CN111153309A - Combined and independent hybrid drive double-car elevator and driving method thereof - Google Patents
Combined and independent hybrid drive double-car elevator and driving method thereof Download PDFInfo
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- CN111153309A CN111153309A CN202010132968.5A CN202010132968A CN111153309A CN 111153309 A CN111153309 A CN 111153309A CN 202010132968 A CN202010132968 A CN 202010132968A CN 111153309 A CN111153309 A CN 111153309A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
- B66B11/0095—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave where multiple cars drive in the same hoist way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
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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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a combined and independent mixed driving double-car elevator and a driving method thereof, which comprises a main lifting system, wherein the main lifting system comprises a main car and a main tractor, the double-car elevator also comprises an auxiliary lifting system which can move along with the main lifting system, also can move independently relative to the main lifting system and can drive the main car to move, and a balance rope guide wheel set arranged below the auxiliary lifting system, the auxiliary lifting system comprises an auxiliary car arranged below the main car, an auxiliary control wheel set arranged below the main car, an auxiliary traction rope and an auxiliary tractor which are connected with the auxiliary car and wound on the auxiliary control wheel set, the main car and the auxiliary car can not only run independently, but also can keep the vertical distance between the main car and the auxiliary car unchanged by mechanical measures of releasing and applying a brake to the auxiliary control wheel, so that the main car and the auxiliary car can run jointly by virtue of one tractor, thereby overcoming the operation problem of the twin elevator when a certain traction machine has a fault.
Description
Technical Field
The invention belongs to the field of elevator equipment, and particularly relates to a combined and independent hybrid drive double-car elevator and a driving method thereof.
Background
The existing twin elevator is that a main car and an auxiliary car independently operate, and after a traction machine corresponding to an upper car fails, the upper car dragged by the traction machine cannot work, so that the upper car occupies the space position of an upper shaft and affects the operation of a lower car, thereby reducing the safety and lowering the conveying efficiency; meanwhile, after the traction machine corresponding to the lower lift car fails, the lower lift car dragged by the traction machine cannot work, so that the lower lift car occupies the space position of a lower shaft and the operation of the upper lift car is also influenced, thereby reducing the safety and the conveying efficiency; in addition, when a certain tractor runs by mistake or the brake fails, the minimum approaching distance between the main car and the auxiliary car cannot be effectively guaranteed; and when the main car and the auxiliary car of the twin elevator do joint operation with unchanged space, because each car actually operates independently, the requirement on electric control precision and stability is extremely high, accurate equidistant operation of the twin cars is difficult to realize, and the twin elevator can not be suitable for the working condition of the equidistant operation of the twin cars. In order to overcome the defects of the prior art, the invention provides a combined and independent hybrid drive double-car elevator and a method, so that the double-car elevator can be used for driving a main car and an auxiliary car independently like a twin-sub elevator, and can also be used for driving the following two cars: after a certain traction machine fails, one traction machine is used for dragging two cages, so that the safe operation and the conveying efficiency are guaranteed; meanwhile, aiming at the defect that the requirement on electric control precision and stability is high when the twin elevator maintains combined operation, the mechanical device is adopted to maintain the vertical distance between the main car and the auxiliary car unchanged.
Disclosure of Invention
The invention aims to provide a combined and independent hybrid drive double-car elevator and a driving method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a unite and two car elevators of independent hybrid drive, it includes main operating system, main operating system includes main car and main hauler, two car elevators still include can be along with main operating system motion, also can for main operating system independent motion and can drive the vice operating system of main car motion, and locate the balanced rope direction wheelset of vice operating system below, vice operating system is including locating vice car below the main car, install in the auxiliary control wheelset of main car below, with vice car be connected and around assist towline, the assistance hauler on the auxiliary control wheelset, the assistance hauler has drive, braking and three kinds of operating condition of free rotation, the auxiliary control wheelset has two kinds of states of release braking and braking, when the braking of auxiliary control wheelset, main car with vice car by main hauler independent drive synchronous motion or by the independent synchronous drive motion of assistance hauler respectively or by the independent synchronous drive motion of assistance hauler The main tractor and the auxiliary tractor are driven independently to act synchronously, and when the auxiliary control wheel set releases braking, the main car and the auxiliary car are driven independently by the main tractor and the auxiliary tractor respectively.
Optimally, when the driving ratio of the double-car elevator is 1:1,
the main lifting system also comprises a main guide wheel, a main counterweight, a main balance rope and a main traction rope which is connected between the main lift car and the main counterweight and bypasses the main traction machine and the main guide wheel;
the auxiliary lifting system comprises an auxiliary counterweight, an auxiliary upper guide wheel, an auxiliary balance rope guide wheel and an auxiliary balance rope, wherein the auxiliary upper guide wheel is positioned in a well and above the main car;
balance rope leading wheel group has two and is used for respectively winding and establishes main balance rope with assist the stabilizer wheel of balance rope, two the stabilizer wheel can rotate relatively independently, main balance rope one end and main heavy lower extreme fixed connection, the other end walk around main balance rope leading wheel and one of them stabilizer wheel after with assist the bottom fixed connection of car, assist balance rope one end and assist heavy lower extreme fixed connection, the other end walk around assist behind balance rope leading wheel and one of them stabilizer wheel with assist the bottom fixed connection of car.
Furthermore, the auxiliary upper guide wheel and the auxiliary traction machine are respectively positioned on two sides above the main car.
