CN106744455B - A kind of elevator complemental brake system - Google Patents
A kind of elevator complemental brake system Download PDFInfo
- Publication number
- CN106744455B CN106744455B CN201611196230.5A CN201611196230A CN106744455B CN 106744455 B CN106744455 B CN 106744455B CN 201611196230 A CN201611196230 A CN 201611196230A CN 106744455 B CN106744455 B CN 106744455B
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- Prior art keywords
- brake
- elevator
- groove
- brake disc
- mounting plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of elevator complemental brake systems comprising auxiliary brake mechanism, brake disc and dc generator.The wherein described auxiliary brake mechanism, it is arranged on the stationary part of the host brake, it includes metal backup, mounting plate and electromagnet, the groove for being coupled with the metal backup is provided in the brake disc, the metal backup is mounted on the mounting plate, and can horizontally move, to be inserted into the groove or be detached from the groove.The idler wheel of the dc generator is rotated together with the brake disc, when the disc rotation, the dc generator work is in generating state, and the electric current exported gives the electromagnet so that the electromagnet generates the groove that metal backup described in electromagnetic attracting force is detached from the brake disc;When the brake disc stops, the dc generator is stopped, and the electromagnet powers off demagnetization, so that the metal backup is inserted into the groove of the brake disc, implements auxiliary brake function.
Description
Technical field
The present invention relates to elevator technology field, what is be especially directed to is a kind of for the auxiliary of supplemental lift main breaking zone device
Help brake apparatus.
Background technology
Existing elevator generally uses a host brake gear, even as normal stop elevator, urgent stop elevator
When car accidental movement, the brake apparatus of stop elevator.That is, the host brake gear that elevator uses is a variety of systems of collection
Dynamic function is.
There is the host brake gear of a variety of effects for this, its own can be because maintenance be improper, brakes
Disk accident viscous oil, and car slipping situation occurs.When situation is serious, personal injury accident is also resulted in.
In this regard, industry proposes two kinds of solutions.One is to host brake gear arrangement brake power self-test measurement of power
Can, prevent brake force failure or insufficient.Another is then to be additionally arranged auxiliary brake accordingly, to assist foundation brakes device
Braking operation.Common auxiliary brake, mostly uses folder steel wire rope or clipping Moving plate, and with host brake synchronization action.
But as described above, existing elevator is normally stopping terraced and abnormal urgent stop, foundation brakes device is still relied on
Complete, commonly using or can cause its brake pad wear.Simultaneously because brake acts on brake disc, when brake disc is unclean
After being especially infected with greasy dirt, brake force will be greatly reduced, even if having brake braking force self-checking function, can not also be ensured
In lucky misfunctioning of brake it is that can be detected go out, in addition, the human factors such as maintenance is improper cause car occur when elevator low speed
It moves in addition and causes the accident of passenger's injures and deaths more.
Further, for installing the scheme of auxiliary brake devices additional, since the auxiliary brake devices of installation are
It is more with rope brake, rail clamping device, and work asynchronously with host brake gear, itself require brake force and host brake
Almost the same, cost is relatively high, and, equally exist failure risk.
Therefore, it is necessory to develop a kind of novel elevator complemental brake system, to overcome defect in the prior art.
Invention content
The purpose of the present invention is to provide a kind of elevator complemental brake system, it is used in elevator stopping or low speed, it is auxiliary
The reliable stop elevator of host brake is helped, service life is long and reliability is high.
To achieve the goals above, the technical solution adopted by the present invention is as follows:
A kind of elevator complemental brake system comprising auxiliary brake mechanism, brake disc and dc generator.It is wherein described
Auxiliary brake mechanism is arranged on the stationary part of the host brake comprising metal backup, mounting plate and electromagnetism
Iron, the groove for being coupled with the metal backup is provided in the brake disc, and the metal backup is mounted on the installation
It on plate, and can horizontally move, to be inserted into the groove or be detached from the groove.The idler wheel of the dc generator is with institute
It states brake disc to rotate together, when the disc rotation, the dc generator work is in generating state, the electricity of output
It flows to the electromagnet so that the electromagnet generates the groove that metal backup described in electromagnetic attracting force is detached from the brake disc;
When the brake disc stops, the dc generator is stopped, and the electromagnet powers off demagnetization, so that the metal
Block is inserted into the groove of the brake disc, implements auxiliary brake function.
