CN110436302A - A kind of towed elevator car guide rail sure brake system - Google Patents
A kind of towed elevator car guide rail sure brake system Download PDFInfo
- Publication number
- CN110436302A CN110436302A CN201810410891.6A CN201810410891A CN110436302A CN 110436302 A CN110436302 A CN 110436302A CN 201810410891 A CN201810410891 A CN 201810410891A CN 110436302 A CN110436302 A CN 110436302A
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- Prior art keywords
- voussoir
- caliper
- interior
- driving
- driving shaft
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000000670 limiting effect Effects 0.000 claims abstract description 7
- 230000008520 organization Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 7
- 230000036961 partial effect Effects 0.000 claims description 3
- 210000003128 head Anatomy 0.000 claims 1
- 239000000837 restrainer Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000000979 retarding effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of towed elevator car guide rail sure brake systems, including having master, the limiter of speed and safety tongs of driven shaft, safety tongs includes pedestal, caliper, elastic positioning device, limiter of speed is associated with safety tongs, caliper is equipped with block, the two interior voussoirs in left and right are equipped in caliper, outer voussoir is equipped in the outside of interior voussoir, pedestal is equipped in limiting, the position-limit mechanism of outer voussoir position, in elastic positioning device makes, the big end of outer voussoir is located remotely from each other in the up-down direction, in position-limit mechanism makes, outer voussoir in above-below direction upper limit in initial position；When the revolving speed of driving shaft reaches rated speed, driving shaft is engaged by centrifugal clutching structure with driven shaft, and then it is mobile with moving caliper, the block on caliper keeps the big end of inside and outside voussoir close to each other, to keep two interior voussoirs close to each other and enter on-position.The present invention can realize two-way step-by-step brake braking to carriage, so that it is guaranteed that carriage safety with higher.
Description
Technical field
The present invention relates to the braking system technical fields of towed elevator, pacify more particularly, to a kind of towed elevator car guide rail
Full application of brake system.
Background technique
In towed elevator, sure brake system is the safety device of a solar obligation, existing sure brake system
Limiter of speed including the speed of service for sensing carriage, for occurring realizing mandatory system to elevator when hypervelocity is mobile in carriage
Dynamic brake apparatus, limiter of speed generally include a driving shaft, pulley are arranged on driving shaft, for draw the wirerope of carriage around
It is located on pulley.When carriage lifting, wirerope is rotated by pulley driving driving shaft；When car speeding lifting, limiter of speed
It senses the revolving speed of driving shaft and acts, to drive brake apparatus to act to brake carriage, and then ensure the safety of elevator.In
It is provided in the national safety standard of elevator, when the carriage speed of service is more than normal speed 115%, limiter of speed should be started, thus
Drive brake apparatus braking carriage or counterweight.Brake apparatus is divided into carriage braking and counterweight brakes two kinds, according to different peaces
Full requirement can be individually using also using simultaneously, and when carriage exceeds the speed limit movement on guide rail, the brake apparatus for braking carriage passes through
Carriage is braked to the frictional force for clamping down on generation of guide rail.And the brake apparatus for braking counterweight passes through the wirerope to connection counterweight
The frictional force for clamping down on generation brake counterweight, and then realize the braking of carriage.
It is serious that the passenger in carriage may be made to be hurt since carriage can be made to generate greatly impact in emergency braking
Evil, for this purpose, people have invented some sure brake systems with buffering effect.For example, one kind is public in Chinese patent literature
" the gradual centrifugal brake " opened, publication No. CN107089610A specifically include rotating shaft and are sleeved on rotating shaft
Arrestment mechanism, arrestment mechanism include get rid of block, brake disc and guide pipe, guide pipe is socketed in rotating shaft outer wall, rotating shaft front end
Stretch out corresponding be equipped with of guide pipe and get rid of block: brake disc is cylindrical body, and by Screw assembly in guiding pipe outer wall, front end is prolonged for its rear end
It extending in front of rotating shaft, gets rid of block and be displaced by centrifugal action to brake disc inner wall, brake disc inner wall is equipped with the corresponding ratchet for getting rid of block,
It is oriented to pipe outer wall and is equipped with the resilient snubber for contradicting brake disc.Block is thrown away by centrifugal force, gets rid of block and brake disc after throwing away
Occlusion drives brake disc that buffer spring is displaced and squeezed along guide pipe by rotating shaft, to form step-by-step brake, reduces wink
Between influence and damage of the brake to carriage and running part, avoid the sense of discomfort of passenger in elevator.
Limiter of speed and brake apparatus are set together by above-mentioned brake, and have a buffering effect in braking,
However the brake has following defects that firstly, the brake can only overspeed rotation starting safety arrestment to direction
Effect, that is to say, that we at least need to be arranged two sets of brakes, so that the hypervelocity to carriage rises (rushing to summit) and hypervelocity decline
(crouching bottom) each serves as the effect of safety arrestment.Secondly, the brake is not to be directly to the guide rail or traction for supporting carriage
The wirerope of carriage carries out clamping down on braking, but brakes to driving shaft.Therefore, finally brake carriage is wirerope and cunning
Frictional force between wheel.The mode of braking and elevator it is intrinsic by braking traction machine, rely on wirerope and traction sheave it
Between frictional force realize carriage braking be in principle it is the same, that there is brake force is small for such mode of braking, is promptly making
The problems such as wirerope and pulley can be made to generate serious damage after dynamic.
Especially since existing lift car braking system directly carries out emergency braking with maximum braking friction
, to form an effect brought to a halt, therefore, in braking, car guide rail and brake apparatus can be because excessive braking rub
It wipes power and forms great destruction, that is to say, that existing elevator brake system is difficult to carry out its actual performance, state effective
Monitoring and control, whether people are usually that can be acted, in safety tongs by simply testing limiter of speed in elevator overspeed
Brake block whether can by lifting as judge braking system whether formal approaches and foundation, can not be by really making
Dynamic data go to judge the state of braking system.
Summary of the invention
It is an object of the invention in order to which solve present in existing elevator safety brake system can not be to deviateing just
The problem of mobile carriage of normal lifting speed realizes two-way retarding braking, provides a kind of towed elevator car guide rail safety arrestment system
System can realize that effective bidirectional brake is braked to the carriage for deviateing normal movement speed, so that it is guaranteed that carriage peace with higher
Quan Xing, and the structure of braking system can be simplified.
