CN105236234A - Travel-reduced bidirectional speed limiting system capable of preventing car sliding automatically - Google Patents
Travel-reduced bidirectional speed limiting system capable of preventing car sliding automatically Download PDFInfo
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- CN105236234A CN105236234A CN201510692409.9A CN201510692409A CN105236234A CN 105236234 A CN105236234 A CN 105236234A CN 201510692409 A CN201510692409 A CN 201510692409A CN 105236234 A CN105236234 A CN 105236234A
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Abstract
The invention discloses a travel-reduced bidirectional speed limiting system capable of preventing car sliding automatically. An encoder is mounted on a spindle of a speed limiting device of the speed limiting system. A rope wheel is assembled on the spindle, a pawl is rotatably assembled on one side of the wheel surface of the rope wheel, and a pawl torsional spring enabling the pawl to turn to a ratchet wheel to be clamped in a clamping groove of the ratchet wheel is arranged between the pawl and the rope wheel; a pawl positioning structure is further rotatably assembled on the wheel surface of the rope wheel, a disk is coaxially and fixedly arranged on the wheel surface, away from a gravity hammer, of the ratchet wheel, self-reset switches are distributed on the outer edge of the disk and located on the circumference of a circle concentric with the disk, and levers of the self-reset switches stretch to the inner side; the free ends of the levers are located on the circumferences of a set of concentric circles of the disk, and the gravity hammer touches the self-reset switches in sequence in the opening process. According to the travel-reduced bidirectional speed limiting system capable of preventing car sliding automatically, top space and bottom space of an elevator in a corresponding building do not need to be expanded extra, and meanwhile the purpose of adopting an elevator with a higher speed can be achieved under the condition that the cost of a buffer does not need to be increased.
Description
Technical field
The present invention relates to a kind of safety speed-limit system for limiting elevator speed, particularly relating to one and subtracting stroke bidirectional automatic anti-running car speed limiting system.
Background technology
Along with the lifting of socioeconomic development and people's levels of substance, skyscraper gets more and more, the command speed of elevator is also more and more higher, due to buffer stroke and speed proportional, this just means that elevator speed is higher, and required buffer stroke is larger, head room and the bottom space of elevator are higher, not only increase the cost of energy disperser, also can greatly increase building difficulty, waste building area.
Current elevator is generally fast with descending stair at 2.5m/s, and buffer of elevator selects according to rated speed of lift.
energy disperserbe to provide the elevator car safety of last a kind of safety guard-safeguard.It is arranged in the well pit of elevator, is positioned at immediately below car and counterweight.When elevator is in motion up or down, due to
steel ropefracture, traction friction force, brake sticking brake power are not enough or
control systemmalfunctioning and surmount terminal stop bottom or top layer time, will by energy disperser buffer action, to avoid lift car or counterweight directly hit the end or rush to summit, protection passenger and the safety of equipment.
If a kind of technical scheme can be provided, do not needing the head room and the bottom space that additionally increase elevator, when not needing to increase energy disperser cost simultaneously, building just can made to adopt the elevator of more speed, this current predicament can be abolished.This just requires that speed lowers when running to above energy disperser by lift car, and the speed of elevator just can reduce by velocity limiter.
