JP6750754B2 - Lifting elevator for construction work - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lift extension work elevator.

Patent Document 1 discloses an elevator for work height extension work. The lift-elevation type construction elevator is an elevator in which the raising and lowering strokes of the car are sequentially extended as the construction work progresses. In the lift-elevating construction elevator, the raising/lowering stroke of the car is extended by raising the machine room unit equipped with the hoisting machine in the hoistway. According to such an elevator, workers and materials for construction work can be efficiently transported.

European Patent No. 2804828

Generally, the rope of an elevator is twisted. Kink can occur if tension is applied while the rope is excessively twisted. In order to prevent this, it is necessary to eliminate the twist of the rope before applying the load of the lifting body to the rope. A method that can eliminate the twist of the rope is, for example, to rotate the end of the unwound rope. However, the rotation of the rope cannot be transmitted beyond the sheave of the hoist. The rope in Patent Document 1 is wound in the order of a suspension weight suspension vehicle located at the lower part of the hoistway, a sheave of a hoisting machine, and a suspension vehicle of a car connected to the machine room unit, and then the machine room unit. Connected to. In this case, since most of the rope is located between the hoisting machine and the rope drum, the above method cannot eliminate the twist of the rope.

The present invention has been made to solve the above problems. It is an object of the present invention to provide a lift-extending type construction elevator that can eliminate the twist of a rope.

The lift extension work elevator according to the present invention is capable of raising and lowering a hoistway, a machine room unit equipped with a hoist, and a hoistway, capable of supporting a load by the machine room unit. 1 The lifting and lowering body, and the 2nd lifting and lowering body which can lift up and down a hoistway and can support a load in the lower part of the hoistway, The rope extended from the rope drum mounted in the said machine room unit is at least After being wound around the suspension wheel of the first elevating body via one direction changing device, it is then wrapped around the sheave of the hoisting machine, and after being wrapped around the sheave of the hoisting machine. (2) It is wound around a suspension vehicle of an elevating body and is connected to the machine room unit after being suspended around a suspension wheel of the second elevating body, and at least one of the direction changing devices is independent of the machine room unit. Thus, the movable direction changing device is movable in the hoistway freely in the height direction and can be fixed to at least one of the machine room unit and the structure in the hoistway.

According to the present invention, the rope unwound from the rope drum mounted in the machine room unit is wound around the suspension wheel of the first lifting body and then wound around the sheave of the hoisting machine. After being wound around the sheave, it is wound around the suspension wheel of the second lifting body, and after being wrapped around the suspension wheel of the second lifting body, it is connected to the machine room unit. For this reason, it is possible to eliminate the twist of the rope of the lift for extension work type construction.

FIG. 2 is a schematic diagram showing a first example of a lift extension work elevator according to the first embodiment. It is a schematic diagram which shows the 2nd example of the lift for construction lifting type construction in Embodiment 1. It is a schematic diagram which shows the 3rd example of the lift for construction lifting type construction in Embodiment 1. FIG. 3 is a front view showing a structural example of a machine room unit in the first embodiment. FIG. 5 is a front view showing another structural example of the machine room unit in the first embodiment.

Hereinafter, embodiments will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1.
FIG. 1 is a schematic view showing a first example of a lift extension work elevator according to the first embodiment.

FIG. 1 shows a state in a hoistway (not shown) of a building under construction. The lift extension work elevator includes a first lifting body 1, a second lifting body 2, a machine room unit 3, and a hoisting machine. A plurality of ropes 5 are wound around the sheave 4 of the hoisting machine.

The first lifting body 1 is one of an elevator car and a counterweight. The second lift 2 is the other of the elevator car or the counterweight. FIG. 1 illustrates a case where the first lifting body 1 is a car and the second lifting body 2 is a counterweight. In this case, the first lift 1 can move up and down the hoistway along a pair of car guide rails (not shown). Further, in this case, the second lifting body 2 can move up and down the hoistway along a pair of counterweight guide rails (not shown).

