CN108408531B - Elevator anti-falling safety device - Google Patents
Elevator anti-falling safety device Download PDFInfo
- Publication number
- CN108408531B CN108408531B CN201810320080.7A CN201810320080A CN108408531B CN 108408531 B CN108408531 B CN 108408531B CN 201810320080 A CN201810320080 A CN 201810320080A CN 108408531 B CN108408531 B CN 108408531B
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- elevator
- clamping
- safety device
- car
- rod
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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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)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The scheme relates to an elevator anti-falling safety device, which comprises a clamping device arranged on an elevator shaft, a collision hammer and a clamping block, wherein the collision hammer and the clamping block are correspondingly arranged on the outer side wall of a car, the clamping device is fixed on the outer side wall of the car, the clamping device comprises a limiting brick and a clamping arm, the limiting brick is trapezoid and is vertically fixed on the side wall of the elevator shaft, and the limiting brick is arranged between the clamping arm and the car; the clamping arm comprises a collision rod, a clamping rod and a rotating shaft, and the rotating shaft is arranged on the side wall of the elevator shaft; the elevator anti-falling safety device does not need electric control, gets rid of dependence on various sensors, clamps the elevator car when the elevator runs at a speed exceeding a limit speed, has a simple structure, is convenient to maintain, has a buffering effect when clamped, and has small damage to passengers and the elevator car.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to an elevator anti-falling safety device.
Background
With the continuous development of the economy in China, elevators are becoming more and more common in the urban development in China, and in most high-rise buildings, the elevators are indispensable. Because elevator load is great, partial elevator lacks the safety guarantee of sufficient intensity, once the elevator appears the phenomenon of falling, will cause serious result.
The current elevator safety device adopts a speed sensor, an acceleration sensor, an angular velocity sensor and the like to monitor the running state of an elevator except for a safety tongs which is commonly adopted, and the monitoring devices need to be electrified and regularly detect and maintain, so that the conditions of failure, reaction delay, false alarm and the like of the monitoring devices can sometimes occur, thereby causing potential safety hazards.
Disclosure of Invention
The invention aims to provide an elevator anti-falling safety device without electric control.
Another object of the invention is to provide an elevator fall protection safety device with a buffering effect.
In order to solve the technical problems, the invention discloses an elevator anti-falling safety device, which comprises a clamping device arranged on an elevator shaft, and a ram and a clamping block which are corresponding to the clamping device and are fixed on the outer side wall of a lift car, wherein the clamping device comprises a limiting brick and a clamping arm, the limiting brick is rectangular or trapezoidal and is vertically fixed on the side wall of the elevator shaft, and the limiting brick is arranged between the clamping arm and the lift car; the clamping arm comprises a collision rod, a clamping rod and a rotating shaft, and the rotating shaft is arranged on the side wall of the elevator shaft;
one end of the striking rod is provided with a striking head, and the other end of the striking rod is connected with the rotating shaft; one end of the clamping rod is provided with a clamping head, the other end of the clamping rod is connected with the rotating shaft, and an included angle of 130-155 degrees is formed between the collision rod and the clamping rod; the clamping rod is L-shaped;
the ram is 3-5cm wider than the clamping block in the horizontal direction;
a limit spring and a fixed rail are further arranged in the direction of one side of an extension line of the collision rod and the rotating shaft;
the clamping head is provided with a permanent magnet piece.
In the normal running state of the elevator, the striking head is contacted with the ram and can not touch the clamping block.
When the elevator normally descends through the anti-falling safety device of the elevator every time, the collision hammer vertically collides with the collision head, the whole clamping arm obtains kinetic energy to drive the clamping head to do circular motion to approach the car, but the clamping head stops moving before touching the clamping block due to limited obtained kinetic energy and returns to the original position under the action of gravity.
