JPWO2020035933A1 - How to apply elevator head extension technology - Google Patents

Abstract

It is to provide a method of applying the lift extension technology of a construction elevator that can eliminate the restriction on the maximum height that can be serviced by the construction elevator. A method of applying the lift extension technique for a construction elevator according to the present invention is to mount at least one of a car shock absorber (8) and a balance weight shock absorber (9) and move up and down the hoistway below the machine room unit (3). The first ascending / descending stroke extension process for raising the relative position of the machine room unit (3) with respect to the possible pit unit (7) and the machine room unit (3) equipped with the temporary hoisting machine (4) are raised. The position of the pit unit 7 is determined by installing the hoisting machine (14) for the main installation and the lifting process that moves the lifting process according to the progress of the construction work by raising the pit unit (7) in the direction of It is provided with a second ascending / descending stroke extension step of lowering or installing a new pit device.

Description

The present invention relates to a method of applying a lifting extension technique for a construction elevator.

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

European Patent No. 2804828

There are limit values according to the capacity of the hoisting machine in the lifting process of the elevator. It is impossible to mount a large hoist on the machine room unit because of the restriction of the space where the machine room unit can be arranged in the hoistway. For this reason, there is a limit to the maximum height that can be serviced by a lift extension work elevator in high-rise buildings.

The present invention has been made to solve the above problems. It is an object of the present invention to provide a method of applying the lifting height extension technology for a construction elevator, which can eliminate the restriction on the maximum height that can be serviced by the construction elevator.

A method of applying the lifting extension technology for a construction elevator according to the present invention is, in a lifting extension construction elevator, a car shock absorber and a counterweight shock absorber in a direction in which a machine room unit equipped with a hoist is raised. An ascending/descending stroke moving step of moving the ascending/descending stroke according to the progress of the construction work by raising a pit unit equipped with at least one.

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 remove the restriction on the maximum height that can be serviced by the construction elevator.

FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 4 is a schematic diagram for explaining a method of applying the lifting height extension technology for the construction elevator in the first embodiment (in the case of 2:1 roping). FIG. 5 is a front view showing a first example of a pit unit in the first embodiment. FIG. 8 is a view on arrow AA of FIG. 7. It is a BB arrow line view of FIG. FIG. 8 is a view on arrow CC of FIG. 7. FIG. 6 is a front view showing a second example of the pit unit in the first embodiment. FIG. 12 is a view on arrow AA of FIG. 11. FIG. 12 is a view on arrow C-C in FIG. 11. FIG. 9 is a front view showing a third example of the pit unit according to the first embodiment. It is a AA arrow line view of FIG. It is a BB arrow line view of FIG. It is a CC arrow line view of FIG. FIG. 7 is a front view showing a fourth example of the pit unit according to the first embodiment. FIG. 19 is a view on arrow AA of FIG. 18. It is a CC arrow line view of FIG. 6 is a flowchart for explaining a procedure of a method of applying the lifting height extension technology for the construction elevator in the first embodiment.

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

Embodiment 1.
1 to 6 are schematic diagrams for explaining a method of applying the lifting height extension technology for a construction elevator according to the first embodiment. 1 to 6 exemplify the case where the roping method is the 2:1 roping, but the application method of the lift extension technology for the construction elevator is also applicable when the roping method is the 1:1 roping.

1 to 6 show the inside of a hoistway of a building under construction. For example, as shown in FIG. 1, the lift extension work elevator includes a car 1, a counterweight 2, a machine room unit 3, a temporary hoist 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 support high strokes.

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

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

The machine room unit 3 is equipped with, for example, a temporary hoisting machine 4 and a control panel 6. The plurality of ropes 5 are wound around, for example, a sheave of the temporary hoist 4, a suspension car of the car 1 and a suspension car of the counterweight 2. The end of the rope 5 is connected to the machine room unit 3 by a shackle, for example. The end of the rope 5 is located at the lower end of the machine room unit 3, for example. When the roping method is 1:1 roping, the suspension car for the car 1 and the suspension car for the counterweight 2 are not provided, and the terminal of the rope 5 is, for example, a shackle for the car 1 and the counterweight 2. Connected to.

A pit unit 7 is installed below the machine room unit 3. At least one of the car shock absorber 8 and the counterweight shock absorber 9 is mounted on the pit unit 7, for example. The car shock absorber 8 is located immediately below the car 1. The counterweight shock absorber 9 is located directly below the counterweight 2.

