CN108455403B - Car follow-up elevator speed limiter - Google Patents
Car follow-up elevator speed limiter Download PDFInfo
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- CN108455403B CN108455403B CN201810240848.XA CN201810240848A CN108455403B CN 108455403 B CN108455403 B CN 108455403B CN 201810240848 A CN201810240848 A CN 201810240848A CN 108455403 B CN108455403 B CN 108455403B
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- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 230000001360 synchronised effect Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 230000009471 action Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/048—Testing of overspeed governor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The application discloses a car follow-up elevator speed limiter, which comprises a rotating device and at least one three-bar mechanism, wherein the three-bar mechanism is provided with a first connecting bar, a second connecting bar and a third connecting bar which are sequentially connected, the first connecting bar and the third connecting bar are respectively connected with the rotating device in a rotating way, the first connecting bar and/or the third connecting bar are connected with the rotating device through a first spring, the rotating device is provided with a driving wheel, the driving wheel is driven by a synchronous belt or a steel wire rope which is arranged along the vertical direction, two ends of the synchronous belt and the steel wire rope are respectively fixed at the top and the bottom of a hoistway, the car follow-up elevator speed limiter further comprises an electric triggering device and a mechanical triggering device, the electric triggering device is provided with a first triggering stop block, the mechanical triggering device is provided with a second triggering stop block, and the first triggering stop block and the second triggering stop block are respectively arranged on a rotating path of the first connecting bar and/or the third connecting bar after the first connecting bar and/or the third connecting bar are radially displaced along the rotating device, so that the triggering time of a safety tongs is shortened, the utilization rate of space is improved, and the time of on-site installation and debugging is saved.
Description
Technical Field
The present disclosure relates generally to the field of elevators, and more particularly to the field of elevator safety, and more particularly to a car follower elevator speed limiter.
Background
The elevator speed limiter is one of four safety components of the elevator. The elevator safety device can be triggered to act in time under the condition of unexpected overspeed, so that the elevator is stopped, and the life and property safety of passengers is guaranteed.
A conventional governor is mounted on top of an elevator machine room or hoistway and a safety gear is mounted on the elevator car. This approach has the disadvantage of: firstly, a driving chain (a steel wire rope) between the speed limiter and the safety tongs is too long, so that the triggering delay of the safety tongs is caused, and the speed of the car is too high when the car is stopped, thereby generating larger impact, and even possibly causing the stopping failure; secondly, the speed limiter and the tensioning device thereof need to occupy the space of the well independently, so that the utilization rate of the space of the well is reduced; thirdly, the connection of the speed limiter and the safety tongs lifting mechanism is required to be completed on site, and the on-site installation and debugging time is relatively long.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a car follower elevator governor that has high hoistway space utilization, a fast braking response, and facilitates field installation and commissioning.
In a first aspect, the car follower elevator speed limiter of the application comprises a rotating device and at least one three-bar linkage,
the three-link mechanism is provided with a first link, a second link and a third link which are sequentially connected, the first link and the third link are respectively and rotatably connected with the rotating device, and the first link and/or the third link are/is provided with a first connecting rod and a second connecting rod
The third connecting rod is connected with the rotating device through a first spring,
the rotating device is provided with a driving wheel, the driving wheel is driven by a synchronous belt or a steel wire rope which is arranged along the vertical direction, two ends of the synchronous belt and the steel wire rope are respectively fixed at the top and the bottom of a hoistway,
the mechanical trigger device is provided with a second trigger stop, and the first trigger stop and the second trigger stop are arranged on a rotating path of the first connecting rod and/or the third connecting rod after radial displacement of the rotating device.