The load of the second lifting body 2 can be supported in the lower part of the hoistway. The second lifting body 2 may be mounted on, for example, a shock absorber provided in a pit. The second lift 2 may be fixed to, for example, a car guide rail or a counterweight guide rail. The second lift 2 may be fixed to, for example, a structure on the side of a building under construction.

The machine room unit 3 can move up and down the hoistway along at least one of the car guide rail and the counterweight guide rail, for example. The machine room unit 3 can be fixed to, for example, a car guide rail, a counterweight guide rail, or a building-side structure under construction.

The machine room unit 3 is equipped with, for example, a hoisting machine, a control panel (not shown), and a plurality of rope drums 6. The machine room unit 3 is provided with, for example, two or more direction changing devices. FIG. 1 shows a case where a first direction changing pulley 8 and a second direction changing pulley 9 are provided as a direction changing device. In FIG. 1, a pulley is shown as an example of the direction changing device, but if the rope 5 can change the direction and the rope 5 can smoothly slide on the direction changing device, the direction changing device has a pulley structure. It doesn't have to be.

The number of rope drums 6 corresponds to the number of ropes 5 used in the elevator. For example, when 6 ropes 5 are used in the elevator, 6 rope drums 6 are mounted in the machine room unit 3. Each rope drum 6 is pre-wound with a rope 5 having a length that can be used for an up-and-down stroke when the building is completed.

The machine room unit 3 is provided with, for example, a connecting device 7 and a rope gripping device 10. The coupling device 7 and the rope gripping device 10 are installed, for example, at positions overlapping the first lifting body 1 when viewed in the vertical direction. The coupling device 7 and the rope gripping device 10 are installed, for example, in the horizontal direction near a car guide rail or a counterweight guide rail.

The connecting device 7 can suspend the first lifting body 1. The connecting device 7 is, for example, a device having a lifting function such as a chain block or a winch. In the state where the first lifting body 1 is suspended by the connecting device 7, the load of the first lifting body 1 is supported by the machine room unit 3. In the state where the first elevator 1 is connected to the machine room unit 3, the center of gravity of the entire machine room unit 3 is affected by the mass of the first elevator 1 and the position of the center of gravity of the entire machine room unit 3 is closer to the first elevator 1 side than before the connection. Stop by.

The rope gripping device 10 is capable of gripping the rope 5 by sandwiching it, for example. The rope gripping device 10 can simultaneously grip at least the same number of ropes 5 as the number of rope drums 6.

The direction changing device is provided, for example, above the hoisting machine. The direction changing device is fixed to the framework of the machine room unit 3, for example.

The first direction change pulley 8 is provided, for example, in the vicinity of the rope drum 6, and first receives the rope 5 fed from the rope drum 6. The first direction change pulley 8 may be arranged anywhere above, below, to the left or to the rope drum 6. As an example, FIG. 1 shows a case where the first direction changing pulley 8 is arranged above the rope drum 6. The role of the first direction change pulley 8 is to change the amount of movement of the rope 5 that reciprocates in the axial direction of the rope drum 6 when being discharged from the rope drum 6 while changing the direction of the rope 5. It is to guide the rope 5 so as not to interfere with other devices by suppressing it near.

The 2nd direction change pulley 9 is installed in the position which overlaps with the 1st lift 1 when seeing from the up-down direction, for example. The second direction changing pulley 9 is installed, for example, in the horizontal direction between a pair of car guide rails or between a pair of counterweight guide rails. The role of the second direction change pulley 9 is to determine the position where the rope 5 is vertically lowered toward the suspension vehicle of the first lifting body 1 while changing the direction of the rope 5. The second direction change pulley 9 is mainly arranged above the suspension vehicle of the first lift 1. If the second direction changing pulley 9 can also serve as the first direction changing pulley 8, the first direction changing pulley 8 may not be provided.

