CN108394785B - Anti-falling safety device for freight elevator for building - Google Patents
Anti-falling safety device for freight elevator for building Download PDFInfo
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- CN108394785B CN108394785B CN201810321088.5A CN201810321088A CN108394785B CN 108394785 B CN108394785 B CN 108394785B CN 201810321088 A CN201810321088 A CN 201810321088A CN 108394785 B CN108394785 B CN 108394785B
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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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- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The scheme relates to an anti-falling safety device of a cargo lift for a building, which comprises guide rails at two sides of a lift car and clamping wheels fixed on the two sides of the lift car, wherein the guide rails comprise a main guide rail and a clamping rail which are arranged oppositely, gear teeth matched with the clamping wheels are arranged on the main guide rail, a clamping surface is arranged on the clamping rail, and a plurality of clamping sheets matched with the clamping wheels are arranged on the clamping surface; the main guide rail is connected with the top shaft of the clamping rail, the bottom of the main guide rail is fixed on the ground, and the bottom of the clamping rail is provided with a pushing device; the anti-falling safety device for the freight elevator for the building realizes the anti-falling effect of the elevator by adopting a locking and clamping wheel mode, has the characteristics of bearing large load, resisting instant impact and buffering and absorbing energy, and is suitable for the freight elevator for the building with larger load.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to an anti-falling safety device of a cargo lift for a building.
Background
With the continuous development of Chinese economy, elevators are becoming more and more popular in the urban development of China, and freight elevators are indispensable in the construction process of a plurality of high-rise buildings and construction sites. Because the goods elevator load is great, partial goods elevator lacks the safety guarantee of enough intensity, in case the elevator appears falling the phenomenon, will cause serious result, light then damages the goods, the extension time limit for a project, heavy then the ladder destroys the people and dies.
When the goods elevator carries heavier goods, the load increases, if the situations such as cable breakage, elevator car drop occur at this moment, the elevator car moves downwards under huge inertia, and if a strong stopping measure is adopted at this moment, a huge instantaneous impact force can be formed, so that the car is deformed or the goods elevator running system is damaged, and even secondary drop can be caused.
Disclosure of Invention
The invention aims to provide a falling-preventing safety device of a cargo lift for a building, which can bear a large load.
Another object of the invention is to provide a safety device for preventing a cargo lift for a building from falling with a buffering effect.
In order to solve the technical problems, the invention discloses an anti-falling safety device of a cargo lift for a building, which comprises guide rails at two sides of a lift car and clamping wheels fixed on the two sides of the lift car, wherein the clamping wheels are herringbone gears or spur gears, and the herringbone gears are adopted to eliminate the abnormal movement from the horizontal direction, so that the lift can run more stably, and the clamping wheels can be effectively prevented from being separated from the main guide rails when being clamped. The guide rail comprises a main guide rail and a clamping rail which are oppositely arranged, gear teeth matched with the clamping wheels are arranged on the main guide rail, a clamping surface is arranged on the clamping rail, and a plurality of clamping sheets matched with the clamping wheels are arranged on the clamping surface; the main guide rail is connected with the top shaft of the clamping rail, the bottom of the main guide rail is fixed on the ground, and the bottom of the clamping rail is provided with a pushing device;
when the elevator works normally, the distance between the main guide rail and the clamping rail working surface is larger than the diameter of the clamping wheel, and the clamping wheel moves up and down along the main guide rail; when the elevator is abnormal, triggering the pushing device to push the clamping rail to approach the main rail, and locking the clamping wheel;
a speed sensor is arranged on the main guide rail, and a rotating shaft of the clamping wheel is provided with a rotating speed sensor; the clamping wheel is connected with a fixed rod shaft on the car; when an abnormal condition occurs, the pushing device is immediately started, and the locking rail is pushed to the main rail by a small distance, so that the locking rail is contacted with the locking wheel, the locking wheel can not rotate any more, and the effect of locking the car is achieved.