A compensation sheave (not shown) may be mounted on the pit unit 7, for example. For example, a compensating rope that connects the lower part of the car 1 and the lower part of the counterweight 2 is wound around the compensating sheave. The pit unit 7 may be equipped with a car not shown, for example, a car. For example, a car governor rope is wound around the car tension car. The pit unit 7 may be equipped with, for example, a weight vehicle (not shown). For example, a weight governor rope is wound around the weight tension vehicle.

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

When the temporary hoist 4 is driven with the load of the car 1 and the counterweight 2 being 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 counterweight 2 move. This range is the current ascending/descending stroke of the car 1 and the counterweight 2. The temporary hoisting machine 4 is controlled by, for example, a control panel 6 mounted in the machine room unit 3. The elevating process of the car 1 and the counterweight 2 is extended according to the progress of the construction work.

Hereinafter, a method of applying the lift extension technology for the construction elevator will be described with reference to FIGS. 1 to 6.

The method of applying the lift extension technology for the construction elevator includes a first elevating stroke extension step. In the first elevating/lowering 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/lowering stroke extension step, for example, the machine room unit 3 is pulled up to the vicinity of the upper floor under construction at present by using the lifting device 10. FIG. 1 exemplifies a case where the first elevating/lowering process extension step is performed in a state where the pit unit 7 is installed in the pit of the hoistway.

The lifting device 10 used for lifting 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, for example, the hanging rope 11 attached to the machine room unit 3.

When the machine room unit 3 moves up in the first elevating stroke extension step, the elevating 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 hoisting stroke is extended to the maximum hoisting stroke to which the temporary hoisting machine 4 can be applied. This maximum lifting stroke is described as "MAX.TR" in the figure.

For example, the rope 5 is replaced with a longer one each time the elevating 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 in accordance with the extended ascending/descending stroke.

In the state shown in FIG. 2, the construction elevator can be serviced, for example, in the range from the lowest floor to the vicinity of the upper floors currently under construction.

The method of applying the lift extension technology for the construction elevator includes a lifting stroke moving step. The ascending/descending stroke moving process is performed in a state in which the machine room unit 3 can be further raised as the construction progresses. In the ascending/descending stroke moving process, 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 lifted using the lifting device 10 in a state where the machine room unit 3 and the pit unit 7 are connected by the connecting rope 12. That is, FIG. 3 exemplifies a case where the machine room unit 3 and the pit unit 7 are simultaneously lifted in the ascending/descending stroke moving step. In this case, even if the pit unit 7 is equipped with a compensating sheave, it is not necessary to remove the compensating rope from the compensating 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, it is sufficient that one of the machine room unit 3 and the pit unit 7 is pulled up and then the other is pulled up. A lifting device 10 may be used to lift the pit unit 7. A chain block or a winch installed in the machine room unit 3 may be used to lift the pit unit 7.

For example, when the pit unit 7 is equipped with a compensation sheave, even if the machine room unit 3 is pulled up and then the pit unit 7 is pulled up in a state where the compensating rope is removed from the compensation sheave in the ascending/descending movement process. Good. In this case, it is possible to raise the machine room unit 3 or the pit unit 7 to a target height with a single lifting operation. However, in this case, it is necessary to re-attach the compensating rope to the compensating sheave after the pit unit 7 is pulled up.

For example, when the pit unit 7 is equipped with a compensating sheave, 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 step of moving up and down. In this state, the machine room unit 3 may be pulled up after the pit unit 7 is pulled up. In this case, the compensating rope loosens temporarily, but it is not necessary to remove the compensating rope from the compensating sheave. However, in this case, since the distance in which the machine room unit 3 or the pit unit 7 can be lifted 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 lifted in the lifting stroke moving step, the lifting stroke itself is lifted as shown in FIG. The machine room unit 3 and the pit unit 7 that have reached the target height are fixed.

As shown in FIG. 5, even after the ascending/descending stroke moving step, the ascending/descending stroke is MAX. It can be maintained at TR. In the state of FIG. 5, the construction elevator can serve the upper floors with the raised pit unit 7 as a temporary pit. In the state of FIG. 5, the construction elevator service cannot be provided on the floor below the pit unit 7. However, at the construction stage shown in Fig. 5, other low-rise elevators are already in operation, so there is no major obstacle.

By repeating the lifting/lowering stroke moving process described with reference to FIGS. 3 to 5, it is possible to move the lifting/lowering stroke of the construction elevator upward while maintaining the maximum lifting/lowering stroke to which the temporary hoisting machine 4 can be applied. is there.

