EP2206673A1 - Lifting device for elevator, elevator car frame, and lifting method for elevator - Google Patents
Lifting device for elevator, elevator car frame, and lifting method for elevator Download PDFInfo
- Publication number
- EP2206673A1 EP2206673A1 EP07829315A EP07829315A EP2206673A1 EP 2206673 A1 EP2206673 A1 EP 2206673A1 EP 07829315 A EP07829315 A EP 07829315A EP 07829315 A EP07829315 A EP 07829315A EP 2206673 A1 EP2206673 A1 EP 2206673A1
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- European Patent Office
- Prior art keywords
- lifting
- car frame
- weight
- elevator
- top portion
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- 238000000034 method Methods 0.000 title claims description 16
- 230000005484 gravity Effects 0.000 claims description 29
- 238000004804 winding Methods 0.000 claims description 17
- 230000002452 interceptive effect Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 description 47
- 238000009434 installation Methods 0.000 description 24
- 230000035939 shock Effects 0.000 description 12
- 239000006096 absorbing agent Substances 0.000 description 11
- 230000009191 jumping Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/005—Mining-hoist operation installing or exchanging the elevator drive
Definitions
- the present invention relates to an elevator lifting device for lifting a weight in a hoistway of elevator, a car frame of elevator, and an elevator lifting method.
- a hoistway size needs be determined by contemplating the space requirements for accommodating the device after the installation and for performing an installation operation during a process of the installation.
- a carry-in route must be secured in order to carry the elevator device into the hoistway to be lifted up to a predetermined height, and a space for handling and a space for lifting margin must be secured within the hoistway.
- lifting margin means a height of the lifting machine, however, more accurately, it means an installation space including the height of the lifting machine.
- a suspension portion normally is provided at a higher position than a position of the center of gravity of a device targeted for lifting for preventing the device from overturning at lifting. Also, the suspension portion, also in a plane direction, approaches extremely close to the center of gravity. Based on this, the device targeted for lifting is lifted in a stable state. At an upper portion of a final height where the device targeted for lifting is attached as a product, "a space required for lifting" (the lifting margin) needs be secured.
- an overhead dimension OH (may be referred simply as OH).
- Fig. 22 illustrates a conventional example for describing the calculation of OH for the car jump.
- the overhead dimension OH 1 for the car jump will be described with reference to Fig. 22 .
- a configuration of Fig.22 will be simply described.
- Fig. 22 illustrates an elevator provided in the hoistway 5.
- the case illustrates the car 4 positioned at the uppermost floor.
- the car 4 and the counter weight 15 (may be referred to as a weight) go up and down by a hoisting machine M winding up a wire 18.
- the overhead dimension OH 1 is a distance between the uppermost floor face 20 and the hoistway top portion 5a.
- the overhead dimension OH 1 will be described in detail.
- a weight-side shock absorber 16 and a car-side shock absorber 17 are installed at a lower portion of the hoistway 5.
- the weight-side shock absorber 16 and the car-side shock absorber 17 provide coil springs 16a and 17a. Further, a use of the coil spring is only one example.
- the weight-side shock absorber 16 and the car-side shock absorber 17 may absorb shocks of the counter weight 15 and the car 4 by means of oil buffer and other methods .
- the overhead dimension (hereinbelow, referred to as OH 1 (car jump)) for jumping of the car 4 is calculated by the following equation (equation 1a). Note that the meaning of the symbols for the equation la follows below.
- OH 1 car jump CH + CRB + BST + KJP + C CH: a dimension from a car floor to a car TOP
- CRB a weight-side runby amount (a vertical distance from the counter weight when the car stops at the uppermost floor to a receiving face of the weight-side shock absorber 16 (an uppermost portion of the coil spring 16a)
- BST a stroke of the weight-side shock absorber 16 (a deflection amount of the coil spring 16a)
- KJP a jump amount of the car 4 (overrun due to an inertia)
- C a spacing from the TOP of the car (4) at jumping of the car 4 (the uppermost portion of the car 4) to the hoistway top portion 5a, and not operated above the car.
- Fig. 23 is a drawing for describing the calculation of OH for the weight jump.
- the overhead dimension OH 1 hereinafter, referred to as OH 1 (weight jump)
- OH 1 weight jump
- the same calculation as in the equation 1a is performed also for jumping of the counter weight 15.
- the OH 2 (weight jump) is as follows (equation 1b).
- OH 1 weight jump CH + CRB + BST + OJP + C
- the runby amount CRB and the shock absorber stroke BST are the car side
- the jump amount OJP indicates the jump amount of the weight side.
- CH is a distance from the uppermost floor face 20 to an uppermost portion of the counter weight 15.
- Fig. 24 is a drawing showing a relation of OR 1 , with CH, H, and C, for Figs. 22 and 23 .
- H 4 and H 5 will be used in the later explanation.
- the required overhead dimension OH 2 is as indicated in the equation 2a below.
- the OH 2 (the device is present) indicated below means a dimension in which case the device having the lifting margin H 2 is present above the car 4.
- Fig. 25 is a drawing that represents graphically the equation 2a below.
- OH 2 the ⁇ device is present OH 1 the car jump + H 1 ⁇ + H 2
- OH 2 the device is present / weight OH 1 the weight jump + H 1 + H 2
- H 1 a height of the device H 2 .
- the lifting margin OH 3 is used in the later description.
- Fig. 26 is a drawing for describing the case in which the device is not present on the car projection plane.
- an OH 0 dimension of the calculation equation (equation 3) below is OH 0 > OH 2 (the car jump) and OH 0 > OH 1 (the weight jump), then OH 0 becomes the required overhead dimension.
- OH 0 H 3 + H 2 + H 2
- H 0 is used in the later explanation.
- the machine room less elevator (hereinafter abbreviated as MRL) has rapidly spread not only domestically in Japan but also throughout the world.
- MRL machine room less elevator
- the system in which all of the elevator devices are installed in the hoistway has become the mainstream.
- a reduction of the hoistway size (a plane dimension, an overhead dimension, a pit depth) has promoted, and as for the required hoistway size, other than accommodation space of the device, an arrangement design of the device that foresees the installation factor must be carried out.
- a specialized lifting platform is used as a tool in order to lift the device such as the hoisting machine (for example, patent document 1).
- the specialized lifting platform is being used, an assemblage of the lifting platform and dismantling after the lifting will be required, taking too much labor for installation and increasing the cost.
- the present invention aims to supply a lifting device and a lifting method, in case of lifting the elevator device such as the hoisting machine, that do not accompany the increase in installation time and cost, and without having to extend the hoistway size.
- An elevator lifting device for lifting a weight to a vicinity of a top portion of a hoistway of elevator, comprising:
- the elevator lifting device according to claim 1 wherein the guide rail at its intermediate portion between the vicinity of the top portion and a vicinity of the lower portion is not fixed with a rail bracket.
- the elevator lifting device wherein the lifting machine includes a linear body attached to the car frame at one end, and a main body, arranged at the top portion, that lifts the car frame by winding up the linear body; wherein the main body, at least at its portion, is arranged to get under a portion lower than an upper portion of the car frame, when the car frame is lifted to the top portion by winding up the linear body; and wherein the car frame provides a car frame-side end attachment unit for attaching the one end of the linear body.
- the elevator lifting device wherein the car frame provides a placement member placing the weight at the upper portion; and wherein the weight, which is placed on the placement member, and which is placed on a position not interfering with the main body of the lifting machine when lifted up to the vicinity of the top portion by winding up the linear body by the main body of the lifting machine.
- the elevator lifting device wherein the car frame-side end attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight placed on the placement member and the car frame as one rigid body.
- the elevator lifting device wherein the lifting machine includes a linear body attached to a fixing unit fixed to the top portion at one end; and a main body attached to the car frame to get under a position lower than the upper portion of the car frame, at least at one portion, and that lifts the car frame to the top portion by winding up the linear body; and wherein the car frame provides a car frame-side main body attachment unit for attaching the main body of the lifting machine.
- the elevator lifting device wherein the car frame provides a placement member placing the weight at the upper portion; and wherein the weight is placed on the placement member, which is placed on a position not interfering with the lifting machine.
- the elevator lifting device wherein the car frame-side main body attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight to be placed on the placement member and the car frame as one rigid body.
- the elevator lifting device wherein the guide shoe provides a magnetic body that attracts the guide rail with a magnetic force.
- a car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side end attachment unit that attaches one end of a linear body of a lifting machine while its main body is mounted to a top portion of the hoistway, for attaching one end of the linear body to a lifting target and for lifting the lifting target to the top portion by winding up the linear body.
- a car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side main body attachment unit that attaches a main body of a lifting machine, for connecting one end of a linear body to a top portion of the hoistway, and for lifting the lifting target to the top portion by attaching the main body to the lifting target and winding up the linear body.
