CN110159146B

CN110159146B - Method for opening escape door of landscape ladder

Info

Publication number: CN110159146B
Application number: CN201910399771.5A
Authority: CN
Inventors: 张文学; 李志杰; 吴淑康; 尹小溪; 张�成; 计均
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2021-01-05
Anticipated expiration: 2039-05-14
Also published as: CN110159146A

Abstract

The invention relates to a method for opening a horizontal escape door of an underground landscape ladder. The device comprises a first door plate, a second door plate, a lower base, a first rotating shaft, a second rotating shaft, a roller, a chain, a fixed pulley, a heavy object, a hinged support rod, a clamping groove, a slideway, a longitudinal beam, a cross beam, a panel and a pin. When emergency happens, people pull the chain at the position of the weight by removing the pin which is positioned at the upper end of the weight and used for limiting the movement of the weight in the underground space, the hinged support rod generates vertical upward force to the first door plate and the second door plate under the action of the chain, the roller rolls in the slide way under the traction force of the chain, the first door plate rotates around the second rotating shaft, and the second door plate rotates and is folded around the first rotating shaft. When the roller reaches the position of the clamping groove, the roller falls into the clamping groove of the lower base, and people who are fixed by opening the door can quickly, effectively and safely evacuate. The opening method is manually opened, and is simple, reliable, safe and effective.

Description

Method for opening escape door of landscape ladder

Technical Field

The invention relates to an underground landscape ladder escape door opening method, and belongs to the field of escape doors.

Background

With the rapid development of economy and society, large-scale and comprehensive urban underground space is continuously developed and constructed, and the space in underground commercial buildings is special in structure, dense in personnel, high in fire hazard and high in rescue difficulty, so that the fire-fighting evacuation safety is particularly important. At present, most escape doors in our country are vertical doors installed on the ground, the form of the escape doors is a vertical hinged door opened on two sides, however, from the aspects of economy and safety, the doors are locked under the general condition, great potential safety hazards exist, and the existing double-leaf doors are found in use.

In view of this, a horizontal landscape escape door that arranges more nimble comes into force, and it can arrange in the pavement or the bicycle way around the building, can regard as road surface when closed, can bear crowd's load, also can bear partial vehicle load when necessary. After the door is opened, people in the underground space can directly access the ground, the opening space is larger than that of a common door, and the evacuation capacity can be effectively improved.

Disclosure of Invention

The invention aims to provide a simple, safe, timely and effective opening method for a horizontal escape door. Because the landscape ladder escape door can be arranged on a sidewalk and a traffic lane, the door has a larger weight in order to meet the requirements of strength and rigidity, and the traditional opening device utilizing the pneumatic rod has the following defects: in case of fire, the power system may be damaged so that the door is not opened in time; the door is heavy and has high requirements on the pneumatic rod; to ensure sufficient safety space, the longer doors are at risk of being lifted.

The technical scheme of the invention is as follows:

a method for opening a horizontal escape door comprises a first door panel 1, a second door panel 2, a lower base 3, a first rotating shaft 4, a second rotating shaft 10, a roller 5, a chain 6, a fixed pulley 7, a heavy object 8, a hinged support rod 9, a clamping groove 11, a slideway 12, a longitudinal beam 13, a cross beam 14, a panel 15 and a pin 16. The upper end of the heavy object 8 is provided with a pin 16, and the lower bottom plate 3 is provided with a clamping groove; the upper end of a heavy object 8 is connected with a beam 14 of a second door panel 2 close to the edge of a stair opening through a chain 6 and a fixed pulley 7 and a hinged support rod 9, a first rotating shaft 4 is welded on the lower side of the adjacent position of the first door panel 1 and the second door panel 2 (both the first door panel 1 and the second door panel 2 are composed of a panel 15, the beam 14 and a longitudinal beam 13 which play a role of a support framework, and the hinged support rod 9 can be regarded as an integral door panel in the technology), one end of the hinged support rod 9 is hinged at the welding position of the first door panel 1 and the first rotating shaft 4, and the other end of the hinged support rod is hinged at the welding. When the escape door is not opened, the escape door can bear the load of people and vehicles, and in order to enable the door plate to be evenly stressed, the lower base 3 shaped like a Chinese character 'hui' longitudinally reserves a slideway 12 for the roller 5 to roll and an oval groove for placing the first rotating shaft 4. When a fire disaster happens, a person pulls the chain 6 at the position of the weight 8 by removing the pin 16 which is positioned at the upper end of the weight 8 and used for limiting the movement of the weight 8 in the underground space, the hinged support rod 9 generates vertical upward force to the first door panel 1 and the second door panel 2 under the action of the chain 6, meanwhile, the roller 5 rolls in the slideway 12 under the traction force of the chain 6, the first door panel 1 rotates around the second rotating shaft 10, and the second door panel 2 rotates and folds around the first rotating shaft 4. When the roller 5 reaches the position of the clamping groove 11, the roller falls into the clamping groove 11 of the lower bottom plate 3, and people who are fixed and open the door can evacuate quickly, effectively and safely.

The invention has the positive effects that:

1. the escape door opening mode provided by the invention has the advantages of reasonable device design, convenience in manufacturing, and timely, safe and effective opening.

2. The door panel opening device is manually opened, is simple and reliable, can meet the minimum opening force of door panels in different forms by adjusting the length of the supporting rod and the weight of heavy materials, and proposes that the starting force is not more than 50kg, so that people can save more labor in the opening process.

