CN112566864B - Application method of lift extension technology of elevator - Google Patents

Abstract

Provided is a method for applying lift extension technology of an elevator, which can eliminate the restriction of the maximum height capable of providing service through the elevator. The application method of the lift extension technology of the elevator comprises the following steps: a 1 st elevation stroke extension step of raising a relative position of the machine room unit (3) with respect to a pit unit (7), the pit unit (7) carrying at least one of a car buffer (8) and a counterweight buffer (9) and being capable of elevating in the hoistway below the machine room unit (3); a lifting stroke moving step of moving a lifting stroke according to the progress of building construction by lifting the pit unit (7) in a direction in which a machine room unit (3) on which the temporary setting hoisting machine (4) is mounted is lifted; and a 2 nd lifting stroke extension step of setting a tractor (14) for formal installation, and lowering the position of the pit unit (7) or setting a pit device for new installation.

Description

Application method of lift extension technology of elevator

technical field

The invention relates to an application method of lift extension technology of elevators.

Background technique

The lift-extended elevator is an elevator in which the lift of the car is sequentially extended according to the progress of the construction. In the lift-extended elevator, the lift stroke of the car is extended by raising the machine room unit on which the hoisting machine is mounted in the hoistway. According to such an elevator, it is possible to efficiently transport workers, materials, and the like for building construction. As an elevator of the extended lift type, there is an elevator disclosed in Patent Document 1, for example.

prior art literature

Patent Literature

Patent Document 1: Specification of European Patent No. 2804828

SUMMARY OF THE INVENTION

The problem to be solved by the invention

The lift travel of the elevator has a limit value corresponding to the capacity of the hoisting machine. Due to the limitation of the space in which the machine room unit can be arranged in the hoistway, it is impossible to mount a large hoisting machine in the machine room unit. Therefore, in a high-rise building, there is a limit to the maximum height that can be served by an extended-lift elevator.

The present invention has been made in order to solve the above-mentioned problems. The object of the invention is to provide an application method of the lift extension technology of an elevator, which can eliminate the restriction of the maximum height that can be served by the elevator.

means of solving problems

The application method of the lift-extending technique of the elevator of the present invention includes the following step of moving the lift stroke: in the lift-extended elevator, the pit unit on which at least one of the car buffer and the counterweight buffer is mounted is moved to the elevator on which the lift is mounted. The machine room unit of the traction machine ascends in the ascending direction, so that the lifting stroke moves according to the progress of the building construction.

Invention effect

According to the present invention, in the lifting and lowering stroke moving step, the pit unit is raised in the direction in which the machine room unit is raised. Therefore, the restriction on the maximum height that can be serviced in the elevator can be eliminated.

Description of drawings

1 : is a schematic diagram for demonstrating the application method of the lift extension technique of the elevator in Embodiment 1 (the case of the 2:1 roping ratio is shown).

It is a schematic diagram for demonstrating the application method of the lift extension technique of the elevator in Embodiment 1 (it shows the case of 2:1 roping ratio).

It is a schematic diagram for demonstrating the application method of the lift extension technique of the elevator in Embodiment 1 (it shows the case of 2:1 roping ratio).

It is a schematic diagram for demonstrating the application method of the lift extension technique of the elevator in Embodiment 1 (it shows the case of 2:1 roping ratio).

It is a schematic diagram for demonstrating the application method of the lift extension technique of the elevator in Embodiment 1 (it shows the case of 2:1 roping ratio).

FIG. 6 is a schematic diagram for explaining a method of applying the lift extension technique of the elevator in Embodiment 1 (showing a case of a 2:1 roping ratio).

7 is a front view showing a first example of the pit unit in Embodiment 1. FIG.

FIG. 8 is a view taken along the line A-A of FIG. 7 .

FIG. 9 is a view taken along the line B-B of FIG. 7 .

FIG. 10 is a view taken along the line C-C of FIG. 7 .

11 is a front view showing a second example of the pit unit in Embodiment 1. FIG.

Fig. 12 is a view taken along the line A-A of Fig. 11 .

FIG. 13 is a view taken along the line C-C of FIG. 11 .

14 is a front view showing a third example of the pit unit in Embodiment 1. FIG.

FIG. 15 is a view taken along the line A-A of FIG. 14 .

FIG. 16 is a view taken along the line B-B of FIG. 14 .

FIG. 17 is a view taken along the line C-C of FIG. 14 .

18 is a front view showing a fourth example of the pit unit in Embodiment 1. FIG.

Fig. 19 is a view taken along the line A-A of Fig. 18 .

