CN114249201A - Speed limiter for multi-car parallel elevator - Google Patents
Speed limiter for multi-car parallel elevator Download PDFInfo
- Publication number
- CN114249201A CN114249201A CN202011014343.5A CN202011014343A CN114249201A CN 114249201 A CN114249201 A CN 114249201A CN 202011014343 A CN202011014343 A CN 202011014343A CN 114249201 A CN114249201 A CN 114249201A
- Authority
- CN
- China
- Prior art keywords
- speed
- trigger
- wheel
- block
- speed limiter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009471 action Effects 0.000 claims abstract description 58
- 238000009434 installation Methods 0.000 claims abstract description 19
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000005381 potential energy Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 206010057071 Rectal tenesmus Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 208000012271 tenesmus Diseases 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a speed limiter for a multi-car parallel elevator, wherein the speed limiter is installed on a car, the car runs along a guide rail, the speed limiter comprises an installation body, a speed taking unit, a speed triggering unit, an electric action unit and a mechanical action unit, the installation body is a base of the speed limiter, the speed taking unit comprises a speed limiter wheel, the speed limiter wheel rolls along the guide rail, the speed triggering unit comprises a centrifugal block, the centrifugal block is positioned on one end face of the speed limiter wheel, and when the running speed of the car exceeds a set value, the centrifugal block generates centrifugal motion and triggers the electric action unit and the mechanical action unit. The speed limiter can be applied to straight rails and arc rails of multiple shafts, only the speed limiter mechanism is required to be integrally mounted on a lift car, and when the speed limiter is overspeed, the speed limiter wheel directly drives the trigger ring to wind the lifting rope, so that the safety tongs can be directly lifted to work. The speed limiter is directly and safely arranged on the lift car, and cannot generate relative movement and mistaken lifting action.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to a speed limiter for a multi-car parallel elevator.
Background
Elevators have become an indispensable manned or cargo vertical transport vehicle in modern society and economic activities. Since 1854 the invention of elevators, elevator cars have been operated by wire rope sheave traction drive, and machine rooms, traction motors and reduction gears were installed on the top floors of buildings to drive wire ropes to pull the cars and counterweights to operate on rails in the hoistway. The driving mode enables only one elevator car to normally run in a single shaft, and the elevator in the single-elevator-car running mode can meet the use requirement on low-rise buildings and floors with small passenger flow. With the rapid development of modern cities, high-rise buildings and super high-rise buildings with large population density are pulled out, the defects of long elevator waiting time and low conveying efficiency of the elevator in a single-car operation mode are continuously enlarged, and the traditional single-car elevator operation mode is difficult to adapt to the rapid development requirements of modern city buildings.
In order to improve the building space utilization rate and the elevator conveying efficiency and reduce the construction cost of the building and the elevator, a multi-car parallel elevator is being developed and applied along with the continuous development of the engineering technology level. The multi-car parallel elevator adopts the direct drive technology without the traction steel wire rope, so that a plurality of elevators can be simultaneously operated in the same shaft, and the elevators among the shafts can be switched to each other to operate in the shaft, so as to realize the overrunning operation.
The car moves along the guide rail, need set up the overspeed governor, and the overspeed governor is the safety arrangement of elevator, and under the condition that car functioning speed exceeded the limiting speed that the elevator overspeed governor set for, the overspeed governor can send the actuating signal and make elevator host computer stop operation, and when further speeding, can trigger safety tongs action centre gripping guide rail and make the elevator arrest, can prevent the elevator overspeed safety damage that the tenesmus leads to effectively.