Further, in different embodiments, wherein the brake disc is disc-shaped structure, it is provided with two groups of grooves thereon
Group, the shape for the groove composition that every group of groove group includes form concentric circles arcuation with the brake disc.
Further, in different embodiments, wherein it is staggered between the groove of two groups of groove groups, it covers completely
Braking disk area where lid groove group.
Further, in different embodiments, wherein the overlap distance of two groups of grooves is more than the metal backup
Twice or more of diameter.
Further, in different embodiments, wherein the idler wheel of the dc generator, collinear with the brake disc
Speed rotates.
Further, in different embodiments, wherein the auxiliary brake mechanism further includes permanent magnet, the permanent magnet
Upper end is rigidly connected by the mounting plate upper bearing aperture and the metal backup, magnetic between the mounting plate to connect.
Further, in different embodiments, wherein the auxiliary brake mechanism further includes compressed spring, the permanent magnetism
The lower end of iron is connected with the compressed spring;The electromagnet is arranged in the other side of the compressed spring, the corresponding permanent magnetism
The position of iron.
Further, in different embodiments, further include displacement amplifying mechanism, connect the host brake
Action part and the mounting plate, for amplifying the horizontal displacement of host brakeage part to the installation
Plate pushes the mounting plate to realize the horizontal movement of displacement enlargement, and drives the horizontal movement of the metal backup in turn.
Further, in different embodiments, wherein the displacement amplifying mechanism includes band rotary shaft rack, holder, axis
It holds and the arm of force amplifies bar;The wherein described holder is used to be mounted on main machine base, and the band rotary shaft rack is arranged in the branch
On frame, one end links together with host brakeage part;Arm of force amplification bar by the bearing with
The band turns shaft support connection, and the arm of force amplification bar connects the mounting plate.
Further, in different embodiments, wherein the displacement amplifying mechanism includes detecting the host brake
Microswitch, holder, power supply and the control device and hydraulic driver of working condition;It is main described in the wherein described jogging switches measurement
Whether the action part of brake is in close contact with the brake disc, and state can be obtained by the power supply with control device
It takes, the power supply also controls the working condition of the hydraulic driver with control device, and described hydraulic driver one end passes through institute
Holder is stated with main machine base with being connected together, the other end is connect with the mounting plate.
Compared with the existing technology, the beneficial effects of the invention are as follows:A kind of elevator complemental brake system of the present invention,
Or relatively lag behind action synchronous with host brake, does not undertake main braking moment, the work only under elevator stopping or elevator fine motion
Make, effectively prevent slipping terraced risk caused by host misfunctioning of brake.
Further, elevator complemental brake system of the present invention, using cutting between simple metal backup and groove
Shear force undertakes the mass deviation of car and counterweight, it is only necessary to which the metal backup of small diameter can be realized, of low cost;Exist simultaneously
When elevator high speed emergency stop, present apparatus function stop, metal backup, which does not undertake the braking shearing force under large inertia, securely and reliably to be made
Use long lifespan.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for elevator complemental brake system that an embodiment of the present invention provides;
Fig. 2 is elevator complemental brake system shown in FIG. 1, the structural schematic diagram of brake disc;
Fig. 3 is a kind of structural representation for elevator complemental brake system that another embodiment of the present invention provides
Figure.
The reference numerals are as follows in Fig. 1~3:
Main machine base 1 is with rotary shaft rack 3
3 ' holder 4,4 ' of microswitch
5 power supply of bearing and control device 5 '
The arm of force amplifies 6 hydraulic driver 6 ' of bar
7 groove 8 of mounting plate
9 metal backup 10 of dc generator
11 permanent magnet 12 of electric wire
13 compressed spring 14 of electromagnet
Brake disc 16
The stationary part 15 of host brake
Host brakeage part 17
Specific implementation mode
Below with reference to drawings and examples, to a kind of technical solution work of elevator complemental brake system of the present invention
It is described in further detail.
