CN110902523B - Elevator traction system - Google Patents
Elevator traction system Download PDFInfo
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- CN110902523B CN110902523B CN201911343085.2A CN201911343085A CN110902523B CN 110902523 B CN110902523 B CN 110902523B CN 201911343085 A CN201911343085 A CN 201911343085A CN 110902523 B CN110902523 B CN 110902523B
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- car
- counterweight
- traction
- rope
- driving
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Classifications
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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
- 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
-
- 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
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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)
Abstract
The application discloses an elevator traction system which comprises two cabins sequentially arranged in the same shaft in the height direction, two driving devices arranged at the top of the shaft and positioned on the same side of the cabins in the vertical projection position, a balance weight positioned in the shaft and positioned below the two driving devices, and a set of traction ropes, wherein two ends of each traction rope are directly or indirectly connected to the shaft through corresponding rope head devices, and one traction rope sequentially passes through one of the cabins, one of the driving devices, the balance weight, the other driving device and the other cabin from one end to the other end of the traction rope. The application provides an elevator traction system, which has balanced stress of a balance weight, stable operation and cost and well space saving.
Description
Technical Field
The application relates to the technical field of elevators, in particular to an elevator traction system.
Background
In order to effectively improve the elevator operation efficiency of a high-rise building, there have been various elevator systems in which two or more cars are installed in the same hoistway, and the two or more cars can be independently operated up and down in order to more effectively utilize the building space and improve the transportation capacity of the elevator system. The core of the mechanical part for realizing the elevator system is how to reasonably and optimally design and arrange the components of a traction system (hereinafter referred to as a traction system) such as a balance weight, a driving device, a suspension rope, a guide rope wheel and the like which are pulled by each car, and the traction system of the elevator can be kept safe, reliable and stable in the running process after ensuring that the space of a well is optimally utilized.
As disclosed in chinese patent document CN1226176C, an elevator apparatus improves the utilization rate of the elevator hoistway space and reduces the cost of the elevator by sharing the balance weight, but the solution of the patent still has the following problems:
(1) The traction suspension rope of the lower car is divided into two parts, and the two parts are respectively fixed on two sides of the car, so that the problem of uneven wear of ropes on two sides easily occurs if the ropes are unevenly tensioned or the car is unbalanced in the installation process.
(2) The two cabs share a balance weight, the two cabs adopt a traction ratio of 1:1, the balance weight adopts a traction ratio of 2:1, the scheme leads to the balance weight device to be provided with a reverse rope wheel, the suspension ropes separated at the lower cabin side can be combined together along with the two cabs in the ascending process of a well, then the two cabs jointly bypass the reverse rope wheel arranged on the balance device, and the ropes with uneven wear easily generate jump grooves when bypassing the reverse rope wheel.
(3) The two cabs adopt a traction ratio of 1:1, compared with the 2:1 configuration of the conventional elevator, the torque of the driving device is doubled, the size is larger, the cost is increased, and the requirement on the machine room space is also greatly increased.
(4) The arrangement of the driving device and the corresponding guide rope wheels in the machine room is too complex, so that the cost and the design difficulty of the corresponding bearing support structure are greatly increased, and meanwhile, the complex bearing support structure necessarily causes great limitation of the operation and maintenance space of equipment in the machine room.
Disclosure of Invention
In order to solve at least one technical problem in the prior art, the application provides an elevator traction system, wherein a balance weight is balanced in stress and stable in operation, and the cost and the hoistway space are saved.
The application provides an elevator traction system, comprising:
two cabs arranged in the same well in sequence along the height direction;
Two driving devices installed at the top of the well and located at the same side of the car at the vertical projection position;
Balance weights positioned in the well or the machine room and below the two driving devices;
and the two ends of the traction rope are directly or indirectly connected to the well through corresponding rope head devices, and the traction rope sequentially winds one lift car, one driving device, a balance weight, the other driving device and the other lift car from one end to the other end of the traction rope.
The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.
Optionally, each car is suspended at a traction ratio of 2:1, and the balance weight is suspended at a traction ratio of 4:1.