Preferably, the anti-falling safety device of the freight elevator for the building comprises a plurality of locking wheels which are respectively arranged on two sides of a car or are vertically arranged. The more the locking wheels are, the smaller the load of the single locking wheel is, and the more the locking sheets can participate in the locking effect at the same time, the more the locking effect is ensured.
Preferably, the anti-falling safety device of the freight elevator for the building is characterized in that the shape of each clamping piece is matched with that of the clamping wheel, so that the clamping piece and the clamping wheel have reasonable contact area.
Preferably, the anti-falling safety device of the freight elevator for the building triggers the propulsion device when the speed sensor detects that the speed of the elevator is higher than a set value.
Preferably, the anti-falling safety device for the freight elevator for the building triggers the propulsion device when the rotation speed sensor detects that the rotation speed of the clamping wheel is higher than a set value.
Preferably, the anti-falling safety device of the freight elevator for the building is characterized in that the clamping piece is made of foamed aluminum materials. 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 Above energy, when the instantaneous impact force when elevator car was blocked is great, the card piece takes place deformation and breaks even, makes the card wheel continue to follow inertia along main guide rail motion, then runs into next card piece, in the in-process that card piece takes place deformation and breaks even, card piece has absorbed a large amount of kinetic energy, when running into next card piece, kinetic energy continues to attenuate, so reciprocating, until elevator car stops moving.
Preferably, the anti-falling safety device of the freight elevator for the building is characterized in that the clamping piece can be detached and replaced, and when the clamping piece is damaged or corroded, the clamping piece is replaced in time, so that the effect of the clamping piece is ensured.
Preferably, the anti-falling safety device of the freight elevator for the building is characterized in that the main guide rail is a groove type rail, and the clamping wheel can be effectively prevented from being separated from the main guide rail when being clamped.
Preferably, the anti-falling safety device of the freight elevator for the building is characterized in that the gear teeth are positioned at the bottom of the main guide rail.
The beneficial effects are that:
the anti-falling safety device for the freight elevator for the building realizes the anti-falling effect of the elevator by adopting a locking and clamping wheel mode, has the characteristics of bearing large load, resisting instant impact and buffering and absorbing energy, and is suitable for the freight elevator for the building with larger load.
Drawings
Fig. 1 is a schematic cross-sectional view of one side of a cargo lift fall arrest safety device for a building.
Fig. 2 is a schematic view of the locking piece.
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
The utility model provides a safety device that prevents falling for cargo lift for building, includes the guide rail of car 1 both sides and fixes the locking wheel 4 on the car both sides, locking wheel 4 is the spur gear, the guide rail includes main guide rail 2 and the locking rail 3 of relative setting, be equipped with the teeth of a cogwheel 201 that matches with locking wheel 4 on the main guide rail 2, be equipped with the locking face 301 on the locking rail 3, be equipped with a plurality of locking pieces 302 that match with locking wheel 4 on the locking face 301; the main guide rail 2 is connected with the top 303 of the clamping rail 3 through a shaft, the bottom 203 of the main guide rail 2 is fixed on the ground, and the bottom of the clamping rail 3 is provided with a pushing device 5;
when the elevator works normally, the distance between the working surfaces of the main guide rail 2 and the clamping rail 3 is larger than the diameter of the clamping wheel 4, the clamping wheel 4 is not contacted with the clamping rail 3, and the clamping wheel 4 moves up and down along the main guide rail 2; when the elevator is abnormal, the pushing device 5 is triggered to push the clamping rail 3 to approach the main rail 2 immediately, and the clamping wheel 4 is locked;
a speed sensor 202 is arranged on the main guide rail 2, and a rotating shaft 401 of the locking wheel 4 is provided with a rotating speed sensor 402; the clamping wheel 4 is connected with a fixed rod 101 on the car 1 through a shaft;
the locking wheels 4 are respectively arranged on two sides of the car or are vertically arranged.
The shape of each locking piece 302 is matched with that of the locking wheel 4.
When the speed sensor 202 detects that the elevator speed is above the set point, the propulsion device 5 is triggered.
