CN205328398U - A control braking system for towing formula elevator - Google Patents
A control braking system for towing formula elevator Download PDFInfo
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- CN205328398U CN205328398U CN201620032805.9U CN201620032805U CN205328398U CN 205328398 U CN205328398 U CN 205328398U CN 201620032805 U CN201620032805 U CN 201620032805U CN 205328398 U CN205328398 U CN 205328398U
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- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims description 17
- 238000000926 separation method Methods 0.000 abstract 1
- 230000001174 ascending effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model discloses a control braking system for towing formula elevator for it leads to the elevator problem of accident to appear when elevator braking system goes wrong to exist among the solution prior art. There is the computer lab system to include: installation driving sheave and leading wheel in the computer lab, backup brake wheel, leading wheel install backup brake wheel top and with the driving sheave separation, do not rub mutually when the mounted position makes the sedan -chair case with relative motion to reciprocal about heavy the doing, towline one end is fixed on the well top, the other end is followed the sedan -chair case and is returned the rope sheave lower part and wear to wind to following driving sheave upper portion, backup brake wheel lower part, leading wheel upper portion and wearing to walk around to heavy diverting pulley lower part, fixed connection is on the rope hitch plate, the fast sensor of wheel is installed and is taken turns to in backup brake for detect the translation rate of car. This control braking system outage, trouble system are stopped, normal condition not with the braked wheel friction, do not have wearing and tearing. Even like this the band -type brake of hauler old be negligent of maintaining also can guarantee safety.
Description
Technical field
This utility model relates to elevator safety guard technology field, particularly relates to a kind of monitoring brakes for traction elevator。
Background technology
Consulting shown in Fig. 1, traction steel-cable connects car by traction sheave one end, and one end connects counterweight。Hoist ropes one end is fixed on hoistway top, the other end returns rope sheave bottom from cab and passes around, and passed around from the diversion sheave bottom of traction sheave top and counterweight, it is fixedly connected on rope hitch plate, not rubbing mutually for making the car in hoistway each run along hoistway middle guide with counterweight, a directive wheel is placed in traction sheave side makes the two separately。The gravity of car and counterweight makes traction steel-cable be pressed in traction race and produces frictional force。So, motor rotation drives traction sheave to rotate, and drives steel wire rope, drags car and to recast relative motion。Namely car rises, and counterweight declines；Counterweight rises, cage descending。Then, car is along the upper and lower reciprocal operation of guide rail in hoistway, and elevator performs vertically to transport task。
The normally closed type brake unit that the control system of elevator controls, when only elevator runs, solenoid opens brake spring under the effect of magnetic force, and traction machine rotates thus driving car to move up and down。Solenoid dead electricity is braked tile fragment under the action of the spring and can tightly be controlled by braked wheel, thus ensureing that elevator is static。This cuts with control system and controls to make elevator stop at appointment position。Whether disk brake or contracting brake principle is the same。Certain protective measure is also a lot of such as traction machine dead electricity, band-type brake switch check the state of band-type brake, encoder to the detection of speed, the linkage of limiter of speed safety tongs, electrical safety loop protection etc.。
FAQs and the failure effect of elevator brake are as follows, the first electric information fault: the catalyst powered to restraining coil when control system Elevator landing working properly is aging, get an electric shock viscous connection, may result in the normally opened braking action inefficacy elevator faults of brake, now as car is fully loaded with, namely car mass is more than counterweight mass, the then downward movement of falling object of car, speed exceedes the 115% of the normal speed of elevator, limiter of speed action will make safety tongs be stuck on guide rail car to stop, but still have certain displacement, concrete distance and frictional force, toggle speed, acceleration is relevant, it is not easy to accurate calculating；If car is unloaded, namely car mass less than counterweight mass time, then car moves up, speed and falling speed are similar, elevator also can stop after protection device for over-speed ascending or counterweight-side safety tongs action, most elevators are to adopt protection device for over-speed ascending, but protection device for over-speed ascending does not have counterweight-side safety tongs reliable, because there being the situation that traction is inadequate, at this moment displacement is just larger, whether up-running over-speed protection or limiter of speed have one movement time scope, elevator will move certain distance, at this moment major part shearing accident occurs, anti function is adopted namely to go here and there two contacts, but the fault that the machinery of catalyst is stuck likely occurs, or the problem artificially taking down anti function in maintenance。