CN2895356Y

CN2895356Y - Falling-proof plug device for elevator cage

Info

Publication number: CN2895356Y
Application number: CN 200620041657
Authority: CN
Inventors: 钟跃; 王伟峰
Original assignee: YONGDA ELEVATOR EQUIPMENT CO Ltd SHANGHAI
Current assignee: Yungtay Elevator Equipment China Co Ltd
Priority date: 2006-05-10
Filing date: 2006-05-10
Publication date: 2007-05-02
Anticipated expiration: 2016-05-10

Abstract

The falling-free bolt device for the lift box comprises a falling-free flashboard provided on the guide rail, a motional falling-free bolt on the top of the lift box and a switch on the beam body on the top of the lift box. It is characterized in that a groove is provided on the end of the falling-free bolt, a correlated on-off action wheel is provided on the switch, and the on-off action wheel moves on the groove and the surface of the falling-free bolt to switch on and off. The groove bottom is arc shaped and spreads around the falling-free bolt. A cutting notch for changing the switch is arranged on the beam body part near the switch for easy switch changes. With such a cutting notch, the damaged switch can be changed. The utility model avoids the accidents of fusing or short circuit in the contacting point of the switch because the falling-free bolt switch cuts off the power forcefully. The utility model has the advantages of a simple structure, security and stability, and accurate braking.

Description

Elevator cage fall arrest bolt device

Technical field

The utility model relates to the elevator cage falling proof device, particularly elevator cage fall arrest bolt device.

Prior art

Along with The development in society and economy, skyscraper is more and more, and elevator makes requisite as a kind of vertical transportation instrument.When elevator broke down, the maintainer needed to check the parts in the hoistway on the cab top, if elevator will threaten maintainer's safety because certain accidental cause causes falling or rising, cause a serious accident.In general, all be provided with falling proof device at existing elevator, but existing falling proof device comprises latch, latch plate, switch, in the pig-tail wire access security loop of switch, but its switch is not to rely on the action of latch to disconnect, when as the contact of switch welding or short circuit taking place like this, will cause unexpected situation to occur.

The utility model content

It is a kind of simple in structure that technical problem to be solved in the utility model is to provide, reliable in action and can force the open circuited elevator cage fall arrest bolt device that prevents the elevator cage accidental falling of switch by the action of latch.This device can force switch to disconnect by the action of latch when the parts that need as the maintenance personnel to check on the cab top in the hoistway, has avoided the appearance of unexpected situation.

The technical matters that the utility model solved can be achieved through the following technical solutions:

A kind of elevator cage fall arrest bolt device, comprise the fall arrest plate that is fixed on the guide rail and be movably arranged on the fall arrest latch at elevator cage top and be installed in switch on the upper beam body at elevator cage top, it is characterized in that: be provided with a groove at described fall arrest latch one end, have on the described switch one with the switch motion of switch gearing wheel, described switch motion wheel at the groove of fall arrest latch and apparent motion so that switch closure and disconnection.

The bottom land camber of described groove and along the circumferential distribution of fall arrest latch.

For the ease of changing described switch, the position near switch on described upper beam body offers switch replacing otch.By this otch, can change the switch that has damaged.

Under normal circumstances, the switch motion wheel on the switch of the present utility model touches in the groove of fall arrest latch, and switch is in normal on-state, and elevator normally moves.When the maintainer needs to check parts in the hoistway on the cab top, after running to cab near the zone that parts for maintenance is maintained, promoting the fall arrest latch is inserted in the pin hole of putting on the plate that falls, the groove of switch motion wheel from the fall arrest latch on the switch skids off the surface that moves to the fall arrest latch and rises simultaneously, forces switch to disconnect by force.After maintenance finished, reversing sense promoted the fall arrest latch and withdraws from the pin hole of putting on the plate that falls, the switch motion wheel on the switch again in the surface of fall arrest latch is slipped to groove the fall arrest latch again and descend, switch closure, elevator can normally move.The utility model is because fall arrest latch pull switch is to force it is opened circuit, so can avoid contact because of switch as the unexpected situation appearance that welding or short circuit cause takes place.The utlity model has simple in structurely, safe and reliable, brake advantage accurately.