Of the prior art have a kind of such bidirectional speed limiter, so-called bidirectional speed limiter be exactly ascending for elevator and descending time the velocity limiter that can play a role, comprise base, base is equipped with rope sheave and ratchet by main axis, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, and one end of main shaft is provided with coder, and rope sheave is arranged with steel rope.The diameter of ratchet is less than the diameter of rope sheave, the wheel face of rope sheave is rotatably equipped with ratchet, torsion spring is provided with between ratchet and rope sheave, torsion spring, to Pawl Torsion, makes ratchet rotate and has the trend of joining with the draw-in groove card of ratchet all the time, when ratchet is in free state, ratchet and ratchet can be in the state of clamping, the termination of ratchet is convexly equipped with a fixture block, the both sides of fixture block can two cell wall blocks of draw-in groove, prevent ratchet on cw and conter clockwise both direction relative to detent.Rope sheave also rotates and is provided with ratchet location structure, ratchet location structure has a top pressure side, this pressure side top, top is pressed on ratchet, ratchet is made to be in the normal condition decontroling ratchet, between ratchet location structure and rope sheave, there is torsion spring, torsion spring compresses the power of ratchet for ratchet location structure provides, ratchet is made to overcome torsion spring power on it, keep the state be separated with ratchet, rope sheave is also rotatably equipped with two gravity drop hammers, ratchet and ratchet location structure are in the side of rope sheave, and two gravity drop hammers are in the other side of rope sheave.The set-up mode of two gravity drop hammers on rope sheave is centrosymmetric mode, the run-on point of gravity drop hammer is not in two ends, one end quality more greatly tup end of gravity drop hammer, other end quality is less is hammer handle end, compression-spring device is provided with between the hammer handle end of a gravity drop hammer and rope sheave, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, connecting rod is connected with between the tup portion and the hammer handle portion of another gravity drop hammer of this gravity drop hammer, the two ends of connecting rod are hinged with two gravity drop hammers respectively, when rope sheave normal rotation, under the effect of compression-spring device, the tup portion of two gravity drop hammers is all in the centre of rope sheave.When rope sheave overspeed operation, under the influence of centrifugal force, the spring force that two gravity drop hammers can overcome compression-spring device opens, and two tups all can turn to the edge of rope sheave, and two hammer handles turn to the center of rope sheave.Ratchet location structure has the trigger unit through rope sheave, when the tup of gravity drop hammer turns to the outer rim of rope sheave, gravity drop hammer is to the top of projection in the pressure trigger unit of top, the power making ratchet location structure overcome its torsion spring is rotated, ratchet location structure compresses ratchet, ratchet is made to continue to rotate to the direction away from ratchet, along with the increase of rotation distance, ratchet location structure can decontrol ratchet, ratchet is stuck with ratchet under the effect of its torsion spring, after ratchet location structure decontrols ratchet, ratchet will be crossed ratchet location structure and keep off ratchet location structure conversely, ratchet location structure can not be resetted, at this moment, ratchet location structure pushes up pressure ratchet under the effect of torsion spring power, ratchet failure-free is made to be in the state with ratchet buckle, in this state, it is made to rotate lasting rotation to the direction away from ratchet if move ratchet, ratchet will be separated with ratchet location structure, ratchet location structure is return under the effect of its torsion spring, at this moment ratchet is decontroled, ratchet location structure will be located with ratchet.When ratchet failure-free is in the state with ratchet buckle, rope sheave drives pawl wheel by ratchet.Both sides in rope sheave on base are provided with brake plate device, the slipper of two brake plate devices is provided with pull bar, one end of pull bar is located on slipper, the side that two slippers are relative with rope sheave is medial surface, another side is lateral surface, has outside spring in the arranged outside of slipper, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end top of outside spring is pressed on the bulge loop on the termination of pull bar, and other one end handing-over of pull bar is on the wheel face of ratchet.When elevator rises, rope sheave rotates toward a direction, and after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and rotated, ratchet drives corresponding slipper to press to rope sheave when rotating by a pull bar, realize the braking of rope sheave, when rising under elevator, rope sheave rotates toward another direction, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives another corresponding slipper to press to rope sheave when rotating by another pull bar, realizes the braking of rope sheave.Ratchet is convexly equipped with to press with the hammer handle top of gravity drop hammer when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and ratchet is separated with ratchet and makes the lifting reset lever of ratchet location structure and ratchet pawl reset, reduce in the speed of rope sheave, after the speed of car lowers, gravity drop hammer can reset under the effect of reseting pressuring spring, at this moment the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave, ratchet is separated with ratchet, and velocity limiter automatically resets.Base is also provided with electromagnet, pressure gravity drop hammer can be pushed up when electromagnet is energized, gravity drop hammer is opened, ratchet and pawl is allowed to be fastened togather, realize the forced brake of rope sheave, when elevator breaks down, need the braking manually realizing rope sheave, at this moment, the braking of rope sheave just can be realized to electromagnet energising.