Another object of the present invention is true in order to solve not carrying out present in existing elevator safety brake system
Braking process test under real field scape, with the reliability of evaluation system the problem of, a kind of towed elevator car guide rail safety is provided
Braking system, analog really brakes scene and carries out analog detection to braking system, so that it is guaranteed that its safety and reliability,
Assessment is made to the state of braking system and service life etc. by record, comparison and the analysis to detection data simultaneously.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of towed elevator car guide rail sure brake system, including be mutually related limiter of speed and safety tongs, state limiter of speed packet
Including rack, the driving shaft being placed coaxially in rack, driven shaft, the damping spring for limiting driven shaft rotation, traction sedan-chair
The wirerope in compartment bypasses the pulley being arranged on driving shaft, and centrifugal clutching structure is equipped between driven shaft and driving shaft；Institute
Stating safety tongs includes pedestal, the caliper and elastic positioning device that are movably disposed on pedestal, and the caliper is equipped with extremely
Few upper and lower two blocks, are movably equipped with the two interior voussoirs in left and right in caliper, the opposite plane of the interior voussoir be for
The braking surface of braking, the lateral surface that interior voussoir is located remotely from each other are the interior driving inclined-plane being inclined outwardly, the interior driving of two interior voussoirs
Inclined-plane is arranged in splayed, is equipped with moveable outer voussoir in the outside of interior voussoir, the medial surface of outer voussoir is oblique with interior driving
The outer driving inclined-plane of face cooperation, the pedestal are equipped with the position-limit mechanism for limiting interior voussoir, outer voussoir position, the elasticity
Positioning device make interior voussoir interior driving inclined-plane and outer voussoir outer driving inclined-plane it is close to each other, and the big end of interior voussoir and outer
The big end of voussoir is located remotely from each other in the up-down direction, position-limit mechanism make inside and outside voussoir in above-below direction upper limit in initial position,
The distance between braking surface of two interior voussoirs maximum at this time；When the revolving speed of driving shaft reaches rated speed, centrifugal clutching
Structure engages driving shaft with driven shaft, and limiter of speed is moved in the up-down direction by related organization's band moving caliper, on caliper
Block keeps the big end of inside and outside voussoir close to each other in the up-down direction, to keep two interior voussoirs close to each other and enter braking
State.
Sure brake system of the invention is arranged at the guide rail of carriage, specifically includes for detecting carriage movement speed
Limiter of speed, the safety tongs for making carriage retarding braking, safety tongs therein include the two interior voussoirs in left and right and two outer wedges
The braking surface for clamping car guide rail is arranged in the opposite side of two interior voussoirs in block.When carriage lifting, wirerope
The band forward and reverse rotation of movable pulley.When the braking surface of the interior voussoir in left and right two clamps car guide rail, the braking of carriage can be realized.
Since the big end of inside and outside voussoir of the invention is located at two sides up and down, and elastic positioning device keeps the interior driving of interior voussoir oblique
The outer driving inclined-plane of face and outer voussoir is close to each other, and therefore, under the action of inside and outside driving inclined-plane, inside and outside voussoir is towards respective
Big end side it is mobile and be located remotely from each other in the up-down direction, position-limit mechanism at this time then makes inside and outside voussoir in the up-down direction
Limit the initial position being located remotely from each other at one.It is known that since inside and outside driving inclined-plane is bonded to each other, when interior voussoir
When being moved along the outer driving inclined-plane of outer voussoir, the longitudinal movement of a up and down direction is on the one hand had, on the other hand has one
The transverse shifting of a left and right directions.When carriage is gone up and down with normal speed, the driving shaft in limiter of speed is mutually separated with driven shaft, because
This safety tongs is failure to actuate.When elevator breaks down, carriage fast lifting when, driving shaft quick rotation therewith, it is centrifugal at this time from
Closing structure can make driven shaft be connected with driving shaft under the influence of centrifugal force, so that driven shaft be driven to rotate, limiter of speed is logical
Crossing related organization moves up or down caliper.In this way, the block on caliper can be driven interior voussoir it is mobile and close to outer wedge
Block, or drive outer voussoir mobile and close interior voussoir, under the action of the inside and outside driving inclined-plane being bonded to each other, two interior wedges
Block laterally moves inward and guide rail that is close to each other and clamping carriage, to realize the bi-directional braking to carriage, that is to say, that
The a set of mechanism of the present invention is the bi-directional braking that can be achieved at the same time to carriage, and avoidable carriage occurs rushing to summit and the safety at crouching bottom is former
Barrier is conducive to the structure for simplifying braking system.It should be noted that in existing Wedge-type brake apparatus, since driving is braked
The active force of voussoir is not lasting, that is to say, that after braking voussoir is acted on by lifting and starts braking, braking voussoir is
Self-locking is formed by by its lesser tilt angle and is maintained at application position, therefore, when the size of car guide rail
It changes or when error, braking friction can correspondingly change, to influence braking ability and effect, and cause subsequent dimension
The difficulty of scotch block reset when repairing in self-locking state.And the present invention, in entire braking process, wirerope can lead to always
It crosses related organization's band moving caliper and is maintained at application position, that is to say, that in entire braking process, interior voussoir or outer voussoir begin
It will receive the effect of a lifting power eventually, therefore, we can make inside and outside voussoir have biggish tilt angle, to can avoid
There is locking phenomenon in braking in inside and outside voussoir, and when subsequent maintenance, we only need to move backward carriage, can conveniently realize
The unlock of brake apparatus resets.In particular, damping spring gradually increases the driving force for being output to safety tongs when braking, safety tongs
Friction brake force is formed by be gradually increased, so as to be effectively prevented from occur bringing to a halt phenomenon and braking when car guide rail and
The damage of brake apparatus, thus can realize and analog detection is carried out to braking system under the true braking scene of simulation, it effectively improves
The safety and reliability of system.
Preferably, the centrifugal clutching structure includes governor spring, face of pulley can be arranged in radially sliding
The limited block for getting rid of hammer and spring base, being connected with driven shaft is equipped with articulated linkage, the speed regulation bullet getting rid of between hammer and spring base
Spring makes spring base be located remotely from the initial position of driving shaft, and spring base makes to get rid of by articulated linkage to be hammered into shape in close to the first of driving shaft
Beginning position, driving shaft and driven shaft at this time are in discrete state；When the revolving speed of driving shaft reaches rated speed, centrifugal force makes
It gets rid of hammer to be moved outwards to the final position far from driving shaft, getting rid of hammer moves inward to spring base diameter close to actively by articulated linkage
The final position of axis, the outer end for getting rid of hammer are in engagement state against limited block, driven shaft and driving shaft.
Driving shaft can be made to easily form with carriage by pulley and the wirerope being wound around on pulley to be associated with, to make
Driving shaft can form simple linear relationship with the lifting speed of carriage.It is understood that we can be in the end face of pulley
Upper setting radial T-slot or dovetail groove, to make to get rid of hammer and spring base and can be radially moved along T-slot or dovetail groove.By
In getting rid of equipped with articulated linkage between hammer and spring base, therefore, linkage can be formed by getting rid of hammer and spring base.It is displaced outwardly when getting rid of hammer
When, spring base moves inward, conversely, getting rid of hammer when spring base is displaced outwardly and moving inward.Governor spring driving spring therein
Seat is displaced outwardly, so that spring base be made to be located in the initial position in outside, correspondingly, spring base at this time is made by articulated linkage
The initial position that hammer is located in inside is got rid of, driven shaft and driving shaft at this time is in discrete state.When pulley rotation, pulley end
Getting rid of for face is displaced outwardly after hammer by the effect of a centrifugal force, and the hammer that gets rid of at this time is overcome by articulated linkage with flexible spring seat
The elastic force of governor spring and move inward；When the revolving speed of pulley and driving shaft reaches rated speed, centrifugal force makes to get rid of hammer diameter
The final position far from driving shaft is moved outward to, the hammer that gets rid of at this time moves inward to spring base diameter close to actively by articulated linkage
The outer end for getting rid of hammer of the final position of axis, rotation can be against being arranged in driven shaft upper limit position block, driven shaft and active at this time
Axis is in engagement state, and driven shaft follows driving shaft to rotate together, and driven shaft increases the resistance of wirerope, correspondingly, steel wire
Rope drives the pulling force of safety tongs to increase by related organization, to realize the retarding braking of carriage.It is understood that we can lead to
Cross the coefficient of elasticity of reasonable setting governor spring and pre-tighten the parameters such as elastic force, be conveniently adjusted driving shaft rated speed,
And the movement speed of hammer is got rid of, and then adjust the retarding braking performance of carriage.
