CN110436286A

CN110436286A - Towed elevator car guide rail braking system and its detection method

Info

Publication number: CN110436286A
Application number: CN201810408918.8A
Authority: CN
Inventors: 陈庆; 邓健; 李军
Original assignee: Shaanxi Xiaoxi Electromechanical Technology Co Ltd
Current assignee: Shaanxi Xiaoxi Electromechanical Technology Co Ltd
Priority date: 2018-05-02
Filing date: 2018-05-02
Publication date: 2019-11-12
Anticipated expiration: 2038-05-02
Also published as: WO2019210788A1; CN110436286B

Abstract

The invention discloses a kind of towed elevator car guide rail braking system and its detection methods, including car status sensor group, detection device, be mutually related limiter of speed and safety tongs, 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.Carriage safety with higher of the present invention.

Description

Towed elevator car guide rail braking system and its detection method

Technical field

The present invention relates to the braking system technical fields of towed elevator, more particularly, to a kind of towed elevator car guide rail system Dynamic system and its detection method.

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, from And drive brake apparatus braking carriage or counterweight.Brake apparatus is divided into carriage braking and counterweight brakes two kinds, according to different Safety requirements can be individually using also using simultaneously, and when carriage exceeds the speed limit movement on guide rail, the brake apparatus for braking carriage is logical The frictional force for clamping down on generation to guide rail is crossed to brake carriage.And the brake apparatus for braking counterweight passes through the steel wire to connection counterweight The frictional force for clamping down on generation of rope brakes counterweight, and then realizes 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 braking system, It can realize that effective bidirectional brake is braked to the carriage for deviateing normal movement speed, so that it is guaranteed that carriage safety with higher Property, 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 braking is provided System, analog really brakes scene and carries out analog detection to braking system, so that it is guaranteed that its safety and reliability, simultaneously Assessment is made to the state of braking system and service life etc. by record, comparison and the analysis to detection data.

To achieve the goals above, the invention adopts the following technical scheme:

A kind of towed elevator car guide rail braking system, feedback current state information to towed elevator control system, including For detecting car status sensor group, the detection device for receiving the instruction of towed elevator control system, the mutually pass of car status The limiter of speed and safety tongs of connection, including at least in car status sensor group has car position sensor, car status sensor Group is connect with towed elevator control system, and the limiter of speed includes rack, the driving shaft being placed coaxially in rack, driven Axis, the damping spring for limiting driven shaft rotation, the wirerope of traction carriage bypass the pulley being arranged on driving shaft, from Centrifugal clutching structure is equipped between moving axis and driving shaft；The safety tongs includes pedestal, is movably disposed on pedestal Caliper and elastic positioning device, the caliper are equipped at least upper and lower two blocks, and a left side is movably equipped in caliper Right two interior voussoirs, the opposite plane of the interior voussoir are the braking surface for braking, and the lateral surface that interior voussoir is located remotely from each other is The interior driving inclined-plane of the interior driving inclined-plane being inclined outwardly, two interior voussoirs arranges that being equipped in the outside of interior voussoir can in splayed Mobile outer voussoir, the medial surface of outer voussoir are the outer driving inclined-plane cooperated with interior driving inclined-plane, and the pedestal is equipped with and is used for Limit in voussoir, outer voussoir position position-limit 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 the big end of interior voussoir and the big end of outer voussoir are located remotely from each other in the up-down direction, limit Mechanism makes inside and outside voussoir, and upper limit is in initial position in above-below direction, and the distance between braking surface of two interior voussoirs is most at this time Greatly；When the revolving speed of driving shaft reaches rated speed, centrifugal clutching structure engages driving shaft with driven shaft, and limiter of speed passes through Related organization's band moving caliper moves in the up-down direction, and the block on caliper makes the big end of inside and outside voussoir phase in the up-down direction Mutually close, to keep two interior voussoirs close to each other and enter on-position, the detection device configuration is separate on driving shaft At one end of driven shaft.

