CN103318737A

CN103318737A - Novel door locking device of elevator landing door

Info

Publication number: CN103318737A
Application number: CN2013102812269A
Authority: CN
Inventors: 屈华慧; 乐荣延
Original assignee: NINGBO OULING ELEVATOR COMPONENTS CO Ltd
Current assignee: NINGBO OULING ELEVATOR COMPONENTS CO Ltd
Priority date: 2013-07-05
Filing date: 2013-07-05
Publication date: 2013-09-25

Abstract

The invention discloses an elevator door locking device, and particularly relates to a novel door locking device of an elevator landing door. The novel door locking device comprises a lock box, a lock hook base plate, a lock hook and a lock bolt. The lock bolt is fixed at the lower end of the lock box, lock hooks are hinged to the lock hook base plate through a hinge shaft, and mutually clamped with the lock bolt; a lower roller is further sleeved on the hinge shaft; the lock hook is provided with an extending section hinged to an upper roller; an antitheft hook is detachably fixed on the lock hook and faces the same direction with the same, and a hook pin is tightly clamped on the antitheft hook. By the arrangement, the technical shortcomings that no safety locking mechanisms are arranged between hanging plates of two doors in a landing door system with existing elevator door locks are overcome; in the elevator landing door system adopting the novel door locking device of the elevator landing door, even driving steel wire ropes between the hanging plates of the two doors are broken, a single layer door fixed on the hanging plate of a driven door cannot be pushed open by external force, so that usage safety performance of the whole elevator landing door system can be improved.

Description

The novel elevator inlay door locking device

Technical field

The present invention relates to a kind of elevator door locking device, particularly novel elevator inlay door locking device.

Background technology

Elevator inlay door locking device is installed in the layer door system of elevator, elevator door had locking effect, and by the opening and closing that is used in conjunction with to realize layer door of the retiring cam in the door opening machine for elevator and door lock, be a kind of important elevator safety parts simultaneously.

As the patent No. be 201020114670.3 openly disclose a kind of door lock of elevator in the Chinese utility model patent document, it comprises lock box, be located at contact and lower latch hook in the lock box, correspondingly with lower latch hook collude tight upper latch hook, be located at the bottom roller of the terminal side of latch hook, latch hook base plate with bottom roller one side center shaft Joint, upper roller center shaft one end fixes with the terminal vertical riser of upper latch hook upper end, the lower end of vertical riser can be rotated with bottom roller one side center shaft and be contacted, establish a torsion spring at the front end of latch hook base plate and the bottom roller center shaft between the upper latch hook end, the head end card of described torsion spring hangs over latch hook and vertical riser joint portion, and the end card of described torsion spring hangs on the latch hook base plate.

Above-mentioned door lock of elevator when mounted, lock box with lower latch hook in its structure is fixed on the layer door upper sill frame, latch hook base plate with upper latch hook is fixed on the active door link plate, shrink to move on the door lock by door cutter movable blades during the normal unlatching of layer door, bottom roller, latch hook is lifted, upper latch hook is deviate from lower latch hook opens layer door, if layer door is improper unlatching, for example the external force hand is taken off layer door, at this moment do not move owing to retiring cam, all the time be the locking shape between therefore upper latch hook and the lower latch hook, effectively avoid layer door to be opened by external force, but above-mentioned door lock of elevator still has obvious not enough point, after in the layer door system of elevator above-mentioned door lock of elevator being installed, not have any safety locking mechanism between two door straps in the layer door system, that is to say that elevator landing door system uses or the generation artificial destruction long-time, after shackle line between two door straps breaks, the one-sided layer door that external force can easy to doly will be fixed on the driven door strap pushed aside, uses potential safety hazard so that whole elevator landing door system exists.

Summary of the invention

The objective of the invention is to provide in order to solve above-mentioned the deficiencies in the prior art a kind of can be with the novel elevator inlay door locking device of active door link plate and the locking of driven door strap.