Summary of the invention
The object of this invention is to provide one and subtract stroke bidirectional automatic anti-running car speed limiting system, the mode of braking rope sheave can be passed through for car speed limit to make velocity limiter, thus make corresponding building not need additionally to increase head room and the bottom space of elevator, when not needing to increase energy disperser cost, just can adopt the elevator of more speed simultaneously.
In order to realize above object, the present invention adopts following technical scheme: one subtracts stroke bidirectional automatic anti-running car speed limiting system, comprise and subtract journey controller, velocity limiter, car top set position detection unit, car bottom set position detection unit, described velocity limiter comprises base, base is equipped with rope sheave and ratchet by main axis, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, main shaft is provided with coder, both sides in rope sheave on base are provided with brake plate device, the side of the wheel face of rope sheave is rotatably equipped with ratchet, the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined is provided with between ratchet and rope sheave, the wheel face of rope sheave is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the top pressure side of ratchet location structure and pawl spring top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, base is also provided with the electromagnet that top pressure gravity drop hammer after powered up makes gravity drop hammer open, the trigger unit of ratchet location structure is convexly equipped with when the tup of gravity drop hammer turns to the outer rim of rope sheave and the top of power hammer press-fit, ratchet is convexly equipped with to press with the hammer handle top of gravity drop hammer when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and ratchet is separated with ratchet and makes the lifting reset lever of ratchet location structure and ratchet pawl reset, described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim position of disc is laid with self-resetting switch, it is circumferentially concentrically ringed that each self-resetting switch is in of disc, the lever of each self-resetting switch stretches to inner side, it is circumferentially concentrically ringed that the free end of each lever is in a group of disc respectively, gravity drop hammer touches each self-resetting switch successively in the process of opening, described coder is used for transmitting with elevator master control unit being connected, elevator master control unit is connected with magnet control, car top set position detection unit is installed in Kong Su position, elevator hoistways top, and car bottom set position detection unit is installed in bottom elevator hoistways and controls fast position, the signal output part of car top set position detection unit connects the car top set signal input part subtracting journey controller, the signal output part of car bottom set position detection unit connects the car bottom set signal input part subtracting journey controller, the signal output part of self-resetting switch connects the car Control for Speed Limitation signal input part subtracting journey controller, subtracts the speed-slackening signal mouth of journey controller for connecting the speed-slackening signal input end of elevator master control system.
Described disc is sheet ring body, and on the inner hole wall of disc, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.
Described self-resetting switch is fixed on disc by connecting strap, and each connecting strap radial direction extends and is wholely set with disc.
Described Self-resetting speed limiting switch is connected to the car Control for Speed Limitation signal input part subtracting journey controller.
Described car top set position detection unit adopts the first travel switch, car bottom set position detection unit adopts the second travel switch, first travel switch is arranged on the well enclosure of top, lift car outer wall relevant position/be equiped with for coordinate with the first travel switch bump against hit bow; Second travel switch be arranged on bottom well enclosure on, lift car outer wall relevant position be equiped with for coordinate with the second travel switch bump against hit bow.
The described journey controller that subtracts adopts microcontroller, and the speed-slackening signal mouth of microcontroller is for connecting the brake control signal input end in elevator master control system.