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

The main-installation hoisting machine 14 is, for example, a large hoisting machine that can handle high strokes. In a high-rise building, since a machine room 13 wider than the hoistway is prepared, a large-scale hoisting machine 14 for main installation can be installed. As the control panel of the hoisting machine 14 for permanent installation, the control panel 6 mounted in 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 on arrow AA of FIG. 7. FIG. 9 is a view on arrow B-B in FIG. 7. FIG. 10 is a view on arrow C-C of FIG. 7.

The structure of the first example of the pit unit 7 will be described below with reference to FIGS. 7 to 10. In this description, the front side is designated as the front side in FIG. 7 and the back side is designated as the back side in FIG. 7.

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

The first example of the pit unit 7 is a car-side shock absorber base 18, a weight-side shock absorber base 19, a car-side shock absorber support 20, a weight-side shock absorber support 21, a car-side shock absorber support beam 22, and a weight-side shock absorber. Device support beam 23, shock absorber connection 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 The weight-side second guide portion 30 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. Due to the layout of the pit equipment, when the car-side shock absorber support base 20 is not arranged, the car-side shock absorber base 18 directly supports the car shock absorber 8.

The weight-side shock absorber base 19 is disposed between the pair of counterweight 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 counterweight shock absorber 9. Due to the layout of the pit equipment, when the weight-side shock absorber support base 21 is not arranged, the weight-side shock absorber base 19 directly supports the counterweight 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 counterweight shock absorber 9 from the right side.

The pair of shock absorber base connection 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 shock absorber base connection beam 24 is arranged in front of the car shock absorber 8 and the counterweight shock absorber 9. The other shock absorber base connecting beam 24 is arranged rearward of the car shock absorber 8 and the counterweight shock absorber 9.

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

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

The pair of car-side first guide portions 27 are provided at both ends of the car-side shock absorber base 18. The car side first guide portion 27 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 counterweight.

The pair of car-side second guide portions 29 are provided at both ends of the car-side shock absorber support beam 22. The car side second guide portion 29 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 weight-side second guide portion 30 is guided by the counterweight guide rail 32.

The pit unit 7 includes a load supporting 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, for example, below the shock absorber base connection beam 24. The slide member 33b is inserted into the tubular member 33a. The slide member 33b can be completely housed inside the tubular member 33a, for example. For example, at least a part of the slide member 33b can project 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, the landing floor 34 or a building-side structure 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 supporting device 33 is released. The load supporting device 33 may include, for example, a suspending tool such as an eyebolt to which the suspending 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 in the first embodiment. FIG. 12 is a view on arrow AA of FIG. 11. FIG. 13 is a view taken along the line CC of FIG.

The structure of the second example of the pit unit 7 will be described below 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 on 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 base connection beam 24, 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 counterweight 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 supporting device 33 is similar to that of 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 on arrow AA of FIG. 14. FIG. 16 is a view taken along the line BB of FIG. FIG. 17 is a view on arrow C-C in FIG. 14.

The structure of the third example of the pit unit 7 will be described below 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 supporting devices 33 in the third example of the pit unit 7 are provided at both ends of the car side shock absorber base 18 and the weight side shock absorber base 19. The pair of load supporting devices 33 provided on the car-side shock absorber base 18 are guided by the car guide rails 31. A pair of load supporting devices 33 provided on the weight side shock absorber base 19 are guided by the counterweight guide rails 32.

The load supporting device 33 in the third example of the pit unit 7 has a function capable of being fixed to the car guide rail 31 and the counterweight guide rail 32. This function is realized by a mechanism similar to an elevator emergency stop, for example. The pit unit 7 is fixed in the hoistway by driving the load supporting device 33. When the pit unit 7 is lifted, the fixing by the load supporting device 33 is released. The car-side shock absorber base 18 and the weight-side shock absorber base 19 may be provided with, for example, a suspending tool such as an eyebolt to which the suspension 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 on arrow AA of FIG. 18. FIG. 20 is a view on arrow CC of FIG. 18.

The structure of the fourth example of the pit unit 7 will be described below 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 base connection beam 24, 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 counterweight shock absorber 9 is directly supported by the weight-side shock absorber base 19. In the fourth example of the pit unit 7, the car-side shock absorber base 18 and the weight-side shock absorber base 19 have the same structures as in the third example. In the fourth example of the pit unit 7, the function of the load supporting device 33 is similar to that of the third example.

