CN114426235B - Electronic safety gear trigger for elevator - Google Patents
Electronic safety gear trigger for elevator Download PDFInfo
- Publication number
- CN114426235B CN114426235B CN202111654290.8A CN202111654290A CN114426235B CN 114426235 B CN114426235 B CN 114426235B CN 202111654290 A CN202111654290 A CN 202111654290A CN 114426235 B CN114426235 B CN 114426235B
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- CN
- China
- Prior art keywords
- elastic mechanism
- push rod
- electric push
- electromagnetic chuck
- sucker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005389 magnetism Effects 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses an electronic safety tongs trigger of an elevator, which is characterized in that: the elastic mechanism is used for driving the lifting plate of the safety tongs, the electromagnetic chuck is connected to the elastic mechanism, the electromagnetic chuck and the elastic mechanism attract each other to enable the elastic mechanism to be kept in a reset state, the electromagnetic chuck loses magnetism and is separated from the elastic mechanism during braking, and the elastic mechanism bounces off and drives the safety tongs to brake; the electromagnetic chuck is provided with an electric push rod, the electric push rod stretches out and pushes the electromagnetic chuck to adsorb the elastic mechanism, and then the electric push rod retracts and pulls the elastic mechanism to a reset state. The electronic safety tongs trigger does not adopt a speed limiter, a tensioning device, a speed limiter wire rope and a mechanism of a safety linkage device, and has the advantages of simple structure, better stability and reliability and reduced cost.
Description
Technical Field
The invention relates to the technical field of elevator parts, in particular to an electronic safety tongs trigger of an elevator.
Background
The trigger device of the existing safety tongs adopts a pure mechanical structure which is very complex and assembled by means of a plurality of devices, and generally comprises a speed limiter, a tensioning device, a speed limiter steel wire rope and a safety linkage device.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electronic safety gear trigger of an elevator, which does not adopt a speed limiter, a tensioning device, a speed limiter steel wire rope and a safety linkage device, has a simple structure, better stability and reliability and can reduce the cost.
The technical scheme of the invention is that the electronic safety tongs trigger of the elevator is provided with the following structure, the elastic mechanism is used for driving the lifting plate of the safety tongs, the elastic mechanism is connected with the electromagnetic chuck, the electromagnetic chuck and the elastic mechanism are attracted to keep the elastic mechanism in a reset state, and the electromagnetic chuck loses magnetism and is separated from the elastic mechanism when braking, and the elastic mechanism ejects and drives the safety tongs to brake; the electromagnetic chuck is provided with an electric push rod, the electric push rod stretches out and pushes the electromagnetic chuck to adsorb the elastic mechanism, and then the electric push rod retracts and pulls the elastic mechanism to a reset state.
In the initial state: the electromagnetic chuck and the elastic mechanism attract each other to enable the elastic mechanism to be compressed and kept in a reset state, and the elastic force of the elastic mechanism enables the lifting plate of the safety tongs to be in a reset state.
When braking: the elevator has power failure or overspeed in the running process of the elevator car, the electromagnetic chuck loses power, the elastic mechanism triggers, the lifting plate is driven to enable the safety tongs to work, the safety tongs are in a pre-triggering state at the moment, and the car is safely clamped to stop when the car continues to descend.
When resetting, if overspeed action is performed, the lift car is required to be started to ascend more than or equal to 50mm, and then the electric push rod resetting elastic mechanism is controlled remotely and manually.
The elastic mechanism comprises a pressure spring and a sucker, wherein the pressure spring is in a compression state in an initial state, and the sucker is attracted with the electrified electromagnetic sucker; when braking, the electromagnetic chuck loses magnetism and is separated from the chuck, so that the pressure spring stretches out and drives the lifting plate of the safety tongs.
The electric push rod is provided with a travel switch, the electric push rod is upwards sucked by the sucker in a reset state and continuously upwards, the sucker reaches an upper limit moving position, the whole electric push rod is reversely pushed to reversely move so as to trigger the travel switch, the sucker is driven by the electric push rod to reset, and the electric push rod and the sucker are upwards reset to an initial state under the action of a pressure spring at the bottom of the electric push rod.
After adopting the structure, the invention has the following advantages:
1. the electromagnetic chuck and the sucking disc are mutually sucked and separated to realize the resetting and braking of the safety tongs, so that the safety tongs are good in stability and simple in structure.
2. The trigger can be triggered and reset by adopting the electromagnetic chuck with smaller power, so that the cost is reduced.
3. The electronic safety tongs replace structures including a speed limiter, a tensioning device, a speed limiter wire rope, a safety linkage device and the like, improve the installation efficiency of the elevator, reduce the cost and greatly reduce the installation space required by the whole device.
Drawings
Fig. 1 presents an explosion diagram of the electric safety gear trigger of the elevator according to the invention.
