CN105836566A - Emergency protective device for elevator car - Google Patents
Emergency protective device for elevator car Download PDFInfo
- Publication number
- CN105836566A CN105836566A CN201610310792.1A CN201610310792A CN105836566A CN 105836566 A CN105836566 A CN 105836566A CN 201610310792 A CN201610310792 A CN 201610310792A CN 105836566 A CN105836566 A CN 105836566A
- Authority
- CN
- China
- Prior art keywords
- car
- trigger
- elevator
- buffer
- counterweight
- 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.)
- Pending
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Classifications
-
- 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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
- B66B5/024—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system where the abnormal operating condition is caused by an accident, e.g. fire
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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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an emergency protective device for an elevator car. The emergency protective device for the elevator car comprises a car buffer, a counterweight buffer, a safety switch, a first trigger, a second trigger and a speed detection assembly, wherein the speed detection assembly can be used for detecting operation speed of the car and/or a counterweight unit; when the car is positioned at or higher than the position of the first trigger or is positioned at or lower than the position of the second trigger, the first trigger/the second trigger triggers the safety switch to open; the speed detection assembly is used for detecting operation speed of the car and/or the counterweight unit; when the operation speed exceeds speed set by a control system, the control system controls a drive main engine brake to act, so that the speed generated when the car/ the counterweight unit is in contact with and hits against the car buffer/ the counterweight buffer is lower than the set impact speed. When an elevator has an emergency condition, the emergency protective device can effectively protect the car/counterweight unit, so that the occurrence of a safety accident is prevented, and the possibility that elevator components are damaged is also reduced.
Description
Technical field
The present invention relates to elevator technology field, especially a kind of lift car emergency protective device.
Background technology
At present, existing elevator includes the car that can move up and down and to the counterweight unit of car counterweight.In order to ensure the safety of elevator, at the bottom of the hole below car and counterweight unit, all it is respectively arranged with buffer.Under elevator runaway condition, when car is rushed to summit, counterweight unit is to pressure buffer at the bottom of undershoot, or car pressure buffer when car rushes the end.Buffer, to car/counterweight unit cushion stroke, makes car/slow reduction of speed of counterweight unit, reduces car/counterweight unit hard landing and causes the security incident of elevator and the damage of elevator.It can be said that buffer be equipment with boarding personnel last together with safety guarantee.General, the type selecting of buffer carries out 1:1 proportioning according to rated speed of lift.The i.e. normal speed of elevator is the highest, and the normal speed of buffer is the biggest, and corresponding braking distance is the longest, and the buffer space occupied in elevator hoistways is the biggest.
And in architectural design, often due to the overhead height of elevator hoistways or pit depth deficiency, the space of buffer needs cannot be met, at this moment can only select the buffer less than rated speed of lift so that buffer stroke adapts to the situation that ele-vator shaft spaces is not enough.When elevator runs into the emergency such as out of control, car or counterweight unit accelerate whereabouts and impinge upon on buffer, owing to normal speed and the stroke of buffer reduce, buffer cannot give car or the enough cushion stroke of counterweight unit, making car or counterweight unit likely hard landing can cause personal security accident, elevator also can therefore well damage.
Summary of the invention
In view of this, the invention aims to overcome the defect of prior art, it is provided that a kind of draft gear travel is little but can effectively protect elevator to use the lift car emergency protective device of safety.