According to the technical scheme provided by the embodiment of the application, the speed limiter is fixed on the outer side of the car, so that the speed limiter and the car follow-up, the distance between the speed limiter and the safety tongs is reduced, the trigger time of the safety tongs is shortened, the utilization rate of a well space is improved, the speed limiter can be debugged when leaving a factory, the time for on-site installation and debugging is saved, and the problems that the speed limiter occupies the well space, the action delay of the safety tongs is excessively long due to the distance between the speed limiter and the safety tongs, and the on-site installation and debugging time of the speed limiter is long can be solved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view of a car follower elevator speed limiter according to an embodiment of the present application;
fig. 2 is a schematic view of the structure of a car-follower elevator governor of an embodiment of the present application;
fig. 3 is a schematic view of the cooperation of the drive wheel, the first rotating disc and the elastic element of the car-follower elevator governor according to an embodiment of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
One embodiment of the present application, referring to fig. 1 and 2, is a car-follower elevator speed limiter of the present application, comprising a rotating device 10 and at least one actuating mechanism 20,
the rotating device 10 is provided with a driving wheel 12, the driving wheel 12 is driven by a synchronous belt or a steel wire rope which are arranged along the vertical direction, two ends of the synchronous belt and the steel wire rope are respectively fixed at the top and the bottom of a well,
and further comprises an electric triggering device 30 and a mechanical triggering device 40, wherein the electric triggering device 30 is provided with a first triggering block, the mechanical triggering device 30 is provided with a second triggering block 41, the first triggering block and the second triggering block 41 are respectively arranged on a rotating path of the first connecting rod 21 and/or the third connecting rod 24 after the radial displacement of the rotating device 10,
the three-bar linkage 20 is provided with a first bar 21, a second bar 23 and a third bar 24 which are connected in sequence, the first bar 21 and the third bar 24 are respectively connected with the rotating device 10 in a rotating way, and the first bar 21 and/or the third bar 24 are respectively connected with the rotating device
The third link 24 is connected to the turning device 10 by a first spring 26.
In the embodiment of the application, the actuating mechanism is used for monitoring the rotation speed of the rotating device, the actuating mechanism is provided with a centrifugal detection block, when the rotation speed of the rotating device is faster, the centrifugal detection block is farther from the rotation center of the rotating device, the actuating mechanism can be a three-link mechanism, an overrunning clutch and the like which can realize the mechanism for detecting the rotation speed of the rotating device, the three-link mechanism is used as the actuating mechanism for convenience of explanation, wherein the centrifugal detection block is a first link and a third link, the rotating device is provided with a driving wheel, the driving wheel is connected with a synchronous belt, the speed limiter is fixed on the side surface of a car and moves up and down in a hoistway along with the elevator car, when the elevator car moves up and down, the synchronous belt or a steel wire rope does not move, the synchronous belt or the steel wire rope drives the rotating device to rotate, when the car moves faster, the rotating device rotates, the rotating device is also rotationally connected with a first link and a third link, the three-link mechanism rotates along with the rotating device, at the moment, the first link and the second link mechanism is subjected to centrifugal force action in the rotating process, the first link mechanism expands the moving area of the first link and the third link mechanism, and the first link mechanism moves in a direction of the first link, and the first link and the third link mechanism moves in a small range of rotation when the first link and the third link rotates in a small trigger mode. When the elevator breaks down and the falling speed is too high, the rotating speed of the rotating device is also high, the centrifugal force of the first connecting rod and the third connecting rod is larger than the pulling force provided by the first spring, the end parts of the first connecting rod and the third connecting rod synchronously move away from the center of the rotating device under the action of the second connecting rod, after the rotating device reaches a certain speed, the end parts of the first connecting rod and the third connecting rod contact with the first triggering stop block and the second triggering stop block in sequence, the first triggering stop block is triggered to cut off an electric system of the elevator, the second triggering stop block is triggered to directly act on a safety tongs of the elevator, so that the safety tongs act, brake the elevator, reduce the falling speed of the elevator until the elevator stops, and the safety tongs can also be a bidirectional safety tongs. When the end part of the first connecting rod or the third connecting rod touches the first triggering stop block or the second triggering stop block, the first spring is in a stretching state, that is, when the elevator operates normally, the end part of the first connecting rod or the third connecting rod can not touch the first triggering stop block or the second triggering stop block under the action of the pulling force of the first spring. The rotating device is provided with a driving wheel, the driving wheel is driven by a synchronous belt arranged along the vertical direction, two ends of the synchronous belt are respectively fixed at the top and the bottom of a well, mutually meshed teeth are respectively arranged on the synchronous belt