CN204549703U - There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function - Google Patents
There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function Download PDFInfo
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- CN204549703U CN204549703U CN201520185307.3U CN201520185307U CN204549703U CN 204549703 U CN204549703 U CN 204549703U CN 201520185307 U CN201520185307 U CN 201520185307U CN 204549703 U CN204549703 U CN 204549703U
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Abstract
The utility model discloses a kind of unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function, the base of its velocity limiter is provided with rope sheave and ratchet by main axis, main shaft is provided with coder, rope sheave is rotatably equipped with ratchet, ratchet torsion spring is provided with between ratchet and rope sheave, rope sheave wheel face is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the wheel face of ratchet is coaxially fixedly installed disc, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion, coder is used for transmitting with elevator master control unit being connected, elevator master control unit is connected with magnet control.Ratchet of the present utility model and ratchet location structure do not need manual reset, can be used in machine-roomless lift.
Description
Technical field
The utility model relates to a kind of speed limiting system for limiting elevator speed, particularly relates to a kind of unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function.
Background technology
Velocity limiter is the critical component of elevator safety, of the prior art have a kind of such velocity limiter, 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 spline 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 is to Pawl Torsion, ratchet is rotated there is 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, 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, 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.Side in rope sheave on base is rotatably equipped with slipper, connecting rod is provided with between the side of slipper and wheel face, one end of connecting rod and the side of slipper hinged, the other end of connecting rod and the wheel face of ratchet hinged, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives slipper to press to rope sheave when rotating by connecting rod, realizes the braking of rope sheave.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.Certainly, when rope sheave rotates hypervelocity, gravity drop hammer also can open, ratchet and pawl is fastened togather, when service personnel overhauls, even if by ratchet anyway, when allowing ratchet and ratchet be in released state, ratchet still cannot return, need manual override's torsion spring power to rotate ratchet, make ratchet return and locate, in machine-roomless lift with ratchet location structure, workman cannot carry out the reset of ratchet, and causing this kind of velocity limiter cannot use in machine-roomless lift.
Utility model content
The purpose of this utility model is to provide a kind of unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function, to have no idea the problem that uses in machine-roomless lift with the velocity limiter solving this system of the prior art.
In order to realize above object, the utility model adopts following technical scheme: a kind of unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function, comprise unidirectional machine room automatic anti-running car velocity limiter and wire holder, unidirectional machine room automatic anti-running car 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 spline is assemblied on main shaft, main shaft is provided with coder, 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, described ratchet is connected with drag-line, described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, described ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion, described coder is used for transmitting with elevator master control unit being connected, elevator master control unit is connected with magnet control, described wire holder comprises U-shaped framework, the bottom of framework is fixedly installed fixed friction sheet, fill out between fixed friction sheet and framework and be provided with buffering reed, the peristome of framework is fixedly installed action plate, between action plate and fixed friction sheet, there is movable friction lining, the side that movable friction lining is relative with action plate is fixed with leg-of-mutton voussoir, movable friction lining is slidedly assemblied on action plate, action plate is by the inclined-plane bearing fit of inclined-plane that it has and voussoir, action plate is fixedly installed top structure, top structure has slip anticreep and is plugged in flexible top on action plate, the inner of flexible top is stretched in the knock hole that cliding friction plate is arranged, the outer end extend action plate of flexible top, the outer end of described flexible top is connected with drag-line.
Described reset attachment comprises fixed mount, fixed mount is fixed on the lateral surface of ratchet, fixed mount is equipped with the reset contact of stretching to pushing tooth near one end of ratchet work termination by rotating shaft, be provided with Double-directional rotary position limiting structure between described reset contact and fixed mount, described reset inclined-plane is arranged in described reset contact.
Described reset contact is the U-shaped part with two sidewalls and a bottom bent by strip board, the corresponding end of fixed mount stretches between two sidewalls of reset contact, reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount, the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.
Described bidirectionally limited structure comprises two bottoms screwing in reset contact and stretches to the top pressure screw of fixed mount, and two top pressure screws are in the both sides of described rotating shaft respectively.
Described reset contact is away from the sidewall of pushing tooth and be provided with between fixed mount and make reset inclined-plane press to the extension spring pushing tooth.
