WO2011140887A1 - 循环运行的多轿厢电梯 - Google Patents

循环运行的多轿厢电梯 Download PDF

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Publication number
WO2011140887A1
WO2011140887A1 PCT/CN2011/073041 CN2011073041W WO2011140887A1 WO 2011140887 A1 WO2011140887 A1 WO 2011140887A1 CN 2011073041 W CN2011073041 W CN 2011073041W WO 2011140887 A1 WO2011140887 A1 WO 2011140887A1
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Prior art keywords
car
cable
linear motor
guide rail
elevator system
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PCT/CN2011/073041
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English (en)
French (fr)
Inventor
张应刚
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大连船舶工业船机重工有限公司
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Publication of WO2011140887A1 publication Critical patent/WO2011140887A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/10—Kinds or types of lifts in, or associated with, buildings or other structures paternoster type
    • 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
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/0407—Driving gear ; Details thereof, e.g. seals actuated by an electrical linear motor

Definitions

  • This invention relates to a multi-car elevator, and more particularly to a multi-car elevator in which a plurality of cars are circulated in a one-way cycle in a hoistway. Background technique
  • a circulating multi-car elevator as described in Japanese Patent Laid-Open No. H1760105A, a plurality of cars arranged in a hoistway, the cables connecting a plurality of cars in pairs
  • the cable drive mechanism has a plurality of cable drive pulleys for erecting cables.
  • the technical problem to be solved by the present invention is to overcome the above-mentioned drawbacks of the prior art, and to provide a circulation type multi-car elevator system which is simpler in structure, more powerful and efficient in the power system, and which can make the car run more smoothly.
  • the technical solution is implemented like this:
  • a multi-car elevator that circulates, a plurality of cars are arranged in pairs on a cable, and circulate in a one-way circulation in an elevator shaft of a building
  • the hoistway is composed of two parts, one side is a one-way up channel, one side is one side a one-way down channel, a car guide rail is symmetrically disposed on the left and right side wall of the hoistway, and its characteristics
  • the utility model is characterized in that: the guide rail is provided with a linear motor for driving the car, and at least part of the length of the guide rail is composed of a magnetic track with a magnet as a stator of the linear motor; the guide rail and the car are fixed on the car.
  • a card member equipped with a coil winding is used as a mover of the linear motor, and the card member slides along the guide rail under the action of the electromagnetic force of the linear motor and drives the car to move linearly along the guide rail;
  • the card member is provided with brushes on both sides The brush is electrically connected to the corresponding linear electrode on the guide rail when the card member slides relative to the guide rail;
  • the upper and lower ends of the hoistway are symmetrically mounted with a pulley block for erecting and supporting the cable, the pulley block provides support points and fixing for the cable The path of rotation.
  • the linear motor mounted on the car guide rail to drive the car operates to apply the above-mentioned thrust to the car in the upward passage, and applies the following thrust to the car in the descending passage.
  • the length of the track is not less than s/n, where s is the length of the cable and n is the number of cars disposed on the cable.
  • the car guide rails symmetrically disposed on the well walls on the left and right sides of the hoistway are provided with only one single rail on each side.
  • the pulley block is composed of two pulleys that are sleeved one after the other and connected to a rotating shaft.
  • the distance between the two pulleys is one-third to two-thirds of the width of the side of the car, and the side is a car and The side of the cable is fixedly connected.
  • two pulleys are arranged on each of the two pulleys disposed on the front and rear of the pulley block.
  • the car is a vertically symmetrical structure.
  • the car forms a fixed connection with the cable only in the middle of the body.
  • the car is distributed on the cable at a distance of xL, where L is the height of the floor and X is a natural number; further, the X is a natural number of 2-30.
  • the linear motor of the present invention is directly driven by the driving wheel of the prior art, so that the power system of the car is more direct and effective, and more controllable.
  • the car adopts the linear motor drive mode, and can apply the upward thrust and the downward thrust simultaneously in the up channel and the down channel, it can generate more power than the traditional car traction machine, which can be better. Meet the power needs of the car at high speed.
  • the car Since the car is symmetrically arranged on the cable, and the car basically utilizes the rotating principle of the Ferris wheel when running around two symmetrically arranged fixed pulley blocks, therefore, when the car receives a sufficient initial power, it can Continue to run by inertia, and basically eliminate the subsequent power, thus saving the elevator operation Power consumption.