FIG. 20 is a view taken along the line C-C of FIG. 18 .

21 is a flowchart for explaining the procedure of the application method of the lift extension technique of the elevator in Embodiment 1. FIG.

Detailed ways

Hereinafter, embodiments will be described with reference to the drawings. In each figure, the same reference numerals are attached to the same or corresponding parts. Duplicate descriptions are appropriately simplified or omitted.

Embodiment 1.

1 to 6 are schematic diagrams for explaining a method of applying the lift extension technique of the elevator in Embodiment 1. FIG. 1 to 6 illustrate the case where the roping method is a 2:1 roping ratio, the method of applying the lift extension technique of the elevator can also be applied to a case where the roping method is a 1:1 roping ratio.

Figures 1 to 6 show the situation in the hoistway of a building under construction. For example, as shown in FIG. 1 , the lift-extending elevator includes a car 1 , a counterweight 2 , a machine room unit 3 , a hoisting machine 4 for temporary installation, a plurality of ropes 5 , and a control panel 6 . The hoisting machine 4 for temporary installation is, for example, a small hoisting machine that cannot cope with a high stroke.

The car 1 can be raised and lowered in the hoistway while being guided by a pair of car guide rails. The cage|basket|car 1 can be fixed with respect to the guide rail for cage|basket|cars, for example. The counterweight 2 can be raised and lowered in the hoistway guided by a pair of counterweight guide rails. The counterweight 2 can be fixed relative to the counterweight guide rail, for example.

The machine room unit 3 can be raised and lowered in the hoistway while being guided by, for example, at least one of the car guide rail and the counterweight guide rail. The machine room unit 3 can be fixed to, for example, at least one of the car guide rail and the counterweight guide rail. The machine room unit 3 may be fixed to, for example, a structure on the side of a building under construction. This structure is also called a building structure.

For example, the hoisting machine 4 for temporary installation and the control panel 6 are mounted on the machine room unit 3 . The plurality of ropes 5 are wound around, for example, the sheave of the hoisting machine 4 for temporary installation, the suspension sheave of the car 1 , and the suspension sheave of the counterweight 2 . The ends of the ropes 5 are connected to the machine room unit 3, for example, by means of shackles. The end of the rope 5 is located, for example, at the lower end of the machine room unit 3 . In addition, when the roping method is a 1:1 roping ratio, the suspension sheave of the car 1 and the suspension sheave of the counterweight 2 are not provided, but the terminal end of the rope 5 is connected to the car 1 and the car 1 and the Counterweight 2 connections.

A pit unit 7 is provided below the machine room unit 3 . For example, at least one of the car buffer 8 and the counterweight buffer 9 is mounted on the pit unit 7 . The car buffer 8 is located directly below the car 1 . The counterweight buffer 9 is located directly below the counterweight 2 .

For example, a compensation sheave not shown may be mounted on the pit unit 7 . For example, a compensating rope is wound around the compensating sheave, and the compensating rope connects the lower part of the car 1 and the lower part of the counterweight 2 . In the pit unit 7, for example, an unillustrated car tensioner may be mounted. For example, a car speed governor rope is wound around the car tensioning pulley. In the pit unit 7, for example, an unillustrated counterweight tensioner may be mounted. For example, a counterweight governor rope is wound around the counterweight tensioner.

The pit unit 7 can be raised and lowered in the hoistway while being guided by, for example, at least one of the car guide rail and the counterweight guide rail. The pit unit 7 can be fixed, for example, to at least one of the car guide rail and the counterweight guide rail. The pit unit 7 may be fixed to, for example, a structure on the side of a building under construction. This structure is also called a building structure.

When the hoisting machine 4 for temporary installation is driven in a state where the load of the car 1 and the counterweight 2 is received by the rope 5, the car 1 and the counterweight 2 are located below the machine room unit 3 in the building under construction. , and move within a range above the pit unit 7 . This range is the raising and lowering stroke of the car 1 and the counterweight 2 at the current time. The hoisting machine 4 for temporary installation is controlled by, for example, a control panel 6 mounted on the machine room unit 3 . The lifting and lowering strokes of the car 1 and the counterweight 2 are extended according to the progress of the building construction.

Hereinafter, the application method of the lift extension technique of an elevator is demonstrated using FIGS. 1-6.