Described fixed mount comprises the adapter plate for being fixed on ratchet, and the both sides of adapter plate are wholely set for rotating the ear of assembling with reset contact in the work end of ratchet.
Described adapter plate is wholely set the protuberance for fixing extension spring away from work end.
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 flexible top is plugged on action plate by fixing body slip anticreep, described fixing body is plugged in the mounting hole that action plate is offered, flexible top is plugged in fixing body, the inner end of fixing body has the gear edge of varus, the outer peripheral face of flexible top is convexly equipped with and the described axle collar kept off along pushing up force fit, the outer peripheral face of fixing body is provided with the fixing bulge loop coordinated with action plate medial surface, the rear end screw thread of fixing body is installed with jam nut, the front end face of jam nut and the lateral surface top force fit of action plate, the rear end of jam nut has and the turning edge of the aft end face top force fit of fixing body, flexible top is arranged with retracing spring, the top, front end of retracing spring is pressed on the axle collar, on top, rear end is pressed in and turns edge.
Described movable friction lining is by slide construction and action plate slidable fit, described slide construction comprises anticreep plate fixing on the two sides of described voussoir, action plate is fixed with guide plate, the surface of guide plate forms the inclined-plane of action plate, the both sides of guide plate are provided with the edge, side that the length direction along guide plate extends, the both sides of two anticreep plates are relatively turned over and are provided with button edge, and two detain edge with both sides along slip bayonet fitting.
Ratchet of the present utility model has fixedly been sticked disc, pushing tooth on disc can push the reset attachment on ratchet when ratchet reverses, ratchet is rotated to the direction away from ratchet, and ratchet is separated with ratchet location structure, and ratchet is answered and ratchet location structure resets, return normal condition, ratchet is in decontrols the state of ratchet, does not need manual reset ratchet, carry out overhauling at service personnel, reverse ratchet time, ratchet will automatically reset, and can be used in machine-roomless lift; In addition, main shaft is provided with coder, when elevator is in halted state, rope sheave also can be in motionless state, once there is slipping car phenomenon, coder can detect the rotation of main shaft, automatically can prevent elevator from slipping car with this.In addition, when there is emergency, after velocity limiter action, click card card is joined, and ratchet drives drag-line, to stretch and come directly towards pull-out, so movable friction plate moves downward clamping steel wire rope under gravity, the stable stop of Reliable guarantee car, ensures when emergency situation occurs, car reliably can stop mode, the generation of the contingency caused because of falling of car.
Accompanying drawing explanation
Fig. 1 is the integral structure schematic diagram of the utility model embodiment;
Fig. 2 is the assembling schematic diagram of rope sheave in Fig. 1 and ratchet;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right elevation of Fig. 2;
Fig. 5 is the assembly drowing of ratchet in Fig. 1 and disc;
Fig. 6 is the assembly drowing of ratchet in Fig. 1 and reset attachment;
Fig. 7 is the right elevation of Fig. 6.
Fig. 8 is the automatic anti-running car control chart of the elevator device that embodiment of the present utility model is applied;
Fig. 9 is the detonation configuration schematic diagram of the wire holder in the utility model embodiment;
Figure 10 is the structural representation of the top structure in Fig. 8.
Detailed description of the invention
A kind of embodiment with the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function; in Fig. 1 ~ 7; the base 1 of its velocity limiter 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, and both are returned to initial condition.