  • Figure 1 is a front elevational view of an embodiment of a multi-car elevator operating in circulation according to the present invention
  • Figure 2 is a view showing a state in which the car is operated to the top and bottom ends of the hoistway in the above embodiment
  • Figure 3 is a transverse sectional view of the multi-car elevator in the cycle of the present invention
  • Figure 4 is a partial cross-sectional view showing the linear electrode on the guide rail in sliding contact with the brush on the card member;
  • Figure 5 is a partial perspective view of the car being fixedly coupled to the cable and running on the rail.
  • hoistway 1 1 , up channel, 12, down channel, 101, left side wall, 102, right side wall, 2, car, 21, card, 210, brush, 100, hoistway Entrance, 200, car entrance, 31, top reversal zone, 32, bottom reversal zone, 4, guide rail, 41, linear electrode, 7, cable, 71, fastening device, 8, pulley block, 81, pulley, 82 , the shaft.
  • FIG. 1 is a front elevational view showing the overall configuration of a multi-car elevator operating in a cycle according to the present invention.
  • a circulation circuit including an upstream passage 11 and a downstream passage 12 which are vertically divided, and a top reverse section 31 and a bottom reverse section 32 which are located at upper and lower ends of the hoistway 1 are formed.
  • six cars 2 are evenly arranged in pairs on the cable 7, and the car 2 is circulated in a clockwise one-way circular motion by the pulling of the cable 7 and the movement of the card member 21.
  • the upper and lower end reversal sections 31, 32 of the hoistway 1 are symmetrically mounted with a pulley block 8 for erecting and supporting the cable 7, and the upper and lower symmetrical pair of pulley blocks 8 are composed of a pulley 81 and a rotating shaft 82, which provide support points for the cable raft and Fixed rotation path.
  • the linear motor drive card member 21 applies an upward thrust to the car 2 in the up channel 1 1 and a downward thrust to the car 2 in the down channel 12.
  • the linear motor is composed of a stator mounted on the guide rail 4 and a mover mounted on the car 2 to drive the movement of the car 2.
  • the stator portion is composed of a track having a certain length mounted on the guide rail 4, the length is generally not less than s/n, here s/n, where s is the length of the cable, and n is the one of the cars 2 disposed on the cable number.
  • the purpose of at least this length of the magnetic track is that at least one pair of cars are subjected to the upward and downward thrust of the linear motor at any one time during the cycle of the plurality of cars 2, thereby ensuring the entire elevator system to operate cyclically.
  • the mover portion is composed of a card member 21 equipped with a coil winding, the card The piece 21 is always caught on the guide rail 4 during the movement of the car 2 up and down to ensure that the car 2 always moves along the guide rail 4.
  • the card member 21 When the card member 21 slides into the track portion on the guide rail 4 capable of generating linear thrust, the card member 21 acts as a secondary portion of the linear motor and a magnetic track portion which is the primary portion of the linear motor generates electromagnetic interaction with each other to form a linear thrust of the linear motor. .
  • the card member 21 can also serve as a carrier for the primary of the linear motor, and the guide rail 4 serves as a carrier for the secondary of the linear motor.
  • the linear motor of the present invention can be implemented in various forms, including at least two kinds of linear motors, synchronous or asynchronous, or short primary long secondary and long primary short secondary.
  • Different types or forms of linear motors can realize the function of the propulsion device in the present invention, and the linear thrust of the load on the linear guide by the linear motor is a technique well known to those skilled in the art, and has been widely used in many fields. Applications, such as propulsion devices for maglev trains, etc., are therefore not described in detail herein for the operation of linear motors in the system of the present invention.
  • Figure 2 shows a state diagram of the car moving to the top and bottom reversal zones of the hoistway. Since the car 2 is evenly arranged in pairs on the cable raft, when one car 2 enters the top reversal section 31, it is inevitable that the corresponding other car 2 enters the bottom reversal section 32 at the same time. After the car 2 enters the reverse section of the upper and lower ends of the hoistway 1, it must go through the reversal process of tilting, horizontal and re-tilting. In the process of reversing, since the car 2 itself is designed with up-and-down symmetrical structure, the car is naturally realized.
  • the lateral cross-sectional view of the multi-car elevator in Fig. 3 shows the arrangement of the guide rails 4 on the well walls 101, 102 on both sides of the hoistway 1 and the positional relationship between the car 2 and the cable 7.
  • the guide rails 4 disposed on the well walls 101 and 102 on both sides of the hoistway 1 are respectively a single rail, and the card member 21 is stuck on the guide rail 4 during the movement of the car 2 up and down.