Traditional overspeed governor is installed in the computer lab, and needs to run through the overspeed governor wire rope and the straining device of whole well, can only realize the overspeed protection on the vertical track of single well, can't satisfy the application demand of the parallel elevator of many cars. The traditional speed limiter is complex in arrangement mode and action process and large in occupied space, when the safety tongs are triggered to act, the steel wire rope stops moving through friction force, and the steel wire rope is damaged by each action; the traditional speed limiters are distributed, the speed limiters and the car move relatively, and the speed limiters are likely to be mistakenly pulled due to sudden change of the load of the car, so that the safety tongs are actuated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the speed limiter for the multi-car parallel elevator, the speed limiter can be applied to straight rails and arc-shaped rails of multiple shafts, only the speed limiter mechanism is required to be integrally installed on the car, the speed is acquired through the friction transmission of the contact between the speed limiter wheel and the guide rail, when the speed is exceeded, the safety tongs can be directly lifted to work by directly driving the trigger ring to wind the lifting rope, the arrangement and action processes are simple and reliable, and the occupied space is small. The speed limiter is directly and safely arranged on the car, and cannot generate relative movement and mistaken lifting action.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a overspeed governor for parallel elevator of many cars, the overspeed governor is installed on the car, and the car moves along the guide rail, the overspeed governor is including the installation body, get fast unit, speed trigger unit, electric action unit and mechanical action unit, and the installation body does the base of overspeed governor gets fast unit and rotationally installs on the installation body, gets fast unit and includes the overspeed governor wheel, and the overspeed governor wheel rolls along the guide rail, and speed trigger unit includes the centrifugation piece, and the centrifugation piece is located an terminal surface of overspeed governor wheel, and when car functioning speed exceeded the setting value, the centrifugation piece took place centrifugal motion and triggered electric action unit and mechanical action unit.
As a further improvement of the above technical solution:
mechanical action unit triggers ring, lifting rope and at least one and triggers ring attenuator, triggers the ring and rotationally installs on the installation body for realize stably triggering the ring trigger attenuator of ring and install on the installation body, lifting rope's one end is fixed and is triggered on the ring, the other end directly or indirectly connects safety tongs, can drive when centrifugal piece takes place centrifugal motion and trigger the ring and rotate and coil lifting rope.
The governor wheel is in direct contact with the guide rail and rolls along the guide rail.
The speed limiter is further provided with a speed-taking wheel transmission mechanism, the speed-taking wheel transmission mechanism comprises a roller wheel and a transmission device, the roller wheel rolls along the guide rail, the two sides of the transmission device are respectively connected with the speed limiter wheel and the roller wheel, and the roller wheel drives the speed limiter wheel to rotate through the transmission device.
The centrifugal block comprises a big head end and a small head end which are integrally connected, and the middle part of the centrifugal block is hinged on the speed limiter wheel through a hinged joint.
The speed trigger unit comprises two centrifugal blocks, a linkage rod and a tension spring, the two centrifugal blocks are arranged on the same end face of the speed limiter wheel in a central symmetry mode relative to a rotating shaft of the speed limiter wheel, one end of the tension spring is fixedly connected to the end face, the other end of the tension spring is connected with the large head end of one centrifugal block, and the small head end of the centrifugal block is connected with the large head end of the other centrifugal block through the linkage rod.
The speed trigger unit also comprises a mechanical trigger block, the mechanical trigger block is hinged on the speed limiter wheel and is positioned on the same end face with the centrifugal block, when the centrifugal block generates centrifugal motion, the centrifugal block impacts the mechanical trigger block, the mechanical trigger block triggers the mechanical action unit, and the distance between the electrical action unit and the rotating shaft of the speed limiter wheel is smaller than the distance between the mechanical trigger block and the rotating shaft of the speed limiter wheel.
The mechanical trigger block comprises a trigger limiting block, a trigger limiting block reset spring, a pawl reset spring and two limiting blocks, the trigger limiting block is hinged on the speed limiter wheel, the centrifugal block is positioned on the same end face and can rotate in a plane parallel to the end face, the trigger limiting block reset spring is a torsional spring for limiting the rotation range of the trigger limiting block, the two limiting blocks for limiting the rotation range of the trigger limiting block and the pawl are respectively fixed on the speed limiter wheel, when the trigger limiting block contacts one limiting block, the trigger limiting block reset spring is in a state with elastic potential energy, one end of the pawl is hinged on the speed limiter wheel, the pawl and the centrifugal block are positioned on the same end face and can rotate around a hinged end in a plane parallel to the end face, the pawl reset spring is a torsional spring for limiting the rotation range of the pawl, the other end of the pawl can contact the trigger limiting block, and when the pawl contacts the trigger limiting block, the pawl return spring is in a state with elastic potential energy, and when the pawl is separated from the trigger limiting block, the pawl rotates along the pointer under the action force of the pawl return spring until the pawl is blocked by the limiting block.