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.Under normal circumstances, integral replacing is needed after safety tongs movement, even detection is qualified Safety tongs also have to replace, therefore safety tongs detection is nonsensical, but the present invention is due to the speed limit that is mutually related The ways of deceleration that device and safety tongs use is reasonable, can carry out corresponding safety detection to safety tongs, detect to safety tongs, The numerical value wherein detected includes that buffer deceleration angle value, braking distance value and lower electromagnet are attracted buffer deceleration angle value head after instruction The delay time value of secondary appearance.These detect numerical value and obtain after detecting accordingly to carriage by sensor group respectively, or It will test data and be uploaded to towed elevator control system, be calculated by towed elevator control system, obtaining for these data can So that the present invention accurately detects safety tongs, a detection can also be done to the entirety of elevator device, it is first time especially daily Elevator sky run test in, can realize above-mentioned detection during to elevator complete detection, not will increase elevator detection time Several requirements, can preferably improve the safety of elevator, and in the application, current car position is by configuring the position on well enclosure Sensor is detected, and the carriage movement speed is believed by towed elevator control system according to the feedback of position sensor and time Calculating acquisition number is carried out, the weight sensor that the load of the carriage has carriage included is detected；So in sensor group extremely Elevator position sensor is needed less, secondly, other any necessary sensors can be introduced.

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 detection device includes electromagnet and the armature column by the solenoid actuated, the electromagnet It is connected to power supply by electro-magnet control switch, the control terminal of the electro-magnet control switch receives towed elevator control system Control instruction, the rack are equipped with electromagnet at one end on driving shaft far from driven shaft, are equipped with sliding in driving shaft Jack, the interior armature column being equipped with by the solenoid actuated and have reset spring of sliding jack, the armature column protrude into The extrusion head that the end in jack is equipped with cone is slided, the driving shaft is equipped with radial squeezing through-hole, and the hammer that gets rid of leans on The inner end of nearly driving shaft is equipped with the extruded segment fitted in squeezing through-hole, and the end of extruded segment, which is equipped with, squeezes inclined-plane, works as electromagnet For driving armature column when being 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 diameter outside Move 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.

A kind of towed elevator car guide rail braking system safety detection method is suitable for towed elevator carriage as described above Guide rail braking system, comprising the following steps:

Initial step, towed elevator control system keeps detection current car status, if meeting the detection manually set It is required that then enter detecting step,

Detecting step one, electromagnet be powered and generate magnetic attraction, thus make armature column overcome reset spring elastic force and position Initial position in sliding jack outer end；

Detecting step two, solenoid actuated armature column move inwardly into application position in sliding jack, and armature column squeezes The circular conical surface of head, which reclines, gets rid of the extruding inclined-plane of hammer, is moved outwards the bond end that hammer outer end is got rid of to final position to push and get rid of hammer It is overlapped with the limited block on driven shaft, driven shaft is engaged with driving shaft, realizes the buffer deceleration to carriage and braking；

Detecting step three is uploaded to by the buffer deceleration state and braking distance of car status sensor group detection carriage Towed elevator control system, by towed elevator control system according to preset detecting state threshold comparison, if all parameters exist In preset detecting state threshold value, then judge that safety is up to standard, security alarm is otherwise issued by towed elevator control system.

Electromagnet of the invention is a kind of element that can be actively controlled, and is limited by decline completely with other in the present invention The element of speed is different, and the size for essentially consisting in centrifugal force is related to elevator stall, needs to significantly alter elevator operation, This is unfavorable, and electromagnet can directly change the operating status of safety tongs according to control command, as a result, using to electromagnetism The control of iron, when so that safety tongs operating status changing to detect safety tongs work, the buffer deceleration angle value of carriage, braking away from The delay time value that buffer deceleration angle value first appears after instructing is attracted from value and lower electromagnet.And then judge the reliable of safety tongs Property is a kind of extremely effective method generated based on structure of the invention feature.