and the driving wheel, and when the elevator moves up and down, the synchronous belt drives the driving wheel to rotate, so that the synchronous belt is effectively prevented from being separated from the driving wheel. The electric triggering device is provided with a first triggering stop block, when the first connecting rod or the third connecting rod performs centrifugal motion, the end part of the first connecting rod or the third connecting rod can touch the first triggering stop block, so that the first triggering stop block rotates, and the electric system of the elevator is cut off. The mechanical triggering device is provided with a second triggering stop block, when the first connecting rod or the third connecting rod performs centrifugal motion, the end part of the first connecting rod or the third connecting rod can touch the second triggering stop block, so that the second triggering stop block rotates along with the rotating device, and the safety tongs connected with the second triggering stop block are driven to actuate and brake the elevator. The elevator speed limiter is arranged on the outer side surface of the elevator car and is driven by the elevator, so that the elevator speed limiter does not occupy the space of a hoistway, and the utilization rate of the elevator hoistway is improved. Particularly, the elevator additionally installed on the existing building is influenced by the existing building structure and the underground pipe network, so that the occupied area of an elevator shaft is greatly limited. Therefore, the application can solve the problem of furthest increasing the area of the elevator car under the condition of limited area of the well, and improves the bearing capacity of the elevator. Meanwhile, the speed limiter can be directly installed on the elevator car frame before delivery, and the whole delivery is finished after the debugging, so that the time for on-site installation and debugging is saved, and the working efficiency is improved. Meanwhile, the speed limiter and the lift car follow-up, when the elevator accidentally overspeed, the mechanical triggering device of the speed limiter can directly enable the safety tongs to act through the lifting arm, so that the lift car of the elevator stops, the situation that the action of the safety device is delayed due to elastic delay when the speed limiter is arranged above a well is avoided, and the safety of a system is greatly improved.
Further, the elevator car comprises a first fixing plate 14, wherein the first fixing plate 14 is fixed on the outer side face of the elevator car, the first fixing plate 14 is fixedly connected with a rotating shaft 15, and the rotating device 10 is in shaft connection with the rotating shaft 15.
In the embodiment of the application, the speed limiter is fixed on the outer side surface of the car through the first fixing plate and is driven by the elevator, so that the elevator shaft space is not occupied, and the utilization rate of the elevator shaft is improved. Particularly, the elevator additionally installed on the existing building is influenced by the existing building structure and the underground pipe network, so that the occupied area of an elevator shaft is greatly limited. Therefore, the application can solve the problem of furthest increasing the area of the elevator car under the condition of limited area of the well, and improves the bearing capacity of the elevator. Meanwhile, the speed limiter can be directly installed on the elevator car frame before delivery, and the whole delivery is finished after the debugging, so that the time for on-site installation and debugging is saved, and the working efficiency is improved. Meanwhile, the speed limiter and the lift car follow-up, when the elevator accidentally overspeed, the mechanical triggering device of the speed limiter can directly enable the safety tongs to act through the lifting arm, so that the lift car of the elevator stops, the situation that the action of the safety device is lagged due to elastic delay of a steel wire rope of the speed limiter is avoided, and the safety of a system is greatly improved. The rotating device is connected with the fixed shaft through a bearing in a shaft way, and rotates around the rotating shaft.
Referring to fig. 3, further, the rotating device 10 is provided with a first rotating disc 16 and an elastic element 18, the first rotating disc 16 is axially connected with the rotating shaft 15, the driving wheel 12 is provided with a cavity for accommodating the first rotating disc 16, the inner side of the driving wheel 12 facing the rotating shaft 15 is provided with a first protrusion 13, the first rotating disc 16 is detachably and fixedly connected with the elastic element 18, the first rotating disc 16 is provided with a first groove 17, the first protrusion 13 is clamped with the first groove 17, and the first rotating disc 16 and the elastic element 18 are tightly pressed against two opposite sides of the first protrusion 13.
In the embodiment of the application, the first bulge is clamped by the first rotating disc and the elastic element, so that the first rotating disc and the driving wheel are fixed, the first rotating disc rotates along with the driving wheel when the elevator normally operates, the first rotating disc and the elastic element can be connected in a detachable fixed connection mode such as a pin shaft, a bolt connection, a rivet connection and the like, when the elevator drops too fast, the driving wheel rotates too fast, the elastic element deforms under the action of friction force of the first bulge, the driving wheel rotates relative to the first rotating disc, the rotating speed of the first rotating disc is slower than the rotating speed of the driving wheel, and after the speed limiter acts, the rotating device can be separated from the driving wheel and does not rotate along with the driving wheel, so that the speed limiter is prevented from being damaged in the car stopping process.
Further, the first rotating disc 16 is connected to the elastic element 18 by a pin, which is arranged at the edge of the first rotating disc 16 near the first protrusion 13.