Trigger the ring and be annular ratchet structure, the tooth of ratchet is installed in the inboard that triggers the ring, and when the pawl was thrown off and is triggered the stopper, the pawl can touch the tooth that triggers the ring.
The electric action unit is arranged on the installation body, the electric action unit is a normally closed safety switch which is connected in series with an electric loop of the elevator, and the electric action unit is disconnected after the centrifugal block impacts the electric action unit.
The invention has the beneficial effects that:
1) the speed limiter can be applied to straight rails and arc rails of multiple wells, does not need to penetrate through a steel wire rope of the whole well and a tensioning mechanism of the steel wire rope, and is simple in structure.
2) The overspeed governor only needs to install overspeed governor mechanism integration on the car, acquires speed through the friction drive of overspeed governor wheel and guide rail contact, and during the hypervelocity, the overspeed governor wheel directly drives and triggers ring coiling lifting rope and can directly carry and draw the safety tongs work, arranges, the action process is simple reliable, and occupation space is little.
3) The overspeed governor triggers safety tongs and realizes through triggering ring coiling lifting rope when moving, triggers ring and lifting rope one end and is fixed connection, the phenomenon of skidding does not need big frictional force, simultaneously along with triggering the rotation of ring (the operation of car), can strain the lifting rope gradually, makes the lifting force increase, and the action is reliable.
4) The speed limiter is directly and safely arranged on the car, and cannot generate relative movement and mistaken lifting action.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an un-triggered electrical operating unit and a mechanical operating unit of a centrifugal block.
FIG. 2 is a schematic structural diagram of a centrifugal block after triggering an electrical action unit and a mechanical action unit according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a speed fetching unit and a speed trigger unit according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a mechanical trigger block according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
A speed governor for a multi-car parallel elevator comprises an installation body 1, a speed taking unit, a speed trigger unit, an electric action unit 4 and a mechanical action unit, as shown in figures 1-4.
The speed taking unit comprises a speed limiter wheel 2-1 and a wheel shaft 2-2. The wheel shaft 2-2 is fixedly arranged on the mounting body 1, and the speed limiter wheel 2-1 is arranged on the wheel shaft 2-2 through a bearing, namely the speed limiter wheel 2-1 can freely rotate relative to the wheel shaft 2-2. The speed of rotation of the governor wheel 2-1 is related to the operating speed of the car by, but not limited to: the first method is as follows: the speed limiter wheel 2-1 is in direct contact with the guide rail, when the lift car moves, the speed limiter wheel 2-1 rolls along the guide rail in a friction transmission mode, and at the moment, the speed limiter wheel 2-1 is directly used as a speed taking wheel. The second method comprises the following steps: if the speed limiter wheel 2-1 is not convenient to directly contact with the guide rail under the influence of arrangement, a speed-taking wheel transmission mechanism can be additionally arranged, and the two sides of the speed-taking wheel transmission mechanism are respectively connected with the guide rail and the speed limiter wheel 2-1. Specifically, the speed-taking wheel transmission mechanism comprises a roller wheel and a transmission device, the roller wheel rolls along a guide rail, two sides of the transmission device are respectively connected with the speed limiter wheel 2-1 and the roller wheel, and the roller wheel drives the speed limiter wheel 2-1 to rotate through the transmission device. The transmission device is a transmission belt, a transmission chain wheel and the like. In this way the speed of travel of the car can be transmitted to the governor wheel 2-1. In order to ensure the reliable speed taking, a tensioning mechanism can be additionally arranged to ensure that the speed taking wheel is more reliably contacted with the guide rail.
