CN110436305A - A kind of towed elevator carriage emergency braking apparatus - Google Patents
A kind of towed elevator carriage emergency braking apparatus Download PDFInfo
- Publication number
- CN110436305A CN110436305A CN201810410884.6A CN201810410884A CN110436305A CN 110436305 A CN110436305 A CN 110436305A CN 201810410884 A CN201810410884 A CN 201810410884A CN 110436305 A CN110436305 A CN 110436305A
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- voussoir
- caliper
- interior
- block
- carriage
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- 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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- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of towed elevator carriage emergency braking apparatus, including pedestal, caliper associated with carriage, caliper is equipped with upper, lower stopper, voussoir in left and right is 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 one elastic positioning device makes, outer voussoir is close to each other, and it is interior, 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 lifting speed of carriage reaches normal speed, induction mechanism band moving caliper moves in the up-down direction, in block on caliper makes, the big end of outer voussoir is close to each other in the up-down direction, enter on-position to keep two interior voussoirs close to each other.The present invention can realize two-way emergency braking to carriage, while can realize that centering is braked, and brake apparatus is avoided to generate transverse shifting in braking process.
Description
Technical field
The present invention relates to the braking system technical fields of towed elevator, promptly make more particularly, to a kind of towed elevator carriage
Dynamic device.
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.
For example, one kind disclosed " progressive safety gear ", notification number CN2288164Y, packet in Chinese patent literature
The clamp block body with elastic element, one or two braking members with the guide rail contact of elevator are included, clamp block body uses simply supported beam
The planar spring of form is matched with braking member, and the planar spring of simply supported beam form is square equal cross-section.With small in size, at
This is low, and, accurate, safety stable to the adjusting of elastic force, well small to the damage of guide rail can be placed in straight beam lower end inside or lower beam-ends
The features such as portion.
However above-mentioned brake apparatus has following defects that firstly, since being positioned at car guide rail side in braking member
One irremovable pair of voussoir, the only main voussoir of the other side can move up and down in the up-down direction.Work as car speeding
When decline, corresponding induction mechanism can drive main voussoir vertical shift and close to a voussoir is paid, thus between primary and secondary voussoir
Car guide rail squeezed and form frictional resistance, and then realize carriage emergency braking.That is, in emergency braking
When, the braking surface of two voussoirs has an asymmetric transverse shifting with respect to car guide rail, since car guide rail is to fix not
Dynamic, therefore safety tongs must have the movement of a transverse direction in braking process to install fixed formation difficulty to it.Secondly
The safety tongs can only play the role of emergency braking to quickly moving down for carriage, but can not play emergency braking to the carriage rushed to summit
Effect.That is, needing to be arranged two sets of contrary safety tongs to improve the security performance of elevator, to cause whole
The complexity of body structure, while being unfavorable for installing and safeguard.Secondly, safety tongs, in entire braking process, main voussoir is unable to get
Lasting active force, that is to say, that main voussoir is formed by the lesser inclined-plane of angle mutually to recline between pair voussoir
Self-locking is maintained at application position.When the size of car guide rail changes or when error, will affect the braking effect of safety tongs
Fruit, and be difficult to reset self-locking main voussoir in follow-up maintenance.
