CN201864426U

CN201864426U - Door lock for landing door of lift

Info

Publication number: CN201864426U
Application number: CN2010202336315U
Authority: CN
Inventors: 黄东凌; 汪青根; 蒋裕文
Original assignee: SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST
Current assignee: SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST
Priority date: 2010-06-21
Filing date: 2010-06-21
Publication date: 2011-06-15
Anticipated expiration: 2020-06-21

Abstract

The utility model provides a door lock for a landing door of a lift with the function of preventing personnel from falling into the lift well probably generated when the landing door of the lift is manually opened. An emergency unlocking device is fixed at the back of a lower hook along the horizontal door opening direction, is sequentially connected with a second lower hook arranged with the lower hook at the same direction as well as an upper door pocket, a first emergency unlocking device and a horizontal rotating plate, and is sequentially connected with the landing door, a second emergency unlocking device, a vertical rotating plate, a pull rope, a rotating rod, an upper hook and a convex plate; by additionally arranging the emergency unlocking device, the step of manually opening the landing door of the lift is mechanically guaranteed to be accordant with the safe operation standard for manually opening the landing door of the lift. The door lock ensures that the lift operating personnel who obtrusively opens the door obtains a time buffer, so that when the door lock is secondly unlocked after the landing door is firstly manually opened by the lift operating personnel, the personnel can stand in the front of a crack of the opened landing door of the lift and can face to the lift well, and can observe whether the lift car is at the correct floor through the crack of the opened landing door; therefore, the door lock can help the lift operating personnel to correctly judge the position of the lift car, and can prevent the lift operating personnel from falling into the lift well.

Description

The elevator door door lock

Affiliated technical field

The utility model relates to a kind of elevator door door lock, especially relates to a kind ofly can preventing the elevator operation personnel cause crashing into from layer door the elevator hoistways accident because of improper operation elevator door door lock effectively.

Background technology

Along with the fast development of elevator industry, elevator operating personnel casualty accident happens occasionally, and in these personnel casualty accidentses, it is one of modal elevator casualty accident that the elevator operating personnel crashes into hoistway from layer door.For this reason; relevant departments in all parts of the country draw lesson from it; strengthen management; as formulate corresponding elevator management system (the particularly management of layer door triangular key), stick safety instruction, the education of reinforcement elevator safety etc. at the layer door place of unblanking, these measures have reduced the generation of this class accident effectively, but because of various reasons; this class accident still idol has generation; trace it to its cause, except that elevator user violation operation, traditional layer every lock defencive function imperfection also is one of reason wherein.

Existing elevator door opening mode, use triangular key just can open arbitrary layer of door of elevator fully, one of purpose of opening elevator door is pushed up in order to enter car or sedan-chair, if do not observe the position of car in the hoistway earlier, then open a layer danger that has the hoistway that falls behind the door fully, simultaneously because the careless omission of triangular key management, also caused some layman to use triangular key to open to fall behind the elevator door accident of hoistway.Trace it to its cause, except the off one's guard and unprofessional external factor of operating personal thought, it also is the internal cause of accident potential that elevator door can simply directly be opened by triangular key fully.

The manual unlocking apparatus of known elevator door is to drive push rod (or other device) by triangular key to open the mechanical latch hook of layer door, then just can complete manually opened layer door by the crack between a door and its frame of opening.In the maintenance or the sedan-chair of overcoming difficulties during personnel, the people need be by opening the situation that elevator door enters car or observes elevator hoistways, because elevator door is the safety curtain of isolating hoistway and people playground, when lift car during, the danger of the hoistway that falls is just arranged during manually opened elevator door not at this stop.

At present, a step of using the elevator door triangular key to open layer door does not also have standard, and elevator circle but has a common recognition, that is: the step that will follow with key manual unlocking layer door be " one slowly, two see, three action, detailed process is as follows:

One, a hand is opened a layer door lock hook with layer door key, and the another hand is pushed layer door aside a seam, makes layer door unlikely closing under the effect of self-closing power.

Two, the layer every seam by opening, the position of observation lift car.