Preferably, the two sides for getting rid of outer end of the hammer far from driving shaft are the first inclined-plane, to make the outer end shape for getting rid of hammer
At swallow-tailed bond end big outside and small inside, the driven shaft is equipped with overlap joint sleeve close to driving shaft one end, in the lap joint sleeve
The inner sidewall of cylinder is equipped with the limited block, and the two sides of the limited block are the second inclined-plane being adapted to first inclined-plane,
To make limited block in dovetail shaped.
Swallow-tailed lap segment is arranged in the outer end for getting rid of hammer of the invention, and correspondingly, limited block is equally in dovetail shaped.This
Sample, when get rid of hammer it is protruding when, the first inclined-plane of swallow-tailed lap segment can make driven shaft against the second inclined-plane of limited block
It is engaged with driving shaft.Lap segment and limited block at this time forms an overhead kick structure, to can avoid leading because of the decline of revolving speed
The retraction of hammer is got rid of in cause, and then can realize the thorough braking of carriage.
Preferably, being fixedly connected with limit sleeve in the rack, the driven shaft is protruded into the limit sleeve, described
Damping spring is to be set in the braking wind spring that limit sleeve part is protruded on driven shaft, and one end of the braking wind spring is fixed with rack
Connection, the other end for braking wind spring are fixedly connected with driven shaft.
When driving shaft drives driven shaft to rotate forward, braking wind spring is gradually tightened, until braking wind spring is tightly around driven
On axis, driven shaft at this time stops operating, and correspondingly, driving shaft and pulley stop operating, to make to be wound around driving shaft
The pulling force of wirerope on pulley is gradually increased, until pulley stops operating, wirerope forms dynamic friction with pulley and produces at this time
Raw maximum pulling force.When driving shaft drives driven shaft to rotate backward, braking wind spring gradually loosens, until braking wind spring is tightly attached to
On the inner sidewall of limit sleeve, driven shaft at this time stops operating, and correspondingly, driving shaft and pulley stop operating, thus make around
The pulling force for the wirerope being located on the pulley of driving shaft is gradually increased, until pulley stops operating, wirerope and pulley shape at this time
Maximum pulling force is generated at dynamic friction.That is, the braking friction of interior voussoir as caused by the pulling force of wirerope is
Start from scratch and gradually increases.It is understood that the spring with other forms compares, braking wind spring has biggish rotation
Amount of zoom, reduces the outer dimension of retarder in which on the one hand can dramatically, while can effectively improve buffering effect when braking, keeps away
Exempt to form car guide rail and destroy, and then can realize the detection of the simulation of real scenes of braking system, it is ensured that the peace of braking system
Entirely, effectively, reliably.
Preferably, the related organization includes driving swing arm, the driving sliding block being arranged on the caliper, the driving
One end of swing arm is hinged with driving sliding block, and the other end of swing arm is driven to be equipped with the drive shaft being rotatablely connected with base, wirerope
Pulling force by drive shaft drive driving swing arm swing, and then by driving sliding block band moving caliper move in the up-down direction.
Driving swing arm is convenient to drive driving sliding block mobile, and then can move up and down with moving caliper.
Preferably, being coaxially equipped with upper and lower two vertical rectangle spliced eyes on the base, fitted in rectangle spliced eye
Equipped with gib block, upper and lower two gib blocks one end close to each other is equipped with lateral slider bar, and upper and lower two slider bars support respectively
By two sides above and below the articulated shaft of driving swing arm and driving sliding block, caliper reset spring is arranged on the gib block.
Slider bar intersects T-shaped with gib block, and gib block fits in rectangle spliced eye, therefore can avoid sliding
The rotation of item and gib block, upper and lower two caliper reset springs can be made to drive swing arm by slider bar and drive the articulated shaft of sliding block
It is centrally positioned position, and then by driving sliding block that caliper is made flexibly to be in intermediate initial position.When driven shaft passes through drive
When the swing of movable pendulum arm drives driving sliding block mobile and then moves up and down with moving caliper, drives swing arm and drive the hinged of sliding block
Axis can between upper and lower two slider bars transverse shifting, avoid the occurrence of stuck phenomenon.
Preferably, two sides is descended to be respectively equipped with rectangular blocked hole on the base, setting has described in the blocked hole
The clamping set of rectangle spliced eye, the gib block fit in the rectangle spliced eye of corresponding side clamping set, clamping set lateral surface
Middle part be equipped with evagination the shaft shoulder, clamping set be located at shaft shoulder exterior portion lateral wall be to fit in corresponding blocked hole just
Tetragonous cylinder, the lateral wall that clamping set is located at shaft shoulder inboard portion are threadedly coupled there are two adjusting nut, and the caliper resets bullet
Spring one end compresses the slider bar of corresponding side, and the clamping that the other end is socketed in corresponding side puts on and compress adjusting nut, just
Four edges of tetragonous cylinder are equipped with transition cylindrical surface, and external screw thread is equipped on transition cylindrical surface, and the clamping set stretches out institute
The outer end for stating blocked hole is threaded with locking nut.
It is the square prism face fitted in corresponding blocked hole since clamping set is located at the lateral wall of shaft shoulder exterior portion,
Therefore clamping set can be effectively prevented from and generate rotation.In particular, four edges of the present invention in square prism face are equipped with transition
Cylindrical surface, correspondingly, corresponding fillet can be arranged in the edge of the rectangular blocked hole of pedestal in we, consequently facilitating blocked hole
Processing, while locking nut being facilitated to say that clamping set is fixed on the base.By changing position of the adjusting nut on clamping set,
We are convenient to the preload elastic force of adjustment caliper reset spring, to can ensure that caliper is positioned exactly on intermediate initial bit
It sets.
Preferably, the position-limit mechanism include two locating clamp plates up and down that pedestal frontal left is set, setting exist
Two locating clamp plates up and down of the positive right side of face of pedestal form the cunning that can accommodate inside and outside voussoir between upper and lower two locating clamp plates
Dynamic space, when inside and outside voussoir is located at initial position in the up-down direction, the locating clamp plate on top is against the outer wedge for corresponding to side
The end face of block big end, the locating clamp plate of lower part is against the end face for the interior voussoir big end for corresponding to side.
Upper and lower two locating clamp plates are convenient to limit the initial position of inside and outside voussoir in the up-down direction, and lower part
Locating clamp plate against corresponding side interior voussoir big end end face, therefore, when caliper pushes downwards outer voussoir to make interior wedge
When block moves inward, it can avoid interior voussoir and mutually separated with locating clamp plate.