The mechanical fault of the second, the problems such as the inconsistent traction caused of brake force deficiency that unreasonable, the greasy dirt such as the abrasion of brake rubber block, gap adjustment causes, steel rope abrasion, tension is not enough。Whether electrically or the phenomenon of the failure that causes of machinery is the same, if traction sheave weares and teares, steel wire rope tension irregular cause traction deficiency time the car that causes move up, protection device for over-speed ascending is invalid, the generation that still can cause the accident。
Summary of the invention
This utility model embodiment provides a kind of monitoring brakes for traction elevator, there is the problem causing elevator accident occur when elevator brake system goes wrong in order to solving in prior art。
A kind of monitoring brakes for traction elevator, this monitoring brakes being used for traction elevator includes:
Two top sheaves are installed in machine room, one lower sheave, wherein top sheave is traction sheave and directive wheel, lower sheave is alternate brake wheel, directive wheel is arranged on alternate brake wheel top and separates with traction sheave, installation site makes cab not rub mutually with to when focusing on the relative motion done up and down reciprocatingly, hoist ropes one end is fixed on hoistway top, the other end returns rope sheave bottom from cab and passes around, and from traction sheave top, alternate brake wheel bottom, the diversion sheave bottom of directive wheel top and counterweight passed around, it is fixedly connected on rope hitch plate, wherein, the installation site that traction sheave is taken turns with alternate brake makes the cornerite of traction sheave be more than or equal to 180 degree and less than 220 degree；
Traction machine, including traction sheave, for providing traction for cab so that cab with to focusing on the relative motion done in hoistway up and down reciprocatingly, and when traction machine is in off working state, be braked by the brake of traction machine；
Wheel speed sensors, is installed on alternate brake wheel, for detecting the translational speed of car；
Control unit, is used for judging that whether traction machine is in running order, when judging that described traction machine is in running order, whether continues the translational speed judging described car more than normal speed threshold value；When the translational speed of the described car of judgement is more than normal speed threshold value, the brake of instruction alternate brake wheel is braked；When judging that described traction machine is in off working state, whether continue the translational speed judging described car more than zero；When the translational speed of the described car of judgement is more than zero, the brake of instruction alternate brake wheel is braked。
Alternate brake is taken turns, and for when receiving the braking instruction that control unit sends, the brake taken turns by alternate brake is braked。
It is also preferred that the left wheel speed sensors is magneto-electric type wheel speed sensor or Hall wheel speed sensor。
This utility model beneficial effect includes: this set brakes is independent, and the brake of alternate brake wheel is also independent, it is achieved active and standby brakes。The wheel speed sensors installed additional on available backup braked wheel when elevator stops tests the speed, the theoretical velocity that elevator stops should be zero, if now elevator braking system faults, the brake of alternate brake wheel can stop elevator at once so that lift car does not move or a mobile only small segment distance；Wheel speed sensors device detection speed can be used when the elevator is run, now elevator car speed is rated speed of lift, if now elevator fault, such as encoder fault, frequency converter failure etc., or velocity anomaly, the brake can taken turns by alternate brake carrys out elevator brake。This system supplementing as up-running over-speed protection and limiter of speed, it is achieved dual fail-safe, and the precision of this device is higher than up-running over-speed protection and limiter of speed。This monitoring brakes should be switched on normally opened, power-off, fault stop, normal condition not with braked wheel friction, be also just absent from many less wears。Accordingly even when be the band-type brake of traction machine old be negligent of safeguarding also can guarantee that safety。
Accompanying drawing explanation
Fig. 1 is elevator structure schematic diagram of the prior art；
