CN108394784B - Anti-falling wheel type safety device for passenger elevator - Google Patents
Anti-falling wheel type safety device for passenger elevator Download PDFInfo
- Publication number
- CN108394784B CN108394784B CN201810320069.0A CN201810320069A CN108394784B CN 108394784 B CN108394784 B CN 108394784B CN 201810320069 A CN201810320069 A CN 201810320069A CN 108394784 B CN108394784 B CN 108394784B
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- Prior art keywords
- wheel
- clamping
- elevator
- safety device
- locking
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Classifications
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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
-
- 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
Abstract
The utility model relates to a passenger elevator anti-falling wheel type safety device, which comprises a wheel type clamping device arranged on an elevator shaft, a ram and a clamping block which are corresponding to the clamping device and are fixed on the outer side wall of an elevator car, wherein the clamping device comprises a limiting brick and a clamping arm, the limiting brick is 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 elevator 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 passenger elevator anti-falling wheel type 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 and fast 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 anti-falling wheel type safety device for a passenger elevator.
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 a passenger elevator anti-falling wheel type safety device without electric control.
Another object of the invention is to provide a passenger elevator fall protection wheel type safety device with buffering effect.
In order to solve the technical problems, the invention discloses an anti-falling wheel type safety device of a passenger elevator, which comprises a wheel type clamping device arranged on an elevator shaft, and a ram and a clamping block which are corresponding to the wheel type clamping device and are fixed on the outer side wall of a car, wherein the clamping device comprises a first limit column and a clamping wheel; the collision hammer is arranged at the bottom of the side wall of the car, the clamping block is arranged at the upper part of the side wall of the car, and the collision hammer is 3-5cm wider than the clamping block in the horizontal direction;
the clamping wheel is elliptical and rotates around a fixed shaft, and the center of the fixed shaft is arranged on one side of the long shaft of the clamping wheel, which is close to the car; the first limit column is arranged above one side of the long shaft of the clamping wheel close to the car and is fixed on the side wall of the elevator shaft;
one end of the long shaft of the locking wheel, which is close to the car, is provided with an impact head, and the other end of the long shaft of the locking wheel is provided with a locking head;
the upper end of the short shaft of the clamping wheel is provided with an arc-shaped notch matched with a first limit column, and the first limit column is arranged on the movement track of the arc-shaped notch; the lower end of the short shaft of the clamping wheel is provided with a second limit column which is fixed on the side wall of the elevator shaft;
permanent magnet pieces are arranged in the arc-shaped notch; when the clamping wheel passes over the critical position, obvious suction force is generated between the permanent magnet piece and the first limiting column, so that the clamping wheel is accelerated to approach the first limiting column and is adsorbed and fixed.
The clamping wheel is provided with a cylindrical cavity at one side far away from the car, steel balls and adjusting bolts for adjusting the positions of the steel balls are arranged in the clamping wheel, and an included angle between the central line of the cylindrical cavity and a horizontal line is 120-170 degrees in a static state; the maximum speed limit of the elevator can be adjusted by a worker through controlling the position of the adjusting bolt and replacing steel balls with different masses, in addition, the situation that the locking wheel stops at the critical position and returns to the original position is not excluded, and the phenomenon can be avoided due to the existence of the steel balls: because cylindrical cavity locates in the block wheel and keeps away from car one side, when the block wheel motion, the steel ball can roll along cylindrical cavity, and when the block wheel stopped in critical position, the steel ball was got back to cylindrical cavity bottom under the effect of gravity, led to the block wheel focus to deviate to keeping away from car one side to make the block wheel return to the home position.
Preferably, the passenger elevator anti-falling wheel type safety device, wherein the impact head is contacted with the ram without touching the clamping block in a normal operation state of the elevator.
When the running speed of the elevator exceeds the maximum speed limit, the impact head collides with the collision hammer and then drives the clamping wheel to pass through the critical position, so that the clamping head collides with the clamping block to prevent the car from continuing to move.