Further, every group the supplementary control wheelset is equipped with supplementary control wheel, assists the lower guide pulley group in proper order to the outside position in the middle of by supplementary control wheelset, and supplementary control wheel has release braking and two kinds of states of braking, it corresponds one respectively to assist the towline supplementary control wheelset to upwards extend respectively from the top of assisting the car and walk around and correspond respectively behind the supplementary control wheel, downwardly extending again and walk around and correspond respectively assist lower guide pulley group, then one of them upwards extend to assist on the guide wheel, walk around behind the supplementary hauler with assist heavy looks fixed connection, another upwards extend directly walk around behind the supplementary hauler with assist heavy looks fixed connection.
Furthermore, each auxiliary lower guide wheel set comprises two auxiliary lower guide wheels, and the two auxiliary lower guide wheels on the outermost side in the two auxiliary lower guide wheel sets are respectively positioned below the auxiliary upper guide wheel and the auxiliary traction machine.
Optimally, when the drive ratio of the elevator is 2:1,
the main lifting system also comprises a main car diversion sheave, a main guide pulley, a main counterweight diversion sheave, a main balance rope and a main hoisting rope, wherein the main car diversion sheave, the main guide pulley, the main counterweight diversion sheave, the main balance rope and the main hoisting rope are arranged above the main car, one end of the main hoisting rope is fixed in the hoistway and positioned above the highest point of the advancing path of the main counterweight, the other end of the main hoisting rope downwards bypasses the main counterweight diversion sheave, upwards bypasses the main guide pulley, upwards bypasses the main hoisting machine from above, downwards bypasses the main car diversion sheave, and finally upwards extends and is fixed in the hoistway and positioned above the highest point of the advancing path of the main car;
the auxiliary lifting system comprises an auxiliary counterweight, an auxiliary upper guide wheel positioned in the shaft and above the main car, an auxiliary balance rope guide wheel positioned in the shaft and below the auxiliary traction machine, an auxiliary balance rope and an auxiliary counterweight diversion sheave arranged on the top of the auxiliary car, at least two auxiliary control sheave groups are symmetrically arranged below the main car, one end of the auxiliary traction rope is fixed in the shaft and above the highest point of the auxiliary counterweight advancing path, the other end of the auxiliary counterweight pulley is downward wound around the auxiliary counterweight pulley, upward wound around the auxiliary traction machine, upward wound around the auxiliary upper guide wheel, downward wound around one of the auxiliary control wheel groups, downward wound around the auxiliary car pulley, upward wound around the other symmetrical auxiliary control wheel group, upward extended and fixed in the hoistway and positioned above the highest point of the main car traveling path;
balance rope leading wheel group has two and is used for respectively winding and establishes main balance rope with assist the stabilizer wheel of balance rope, two the stabilizer wheel can rotate relatively independently, main balance rope one end and main heavy lower extreme fixed connection, the other end walk around main balance rope leading wheel and one of them stabilizer wheel after with assist the bottom fixed connection of car, assist balance rope one end and assist heavy lower extreme fixed connection, the other end walk around assist behind balance rope leading wheel and one of them stabilizer wheel with assist the bottom fixed connection of car.
Further, every group the auxiliary control wheelset is equipped with auxiliary control wheel, assists the lower guide wheelset by middle outside position in proper order, and auxiliary control wheel has release braking and two kinds of states of braking, assist towline one end be fixed in the well and be located assist in to heavily advancing the peak top in route, its another tip is walked around downwards assist to heavily diverting sheave, upwards walk around again auxiliary hauler from the top walk around again assist the leading wheel, again walk around one of them downwards assist down behind the guide wheelset, upwards walk around auxiliary control wheel, again downwards walk around auxiliary car diverting sheave again, upwards walk around another of symmetry behind the auxiliary control wheelset, downwards walk around another of symmetry behind the auxiliary control wheelset assist down behind the direction, upwards extend and be fixed in the well and be located the top of main car route of advancing.
The invention also provides a driving method based on combined and independent hybrid driving double-car elevator, which comprises the following steps: the auxiliary control wheel releases the brake to become a guide wheel, then the main traction machine controls the main car to move or stop, the auxiliary traction machine controls the auxiliary car to move or stop, the auxiliary car is independently controlled by the auxiliary traction machine, and at the moment, the main car and the auxiliary car run in a mutually independent driving mode.
The invention also provides a driving method based on combined and independent hybrid driving double-car elevator, which comprises the following steps: the auxiliary control wheel applies a brake and the auxiliary traction machine releases driving and braking, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, then the main traction machine drives and controls the main car to move, the main car and the auxiliary car move in the vertical direction through the driving of the main traction machine, and the main car drives the auxiliary car to jointly move together and keep a fixed distance.
The invention also provides a driving method based on combined and independent hybrid driving double-car elevator, which comprises the following steps: the auxiliary control wheel applies a brake, the main traction machine releases driving and braking, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, the auxiliary traction machine drives and controls the auxiliary car to move, the main car and the auxiliary car move in the vertical direction through the auxiliary traction machine, the auxiliary traction rope is braked by the auxiliary control wheel to drive the main car to jointly move along with the auxiliary car, and a fixed distance is kept.
The invention also provides a driving method based on combined and independent hybrid driving double-car elevator, which comprises the following steps: the auxiliary control wheel applies a brake, the auxiliary traction machine drives the auxiliary car to move and the main traction machine drives the main car to move, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, the two traction machines synchronously drive the main car and the auxiliary car to jointly move, a fixed distance is kept, and the position of the two traction machines is changed in the vertical direction.
