CN117279855A - Elevator and lifting travel extension method - Google Patents

Abstract

The invention provides an elevator and a lifting travel extension method capable of further improving the upper end position of the lifting travel of a car. The elevator is provided with: a first elevating path unit provided from a lower part of the building to a roof surface inside the building and forming a first elevating path space extending to the roof surface inside; a machine room unit having a hoist for lifting and lowering the car via a rope, the machine room unit being movable in an up-down direction in a first hoistway space of a first hoistway unit; and a second hoistway unit provided above the roof surface at an upper end of the first hoistway unit, and forming a second hoistway space inside, the second hoistway space being connected to an upper end of the first hoistway space in such a manner that the machine room unit is movable in an up-down direction and extending to a position above the roof surface.

Description

Elevator and lifting travel extension method

Technical Field

The present invention relates to an elevator and a lift stroke extension method.

Background

Patent document 1 discloses a method for extending the lifting stroke of an elevator. According to this lifting/lowering stroke extension method, the machine room is lifted upward in the lifting/lowering path, whereby the stroke of lifting/lowering the car of the elevator can be extended according to the progress of the building construction.

Prior art literature

Patent literature

Patent document 1: japanese patent publication No. 59-034633

Disclosure of Invention

Problems to be solved by the invention

However, in the lifting stroke extension method described in patent document 1, the car moves in a space below the machine room. The machine room is fixed to an upper portion of a building as an upper end of the elevating path. Therefore, the stroke of the lift car is limited at the upper part of the building.

The present disclosure has been made to solve the above-described problems. The invention aims to provide an elevator and a lifting travel extension method capable of further improving the upper end position of a lifting travel of a car.

Means for solving the problems

An elevator of the present invention includes: a first elevating path unit provided from a lower part of a building to a roof surface inside the building and forming a first elevating path space extending to the roof surface inside; a machine room unit having a hoist for lifting and lowering a car via a rope, the machine room unit being movable in an up-down direction in the first hoistway space of the first hoistway unit; and a second hoistway unit that is provided above the roof surface at an upper end of the first hoistway unit, and that forms a second hoistway space inside, the second hoistway space being connected to an upper end of the first hoistway space so as to be movable in an up-down direction of the machine room unit and extending to a position above the roof surface.

The lift stroke extension method of the present invention comprises: a setting step of setting a first hoistway unit inside a building, the first hoistway unit forming a first hoistway space of an elevator extending to a roof surface of the building; a fixing step of fixing a machine room unit having a hoist for lifting and lowering a car via a rope to the inside of the first hoistway unit; a connection step of connecting a second hoistway unit to an upper end of the first hoistway unit so that a second hoistway space formed inside the second hoistway unit that is located above the roof surface is connected to the first hoistway space; and a lifting step of lifting the machine room unit to a height above the roof surface in the first and second elevating path spaces in the lifting step, the lifting step being performed after the connecting step.

Effects of the invention

According to the present disclosure, the second elevating path space is formed at a position above the roof surface of the building. At least a part of the machine room units can be moved to a position above the roof surface. Therefore, the upper end position of the lift stroke of the car can be further increased.

Drawings

Fig. 1 is an overall view of an elevator in embodiment 1.

Fig. 2 is an overall view of the elevator in embodiment 1 in a state in which the second hoistway means is not provided.

Fig. 3 is an overall view of the elevator in embodiment 1 in a state where the second hoistway means is provided.

Fig. 4 is an overall view showing a first example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 5 is an overall view showing a first example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 6 is an overall view showing a second example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 7 is an overall view showing a third example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 8 is a diagram showing a main part of an elevator in embodiment 2.

Fig. 9 is a diagram showing a main part of an elevator in embodiment 2.

Fig. 10 is a diagram showing a modification of the main part of the elevator in embodiment 2.

Fig. 11 is a diagram showing a modification of the main part of the elevator in embodiment 2.

Fig. 12 is a diagram showing a main part of an elevator in embodiment 3.

Fig. 13 is a diagram showing a state in which the elevator in embodiment 3 is not provided with the second hoistway unit.