The speed trigger unit comprises a linkage rod 3-2, a mechanical trigger block, a tension spring 3-7, two centrifugal blocks 3-1 and a plurality of hinged joints 3-3. The mechanical trigger block comprises a trigger limit block 3-4, a trigger limit block return spring 3-4-1, a pawl 3-6, a pawl return spring 3-6-1 and two limit blocks 3-5. Two centrifugal blocks 3-1 are arranged on the same end surface of the speed limiter wheel 2-1 in a centrosymmetric manner relative to the rotating shaft of the speed limiter wheel 2-1. The centrifugal block 3-1 comprises a big head end and a small head end which are integrally connected, the middle part of the centrifugal block 3-1 is hinged on the speed limiter wheel 2-1 through a hinged joint 3-3, namely, the centrifugal block 3-1 can rotate around the hinged joint 3-3 in a plane parallel to the speed limiter wheel 2-1. One end of a tension spring 3-7 is fixedly connected on the end face, the other end is connected with a big head end of a centrifugal block 3-1, and a small head end of the centrifugal block 3-1 is connected with a big head end of another centrifugal block 3-1 through a linkage rod 3-2. The linkage rod 3-2 is rigid, and two ends of the linkage rod 3-2 are respectively hinged with the two centrifugal blocks 3-1, so that the two centrifugal blocks 3-1 rotate synchronously. When the speed limiter wheel 2-1 rotates, the rotation direction is anticlockwise, and two centrifugal blocks 3-1 are driven to move as shown by the arrow direction on the speed limiter wheel 2-1 in the drawing; when the rotating speed of the speed limiter wheel 2-1 exceeds a certain value, the centrifugal block 3-1 can generate centrifugal motion, the centrifugal block 3-1 moves along with the speed limiter wheel 2-1, meanwhile, the hinged joint 3-3 serves as a central shaft to rotate, the rotating direction is anticlockwise, the direction of an arrow on the centrifugal block 3-1 in the drawing shows, namely the rotating direction is that the big end moves towards the direction far away from the rotating shaft of the speed limiter wheel 2-1, and the tensioning spring 3-7 is stretched. The big end of the centrifugal block 3-1 triggers the electric action unit 4 and the mechanical action unit to act in sequence. When the rotating speeds of the speed limiter wheels 2-1 are different, the rotating angles of the centrifugal blocks 3-1 around the hinged joints 3-3 are different.
The triggering limiting block 3-4 is hinged on the speed limiter wheel 2-1 and is positioned on the same end face as the centrifugal block 3-1, and can rotate in a plane parallel to the end face. The trigger limiting block 3-4 comprises two limiting rods, the two limiting rods are intersected at the hinged part, the trigger limiting block reset spring 3-4-1 is a torsion spring, and has a tendency of urging the trigger limiting block 3-4 to rotate in the counterclockwise direction, as shown in the arrow direction at the edge of the trigger limiting block 3-4 in fig. 4. Two limit blocks 3-5 are fixed on the speed limiter wheel 2-1 and respectively limit the further rotation of the trigger limit blocks 3-4 and the pawls 3-6. For the triggering limiting block 3-4, when one limiting rod of the triggering limiting block 3-4 contacts one limiting block 3-5, the triggering limiting block reset spring 3-4-1 is not in a free state but in a state with elastic potential energy, and at the moment, the distance between the limiting rod of the triggering limiting block 3-4, which does not contact the limiting block 3-5, and the rotating shaft of the speed limiter wheel 2-1 is smaller than the distance between the limiting rod of the triggering limiting block 3-5 and the rotating shaft of the speed limiter wheel 2-1.