The structure of 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 at least one of the car shock absorber 8 and the counterweight shock absorber 9, for example.

FIG. 21 is a flowchart for explaining the procedure of the method of applying the lifting extension technology for the construction elevator in the first embodiment. Hereinafter, an example of the procedure of the method of applying the lifting head extension technique will be described with reference to FIG.

In step S101, the worker performs a first elevating/lowering stroke extension step. The first elevating/lowering stroke extending step may be repeated a plurality of times. Then, the worker performs the process of step S102. In step S102, the worker performs an up/down stroke moving step. The up-and-down stroke moving step may be repeated a plurality of times. Then, the worker performs the process of step S103. In step S103, the worker performs a main hoist installation step, 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 the main step. By doing so, the second ascending/descending stroke extension step is performed. As a result, the lift extension technology for construction elevators can be applied regardless of the height of the building.

According to the first embodiment described above, the method of applying the lift extension technology for the construction elevator includes the first elevating/lowering stroke extending step, the elevating/lowering stroke moving step, and the second elevating/lowering stroke extending step. .. In the first elevating/lowering stroke extension step, the machine room unit 3 is mounted relative to the pit unit 7 that is equipped with at least one of the car shock absorber 8 and the counterweight shock absorber 9 and can move up and down the hoistway under the machine room unit 3. This is the step of raising the proper position. The up-and-down stroke moving step is a step of moving the machine room unit 3 and the pit unit 7 in the same direction. Therefore, it is possible to apply the lifting height extension technology for construction elevators using the temporary hoisting machine 4, which is smaller and lighter than the main hoisting machine 14, to high-rise buildings. In the second ascending/descending process extension step, the hoist 14 for main installation is installed, and at least one of the car shock absorber 8 and the counterweight shock absorber 9 is mounted and the position of the pit unit 7 capable of ascending and descending the hoistway. Is the step of lowering or installing new pit equipment. As a result, the constraint on the maximum height that can be serviced by the construction elevator can be removed.

In the up-and-down stroke moving step, for example, the machine room unit 3 is pulled up in a state where the pit unit 7 is connected to the machine room unit 3. In this case, the lifting work only has to be done once, so the working 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 of 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 portion of the car 1 and the car shock absorber 8 and between the lower portion of the counterweight 2 and the counterweight 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 counterweight 2 are arranged in a position where a space is formed. In this case, the load of lifting work can be reduced. Further, in this case, it is not necessary to attach/detach the compensating rope 17 to/from the compensating sheave 15.

Further, in the ascending/descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 may be lifted 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 lifted while the counterweight 2 is placed on the counterweight shock absorber 9. In the ascending/descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 is placed with the car 1 placed on the car shock absorber 8 and the counterweight 2 placed on the counterweight 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 lifted 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 of lifting work can be reduced.

In the first elevating/lowering stroke extension step, for example, the elevating/lowering stroke is extended to the maximum ascending/descending stroke to which the temporary hoisting machine 4 can be applied. In this case, it is possible to eliminate the restriction of the maximum serviceable height while maintaining the movable range of the construction elevator to the maximum.

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

INDUSTRIAL APPLICABILITY The present invention can be applied to a lift-extending type construction elevator in a high-rise building.

1 Car 2 Counterweight 3 Machine room unit 4 Temporary hoist 5 Rope 6 Control panel 7 Pit unit 8 Car buffer 9 Counterweight buffer 10 Lifting device 11 Hanging rope 12 Connection rope 13 Machine room 14 Main installation Hoisting machine 15 Compensation sheave 16 Housing 17 Compensation rope 18 Car-side shock absorber base 19 Weight-side shock absorber base 20 Car-side shock absorber support 21 Weight-side shock absorber support 22 Car-side shock absorber support beam 23 Weight-side shock absorber Support beam 24 Shock absorber connecting beam 25 Rail for compensating sheave Support beam 26 Rail for compensating sheave 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 Balance weight guide rail 33 Load support device 33a Cylindrical member 33b Sliding member 34 Landing floor

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 are limit values according to the capacity of the hoisting machine in the lifting process of the elevator. It is impossible to mount a large hoist on the machine room unit because of the restriction of the space where the machine room unit can be arranged in the hoistway. 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.