Preferably, in the initial step, detection current car status includes at least current car position, the mobile speed of carriage The load of degree and carriage,

The testing requirements manually set include at least the mobile speed of preset time value, current car positional value, carriage The load value of angle value and carriage；

In detecting step three, the detecting state threshold value includes that buffer deceleration angle value, braking distance value and lower electromagnet are inhaled Close the delay time value that buffer deceleration angle value first appears after instructing.

After the present invention obtains these current numerical value, the integrally-built safety of the present invention, the present invention can be defined substantially In detecting state threshold value demarcate acquisition in advance by calibration engineer, in the present invention other than directly comparing, can also use Buffer deceleration angle value is for the first time after being attracted instruction with the buffer deceleration angle value that stores after last time detection, braking distance value and lower electromagnet The delay time value of appearance compares, if the buffer deceleration angle value of this detection, braking distance value and lower electromagnet are attracted The buffer deceleration angle value of buffer deceleration angle value first appears after instruction delay time value and last stored, braking distance value and under The threshold value that the delay time value diversity factor that buffer deceleration angle value first appears after electromagnetic actuation instruction is greater than setting can also be sentenced There are security risks for disconnected current structure.These testing results in the present invention can be right in conjunction with the data of current elevator operation Than and analysis assessment is made to the state of braking system and service life etc., can also be with to all acquisitions for having been sold out product data Big data is formed, improvement subsequent to the present invention provides help.

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 a kind of structural schematic diagram of limiter of speed.

Fig. 6 is the partial sectional view 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, the first inclined-plane 223, extruded segment 23, spring base 24, articulated linkage 25, sliding jack 3, driven shaft 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 volume are yellow 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 braking system, it is suitable in traction elevator There is emergency braking when fast lifting in carriage, to ensure the safe handling of elevator.It specifically includes for detecting car status Car status sensor group, the detection device for receiving the instruction of towed elevator control system, be mutually related limiter of speed and safety tongs, Including at least in car status sensor group has car position sensor, car status sensor group and towed elevator control system Connection, the limiter of speed and safety tongs, limiter of speed include rack 1, the driving shaft being arranged on the rack 2, with the coaxial cloth of driving shaft The driven shaft 3 set, a pulley 21 is keyed on driving shaft, and the wirerope for drawing carriage is wound around pulley.Work as carriage When normal lifting, wirerope makes pulley rotation, and then drives driving shaft rotation, and the rotation of driving shaft and the lifting speed of carriage It spends 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 drives driven shaft to rotate synchronously.

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 yellow damping spring for being construed as limiting driven shaft rotation of braking volume.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, 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.That is, when being limited by the position-limit mechanism that upper and lower two locating clamp plates are constituted Fixed 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 same When against 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 and locating clamp plate on top Lower side.In this way, inside and outside voussoir can be made close to each other in the up-down direction, and then make interior voussoir when starting mobile caliper It moves inward 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.

The detection device includes electromagnet and the armature column by the solenoid actuated, and the electromagnet passes through electromagnet Control switch connects to power supply, and the control terminal of the electro-magnet control switch receives the control instruction of towed elevator control system, Electromagnet 9 is set at one end on driving shaft far from driven shaft on the rack, and driving shaft is far from same on the end face of driven shaft Sliding jack 25 is set to axis, the armature column 91 by solenoid actuated is plugged in sliding jack, the armature column and one reset bullet Spring (not shown) is connected, and armature column protrudes into the extrusion head 911 of the end setting cone in sliding jack.Correspondingly, The squeezing through-hole of rectangle is radially set on driving shaft, and gets rid of hammer in the extruded segment reduced close to the setting of the inner end of driving shaft 223, in extruded segment and get rid of one step of formation between hammer.When getting rid of hammer in initial position, extruded segment fits in extruding In through-hole.In addition, the end setting of extruded segment squeezes inclined-plane, the circle of the extrusion head of the inclined direction and armature column on the extruding inclined-plane The inclined direction of the conical surface is consistent.