The present invention is by the speed of car Control for Speed Limitation unit Real-Time Monitoring car, when car top set position detection unit or car bottom set position detection unit detect that car arrives this position, output signal to and subtract journey controller, subtract after journey controller receives this signal, judge the whether action of current velocity limiter, if now velocity limiter action, subtract journey controller and output signal to elevator master control system at once, control elevator brake, make elevator out of service before arrival energy disperser, thus realize making corresponding building not need additionally to increase head room and the bottom space of elevator, when not needing to increase energy disperser cost simultaneously, just can adopt the object of more speed elevator.Ratchet of the present invention is provided with disc, the outer rim position of disc is laid with self-resetting switch, it is circumferentially concentrically ringed that each self-resetting switch is in of disc, the lever of each self-resetting switch stretches to inner side, it is circumferentially concentrically ringed that the free end of each lever is in a group of disc respectively, gravity drop hammer touches each self-resetting switch successively in the process of opening, after touching self-resetting switch, self-resetting switch will output signal to and subtract journey controller, subtract after journey controller receives this signal, judge the whether action of current car Control for Speed Limitation unit, if now car Control for Speed Limitation unit action, subtract journey controller and output signal to elevator master control system at once, control elevator brake, make elevator out of service before arrival energy disperser, thus realize making corresponding building not need additionally to increase head room and the bottom space of elevator, when not needing to increase energy disperser cost simultaneously, just can adopt the object of more speed elevator.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embodiment of the present invention;
Fig. 2 is the schematic circuit diagram of the embodiment of the present invention;
Fig. 3 assembles schematic diagram with the corresponding of first, second travel switch shown in Fig. 2 for car;
Fig. 4 is the integral structure schematic diagram of the velocity limiter of the embodiment of the present invention;
Fig. 5 is the assembling schematic diagram of rope sheave, ratchet and disc in Fig. 4;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the right elevation of Fig. 5;
Fig. 8 is the exploded view of rope sheave in Fig. 4 and ratchet;
Fig. 9 is the automatic anti-running car control chart of the elevator device that embodiments of the invention are applied.
Detailed description of the invention
A kind of embodiment subtracting stroke bidirectional automatic anti-running car speed limiting system, in Fig. 1 ~ 8, comprise and subtract journey controller, velocity limiter, car top set position detection unit, car bottom set position detection unit, here velocity limiter is bidirectional speed limiter, so-called bidirectional speed limiter be exactly ascending for elevator and descending time the velocity limiter that can play a role, base 1 is equipped with rope sheave 2 and ratchet 3 by main axis, the two ends of main shaft are arranged on base 1 by bearing, rope sheave 2 spline is assemblied on main shaft, one end of main shaft is provided with coder, and rope sheave 2 is arranged with steel rope.The diameter of ratchet 3 is less than the diameter of rope sheave 2, the wheel face of rope sheave 2 is rotatably equipped with ratchet 4, torsion spring is provided with between ratchet 4 and rope sheave 2, torsion spring is to ratchet 4 torsion, ratchet 4 is rotated there is the trend of joining with the draw-in groove card of ratchet 3 all the time, when ratchet 4 is in free state, ratchet 4 and ratchet 3 can be in the state of clamping, rope sheave 2 also rotates and is provided with ratchet location structure 6, ratchet location structure 6 has a top pressure side, this pressure side top, top is pressed on ratchet 4, ratchet 4 is made to be in the normal condition decontroling ratchet 3, between ratchet location structure 6 and rope sheave 2, there is torsion spring, torsion spring compresses the power of ratchet 4 for ratchet location structure 6 provides, ratchet 4 is made to overcome torsion spring power on it, keep the state be separated with ratchet 3, rope sheave 2 is also rotatably equipped with two gravity drop hammers 5, ratchet 4 and ratchet location structure 6 are in the side of rope sheave 2, two gravity drop hammers 5 are in the other side of rope sheave 2.The set-up mode of two gravity drop hammers 5 on rope sheave 2 is centrosymmetric mode, the run-on point of gravity drop hammer 5 is not in two ends, one end quality more greatly tup end of gravity drop hammer 5, other end quality is less is hammer handle end, compression-spring device 11 