To achieve these goals, the novel elevator inlay door locking device that the present invention is designed, comprise lock box, latch hook base plate, latch hook and locking bolt, wherein locking bolt is fixed on the lock box lower end, latch hook is hinged on the latch hook base plate by a jointed shaft, and mutually collude tightly with locking bolt, on above-mentioned jointed shaft, also be socketed with bottom roller, described latch hook is provided with the extension, be hinged with upper roller in this extension, go back detached type on the described latch hook and be fixed with the anti-hook of taking off, this is anti-take off hook and latch hook towards consistent, and prevent taking off hook at this and collude the hook bolt is tightly arranged.

The novel elevator inlay door locking device that the present invention obtains, be fixed with the anti-hook of taking off in its structure on the latch hook, prevent taking off also to collude on the hook that at this hook bolt is tightly arranged, when concrete the use, the latch hook base plate is fixed on the active door link plate of elevator landing door, the hook bolt is fixed on the driven door strap, when being in, closes down elevator door, the above-mentioned anti-hook of taking off colludes tightly on the hook bolt, when layer door normally opened, shrink to drive latch hook by the retiring cam blade and realize rotation, latch hook is lifted, the anti-hook of taking off was deviate from from the hook bolt when latch hook was deviate from locking bolt, layer door opened, therefore adopt in the elevator landing door system of novel elevator inlay door locking device provided by the present invention, after even the shackle line between two door straps breaks, external force also can't be pushed the one-sided layer door that is fixed on the driven door strap aside, promotes the usage safety performance of whole elevator landing door system.

Description of drawings

Fig. 1 is the structural representation of novel elevator inlay door locking device provided by the present invention;

Fig. 2 is the concrete mounting structure schematic diagram of novel elevator inlay door locking device provided by the present invention.

Among the figure: latch hook base plate 1, lock box 2, latch hook 3, extension 3-1, bottom roller 4, jointed shaft 5, upper roller 6, locking bolt 7, anti-hook 8, hook bolt 9, driven door strap 10, the active door link plate 11 taken off.

The specific embodiment

The present invention is further described below in conjunction with drawings and Examples.

Embodiment:

As shown in Figure 1, the novel elevator inlay door locking device that the present embodiment provides, comprise lock box 2, latch hook base plate 1, latch hook 3 and locking bolt 7, wherein locking bolt 7 is fixed on lock box 2 lower ends, latch hook 3 is hinged on the latch hook base plate 1 by a jointed shaft 5, and mutually collude tightly with locking bolt 7, on above-mentioned jointed shaft 5, also be socketed with bottom roller 4, described latch hook 3 is provided with extension 3-1,3-1 is hinged with upper roller 6 in this extension, go back detached type on the described latch hook 3 and be fixed with the anti-hook 8 of taking off, this is anti-take off hook 8 and latch hook 3 towards consistent, and link up with 8 and collude hook bolt 9 is tightly arranged this anti-taking off.

As shown in Figure 2, latch hook base plate 1 is fixed on the active door link plate 11 of elevator landing door in concrete the use, hook bolt 9 is fixed on the driven door strap 10, when being in, closes down elevator door, the above-mentioned anti-hook 8 of taking off colludes tightly on hook bolt 9, shrinks to drive latch hook 3 by the retiring cam blade and realize rotation when layer door normally opened, and latch hook 3 is lifted, the anti-hook 8 taken off was deviate from from hook bolt 9 when latch hook 3 was deviate from locking bolt 7, and layer door opened.

Claims

1. novel elevator inlay door locking device, comprise lock box (2), latch hook base plate (1), latch hook (3) and locking bolt (7), wherein locking bolt (7) is fixed on lock box (2) lower end, latch hook (3) is hinged on the latch hook base plate (1) by a jointed shaft (5), and mutually collude tightly with locking bolt (7), on above-mentioned jointed shaft (5), also be socketed with bottom roller (4), described latch hook (3) is provided with extension (3-1), be hinged with upper roller (6) at this extension (3-1), it is characterized in that: go back detached type on the described latch hook (3) and be fixed with the anti-hook (8) of taking off, should anti-take off hook (8) and latch hook (3) towards consistent, and prevent taking off hook (8) at this and collude hook bolt (9) is tightly arranged.