Each of the ropes 5 fed from the plurality of rope drums 6 is first wound around the direction changing device, for example. Each rope 5 is, for example, wound around the first direction change pulley 8 and then wound around the second direction change pulley 9. Each rope 5 is, for example, wound around the second direction changing pulley 9 and then passed through the rope gripping device 10. Each rope 5 is, for example, passed through a rope gripping device 10 and then wound around a suspension vehicle of the first lift 1. Each rope 5 is, for example, wound around the suspension vehicle of the first lift 1 and then wound around the sheave 4 of the hoisting machine. Each rope 5 is, for example, wound around the sheave 4 of the hoisting machine and then wound around the suspension vehicle of the second lifting body 2. Each rope 5 is connected to the machine room unit 3 after being wound around a suspension vehicle of the second lifting body 2, for example.

The terminals of each rope 5 are connected to the machine room unit 3 by individual shackles, for example. The shackle-side rope terminal 11 is located at the lower end of the machine room unit 3, for example.

The rope gripping device 10 is capable of gripping the rope 5 located between the rope drum 6 and the suspension car of the first lifting body 1. When the first lifting body 1 is not suspended by the connecting device 7 and the rope 5 is gripped by the rope gripping device 10, the rope 5 is loaded with the load of the first lifting body 1 and the second lifting body 2. It When the hoisting machine is driven in this state, the first elevator 1 and the second elevator 2 move in a range below the machine room unit 3 in the building under construction. This range is the current elevating stroke of the first elevating body 1 and the second elevating body 2. The hoisting machine is controlled by, for example, a control panel mounted in the machine room unit 3. The elevating process of the first elevating body 1 and the second elevating body 2 is extended according to the progress of the construction work.

When extending the elevating stroke, the load of the first elevating body 1 is supported by the machine room unit 3 via the connecting device 7. When extending the elevating stroke, the load of the second elevating body 2 is supported in the lower part of the hoistway. That is, extension of the lifting stroke is performed in a state where the load of the first lifting body 1 and the second lifting body 2 is not loaded on the rope 5. The extension of the elevating/lowering process is performed by pulling up the machine room unit 3 and the first elevating/lowering body 1 by using the lifting device 12 in a state where the rope 5 is not grasped by the rope grasping device 10. The lifting device 12 is, for example, a tower crane or a winch.

For safety of work, the lifting of the machine room unit 3 and the first elevating/lowering body 1 needs to be performed in a state where the hoisting rope of the hoisting device 12 captures the position of the center of gravity of the hoisting target. In the state where the first lifting body 1 is connected, the center of gravity of the machine room unit 3 approaches the first lifting body 1 side, so the hanging rope of the lifting device 12 is provided, for example, near the upper portion of the first lifting body 1. Connect to the suspension base.

In the example shown in FIG. 1, when the machine room unit 3 and the first lifting body 1 are pulled up by the lifting device 12, the rope 5 is paid out from the rope drum 6. The second lifting body 2 maintains a state of being supported at the lower part of the hoistway. The length of the rope 5 located below the machine room unit 3 increases according to the amount of rise of the machine room unit 3 and the first lifting body 1. The machine room unit 3 that has reached the destination floor is fixed. As a result, the lifting stroke of the first lifting body 1 and the second lifting body 2 is extended.

Twist may occur in the rope 5 fed from the rope drum 6. If the shackle side rope terminal 11 is rotated while the load of the first lifting body 1 and the second lifting body 2 is not loaded on the rope 5, the range from the shackle side rope terminal 11 to the sheave 4 of the hoisting machine The twist of the rope 5 located at is eliminated. Since most of the rope 5 unwound from the rope drum 6 is located between the shackle side rope terminal 11 and the sheave 4 of the hoisting machine, by twisting the shackle side rope terminal 11, the rope 5 is twisted. It is fully resolved.

The unwinding of the rope 5 from the rope drum 6 and the untwisting of the rope 5 are repeatedly performed during the construction period.

FIG. 2 is a schematic diagram showing a second example of the lift extension work elevator in the first embodiment.

Hereinafter, the example shown in FIG. 2 will be described focusing on the differences from the example shown in FIG.