- An elevator lifting method for lifting a weight to a vicinity of a top portion of a hoistway of elevator for lifting a car frame, which is used as a platform for placing the weight to be lifted to the vicinity of the top portion of the hoistway, that is capable of going up and down along the guide rail by providing a guide shoe being engaged with the guide rail installed from a lower portion to a top portion of the hoistway, and which is guided by the guide rail and lifted by a lifting machine to the top portion while placing the weight.
- the present invention is directed to provide the lifting device and lifting method, in case of lifting the elevator device such as the hoisting machine, that do not accompany the increase in installation time and cost, and without having to extend the hoistway size.
- the first embodiment describes an elevator lifting device that lifts a weight, in the hoistway of the elevator.
- Fig. 1 is a drawing for describing a drawback in direct lifting of a weight 1 which is targeted for lifting.
- Fig. 2 is a drawing for describing a configuration of the lifting device 100 according to the first embodiment. Fig. 2 illustrates after an end of the lifting.
- the weight 1 in order to lift the weight 1 (for example, the hoisting machine), the weight 1 is suspended by temporarily attaching a lifting machine 3 (for example, a winch) to a ceiling of the hoistway 5 (a hoistway top portion 5a).
- a lifting machine 3 for example, a winch
- the weight 1 could not have been suspended just by the amount of height (the lifting margin H 2 ) of the lifting machine 3.
- the hoistway size becomes long just by the amount of the lifting margin H 2 .
- the first embodiment describes the lifting device 100 in which the lifting margin H 2 is not a primary factor for determining the hoistway size.
- the "lifting margin H 2 " is a height of the lifting machine, more correctly, it means an installation space including the height of the lifting machine.
- the lifting device 100 provides guide rails 8, a car frame 7, and the lifting machine 3.
- the lifting machine 3 is comprised of a lifting machine main body 30 and a chain 3a. Examples of the lifting machine 3 include a chain block, the winch, and so forth. As the winch, the wire is used instead of the chain 3a.
- the main characteristics of the lifting device 100 mainly consist of (1) to (3) below.
- Figs. 3 and 4 are drawings for describing the overhead dimension OH.
- the overhead dimension OH will be described further by referring to Figs. 3 and 4 .
- Figs. 3 and 4 illustrate the case in which the lifting margin H 2 becomes the primary factor of OH, when the car frame 7 is being used as the lifting platform.
- Fig. 3 illustrates the middle of lifting.
- Fig. 4 illustrates the end of lifting.
- the suspension point 2 is set to the uppermost portion of the car frame 7.
- the lifting margin H 2 becomes the primary factor of OH.
- Fig. 4 indicating the end of lifting
- H 1 a height of the device (the weight 1)
- H 3 a distance from the uppermost floor face 20 to a lower face of the device (the weight 1).
- H 4 CH + CRB + BST + KJP CH: an overall height of the car
- CRB a weight runby amount
- BST a weight shock absorber stroke
- KIP a car jump amount
- the required overhead dimension becomes the minimum.
- Two guide rails 8 are installed on the right and left of the car frame 7, from the lower portion 81 to the upper portion 83 of the hoistway 5.
- the guide rail 8, as described in Fig. 2 , the intermediate portion 82 is not fixed with the rail bracket 12.
- the car frame 7, as shown in Fig. 8 is comprised of a car floor 7a, two car vertical columns 7b, and a car upper frame 7c.
- the car frame 7 has a guide shoe 9 each at an upper portion and a lower portion of the car vertical column 7b.
- the car frame 7 goes up and down in the hoistway, by the guide shoe 9 engaging with the guide rail 8.
- the car upper frame 7c is attached to an upper portion of the two car vertical columns 7b.
- the car upper frame 7c has a placement member 72 for placing the weight 1. Further, when there is no placement member 72 on the car frame 7, the placement member 72 may be attached to the upper portion of the car frame 7.
- the weight 1 is suspended to the uppermost position, which will be described later in Figs. 9 and 11 , it is placed on the placement member 72 so as to not to interfere with the lifting machine main body 30.
- the car frame 7, as illustrated in Fig. 8 has a suspension tool 2a (an example of car frame-side end attachment unit) to which the hook 33 of the chain 3a as shown in Fig. 12 is hooked, at the respective car vertical columns 7b.
- the suspension tool 2a is fixed to the car vertical column 7b with a retaining tool 2b such as a bolt.
- a retaining tool 2b such as a bolt.
- an eye bolt 21 fixed to the car vertical column 7b with a nut 22 may be used as an attachment portion of the hook 33 of the chain 3a (an example of the car frame-side end attachment unit).
- an eye bolt 21 fixed to the car vertical column 7b with a nut 22 may be used as an attachment portion of the hook 33 of the chain 3a (an example of the car frame-side end attachment unit).
- a bracket 23 formed by opening a hole on a L-shaped board may be used as an attachment portion (an example of the car frame-side end attachment unit).
- the attachment portion of the hook 33 of the chain 3a in the car frame 7 (the suspension point 2) is arranged at a higher position than the position of the center of gravity 4b of the combined weights determined by regarding the weight 1 placed on the placement component 72 and the car frame 7 as one rigid body. That is, the suspension point 2 of the car frame 7 is located on the upper portion just by the amount for the dimension L than the above-described position of the center of gravity 4b. Based on this, the lifting machine main body 30 can stably suspend the weight 1. Further, Fig.
- the suspension point 2 is set on the position whereby the lifting margin H 2 does not affect the lifting of the weight 1 when the weight 1 is lifted to the final lifting position (the lower position just by the amount for dimension M, from the uppermost portion of the car frame 7).
- the first embodiment uses two lifting machines 3, however this is an exception.
- the number of lifting machines 3 is not limited.
- FIG. 6 shows the intermediate portion 82 of the guide rail 8. Therefore, the guide rail 8 is not fixed with the rail bracket 12.
- the car frame 7 placing the weight 1 is suspended by taking a force of the suspension point 2 as a point of application of the force.
- the suspension point 2 as described previously, is positioned at the upper portion by the amount for the dimension L than the position of the center of gravity 4b, therefore, the weight 1 is stably suspended.
- the car frame 7, while the guide shoe 9 is engaged with the guide rail 8 is lifted using the guide rail 8 as a guide.
- a momentum is generated around the suspension point 2.
- F 1 of Fig. 6 shows a horizontal pressing force based on the generated momentum (a force of pressing the guide rail 8 by the guide shoe 9). This pressing force F 1 will be described later in the explanation of Fig. 14 .
- the suspension point 2 Upon lifting the weight 1 to the final lifting position, the suspension point 2 is set to a position whereby the lifting margin H 2 does not affect the lifting of the weight 1. Also, the lifting machine main body 30, by winding up the chain 3a, in case of suspending the car frame 7 to the hoistway top portion 5a, at least a portion of it is arranged to get under a position lower than an upper portion 71 of the car frame 7 (car upper frame 7c). For example, as shown in Fig. 9 , the lifting machine main body 30 is arranged to a position that does not interfere with the car frame 7 under a state of being lifted to the uppermost portion.
- Fig. 11 is a drawing showing the modified example of the arrangement of the lifting machine 3 and the configuration of the car frame 7, for Fig. 8 .
- the case of Fig. 11 likewise, at least a portion of the lifting machine main body 30 gets under the position lower than the upper portion 71 (the car upper frame 7c).
- the lifting device 100 uses as a lifting platform the car frame 7 serving as a prime part, and places the weight 1 on the placement member 72 at the upper portion of the car frame 7.
- the suspension point 2 is arranged at the higher position than the position of the center of gravity 4b of the combined weights of the weight 1 placed on the placement member 72 and the car frame 7. Accordingly, the suspension point 2 is arranged at the higher position than the position of the center of gravity 4b of the combined weights determined by regarding the weight 1 placed on the placement member 72 and the car frame 7 as one rigid body For this reason, an overturning of the weight 1 can be prevented. Also, a momentum generated around the suspension point 2 during lifting can be reduced from this.
- the horizontal pressing force F 1 applied on the guide rail 8 due to the previously-described momentum can be made less than a pressing force F 2 which will be described later in Fig. 14 (F 1 ⁇ F 2 ).
- a derailment of the guide shoe 9 from the guide rail 8 can be prevented.
- the lifting device 100 diverts the car frame 7 as the lifting plat form, however, in order to suspend the weight 1 without diverting the car frame 7, there are two choices available, namely (1) to use a specialized platform capable of acquiring likewise the previously described effect (that is, the lifting margin H 2 is not the key factor of the overhead dimension), or, (2) to suspend a lower portion of the weight 1 provided that a height of the weight 1 is not less than the lifting margin H 2 (that is, the weight 1 is directly suspended without using the platform).