One end of the pawl 3-6 is hinged on the speed limiter wheel 2-1, and the pawl 3-6 and the centrifugal block 3-1 are positioned on the same end surface and can rotate around the hinged end in a plane parallel to the end surface. Pawl return spring 3-6-1 is a torsion spring having a tendency to urge pawl 3-6 to rotate in a clockwise direction as shown by the arrow on the side of pawl 3-6 in FIG. 4. The other end of the pawl 3-6 can contact a limiting rod which contacts the limiting block 3-5 of the trigger limiting block 3-4, at the moment, the other ends of the limiting block 3-5 and the pawl 3-6 are respectively positioned at two sides of the limiting rod, and when the other end of the pawl 3-6 contacts the limiting rod, the pawl reset spring 3-6-1 is not in a free state, but is in a state with elastic potential energy. The distance between the limiting block 3-5 of the limiting pawl 3-6 and the hinged end of the pawl 3-6 is smaller than the distance between the overhanging end of the pawl 3-6, and when the pawl 3-6 is separated from the triggering limiting block 3-4, the pawl 3-6 rotates along the pointer under the action of the pawl return spring 3-6-1 until the limiting block 3-5 blocks the pawl.
When the speed limiter wheel 2-1 rotates anticlockwise and the rotating speed reaches a certain value, the centrifugal block 3-1 generates centrifugal motion, or the big head end of the centrifugal block 3-1 moves towards the direction far away from the rotating shaft of the speed limiter wheel 2-1, the big head end of the centrifugal block 3-1 can impact the limiting rod of the trigger limiting block 3-4, the limiting rod is not in contact with the limiting block 3-5, the trigger limiting block 3-4 rotates clockwise, the pawl 3-6 is separated from the pawl 3-6, the pawl 3-6 rotates clockwise under the action of the elastic force of the pawl reset spring 3-6-1 and is blocked by the limiting block 3-5, and the pawl 3-6 contacts with the mechanical action unit along with the continuous rotation of the speed limiter wheel 2-1.
The electric action unit 4 is arranged on the installation body 1, the electric action unit 4 is a normally closed safety switch which is connected in series with an electric loop of the elevator, after the centrifugal block 3-1 impacts the electric action unit 4, the electric action unit 4 is disconnected, namely the normally closed safety switch of the electric loop is disconnected, and the elevator main machine stops running.
The distance between the electric action unit 4 and the rotating shaft of the speed limiter wheel 2-1 is smaller than the distance between the trigger limit block 3-4 and the rotating shaft of the speed limiter wheel 2-1. Namely, when the speed limiter wheel 2-1 rotates anticlockwise, the centrifugal block 3-1 firstly impacts the electric action unit 4 and then impacts the trigger limiting block 3-4 along with the increase of the rotating speed.
The mechanical action unit comprises a trigger ring 5-1, a lifting rope 5-3, a guide wheel 5-4 and at least one trigger ring damper 5-2. The trigger ring 5-1 is of an annular ratchet structure, teeth of a ratchet are arranged on the inner side of the trigger ring 5-1, when the pawls 3-6 are disengaged from the trigger limiting blocks 3-4, the pawls 3-6 rotate clockwise under the action of elastic force of the pawl return springs 3-6-1 and are blocked by the limiting blocks 3-5, and with the continuous anticlockwise rotation of the speed limiter wheel 2-1, the pawls 3-6 can touch the teeth of the trigger ring 5-1 and drive the trigger ring 5-1 to rotate anticlockwise. The trigger ring 5-1 is mounted on the axle 2-2 by bearings and freely rotatable relative to the axle 2-2. The trigger ring damper 5-2 is installed on the installation body 1 and contacts with the trigger ring 5-1, so that the trigger ring 5-1 is stabilized, and the trigger ring is prevented from rotating without being driven by the pawl 3-6.
One end of the lifting rope 5-3 is fixed on the triggering ring 5-1, and the other end is connected with the safety gear directly or indirectly. When the trigger ring 5-1 rotates, the lifting rope 5-3 can be wound on the trigger ring 5-1 in a rotating mode, the other end of the lifting rope 5-3 achieves the action of lifting and triggering the safety gear, so that the safety gear clamps the guide rail, and the elevator is stopped. The technical solution of indirectly connecting the safety gear with the lifting rope 5-3 is disclosed in the patent with the applicant's application number 2020108262510, and the detailed structure is not repeated here.
