CN107128771B - Elevator falling buffering car utilizing shear energy absorption - Google Patents
Elevator falling buffering car utilizing shear energy absorption Download PDFInfo
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- CN107128771B CN107128771B CN201710335808.9A CN201710335808A CN107128771B CN 107128771 B CN107128771 B CN 107128771B CN 201710335808 A CN201710335808 A CN 201710335808A CN 107128771 B CN107128771 B CN 107128771B
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- shearing
- car
- plate
- elevator
- falling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/028—Active systems
- B66B11/0286—Active systems acting between car and supporting frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
A lift falling buffer lift car capable of absorbing energy by utilizing shearing comprises a lift car, wherein a four-corner frame at the joint of the lift car and a bearing frame or a plurality of rows of shearing units are arranged on the periphery of the four-corner frame; the elevator car further comprises a shearing plate, wherein the shearing plate is provided with a long round hole matched with the shearing unit in shape and position, the shearing plate is connected with the car through the long round hole formed by the shearing unit penetrating through the shearing plate, and the bottom of the shearing plate extends out of the car by a preset length, so that when the elevator car falls, the shearing plate is firstly connected with the ground of a pit to achieve the purpose of buffering; the length of the long round hole on the shearing plate is gradually increased along with the height, so that the shearing units are not completely sheared at one time in a falling process, but are sequentially sheared in a segmented mode to absorb falling energy step by step, and the requirements of protecting human body safety and not exceeding specified overload are met.
Description
Technical Field
The invention relates to the technical field of shear energy absorption and elevator falling buffering lifesaving, in particular to an elevator falling buffering car utilizing shear energy absorption.
Background
In recent decades, with the increase of the number of high-rise buildings in China, the number of high-rise elevators has also increased rapidly, and statistics shows that the number of elevators in China is about 490 thousands of elevators as a vertical transportation tool for high-rise buildings, so that the high-load, large-traffic and long-term use of the high-rise elevators are ubiquitous as the vertical transportation tool for high-rise buildings, and meanwhile, the number of old elevators has increased rapidly, and particularly, as time goes on, elevators which are newly increased in recent ten years will gradually enter old ranks and become the main target of old elevator transformation.
In recent years, accidents of high-rise elevators still happen in China. According to statistics of the quality control bureau of China, 48 elevator accidents occur all the year round in 2016, 41 people die from the accident, the number of accidents and the number of dead people are obviously reduced compared with 2015, the safe operation situation of the elevator is stable, but the safety problem of the elevator is related to the life safety of people and still varies.
The overspeed protection devices used in the present elevators are mainly speed limiters and safety tongs. The speed limiter is a device for speed reaction and operation of the safety gear, and when the running speed of the elevator car reaches a limit value (generally 115% of the rated speed of the elevator), the speed limiter can send out an electric signal and generate a mechanical action so as to cause the braking action of the safety gear. Although elevator safety regulations dictate that the safety gear must be operated by a speed limiter, the use of safety gear operated by electrical, hydraulic or pneumatic means is prohibited. However, the speed limiter is still controlled by an electric signal, and whether the speed limiter can normally act plays an important role in braking the safety tongs along with the use and the aging of the elevator.