- the drawback of using the former "(1) specialized platform" will be described with reference to Figs. 13 to 15 .
- FIG. 13 illustrates a start of lifting when the specialized platform is used.
- Fig. 14 illustrates a mid-stage of lifting when the specialized platform is used.
- Fig. 15 illustrates an end of lifting when the specialized platform is used.
- the former "(1) specialized platform" as shown, for example, in Figs. 13 to 15 , a lifting platform will be required as a specialized tool at installation, and further, an assemblyof the lifting plat form and a dismantling activity after the lifting will be required, that causes an increase in the installation time.
- the specialized platform is not large (not heavy) to that extent.
- in order to make the lifting machine 3 to get under an inner portion of the specialized platform 11 at the end of lifting Fig.
- the latter "(2) direct suspension” imposes a restriction condition on the height of the weight 1 (the weight 1 has the height which is no less than the lifting margin H 2 of the lifting machine 3). Also, it lifts by setting the suspension point lower than the position of the center of gravity 1a of the weight 1. For this reason, for example, when lifting at 2-points suspension, due to restrictions such as device arrangement, when the position of the center of gravity la of the weight 1 does not lie on a straight line connecting the two suspension points of the 2-point suspension, there is a possibility that the weight 1 overturns (rotates).
- the overturning of the weight 1 may be prevented by using a guiding means, however, when the guiding means specialized for lifting is used, assemblage and dismantling operation for lifting occur, which incurs the installation time.
- the guiding means for example, it is conceivable to use the means of attaching the guide shoe to the weight 1, when a width of the weight 1 is about the same as a spacing between the two guide rails 8. Also, when the width of the weight 1 does not quite reach the spacing of the guide rails 8, it is conceivable to use the means for attaching the guide shoe via a predetermined attachment. Accordingly, when the guide rails 8 are diverted, serving as the prime part, decision on which measures to use is divided, depending on the installation methods.
- the guide rails 8 are assembled first, and the guide rails 8 are fixed with the rail brackets 12 at respective predetermined posit ions, even if a momentum that attempts to overturn (rotate) the weight 1 occurs, when suspending at the lower portion of the position of the center of gravity 1a for the weight 1, the horizontal load put on the guide rails 8 via the guide shoes is supported by the rail brackets 12. For this reason, the overturning of the weight 1 will not occur.
- the suspension point 2 is arranged at the higher position than the position of the combined weights 4b determined by regarding the weight 1 placed on the placement member and the car frame 7 as one rigid body. For this reason, the intermediate portion 82 can prevent overturning of the weight 1 even before installing the rail bracket 12.
- Figs. 16 and 17 are drawings for describing the case in which the guide shoe 9 comprises the magnetic body 10.
- Fig. 16 illustrates the case where a momentum is generated to the car frame 7 placing the weight 1.
- F1 of Fig. 16 indicates the pressing force of the guide shoe 9 that pushes the guide rail 8 due to the generated momentum.
- F3 indicates a force of the magnetic body 10 attached near the guide shoe 9 or on the guide shoe 9, for attracting the guide rail 8.
- Fig. 17 illustrates the guide shoe 9 comprising the magnetic body 10.
- Fig. 17 illustrates the case of attaching the magnetic body 10 on a rear face side of a face contacting with the guide rail 8.
- the guide rail 8 As a lifting stroke becomes higher, and a length of the intermediate portion 82 where the guide rail 8 is not fixed with the rail bracket 12 becomes even longer, a possibility of the derailment is increased even if the momentum is reduced. In order to prevent the derailment, the guide rail 8 may be mechanically retained. However, the guide rail 8 is configured by piling up a lengthy object having a predetermined length (a rail component configuring the guide rail 8). For this reason, connection portions of the guide rails 8 above and below can be microscopically regarded as joints. For this reason, when the horizontal force acts on the guide rail 8, a portion where the load is received is taken as a body, thereby displacing the guide rail 8 entirely.
- the magnetic body 10 is installed near the guide shoe 9 or on the guide shoe 9. From this, since the guide rail 8 is attracted to the magnetic body 10 by F3, the guide shoe 9 is not separated from the guide rail 8, making it capable to going up and down along the guide rail 8 at all times.
- the lifting machine main body 30 is installed at the hoistway top portion 5a.
- the second embodiment describes the case of installing the lifting machine main body 30 to the car frame 7.
- Fig. 18 illustrates the case of installing the lifting machine main body 30 at the hoistway top portion 5a (the first embodiment).
- Fig. 19 illustrates the case of installing the lifting machine main body 30 to the car frame 7.
- Figs. 20 and 21 are perspective views in case of installing the lifting machine main body 30 to the car frame 7.
- Fig. 20 corresponds to Fig. 9
- Fig. 21 corresponds to Fig. 11 .
- the lifting machine main body 30 is attached to the car vertical column 7b of the car frame 7. That is, in Figs. 20 and 21 , the lifting machine main body 30 provides a chain 35a having a hook at its end (not illustrated).
- This hook is hooked onto the suspension tool 2a (one example of the car frame-side main body attachment unit).
- a chain 3a (one example of linear body) is extending from the upper portion (top portion side) of the lifting machine main body 30 to the top portion, and the chain 3a is attached to the top portion as shown in Fig. 19 .
- the lifting machine main body 30 lifts the car frame 7 by winding up the chain 3a.
- a hook 24 provided directly on the lifting machine main body 30 may be hooked to the suspension tool 2a without bypassing the chain 35a.
- the lifting machine main body 30 may be attached directly to the car vertical column 7b.
- the lifting machine main body 30 In case of attaching the lifting machine main body 30 to the car frame 7, for example, it is attached under the state of ending lifting as in the first embodiment. That is, the lifting machine main body 30 is attached to the higher position than the position of the center of gravity 4b of the combined weights, in addition to that, to the position whereby the lifting margin H 2 does not affect the lifting of the weight 1 when the weight 1 is lifted to the final lifting position. Further, more specifically, the lifting machine main body 30, at least in portion, is attached to the car frame so as to get under the position lower than the upper portion 71 of the car frame 7 (car upper frame 7c). Based on this, even for the case of attaching the lifting machine main body 30 to the car frame 7 side, the lifting margin H 2 will not be the key factor of the overhead dimension OH.
- the lifting device 100 of the above embodiment has lifted the weight 1 by placing it on the upper portion of the car frame 7 of the placement member, however, the weight 1 may be lifted by placing it onto the car floor 7a.
- the lifting device 100 has been described in the above embodiment, however, it is possible to understand the lifting device 100 as a lifting method.
- the lifting device 100 a car frame of elevator capable of going up and down along the guide rails by providing the guide shoes that engages with the guide rails, from the lower portion to the top portion of the hoistway, wherein the car f rame which is used as the platform for placing the weight, for lifting to the vicinity of the top portion of the hoistway, under the state of placing the weight, which is lifted to the top portion by the lifting machine by taking the guide rails as a guide.
- the lifting device that performs installation by using the car frame and the car floor of elevator as the platform at lifting is described.
- the lifting device that has the magnetic body to the guide shoe and that attracts the guide rail by the magnetic body at lifting.
- the lifting device in which the lifting machine positions in the middle of the platform in case of lifting the platform to the uppermost portion of the hoistway, and that sets the suspension portion at the lower position than the uppermost position of the platform, and, at the position higher than the position of the center of gravity of the entire platform placing the weight and the weight, in case of using the car frame and the car floor as the lifting platform, has been described.
Abstract
Description
- The present invention relates to an elevator lifting device for lifting a weight in a hoistway of elevator, a car frame of elevator, and an elevator lifting method.
- Upon installation of an elevator device, a hoistway size needs be determined by contemplating the space requirements for accommodating the device after the installation and for performing an installation operation during a process of the installation. Especially, a carry-in route must be secured in order to carry the elevator device into the hoistway to be lifted up to a predetermined height, and a space for handling and a space for lifting margin must be secured within the hoistway. Herein, a term "lifting margin" means a height of the lifting machine, however, more accurately, it means an installation space including the height of the lifting machine.
- For example, when lifting the device using a chain block, in order to lift a device mass ranging from 500kg to 1000kg, one or two chain blocks having a height ranging from 400 to 500 mm for a manual type and 700 to 800mm for an electronic type are used. In order to directly suspend the device, a suspension portion normally is provided at a higher position than a position of the center of gravity of a device targeted for lifting for preventing the device from overturning at lifting. Also, the suspension portion, also in a plane direction, approaches extremely close to the center of gravity. Based on this, the device targeted for lifting is lifted in a stable state. At an upper portion of a final height where the device targeted for lifting is attached as a product, "a space required for lifting" (the lifting margin) needs be secured. Accordingly, a minimum position of the hoistway top portion (a required height of ceiling) needs be examined in views of "the space required for lifting" and "a required overhead dimension" which is determined from car jump or counter weight jump. Hereinafter, a dimension from an uppermost floor face to a hoistway top portion is referred to as "an overhead dimension OH" (may be referred simply as OH).