  • the rotating device 8 is composed of two pulleys 81—the front and the rear sleeves are connected to a rotating shaft 82.
  • the spacing between the two pulleys 81 is one-third to two-thirds of the width of the side of the car, and two-thirds is suitable.
  • the side is the side of the car 2 that is fixedly connected to the cable 7.
  • the cables 7 are arranged side by side with two cables spaced at a pitch equal to the spacing of the two pulleys.
  • Figure 3 also shows that in the up channel 11 and the down channel 12, on the front side or the back side of the hoistway 1,
  • the hoistway entrance and exit 100 and the car entrance and exit 200 are respectively provided.
  • the hoistway entrance 100 and the elevator door on the car entrance and exit 200 are the same as the elevator doors in the conventional elevator. It opens automatically at the same time.
  • Fig. 5 further visualizes the position and the relationship between the car 2 and the cable 7, the guide rail 4 and the rotating device 8 in the operating state of the elevator system by a partial stereoscopic effect diagram.
  • the car 2 is fixedly attached to the cable 7 by a fastening device 71.
  • the car 2 is in fixed connection with the cable 7 only in the middle of the body.
  • the fastening device 71 is a rope card, one end of which is caught on the cable 7, and one end is fixed to the middle of the car body by bolts and nuts.
  • FIG. 3 and FIG. 5 above does not limit the present invention.
  • the stability of the operation of the car 2 may be better, even if this would increase the The manufacturing cost of the elevator system, and therefore the design of the guide rail 4 in a double rail should also be within the technical idea of the present invention.
  • the elevator car of the elevator system of the present invention is cyclically operated, and a plurality of cars can be simultaneously operated in one channel at the same time, the upper limit of the capacity of each car can be much smaller than that of the conventional elevator.
  • the capacity of 2 is limited to 4-6 people, and 5 people are suitable.
