JP2002037568A - Elevator for elevator installation work - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a lifting device for an elevator installation work, which suspends a work floor by a towing line of an endless winch and can smoothly move up and down the work floor. An endless winch (6) is temporarily installed on an upper end side of a hoistway (1), and a counterweight guide rail (18) is erected on the hoistway (1). And guide rail 1 for counterweight
A work floor 8 that moves up and down a route away from the hanger 8 is hung on the load side of a towing line 9 of an endless winch 6. Further, the towing line holding body 11 is engaged with the counterweight guide rail 18 so as to be able to move up and down, and connects the non-load side of the towing line 9. Thus, the problem that the anti-load side of the towing line 9 swings due to the ascent and descent of the work floor 8 and touches or becomes entangled with the hoistway equipment and hinders the installation work is solved. Smooth up and down operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for lifting an elevator, which is temporarily installed on a hoistway and moves up and down a work floor used for installation work.

[0002]

2. Description of the Related Art FIGS. 22 to 25 are views showing a conventional elevating device for elevator installation work. FIG. 22 is a longitudinal sectional view conceptually showing an elevator installation work, and FIG.
24 is a perspective view of the endless winch portion, FIG. 24 is a diagram corresponding to FIG. 22 showing another installation work situation of the elevator of FIG. 22,
FIG. 25 is also a diagram corresponding to FIG. 22, showing another installation work situation of the elevator of FIG.

In the figure, reference numeral 1 denotes an elevator hoistway,
2 is a second machine room provided on the hoistway 1, 3 is a first machine room provided on the second machine room 2, 4 is a pit formed at the lower end of the hoistway 1, and 5 is a A hoisting machine installed in one machine room 3, 6 is an endless winch temporarily installed in the second machine room 2 via a mounting stand 7, 8 is a work floor on which an operator gets into the elevator installation work and works. The endless winch 6 is hung on the load side of a pair of towing lines 9.

[0004] Reference numeral 10 denotes a deflecting vehicle pivotally connected to the second machine room 2 and disposed at a position corresponding to a wall surface of the hoistway 1 so as to face the endless winch 6, and 11 denotes a deflecting wheel provided on the hoistway 1 and having A tow rope holding body 12 holding the opposite end on the non-load side is a hoistway device such as a limit switch, and is attached to the wall of the hoistway 1 by work from the work floor 8. Reference numeral 13 denotes a main rope which is wound around the hoisting machine 5 and hung on the hoistway 1 and has a lower end at the hoistway 1.
At the position of the counterweight 14 carried into the pit 4.

FIGS. 26 to 28 are views showing another conventional elevating device for installing an elevator. FIG. 26 is a longitudinal sectional view conceptually showing an elevator installing operation.
FIG. 2 shows another installation work situation of the elevator of FIG.
FIG. 28 is a perspective view of the endless winch portion of FIG.

In the figures, the same reference numerals as those in FIGS. 22 to 25 denote the corresponding parts, and reference numeral 15 denotes a pair of tow lines of the endless winch 6.
The work floor 8 is hung by a 2: 1 roping truing configuration, with the ends being connected to tie-down beams 17 provided in the second machine room 2.

[0007] The conventional lifting device for elevator installation work is constructed as described above, and an endless winch 6 is temporarily installed in the second machine room 2 and a work floor 8 is temporarily installed in the hoistway 1. Next, the work floor 8 is suspended by suspending the towing lines 9 and 15, and the endless winch 6 is operated to raise and lower the work floor 8. Then, as shown in FIG. 22, FIG. 24, FIG. 25 or FIG. 26, FIG. 27, the worker getting on the work floor 8 performs the installation work of the hoistway equipment 12 arranged in the hoistway 1.

In such an installation work, for the hoistway equipment 12 arranged at the end position of the hoistway 1 to which the work floor 8 cannot reach, a work scaffold is separately provided temporarily. Therefore, in order to reduce the number of operations for temporarily installing a work scaffold, it is necessary to configure a lift device for elevator installation work so that the work floor 8 can reach closer to the end of the hoistway 1.

In another conventional elevator apparatus for elevator installation work shown in FIGS. 26 to 28, a work floor 8 is provided.
Is suspended by a 2: 1 roping leash configuration, so that when the work floor 8 is lowered near the lower end of the hoistway 1, the total height of the hoistway 1 on the load side of the towing line 15 is almost twice. A tow line 15 of a length is suspended.