For reaching above-mentioned purpose; the present invention provides a kind of lift car emergency protective device; elevator includes car, counterweight unit and traction wheel assembly; described traction wheel assembly is installed in the top of elevator hoistways; described traction wheel assembly is connected with driving host; driving host drives the operating of traction wheel assembly; car and counterweight unit are set up separately in the both sides of traction wheel assembly and are hung in the elevator hoistways below traction wheel assembly by pull rope connection; described car moves up and down under the drive of traction wheel assembly, and described counterweight unit is contrary with the direction of motion of car.Described lift car emergency protective device includes car buffer, counterweight buffer, safety switch, the first trigger, the second trigger, velocity measuring assembly and driving host brake；
Described car buffer and counterweight buffer are arranged at the bottom of the hole of elevator hoistways, described car buffer is positioned at the underface of car, described counterweight buffer is positioned at the underface of counterweight unit, described safety switch is arranged on car, described first trigger and the second trigger are arranged in elevator hoistways one on the other, described velocity measuring assembly can detect car and/or the speed of service of counterweight unit, and described velocity measuring assembly and safety switch are all connected with the control system of elevator；
When car is at or greater than the position of the first trigger, and described first trigger triggers safety switch and disconnects；Car is at or below the position of the second trigger, and described second trigger triggers safety switch and disconnects；When car is between the first trigger and the second trigger, described safety switch closes；
Described driving host brake is arranged at driving host and is connected with the control system of elevator, described driving host brake action can make car/counterweight unit slow down, when safety switch disconnects, the control system of elevator controls velocity measuring assembly and starts, velocity measuring component detection car and/or the speed of service of counterweight unit, when the speed of service exceedes the speed that control system sets, control system controls driving host brake action brake, speed when ensure that car/counterweight unit contact impact car buffer/counterweight buffer is less than car buffer/counterweight buffer speed.
Preferably, described safety switch is contactless safety switch, and described first trigger and the second trigger are Magnet.
Concrete, described safety switch is arranged on car top.
Preferably, described velocity measuring assembly includes setting up the first infrared sensor at elevator hoistways top and the second infrared sensor separately, it is arranged on the first infrared reflection plate of car top and is arranged on the second infrared reflection plate at counterweight unit top, described first infrared sensor is directed at the first infrared reflection plate, described second infrared sensor is directed at the second infrared reflection plate, described first infrared sensor and the second infrared sensor are connected with the control system of elevator respectively, described first infrared sensor can detect the distance of car and elevator hoistways top, described second infrared sensor can detect the distance of counterweight unit and elevator hoistways top.
Further, when car moves downwardly at the second trigger, described second infrared sensor is opened and detects the distance at counterweight cell distance elevator hoistways top and broadcasts data to the control system of elevator, and described control system obtains the real-time speed of car/counterweight unit after carrying out data conversion；When car moves up at the first trigger, described first infrared sensor is opened and detects the distance at car distance elevator hoistways top and broadcasts data to the control system of elevator, and described control system obtains the real-time speed of car/counterweight unit after carrying out data conversion.
Compared to prior art, the lift car emergency protective device of the present invention has the advantage that
The situation that Negotiation speed detection components detection lift car up and down motion stroke medium velocity monitoring car/counterweight unit runs, when the speed of service of car/counterweight unit exceedes the speed of setting, control driving host brake by apparatus for controlling elevator car/counterweight unit is effectively slowed down, car/counterweight unit its speed when clashing into car buffer/counterweight buffer is made to be less than the stroke speed set, it is ensured that car buffer/counterweight buffer can carry out buffer deceleration to car/counterweight unit in effective travel.The present invention can give car/counterweight unit when elevator runs into the emergency such as out of control and be effectively protected, and prevents the generation of security incident, also reduces the probability of elevator device failure.
Accompanying drawing explanation
Fig. 1 is car when being in the second toggle position, the status architecture schematic diagram of the present invention a kind of lift car emergency protective device；
Fig. 2 is car when being in the first toggle position, the status architecture schematic diagram of the present invention a kind of lift car emergency protective device；
Wherein: 1, car buffer；2, counterweight buffer；3, safety switch；4, the first trigger；5, the second trigger；6, the first infrared sensor；7, the second infrared sensor；8, the first infrared reflection plate；9, the second infrared reflection plate；100, car；101, counterweight unit；102, traction wheel assembly；103, elevator hoistways；104, pull rope.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in detail.
As depicted in figs. 1 and 2, a kind of lift car emergency protective device, elevator includes car 100, counterweight unit 101 and traction wheel assembly 102.Described traction wheel assembly 102 is installed in the top of elevator hoistways 103, and described traction wheel assembly 102 is connected with driving host (not shown), and driving host drives traction wheel assembly 102 to operate.Car 100 and counterweight unit 101 are set up separately in the both sides of traction wheel assembly 102 and are connected in the elevator hoistways 103 being hung at below traction wheel assembly 102 by pull rope 104.Described car 100 moves up and down under the drive of traction wheel assembly 102, and described counterweight unit 101 is contrary with the direction of motion of car 100.