Fig. 2 is a perspective view of the normal state of the electric safety gear trigger of the elevator of the present invention.
Fig. 3 is a front view of the triggering state of the electric safety gear trigger of the elevator of the invention. .
Fig. 4 is a schematic diagram of the connection of the lifting rod and the top rod according to the present invention.
The figure shows: 1. the device comprises a fixing seat, 2, an electromagnetic chuck, 3, a chuck, 4, a push rod, 5, a first bracket, 6, a first pressure spring, 7, a limiting block, 8, an electric push rod, 9, a second bracket, 10, a second pressure spring, 11, a travel switch, 12, a safety loop switch, 13, a lifting pull rod, 14 and a driving plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-4, the electronic safety gear trigger for an elevator of the invention drives a lifting plate of a safety gear by using an elastic mechanism, the elastic mechanism is connected with an electromagnetic chuck, the electromagnetic chuck and the elastic mechanism attract each other in a normal working state to keep the elastic mechanism in a reset state, and the elastic force of the elastic mechanism is used to keep the safety gear in a normal state; when braking, the electromagnetic chuck loses magnetism and is separated from the elastic mechanism, and the elastic mechanism springs open and drives the safety tongs to brake.
The elastic mechanism comprises a pressure spring and a sucker, wherein the pressure spring is in a compression state in an initial state, and the sucker is attracted with the electrified electromagnetic sucker; when braking, the electromagnetic chuck loses magnetism and is separated from the chuck, so that the pressure spring stretches out and drives the lifting plate of the safety tongs.
The electronic safety tongs trigger of the invention has three working states, namely: normal operating state, braking state and reset state.
In the normal working state: as shown in fig. 2, the electromagnetic chuck attracts the elastic mechanism to keep the elastic mechanism in a reset state, at this time, the elastic mechanism is elastically deformed, and the elastic force of the elastic mechanism makes the lifting plate of the safety tongs in a reset state.
When braking: as shown in fig. 3, the elevator has power failure or overspeed in the running process of the elevator car, the electromagnetic chuck is powered off, the elastic mechanism is triggered, the lifting plate is driven to enable the safety tongs to work, at the moment, the safety tongs are in a pre-triggering state, and the car is safely clamped to stop when the car continues to move downwards.
When the reset is carried out, the power is turned on after the power failure state, the reset is needed, the electric push rod is arranged on the electromagnetic chuck during the reset, the electric push rod stretches out and pushes the electromagnetic chuck to attract the elastic mechanism, and then the electric push rod retracts and pulls the elastic mechanism to reset to be in a compressed state. If overspeed action is performed, the lift car is required to be started to ascend more than or equal to 50mm, and then the electric push rod is remotely controlled to reset the elastic mechanism.
The electric push rod is provided with a travel switch, the electric push rod is upwards sucked by the sucker in a reset state and continuously upwards, the sucker reaches an upper limit moving position, the whole electric push rod is reversely pushed to reversely move so as to trigger the travel switch, the sucker is driven by the electric push rod to reset, and the electric push rod and the sucker are upwards reset to an initial state under the action of a pressure spring at the bottom of the electric push rod.
Example 1: the invention relates to an electronic safety gear trigger of an elevator, which comprises a fixed seat 1, an electromagnetic chuck 2, a chuck 3, a push rod 4, a first bracket 5 and a second bracket 9. The support 5 is fixed on the fixed seat 1, one end of the ejector rod 4 penetrates through the bent top plate of the first support 5 to be fixed with the sucker 3, and the other end of the ejector rod is connected with the lifting plate 13 on the electronic safety tongs.
The middle part of the ejector rod 4 is sleeved with a first pressure spring 6, one end of the first pressure spring 6 is propped against the top plate of the first bracket 5, and the other end of the first pressure spring is propped against a limiting block 7 fixed on the ejector rod 4; the first pressure spring 6 always provides upward elasticity for the ejector rod 4, in the triggering state, the electromagnetic chuck 2 is powered off and separated from the chuck 3, and the ejector rod 4 is upward under the action of the first pressure spring 6, in the resetting state, the electromagnetic chuck 2 is powered on and is attracted upward to the chuck 3, and the chuck 3 is driven downward to reset.
An electric push rod 8 is arranged below the electromagnetic chuck 2, the electric push rod 8 is purchased in a conventional market, a telescopic rod of the electric push rod 8 can linearly stretch and retract after being electrified, the telescopic rod of the electric push rod 8 penetrates through the first bracket 5 to push and pull the electromagnetic chuck 2 to linearly reciprocate and retract, the electric push rod 8 is arranged on the second bracket 9, the second bracket 9 is in sliding connection with the fixed seat 1, and the sliding direction is consistent with the sliding direction of the electromagnetic chuck 2; a second compression spring 10 for providing upward elastic force is arranged below the second bracket 9.