Therefore, when the work floor 8 is raised near the upper end of the hoistway 1 as shown in FIG. 27, the length of the towing line 15 on the non-load side is almost twice as long as the total height of the hoistway 1. Become. Then, the hoistway 1 of the tow line 15 of this length is suspended by the hoistway 1, but the other hoistway 1 of the total height is disturbed by the pit 4 as shown in FIG. 27. Is deposited.

[0011]

In the above-mentioned conventional elevator apparatus for installation work of an elevator, in the elevator apparatus for installation work shown in FIG. 22, the non-load side of the towing line 9 of the endless winch 6 is the hoistway 1. Free suspension. For this reason, there has been a problem that the non-load side of the towing line 9 swings due to the ascent and descent of the work floor 8, and the towing line 9 comes into contact with the hoistway device 12 or becomes entangled with the hoistway device 12 to hinder the installation work.

Further, in the elevating device for installation work shown in FIG. 27, the towing lines 15 on the non-load side accumulated in a state disturbed in the pits 4 may be entangled with each other, which hinders the ascending and descending of the work floor 8. There was a problem that installation work was hindered.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a lift device for an elevator installation work capable of smoothly moving up and down a work floor suspended by a tow line of an endless winch. Aim.

[0014]

In an elevator apparatus for elevator installation work according to the present invention, an endless winch provisionally provided at the upper end of an elevator hoistway and a counterweight of an elevator standing upright on the hoistway. The work floor suspended on the load side of the towing line of the endless winch and raised and lowered on the horizontal projection plane from the counterweight guide rail and the non-load side of the towing line of the endless winch are connected. And a tow line holding body which is engaged with the counterweight guide rail so as to be able to move up and down.

Further, in the elevator apparatus for elevator installation work according to the present invention, a tow line holder having a recess formed by retreating from a side surface on a horizontal projection surface is provided, and the tow line support on the horizontal projection surface is provided. A main rope is provided for permanent installation of the elevator disposed in the recess of the holding body.

Further, in the elevator apparatus for elevator installation work according to the present invention, the towing line which suspends the work floor and the towing line holder is provided by a leash structure having a leash ratio larger than 1: 1 roping. .

Further, in the elevator apparatus for elevator installation work according to the present invention, the towing line holding member is suspended by a leash configuration having a greater leash ratio than that of the leash configuration which suspends the work floor. A tow line is provided.

In the elevator apparatus for elevator installation work according to the present invention, the ends of the towing lines provided on the towing line holder and suspended horizontally apart from each other are connected to each other, and the towing lines are connected. Is provided with a tension balancing mechanism for balancing the tension difference between the two.

In the elevator apparatus for elevator installation according to the present invention, there is provided an over-displacement detector which is provided on the towing line holder and operates when the tension balance mechanism is displaced beyond a predetermined position.

Further, in the elevator apparatus for elevator installation work according to the present invention, the overdisplacement detector operated by the indicator lamp provided corresponding to the overdisplacement detector and the operation of the overdisplacement detector is provided. A tension imbalance detection circuit for energizing an indicator light corresponding to the vessel.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 4 are views showing an example of an embodiment of the present invention. FIG. 1 is a longitudinal sectional view conceptually showing an elevator installation operation, FIG. 2 is a perspective view of an endless winch portion in FIG. 3 is an enlarged front view of the tow rope holder in FIG. 1, and FIG. 4 is a plan view of FIG.

In the figure, 1 is a hoistway of an elevator,
2 is a second machine room provided on the hoistway 1, 3 is a first machine room provided on the second machine room 2, 4 is a pit formed at the lower end of the hoistway 1, and 5 is a A hoisting machine installed in one machine room 3, 6 is an endless winch temporarily installed in the second machine room 2 via a mounting stand 7, 8 is a work floor on which an operator gets into the elevator installation work and works. The endless winch 6 is hung on the load side of a pair of towing lines 9.

Reference numeral 10 denotes a deflecting vehicle pivotally connected to the second machine room 2 and disposed at a position corresponding to the wall of the hoistway 1 so as to face the endless winch 6, and 11 denotes a deflecting wheel which is disposed on the hoistway 1 and has A tow rope holding body 18 holding the opposite end on the non-load side is a guide rail for a counterweight for permanent installation erected on the hoistway 1.

Reference numeral 19 denotes a guide, which is provided on both sides of the towing line holding body 11 and is engaged with the opposing counterweight guide rail 18 in a vertically movable manner. Reference numeral 20 denotes a tension equilibrium mechanism provided on the towing line holding body 11, and a shaft 21 provided on the towing line holding body 11 and having a horizontally arranged longitudinal axis. 9 comprises an arm 22 connected to the non-load side.

