CN107720480B

CN107720480B - Retarding landing device

Info

Publication number: CN107720480B
Application number: CN201711094631.4A
Authority: CN
Inventors: 鲍广喜; 卢桂馥; 汪军; 刘涛; 修宇
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2023-09-01
Anticipated expiration: 2037-11-09
Also published as: CN107720480A

Abstract

The invention discloses a slow descent device which comprises a channel and a movable body moving up and down along the channel, wherein the channel comprises an upper-layer movable area and a lower-layer slow descent area, at least one buffer bag is hung on the inner wall of the slow descent area, and non-Newtonian fluid is filled in the buffer bag. The invention has the advantages that the invention can get rid of the influence and restriction of external force factors such as machinery, electric power and the like, and can achieve natural deceleration by utilizing the counteracting effect of the resistance generated by the non-Newtonian fluid in the slow-down channel on the gravity of the object. The method is suitable for occasions with high requirements on reliability and safety. The high-rise building emergency escape system can be used as a safety escape passage in the emergency escape process of the high-rise building, and has excellent performance and good social and economic benefits.

Description

Retarding landing device

Technical Field

The invention relates to the technical field of vertical descent control.

Background

In the technical field of vertical descent control, the existing scheme adopts a lot of vertical transportation equipment realized by electric power and mechanical facilities, such as a box elevator, a tower crane on a building engineering and the like. The operation of such devices mostly depends on motors, pulleys, steel ropes and the like, and if the motors, pulleys, steel ropes and the like are in a problem in the operation process, serious consequences can be caused, and people can be injured if the devices are damaged lightly and seriously.

Disclosure of Invention

The invention aims to solve the technical problem of realizing the difficult problem of poor speed control of an object in the falling process under the action of gravity, and can ensure the realization of safe and reliable slow falling without additional electric equipment, mechanical ropes and other equipment according to the natural characteristics of non-Newtonian fluid.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the slow descent device comprises a channel and a movable body moving up and down along the channel, wherein the channel comprises an upper-layer movable area and a lower-layer slow descent area, at least one buffer bag is hung on the inner wall of the slow descent area, and the buffer bag is filled with non-Newtonian fluid.

The slow landing device is formed by connecting at least two channels in the vertical direction.

The bottom of one channel at the topmost layer of the retarding descent device is provided with a buffer pool, a buffer sand pit or a buffer soft cushion.

The bottom of the movable body is fixed with a deceleration cone, and the deceleration cone is of a cone structure which gradually becomes smaller downwards.

Each buffer bag is a sealed bag with elasticity, and the inside of each buffer bag is filled with 35-85% of non-Newtonian fluid.

Each buffer bag in the channel is provided with 3-8 buffer bags, each buffer bag is provided with a hanging plate, each hanging plate is provided with a hook, and each buffer bag is hung at the same height position of the descent control region through the hook.

An elevator comprising a retarded landing gear according to claims 1-6, said passage being an elevator hoistway and said movable body being an elevator car.

The elevator is characterized in that a liquid level sensor for collecting the leakage condition of the non-Newtonian fluid is arranged at the bottom of the elevator shaft, signals are output to a controller of the elevator by the liquid level sensor, and alarm signals are output to an alarm unit by the controller according to the signals of the liquid level sensor.

The invention has the advantages that the invention can get rid of the influence and restriction of external force factors such as machinery, electric power and the like, and can achieve natural deceleration by utilizing the counteracting effect of the resistance generated by the non-Newtonian fluid in the slow-down channel on the gravity of the object. The method is suitable for occasions with high requirements on reliability and safety. The high-rise building emergency escape system can be used as a safety escape passage in the emergency escape process of the high-rise building, and has excellent performance and good social and economic benefits.

Drawings

The contents of each drawing in the specification of the present invention are briefly described as follows:

FIG. 1 is a schematic diagram of a slow landing device;

FIG. 2 is a schematic view of the channel structure in FIG. 1;

FIG. 3 is a schematic view of the movable body in FIG. 1;

FIG. 4 is a schematic view of the buffer bag of FIG. 1;

the labels in the above figures are: 1. a channel; 2. an active area; 3. a slow descent area; 4. a movable body; 5. a deceleration cone; 6. a buffer bag; 7. a non-newtonian fluid; 8. a hook.

Detailed Description

The channel 1 is a cylindrical slow descending pipeline, and the slow descending device is formed by connecting at least two channels 1 in the vertical direction, namely, the channels 1 are assembled in series in multiple sections, and each channel 1 is designed to be the maximum passing diameter of the pipeline according to requirements, as shown in figure 2.