When the elevator normally descends through the passenger elevator anti-falling wheel type safety device every time, the collision hammer vertically collides with the collision head, the whole clamping wheel 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 passenger elevator anti-falling wheel type safety device, the impact hammer contacts with the impact head inclined plane to drive the impact head to rotate along the shaft and turn up, and after the impact hammer is separated from the impact head inclined plane, the impact head returns to the original position under the action of gravity.
When the elevator fails and the running speed exceeds the maximum speed limit, the elevator descends through the passenger elevator anti-falling wheel type safety device, the collision hammer vertically collides with the head of the collision engine, the whole clamping wheel obtains larger kinetic energy to drive the clamping head to do circular motion to approach the elevator car, and the clamping wheel passes through the critical position, stops on the first limiting column and is adsorbed on the first limiting column through the permanent magnet sheet of the arc-shaped notch of the clamping wheel; then, the car continuously falls, the locking head meets the locking block, and the car stops moving.
Preferably, the passenger elevator anti-falling wheel type safety device is characterized in that the clamping head and the clamping wheel are integrally formed.
Preferably, the passenger elevator anti-falling wheel type safety device, wherein the clamping head is in a right-angle wedge shape.
Preferably, the passenger elevator anti-falling wheel type safety device is characterized in that the impact head is in a right triangle shape with a downward sloping side, and the right angle end of the impact head is connected with the clamping wheel shaft.
Preferably, the passenger elevator anti-falling wheel type safety device, wherein the shape of the ram is a right triangle with an upward sloping side. 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, the passenger elevator anti-falling wheel type safety device is characterized in that the clamping wheel is made of ultra-high strength steel.
Preferably, the passenger elevator anti-falling wheel type safety device, wherein the clamping block comprises a first clamping block and a second clamping block, and the first clamping block is fixed above the second clamping block in a welding way.
Preferably, the passenger elevator anti-falling wheel type 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, the passenger elevator anti-falling wheel type safety device is characterized in that a wear-resistant rubber layer is arranged outside the collision hammer. 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.
It is worth to say that the quality, the focus, the shape of the locking wheel, the position of fixed axle, first spacing post, second spacing post, the quality of steel ball all has the influence to the biggest speed limit value of elevator, need pass through the precision allocation and many times test, therefore, the debugging of the device should be carried out by professional.
The beneficial effects are that:
the passenger elevator anti-falling wheel type 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 and fast 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 a wheel-type locking device.
Fig. 2 is a schematic operation view of the passenger elevator anti-falling wheel type safety device when the elevator is normally ascending.
Fig. 3 is a schematic diagram of the operation of the passenger elevator fall protection wheel safety device when the elevator operation exceeds the 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 and 2, the anti-falling wheel type safety device of the passenger elevator comprises a wheel type clamping device 1 arranged on an elevator shaft, a ram 2 and a clamping block 3 which are corresponding to the wheel type clamping device 1 and are fixed on the outer side wall of a car 4, wherein the clamping device 1 comprises a first limit column 105 and a clamping wheel 101; the ram 2 is arranged at the bottom of the side wall of the car 4, the locking block 3 is arranged at the upper part of the side wall of the car 4, and the ram 2 is wider than the locking block 3 by 5cm in the horizontal direction;
the clamping wheel 101 is elliptical and rotates around the fixed shaft 104, and the center of the fixed shaft 104 is arranged on one side of the long shaft of the clamping wheel 101 near the car 4; the first limit column 105 is arranged above one side of the long shaft of the locking wheel, which is close to the car 4, and is fixed on the side wall of the elevator shaft;
an impact head 102 is arranged at one end of the long shaft of the locking wheel 101 close to the car 4, and a locking head 103 is arranged at the other end;
the upper end of the short shaft of the clamping wheel is provided with an arc notch 106 matched with the first limit column 105, and the first limit column 105 is arranged on the movement track of the arc notch 106; a second limit column 110 is arranged at the lower end of the short shaft of the locking wheel 101 and is fixed on the side wall of the elevator shaft;
permanent magnet pieces 111 are arranged in the arc-shaped gaps 106;
the locking wheel 101 is provided with a cylindrical cavity 107 in one side far away from the car, a steel ball 108 and an adjusting bolt 109 for adjusting the position of the steel ball are arranged in the cylindrical cavity, and the included angle between the center line of the cylindrical cavity and the horizontal line is 140 degrees in a static state.