The application method of the lift extension technique of an elevator includes a 1st raising/lowering stroke extension process. In the 1st raising/lowering stroke extension process, the relative position of the machine room unit 3 with respect to the pit unit 7 is pulled up. In the 1st raising/lowering stroke extension process, for example, the machine room unit 3 is pulled up to the vicinity of the upper floor under construction at the present time using the hoisting device 10 . FIG. 1 illustrates a case where the first lifting stroke extension step is performed in a state where the pit unit 7 is installed in the pit of the hoistway.

The hoisting device 10 for pulling up the machine room unit 3 is, for example, a tower hoist, a winch, or the like. The hoisting device 10 pulls up the machine room unit 3 by, for example, a sling 11 attached to the machine room unit 3 .

When the machine room unit 3 ascends in the first lifting and lowering stroke extension step, as shown in FIG. 2 , the lifting and lowering stroke is extended. The machine room unit 3 that will reach the target height is fixed. FIG. 2 illustrates a case where the lifting stroke is extended to the maximum lifting stroke to which the hoisting machine 4 for temporary installation can be applied. In the figure, this maximum lift travel is marked as "MAX.TR".

The rope 5 is replaced with a longer rope, for example, every time the lift stroke is extended. In addition, for example, when the rope 5 is wound around a hoisting machine 4 or the like for temporary installation from a not-shown rope reel, the rope 5 may be sent out from the rope reel according to an extended lifting and lowering stroke.

In the state of FIG. 2 , for example, the elevator can provide service in the range from the lowest floor to the vicinity of the upper floor under construction at the present time.

The application method of the lift extension technology of the elevator includes the lifting stroke moving process. The raising and lowering stroke moving process is performed in a state in which the machine room unit 3 can be further raised in accordance with the progress of the construction. In the lift stroke movement process, the machine room unit 3 and the pit unit 7 are moved in the same direction in the up-down direction.

FIG. 3 illustrates a state in which the machine room unit 3 and the pit unit 7 are connected by the connecting rope 12 , and the machine room unit 3 is pulled up using the hoisting device 10 . That is, FIG. 3 exemplifies the case where the machine room unit 3 and the pit unit 7 are lifted simultaneously in the lifting and lowering stroke moving process. In this case, even if the compensating sheave is mounted on the pit unit 7, it is not necessary to remove the compensating rope from the compensating sheave.

In the lifting and lowering stroke moving process, for example, the machine room unit 3 and the pit unit 7 may be lifted separately without using the connecting rope 12 . For example, when the pit unit 7 is not equipped with a compensation sheave, one of the machine room unit 3 and the pit unit 7 may be pulled up, and then the other may be pulled up. The lifting device 10 can also be used for the lifting of the pit unit 7 . The pit unit 7 can also be pulled up by using a chain pulley or a winch or the like provided in the machine room unit 3 .

For example, when the pit unit 7 is equipped with a compensating sheave, in the lifting and lowering stroke moving process, the machine room unit 3 may be pulled up after the compensating rope is removed from the compensating sheave, and then the bottom may be pulled up. Pit unit 7. In this case, the machine room unit 3 or the pit unit 7 can be raised to the target height by one lift operation. However, in this case, after the pit unit 7 is pulled up, it is necessary to rewind the compensation rope around the compensation sheave.

For example, when the pit unit 7 is equipped with a compensating sheave, the compensating rope may be wound around the compensating sheave, and the lower part of the car 1 and the lower part of the counterweight 2 may be wound in the lifting and lowering stroke moving process. In a state of being at the same height, after the pit unit 7 is pulled up, the machine room unit 3 is pulled up. In this case, although the compensation rope is temporarily slack, it is not necessary to remove the compensation rope from the compensation sheave. However, in this case, since the distance over which the machine room unit 3 or the pit unit 7 can be lifted by one lift operation is limited, a plurality of lift operations may be required.

In the lifting stroke moving process, when the machine room unit 3 and the pit unit 7 rise, as shown in FIG. 4 , the lifting stroke itself rises. The machine room unit 3 and the pit unit 7 that have reached the target height are respectively fixed.

As shown in FIG. 5 , even after the lifting and lowering stroke moving process, the lifting and lowering stroke can be maintained at MAX.TR. In the state of FIG. 5 , the elevator can use the raised pit unit 7 as a temporary pit to provide services for the upper floor. In addition, in the state of FIG. 5 , the elevator cannot serve the floor below the pit unit 7 . However, in the progress stage of the construction shown in FIG. 5, since other elevators for low-rise floors have already started to operate, there is no major obstacle.

By repeating the hoisting stroke moving process described using FIGS. 3 to 5 , the hoisting stroke of the elevator can be moved upward while maintaining the maximum hoisting stroke that can be applied to the hoisting machine 4 for temporary installation.