Fig. 14 is a diagram showing a state in which the elevator in embodiment 3 is provided with the second hoistway unit.

Fig. 15 is a diagram showing a state in which the rope of the elevator in embodiment 3 is released.

Fig. 16 is a diagram showing a state in which the hoistway unit of the elevator in embodiment 3 is lifted.

Fig. 17 is a diagram showing a state in which the upper sheave of the elevator in embodiment 3 is lowered.

Fig. 18 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3.

Fig. 19 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3.

Fig. 20 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3.

Detailed Description

The manner in which the present disclosure is practiced is illustrated in the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated description of this portion is appropriately simplified or omitted.

Embodiment 1.

Fig. 1 is an overall view of an elevator in embodiment 1.

As shown in fig. 1, for example, an elevator 1 is provided inside a building 2 in a building. The elevator 1 includes a first hoistway unit 3, a second hoistway unit 4, a machine room unit 5, a hoist 6, ropes 7, a car 8, a counterweight 9, and a control device 10.

The first elevating path unit 3 penetrates each floor of the building 2 in the building. The first elevating path unit 3 is provided from the lower end of the building 2 to the roof surface of the building 2. For example, the first elevating path unit 3 is a rectangular parallelepiped frame formed by combining steel frames. The first elevating path unit 3 forms a first elevating path space 3a inside. The first hoistway space 3a is formed from the lower end of the first hoistway unit 3 to the upper end. The first hoistway unit 3 includes a first car rail 11, a first counterweight rail 12, and a plurality of first hoistway doors 13.

The first car rail 11 is provided inside the first hoistway unit 3 along the longitudinal direction of the first hoistway space 3a as the vertical direction. The first car rail 11 is provided from the lower end to the upper end of the first hoistway unit 3.

The first counterweight rail 12 is provided inside the first elevating path unit 3 along the longitudinal direction of the first elevating path space 3a as the vertical direction. The first counterweight rail 12 is provided from the lower end to the upper end of the first hoistway unit 3.

A plurality of first hall doors 13 are provided to the first hoistway unit 3. A plurality of first hall doors 13 are provided at each floor of the building 2.

For example, the second hoistway unit 4 is a rectangular parallelepiped frame formed by combining steel frames. For example, the second elevating path unit 4 has a height corresponding to the amount of two floors of the building 2. The second elevating path unit 4 is provided above the first elevating path unit 3. The lower end of the second elevating path unit 4 is located at the same height as the roof surface of the building 2. The second hoistway unit 4 internally forms a second hoistway space 4a.

The second hoistway space 4a is formed from the upper end of the second hoistway unit 4 to the lower end. The lower end of the second elevating path space 4a is connected to the upper end of the first elevating path space 3a. The second hoistway space 4a and the first hoistway space 3a form a hoistway space a extending from the lower end of the building 2 to a position above the roof surface.

The second hoistway unit 4 includes a second car rail 14, a second counterweight rail 15, and a plurality of second hoistway doors 16. In embodiment 1, the second hoistway unit 4 includes 2 second hoistway doors 16.

The second car rail 14 is provided inside the second hoistway unit 4 along the longitudinal direction of the second hoistway space 4a as the vertical direction. The second car rail 14 is provided from the lower end to the upper end of the second hoistway unit 4. The lower end of the second car rail 14 is connected to the upper end of the first car rail 11.

The second counterweight rail 15 is provided inside the second elevating path unit 4 along the longitudinal direction of the second elevating path space 4a as the vertical direction. The second counterweight rail 15 is provided from the lower end to the upper end of the second elevating path unit 4. The lower end of the second counterweight track 15 is connected to the upper end of the first counterweight track 12.

A plurality of second hoistway doors 16 are provided in the second hoistway unit 4. For example, in the up-down direction, the distances between the plurality of second hall doors 16 are equal to the distances between the plurality of first hall doors 13.