Summary of the invention
The purpose of the present invention is to solve can not be to the quick of carriage present in existing elevator car braking apparatus
The problem of going up and down while realizing emergency braking and being difficult to realize centering braking, provides a kind of towed elevator carriage emergency braking
Device can realize two-way emergency braking to carriage, thus be conducive to simplify the structure of braking system, while can realize centering system
It is dynamic, avoid brake apparatus from generating transverse shifting in braking process.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of towed elevator carriage emergency braking apparatus, including pedestal are equipped with caliper moving up and down and bullet on the base
Property positioning device, the caliper pass through can sense carriage movement speed induction mechanism it is associated with the movement speed of carriage, institute
Caliper is stated equipped at least upper and lower two blocks, the two interior voussoirs in left and right, the interior voussoir phase are movably equipped in caliper
Pair 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, two
The interior driving inclined-plane of interior voussoir is arranged in splayed, is equipped with moveable outer voussoir, the inside of outer voussoir in the outside of interior voussoir
Face is the outer driving inclined-plane cooperated with interior driving inclined-plane, and the pedestal is equipped with the limit for limiting interior voussoir, outer voussoir position
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
The big end of interior 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 above-below direction
Upper limit is in initial position, the distance between braking surface of two interior voussoirs maximum at this time；When the lifting speed of carriage reaches volume
When constant speed is spent, induction mechanism band moving caliper moves in the up-down direction, and the block on caliper makes the big end of inside and outside voussoir upper and lower
It is close to each other on direction, to keep two interior voussoirs close to each other and enter on-position.
Sure brake system of the invention is arranged at the guide rail of carriage, specifically includes the two interior voussoirs in left and right and two
The braking surface for clamping car guide rail is arranged in the opposite side of two interior voussoirs in outer voussoir, when the interior voussoir in left and right two
When braking surface 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
Lower two sides, and elastic positioning device make interior voussoir interior driving inclined-plane and outer voussoir outer driving inclined-plane it is close to each other, therefore, In
Under the action of inside and outside driving inclined-plane, inside and outside voussoir is mobile towards respective big end side and is located remotely from each other in the up-down direction,
Position-limit mechanism at this time then makes the inside and outside voussoir initial position that upper limit is located remotely from each other at one in above-below direction.It is known that
Since inside and outside driving inclined-plane is bonded to each other, when interior voussoir is moved along the outer driving inclined-plane of outer voussoir, on the one hand meeting
There is the longitudinal movement of a up and down direction, on the other hand has the transverse shifting of a left and right directions.When carriage is with normal speed
When lifting, induction mechanism will not trigger caliper movement.When elevator failure makes carriage fast lifting, induction mechanism can then lead to
Crossing moves up or down caliper.In this way, the block on caliper can be driven interior voussoir it is mobile and close to outer voussoir, or drive
Dynamic outer voussoir is mobile and close interior voussoir, under the action of the inside and outside driving inclined-plane being bonded to each other, two interior voussoirs laterally to
Guide rail that is interior mobile and close to each other and clamping carriage, to realize the bi-directional braking to carriage, that is to say, that the present invention can be same
Shi Shixian occurs rushing to summit and the safety failure at crouching bottom to the bi-directional braking of carriage to avoid carriage, is conducive to simplify braking system
Structure.It is understood that the interior voussoir in left and right two of the invention is arranged symmetrically, and therefore, when caliper moves up and down,
The synchronous symmetric transverse of the interior voussoir in left and right two can be made mobile, it is ensured that the braking center of brake apparatus is constant, therefore, in emergency braking
When can avoid brake apparatus and lateral displacement occur, and then can make brake apparatus that can realize with carriage and simply be fixedly connected.Especially
It is that caliper is associated with the movement speed of carriage by the induction mechanism that can sense carriage movement speed, therefore, when carriage is thorough
Bottom braking before, caliper can obtain an active force always, keep it in application position, therefore, we can correspondingly increase in,
The inclination angle of outer driving inclined-plane, to avoid locking phenomenon occur between inside and outside voussoir.
Preferably, the induction mechanism includes the mechanical speed sensing device that can sense carriage movement speed, by machine
The output shaft of tool formula speed sensing device driving, the side on the caliper are equipped with driving sliding block, one end of a driving swing arm
It is connected on the output shaft, the other end of swing arm is driven to be hinged by articulated shaft and driving sliding block, when output shaft rotation,
Driving swing arm can be driven to swing, and then moved in the up-down direction by driving sliding block band moving caliper.
Driving swing arm is convenient to for swings of output shaft to be converted into drive the movement of sliding block, so can be with moving caliper above and below
It is mobile.It is understood that mechanical speed sensing device reliability with higher, in particular, there is the event that has a power failure in elevator
When barrier, its regular event can be still kept.
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.
Since the lateral wall that clamping set is located on the outside of the shaft shoulder is the square prism face fitted in corresponding blocked hole,
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 cylinder
Face, correspondingly, corresponding fillet can be arranged in the edge of the rectangular blocked hole of pedestal in we, consequently facilitating blocked hole adds
Work, 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
It is convenient to the preload elastic force of adjustment caliper reset spring, to can ensure that caliper is positioned exactly on intermediate initial position.
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 elastic positioning device includes the two outer voussoir reset springs in left and right and several special-shaped tension springs,
Outer voussoir reset spring lower end compresses pedestal, and upper end compresses the small end of the outer voussoir of corresponding side, to make the big end of outer voussoir
Against the locating clamp plate of a corresponding upper lateral part, the abnormity tension spring is in the snakelike of left and right reciprocating and turning-back, at the both ends of special-shaped tension spring
It is bent to form inserting section, is respectively equipped with spliced eye on the surface of inside and outside voussoir, the inserting section at the abnormity tension spring both ends is inserted respectively
It connects in the spliced eye of inside and outside voussoir, the initial position for the locating clamp plate that special-shaped tension spring is located at interior voussoir against lower part, at this time
Spliced eye on interior voussoir is higher than corresponding spliced eye on outer voussoir.
It is known that when making inside and outside voussoir horizontally one extruding force of formation close to each other by a tension spring,
Under the action of interior driving inclined-plane and outer driving inclined-plane, interior voussoir can move in the longitudinal direction relative to outer voussoir, make the big of interior voussoir
It holds the big end far from outer voussoir and is in initial position against locating clamp plate.And existing tension spring is generally cylindrical, when me
When the surface of inside and outside voussoir is arranged in tension spring, biggish space can be occupied.The present invention creatively devises snakelike different
Shape tension spring, so that special-shaped tension spring be made to reduce its space occupied with can dramatically, conveniently install and use in flat.
Therefore, the invention has the following beneficial effects: can realize two-way emergency braking to carriage, thus be conducive to simplify system
The structure of dynamic system, while can realize that centering is braked, avoid brake apparatus from generating transverse shifting in braking process.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram at the back side of the present invention.
Fig. 3 is the mounting structure schematic diagram that caliper reset spring decomposes.
Fig. 4 is a kind of side sectional view of mechanical speed sensing device.
Fig. 5 is the front section view of mechanical speed sensing device.
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 23, spring base 24, articulated linkage 3, output shaft 31, limited block 311, second are oblique
Face 32, governor spring 33, overlap joint sleeve 34, driving swing arm 4, base 41, clamping set 411, the shaft shoulder 42, lock
Tight 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 are multiple
Position spring 6, interior voussoir 61, braking surface 62, interior driving inclined-plane 7, outer voussoir 71, outer driving inclined-plane 8, braking volume
Spring.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of towed elevator carriage emergency braking apparatus, it is suitable for the carriages in traction elevator
There is emergency braking when fast lifting, to ensure the safe handling of elevator.It specifically includes pedestal 4, be movably disposed at base
The positive caliper 5 of seat and elastic positioning device, caliper are related to carriage by the induction mechanism that can sense carriage movement speed
Connection, that is to say, that when carriage is gone up and down with normal speed, induction mechanism will not drive caliper to act；When carriage because elevator occurs
When failure leads to fast lifting, induction mechanism movement, to be moved up and down with moving caliper.
In the front of caliper, upper and lower two blocks 51, the moving area being made of on caliper upper and lower block are at least set
The two interior voussoirs 6 in left and right are inside movably arranged side by side, the opposite inner side plane of interior voussoir is the system for braking car guide rail
Dynamic face 61, the lateral surface that interior voussoir is located remotely from each other is the interior driving inclined-plane 62 being inclined outwardly from top to bottom, to make two interior wedges
The interior driving inclined-plane of block is arranged in positive splayed.That is, interior voussoir is the wedge piece that upper end is small, lower end is big.In addition, In
Moveable outer voussoir 7 is arranged in the outside of interior voussoir, and the medial surface of close interior voussoir is on outer voussoir and interior driving inclined-plane cooperates
Outer driving inclined-plane 71, thus make outer voussoir upper end it is big, under short and small wedge piece.
Also, it would be desirable to which the limit for limiting interior voussoir, the position of outer voussoir in the up-down direction is set on the base
Position mechanism, and on the one hand elastic positioning device is located remotely from each other the big end of interior voussoir and the big end of outer voussoir in the up-down direction,
On the other hand the outer driving inclined-plane of the interior driving inclined-plane and outer voussoir that make interior voussoir is close to each other, and position-limit mechanism at this time makes interior wedge
The big end of block is located at the lowermost initial position, and the big end of outer voussoir is then located at the initial position of the top, correspondingly, in two
The carriage of the distance between braking surface of voussoir maximum, elevator can be freely lifted.When the revolving speed of driving shaft meet or exceed it is specified
When revolving speed, induction mechanism movement, to move up or move down with moving caliper.If caliper moves up, under caliper
The block in portion pushes up interior voussoir, to keep interior voussoir inside while keeping inside and outside voussoir close to each other in the up-down direction
Side 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.If caliper is to moving down
Dynamic, then the block on caliper top pushes down on outer voussoir, thus while keeping inside and outside voussoir close to each other in the up-down direction,
And then making interior voussoir transverse shifting inwardly, two interior voussoirs are close to each other and enter and clamp down on the braking shape of car guide rail at this time
State.It is understood that we can the left and right sides of caliper be arranged recline corresponding side outer voussoir limited block 52, from
And outer voussoir can be limited and moved outward.In addition, we can between outer voussoir and limited block and in inside and outside voussoir,
Needle roller is arranged between outer driving inclined-plane to arrange, so as to reduce mutual frictional resistance, avoids blocking between inside and outside voussoir
Dead locking phenomenon is conducive to the reset of the emergency braking apparatus after elevator faults release.
In order to ensure the energy proper function in elevator power failure, induction mechanism of the invention includes that can sense the mobile speed of carriage
The mechanical speed sensing device of degree, the output shaft 3 driven by mechanical speed sensing device are arranged one in the side of caliper
Sliding block 53 is driven, and the setting driving swing arm 34 between output shaft and driving sliding block, one end of swing arm is driven radially to be connected to
On output shaft, the other end of swing arm is driven to be hinged by articulated shaft and driving sliding block.When carriage fast lifting, mechanical speed
Sensing device driving output shaft rotation is spent, to drive driving swing arm to swing, and then by driving sliding block band moving caliper upper and lower
It is moved on direction.Since driving swing arm can make the displacement for driving sliding block to form a transverse direction when swinging up and down, Wo Menke
The sliding slot of one transverse direction is set at the back side of caliper, driving sliding block fits in sliding slot.When driving swing arm to swing up and down
It is moved up and down by the driving sliding block band moving caliper hinged with it.At the same time, driving sliding block can be in the sliding slot at the caliper back side
Form one or so transverse shifting.
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.It is driven when the swing of driving swing arm drives
Movable slider is mobile and then when moving up and down with moving caliper, driving swing arm and drives the articulated shaft of sliding block that can slide at upper and lower two
Transverse shifting between item, 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 3, 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.
As shown in Figure 4, Figure 5, the active that mechanical speed sensing device of the invention includes rack 1, is arranged on the rack
Axis 2 and driving shaft coaxially arranged output shaft 3 and the centrifugal clutching structure that is arranged between output shaft and driving shaft, it is main
A pulley 21 is keyed on moving axis, the wirerope for drawing carriage is wound around pulley.When carriage lifting, wirerope is
Pulley rotation can be driven, and then drives driving shaft rotation, and the rotation of driving shaft and the lifting speed of carriage are linear.
When the revolving speed of driving shaft meets or exceeds a rated value, centrifugal clutching structure can be in the effect of centrifugal force
Under engage driving shaft and output shaft, driving shaft can be driven output shaft synchronous rotation；When the revolving speed of driving shaft is lower than specified
When value, centrifugal clutching structure makes driving shaft and output shaft be in discrete state, and driving shaft dallies at this time, and output shaft is then in
Stationary state.
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 output 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 output shaft at this time is in discrete state.When turning for driving shaft
When dynamic, centrifugal force makes to get rid of to hammer into shape to be moved outwards along slippage slot, and getting rid of hammer moves spring base diameter inwardly by articulated linkage, tune at this time
Fast spring is compressed；When the revolving speed of driving shaft meets or exceeds rated speed, it is outside along slippage slot diameter that centrifugal force makes to get rid of hammer
It is moved away from the final position of driving shaft, get rid of hammer then makes spring base diameter move inward to the termination close to driving shaft by articulated linkage
The outer end of hammer is got rid of against limited block in position, and output shaft follows 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 output shaft is set close to driving shaft one end
An overlap joint sleeve 33 is set, 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 output 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.
Good buffering effect when in order to realize safe clamp brake, we can be such that output shaft and overlap joint sleeve shaped connects at rotation
It connects, is fixedly connected with a limit sleeve 11 on the rack, protruded into limit sleeve from one end far from driving shaft is exported, and in output shaft
Gap is formed between limit sleeve, the part that output shaft protrudes into limit sleeve is arranged a braking wind spring 8, brake one end of wind spring with
Overlap joint sleeve is fixedly connected, and the other end for braking wind spring is fixedly connected with output shaft, which constitutes damping spring, from
And make that resilient engagement can be formed between driving shaft and output shaft.
When car speeding lifting, pulley is engaged with overlap joint sleeve, overlaps sleeve rotation to drive, at this time lap joint sleeve
Cylinder drives output shaft rotation by braking wind spring, and then band moving caliper acts output shaft, and two interior voussoirs clamp car guide rail, in turn
Start the braking to car guide rail.When pulley continues to rotate, since driven shaft can not rotate at this time, pulley and driven
It is formed and is relatively rotated between axis, braking wind spring is gradually tightened or gradually loosened, and correspondingly, pulley is passed to by braking wind spring
The torque of output shaft is gradually increased, and the active force that output shaft passes to caliper is gradually increased, and then interior voussoir is made to be formed by system
Kinetic force of friction is gradually increased, and forms static friction between pulley and wirerope at this time.When braking wind spring finally tightly around on driven shaft,
Or when being tightly attached on the inner sidewall of limit sleeve, pulley can not be continued to rotate with respect to output shaft, be formed between wirerope and pulley
Dynamic friction, pulley at this time export maximum torque, braking friction of the safety tongs to car guide rail by exporting axial caliper
Reach maximum.
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.
Claims (7)
1. a kind of towed elevator carriage emergency braking apparatus, including pedestal, characterized in that be equipped on the base moving up and down
Caliper and elastic positioning device, the caliper pass through the mobile speed of the induction mechanism and carriage that can sense carriage movement speed
Degree is associated, and the caliper is equipped at least upper and lower two blocks, and the two interior voussoirs in left and right are movably equipped in caliper,
The opposite plane of the interior voussoir is the braking surface for braking, and the lateral surface that interior voussoir is located remotely from each other is the interior drive being inclined outwardly
The interior driving inclined-plane on dynamic inclined-plane, two interior voussoirs is arranged in splayed, is equipped with moveable outer voussoir in the outside of interior voussoir, outside
The medial surface of voussoir is the outer driving inclined-plane cooperated with interior driving inclined-plane, and the pedestal is equipped with for limiting interior voussoir, outer wedge
The position-limit mechanism of block position, the elastic positioning device make interior voussoir interior driving inclined-plane and outer voussoir outer driving inclined-plane it is mutual
It is close, 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, and position-limit mechanism makes inside and outside voussoir exist
Up and down direction upper limit is in initial position, the distance between braking surface of two interior voussoirs maximum at this time；When the lifting speed of carriage
When degree reaches normal speed, induction mechanism band moving caliper moves in the up-down direction, and the block on caliper makes the big of inside and outside voussoir
End is close to each other in the up-down direction, to keep two interior voussoirs close to each other and enter on-position.
2. a kind of towed elevator carriage emergency braking apparatus according to claim 1, characterized in that the induction mechanism packet
Include the mechanical speed sensing device that can sense carriage movement speed, the output shaft driven by mechanical speed sensing device, In
Side on the caliper is equipped with driving sliding block, and one end of a driving swing arm is connected on the output shaft, drives the another of swing arm
One end is hinged by articulated shaft and driving sliding block, when output shaft rotation, driving swing arm can be driven to swing, and then pass through drive
Movable slider band moving caliper moves in the up-down direction.
3. a kind of towed elevator carriage emergency braking apparatus according to claim 1, characterized in that on the base coaxially
Equipped with upper and lower two vertical rectangle spliced eyes, gib block is fitted in rectangle spliced eye, upper and lower two gib blocks mutually lean on
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 or more
Two sides are arranged with caliper reset spring on the gib block.
4. a kind of towed elevator carriage emergency braking apparatus according to claim 3, 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.
5. a kind of towed elevator carriage emergency braking apparatus 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.
6. a kind of towed elevator carriage emergency braking apparatus according to claim 1, characterized in that the top of the caliper
Equipped with block described in left and right two, the lower part of the caliper is equipped with block described in left and right two, is equipped in the centre of block
Sliding groove, the locating clamp plate are slidably disposed in corresponding sliding groove, and when caliper moves up, the block of caliper lower part drives upwards
The interior voussoir of the dynamic 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 mutual
Close to and into on-position；When caliper moves down, the block on caliper top drives downwards the locating clamp plate against pedestal top
Outer voussoir, 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.
7. a kind of towed elevator carriage emergency braking apparatus according to claim 1, characterized in that the flexibly positioned dress
It sets including the two outer voussoir reset springs in left and right and several special-shaped tension springs, outer voussoir reset spring lower end compresses pedestal, upper end
The small end of the outer voussoir of corresponding side is compressed, thus make the big end of outer voussoir against the locating clamp plate of a corresponding upper lateral part, it is described
Special-shaped tension spring is snakelike in left and right reciprocating and turning-back, inserting section is bent to form at the both ends of special-shaped tension spring, on the surface of inside and outside voussoir
It is respectively equipped with spliced eye, the inserting section at the abnormity tension spring both ends is plugged on respectively in the spliced eye of inside and outside voussoir, special-shaped tension spring
The initial position for the locating clamp plate for being located at interior voussoir against lower part, the spliced eye on interior voussoir is higher than corresponding on outer voussoir at this time
Spliced eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410884.6A CN110436305A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator carriage emergency braking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410884.6A CN110436305A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator carriage emergency braking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110436305A true CN110436305A (en) | 2019-11-12 |
Family
ID=68428019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810410884.6A Pending CN110436305A (en) | 2018-05-02 | 2018-05-02 | A kind of towed elevator carriage emergency braking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110436305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538239A (en) * | 2022-02-25 | 2022-05-27 | 浙江智菱科技有限公司 | Safe elevator lifting system |
-
2018
- 2018-05-02 CN CN201810410884.6A patent/CN110436305A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114538239A (en) * | 2022-02-25 | 2022-05-27 | 浙江智菱科技有限公司 | Safe elevator lifting system |
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