Described lift car emergency protective device includes car buffer 1, counterweight buffer 2, safety switch the 3, first trigger the 4, second trigger 5, velocity measuring assembly and driving host brake (not shown).
Described car buffer 1 and counterweight buffer 2 are arranged at the bottom of the hole of elevator hoistways 103.Described car buffer 1 is positioned at the underface of car 100, and described counterweight buffer 2 is positioned at the underface of counterweight unit 101.Described safety switch 3 is arranged on car 100, and in the present embodiment, safety switch 3 is the top being installed in car 100, so, is highly convenient for in-site installation and wiring is connected with apparatus for controlling elevator.Certainly safety switch 3 can also be arranged on bottom or the sidepiece of car 100.Described first trigger 4 and the second trigger 5 are arranged in elevator hoistways 103 one on the other.In the present embodiment, described safety switch 3 is contactless safety switch, and described first trigger 4 and the second trigger 5 are Magnet.Described safety switch 3 is arranged on car 100 top.The contactless installation of safety switch 3 and the first trigger 4 and the second trigger 5 triggers, and effectively reduces the noise produced in running process of elevator.
Wherein, the first trigger 4 and second trigger 5 height and position in elevator hoistways 103 are determined by the distance of upper end to the lower end of car buffer 1/ counterweight buffer 2, i.e. the stroke S2 of the stroke S1/ counterweight buffer 2 of car buffer 1 determines.
Concrete,
Wherein Vr represents rated speed of lift；Vb represents the normal speed of car buffer 1/ counterweight buffer 2, and a represents the deceleration of the driving host brake of elevator.
Described velocity measuring assembly can detect car 100 and/or the speed of service of counterweight unit 101, and described velocity measuring assembly and safety switch 3 are all connected with the control system of elevator.In the present embodiment, described velocity measuring assembly includes setting up the first infrared sensor 6 at elevator hoistways 103 top and the second infrared sensor 7 separately, being arranged on the first infrared reflection plate 8 at car 100 top and be arranged on the second infrared reflection plate 9 at counterweight unit 101 top.Described first infrared sensor 6 is directed at the first infrared reflection plate 8, and described second infrared sensor 7 is directed at the second infrared reflection plate 9.Described first infrared sensor 6 and the second infrared sensor 7 are connected with the control system of elevator respectively.Described first infrared sensor 6 can detect car 100 and the distance at elevator hoistways 103 top in real time and broadcast data to the control system of elevator, and described second infrared sensor 7 can detect counterweight unit 101 and the distance at elevator hoistways top in real time and broadcast data to the control system of elevator.In the control system of elevator, joining day axle just can obtain the real-time speed of the car 100/ counterweight unit 101 of elevator.This detection car 100/ counterweight unit 101 speed mode is relatively simple.
When car 100 triggers safety switch 3 disconnect at or greater than the position of the first trigger 4, described first trigger 4；Car 100 triggers safety switch 3 disconnect at or below the position of the second trigger 5, described second trigger 5；When car 100 is between the first trigger 4 and the second trigger 5, and described safety switch 3 closes.
Described driving host brake is arranged at driving host and is connected with the control system of elevator, and described driving host brake action can make car 100/ counterweight unit 101 slow down.
The operation principle of the present invention is as described below:
When car 100 moves downwardly at the second trigger 5, safety switch 3 disconnects, the control system of elevator controls velocity measuring assembly and starts, the counterweight unit 101 distance apart from elevator hoistways top is opened and detected to described second infrared sensor 7, the control system of elevator processes through data and obtains the speed that counterweight unit 2 runs up, the speed that i.e. car 100 runs downwards.When the speed that the speed that car 100 runs downwards sets more than apparatus for controlling elevator, apparatus for controlling elevator controls driving host brake action brake makes car 100 slow down, it is ensured that car 100 clashes into the speed normal speed less than car buffer 1 of car buffer 1.