Application of lift extension techniques engagement Rue elevators to the present invention, the lifting height extension Shikie elevators, in the direction the machine room unit equipped with hoist is raised, out of the car buffer and counterweight buffer at least An ascending/descending process moving process is provided in which the ascending/descending process is moved in accordance with the progress of the construction work by elevating the one pit 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). FIG. 5 is a front view showing a first example of a pit unit in the first embodiment. FIG. 8 is a view on arrow AA of FIG. 7. It is a BB arrow line view of FIG. FIG. 8 is a view on arrow CC of FIG. 7. FIG. 6 is a front view showing a second example of the pit unit in the first embodiment. FIG. 12 is a view on arrow AA of FIG. 11. FIG. 12 is a view on arrow C-C in FIG. 11. FIG. 9 is a front view showing a third example of the pit unit according to the first embodiment. It is a AA arrow line view of FIG. It is a BB arrow line view of FIG. It is a CC arrow line view of FIG. FIG. 7 is a front view showing a fourth example of the pit unit according to the first embodiment. FIG. 19 is a view on arrow AA of FIG. 18. It is a CC arrow line view 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 drawing, the same or corresponding parts are designated by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

Embodiment 1.
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 a hoistway of a 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 support high strokes.

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

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

The machine room unit 3 is equipped with, for example, a temporary hoisting machine 4 and a control panel 6. The plurality of ropes 5 are wound around, for example, a sheave of the temporary hoist 4, a suspension car of the car 1 and a suspension car of the counterweight 2. The end of the rope 5 is connected to the machine room unit 3 by a shackle, for example. The end of the rope 5 is located at the lower end of the machine room unit 3, for example. When the roping method is 1:1 roping, the suspension car for the car 1 and the suspension car for the counterweight 2 are not provided, and the terminal of the rope 5 is, for example, a shackle for the car 1 and the counterweight 2. Connected to.

A pit unit 7 is installed below the machine room unit 3. At least one of the car shock absorber 8 and the counterweight shock absorber 9 is mounted on the pit unit 7, for example. The car shock absorber 8 is located immediately below the car 1. The counterweight shock absorber 9 is located directly below the counterweight 2.

A compensation sheave (not shown) may be mounted on the pit unit 7, for example. For example, a compensating rope that connects the lower part of the car 1 and the lower part of the counterweight 2 is wound around the compensating sheave. The pit unit 7 may be equipped with a car not shown, for example, a car. For example, a car governor rope is wound around the car tension car. The pit unit 7 may be equipped with, for example, a weight vehicle (not shown). For example, a weight governor rope is wound around the weight tension vehicle.

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

When the temporary hoist 4 is driven with the load of the car 1 and the counterweight 2 being 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 counterweight 2 move. This range is the current ascending/descending stroke of the car 1 and the counterweight 2. The temporary hoisting machine 4 is controlled by, for example, a control panel 6 mounted in the machine room unit 3. The elevating process of the car 1 and the counterweight 2 is extended according to the progress of the construction work.

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 elevating/lowering 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/lowering stroke extension step, for example, the machine room unit 3 is pulled up to the vicinity of the upper floor under construction at present by using the lifting device 10. FIG. 1 exemplifies a case where the first elevating/lowering process extension step is performed in a state where the pit unit 7 is installed in the pit of the hoistway.

The lifting device 10 used for lifting 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, for example, the hanging rope 11 attached to the machine room unit 3.

When the machine room unit 3 moves up in the first elevating stroke extension step, the elevating 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 hoisting stroke is extended to the maximum hoisting stroke to which the temporary hoisting machine 4 can be applied. This maximum lifting stroke is described as "MAX.TR" in the figure.

For example, the rope 5 is replaced with a longer one each time the elevating 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 in accordance with 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 in which the machine room unit 3 can be further raised as the construction progresses. In the ascending/descending stroke moving process, 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 lifted using the lifting device 10 in a state where the machine room unit 3 and the pit unit 7 are connected by the connecting rope 12. That is, FIG. 3 exemplifies a case where the machine room unit 3 and the pit unit 7 are simultaneously lifted in the ascending/descending stroke moving step. In this case, even if the pit unit 7 is equipped with a compensating sheave, it is not necessary to remove the compensating rope from the compensating 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, it is sufficient that one of the machine room unit 3 and the pit unit 7 is pulled up and then the other is pulled up. A lifting device 10 may be used to lift the pit unit 7. A chain block or a winch installed in the machine room unit 3 may be used to lift the pit unit 7.