The invention has the beneficial effects that: the main car and the auxiliary car can independently run, and the vertical distance between the main car and the auxiliary car can be kept unchanged through mechanical measures of releasing and applying a brake to the auxiliary control wheel, so that the main car and the auxiliary car can run jointly by depending on one tractor, and the running problem of the twin elevator when a certain tractor breaks down is solved. In addition, under the non-fault working condition, the elevator maintains the combined operation of constant vertical spacing through the electric control measure, the mechanical measure of the auxiliary braking control wheel adopted by the double-car elevator is high in stability and easy to realize, and the mechanical measure can further guarantee the lowest approach distance between the main car and the auxiliary car, so that the elevator operates more safely. In addition, an auxiliary traction machine combined driving method is adopted, so that safe driving under the failure of the main traction machine can be realized, namely when the main traction machine fails, the main traction machine loses power, the auxiliary control wheel releases a brake, the auxiliary traction machine drives and controls the auxiliary traction rope to drive the auxiliary lift car to move, when the auxiliary lift car and the main lift car have a traction distance, the auxiliary control wheel brakes, and then the auxiliary traction machine drives the main lift car and the auxiliary lift car to jointly move together and keep a fixed distance, and the position of the auxiliary lift car is changed in the vertical direction to realize the joint movement under the failure of the main traction machine; the main traction machine combined driving method is adopted, the safe driving under the fault of the auxiliary traction machine can be realized, namely when the auxiliary traction machine is in fault, the auxiliary traction machine loses power, the auxiliary control wheel releases a brake, the main traction machine drives and controls the main traction rope to drive the main car to move, when the auxiliary car and the main car have a traction distance, the auxiliary control wheel brakes, then the main traction machine drives the main car and the auxiliary car to jointly move together, the fixed distance is kept, the position movement is changed in the vertical direction, and the safe driving under the fault of the auxiliary traction machine is realized.
Drawings
Fig. 1 is a 1:1 drive schematic diagram of a combined and independent hybrid drive double car elevator in the first embodiment;
FIGS. 2a-2e are schematic diagrams of independent driving methods for the respective movements of the main and auxiliary double cars according to the first embodiment;
3a-3e are schematic diagrams of independent driving methods of the first embodiment, wherein the main car moves and the auxiliary car is static;
4a-4e are schematic diagrams of a main traction machine combined driving method in the first embodiment;
5a-5e are schematic diagrams of the auxiliary traction machine combined driving method in the first embodiment;
fig. 6a to 6e are schematic diagrams of a synchronous combined driving method of a main traction machine and an auxiliary traction machine in the first embodiment;
fig. 7 is a 2:1 drive schematic of a combined and independent hybrid drive dual car elevator of the second embodiment;
fig. 8 is a 2:1 drive schematic diagram of a combined and independent hybrid drive double car elevator in the third embodiment;
wherein: 1-main hoisting rope, 2-auxiliary upper guide pulley, 3-auxiliary hoisting rope, 4-main car, 5-auxiliary control pulley, 6-auxiliary lower guide pulley group, 7-auxiliary car, 8-balance rope guide pulley group, 9-main balance rope guide pulley, 10-auxiliary balance rope guide pulley, 11-main balance rope, 12-auxiliary balance rope, 13-main counterweight, 14-auxiliary counterweight, 15-auxiliary traction machine, 16-main guide pulley, 17-main traction machine, 18-main car diversion sheave, 19-main counterweight diversion sheave, 20-auxiliary car diversion sheave, 21-auxiliary counterweight diversion sheave.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Example one
As shown in fig. 1 to 6, the combined and independent hybrid driving double-car elevator comprises a main elevator system including a main car 4 and a main traction machine 17, a double-car elevator further comprising an auxiliary elevator system capable of moving with the main elevator system, independently moving with respect to the main elevator system, and driving the main car 4 to move, and a balance rope guide pulley set 88 disposed below the auxiliary elevator system, the auxiliary elevator system comprising an auxiliary car disposed below the main car 4, an auxiliary control sheave 5 set installed below the main car 4, an auxiliary traction rope 3 connected to the auxiliary car and wound around the auxiliary control sheave 5 set, and an auxiliary traction machine 15, wherein the auxiliary traction machine 15 has three operating states of driving, braking, and free rotation, the auxiliary control sheave 5 set has two states of releasing braking and braking, and when the auxiliary control sheave 5 set brakes, the main car 4 and the auxiliary car are driven by the main traction machine 17 alone to move synchronously or the auxiliary traction machine 15 alone to move synchronously or the main traction machine 17 alone and the auxiliary traction machine 15 respectively 17 and the auxiliary traction machine 15 are driven to act synchronously independently, and when the auxiliary control wheel 5 set releases braking, the main cage 4 and the auxiliary cage are driven independently by the main traction machine 17 and the auxiliary traction machine 15 respectively.