In the embodiment of the application, the first rotating disc is connected with the elastic element through the pin shaft, and the pin shaft is arranged on the edge of the first rotating disc, which is close to the first bulge, so that the friction force between the first rotating disc and the synchronous wheel is increased, the first rotating disc is prevented from being separated from the synchronous wheel when the elevator normally operates, and the normal operation of the elevator is ensured.
Further, the synchronous belt or the steel wire rope is arranged between any one of the pressing wheels 19 and the driving wheel 12, the pressing wheel 19 is used for enabling the synchronous belt or the steel wire rope to be closely attached to the driving wheel 12, or the pressing wheel 19 is used for enabling the synchronous belt or the steel wire rope to form a wrap angle with the driving wheel 12.
In the embodiment of the application, when the synchronous belt is driven, the number of the pressing wheels is two, the pressing wheels are respectively arranged above and below the driving wheel, the contact range of the synchronous belt and the driving wheel is larger than one third of the circular arc of the driving wheel by the two pressing wheels, the distance between the pressing wheels and the driving wheel is slightly larger than the thickness of the synchronous belt, the installation is convenient, and the synchronous belt can be prevented from being separated from the driving wheel. When the steel wire rope is driven, the steel wire rope can wind the outer side surface of the driving wheel for one circle, so that the friction force between the steel wire rope and the driving wheel is improved, one pressing wheel can be arranged, the pressing wheel is fixed at the joint of the steel wire rope, the steel wire rope is prevented from being separated from the driving wheel, the pressing wheel is used for enabling the synchronous belt or the steel wire rope and the driving wheel to form a wrap angle, and the friction force between the steel wire rope or the synchronous belt and the driving wheel is improved.
Further, the electrical triggering device 30 is provided with a rotating block 32, the rotating block 32 is fixedly connected with the first triggering stop block, the rotating block 32 is rotationally fixed on the second fixing plate, the rotating block 32 is provided with a cam 33, the second fixing plate is fixedly connected with an electrical triggering switch 37, and a movable end 38 of the electrical triggering switch 37 tightly abuts against the rotating side face of the cam 33.
In the embodiment of the application, when the elevator descends too fast, the end part of the first connecting rod or the third connecting rod touches the first trigger stop block under the action of centrifugal force, the first trigger stop block drives the rotating block to rotate, the cam also rotates along with the rotating block, when the cam rotates, the movable end of the electric trigger switch tightly propped against the cam is driven to act, the electric safety system of the elevator monitors that the state of the electric trigger switch changes, the power supply of the electric system of the elevator is immediately cut off, and the operation safety of the elevator is ensured.
Further, a second groove is formed at the contact position of the cam 33 and the movable end 38, and the movable end 38 abuts against the bottom of the second groove.
In the embodiment of the application, the contact part of the cam and the movable end is provided with the second groove, the movable end tightly abuts against the bottom of the second groove, and the cam can trigger the electric switch to act no matter whether anticlockwise or clockwise rotation, but not only, the cam is arranged into a symmetrical structure, so that the possibility of error in the cam installation process is reduced, the assembly efficiency of the speed limiter is improved, the integral safety of the elevator is improved, when the elevator rises or falls too fast, the electric switch can be triggered, the rising and falling speeds of the elevator can be simultaneously limited, and the aim of bidirectional speed limitation is achieved.
Further, the second fixing plate is fixedly connected with a first push-pull electromagnet 61, a first push head 62 is arranged on one side of the first push-pull electromagnet 61 facing the cam 33, and two opposite push-stop inclined surfaces are arranged on one side of the cam 33 facing the first push head 62.
In the embodiment of the application, after the cam touches the first trigger stop block at the first connecting rod or the third connecting rod to rotate, the push head pushes the stop inclined surface outwards by controlling the first push-pull electromagnet, so that the cam is reset, the state that the movable end tightly abuts against the bottom of the second groove is restored, when an elevator leaves a factory or is tested on the site of installing the elevator, the state of the cam is reset by controlling the first push-pull electromagnet without manual reset, the debugging time is saved, the debugging labor intensity is reduced, and the safety of an installer is ensured. And whether the cam rotates clockwise or anticlockwise, the first push head can push the two opposite push block inclined planes to reset.