In the example shown in FIG. 2, a third direction changing pulley 13 which is a direction changing device is provided. The third direction change pulley 13 can be moved to a place other than the machine room unit 3. The third direction change pulley 13 is guided by, for example, at least one of a car guide rail and a counterweight guide rail. The third direction change pulley 13 can be fixed to at least one of the machine room unit 3 and the structure in the hoistway. The structure in the hoistway includes, for example, a car guide rail, a counterweight guide rail, a building-side structure under construction, and the like. If the third direction changing pulley 13 can also serve as the second direction changing pulley 9, the second direction changing pulley 9 may not be provided. The role of the third direction change pulley 13 is to raise the third direction change pulley 13 before the machine room unit 3 is pulled up while changing the direction of the rope 5, so that the rope 5 is moved from the rope drum 6 in advance. It is to be able to pull out the work.

In the example shown in FIG. 2, each rope 5 is, for example, wound around the first direction changing pulley 8 and then wound around the third direction changing pulley 13. Each rope 5 is passed through the rope gripping device 10 after being wound around the third direction change pulley 13, for example. The order in which the rope 5 is wound around the suspension vehicle of the first lifting body 1, the sheave 4 of the hoisting machine, and the suspension vehicle of the second lifting body 2 after being wound around the direction changing device is shown in FIG. It is similar to the example shown. However, the positional relationship between the first direction changing pulley 8 and the third direction changing pulley 13 in the depth direction of FIG. 2 is set so that the rope 5 and the hanging rope of the lifting device 12 do not come into contact with each other. In FIG. 2, as an example, a pulley is illustrated as a direction changing device that can move freely in the hoistway in the height direction and can be fixed to at least one of the machine room unit 3 and a structure in the hoistway. The turning device need not be a pulley structure as long as the turning device 5 can turn and the rope 5 can smoothly slide on the turning device.

In the example shown in FIG. 2, only the third direction change pulley 13 is lifted before the lifting device 12 lifts the machine room unit 3 and the first lifting body 1. The lifting of the third direction change pulley 13 is performed by another lifting device different from the lifting device 12. The other lifting device is, for example, a winch or the like installed above a position that is planned as the next fixed position of the machine room unit 3.

In the example shown in FIG. 2, when only the third direction change pulley 13 is pulled up while the rope 5 is gripped by the rope gripping device 10, the rope 5 is unwound from the rope drum 6. The pulled up third direction change pulley 13 is fixed to a structure in the hoistway, for example, near the next fixed position of the machine room unit 3. After that, the machine room unit 3 and the first elevating body 1 are pulled up by using the lifting device 12 in a state where the rope 5 is not grasped by the rope grasping device 10, so that the elevating stroke is extended. During the lifting operation of the machine room unit 3 and the first lifting/lowering body 1, for example, it is preferable to prevent the rope drum 6 from rotating.

In the example shown in FIG. 2, the twist generated in the rope 5 fed from the rope drum 6 is eliminated in the same manner as in the example shown in FIG.

FIG. 3 is a schematic diagram showing a third example of the lift extension work elevator in the first embodiment.

Hereinafter, the example shown in FIG. 3 will be described focusing on the differences from the example shown in FIG. 1 or FIG.

In the example shown in FIG. 3, in the machine room unit 3, in addition to the second direction changing pulley 9 and the third direction changing pulley 13, a fourth direction changing pulley 14 as a direction changing device for guiding the route of the rope 5 is provided. Is provided. In FIG. 3, as an example, a pulley is illustrated as a direction changing device for guiding the route of the rope 5, but the rope 5 can change the direction and the rope 5 can slide smoothly on the direction changing device. If so, the turning device need not be a pulley structure. The role of the fourth direction change pulley 14 is to arrange the third direction change pulley 13 at a position closer to the center of the second lift 2 than the center of the first lift 1 in the horizontal direction. By providing the fourth direction change pulley 14, it is possible to secure a space above the first elevator 1 in the space above the machine room unit 3, so that the third direction change pulley 13 and the rope 5 and the lift Interference with the suspension rope of the device 12 can be reliably avoided.