For example, the machine room unit 5 has an outer shape of a substantially rectangular parallelepiped. In the horizontal projection plane, the outer shape of the machine room unit 5 is smaller than the outer shape of the first elevating path space 3a and the outer shape of the second elevating path space 4a. The machine room unit 5 is provided so as to be movable in the up-down direction inside the first hoistway space 3a and the second hoistway space 4a. The machine room unit 5 can be fixed to the inside of the first hoistway unit 3 or the second hoistway unit 4 using a fixing member. In fig. 1, the machine room unit 5 is fixed to an upper portion of the second elevating path space 4a. For example, the machine room unit 5 is provided so as to be accessible via a machine room door and a second hall door 16, not shown. The machine room unit 5 is provided with a lifting hook 17.

The lifting hook 17 is provided on the upper surface of the machine room unit 5.

The hoist 6 is provided inside the machine room unit 5. The rope 7 is wound around the hoist 6. The car 8 is suspended as a lifting body at one end of the rope 7 in the hoistway space a. The car 8 is provided with a car door 8a. The car door 8a is provided in an orientation facing any one of the plurality of first hall doors 13 and the plurality of second hall doors 16. The counterweight 9 is suspended as a lifting body at the other end of the rope 7 in the elevating path space a. The control device 10 is provided inside the machine room unit 5. The control device 10 controls the operation of the car 8 by controlling the hoisting machine 6.

When the control device 10 rotates the hoist 6, the rope 7 moves following the rotation of the hoist 6. The car 8 is guided by the first car rail 11 or the second car rail 14 by following the movement of the rope 7, and is lifted and lowered. The counterweight 9 is guided by the first counterweight rail 12 or the second counterweight rail 15 by following the movement of the rope 7, and is lifted and lowered in the opposite direction to the car 8. The car 8 stops at any one of the plurality of first hall doors 13 and the plurality of second hall doors 16. The elevator 1 transports persons, objects, etc. to floors and roofs of a building 2 in the building via a car 8.

Next, a method of setting the second elevating path unit 4 will be described with reference to fig. 2 and 3.

Fig. 2 is an overall view of the elevator in embodiment 1 in a state in which the second hoistway means is not provided. Fig. 3 is an overall view of the elevator in embodiment 1 in a state where the second hoistway means is provided.

The vertical range in which the car 8 can move, that is, the lift stroke is extended by a lift stroke extension method. The lift stroke extension method is applied to the elevator 1 in which the installation step of installing the first hoistway unit 3 inside the building 2 and the fixing step of fixing the machine room unit 5 inside the first hoistway unit 3 are performed. The lift stroke extension method includes a lifting step of lifting the machine room unit 5 after the setting step, the fixing step, and the connecting step of connecting the second lift path unit 4 to the upper end of the first lift path unit 3.

Fig. 2 shows an assembling process for assembling the second elevating path unit 4. The second elevating path unit 4 is assembled at a place different from the building 2. Specifically, the second hoistway unit 4 is mounted with the second car rail 14, the second counterweight rail 15, and the plurality of second hoistway doors 16 after the frames are assembled. Then, the second elevating path unit 4 is lifted by a crane 20 provided for the construction of the building 2.

Fig. 3 shows a connection step of connecting the second hoistway unit 4 to the upper end of the first hoistway unit 3. The second elevating path unit 4 is placed above the first elevating path unit 3 by the crane 20. The second hoistway unit 4 is connected to the first hoistway unit 3 by a connecting member not shown. At this time, the first car rail 11 is connected to the second car rail 14. The first counterweight track 12 is connected to the second counterweight track 15. The hoistway space constituted by the first hoistway space 3a extends upward by being connected to the second hoistway space 4a.

Next, an example of a lifting process of the lifting mechanism chamber unit 5 will be described with reference to fig. 4 and 5.

Fig. 4 is an overall view showing a first example of a lifting process for lifting the machine room unit of the elevator in embodiment 1. Fig. 5 is an overall view showing a first example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 4 shows the machine room unit 5 before being lifted upward. The machine room unit 5 is located at the same height as the upper end portion of the first elevating path space 3a, i.e., the uppermost floor of the building 2. In this case, the car 8 is lifted and lowered from the lowest floor of the building 2 to the next floor of the uppermost floor.