Further, the mechanical triggering device 40 is provided with a second rotating disc 44, the second rotating disc 44 is coaxially connected with the driving wheel 12, a second triggering stop block 41 is arranged on one side of the second rotating disc 44 facing the driving wheel 12, the second rotating disc 44 is fixedly connected with a lifting arm 43, and one end of the lifting arm 43 away from the second rotating disc 44 is connected with a safety gear or a synchronous mechanism of the safety gear or a lifting mechanism of the safety gear.
In the embodiment of the application, when the descending speed of the elevator is too high, the first connecting rod or the third connecting rod moves outwards under the action of centrifugal force until the second trigger stop block is clamped, the first connecting rod or the third connecting rod drives the second rotating disc to rotate, and the lifting arm fixed on the second rotating disc lifts the safety tongs or the synchronous mechanism of the safety tongs or the lifting mechanism of the safety tongs, so that the safety tongs act and the elevator is rapidly stopped. When the elevator accidentally overspeed, the mechanical triggering device of the speed limiter can directly enable the safety tongs to act through the lifting arm, so that the elevator car is stopped, the situation that the action of the safety device is lagged due to elastic delay when the speed limiter is arranged above a well is avoided, and the safety of the system is greatly improved.
Further, including canceling release mechanical system 50, canceling release mechanical system 50 includes two dials 51 of relative setting, and second rolling disc 44 fixedly connected with round pin axle 42, round pin axle 42 set up between two dials 51, and two dials 51 alternate there is the axle 52, and the both ends of axle 52 are provided with baffle 53 respectively, are provided with pressure spring 54 between at least one baffle 53 and the dials 51, are provided with dog 55 between two dials 51, and dog 55 is used for stopping two dials 51.
In the embodiment of the application, the two shifting plates are kept balanced under the action of the elastic force of the pressure spring and the stop dog, so that when the reset mechanism is balanced, the gap between the two shifting plates is the same as the outer diameter of the pin shaft, the shifting plates can be pushed away to compress the spring immediately after the pin shaft acts, and the action sensitivity of the reset mechanism is improved. The elevator is characterized in that the rotating device drives the second rotating disc to rotate clockwise or anticlockwise in the ascending or descending process of the elevator, the pin shaft can drive one of the two shifting plates to rotate, the other shifting plate does not move under the stop of the stop block, the pressure spring is further compressed, after the elevator is stopped by the safety clamp, a worker can reversely rotate the rotating device, at the moment, the three-link mechanism is separated from the second triggering stop block and resets under the pulling force of the first spring, at the moment, the second rotating disc is reset through the reset mechanism, the lifting arm is restored to the initial state, and particularly, when the three-link mechanism is separated from the second triggering stop block, the shifting plate close to the pressure spring is reversely pushed under the action of the pressure spring, and the shifting plate drives the second rotating disc to reset through the pushing pin shaft, so that the debugging time is saved, the debugging labor intensity is reduced, and the safety of an installer is ensured.
Further, the first connecting rod 21 is eccentrically arranged on the first connecting rod 21 at the first rotational connection of the rotational device 10, and/or
The third link 24 is arranged eccentrically on the third link 24 at the second rotational connection of the rotational device 10.
In the embodiment of the application, the first connecting rod and the third connecting rod can generate a trend of expanding the rotating area of the three-connecting rod mechanism under the action of centrifugal force in the rotating process of the rotating device, so that the action sensitivity of the speed limiter is improved.
Further, the first connecting rod 21 is divided into a first rotating end and a first driven end by a first rotating joint, the center of gravity of the first connecting rod 21 is set as the first rotating end, the third connecting rod 24 is divided into a second rotating end and a second driven end by a second rotating joint, the center of gravity of the third connecting rod 24 is set as the second rotating end,
the first rotating end and the second driven end are connected by a second link 23, or,
the second rotating end and the first driven end are connected by a second link 23.
In the embodiment of the application, the second connecting rod is prevented from clamping the first connecting rod and the third connecting rod to rotate, so that the stability of the device is improved.
Further, the rotating device 10 is fixedly connected with a second push-pull electromagnet, the second push-pull electromagnet is provided with a second push head, and the first rotating end or the second rotating end is arranged on the moving path of the second push head.
In the embodiment of the application, the rotating device is fixedly connected with the second push-pull electromagnet, the second push-pull electromagnet is provided with the second push head, the first rotating end or the second rotating end is arranged on the moving path of the second push head, when the overspeed test of the elevator is simulated, the first rotating end or the second rotating end can be pushed outwards through the second push head, so that the first connecting rod or the third connecting rod contacts the first triggering stop block and the second triggering stop block, the electric triggering device and the mechanical triggering device act, the operation is simple, the speed limiter can be detected before the elevator is installed and before the elevator is installed, and the stability and the reliability of the elevator safety system are improved.