The wheel face of that side away from gravity drop hammer of ratchet 3 is fixedly installed disc 7, and disc 7 is sheet ring body, and on the inner hole wall of disc 7, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.The outer rim of disc 7 is laid with connecting strap 8, connecting strap 8 and disc 7 are wholely set, and connecting strap and disc 7 coplanar, connecting strap 8 is inclined on disc, that is connecting strap 8 is not extend along the radial direction of disc, and the direction of tilt of connecting strap 8 is consistent with the direction of tilt of the ratchet gear teeth.The side of connecting strap 8 has pushing tooth 9, and pushing tooth 9 and connecting strap 8 are one, and pushing tooth 9 is mutually vertical with connecting strap 8, and pushing tooth 9 is also inclination and the direction of tilt of the direction of tilt and the ratchet gear teeth that push tooth 8 is also the same like this.Ratchet 4 is also fixed with reset attachment, reset attachment has a fixed mount, and fixed mount has an adapter plate 31, and adapter plate 31 is adjacent on the lateral surface of ratchet, so-called lateral surface refers to the face be near rope sheave outer rim, namely away from the face at rope sheave center.Adapter plate 31 is fixed by screws on ratchet, is respectively provided with the working end head end that an ear of ear 32, Liang Ge 32 is all in ratchet in the both sides of adapter plate.Reset attachment also has a reset contact 33, reset contact 33 is the U-shaped part with two sidewalls and a bottom bent by strip board, one end arranging ear of fixed mount is stretched between two sidewalls of reset contact 33, and rotating shaft is rotated through two sidewalls of reset contact and Liang Ge ear thus by reset contact simultaneously and is assemblied on fixed mount.Two top pressure screws are installed with in the bottom of reset contact, two top pressure screws stretch to adapter plate, two top pressure screws are in the both sides of rotating shaft respectively, like this when reset contact is rotated relative to fixed mount, two level pressure screws will encounter adapter plate, such reset contact just has a rotation space, and two top pressure screws can be that reset contact is spacing in the two directions.That sidepiece near pushing tooth of reset contact has the direction of tilt inclined-plane consistent with the direction of tilt of pushing tooth, this inclined-plane is reset inclined-plane 34, when ratchet reversion, disc and then rotates, pushing tooth will push reset inclined-plane and with reset inclined-plane bearing fit, reset contact is rotated with ratchet, makes ratchet decontrol ratchet and locate with ratchet location structure.
The corresponding end of fixed mount stretches between two sidewalls of reset contact, and reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount, and the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.Reset contact away from pushing tooth sidewall on and be provided with extension spring 35 between fixed mount, one end of extension spring 35 is fixed on the position of adapter plate away from ratchet work termination, and this position has been wholely set protuberance 36, and extension spring is fixed on this protuberance 36.The other end of fixing extension spring is fixed on the position being in the inner side of rotating shaft of the sidewall of reset contact, and so-called inner side refers to the side near ratchet center, and reset inclined-plane can be made like this to press to pushing tooth.Reset contact is away from the sidewall of pushing tooth that sidewall not arranging reset inclined-plane.
Reset contact in the present embodiment rotates to be assemblied on fixed mount, Double-directional rotary position limiting structure is two screws, adjust the degree of depth that these two screws screw in bottom spacing contact and just can adjust the angle of reset contact relative to fixed mount, thus the angle on adjustment reset inclined-plane, the angle of rotating to make ratchet guarantees that enough greatly ratchet and ratchet location structure reset, certainly, also can directly reset contact be fixed on ratchet in other are implemented, ratchet so also can be made to reverse and reset.
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. 8 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.
In figure 9 and in figure 10, the framework 13 of wire holder is U-shaped, the U-shaped structure with three sidewalls be namely bent into by one block of plate, fixed friction sheet 14 is fixedly installed in the bottom of framework 13, fixed friction sheet 14 is bolted on framework 13, fill out between fixed friction sheet 14 and framework 13 and be provided with disc spring sheet 12, disc spring sheet 12 is located on bolt, and when fixed friction sheet 14 is stressed, disc spring sheet 12 can play buffer action.Be fixedly installed action plate 22 at the peristome of framework 13, action plate 22 and framework 13 form square tube shape jointly.Between action plate 22 and fixed friction sheet 14, have movable friction lining 16, movable friction lining 16 is slidedly assemblied on action plate 22, and the face that movable friction lining 16 is relative with action plate 22 is fixed with voussoir 15, and voussoir 15 is triangle voussoir.Fixed guide plate 19 in the respective face of action plate 22, guide plate 19 is also wedge, coordinates with the inclined-plane of voussoir on its inclined-plane.The edge, side that the length direction along guide plate extends is provided with, that is out two raised lines in the both sides of guide plate 19 in the both sides of guide plate 19.Anticreep plate 18 fixing on the two sides of voussoir 15, relatively turns in the both sides of two anticreep plates and is provided with button edge, and two button edges are with both sides along slip bayonet fitting, and like this, movable friction lining 16 can slide relative to action plate and can not be separated with action plate.Here voussoir has two, and interval is located on movable friction lining, and corresponding anticreep plate and guide plate also have two covers.