Preferably, the top of the caliper is equipped with block described in left and right two, the lower part of the caliper is equipped with left and right
Block described in two is equipped with sliding groove in the centre of block, and the locating clamp plate is slidably disposed in corresponding sliding groove, when
When caliper moves up, the block of caliper lower part drives up the interior voussoir of the locating clamp plate against pedestal lower part, and inside and outside voussoir is upper
Lower section is close to each other upwards, and two interior voussoirs are close to each other and enter on-position；When caliper moves down, the block on caliper top
Driving is against the outer voussoir of the locating clamp plate on pedestal top downwards, and inside and outside voussoir is close to each other in the up-down direction, two interior wedges
Block is close to each other and enters on-position.
Since the locating clamp plate on pedestal is slidably disposed on caliper in corresponding sliding groove, to make caliper and pedestal structure
At being reliably slidably connected, make caliper can opposite base move up and down.At the same time, block by sliding groove and fits in sliding
Locating clamp plate in slot is separated into left and right two parts, therefore, when caliper moves up and down, it can be ensured that with interior voussoir or outer voussoir
With enough contacts area, and then inside and outside voussoir can be made close to each other in the up-down direction and clamp down on car guide rail.It can manage
Solution, we should be such that the lower side of top block and the lower side of top locating clamp plate flushes, correspondingly, the upside of portion's block
Side is flushed with the upper side edge of lower part locating clamp plate.In this way, inside and outside voussoir can be made in above-below direction when starting mobile caliper
It is upper close to each other, and then interior voussoir is made to move inward and clamp down on car guide rail.
Preferably, the rack is equipped with electromagnet at one end on the driving shaft far from driven shaft, in driving shaft
Equipped with sliding jack, it is equipped in the sliding jack by the solenoid actuated and with the armature column of reset spring, the rank
The end that iron prop protrudes into sliding jack is equipped with the extrusion head of cone, and the driving shaft is equipped with radial squeezing through-hole, institute
It states to get rid of to hammer into shape and is equipped with the extruded segment fitted in squeezing through-hole close to the inner end of driving shaft, the end of extruded segment, which is equipped with, squeezes inclined-plane,
When solenoid actuated armature column is moved to application position, the circular conical surface of armature column extrusion head, which reclines, squeezes inclined-plane, to make to get rid of
Hammer is moved outwards to final position.
Electromagnet of the invention is powered off work, when the solenoid is energized, electromagnetic attraction overcome the elastic force of reset spring and
Caliper is set to be located in the middle initial position.When the control system of elevator detects that elevator breaks down to fast lifting, or
When person detects limiter of speed there was a mechanical failure and can not act to brake carriage, control system powers off electromagnet, resets bullet
Spring drives the axial movement of armature column, and what the extrusion head of armature column end can squeeze diametrically opposed arrangement at this time gets rid of hammer,
Make to get rid of the limited block overlap joint on the bond end and driven shaft of hammer outer end, and then engage driven shaft with driving shaft, with realization pair
The buffer deceleration of carriage and braking, to further increase the safety of elevator.That is, when there is disconnection fault in elevator
When, the reset spring of electromagnet can equally drive armature column mobile, and then realize the buffer-braking of carriage, and carriage is avoided to occur certainly
Row lifting.
Therefore, effective two-way the invention has the following beneficial effects: that can be realized to the carriage for deviateing normal movement speed
Brake, so that it is guaranteed that carriage safety with higher, and the structure of braking system can be simplified, analog is really braked
Scene carries out analog detection to braking system, so that it is guaranteed that its safety and reliability, while by record to detection data,
Comparison and analysis make assessment to the state of braking system and service life etc..
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is a kind of structural schematic diagram of safety tongs.
Fig. 3 is the structural schematic diagram at the safety tongs back side.
Fig. 4 is the mounting structure schematic diagram that caliper reset spring decomposes.
Fig. 5 is the structural schematic diagram of limiter of speed.
Fig. 6 is the partial sectional view of the first limiter of speed.
Fig. 7 is the partial sectional view of second of limiter of speed.
In figure: 1, rack 11, limit sleeve 2, driving shaft 21, pulley 211, slippage slot 22, get rid of hammer 221,
Bond end 222, extruded segment 23, spring base 24, articulated linkage 25, slides jack 3, is driven first inclined-plane 223
Axis 31, limited block 311, the second inclined-plane 32, governor spring 33, overlap joint sleeve 34, driving swing arm 4, base
41, clamping set 411, the shaft shoulder 42, locking nut 43, adjusting nut 44, locating clamp plate 45, outer voussoir reset spring
46, special-shaped tension spring 5, caliper 51, block 511, sliding groove 52, limited block 53, driving sliding block 54, gib block
541, slider bar 55, caliper reset spring 56, drive shaft 6, interior voussoir 61, braking surface 62, interior driving inclined-plane
7, outer voussoir 71, outer driving inclined-plane 8, braking wind spring 9, electromagnet, 91, armature column 911, extrusion head.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
Embodiment 1: as shown in Figure 1, a kind of towed elevator car guide rail sure brake system, it is suitable in traction-type electricity
There is emergency braking when fast lifting in the carriage of ladder, to ensure the safe handling of elevator.Limiter of speed and safety tongs are specifically included,
Limiter of speed includes rack 1, the driving shaft being arranged on the rack 2 and the coaxially arranged driven shaft 3 of driving shaft, and key connects on driving shaft
A pulley 21 is connect, the wirerope for drawing carriage is wound around pulley.When carriage is normally gone up and down, wirerope turns pulley
It is dynamic, and then driving shaft rotation is driven, and the rotation of driving shaft and the lifting speed of carriage are linear.
In addition, centrifugal clutching structure can be arranged in we between driven shaft and driving shaft, when driving shaft is with normal speed
When rotation, centrifugal clutching structure is failure to actuate, and driving shaft is mutually separated with driven shaft, and the resistance of driving shaft is close to zero at this time, steel wire
It is static friction between rope and pulley, correspondingly, it is minimum that wirerope is formed by pulling force.When carriage fast lifting, to make actively
When the revolving speed of axis meets or exceeds a rated value, centrifugal clutching structure can make under the influence of centrifugal force driving shaft and from
Moving axis engages, and driving shaft can drive driven shaft to rotate.
In addition, as shown in Figure 1, Figure 2, Figure 3 shows, safety tongs include pedestal 4, be movably disposed at the positive caliper 5 of pedestal,
And elastic positioning device, the related organization driven between limiter of speed and safety tongs by the pulling force of the wirerope by traction carriage
It is associated.When carriage fast lifting, the pulling force of wirerope can drive caliper to move up and down by related organization.In addition, clamping
The front of body is at least arranged upper and lower two blocks 51, in the moving area being made of on caliper upper and lower block movably simultaneously
The two interior voussoirs 6 in row's setting left and right, the opposite inner side plane of interior voussoir are the braking surface 61 for braking car guide rail, interior voussoir
The lateral surface being located remotely from each other is the interior driving inclined-plane 62 being inclined outwardly from top to bottom, to make the interior driving inclined-plane of two interior voussoirs
It is arranged in positive splayed.That is, interior voussoir is the wedge piece that upper end is small, lower end is big.In addition, being set on the outside of interior voussoir
Moveable outer voussoir 7 is set, the medial surface of close interior voussoir is the outer driving inclined-plane 71 cooperated with interior driving inclined-plane on outer voussoir,
To make outer voussoir upper end greatly, under short and small wedge piece.Also, it would be desirable to be arranged on the base for limit interior voussoir,
The position-limit mechanism of the position of outer voussoir in the up-down direction, and on the one hand elastic positioning device makes the big end of interior voussoir and outer voussoir
Big end be located remotely from each other in the up-down direction, on the other hand make the interior driving inclined-plane of interior voussoir and the outer driving inclined-plane phase of outer voussoir
Mutually close, position-limit mechanism at this time makes the big end of interior voussoir be located at the lowermost initial position, and the big end of outer voussoir is then located at most
The initial position of upper end, correspondingly, the carriage of the distance between braking surface of two interior voussoirs maximum, elevator can be freely lifted.