In the example shown in FIG. 3, the fourth direction change pulley 14 is fixed to the framework of the machine room unit 3, for example. The fourth direction changing pulley 14 is provided so that the rope 5 between the third direction changing pulley 13 and the second direction changing pulley 9 passes through. The fourth direction change pulley 14 is provided, for example, on the second lifting body 2 side with respect to the suspension rope of the lifting device 12.

By providing the third direction changing pulley 13, if the rope 5 does not interfere with other equipment of the machine room unit 3 without the first direction changing pulley 8, the first direction changing pulley 8 is not provided. May be. FIG. 3 illustrates a case where the first direction changing pulley 8 is not provided.

In the example shown in FIG. 3, each rope 5 unreeled from a plurality of rope drums 6 is wound around the third direction changing pulley 13 and then wound around the fourth direction changing pulley 14, for example. Each rope 5 is, for example, wound around the fourth direction changing pulley 14 and then wound around the second direction changing pulley 9. Each rope 5 is, for example, wound around the second direction changing pulley 9 and then passed through the rope gripping device 10. Each rope 5 is, for example, passed through a rope gripping device 10 and then wound around a suspension vehicle of the first lift 1. Each rope 5 is, for example, wound around the suspension vehicle of the first lift 1 and then wound around the sheave 4 of the hoisting machine. Each rope 5 is, for example, wound around the sheave 4 of the hoisting machine and then wound around the suspension vehicle of the second lifting body 2. Each rope 5 is connected to the machine room unit 3 after being wound around a suspension vehicle of the second lifting body 2, for example.

In the example shown in FIG. 3, only the third direction change pulley 13 is lifted before the lifting device 12 lifts the machine room unit 3 and the first elevator 1. The lifting of the third direction change pulley 13 is performed by another lifting device as in the example shown in FIG.

In the example shown in FIG. 3, when only the third direction change pulley 13 is pulled up while the rope 5 is gripped by the rope gripping device 10, the rope 5 is paid out from the rope drum 6. The pulled up third direction change pulley 13 is fixed to a structure in the hoistway, for example, near the next fixed position of the machine room unit 3. After that, the machine room unit 3 and the first elevating body 1 are pulled up by using the lifting device 12 in a state where the rope 5 is not grasped by the rope grasping device 10, so that the elevating stroke is extended. During the lifting operation of the machine room unit 3 and the first elevating/lowering body 1, for example, it is preferable to suppress the rotation of the rope drum 6.

In the example shown in FIG. 3, the twist generated in the rope 5 fed from the rope drum 6 is eliminated in the same manner as in the example shown in FIG.

FIG. 4 is a front view showing a structural example of the machine room unit in the first embodiment.

FIG. 4 shows an example of the structure of the machine room unit 3 of the lift extension work elevator shown in FIG.

In the example shown in FIG. 4, on the upper part of the machine room unit 3, a direction changing device and six rope drums 6 are arranged. The three rope drums 6 (not shown) are arranged on the inner side of each of the three rope drums 6 shown. A hoisting machine 15 and a shackle-side rope terminal 11 are arranged below the machine room unit 3. A rope gripping device 10 and a control board 16 are arranged in an intermediate portion in the vertical direction of the machine room unit 3. The control panel 16 is electrically connected to, for example, the hoisting machine 15 and a car device (not shown).

In the example shown in FIG. 4, the machine room unit 3 is not provided with the first direction changing pulley 8 of the direction changing device. Each of the ropes 5 fed from the plurality of rope drums 6 is first wound around the second direction changing pulley 9. Each of the ropes 5 is wound around the second direction change pulley 9, and then passes through the rope gripping device 10 toward the suspension vehicle of the first elevator 1.