If the safety tongs are influenced by arrangement, a guide wheel 5-4 can be additionally arranged on the path of the lifting rope 5-3, the direction of the lifting rope 5-3 is changed, lifting in different directions is realized, and the arrangement relation between the speed limiter and the safety tongs is not limited.
The working process of the invention is as follows: the speed limiter wheel 2-1 and the lift car run along the guide rail, and the speed limiter wheel 2-1 rolls along the guide rail anticlockwise or is driven to rotate by the wheel rolling along the guide rail. When the speed limiter wheel 2-1 rotates anticlockwise and the rotating speed reaches a certain value, the centrifugal block 3-1 generates centrifugal motion, or the big head end of the centrifugal block 3-1 moves towards the direction far away from the rotating shaft of the speed limiter wheel 2-1, along with the increase of the speed limiter wheel 2-1, the big head end of the centrifugal block 3-1 firstly impacts the electric action unit 4, the electric action unit 4 is disconnected, namely the normally closed safety switch of the electric loop is disconnected, and the elevator main machine stops running. Then the big head end of the centrifugal block 3-1 impacts a limiting rod of the trigger limiting block 3-4, which is not in contact with the limiting block 3-5, so that the trigger limiting block 3-4 rotates clockwise, the pawl 3-6 is disengaged from the pawl 3-6, the pawl 3-6 rotates clockwise under the action of the elastic force of the pawl reset spring 3-6-1 and is blocked by the limiting block 3-5, and along with the continuous anticlockwise rotation of the speed limiter wheel 2-1, the pawl 3-6 can touch the teeth of the trigger ring 5-1, so that the resistance of the trigger ring damper 5-2 to the trigger ring 5-1 is overcome, and the trigger ring 5-1 is driven to rotate anticlockwise. After the trigger ring 5-1 rotates, one end of the lifting rope 5-3 rotates on the trigger ring 5-1, the other end of the lifting rope transmits drive to the safety tongs, and the safety tongs are lifted to clamp the guide rail, so that braking is realized. The reset of the speed governor after the action can reset the speed governor by resetting the trigger limiting block 3-4, the pawl 3-6 and the trigger ring 5-1 to the initial state.
Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the insubstantial modifications and adaptations made by those skilled in the art according to the above descriptions of the present invention are within the scope of the present invention.
Claims (10)
1. A speed limiter for a multi-car parallel elevator, characterized in that the speed limiter is mounted on a car, which runs along guide rails, the speed governor comprises an installation body (1), a speed taking unit, a speed triggering unit, an electric action unit (4) and a mechanical action unit, wherein the installation body (1) is a base of the speed governor, the speed taking unit is rotatably installed on the installation body (1), the speed taking unit comprises a speed governor wheel (2-1), the speed governor wheel (2-1) rolls along a guide rail, the speed triggering unit comprises a centrifugal block (3-1), the centrifugal block (3-1) is positioned on one end face of the speed governor wheel (2-1), when the running speed of the car exceeds a set value, the centrifugal block (3-1) generates centrifugal motion and triggers the electric action unit (4) and the mechanical action unit.
2. The governor of claim 1, wherein: mechanical action unit is including triggering ring (5-1), lifting rope (5-3) and at least one trigger ring attenuator (5-2), trigger ring (5-1) rotationally install on installation body (1), trigger ring attenuator (5-2) for realizing stable trigger ring (5-1) are installed on installation body (1), the one end of lifting rope (5-3) is fixed on triggering ring (5-1), the other end directly or indirectly connects safety tongs, can drive when centrifugal block (3-1) takes place centrifugal motion and trigger ring (5-1) rotation and coiling lifting rope (5-3).
3. The governor of claim 1, wherein: the speed limiter wheel (2-1) is in direct contact with the guide rail and rolls along the guide rail.
4. The governor of claim 1, wherein: the speed governor is further provided with a speed-taking wheel transmission mechanism, the speed-taking wheel transmission mechanism comprises a roller wheel and a transmission device, the roller wheel rolls along the guide rail, two sides of the transmission device are respectively connected with the speed governor wheel (2-1) and the roller wheel, and the roller wheel drives the speed governor wheel (2-1) to rotate through the transmission device.