Optionally, the elevator traction system further comprises two oppositely arranged car guide rails, wherein one car guide rail is positioned at one side of the car facing the two driving devices, the other car guide rail is positioned at one side of the car facing away from the two driving devices, the two car guide rails define a first vertical surface, and two oppositely arranged counterweight guide rails are respectively positioned at two sides of the first vertical surface, and the two counterweight guide rails define a second vertical surface perpendicular to the first vertical surface.
Optionally, two first counterweight steering wheels are arranged at the top of the counterweight, the two first counterweight steering wheels are respectively positioned at two sides of the first vertical surface, a second counterweight steering wheel is arranged at the top of the hoistway, the vertical projection position of the second counterweight steering wheel is positioned between the two first counterweight steering wheels, and the traction rope sequentially winds one of the first counterweight steering wheels, the second counterweight steering wheel, the other first counterweight steering wheel and the other driving device from one driving device.
Optionally, the two first weight steering wheels are symmetrically arranged at two sides of the first vertical surface, the axes of the second weight steering wheels are positioned on the first vertical surface, and the axes of all weight steering wheels are parallel to each other and perpendicular to the driving axis line.
Optionally, all counterweight steering wheels are located between the two drive devices in a horizontal direction in the second vertical plane.
Optionally, the two driving devices have the same driving shaft axis, the driving shaft axis is perpendicular to the first vertical surface, and the driving shaft axis is located between the second vertical surface and the car along the horizontal direction in the first vertical surface.
Optionally, the two driving devices are symmetrically arranged at two sides of the first vertical surface.
Optionally, the two cabs are an upper cabin and a lower cabin respectively;
The connection mode of the traction rope and the upper car is as follows:
One or two car top wheels are arranged at the top of the upper car, and the traction rope extends upwards to a corresponding rope end device and a driving device after passing through each car top wheel respectively, or
The bottom of the upper car is provided with two car bottom wheels, and the traction rope upwards extends to a corresponding rope end device and a driving device after passing through each car bottom wheel;
The connection mode of the traction rope and the lower car is as follows:
The top of the lower car is provided with two car top wheels, and the traction rope is wound around each car top wheel and then extends upwards to a corresponding rope end device and a driving device respectively, or
The bottom of the lower car is provided with two car bottom wheels, and the traction ropes respectively extend upwards to corresponding rope end devices and driving devices after passing through the car bottom wheels.
Optionally, the traction ropes are wound above each car to form U-shaped sections, the U-shaped sections corresponding to the two cars respectively determine a third vertical surface and a fourth vertical surface, the third vertical surface and the fourth vertical surface are obliquely crossed with the first vertical surface, and the vertical projection is cross-shaped.
Optionally, the elevator traction system further comprises a support frame, and the two driving devices, the second counterweight steering wheel and the rope hitch devices are respectively installed on the support frame.
The elevator traction system has at least one of the following technical effects that two cabs share one balancing device, so that the elevator traction system is convenient to install, elevator cost and hoistway space can be saved, more maintenance space is guaranteed in a machine room, two driving devices are arranged on the same horizontal plane and symmetrically distributed, the configured bearing mechanical devices are balanced in stress, traction ropes between the two driving devices and located on the balance weight sides and bypass steering wheels are symmetrically distributed, the balance weight is balanced in stress, and the operation is more stable.
Drawings
Fig. 1 is a front view of an embodiment of an elevator traction system of the present application;
fig. 2 is a left side view of an elevator traction system of fig. 1;
fig. 3 is a schematic top view of the first car of fig. 1;
Fig. 4 is a schematic top view of the second car of fig. 1;
Fig. 5 is a bottom view of an elevator traction system of fig. 1;
fig. 6 is a front view of another embodiment of an elevator traction system of the present application;
fig. 7 is a left side view of an elevator traction system of fig. 6;
fig. 8 is a schematic top view of the first car of fig. 6.