After the connection process of the second elevating path unit 4 is completed, the hook of the crane 20 is engaged with the lifting hook 17 of the machine room unit 5. Then, the crane 20 lifts the machine room unit 5 upward from the first hoistway space 3a of the first hoistway unit 3.

Fig. 5 shows the machine room unit 5 lifted to a position above the uppermost floor of the building 2 and the roof surface of the building 2 by the step of lifting the machine room unit 5. In this case, the lifting stroke is extended by extending the rope 7. Specifically, the car 8 can be lifted and lowered from the floor 1 to the uppermost floor by replacing the ropes 7 with longer ropes 7.

Next, another example of the position where the machine room unit 5 is lifted will be described with reference to fig. 6 and 7.

Fig. 6 is an overall view showing a second example of a lifting process for lifting the machine room unit of the elevator in embodiment 1. Fig. 7 is an overall view showing a third example of a lifting process for lifting the machine room unit of the elevator in embodiment 1.

Fig. 6 shows a state in which the machine room unit 5 is lifted up to the same position as fig. 1, that is, the upper part of the second elevating path unit 4. In this case, the car 8 can be moved to the level of the roof of the building 2 in the building. A person can move by riding the car 8 via the car door 8a and the second hall door 16 to a hall located at a floor of a roof of the building 2 in the building.

Fig. 7 shows a state in which the machine room unit 5 is lifted up to a position above the second elevating path unit 4. In this case, the car 8 can be moved to a position higher than the roof of the building 2 in the building.

According to embodiment 1 described above, elevator 1 includes first hoistway unit 3, machine room unit 5, and second hoistway unit 4. The elevator 1 includes a second hoistway space 4a in which the machine room unit 5 can move and which extends to a position above the roof surface of the building 2. Therefore, the machine room unit 5 for lifting and lowering the car 8 can be moved to a position above the roof surface. In this case, the lift stroke of the car 8 can be extended to a position higher than that in the case where the machine room unit 5 is present below the roof surface. As a result, the upper end position of the lift stroke of the car can be further increased.

The second hoistway unit 4 is coupled to the upper end of the first hoistway unit 3 after assembly. At this time, the second hoistway space 4a is connected to the first hoistway space 3a. That is, there is no need to perform the construction of assembling the elevating road above the existing elevating road as in the conventional construction of extending the elevating road. Therefore, the hoistway space can be extended in a short time. For example, the construction for extending the hoistway space can be completed at night. In this case, it is not necessary to stop the operation of the elevator 1 in the daytime in order to perform the construction for extending the hoistway space. The elevator 1 can be operated in the building 2 in the building during the day where the demand for transport services is highest. As a result, people, objects, and the like can be efficiently transported.

The second hoistway unit 4 is connected to the upper end of the first hoistway unit 3 after the second hoistway door 16 is attached. A person passes through the second hall door 16 from the hall on the roof of the building 2 and rides on the car 8 existing in the second hoistway space 4a. Therefore, the period of the construction for extending the hoistway space can be shortened.

The second hoistway unit 4 is connected to the upper end of the first hoistway unit 3 after the second car rail 14 is attached. Therefore, when the hoistway space is extended, the second car rail 14 can be extended only by connecting the first car rail 11 to the second car rail.

The machine room unit 5 is fixed to the second hoistway unit 4 at a position existing above the car 8 when the car 8 rises to the roof of the building 2. Therefore, the elevator 1 can efficiently transport people, objects, and the like to the floors and roofs of the upper floors of the building 2 that are most required to be worked in the building construction of the building 2.

In the lifting stroke extension method, the lifting step is performed after the setting step, the fixing step, and the connecting step. Therefore, the machine room unit 5 can be moved to a position above the roof surface. In this case, the lift stroke of the car 8 can be extended to a position higher than that in the case where the machine room unit 5 is present below the roof surface. As a result, the upper end position of the lift stroke of the car can be further increased.

In the lift stroke extension method, the connecting step is performed after the assembling step. In the coupling step, the second hoistway unit 4 assembled in advance is coupled to the first hoistway unit 3, thereby completing the construction. Therefore, the construction for extending the lifting stroke can be completed in a short time.