For example, when the pit unit 7 is equipped with a compensation sheave, even if the machine room unit 3 is pulled up and then the pit unit 7 is pulled up in a state where the compensating rope is removed from the compensation sheave in the ascending/descending movement process. Good. In this case, it is possible to raise the machine room unit 3 or the pit unit 7 to a target height with a single lifting operation. However, in this case, it is necessary to re-attach the compensating rope to the compensating sheave after the pit unit 7 is pulled up.

For example, when the pit unit 7 is equipped with a compensating sheave, 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 step of moving up and down. In this state, the machine room unit 3 may be pulled up after the pit unit 7 is pulled up. In this case, the compensating rope loosens temporarily, but it is not necessary to remove the compensating rope from the compensating sheave. However, in this case, since the distance in which the machine room unit 3 or the pit unit 7 can be lifted 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 lifted in the lifting stroke moving step, the lifting stroke itself is lifted as shown in FIG. The machine room unit 3 and the pit unit 7 that have reached the target height are fixed.

As shown in FIG. 5, even after the ascending/descending stroke moving step, the ascending/descending stroke is MAX. It can be maintained at 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 construction stage shown in Fig. 5, other low-rise elevators are already in operation, so there is no major obstacle.

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 process extension step includes a main installation hoisting machine installation step and a pit equipment installation step. The hoisting machine installation process for main installation is performed, for example, after the completion of the construction period. In the main installation hoist installation step, as shown in FIG. 6, the machine room unit 3 and the temporary installation hoist 4 are removed, and the main installation hoist 14 is installed in the machine room 13. In the pit equipment installation step, for example, as shown in FIG. 6, the pit unit 7 is lowered to the bottom of the hoistway. In this case, the pit unit 7 is used as a pit device for permanent installation. In the pit equipment installation process, the pit unit 7 used for temporary installation during the construction period may be removed and a pit equipment for main installation different from the pit unit 7 may be newly installed. When the second elevating stroke extension process is completed, the elevator service is available from the bottom floor to the top floor of the building.

The main-installation hoisting machine 14 is, for example, a large hoisting machine that can handle high strokes. In a high-rise building, since a machine room 13 wider than the hoistway is prepared, a large-scale hoisting machine 14 for main installation can be installed. As the control panel of the hoisting machine 14 for permanent installation, the control panel 6 mounted in 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 on arrow AA of FIG. 7. FIG. 9 is a view on arrow B-B in FIG. 7. FIG. 10 is a view on arrow C-C of FIG. 7.

The structure of the first example of the pit unit 7 will be described below with reference to FIGS. 7 to 10. In this description, the front side is designated as the front side in FIG. 7 and the back side is designated as the back side in FIG. 7.

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

The first example of the pit unit 7 is a car-side shock absorber base 18, a weight-side shock absorber base 19, a car-side shock absorber support 20, a weight-side shock absorber support 21, a car-side shock absorber support beam 22, and a weight-side shock absorber. Device support beam 23, shock absorber connection 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 The weight-side second guide portion 30 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. Due to the layout of the pit equipment, when the car-side shock absorber support base 20 is not arranged, the car-side shock absorber base 18 directly supports the car shock absorber 8.

The weight-side shock absorber base 19 is disposed between the pair of counterweight 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 counterweight shock absorber 9. Due to the layout of the pit equipment, when the weight-side shock absorber support base 21 is not arranged, the weight-side shock absorber base 19 directly supports the counterweight 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 counterweight shock absorber 9 from the right side.

The pair of shock absorber base connection 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 shock absorber base connection beam 24 is arranged in front of the car shock absorber 8 and the counterweight shock absorber 9. The other shock absorber base connecting beam 24 is arranged rearward of the car shock absorber 8 and the counterweight shock absorber 9.

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

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

The pair of car-side first guide portions 27 are provided at both ends of the car-side shock absorber base 18. The car side first guide portion 27 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 counterweight.

The pair of car-side second guide portions 29 are provided at both ends of the car-side shock absorber support beam 22. The car side second guide portion 29 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 weight-side second guide portion 30 is guided by the counterweight guide rail 32.

The pit unit 7 includes a load supporting 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, for example, below the shock absorber base connection beam 24. The slide member 33b is inserted into the tubular member 33a. The slide member 33b can be completely housed inside the tubular member 33a, for example. For example, at least a part of the slide member 33b can project 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, the landing floor 34 or a building-side structure 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 supporting device 33 is released. The load supporting device 33 may include, for example, a suspending tool such as an eyebolt to which the suspending 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 in the first embodiment. FIG. 12 is a view on arrow AA of FIG. 11. FIG. 13 is a view taken along the line CC of FIG.