Fig. 2 is the structural representation of the monitoring brakes for traction elevator in this utility model embodiment；
Fig. 3 is the flow chart of the monitoring braking method for traction elevator in this utility model embodiment。
Detailed description of the invention
In order to improve the security performance of elevator, when preventing up hypervelocity, when breaking down, can stop elevator in time, avoid the generation of shearing accident, this utility model embodiment provides a kind of monitoring brakes for traction elevator, below in conjunction with Figure of description, preferred embodiment of the present utility model is illustrated。
This utility model embodiment provides a kind of monitoring brakes for traction elevator and method, wherein, consults shown in Fig. 2, and the monitoring brakes for traction elevator includes:
Two top sheaves are installed in machine room, one lower sheave, wherein top sheave is traction sheave and directive wheel, lower sheave is alternate brake wheel, directive wheel is arranged on alternate brake wheel top and separates with traction sheave, installation site makes cab not rub mutually with to when focusing on the relative motion done up and down reciprocatingly, hoist ropes one end is fixed on hoistway top, the other end returns rope sheave bottom from cab and passes around, and from traction sheave top, alternate brake wheel bottom, directive wheel top and counterweight diversion sheave bottom passed around, be fixedly connected on rope hitch plate；
Traction machine, including traction sheave, for providing traction for cab so that cab with to focusing on the relative motion done in hoistway up and down reciprocatingly, and when traction machine is in off working state, be braked by the brake of traction machine；
Wheel speed sensors, is installed on alternate brake wheel, for detecting the translational speed of car；
Control unit, is used for judging that whether traction machine is in running order, when judging that described traction machine is in running order, whether continues the translational speed judging described car more than normal speed threshold value；When the translational speed of the described car of judgement is more than normal speed threshold value, the brake of instruction alternate brake wheel is braked；When judging that described traction machine is in off working state, whether continue the translational speed judging described car more than zero；When the translational speed of the described car of judgement is more than zero, the brake of instruction alternate brake wheel is braked。
Alternate brake is taken turns, and for when receiving the braking instruction that control unit sends, the brake taken turns by alternate brake is braked。
Wherein, above-mentioned traction sheave, alternate brake wheel and directive wheel are three fixed pulleys, and hoist ropes two ends can be directly connected to counterweight and car, it is possible to connected counterweight and car by movable pulley。
It is also preferred that the left the installation site that traction sheave and alternate brake are taken turns makes the cornerite of traction sheave be more than or equal to 180 degree and less than 220 degree。Wherein, when alternate brake wheel is positioned at immediately below traction sheave, the cornerite of traction sheave can reach 220 degree, can reduce traction sheave and sedan-chair top is returned the diameter of rope sheave and added contact area, traction increases, and can be selected for the traction sheave that diameter is less, further can reduce the headroom height installing traction machine。
Wheel speed sensors is magneto-electric type wheel speed sensor or Hall wheel speed sensor。
Based on same inventive concept, according to the monitoring brakes for traction elevator that this utility model above-described embodiment provides, correspondingly, another embodiment of this utility model additionally provides the monitoring braking method for traction elevator, the flow chart of method is as it is shown on figure 3, specifically include:
Step 300: the translational speed of the alternate brake wheel wheel speed sensors detection car by being arranged on described alternate brake wheel, and whether detect traction machine in running order。If so, step 310 is then performed；Otherwise, step 320 is performed。
Step 310: judge that whether the translational speed of described car is more than normal speed threshold value；If so, step 330 is then performed；Otherwise, step 340 is performed。
Step 320: judge that whether the translational speed of described car is more than zero；If so, step 330 is then performed；Otherwise, step 340 is performed。
Step 330: the brake taken turns by alternate brake is braked。
Step 340: the brake of alternate brake wheel is failure to actuate。