The first elevating path unit 3 may be an inner wall of the building 2. In this case, the first hoistway space 3a may be formed by the inner wall of the building 2. A plurality of first hall doors 13 may also be installed at the inner wall of the building 2.

The height of the second elevating path unit 4 may be equal to or greater than the height corresponding to the amount of the first floor of the building 2.

Embodiment 2.

Fig. 8 is a diagram showing a main part of an elevator in embodiment 2. Fig. 9 is a diagram showing a main part of an elevator in embodiment 2. The same or corresponding parts as those of embodiment 1 are denoted by the same reference numerals. The description of this portion is omitted.

As shown in fig. 8, in embodiment 2, the second elevating path unit 4 includes a first roof 21 and a winch 22.

The first roof 21 is provided at the upper end of the second elevating path unit 4. The first roof 21 closes the upper portion of the second elevating path unit 4 in such a manner that rainwater does not enter the second elevating path space 4a.

The winch 22 is provided at an upper portion of the second elevating path unit 4.

The shielding floor 23 closes the upper end of the first elevating path unit 3. The shielding floor 23 has such a strength that an object falling from above does not fall into the first hoistway space 3a below. The shielding floor 23 is provided in such a manner that it can be easily decomposed after being provided.

In the lifting/lowering stroke extension construction, a step of disposing the shielding floor 23 on the upper end of the first lifting/lowering path unit 3 is performed before the second lifting/lowering path unit 4 is placed above the first lifting/lowering path unit 3. After the shielding floor 23 is provided, a step of connecting the second hoistway unit 4 to the first hoistway unit 3 and a step of attaching the first roof 21 and the winch 22 to the second hoistway unit 4 are performed. Then, a process of removing the shielding floor 23 by decomposing the shielding floor 23 and carrying out from the second hall door 16 is performed.

As shown in fig. 9, after the shielding floor 23 is removed, a process of lifting the machine room unit 5 is performed. At this time, the machine room unit 5 is lifted by the winch 22.

According to embodiment 2 described above, the second elevating path unit 4 has a winch 22. The winch 22 lifts the machinery space unit 5. Therefore, the crane 20 for construction is not required for lifting the machine room unit 5. The crane 20 for construction can be used for transporting other building materials. As a result, the efficiency of the building construction of the building 2 can be improved. In addition, the machine room unit 5 can be lifted up without the crane 20 for construction having the ability to lift up the machine room unit 5.

The shielding floor 23 may be provided at the upper end of the first hoistway unit 3 before the second hoistway unit 4 is connected to the first hoistway unit 3. The shielding floor 23 separates the space above the first hoistway space 3a from the first hoistway space 3a, thereby suppressing the object from falling into the first hoistway space 3a. Therefore, the car 8 can safely move in the first hoistway space 3a regardless of the work content such as the work of connecting the second hoistway unit 4. As a result, for example, the operation of connecting the second elevating path unit 4 to the first elevating path unit 3 can be performed in parallel with other building operations during the daytime.

Next, a modification of the second elevating path unit 4 will be described with reference to fig. 10 and 11.

Fig. 10 is a diagram showing a modification of the main part of the elevator in embodiment 2. Fig. 11 is a diagram showing a modification of the main part of the elevator in embodiment 2.

As shown in fig. 10, the second elevating path unit 4 includes a second roof 24.

The second roof 24 is longer in the up-down direction than the first roof 21 not shown in fig. 10.

The winch 22 is provided inside the second roof 24, and is thus provided above the second hoistway space 4a.

Fig. 11 shows a state in which the machine room unit 5 is lifted by the winch 22. The machine room unit 5 is lifted up to the upper portion of the second elevating path unit 4. When the machine room unit 5 is present at this position, the car 8 can move to the roof of the building 2 as the lower part of the second hoistway unit 4.

According to the modification of embodiment 2 described above, the winch 22 can lift the machine room unit 5 to a position above the car 8 that is in a state of being lifted up to the roof of the building 2.