The application method of the lift extension technique of an elevator includes a 2nd raising/lowering stroke extension process. The second elevating stroke extension process includes a main installation hoisting machine installation process and a pit equipment installation process. The hoisting machine installation process for formal installation is performed after, for example, the completion of the construction period. In the main installation hoisting machine installation step, as shown in FIG. 6 , the machine room unit 3 and the temporary installation hoisting machine 4 are removed, and the main installation hoisting machine 14 is installed in the machine room 13 . In the pit facility setting step, for example, as shown in FIG. 6 , the pit unit 7 is lowered to the lowest part of the hoistway. In this case, the pit unit 7 is used as a pit facility for formal installation. In addition, in the pit facility installation step, the pit unit 7 used for temporary installation during the construction period may be removed, and a pit facility for formal installation different from the pit unit 7 may be newly installed. When the second lifting and lowering stroke extension step is completed, the elevator service can be provided from the lowest floor to the uppermost floor of the building.

The hoisting machine 14 for formal installation is, for example, a large hoisting machine corresponding to a high stroke. In a high-rise building, since the machine room 13 larger than the hoistway is prepared, a large-scale hoisting machine 14 for formal installation can be installed. As the control panel of the hoisting machine 14 for formal installation, the control panel 6 mounted on the machine room unit 3 may be used, or another control panel may be used.

7 is a front view showing a first example of the pit unit in Embodiment 1. FIG. FIG. 8 is a view taken along the line A-A of FIG. 7 . FIG. 9 is a view taken along the line B-B of FIG. 7 . FIG. 10 is a view taken along the line C-C of FIG. 7 .

Hereinafter, the configuration of the first example of the pit unit 7 will be described with reference to FIGS. 7 to 10 . In this description, front, rear, left and right are designated with the front side in FIG. 7 as the front and the back side in FIG. 7 as the rear.

In the first example of the pit unit 7, the compensation sheave 15 is mounted. The compensation sheave 15 is provided inside the housing 16 . A compensation rope 17 is wound around the compensation sheave 15 .

The first example of the pit unit 7 includes a car-side buffer table 18, a counterweight-side buffer table 19, a car-side buffer support table 20, a counterweight-side buffer support table 21, and a car-side buffer support beam 22. Counterweight side buffer support beam 23, buffer table connecting beam 24, compensating sheave rail support beam 25, compensating sheave rail 26, car side first guide portion 27, counterweight side first guide portion 28. The second guide portion 29 on the car side and the second guide portion 30 on the counterweight side.

The car-side buffer table 18 is arranged between the pair of car guide rails 31 along the front-rear direction. The car-side buffer table 18 supports the car-side buffer support table 20 . The car-side buffer support stand 20 supports the car buffer 8 . Depending on the layout of the pit facility, when the car-side buffer support table 20 is not arranged, the car-side buffer table 18 directly supports the car buffer 8 .

The counterweight-side buffer table 19 is arranged between the pair of counterweight guide rails 32 along the front-rear direction. The counterweight-side buffer table 19 supports the counterweight-side buffer support table 21 . The counterweight-side shock absorber support stand 21 supports the counterweight shock absorber 9 . Depending on the layout of the pit facility, when the counterweight-side buffer support table 21 is not disposed, the counterweight-side buffer table 19 directly supports the counterweight buffer 9 .

The car-side buffer support beam 22 is arranged above the car-side buffer table 18 in the front-rear direction. The car-side buffer support beam 22 supports the car buffer 8 from the left side.

The counterweight-side shock absorber support beam 23 is arranged above the counterweight-side shock absorber table 19 in the front-rear direction. The counterweight-side shock absorber support beam 23 supports the counterweight shock absorber 9 from the right side.

The pair of buffer table connecting beams 24 connects the upper surface of the car-side buffer table 18 and the upper surface of the counterweight-side buffer table 19 in the left-right direction. One buffer table connecting beam 24 is arranged in front of the car buffer 8 and the counterweight buffer 9 . The other buffer table connecting beam 24 is arranged behind the car buffer 8 and the counterweight buffer 9 .

A pair of rail support beams 25 for compensating sheaves connect the car-side shock absorber support beam 22 and the counterweight-side shock absorber support beam 23 in the left-right direction. One compensating sheave rail support beam 25 is arranged in front of the car buffer 8 and the counterweight buffer 9 . The other rail support beam 25 for compensating sheaves is arrange|positioned in the position behind the cage|basket|car buffer 8 and the counterweight buffer 9. FIG.