This set brakes is independent, and the brake of alternate brake wheel is also independent, it is achieved active and standby brakes。The wheel speed sensors installed additional on available backup braked wheel when elevator stops tests the speed, the theoretical velocity that elevator stops should be zero, if now elevator braking system faults, the brake of alternate brake wheel can stop elevator at once so that lift car does not move or a mobile only small segment distance；Wheel speed sensors device detection speed can be used when the elevator is run, now elevator car speed is rated speed of lift, if now elevator fault, such as encoder fault, frequency converter failure etc., or velocity anomaly, the brake can taken turns by alternate brake carrys out elevator brake。This system supplementing as up-running over-speed protection and limiter of speed, it is achieved dual fail-safe, and the precision of this device is higher than up-running over-speed protection and limiter of speed。This monitoring brakes should be switched on normally opened, power-off, fault stop, normal condition not with braked wheel friction, be also just absent from many less wears。Accordingly even when be the band-type brake of traction machine old be negligent of safeguarding also can guarantee that safety。
Obviously, this utility model can be carried out various change and modification without deviating from spirit and scope of the present utility model by those skilled in the art。So, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification。
Claims (2)
1. the monitoring brakes for traction elevator, it is characterised in that the described monitoring brakes for traction elevator includes:
Two top sheaves are installed in machine room, one lower sheave, wherein top sheave is traction sheave and directive wheel, lower sheave is alternate brake wheel, directive wheel is arranged on alternate brake wheel top and separates with traction sheave, installation site makes cab not rub mutually with to when focusing on the relative motion done up and down reciprocatingly, hoist ropes one end is fixed on hoistway top, the other end returns rope sheave bottom from cab and passes around, and from traction sheave top, alternate brake wheel bottom, the diversion sheave bottom of directive wheel top and counterweight passed around, it is fixedly connected on rope hitch plate, wherein, the installation site that traction sheave is taken turns with alternate brake makes the cornerite of traction sheave be more than or equal to 180 degree and less than 220 degree；
Traction machine, including traction sheave, for providing traction for cab so that cab with to focusing on the relative motion done in hoistway up and down reciprocatingly, and when traction machine is in off working state, be braked by the brake of traction machine；
Wheel speed sensors, is installed on alternate brake wheel, for detecting the translational speed of car；
Control unit, is used for judging that whether traction machine is in running order, when judging that described traction machine is in running order, whether continues the translational speed judging described car more than normal speed threshold value；When the translational speed of the described car of judgement is more than normal speed threshold value, the brake of instruction alternate brake wheel is braked；When judging that described traction machine is in off working state, whether continue the translational speed judging described car more than zero；When the translational speed of the described car of judgement is more than zero, the brake of instruction alternate brake wheel is braked；
Alternate brake is taken turns, and for when receiving the braking instruction that control unit sends, the brake taken turns by alternate brake is braked。
2. the monitoring brakes for traction elevator as claimed in claim 1, it is characterised in that wheel speed sensors is magneto-electric type wheel speed sensor or Hall wheel speed sensor。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032805.9U CN205328398U (en) | 2016-01-14 | 2016-01-14 | A control braking system for towing formula elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032805.9U CN205328398U (en) | 2016-01-14 | 2016-01-14 | A control braking system for towing formula elevator |
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| Publication Number | Publication Date |
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| CN205328398U true CN205328398U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620032805.9U Active CN205328398U (en) | 2016-01-14 | 2016-01-14 | A control braking system for towing formula elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340565A (en) * | 2020-11-25 | 2021-02-09 | 南京博寰机电设备有限公司 | Elevator maintenance transmission device based on Internet of things |
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2016
- 2016-01-14 CN CN201620032805.9U patent/CN205328398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340565A (en) * | 2020-11-25 | 2021-02-09 | 南京博寰机电设备有限公司 | Elevator maintenance transmission device based on Internet of things |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200709 Address after: Room 301, building 28, Caiqiao new village, Shapotou District, Zhongwei City, Ningxia Hui Autonomous Region Patentee after: Ningxia Jie Neng Elevator Co.,Ltd. Address before: Wenchang Cai Qiao Cun town Shapotou district the Ningxia Hui Autonomous Region city centre 755000 No. 79 3 Patentee before: Zhang Ming |