When the elevator normally goes upward each time and passes through the anti-falling safety device of the elevator, the collision hammer contacts with the inclined plane of the impact head, the contact time in the process is longer, the whole clamping arm obtains smaller kinetic energy, the clamping head is driven to do circular motion to be far away from the car, and the clamping head is quickly stopped to move and returns to the original position due to the action of the limiting spring.
When the elevator breaks down and the running speed exceeds the maximum speed limit, the elevator descends to pass through the elevator anti-falling safety device, the collision hammer vertically collides with the collision head, the whole clamping arm obtains larger kinetic energy to drive the clamping head to do circular motion to approach the car, the clamping head passes through the critical position, the clamping rod stops on the side edge of the limiting brick, the clamping head bumps against the side wall of the car, and is adsorbed on the side wall of the car under the action of the permanent magnet piece until encountering the clamping block, and the car stops moving under the support of the limiting brick.
Preferably, the elevator anti-falling safety device, wherein the height of the limiting spring can be adjusted along the fixed rail, and a worker can conveniently adjust the highest speed limit of the elevator by adjusting the height of the limiting spring.
Preferably, the elevator anti-falling safety device, wherein the locking head is spherical or rectangular.
Preferably, the elevator anti-falling safety device is characterized in that the impact head is in a right triangle shape with a downward sloping side.
Preferably, the elevator anti-falling safety device, wherein the ram is arranged at the bottom of the side wall of the elevator car, the shape of the ram is a right triangle with the inclined side upwards, and the clamping block is arranged at the upper part of the side wall of the elevator car. This makes the ram and impact head contact more gentle when the elevator is normally up, and more direct when down, the latch arm gains more kinetic energy.
Preferably, in the elevator anti-falling safety device, the mass of the locking rod is larger than that of the striker rod. The mass ratio and the length ratio of the clamping rod to the striker rod and the installation positions of the limit spring and the limit brick have influence on the maximum speed limit value of the elevator, and precise adjustment and multiple tests are needed, so that the debugging of the device should be carried out by professionals.
Preferably, in the elevator anti-falling safety device, the clamping rod is made of ultra-high strength steel.
Preferably, the elevator anti-falling safety device comprises a first clamping block and a second clamping block, wherein the first clamping block is fixed above the second clamping block in a welding way.
Preferably, the elevator anti-falling safety device, wherein the second clamping block is made of foamed aluminum material; the foamed aluminum has good high damping performance and impact energy absorptivity, and theoretically, the foamed aluminum with the porosity of 84 percent can absorb 2.5MJ/cm when 50 percent deformation occurs 3 The energy above, when the instantaneous impact force when elevator car is blocked is great, the second clamping piece takes place deformation, absorbs a large amount of kinetic energy, reduces the instantaneous impact force to the car, reduces the injury to passenger and car.
Preferably, in the elevator anti-falling safety device, a wear-resistant rubber layer is arranged outside the ram. The impact hammer is frequently contacted with the impact head, the service life of the impact head can be prolonged by adopting the wear-resistant rubber layer, the noise generated during contact is greatly reduced, and in addition, lubricating oil is also required to be smeared on the inclined surfaces of the impact hammer and the impact head periodically in order to reduce friction loss.
The beneficial effects are that:
the elevator anti-falling safety device does not need electric control, gets rid of dependence on various sensors, clamps the elevator car when the elevator runs at a speed exceeding a limit speed, has a simple structure, is convenient to maintain, has a buffering effect when clamped, and has small damage to passengers and the elevator car.
Drawings
Fig. 1 is a schematic view of an elevator fall arrest safety device during normal operation of the elevator.
Fig. 2 is a schematic view of an elevator fall arrest safety device when the elevator is operating beyond a maximum speed limit. .
