CN219431622U - Emergency evacuation door movable leaf flat-open sinking prevention device - Google Patents

Abstract

The utility model provides an emergency evacuation door movable fan flat-open sinking prevention device which comprises a lower shaft, wherein the lower part of the lower shaft is connected with a lower supporting piece, a lower shaft sleeve is sleeved outside the lower shaft, a lower supporting bulge is arranged below one side of the lower shaft sleeve, and a guide wheel positioning spring is arranged at the part of the lower shaft sleeve corresponding to the length of the lower supporting bulge. When the movable fan is opened by the flat-open, the lower shaft sleeve can rotate clockwise along with the movable fan, so that the upper supporting bulge is contacted with the lower supporting piece and positioned, meanwhile, the guide wheel positioning spring is out of action and cannot be compressed, so that the position of the whole supporting device is fixed.

Description

Emergency evacuation door movable leaf flat-open sinking prevention device

Technical Field

The utility model relates to the technical field of movable fans, in particular to a device for preventing a movable fan of an emergency evacuation door from sinking in a flat-open manner.

Background

The emergency evacuation automatic door is an automatic sliding door, and an emergency evacuation function is added on the basis of a common automatic sliding door, namely, the movable fan and the automatic fan can be opened horizontally by 90 degrees under any condition. After the automatic sliding door products appear in nineties of the twentieth century, various manufacturers in the world continuously enrich and improve the functions of the automatic sliding door products, so that the products with various functions such as arc-shaped automatic sliding doors, telescopic automatic sliding doors and the like appear, and the appearance of the emergency evacuation automatic door can be regarded as a historical innovation of the automatic sliding door.

First, the pass width is increased. The basic composition of the common automatic sliding door is two fixed fans at two sides, the middle two movable fans are only provided with the passing width which is equal to that of the middle two movable fans, and the fixed fans and the movable fans of the emergency evacuation automatic door can be horizontally opened at 90 degrees, so that the passing width is approximately twice that of the common automatic sliding door.

Second, security. When accidents such as fire disaster occur in a closed place, people are subconscious to run towards the direction of an entrance, under the condition of power failure, the common automatic sliding door cannot work, and the emergency evacuation automatic door can be opened when being pushed to a door leaf in the panic of people, so that casualties are reduced.

Therefore, the functional product of the emergency evacuation automatic door is more suitable for being installed in places with dense personnel, such as airports, stations, markets, supermarkets and the like.

However, in the prior art, the two middle movable fans have the defects of difficult pushing and infinite stop function after pushing. Under the emergency evacuation condition, the phenomenon that the movable fan swings after being pushed open easily occurs, and the personal safety is endangered.

The prior art has the following defects:

1. when emergency happens, the door leaf is only bent by the movable leaf on Zhou Shouli in the process that the movable leaf is opened by flat-open, and then the upper shaft can be bent, so that the door leaf sinks to rub the ground to cause difficulty in flat-open.

2. When the movable fan is opened in a flat-open mode under an emergency, the lower portion of the door leaf is free of limit and support along the ground rail direction, after the upper shaft of the door leaf is deformed and bent, the rotating shaft of the lower portion of the door leaf is displaced, and when the displacement exceeds the limit of the upper shaft, the upper shaft is permanently deformed, so that the problem of difficult opening and closing is caused.

Disclosure of Invention

In view of the above, the utility model aims to solve the problem that the movable fan sinks after the movable fan is opened horizontally by using a flat-open supporting structure at the lower part of the movable fan, and provides a device for preventing the movable fan from sinking horizontally for an emergency evacuation door.

The utility model provides an emergency evacuation door prevents movable fan flat-open sinking device, includes the lower axle, the below of lower axle is connected in lower support piece, the lower axle overcoat is equipped with lower axle sleeve, one side below of lower axle sleeve is equipped with down the support arch, lower axle sleeve corresponds the bellied length part of lower support and is equipped with leading wheel positioning spring.

Further, the below of lower support piece is connected in lower supporting wheel mounting bracket, one side of lower supporting wheel mounting bracket is equipped with the supporting wheel, and another side is equipped with the leading wheel.

Further, the side wall of the lower shaft sleeve is provided with a screw hole for fixing the movable fan through a screw.

Further, two ends of the lower part of the lower supporting piece are connected with limiting arms, the limiting arms are embedded into the ground rail, and the guide wheel is arranged between the two limiting arms.

By adopting the technical scheme, the method has the following beneficial effects:

when the movable fan is opened by the flat-open type, the lower shaft sleeve can rotate clockwise along with the movable fan, and then the upper supporting bulge is in contact with the lower supporting piece and is positioned, meanwhile, the guide wheel positioning spring is inactive and cannot be compressed, the position of the whole supporting device is fixed, the whole supporting device can only move in a rotating mode, the upper portion and the lower portion cannot move any more, and the supporting wheel is in contact with the ground rail, so that the sinking force of the door leaf can be counteracted through the supporting force of the supporting wheel, and the sinking of the door leaf is limited. The supporting wheel, the supporting wheel mounting bracket and the ground rail generate moment, so that the movable fan is effectively supported to sink, the upper periphery of the movable fan cannot be deformed, the friction resistance between the door leaf and the ground, which is caused by the flat-open opening of the movable fan under the emergency escape condition, is reduced, the upper shaft of the movable fan is protected, the permanent deformation is avoided, and the service life is prolonged.