When the revolving speed of driving shaft meets or exceeds rated speed, centrifugal clutching structure engages driving shaft with driven shaft, this time limit
Fast device is moved up or is moved down by related organization's band moving caliper.If caliper moves up, the block of caliper lower part
Interior voussoir is pushed up, to make interior voussoir laterally move inwardly while keeping inside and outside voussoir close to each other in the up-down direction
Dynamic, two interior voussoirs are close to each other and enter the on-position for clamping down on car guide rail at this time.If caliper moves down, caliper
The block on top pushes down on outer voussoir, thus while keeping inside and outside voussoir close to each other in the up-down direction, make interior voussoir to
Inside transverse shifting, two interior voussoirs are close to each other and enter and clamp down on the on-position of car guide rail at this time.It is understood that
We can the left and right sides of caliper be arranged recline corresponding side outer voussoir limited block 52, so as to limit outer voussoir to
Outside is mobile.In addition, we can set between outer voussoir and limited block and between the inside and outside driving inclined-plane of inside and outside voussoir
Needle roller row is set, so as to reduce mutual frictional resistance, the locking phenomenon for occurring stuck between inside and outside voussoir is avoided, has
Conducive to the reset of the safety tongs after elevator faults release.
Good buffering effect when in order to realize safe clamp brake, limiter of speed settable one for limiting driven shaft rotation
Damping spring.Specifically, as shown in Figure 5, Figure 6, we can be fixedly connected with a limit sleeve 11 on the rack, and driven shaft is separate
One end of driving shaft is protruded into limit sleeve, and gap is formed between driven shaft and limit sleeve, and driven shaft protrudes into the portion of limit sleeve
Divide and be arranged a braking wind spring 8, the one end for braking wind spring is fixedly connected with rack, and the other end and driven shaft for braking wind spring are fixed
Connection, the braking wind spring are the damping spring for being construed as limiting driven shaft rotation.When driving shaft drives driven shaft to rotate forward, system
Dynamic wind spring is gradually tightened, and correspondingly, the pulling force of wirerope is gradually increased on pulley, and static friction is formed between pulley and wirerope.
When brake wind spring finally tightly around on driven shaft when, driven shaft stops operating, and correspondingly, driving shaft and pulley stop turning
It is dynamic, dynamic friction is formed between wirerope and pulley, the pulling force of wirerope reaches maximum at this time.We using wirerope pulling force
The caliper movement of safety tongs is driven, to make the braking friction of safety tongs formation from small to large.Analogously, when driving shaft band
When dynamic driven shaft rotates backward, braking wind spring gradually loosen, correspondingly, the pulling force of wirerope is gradually increased on pulley, pulley with
Static friction is formed between wirerope.When braking wind spring is finally tightly attached on the inner sidewall of limit sleeve, driven shaft stops operating, phase
Ying Di, driving shaft and pulley stop operating, and dynamic friction is formed between wirerope and pulley, and the pulling force of wirerope reaches most at this time
Greatly, so that safety tongs be made to form the plugging frictional force being gradually increased.That is, in the braking process of carriage, braking
The pulling force that wind spring exports wirerope, which is started from scratch, to be gradually increased, so that safety tongs be made to be gradually increased car guide rail formation
Friction brake force.It compares with the spring of other forms, braking wind spring has biggish rotation amount of zoom, on the one hand can be significant
Ground reduces the outer dimension of retarder, while can effectively improve buffering effect when braking, avoids forming brokenly car guide rail
It is bad, and then can realize the detection of the simulation of real scenes of braking system, it is ensured that braking system safely, effectively, reliably.
It should be noted that due to safety tongs in the program power from carriage go up and down when wirerope pulling force, because
This, in sedan-chair braking process, wirerope always can safety tongs provide power, so that caliper is maintained at application position, that is to say, that In
In entire braking process, interior voussoir or outer voussoir will receive the effect for lifting power always, and therefore, we can make inside and outside
Voussoir has biggish tilt angle, so that can avoid inside and outside voussoir locking phenomenon occurs in braking.When subsequent maintenance, I
Only need to move backward carriage, can conveniently realize brake apparatus unlock reset.
Further, centrifugal clutching structure of the invention includes governor spring 32, is disposed radially within face of pulley
Get rid of hammer 22 and spring base 23, the limited block 31 that is connected with driven shaft, it is therein to get rid of hammer and spring base fits in pulley end face diameter
Into the slippage slot 211 of arrangement, which can be T-slot or dovetail groove, to make to get rid of hammer and spring base can be in pulley
End face moves radially.In addition, articulated linkage 24 is arranged between hammer and spring base getting rid of, articulated linkage one end and to get rid of hammer hinged, separately
One end is hinged with spring base.And governor spring is located in the slippage slot that spring base is arranged on pulley, the inner end of governor spring compresses
Driving shaft, outer end compress spring base, so that spring base be made to be located remotely from the initial position of driving shaft, spring base passes through articulated linkage
Make to get rid of hammer in the initial position close to driving shaft, driving shaft and driven shaft at this time is in discrete state, and driving shaft can be opposite
Driven shaft idle running.When the rotation of driving shaft, centrifugal force makes to get rid of to hammer into shape to be moved outwards along slippage slot, and get rid of hammer is made by articulated linkage
Spring base diameter inwardly moves, and governor spring at this time is compressed；When the revolving speed of driving shaft meets or exceeds rated speed, centrifugal force
Make to get rid of to hammer into shape and be moved outwards along slippage slot to the final position far from driving shaft, get rid of hammer then keeps spring base radial by articulated linkage
The final position close to driving shaft is inside moved to, gets rid of the outer end of hammer against limited block, driving shaft at this time is in driven shaft to be engaged
State, driven shaft follow driving shaft to rotate together.
As a preferred embodiment, the criss-cross slippage slot of square crossing can be arranged in the end face of pulley in we, accordingly
Ground gets rid of hammer in one of them slippage slot described in setting 2, and 2 are got rid of the two sides hammered into shape and be arranged symmetrically in driving shaft；Phase
Similarly, spring base described in setting 2,2 spring bases are arranged symmetrically in the two sides of driving shaft, make in another slippage slot
Hammer and spring base are got rid of around driving shaft in cross distribution.Certainly, it would be desirable to be set respectively between hammer and 2 spring bases in each get rid of
The articulated linkage, 4 hinged diamondwises of articulated linkage are set, and the tune is respectively set between spring base and driving shaft
Fast spring.In order to make governor spring reliable location, we can be close on the inside of driving shaft and driving shaft in spring base
Positioning groove is respectively set on the outside of spring base, the outer end of governor spring is located in the positioning groove that spring is done and compresses spring
Seat, the inner end of governor spring are located in the positioning groove of driving shaft and compress driving shaft.