The pair of compensating sheave rails 26 are supported by a pair of buffer table connecting beams 24 and a pair of compensating sheave rail support beams 25 along the vertical direction. The housing 16 of the compensating sheave 15 is guided along the compensating sheave rail 26 .

A pair of car-side first guide portions 27 are provided at both ends of the car-side buffer table 18 . The car-side first guide portion 27 is guided by the car guide rail 31 .

A pair of counterweight-side first guide portions 28 are provided at both ends of the counterweight-side buffer table 19 . The counterweight side first guide portion 28 is guided by the counterweight guide rail 32 .

A pair of car-side second guide portions 29 are provided at both ends of the car-side buffer support beam 22 . The car-side second guide portion 29 is guided by the car guide rail 31 .

A pair of counterweight-side second guide portions 30 are provided at both ends of the counterweight-side shock absorber support beam 23 . The counterweight side second guide portion 30 is guided by the counterweight guide rail 32 .

The pit unit 7 includes a load support device 33 . The load bearing device 33 is used to fix the pit unit 7 in the hoistway.

The load support device 33 in the first example of the pit unit 7 includes, for example, a cylindrical member 33a and a sliding member 33b. The cylindrical member 33 a is fixed to the lower surface of the car-side buffer table 18 and the lower surface of the counterweight-side buffer table 19 along the left-right direction. The cylindrical member 33a is arranged below the buffer table connecting beam 24, for example. The sliding member 33b is inserted into the cylindrical member 33a. The sliding member 33b can be completely accommodated inside the cylindrical member 33a, for example. For example, at least a part of the sliding member 33b can protrude from the cylindrical member 33a.

As shown in FIG. 7 , the sliding member 33b protruding from the cylindrical member 33a is supported by, for example, a hall floor 34 or a structure on the side of a building under construction. The pit unit 7 is fixed in the hoistway by supporting the load by the load supporting device 33 . When the pit unit 7 is lifted, the support by the load bearing device 33 is released. The load support device 33 may include, for example, a hanger such as an eyebolt that is connected to the sling 11 or the connecting rope 12 when the pit unit 7 is lifted.

11 is a front view showing a second example of the pit unit in Embodiment 1. FIG. Fig. 12 is a view taken along the line A-A of Fig. 11 . FIG. 13 is a view taken along the line C-C of FIG. 11 .

Hereinafter, the configuration of the second example of the pit unit 7 will be described with reference to FIGS. 11 to 13 , focusing on the differences from the first example shown in FIGS. 7 to 10 .

In the second example of the pit unit 7, the compensation sheave 15 is not mounted. The second example of the pit unit 7 does not include the car-side buffer support platform 20, the counterweight-side buffer support platform 21, the car-side buffer support beam 22, the counterweight-side buffer support beam 23, and the buffer platform connection The beam 24 , the rail support beam 25 for compensating sheave, the rail 26 for compensating sheave, the second guide portion 29 on the car side, and the second guide portion 30 on the counterweight side.

In the second example of the pit unit 7 , the car buffer 8 is directly supported by the car-side buffer table 18 . In the second example of the pit unit 7 , the counterweight buffer 9 is directly supported by the counterweight side buffer table 19 . In the second example of the pit unit 7, the structure of the load support device 33 is the same as that of the first example.

14 is a front view showing a third example of the pit unit in Embodiment 1. FIG. FIG. 15 is a view taken along the line A-A of FIG. 14 . FIG. 16 is a view taken along the line B-B of FIG. 14 . FIG. 17 is a view taken along the line C-C of FIG. 14 .

Hereinafter, the configuration of the third example of the pit unit 7 will be described with reference to FIGS. 14 to 17 , focusing on differences from the first example shown in FIGS. 7 to 10 .

In the third example of the pit unit 7, the structures of the car-side buffer table 18 and the counterweight-side buffer table 19 are different from those of the first example. The third example of the pit unit 7 does not include the car-side first guide portion 27 and the counterweight-side first guide portion 28 .

The load support device 33 in the third example of the pit unit 7 is provided at both ends of the car-side buffer table 18 and the counterweight-side buffer table 19 . The pair of load support devices 33 provided on the car-side buffer table 18 are guided by the car guide rails 31 . The pair of load support devices 33 provided on the counterweight side buffer table 19 are guided by the counterweight guide rails 32 .

The load support device 33 in the third example of the pit unit 7 has a function of being able to be fixed to the guide rail 31 for cars and the guide rail 32 for re-use. This function is realized, for example, by the same mechanism as the emergency stop of the elevator. The pit unit 7 is fixed in the hoistway by the drive of the load bearing device 33 . When the pit unit 7 is lifted, the fixation by the load bearing device 33 is released. The car-side buffer table 18 and the counterweight-side buffer table 19 may be provided with, for example, a hanger such as an eye bolt that is connected to the sling 11 or the connecting rope 12 when the pit unit 7 is lifted.

18 is a front view showing a fourth example of the pit unit in Embodiment 1. FIG. Fig. 19 is a view taken along the line A-A of Fig. 18 . FIG. 20 is a view taken along the line C-C of FIG. 18 .

Hereinafter, the configuration of the fourth example of the pit unit 7 will be described with reference to FIGS. 18 to 20 , focusing on differences from the third example shown in FIGS. 14 to 17 .

In the fourth example of the pit unit 7, the compensation sheave 15 is not mounted. The fourth example of the pit unit 7 does not include the car-side buffer support platform 20, the counterweight-side buffer support platform 21, the car-side buffer support beam 22, the counterweight-side buffer support beam 23, and the buffer platform connection Beam 24, track support beam 25 for compensation sheave, track 26 for compensation sheave, first car-side guide portion 27, counterweight-side first guide portion 28, car-side second guide portion 29, and counterweight-side first guide portion 29. 2. Guide part 30.

In the fourth example of the pit unit 7 , the car buffer 8 is directly supported by the car-side buffer table 18 . In the fourth example of the pit unit 7 , the counterweight buffer 9 is directly supported by the counterweight side buffer table 19 . In the fourth example of the pit unit 7, the structures of the car-side buffer table 18 and the counterweight-side buffer table 19 are the same as those of the third example. In the fourth example of the pit unit 7, the function of the load support device 33 is the same as that of the third example.

The structure of the pit unit 7 in Embodiment 1 is not limited to the structure shown in FIGS. 7 to 20 . The pit unit 7 only needs to mount at least one of the car buffer 8 and the counterweight buffer 9, for example.

21 is a flowchart for explaining the procedure of the application method of the lift extension technique of the elevator in Embodiment 1. FIG. Hereinafter, an example of the procedure of the application method of the lift extension technique will be described with reference to FIG. 21 .

In step S101, an operator performs a 1st raising/lowering stroke extension process. The first elevating stroke extension process may be repeated a plurality of times. Then, the operator performs the process of step S102. In step S102, the operator performs the lifting stroke movement process. The lifting and lowering stroke moving process may be repeated several times. Then, the operator performs the process of step S103. In step S103, the operator performs the step of installing the hoisting machine for formal installation, the step of lowering the pit unit 7 fixed to the middle of the hoistway to the lowest part of the hoistway, or the step of installing pit equipment for formal installation. The second lifting stroke extension process. As a result, the lift extension technique of the elevator can be applied regardless of the height of the building.

According to Embodiment 1 described above, the method of applying the lift extension technique of the elevator includes the first lifting stroke extension step, the lifting stroke moving step, and the second lifting stroke extension step. The first lifting and lowering stroke extension step is a step of raising the relative position of the machine room unit 3 with respect to the pit unit 7 on which at least one of the car buffer 8 and the counterweight buffer 9 is mounted and can be The lower part of the machine room unit 3 is raised and lowered in the hoistway. The lifting stroke moving step is a step of moving the machine room unit 3 and the pit unit 7 in the same direction. Therefore, the lift extension technique of the elevator using the hoisting machine 4 for temporary installation which is smaller and lighter than the hoisting machine 14 for formal installation can also be applied to a high-rise building. The second raising and lowering stroke extension step is a step of installing the hoisting machine 14 for formal installation, and further, installing at least one of the car buffer 8 and the counterweight buffer 9 and enabling the pit unit 7 to be raised and lowered in the hoistway. Position drop, or set up pit equipment for new settings. As a result, the restriction on the maximum height that can be serviced by the elevator can be eliminated.

In addition, in the lift stroke moving process, for example, the machine room unit 3 is pulled up in a state where the pit unit 7 and the machine room unit 3 are connected. In this case, since the lifting work is completed at one time, the work time can be shortened.

In addition, in the lifting and lowering stroke moving process, for example, the pit unit 7 may be pulled up after the machine room unit 3 is pulled up in a state in which the compensation rope 17 is removed from the compensation sheave 15 . In this case, the load in the lifting work can be reduced. Moreover, in this case, the machine room unit 3 or the pit unit 7 can be raised to the target height by one lift operation.

In addition, in the lifting stroke moving process, for example, the compensation rope 17 may be wound around the compensation sheave 15, and the car 1 and the counterweight 2 may be arranged so as to be able to be located between the lower part of the car 1 and the car buffer 8. The machine room unit 3 is then pulled up after the pit unit 7 is pulled up in a state where the space between the counterweight 2 and the lower part of the counterweight 2 and the counterweight buffer 9 is formed. In this case, the load in the lifting work can be reduced. In addition, in this case, it is not necessary to attach and detach the compensation rope 17 to the compensation sheave 15 .

In addition, in the raising and lowering stroke moving process, for example, the machine room unit 3 or the pit unit 7 may be raised in a state where the car 1 is placed on the car buffer 8 . In the lifting stroke moving step, for example, the machine room unit 3 or the pit unit 7 may be raised in a state where the counterweight 2 is placed on the counterweight buffer 9 . In the lifting stroke moving process, for example, in a state where the car 1 is placed on the car buffer 8 and the counterweight 2 is placed on the counterweight buffer 9, the machine room unit 3 or the machine room unit 3 or The pit unit 7 is raised. That is, in the raising and lowering stroke moving step, the machine room unit 3 or the pit unit 7 may be raised while the weight of at least one of the car 1 and the counterweight 2 is supported by the pit unit 7 . In this case, the load in the lifting work can be reduced.

Moreover, in the 1st raising/lowering stroke extension process, for example, the raising/lowering stroke is extended to the maximum raising/lowering stroke which can apply the hoisting machine 4 for temporary installation. In this case, the restriction on the maximum height that can be serviced can be eliminated while maintaining the movable range of the elevator as much as possible.

In addition, for example, the pit unit 7 may be assembled in advance outside the hoistway. In this case, it is possible to implement a process of carrying the pre-assembled pit unit 7 integrally into the hoistway from the hoistway opening before carrying out the lifting and lowering stroke moving process. In addition, in this case, it is possible to carry out a process of taking out the pit unit 7 used for temporary installation from the hoistway opening and carrying it out of the building after carrying out the lifting and lowering stroke moving process. As a result, the time required for installation and removal of the pit unit 7 can be reduced.

Industrial Availability

The present invention can be used for lift-extending elevators in high-rise buildings.

Label description

1: car;

2: Counterweight;

3: computer room unit;

4: Traction machine for temporary setting;

5: rope;

6: Control panel;

7: pit unit;

8: car buffer;

9: Counterweight buffer;

10: Lifting device;

11: sling;

12: Connect the rope;

13: computer room;

14: Traction machine for formal setting;

15: Compensation sheave;

16: shell;

17: Compensation rope;

18: car side buffer table;

19: Counterweight side buffer table;

20: car side buffer support platform;

21: Counterweight side buffer support table;

22: Support beam of car side buffer;

23: Counterweight side buffer support beam;

24: Buffer table connecting beam;

25: Track support beam for compensation sheave;

26: Track for compensation sheave;

27: the first guide part on the car side;

28: The first guide part on the counterweight side;

29: the second guide part on the car side;

30: The second guide part on the counterweight side;

31: Guide rail for car;

32: For reusing guide rails;

33: Load bearing device;

33a: cylindrical part;

33b: sliding parts;

34: The landing floor.

Claims (20)

1. An application method of the lift extension technology of an elevator, comprising: The lifting stroke movement process is used in the lift-extended elevator used in the hoistway of the elevator in which the hoisting machine for formal installation is installed after the completion of the construction period, and the pit unit is raised from the lowest part of the hoistway to the machine room unit equipped with the hoisting machine. It ascends and is fixed to the middle part of the hoistway, whereby the lifting and lowering stroke is moved according to the progress of the building construction, wherein the pit unit is equipped with at least one of a car buffer and a counterweight buffer, and has a covered car A guide rail and a structure for guiding at least one of the reused rails; and A step of causing the pit unit fixed to the intermediate portion of the hoistway to be guided by at least one of the guide rail for the car and the guide rail for the counterweight to descend to the At the lowermost part of the hoistway, the pit unit is set as a pit equipment for formal installation. 2. The application method of the lift extension technology of the elevator according to claim 1, wherein, The pit unit can be fixed to at least one of the car guide rail, the counterweight guide rail, and a building structure. 3. The application method of the lift extension technology of elevator according to claim 1, wherein, In the raising/lowering stroke moving step, after raising the machine room unit, the pit unit is raised. 4. The application method of the lift extension technology of the elevator according to claim 2, wherein, In the raising/lowering stroke moving step, after raising the machine room unit, the pit unit is raised. 5. The application method of the lift extension technology of the elevator according to claim 1, wherein, In the lift stroke moving step, the car and the counterweight are arranged at positions where spaces can be formed between the lower part of the car and the car buffer and between the lower part of the counterweight and the counterweight buffer In the state, before the machine room unit is raised, the pit unit is raised. 6. The application method of the lift extension technology of the elevator according to claim 2, wherein, In the lift stroke moving step, the car and the counterweight are arranged at positions where spaces can be formed between the lower part of the car and the car buffer and between the lower part of the counterweight and the counterweight buffer In the state, before the machine room unit is raised, the pit unit is raised. 7. The application method of the lift extension technology of the elevator according to claim 1, wherein, In the raising and lowering stroke moving step, both of the machine room unit and the pit unit are simultaneously raised in a state where the machine room unit and the pit unit are connected. 8. The application method of the lift extension technology of the elevator according to claim 2, wherein, In the raising and lowering stroke moving step, both of the machine room unit and the pit unit are simultaneously raised in a state where the machine room unit and the pit unit are connected. 9. The application method of the lift extension technology of the elevator according to claim 1, wherein, In the raising/lowering stroke moving step, the machine room unit or the pit unit is raised in a state where the weight of at least one of the car and the counterweight is supported by the pit unit. 10. The application method of the lift extension technology of the elevator according to claim 2, wherein, In the raising/lowering stroke moving step, the machine room unit or the pit unit is raised in a state where the weight of at least one of the car and the counterweight is supported by the pit unit. 11. The method for applying the lift extension technology of an elevator according to any one of claims 1 to 10, wherein, The machine room unit is equipped with a hoisting machine for temporary installation. 12. The method for applying the lift extension technology of an elevator according to any one of claims 1 to 10, wherein, The method further includes a step of carrying the pit unit assembled in advance outside the hoistway into the hoistway from the opening of the hoistway as a whole, before the lifting and lowering stroke movement process is performed. 13. The method for applying the lift extension technology of an elevator according to claim 11, wherein, The method further includes a step of carrying the pit unit assembled in advance outside the hoistway into the hoistway from the opening of the hoistway as a whole, before the lifting and lowering stroke movement process is performed. 14. An application method of lift extension technology of an elevator, comprising: In the lifting stroke moving process, in the lift-extended elevator used in the hoistway of the elevator in which the hoisting machine for formal installation is installed after the completion of the construction period, the pit unit is raised in the direction in which the machine room unit on which the hoisting machine is mounted rises. The lifting stroke is moved according to the progress of the construction, wherein the pit unit is equipped with at least one of a car buffer and a counterweight buffer, and is equipped with a compensation rope for connecting the lower part of the car and the lower part of the counterweight. hanging compensating sheaves; and The step of taking out the pit unit used as a temporary installation purpose from the opening of the hoistway after the lifting and lowering stroke moving step is carried out, and installing the pit equipment for formal installation, which is different from the pit unit, on the the bottom of the shaft, In the lifting stroke moving step, the car and the counterweight are arranged so as to be able to be located between the lower part of the car and the buffer for the car, and between the lower part of the counterweight and the buffer for the counterweight The pit unit is raised before raising the machine room unit at the position where the space is formed and the compensation rope is wound around the compensation sheave. 15. The application method of the lift extension technology of the elevator according to claim 14, wherein, The pit unit has a structure guided by at least one of the car guide rail and the counter-reuse guide rail. 16. The method for applying the lift extension technology of an elevator according to claim 14, wherein, The pit unit can be fixed to at least one of a guide rail for a car, a guide rail for a counterweight, and a building structure. 17. The method for applying the lift extension technology of an elevator according to claim 15, wherein, The pit unit can be fixed to at least one of a guide rail for a car, a guide rail for a counterweight, and a building structure. 18. The method for applying the lift extension technology of an elevator according to any one of claims 14 to 17, wherein, The machine room unit is equipped with a hoisting machine for temporary installation. 19. The application method of the lift extension technology of an elevator according to any one of claims 14 to 17, wherein, The method further includes a step of carrying the pit unit assembled in advance outside the hoistway into the hoistway from the opening of the hoistway as a whole, before the lifting and lowering stroke movement process is performed. 20. The method for applying the lift extension technology of an elevator according to claim 18, wherein, The method further includes a step of carrying the pit unit assembled in advance outside the hoistway into the hoistway from the opening of the hoistway as a whole, before the lifting and lowering stroke movement process is performed.

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