is provided with between the hammer handle end of a gravity drop hammer 5 and rope sheave 2, compression-spring device 11 makes the tup end of gravity drop hammer 5 be in the centre of rope sheave 2, connecting rod 10 is connected with between the tup portion and the hammer handle portion of another gravity drop hammer 5 of this gravity drop hammer 5, the two ends of connecting rod 10 are hinged with two gravity drop hammers 5 respectively, when rope sheave 2 normal rotation, under the effect of compression-spring device 11, the tup portion of two gravity drop hammers 5 is all in the centre of rope sheave 2.When rope sheave 2 overspeed operation, under the influence of centrifugal force, the spring force that two gravity drop hammers 5 can overcome compression-spring device 11 opens, and two tups all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2.Ratchet location structure 6 has the trigger unit through rope sheave 2, when the tup of gravity drop hammer 5 turns to the outer rim of rope sheave 2, gravity drop hammer 5 is to the top of projection in the pressure trigger unit of top, the power making ratchet location structure 6 overcome its torsion spring is rotated, ratchet location structure 6 compresses ratchet 4, ratchet 4 is made to continue to rotate to the direction away from ratchet 3, along with the increase of rotation distance, ratchet location structure 6 can decontrol ratchet 4, ratchet 4 is stuck with ratchet 3 under the effect of its torsion spring, after ratchet location structure 6 decontrols ratchet 4, ratchet 4 will be crossed ratchet location structure 6 and keep off ratchet location structure 6 conversely, ratchet location structure 6 can not be resetted, at this moment, ratchet location structure 6 pushes up pressure ratchet 4 under the effect of torsion spring power, ratchet 4 failure-free is made to be in the state with ratchet 3 buckle.In this state, if the buckle between ratchet 4 and ratchet 3 will be contacted.Ratchet 4 and ratchet location structure 6 are replied and mutually pushes up pressure, when making ratchet 4 remain on the state be separated with ratchet 3, just can move ratchet 4 makes it rotate lasting rotation to the direction away from ratchet 3, ratchet 4 will be separated with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, and both are returned to initial condition.Base 1 is provided with brake plate device in the both sides of rope sheave 2, the slipper of two brake plate devices is provided with pull bar, one end of pull bar is located on slipper, the side that two slippers are relative with rope sheave 2 is medial surface, another side is lateral surface, has outside spring in the arranged outside of slipper, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end top of outside spring is pressed on the bulge loop on the termination of pull bar, and other one end handing-over of pull bar is on the wheel face of ratchet 3.When elevator rises, rope sheave 2 rotates toward a direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, ratchet 3 drives corresponding slipper to press to rope sheave 2 when rotating by a pull bar, realize the braking of rope sheave 2, when rising under elevator, rope sheave 2 rotates toward another direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, and ratchet 3 drives another corresponding slipper to press to rope sheave 2 when rotating by another pull bar, realizes the braking of rope sheave 2.
Ratchet 4 is convexly equipped with lifting reset lever 7, lifting reset lever 7 is perpendicular to the wheel face of rope sheave 2, here rope sheave 2 is wheel hub dress, just there iing wheel rim, have core wheel, be linked to be an entirety between core wheel and wheel rim by spoke, lifting reset lever 7 is passed by between two spokes, the hammer handle of gravity drop hammer 5 offers functional hole 9, and lifting reset lever 7 is passed by functional hole 9 after passing between two spokes again.The hammer handle of gravity drop hammer 5 is fixed with top pinch roller 8 by being located in helicitic texture in functional hole 9, when gravity drop hammer 5 resets, namely when the hammer handle of gravity drop hammer 5 turns to the wheel rim of rope sheave 2, top pinch roller 8 can push up pressure lifting reset lever 7, namely drive ratchet 4 to make it rotate to the direction away from ratchet 3 to continue to rotate, ratchet 4 will be separated with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment ratchet 4 is decontroled, ratchet location structure 6 will be located with ratchet 4, both are returned to initial condition, realize automatically reseting of ratchet 4.
Due to functional hole 9 on the hammer handle that lifting reset lever 7 is through gravity drop hammer 5, in motion process, lifting reset lever 7 can be moved relative to the hammer handle of gravity drop hammer 5, so functional hole 9 need to have dodge lifting reset lever 7 dodge part, dodge part and lifting reset lever 7 can be made to move freely relative to gravity drop hammer 5.