If the position of three cars (or sedan-chair top) is at this layer, both hands are pushed layer door (and gate) aside, enter car (or sedan-chair top).

But because of multiple reason, thin as indivedual elevator operation personal security consciousness, violation operation, link in the middle of saving is just pushed layer door open a bigger width when opening latch hook with layer door key, at this moment, if car (or sedan-chair top) is not at this layer, what elevator operation personnel faced will be an abyss, if think in elevator operation personnel's the subconsciousness that just (because be before that its car is parked in this layer, other people have reached other floor to car to car at this layer.Perhaps elevator display apparatus shows car at this layer, and in fact car not at this layer), add and wait more in a great rush at that time that accident is with regard to very likely generation.

Summary of the invention

In order to take precautions against the hoistway accident of falling with the contingent personnel of key operated elevator door, technical problem to be solved in the utility model provides a kind of elevator door door lock, change present elevator door and just can once directly open the mode of layer door by the triangular key operation fully, when using this elevator door door lock of triangular key manual unlocking, the action of opening the door for the first time can only be opened elevator door the width of 100-150mm (this width can effectively prevent personnel from falling hoistway), further open layer door fully and then must rotate the secondary energency-unlocking device that is located at layer reveal face once more or with pulling the moving opened layer of stay cord of face behind the door with triangular key.

The technical scheme that its technical matters that solves the utility model adopts is: by lock the door lock opening device that increases by a cover mechanical interlocking fender guard and match at the tradition stratum every; when layer door closed; rise to the bait and the engagement of following hook; hook is fixed on down the back of hook along the level direction of opening the door under the secondary, arranges in the same way with following hook.The head trim of a door lock opening device, energency-unlocking device, a horizontal flap are linked in sequence, layer door, the secondary energency-unlocking device of secondary door lock opening device, vertically flap, stay cord, bull stick, rise to the bait, flange is linked in sequence.

Compare with existing layer door energency-unlocking device, the beneficial effect of novel layer door unlocking apparatus is: can not once open layer door fully, layer door (and gate) is preceding opening fully, guarantee that by mechanical device the unlock staff must carry out a control step again, this control step has two kinds of methods, and the one, the secondary energency-unlocking device that rotates layer reveal face that be located at triangular key will be gone up latch hook and lift; The 2nd, with a hand put in layer behind the door face operate a stay cord, will go up latch hook once more and lift, thereby open layer door (and a gate).The purpose of this control step, be to provide a room and time of observing car position for the elevator operating personnel, before making it stand in the elevator door crack between a door and its frame of opening, and in the face of elevator hoistways, when carrying out unblanking the second time, stitch by an opened layer every and whether to observe lift car just at this layer, or stretching out one's hand layer subsequently behind the door during face pulling stay cord, if car is just at this layer, safety edge touching (layer door and the about 30mm in the gap of safety edge) by the back of the hand and gate, whether the sensation car helps its correct position of judging car at this layer, prevents to crash into the generation of hoistway accident from face.

For the danger that prevents that personnel from may cause because of air rage, existing elevator door triangulation chain that the position is set is all higher, this highly makes unlock staff's health when carrying out unlock operation be in deformation state, be difficult to when unblanking, observe the position of car, and newly-designed secondary energency-unlocking device or stay cord are arranged on the suitable height, have solved this problem.Another advantageous effects of the stay cord that increases is to have reduced in the car or personnel's (when lift car ground or sedan-chair top are lower than stop ground) or the pit personnel danger (the stay cord lower end position is lower) when opening layer every lock is gone up on the sedan-chair top.

Novel layer every lock is that with the maximum difference of existing layer every lock the process of opening the door must become the mechanical device of setting up because of novel layer every lock by such step operation by former triangular key use and management system regulations unlock staff the unlock staff is had to by such step operation.

Novel layer every lock can prevent effectively that not only the unlock staff is in that to open the crude an dimpetuous behavior of layer Men Shiyin or other former thereby cause the accident of the hoistway that falls, and door lock structure is simple, dependable performance, and the productive costs increase is seldom, do not change layer and see outdoors, do not influence the functions of use of existing elevator.

Description of drawings

Fig. 1 is a layer door when closing, the view of contour double hook layer every lock.