Embodiment 3.

Fig. 12 is a diagram showing a main part of an elevator in embodiment 3. The same or corresponding parts as those of embodiment 1 or embodiment 2 are denoted by the same reference numerals. The description of this portion is omitted.

As shown in fig. 12, in embodiment 3, the mode of the elevator 1 is 2:1 roping ratio (roping). The elevator 1 includes a car sheave 8b, a counterweight sheave 9a, a rope paying-out device 31, an upper sheave 32, a first sheave block 33, and a second sheave block 34.

The car hanging wheel 8b is provided at the upper part of the car 8. The counterweight sheave 9a is provided at the upper portion of the counterweight 9.

The rope paying-out device 31 is provided inside the machine room unit 5. The rope paying-out device 31 has a drum around which the rope 7 is wound. The rope paying-out device 31 is provided so that the rope 7 can be lengthened by paying out the rope 7. The rope paying-out device 31 is provided so that the rope 7 can be fixed by holding the rope 7.

The upper pulley 32 is provided so as to be movable in the up-down direction.

The first pulley table 33 is provided inside the machine room unit 5. The first pulley block 33 is rotatably provided with the upper pulley 32 inside the machine chamber unit 5.

The second pulley table 34 is provided at an upper portion of the second elevating path unit 4. The second pulley table 34 is located above the first pulley table 33. The second pulley block 34 is rotatably provided with the upper pulley 32 inside the second elevating path unit 4.

One end of the rope 7 is fixed to the machine room unit 5 above the counterweight 9. The other end of the rope 7 is fixed to the rope paying-out device 31. The rope 7 is wound around the counterweight sheave 9a, the hoist 6, the car sheave 8b, and the upper sheave 32 in this order from one end to the other. At this time, the rope 7 is reversed at the counterweight sheave 9a, the hoist 6, the car sheave 8b, and the upper sheave 32, respectively. The rope 7 is fixed to the rope paying-out device 31 between the upper pulley 32 and the drum.

In embodiment 3, when the hoist 6 rotates, the rope 7 moves from one end of the rope 7 to the upper sheave 32. The car 8 and the counterweight 9 are lifted and lowered in opposite directions to each other following the movement of the rope 7.

Next, a method of extending the lifting stroke of the elevator 1 will be described with reference to fig. 13 to 17.

Fig. 13 is a diagram showing a state in which the elevator in embodiment 3 is not provided with the second hoistway unit. Fig. 14 is a diagram showing a state in which the elevator in embodiment 3 is provided with the second hoistway unit. Fig. 15 is a diagram showing a state in which the rope of the elevator in embodiment 3 is released. Fig. 16 is a diagram showing a state in which the hoistway unit of the elevator in embodiment 3 is lifted. Fig. 17 is a diagram showing a state in which the upper sheave of the elevator in embodiment 3 is lowered.

Fig. 13 shows a state in which the elevator 1 is operated inside the first hoistway unit 3. In this case, the upper pulley 32 is provided on the first pulley table 33.

Then, as shown in fig. 14, a preparation process is performed in which the second elevating path unit 4 is installed and the rope 7 is discharged.

In this case, the car 8 is suspended from the machine room unit 5 by a chain 35. The load of the car 8 is supported by the machine room unit 5. The counterweight 9 is fixed to the support table 36. The load of the counterweight 9 is supported by the support table 36.

Then, as shown in fig. 15, a process of extending the rope 7 is performed. The rope paying-out device 31 releases the fixation of the rope 7. Winch 22 lifts upper sheave 32. At this time, the rope paying-out device 31 pays out the rope 7 in conjunction with the operation of lifting the upper sheave 32. Specifically, the rope paying-out device 31 pays out the rope 7 so that the rope 7 is longer than the length required to extend the hoistway space. The upper sheave 32 is lifted up to the upper portion of the second elevating path unit 4, and then is set on the second sheave block 34.