The wheel face of ratchet 3 away from gravity drop hammer 5 is coaxially fixedly installed disc 12, and disc 12 is sheet ring body, and on the inner hole wall of disc 12, radial direction is laid with fixing calvus 16, and fixing calvus 16 is fixed by screws on disc.The outer rim of disc 7 is laid with connecting strap 13, connecting strap 13 and disc 12 are wholely set, and connecting strap 13 is coplanar with disc 12, each connecting strap 13 is fixed with self-resetting switch 14, each self-resetting switch 14 is in one circumferentially, this circumference is a concentric circles of disc 12, the lever 15 of each self-resetting switch 14 stretches to inner side, the free end of each lever 15 be in respectively one group circumferentially concentrically ringed, this group concentric circles is all concentric circless of disc, gravity drop hammer touches each self-resetting switch 14 successively in the process of opening, long first the touching of lever, touch after lever is short.
Base 1 is also provided with electromagnet, and after powered up, electromagnet can push up pressure gravity drop hammer, and two gravity drop hammers are opened, and namely makes the heavier tup of gravity drop hammer turn to the outer rim of rope sheave, realizes the forced brake of rope sheave.Fig. 9 is the automatic anti-running car control chart of the elevator device that the present embodiment is applied, and when elevator parking, the traction caused owing to overloading is not enough, overload the braking force deficiency caused, the steel rope abrasion that elevator maintenance causes not in time or greasy dirt, cause towing machine not enough, or the brake facing wearing and tearing that elevator maintenance causes not in time are excessive, cause braking force deficiency etc. a variety of causes, there will be and slip the phenomenon of car, the car that slips is all when appearing at elevator parking, be arranged on the coder participant of one end of main shaft this time to elevator master control unit signal transmission, namely, meet once main axis and slip spoke part, coder just has and slips the Signal transmissions of car to elevator master control unit, elevator master control unit is connected with magnet control, what receive that coder transmits at elevator master control unit slips after car signal, electromagnet energising will be controlled, realize the forced brake of rope sheave, automatically the appearance of anti-running phenomenon is realized.
Shown in composition graphs 1, the signal output part of self-resetting switch 14 connects the car Control for Speed Limitation signal input part subtracting journey controller, subtracts the speed-slackening signal mouth of journey controller for connecting the speed-slackening signal input end of elevator master control system.Car top set position detection unit is installed in Kong Su position, elevator hoistways top, car bottom set position detection unit is installed in bottom elevator hoistways and controls fast position, Kong Su position, elevator hoistways top, not higher than well headroom energy disperser bottom surface, is controlled fast position and is not less than shaft bottom energy disperser end face bottom elevator hoistways; The signal output part of car top set position detection unit connects the car top set signal input part subtracting journey controller, and the signal output part of car bottom set position detection unit connects the car bottom set signal input part subtracting journey controller.
Be illustrated in figure 2 the schematic circuit diagram subtracting stroke bidirectional automatic anti-running car speed limiting system provided by the invention:
The described journey controller that subtracts adopts microcontroller U1, and microcontroller U1 adopts model to be STM32F103R8T6.
Described velocity limiter adopts self-resetting switch U2, Self-resetting speed limiting switch U2 is UKT self-resetting switch, be arranged on elevator governor, wherein the mechanical switch parts of Self-resetting speed limiting switch U2 and the two ends of lever are connected to and subtract between the J1-3 pin of journey controller U1 and J1com pin, mechanical switch parts one action of Self-resetting speed limiting switch U2, the J1-3 pin subtracting journey controller U1 just captures level change information, thus knows that now car speed has exceeded the energy disperser command speed prestored.
Described car top set position detection unit adopts the first stroke switch S 1, and car bottom set position detection unit adopts the second travel switch S2; First stroke switch S 1 is arranged on the well enclosure of top, lift car outer wall relevant position be equiped with for coordinate with the first stroke switch S 1 bump against hit bow; Second travel switch S2 be arranged on bottom well enclosure on, lift car outer wall relevant position be equiped with for coordinate with the second travel switch S2 bump against hit bow.