Specific implementation mode 1
Refering to Figure 1, an embodiment of the invention provides a kind of elevator complemental brake system comprising position
Move enlarger, auxiliary brake mechanism, brake disc 16 and dc generator 9.
The wherein described displacement amplifying mechanism is connected with host brakeage part 17, can brake the host
Several times are amplified in the small horizontal displacement of the action part 17 of device, and the auxiliary brake mechanism is pushed to realize the level of displacement enlargement
Movement.It includes band rotary shaft rack 3, holder 4, bearing 5 and arm of force amplification bar 6.
The wherein described holder 4 is fixed together with main machine base 1.The band rotary shaft rack 3 is arranged on the holder 4,
One end links together with host brake action part 17.Arm of force amplification bar 6 by the bearing 5 with it is described
Band turns the connection of shaft support 3, and the arm of force amplification bar 6 connects the correspondence component of the auxiliary brake mechanism:The installation of permanent magnet
Plate 7.In this way, the micro-displacement of the brake action part 17, amplifies bar 6 and its associated component, amplification by the arm of force
The horizontal movement of the larger displacement of the mounting plate 7 of component permanent magnet is corresponded to for the auxiliary brake mechanism.
I.e. when host brakeage part 17 is moved horizontally to separate 16 direction of the brake disc, through described
After displacement amplifying mechanism amplification so that the mounting plate 7 of the permanent magnet is also to far from 16 direction of brake disc movement bigger position
It moves.When host brakeage part 17 is moved horizontally to close 16 direction of the brake disc, put through the displacement
After great institutions amplification, the mounting plate 7 of the permanent magnet also moves more big displacement to close to 16 direction of the brake disc.
The auxiliary brake mechanism is fixed on the stationary part 15 of host brake, including metal backup 10, permanent magnet
12, mounting plate 7, compressed spring 14, electromagnet 13.Wherein the permanent magnet 12 is connect with the metal backup 10, the permanent magnetism
Horizontal motion is realized in 12 upper end of iron by the circular hole on the mounting plate 7, and is limited in vertical direction, and 12 ruler of permanent magnet
The very little Circularhole diameter more than on the mounting plate 7,12 lower end of the permanent magnet is connected with the compressed spring 14.The electromagnet
13 are arranged in the other side of the compressed spring 14, the position of the corresponding permanent magnet 12.The electromagnet 13 passes through electric wire 11
It is electrically connected with the dc generator 9.
It please refers to shown in Fig. 2, the brake disc 16 is collar plate shape, if being provided with towards the auxiliary brake mechanism side
Dry groove 8, for being coupled with the metal backup 10.
Specifically, these wherein described grooves 8 can be divided into inside and outside 2 groups of settings, one circular ring shape of every group of formation, and with institute
It is isocentric circular arc to state brake disc 16, and the groove 8 in two groups is at staggered setting.It is spaced between groove in every group and uniformly divides
Cloth covers the entire braking disk area residing for it.
Further, the overlap distance d of two groups of grooves, value range are:D >=2 times the metal backup it is straight
Diameter when ensureing that elevator host stops at an arbitrary position, has metal backup 10 to be inserted at least one groove 8, and and its
Also there is certain surplus distance at the edge of place groove 8, avoids when elevator starter compensation is poor, the metal backup 10 and institute
It states and generates larger shearing force between brake disc groove 8.
The setting arc length of each groove 8 should be less than car accidental movement maximum distance or elevator equal to national regulations
Producer's design value, because in the distance, metal backup and the recess edge of auxiliary brake mechanism, which are likely to be at, moves freely shape
State does not play a role, as long as displacement distance without departing from national standard minimum range, is still to meet to prevent car accidental movement requirement.
The idler wheel of the dc generator 9 and 16 reliable contacts of the brake disc, and keep rotating with linear velocity.When described
When brake disc 16 rotates, the dc generator 9 be in generating state, described in the electromagnetic attracting force of the generation of the electromagnet 13 forever
For magnet 12 to moving far from 16 direction of the brake disc, the compressed spring 14 is in compressive state, at the metal backup 10
In the state for being detached from the groove 8.