Figure action plate is fixedly installed top structure 20, top structure 20 has slip anticreep and is plugged in flexible top 23 on action plate, flexible top 23 is plugged on action plate 22 by fixing body 24 anticreep that slides, fixing body 24 is plugged in the mounting hole that action plate 22 is offered, flexible top 23 is plugged in fixing body 24, there is the gear of varus along 29 at the inner end of fixing body 24, the outer peripheral face of flexible top 23 is convexly equipped with the axle collar 28, the axle collar 28 pushes up force fit with gear along 29, the outer peripheral face of fixing body 24 is provided with fixing bulge loop 25, fixing bulge loop 25 coordinates with the medial surface of action plate 22, the rear end screw thread of fixing body 24 is installed with jam nut 26, the front end face of jam nut 26 and the lateral surface top force fit of action plate 22, jam nut 26 realizes fixing body 24 fixing on action plate 22 together with fixing bulge loop 25.Have in the rear end of jam nut 26 and turn edge, this turns edge and the aft end face top force fit of fixing body 24.Flexible top 23 is arranged with retracing spring 27, and the top, front end of retracing spring 27 is pressed on the axle collar 28, on the top, rear end of retracing spring 27 is pressed in and turns edge.Cliding friction plate is provided with knock hole 21, and the inner of flexible top is stretched in knock hole 21, the outer end extend action plate of flexible top 23.The external end head of flexible top 23 is connected with drag-line 30, other one end of drag-line 30 is fixed on the wheel face of ratchet 3, when moving under the drive of ratchet at ratchet, ratchet can pull drag-line, to stretch and come directly towards pull-out, at this moment movable friction lining can move clamping steel wire rope together with fixed friction sheet under gravity, realizes the reliable stopping of car.
Movable friction lining 16 is provided with handle 17, handle 17 on carry movable friction lining, movable friction lining is separated with fixed friction sheet.
Buffering reed in the present embodiment is disc spring sheet, also can be plate spring sheet.
Claims (10)
1. one kind has the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function, comprise unidirectional machine room automatic anti-running car velocity limiter and wire holder, unidirectional machine room automatic anti-running car 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 spline is assemblied on main shaft, main shaft is provided with coder, 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, described ratchet is connected with drag-line, it is characterized in that: described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, described ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion, described coder is used for transmitting with elevator master control unit being connected, elevator master control unit is connected with magnet control, described wire holder comprises U-shaped framework, the bottom of framework is fixedly installed fixed friction sheet, fill out between fixed friction sheet and framework and be provided with buffering reed, the peristome of framework is fixedly installed action plate, between action plate and fixed friction sheet, there is movable friction lining, the side that movable friction lining is relative with action plate is fixed with leg-of-mutton voussoir, movable friction lining is slidedly assemblied on action plate, action plate is by the inclined-plane bearing fit of inclined-plane that it has and voussoir, action plate is fixedly installed top structure, top structure has slip anticreep and is plugged in flexible top on action plate, the inner of flexible top is stretched in the knock hole that cliding friction plate is arranged, the outer end extend action plate of flexible top, the outer end of described flexible top is connected with drag-line.
2. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 1; it is characterized in that: described reset attachment comprises fixed mount; fixed mount is fixed on the lateral surface of ratchet; fixed mount is equipped with the reset contact of stretching to pushing tooth near one end of ratchet work termination by rotating shaft; be provided with Double-directional rotary position limiting structure between described reset contact and fixed mount, described reset inclined-plane is arranged in described reset contact.
3. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 2; it is characterized in that: described reset contact is the U-shaped part with two sidewalls and a bottom bent by strip board; the corresponding end of fixed mount stretches between two sidewalls of reset contact; reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount; the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.
4. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 3; it is characterized in that: described bidirectionally limited structure comprises two bottoms screwing in reset contact and stretches to the top pressure screw of fixed mount, and two top pressure screws are in the both sides of described rotating shaft respectively.
5. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 4, is characterized in that: described reset contact is away from the sidewall of pushing tooth and be provided with between fixed mount and make reset inclined-plane press to the extension spring pushing tooth.
6. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 5; it is characterized in that: described fixed mount comprises the adapter plate for being fixed on ratchet, the both sides of adapter plate are wholely set for rotating the ear of assembling with reset contact in the work end of ratchet.
7. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 6, is characterized in that: described adapter plate is wholely set the protuberance for fixing extension spring away from work end.
8. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function as claimed in any of claims 1 to 7; it is characterized in that: described disc is sheet ring body; on the inner hole wall of disc, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.
9. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 1, it is characterized in that: described flexible top is plugged on action plate by fixing body slip anticreep, described fixing body is plugged in the mounting hole that action plate is offered, flexible top is plugged in fixing body, the inner end of fixing body has the gear edge of varus, the outer peripheral face of flexible top is convexly equipped with and the described axle collar kept off along pushing up force fit, the outer peripheral face of fixing body is provided with the fixing bulge loop coordinated with action plate medial surface, the rear end screw thread of fixing body is installed with jam nut, the front end face of jam nut and the lateral surface top force fit of action plate, the rear end of jam nut has and the turning edge of the aft end face top force fit of fixing body, flexible top is arranged with retracing spring, the top, front end of retracing spring is pressed on the axle collar, on top, rear end is pressed in and turns edge.
10. the unidirectional automatic anti-running car speed-limiting protection system with ratchet auto-reset function according to claim 1 and 2; it is characterized in that: described movable friction lining is by slide construction and action plate slidable fit; described slide construction comprises anticreep plate fixing on the two sides of described voussoir; action plate is fixed with guide plate; the surface of guide plate forms the inclined-plane of action plate; the both sides of guide plate are provided with the edge, side that the length direction along guide plate extends; the both sides of two anticreep plates are relatively turned over and are provided with button edge, and two detain edge with both sides along slip bayonet fitting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520185307.3U CN204549703U (en) | 2015-03-31 | 2015-03-31 | There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520185307.3U CN204549703U (en) | 2015-03-31 | 2015-03-31 | There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function |
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| CN204549703U true CN204549703U (en) | 2015-08-12 |
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| CN201520185307.3U Expired - Fee Related CN204549703U (en) | 2015-03-31 | 2015-03-31 | There is the unidirectional automatic anti-running car speed-limiting protection system of ratchet auto-reset function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197538A (en) * | 2015-10-21 | 2015-12-30 | 湖南远扬煤机制造有限公司 | Guide-type suspended conveyor rope-breaking protecting device |
| CN108382956A (en) * | 2018-02-12 | 2018-08-10 | 曾清民 | A kind of device of release elevator car safety |
| CN109592531A (en) * | 2018-11-29 | 2019-04-09 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
| CN112424103A (en) * | 2018-07-24 | 2021-02-26 | 三菱电机株式会社 | Speed limiter of elevator |
| CN112479031A (en) * | 2021-01-14 | 2021-03-12 | 江苏江达机械制造有限公司 | Gravity tensioning structure at tail part of lifter |
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2015
- 2015-03-31 CN CN201520185307.3U patent/CN204549703U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197538A (en) * | 2015-10-21 | 2015-12-30 | 湖南远扬煤机制造有限公司 | Guide-type suspended conveyor rope-breaking protecting device |
| CN108382956A (en) * | 2018-02-12 | 2018-08-10 | 曾清民 | A kind of device of release elevator car safety |
| CN112424103A (en) * | 2018-07-24 | 2021-02-26 | 三菱电机株式会社 | Speed limiter of elevator |
| CN109592531A (en) * | 2018-11-29 | 2019-04-09 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
| CN109592531B (en) * | 2018-11-29 | 2023-09-01 | 广州广日电梯工业有限公司 | Speed limiter device with automatic return function |
| CN112479031A (en) * | 2021-01-14 | 2021-03-12 | 江苏江达机械制造有限公司 | Gravity tensioning structure at tail part of lifter |
| CN112479031B (en) * | 2021-01-14 | 2024-05-17 | 江苏江达机械制造有限公司 | Gravity tensioning structure at tail of elevator |
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