As shown in Figure 3, first stroke switch S 1 is arranged on the well enclosure at elevator hoistways top, and not higher than the bottom surface of well headroom energy disperser, second travel switch S2 is arranged on the well enclosure bottom elevator hoistways, and be not less than the end face of shaft bottom energy disperser, first stroke switch S 1, second travel switch S2 is installed on same perpendicular on the vertical line of horizontal surface, the corresponding first stroke switch S 1 of outer wall of car C1, the position of the second travel switch S2 is equiped with a vertical integral type and hits bow B1, hit the outer wall height of bow B1 length close to car, hit the top of bow B1, bottom is set to the inclined-plane tilted to car walls respectively, the lever of the first stroke switch S 1 is set to compare horizontal surface and upwards lifts an angle, the lever of the second travel switch S2 is set to compare horizontal surface and is pressed with an angle downwards, described angle just with hit the respective ramp of bending B1 two ends and match, first, second travel switch S1, the lever end of S2 is provided with a roller, such as hit bow B1 with car C1 rise to well headroom bump against the first stroke switch S 1 time, the lever of the first stroke switch S 1 can be pushed down, when car leaves, the lever of the first stroke switch S 1 can flick, the angle of inclination of lever and the roller of lever end are all to protect the first stroke switch S 1 in order to avoid damaged, second travel switch S2 in like manner.First, second travel switch S1, S2 are mechanical switch.
As Fig. 2, first stroke switch S 1 is connected between the J1com pin of microcontroller U1 and J1-1 pin, second travel switch S2 is connected between the J1com pin of microcontroller U1 and J1-2 pin, when the first stroke switch S 1 or the second travel switch S2 do not hit bow B1 be pressed onto time, all in closure state, when the first stroke switch S 1 or the second travel switch S2 hit bow B1 be pressed onto time, in off-state, microcontroller U1 according on J1-1 pin, J1-2 pin level change come corresponding judgement.
In the present embodiment, the speed-slackening signal mouth J5-3 pin of microcontroller U1, energization input two pin of J5com pin difference connecting brake YB, power on for control brake YB.
Described first stroke switch S 1, second travel switch S2 all adopts model to be S3BEL-1370, and drg model is DQN090.
In cage operation process, Self-resetting speed limiting switch U2 is along with the speed of the rotation Real-Time Monitoring current car C1 of elevator governor, when car C1 moves to well headroom or shaft bottom, hit bow B1 when bumping against the first stroke switch S 1 or the second travel switch S2, first stroke switch S 1 or the second travel switch S2 disconnect, microcontroller U1 judges the status signal of current Self-resetting speed limiting switch U2 after knowing this information, if now Self-resetting speed limiting switch U2 is normally off, illustrate that elevator master control system achieves normal deceleration, now car speed can not exceed the design speed of energy disperser, now microcontroller U1 is failure to actuate (microcontroller U1 protect be that dangerous situation appears in the design speed preventing the speed of car cushion at collision from exceeding energy disperser), if current Self-resetting speed limiting switch U2 disconnects, namely microcontroller U1 judges that current car speed has exceeded the energy disperser command speed prestored, control brake YB power-off at once, after drg YB power-off, damper brake locking, thus braking car moves, thus realize making corresponding building not need additionally to increase head room and the bottom space of elevator, when not needing to increase energy disperser cost, just can adopt the object of the elevator of more speed simultaneously.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (6)
1. one kind subtracts stroke bidirectional automatic anti-running car speed limiting system, comprise and subtract journey controller, velocity limiter, car top set position detection unit, car bottom set position detection unit, described velocity limiter comprises base, base is equipped with rope sheave and ratchet by main axis, the two ends of main shaft are arranged on base by bearing, rope sheave is assemblied on main shaft, main shaft is provided with coder, both sides in rope sheave on base are provided with brake plate device, the side of the wheel face of rope sheave is rotatably equipped with ratchet, the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined is provided with between ratchet and rope sheave, the wheel face of rope sheave is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the top pressure side of ratchet location structure and pawl spring top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, base