The electric push rod 8 is provided with a travel switch 11, and the travel switch 11 is arranged on the first bracket 5; the fixed seat 1 is provided with a safety loop switch 12 connected with an elevator control board, and the limiting block 7 is provided with a driving mechanism for opening or resetting the safety loop switch 12.
The driving mechanism comprises a driving plate 14 and a first driving wheel, wherein the driving plate 14 is of a lever structure, the driving plate 14 is of a bending structure, a fulcrum is located at a bending position and is connected to the fixed seat 1, the first driving wheel is installed on the limiting block 7 and is propped against the outer side wall of a power arm of the driving plate 14, a resistance arm of the driving plate 14 is propped against the driving end of the safety circuit switch 12, the limiting block 7 drives the first driving wheel upwards and pushes the power arm of the driving plate 14 to rotate along the fulcrum, and at the moment, the resistance arm of the driving plate 14 swings downwards and pushes and triggers the safety circuit switch 12.
The ejector rod 4 is connected with a lifting plate 13 on the electronic safety tongs through a connecting mechanism, the connecting mechanism comprises a second driving plate, a connecting shaft and a limiting plate, the top end of the ejector rod 4 is connected with the top of the second driving plate, the second driving plate is of a bending structure, the bottom end of the second driving plate is connected with the lifting plate 13 and the connecting points are all hinged through the connecting shaft, one end of the limiting plate is hinged on the connecting shaft, the other end of the limiting plate is connected with the fixing base 1 in a rotating mode, and the limiting plate is used for limiting the moving direction of the connecting shaft, namely, the center of the limiting plate, which is arranged on the fixing base 1, is round. The connecting shaft is movably embedded in the arc-shaped hole of the fixed seat 1; the both ends of connecting axle are located the both sides of fixing base 1 respectively, and the one end and the lifting plate 13 of limiting plate are all installed on the connecting axle. The ejector rod 4 drives the second driving plate upwards, and the second driving plate drives the end part of the lifting plate 13 to swing upwards in the arc-shaped hole.
The top of second drive plate is equipped with guide structure, guide structure includes two stoppers and limiting plate, two stoppers are fixed on fixing base 1, and are equipped with the interval between the two, form the passageway that supplies the activity of second drive plate to pass, the limiting plate is fixed on two stoppers, the limiting plate links as an organic wholely with the trigger shell. The second driving plate is driven by the top end of the ejector rod 4 to move upwards, and the channel can position the moving direction of the second driving plate.
The second bracket 9 is provided with at least one long hole, the fixed seat 1 is provided with positioning rods with the same number as the long holes, each long hole is respectively sleeved with a corresponding positioning rod, and the second bracket 9 takes all the positioning rods as linear sliding references.
The side wall of the first driving wheel is provided with an annular groove, the driving plate 14 is in rolling connection with the bottom surface of the annular groove of the first driving wheel, and the first driving wheel rotates and pushes the driving plate 14 upwards to swing along a fulcrum.
Working principle:
in a normal state, as shown in fig. 2, the sucker 3 is attracted with the electrified electromagnetic sucker 2; at this time, the ejector rod 4 is located at the bottom position, and the pulling plate 13 on the electric safety gear is also located at the bottom position, so that the electric safety gear does not trigger braking.
In the triggering state, as shown in fig. 3, the electromagnetic chuck 2 is powered off and separated from the chuck 3, and the first pressure spring 6 resets and pushes the limiting block 7 and the ejector rod 4 to drive the lifting rod 13 of the electronic safety tongs upwards, so that the electronic safety tongs are braked; the limiting block 7 drives the first driving wheel upwards and pushes the power arm of the driving plate 14 to rotate along the fulcrum, and at the moment, the resistance arm of the driving plate 14 swings downwards and pushes and triggers the safety circuit switch 12.
In the reset state, the electric push rod 8 pushes the electrified electromagnetic chuck 2 to attract the chuck 3 until the travel switch 11 is triggered, and then pulls the chuck 3, the limiting block 7 and the ejector rod 4 downwards to reset. In the reset state, the electric push rod 8 is upwards sucked by the sucker 3 and continuously upwards, the upper limit position of the sucker 3 reversely pushes the whole electric push rod 8 and the second bracket 9 downwards along the fixed seat 1 so as to trigger the travel switch 11, the electric push rod 8 drives the sucker 3 to downwards reset, and the electric push rod 3 and the electromagnetic sucker 2 upwards reset under the action of the second pressure spring 10.