When the elevator is squat due to insufficient traction force, control failure or brake failure, the buffer absorbs the kinetic energy of the elevator car and provides final protection to ensure the safety of personnel and the elevator structure. The existing buffers are divided into spring buffers and hydraulic buffers, wherein the spring buffers are energy storage buffers, and springs rebound after being compressed to limit positions to cause secondary damage to human bodies; the hydraulic buffer is an energy-consuming buffer, has no rebound effect after being impacted, but is greatly influenced by other factors such as temperature and the like, and needs to be maintained at regular time to ensure the normal use of the buffer.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an elevator falling buffer car utilizing shear energy absorption, which does not depend on any control device and completely absorbs energy when a pre-designed shear unit and a shear plate are subjected to shear deformation so as to realize the buffer of the elevator falling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a buffering lift car capable of absorbing energy by shearing for falling of an elevator comprises a lift car 3, wherein a plurality of rows of shearing units 1 are arranged at four corner frames or the periphery of the connection part of the lift car 3 and a bearing frame; the elevator car falling buffer device is characterized by further comprising a shear plate 2, wherein the shear plate 2 is provided with a long circular hole 4 matched with the shape and position of the shear unit 1, the shear plate 2 penetrates through the long circular hole 4 on the shear plate 1 to be connected with the car 3, and the bottom of the shear plate 2 extends out of the car 3 by a preset length, so that when the elevator car 3 falls, the shear plate 2 is firstly connected with the ground of a pit to achieve the purpose of buffering; the length of the long round hole 4 on the shear plate 2 is gradually increased along with the height, so that the shear unit 1 is not completely sheared at one time but is sequentially sheared in sections when falling, falling energy is absorbed step by step, the safety of a human body is protected, and the requirement that the specified overload is not exceeded is met.
The shape of the shear plate 2 is determined according to the actual size and shape of the car 3, is L-shaped, C-shaped or single plate, is placed at four corners of the square car when being L-shaped, and is connected with the frame structure.
The shearing unit 1 is a bolt or a pin.
The shearing unit 1, the shearing plate 2 and the shear energy absorption device formed by the oblong holes 4 are arranged on an outer frame of the elevator car 3 or arranged inside the elevator car 3; if the rigidity of the car frame structure is insufficient, the rigidity is increased, so that the car frame structure can be suitable for impact in falling, large deformation cannot occur, and the safe living space of passengers in the car is influenced.
Compared with the prior art, the invention has the following advantages:
the falling buffering lifesaving car can achieve the effect of absorbing impact kinetic energy of falling of the elevator through shearing deformation of the shearing unit 1 without depending on any electrified control equipment when the elevator falls, is low in manufacturing cost and simple in structure, and can be correspondingly designed and reformed according to the actual conditions of the shape, the size and the like of the elevator car. Meanwhile, due to the use of the shearing unit 1, the device can be repeatedly used after the shearing unit 1 is replaced, and the installation is simpler and more convenient.
Drawings
Fig. 1 is a first overall effect diagram of the elevator falling buffer car of the invention.
Fig. 2 is a second overall effect diagram of the elevator falling buffer car of the invention.
Fig. 3 is a schematic view of an L-shaped shear plate.
Fig. 4 is a schematic view of the car in connection with the shearing unit.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
first, the principle of the present invention is explained as follows: according to the invention, by utilizing the property of energy absorption of the shearing deformation of the structure, through designing the size parameters such as thickness and length of the shearing unit 1 and combining the material property parameters, when the elevator control equipment fails and the safety gear cannot brake to cause overspeed falling, the impact kinetic energy of the elevator falling is absorbed through the shearing deformation of the shearing unit 1. The shearing units 1 can be arranged in multiple rows and columns in a layered mode, and size parameters such as density degree, thickness and the like of the shearing units are correspondingly adjusted according to the actual height of the elevator and the size of the car. When the elevator falls, the shearing units 1 are sequentially sheared from bottom to top due to the existence of the long round holes, and meanwhile, the impact kinetic energy of the elevator when the elevator falls is gradually reduced, so that the elevator is prevented from being damaged to the human body when falling to the bottom of the pit at high speed.