The structure of the second example of the pit unit 7 will be described below 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 on 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 base connection beam 24, 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 counterweight 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 supporting device 33 is similar to that of 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 on arrow AA of FIG. 14. FIG. 16 is a view taken along the line BB of FIG. FIG. 17 is a view on arrow C-C in FIG. 14.

The structure of the third example of the pit unit 7 will be described below 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 supporting devices 33 in the third example of the pit unit 7 are provided at both ends of the car side shock absorber base 18 and the weight side shock absorber base 19. The pair of load supporting devices 33 provided on the car-side shock absorber base 18 are guided by the car guide rails 31. A pair of load supporting devices 33 provided on the weight side shock absorber base 19 are guided by the counterweight guide rails 32.

The load supporting device 33 in the third example of the pit unit 7 has a function capable of being fixed to the car guide rail 31 and the counterweight guide rail 32. This function is realized by a mechanism similar to an elevator emergency stop, for example. The pit unit 7 is fixed in the hoistway by driving the load supporting device 33. When the pit unit 7 is lifted, the fixing by the load supporting device 33 is released. The car-side shock absorber base 18 and the weight-side shock absorber base 19 may be provided with, for example, a suspending tool such as an eyebolt to which the suspension 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 on arrow AA of FIG. 18. FIG. 20 is a view on arrow CC of FIG. 18.

The structure of the fourth example of the pit unit 7 will be described below 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 base connection beam 24, 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 counterweight shock absorber 9 is directly supported by the weight-side shock absorber base 19. In the fourth example of the pit unit 7, the car-side shock absorber base 18 and the weight-side shock absorber base 19 have the same structures as in the third example. In the fourth example of the pit unit 7, the function of the load supporting device 33 is similar to that of the third example.

The structure of 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 at least one of the car shock absorber 8 and the counterweight shock absorber 9, for example.

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 lifting head extension technique will be described with reference to FIG.

In step S101, the worker performs a first elevating/lowering stroke extension step. The first elevating/lowering stroke extending step may be repeated a plurality of times. Then, the worker performs the process of step S102. In step S102, the worker performs an up/down stroke moving step. The up-and-down stroke moving step may be repeated a plurality of times. Then, the worker performs the process of step S103. In step S103, the worker performs a main hoist installation step, 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 the main step. 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 elevating/lowering stroke extension step, the machine room unit 3 is mounted relative to the pit unit 7 that is equipped with at least one of the car shock absorber 8 and the counterweight shock absorber 9 and can move up and down the hoistway under the machine room unit 3. This is the step of raising the proper position. The up-and-down 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 process extension step, the hoist 14 for main installation is installed, and at least one of the car shock absorber 8 and the counterweight shock absorber 9 is mounted and the position of the pit unit 7 capable of ascending and descending the hoistway. Is the step of lowering or installing new pit equipment. As a result, it is possible to eliminate the constraints of serviceable maximum height elevators.

In the up-and-down stroke moving step, for example, the machine room unit 3 is pulled up in a state where the pit unit 7 is connected to the machine room unit 3. In this case, the lifting work only has to be done once, so the working 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 of 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 portion of the car 1 and the car shock absorber 8 and between the lower portion of the counterweight 2 and the counterweight 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 counterweight 2 are arranged in a position where a space is formed. In this case, the load of lifting work can be reduced. Further, in this case, it is not necessary to attach/detach the compensating rope 17 to/from the compensating sheave 15.

Further, in the ascending/descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 may be lifted 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 lifted while the counterweight 2 is placed on the counterweight shock absorber 9. In the ascending/descending stroke moving step, for example, the machine room unit 3 or the pit unit 7 is placed with the car 1 placed on the car shock absorber 8 and the counterweight 2 placed on the counterweight 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 lifted 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 of lifting work can be reduced.

In the first elevating/lowering stroke extension step, for example, the elevating/lowering stroke is extended to the maximum ascending/descending 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, the step of integrally carrying the preassembled pit unit 7 into the hoistway through the hoistway opening can be carried out before carrying out the hoisting stroke moving step. Further, in this case, after the ascending/descending process moving process is performed, the process of carrying out the pit unit 7 used for temporary installation to the outside of the building can be performed by pulling out the pit unit 7 from the hoistway opening. As a result, the time required to install and remove the pit unit 7 can be reduced.