When the drive ratio of the double-car elevator is 1:1, the main lifting system further comprises a main guide pulley 16, a main counterweight 13, a main balance rope 11 and a main traction rope 1 which is connected between the main car 4 and the main counterweight 13 and bypasses a main traction machine 17 and the main guide pulley 16; the auxiliary lifting system comprises an auxiliary counterweight 14, an auxiliary upper guide wheel 2 positioned in the shaft and above the main car 4, an auxiliary balance rope 12 guide wheel 10 positioned in the shaft and below the auxiliary traction machine 15, and an auxiliary balance rope 12, wherein at least two auxiliary control wheel groups 5 are symmetrically arranged below the main car 4; the balance rope guide wheel group 88 is provided with two balance wheels which are respectively used for winding a main balance rope 1 and an auxiliary balance rope 12, the two balance wheels can rotate relatively independently, one end of the main balance rope 1 is fixedly connected with the lower end of a main counterweight 13, the other end of the main balance rope 1 is fixedly connected with the bottom of an auxiliary car 7 after bypassing the guide wheel 99 of the main balance rope 1 and one of the balance wheels, one end of the auxiliary balance rope 12 is fixedly connected with the lower end of the auxiliary counterweight, and the other end of the auxiliary balance rope 12 is fixedly connected with the bottom of the auxiliary car 7 after bypassing the guide wheel 10 of the auxiliary balance rope 12 and one of the balance wheels. The auxiliary upper guide wheels 2 and the auxiliary hoisting machines 15 are respectively positioned on both sides above the main car 4. Each auxiliary control wheel 5 group is provided with an auxiliary control wheel 5 and an auxiliary lower guide wheel group 6 in sequence from the middle to the outer side, the auxiliary control wheels 5 have two states of releasing brake and braking, the auxiliary traction ropes 3 respectively correspond to one auxiliary control wheel 5 group, respectively extend upwards from the top of the auxiliary car 7 to bypass the auxiliary control wheels 5 respectively corresponding to the auxiliary control wheels, then extend downwards to bypass the auxiliary lower guide wheel groups 6 respectively corresponding to the auxiliary control wheels, then extend upwards to the auxiliary upper guide wheels 2, then bypass the auxiliary traction machines 15 and then are fixedly connected with the auxiliary counterweights 14, and the other auxiliary traction machines extend upwards to directly bypass the auxiliary traction machines 15 and then are fixedly connected with the auxiliary counterweights 14. Each auxiliary lower guide wheel set 6 comprises two auxiliary lower guide wheels, and the two auxiliary lower guide wheels positioned on the outermost side in the two auxiliary lower guide wheel sets 6 are respectively positioned below the auxiliary upper guide wheel 2 and the auxiliary traction machine 15.
The invention is described in detail below with reference to embodiments shown in the drawings to which:
fig. 1 presents schematically an advantageous embodiment of the combined and independent hybrid drive double-car elevator of the invention.
The main car 4 and the auxiliary car 7 are arranged in the vertical direction. The main hoisting rope 1 is connected to the main counterweight 13 after being connected to the top of the main car 4 by bypassing the main hoisting machine 17 and the main guide sheave 16.
An auxiliary lower guide wheel set 6 and an auxiliary control wheel 5 are fixedly arranged at the bottom of the main car 4, wherein the auxiliary lower guide wheel set 6 is provided with two guide wheels at the left side and the right side of the main car 4 respectively, and the guide wheels are distributed symmetrically left and right relative to the main car 4. The auxiliary control wheels 5 are two and are distributed symmetrically left and right relative to the main cage 4.
The auxiliary hoisting ropes 3 are symmetrically distributed on the left side and the right side of the auxiliary car 7 respectively, one auxiliary hoisting rope 3 is connected with the auxiliary car 7, then bypasses the auxiliary control wheel 5 on the left side of the main car 4 from bottom to top, bypasses two guide wheels in the auxiliary lower guide wheel group 6 on the left side of the main car 4 from top to bottom, is pulled upwards, bypasses the auxiliary upper guide wheels 2 which are arranged on the same left and right positions of the guide wheels on the leftmost side of the main car 4 with the auxiliary lower guide wheel group 6, bypasses the auxiliary tractor 15 and is connected with the auxiliary counterweight 14. The other auxiliary traction rope 3 is connected with an auxiliary car 7, then bypasses the auxiliary control wheel 5 on the right side of the main car 4 from bottom to top, bypasses two guide wheels in the auxiliary lower guide wheel set 6 on the right side of the main car 4 from top to bottom, is pulled upwards, and is connected with an auxiliary counterweight 14 after bypassing an auxiliary traction machine 15 which is arranged at the same left and right positions of the guide wheel on the rightmost side of the main car 4 with the auxiliary lower guide wheel set 6. So that the auxiliary hoist rope 3 between the auxiliary lower guide sheave 6 and the auxiliary upper guide sheave 2 is in a vertical state and the auxiliary hoist rope 3 between the auxiliary lower guide sheave 6 and the auxiliary hoist 15 is in a vertical state.
A main balance rope guide wheel 9 is arranged right below the main guide wheel 16, an auxiliary balance rope guide wheel 10 is arranged right below the auxiliary traction machine 15, and a balance rope guide wheel group 8 is arranged right below the auxiliary car 7. The main balance rope 1 connected to the main counterweight 13 is connected to the bottom of the main car 4 after passing around the main balance rope guide pulley 9 and the balance rope guide pulley group 8 in this order. The auxiliary balance rope 12 connected to the auxiliary counterweight 14 is connected to the bottom of the main car 4 after sequentially passing around the auxiliary balance rope guide pulley 10 and the balance rope guide pulley group 8.
Of all the guide wheels, only the auxiliary lower guide wheel set 6 and the auxiliary control wheel 5 are installed at the bottom of the main car 4 which can move vertically relative to the shaft, and the other guide wheels, the main traction machine 17 and the auxiliary traction machine 15 in the elevator device are fixed in position relative to the shaft.
The auxiliary traction machine 15 has three states of driving, braking and no driving and no braking. The auxiliary control wheel 5 has two states of releasing the brake and applying the brake.
