RU94964U1 - LOCK CABIN DOOR LIFT DEVICE - Google Patents

Abstract

 1. The locking device of the door of the elevator car, made in the form of a hinge mounted on the beam of the drive door of the cab with a hook fixed to it with a permanent magnet and brackets fixed to it by a permanent magnet and mounted on the beam of the doors of the elevator shaft. ! 2. The locking device of the door of the elevator car according to claim 1, characterized in that the permanent magnets mounted on the hook and the bracket are directed to each other by the same poles. ! 3. The locking device of the door of the elevator car according to claim 1, characterized in that the teeth of the hook in the interfloor position of the elevator enter the grooves made in the carriages carrying the doors of the elevator car doors.

Description

The utility model relates to elevator technology, namely, to elevator safety devices, since the rules of elevator device and safety require that the doors of the cabin be locked along the entire path of the elevator, except for opening areas on floor areas.

Known lock, which contains a permanent magnet installed with the possibility of interaction with the reciprocal ferromagnetic part, made in the form of an electromagnet, the magnetic flux of which interacts with the flux of a permanent magnet. To facilitate the opening of the lock, the flow of the electromagnet is directed towards the flow of the permanent magnet. To improve ease of use when closing, the magnetic flux of the electromagnet coincides with the magnetic flux of a permanent magnet. In addition, the winding of the electromagnet is included in the electric circuit with the possibility of disconnecting it after opening or closing the lock (RF Patent for the invention No.2019661).

A disadvantage of the known lock is the use of an electromagnet as a magnet on one of the wings, for example, a door, which requires an electric control circuit for the lock and, in case of power failure of the elevator, the lock will be inoperative.

There is also known a door locking system for a freight or passenger elevator or a lifting device moving between vertically spaced stairwells with access to an elevator having a cab with vertical movement, and the staircases and each cab are protected by interlocked horizontal sliding doors, each containing a mechanical locking device that prevents the entry of a staircase door if the cabin is not compatible puppy with a staircase, a door lock on the cabin to normally prevent the cabin door from opening when the cabin is not aligned with any staircase, and a locking device is installed with the ability to mechanically unlock the cabin lock to unlock the cabin door for opening when the cabin is combined with the staircase (Application of the Russian Federation for invention No. 2007120630). In this system, the cabin door lock responds to the door opening force exerted by a mechanical drive to unlock the cabin door, and the locking device is responsive to vertical movement of the cabin. The cab door lock includes a rotatable supported actuated and rotatable locking elements for mechanical actuation to release the lock of the cab door lock.

The locking system according to the application No. 2007120630 is the closest to the claimed utility model and is selected as a prototype.

The disadvantage of the prototype is the presence of a mechanical drive of the locking element to remove the lock of the lock of the elevator car, which complicates the design of the lock of the car, and, therefore, reduces its reliability and safety of the elevator.

The technical result of the claimed utility model is to simplify the design of the locking device and, as a result, reduce the cost of manufacturing and installation, as well as increase the reliability and safety of the elevator.

The specified technical result is achieved by the fact that the locking device is made in the form of a hook with a permanent magnet fixed on it and pivotally mounted on the beam of the door drive of the cabin and the bracket with a permanent magnet fixed on it and mounted on the beam of the doors of the elevator shaft. Permanent hook magnets and staples are directed towards each other by poles of the same name. The teeth of the free-hanging hook enter the grooves made in the carriages carrying the doors of the cab doors and prevent them from opening.

Figure 1 presents a schematic side view of the proposed locking device, figure 2 is a top view thereof.

The locking device of the door of the elevator car contains a hook 1 freely hanging on a hinge 2 mounted on the beam of the door drive of the cab (not shown). A permanent magnet 3 is fixed on the hook 1. The hook 1 has teeth 4, which in the interfloor space of the elevator car enter grooves 5 made in carriages 6, which carry the doors of the car door. The bracket 7 with a permanent magnet 8 fixed to it is mounted on the beam of the doors of the elevator shaft. Permanent magnets 3 and 8 face each other with the same poles.

Figure 1 shows two positions of the carriages of the door drive with respect to the bracket 7 mounted on the door beam of the elevator shaft. The top image corresponds to the position of the elevator car between the stairwells. The bottom image corresponds to the position of the elevator car when it is combined with the landing.

The locking device operates as follows.

When the elevator car moves between the stairwells, the hook 1 hangs freely on a hinge 2 mounted on the cab door drive beam, while the teeth 4 of the hook 1 enter grooves 5 made in carriages 6 that carry the doors of the cab doors, preventing the wings from moving apart. When combining the elevator car with the landing, the hook 1 with the permanent magnet 3 enters the magnetic field of the magnet 8, fixed through the bracket 7 on the beam of the doors of the elevator shaft. Since the permanent magnets 3 and 8 are facing each other with the same poles, the hook 1 is repelled and the teeth 4 exit from the grooves 5 in the carriages 6. Thus, nothing prevents the door opening, which is carried out by a regular lift drive. After closing the doors and the beginning of the movement of the elevator car, the magnet 3 of the hook 1 leaves the magnetic field 8 of the magnet 8, the hook 1 enters the teeth 4 into the grooves 5 and prevents the doors from opening.

Prototypes of the proposed locking device of the elevator car door are made by the applicant and are being tested.

Claims (3)

1. The locking device of the door of the elevator car, made in the form of a hinge mounted on the beam of the drive door of the cab with a hook fixed to it by a permanent magnet and brackets fixed to it by a permanent magnet and mounted on the beam of the doors of the elevator shaft. 2. The locking device of the door of the elevator car according to claim 1, characterized in that the permanent magnets mounted on the hook and the bracket are directed to each other by the same poles. 3. The locking device of the door of the elevator car according to claim 1, characterized in that the teeth of the hook in the interfloor position of the elevator enter the grooves made in the carriages carrying the doors of the elevator car doors.