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Fig. 22 illustrates a conventional example for describing the calculation of OH for the car jump. The overhead dimension OH1 for the car jump will be described with reference toFig. 22 . A configuration ofFig.22 will be simply described.Fig. 22 illustrates an elevator provided in thehoistway 5. The case illustrates thecar 4 positioned at the uppermost floor. Thecar 4 and the counter weight 15 (may be referred to as a weight) go up and down by a hoisting machine M winding up awire 18. The overhead dimension OH1 is a distance between theuppermost floor face 20 and the hoistwaytop portion 5a. Hereinbelow, the overhead dimension OH1 will be described in detail. A weight-side shock absorber 16 and a car-side shock absorber 17 are installed at a lower portion of thehoistway 5. The weight-side shock absorber 16 and the car-side shock absorber 17 providecoil springs counter weight 15 and thecar 4 by means of oil buffer and other methods . For example, domestically within Japan, the overhead dimension (hereinbelow, referred to as OH1 (car jump)) for jumping of thecar 4 is calculated by the following equation (equation 1a). Note that the meaning of the symbols for the equation la follows below.
CH: a dimension from a car floor to a car TOP
CRB: a weight-side runby amount (a vertical distance from the counter weight when the car stops at the uppermost floor to a receiving face of the weight-side shock absorber 16 (an uppermost portion of thecoil spring 16a)
BST: a stroke of the weight-side shock absorber 16 (a deflection amount of thecoil spring 16a)
KJP: a jump amount of the car 4 (overrun due to an inertia) C: a spacing from the TOP of the car (4) at jumping of the car 4 (the uppermost portion of the car 4) to the hoistwaytop portion 5a, and not operated above the car.
Further, "an amount of the overrun by the car H" ofFig. 22 is expressed as
Fig. 24 illustrates a relation of OH1 and CH, H, and C, forFigs. 22 and23 . H4 and H5 will be used in the later explanation. -
Fig. 23 is a drawing for describing the calculation of OH for the weight jump. The overhead dimension OH1 (hereinafter, referred to as OH1 (weight jump)) for the weight jump will be described with reference toFig. 23 . The same calculation as in theequation 1a is performed also for jumping of thecounter weight 15. In case of jumping of thecounter weight 15, as can be seen inFig. 23 , the OH2 (weight jump) is as follows (equation 1b).
In equation 1b, the runby amount CRB and the shock absorber stroke BST are the car side, and the jump amount OJP indicates the jump amount of the weight side. Also, CH is a distance from theuppermost floor face 20 to an uppermost portion of thecounter weight 15. -
Fig. 24 is a drawing showing a relation of OR1, with CH, H, and C, forFigs. 22 and23 . H4 and H5 will be used in the later explanation. - Further, in case of arranging a device (for example, the hoisting machine) on the car projection plane, considering the pre-described lifting margin H2, the required overhead dimension OH2 is as indicated in the
equation 2a below. The OH2 (the device is present) indicated below means a dimension in which case the device having the lifting margin H2 is present above thecar 4.Fig. 25 is a drawing that represents graphically theequation 2a below.
In case of the car jump,
Also, in case of the weight jump, it is expressed as the followingequation 2b.
The meaning of the symbols is as follows:
H1: a height of the device
H2. the lifting margin
Further, OH3 is used in the later description. -
Fig. 26 is a drawing for describing the case in which the device is not present on the car projection plane. When the device is not present on the car projection plane, provided the installation height H3 of the device (a distance from theuppermost floor face 20 to a lower face of the device), an OH0 dimension of the calculation equation (equation 3) below is OH0 > OH2 (the car jump)
and
OH0 > OH1 (the weight jump), then OH0 becomes the required overhead dimension.
Further, H0 is used in the later explanation. - After a latter half of 1990s, the machine room less elevator (hereinafter abbreviated as MRL) has rapidly spread not only domestically in Japan but also throughout the world. The system in which all of the elevator devices are installed in the hoistway has become the mainstream. Further, a reduction of the hoistway size (a plane dimension, an overhead dimension, a pit depth) has promoted, and as for the required hoistway size, other than accommodation space of the device, an arrangement design of the device that foresees the installation factor must be carried out.
- In order to reduce the overhead dimension, one can consider that a specialized lifting platform is used as a tool in order to lift the device such as the hoisting machine (for example, patent document 1). However, when the specialized lifting platform is being used, an assemblage of the lifting platform and dismantling after the lifting will be required, taking too much labor for installation and increasing the cost.
- Patent document 1:
JP2000-34072A - The present invention aims to supply a lifting device and a lifting method, in case of lifting the elevator device such as the hoisting machine, that do not accompany the increase in installation time and cost, and without having to extend the hoistway size.
- An elevator lifting device for lifting a weight to a vicinity of a top portion of a hoistway of elevator, comprising:
- a guide rail that is arranged from a lower portion to the top portion of the hoistway;
- a car frame of elevator that is capable of going up and down, guided by the guide rail, by providing a guide shoe engaging with the guide rail, and that is used as a platform placing the weight for lifting to the vicinity of the top portion of the hoistway; and
- a lifting machine that lifts the car frame placing the weight to the top portion, guided by the guide rail.
- The elevator lifting device according to
claim 1 wherein the guide rail at its intermediate portion between the vicinity of the top portion and a vicinity of the lower portion is not fixed with a rail bracket. - The elevator lifting device, wherein the lifting machine includes a linear body attached to the car frame at one end, and a main body, arranged at the top portion, that lifts the car frame by winding up the linear body;
wherein the main body, at least at its portion, is arranged to get under a portion lower than an upper portion of the car frame, when the car frame is lifted to the top portion by winding up the linear body; and
wherein the car frame provides a car frame-side end attachment unit for attaching the one end of the linear body. - The elevator lifting device, wherein the car frame provides a placement member placing the weight at the upper portion; and
wherein the weight, which is placed on the placement member, and which is placed on a position not interfering with the main body of the lifting machine when lifted up to the vicinity of the top portion by winding up the linear body by the main body of the lifting machine. - The elevator lifting device, wherein the car frame-side end attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight placed on the placement member and the car frame as one rigid body.
- The elevator lifting device, wherein the lifting machine includes a linear body attached to a fixing unit fixed to the top portion at one end; and
a main body attached to the car frame to get under a position lower than the upper portion of the car frame, at least at one portion, and that lifts the car frame to the top portion by winding up the linear body; and
wherein the car frame provides a car frame-side main body attachment unit for attaching the main body of the lifting machine. - The elevator lifting device, wherein the car frame provides a placement member placing the weight at the upper portion; and
wherein the weight is placed on the placement member, which is placed on a position not interfering with the lifting machine. - The elevator lifting device, wherein the car frame-side main body attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight to be placed on the placement member and the car frame as one rigid body.
- The elevator lifting device, wherein the guide shoe provides a magnetic body that attracts the guide rail with a magnetic force.
- A car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side end attachment unit that attaches one end of a linear body of a lifting machine while its main body is mounted to a top portion of the hoistway, for attaching one end of the linear body to a lifting target and for lifting the lifting target to the top portion by winding up the linear body.
- A car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side main body attachment unit that attaches a main body of a lifting machine, for connecting one end of a linear body to a top portion of the hoistway, and for lifting the lifting target to the top portion by attaching the main body to the lifting target and winding up the linear body.
- An elevator lifting method for lifting a weight to a vicinity of a top portion of a hoistway of elevator, for lifting a car frame, which is used as a platform for placing the weight to be lifted to the vicinity of the top portion of the hoistway, that is capable of going up and down along the guide rail by providing a guide shoe being engaged with the guide rail installed from a lower portion to a top portion of the hoistway, and which is guided by the guide rail and lifted by a lifting machine to the top portion while placing the weight.
- The present invention is directed to provide the lifting device and lifting method, in case of lifting the elevator device such as the hoisting machine, that do not accompany the increase in installation time and cost, and without having to extend the hoistway size.
- The first embodiment describes an elevator lifting device that lifts a weight, in the hoistway of the elevator.