In the normal operation state of the elevator, the striking head 102 is in contact with the striker 2 without touching the locking block 3.
The locking head 103 and the locking wheel 101 are integrally formed.
The locking head 103 is in a right-angle wedge shape.
The impact head 102 is in the shape of a right triangle with a downward sloping side, and the right-angle end of the impact head 102 is connected with the locking wheel 101 through a shaft.
The ram 2 is in the shape of a right triangle with the hypotenuse facing upwards.
The locking wheel 101 is made of 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 2 is externally provided with a wear-resistant rubber layer 201.
Example 2
As shown in fig. 2, when the elevator normally goes upward each time and passes through the passenger elevator anti-falling wheel type safety device, the impact hammer 2 contacts with the inclined surface of the impact head 102 to drive the impact head 102 to rotate along the shaft and turn up, and after the impact hammer 2 is out of contact with the inclined surface of the impact head 102, the impact head 102 returns to the original position under the action of gravity.
Example 3
As shown in fig. 3, when the elevator fails and the running speed exceeds the maximum speed limit, the car 4 descends through the passenger elevator anti-falling wheel type safety device, the collision hammer 2 and the collision head 102 collide vertically, the locking wheel 101 obtains larger kinetic energy to drive the locking head 103 to do circular motion to approach the car 1, the locking wheel 101 stops on the first limiting column 105 beyond the critical position, the locking head 103 collides with the locking block 3, and the car 4 stops moving.
In the process that the car 4 is stopped by the stop block, the second stop block 302 absorbs a large amount of kinetic energy, and meanwhile, the arc-shaped notch 106 can be compressed and deformed to absorb a large amount of kinetic energy when encountering a huge impact force, so that the invention has a good buffering effect in the process of stopping the movement of the car 4.
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 passenger elevator anti-falling wheel type safety device is characterized by comprising a wheel type clamping device arranged on an elevator shaft, and a ram and a clamping block which are corresponding to the wheel type clamping device and are fixed on the outer side wall of a car, wherein the clamping device comprises a first limit column and a clamping wheel; the collision hammer is arranged at the bottom of the side wall of the car, the clamping block is arranged at the upper part of the side wall of the car, and the collision hammer is 3-5cm wider than the clamping block in the horizontal direction;
the clamping wheel is elliptical and rotates around a fixed shaft, and the center of the fixed shaft is arranged on one side of the long shaft of the clamping wheel, which is close to the car; the first limit column is arranged above one side of the long shaft of the clamping wheel close to the car and is fixed on the side wall of the elevator shaft;
one end of the long shaft of the locking wheel, which is close to the car, is provided with an impact head, and the other end of the long shaft of the locking wheel is provided with a locking head;
the upper end of the short shaft of the clamping wheel is provided with an arc-shaped notch matched with a first limit column, and the first limit column is arranged on the movement track of the arc-shaped notch; the lower end of the short shaft of the clamping wheel is provided with a second limit column which is fixed on the side wall of the elevator shaft;
permanent magnet pieces are arranged in the arc-shaped notch;
the clamping wheel is provided with a cylindrical cavity at one side far away from the car, steel balls and adjusting bolts for adjusting the positions of the steel balls are arranged in the clamping wheel, and an included angle between the central line of the cylindrical cavity and a horizontal line is 120-170 degrees in a static state;
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 running speed of the elevator exceeds the maximum speed limit, the impact head collides with the collision hammer and then drives the clamping wheel to pass through the critical position, so that the clamping head collides with the clamping block to prevent the car from continuing to move.