  • a main feature of the elevator system of the present invention is that when a car 2 reaches a predetermined floor and is leveled with the floor after deceleration, all other cars will also decelerate together at the same time, and the nearest floor Level the floor.
  • the car 2 must be evenly spaced equidistantly distributed over the cable 7.
  • the distribution distance of the car 2 on the cable raft should be xL, where L is the height of the floor and X is a natural number greater than 1, such as when the floor height is 3 In meters, the distribution distance is the distance from one car to the same position of the adjacent car, which is 3 meters, 6 meters, 9 meters or 12 meters and so on.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Description

说 明 书
循环运行的多轿厢电梯
技术领域
本发明涉及一种多轿厢电梯 （multi-car elevator ) , 更具体地说涉及一种 升降通道左右分置， 多个轿厢在升降通道中单向循环运行的多轿厢电梯。 背景技术
近年来， 随着高层住宅和高层办公楼的不断涌现， 作为高层建筑不可或缺 的升降电梯也在人们居家及工作中扮演了越来越重要的角色。 不管是回家和还 是上班， 生活在高层建筑中的人们都常常要面对等待电梯、 错过电梯或在电梯 中拥挤不堪的种种苦恼。
为了缓解此类问题， 一种能让乘客减少等待时间， 能更有效地利用井道空 间的多轿厢电梯系统便应运而生。 如在先技术公开号为 CN1760105A的日本专利 "多轿厢电梯"所描述的一种循环型的多轿厢电梯， 在升降通路内配置多个轿 厢， 缆绳将多个轿厢成对地连接， 缆绳的驱动机构具有架设缆绳的多个缆绳驱 动滑轮。
但以往此类在先技术通常都是采用驱动滑轮驱动绳索， 然后由绳索带动轿 厢运动的方式进行的。 此方式在解决绳索打滑或由于张力改变而产生的绳索振 动等问题时遇到了较大障碍。 即使采用公开号为 CN1760105A的日本专利 "多轿 厢电梯"所述的方式， 所述问题也难以得到根本性改观， 而且该专利所述的技 术方案使井道两端的设置过于复杂从而会对电梯系统的稳定性造成影响， 也必 然因此增加了多轿厢电梯系统的制造成本。 发明内容
本发明要解决的技术问题在于克服在先技术的上述缺陷， 提供一种结构上 更为简单， 动力系统更直接有效， 且能使轿厢运行更平稳的循环型多轿厢电梯 系统。 其技术方案是这样实现的：
循环运行的多轿厢电梯， 多个轿厢成对地配置在缆绳上， 在建筑物的电梯 井道中单向循环运行， 所述井道由左右两个部分构成， 一边为单向上行通道， 一边为单向下行通道， 所述井道左右两侧井壁上对称设置有轿厢导轨， 其特征 在于： 所述导轨上加装有推动轿厢运行的直线电机， 导轨上至少有部分长度由 装有磁铁的磁轨构成， 作为该直线电机的定子； 连接导轨与轿厢并固定在轿厢 上的一装有线圈绕组的卡件作为直线电机的动子， 该卡件在直线电机电磁力的 作用下沿导轨滑行并带动轿厢沿导轨做直线运动； 所述卡件两侧装有电刷， 电 刷在卡件相对导轨滑行时与导轨上对应的线性电极滑动接触形成电连接； 所述 井道上下两端对称地装有架设和支撑缆绳的滑轮组， 该滑轮组为缆绳提供了支 撑点和固定的转动路径。
较佳的， 所述安装在轿厢导轨上推动轿厢运行的直线电机在上行通道中对 轿厢施以上行推力， 在下行通道中对轿厢施以下行推力。
较佳的， 所述磁轨的长度不小于 s/n， 其中 s为缆绳的长度， n为配置在缆 绳上轿厢的个数。
较佳的， 所述对称设置在井道左右两侧井壁上的轿厢导轨， 每一侧上只装 有一条单轨。
较佳的， 所述滑轮组由两个滑轮一前一后套接在一个转轴上组成， 两个滑 轮的间距为轿厢侧面宽度的三分之一至三分之二， 该侧面为轿厢与缆绳固定连 接的一面。
较佳的， 所述滑轮组上前后设置的两个滑轮上各架设有一条缆绳。
较佳的， 所述轿厢为上下对称结构。
较佳的， 所述轿厢仅在轿身中部与缆绳形成固定连接。
较佳的， 所述轿厢在缆绳上的分布间距为 xL， 其中 L是楼层的高度， X为 自然数； 进一步的， 所述 X为 2-30的自然数。
本发明的有益效果在于：
1、 通过改变电梯轿厢的驱动方式， 由在先技术的驱动轮摩擦驱动改为本发 明的直线电机直接推动， 使轿厢在运行中动力系统更直接有效， 而且更具可控 性。
2、 由于对轿厢采用了直线电机驱动的方式， 并且可以在上行通道和下行通 道中同时施加上行推力和下行推力， 相比传统的轿厢曳引机能产生更大的动力， 可以更好地满足轿厢高速运行的动力需求。