Detailed Description
The present invention is described in further detail below by way of examples to enable those skilled in the art to practice the same by reference to the specification.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
As shown in fig. 1, an elevator anti-falling safety device comprises a clamping device 2 arranged on an elevator shaft, a ram 4 and a clamping block 3 which are corresponding to the clamping device and are fixed on the outer side wall of a car 1, wherein the clamping device 2 comprises a limiting brick 201 and a clamping arm, the limiting brick 201 is trapezoid and is vertically fixed on the side wall of the elevator shaft, and the limiting brick 201 is arranged between the clamping arm and the car 1; the clamping arm comprises a striker 203, a clamping rod 202 and a rotating shaft 208, and the rotating shaft 208 is arranged on the side wall of the elevator shaft;
one end of the striking rod 203 is provided with a striking head 209, and the other end is connected with a rotating shaft 208; one end of the locking rod 202 is provided with a locking head 206, the other end of the locking rod is connected with a rotating shaft 208, and an included angle of 130-155 degrees is formed between the striker 203 and the locking rod 202; the locking bar 202 is L-shaped;
the ram 3 is wider than the locking block 4 by 5cm in the horizontal direction;
the locking head 206 is provided with a permanent magnet piece 207;
a limit spring 205 and a fixed rail 204 are also arranged in the direction of one side of the extension line of the striker 203 and the rotating shaft 208;
in the normal operation state of the elevator car 1, the striking head 209 is in contact with the striker 4 without touching the locking piece 3.
The height of the limit spring 205 can be adjusted along the fixed rail 204.
The locking head 206 has a rectangular parallelepiped shape.
The impact head 209 is in the shape of a right triangle with the hypotenuse facing downward.
The collision hammer 4 is arranged at the bottom of the side wall of the car and is in the shape of a right triangle with the inclined side upwards, and the clamping block 4 is arranged at the upper part of the side wall of the car 1.
The mass of the locking bar 202 is greater than the mass of the striker 203.
The material of the locking rod 202 is ultra-high strength steel.
The locking block 3 comprises a first locking block 301 and a second locking block 302, and the first locking block 301 is fixed above the second locking block 302 by welding.
The second locking block 302 is made of foamed aluminum material.
The ram 4 is externally provided with a wear-resistant rubber layer 401.
Example 2
As shown in fig. 2, when the elevator fails and the running speed exceeds the maximum speed limit, the elevator car 1 moves down through the elevator anti-falling safety device, the ram 3 collides with the striking head 209 vertically, the whole clamping arm obtains larger kinetic energy to drive the clamping head 206 to move circumferentially towards the car 1, the clamping rod 202 is stopped on the side edge of the limit brick 201 beyond the critical position, the clamping head 206 touches the side wall of the car 1, and is adsorbed on the side wall of the car 1 under the action of the permanent magnet piece 207 until encountering the clamping block 3, and the car 1 stops moving under the support of the limit brick 201.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (9)
1. The anti-falling safety device of the elevator comprises a clamping device arranged on an elevator shaft, and a ram and a clamping block which are corresponding to the clamping device and are fixed on the outer side wall of a car, and is characterized in that the clamping device comprises a limiting brick and a clamping arm, the limiting brick is trapezoid and is vertically fixed on the side wall of the elevator shaft, and the limiting brick is arranged between the clamping arm and the car; the clamping arm comprises a collision rod, a clamping rod and a rotating shaft, and the rotating shaft is arranged on the side wall of the elevator shaft;
one end of the striking rod is provided with a striking head, and the other end of the striking rod is connected with the rotating shaft; one end of the clamping rod is provided with a clamping head, the other end of the clamping rod is connected with the rotating shaft, and an included angle of 130-155 degrees is formed between the collision rod and the clamping rod; the clamping rod is L-shaped;
the ram is 3-5cm wider than the clamping block in the horizontal direction;
the clamping head is provided with a permanent magnet piece;
a limit spring and a fixed rail are further arranged in the direction of one side of an extension line of the collision rod and the rotating shaft, and the height of the limit spring can be adjusted along the fixed rail;
in the normal running state of the elevator, the striking head is contacted with the ram and can not touch the clamping block.