The combined and independent hybrid drive double-car elevator of the invention has the main car 4 independently controlled by the main tractor 17, changes the working states of the auxiliary tractor 15, the auxiliary control wheel 5 and the main tractor 17, and corresponds to the following driving method of the double-car elevator:
in fig. 2, the main traction machine 17 drives and controls the main cage 4 to move; the auxiliary control wheel 5 releases a brake and is converted into a guide wheel, the auxiliary traction machine 15 drives and controls the auxiliary car 7 to move, the auxiliary car 7 is independently controlled by the auxiliary traction machine 15, the positions of the two cars in the vertical direction move and change independently, and the independent driving of the respective movement of the two cars is realized;
in fig. 3, the main traction machine 17 drives and controls the main cage 4 to move; the auxiliary control wheel 5 releases a brake to be converted into a guide wheel, the auxiliary traction machine 15 brakes and controls the auxiliary car 7 to be static, and the position of the main car 4 in the vertical direction independently runs and changes, so that the independent driving of the movement of the main car 4 and the static of the auxiliary car 7 is realized;
in fig. 4, the main tractor 17 drives and controls the main car 4 to move, the auxiliary control wheel 5 applies a brake, the auxiliary tractor 15 releases driving and braking, the length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 is kept unchanged, the movement of the two cars in the vertical direction drives and controls the main car 4 to move through the main tractor 17, the main car 4 drives the auxiliary car 7 to jointly move together, a fixed distance is kept, and the movement of the position in the vertical direction is changed, namely the joint driving of the main tractor 17 is realized;
according to the main tractor 17 combined driving method, safe driving under the fault of the auxiliary tractor 15 can be realized, namely when the auxiliary tractor 15 is in fault, the auxiliary tractor 15 loses power, the auxiliary control wheel 5 releases a brake, the main tractor 17 drives and controls the main traction rope 1 to drive the main car 4 to move, when the auxiliary car 7 and the main car 4 have a traction distance, the auxiliary control wheel 5 brakes, then the main tractor 17 drives the main car 4 and the auxiliary car 7 to jointly move together, the fixed distance is kept, the movement change of the position is carried out in the vertical direction, and the combined movement under the fault of the auxiliary tractor 15 is realized.
In fig. 5, the auxiliary traction machine 15 drives and controls the auxiliary car 7 to move, the auxiliary control wheel 5 applies a brake, the main traction machine 17 releases driving and braking, the length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 is kept unchanged, the auxiliary traction rope 3 is driven and controlled by the auxiliary traction machine 15 through the movement of the two cars in the vertical direction, the auxiliary traction rope 3 is braked by the auxiliary control wheel 5 to drive the main car 4 and the auxiliary car 7 to jointly move and keep a fixed distance, and the movement change of the position is carried out in the vertical direction, namely the joint driving of the auxiliary traction machine 15 is realized;
the auxiliary traction machine 15 combined driving method can realize safe driving under the failure of the main traction machine 17, namely when the main traction machine 17 fails, the main traction machine 17 loses power, the auxiliary control wheel 5 releases a brake, the auxiliary traction machine 15 drives and controls the auxiliary traction rope 3 to drive the auxiliary car 7 to move, when the auxiliary car 7 and the main car 4 have a traction distance, the auxiliary control wheel 5 brakes, then the auxiliary traction machine 15 drives the main car 4 and the auxiliary car 7 to jointly move together, the fixed distance is kept, the position movement change is carried out in the vertical direction, and the joint movement under the failure of the main traction machine 17 is realized
In fig. 6, the auxiliary traction machine 15 drives and controls the auxiliary car 7 to move, the auxiliary control wheel 5 applies a brake, the main traction machine 17 drives and controls the auxiliary car 7 to move, the length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 is kept unchanged, the two traction machines synchronously drive the main car 4 and the auxiliary car 7 to jointly move together, a fixed distance is kept, and position movement change is carried out in the vertical direction, namely, synchronous joint driving of the main traction machine 17 and the auxiliary traction machine 15 is realized.
Example two
As shown in fig. 7, the fixing positions of the main hoisting ropes 1 and the main auxiliary hoisting ropes 3 are on the same side as the main counterweight and the auxiliary counterweight above the main car 4.
When the driving ratio of the elevator is 2:1, the main lifting system further comprises a main car diversion sheave 18, a main guide sheave 16, a main counterweight 13, a main counterweight diversion sheave 19, a main balance rope 1 and a main hoisting rope 1, wherein the main car diversion sheave 18, the main guide sheave 16, the main counterweight 13, the main counterweight diversion sheave 19, the main balance rope 1 and the main hoisting rope 1 are arranged above the main car 4, one end of the main hoisting rope 1 is fixed in the hoistway and is positioned above the highest point of the traveling path of the main counterweight 13, the other end of the main hoisting rope 1 downwards bypasses the main counterweight diversion sheave 19, upwards bypasses the main guide sheave 16, upwards bypasses the main hoisting machine 17 from above, downwards bypasses the main car diversion sheave 18, and finally upwards extends and is fixed in the hoistway and is positioned above; the auxiliary lifting system comprises an auxiliary counterweight 14, an auxiliary upper guide pulley 2 positioned in the shaft and above the main car 4, an auxiliary balance rope 12 guide pulley 10 positioned in the shaft and below an auxiliary traction machine 15, an auxiliary balance rope 12 and an auxiliary counterweight diversion sheave 21 arranged on the top of the auxiliary car 7, at least two auxiliary control wheel sets 5 are symmetrically arranged below the main car 4, one end of an auxiliary traction rope 3 is fixed in the shaft and above the highest point of the travelling path of the auxiliary counterweight, the other end of the auxiliary counterweight pulley passes through the auxiliary counterweight pulley 21 downwards, passes through the auxiliary traction machine 15 upwards, passes through the auxiliary upper guide wheel 2 from the upper part, passes through one auxiliary control wheel 5 group downwards, passes through the auxiliary car pulley 20 downwards, passes through the other symmetrical auxiliary control wheel 5 group upwards, extends upwards and is fixed in the shaft and positioned above the highest point of the traveling path of the main car 4; the balanced rope direction wheelset 8 has two stabilizer wheels that are used for respectively around establishing main balanced rope 1 and assisting balanced rope 12, two stabilizer wheels can rotate independently relatively, main balanced rope 1 one end and main to heavy 13 lower extreme fixed connection, the other end is walked around behind main balanced rope 1 leading wheel 9 and one of them stabilizer wheel and is assisted the bottom fixed connection of car 7, assist balanced rope 12 one end and assist heavy lower extreme fixed connection, the other end is walked around behind assisting balanced rope 12 leading wheel 10 and one of them stabilizer wheel and is assisted the bottom fixed connection of car 7.