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

1 Car 2 Counterweight 3 Machine room unit 4 Temporary hoist 5 Rope 6 Control panel 7 Pit unit 8 Car buffer 9 Counterweight buffer 10 Lifting device 11 Hanging rope 12 Connection rope 13 Machine room 14 Main installation Hoisting machine 15 Compensation sheave 16 Housing 17 Compensation rope 18 Car-side shock absorber base 19 Weight-side shock absorber base 20 Car-side shock absorber support 21 Weight-side shock absorber support 22 Car-side shock absorber support beam 23 Weight-side shock absorber Support beam 24 Shock absorber connecting beam 25 Rail for compensating sheave Support beam 26 Rail for compensating sheave 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 Balance weight guide rail 33 Load support device 33a Cylindrical member 33b Sliding member 34 Landing floor

The method of applying the elevator extension technology according to the present invention is a lifting extension elevator that is applied to a hoistway of an elevator in which a hoisting machine for permanent installation is installed after the construction period ends . The machine room unit equipped with the machine is moved up, and the pit unit equipped with at least one of the car shock absorber and the counterweight shock absorber is moved upward to move the lifting stroke according to the progress of the construction work. After performing the elevating/ lowering step moving step and the elevating/lowering step moving step, the step of lowering the pit unit fixed to the middle part of the hoistway to the bottom of the hoistway and installing the pit unit as a pit device for main installation And
A method of applying the elevator extension technology according to the present invention is a lift-extending elevator that is applied to a hoistway of an elevator where a hoisting machine for permanent installation is installed after a construction period ends, in a machine room equipped with the hoisting machine. An ascending/descending stroke moving step of moving the ascending/descending stroke according to the progress of the construction work by ascending the pit unit equipped with at least one of the car shock absorber and the counterweight shock absorber in the direction in which the unit ascends; After the step of moving up and down, the pit unit used for temporary installation is pulled out from the opening of the hoistway, and a pit device for main installation different from the pit unit is installed at the bottom of the hoistway. ..

Claims (11)

In a lift-extending elevator for construction work, by raising a pit unit equipped with at least one of a car shock absorber and a counterweight shock absorber in a direction in which a machine room unit equipped with a hoisting machine is elevated, construction work is performed. The up-and-down stroke moving process that moves the up-and-down stroke according to the progress of
Application method of lifting height extension technology for construction elevators equipped with. The method of applying the lifting height extension technology for a construction elevator according to claim 1, wherein the pit unit has a structure that is guided by at least one of a car guide rail and a counterweight guide rail. The method of applying the lifting height extension technology for a construction elevator according to claim 1 or 2, 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 of applying the lifting height extension technology for a construction elevator according to claim 1, wherein, in the lifting/lowering stroke moving step, the pit unit is lifted after the machine room unit is lifted. In the ascending/descending step, the car and the counterweight are arranged in a position where a space is formed between the car lower portion and the car shock absorber and between the lower balance weight lower part and the counterweight shock absorber, and the machine is The method for applying the lift extension technology for a construction elevator according to any one of claims 1 to 3, wherein the pit unit is raised before the room unit is raised. The lifting extension technique of the construction elevator according to claim 1, wherein the machine room unit and the pit unit are simultaneously lifted in the lifting/lowering stroke moving step in a connected state. Method of applying. 4. The machine room unit or the pit unit is raised in a state where at least one of a car and a counterweight is supported by the pit unit in the elevating/lowering step moving step. Method of applying the lift extension technology for construction elevators described in paragraph. The method for applying the lifting extension technology for a construction elevator according to any one of claims 1 to 7, wherein the machine room unit is equipped with a temporary hoisting machine. A step of lowering the pit unit fixed to the middle part of the hoistway to the lowermost part of the hoistway, and installing the pit unit as a pit device for main installation, after carrying out the hoisting stroke moving step,
A method of applying the lifting height extension technique for a construction elevator according to any one of claims 1 to 8, further comprising: After performing the ascending/descending process, the pit unit used for temporary construction is taken out of the building by extracting it from the opening of the hoistway, and the pit equipment for main installation different from the pit unit is installed at the bottom of the hoistway. Installation process,
A method of applying the lifting height extension technique for a construction elevator according to any one of claims 1 to 8, further comprising: A step of integrally carrying in the pit unit previously assembled outside the hoistway into the hoistway through the hoistway opening portion before performing the hoisting stroke moving step;
The method of applying the lifting height extension technology for a construction elevator according to any one of claims 1 to 10, further comprising:

Images