Fig. 1 is a drawing for describing a drawback in direct lifting of aweight 1 which is targeted for lifting.Fig. 2 is a drawing for describing a configuration of thelifting device 100 according to the first embodiment.Fig. 2 illustrates after an end of the lifting. - As illustrated in
Fig. 1 , in order to lift the weight 1 (for example, the hoisting machine), theweight 1 is suspended by temporarily attaching a lifting machine 3 (for example, a winch) to a ceiling of the hoistway 5 (a hoistwaytop portion 5a). In this way, theweight 1 could not have been suspended just by the amount of height (the lifting margin H2) of the liftingmachine 3. For this reason, there were cases in which the hoistway size becomes long just by the amount of the lifting margin H2. The first embodiment describes thelifting device 100 in which the lifting margin H2 is not a primary factor for determining the hoistway size. As mentioned previously, the "lifting margin H2" is a height of the lifting machine, more correctly, it means an installation space including the height of the lifting machine. - As illustrated in
Fig. 2 , thelifting device 100 providesguide rails 8, acar frame 7, and the liftingmachine 3. The liftingmachine 3 is comprised of a lifting machinemain body 30 and achain 3a. Examples of the liftingmachine 3 include a chain block, the winch, and so forth. As the winch, the wire is used instead of thechain 3a. The main characteristics of thelifting device 100 mainly consist of (1) to (3) below. - (1) As shown in
Fig. 2 ,guide rails 8 are respectively installed to both sides of thecar frame 7. The guide rails 8, at alower portion 81 and anupper portion 83 of thehoistway 5, are fixed withrail brackets 12. Thelower portion 81 is a vicinity of a lowermost floor (pit). Theupper portion 83 is a vicinity of an uppermost floor. Anintermediate portion 82 between thelower portion 81 and theupper portion 83 is not fixed with arail bracket 12. This is because a method of construction (without scaffolding) is assumed in which thelifting device 100 is used to lift theweight 1 such as the hoisting machine, and the lifted hoisting machine is used to fix theintermediate portion 82 with the rail bracket. Also, thecar frame 7 is used as a lifting platform for placing theweight 1. Based on these reasons, a specialized tool for lifting theweight 1 and a dismantle labor are not required. - (2) The lifting device
main body 30, when lifting thecar frame 7 up to the hoistwaytop portion 5a, at least a portion of it is arranged to get under a position lower than a car frameupper portion 71. Based on this, as shown inFig. 2 , theweight 1 can be suspended in spite of the amount for the lifting margin H2, and the hoistway size can be made small. - (3) A
suspension point 2 for suspending thecar frame 7 is provided lower than an uppermost portion of thecar frame 7, and, higher than a position of the center ofgravity 4b of the combined weights determined by regarding theweight 1 and thecar frame 7 as one rigid body, in thecar frame 7. As illustrated inFig. 2 , thesuspension point 2 is located above the position of the center of gravity just by the amount for the dimension L. That is, a position of thesuspension point 2 in thecar frame 7 is located above the center ofgravity 4b of the combined weights of theweight 1 and thecar frame 7 by the amount for the dimension L, therefore, the lifting devicemain body 30 can stably lift theweight 1. In addition, thesuspension point 2 shown inFig. 2 , when theweight 1 is lifted to a final lifting position, is set to a position whereby the lifting margin H2 does not affect the lifting of theweight 1. - (4) Accordingly, the
lifting device 100 uses thecar frame 7 as a lifting tool for placing theweight 1, as mentioned in (1) to (3), uses theguide rails 8 as a guide, and thesuspension point 2 is set to a position above the position of the center ofgravity 4b of the combined weights, and a position whereby the lifting margin H2 does not affect the lifting of theweight 1, when theweight 1 is lifted to the final lifting position. -
Figs. 3 and4 are drawings for describing the overhead dimension OH. The overhead dimension OH will be described further by referring toFigs. 3 and4 . Also,Figs. 3 and4 illustrate the case in which the lifting margin H2 becomes the primary factor of OH, when thecar frame 7 is being used as the lifting platform.
Fig. 3 illustrates the middle of lifting.
Fig. 4 illustrates the end of lifting. As illustrated inFig. 3 , thesuspension point 2 is set to the uppermost portion of thecar frame 7. For this reason, as inFig. 4 indicating the end of lifting, the lifting margin H2 becomes the primary factor of OH. In other words, as shown inFig. 4 , a maximum height that theweight 1 can be lifted becomes a height H0 obtained by subtracting the lifting margin H2 of the lifting devicemain body 30 from the hoistwaytop portion 5a (H0 = H1 + H3, when using the previously described equation in words) (refer toFig. 26 ).
H1: a height of the device (the weight 1)
H3: a distance from theuppermost floor face 20 to a lower face of the device (the weight 1).
Accordingly, in case ofFig. 3 , a minimum overhead dimension OH0 required, from an installation viewpoint, is - On the other hand, when the
car 4 is elevated to the most highest position (the case of weight jump is the same so that the description for the weight jump is omitted), suppose, for example, that a distance of vertical direction between a maximum attainable point when thecar 4 jumps due to thecounter weight 15 striking the weight-side shock absorber 16 and theuppermost floor face 20 is H4 (refer toFig. 24 ). If no other hoistway device is present on the projection plane of thecar 4, a dimension that added a safety distance H5 of the car uppermost portion at jumping and the hoistway top portion to H4 becomes the minimum required dimension OH1 determined by jumping of thecar 4.
That is, as shown inFig. 24 ,
Herein, H4 is expressed as
CH: an overall height of the car
CRB: a weight runby amount
BST: a weight shock absorber stroke
KIP: a car jump amount - If the overhead dimension is determined by OH1 (the car jump), or by OH1 (the weight jump), the required overhead dimension becomes the minimum. In the
lifting device 100 of the first embodiment, thesuspension point 2, when theweight 1 is lifted to the final lifting position, is set to the position whereby the lifting margin H2 does not affect the lifting of theweight 1, therefore, the lifting margin H2 does not become a key factor for calculating the overhead dimension.
That is, in thelifting device 100,
Alternatively, in regard to an elevator system that inevitably places the device on the projection plane of thecar 4, the required overhead dimension OH3 under such a circumstance will be
As such, the lifting margin H2 will not become the key factor for calculating the overhead dimension. - The configuration and operation of the
lifting device 100 of the first embodiment will be described specifically by referring toFigs. 5 to 12 . -
Fig. 5 illustrates a start of lifting of theweight 1 by thelifting device 100. -
Fig. 6 illustrates a mid-stage of lifting by thelifting device 100. -
Fig. 7 illustrates an end of lifting of theweight 1 by thelifting device 100. -
Fig. 8 illustrates a perspective view expressing the mid-stage of lifting by thelifting device 100, and corresponds toFig. 6 . -
Fig. 9 illustrates a perspective view expressing the end of lifting by thelifting device 100, and corresponds toFig. 7 . -
Fig. 10 illustrates a modified example of the configuration of thecar frame 7 and the arrangement of the liftingmachine 3 ofFig. 8 , and corresponds toFig. 8 . -
Fig. 11 illustrates the end of the lifting ofFig. 10 . -
Fig. 12 illustrates an installation configuration of thechain 3a. - As shown in
Fig. 5 orFig. 6 , the followings: - (1) A weight position
Theweight 1 targeted for lifting is placed on aplacement member 72 at an upper portion of thecar frame 7. - (2) A position of the lifting machine
The lifting machinemain body 30 is attached to the hoistwaytop portion 5a. The lifting machinemain body 30 is directly attached to a construction side of the hoistwaytop portion 5a, either that or it is suspended through an installedlifting beam 6.Fig. 5 illustrates a case of using thelifting beam 6. - (3) A suspension position
As shown inFig. 12 (a) , thechain 3a having ahook 33 at its end is drawn down from the hoisting machinemain body 30, and thecar frame 7 is suspended at thehook 33. The lifting machinemain body 30 lifts thecar frame 7 by winding up thechain 3a. - (4) A position relation of the lifting