Then, as shown in fig. 16, a lifting process of the lift mechanism chamber unit 5 is performed. The winch 22 is moved in the horizontal direction to a position where the machinery chamber unit 5 is lifted. The winch 22 is lifted up to the second elevating path unit 4 as in embodiment 2. At this time, the car 8 is lifted up to the machine room unit 5 via the chain 35. Since the rope 7 is pulled out, the counterweight 9 is kept fixed to the support table 36.

As shown in fig. 17, after the machine room unit 5 is fixed at the lifted position, a process of returning the position of the upper sheave 32 is performed. The winch 22 moves above the upper sheave 32, and then lifts the upper sheave 32. The upper sheave 32 is lowered from the second sheave block 34 to the first sheave block 33 by the winch 22, and then mounted on the first sheave block 33. By returning the upper sheave 32 from the second sheave block 34 to the first sheave block 33, the worker can efficiently perform work on the upper portion of the second elevating path unit 4.

Then, although not shown, the rope paying-out device 31 winds up the remaining paying-out portion of the rope 7 and then fixes the rope 7. The counterweight 9 is removed from the support table 36. The car 8 is detached from the chain 35. The car 8 is in a state capable of running.

According to embodiment 3 described above, the elevator 1 includes the counterweight 9 as the first lifting body, the car 8 as the second lifting body, the rope paying-out device 31, the rope 7, the upper sheave 32, and the second sheave block 34. Before the process of lifting the machine room unit 5, the upper pulley 32 is lifted to the second pulley table 34. At this time, the rope 7 is extended by being paid out from the rope paying-out device 31. Therefore, when the lifting stroke is extended, the operation of replacing the rope 7 with a long rope corresponding to the extended length can be omitted. As a result, the efficiency of transporting people, objects, and the like can be improved.

When the rope 7 is paid out, the upper sheave 32 may be lifted without the rotation restriction of the hoist 6, the car sheave 8b, and the counterweight sheave 9 a. Therefore, the generation of large traction force on the rope 7 can be suppressed. As a result, the operation of extending the rope 7 can be performed more smoothly.

The rope paying-out device 31 may pay out the rope 7 in a state where tension of a degree that the rope 7 is not excessively loosened is applied to the rope 7. Therefore, the operation of extending the rope 7 can be performed more smoothly.

The car 8 and the counterweight 9 may be located opposite to each other as shown in embodiment 3.

Next, a modification of the second elevating path unit 4 will be described with reference to fig. 18 to 20.

Fig. 18 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3. Fig. 19 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3. Fig. 20 is a diagram showing a modification of the second hoistway unit of the elevator according to embodiment 3.

As shown in fig. 18, the elevator 1 includes a third roof 37 and a third pulley table 38. The third roof 37 is longer in the up-down direction than the first roof 21 not shown in fig. 18. The winch 22 is disposed inside the third roof 37. The winch 22 is provided so as to be movable in the horizontal direction and rotatable about the vertical direction.

The third pulley block 38 is provided inside the third roof 37 above the second hoistway space 4a. The third pulley block 38 rotatably mounts the upper pulley 32 inside the third roof 37.

Fig. 19 shows a process of extending the rope 7 in the modification. The upper sheave 32 is provided on the third sheave block 38 at a position higher than the frame of the second elevating path unit 4.

Then, as shown in fig. 20, the machine room unit 5 is lifted. The winch 22 is moved to a position where it can lift the machinery chamber unit 5. The winch 22 lifts the machine room unit 5 to the upper portion of the second elevating path unit 4 as in the modification of embodiment 2. When the machine room unit 5 is present at this position, the car 8 can move to the roof of the building 2 as the lower part of the second hoistway unit 4.

According to the modification of embodiment 3 described above, the winch 22 can lift the machine room unit 5 to a position above the car 8 that is in a state of being lifted up to the roof of the building 2.

After lifting the machine room unit 5, the upper sheave 32 may be operated while being mounted on the third sheave block 38.

Industrial applicability

As described above, the elevator and the lifting stroke extension method of the present invention can be used for an elevator for building construction.