Further, it gets rid of and hammers the first inclined-plane that the two sides setting of the outer end far from driving shaft is inclined outwardly from the inside to the outside into shape
222, so that the outer end for getting rid of hammer be made to form swallow-tailed bond end 221 big outside and small inside.And driven shaft is solid close to driving shaft one end
Fixed setting overlap joint sleeve 33, the limited block described in setting 4 on the inner sidewall of overlap joint sleeve, and 4 limited blocks are in circumference
Direction is uniformly distributed.The two sides of limited block are the second inclined-plane 311 being adapted to first inclined-plane, to make limited block in dovetail
Shape.When getting rid of hammer protruding slippage slot under the influence of centrifugal force, the first inclined-plane of swallow-tailed lap segment can be against limit
Second inclined-plane of position block, engages driven shaft with driving shaft.Lap segment and limited block at this time forms an overhead kick structure, from
And it can avoid leading to the retraction for getting rid of hammer because of the decline of revolving speed, and then can realize the thorough braking of carriage.
Related organization of the invention includes driving swing arm 34, the driving sliding block 53 being arranged on caliper, drives the one of swing arm
End is hinged with driving sliding block, and the other end of swing arm is driven to be equipped with the drive shaft 56 being rotatablely connected with base, the drive shaft and steel
Cord is associated.When car speeding lifting, the pulling force of the wirerope on pulley is gradually increased, and is driven to be driven by drive shaft
Movable pendulum arm is swung up and down, and then is moved in the up-down direction by driving sliding block band moving caliper.Since driving swing arm is in the upper bottom
It can make the displacement for driving sliding block to form a transverse direction when dynamic, therefore, the sliding slot of a transverse direction can be arranged at the back side of caliper in we,
Driving sliding block fits in sliding slot.When driving swing arm to swing up and down, the driving sliding block band moving caliper hinged with it can be passed through
It moves up and down.At the same time, driving sliding block can form one or so transverse shifting in the sliding slot at the caliper back side.
In order to enable caliper to be reliably positioned at intermediate initial position, we can be coaxially disposed upper and lower two on the base
A vertical rectangle spliced eye is fitted with gib block 54, upper and lower two gib blocks inner end close to each other in rectangle spliced eye
Lateral slider bar 541 is set, and gib block connects into T-shaped with slider bar, and upper and lower two slider bars bear against driving swing arm
With the two sides up and down of the articulated shaft of driving sliding block, caliper reset spring 55, the inner end of caliper reset spring are arranged on gib block
Compress slider bar.Upper and lower two caliper reset springs make to drive swing arm and the articulated shaft of sliding block are driven to be located in by slider bar
Between position, and then by driving sliding block that caliper is made flexibly to be in intermediate initial position.When driven shaft passes through driving swing arm
When swing drives driving sliding block mobile and then moves up and down with moving caliper, drives swing arm and drive the articulated shaft of sliding block can be upper
Transverse shifting between lower two slider bars, avoids the occurrence of stuck phenomenon.
For convenience of installation, we can descend two sides that rectangular blocked hole is respectively set on the base, setting clamping in blocked hole
Set 41, the inner hole of clamping set are the rectangle spliced eye being slidably connected with the gib block of corresponding side.As shown in figure 5, clamping
The shaft shoulder 411 of the middle part setting evagination of lateral surface is covered, in order to be clamped the axially position of suit timing.Clamping set is located at outside the shaft shoulder
The lateral wall of side section is the square prism face fitted in corresponding blocked hole, and four edges in square prism face are arranged
Transition cylindrical surface, and external screw thread is equipped on transition cylindrical surface, the outer end that clamping set stretches out blocked hole is threadedly coupled a locking
Nut 42, so that clamping set is fixed on the base.When processing, we can make clamping set first be made one positioned at shaft shoulder exterior portion
A external thread column, then four flat gestures, four flat gestures are uniformly distributed in circumferencial direction at cutting on external thread column.In addition, card
It is external thread column that female connector, which is located at shaft shoulder inboard portion, and is threadedly coupled two adjusting nuts 43.It is answered when we rotate against caliper
When the adjusting nut of position spring, i.e., the preload elastic force of adjustable caliper reset spring, to can ensure that caliper is positioned exactly on
Intermediate initial position.Then another adjusting nut is tightened again, and two adjusting nuts is made to be snug against together and be formed certainly
Lock, avoids the voluntarily loosening of adjusting nut.
In order to determine that the initial position of inside and outside voussoir, position-limit mechanism of the invention include that pedestal frontal left is arranged in
Upper and lower two locating clamp plates 44 arranged vertically and two positioning cards arranged vertically up and down that the positive right side of face of pedestal is set
Plate, inside and outside voussoir can be accommodated by being formed between the upper side edge of the locating clamp plate of the lower side and lower part of the locating clamp plate on top
Sliding space.Certainly, the lower side of the locating clamp plate on left and right sides top is contour, the upside of the locating clamp plate of left and right sides lower part
Side is contour, to keep the initial position of the inside and outside voussoir in left side consistent with the initial position of inside and outside voussoir on right side.When inside and outside
When voussoir is located at initial position in the up-down direction, the lower side of the locating clamp plate on top is against the outer voussoir big end for corresponding to side
End face, the locating clamp plate upper side edge of lower part is against the end face of the interior voussoir big end of corresponding side.
In addition, block described in the top setting left and right two of caliper, gear described in left and right two is arranged in the lower part of caliper
Block, in the sliding groove 511 that the intermediate setting of block is adapted to the width of locating clamp plate, the locating clamp plate of left upper portion slides status
In in the sliding groove of left upper portion, the locating clamp plate of left lower is slidably disposed in the sliding groove of left lower, correspondingly, right
The locating clamp plate of upper lateral part is slidably disposed in the sliding groove of right upper portion, and the locating clamp plate of lower right side is slidably disposed in right side
In the sliding groove of lower part.When caliper moves up, the block of caliper lower part is driven up in the locating clamp plate of pedestal lower part
Voussoir, inside and outside voussoir is close to each other in the up-down direction, and two interior voussoirs are close to each other and enter on-position；When under caliper
When shifting, the block on caliper top drives downwards the outer voussoir of the locating clamp plate against pedestal top, and inside and outside voussoir is in above-below direction
Upper close to each other, two interior voussoirs are close to each other and enter on-position.It should be noted that we should make the block on top
Lower side is flushed with the lower side of the locating clamp plate on top
Since the locating clamp plate on pedestal is slidably disposed on caliper in corresponding sliding groove, so that constituting caliper and pedestal can
That leans on is slidably connected, make caliper can opposite base move up and down.At the same time, block by sliding groove and fits in sliding groove
Locating clamp plate be separated into left and right two parts, therefore, when caliper moves up and down, it can be ensured that have with interior voussoir or outer voussoir
Enough contacts area, and then inside and outside voussoir can be made close to each other in the up-down direction and clamp down on car guide rail.It is understood that
That we should be such that the lower side of top block and the lower side of top locating clamp plate flushes, correspondingly, the upper side edge of portion's block with
The upper side edge of lower part locating clamp plate flushes.That is, working as defined by the position-limit mechanism being made of upper and lower two locating clamp plates
Moving area and made in the up-down direction by the moving area that upper and lower two blocks are constituted consistent, the big end of interior voussoir is supported simultaneously
By the block of lower part and the upper side edge of locating clamp plate, the big end of outer voussoir is simultaneously against the block on top and the downside of locating clamp plate
Side.In this way, inside and outside voussoir can be made close to each other in the up-down direction, and then keep interior voussoir inside when starting mobile caliper
It moves and clamps down on car guide rail, caliper is avoided idle stroke occur.