In the example shown in FIG. 4, a lifting hoist 17 for lifting is provided at the upper end of the machine room unit 3. The installation position of the lifting hoisting base 17 is arranged near the top of the first lifting body 1 so as to correspond to the position close to the center of gravity of the machine room unit 3 in the state where the first lifting body 1 is connected. The hoisting rope 17 of the lifting device 12 is connected to the lifting hoist 17.

FIG. 5 is a front view showing another structural example of the machine room unit in the first embodiment.

FIG. 5: has shown an example of the structure of the machine room unit 3 of the lift extension work elevator shown in FIG. Hereinafter, the example shown in FIG. 5 will be described focusing on the differences from the example shown in FIG.

In the example shown in FIG. 5, a first direction changing pulley 8, a second direction changing pulley 9, a third direction changing pulley 13 and a fourth direction changing pulley 14 are arranged above the machine room unit 3. The third direction change pulley 13 can be fixed to the machine room unit 3 and the guide rail for the second lift 2 as well.

In the example shown in FIG. 5, the first direction changing pulley 8 is installed near the rope drum 6. The third direction changing pulley 13 is arranged at the same height as the first direction changing pulley 8 or above it. The fourth direction changing pulley 14 is arranged at the same height as the first direction changing pulley 8 or below the same. The second direction change pulley 9 is installed near a pair of guide rails for the first lifting body 1. The second direction changing pulley 9 is arranged at the same height as the first direction changing pulley 8 or below the same.

In the example shown in FIG. 5, each rope 5 unreeled from a plurality of rope drums 6 is wound around the first direction changing pulley 8 and then around the third direction changing pulley 13. Each rope 5 is wound around the third direction changing pulley 13 and then wound around the fourth direction changing pulley 14. Each rope 5 is wound around the fourth direction changing pulley 14 and then wound around the second direction changing pulley 9. Each of the ropes 5 is wound around the second direction change pulley 9, and then passes through the rope gripping device 10 toward the suspension vehicle of the first elevator 1.

In the example shown in FIG. 5, each rope 5 is wound around the fourth direction changing pulley 14 and the second direction changing pulley 9, so that the inside of the machine room unit 3 in the range where the first lifting body 1 exists in the horizontal direction. Each rope 5 is located at. Even if the third direction change pulley 13 is pulled up, the ropes 5 do not pass directly above the lifting hoisting base 17.

In the example shown in FIG. 5, the ropes 5 are wound around the first direction changing pulley 8 before the third direction changing pulley 13, so that even if the third direction changing pulley 13 is pulled up, a plurality of rope drums The angle of each rope 5 unreeled from 6 is kept constant.

According to the first embodiment described above, the machine room unit 3 mounts the hoisting machine 15 and the rope drum 6. The first lifting body 1 can support the load by the machine room unit 3. The second lifting body 2 can support a load in the lower part of the hoistway. The rope 5 unreeled from the rope drum 6 mounted in the machine room unit 3 is wound around the suspension vehicle of the first lifting body 1 and then wound around the sheave 4 of the hoisting machine 15, and the hoisting machine 15 After being hung on the sheave 4 of the vehicle, it is hung on the suspension car of the second lifting body 2 and then connected to the machine room unit 3 after being hung on the suspension car of the second lifting body 2. For this reason, it is possible to eliminate the twist of the rope of the lift for extension work type construction.

Further, the machine room unit 3 is provided with a third direction change pulley 13 which is movable in the height direction in the hoistway. The third direction changing pulley 13 can be fixed to, for example, the machine room unit 3 or the structure in the hoistway. The rope 5 delivered from the rope drum 6 is, for example, wound around the third direction changing pulley 13 and then wound around the suspension vehicle of the first lifting body 1. In this case, the rope 5 can be paid out in advance from the rope drum 6 before the machine unit 3 and the first lifting body 1 are pulled up by the lifting device 12. As a result, since the pulling-out direction of the rope 5 is against the weight, if the rope 5 is fixed by the rope gripping device 10, the rope 5 is unwound excessively from the rope drum 6 due to its own weight. Is unlikely to occur and the rope can be pulled out safely.

