CN100581971C - Wireless speed limiting system of elevator - Google Patents
Wireless speed limiting system of elevator Download PDFInfo
- Publication number
- CN100581971C CN100581971C CN200610123346A CN200610123346A CN100581971C CN 100581971 C CN100581971 C CN 100581971C CN 200610123346 A CN200610123346 A CN 200610123346A CN 200610123346 A CN200610123346 A CN 200610123346A CN 100581971 C CN100581971 C CN 100581971C
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- roller
- car
- guide rail
- control lever
- brake control
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Abstract
The invention discloses a cordless speed limit system of an elevator. The cordless speed limit system comprises a roller, a motion transferring mechanism and a speed limiter. The roller is connected with an elevator car or a counterweight housing, the surface of the roller closely adheres to a car guide rail or the surface of a counterweight housing guide rail, the roller is connected with the speed limiter through the motion transferring mechanism, when the roller vertically moves with the elevator car or the counterweight housing, the roller rolls with the frictional force generated between the roller and the car guide rail or the counterweight housing guide rail, the motion is transferred to the speed limiter through the motion transferring mechanism, thereby the collection of elevator car motion speed signals is realized, and the driving force is provided for a car safety device. The invention adopts the frictional force generated between the roller and the car guide rail or the counterweight housing guide rail to provide speed signals for the rolling roller and the driving force for the car safety device when the roller moves with the car or the counterweight housing, greatly simplifies the structure, and reduces the manufacturing cost; the whole speed limit system can be installed on the car or the counterweight housing, the space occupied is small, the maintenance is simple and convenient, and the daily maintenance cost is reduced.
Description
1, technical field:
The present invention relates to a kind of wireless speed limiting system of elevator, relate in particular to a kind of employing and on elevator cage guide rail or counterweight frame guide rail, make the elevator cage wireless speed limiting system that the driving rolls of pure rolling provides speed signal and cab safety device driving power.
2, background technology:
The principle of work of traditional elevator cage speed limiting system as shown in Figure 1, the overspeed preventer device that tradition is used in the elevator industry is generally by being installed in the governor sheave H in the machine room and testing the speed and actuator devices, be installed in governor tension pulley device F in the hoistway melt pit, vertically constitute through the velocity limiter steel cable G of hoistway total length etc.Velocity limiter steel cable G is wrapped between rope sheave H and the tensioner apparatus F and forms the sealing winding, the rope socket place of velocity limiter steel cable G is fastened on the safety device shadoof that is installed on the cab A, said apparatus together turns round with elevator cage A all the time and must be an independent special-purpose system, elevator cage A connects dragged wire-rope D one end, the other end of dragged wire-rope D connects counterweight frame J, counterweight frame J moves up and down along counterweight frame guide rail I, dragged wire-rope D is by towing machine B traction, and dragged wire-rope D is enclosed within on the hanging wheel C.When the elevator normal operation, this steel cable G and car A are together reciprocating, rope sheave H and tension wheel F are all the time in running, when elevator faults causes car A along the upper and lower operation hypervelocity of guide rail E (even dragged wire-rope D fracture cab A falls), cab A is by dragging velocity limiter steel cable G and driving rope sheave H, tension wheel F overspeed operation, the velocity measurement mechanisms (mostly being the centrifugal fly-weight structure) that is installed on the governor sheave H is triggered, at first cut off the towing machine B-source by electric-control system, towing machine B main shaft brake sticking brake forces car out of service by steel cable D; If electric-control system is failed effectively with car stop (or dragged wire-rope D fracture cab A falls); car continues to move with overspeed condition; velocity measurement mechanisms on the governor sheave H continues action; trigger velocity limiter steel cable clamping mechanism; make the clamped stop of velocity limiter steel cable G; so velocity limiter steel cable G be connected and be installed in that relative position changes between the safety device shadoof on the car A; the safety device shadoof is pulled; drive safety device and clamp car guide rail E; safety device is triggered the back under self special wedge structure effect, realizes car A stop or is decelerated within the safety speed that standard allows.
The shortcoming of above-mentioned velocity limiter is: along with the increase of story height, lifting height of lift prolongs, speed limiter wire rope is extended thereupon, elevator manufacturing, maintenance and operating cost have not only been increased, and, increased the noise of elevator operation because of the amplitude of fluctuation increase of steel rope has also aggravated the wearing and tearing of steel rope, rope sheave etc., also reduced the reliability of velocity limiter, because the elastic deformation of steel rope causes its action response time to prolong, increased elevator reparing care work amount simultaneously simultaneously.
3, summary of the invention:
The wireless speed limiting system that the purpose of this invention is to provide a kind of elevator, when utilizing roller to move up and down with lift car or counterweight frame, the friction force that produces between roller and car guide rail or the counterweight frame guide rail rolls roller provides speed signal and cab safety device to drive power, simplify the structure greatly, realized the uplink and downlink two-way speed limiting, effectively reduce elevator production, installation and operation cost, improved reliability.
The present invention is achieved by the following technical solution:
A kind of wireless speed limiting system of elevator, it comprises roller, movement transferring and velocity limiter are formed, roller is connected with lift car or counterweight frame, roller surface is adjacent on car guide rail or counterweight frame guide rail surface, be connected by movement transferring between roller and the velocity limiter, when roller moves up and down with lift car or counterweight frame, utilize the friction force that produces between roller and car guide rail or the counterweight frame guide rail that roller is rolled, give velocity limiter by movement transferring with this Motion Transmission, realize the collection of elevator cage running speed signal and the propulsive effort of cab safety device is provided.
Above-mentioned described velocity limiter is two-way wireless speed limiting device, this two-way wireless speed limiting device comprises support, axle, friction disc, follower disk, centrifugal detent mechanism, electric microswitch, brake control lever, axle is installed on the support, friction disc, follower disk is installed on the axle, centrifugal detent mechanism cooperates with electric microswitch on being installed in support, centrifugal detent mechanism is between friction disc and follower disk and be installed on the friction disc, centrifugal detent mechanism cooperates with ratchet slot on the follower disk, be located at the follower disk surface along on the circumference and several follower disk backing pins of well-distributed cooperate with brake control lever backing pin on the brake control lever, brake control lever is installed on the bearing pin of support, and the brake control lever both sides are connected with the cab safety device respectively to produce cab safety device propulsive effort.
Above-mentioned described roller and support are mounted on lift car or the counterweight frame.
Above-mentioned described movement transferring is a belt, friction disc and the coaxial rotation of belt pulley, and belt sleeve is on belt pulley and roller.
Above-mentioned described cab safety device can be the elevator cage safety tongs.
Above-mentioned described brake control lever both sides are separately installed with friction shoe, friction shoe and friction disc surface engagement, when brake control lever after the bearing pin of support was put certain angle, friction shoe bottom surface and friction disc surface fit tightly self-locking.
The present invention compared with prior art has following advantage: 1) cancel the parts such as governor sheave, tension wheel and velocity limiter steel cable that traditional velocity limiter generally uses, when utilizing roller to move up and down with car or counterweight frame, the friction force that produces between roller and car guide rail or the counterweight frame guide rail rolls roller provides speed signal and cab safety device to drive power, simplify the structure greatly, reduce manufacturing cost; 2) need not set up special-purpose hoistway melt pits such as governor sheave, tension wheel and velocity limiter steel cable are installed specially, further cut operating costs; 3) wireless speed limiting system of whole elevator can be installed on cab or the counterweight frame, and it is little to take up room, and convenience easy to maintenance reduces the daily attention cost; 4) two-way wireless speed limiting device has been realized the uplink and downlink two-way speed limiting, and it can produce bigger driving power and drive cab safety device, reliability height.
4, description of drawings:
Below in conjunction with accompanying drawing the present invention is done detailed explanation:
Fig. 1 is the fundamental diagram of traditional velocity limiter;
Fig. 2 is the fundamental diagram that the present invention is installed in elevator cage;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the B-B cutaway view of Fig. 4;
Fig. 6 is the location diagram of ratchet of the present invention and friction disc and follower disk;
Course diagram when Fig. 7 is brake control lever of the present invention swing.
5, the specific embodiment:
As shown in Figure 2, the present invention includes roller 1, movement transferring 2 and velocity limiter 3 are formed, roller 1 is connected with lift car 4 or counterweight frame, roller 1 surface is adjacent on car guide rail 5 or counterweight frame guide rail surface, be connected by movement transferring 2 between roller 1 and the velocity limiter 3, when roller 1 moves up and down with lift car 4 or counterweight frame, utilize the friction force that produces between roller 1 and car guide rail 5 or the counterweight frame guide rail that roller 1 is rolled, give velocity limiter 3 by movement transferring 2 with this Motion Transmission, realize the collection of elevator cage 4 running speed signals and the propulsive effort of cab safety device is provided.Movement transferring can be toothed belt 2.Roller 1 and velocity limiter 3 are mounted on the car 4.
As Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, velocity limiter 3 is two-way wireless speed limiting devices, this two-way wireless speed limiting device comprises support 6, axle 7, friction disc 8, follower disk 9, centrifugal detent mechanism, electric microswitch 20, brake control lever 22, axle 7 is installed on the support 6, friction disc 8, follower disk 9 is installed on the axle 7, centrifugal detent mechanism cooperates with electric microswitch 20 on being installed in support 6, centrifugal detent mechanism is between friction disc 8 and follower disk 9 and be installed on the friction disc, centrifugal detent mechanism cooperates with ratchet slot 19 on the follower disk 9, be located at follower disk 9 surfaces along on the circumference and several follower disk backing pins 25 of well-distributed cooperate with brake control lever backing pin 24 on the brake control lever, brake control lever 22 is installed on the bearing pin 21 of support 6, and brake control lever 22 both sides are connected with the cab safety device respectively to produce cab safety device propulsive effort.
Centrifugal detent mechanism comprises two centrifugal 11, bearing pin 12, spring 13, locating dowel pin 14 and ratchet 15, the end of ratchet 15 is provided with top flat 16, two centrifugal 11 tops are installed on the friction disc 8 by bearing pin 12, two centrifugal 11 bottom spring 13 connections and spacing by the locating dowel pin on the friction disc 8 14.Ratchet 15 is installed in the outside, two centrifugal 11 middle parts, the end of ratchet 15 is provided with top flat 16, in the slit 17 of top flat 16 between friction disc 8 and follower disk 9,17 outside is provided with electric microswitch 20 in the slit, the switch contact of electric microswitch 20 extend in the slit 17 and keeps certain distance with top flat 16, when lift car 4 overspeeds, change outward around bearing pin 12 for two centrifugal 11, the top flat 16 of ratchet 15 17 stretches out and starts electric microswitch 20 from the slit on centrifugal 11, cut off the elevator traction machine power supply, towing machine main shaft brake sticking brake makes car out of service by steel cable.The ratchet 15 at top flat 16 rears is positioned at cavity 18 the insides of follower disk 9, and the inwall of cavity 18 is provided with a plurality of ratchet slots 19, and ratchet 15 can cooperate with ratchet slot 19.
A friction shoe 26 is respectively installed in brake control lever 22 both sides, friction shoe 26 is loaded on by set pin 27 and is opened on the brake control lever 22, set pin 27 is inserted in the pin runner 28 of friction shoe 26 both sides, and it can rotate and move up and down along pin runner 28 around set pin 27 to make friction shoe 26; Being installed in spacing screw rod 29 afterbodys on the brake control lever 22 is inserted in the arc circular groove 30 of friction shoe 26 and with bottom land and keeps the gap, holddown spring 31, spring perch 32 are enclosed within on the spacing screw rod 29, spring perch 32 is pressed on pin runner 28 bottoms with friction shoe 26, friction shoe 26 keeps the gap with the friction disc external peripheral surface under normal condition, brake control lever 22 is symmetrical structure with the velocity limiter line of centers.Each hinged elevator car safety pull bar 33 of the both sides of brake control lever 22.
Working process of the present invention is:
Elevator moves under normal speed: when roller 1 moves up and down with lift car 4, utilize the friction force that produces between roller 1 and the car guide rail 5 that roller 1 is rolled, by belt 2, synchronous pulley 101 and synchronous pulley 10 are given this Motion Transmission the friction disc 8 of velocity limiter 3, friction disc 8 is rotated around axle 7, two centrifugal 11 bottoms can not overcome spring 13 pulling force and open outward, the top flat 16 of ratchet 15 does not contact with the electric microswitch 20 that stretches into slit 17 on centrifugal 11, ratchet 15 is not embedded into ratchet slot 19 the insides yet, therefore follower disk 9 does not rotate, and elevator car safety is not activated.
When hypervelocity appears in the elevator cage operation, suppose the up appearance of car hypervelocity but do not reach 115% o'clock of command speed as yet, two centrifugal 11 bottoms overcome spring 13 pulling force and open certain distance outward, the top flat 16 of ratchet 15 stretches out when bumping on electric microswitch 20 on centrifugal 11 from slit 17, just cut off the elevator traction machine power supply, towing machine main shaft brake sticking brake makes car out of service by dragged wire-rope.At this moment, two centrifugal 11 are not opened fully, and ratchet 15 is not embedded into ratchet slot 19 the insides yet, so follower disk 9 does not rotate.
As shown in Figure 7, when speed reaches more than 115% or during regulation numerical value of rated speed of lift (for example at lift car under the open circuited situation of dragged wire-rope), cut off the elevator traction machine power supply and can not brake car when out of service, open fully for two centrifugal 11, ratchet 15 is embedded into ratchet slot 19 the insides, therefore follower disk 9 begins to rotate, follower disk backing pin 25 produces bump at D point place with the brake control lever backing pin 24 that is loaded on the brake control lever 22, stirs brake control lever 22 simultaneously and leaves the A point around the bearing pin 21 (being F point among Fig. 7) of support 6 and swing to the right; Because this moment, friction wheel 8 still was driven roller 1 by synchronous belt 2 drivings, follower disk 9 rotates synchronously with friction disc 8, friction shoe 26 continues to be pushed swing to the right, at first eliminate with the gap of friction disc 8 outer circumference surfaces and fit tightly, the bearing pin 21 swing certain angles arrival B points that this moment, brake control lever 22 order around F with friction shoe 26; Follower disk backing pin 25 drives brake control lever backing pins 24 when F point continues to be rocked to E point, and two backing pins separate, at this moment piece number brake control lever 22 drive friction shoes 26 around F spot wobble angle to the G point; Friction shoe 26 is pushed at the outer circumference surface of friction disc 8 in the F spot wobble, compression holddown spring 31, driving set pin 27 moves along pin runner 28, can't break away from automatically because of be in self-locking state between G point friction shoe 26 and friction disc 8, friction shoe is driven by piece number 1 friction disc and continues right pendulum; Friction shoe 26 is pushed by the outer circumference surface of piece number 1 friction disc in continuing right pendulum process, further compress holddown spring 31, driving set pin 27 moves along pin runner 28, make the spacing screw rod 29 of friction shoe contact dieback with friction shoe 26, this moment, brake control lever continued to arrive the C point and keep this position (end position) around F spot wobble angle.Brake control lever 26 (left side arm) at the A point to the oscillating stroke between the C point, produce a stroke and a power by the safety device pull bar 33 that is loaded on respectively on the brake control lever 22 greater than 300N, force to drive the car safety device action, safety device moves immediately and clamps car guide rail, makes the car stop.S1 is that brake control lever backing pin 24 is routes of making circular movement around bearing pin 21 (being F point among Fig. 7) among Fig. 7, and S2 is follower disk backing pin 25 is made circular movement around axle 7 a route; S3 is the moving line of friction shoe 26.
Velocity limiter action and drive safety device behind elevator hoistways, are finished the work of rescue and trouble-shooting with the elevator cage stop subsequently.In the time will implementing to reset to velocity limiter, need only promote counterweight frame, make the car backward going, then piece number driving rolls 1 is by being with 2 to drive friction disc 8 counter-rotatings synchronously, self-locking between 26 pairs of friction discs 8 of friction shoe is disengaged, brake control lever 22 returns to center position under the effect of brake control lever retracing spring 23, realize automatically reseting of velocity limiter.
Be that example is introduced only in this specification sheets with the up hypervelocity of elevator cage, when the descending hypervelocity of cab, the velocity limiter direction of action, principle of work is identical.
Because elevator cage connects dragged wire-rope one end, the other end of dragged wire-rope connects counterweight frame, counterweight frame moves up and down along the counterweight frame guide rail, elevator cage is identical with the kinematic velocity of counterweight frame, sense of motion is opposite, therefore velocity limiter 3 can be installed on the counterweight frame, roller surface is adjacent on the counterweight frame guide rail surface, be connected by movement transferring between roller and the velocity limiter, when roller moves up and down with counterweight frame, utilize the friction force that produces between roller and the counterweight frame guide rail that roller is rolled, give velocity limiter by movement transferring with this Motion Transmission, can realize the collection of elevator cage running speed signal equally and the propulsive effort of cab safety device is provided.
Claims (2)
1, a kind of wireless speed limiting system of elevator, it comprises roller, movement transferring and velocity limiter, roller is connected with lift car or counterweight frame, roller surface is adjacent on car guide rail or counterweight frame guide rail surface, be connected by movement transferring between roller and the velocity limiter, when roller moves up and down with lift car or counterweight frame, utilize the friction force that produces between roller and car guide rail or the counterweight frame guide rail that roller is rolled, give velocity limiter by movement transferring with this Motion Transmission, realize the collection of elevator cage running speed signal and the propulsive effort of cab safety device is provided, velocity limiter is two-way wireless speed limiting device, this two-way wireless speed limiting device comprises support, axle, friction disc, follower disk, centrifugal detent mechanism, electric microswitch, brake control lever, axle is installed on the support, friction disc, follower disk is installed on the axle, centrifugal detent mechanism cooperates with electric microswitch on being installed in support, centrifugal detent mechanism is between friction disc and follower disk and be installed on the friction disc, centrifugal detent mechanism cooperates with ratchet slot on the follower disk, it is characterized in that: be located at the follower disk surface along on the circumference and several follower disk backing pins of well-distributed cooperate with brake control lever backing pin on the brake control lever, brake control lever is installed on the bearing pin of support, and the brake control lever both sides are connected with the cab safety device respectively to produce cab safety device propulsive effort.
2, the wireless speed limiting system of a kind of elevator according to claim 1, it is characterized in that: the brake control lever both sides are separately installed with friction shoe, friction shoe and friction disc surface engagement, when brake control lever after the bearing pin of support was put certain angle, friction shoe bottom surface and friction disc surface fit tightly self-locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610123346A CN100581971C (en) | 2006-10-31 | 2006-10-31 | Wireless speed limiting system of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610123346A CN100581971C (en) | 2006-10-31 | 2006-10-31 | Wireless speed limiting system of elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172553A CN101172553A (en) | 2008-05-07 |
| CN100581971C true CN100581971C (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610123346A Expired - Fee Related CN100581971C (en) | 2006-10-31 | 2006-10-31 | Wireless speed limiting system of elevator |
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| Country | Link |
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| CN (1) | CN100581971C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102387977B (en) * | 2009-04-09 | 2014-01-29 | 三菱电机株式会社 | Elevator governor |
| CN102514996A (en) * | 2011-12-30 | 2012-06-27 | 江南嘉捷电梯股份有限公司 | Elevator speed limiting device |
| CN104163372B (en) * | 2014-07-17 | 2016-08-24 | 东南电梯股份有限公司 | Super High elevator electrical and machinery double protection wireless speed limiting system and method |
| CN105197719A (en) * | 2014-08-13 | 2015-12-30 | 爱默生电梯有限公司 | Safety tongs and use method thereof |
| CN107673155B (en) * | 2016-08-02 | 2021-03-26 | 奥的斯电梯公司 | Speed limiter assembly and elevator |
| CN107500075B (en) * | 2017-08-18 | 2018-08-14 | 刘英辉 | A kind of Lift car type elevator speed-limiting device |
| CN110844737B (en) * | 2019-11-22 | 2024-04-26 | 宿州学院 | Elevator speed limiter |
| CN114261865B (en) * | 2021-12-31 | 2022-10-14 | 海南大学 | Speed-limiting braking protection device and application thereof in elevator |
| CN115893146B (en) * | 2022-10-17 | 2024-07-09 | 高宪立 | Elevator speed limiting device capable of switching two rated speeds at any time and elevator speed increasing method |
Citations (8)
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|---|---|---|---|---|
| US4662481A (en) * | 1986-03-14 | 1987-05-05 | Westinghouse Electric Corp. | Elevator system |
| US5052523A (en) * | 1991-02-14 | 1991-10-01 | Otis Elevator Company | Elevator car-mounted govenor system |
| US5377786A (en) * | 1991-06-13 | 1995-01-03 | Kabushiki Kaisha Toshiba | Elevator with a governor |
| CN2477593Y (en) * | 2001-05-25 | 2002-02-20 | 河北东方机械厂 | Two-way action speed limiter |
| CN2517716Y (en) * | 2001-11-23 | 2002-10-23 | 中国建筑科学研究院建筑机械化研究分院 | Wide area elevator governor |
| CN1489548A (en) * | 2001-12-11 | 2004-04-14 | 三菱电机株式会社 | elevator |
| CN2652898Y (en) * | 2003-07-22 | 2004-11-03 | 宁波欣达电梯配件厂 | General two-way speed limiter |
| CN2719802Y (en) * | 2004-07-22 | 2005-08-24 | 上海三菱电梯有限公司 | Two-way acting speed limiting device |
-
2006
- 2006-10-31 CN CN200610123346A patent/CN100581971C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4662481A (en) * | 1986-03-14 | 1987-05-05 | Westinghouse Electric Corp. | Elevator system |
| US5052523A (en) * | 1991-02-14 | 1991-10-01 | Otis Elevator Company | Elevator car-mounted govenor system |
| US5377786A (en) * | 1991-06-13 | 1995-01-03 | Kabushiki Kaisha Toshiba | Elevator with a governor |
| CN2477593Y (en) * | 2001-05-25 | 2002-02-20 | 河北东方机械厂 | Two-way action speed limiter |
| CN2517716Y (en) * | 2001-11-23 | 2002-10-23 | 中国建筑科学研究院建筑机械化研究分院 | Wide area elevator governor |
| CN1489548A (en) * | 2001-12-11 | 2004-04-14 | 三菱电机株式会社 | elevator |
| CN2652898Y (en) * | 2003-07-22 | 2004-11-03 | 宁波欣达电梯配件厂 | General two-way speed limiter |
| CN2719802Y (en) * | 2004-07-22 | 2005-08-24 | 上海三菱电梯有限公司 | Two-way acting speed limiting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101172553A (en) | 2008-05-07 |
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Granted publication date: 20100120 Termination date: 20111031 |