machine 3 and thecar frame 7
In this case, as shown inFig. 7 , a portion that suspends thecar frame 7 with thechain 3a (the suspension point 2) is located at a higher position than the position of the center ofgravity 4b of the combined weights, and, at a position which can secure the lifting margin H2 of the liftingmachine 3 when theweight 1 is lifted to the final target height. In other words, thesuspension point 2 is set at above the position of the center ofgravity 4b of the combined weights, and, the position whereby the lifting margin H2 does not influence the lifting of theweight 1 when theweight 1 is lifted to the final lifting position. Also, the lifting machinemain body 30 of the liftingmachine 3, without interfering with thecar frame 7, at least a portion of it is arranged to get under a portion lower than the upper portion of thecar frame 7, when lifting thecar frame 7 to the hoistwaytop portion 5a by winding up the chain 3a. (1) thru (4) are described further in detail. - The start of lifting is described with reference to
Figs. 5 and8 . - Two
guide rails 8 are installed on the right and left of thecar frame 7, from thelower portion 81 to theupper portion 83 of thehoistway 5. Theguide rail 8, as described inFig. 2 , theintermediate portion 82 is not fixed with therail bracket 12. - The
car frame 7, as shown inFig. 8 , is comprised of acar floor 7a, two carvertical columns 7b, and a carupper frame 7c. Thecar frame 7 has aguide shoe 9 each at an upper portion and a lower portion of the carvertical column 7b. Thecar frame 7 goes up and down in the hoistway, by theguide shoe 9 engaging with theguide rail 8. The carupper frame 7c is attached to an upper portion of the two carvertical columns 7b. The carupper frame 7c has aplacement member 72 for placing theweight 1. Further, when there is noplacement member 72 on thecar frame 7, theplacement member 72 may be attached to the upper portion of thecar frame 7. When theweight 1 is suspended to the uppermost position, which will be described later inFigs. 9 and11 , it is placed on theplacement member 72 so as to not to interfere with the lifting machinemain body 30. - The
car frame 7, as illustrated inFig. 8 , has asuspension tool 2a (an example of car frame-side end attachment unit) to which thehook 33 of thechain 3a as shown inFig. 12 is hooked, at the respective carvertical columns 7b. Thesuspension tool 2a is fixed to the carvertical column 7b with aretaining tool 2b such as a bolt. Alternatively, instead of thesuspension tool 2a, as illustrated in (a) ofFig. 12 , aneye bolt 21 fixed to the carvertical column 7b with anut 22 may be used as an attachment portion of thehook 33 of thechain 3a (an example of the car frame-side end attachment unit). Alternatively, as illustrated in (b) ofFig. 12 , abracket 23 formed by opening a hole on a L-shaped board may be used as an attachment portion (an example of the car frame-side end attachment unit). As shown inFig. 5 , the attachment portion of thehook 33 of thechain 3a in the car frame 7 (the suspension point 2) is arranged at a higher position than the position of the center ofgravity 4b of the combined weights determined by regarding theweight 1 placed on theplacement component 72 and thecar frame 7 as one rigid body. That is, thesuspension point 2 of thecar frame 7 is located on the upper portion just by the amount for the dimension L than the above-described position of the center ofgravity 4b. Based on this, the lifting machinemain body 30 can stably suspend theweight 1. Further,Fig. 5 illustrates a position of the center of gravity 4a of asingle car frame 7. Also, thesuspension point 2 is set on the position whereby the lifting margin H2 does not affect the lifting of theweight 1 when theweight 1 is lifted to the final lifting position (the lower position just by the amount for dimension M, from the uppermost portion of the car frame 7). - The first embodiment uses two
lifting machines 3, however this is an exception. The number oflifting machines 3 is not limited. - Next, with reference to
Figs. 6 and8 , the lifting machinemain body 30 in the mid-stage of suspending thecar frame 7 placing theweight 1 will be described.Fig. 6 shows theintermediate portion 82 of theguide rail 8. Therefore, theguide rail 8 is not fixed with therail bracket 12. Thecar frame 7 placing theweight 1 is suspended by taking a force of thesuspension point 2 as a point of application of the force. Thesuspension point 2, as described previously, is positioned at the upper portion by the amount for the dimension L than the position of the center ofgravity 4b, therefore, theweight 1 is stably suspended. In the mid-stage of lifting, thecar frame 7, while theguide shoe 9 is engaged with theguide rail 8, is lifted using theguide rail 8 as a guide. Further, during the lifting process, based on the position relation of thesuspension point 2 and the center of gravity, in many cases, a momentum is generated around thesuspension point 2. F1 ofFig. 6 shows a horizontal pressing force based on the generated momentum (a force of pressing theguide rail 8 by the guide shoe 9). This pressing force F1 will be described later in the explanation ofFig. 14 . - Next, the end of lifting will be described by referring to
Figs. 7 and9 . Upon lifting theweight 1 to the final lifting position, thesuspension point 2 is set to a position whereby the lifting margin H2 does not affect the lifting of theweight 1. Also, the lifting machinemain body 30, by winding up thechain 3a, in case of suspending thecar frame 7 to the hoistwaytop portion 5a, at least a portion of it is arranged to get under a position lower than anupper portion 71 of the car frame 7 (carupper frame 7c). For example, as shown inFig. 9 , the lifting machinemain body 30 is arranged to a position that does not interfere with thecar frame 7 under a state of being lifted to the uppermost portion. Based on these, the lifting machinemain body 30, when thecar frame 7 is lifted to the uppermost portion, at least in portion of it is arranged to get under the position lower than the upper portion 71 (the carupper frame 7c). Based on these, the lifting margin H2 is no longer related to the calculation of the overhead dimension OH.Fig. 11 is a drawing showing the modified example of the arrangement of the liftingmachine 3 and the configuration of thecar frame 7, forFig. 8 . The case ofFig. 11 , likewise, at least a portion of the lifting machinemain body 30 gets under the position lower than the upper portion 71 (the carupper frame 7c). - The
lifting device 100 uses as a lifting platform thecar frame 7 serving as a prime part, and places theweight 1 on theplacement member 72 at the upper portion of thecar frame 7. In this case, thesuspension point 2 is arranged at the higher position than the position of the center ofgravity 4b of the combined weights of theweight 1 placed on theplacement member 72 and thecar frame 7. Accordingly, thesuspension point 2 is arranged at the higher position than the position of the center ofgravity 4b of the combined weights determined by regarding theweight 1 placed on theplacement member 72 and thecar frame 7 as one rigid body For this reason, an overturning of theweight 1 can be prevented. Also, a momentum generated around thesuspension point 2 during lifting can be reduced from this. Therefore, at theintermediate portion 82 where theguide rail 8 is not fixed, the horizontal pressing force F1 applied on theguide rail 8 due to the previously-described momentum can be made less than a pressing force F2 which will be described later inFig. 14 (F1<F2). Thus, a derailment of theguide shoe 9 from theguide rail 8 can be prevented. - Next, the drawback in which case the
car frame 7 is not diverted as the lifting platform will be described. Thelifting device 100 diverts thecar frame 7 as the lifting plat form, however, in order to suspend theweight 1 without diverting thecar frame 7, there are two choices available, namely (1) to use a specialized platform capable of acquiring likewise the previously described effect (that is, the lifting margin H2 is not the key factor of the overhead dimension), or, (2) to suspend a lower portion of theweight 1 provided that a height of theweight 1 is not less than the lifting margin H2 (that is, theweight 1 is directly suspended without using the platform).
At first, the drawback of using the former "(1) specialized platform" will be described with reference toFigs. 13 to 15 .
Fig. 13 illustrates a start of lifting when the specialized platform is used.
Fig. 14 illustrates a mid-stage of lifting when the specialized platform is used.