Description of the reference numerals

1 elevator, 2 building, 3 first hoistway unit, 3a first hoistway space, 4 second hoistway unit, 4a second hoistway space, 5 machine room unit, 6 hoist, 7 rope, 8 car, 8a car door, 8b car sling, 9 counterweight, 9a counterweight sling, 10 control device, 11 first car rail, 12 first counterweight rail, 13 first hoistway door, 14 second car rail, 15 second counterweight rail, 16 second hoistway door, 17 hook, 20 hoist, 21 first roof, 22 winch, 23 screening floor, 24 second roof, 31 device, 32 upper sheave, 33 first sheave table, 34 second sheave table, 35 chain, 36 support table, 37 third roof, 38 third sheave table

Claims (9)

1. An elevator, wherein the elevator comprises:

a first elevating path unit provided from a lower part of a building to a roof surface inside the building and forming a first elevating path space extending to the roof surface inside;

a machine room unit having a hoist for lifting and lowering a car via a rope, the machine room unit being movable in an up-down direction in the first hoistway space of the first hoistway unit; and

and a second hoistway unit that is provided above the roof surface at an upper end of the first hoistway unit, and that forms a second hoistway space inside, the second hoistway space being connected to an upper end of the first hoistway space so as to be movable in an up-down direction of the machine room unit and extending to a position above the roof surface.

2. The elevator according to claim 1, wherein,

the second hoistway unit is connected to an upper end of the first hoistway unit after being assembled to form the second hoistway space, so that the second hoistway space is connected to the first hoistway space.

3. The elevator according to claim 2, wherein,

the second hoistway unit is connected to an upper end of the first hoistway unit after a hoistway door is installed so as to be movable between the hoistway of the building and the second hoistway space.

4. An elevator according to claim 2 or 3, wherein,

the first lifting path unit is provided with a first track which is vertical in the length direction and guides the lift car,

the second hoistway unit is connected to an upper end of the first hoistway unit after the second rail having a longitudinal direction in a vertical direction is attached to the second rail to guide the car.

5. The elevator according to any one of claims 1 to 4, wherein,

the second elevating path unit has a winch that winds up a hook engaged with the machine room unit to thereby raise the machine room unit upward.

6. The elevator according to any one of claims 1 to 5, wherein,

the machine room unit is fixed to the second hoistway unit at a position existing above the car when the car rises to the roof of the building.

7. The elevator according to any one of claims 1 to 6, wherein,

the elevator is provided with:

a first lifting body having a first hanging wheel, which is lifted by the hoist in the first lifting path space or the second lifting path space;

a second lifting body having a second hanging wheel, which is lifted in a direction opposite to the first lifting body by the hoist in the first lifting path space or the second lifting path space;

a rope paying-out device provided to the machine room unit and paying out the rope; and

an upper sheave provided so as to be movable in an up-down direction at a position higher than the rope paying-out device,

one end of the rope is fixed to the machine room unit, the other end is released from the rope releasing device, the rope is sequentially wound around the first hanging wheel of the first lifting body, the winding machine, the second hanging wheel of the second lifting body and the upper pulley from the one end to the other end,

the second elevating path unit has a pulley table rotatably fixing the upper pulley.

8. A lift stroke extension method, wherein the lift stroke extension method comprises the steps of:

a setting step of setting a first hoistway unit inside a building, the first hoistway unit forming a first hoistway space of an elevator extending to a roof surface of the building;

a fixing step of fixing a machine room unit having a hoist for raising and lowering a car via a rope to the inside of the first hoistway unit provided in the setting step;

a connecting step of connecting a second hoistway unit to an upper end of the first hoistway unit so that a second hoistway space formed inside the second hoistway unit existing above the roof surface is connected to the first hoistway space, the connecting step being performed after the fixing step; and

and a lifting step of lifting the machine room unit to a height above the roof surface in the first and second elevating path spaces in the lifting step, the lifting step being performed after the connecting step.

9. The lift stroke extension method according to claim 8, wherein,

the lifting travel extension method includes an assembling step of assembling the second lifting path unit,

the connecting step is performed after the assembling step, and the second elevating path unit assembled in the assembling step is connected to the upper side of the first elevating path unit in the connecting step.