Reference numerals in the drawings are described as follows:
1. The elevator car comprises a first car, 2, a second car, 3, a hoistway, 4, a machine room, 5, a traction rope, 6, a balance weight, 7, a support frame, 8, a driving shaft core wire, 9, a symmetrical line, 10, a rope end device, 11, a car top wheel, 12, a car top wheel, 13, a second driving device, 14, a guide wheel, 15, a first counterweight steering wheel, 16, a second counterweight steering wheel, 17, a first counterweight steering wheel, 18, a first driving device, 19, a car top wheel, 20, a car top wheel, 21, a rope end device, 30, a first vertical surface, 31, a second vertical surface, 32, a center line, 33, a center line, 34, a fixing device, 35, a fixing device, 36, a counterweight guide rail, 37, a car guide rail, 38, a center line, 39, a center line, 40, a fixing device, 41, a fixing device, 51, a first balance rope, 52-56, a balance rope sheave, 61, a second plane Heng Sheng, 62-64 and a balance rope sheave.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It will be understood that 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. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 6, an embodiment of the present application provides an elevator traction system, including:
two cars arranged in the same hoistway 3 in order in the height direction;
Two driving devices installed on the top of the hoistway 3 and located on the same side of the car as the vertical projection position;
a balance weight 6 located within the hoistway 3 below the two drives;
The two ends of the traction rope 5 are directly or indirectly connected in a well or a machine room through corresponding rope head devices, and the traction rope 5 sequentially winds one lift car, one driving device, a balance weight 6, the other driving device and the other lift car from one end to the other end of the traction rope 5.
The elevator traction system in this embodiment is provided with a first car 1 and a second car 2, which are arranged in the elevator hoistway 3 in the height direction, the first car 1 being located directly below the second car 2. A counterweight 6 is disposed in the hoistway 3, the counterweight 6 is located below the two driving devices, and the first car 1, the second car 2, and the counterweight 6 are suspended in the hoistway 3 by a common hoist rope 5. One end of the hoisting rope 5 is fixed directly or indirectly to the hoistway 3 by one of the rope hitch units, then sequentially passes around one of the cars, one of the drive units, the counterweight 6, the other drive unit, the other car, and finally is fixed directly or indirectly to the hoistway 3 by the other rope hitch unit.
The two cabs share one traction rope 5 and one balance weight 6, all driving devices and all traction sheaves passing through bypass the same set of traction rope 5 to steer and suspend, the driving devices, the corresponding traction ropes 5 and the traction sheaves are simpler to arrange, the cost and the design difficulty of the corresponding bearing support structure can be reduced, and meanwhile, more operation and maintenance space in the machine room 4 can be ensured.
In another embodiment, each car is suspended at a 2:1 traction ratio and the counterweight 6 is suspended at a 4:1 traction ratio.
The first and second balance ropes 51 and 61 are suspended from the lower parts of the first and second cars 1 and 2 and the balance weight 6, and the first and second balance ropes 51 and 61 are used to balance weight changes of the hoisting ropes 5 on the sides of the first and second cars 1 and 2 and the balance weight 6 during up-and-down movement of the two cars.
One end of the first balancing rope 51 is fixed to the bottom of the first car 1 by the fixing device 40 (the center line 39 is visible in fig. 4), the first balancing rope 51 extends downward from the first car 1 bottom fixing device 40 and sequentially passes around the balancing rope sheave 52 and the balancing rope sheave 53 provided at the bottom position of the hoistway 3, then the first balancing rope 51 extends further upward and passes around the balancing rope sheave 54 provided at the lower portion of the balancing weight 6, then the first balancing rope 51 extends further downward and sequentially passes around the balancing rope sheave 55 and the balancing rope sheave 56 provided at the bottom position of the hoistway 3, and then the first balancing rope 51 extends further upward and is finally fixed to the fixing device 34 (the center line 32 is visible in fig. 3) at the bottom of the second car 2.