Fig. 15 illustrates an end of lifting when the specialized platform is used. The former "(1) specialized platform", as shown, for example, inFigs. 13 to 15 , a lifting platform will be required as a specialized tool at installation, and further, an assemblyof the lifting plat form and a dismantling activity after the lifting will be required, that causes an increase in the installation time. Normally, the specialized platform is not large (not heavy) to that extent. Also, in order to make the liftingmachine 3 to get under an inner portion of thespecialized platform 11 at the end of lifting (Fig. 15 ) just as in the case of using thecar frame 7 as the platform, there is a need to set the position of thesuspension point 2 below just by the amount for the lifting margin H2 from the uppermost portion of thespecialized platform 11. Based on these reasons, when thespecialized platform 11 placing theweight 1 thereon is suspended in two points by the liftingmachine 3, the position of the combinedweights 11a of theweight 1 and thespecialized platform 11 may become higher than thesuspension point 2 in some cases.Fig. 13 illustrates such cases. Thespecialized platform 11, when it is lifted from the state ofFig. 13 , the pressing force F2 that presses theguide rail 8 due to a momentum generated around thesuspension point 2 occurs (seeFig. 14 ). In case of regarding the suspension position lower in position than the position of the combinedweights 11a, the lifting becomes unstable, and the generated pressing force F2 becomes greater than the pressing force F1 shown inFig. 6 (F1 < F2). For this reason, since theguide rail 8 at itsintermediate portion 82 is not fixed with therail bracket 12, a danger of overturning of theweight 1 by the pressing force F2 increases. - On the other hand, the latter "(2) direct suspension" imposes a restriction condition on the height of the weight 1 (the
weight 1 has the height which is no less than the lifting margin H2 of the lifting machine 3). Also, it lifts by setting the suspension point lower than the position of the center ofgravity 1a of theweight 1. For this reason, for example, when lifting at 2-points suspension, due to restrictions such as device arrangement, when the position of the center of gravity la of theweight 1 does not lie on a straight line connecting the two suspension points of the 2-point suspension, there is a possibility that theweight 1 overturns (rotates). Also, in dealing with such cases, the overturning of theweight 1 may be prevented by using a guiding means, however, when the guiding means specialized for lifting is used, assemblage and dismantling operation for lifting occur, which incurs the installation time. Herein, as the "guiding means", for example, it is conceivable to use the means of attaching the guide shoe to theweight 1, when a width of theweight 1 is about the same as a spacing between the twoguide rails 8. Also, when the width of theweight 1 does not quite reach the spacing of theguide rails 8, it is conceivable to use the means for attaching the guide shoe via a predetermined attachment. Accordingly, when theguide rails 8 are diverted, serving as the prime part, decision on which measures to use is divided, depending on the installation methods. - For example, as in the scaffolding method, the
guide rails 8 are assembled first, and theguide rails 8 are fixed with therail brackets 12 at respective predetermined posit ions, even if a momentum that attempts to overturn (rotate) theweight 1 occurs, when suspending at the lower portion of the position of the center ofgravity 1a for theweight 1, the horizontal load put on theguide rails 8 via the guide shoes is supported by therail brackets 12. For this reason, the overturning of theweight 1 will not occur. - However, as in "no-scaffolding method", although the
guide rails 8 are assembled, the intermediate portion of theguide rail 8 is prior to the installation of therail bracket 12, so that under the situation where theguide rails 8 can displace to a certain extent, there is a danger that theweight 1 being directly suspended overturns by the displacement of theguide rails 8 when the horizontal load is put on theguide rails 8 via the guide shoes. Accordingly, in case of using thespecialized platform 11, and in case of the direct suspension, there is a danger that theweight 1 might overturn since a position lower than the position of the center of gravity is suspended. In this regard, in thelifting device 100 of the first embodiment, as described above, thesuspension point 2 is arranged at the higher position than the position of the combinedweights 4b determined by regarding theweight 1 placed on the placement member and thecar frame 7 as one rigid body. For this reason, theintermediate portion 82 can prevent overturning of theweight 1 even before installing therail bracket 12. -
Figs. 16 and17 are drawings for describing the case in which theguide shoe 9 comprises themagnetic body 10.Fig. 16 illustrates the case where a momentum is generated to thecar frame 7 placing theweight 1. F1 ofFig. 16 indicates the pressing force of theguide shoe 9 that pushes theguide rail 8 due to the generated momentum. F3 indicates a force of themagnetic body 10 attached near theguide shoe 9 or on theguide shoe 9, for attracting theguide rail 8.Fig. 17 illustrates theguide shoe 9 comprising themagnetic body 10.Fig. 17 illustrates the case of attaching themagnetic body 10 on a rear face side of a face contacting with theguide rail 8. - As a lifting stroke becomes higher, and a length of the
intermediate portion 82 where theguide rail 8 is not fixed with therail bracket 12 becomes even longer, a possibility of the derailment is increased even if the momentum is reduced. In order to prevent the derailment, theguide rail 8 may be mechanically retained. However, theguide rail 8 is configured by piling up a lengthy object having a predetermined length (a rail component configuring the guide rail 8). For this reason, connection portions of theguide rails 8 above and below can be microscopically regarded as joints. For this reason, when the horizontal force acts on theguide rail 8, a portion where the load is received is taken as a body, thereby displacing theguide rail 8 entirely. When the lifting stroke becomes long, even if a size of the horizontal force acting is the same, compared to the case where the lifting stroke is short, a distance between 2 points supporting theentire guide rails 8 above and below gets long. For this reason, an amount of the displacement at a portion of the body where the horizontal force acts gets large. When this displacement amount becomes greater than an engagement margin between theguide shoe 9 and theguide rail 8, theguide shoe 9 is separated from theguide rail 8, which result in the derailment. - Thus, as illustrated in
Fig. 17 , themagnetic body 10 is installed near theguide shoe 9 or on theguide shoe 9. From this, since theguide rail 8 is attracted to themagnetic body 10 by F3, theguide shoe 9 is not separated from theguide rail 8, making it capable to going up and down along theguide rail 8 at all times. - In the first embodiment, the lifting machine
main body 30 is installed at the hoistwaytop portion 5a. In contrast to this, the second embodiment describes the case of installing the lifting machinemain body 30 to thecar frame 7. -
Fig. 18 illustrates the case of installing the lifting machinemain body 30 at the hoistwaytop portion 5a (the first embodiment). In contrast to this,Fig. 19 illustrates the case of installing the lifting machinemain body 30 to thecar frame 7. Also,Figs. 20 and21 are perspective views in case of installing the lifting machinemain body 30 to thecar frame 7.Fig. 20 corresponds toFig. 9 , andFig. 21 corresponds toFig. 11 . As shown inFigs. 20 and21 , the lifting machinemain body 30 is attached to the carvertical column 7b of thecar frame 7. That is, inFigs. 20 and21 , the lifting machinemain body 30 provides achain 35a having a hook at its end (not illustrated). This hook is hooked onto thesuspension tool 2a (one example of the car frame-side main body attachment unit). On the other hand, achain 3a (one example of linear body) is extending from the upper portion (top portion side) of the lifting machinemain body 30 to the top portion, and thechain 3a is attached to the top portion as shown inFig. 19 . The lifting machinemain body 30 lifts thecar frame 7 by winding up thechain 3a. Further, as shown inFig. 19 , a hook 24 provided directly on the lifting machinemain body 30 may be hooked to thesuspension tool 2a without bypassing thechain 35a. Alternatively, the lifting machinemain body 30 may be attached directly to the carvertical column 7b. - In case of attaching the lifting machine
main body 30 to thecar frame 7, for example, it is attached under the state of ending lifting as in the first embodiment. That is, the lifting machinemain body 30 is attached to the higher position than the position of the center ofgravity 4b of the combined weights, in addition to that, to the position whereby the lifting margin H2 does not affect the lifting of theweight 1 when theweight 1 is lifted to the final lifting position. Further, more specifically, the lifting machinemain body 30, at least in portion, is attached to the car frame so as to get under the position lower than theupper portion 71 of the car frame 7 (carupper frame 7c). Based on this, even for the case of attaching the lifting machinemain body 30 to thecar frame 7 side, the lifting margin H2 will not be the key factor of the overhead dimension OH. - The
lifting device 100 of the above embodiment has lifted theweight 1 by placing it on the upper portion of thecar frame 7 of the placement member, however, theweight 1 may be lifted by placing it onto thecar floor 7a. - The
lifting device 100 has been described in the above embodiment, however, it is possible to understand thelifting device 100 as a lifting method. In other words, thelifting device 100, a car frame of elevator capable of going up and down along the guide rails by providing the guide shoes that engages with the guide rails, from the lower portion to the top portion of the hoistway, wherein the car f rame which is used as the platform for placing the weight, for lifting to the vicinity of the top portion of the hoistway, under the state of placing the weight, which is lifted to the top portion by the lifting machine by taking the guide rails as a guide. - In the above embodiment, for the elevator that installs devices at the vicinity of the top portion of the hoistway, the lifting device that performs installation by using the car frame and the car floor of elevator as the platform at lifting is described.
- In the above embodiment, the lifting device that has the magnetic body to the guide shoe and that attracts the guide rail by the magnetic body at lifting.
- In the above embodiment, the lifting device in which the lifting machine positions in the middle of the platform in case of lifting the platform to the uppermost portion of the hoistway, and that sets the suspension portion at the lower position than the uppermost position of the platform, and, at the position higher than the position of the center of gravity of the entire platform placing the weight and the weight, in case of using the car frame and the car floor as the lifting platform, has been described.