3、 由于轿厢在缆绳上对称配置， 且轿厢在绕着两个对称设置的固定滑轮组 运行时实质上利用了摩天轮的转动原理， 因此， 当轿厢得到一个足够的初动力 后就可以靠惯性继续运行， 而基本上省去了后续动力， 从而节省了电梯的运行 功耗。
4、 由于轿厢的上下对称结构设计， 使轿厢在井道顶端或底端反转后， 轿厢 顶部和底部可以自行实现功能转换。 附图说明
图 1是本发明所述循环运行的多轿厢电梯一实施例的前视图；
图 2是表示上述实施例中轿厢运行到井道顶端和底端时的状态示图； 图 3是本发明所述循环运行的多轿厢电梯横向截面图；
图 4是导轨上线性电极与卡件上电刷滑动接触的局部截面示图；
图 5是轿厢与缆绳固定连接并在导轨上运行的局部效果示意图。
图中： 1、 井道， 1 1、 上行通道， 12、 下行通道， 101、 左侧井壁， 102、 右 侧井壁， 2、 轿厢， 21、 卡件， 210、 电刷， 100、 井道出入口， 200、 轿厢出入 口， 31、 顶部反转区间， 32、 底部反转区间， 4、 导轨， 41、 线性电极， 7、 缆 绳， 71、 紧固装置， 8、 滑轮组， 81、 滑轮， 82、 转轴。 具体实施方式
下面结合附图对本发明的一个实施例进行说明。
图 1 表示了本发明所述循环运行的多轿厢电梯的整体构成， 是其前视图。 形成有由左右分置的上行通道 11、下行通道 12和位于井道 1上下两端的顶部反 转区间 31、底部反转区间 32构成的循环回路。在循环回路内 6台轿厢 2均匀成 对地配置在缆绳 7上， 在缆绳 7的牵引和卡件 21带动下轿厢 2做顺时针单向循 环运动。 所述井道 1上下两端反转区间 31、 32对称地装有架设和支撑缆绳 7的 滑轮组 8， 上下对称的一对滑轮组 8均由滑轮 81和转轴 82组成， 为缆绳 Ί提供 了支撑点和固定的转动路径。 本实施例中直线电机驱动卡件 21 在上行通道 1 1 中对轿厢 2施以向上的推力， 在下行通道 12中对轿厢 2施以向下的推力。 所述 直线电机由装在导轨 4上的定子和装在轿厢 2上带动轿厢 2运动的动子组成。 定子部分由装在导轨 4上有一定长度的磁轨构成， 该长度一般不小于 s/n， 此处 为 s/n， 其中 s为缆绳的长度， n为配置在缆绳上轿厢 2的个数。 磁轨至少需要 这一长度的目的在于， 在多个轿厢 2循环运行的过程中在任一时刻至少会有一 对轿厢受到直线电机向上和向下推力的作用， 从而保证了整个电梯系统循环运 行中受力的连接性和平稳性。 动子部分由一装有线圈绕组的卡件 21构成， 该卡 件 21在轿厢 2上下运动的过程中始终卡在导轨 4上， 以保证轿厢 2始终沿导轨 4运动。 当卡件 21滑入能产生直线推力的导轨 4上的磁轨部分时， 卡件 21即作 为直线电机的次级与作为直线电机初级的磁轨部分相互产生电磁作用以形成直 线电机的直线推力。 在不同需要的情况下， 卡件 21也可以作为直线电机初级的 载体， 而导轨 4作为直线电机次级的载体。
本发明中所述直线电机可以有多种实现形式， 至少包括同步、 异步两种直 线电机， 或短初级长次级和长初级短次级两种形式。 不同种类或形式的直线电 机皆可在本发明中实现推进装置的功能， 而且通过直线电机在直线导轨上对负 载产生直线推力已是所属领域技术人员公知的技术， 且在很多领域已经得到了 广泛应用， 如磁悬浮列车的推进装置等， 所以此处不再对直线电机在本发明系 统中的工作过程详细说明。
图 2 示出了轿厢运动到井道顶部和底部反转区间时的状态示意图。 由于轿 厢 2在缆绳 Ί上是均匀成对配置的， 所以当有一个轿厢 2进入到顶部反转区间 31时， 必然同时就有对应的另一个轿厢 2进入底部反转区间 32。 轿厢 2进入井 道 1 上下两端反转区间后都要经过倾斜、 水平、 再倾斜的反转过程， 在反转过 程中因为轿厢 2 本身是上下对称结构设计， 所以就自然地实现了轿厢顶部和底 部功能上的转换， 即当轿厢 2从上行通道 11进入下行通道 12或从下行通道 12 进入上行通道 11时， 轿厢 2的在上行通道 11中的顶部就变成了在下行通道 12 中的底部， 反之亦然。
由图 2还可以看出， 当轿厢 2进入井道 1上下两端反转区间时， 作为直线 电机动子的卡件 21就会脱离导轨 4，当重新进入上行通道 11或下行通道 12时， 卡件 21又会重新卡在导轨 4上。
图 3中用多轿厢电梯横向截面图表示了导轨 4在井道 1两侧井壁 101、 102 上的设置情况以及轿厢 2与缆绳 7的位置关系。
由图 3可以看出本实施例中， 设置在井道 1两侧井壁 101、 102上的导轨 4 分别为一单轨， 所述卡件 21在轿厢 2上下运动的过程中卡在导轨 4上。 转动装 置 8由两个滑轮 81—前一后套接在一个转轴 82上组成， 两个滑轮 81的间距为 轿厢侧面宽度的三分之一至三分之二， 以三分之二为宜， 该侧面为轿厢 2 与缆 绳 7固定连接的一面。 所述缆绳 7并排设置有两条， 两条缆绳的间距等于两个 滑轮的间距。