When car 100 moves up at the first trigger 4, safety switch 3 disconnects, the control system of elevator controls velocity measuring assembly and starts, the car 100 distance apart from elevator hoistways top is opened and detected to described first infrared sensor 6, and the control system of elevator processes through data and obtains the speed that car 100 runs up.When the speed that the speed that car 100 runs up sets more than apparatus for controlling elevator, apparatus for controlling elevator controls driving host brake action brake makes counterweight unit 101 slow down, it is ensured that counterweight unit 101 clashes into the speed normal speed less than counterweight buffer 2 of counterweight buffer 2.
In the present invention, first infrared sensor 6 only need detect the car 100 real-time distance between the first trigger 4 to elevator hoistways top, the second infrared sensor 7 only need detection detection car 100 bottom the second trigger 5 to elevator hoistways between time counterweight unit real-time distance.Visible, the requirement of the detecting distance of the first infrared sensor 6 and the second infrared sensor 7 is relatively low, and such first infrared sensor 6 and the second infrared sensor 7 can be with the relatively low infrared sensors of alternative costs.First infrared sensor 6 and the second infrared sensor are installed in the top of elevator hoistways, be highly convenient for in-site installation and wiring is connected with apparatus for controlling elevator.
The present invention can effectively protect the use safety of elevator on the basis of car buffer 1 and counterweight buffer 2 select the buffer that cushion stroke is less.At elevator in case of emergency, the speed of service of car 100/ counterweight unit 101 can be detected in time, by driving host brake, car 100/ counterweight unit 101 is slowed down, ensure that car 100/ counterweight unit 101 speed before striking car buffer 1/ counterweight buffer 2 can be down in zone of reasonableness so that the cushion stroke of car buffer 1 and counterweight buffer 2 disclosure satisfy that the buffer requirement of car 100/ counterweight unit 101.
Above-described embodiment is only for technology design and the feature of the explanation present invention; its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this; can not limit the scope of the invention with this; all equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
Claims (5)
- null1. a lift car emergency protective device，Elevator includes car (100)、Counterweight unit (101) and traction wheel assembly (102)，Described traction wheel assembly (102) is installed in the top of elevator hoistways (103)，Described traction wheel assembly (102) is connected with driving host，Driving host drives traction wheel assembly (102) operating，Car (100) and counterweight unit (101) are set up separately in the both sides of traction wheel assembly (102) and are connected by pull rope (104) in the elevator hoistways (103) being hung at traction wheel assembly (102) lower section，Described car (100) moves up and down under the drive of traction wheel assembly (102)，Described counterweight unit (101) is contrary with the direction of motion of car (100)，It is characterized in that: described lift car emergency protective device includes car buffer (1)、Counterweight buffer (2)、Safety switch (3)、First trigger (4)、Second trigger (5)、Velocity measuring assembly and driving host brake；Described car buffer (1) and counterweight buffer (2) are arranged at the bottom of the hole of elevator hoistways (103), described car buffer (1) is positioned at the underface of car (100), described counterweight buffer (2) is positioned at the underface of counterweight unit (101), described safety switch (3) is arranged on car (100), described first trigger (4) and the second trigger (5) are arranged in elevator hoistways (103) one on the other, described velocity measuring assembly can detect car (100) and/or the speed of service of counterweight unit (101), described velocity measuring assembly and safety switch (3) are all connected with the control system of elevator；When car (100) is at or greater than the position of the first trigger (4), and described first trigger (4) is triggered safety switch (3) and disconnected；Car (100) is at or below the position of the second trigger (5), and described second trigger (5) is triggered safety switch (3) and disconnected；When car (100) is between the first trigger (4) and the second trigger (5), described safety switch (3) closes；Described driving host brake is arranged at driving host and is connected with the control system of elevator, described driving host brake action can make car (100)/counterweight unit (101) slow down, when safety switch (3) disconnects, the control system of elevator controls velocity measuring assembly and starts, velocity measuring component detection car (100) and/or the speed of service of counterweight unit (101), when the speed of service exceedes the speed that control system sets, control system controls driving host brake action brake, speed when ensure that car (100)/counterweight unit (101) contact impact car buffer (1)/counterweight buffer (2) is less than the normal speed of car buffer (1)/counterweight buffer (2).