The channel 1 comprises an upper movable area 2 and a lower descent control area 3, wherein at least one buffer bag 6 is hung on the inner wall of the descent control area 3, and each buffer bag 6 is filled with 35-85% of non-Newtonian fluid 7 and sealed. The bag has certain elasticity, friction resistance, extrusion resistance, difficult deformation and strong plastic return force. The non-Newtonian fluid 7 bags are firmly arranged on the inner wall of the channel 1, 3-8 buffer bags 6 in each channel 1 are arranged, a hanging plate is arranged on each buffer bag 6, a hanging hook 8 is arranged on the hanging plate, and each buffer bag 6 is hung at the same height position of the descent control region 3 through the hanging hook 8, and the structure is shown in figure 4.

The movable body 4 can move along the channel 1, the bottom of the movable body 4 is fixed with a deceleration cone 5, the deceleration cone 5 is of a cone structure which is gradually reduced downwards and is used for contacting the buffer bag 6, the running speed of the movable body 4 is low due to normal running, the buffer bag 6 can deform, the movable body 4 can pass through the buffer area of the channel 1 under the action of small resistance, when the movable body is out of control, the buffer bag 6 generates a certain supporting force for the movable body 4, and the buffer area of each channel 1 can ensure the safety of the movable body 4 in the out of control state to a great extent. In addition, a buffer pool, a buffer sand pit or a buffer soft cushion can be arranged at the bottom of one channel 1 at the topmost layer of the retarded descent device, so that the safety is further improved.

The buffer device can be applied to the fields of a safe escape landing channel 1 of a building, low-cost vertical safe transportation and the like. If used as an elevator, the hoistway 1 is an elevator hoistway and the movable body 4 is an elevator car. Each section of channel 1 is provided with a safety entrance and exit at the height of each floor, which is convenient for people or things to enter.

In the vertical falling process of the object, if no other external force acts, the object does acceleration motion by using the gravity acceleration g, the vertical falling speed is high, and the falling process is difficult to control. The invention seals the bag in the pipeline through reasonably arranging the non-Newtonian fluid 7 when the object vertically descends, so that the object is not only under the action of gravity in the vertical descending process, but also under the resistance given by the non-Newtonian fluid 7 on the pipeline wall. The larger the landing speed, the larger the resistance, and the smaller the landing speed, the smaller the resistance. Due to the resistance effect given by the non-Newtonian fluid 7, the falling speed is ensured to be smaller in a controllable range during the falling process of the object, and the object is not limited by a motor, a pulley, a rope and the like.

While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied directly to other applications without modification, as long as various insubstantial modifications of the method concept and technical solution of the invention are adopted, all within the scope of the invention.

Claims

1. The utility model provides a slow speed descending device, includes the passageway to and along the movable body of passageway up-and-down motion, its characterized in that: the channel comprises an upper-layer movable area and a lower-layer descent control area, wherein at least one buffer bag is hung on the inner wall of the descent control area, and the buffer bag is filled with non-Newtonian fluid;

a deceleration cone is fixed at the bottom of the movable body, and the deceleration cone is of a cone structure which gradually becomes smaller downwards;

the slow landing device is formed by connecting at least two channels in the vertical direction;

each buffer bag is a sealed bag with elasticity, and 35% -85% of non-Newtonian fluid is filled in the buffer bag.

2. The slow down landing device as claimed in claim 1, wherein: the bottom of one channel at the topmost layer of the retarding descent device is provided with a buffer pool, a buffer sand pit or a buffer soft cushion.

3. The slow down landing device as claimed in claim 2, wherein: each buffer bag in the channel is provided with 3-8 buffer bags, each buffer bag is provided with a hanging plate, each hanging plate is provided with a hook, and each buffer bag is hung at the same height position of the descent control region through the hook.

4. An elevator, characterized in that: a slow down landing gear as claimed in any one of claims 1 to 3, wherein the passageway is an elevator shaft and the movable body is an elevator car.

5. Elevator according to claim 4, characterized in that: the elevator is characterized in that a liquid level sensor for collecting the leakage condition of the non-Newtonian fluid is arranged at the bottom of the elevator shaft, signals are output to a controller of the elevator by the liquid level sensor, and alarm signals are output to an alarm unit by the controller according to the signals of the liquid level sensor.