Each auxiliary control wheel 5 group is sequentially provided with an auxiliary control wheel 5 and an auxiliary lower guide wheel group 6 from the middle to the outer side, the auxiliary control wheel 5 has two states of releasing braking and braking, one end of an auxiliary traction rope 3 is fixed in the shaft and positioned above the highest point of the auxiliary counterweight advancing path, the other end of the auxiliary traction rope downwards bypasses the auxiliary counterweight diversion wheel, upwards bypasses an auxiliary traction machine 15, bypasses the auxiliary upper guide wheel 2 from the upper part, downwards bypasses one auxiliary lower guide wheel group 6, upwards bypasses the auxiliary control wheel 5, downwards bypasses the auxiliary car diversion wheel 20, upwards bypasses the other symmetrical auxiliary control wheel 5, downwards bypasses the other symmetrical auxiliary lower guide wheel group 6, upwards extends and is fixed in the shaft and positioned above the highest point of the main car 4 advancing path.
EXAMPLE III
As shown in fig. 8, the fixing positions of the main hoisting ropes 1 and the main auxiliary hoisting ropes 3 and the main counterweight and the auxiliary counterweight are on both sides above the main car 4.
When the driving ratio of the elevator is 2:1, the main lifting system further comprises a main car diversion sheave 18, a main guide sheave 16, a main counterweight 13, a main counterweight diversion sheave 19, a main balance rope 1 and a main hoisting rope 1, wherein the main car diversion sheave 18, the main guide sheave 16, the main counterweight 13, the main counterweight diversion sheave 19, the main balance rope 1 and the main hoisting rope 1 are arranged above the main car 4, one end of the main hoisting rope 1 is fixed in the hoistway and is positioned above the highest point of the traveling path of the main counterweight 13, the other end of the main hoisting rope 1 downwards bypasses the main counterweight diversion sheave 19, upwards bypasses the main guide sheave 16, upwards bypasses the main hoisting machine 17 from above, downwards bypasses the main car diversion sheave 18, and finally upwards extends and is fixed in the hoistway and is positioned above; the auxiliary lifting system comprises an auxiliary counterweight 14, auxiliary balance rope 12 guide wheels 10 positioned in the shaft and below an auxiliary traction machine 15, an auxiliary balance rope 12 and auxiliary counterweight diversion wheels 21 arranged on the top of the auxiliary car 7, at least two auxiliary control wheel 5 groups are symmetrically arranged below the main car 4, one end of an auxiliary traction rope 3 is fixed in the shaft and above the highest point of the auxiliary counterweight advancing path, the other end of the auxiliary traction rope bypasses the auxiliary counterweight diversion wheels 21 downwards, then bypasses the auxiliary traction machine 15 upwards, then bypasses one auxiliary control wheel 5 group downwards, then bypasses the auxiliary car diversion wheels 20 downwards, then bypasses the other symmetrical auxiliary control wheel 5 group upwards, extends upwards and is fixed in the shaft and above the highest point of the main car 4 advancing path; the balanced rope direction wheelset 8 has two stabilizer wheels that are used for respectively around establishing main balanced rope 1 and assisting balanced rope 12, two stabilizer wheels can rotate independently relatively, main balanced rope 1 one end and main to heavy 13 lower extreme fixed connection, the other end is walked around behind main balanced rope 1 leading wheel 9 and one of them stabilizer wheel and is assisted the bottom fixed connection of car 7, assist balanced rope 12 one end and assist heavy lower extreme fixed connection, the other end is walked around behind assisting balanced rope 12 leading wheel 10 and one of them stabilizer wheel and is assisted the bottom fixed connection of car 7.
Each auxiliary control wheel 5 group is sequentially provided with an auxiliary control wheel 5 and an auxiliary lower guide wheel group 6 from the middle to the outer side, the auxiliary control wheel 5 has two states of releasing braking and braking, one end of an auxiliary traction rope 3 is fixed in the shaft and positioned above the highest point of the auxiliary counterweight advancing path, the other end of the auxiliary traction rope downwards bypasses the auxiliary counterweight diversion wheel, upwards bypasses an auxiliary traction machine 15, bypasses the auxiliary upper guide wheel 2 from the upper part, downwards bypasses one auxiliary lower guide wheel group 6, upwards bypasses the auxiliary control wheel 5, downwards bypasses the auxiliary car diversion wheel 20, upwards bypasses the other symmetrical auxiliary control wheel 5, downwards bypasses the other symmetrical auxiliary lower guide wheel group 6, upwards extends and is fixed in the shaft and positioned above the highest point of the main car 4 advancing path.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (11)
1. A combined and independent hybrid drive double-car elevator is characterized in that: it includes main operating system, main operating system includes main car and main hauler, two car elevators still including can be along with main operating system motion, also can for main operating system independent motion and can drive the vice operating system of main car motion to and locate the balanced rope direction wheelset of vice operating system below, vice operating system is including locating vice car of main car below, install in the auxiliary control wheelset of main car below, with vice car be connected and around in auxiliary control is hauled rope, auxiliary hauler on the wheelset, auxiliary hauler has drive, braking and three kinds of operating condition of free rotation, auxiliary control wheelset has two kinds of states of release braking and braking, works as when auxiliary control braking wheelset, main car with vice car is by main hauler independent drive synchronous motion or by auxiliary hauler independent drive synchronous motion or by main hauler and auxiliary hauler independent drive synchronous motion respectively When the auxiliary control wheel set releases the brake, the main car and the auxiliary car are independently driven by the main tractor and the auxiliary tractor respectively.