Claims (3)
1. An electronic safety gear trigger for an elevator, characterized in that: the elastic mechanism is used for driving the lifting plate of the safety tongs, the electromagnetic chuck is connected to the elastic mechanism, the electromagnetic chuck and the elastic mechanism attract each other to enable the elastic mechanism to be kept in a reset state, the electromagnetic chuck loses magnetism and is separated from the elastic mechanism during braking, and the elastic mechanism bounces off and drives the safety tongs to brake; an electric push rod is arranged on the electromagnetic chuck, the electric push rod stretches out and pushes the electromagnetic chuck to adsorb the elastic mechanism, and then the electric push rod retracts and pulls the elastic mechanism to a reset state; in the initial state: the electromagnetic chuck is attracted with the elastic mechanism to enable the elastic mechanism to be compressed and kept in a reset state, and the elastic force of the elastic mechanism enables the lifting plate of the safety tongs to be in a reset state; when braking: overspeed is achieved in the elevator power failure or elevator car running process, the electromagnetic chuck is powered off, the elastic mechanism is triggered, the lifting plate is driven to enable the safety tongs to work, at the moment, the safety tongs are in a pre-trigger state, and the car is safely clamped to stop when the car continues to descend; when resetting, if overspeed action is performed, the lift car is required to be started to ascend more than or equal to 50mm, and then the electric push rod resetting elastic mechanism is controlled remotely and manually.
2. An electronic safety gear trigger for an elevator according to claim 1, characterized in that: the elastic mechanism comprises a pressure spring and a sucker, wherein the pressure spring is in a compression state in an initial state, and the sucker is attracted with the electrified electromagnetic sucker; when braking, the electromagnetic chuck loses magnetism and is separated from the chuck, so that the pressure spring stretches out and drives the lifting plate of the safety tongs.
3. The electronic safety gear trigger of an elevator according to claim 1 or 2, characterized in that: the electric push rod is provided with a travel switch, the electric push rod is upwards sucked by the sucker in a reset state and continuously upwards, the sucker reaches an upper limit moving position, the whole electric push rod is reversely pushed to reversely move so as to trigger the travel switch, the sucker is driven by the electric push rod to reset, and the electric push rod and the sucker are upwards reset to an initial state under the action of a pressure spring at the bottom of the electric push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654290.8A CN114426235B (en) | 2021-12-31 | 2021-12-31 | Electronic safety gear trigger for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111654290.8A CN114426235B (en) | 2021-12-31 | 2021-12-31 | Electronic safety gear trigger for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114426235A CN114426235A (en) | 2022-05-03 |
| CN114426235B true CN114426235B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111654290.8A Active CN114426235B (en) | 2021-12-31 | 2021-12-31 | Electronic safety gear trigger for elevator |
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| Country | Link |
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| CN (1) | CN114426235B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202643033U (en) * | 2012-05-30 | 2013-01-02 | 江门市蒙德电气股份有限公司 | Electronic control elevator car braking device |
| CN108033330A (en) * | 2017-12-14 | 2018-05-15 | 广州广日电梯工业有限公司 | The speed monitoring and brake apparatus of a kind of vertical lifting equipment |
| CN110526094A (en) * | 2019-09-26 | 2019-12-03 | 西继迅达（许昌）电梯有限公司 | The counterweight frame of having electronic lifting safety tongs |
| CN110697536A (en) * | 2018-07-09 | 2020-01-17 | 杭州沪宁电梯部件股份有限公司 | Safety brake device |
| CN111731964A (en) * | 2020-07-24 | 2020-10-02 | 刘英辉 | Safety gear lifting device, elevator car and using method of elevator car |
| CN113148803A (en) * | 2021-03-10 | 2021-07-23 | 宁波奥德普电梯部件有限公司 | Electronic safety gear trigger of elevator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10654686B2 (en) * | 2015-06-30 | 2020-05-19 | Otis Elevator Company | Electromagnetic safety trigger |
-
2021
- 2021-12-31 CN CN202111654290.8A patent/CN114426235B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202643033U (en) * | 2012-05-30 | 2013-01-02 | 江门市蒙德电气股份有限公司 | Electronic control elevator car braking device |
| CN108033330A (en) * | 2017-12-14 | 2018-05-15 | 广州广日电梯工业有限公司 | The speed monitoring and brake apparatus of a kind of vertical lifting equipment |
| CN110697536A (en) * | 2018-07-09 | 2020-01-17 | 杭州沪宁电梯部件股份有限公司 | Safety brake device |
| CN110526094A (en) * | 2019-09-26 | 2019-12-03 | 西继迅达（许昌）电梯有限公司 | The counterweight frame of having electronic lifting safety tongs |
| CN111731964A (en) * | 2020-07-24 | 2020-10-02 | 刘英辉 | Safety gear lifting device, elevator car and using method of elevator car |
| CN113148803A (en) * | 2021-03-10 | 2021-07-23 | 宁波奥德普电梯部件有限公司 | Electronic safety gear trigger of elevator |
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| Publication number | Publication date |
|---|---|
| CN114426235A (en) | 2022-05-03 |
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