Fig. 2 be with layer door key rotate that an energency-unlocking device (11), rise to the bait (7) lift and with the out-of-gear view of following hook (9).

Fig. 3 be with layer door spur to the right, flange (6) and horizontal flap (5) be about to out-of-gear view.

Fig. 4 be with triangular key rotate the secondary energency-unlocking device (13) of layer reveal face or pull stay cord (1), rise to the bait (7) lift once more, with secondary under the out-of-gear view of hook (10).

The specific embodiment

An energency-unlocking device (11) is arranged on the bottom surface of head trim (8) of elevator door, head trim (8), an energency-unlocking device (11), horizontal flap (5) is linked in sequence, back at the following hook (9) that traditional elevator layer every locked increases hook (10) under the secondary, hook under the secondary (10) is fixed on down the back of hook (9) along the level direction of opening the door, arrange (see figure 1) in the same way with following hook (9), go up increase by one cover by secondary energency-unlocking device (13) at layer door (12) and rise to the bait (7), vertical flap (14), stay cord (1), the unlocking apparatus that bull stick (2) is formed, layer door (12), secondary energency-unlocking device (13), vertical flap (14), pull rope (1), bull stick (2), rise to the bait (7), flange (6) is linked in sequence.When by triangular key manual unlocking elevator door, hook (10) can limit width that elevator door pushed aside for the first time effectively in the Safe width scope of 100-150mm under the secondary that increases, the enough maintainers of the width of this scope observe the position of hoistway situation or car, enter car or sedan-chair top as needs, then can be by layer every seam of opening, rotate with triangular key and to be located at open the door secondary energency-unlocking device (13) on the side of layer door (12), or with pulling the moving layer stay cord of face (1) behind the door, make hook (10) jump out of mesh under rise to the bait (7) and the secondary, thereby can open elevator door fully, carry out next step work.

Describe below in conjunction with the principle of work of accompanying drawing contour double hook layer every lock:

When layer door closed, rise to the bait (7) and following hook (9) engagement, when needs manual unlocking layer door, rotate an energency-unlocking device (11) that is located on elevator door head trim (8) bottom surface with triangular key earlier, make horizontal flap (5) forward Y position (Fig. 2 A is to view) to by the X position, when the side of horizontal flap (5) acts on the inclined-plane of flange (6), rise to the bait (7) can be lifted and with following hook (9) jump out of mesh (Fig. 2), push layer door (12) to the right then, until flange (6) and horizontal flap (5) jump out of mesh (Fig. 3), rise to the bait (7) under the effect of self gravitation and the retracing spring of rising to the bait (4) with secondary under hook (10) engagement, layer door (12) and fixed thereon rising to the bait parts such as (7) are promoted to the right, rise to the bait (7) be subjected to stopping of hook under the secondary (10) and stop to move, take out triangular key, horizontal flap (5) is reset to the X position under the effect of self retracing spring, rotate with triangular key and to be located at the secondary energency-unlocking device (13) of layer Men Kaimen side or with pulling stay cord (1), the vertical flap (14) that is installed on the secondary energency-unlocking device (13) clockwise rotates around the axle center of fixed wheel (3) by the bull stick (2) that stay cord (1) drive is fixed on rise to the bait (7), rise to the bait (7) lift once more and with secondary under hook (10) jump out of mesh (Fig. 4), just can open elevator door fully.

Claims

1. elevator door door lock, when layer door closed, rise to the bait and following hook engagement, it is characterized in that: head trim, energency-unlocking device, a horizontal flap are linked in sequence, layer door, secondary energency-unlocking device, vertically flap, stay cord, bull stick, rise to the bait, flange is linked in sequence.

2. elevator door door lock according to claim 1 is characterized in that: secondary energency-unlocking device is located on the side of opening the door of layer door.

3. elevator door door lock according to claim 1 is characterized in that: one time the energency-unlocking device is located on the bottom surface of elevator door head trim.

4. elevator door door lock according to claim 1 is characterized in that: hook is fixed on down the back of hook along the level direction of opening the door under the secondary, arranges in the same way with following hook.