2. The combined and independent hybrid drive twin car elevator according to claim 1, wherein: when the drive ratio of the double-car elevator is 1:1,
the main lifting system also comprises a main guide wheel, a main counterweight, a main balance rope and a main traction rope which is connected between the main lift car and the main counterweight and bypasses the main traction machine and the main guide wheel;
the auxiliary lifting system comprises an auxiliary counterweight, an auxiliary upper guide wheel, an auxiliary balance rope guide wheel and an auxiliary balance rope, wherein the auxiliary upper guide wheel is positioned in a well and above the main car;
balance rope leading wheel group has two and is used for respectively winding and establishes main balance rope with assist the stabilizer wheel of balance rope, two the stabilizer wheel can rotate relatively independently, main balance rope one end and main heavy lower extreme fixed connection, the other end walk around main balance rope leading wheel and one of them stabilizer wheel after with assist the bottom fixed connection of car, assist balance rope one end and assist heavy lower extreme fixed connection, the other end walk around assist behind balance rope leading wheel and one of them stabilizer wheel with assist the bottom fixed connection of car.
3. The combined and independent hybrid drive twin car elevator according to claim 2, wherein: the auxiliary upper guide wheel and the auxiliary traction machine are respectively positioned on two sides above the main car.
4. The combined and independent hybrid drive twin car elevator according to claim 2, wherein: each group of the auxiliary control wheel set is sequentially provided with an auxiliary control wheel and an auxiliary lower guide wheel set from the middle to the outer side, the auxiliary control wheel has two states of releasing brake and braking, the auxiliary hoisting ropes correspond to the auxiliary control wheel sets respectively and extend upwards from the top of the auxiliary car respectively to bypass the auxiliary control wheels which correspond to the auxiliary hoisting ropes respectively, then extend downwards to bypass the auxiliary lower guide wheel sets which correspond to the auxiliary hoisting ropes respectively, then one of the auxiliary hoisting ropes extends upwards to the auxiliary upper guide wheels and then bypasses the auxiliary hoisting machines to be fixedly connected with the auxiliary counterweight, and the other auxiliary hoisting machine extends upwards to directly bypass the auxiliary hoisting machines to be fixedly connected with the auxiliary counterweight.
5. The combined and independent hybrid drive twin car elevator according to claim 4, wherein: each auxiliary lower guide wheel set comprises two auxiliary lower guide wheels, and the two auxiliary lower guide wheels on the outermost side in the two auxiliary lower guide wheel sets are respectively positioned below the auxiliary upper guide wheels and the auxiliary traction machine.
6. The combined and independent hybrid drive twin car elevator according to claim 1, wherein:
when the drive ratio of the elevator is 2:1,
the main lifting system also comprises a main car diversion sheave, a main guide pulley, a main counterweight diversion sheave, a main balance rope and a main hoisting rope, wherein the main car diversion sheave, the main guide pulley, the main counterweight diversion sheave, the main balance rope and the main hoisting rope are arranged above the main car, one end of the main hoisting rope is fixed in the hoistway and positioned above the highest point of the advancing path of the main counterweight, the other end of the main hoisting rope downwards bypasses the main counterweight diversion sheave, upwards bypasses the main guide pulley, upwards bypasses the main hoisting machine from above, downwards bypasses the main car diversion sheave, and finally upwards extends and is fixed in the hoistway and positioned above the highest point of the advancing path of the main car;
the auxiliary lifting system comprises an auxiliary counterweight, an auxiliary upper guide wheel positioned in the shaft and above the main car, an auxiliary balance rope guide wheel positioned in the shaft and below the auxiliary traction machine, an auxiliary balance rope and an auxiliary counterweight diversion sheave arranged on the top of the auxiliary car, at least two auxiliary control sheave groups are symmetrically arranged below the main car, one end of the auxiliary traction rope is fixed in the shaft and above the highest point of the auxiliary counterweight advancing path, the other end of the auxiliary counterweight pulley is downward wound around the auxiliary counterweight pulley, upward wound around the auxiliary traction machine, upward wound around the auxiliary upper guide wheel, downward wound around one of the auxiliary control wheel groups, downward wound around the auxiliary car pulley, upward wound around the other symmetrical auxiliary control wheel group, upward extended and fixed in the hoistway and positioned above the highest point of the main car traveling path;
balance rope leading wheel group has two and is used for respectively winding and establishes main balance rope with assist the stabilizer wheel of balance rope, two the stabilizer wheel can rotate relatively independently, main balance rope one end and main heavy lower extreme fixed connection, the other end walk around main balance rope leading wheel and one of them stabilizer wheel after with assist the bottom fixed connection of car, assist balance rope one end and assist heavy lower extreme fixed connection, the other end walk around assist behind balance rope leading wheel and one of them stabilizer wheel with assist the bottom fixed connection of car.
7. The combined and independent hybrid drive twin car elevator according to claim 6, wherein: every group the supplementary control wheelset is equipped with supplementary control wheel, assists the lower guide pulley group to the outside position in proper order by the centre, assists the control wheel and has release braking and two kinds of states of braking, assist towline one end be fixed in the well and be located assist in to heavily advancing the peak top in route, its another tip is walked around downwards assist in heavily diverting pulley, upwards walk around again and assist the hauler again and walk around from the top assist in the leading wheel, again walk around one of them downwards assist down behind the guide wheelset, upwards walk around supplementary control wheel, again walk around downwards and assist car diverting pulley, again upwards walk around another of symmetry behind the supplementary control wheel, downwards walk around another of symmetry behind the supplementary lower guide wheelset, upwards extend and be fixed in the well and be located the peak top of main car route of advancing.