In the elevator apparatus for elevator installation work configured as described above, an endless winch 6 is temporarily installed in the second machine room 2 and a work floor 8 is temporarily installed in the hoistway 1. In addition, a guide rail 18 for a counterweight for permanent installation is erected on the hoistway 1, and the towing line holder 1 is guided via a guide 19.
1 are engaged. Next, the tow line 9 is hung and the work floor 8 is hung by the load side, and the non-load side of the tow line 9 is connected to the tension balancing mechanism 20 of the tow line holder 11.

With such an apparatus configuration, the endless winch 6 is operated to move the working floor 8 up and down. And
The worker who got on the work floor 8 performs the same work as that of the elevator installation work elevating device of FIGS. 22 to 25 described above, and performs the above-described hoistway equipment 12 installation work. When the work floor 8 is moved up and down in the installation work, the anti-load side of the towing line 9 of the endless winch 6 is connected to the towing line holding member 11 in a state where the tension is balanced by the tension balancing mechanism 20, and the towing line holding member 11 is moved up and down. The movement is guided by the counterweight guide rail 18.

Therefore, the non-load side of the towing line 9 is shaken by the lifting and lowering of the work floor 8, and may contact the hoistway equipment 12,
It is possible to solve the problem that the entanglement hinders the installation work. For this reason, the work floor 8 suspended and lifted by the towing line 9 of the endless winch 6 can be smoothly moved up and down to improve the installation work efficiency.

Embodiment 2 5 and 6 are views showing an example of another embodiment of the present invention. FIG. 5 is a perspective view of an endless winch portion, and FIG. 6 is an enlarged plan view of a tow line holder portion in FIG. Except for FIG. 5 and FIG. 6, an elevator installation work elevating device is configured similarly to the above-described FIGS.

In the figures, the same reference numerals as those in FIGS. 1 to 4 denote corresponding parts, and 23 denotes a tow line holder similar to the above-described tow line holder 11, which is provided between the two counterweight guide rails 18 on both sides. Recessed recess 24 in the horizontal projection plane at the center position of
Is provided. Reference numeral 25 denotes a main rope for permanent installation of an elevator wound around the hoisting machine 5 and hung on the hoistway 1. As shown in FIG. Placed in

In the elevator apparatus for elevator installation work constructed as described above, the non-load side of the towing line 9 of the endless winch 6 is connected to the counterweight guide rail 18.
Is held by the towing line holding body 23 engaged with the towing line. Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 4 can be obtained in the embodiment of FIGS.

In the embodiment shown in FIGS. 5 and 6, the main rope 25 for the permanent installation of the elevator, which is wound around the hoisting machine 5 and hung on the hoistway 1 at an appropriate time during the installation work process, is provided.
It is arranged in a recess 24 provided in the towing line holder 23.
For this reason, the towing line holding member 23 normally moves up and down without contacting the suspended main line 25, so that the work floor 8 can be smoothly operated and the installation work efficiency can be improved.

Embodiment 3 FIG. 7 to 12 also show an example of another embodiment of the present invention. FIG. 7 is a longitudinal sectional view conceptually showing an elevator installation operation, and FIG. 8 is a perspective view of an endless winch portion in FIG. , FIG. 9 is an enlarged front view of the tow rope holder in FIG. 7, FIG. 10 is a plan view of FIG.
FIG. 11 is an elevational view conceptually showing a hung state of the tow line in FIG. 7, and FIG. 12 is an electric circuit diagram provided corresponding to the tow line holder of FIG.

In the drawings, the same reference numerals as those in FIGS. 1 to 4, 5 and 6 denote the corresponding parts, 26 denotes a hanging wheel pivotally attached to the work floor 8, and 27 denotes a hanging machine provided in the second machine room 2. The tying beam 28 is provided with a tying device provided at the upper end of the hoistway 1.
Numerals 9 are pulleys pivotally attached to both ends of the arm 22 of the tension balance mechanism 20, respectively.

Reference numeral 15 denotes a tow line of the endless winch 6,
One end constituting the load side is connected to the tie-down beam 27 and descends, is wound around the suspension wheel 26 of the work floor 8 and rises, and is engaged with the endless winch 6 to constitute the anti-load side and descends to tension. The balance mechanism 20 is wound around a pulley 29 and rises, and the other end is connected to a rope clasp 28.