One end of the second counterweight 61 is fixed to the bottom of the first car 1 by a fixing device 41 (center line 38 is visible in fig. 4), the second counterweight 61 extends downward from the fixing device 41 at the bottom of the first car 1 and passes around a counterweight rope sheave 62 provided at the bottom of the hoistway 3, then the second counterweight 61 extends further upward and passes around a counterweight rope sheave 63 provided at the lower portion of the counterweight 6, then the second counterweight 61 extends further downward and passes around a counterweight rope sheave 64 provided at the bottom of the hoistway 3, and then the second counterweight 61 extends further upward and is finally fixed to a fixing device 35 (center line 33 is visible in fig. 3) at the bottom of the second car 2. Thus, the balance weight 6 is suspended at a traction ratio of 4:1.
In another embodiment, the elevator traction system further comprises:
two oppositely arranged car guide rails 37, wherein one car guide rail 37 is positioned at one side of the car facing the two driving devices, the other car guide rail 37 is positioned at one side of the car facing away from the two driving devices, and the two car guide rails 37 define a first vertical surface 30;
Two pairs of counterweight guide rails 36 disposed opposite each other and on either side of the first vertical surface 30, the counterweight guide rails 36 defining a second vertical surface 31 perpendicular to the first vertical surface 30.
The first car 1 and the second car 2 are guided by two car guide rails 37 disposed opposite to each other, and ascend and descend in the hoistway 3. The counterweight 6 is guided by two counterweight guide rails 36 disposed opposite to each other, and rises and falls in the hoistway 3.
In such an elevator traction system, the first car 1 and the second car 2 can be lifted and lowered in the shared elevator hoistway 3, the conveying capacity can be improved without enlarging the area of the hoistway 3, and the first car 1 and the second car 2 can be disposed and operated with high efficiency.
In another embodiment, two first weight steering wheels are arranged at the top of the balance weight 6 and are respectively positioned at two sides of the first vertical surface 30, a second weight steering wheel 16 is arranged at the top of the hoistway 3, the vertical projection position of the second weight steering wheel 16 is positioned between the two first weight steering wheels, and the traction rope 5 sequentially winds one first weight steering wheel, the second weight steering wheel 16, the other first weight steering wheel and the other driving device from one driving device.
The first weight steering wheel and the second weight steering wheel are used for traction of the traction rope 5, so that the traction rope starts from the rope head device and sequentially winds around one of the cabins, one of the driving devices, one of the first weight steering wheels, the second weight steering wheel 16, the other first weight steering wheel, the other driving device and the other cab until reaching the other end of the traction rope 5.
In another embodiment, two first weight-diverting wheels are symmetrically arranged on both sides of the first vertical surface 30, the axis of the second weight-diverting wheel 16 is in the first vertical surface 30, and the axes of all weight-diverting wheels are parallel to each other and perpendicular to the drive shaft axis 8.
In another embodiment, all counterweight steering wheels are located between the two drive devices in the horizontal direction in the second vertical plane 31.
In another embodiment, the two driving devices have the same driving shaft line 8, and the driving shaft line 8 is perpendicular to the first vertical surface 30, and the driving shaft line 8 is located between the second vertical surface 31 and the car along the horizontal direction in the first vertical surface 30.
In another embodiment, the two driving means are symmetrically arranged on both sides of the first vertical surface 30.
The two driving devices are positioned on the same horizontal plane and are symmetrically distributed (the vertical projection of the symmetrical axis 9 is positioned at the center of the second counterweight steering wheel 16), so that the configured bearing mechanical device has balanced stress, symmetrical and compact structure, saves cost and space, ensures more maintenance space in the machine room 4, and is convenient to install.
In another embodiment, two car top wheels are respectively arranged at the top of each car, the traction rope 5 winds the two car top wheels and then extends upwards to a corresponding rope head device and a driving device respectively, the traction rope 5 winds above the car to form a U-shaped section, a third vertical surface and a fourth vertical surface are respectively determined by the U-shaped sections corresponding to the two cars, and the third vertical surface and the fourth vertical surface are obliquely intersected with the first vertical surface 30, and the vertical projection is in a cross shape.