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, we can make driven shaft and overlap joint sleeve shaped At rotation connection, it is fixedly connected with a limit sleeve 11 on the rack, driven shaft protrudes into limit sleeve far from one end of driving shaft, and Gap is formed between driven shaft and limit sleeve, the part that driven shaft protrudes into limit sleeve is arranged a braking wind spring 8, brakes wind spring One end be fixedly connected with overlap joint sleeve, the other end for braking wind spring is fixedly connected with driven shaft, and yellow constitute of braking volume is hindered Buddhist nun's spring, to make that resilient engagement can be formed between driving shaft and driven shaft.In addition, driven shaft protrude into one end in limit sleeve with Drive shaft on safety tongs 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 moves driven shaft rotation by braking volume yellowish leukorrhea, and driven shaft is then acted by drive shaft band moving caliper, and two interior voussoirs both clamped Car guide rail, and then start the braking to car guide rail.When pulley continues through, braking volume is yellow flexibly to drive driven shaft rotation When, since driven shaft can not rotate at this time, it is formed and is relatively rotated between pulley and driven shaft, braking wind spring is gradually received Tightly or gradually loosen, correspondingly, pulley is gradually increased by the torque that braking volume Huang passes to driven shaft, and correspondingly driven shaft is logical The active force that axis of overdriving passes to caliper is gradually increased, and then so that interior voussoir is formed by braking friction and be gradually increased, this When pulley and wirerope between form static friction.When braking wind spring is finally tightly around on driven shaft or being tightly attached to limit sleeve When on inner sidewall, pulley can not be continued to rotate with respect to driven shaft, and dynamic friction is formed between wirerope and pulley, and pulley at this time is logical It crosses driven axial drive shaft and exports maximum torque, safety tongs reaches maximum to the braking friction of car guide rail.

A kind of towed elevator car guide rail braking system safety detection method is suitable for as described in embodiment 1 or embodiment 2 Towed elevator car guide rail braking system, comprising the following steps:

Initial step, towed elevator control system keeps detection current car status, if meeting the detection manually set It is required that then entering detecting step, in the initial step, detection current car status includes at least current car position, carriage movement The load of speed and carriage, the testing requirements manually set include at least preset time value, current car positional value, sedan-chair The load value of compartment movement speed value and carriage；

Detecting step three is uploaded to by the buffer deceleration state and braking distance of car status sensor group detection carriage Towed elevator control system, by towed elevator control system according to preset detecting state threshold comparison, if all parameters exist In preset detecting state threshold value, then judges that safety is up to standard and returns to initial step, otherwise sent out by towed elevator control system Security alarm out.In detecting step three, the detecting state threshold value includes buffer deceleration angle value, braking distance value and lower electromagnetism The delay time value that buffer deceleration angle value first appears after iron actuation instruction.

Under normal circumstances, integral replacing is needed after safety tongs movement, even the safety tongs of detection qualification also must It need replace, therefore safety tongs detection is nonsensical, but the present invention is due to being mutually related limiter of speed and safety tongs is adopted Ways of deceleration is reasonable, can carry out corresponding safety detection to safety tongs, detect to safety tongs, wherein the number detected Value includes the delay that buffer deceleration angle value first appears after buffer deceleration angle value, braking distance value and lower electromagnet actuation instruct Time value.These detection numerical value obtain after detecting accordingly to carriage by sensor group respectively, or will test in data Towed elevator control system is reached, is calculated by towed elevator control system, these data obtain, can make the present invention Accurate detection safety tongs can also do a detection to the entirety of elevator device, and especially daily first time elevator sky runs examination In testing, above-mentioned detection can be realized during to elevator complete detection, not will increase the requirement of elevator detection number, it can be compared with The safety of good raising elevator, in the application, current car position is examined by the position sensor configured on well enclosure It surveys, the carriage movement speed calculate according to the feedback and time signal of position sensor and be obtained by towed elevator control system , the weight sensor that the load of the carriage has carriage included is detected；So at least needing elevator in sensor group Position sensor, secondly, other any necessary sensors can be introduced.