-
-
Fig. 1 is a drawing for describing the drawback in directly lifting the target for lifting, according to the first embodiment. -
Fig. 2 is a drawing for describing thelifting device 100, according to the first embodiment. -
Fig. 3 is a drawing showing the middle of lifting, according to the first embodiment. -
Fig. 4 is drawing showing the end of lifting, according to the first embodiment. -
Fig. 5 is a drawing showing the start of lifting by thelifting device 100, according to the first embodiment. -
Fig. 6 is a drawing showing the mid-stage of lifting by thelifting device 100, according to the first embodiment. -
Fig. 7 is a drawing showing the end of lifting by thelifting device 100, according to the first embodiment. -
Fig. 8 is a perspective view in the mid-stage of the lifting by thelifting device 100, according to the first embodiment. -
Fig. 9 is a perspective view of the end of lifting by thelifting device 100, according to the first embodiment. -
Fig. 10 is a modified example ofFig. 8 , showing a configuration of thecar frame 7 and an arrangement of the liftingmachine 3, according to the first embodiment. -
Fig. 11 illustrates the end of lifting ofFig. 10 , according to the first embodiment. -
Fig. 12 illustrates an attachment configuration of thechain 3a, according to the first embodiment. -
Fig. 13 is a drawing for describing the drawback in the suspension position, according to the first embodiment. -
Fig. 14 is a drawing for describing the drawback in the suspension position, according to the first embodiment. -
Fig. 15 is a drawing for describing the drawback in the suspension position, according to the first embodiment. -
Fig. 16 is a drawing for describing the effect of the magnetic body, according to the first embodiment. -
Fig. 17 is a drawing for describing the installation position of the magnetic body, according to the first embodiment. -
Fig. 18 is a drawing for describing the installation position of the lifting machinemain body 30, according to the second embodiment. -
Fig. 19 is a drawing for describing the installation position of the lifting machinemain body 30, according to the second embodiment. -
Fig. 20 is a perspective view for describing the installation position of the lifting machinemain body 30, according to the second embodiment. -
Fig. 21 is a perspective view for describing the installation position of the lifting machinemain body 30, according to the second embodiment. -
Fig. 22 illustrates the conventional art. -
Fig. 23 illustrates the conventional art. -
Fig. 24 illustrates a dimension relation of the conventional art. -
Fig. 25 illustrates a dimension relation of the conventional art. -
Fig. 26 illustrates a dimension relation of the conventional art. -
Weight 1; position of center ofgravity 1a forweight 1;suspension tool 2a;suspension point 2; retainingtool 2b; lifting-machine 3;chain 3a;car 4; position of center of gravity for car frame 4 (sole) ; position of center of gravity for (car frame + weight) ;hoistway 5 ; hoistwaytop portion 5a; liftingbeam 6;car frame 7;car floor 7a; carvertical column 7b; carupper frame 7c;guide rails 8; guideshoe 9;magnetic body 10; specializedplatform 11; position of center of gravity forweight 1 + specialized plat form 11 (11a);rail bracket 12 ;emergency stopper 13;counter weight 15;coil springs wire 18;uppermost floor 20;eye bolt 21;nut 22;bracket 23; hook 24; lifting machinemain body 30;hook 33;chain 35a; other end port ion 31; vicinity of top portion 51; car frameupper portion 71;placement member 72;lower portion 81;intermediate portion 82;upper portion 83; liftingdevice 100.
Claims (12)
- An elevator lifting device for lifting a weight to a vicinity of a top portion of a hoistway of elevator, comprising:a guide rail that is arranged from a lower portion to the top portion of the hoist way;a car frame of elevator that is capable of going up and down, guided by the guide rail, by providing a guide shoe engaging with the guide rail, and that is used as a platform placing the weight for lifting to the vicinity of the top portion of the hoistway; anda lifting machine that lifts the car frame placing the weight to the top portion, guided by the guide rail.
- The elevator lifting device according to claim 1 wherein the guide rail at its intermediate portion between the vicinity of the top portion and a vicinity of the lower portion is not fixed with a rail bracket.
- The elevator lifting device according to claim 2,
wherein the lifting machine includes a linear body attached to the car frame at one end, and a main body, arranged at the top portion, that lifts the car frame by winding up the linear body;
wherein the main body, at least at its portion, is arranged to get under a portion lower than an upper portion of the car frame, when the car frame is lifted to the top portion by winding up the linear body; and
wherein the car frame provides a car frame-side end attachment unit for attaching the one end of the linear body. - The elevator lifting device according to claim 3, wherein the car frame provides a placement member placing the weight at the upper portion; and
wherein the weight, which is placed on the placement member, and which is placed on a position not interfering with the main body of the lifting machine when lifted up to the vicinity of the top portion by winding up the linear body by the main body of the lifting machine. - The elevator lifting device according to claim 4, wherein the car frame-side end attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight placed on the placement member and the car frame as one rigid body.
- The elevator lifting device according to claim 2, wherein the lifting machine includes a linear body attached to a fixing unit fixed to the top portion at one end; and
a main body attached to the car frame to get under a position lower than the upper portion of the car frame, at least at one portion, and that lifts the car frame to the top portion by winding up the linear body; and
wherein the car frame provides a car frame-side main body attachment unit for attaching the main body of the lifting machine. - The elevator lifting device according to claim 6, wherein the car frame provides a placement member placing the weight at the upper portion; and
wherein the weight is placed on the placement member, which is placed on a position not interfering with the lifting machine. - The elevator lifting device according to claim 7, wherein the car frame-side main body attachment unit is arranged at a higher position than a position of center of gravity determined by regarding the weight to be placed on the placement member and the car frame as one rigid body.
- The elevator lifting device according to any one of claim 2 to 8, wherein the guide shoe provides a magnetic body that attracts the guide rail with a magnetic force.
- A car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side end attachment unit that attaches one end of a linear body of a lifting machine while its main body is mounted to a top portion of the hoistway, for attaching one end of the linear body to a lifting target and for lifting the lifting target to the top portion by winding up the linear body.
- A car frame of elevator to be used as a platform for lifting a weight to a vicinity of a top portion of a hoistway of elevator, the car frame of elevator providing a car frame-side main body attachment unit that attaches a main body of a lifting machine, for connecting one end of a linear body to a top portion of the hoistway, and for lifting the lifting target to the top portion by attaching the main body to the lifting target and winding up the linear body.
- An elevator lifting method for lifting a weight to a vicinity of a top portion of a hoistway of elevator, for lifting a car frame, which is used as a platform for placing the weight to be lifted to the vicinity of the top portion of the hoistway, that is capable of going up and down along the guide rail by providing a guide shoe being engaged with the guide rail installed from a lower portion to a top portion of the hoistway, and which is guided by the guide rail and lifted by a lifting machine to the top portion while placing the weight.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/069577 WO2009044481A1 (en) | 2007-10-05 | 2007-10-05 | Lifting device for elevator, elevator car frame, and lifting method for elevator |
Publications (4)
Publication Number | Publication Date |
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EP2206673A1 true EP2206673A1 (en) | 2010-07-14 |
EP2206673A4 EP2206673A4 (en) | 2013-12-25 |
EP2206673B1 EP2206673B1 (en) | 2014-12-17 |
EP2206673B2 EP2206673B2 (en) | 2018-02-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP07829315.6A Active EP2206673B2 (en) | 2007-10-05 | 2007-10-05 | Lifting device for elevator, elevator car frame, and lifting method for elevator |
Country Status (5)
Country | Link |
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EP (1) | EP2206673B2 (en) |
JP (1) | JP5264751B2 (en) |
KR (1) | KR101223860B1 (en) |
CN (1) | CN101821189B (en) |
WO (1) | WO2009044481A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11059701B2 (en) | 2018-12-06 | 2021-07-13 | Tk Elevator Innovation And Operations Gmbh | Methods and apparatuses for lifting elevator cars during installation |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103072881A (en) * | 2011-10-25 | 2013-05-01 | 康力电梯股份有限公司 | Mounting method of freight lift car frame |
JP5955280B2 (en) * | 2013-07-09 | 2016-07-20 | 株式会社日立ビルシステム | Lifting method for heavy elevators |
JP2016074534A (en) * | 2014-10-08 | 2016-05-12 | 株式会社日立ビルシステム | Hoist lifting method |
JP6351548B2 (en) * | 2015-06-23 | 2018-07-04 | 三菱電機ビルテクノサービス株式会社 | Elevator repair method |
WO2018207263A1 (en) * | 2017-05-09 | 2018-11-15 | 三菱電機ビルテクノサービス株式会社 | Elevator-use elongated article transportation tool, method for dismantling elevator guide rail, and method for installing elevator guide rail |
WO2019073585A1 (en) * | 2017-10-12 | 2019-04-18 | 三菱電機株式会社 | Lifting device for elevator hoisting machine |
CN107747414A (en) * | 2017-12-04 | 2018-03-02 | 昆明昆船物流信息产业有限公司 | A kind of lifting car of parking systems vehicle vertical elevator |
KR102083484B1 (en) * | 2018-09-20 | 2020-03-02 | 현대엘리베이터주식회사 | Rail lifting device of jump elevator |
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- 2007-10-05 KR KR1020107006435A patent/KR101223860B1/en active IP Right Grant
- 2007-10-05 JP JP2009535939A patent/JP5264751B2/en active Active
- 2007-10-05 WO PCT/JP2007/069577 patent/WO2009044481A1/en active Application Filing
- 2007-10-05 EP EP07829315.6A patent/EP2206673B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
CN101821189A (en) | 2010-09-01 |
JPWO2009044481A1 (en) | 2011-02-03 |
EP2206673B1 (en) | 2014-12-17 |
CN101821189B (en) | 2014-01-29 |
JP5264751B2 (en) | 2013-08-14 |
KR20100045526A (en) | 2010-05-03 |
EP2206673A4 (en) | 2013-12-25 |
WO2009044481A1 (en) | 2009-04-09 |
EP2206673B2 (en) | 2018-02-07 |
KR101223860B1 (en) | 2013-01-17 |
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