2. The fall arrest safety device according to claim 1, wherein the locking head is spherical or rectangular.
3. The elevator fall protection safety device of claim 1 wherein the striker head is in the shape of a right triangle with hypotenuse facing downward.
4. The fall protection device for an elevator according to claim 1, wherein the striker is provided at the bottom of the side wall of the car in the shape of a right triangle with a hypotenuse facing upward, and the locking piece is provided at the upper portion of the side wall of the car.
5. The elevator fall protection safety device of claim 1 wherein the mass of the detent bar is greater than the mass of the striker bar.
6. The elevator fall protection safety device of claim 1, wherein the locking bar material is ultra-high strength steel.
7. The elevator fall protection safety device of claim 1, wherein the stop block comprises a first stop block and a second stop block, the first stop block being welded to be secured over the second stop block.
8. The elevator fall protection safety device of claim 7, wherein the second detent is a foamed aluminum material.
9. The fall arrest safety device according to claim 1, wherein said ram is provided with a wear-resistant rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320080.7A CN108408531B (en) | 2018-04-11 | 2018-04-11 | Elevator anti-falling safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320080.7A CN108408531B (en) | 2018-04-11 | 2018-04-11 | Elevator anti-falling safety device |
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| Publication Number | Publication Date |
|---|---|
| CN108408531A CN108408531A (en) | 2018-08-17 |
| CN108408531B true CN108408531B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810320080.7A Active CN108408531B (en) | 2018-04-11 | 2018-04-11 | Elevator anti-falling safety device |
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Citations (3)
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|---|---|---|---|---|
| JP2007217118A (en) * | 2006-02-16 | 2007-08-30 | Hitachi Plant Technologies Ltd | Falling prevention device of lifting body |
| CN102887409A (en) * | 2012-10-09 | 2013-01-23 | 长春理工大学 | Vertical-lifting elevator anti-falling protection device |
| CN102897624A (en) * | 2012-10-09 | 2013-01-30 | 长春理工大学 | Fall-prevention safety protection device for vertical lift elevator |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201135722Y (en) * | 2007-12-30 | 2008-10-22 | 王朝普 | Reversing mechanism of aloft work falling-proof device |
| CN102249165B (en) * | 2011-07-08 | 2013-10-23 | 洛阳涧光石化设备有限公司 | Fall protection device |
| CN102619418B (en) * | 2012-04-19 | 2014-07-30 | 无锡旭峰门业制造有限公司 | Automatic lock for preventing falling of automatic door |
| CN202785158U (en) * | 2012-09-27 | 2013-03-13 | 四川省思培科技有限公司 | Compact type falling-prevention device of lift |
| CN203306870U (en) * | 2013-03-20 | 2013-11-27 | 苏州台菱电梯有限公司 | Automatic anti-falling prevention device of elevator cab |
| CN204416827U (en) * | 2015-02-04 | 2015-06-24 | 郭剑辉 | The anti-fall device of vertical lift |
| CN205709299U (en) * | 2016-04-20 | 2016-11-23 | 康达电梯有限公司 | A kind of novel elevator falling proof device |
| CN106219363B (en) * | 2016-08-31 | 2018-11-20 | 住友富士电梯有限公司 | A kind of elevator of fall arrest |
| CN208292456U (en) * | 2018-04-11 | 2018-12-28 | 波士顿电梯（湖州）有限公司 | Elevator falling-proof safety device |
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2018
- 2018-04-11 CN CN201810320080.7A patent/CN108408531B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007217118A (en) * | 2006-02-16 | 2007-08-30 | Hitachi Plant Technologies Ltd | Falling prevention device of lifting body |
| CN102887409A (en) * | 2012-10-09 | 2013-01-23 | 长春理工大学 | Vertical-lifting elevator anti-falling protection device |
| CN102897624A (en) * | 2012-10-09 | 2013-01-30 | 长春理工大学 | Fall-prevention safety protection device for vertical lift elevator |
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| CN108408531A (en) | 2018-08-17 |
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