After the present embodiment obtains these current numerical value, the integrally-built safety of the present embodiment can be specified substantially, this Detecting state threshold value in embodiment is demarcated acquisition by calibration engineer in advance, in the present embodiment other than directly comparing, also It can be using buffer deceleration after being instructed with the buffer deceleration angle value, braking distance value and lower electromagnet actuation stored after last time detection The delay time value that angle value first appears compares, if buffer deceleration angle value, braking distance value and the lower electricity of this detection Magnet be attracted the buffer deceleration angle value of the delay time value and last stored that first appear of buffer deceleration angle value after instruction, braking away from The threshold value that the delay time value diversity factor that buffer deceleration angle value first appears after instructing is greater than setting is attracted from value and lower electromagnet Also it may determine that there are security risks for current structure.These testing results in the present embodiment, in conjunction with current elevator operation Data, can compare and analyze and make assessment to the state of braking system and service life etc., have been sold out product data to all Acquisition can also form big data, improvement subsequent to the present embodiment provides help.

More specifically embodiment is as follows: empty in first time daily elevator runs i.e. no-load test operation in detection In, the position of current car, the load of current car are detected after powering on first, it is ensured that current car is zero load, then by system Judgement can carry out no-load test really and run, and then drive traction sheave operation, and carriage acts in hoistway,

According to artificial setting, two ways can be set with and detected, one is cause after carriage stall to safety The action state of pincers is detected, and there are certain damages to elevator for such case, can abandon, and selection is to operate normally State-driven electromagnet action, the safety that elevator is run by detecting the mode of working condition of safety tongs after electromagnet action Property carries out assessment judgement,

System can execute one-off by control electromagnet first when carriage zero velocity zero shift according to default, so Preliminary assessment is carried out, since this movement is in carriage according to the feedback that current execution acts in driving traction sheave movement afterwards When zero velocity zero shift, therefore occur compared with major break down when, can directly take measures on customs clearance, such as the mode of shutdown, The loss for reducing elevator components, if not occurring more serious data movement, it can be assumed that current safety pincers are suitable for carrying out down The detection of one step；

After second step detects safety tongs reset, when carriage acts under traction wheel drive, according to control instruction, electromagnet is again Degree movement, the relevant parameter after detection safety tongs acts once again at this time, comparison elevator operation and the buffer deceleration detected The delay time value that buffer deceleration angle value first appears after angle value, braking distance value and lower electromagnet actuation instruction, by preset Algorithm is judged that the algorithm being previously mentioned in the present embodiment, way of realization is more, and the applicant does not do specific disclosure, such as adopts The demand of safety evaluation can be realized with various forms of algorithms such as fuzzy algorithmic approach, weighting algorithm, comparison algorithms.

The present embodiment security algorithm implement judgement after, can save currently detected buffer deceleration angle value, braking away from It is attracted the delay time value that buffer deceleration angle value first appears after instructing from value and lower electromagnet and is used for subsequent contrasting detection.

But since these parameters and the correlation of elevator operation are higher, do not selecting big memory space to deposit When reservoir, currently detected buffer deceleration angle value, braking distance value and the lower electromagnet that can only retain are attracted instruction The delay time value that buffer deceleration angle value first appears afterwards is used for subsequent contrasting detection, this contrasting detection is generally used for auxiliary Help detection.Buffer deceleration angle value is first after buffer deceleration angle value, braking distance value and the lower electromagnet detected such as this is attracted instruction The delay time value of secondary appearance and buffer deceleration angle value, braking distance value and the lower electromagnet of last stored buffer after being attracted instruction It is hidden that the threshold value that the delay time value diversity factor that deceleration value first appears is greater than setting also may determine that current structure has safety Suffer from.

These testing results in the present embodiment can be compared and be analyzed to system in conjunction with the data of current elevator operation State and service life of dynamic system etc. make assessment, can also form big data to all acquisitions for having been sold out product data, Improvement subsequent to the present embodiment provides help.