Description of drawings

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is in entopic scheme drawing for elevator cage fall arrest of the present utility model with fall arrest latch in the bolt device.

Fig. 2 is in the scheme drawing of insertion position with fall arrest latch in the bolt device for elevator cage fall arrest of the present utility model.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth this utility model.

Referring to Fig. 1 and Fig. 2, a kind of elevator cage fall arrest bolt device, it is put the plate 2 that falls and locks on guide rail, and the compartment of terrain is provided with a plurality of pin holes 21 on this fall arrest plate 2; Fall arrest latch 1 is a round bar, and it is installed in the elevator cage top by door shape stroke guide groove 4.Be fixed with latch knob 11 on fall arrest latch 1, latch knob 11 extends radially out along fall arrest latch 1.Be positioned at switch 3 one ends at this fall arrest latch 1 and be provided with in the lump circumferential distribution groove 12 along fall arrest latch 1; The bottom land camber of groove 12.Fall arrest latch 1 can move vertically and insert or withdraw from a pin hole 21 of putting on the plate 2 that falls.Switch 3 is installed on the upper beam body 5 at elevator cage top, have one on this switch 3 and draw lead with the switch motion wheel 31 and of switch 3 interlock, this switch motion wheel 31 can be drawn lead and insert in the safety return circuit of elevator at the groove 12 and the apparent motion of fall arrest latch 1.For the ease of changing the switch 3 that damages, the position near switch 3 on upper beam body 5 offers switch replacing otch 51.

Under normal circumstances, the switch motion wheel 31 on the switch 3 touches in the groove 12 of fall arrest latch 1, and switch 3 is in normal on-state, and elevator normally moves.When the maintainer needs to check parts in the hoistway on the cab top, cab is run near the zone that parts for maintenance is maintained, promoting fall arrest latch 1 by latch knob 11 then is inserted in the pin hole 21 of putting on the plate 2 that falls, the groove 12 of switch motion wheel 31 from fall arrest latch 1 on the switch 3 skids off the surface that moves to fall arrest latch 1 and rises simultaneously, forces switch 3 to disconnect by force.Because the lead of drawing of switch is linked in the safety return circuit of elevator, this moment, elevator can't move, and made the maintainer of elevator safer.After maintenance finishes, promote fall arrest latch 1 by latch knob 11 reversing senses and withdraw from the pin hole of putting on the plate 2 that falls 21, switch motion on the switch 3 wheel 31 is again in the surface of fall arrest latch 1 is slipped to groove 12 the fall arrest latch 1 again and descend, switch closure, elevator can normally move.Fall arrest latch 1 is installed on the cab top, gets final product at any quadrant of four quadrants with guide rail and cab center.

Certainly; present embodiment is not limited to the utility model; to those of ordinary skill in the art; still can do multiple variation to present embodiment; therefore; every employing analog structure of the present utility model and similar variation thereof all should be listed the protection domain of protection domain claims of the present utility model in.

Claims

1, a kind of elevator cage fall arrest bolt device, comprise the fall arrest plate that is fixed on the guide rail and be movably arranged on the fall arrest latch at elevator cage top and be installed in switch on the upper beam body at elevator cage top, it is characterized in that: be provided with a groove at described fall arrest latch one end, have on the described switch one with the switch motion of switch gearing wheel, described switch motion wheel at the groove of fall arrest latch and apparent motion so that switch closure and disconnection.

2, bolt device according to claim 1 is characterized in that, the bottom land camber of described groove and along the circumferential distribution of fall arrest latch.

3, bolt device according to claim 1 is characterized in that, the position near switch on described upper beam body offers switch replacing otch.