Reference numeral 30 denotes a right side over-displacement detector, which is provided on the towing line holding member 23 and is disposed below the right longitudinal end of the arm 22 of the tension balancing mechanism 20 in FIG. When the is rotated downward beyond a predetermined position, the operating portion is pressed to operate. Reference numeral 31 denotes a left over-displacement detector, which is provided on the towing line holding member 23 and is provided with the arm 2 of the tension balancing mechanism 20.
2 is disposed below the left longitudinal end in FIG. 9, and when the left side of the arm body 22 is pivotally displaced downward beyond a predetermined position, the operating portion is pressed to operate.

A right indicator light 32 is provided on the right side in the frontage direction of the towing line holder 23 and is connected to the right over-displacement detector 30. Reference numeral 33 denotes a left indicator light, and
And is connected to the left over-displacement detector 31. Reference numeral 34 denotes a power supply of an electric circuit diagram including the right over-displacement detector 30 and the like, which is constituted by a battery.
35 is a right over-displacement detector 30, a left over-displacement detector 31,
This is a tension imbalance detection circuit having a right indicator light 32 and a left indicator light 33 as main devices.

In the lift device for elevator installation work constructed as described above, the non-load side of the towing line 15 of the endless winch 6 is connected to the counterweight guide rail 1.
8 is held by the towing line holder 23 engaged with the towing line 8. Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 4 and the embodiment of FIGS. 5 and 6 can be obtained in the embodiment of FIGS.

Also, in the embodiment of FIGS. 7 to 11, the tow line 15 is suspended by a 2: 1 roping leash structure, so that the endless winch 6 having a small tow capacity is provided.
Can be used. For this reason, it is possible to reduce costs such as loading the endless winch 6 into the hoistway 1. In addition, since the anti-load side of the towing line 15 is suspended between the upper portion of the hoistway 1 and the pulley 29 of the tension balancing mechanism 20, the pit 4 does not accumulate in a disturbed state.

For this reason, the anti-load side of the towing line 15 accumulates in the pit 4 in a disturbed state and is entangled with each other to form the work floor 8.
The work floor 8 can be smoothly operated and the installation work efficiency can be improved without hindering the lifting and lowering of the work floor. Further, when the tension imbalance detection circuit 35 is provided and one of the pair of tow lines 15 becomes longer than the other, the arm 22 of the tension imbalance mechanism 20 is inclined.

In such a case, the overdisplacement detector on the side where the arm 22 is tilted and lowered is pressed to operate, and the traction on the side where the arm 22 is tilted and lowered is performed via the tension imbalance detection circuit 35. An indicator light corresponding to the cable 15 is turned on. by this,
Since the abnormal elongation of one of the towing lines 15 is displayed, the operator can quickly respond to the occurrence of the abnormality.

In the state where the tow line 15 is abnormally stretched, the tow line holder 23 is tilted to cause excessive lifting resistance, and the tow line holder 23 may not be able to move up and down. Further, in the case of the configuration in which the endless winches 6 for respectively pulling the pair of tow lines 15 are installed, when both the endless winches 6 are energized and the work floor 8 is moved up and down, one of the tow lines 15 is in operation. May be longer than the other.

At this time, an indicator light corresponding to the extended tow line 15 is turned on. Thus, the occurrence of the abnormality is displayed, so that the operator can quickly respond. Note that the emission colors of the right indicator light 32 and the left indicator light 33 are different from each other. With such a configuration, even in a place away from the position of the towing line holding member 23, it is possible to easily determine the towing line in which an abnormality such as abnormal elongation has occurred.

Then, for example, the endless winch 6 on the towing line side corresponding to the illuminated indicator light is connected to the tension balance mechanism 20.
By performing an inching operation in a direction in which the arm 22 returns to the horizontal posture and the indicator light is turned off, it is possible to take a countermeasure in the event of an abnormality. Therefore, it is possible to facilitate measures for abnormalities in the installation work, control for abnormalities of the endless winch 6, and the like, and improve the efficiency of the installation work.

Embodiment 4 FIG. 13 to 15 also show an example of another embodiment of the present invention. FIG. 13 is a vertical sectional view conceptually showing an elevator installation operation, and FIG. 14 is a perspective view of an endless winch portion in FIG. FIG. 15 shows FIG.
FIG. 3 is an elevational view conceptually showing a hung state of the tow line in FIG.

