speed limit steel wire loop 5 is contained on big rotational support 10 and the little rotational support 11.

Said safety tongs pull bar 3 is fixed on the position with the speed limiter wire rope 5 of car 1 identical moving direction.

The above is merely the preferred embodiment of the utility model, is not the protection domain that is used to limit the utility model.

Claims

1. coordinated type safety tongs device; Comprise several safety tongss and several safety tongs pull bars, said safety tongs is sleeved on guide rail or the auxiliary guide rail, and safety tongs is fixed on the car bottom; It is characterized in that; Include and rotate velocity limiter, speed limiter wire rope, expansion tightening wheel and several expansion tightening wheel down several on, said speed limit steel rope is a closed circular, the speed limit steel wire loop be contained in rotate velocity limiter with several go up expansion tightening wheel with several under in supporting and space of expansion tightening wheel formation; One end of said safety tongs pull bar is arranged on the safety tongs, the other end of safety tongs pull bar be fixed on the corresponding speed limit steel rope in safety tongs position on.

2. coordinated type safety tongs device according to claim 1; It is characterized in that; Said supporting and space includes big rotational support and little rotational support; Said big rotational support is made up of the rotation velocity limiters that are positioned at four jiaos of places, last expansion tightening wheel and two following expansion tightening wheels; More than one said little rotational support is arranged on the interior guide rail of big rotational support or the next door of auxiliary guide rail, and said little rotational support goes up expansion tightening wheel by one and two following expansion tightening wheels constitute, and said speed limit steel wire loop is contained on big rotational support and the little rotational support.

3. coordinated type safety tongs device according to claim 1 and 2 is characterized in that, said safety tongs pull bar is fixed on the speed limiter wire rope position with the identical moving direction of car.