When emergency stop, the stationary part of host brakeage part 17 and brake occur in elevator high-speed cruising
The tight brake disc 16 of 15 brakes, since inertia acts on so that being sent out between the brake disc 16 and the brakeage part 17
Lively friction, the brake disc 16 are still operating, and drive the dc generator 9 to generate electricity so that the work of the electromagnet 13, production
Raw electromagnetic force makes the permanent magnet 12 compress the compressed spring 14, and the metal backup 10 is kept to be not inserted into the groove 8.
When the rotating speed of the brake disc 16 gradually decreases down extremely low, correspondingly, the dc generator 9 exports electricity not
Foot, when at this moment the electromagnetic force of the electromagnet 13 cannot offset 14 elastic force of compressed spring, the metal backup 10 is compressing
The effect of 14 elastic force of spring is lower to be inserted into groove 8, plays brake assisting effect under the small rotary inertia of low speed.
I.e. when the elevator starter provided with elevator complemental brake system of the present invention, the host brake moves
Make part 17 to move horizontally to far from 16 direction of the brake disc, after displacement amplifying mechanism amplification, the permanent magnet
Mounting plate 7 also moves more big displacement to far from 16 direction of brake disc.Because the Circularhole diameter on the mounting plate 7 is less than permanent magnet 12
Size, therefore permanent magnet 12 and metal backup 10 can be driven to move more big displacement to far from 16 direction of brake disc so that described
Metal backup 10 is detached from the groove 8, while realizing that the complemental brake system is synchronous with the host brake and opening.
When elevator stops, host brakeage part 17 is moved to close to 16 direction level of the brake disc
Dynamic, after displacement amplifying mechanism amplification, the mounting plate 7 of the permanent magnet moves bigger to close to 16 direction of the brake disc
Displacement.Under 14 spring-force driven dual of magnetic force and the compressed spring, the permanent magnet 12 is synchronous with its mounting plate 7 to close to described
Move more big displacement in 16 direction of brake disc so that the metal backup 10 is fully inserted into the brake disc groove 8, by the gold
The shearing moment belonged between block 10 and groove 8 plays brake assisting effect, while realizing the complemental brake system and the host
Brake synchronizing close.
Specific implementation mode 2
It please refers to shown in Fig. 3, another embodiment of the invention provides a kind of elevator complemental brake system comprising
Displacement amplifying mechanism, auxiliary brake mechanism, brake disc 16 and dc generator 9.
The wherein described displacement amplifying mechanism uses electromechanical structure comprising detects the micro- of the host brake operation state
Dynamic switch 3 ', holder 4 ', power supply and control device 5 ' and hydraulic driver 6 '.
Whether the wherein described microswitch 3 ' detects host brakeage part 17 tight with the brake disc 16
Contiguity is touched, and state can be obtained by the power supply and control device 5 '.The power supply also controls institute with control device 5 ' simultaneously
State the working condition of hydraulic driver 6.6 one end of the hydraulic driver is fixed on one by the holder 4 ' and main machine base 1
It rises, the other end is connect with the mounting plate 7 of the permanent magnet.
When host brakeage part 17 is moved horizontally to far from 16 direction of the brake disc, the fine motion is opened
It closes 3 ' to disconnect, illustrates that the host brake has already turned on, the power supply controls the hydraulic driver 6 ' with control device 5 '
The mounting plate 7 of the permanent magnet is driven also to move more big displacement to far from 16 direction of the brake disc.When the host brake
Action part 17 to when being moved horizontally close to 16 direction of the brake disc, the microswitch 3 ' is closed, and illustrates the host
Brake has discharged, and the power supply controls the mounting plate 7 that the hydraulic driver 6 drives the permanent magnet with control device 5
Also more big displacement is moved to close to 16 direction of the brake disc.
Further, in the present embodiment, the auxiliary brake mechanism, brake disc 16 and the dc generator being related to
9 is similar with the structure in embodiment 1, and to avoid unnecessary repetition, details are not described herein again.