3. The invention can determine the position of the clamping groove according to the height of the underground escape space, and the position of the clamping groove is required to meet the escape height (recommended to be 2m) for fast and safe evacuation of people.

Drawings

FIG. 1 is a vertical layout view of an escape door opening method

FIG. 2 is a sectional view of an escape door opening method

FIG. 3 is a technical vertical layout view of the opened escape door

FIG. 4 is a detailed view of the first rotating shaft 4 of the opening device of the escape door

FIG. 5 is a detailed structural view of the roller 5 in the method for opening the escape door

Detailed Description

The structure is described in further detail below with reference to the accompanying drawings and the detailed description.

A method for opening a horizontal escape door comprises a first door panel 1, a second door panel 2, a lower base 3, a first rotating shaft 4, a second rotating shaft 10, a roller 5, a chain 6, a fixed pulley 7, a heavy object 8, a hinged support rod 9, a clamping groove 11, a slide rail 12, a longitudinal beam 13, a cross beam 14, a panel 15 and a pin 16. As shown in the drawings, the first door panels 1 and 2 (both composed of a panel 15, a cross beam 14 and a longitudinal beam 13 which function as a supporting framework, and in this technology, they can be regarded as a single door panel) are respectively welded to the first rotating shafts 4 at the lower sides thereof and are both located at the upper side of the lower base 3 in the shape of a Chinese character 'hui', and the specific structure of the first rotating shaft 4 is shown in fig. 4. One end of a hinged support rod 9 (the length and the mass of the weight 8 can be selected according to the minimum pulling force for lifting the door panel) is hinged at the welding position of the first door panel 1 and the first rotating shaft 4, and the other end of the hinged support rod is hinged at the welding position of the second door panel 2 and the first rotating shaft 4 and can rotate along with the lifting of the opening door. The roller 5 is located below the edge of the second door panel 2 close to the stair opening, and the specific shape of the position is shown in the attached drawing 5 in order to avoid that the second door panel 2 is contacted with the lower base 3 in the lifting and rotating process to prevent the second door panel 2 from rotating and folding. The fixed pulley 7 is fixed on the side surface of the lower base 3 through a bolt and is adjacent to the second rotating shaft 10. One end of the chain 6 is connected with a cross beam 14 at the edge of the second door panel 2 close to the stair opening, then the cross beam sequentially bypasses a supporting rod 9 and a fixed pulley 7 to be connected with a weight 8, the weight 8 is arranged below the fixed pulley, and the length of the chain 6 and the height of the weight 8 are determined according to the underground escape space and the best force application position of people. To prevent the weight from falling down as a result of the child playing, the upper end of the weight 8 is restrained by a pin 16. When a fire disaster happens, people firstly remove the limiting pin 16 at the upper end of the weight 8 in the underground passage, then pull the chain 6 at the position of the weight 8 by hand, so that the hinged support rod 9 is acted by the chain 6 to generate vertical upward force on the first door panel 1 and the second door panel 2, meanwhile, the roller 5 is rolled in the slideway 12 by the traction force of the chain 6, the first door panel 1 rotates around the second rotating shaft 10, and the second door panel 2 rotates and folds around the first rotating shaft 4. When the roller 5 reaches the position of the clamping groove 11, the roller falls into the clamping groove 11 of the lower bottom plate 3, and people who are fixed and open the door can evacuate quickly, effectively and safely.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention should not be considered as limited in any way, and any modifications, equivalent variations and modifications made within the spirit and principle of the present invention without departing from the technical spirit of the present invention should be regarded as included in the technical scope of the present invention.

Claims

1. The method for opening the escape door of the landscape ladder is characterized in that: the landscape ladder escape door consists of a first door plate, a second door plate, a lower base, a first rotating shaft, a second rotating shaft, a roller, a chain, a fixed pulley, a heavy object, a hinged support rod, a clamping groove, a slideway, a longitudinal beam, a cross beam, a panel and a pin; the upper end of the heavy object is provided with a pin, and the lower bottom plate is provided with a clamping groove; the upper end of the weight is connected with a beam of the second door panel close to the edge of the stair opening by a chain bypassing the fixed pulley and the hinged support rod, and the first rotating shaft is welded at the lower side of the adjacent part of the first door panel and the second door panel; the first door plate and the second door plate are both composed of a panel, a cross beam and a longitudinal beam which play a role in supporting the framework; one end of the hinged support rod is hinged at the welding position of the first door plate and the first rotating shaft, and the other end of the hinged support rod is hinged at the welding position of the second door plate and the first rotating shaft and can rotate along with the rising of the opening door; the lower base is provided with a slideway for rolling the roller and a groove for placing the first rotating shaft along the longitudinal direction.

2. The method for opening a landscape ladder escape door according to claim 1, wherein: when a fire disaster happens, pins for limiting heavy objects to move and located at the upper ends of the heavy objects are firstly removed, then chains at the heavy objects are pulled by hands, the hinged support rods generate vertical upward force on the first door panel and the second door panel under the action of the chains, meanwhile, the rollers roll in the slide ways under the traction force of the chains, the first door panel rotates around the second rotating shaft, and the second door panel rotates and folds around the first rotating shaft; when the roller reaches the position of the slot, the roller falls into the slot of the lower bottom plate, and people who open the door can safely evacuate.