5. The governor of claim 2, wherein: the centrifugal block (3-1) comprises a big head end and a small head end which are integrally connected, and the middle part of the centrifugal block (3-1) is hinged on the speed limiter wheel (2-1) through a hinged joint (3-3).
6. The governor of claim 5, wherein: the speed trigger unit comprises two centrifugal blocks (3-1), and further comprises a linkage rod (3-2) and a tensioning spring (3-7), wherein the two centrifugal blocks (3-1) are arranged on the same end face of the speed limiter wheel (2-1) in a central symmetry manner relative to a rotating shaft of the speed limiter wheel (2-1), one end of the tensioning spring (3-7) is fixedly connected to the end face, the other end of the tensioning spring is connected with the large end of one centrifugal block (3-1), and the small end of the centrifugal block (3-1) is connected with the large end of the other centrifugal block (3-1) through the linkage rod (3-2).
7. The governor of claim 5 or 6, wherein: the speed trigger unit further comprises a mechanical trigger block, the mechanical trigger block is hinged to the speed limiter wheel (2-1) and located on the same end face as the centrifugal block (3-1), when the centrifugal block (3-1) performs centrifugal motion, the centrifugal block (3-1) impacts the mechanical trigger block, the mechanical trigger block triggers the mechanical action unit, and the distance between the electrical action unit (4) and the rotating shaft of the speed limiter wheel (2-1) is smaller than the distance between the mechanical trigger block and the rotating shaft of the speed limiter wheel (2-1).
8. The governor of claim 7, wherein: the mechanical trigger block comprises a trigger limiting block (3-4), a trigger limiting block reset spring (3-4-1), a pawl (3-6), a pawl reset spring (3-6-1) and two limiting blocks (3-5), the trigger limiting block (3-4) is hinged on the speed limiter wheel (2-1), and the centrifugal block (3-1) is positioned on the same end surface and can rotate in a plane parallel to the end surface, the trigger limiting block reset spring (3-4-1) is a torsion spring for limiting the rotation range of the trigger limiting block (3-4), the two limiting blocks (3-5) for respectively limiting the rotation ranges of the trigger limiting block (3-4) and the pawl (3-6) are fixed on the speed limiter wheel (2-1), when the trigger limiting block (3-4) contacts one limiting block (3-5), the trigger limiting block return spring (3-4-1) is in a state with elastic potential energy, one end of the pawl (3-6) is hinged to the speed limiter wheel (2-1), the pawl (3-6) and the centrifugal block (3-1) are located on the same end face and can rotate around the hinged end in a plane parallel to the end face, the pawl return spring (3-6-1) is a torsion spring limiting the rotation range of the pawl (3-6), the other end of the pawl (3-6) can contact the trigger limiting block (3-4), when the pawl (3-6) contacts the trigger limiting block (3-4), the pawl return spring (3-6-1) is in the state with the elastic potential energy, and after the pawl (3-6) is separated from the trigger limiting block (3-4), the pawl (3-6) can move forward under the acting force of the pawl return spring (3-6-1) The pointer rotates to be blocked by the limiting block (3-5).
9. The governor of claim 8, wherein: the trigger ring (5-1) is of an annular ratchet structure, teeth of a ratchet are arranged on the inner side of the trigger ring (5-1), and when the pawls (3-6) are disengaged from the trigger limiting blocks (3-4), the pawls (3-6) can touch the teeth of the trigger ring (5-1).