Further, the side of the first link 21 facing away from the third link 24 is provided with a second protrusion 22, and/or
The end of the third link 24 facing away from the first link 21 is provided with a third protrusion 25,
the second projection 22 is for stopping the second trigger block and the third projection 25 is for stopping the second trigger block.
In the embodiment of the application, after the first connecting rod or the third connecting rod acts, the second bulge or the third bulge clamps the second trigger stop block, so that the second rotating disc rotates together with the rotating device, thereby driving the lifting arm to move and triggering the safety tongs, improving the reliability of the speed limiter, reducing the possibility that the first connecting rod or the third connecting rod can not drive the second rotating disc to rotate after the three-connecting rod mechanism acts, and improving the safety of the elevator.
Further, the distance between the first trigger block and the rotation center of the rotation device 10 is smaller than the distance between the second trigger block 41 and the rotation center of the rotation device 10.
In the embodiment of the application, in the actual running process of the elevator, after the elevator overspeed, the three-bar mechanism firstly triggers the first trigger stop block to cut off the electrical system of the elevator, and if the elevator speed is still fast, the three-bar mechanism can continuously trigger the second trigger stop block, so that the safety tongs act to forcibly make the elevator stop, the safety performance of the elevator is fully ensured, and meanwhile, the overspeed problem of the elevator can be reasonably solved.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (9)
1. A speed limiter of a lift car follow-up elevator is characterized by comprising a rotating device and at least one action mechanism,
the rotating device is provided with a driving wheel which is driven by a synchronous belt or a steel wire rope arranged along the vertical direction, two ends of the synchronous belt and the steel wire rope are respectively fixed at the top and the bottom of a well,
the actuating mechanism is fixedly connected with the rotating device, the actuating mechanism is provided with a centrifugal detection block which is used for detecting the rotating speed of the rotating device,
the centrifugal detection device comprises a rotating device, a centrifugal detection block, an electric trigger device, a mechanical trigger device and a first trigger stop block, wherein the electric trigger device is provided with the first trigger stop block, the mechanical trigger device is provided with the second trigger stop block, and the first trigger stop block and the second trigger stop block are both arranged on a rotating path of the centrifugal detection block after radial displacement of the rotating device;
the elevator car comprises a first fixing plate, wherein the first fixing plate is fixed on the outer side surface of the elevator car, a rotating shaft is fixedly connected to the first fixing plate, the rotating device is in shaft connection with the rotating shaft, a first rotating disc and an elastic element are arranged on the rotating device, the first rotating disc is in shaft connection with the rotating shaft, a cavity for accommodating the first rotating disc is formed in a driving wheel, a first bulge is formed in the inner side of the driving wheel, which faces the rotating shaft, the first rotating disc is detachably and fixedly connected with the elastic element, a first groove is formed in the first rotating disc, the first bulge is in clamping connection with the first groove, and the first rotating disc and the elastic element are tightly pressed on two sides opposite to the first bulge;
the first rotating disc is connected with the elastic element through a pin shaft, and the pin shaft is arranged on the edge of the first rotating disc, which is close to the first bulge.
2. The car follower elevator speed limiter of claim 1, including at least one pinch roller, the timing belt or wire rope being disposed between any one of the pinch rollers and the drive wheel, the pinch roller being configured to urge the timing belt or wire rope against the drive wheel or the pinch roller being configured to form a wrap angle with the drive wheel.
3. The car follower elevator speed limiter of claim 1, wherein the electrical triggering device is provided with a rotating block, the first triggering block is fixedly connected with the rotating block, the rotating block is rotatably installed on a second fixed plate, the rotating block is provided with a cam, an electrical triggering switch is fixedly connected to the second fixed plate, a second groove is formed in one side of the cam, facing the electrical triggering switch, of the cam, and the movable end of the electrical triggering switch is propped against the bottom of the second groove.
4. The car follower elevator speed limiter of claim 3, wherein the second fixed plate is fixedly connected with a first push-pull electromagnet, a first push-head is disposed on a side of the first push-pull electromagnet facing the cam, and two opposite push-stop slopes are disposed on a side of the cam facing the first push-head.