2. A passenger conveyor fall protection wheel safety device according to claim 1, wherein the locking head is integrally formed with the locking wheel.
3. A passenger conveyor fall protection wheel safety device according to claim 1, wherein the locking head is in the form of a right angle wedge.
4. A passenger elevator fall protection wheeled safety device as claimed in claim 1, wherein the striker head is in the form of a right triangle with a hypotenuse facing downwards and the right end of the striker head is connected to the detent axle.
5. A passenger conveyor fall protection wheel safety device according to claim 1, wherein the ram is in the shape of a right triangle with the hypotenuse facing upwards.
6. A passenger conveyor fall protection wheel safety device according to claim 1, wherein the locking wheel material is ultra-high strength steel.
7. A passenger conveyor fall protection wheel safety device according to claim 1, wherein the locking blocks comprise a first locking block and a second locking block, the first locking block being welded and secured above the second locking block.
8. A passenger conveyor fall protection wheel safety device according to claim 7, wherein the second stop block is foamed aluminium material.
9. A passenger elevator fall protection wheel safety device according to claim 1, wherein the ram is provided with a wear-resistant rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320069.0A CN108394784B (en) | 2018-04-11 | 2018-04-11 | Anti-falling wheel type safety device for passenger elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320069.0A CN108394784B (en) | 2018-04-11 | 2018-04-11 | Anti-falling wheel type safety device for passenger elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108394784A CN108394784A (en) | 2018-08-14 |
| CN108394784B true CN108394784B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320069.0A Active CN108394784B (en) | 2018-04-11 | 2018-04-11 | Anti-falling wheel type safety device for passenger elevator |
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| CN (1) | CN108394784B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008019064A (en) * | 2006-07-13 | 2008-01-31 | Mitsubishi Electric Corp | Fall prevention device of elevator |
| CN104944247A (en) * | 2015-05-11 | 2015-09-30 | 重庆交通大学 | Novel safety device for elevator falling |
| CN106006280A (en) * | 2016-06-26 | 2016-10-12 | 苏州中远电梯有限公司 | Lift anti-falling mechanism provided with buffer device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2751233B1 (en) * | 1996-07-16 | 1998-10-09 | Tractel Sa | AUTOMATIC FALL STOP DEVICE FOR PERSONNEL WORKING AT HEIGHT |
| 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 |
| CN204079150U (en) * | 2014-08-26 | 2015-01-07 | 盛嘉勋 | A kind of Novel elevator falling prevention device |
| CN204434019U (en) * | 2015-01-22 | 2015-07-01 | 张召古 | A kind of anti-falling safe elevator |
| CN106006288B (en) * | 2016-06-26 | 2018-04-17 | 苏州中远电梯有限公司 | A kind of locking system for elevator hand fall arrest |
| CN206427986U (en) * | 2017-02-07 | 2017-08-22 | 南京有多利物流设备制造有限公司 | Anti-fall device and jacking equipment |
| CN107572338A (en) * | 2017-08-31 | 2018-01-12 | 湖北怡缘茶叶有限公司 | A kind of new type of safe elevator and emergency safety control method |
| CN107524286B (en) * | 2017-09-20 | 2019-11-22 | 江苏易明昌建设工程有限公司 | A kind of falling proof device of construction attachment type raise scaffold |
| CN208292455U (en) * | 2018-04-11 | 2018-12-28 | 波士顿电梯（湖州）有限公司 | The wheeled safety device of elevator fall arrest |
-
2018
- 2018-04-11 CN CN201810320069.0A patent/CN108394784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008019064A (en) * | 2006-07-13 | 2008-01-31 | Mitsubishi Electric Corp | Fall prevention device of elevator |
| CN104944247A (en) * | 2015-05-11 | 2015-09-30 | 重庆交通大学 | Novel safety device for elevator falling |
| CN106006280A (en) * | 2016-06-26 | 2016-10-12 | 苏州中远电梯有限公司 | Lift anti-falling mechanism provided with buffer device |
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| CN108394784A (en) | 2018-08-14 |
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