When work, after detecting that the microswitch 3 ' is closed, illustrate that the host brake has discharged, institute's rheme
The electromechanical structure for moving enlarger drives the mounting plate 7 to be moved to 16 direction of the brake disc, and then drives the metal gear
Block 10 is moved to the groove 8, auxiliary brake function effect.
When emergency stop in high-speed cruising, although the electromechanical structure of the displacement amplifying mechanism also drives the peace of the permanent magnet
Loading board 7 is moved to the groove 8, but since the dc generator 9 be in generating state, the electromagnet 13 attract described in forever
Magnet 12, and then cause the metal backup 10 still in the state for being detached from the groove 8, auxiliary brake function stops.Until
Elevator stops operating, and the direct current generator 9 is stopped so that the electromagnet 13 fails, and the metal backup 10 is described
It is inserted into the groove 8 under the magneticaction of permanent magnet 12 and its mounting plate 7, implements auxiliary brake function.
After detecting that microswitch 3 ' is opened, illustrate that the host brake has already turned on, the displacement amplifying mechanism
Electromechanical structure drive the mounting plate 7 of the permanent magnet move to far from the brake disc direction, and then the metal is driven to keep off
Block 10 is detached from the groove 8, and auxiliary brake function stops.
A kind of elevator complemental brake system of the present invention, or relatively lag behind action synchronous with host brake, no
Main braking moment is undertaken, only works under elevator stopping or elevator fine motion, effectively prevent slipping caused by host misfunctioning of brake
Terraced risk.
Further, elevator complemental brake system of the present invention, using cutting between simple metal backup and groove
Shear force undertakes the mass deviation of car and counterweight, it is only necessary to which the metal backup of small diameter can be realized, of low cost;Exist simultaneously
When elevator high speed emergency stop, present apparatus function stop, metal backup, which does not undertake the braking shearing force under large inertia, securely and reliably to be made
Use long lifespan.
The technical scope of the present invention is not limited solely to the content in above description, and those skilled in the art can not take off
Under the premise of from technical thought of the invention, many variations and modifications are carried out to above-described embodiment, and these deformations and modification should all
When being within the scope of the present invention.
Claims (10)
1. a kind of elevator complemental brake system;It is characterized in that, it includes auxiliary brake mechanism, brake disc and DC generation
Machine;The wherein described auxiliary brake mechanism is arranged on the stationary part of the host brake of elevator comprising metal backup,
Mounting plate and electromagnet are provided with the groove for being coupled with the metal backup, the metal backup in the brake disc
It on the mounting plate, and can horizontally move, to be inserted into the groove or be detached from the groove;The direct current hair
The idler wheel of motor is rotated together with the brake disc;
When the disc rotation, the dc generator work is in generating state, and the electric current exported gives the electromagnetism
Iron so that the electromagnet generates the groove that metal backup described in electromagnetic attracting force is detached from the brake disc;When the brake disc
When stopping, the dc generator is stopped, and the electromagnet powers off demagnetization, so that described in metal backup insertion
The groove of brake disc implements auxiliary brake function.
2. a kind of elevator complemental brake system according to claim 1;It is characterized in that, the wherein described brake disc is disk
Shape structure is provided with two groups of groove groups thereon, and the shape for the groove composition that every group of groove group includes is formed concentric with the brake disc
Arc-shaped.
3. a kind of elevator complemental brake system according to claim 2;It is characterized in that, wherein described two groups of groove groups
It is staggered between groove, the braking disk area where groove group is completely covered.
4. a kind of elevator complemental brake system according to claim 2;It is characterized in that, the weight of wherein described two groups of grooves
Folded distance is more than twice or more of the diameter of the metal backup.
5. a kind of elevator complemental brake system according to claim 1;It is characterized in that, the wherein described dc generator
Idler wheel is rotated with the brake disc with linear velocity.
6. a kind of elevator complemental brake system according to claim 1;It is characterized in that, the wherein described auxiliary brake mechanism
Further include permanent magnet, the permanent magnet upper end is rigidly connected by the mounting plate upper bearing aperture and the metal backup, with institute
Magnetism connects between stating mounting plate.