In order to enable inside and outside voussoir to be reliably positioned at initial position, elastic positioning device of the invention includes left and right two
Outer voussoir reset spring 45 and several special-shaped tension springs 46 being arranged between inside and outside voussoir, outer voussoir reset spring therein
Cylindrical pressure spring can be used, outer voussoir reset spring lower end compresses pedestal, and upper end compresses the small of the outer lower wedge portion of corresponding side
End, to make the big end of outer voussoir against the locating clamp plate of a corresponding upper lateral part.In addition, special-shaped tension spring is existed by a spring steel wire
It is formed after the reciprocating and turning-back of left and right in same plane snakelike, is bent to form at the both ends of special-shaped tension spring perpendicular to where special-shaped tension spring
The inserting section of plane.Correspondingly, grafting is respectively set in the front and back of the front and back of interior voussoir and outer voussoir
The inserting section in hole, special-shaped tension spring one end is plugged in the spliced eye of interior voussoir, and the inserting section of the special-shaped tension spring other end is plugged on pair
In the spliced eye for the outer voussoir answered, to form a kind of pulling force between inside and outside voussoir, and then it is located at interior voussoir against lower part
Locating clamp plate initial position.Certainly, the spliced eye at this time on interior voussoir should be higher than that corresponding spliced eye on outer voussoir, so that
The pulling force of the internal voussoir formed by special-shaped tension spring can produce a downward component, it is ensured that interior voussoir is positioned against lower part
The initial position of locating clamp plate.
In order to ensure the reliability of carriage braking, we can also be on the rack on driving shaft far from one end of driven shaft
Place setting electromagnet 9, driving shaft far from be coaxially disposed on the end face of driven shaft sliding jack 25, sliding jack in plug by
The armature column 91 of solenoid actuated, the armature column are connected with a reset spring (not shown), and armature column protrudes into sliding and inserts
The extrusion head 911 of end setting cone in hole.Correspondingly, the squeezing through-hole of rectangle is radially set on driving shaft, and
The extruded segment 223 hammered into shape reducing close to the setting of the inner end of driving shaft is got rid of, in extruded segment and get rid of one step of formation between hammer.
When getting rid of hammer in initial position, extruded segment is fitted in squeezing through-hole.In addition, the end setting of extruded segment squeezes inclined-plane, it should
The inclined direction for squeezing inclined-plane is consistent with the inclined direction of the circular conical surface of the extrusion head of armature column.
When elevator is when operating normally, electromagnet is powered and generates magnetic attraction, so that armature column be made to overcome reset spring
Elastic force and be located at sliding jack outer end initial position；When the control system of elevator detects that elevator failure, carriage are out of control
When with lower than the lifting of the maximum speed of setting, or detect limiter of speed there was a mechanical failure and when can not act, control system
Obtain electromagnet electric, solenoid actuated armature column moves inwardly into application position, the circle of armature column extrusion head in sliding jack
The conical surface, which reclines, gets rid of the extruding inclined-plane of hammer, thus push get rid of hammer be moved outwards get rid of to final position the bond end of hammer outer end with it is driven
Limited block overlap joint on axis, driven shaft engages with driving shaft, and the buffer deceleration to carriage and braking can be realized, so as into one
Step improves the safety of elevator.
It should be noted that caliper and inside and outside voussoir side referred to as front, the other side will be arranged in the present embodiment on pedestal
Then be known as the back side, for interior voussoir, close to corresponding outer voussoir side be outside, two interior voussoirs it is close to each other one
Side is inside.
Embodiment 2: good buffering effect when in order to realize safe clamp brake, as shown in fig. 7, we can make driven shaft with
Sleeve shaped is overlapped into rotation connection, is fixedly connected with a limit sleeve 11 on the rack, driven shaft is protruded into far from one end of driving shaft
In limit sleeve, and gap is formed between driven shaft and limit sleeve, the part that driven shaft protrudes into limit sleeve is arranged a braking volume
Spring 8, the one end for braking wind spring are fixedly connected with overlap joint sleeve, and the other end for braking wind spring is fixedly connected with driven shaft, the braking
Wind spring constitutes damping spring, to make that resilient engagement can be formed between driving shaft and driven shaft.In addition, driven shaft protrudes into limit
The drive shaft on one end and safety tongs in set is coaxially connected.Remaining structure is same as Example 1, is not described herein.
When car speeding lifting, pulley is engaged with overlap joint sleeve, overlaps sleeve rotation to drive, at this time lap joint sleeve
Cylinder drives driven shaft rotation by braking wind spring, and driven shaft is then acted by drive shaft band moving caliper, and two interior voussoirs clamp
Car guide rail, and then start the braking to car guide rail.When pulley continues to rotate, since driven shaft can not rotate at this time, because
This, forms between pulley and driven shaft and relatively rotates, and braking wind spring is gradually tightened or gradually loosened, and correspondingly, pulley passes through
Braking wind spring passes to the torque of driven shaft and is gradually increased, correspondingly driven shaft by drive shaft pass to the active force of caliper by
It is cumulative big, and then so that interior voussoir is formed by braking friction and be gradually increased, static friction is formed between pulley and wirerope at this time.
When braking wind spring is finally tightly around on driven shaft or when being tightly attached on the inner sidewall of limit sleeve, pulley can not be with respect to driven shaft
It continues to rotate, forms dynamic friction between wirerope and pulley, pulley at this time exports maximum torsion by driven axial drive shaft
Square, safety tongs reach maximum to the braking friction of car guide rail.
Claims (10)
1. a kind of towed elevator car guide rail sure brake system, including be mutually related limiter of speed and safety tongs, characterized in that
The limiter of speed includes rack, the driving shaft being placed coaxially in rack, driven shaft, the damping for limiting driven shaft rotation
Spring, the wirerope of traction carriage bypass the pulley being arranged on driving shaft, are equipped between driven shaft and driving shaft centrifugal
Clutch structure；The safety tongs includes pedestal, the caliper and elastic positioning device that are movably disposed on pedestal, described
Caliper is equipped at least upper and lower two blocks, and the two interior voussoirs in left and right are movably equipped in caliper, and the interior voussoir is opposite
Plane be braking surface for braking, the lateral surface that interior voussoir is located remotely from each other is the interior driving inclined-plane being inclined outwardly, in two
The interior driving inclined-plane of voussoir is arranged in splayed, is equipped with moveable outer voussoir, the medial surface of outer voussoir in the outside of interior voussoir
For the outer driving inclined-plane cooperated with interior driving inclined-plane, the pedestal is equipped with the limit for limiting interior voussoir, outer voussoir position
Mechanism, the elastic positioning device make interior voussoir interior driving inclined-plane and outer voussoir outer driving inclined-plane it is close to each other and interior
The big end of voussoir and the big end of outer voussoir are located remotely from each other in the up-down direction, and position-limit mechanism makes inside and outside voussoir in the up-down direction
Limit is in initial position, the distance between braking surface of two interior voussoirs maximum at this time；When the revolving speed of driving shaft reaches specified turn
When fast, centrifugal clutching structure engages driving shaft with driven shaft, limiter of speed by related organization band moving caliper in above-below direction
Upper movement, the block on caliper keeps the big end of inside and outside voussoir close to each other in the up-down direction, to keep two interior voussoirs mutual
Close to and into on-position.