5. The car follower elevator speed limiter according to claim 1, wherein the mechanical triggering device is provided with a second rotating disc, the second rotating disc is coaxially connected with the driving wheel, one side of the second rotating disc facing the driving wheel is provided with the second triggering stop block, the second rotating disc is fixedly connected with a lifting arm, and one end of the lifting arm away from the second rotating disc is connected with a safety gear or a synchronizing mechanism of the safety gear or a lifting mechanism of the safety gear.
6. The car follower elevator speed limiter of claim 5, comprising a reset mechanism, wherein the reset mechanism comprises two rotatable paddles arranged opposite to each other, the second rotating disc is fixedly connected with a pin shaft, the pin shaft is arranged between the two paddles, the two paddles are penetrated by a shaft, two ends of the shaft are respectively provided with a baffle, a pressure spring is arranged between at least one baffle and each paddle, a stop block is arranged between the two paddles, and the stop block is used for stopping the two paddles.
7. The car follower elevator speed limiter of claim 5, wherein the second rotating disk is fixedly connected with a second push-pull electromagnet, the second push-pull electromagnet is provided with a second push head, and the second push head is used for pushing the centrifugal detection block to touch the first trigger stop and the second trigger stop.
8. The car-follower elevator speed limiter of any one of claims 1-7, wherein the first trigger stop is a distance from the center of rotation of the rotating device that is less than the distance from the center of rotation of the rotating device.
9. The car-follower elevator speed limiter of any one of claims 1-7, wherein the centrifugal detection block is provided with a second protrusion for stopping the second trigger stop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810240848.XA CN108455403B (en) | 2018-03-22 | 2018-03-22 | Car follow-up elevator speed limiter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810240848.XA CN108455403B (en) | 2018-03-22 | 2018-03-22 | Car follow-up elevator speed limiter |
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| CN108455403A CN108455403A (en) | 2018-08-28 |
| CN108455403B true CN108455403B (en) | 2023-12-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109335912B (en) * | 2018-11-22 | 2023-10-27 | 迈格钠磁动力股份有限公司 | Triggering device of elevator safety protection equipment |
| CN111731978B (en) * | 2020-07-01 | 2022-01-28 | 浙江科技学院 | Novel speed limiter with uniform loading and vibration reduction protection functions and working method thereof |
| CN114104901B (en) * | 2021-11-18 | 2023-05-16 | 中建三局集团有限公司 | Follow-up speed limiter attached to car |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1460020A1 (en) * | 2003-03-20 | 2004-09-22 | Thyssenkrupp Elevator Manufacturing France S.A.S. | Elevator safety gear |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN103818797A (en) * | 2014-03-24 | 2014-05-28 | 袁昭成 | Speed limiter and safety gear linkage system based on elevator |
| CN106006287A (en) * | 2016-07-08 | 2016-10-12 | 东南电梯股份有限公司 | Speed limiter safety clamp lifting mechanism for saving elevator hoistway space |
| CN107539856A (en) * | 2016-06-29 | 2018-01-05 | 上海龙钰电梯配件有限公司 | A kind of elevator governor |
-
2018
- 2018-03-22 CN CN201810240848.XA patent/CN108455403B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1460020A1 (en) * | 2003-03-20 | 2004-09-22 | Thyssenkrupp Elevator Manufacturing France S.A.S. | Elevator safety gear |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN103818797A (en) * | 2014-03-24 | 2014-05-28 | 袁昭成 | Speed limiter and safety gear linkage system based on elevator |
| CN107539856A (en) * | 2016-06-29 | 2018-01-05 | 上海龙钰电梯配件有限公司 | A kind of elevator governor |
| CN106006287A (en) * | 2016-07-08 | 2016-10-12 | 东南电梯股份有限公司 | Speed limiter safety clamp lifting mechanism for saving elevator hoistway space |
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| CN108455403A (en) | 2018-08-28 |
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Address after: No. 555, Zhennan Road, High tech Zone, Hai'an County, Nantong City, Jiangsu Province 226600 Applicant after: Nantong Zhongli Technology Co.,Ltd. Address before: No. 555, Zhennan Road, High tech Zone, Hai'an County, Nantong City, Jiangsu Province 226600 Applicant before: NANTONG ZHONGLI HEAVY MACHINERY ENGINEERING Co.,Ltd. |
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