Two car top wheels are respectively arranged at the tops of the first car 1 and the second car 2, and the traction rope 5 can detour to form a U-shaped section at the tops of the two cars, so that the cars are more stable in the running process. The third vertical surface of the U-shaped section of the traction rope 5 above the first car 1, the fourth vertical surface of the U-shaped section of the traction rope 5 above the second car 2, and the vertical projection of the third vertical surface and the fourth vertical surface is cross-shaped, so that two U-shaped structures on one set of traction rope 5 play a role in balancing to a certain extent.
One end of the hoisting rope 5 is fixed in the machine room 4 by means of the first rope arrangement 21, the hoisting rope 5 extends downwards in the hoistway 3 and after passing one side of the second car 2 reaches and bypasses the right and left top car wheels 20, 19 located in the upper part of the first car 1, then the hoisting rope 5 extends further upwards to and bypasses the first drive arrangement 18 and downwards to and bypasses the first counterweight diverting wheel 17 in the upper part of the counterweight 6 and upwards to and bypasses the second counterweight diverting wheel 16, then the hoisting rope 5 extends further downwards to and bypasses the first counterweight diverting wheel 15 in the upper part of the counterweight 6 and upwards to and in turn bypasses the second drive arrangement 13 and the guide wheel 14, then the hoisting rope 5 extends further downwards to and bypasses the left and right top car wheels 12, 11 in the upper part of the second car 2 and upwards to the second rope arrangement 10.
The first rope hitch 21 and the second rope hitch 10 are elastic mechanical structures, so that two cabs can run more stably.
As shown in fig. 6 to 8, the projections of the right top sheave 11 and the left top sheave 12 on the upper portion of the second car 2 on the hoistway horizontal plane are located in the horizontal projection of the second car 2, and a guide sheave 14 is provided below the second driving device 13 in order to ensure that the suspension rope 5 between the left top sheave 12 and the second driving device 13 is kept in a vertical state in the hoistway 3. However, it is also possible to ensure that the suspension rope 5 between the left car top wheel 12 and the second drive device 13 is kept exactly in the vertical state in the hoistway 3 by lengthening the distance between the right car top wheel 11 and the left car top wheel 12 instead of providing the guide wheel 14.
In another embodiment the elevator traction system further comprises a support frame 7, and two first drive means 18, a second counterweight diverting pulley 16, and rope hitch are mounted to the support frame 7, respectively.
The two driving devices, the second counterweight steering wheel 16 and the rope hitch devices share the supporting frame 7, so that the number of parts can be reduced, and the whole system is more compact.
In addition, when the machine room 4 is not provided with the driving device due to the restriction of the building, two driving devices may be provided at the horizontal projection position of the top of the hoistway 3.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343085.2A CN110902523B (en) | 2019-12-23 | 2019-12-23 | Elevator traction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343085.2A CN110902523B (en) | 2019-12-23 | 2019-12-23 | Elevator traction system |
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| Publication Number | Publication Date |
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| CN110902523A CN110902523A (en) | 2020-03-24 |
| CN110902523B true CN110902523B (en) | 2025-06-03 |
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| CN201911343085.2A Active CN110902523B (en) | 2019-12-23 | 2019-12-23 | Elevator traction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111204642B (en) * | 2020-02-25 | 2025-05-30 | 杭州西奥电梯有限公司 | A system arrangement method of twin elevators |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205037A (en) * | 2006-12-14 | 2008-06-25 | 因温特奥股份公司 | Lift system |
| CN211393460U (en) * | 2019-12-23 | 2020-09-01 | 杭州西奥电梯有限公司 | Elevator traction system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022320A (en) * | 2000-09-19 | 2002-03-27 | 나병학 | Lope type multi elevator |
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2019
- 2019-12-23 CN CN201911343085.2A patent/CN110902523B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205037A (en) * | 2006-12-14 | 2008-06-25 | 因温特奥股份公司 | Lift system |
| CN211393460U (en) * | 2019-12-23 | 2020-09-01 | 杭州西奥电梯有限公司 | Elevator traction system |
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