is also provided with the electromagnet that top pressure gravity drop hammer after powered up makes gravity drop hammer open, the trigger unit of ratchet location structure is convexly equipped with when the tup of gravity drop hammer turns to the outer rim of rope sheave and the top of power hammer press-fit, ratchet is convexly equipped with to press with the hammer handle top of gravity drop hammer when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave and ratchet is separated with ratchet and makes the lifting reset lever of ratchet location structure and ratchet pawl reset, it is characterized in that: described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim position of disc is laid with self-resetting switch, it is circumferentially concentrically ringed that each self-resetting switch is in of disc, the lever of each self-resetting switch stretches to inner side, it is circumferentially concentrically ringed that the free end of each lever is in a group of disc respectively, gravity drop hammer touches each self-resetting switch successively in the process of opening, described coder is used for transmitting with elevator master control unit being connected, elevator master control unit is connected with magnet control, car top set position detection unit is installed in Kong Su position, elevator hoistways top, and car bottom set position detection unit is installed in bottom elevator hoistways and controls fast position, the signal output part of car top set position detection unit connects the car top set signal input part subtracting journey controller, the signal output part of car bottom set position detection unit connects the car bottom set signal input part subtracting journey controller, the signal output part of self-resetting switch connects the car Control for Speed Limitation signal input part subtracting journey controller, subtracts the speed-slackening signal mouth of journey controller for connecting the speed-slackening signal input end of elevator master control system.
2. according to claim 1ly subtract stroke bidirectional automatic anti-running car speed limiting system, it is characterized in that: described disc is sheet ring body, and on the inner hole wall of disc, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.
3. according to claim 1 and 2ly subtract stroke bidirectional automatic anti-running car speed limiting system, it is characterized in that: described self-resetting switch is fixed on disc by connecting strap, each connecting strap radial direction extends and is also wholely set with disc.
4. according to claim 1ly subtract stroke bidirectional automatic anti-running car speed limiting system, it is characterized in that: described Self-resetting speed limiting switch is connected to the car Control for Speed Limitation signal input part subtracting journey controller.
5. according to claim 1 or 4, subtract stroke bidirectional automatic anti-running car speed limiting system, it is characterized in that: described car top set position detection unit adopts the first travel switch, car bottom set position detection unit adopts the second travel switch, first travel switch is arranged on the well enclosure of top, lift car outer wall relevant position/be equiped with for coordinate with the first travel switch bump against hit bow; Second travel switch be arranged on bottom well enclosure on, lift car outer wall relevant position be equiped with for coordinate with the second travel switch bump against hit bow.
6. according to claim 1 or 4 or 5, subtract stroke bidirectional automatic anti-running car speed limiting system, it is characterized in that: described in subtract journey controller adopt microcontroller, the speed-slackening signal mouth of microcontroller is for connecting the brake control signal input end in elevator master control system.
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| CN201510692409.9A CN105236234B (en) | 2015-10-23 | 2015-10-23 | Subtract stroke bidirectional automatic anti-running vehicle speed limiting system |
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| CN201510692409.9A CN105236234B (en) | 2015-10-23 | 2015-10-23 | Subtract stroke bidirectional automatic anti-running vehicle speed limiting system |
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| CN105236234A true CN105236234A (en) | 2016-01-13 |
| CN105236234B CN105236234B (en) | 2019-03-12 |
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|---|---|
| CN105236234B (en) | 2019-03-12 |
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Address after: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee after: Xiji Xunda Elevator Co., Ltd Address before: 461000 south section of Yanan Road, Xuchang economic and Technological Development Zone, Henan Patentee before: XJ SCHINDLER (XUCHANG) ELEVATOR Co.,Ltd. |