7. a kind of elevator complemental brake system according to claim 6;It is characterized in that, the wherein described auxiliary brake mechanism
Further include compressed spring, the lower end of the permanent magnet is connected with the compressed spring;The electromagnet is arranged in the compression bullet
The other side of spring, the position of the corresponding permanent magnet.
8. a kind of elevator complemental brake system according to claim 1;It is characterized in that, it further includes displacement equations machine
Structure connects host brakeage part and the mounting plate, is used for host brakeage part
Horizontal displacement amplify the horizontal movement for pushing the mounting plate to realize displacement enlargement to the mounting plate, and drive institute in turn
State the horizontal movement of metal backup.
9. a kind of elevator complemental brake system according to claim 8;It is characterized in that, the wherein described displacement amplifying mechanism
Amplify bar including band rotary shaft rack, holder, bearing and the arm of force;The wherein described holder is used to be mounted on main machine base, described
On the bracket, one end links together the setting of band rotary shaft rack with host brakeage part;The power
Arm amplification bar is connect by the bearing with the band rotary shaft rack, and the arm of force amplification bar connects the mounting plate.
10. a kind of elevator complemental brake system according to claim 8;It is characterized in that, the wherein described displacement equations machine
Structure includes microswitch, holder, power supply and the control device and hydraulic driver for detecting the host brake operation state;Its
Described in host brakeage part described in jogging switches measurement whether be in close contact with the brake disc, state can
It is obtained by the power supply and control device, the power supply also controls the working condition of the hydraulic driver, institute with control device
Hydraulic driver one end is stated by the holder and main machine base with being connected together, the other end is connect with the mounting plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201611196230.5A CN106744455B (en) | 2016-12-22 | 2016-12-22 | A kind of elevator complemental brake system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201611196230.5A CN106744455B (en) | 2016-12-22 | 2016-12-22 | A kind of elevator complemental brake system |
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Publication Number | Publication Date |
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CN106744455A CN106744455A (en) | 2017-05-31 |
CN106744455B true CN106744455B (en) | 2018-10-26 |
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CN201611196230.5A Active CN106744455B (en) | 2016-12-22 | 2016-12-22 | A kind of elevator complemental brake system |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113208295B (en) * | 2021-05-13 | 2022-09-27 | 江西金钱豹保险设备集团有限公司 | Self preservation formula is intensive |
CN117346008B (en) * | 2023-10-12 | 2024-04-19 | 青岛和成实业有限公司 | Intelligent monitoring system for green building |
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CN1189447A (en) * | 1997-01-31 | 1998-08-05 | 上海港机股份有限公司 | Buffer brake |
CN101565144A (en) * | 2009-05-05 | 2009-10-28 | 张先煌 | Power cutting device of self-powering escapement elevator |
KR20110072185A (en) * | 2009-12-22 | 2011-06-29 | (주)대명엘리베이터 | Elevator |
CN102261403A (en) * | 2010-05-31 | 2011-11-30 | 比亚迪股份有限公司 | Brake and braking energy reclaiming system with same |
CN105840694A (en) * | 2016-06-21 | 2016-08-10 | 重庆交通大学 | Electromagnet and friction composite disk type brake and brake method thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0361282A (en) * | 1989-07-31 | 1991-03-18 | Mitsubishi Electric Corp | Brake device for elevator winding machine |
JP3768574B2 (en) * | 1995-11-27 | 2006-04-19 | 三菱電機株式会社 | Elevator brake equipment |
-
2016
- 2016-12-22 CN CN201611196230.5A patent/CN106744455B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1189447A (en) * | 1997-01-31 | 1998-08-05 | 上海港机股份有限公司 | Buffer brake |
CN101565144A (en) * | 2009-05-05 | 2009-10-28 | 张先煌 | Power cutting device of self-powering escapement elevator |
KR20110072185A (en) * | 2009-12-22 | 2011-06-29 | (주)대명엘리베이터 | Elevator |
CN102261403A (en) * | 2010-05-31 | 2011-11-30 | 比亚迪股份有限公司 | Brake and braking energy reclaiming system with same |
CN105840694A (en) * | 2016-06-21 | 2016-08-10 | 重庆交通大学 | Electromagnet and friction composite disk type brake and brake method thereof |
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