Further, in the machine room unit 3, for example, a fourth direction changing pulley 14 for changing the direction of the rope 5 and a second direction changing pulley for guiding the rope 5 to the position where the first lifting body 1 is suspended. 9 is provided. The third direction change pulley 13 is arranged, for example, on the side opposite to the first elevator 1 when viewed from the center of the machine room unit 3 in the horizontal direction. The rope 5 unreeled from the rope drum 6 is, for example, wound around the third direction changing pulley 13 and then passes through the fourth direction changing pulley 14 and further passes through the second direction changing pulley 9 and then the first direction changing pulley 9. It is wound around the suspension car of the lifting body 1. As a result, the third direction change pulley 13 is not located above the machine room unit 3 in the range in which the first lifting body 1 exists in the horizontal direction. In this case, it is possible to reliably avoid the suspension rope of the lifting device 12 from interfering with the rope 5.

Further, the first elevating/lowering body 1 may be, for example, a car that moves along a car guide rail, or a counterweight that moves along a counterweight guide rail. The second elevating body 2 is a counterweight when the first elevating body 1 is a car, and is a car when the first elevating body 1 is a counterweight. On the other hand, by using the first lifting body 1 as a car and the second lifting body 2 as a counterweight, a car that is lighter than the counterweight is connected to the machine room unit 3, so the lifting device 12 The load on the can be reduced.

INDUSTRIAL APPLICABILITY The present invention can be used for an elevator for work height extension type construction.

1 1st raising/lowering body 2 2nd raising/lowering body 3 Machine room unit 4 Sheave 5 Rope 6 Rope drum 7 Connecting device 8 1st direction change pulley 9 2nd direction change pulley 10 Rope gripping device 11 Shackle side rope terminal 12 Lifting device 13 3rd direction change pulley 14 4th direction change pulley 15 Hoisting machine 16 Control panel 17 Lifting hoist

Claims (8)

A hoistway can be raised and lowered, and a machine room unit equipped with a hoist,
A first elevating body capable of elevating the hoistway and supporting a load by the machine room unit;
A second elevating body capable of elevating the hoistway and capable of supporting a load in the lower part of the hoistway;
Equipped with
The rope unwound from the rope drum mounted in the machine room unit is wound around the suspension car of the first lifting body via at least one direction changing device and then wound around the sheave of the hoisting machine. After being hung up and wound around the sheave of the hoist, it is hung around the suspension car of the second elevating body, and after being hung around the suspension car of the second elevating body, connected to the machine room unit. ,
Wherein at least one of the turning device, the machine room unit and independently hoistway capable of moving the height direction freely, the machine room unit and at least one fixable movable structure hoistway Elevator for construction work with extension of lift, which is a type change device . The lift extension work elevator according to claim 1, wherein at least one of the direction changing devices has a structure fixed to a framework of the machine room unit. The lift extension work elevator according to claim 1, wherein the movable turning device has a structure guided by at least one of the guide rails for the second lifting body and the guide rails for the first lifting body. .. The rope wound around the movable direction changing device passes through at least one other direction changing device before reaching the suspension vehicle of the first lifting body from the movable direction changing device. Lifting type construction elevator described in 1. The movable direction changing device is arranged at a position closer to the center of the second elevating body than the center of the first elevating body in the horizontal direction,
The rope wound around the movable direction changing device passes through at least two other direction changing devices before reaching the suspension vehicle of the first lifting body from the movable direction changing device. Lifting type construction elevator described in 1. The movable diverting wound around the rope in the apparatus, during a period from the movable diverting device until it reaches the rope drum, lift the extension of claim 1 through at least one other direction changing device Elevator for construction work. The first elevating body is a car that moves along a car guide rail,
7. The lifting extension work elevator according to claim 1, wherein the second elevating body is a counterweight that moves along a guide rail for a counterweight. The first lifting body is a counterweight that moves along a counterweight guide rail.
The lift extension work elevator according to any one of claims 1 to 6, wherein the second elevating body is a car that moves along a car guide rail.

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