In the figures, the same reference numerals as those in FIGS. 7 to 12 denote corresponding parts, and reference numeral 12 denotes a hoistway device such as a limit switch, which is mounted on the wall of the hoistway 1 by working from the work floor 8. 14 is a counterweight carried into the pit 4 of the hoistway 1, and 36 is a towing line of the endless winch 6, one end of which constitutes a load side is connected to the work floor 8 and rises, and is engaged with the endless winch 6. Then, it descends to constitute the opposite side of the load, is wound around the pulley 29 of the tension balance mechanism 20 and rises, and the other end is connected to the rope stopper 28.

In the elevator apparatus for elevator installation work constructed as described above, the non-load side of the towing line 36 of the endless winch 6 is connected to the guide rail 1 for the counterweight.
8 is held by the towing line holder 23 engaged with the towing line 8. Therefore, although detailed description is omitted, the embodiments of FIGS. 13 to 15, the embodiments of FIGS.
The same operation as that of the embodiment can be obtained.

In the embodiment shown in FIGS. 13 to 15, the load side of the towing line 36 is directly connected to the work floor 8 by a leash structure, that is, suspended by 1: 1 roping.
The non-load side is hung by a 2: 1 roping leash structure. As a result, when the work floor 8 is raised by a distance h from a predetermined position as shown in FIG. 13, the distance of the descent of the tow rope holding body 23 becomes h / 2.

Therefore, since the hoistway device 12 above the predetermined rising position of the work floor 8 is mounted, even if the work floor 8 is excessively raised, the tow line holder 23 does not collide with the counterweight 14. Thus, the range in which the work floor 8 can be raised can be widened. For this reason, the hoistway equipment 12 near the upper end of the hoistway 1 can be easily attached by work from the work floor 8, and the installation work efficiency can be improved.

Embodiment 5 16 to 20 also show an example of another embodiment of the present invention. FIG. 16 is a longitudinal sectional view conceptually showing an elevator installation operation, and FIG. 17 is a perspective view of an endless winch portion in FIG. FIG. 18 shows FIG.
FIG. 19 is an enlarged front view of the tow line holding portion in FIG. 6, FIG. 19 is a plan view of FIG. 18, and FIG. 20 is an elevation view conceptually showing a hung state of the tow line in FIG.

In the drawings, the same reference numerals as those in FIGS. 7 to 12 denote the corresponding parts, 37 is a hoistway pulley pivotally attached to the wall of the hoistway 1, 38 is a tow line of the endless winch 6, and is a load side. Is connected to the tie-down beam 27, descends, is wound around the suspension wheel 26 of the work floor 8, rises, is engaged with the endless winch 6, constitutes the non-load side, and descends to reduce the tension. The other end is connected to the towing line holding member 23 while being wound around the pulley 29 of 20 and ascending, being wound around the hoistway pulley 37 and descending.

In the lift device for elevator installation work constructed as described above, the non-load side of the towing line 38 of the endless winch 6 is connected to the counterweight guide rail 1.
8 is held by the towing line holder 23 engaged with the towing line 8. Also,
A tension equilibrium mechanism 20 and a tension imbalance detection circuit 35 provided on the tow line holding body 23 are provided. Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 7 to 12 can be obtained in the embodiment of FIGS.

In the embodiment shown in FIGS. 16 to 20, the tow line 38 is hung on the load side by a 2: 1 roping leash structure. Also, the non-load side is suspended by a 3: 1 roping leash configuration. As a result, when the work floor 8 rises, for example, by a distance H from a predetermined position, the distance of the descent of the tow rope holder 23 becomes H / 1.5.

Therefore, in order to mount the hoistway device 12 above the predetermined rising position of the work floor 8, even if the work floor 8 is excessively raised, the tow line holding body 23 does not collide with the counterweight 14. Thus, the range in which the work floor 8 can be raised can be widened. For this reason, the hoistway equipment 12 near the upper end of the hoistway 1 can be easily attached by work from the work floor 8, and the installation work efficiency can be improved.

16 to 20 can be applied to the case where the total weight of the towing line 38 on the load side is less than one to two times the towing capacity of the endless winch 6. Even when the towing capacity of the endless winch 6 is insufficient with respect to the total weight, the work floor 8 can be towed up and down without any trouble.