Claims

1. a kind of towed elevator car guide rail braking system, feedback current state information to towed elevator control system, feature Be, including for detecting car status car status sensor group, receive towed elevator control system instruction detection device, Be mutually related limiter of speed and safety tongs, and including at least in car status sensor group has car position sensor, car status Sensor group is connect with towed elevator control system, the limiter of speed include rack, the driving shaft being placed coaxially in rack, Driven shaft, the damping spring for limiting driven shaft rotation, the wirerope of traction carriage bypass the pulley being arranged on driving shaft, Centrifugal clutching structure is equipped between driven shaft and driving shaft；The safety tongs includes pedestal, is movably disposed at pedestal On caliper and elastic positioning device, the caliper be equipped at least upper and lower two blocks, movably set in caliper There are the two interior voussoirs in left and right, the opposite plane of the interior voussoir is the braking surface for braking, the outside that interior voussoir is located remotely from each other Face is the interior driving inclined-plane being inclined outwardly, and the interior driving inclined-plane of two interior voussoirs is arranged in splayed, is set on the outside of interior voussoir There is moveable outer voussoir, the medial surface of outer voussoir is the outer driving inclined-plane cooperated with interior driving inclined-plane, and the pedestal is equipped with For limiting the position-limit mechanism of interior voussoir, outer voussoir position, the elastic positioning device makes the interior driving inclined-plane of interior voussoir and outer The outer driving inclined-plane of voussoir is close to each other, and the big end of interior voussoir and the big end of outer voussoir are 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, at this time between the braking surface of two interior voussoirs away from From maximum；When the revolving speed of driving shaft reaches rated speed, centrifugal clutching structure engages driving shaft with driven shaft, limiter of speed It is moved in the up-down direction by related organization's band moving caliper, the block on caliper makes the big end of inside and outside voussoir in above-below direction Upper close to each other, to keep two interior voussoirs close to each other and enter on-position, the detection device configuration is on driving shaft At one end far from driven shaft.

2. a kind of towed elevator car guide rail braking system according to claim 1, characterized in that the centrifugal clutching Structure includes governor spring, face of pulley can the be arranged in limit getting rid of hammer and spring base, being connected with driven shaft with radially sliding Position block is equipped with articulated linkage getting rid of between hammer and spring base, the governor spring makes spring base be located remotely from the initial of driving shaft Position, spring base make to get rid of hammer at the initial position close to driving shaft, driving shaft and driven shaft at this time by articulated linkage 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 the end far from driving shaft Stop bit is set, and the final position that hammer makes spring base diameter move inward to close driving shaft by articulated linkage is got rid of, get 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 braking system according to claim 2, characterized in that the hammer that gets rid of is far from main The two sides of the outer end of moving axis 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, it is described Driven shaft is equipped with overlap joint sleeve close to driving shaft one end, is equipped with the limited block, institute on the inner sidewall of the overlap joint sleeve The two sides for stating 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 braking system according to claim 2, characterized in that solid in the rack Surely it is connected with limit sleeve, the driven shaft protrudes into the limit sleeve, and the damping spring is to be set on driven shaft to protrude into limit One end of the braking wind spring of position set part, the braking wind spring is fixedly connected with rack, brakes the other end and driven shaft of wind spring It is fixedly connected.

5. a kind of towed elevator car guide rail braking system according to claim 1, characterized in that related organization's packet Driving swing arm, the driving sliding block being arranged on the caliper are included, one end and the driving sliding block of the driving swing arm are hinged, steel wire The pulling force of rope drives driving swing arm to swing, and then is moved in the up-down direction by driving sliding block band moving caliper；It is 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.