10. The governor of claim 1, wherein: the electric action unit (4) is arranged on the installation body (1), the electric action unit (4) is a normally closed safety switch which is connected in series with an electric loop of the elevator, and the electric action unit (4) is disconnected after the centrifugal block (3-1) impacts the electric action unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014343.5A CN114249201A (en) | 2020-09-24 | 2020-09-24 | Speed limiter for multi-car parallel elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011014343.5A CN114249201A (en) | 2020-09-24 | 2020-09-24 | Speed limiter for multi-car parallel elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114249201A true CN114249201A (en) | 2022-03-29 |
Family
ID=80789911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011014343.5A Pending CN114249201A (en) | 2020-09-24 | 2020-09-24 | Speed limiter for multi-car parallel elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114249201A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961371A (en) * | 2022-06-11 | 2022-08-30 | 北京首嘉钢结构有限公司 | Speed limiting device of vertical lifting type stereo garage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002096982A (en) * | 2000-09-20 | 2002-04-02 | Mitsubishi Electric Corp | Elevator device |
| JP2004338901A (en) * | 2003-05-16 | 2004-12-02 | Mitsubishi Electric Corp | Emergency stop device for elevator |
| RU2010119975A (en) * | 2010-05-18 | 2011-11-27 | Государственное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительны | EMERGENCY BRAKE SYSTEM OF THE LIFT CAB |
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| JP2019006587A (en) * | 2017-06-28 | 2019-01-17 | 株式会社日立製作所 | Emergency-stop actuation device for elevator |
| CN211169391U (en) * | 2019-12-02 | 2020-08-04 | 浙江沃尔森电梯有限公司 | Car following type speed limiter |
-
2020
- 2020-09-24 CN CN202011014343.5A patent/CN114249201A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002096982A (en) * | 2000-09-20 | 2002-04-02 | Mitsubishi Electric Corp | Elevator device |
| JP2004338901A (en) * | 2003-05-16 | 2004-12-02 | Mitsubishi Electric Corp | Emergency stop device for elevator |
| RU2010119975A (en) * | 2010-05-18 | 2011-11-27 | Государственное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительны | EMERGENCY BRAKE SYSTEM OF THE LIFT CAB |
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| JP2019006587A (en) * | 2017-06-28 | 2019-01-17 | 株式会社日立製作所 | Emergency-stop actuation device for elevator |
| CN211169391U (en) * | 2019-12-02 | 2020-08-04 | 浙江沃尔森电梯有限公司 | Car following type speed limiter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961371A (en) * | 2022-06-11 | 2022-08-30 | 北京首嘉钢结构有限公司 | Speed limiting device of vertical lifting type stereo garage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101759076B (en) | Elevator buffer | |
| CN108408530B (en) | Two-way overspeed protection device for linear motor direct-drive elevator | |
| CN102514996A (en) | Elevator speed limiting device | |
| KR20020030119A (en) | Method for braking a traction sheave elevator, traction sheave elevator and use of an emergency power supply | |
| CN100581971C (en) | Wireless speed limiting system of elevator | |
| JPH10504267A (en) | Non-slip traction machine | |
| CN114249201A (en) | Speed limiter for multi-car parallel elevator | |
| CN200949324Y (en) | Dynamometric protective device of Lifting and transverse vehicle loading plate stereoscopic garage | |
| CN200988715Y (en) | Rope-free speed limiting system for lift | |
| CN103407855A (en) | Elevator speed governor | |
| CN2827980Y (en) | Elevator two-way speed limiter without machine room | |
| JP2002020054A (en) | Variable traction mechanism | |
| CN114249204A (en) | Safety tongs for multi-car parallel elevator | |
| CN114249205A (en) | Retarder for multi-car parallel elevator | |
| CN105293245B (en) | Elevator of winding drum type anti-fall device | |
| CN2672019Y (en) | Drag wheel with braking and buffering function | |
| CN115849230A (en) | Anti-falling safety braking device for cabin module lifting | |
| CN205023648U (en) | Elevator speed governor | |
| CN114249203A (en) | Safety protection device for multi-car parallel elevator | |
| CN209065224U (en) | Elevator end station protects structure | |
| CN208200056U (en) | It is a kind of for overhauling the protective device of elevator | |
| CN217676210U (en) | Speed limiter of machine-room-less elevator | |
| CN214610984U (en) | Speed taking mechanism for multi-car parallel elevator | |
| CN113023521B (en) | Safety anti-falling device suitable for multi-car circulating running elevator and implementation method | |
| CN218909501U (en) | Anti-sedimentation device for goods elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |