JP6813123B2 - How to apply elevator lift extension technology - Google Patents

Description

This invention relates to the application method of lift extension techniques elevators.

Lift extension Shikie elevators is an elevator up and down stroke of the cage is sequentially extended in accordance with the progress of the construction work. The lift extension Shikie elevators, by raising the machine room unit equipped with hoist within the hoistway, elevator stroke of the car is extended. According to such an elevator, workers and materials for construction work can be efficiently transported. As lift extension Shikie elevators, for example, it is disclosed in Patent Document 1.

European Patent No. 2804828

There is a limit value in the elevator hoisting stroke according to the capacity of the hoisting machine. Due to the limited space in which the machine room unit can be placed in the hoistway, it is impossible to mount a large hoist on the machine room unit. Therefore, the serviceable maximum height lift extension Shikie elevators in high-rise building is limited.

The present invention has been made to solve the above problems. Its purpose is to provide a method of applying lift extension techniques Rue elevators can eliminate the constraints of serviceable maximum height elevators.

The method of applying the elevator lift extension technique according to the present invention is a machine room equipped with a hoist in a lift extension type elevator applied to the hoistway of an elevator in which a main hoist is installed after the construction period is completed. A pit unit having a structure in which at least one of a car shock absorber and a balanced weight shock absorber is mounted in the direction in which the unit rises, and is guided to at least one of a car guide rail and a balanced weight guide rail. Is raised from the bottom of the hoistway and fixed to the middle part of the hoistway, so that the hoisting process is moved according to the progress of the construction work. The process of guiding the fixed pit unit to at least one of the car guide rail and the counterweight guide rail to lower it to the bottom of the hoistway, and installing the pit unit as a pit device for main installation. To be equipped.
The method of applying the elevator lift extension technique according to the present invention is a machine room equipped with a hoist in a lift extension type elevator applied to the hoistway of an elevator in which a main hoist is installed after the construction period is completed. A pit unit equipped with at least one of a car shock absorber and a balanced weight shock absorber in the direction in which the unit rises, and a compensation sheave around which a compensation rope connecting the lower part of the car and the lower part of the balanced weight is wound. The pit unit used for temporary construction is pulled out from the hoistway opening after the ascending / descending stroke moving process that moves the ascending / descending stroke according to the progress of the construction work and the ascending / descending stroke moving process. Is equipped with a process of installing different main pit equipment at the bottom of the hoistway,
In the ascending / descending stroke movement process, the car and the balancing weight are placed at a position where there is a space between the lower part of the car and the car shock absorber and between the lower part of the balancing weight and the balancing weight shock absorber, and the compensation rope is attached to the compensation sheave. In the wound state, raise the pit unit before raising the machine room unit.

According to the present invention, in the ascending / descending stroke moving step, the pit unit is raised in the direction in which the machine room unit is raised. Therefore, it is possible to eliminate the constraints of serviceable maximum height elevators.

It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a schematic diagram for explaining how to apply lift extension techniques Rue elevators put to a first embodiment (2: shows the case of a 1 roping). It is a front view which shows the 1st example of the pit unit in Embodiment 1. FIG. FIG. 7 is a view taken along the line AA of FIG. It is a BB arrow view of FIG. 7. FIG. 7 is a view taken along the line CC of FIG. It is a front view which shows the 2nd example of the pit unit in Embodiment 1. FIG. FIG. 11 is a view taken along the line AA of FIG. FIG. 11 is a view taken along the line CC of FIG. It is a front view which shows the 3rd example of the pit unit in Embodiment 1. FIG. FIG. 14 is a view taken along the line AA of FIG. It is a BB arrow view of FIG. FIG. 14 is a view taken along the line CC of FIG. It is a front view which shows the 4th example of the pit unit in Embodiment 1. FIG. FIG. 18 is a view taken along the line AA of FIG. FIG. 18 is a view taken along the line CC of FIG. It is a flow chart for explaining the procedure of application of lift extension techniques Rue elevators put to a first embodiment.

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

Embodiment 1.
FIGS. 1-6 are schematic diagrams for explaining how to apply lift extension techniques Rue elevators put to a first embodiment. Illustrate the 1 case of roping, application of lift extension techniques elevators are roping method is 1: from 1 roping method in FIG. 6 is 2 can also be applied in the case of 1 roping.

1 to 6 show the inside of the hoistway of the building under construction. For example, as shown in FIG. 1, lift extension Shikie elevators comprises a car 1, counterweight 2, the machine room unit 3, temporary hoisting machine 4, a plurality of ropes 5 and a control panel 6. The temporary hoisting machine 4 is, for example, a small hoisting machine that does not correspond to a high stroke.

The car 1 can move up and down the hoistway by being guided by a pair of car guide rails. The car 1 can be fixed to, for example, a car guide rail. The balance weight 2 can move up and down the hoistway by being guided by a pair of guide rails for the balance weight. The balance weight 2 can be fixed to, for example, a guide rail for a balance weight.

The machine room unit 3 can move up and down the hoistway by being guided by at least one of a car guide rail and a counterweight guide rail, for example. The machine room unit 3 can be fixed to at least one of a car guide rail and a counterweight guide rail, for example. The machine room unit 3 may be fixed to, for example, a structure on the building side under construction. The structure is also referred to as a building frame.

For example, a temporary hoisting machine 4 and a 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 temporary hoisting machine 4, the suspension wheel of the basket 1, and the suspension wheel of the balance weight 2. The terminal of the rope 5 is connected to the machine room unit 3 with a shackle, for example. The end of the rope 5 is located, for example, at the lower end of the machine room unit 3. When the roping method is 1: 1 roping, the suspension wheel of the car 1 and the suspension wheel of the balance weight 2 are not provided, and the terminal of the rope 5 is, for example, a shackle for the cage 1 and the balance weight 2. Connected to.

A pit unit 7 is installed below the machine room unit 3. The pit unit 7 is equipped with, for example, at least one of a car shock absorber 8 and a balanced weight shock absorber 9. The car shock absorber 8 is located directly below the car 1. The balance weight shock absorber 9 is located directly below the balance weight 2.

For example, a compensation sheave (not shown) may be mounted on the pit unit 7. For example, a compensation rope connecting the lower part of the car 1 and the lower part of the balance weight 2 is wound around the compensation sheave. For example, a car tensioning vehicle (not shown) may be mounted on the pit unit 7. For example, a car speed governor rope is wound around the car tensioner. For example, a weight-bearing vehicle (not shown) may be mounted on the pit unit 7. For example, a weight governor rope is wound around the weight-tensioning vehicle.

The pit unit 7 can move up and down the hoistway by being guided by at least one of a car guide rail and a counterweight guide rail, for example. The pit unit 7 can be fixed to at least one of a car guide rail and a counterweight guide rail, for example. The pit unit 7 may be fixed to, for example, a structure on the building side under construction. The structure is also referred to as a building frame.

When the temporary hoisting machine 4 is driven while the load of the car 1 and the balancing weight 2 is applied to the rope 5, the range below the machine room unit 3 and above the pit unit 7 in the building under construction The basket 1 and the balance weight 2 move. This range is the current ascending / descending stroke of the car 1 and the balance weight 2. The temporary hoisting machine 4 is controlled by, for example, a control panel 6 mounted on the machine room unit 3. As the construction work progresses, the ascending / descending stroke of the car 1 and the balance weight 2 is extended.

Hereinafter, with reference to FIGS. 1-6, illustrating a method of applying lift extension techniques elevators.

Application of lift extension techniques elevators includes a first lift stroke extension step. In the first ascending / descending stroke extension step, the relative position of the machine room unit 3 with respect to the pit unit 7 is raised. In the first elevating stroke extension step, for example, the machine room unit 3 is pulled up to the vicinity of the upper floor, which is currently under construction, by using the lifting device 10. FIG. 1 illustrates a case where the first ascending / descending stroke extension step is performed with the pit unit 7 installed in the pit of the hoistway.

The lifting device 10 used for pulling up the machine room unit 3 is, for example, a tower crane or a winch. The lifting device 10 lifts the machine room unit 3 with a hanging rope 11 attached to the machine room unit 3, for example.

When the machine room unit 3 rises in the first ascending / descending stroke extension step, the ascending / descending stroke is extended as shown in FIG. The machine room unit 3 that has reached the target height is fixed. FIG. 2 illustrates a case where the lifting stroke is extended to the maximum applicable lifting stroke of the temporary hoisting machine 4. This maximum ascending / descending stroke is indicated as "MAX.TR" in the figure.

The rope 5 is replaced with a longer one, for example, each time the ascending / descending stroke is extended. Further, for example, when the rope 5 is wound around the temporary hoisting machine 4 or the like from a rope drum (not shown), the rope 5 may be unwound from the rope drum according to the extended ascending / descending stroke.

In the state of FIG. 2, elevators, for example, at the moment from the lowest floor possible service in a range of up to about the upper floor is under construction.

Application of lift extension techniques elevators includes lifting stroke movement step. The ascending / descending stroke moving process is performed in a state where the machine room unit 3 can be further ascended as the construction progresses. In the ascending / descending stroke moving step, the machine room unit 3 and the pit unit 7 are moved in the same direction in the vertical direction.

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

In the ascending / descending stroke moving step, for example, the machine room unit 3 and the pit unit 7 may be individually lifted without using the connecting rope 12. For example, when the compensation sheave is not mounted on the pit unit 7, one of the machine room unit 3 and the pit unit 7 may be pulled up and then the other may be pulled up. A lifting device 10 may be used to pull up the pit unit 7. A chain block, winch, or the like installed in the machine room unit 3 may be used to pull up the pit unit 7.

For example, when the compensation sheave is mounted on the pit unit 7, even if the machine room unit 3 is pulled up and then the pit unit 7 is pulled up in the ascending / descending stroke moving process with the compensation rope removed from the compensation sheave. Good. In this case, it is possible to raise the machine room unit 3 or the pit unit 7 to a target height by one lifting operation. However, in this case, after the pit unit 7 is pulled up, it is necessary to hang the compensation rope on the compensation sheave again.

For example, when the compensating sheave is mounted on the pit unit 7, the compensating rope is wound around the compensating sheave and the lower part of the car 1 and the lower part of the counterweight 2 are located at the same height in the ascending / descending stroke moving process. In this state, the machine room unit 3 may be pulled up after the pit unit 7 is pulled up. In this case, the compensation rope will loosen temporarily, but it is not necessary to remove the compensation rope from the compensation sheave. However, in this case, since the distance at which the machine room unit 3 or the pit unit 7 can be raised by one lifting operation is limited, a plurality of lifting operations may be required.

When the machine room unit 3 and the pit unit 7 are raised in the ascending / descending stroke moving process, the ascending / descending stroke itself is raised as shown in FIG. The machine room unit 3 and the pit unit 7 that have reached the target height are fixed respectively.

As shown in FIG. 5, even after the ascending / descending stroke moving step, the ascending / descending stroke is performed by MAX. It can be maintained in TR. In the state of FIG. 5, elevators are pits unit 7 has risen as temporary pits, it is possible service to upper floors. Incidentally, in the state of FIG. 5, making it impossible to service elevators to floors below the pit unit 7. However, at the stage of progress of the construction shown in FIG. 5, there is no major problem because other low-rise elevators have already started operation.

By repeating the lifting stroke movement step described with reference to FIGS. 3 to 5, while maintaining the maximum lift stroke of applicability of the temporary hoisting machine 4 is movable lifting stroke of elevators upward ..

Application of lift extension techniques elevators includes a second lift stroke extension step. The second ascending / descending stroke extension process includes a main hoisting machine installation process and a pit equipment installation process. The main hoisting machine installation process is performed, for example, after the construction period ends. In the main hoisting machine installation process, as shown in FIG. 6, the machine room unit 3 and the temporary hoisting machine 4 are removed, and the main hoisting machine 14 is installed in the machine room 13. In the pit equipment installation process, for example, as shown in FIG. 6, the pit unit 7 is lowered to the lowermost part of the hoistway. In this case, the pit unit 7 is used as a pit device for main installation. Further, in the pit equipment installation process, the pit unit 7 used for temporary construction may be removed during the construction period, and a new pit equipment for main installation different from the pit unit 7 may be installed. When the second ascending / descending stroke extension process is completed, the elevator service will be available from the bottom floor to the top floor of the building.

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

FIG. 7 is a front view showing a first example of the pit unit according to the first embodiment. FIG. 8 is a view taken along the line AA of FIG. FIG. 9 is a view taken along the line BB of FIG. 7. FIG. 10 is a view taken along the line CC of FIG.

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

A compensation sheave 15 is mounted in the first example of the pit unit 7. The compensating 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 is a car side shock absorber stand 18, a weight side shock absorber stand 19, a car side shock absorber support stand 20, a weight side shock absorber support stand 21, a car side shock absorber support beam 22, and a weight side buffer. Instrument support beam 23, shock absorber base connecting beam 24, compensating sheave rail support beam 25, compensating sheave rail 26, car side first guide part 27, weight side first guide part 28, car side second guide part 29 and A second guide portion 30 on the weight side is provided.

The car-side shock absorber base 18 is arranged between the pair of car guide rails 31 along the front-rear direction. The car-side shock absorber base 18 supports the car-side shock absorber support base 20. The car side shock absorber support base 20 supports the car shock absorber 8. When the car side shock absorber support 20 is not arranged due to the layout of the pit equipment, the car side shock absorber base 18 directly supports the car shock absorber 8.

The weight-side shock absorber base 19 is arranged between the pair of balanced weight guide rails 32 along the front-rear direction. The weight-side shock absorber base 19 supports the weight-side shock absorber support base 21. The weight side shock absorber support 21 supports the balanced weight shock absorber 9. When the weight side shock absorber support 21 is not arranged due to the layout of the pit device, the weight side shock absorber base 19 directly supports the balanced weight shock absorber 9.

The car-side shock absorber support beam 22 is arranged above the car-side shock absorber base 18 along the front-rear direction. The car side shock absorber support beam 22 supports the car shock absorber 8 from the left side.

The weight-side shock absorber support beam 23 is arranged above the weight-side shock absorber base 19 along the front-rear direction. The weight side shock absorber support beam 23 supports the balanced weight shock absorber 9 from the right side.

The pair of shock absorber base connecting beams 24 connect the upper surface of the car side shock absorber base 18 and the upper surface of the weight side shock absorber base 19 along the left-right direction. One of the shock absorber base connecting beams 24 is arranged in front of the car shock absorber 8 and the balanced weight shock absorber 9. The other shock absorber base connecting beam 24 is arranged behind the car shock absorber 8 and the balance weight shock absorber 9.

The pair of compensating sheave rail support beams 25 connect the car side shock absorber support beam 22 and the weight side shock absorber support beam 23 along the left-right direction. One of the compensating sheave rail support beams 25 is arranged in front of the car shock absorber 8 and the balanced weight shock absorber 9. The other compensating sheave rail support beam 25 is arranged behind the car shock absorber 8 and the counterweight weight shock absorber 9.

The pair of compensating sheave rails 26 are supported by a pair of shock absorber base 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 shock absorber base 18. The first guide portion 27 on the car side is guided by the car guide rail 31.

The pair of weight-side first guide portions 28 are provided at both ends of the weight-side shock absorber base 19. The first guide portion 28 on the weight side is guided by the guide rail 32 for the balanced weight.

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

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

The pit unit 7 includes a load support device 33. The load support 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 tubular member 33a and a slide member 33b. The tubular member 33a is fixed to the lower surface of the car-side shock absorber base 18 and the lower surface of the weight-side shock absorber base 19 along the left-right direction. The tubular member 33a is arranged below, for example, the shock absorber base connecting beam 24. The slide member 33b is inserted into the tubular member 33a. The slide member 33b can be completely housed inside, for example, the tubular member 33a. For example, at least a part of the slide member 33b can protrude from the tubular member 33a.

As shown in FIG. 7, the slide member 33b protruding from the tubular member 33a is supported by, for example, a landing floor 34 or a structure on the building side under construction. The pit unit 7 is fixed in the hoistway by being supported by the load support device 33. When the pit unit 7 is lifted, the support by the load support device 33 is released. The load support device 33 may include, for example, a hanging tool such as an eyebolt to which the hanging rope 11 or the connecting rope 12 is connected when the pit unit 7 is lifted.

FIG. 11 is a front view showing a second example of the pit unit according to the first embodiment. FIG. 12 is a view taken along the line AA of FIG. FIG. 13 is a view taken along the line CC of FIG.

Hereinafter, the structure 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.

The compensation sheave 15 is not mounted in the second example of the pit unit 7. The second example of the pit unit 7 is a car side shock absorber support 20, a weight side shock absorber support 21, a car side shock absorber support beam 22, a weight side shock absorber support beam 23, a shock absorber stand connecting beam 24, and a compensation sheave. The rail support beam 25, the compensating sheave rail 26, the car side second guide portion 29, and the weight side second guide portion 30 are not provided.

In the second example of the pit unit 7, the car shock absorber 8 is directly supported by the car side shock absorber base 18. In the second example of the pit unit 7, the balanced weight shock absorber 9 is directly supported by the weight side shock absorber base 19. In the second example of the pit unit 7, the structure of the load support device 33 is the same as that in the first example.

FIG. 14 is a front view showing a third example of the pit unit according to the first embodiment. FIG. 15 is a view taken along the line AA of FIG. FIG. 16 is a view taken along the line BB of FIG. FIG. 17 is a view taken along the line CC of FIG.

Hereinafter, the structure of the third example of the pit unit 7 will be described with reference to FIGS. 14 to 17, focusing on the 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 shock absorber base 18 and the weight side shock absorber base 19 are different from those in the first example. The third example of the pit unit 7 does not include the car side first guide portion 27 and the weight 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 shock absorber base 18 and the weight side shock absorber base 19. The pair of load support devices 33 provided on the car side shock absorber base 18 are guided by the car guide rail 31. The pair of load support devices 33 provided on the weight side shock absorber base 19 are guided by the balance weight guide rail 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 car guide rail 31 and the balance weight guide rail 32. This function is realized by, for example, a mechanism similar to an emergency stop of an elevator. The pit unit 7 is fixed in the hoistway by being driven by the load support device 33. When the pit unit 7 is lifted, the fixing by the load support device 33 is released. The car-side shock absorber base 18 and the weight-side shock absorber base 19 may be provided with a hanging tool such as an eyebolt to which the hanging rope 11 or the connecting rope 12 is connected when the pit unit 7 is lifted.

FIG. 18 is a front view showing a fourth example of the pit unit according to the first embodiment. FIG. 19 is a view taken along the line AA of FIG. FIG. 20 is a view taken along the line CC of FIG.

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

The compensation sheave 15 is not mounted in the fourth example of the pit unit 7. The fourth example of the pit unit 7 is a car side shock absorber support 20, a weight side shock absorber support 21, a car side shock absorber support beam 22, a weight side shock absorber support beam 23, a shock absorber stand connecting beam 24, and a compensation sheave. The rail support beam 25, the compensating sheave rail 26, the car side first guide portion 27, the weight side first guide portion 28, the car side second guide portion 29, and the weight side second guide portion 30 are not provided.

In the fourth example of the pit unit 7, the car shock absorber 8 is directly supported by the car side shock absorber base 18. In the fourth example of the pit unit 7, the balanced weight shock absorber 9 is directly supported by the weight side shock absorber base 19. In the fourth example of the pit unit 7, the structures of the car side shock absorber base 18 and the weight side shock absorber base 19 are the same as those in the third example. In the fourth example of the pit unit 7, the function of the load support device 33 is the same as in the third example.

The structure of the pit unit 7 in the first embodiment is not limited to the structure shown in FIGS. 7 to 20. The pit unit 7 may be equipped with, for example, at least one of a car shock absorber 8 and a balance weight shock absorber 9.

Figure 21 is a flowchart for explaining the procedure of application of lift extension techniques Rue elevators put to a first embodiment. Hereinafter, an example of the procedure of the method of applying the lift extension technique will be described with reference to FIG.

In step S101, the worker performs the first ascending / descending stroke extension step. The first ascending / descending stroke extension step may be repeated a plurality of times. After that, the worker performs the step of step S102. In step S102, the worker performs the ascending / descending stroke moving step. The ascending / descending stroke moving step may be repeated a plurality of times. After that, the worker performs the step of step S103. In step S103, the worker performs a step of installing the hoisting machine for main installation, a step of lowering the pit unit 7 fixed to the middle part of the hoistway to the bottom of the hoistway, or a step of installing pit equipment for main installation. By doing so, the second ascending / descending stroke extension step is performed. As a result, regardless of the height of the building, it can be applied to lift extension technology of elevators.

According to the first embodiment described above, application of lift extension techniques elevators comprises a first lifting stroke extension step, a lifting stroke movement step, the second lift stroke extension step. In the first ascending / descending stroke extension step, the machine room unit 3 is relative to the pit unit 7 which is equipped with at least one of the car shock absorber 8 and the balance weight shock absorber 9 and can move up and down the hoistway below the machine room unit 3. This is the process of raising the position. The ascending / descending 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 elevators with compact and lightweight temporary hoisting machine 4 than the設用hoist 14 also becomes applicable to high-rise building. In the second ascending / descending stroke extension step, the position of the pit unit 7 capable of ascending / descending the hoistway by installing the main hoisting machine 14 and further mounting at least one of the car shock absorber 8 and the balance weight shock absorber 9. This is the process of lowering the weight or installing new pit equipment. As a result, it is possible to eliminate the constraints of serviceable maximum height elevators.

Further, in the ascending / descending stroke moving step, for example, the machine room unit 3 is pulled up with the pit unit 7 connected to the machine room unit 3. In this case, the lifting work can be done only once, so that the work time can be shortened.

Further, in the ascending / descending stroke moving step, for example, the pit unit 7 may be pulled up after the machine room unit 3 is pulled up with the compensation rope 17 removed from the compensation sheave 15. In this case, the load in the lifting work can be reduced. Further, in this case, the machine room unit 3 or the pit unit 7 can be raised to a target height by one lifting operation.

Further, in the ascending / descending stroke moving step, for example, the compensating rope 17 is wound around the compensating sheave 15 and between the lower part of the car 1 and the car shock absorber 8 and between the lower part of the balance weight 2 and the balance weight shock absorber 9. The machine room unit 3 may be pulled up after the pit unit 7 is pulled up in a state where the car 1 and the balance weight 2 are arranged at a position where a space is formed. In this case, the load in the lifting work can be reduced. Further, in this case, it is not necessary to attach / detach the compensation rope 17 to / from the compensation sheave 15.

Further, in the ascending / descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 may be raised while the car 1 is placed on the car shock absorber 8. In the ascending / descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 may be raised while the balance weight 2 is placed on the balance weight shock absorber 9. In the ascending / descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 is placed in a state where the car 1 is placed on the car shock absorber 8 and the balance weight 2 is placed on the balance weight shock absorber 9. You may raise it. That is, in the ascending / descending 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.

Further, in the first elevating stroke extension step, for example, the elevating stroke is extended to the maximum elevating stroke to which the temporary hoisting machine 4 can be applied. In this case, while maintaining the movable range of the elevators to the maximum, it is possible to eliminate the constraints of serviceable maximum height.

Further, the pit unit 7 may be assembled in advance outside the hoistway, for example. In this case, it is possible to carry out the step of integrally carrying the pre-assembled pit unit 7 into the hoistway through the hoistway opening before carrying out the hoisting stroke moving step. Further, in this case, after the ascending / descending stroke moving step is carried out, the step of carrying out the pit unit 7 used for temporary construction to the outside of the building by pulling out from the hoistway opening can be carried out. As a result, the time required for installation and removal of the pit unit 7 can be reduced.

This invention can be utilized to lift the extension Shikie elevators in high-rise buildings.

1 Basket 2 Balanced weight 3 Machine room unit 4 Temporary hoisting machine 5 Rope 6 Control panel 7 Pit unit 8 Car shock absorber 9 Balanced weight shock absorber 10 Lifting device 11 Hanging rope 12 Connecting rope 13 Machine room 14 Main installation Hoisting machine 15 Compensation sheave 16 Housing 17 Compensation rope 18 Car side shock absorber stand 19 Weight side shock absorber stand 20 Car side shock absorber support stand 21 Weight side shock absorber support base 22 Car side shock absorber support beam 23 Weight side shock absorber Support beam 24 Cushioning base connecting beam 25 Compensation sheave rail Support beam 26 Compensation sheave rail 27 Car side first guide part 28 Weight side first guide part 29 Car side second guide part 30 Weight side second guide part 31 Car Guide rail 32 Guide rail for balancing weight 33 Load support device 33a Cylindrical member 33b Slide member 34 Landing floor

Claims (11)

In the lift extension type elevator applied to the hoistway of the elevator where the main hoisting machine is installed after the construction period, the car shock absorber and the balance weight are raised in the direction in which the machine room unit equipped with the hoisting machine is raised. A pit unit equipped with at least one of the shock absorbers and having a structure of being guided by at least one of the car guide rail and the balance weight guide rail is raised from the bottom of the hoistway to the middle part of the hoistway. By fixing, the ascending / descending stroke movement process that moves the ascending / descending stroke according to the progress of the construction work,
After implementation of the lifting stroke movement step, the shaft by causing guiding the pits unit is fixed to the hoistway intermediate portion in at least the one of said car guide rails and the counterweight guide rails top The process of lowering to the bottom and installing the pit unit as a pit device for main installation,
How to apply the elevator lift extension technology equipped with. The method for applying the elevator lift extension technique according to claim 1, wherein the pit unit can be fixed to at least one of the car guide rail, the balance weight guide rail, and the building frame. The method for applying the elevator lift extension technique according to claim 1 or 2, wherein in the ascending / descending stroke moving step, the machine room unit is raised and then the pit unit is raised. In the ascending / descending stroke moving step, the car and the counterweight are arranged at a position where a space is formed between the lower part of the car and the counterbore shock absorber and between the lower part of the counterweight and the counterbore weight shock absorber. The method for applying the elevator lift extension technique according to claim 1 or 2, wherein the pit unit is raised before the machine room unit is raised. The method for applying the elevator lift extension technique according to claim 1 or 2, wherein in the ascending / descending stroke moving step, the machine room unit and the pit unit are simultaneously raised in a connected state. The elevator according to claim 1 or 2, wherein in the ascending / descending stroke moving step, the machine room unit or the pit unit is raised while the weight of at least one of the car and the counterweight is supported by the pit unit. How to apply the lift extension technology. In the lift extension type elevator applied to the hoistway of the elevator where the main hoisting machine is installed after the construction period is completed, the car shock absorber and the balance weight are raised in the direction in which the machine room unit equipped with the hoisting machine is raised. By raising the pit unit equipped with at least one of the shock absorbers and the compensation sheave around which the compensation rope connecting the lower part of the car and the lower part of the balance weight is wound, it can be raised and lowered according to the progress of the construction work. Elevator stroke movement process to move the stroke and
After carrying out the ascending / descending stroke moving step, the pit unit used for temporary construction is pulled out from the hoistway opening, and a pit device for main installation different from the pit unit is installed at the bottom of the hoistway.
With
In the ascending / descending stroke moving step, the car and the counterweight are arranged at positions where a space is formed between the lower part of the car and the car shock absorber and between the lower part of the balance weight and the balance weight shock absorber. A method of applying an elevator lift extension technique for raising the pit unit before raising the machine room unit in a state where the compensation rope is wound around the compensation sheave. The method for applying the elevator lift extension technique according to claim 7, wherein the pit unit has a structure in which the guide rail for a car and a guide rail for a counterweight are guided to at least one of them. The method for applying the elevator lift extension technique according to claim 7 or 8, wherein the pit unit can be fixed to at least one of a car guide rail, a counterweight guide rail, and a building frame. The method for applying the elevator lift extension technique according to any one of claims 1 to 9, wherein the machine room unit is equipped with a temporary hoisting machine. A step of integrally carrying the pit unit previously assembled outside the hoistway into the hoistway through the hoistway opening before carrying out the hoistway movement step.
The method for applying the elevator lift extension technique according to any one of claims 1 to 10, further comprising.

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