As shown in fig. 1, 2 and 3, the elevator falling buffer car utilizing shear energy absorption of the invention comprises a car 3, wherein a plurality of rows of shear units 1 are arranged at four corner frames or the periphery of the joint of the car 3 and a bearing frame; the elevator car damping device is characterized by further comprising a shearing plate 2, wherein the shearing plate 2 is provided with a long circular hole 4 matched with the shape and position of the shearing unit 1, the shearing plate 2 penetrates through the long circular hole 4 on the shearing plate 1 to be connected with the car 3, and the bottom of the shearing plate 2 extends out of the car 3 by a preset length, so that when the elevator car 3 falls, the shearing plate 2 is firstly connected with the ground of a pit to achieve the aim of buffering; the length of the long round hole 4 on the shearing plate 2 is gradually increased along with the height, so that the shearing unit 1 is not completely sheared at one time when falling, but is sequentially sheared in a segmented manner, falling energy is gradually absorbed, the safety of a human body is protected, and the requirement of specified overload is not exceeded.
The shape of the shear plate 2 is determined according to the actual size and shape of the car 3, and is L-shaped, C-shaped or single plate, as shown in FIG. 4, the shear plate is arranged outside four corners of the square car when being L-shaped, and is connected with the frame structure.
As a preferred embodiment of the present invention, the shearing unit 1 is a bolt or a pin.
The shearing unit 1, the shearing plate 2 and the shear energy absorption device formed by the oblong holes 4 are arranged on an outer frame of the elevator car 3 or arranged inside the elevator car 3; if the rigidity of the car frame structure is insufficient, the rigidity is increased, so that the car frame structure can be suitable for impact in falling, large deformation cannot occur, and the safe living space of passengers in the car is influenced.
The first embodiment is as follows:
as shown in figure 1, the size of the used cage 3 is 1500mm 2000mm, the framework is a steel structure, the shearing unit 1 is designed into a bolt shape, the size is the same as that of a standard bolt, Q235 is selected, the material of the shearing plate 2 is 45# steel, the shearing plate 2 is L-shaped, the bottom of the shearing plate 2 exceeds 500mm of the bottom of the cage, and when the shearing plate 2 and the cage 3 are connected together through the shearing unit 1 in use. When the elevator is in a falling accident, after the elevator falling buffer lift car acts, whether the shear plate 2 and the long circular hole 4 deform greatly is checked, and if the shear plate and the long circular hole do not deform greatly, the elevator can be repeatedly used only by replacing the shear unit 1.
The second embodiment:
as shown in figure 1, the size of the used car 3 is 1500mm × 2000mm, the framework of the car is a steel structure, the cutting unit 1 is made of Q235 and designed into a pin shape, the material of the cutting plate 2 is made of 20# steel, the cutting plate 2 is made of an L shape, the bottom of the cutting plate exceeds 500mm of the bottom of the car, and in use, the cutting plate 2 and the car 3 are connected together through the cutting unit 1. When the elevator has a falling accident and the elevator falling buffer car acts, whether the shearing plate 2 and the long round hole 4 deform greatly or not is checked, and if the large deformation does not occur, the elevator can be repeatedly used only by replacing the shearing unit 1.
Example three:
as shown in fig. 2, the size of the car 3 is 1500mm 2000mm, the frame is made of a steel structure, the cutting unit 1 is made of Q235 and designed into a bolt shape, the material of the shear plate 2 is made of Q235, the shear plate 2 is made of a single plate, the bottom of the shear plate 2 exceeds the bottom of the car by 500mm, and when the cutting unit 1 is used, the shear plate 2 and the car 3 are connected together through the shear unit 1. When the elevator has a falling accident and the elevator falling buffer car acts, whether the shearing plate 2 and the long round hole 4 deform greatly or not is checked, and if the large deformation does not occur, the elevator can be repeatedly used only by replacing the shearing unit 1.
According to the elevator falling buffering lifesaving method utilizing shear energy absorption, when elevator control equipment fails and safety tongs cannot brake to cause overspeed falling, an elevator car falls to the bottom of a well at high speed, a shear plate 2 of the device collides with the ground of a pit, a lower shear unit 1 firstly generates shear deformation, due to the existence of the long round holes 4, the upper shear unit 1 sequentially generates shear deformation to absorb impact kinetic energy when the elevator falls, so that the impact kinetic energy when the elevator falls is gradually reduced to a safety value, and accordingly, passengers in the elevator car are prevented from being injured when the elevator falls to the bottom of the pit at high speed.