Drawings

FIG. 1 is a schematic diagram of the front structure of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model 1;

FIG. 3 is a schematic perspective view of FIG. 2 of the present utility model;

FIG. 4 is a schematic view of the structure of the mounted movable fan of the present utility model;

FIG. 5 is a schematic view of the structure of FIG. 4 after the movable fan frame is removed;

in the figure: 1-lower shaft; 2-lower shaft sleeve; 3-a guide wheel positioning spring; 4-upper support protrusions; 5-a lower support; 6, a guide wheel; 7-supporting wheels; 8-supporting wheel mounting frame; 9-ground rails; 10-limiting arms; 11-a movable fan lower frame; 12-movable fan vertical frame.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example 1: the device for preventing the movable fan of the emergency evacuation door from sinking in the flat-open mode comprises a lower shaft 1, wherein the lower part of the lower shaft 1 is connected with a lower supporting piece 5, a lower shaft sleeve 2 is sleeved outside the lower shaft 1, a lower supporting bulge is arranged below one side of the lower shaft sleeve 2, and a guide wheel positioning spring 3 is arranged on the length part of the lower shaft sleeve 2 corresponding to the lower supporting bulge.

The below of lower bolster 5 is connected in lower supporting wheel mounting bracket 8, one side of lower supporting wheel mounting bracket 8 is equipped with supporting wheel 7, and the other side is equipped with leading wheel 6. The side wall of the lower shaft sleeve 2 is provided with a screw hole for fixing the movable fan through a screw. The two ends below the lower support piece 5 are connected with limiting arms 10, the limiting arms 10 are embedded into the ground rail 9, and the guide wheel 6 is arranged between the two limiting arms 10.

The bottom of the movable fan in fig. 4 is provided with a movable fan lower frame 11, the side face is provided with a movable fan vertical frame 12, and the lower shaft 1 is arranged below the movable fan vertical frame 12 and is fixed by screws.

The working principle of the utility model is as follows: when the movable fan is opened by the flat-open, the lower shaft sleeve 2 can rotate clockwise along with the movable fan, the upper supporting bulge 4 is in contact with the lower supporting piece 5 and is positioned, meanwhile, the guide wheel positioning spring 3 is out of action and cannot be compressed, the position of the whole supporting device is fixed, the whole supporting device can only move rotationally and cannot move up and down, when the movable fan is opened by the flat-open, the upper shaft can bend, the door leaf has a sinking trend, at the moment, the force of sinking the door leaf can be counteracted by the supporting force of the supporting wheel 7 due to the fact that the supporting wheel 7 is in contact with the ground rail, the door leaf is further limited to sink, when the door leaf is not opened in an automatic translation state, the upper supporting bulge 4 and the lower supporting piece 5 are not in contact, at the moment, the lower supporting piece 5 can move upwards along the lower shaft 1, the guide wheel 6 is always in contact with the ground rail 9 due to the action of the guide wheel positioning spring 3, the weight of the door leaf is not supported, the door leaf is limited only by the spring force of the guide wheel positioning spring 3, and the depth of the guide arm 10 extending into the ground rail is kept unchanged all the time.

Install the support device simple structure's activity fan immediately frame 12 down ingenious with the door leaf open carry out strutting arrangement's trigger, produce moment through supporting wheel 7 and supporting wheel 7 installing support and ground rail, effectually support the activity fan subsidence for the activity fan upper periphery can not produce the deformation, and then reduces the activity fan flat-open under the emergency and opens the door leaf and ground frictional resistance that receives, also can protect activity fan upper shaft simultaneously, does not take place permanent deformation, increase of service life.

While the basic principles and main features of the present utility model have been described above, it will be understood by those skilled in the art that the present utility model is not limited by the above-described embodiments, which are described in the foregoing description merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an emergency evacuation door prevents movable fan flat-open sinking device, its characterized in that includes the lower axle, the below of lower axle is connected in lower support piece, lower axle overcoat is equipped with down the axle sleeve, one side below of lower axle sleeve is equipped with down the support arch, the lower axle sleeve corresponds the bellied length part of lower support and is equipped with leading wheel positioning spring.

2. The device for preventing the movable sash from being unfolded and sinking in emergency evacuation door as claimed in claim 1, wherein the lower part of the lower supporting piece is connected to a lower supporting wheel mounting frame, one side of the lower supporting wheel mounting frame is provided with a supporting wheel, and the other side of the lower supporting wheel mounting frame is provided with a guiding wheel.

3. The device for preventing the movable sash from being opened and sunk horizontally for the emergency evacuation door according to claim 1, wherein the side wall of the lower shaft sleeve is provided with a screw hole for fixing the movable sash by a screw.

4. An emergency evacuation door movable leaf flat-open sinking prevention device according to claim 1 or 2, wherein two ends below the lower support member are connected with limiting arms, the limiting arms are embedded into the ground rail, and the guide wheel is arranged between the two limiting arms.