2. a kind of towed elevator car guide rail sure brake system according to claim 1, characterized in that described centrifugal
Clutch structure includes governor spring, getting rid of hammer and spring base, being connected with driven shaft for face of pulley can be arranged in radially sliding
Limited block, articulated linkage is equipped between hammer and spring base getting rid of, the governor spring makes spring base be located remotely from driving shaft
Initial position, spring base make to get rid of hammer in the initial position close to driving shaft by articulated linkage, driving shaft at this time and driven
Axis is in discrete state；When the revolving speed of driving shaft reaches rated speed, centrifugal force makes to get rid of hammer radial outward movement to far from driving shaft
Final position, get rid of hammer makes spring base diameter move inward to the final position of close driving shaft by articulated linkage, gets rid of the outer end of hammer
Against limited block, driven shaft and driving shaft are in engagement state.
3. a kind of towed elevator car guide rail sure brake system according to claim 2, characterized in that described to get rid of hammer far
The two sides of outer end from driving shaft are the first inclined-plane, so that the outer end for getting rid of hammer is made to form swallow-tailed bond end big outside and small inside,
The driven shaft is equipped with overlap joint sleeve close to driving shaft one end, is equipped with the limit on the inner sidewall of the overlap joint sleeve
Block, the two sides of the limited block are the second inclined-plane being adapted to first inclined-plane, to make limited block in dovetail shaped.
4. a kind of towed elevator car guide rail sure brake system according to claim 2, characterized in that in the rack
On be fixedly connected with limit sleeve, the driven shaft protrudes into the limit sleeve, and the damping spring is to be set on driven shaft and stretch
Enter the braking wind spring of limit sleeve part, one end of the braking wind spring is fixedly connected with rack, brake wind spring the other end and from
Moving axis is fixedly connected.
5. a kind of towed elevator car guide rail sure brake system according to claim 1, characterized in that the association machine
Structure includes driving swing arm, the driving sliding block being arranged on the caliper, and one end and the driving sliding block of the driving swing arm are hinged,
The pulling force of wirerope drives driving swing arm to swing, and then is moved in the up-down direction by driving sliding block band moving caliper.
6. a kind of towed elevator car guide rail sure brake system according to claim 1, characterized in that same on the base
Upper and lower two vertical rectangle spliced eyes are equipped with to axis, gib block, upper and lower two gib block phases are fitted in rectangle spliced eye
Mutually close one end is equipped with lateral slider bar, and upper and lower two slider bars bear against driving swing arm and drive the articulated shaft of sliding block
Upper and lower two sides are arranged with caliper reset spring on the gib block.
7. a kind of towed elevator car guide rail sure brake system according to claim 6, characterized in that under on the base
Two sides are respectively equipped with rectangular blocked hole, and setting has the clamping set of the rectangle spliced eye, the guiding in the blocked hole
Item fits in the rectangle spliced eye of corresponding side clamping set, and the middle part of clamping set lateral surface is equipped with the shaft shoulder of evagination, clamping set
Lateral wall positioned at shaft shoulder exterior portion is the square prism face fitted in corresponding blocked hole, and clamping set is located on the inside of the shaft shoulder
Partial lateral wall is threadedly coupled there are two adjusting nut, and caliper reset spring one end compresses the slider bar of corresponding side,
The clamping that the other end is socketed in corresponding side puts on and compresses adjusting nut, and four edges in square prism face are equipped with transition
Cylindrical surface, is equipped with external screw thread on transition cylindrical surface, and the outer end that the clamping set stretches out the blocked hole is threaded with locking
Nut.
8. a kind of towed elevator car guide rail sure brake system according to claim 1, characterized in that the position restrainer
Structure includes two locating clamp plates up and down that pedestal frontal left is arranged in, two positioning cards up and down that the positive right side of face of pedestal is arranged in
Plate forms the sliding space that can accommodate inside and outside voussoir between upper and lower two locating clamp plates, when inside and outside voussoir in above-below direction
When being above located at initial position, the locating clamp plate on top is against the end face of the outer voussoir big end of corresponding side, the locating clamp plate of lower part
Against the end face of the interior voussoir big end of corresponding side.
9. a kind of towed elevator car guide rail sure brake system according to claim 8, characterized in that the caliper
Top is equipped with block described in left and right two, and the lower part of the caliper is equipped with block described in left and right two, in the centre of block
Equipped with sliding groove, the locating clamp plate is slidably disposed in corresponding sliding groove, when caliper moves up, the block of caliper lower part to
The interior voussoir of locating clamp plate of the upper driving against pedestal lower part, inside and outside voussoir is close to each other in the up-down direction, two interior voussoirs
It is close to each other and enter on-position；When caliper moves down, the block on caliper top drives downwards the positioning against pedestal top
The outer voussoir of snap-gauge, inside and outside voussoir is close to each other in the up-down direction, and two interior voussoirs are close to each other and enter on-position.
10. a kind of towed elevator car guide rail sure brake system according to claim 9, characterized in that the rack
It is equipped with electromagnet at one end on driving shaft far from driven shaft, sliding jack, the sliding jack are equipped in driving shaft
The interior armature column being equipped with by the solenoid actuated, the end that the armature column protrudes into sliding jack are equipped with the extruding of cone
Head, the driving shaft are equipped with radial squeezing through-hole, and the inner end for getting rid of the close driving shaft of hammer, which is equipped with, fits in squeezing through-hole
Interior extruded segment, the end of extruded segment, which is equipped with, squeezes inclined-plane, when solenoid actuated armature column is moved to application position, armature column
The circular conical surface of extrusion head, which reclines, squeezes inclined-plane, to make to get rid of hammer radial outward movement to final position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410891.6A CN110436302A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator car guide rail sure brake system |
| PCT/CN2019/083659 WO2019210789A1 (en) | 2018-05-02 | 2019-04-22 | Safety braking system for car guide rail of dragging elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410891.6A CN110436302A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator car guide rail sure brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110436302A true CN110436302A (en) | 2019-11-12 |
Family
ID=68386259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810410891.6A Pending CN110436302A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator car guide rail sure brake system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110436302A (en) |
| WO (1) | WO2019210789A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104902A (en) * | 2021-11-24 | 2022-03-01 | 上海三菱电梯有限公司 | Asymmetric safety tongs and elevator |
| CN114261910A (en) * | 2022-03-03 | 2022-04-01 | 河南省祥东交通建设工程有限公司 | Winch device and precast beam hoisting method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112437218B (en) * | 2020-11-24 | 2022-01-11 | 湛江芯能量网络科技有限公司 | Energy-saving and environment-friendly image recognition equipment with protection effect |
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| CN114261910A (en) * | 2022-03-03 | 2022-04-01 | 河南省祥东交通建设工程有限公司 | Winch device and precast beam hoisting method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019210789A1 (en) | 2019-11-07 |
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