Claims (2)
1. The utility model provides an utilize elevator buffering car that falls of shearing energy-absorbing, includes car (3), its characterized in that: a plurality of rows of shearing units (1) are arranged at the four-corner frame or the periphery of the joint of the car (3) and the bearing frame; the car buffer structure is characterized by further comprising a shearing plate (2), wherein the shearing plate (2) is provided with a long round hole (4) matched with the shearing unit (1) in shape and position, the shearing plate (2) penetrates through the long round hole (4) on the shearing unit (1) to be connected with the car (3), and the bottom of the shearing plate (2) extends out of the car (3) by a preset length, so that when the car (3) falls, the shearing plate (2) is firstly connected with the ground of a pit to achieve the purpose of buffering; the length of the long round hole (4) on the shearing plate (2) is gradually increased along with the height, so that the shearing unit (1) is not completely sheared at one time in a falling process, but is sequentially sheared in sections, falling energy is absorbed step by step, and the requirement of protecting human body safety and not exceeding specified overload is met;
the shape of the shear plate (2) is determined according to the actual size and shape of the car (3), is L-shaped, C-shaped or single plate, is placed at the four corners of the square car when being L-shaped, and is connected with the frame structure;
the shearing unit (1) is a bolt or a pin.
2. The elevator falling buffer car capable of absorbing energy by shearing as claimed in claim 1, wherein: the shearing unit (1), the shearing plate (2) and the long round hole (4) form a shearing energy absorption device which is arranged on an external frame of the elevator car (3) or arranged inside the elevator car (3); if the rigidity of the car frame structure is insufficient, the rigidity is increased, so that the car frame structure can adapt to impact in falling, and cannot deform greatly, thereby influencing the safe survival space of passengers in the car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335808.9A CN107128771B (en) | 2017-05-12 | 2017-05-12 | Elevator falling buffering car utilizing shear energy absorption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335808.9A CN107128771B (en) | 2017-05-12 | 2017-05-12 | Elevator falling buffering car utilizing shear energy absorption |
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| Publication Number | Publication Date |
|---|---|
| CN107128771A CN107128771A (en) | 2017-09-05 |
| CN107128771B true CN107128771B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710335808.9A Active CN107128771B (en) | 2017-05-12 | 2017-05-12 | Elevator falling buffering car utilizing shear energy absorption |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930401A (en) * | 2018-09-20 | 2018-12-04 | 杨洪 | attached lifting scaffold main frame |
| CN113401766B (en) * | 2021-07-23 | 2022-10-04 | 广东长城电梯有限公司 | Elevator car buffer device |
| CN115367587B (en) * | 2022-07-20 | 2023-08-11 | 镇江朝阳机电科技有限公司 | Elevator fall buffer based on fracture energy absorption principle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000009934A (en) * | 1998-07-29 | 2000-02-15 | 이종수 | Safety device of elevator |
| CN102718104A (en) * | 2012-07-10 | 2012-10-10 | 江南大学 | Mechanical energy-consumption-type buffer |
| CN105752797A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Lifesaving device and method for elevator falling buffering by utilizing solid shearing to absorb energy |
-
2017
- 2017-05-12 CN CN201710335808.9A patent/CN107128771B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000009934A (en) * | 1998-07-29 | 2000-02-15 | 이종수 | Safety device of elevator |
| CN102718104A (en) * | 2012-07-10 | 2012-10-10 | 江南大学 | Mechanical energy-consumption-type buffer |
| CN105752797A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Lifesaving device and method for elevator falling buffering by utilizing solid shearing to absorb energy |
Non-Patent Citations (1)
| Title |
|---|
| 侧压式电梯底坑缓冲装置设计;朱延香等;《科技资讯》;20131123(第33期);全文 * |
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| CN107128771A (en) | 2017-09-05 |
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