8. A driving method of a combined and independent hybrid driving double-car elevator based on any one of the above, characterized by comprising the steps of: the auxiliary control wheel releases the brake to become a guide wheel, then the main traction machine controls the main car to move or stop, the auxiliary traction machine controls the auxiliary car to move or stop, the auxiliary car is independently controlled by the auxiliary traction machine, and at the moment, the main car and the auxiliary car run in a mutually independent driving mode.
9. A driving method of a combined and independent hybrid driving double-car elevator based on any one of the above, characterized by comprising the steps of: the auxiliary control wheel applies a brake and the auxiliary traction machine releases driving and braking, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, then the main traction machine drives and controls the main car to move, the main car and the auxiliary car move in the vertical direction through the driving of the main traction machine, and the main car drives the auxiliary car to jointly move together and keep a fixed distance.
10. A driving method of a combined and independent hybrid driving double-car elevator based on any one of the above, characterized by comprising the steps of: the auxiliary control wheel applies a brake, the main traction machine releases driving and braking, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, the auxiliary traction machine drives and controls the auxiliary car to move, the main car and the auxiliary car move in the vertical direction through the auxiliary traction machine, the auxiliary traction rope is braked by the auxiliary control wheel to drive the main car to jointly move along with the auxiliary car, and a fixed distance is kept.
11. A driving method of a combined and independent hybrid driving double-car elevator based on any one of the above, characterized by comprising the steps of: the auxiliary control wheel applies a brake, the auxiliary traction machine drives the auxiliary car to move and the main traction machine drives the main car to move, the length of an auxiliary traction rope between the auxiliary car and the auxiliary control wheel is kept unchanged, the two traction machines synchronously drive the main car and the auxiliary car to jointly move, a fixed distance is kept, and the position of the two traction machines is changed in the vertical direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010132968.5A CN111153309A (en) | 2020-02-29 | 2020-02-29 | Combined and independent hybrid drive double-car elevator and driving method thereof |
| PCT/CN2020/106087 WO2021169176A1 (en) | 2020-02-29 | 2020-07-31 | Jointly- and independently-driven hybrid dual cab elevator and driving method therefor |
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| CN202010132968.5A CN111153309A (en) | 2020-02-29 | 2020-02-29 | Combined and independent hybrid drive double-car elevator and driving method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112249847A (en) * | 2020-07-15 | 2021-01-22 | 德普家用电梯（上海）有限公司 | Weight balance system of home elevator |
| WO2021169176A1 (en) * | 2020-02-29 | 2021-09-02 | 东南电梯股份有限公司 | Jointly- and independently-driven hybrid dual cab elevator and driving method therefor |
| CN115465737A (en) * | 2022-09-16 | 2022-12-13 | 广州广日电梯工业有限公司 | Parallel double-car elevator system and control method |
| CN116750617A (en) * | 2023-07-18 | 2023-09-15 | 特码斯派克工业技术(安徽)有限公司 | Quick rope changing mechanism and method for vertical shaft friction type elevator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455438A (en) * | 2021-12-31 | 2022-05-10 | 联想新视界(江苏)设备服务有限公司 | Elevator driven by double traction wheels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2923204B2 (en) * | 1994-06-28 | 1999-07-26 | 戸田建設株式会社 | Elevator |
| JPH08133630A (en) * | 1994-11-02 | 1996-05-28 | Mitsubishi Electric Corp | Linear motor elevator operating method and linear motor elevator device |
| JP2000318954A (en) * | 1999-05-10 | 2000-11-21 | Toshiba Corp | Variable type double deck elevator |
| CN103373658A (en) * | 2012-04-20 | 2013-10-30 | 殷子渊 | Detachable double-deck elevator |
| CN105819305B (en) * | 2016-05-06 | 2018-11-09 | 广东铃木电梯有限公司 | A kind of elevator balanced heavy compensation transmission device of Shuangzi |
| CN111153309A (en) * | 2020-02-29 | 2020-05-15 | 东南电梯股份有限公司 | Combined and independent hybrid drive double-car elevator and driving method thereof |
-
2020
- 2020-02-29 CN CN202010132968.5A patent/CN111153309A/en active Pending
- 2020-07-31 WO PCT/CN2020/106087 patent/WO2021169176A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169176A1 (en) * | 2020-02-29 | 2021-09-02 | 东南电梯股份有限公司 | Jointly- and independently-driven hybrid dual cab elevator and driving method therefor |
| CN112249847A (en) * | 2020-07-15 | 2021-01-22 | 德普家用电梯（上海）有限公司 | Weight balance system of home elevator |
| CN115465737A (en) * | 2022-09-16 | 2022-12-13 | 广州广日电梯工业有限公司 | Parallel double-car elevator system and control method |
| CN115465737B (en) * | 2022-09-16 | 2023-12-19 | 广州广日电梯工业有限公司 | Parallel double-car elevator system and control method |
| CN116750617A (en) * | 2023-07-18 | 2023-09-15 | 特码斯派克工业技术(安徽)有限公司 | Quick rope changing mechanism and method for vertical shaft friction type elevator |
| CN116750617B (en) * | 2023-07-18 | 2024-01-02 | 特码斯派克工业技术(安徽)有限公司 | Quick rope changing mechanism and method for vertical shaft friction type elevator |
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| WO2021169176A1 (en) | 2021-09-02 |
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