CN201942381U - Speed limiter with electromagnets and built-in photoelectric encoder - Google Patents
Speed limiter with electromagnets and built-in photoelectric encoder Download PDFInfo
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- CN201942381U CN201942381U CN2011200333548U CN201120033354U CN201942381U CN 201942381 U CN201942381 U CN 201942381U CN 2011200333548 U CN2011200333548 U CN 2011200333548U CN 201120033354 U CN201120033354 U CN 201120033354U CN 201942381 U CN201942381 U CN 201942381U
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- electromagnet
- photoelectric encoder
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Abstract
A speed limiter provided with electromagnets and a built-in photoelectric encoder solves the problems in a conventional speed limiter that the speed control of actions is delayed, the electromagnets are easy to be damaged, the braking is unreliable and so on, and comprises a left bracket, a right bracket, a rope pulley shaft, a driving disc, a brake wheel, a rope pulley, the photoelectric encoder and the electromagnets, wherein, the left bracket and the right bracket are provided with a left support seat and a right support seat. The speed limiter adopts the technical key points as follows: the built-in photoelectric encoder is connected with one end of the rope pulley shaft in a coaxial manner; the brake wheel that is directly fixed on the rope pulley shaft is fixedly connected with the rope pulley; an odd number of lug bosses that are distributed in the circumferential direction are formed on the edge of the end surface of a brake disc arranged at one end of the brake wheel; the electromagnets are symmetrically fixed on both sides of the driving disc in parallel in the axial direction; in addition, contact terminals are stretched out when the electromagnets are powered off, and the whole or part of at least one of the contact terminals enters into a part among the lug bosses of the brake disc. The speed limiter has the advantages of reasonable and compact structural design as well as accurate, rapid and reliable brake control, achieves real-time monitoring on the running speed of an elevator, and improves the braking effect and the safe reliability of the elevator remarkably.
Description
Technical field
The utility model relates to a kind ofly controls elevator downward or upward or the safety guard of way traffic, and particularly a kind of running velocity to elevator is the velocity limiter that has electromagnet and built-in photoelectric encoder of monitoring in real time.
Background technology
Velocity limiter is as the main safety component of control elevator speed, and the reliability of its action and safety are the principal elements that concerns elevator safety operation.Existing velocity limiter, its principle of design is: when descending overspeed took place elevator, the velocity limiter electric switch moved rapidly, disconnected electric control loop; If hypervelocity further strengthens, the action of velocity limiter physical construction, the safety tongs shift mechanism that links to each other with speed limiter wire rope lifts safety tongs, makes safety tongs tightly embrace guide rail, realizes the rapid stop of elevator, avoids the generation of accident.Its major defect is: under the situation of elevator traction machine lock torque deficiency, if just in time be in the elevator door opening state this moment, the moment of passenger turnover elevator, the elevator car of sauntering, the control hysteresis of governor tripping speed needs very long coasting distance and time at this moment, just can reach the responsiveness that velocity limiter is set, force the elevator safety gear action, realize stopping of elevator.Therefore, velocity limiter can not in time move during elevator overspeed, serious shearing or extruding passenger's phenomenon will occur, produces very serious consequence.In 200811109031.5, disclosed " a kind of speed that has the servo triggering structure of electron steering-acceleration monitoring unit that is used for feedway ".The application force that this bidirectional speed limiter produces by electromagnet be main shaft diameter to application force, drive driver plate with this, thereby make slipper produce the purpose that radial effect power reaches the braking rope sheave.There is following defective in this limiting device: the electromagnet radial effect takes up space greatly, and electromagnet can not well be protected in installation and transportation, and is fragile; The mounting means of coder is external, and it is bigger to take axial dimension.In addition, because of the braking roller in its brake structure is not rigidly connected with axle, but adopted the platen of built-in friction lining form and spring to clamp, attempt to overcome because of brake wheel produces excessive application force and make the rope sheave rotation with it, produce the phenomenon that steel rope skids on rope sheave, but because of difficulty relatively aspect the axial force of this structure debugging friction lining when installing or safeguarding, so can't ensure and brake roller due lock torque when locked, can not action message, influence braking effect.Therefore, for guaranteeing the safety of elevator operation, the existing velocity limiter of reply is further improved.
The utility model content
The purpose of this utility model provides a kind of velocity limiter that has electromagnet and built-in photoelectric encoder, it has solved outer installation of responsiveness control hysteresis, coder that existing velocity limiter exists and has taken that axial dimension is big, electromagnet is fragile and brake problems such as unreliable, its reasonable in design, compactness, control of braking accurately, fast, reliably, realized the running velocity of elevator is monitored in real time, significantly improved the safe reliability of braking effect and elevator operation.
The technical scheme that the utility model adopted is: this velocity limiter that has electromagnet and built-in photoelectric encoder comprises respectively and a left side, a right supporting seat bonded assembly left side, right support, be assembled in a described left side, sheave shaft on the right supporting seat and utilize the retracing spring tensioning to be sleeved on the drive plate of right supporting seat periphery, be assembled in the brake wheel on the described sheave shaft, rope sheave and photoelectric encoder, and the electromagnet that is fixed on described drive plate, its technical essential is: at the built-in described photoelectric encoder of the coaxial connection of an end of described sheave shaft, the brake wheel and the rope sheave that directly are fixed on the described sheave shaft are fixed together, one end of described brake wheel is provided with brake disc, the end surface side of described brake disc is along the odd number boss that circumferential distribution is set, the periphery annular knurl face of described brake disc is adjacent with the periphery that is fixed on the eccentric slipper on the right support, and the drive link that will be fixed on the described eccentric slipper that has eccentric orfice inserts on the described drive plate, make described drive plate under the tensile force effect of described retracing spring, keep non-brake compensation position, described electromagnet symmetry is fixed on described drive plate both sides, and make two described electromagnet axially with the axially parallel of described drive plate, the contact that described electromagnet stretches out when cutting off the power supply has at least all or part of of a contact to enter between the described brake disc boss.
The described eccentric slipper that is fixed on the right support is assembled in an end of adapter shaft by bearing carrier ring, and the other end of described adapter shaft is fixed on the right support.
The other end of the described retracing spring of the described drive plate of tensioning is hinged on the stay column that is fixed in right support.
Described left and right support links together by six prismatic connecting rods and base respectively.
Advantage and good effect that velocity limiter of the present utility model has are: the utility model is owing to adopt built-in photoelectric encoder to carry out the velocity feedback of velocity limiter, dwindled axial installation dimension greatly, electromagnet adopts the mode of parallel axes to be connected with drive plate, the application force of electromagnet is consistent with the direction of sheave shaft, between all or part of brake disc boss that enters brake wheel that has a contact that stretches out after the electromagnet outage action at least, realize the control of the mechanical action speed of velocity limiter, so its reasonable in design, compact, control of braking is accurate, fast, reliably, realized the running velocity of elevator is monitored in real time.Because of no matter the utility model elevator is at quiescence or normal operating condition and abnormal running state; all can realize real-time monitoring to the running velocity of elevator; so not only significantly improve the safe reliability of braking effect and elevator operation; responsiveness control hysteresis, coder that existing velocity limiter exists are outer installs that to take axial dimension big but also solved; in installation and transportation, can not well be protected the fragile and braking problem such as unreliable of electromagnet.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the front elevation of velocity limiter described in the utility model;
Fig. 2 is the A-A cutaway view of velocity limiter described in the utility model;
Fig. 3 is the birds-eye view of velocity limiter described in the utility model.
Sequence number explanation among the figure: 1 photoelectric encoder, 2 right supporting seats, 3 right supports, 4 adapter shafts, 5 bearing carrier rings, 6 eccentric slipper, 7 connecting rods, 8 rope sheaves, 9 drive links, 10 brake wheels, 11 left supporting seats, 12 sheave shafts, 13 left socles, 14 control capsulees, 15 drive plates, 16 retracing springs, 17 stay columns, 18 bases, 19 electromagnet.
The specific embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～3.This velocity limiter that has electromagnet and built-in photoelectric encoder comprises respectively and left supporting seat 11, right supporting seat 2 bonded assembly left socles 13, right support 3, be assembled in the sheave shaft 12 on the left and right supporting seat 11,2 and utilize retracing spring 16 tensionings to be sleeved on the drive plate 15 of right supporting seat 2 peripheries, be assembled in brake wheel 10, rope sheave 8 and photoelectric encoder 1 on the sheave shaft 12, and the parts such as electromagnet 19 that are fixed on drive plate 15.Wherein the end at sheave shaft 12 is coaxially connected with built-in photoelectric encoder 1.Utilization is connected and fixed the brake wheel 10 that part directly is fixed on the sheave shaft 12 and is fixed together with rope sheave 8.One end of brake wheel 10 is provided with brake disc, the end surface side of brake disc is along the odd number boss that circumferential distribution is set, the periphery annular knurl face of brake disc is adjacent with the periphery that is fixed on the eccentric slipper 6 on the right support 3, and the drive link 9 that will be fixed on the eccentric slipper 6 that has eccentric orfice inserts on the drive plates 15, makes drive plate 15 keep non-brake compensation position under the tensile force effect of retracing spring 16.Electromagnet 19 symmetries are fixed on the both sides of drive plate 15, and the axially parallel of the axial and drive plate 15 of two electromagnet 19 is arranged.The contact that stretches out when electromagnet 19 outages has at least all or part of of a contact to enter between the brake disc boss.For eccentric slipper 6 can be rotated smoothly around adapter shaft 4, the eccentric slipper 6 that is fixed on the right support 3 is assembled in an end of adapter shaft 4 by bearing carrier ring 5, and the other end of adapter shaft 3 is fixed on the right support 3.Drive plate 15 is by two retracing springs 16 and the about 30 ° position tensioning in center vertical plane inclination angle, guaranteed drive plate 15 balance after stressed.The other end of retracing spring 16 is hinged by the stay column 16 that is fixed on the right support 3.For the ease of installation and maintenance, left socle 13, right support 3 link together by six prismatic connecting rods 7, base 18, constitute the support of this velocity limiter.In the outside of left socle 13 control capsule 14 is installed.
Working process of the present utility model is: velocity limiter is installed in machine room or the hoistway by support, and speed limiter wire rope is by the expansion tightening wheel tension that is located at well pit, makes the certain friction force of generation between the grooving of speed limiter wire rope and governor sheave 8.Speed limiter wire rope links to each other with the safety tongs pull bar that is installed in the lift car side.Built-in photoelectric encoder 1 can rotate together with sheave shaft 12, and can the running velocity of velocity limiter be fed back.When elevator stops, electromagnet 19 outages on the velocity limiter, the contact that electromagnet 19 stretches out has at least between all or part of brake disc boss that enters on the brake wheel 10 of a contact, the brake disc boss closed contact on another one contact and the brake wheel 10.At this moment, if if there is any fault input signal to make the elevator operation (as the chain short circuit of hoistway door, under the situation that elevator still can move; Elevator traction machine lock torque deficiency is opened the door when slipping car), because of impelling the speed limiter wire rope that is connected with elevator, speed limiter wire rope and friction force between the rope sheave 8 drive rope sheave 8 rotations, brake wheel 10 and 8 coaxial connections of rope sheave, brake wheel 10 is followed rope sheave 8 rotations, brake disc boss on the brake wheel 10 can drive electromagnet 19 and follow brake wheel 10 rotations, because of electromagnet 19 is connected with drive plate 15 integral body, drive plate 15 can be followed rotation like this, drive plate 15 overcomes retracing spring 16 application forces and rotates, utilize the principle of gear mesh on drive plate 15 and the eccentric slipper 6 between the bonded assembly drive link 9, drive and eccentric slipper 6 rotations of drive link 9 bonded assemblys by drive plate 15, because of eccentric slipper 6 eccentric designs, the energy of rotation of eccentric slipper 6 well produces a pair of plugging couple, impel drive plate 15 to stop wider rotation, brake wheel 10 just shuts down like this, rope sheave 8 also can shut down, the speed limiter wire rope overcome friction lifts the safety tongs pull bar, the safety catch action makes elevator out of service.When operation need reset, electromagnet 19 energisings, the withdrawal of electromagnet contact, the inverted running elevator, rope sheave 8 rotates under the effect of speed limiter wire rope, and drive plate 15 recovers initial position under the effect of retracing spring 16, and eccentric slipper 6 also restPoses under the drive of drive plate 15.
Large and small two kinds of groovings are arranged on the rope sheave 8, and the grooving opening angle is through particular design, stablized brake wheel due lock torque when locked.Use big grooving during the normal elevator operation, when elevator need carry out the safety arrestment check with less speed, only need speed limiter wire rope is cross on the little grooving, like this, elevator operates in can make safety catch action under the state that is lower than command speed, avoided the injury to cage guide of big system's kinetic energy.
When elevator normally moves, after all safety return circuit signal detection are normal, to 19 energisings of the electromagnet on the velocity limiter, the withdrawal of electromagnet 19 contacts, car drives rope sheave 8 rotations, electromagnet 19, drive plate 15, eccentric slipper 6, and retracing spring 16 remains static.The elevator operation stops, and electromagnet 19 outages between all or part of brake disc boss that enters on the brake wheel 10 of arbitrary contact of electromagnet 19, are waited for the instruction that next time moves electric signal.
Claims (4)
1. velocity limiter that has electromagnet and built-in photoelectric encoder, comprise respectively and a left side, a right supporting seat bonded assembly left side, right support, be assembled in a described left side, sheave shaft on the right supporting seat and utilize the retracing spring tensioning to be sleeved on the drive plate of right supporting seat periphery, be assembled in the brake wheel on the described sheave shaft, rope sheave and photoelectric encoder, and the electromagnet that is fixed on described drive plate, it is characterized in that: at the built-in described photoelectric encoder of the coaxial connection of an end of described sheave shaft, the brake wheel and the rope sheave that directly are fixed on the described sheave shaft are fixed together, one end of described brake wheel is provided with brake disc, the end surface side of described brake disc is along the odd number boss that circumferential distribution is set, the periphery annular knurl face of described brake disc is adjacent with the periphery that is fixed on the eccentric slipper on the right support, and the drive link that will be fixed on the described eccentric slipper that has eccentric orfice inserts on the described drive plate, make described drive plate under the tensile force effect of described retracing spring, keep non-brake compensation position, described electromagnet symmetry is fixed on described drive plate both sides, and make two described electromagnet axially with the axially parallel of described drive plate, the contact that described electromagnet stretches out when cutting off the power supply has at least all or part of of a contact to enter between the described brake disc boss.
2. according to the described velocity limiter that has electromagnet and built-in photoelectric encoder of claim 1, it is characterized in that: the described eccentric slipper that is fixed on the right support is assembled in an end of adapter shaft by bearing carrier ring, and the other end of described adapter shaft is fixed on the right support.
3. according to the described velocity limiter that has electromagnet and built-in photoelectric encoder of claim 1, it is characterized in that: the other end of the described retracing spring of the described drive plate of tensioning is hinged on the stay column that is fixed in right support.
4. according to the described velocity limiter that has electromagnet and built-in photoelectric encoder of claim 1, it is characterized in that: described left and right support links together by six prismatic connecting rods and base respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200333548U CN201942381U (en) | 2011-01-31 | 2011-01-31 | Speed limiter with electromagnets and built-in photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200333548U CN201942381U (en) | 2011-01-31 | 2011-01-31 | Speed limiter with electromagnets and built-in photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942381U true CN201942381U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200333548U Expired - Lifetime CN201942381U (en) | 2011-01-31 | 2011-01-31 | Speed limiter with electromagnets and built-in photoelectric encoder |
Country Status (1)
| Country | Link |
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| CN (1) | CN201942381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070056A (en) * | 2011-01-31 | 2011-05-25 | 沈阳博林特电梯股份有限公司 | Speed limiter with electromagnet and built-in photoelectric encoder |
-
2011
- 2011-01-31 CN CN2011200333548U patent/CN201942381U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070056A (en) * | 2011-01-31 | 2011-05-25 | 沈阳博林特电梯股份有限公司 | Speed limiter with electromagnet and built-in photoelectric encoder |
| CN102070056B (en) * | 2011-01-31 | 2012-10-03 | 沈阳博林特电梯股份有限公司 | Speed limiter with electromagnet and built-in photoelectric encoder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 110027 Shenyang economic and Technological Development Zone, Liaoning Road, No. 27 Patentee after: Shenyang Brilliant Elevator Co., Ltd. Address before: 110027, No. 27, No. sixteen, great road, Shenyang economic and Technological Development Zone, Liaoning Patentee before: Shenyang Brilliant Elevator Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110824 Effective date of abandoning: 20121003 |