- A kind of lift car emergency protective device the most according to claim 1, it is characterised in that: described safety switch (3) is contactless safety switch, and described first trigger (4) and the second trigger (5) are Magnet.
- A kind of lift car emergency protective device the most according to claim 2, it is characterised in that: described safety switch (3) is arranged on car (100) top.
- null4. according to a kind of lift car emergency protective device described in claim 1 or 3，It is characterized in that: described velocity measuring assembly includes setting up the first infrared sensor (6) at elevator hoistways (103) top and the second infrared sensor (7) separately、It is arranged on the first infrared reflection plate (8) at car (100) top and is arranged on the second infrared reflection plate (9) at counterweight unit (101) top，Described first infrared sensor (6) is directed at the first infrared reflection plate (8)，Described second infrared sensor (7) is directed at the second infrared reflection plate (9)，Described first infrared sensor (6) and the second infrared sensor (7) are connected with the control system of elevator respectively，Described first infrared sensor (6) can detect car 100) and the distance at elevator hoistways (103) top，Described second infrared sensor (7) can detect the distance of counterweight unit (101) and elevator hoistways top.
- A kind of lift car emergency protective device the most according to claim 4; it is characterized in that: when car (100) moves downwardly to the second trigger (5) place; described second infrared sensor (7) opens and detects the distance at counterweight unit (101) distance elevator hoistways top and broadcasts data to the control system of elevator, and described control system obtains the real-time speed of car (100)/counterweight unit (101) after carrying out data conversion；When car (100) moves up to the first trigger (4) place, described first infrared sensor (6) opens and detects the distance at car (100) distance elevator hoistways top and broadcasts data to the control system of elevator, and described control system obtains the real-time speed of car (100)/counterweight unit (101) after carrying out data conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310792.1A CN105836566A (en) | 2016-05-12 | 2016-05-12 | Emergency protective device for elevator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310792.1A CN105836566A (en) | 2016-05-12 | 2016-05-12 | Emergency protective device for elevator car |
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| Publication Number | Publication Date |
|---|---|
| CN105836566A true CN105836566A (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610310792.1A Pending CN105836566A (en) | 2016-05-12 | 2016-05-12 | Emergency protective device for elevator car |
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| CN (1) | CN105836566A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946123A (en) * | 2017-04-26 | 2017-07-14 | 李宝坤 | A kind of building construction hoist |
| CN110980460A (en) * | 2019-11-19 | 2020-04-10 | 宁波颢峇电子科技有限公司 | Multifunctional elevator brake control device and method thereof |
| EP3730437A1 (en) * | 2019-04-25 | 2020-10-28 | KONE Corporation | A solution for overspeed monitoring of an elevator car |
| CN112723087A (en) * | 2020-11-30 | 2021-04-30 | 河北钢铁集团矿业有限公司 | Overwinding-preventing automatic control system for capital construction mine hoisting machine |
| CN112830360A (en) * | 2021-02-25 | 2021-05-25 | 深圳市特种设备安全检验研究院 | Testing device and testing method for elevator car uplink overspeed protection |
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| CN112830360A (en) * | 2021-02-25 | 2021-05-25 | 深圳市特种设备安全检验研究院 | Testing device and testing method for elevator car uplink overspeed protection |
| CN112830360B (en) * | 2021-02-25 | 2024-05-31 | 深圳市质量安全检验检测研究院 | Test device and test method for elevator car uplink overspeed protection |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180502 Address after: 215122 28 Weixin Road, Suzhou Industrial Park, Suzhou, Jiangsu Applicant after: Jiangnan Jiajie Lift Co., Ltd., Jiangsu Address before: 215122 Weixin road 28, Suzhou Industrial Park, Jiangsu Province Applicant before: Suzhou Fushi Elevator Co., Ltd. |
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| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |
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| RJ01 | Rejection of invention patent application after publication |