When the rotation speed sensor 402 detects that the rotation speed of the locking wheel 4 is higher than the set value, the propulsion device 5 is triggered.
The material of the clamping piece 302 is 7050 type foamed aluminum manufactured by Sichuan Tadada new materials Co., ltd.
The locking piece 302 is removable and replaceable.
The main guide rail 2 is a groove type rail.
The gear teeth 201 are located at the bottom of the groove of the main rail 2.
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 (7)
1. The utility model provides a safety device that prevents falling for cargo lift for building, includes the guide rail of car both sides and fixes the card locking wheel on the car both sides, its characterized in that, card locking wheel is a herringbone gear or straight gear, the guide rail includes main guide rail and card locking rail of relative setting, be equipped with the teeth of a cogwheel that matches with card locking wheel on the main guide rail, be equipped with the card locking face on the card locking face, be equipped with a plurality of card locking piece that matches with card locking wheel on the card locking face, each card locking piece shape and card locking wheel phase-match, the cross-section shape of card locking piece is the toper, the card locking piece is foam aluminium material; the main guide rail is connected with the top shaft of the clamping rail, the bottom of the main guide rail is fixed on the ground, and the bottom of the clamping rail is provided with a pushing device;
when the elevator works normally, the distance between the main guide rail and the clamping rail working surface is larger than the diameter of the clamping wheel, and the clamping wheel moves up and down along the main guide rail; when the elevator is abnormal, triggering the pushing device to push the clamping rail to approach the main rail, and locking the clamping wheel;
a speed sensor is arranged on the main guide rail, and a rotating shaft of the clamping wheel is provided with a rotating speed sensor; the clamping wheel is connected with a fixed rod shaft on the car.
2. The drop protection device for a cargo lift for a building according to claim 1, wherein the locking wheels are one or a plurality of vertically arranged wheels on both sides of the car.
3. The drop protection safety device for a cargo lift for a building of claim 1, wherein the propulsion device is triggered when the speed sensor detects that the speed of the lift is above a set point.
4. The drop protection device for a cargo lift for construction according to claim 1, wherein the propulsion means is triggered when the rotational speed sensor detects that the rotational speed of the locking wheel is higher than a set value.
5. The drop protection device for a cargo lift for a building of claim 1, wherein the locking tab is removable for replacement.
6. The drop protection device for a cargo lift of claim 1 wherein the primary rail is a channel rail.
7. The drop protection device for a cargo lift for a building of claim 1 wherein the gear teeth are located at the bottom of the main rail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321088.5A CN108394785B (en) | 2018-04-11 | 2018-04-11 | Anti-falling safety device for freight elevator for building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810321088.5A CN108394785B (en) | 2018-04-11 | 2018-04-11 | Anti-falling safety device for freight elevator for building |
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| Publication Number | Publication Date |
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| CN108394785A CN108394785A (en) | 2018-08-14 |
| CN108394785B true CN108394785B (en) | 2023-07-04 |
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| CN201810321088.5A Active CN108394785B (en) | 2018-04-11 | 2018-04-11 | Anti-falling safety device for freight elevator for building |
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Families Citing this family (1)
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| CN109403851B (en) * | 2018-09-14 | 2020-12-04 | 河南净润环境科技有限公司 | Associated control method for ladder climbing pedal and guide rail braking device |
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| CN206607838U (en) * | 2017-03-17 | 2017-11-03 | 甘肃第六建设集团股份有限公司 | A kind of anti-falling device of attached lifting scaffold |
| CN107601206A (en) * | 2017-09-01 | 2018-01-19 | 苏州臂之力工业设备有限公司 | A kind of fall arrest brake structure |
| CN208292457U (en) * | 2018-04-11 | 2018-12-28 | 波士顿电梯（湖州）有限公司 | Cargo lift falling-proof safety device for building |
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2018
- 2018-04-11 CN CN201810321088.5A patent/CN108394785B/en active Active
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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 |
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| CN108394785A (en) | 2018-08-14 |
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