图 3还示出了在上行通道 11和下行通道 12中， 在井道 1的前侧或者后侧， 分别设有井道出入口 100和轿厢出入口 200，当轿厢 2根据系统指令在某一楼层 停止并平层后， 井道出入口 100和轿厢出入口 200上的电梯门和传统电梯中的 电梯门一样会同时自动打开。
图 4示出了导轨 4两侧线性电极 41与卡件 21两侧电刷 210滑动接触的连 接关系， 卡件 21两侧各装有一个电刷 210， 在卡件 21相对导轨 4滑行时与导轨 4上对应的线性电极 41滑动接触形成电连接，并由该线性电极 41将电力通过电 刷 210传递给卡件 21中的线圈绕组和轿厢 2内的用电设施。
图 5用局部立体效果图进一步直观表示了轿厢 2与缆绳 7、导轨 4及转动装 置 8在电梯系统运行状态下的位置及作用关系。
如图 5所示， 轿厢 2通过一紧固装置 71固定连接在缆绳 7上。 且在本实施 列中， 轿厢 2仅在轿身中部与缆绳 7形成固定连接。 该紧固装置 71为一绳卡， 一端卡在缆绳 7上， 一端通过螺栓螺母固定在轿身中部。
上述图 3、 图 5所给出的实施例， 对本发明并不起限定作用， 在本发明中导 轨 4设置成双轨时， 对轿厢 2运行的稳定性可能会更好， 即使这样会增加该电 梯系统的制造成本， 因此导轨 4做成双轨的设计也应该在本发明的技术构思范 围之内。
由于本发明升降电梯系统电梯轿厢是循环运行的， 而且一个通道中同时可 以有多台轿厢同时运行， 所以每个轿厢的容载上限比传统电梯可以小很多， 以 上实施列中轿厢 2的容载上限定为 4-6人， 以 5人为宜。
本发明升降电梯系统一个主要特点是， 当一个轿厢 2 达到某一预定楼层， 并在减速后与该楼层进行平层时， 所有其它轿厢这时也会一起减速运行， 并与 就近的楼层进行平层。 鉴于这一特点， 所述轿厢 2 必须是均匀等距地分布在缆 绳 7上。 而且为了确保每一个轿厢都能够同时准确平层， 所述轿厢 2在缆绳 Ί 上的分布间距应为 xL， 其中 L是楼层的高度， X为大于 1的自然数， 如当楼层 高度为 3 米时， 该分布间距即一个轿厢到相邻轿厢同一位置的距离， 就该是 3 米、 6米、 9米或 12米以此类推。
以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局 限于此。 任何将直线电机用于循环型多轿厢电梯系统轿厢推进装置的设计均应 属于本发明所阐明的技术构思的保护范围， 任何熟悉本技术领域的技术人员在 本发明揭露的技术范围内， 根据本发明的技术方案及其发明构思加以等同替换 或改变， 都应涵盖在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 循环运行的多轿厢电梯， 多个轿厢成对地配置在缆绳上， 在建筑物的电 梯井道中单向循环运行， 所述井道由左右两个部分构成， 一边为单向上行通道， 一边为单向下行通道， 所述井道左右两侧井壁上对称设置有轿厢导轨， 其特征 在于： 所述导轨上加装有推动轿厢运行的直线电机， 导轨上至少有部分长度由 装有磁铁的磁轨构成， 作为该直线电机的定子； 连接导轨与轿厢并固定在轿厢 上的一装有线圈绕组的卡件作为直线电机的动子， 该卡件在直线电机电磁力的 作用下沿导轨滑行并带动轿厢沿导轨做直线运动； 所述卡件两侧装有电刷在卡 件相对导轨滑行时与导轨上对应的线性电极滑动接触形成电连接； 所述井道上 下两端对称地装有架设和支撑缆绳的滑轮组， 该滑轮组为缆绳提供了支撑点和 固定的转动路径。
2、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 安装在轿厢导轨上推动轿厢运行的直线电机在上行通道中对轿厢施以上行推 力， 在下行通道中对轿厢施以下行推力。
3、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 磁轨的长度不小于 s/n， 其中 s为缆绳的长度， n为配置在缆绳上轿厢的个数。
4、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 对称设置在井道左右两侧井壁上的轿厢导轨， 每一侧上只装有一条单轨。
5、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 滑轮组由两个滑轮一前一后套接在一个转轴上组成， 两个滑轮的间距为轿厢侧 面宽度的三分之一至三分之二， 该侧面为轿厢与缆绳固定连接的一面。
6、 根据权利要求 1或 5所述的循环运行的多轿厢电梯系统， 其特征在于： 所述滑轮组上前后设置的两个滑轮上各架设有一条缆绳。
7、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 轿厢为上下对称结构。
8、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 轿厢仅在轿身中部与缆绳形成固定连接。
9、 根据权利要求 1所述的循环运行的多轿厢电梯系统， 其特征在于： 所述 轿厢在缆绳上的分布间距为 xL， 其中 L是楼层的高度， X为 2-30的自然数。
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