6. a kind of towed elevator car guide rail braking system according to claim 5, characterized in that descend two sides on the base It is respectively equipped with rectangular blocked hole, setting has the clamping set of the rectangle spliced eye in the blocked hole, and the gib block is suitable In the rectangle spliced eye for fitting over corresponding side clamping set, the middle part of clamping set lateral surface is equipped with the shaft shoulder of evagination, and clamping set is located at The lateral wall of shaft shoulder exterior portion is the square prism face fitted in corresponding blocked hole, and clamping set is located at shaft shoulder inboard portion Lateral wall be threadedly coupled there are two adjusting nut, caliper reset spring one end compresses the slider bar of corresponding side, another The clamping that end is socketed in corresponding side puts on and compresses adjusting nut, and four edges in square prism face are equipped with transition cylinder Face, 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.

7. a kind of towed elevator car guide rail braking system according to claim 1, characterized in that the position-limit mechanism packet Two locating clamp plates up and down that pedestal frontal left is set, two locating clamp plates up and down that the positive right side of face of pedestal is set are included, The sliding space that can accommodate inside and outside voussoir is formed between upper and lower two locating clamp plates, when inside and outside voussoir is upper in above-below direction When initial position, the locating clamp plate on top 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；The top of the caliper is equipped with block described in left and right two, under the caliper Portion is equipped with block described in left and right two, is equipped with sliding groove in the centre of block, the locating clamp plate is slidably disposed in corresponding In sliding groove, when caliper moves up, the block of caliper lower part drives up the interior voussoir of the locating clamp plate against pedestal lower part, 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 caliper moves down, The block on caliper top drives downwards the outer voussoir of the locating clamp plate against pedestal top, inside and outside voussoir phase in the up-down direction Mutually close, two interior voussoirs are close to each other and enter on-position.

8. a kind of towed elevator car guide rail braking system according to claim 1, characterized in that the detection device packet Electromagnet and the armature column by the solenoid actuated are included, the electromagnet is connected to power supply by electro-magnet control switch, institute The control terminal for stating electro-magnet control switch receives the control instruction of towed elevator control system, and the rack is on driving shaft It is equipped with electromagnet at one end far from driven shaft, sliding jack is equipped in driving shaft, is equipped in the sliding jack by the electricity The armature column of magnet driving, the end that the armature column protrudes into sliding jack are equipped with the extrusion head of cone, the driving shaft It is equipped with radial squeezing through-hole, described get rid of is hammered into shape close to the inner end of driving shaft equipped with the extruded segment fitted in squeezing through-hole, squeezed It presses the end of section to be equipped with and squeezes inclined-plane, when solenoid actuated armature column is moved to application position, the circular cone of armature column extrusion head Face paste is by squeezing inclined-plane, to make to get rid of hammer radial outward movement to final position.

9. a kind of towed elevator car guide rail braking system safety detection method is suitable for traction electricity as described in claim 1 Terraced car guide rail braking system, characterized in that the following steps are included:

Initial step, towed elevator control system keeps detection current car status, if meeting the testing requirements manually set Then enter detecting step,

Detecting step one, electromagnet are powered and generate magnetic attraction, so that armature column be made to overcome the elastic force of reset spring and be located at and slide The initial position of dynamic jack outer end；

Detecting step two, solenoid actuated armature column move inwardly into application position in sliding jack, armature column extrusion head Circular 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 from Limited block overlap joint on moving axis, driven shaft are engaged with driving shaft, realize the buffer deceleration to carriage and braking；

Detecting step three is uploaded to traction by the buffer deceleration state and braking distance of car status sensor group detection carriage Elevator control system, by towed elevator control system according to preset detecting state threshold comparison, if all parameters are default Detecting state threshold value in, then judge that safety is up to standard, otherwise by towed elevator control system issue security alarm.

10. a kind of towed elevator car guide rail braking system safety detection method according to claim 9, characterized in that

In the initial step, detection current car status includes at least the negative of current car position, carriage movement speed and carriage It carries,

The testing requirements manually set include at least preset time value, current car positional value, carriage movement speed value With the load value of carriage；

In detecting step three, the detecting state threshold value includes that buffer deceleration angle value, braking distance value and lower electromagnet actuation refer to The delay time value that buffer deceleration angle value first appears after order.