Embodiment 6 FIG. FIG. 21 also shows an example of another embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation. Except for FIG. 21, an elevator installation work elevating device is configured similarly to the above-described embodiment of FIGS. 13 to 15. In the figure,
The same reference numerals as those in FIGS. 13 to 15 denote corresponding parts, and reference numeral 39 denotes a mounting beam temporarily provided at the upper end of the hoistway 1. A scaffold is temporarily provided from the landing on the top floor of the hoistway 1. Will be installed.

The elevator apparatus for installation work of an elevator constructed as described above is obtained by applying the embodiment shown in FIGS. 13 to 15 to the hoistway 1 having a structure in which the second machine room 2 is not installed. . That is, the non-load side of the towing line 36 of the endless winch 6 is connected to the counterweight guide rail 18.
The tow line 36 is held by the tow line holder 23 engaged with the tow line, and the tow line 36 is suspended like the embodiment of FIGS. Therefore, detailed description is omitted, but the second machine room 2
In the embodiment of FIG. 21 having no structure, the same operation as that of the embodiment of FIGS. 13 to 15 can be obtained.

[0057]

As described above, according to the present invention, an endless winch temporarily provided at the upper end of an elevator shaft, a guide rail for counterweight of an elevator provided upright on the elevator shaft, and traction of the endless winch. The work floor, which is suspended on the load side of the rope and moves up and down a path separated from the counterweight guide rail on the horizontal projection plane, and the non-load side of the endless winch tow rope are connected to the counterweight guide rail. And a tow rope holder engaged with the lift cable so as to be able to move up and down.

Thus, the endless winch is operated to move up and down the work floor, and the worker who gets on the work floor performs the work of installing the elevator. And
The non-load side of the tow line of the endless winch is connected to the tow line holder, and the tow line holder is guided by the counterweight guide rail to move up and down when the work floor is raised and lowered in this installation work. Therefore, the non-load side of the tow line swings due to the raising and lowering of the work floor, and it is possible to eliminate the problem that the installation work is hindered by contacting or entanglement with the hoistway equipment. The work floor that moves up and down can be operated smoothly, and the installation work efficiency is improved.

Further, as described above, the present invention provides a tow line holding member having a recess formed by retreating from a side surface on a horizontal projection surface, and further comprises an elevator for a towing line provided in the recess on the horizontal projection surface. A main rope for main construction is provided.

With this arrangement, the main ropes of the elevator, which are wound around the hoisting machine and hung on the hoistway at an appropriate time during the installation work process, are arranged in the recesses provided in the towing rope holder. You. For this reason, the tow line holding member can be normally lifted and lowered without contacting the suspended main line, and the work floor can be smoothly operated to improve the installation work efficiency.

The present invention, as explained above,
The work floor and the towing line which suspends the towing line holding body are provided by a towing structure having a towing ratio larger than 1: 1 roping.

As a result, the work floor or the like is hung by a leash configuration having a leash ratio larger than 1: 1 roping, and an endless winch having a small traction capacity can be used, and the endless winch is carried into the hoistway. This has the effect of saving costs.

Further, as described above, according to the present invention, the towing line which holds the towing line holding member by the towing ratio having a larger towing ratio than the towing ratio in which the work floor is hung is provided. It is provided.

As a result, the towing line holder is hung by the towing ratio of the work floor which is larger than the towing ratio of the towing line structure, and the towing line holding member is moved up and down more than the elevating distance of the work floor. The distance becomes shorter. Therefore, even if the work floor is excessively raised to attach the hoistway equipment above the predetermined raised position of the work floor, the tow line holder does not collide with the counterweight. For this reason, the range in which the work floor can be raised can be widened, and the hoistway equipment near the upper end of the hoistway can be easily attached by work from the work floor, thereby improving the installation work efficiency.

Further, as described above, according to the present invention, the ends of the towing lines provided on the towing line holder and suspended horizontally apart from each other are connected to each other to balance the difference in tension between the towing lines. This is provided with a tension balancing mechanism.

As described above, the towing line of the endless winch is connected to the towing line holder via the tension balancing mechanism. For this reason, the tension between the tow lines is balanced, and when the work floor moves up and down during installation work, loosening of the tow lines causes contact with the hoistway equipment, and the tow lines become entangled with each other, hindering the installation work. Can be eliminated, and the work floor can be operated smoothly, thereby improving the installation work efficiency.

Further, as described above, the present invention is provided with an over-displacement detector which is provided on the tow line holder and operates when the tension balance mechanism is displaced beyond a predetermined position.

As a result, the overdisplacement detector operates due to the abnormal elongation of the towing line, and the operator can quickly respond to the occurrence of the abnormality through this operation. For this reason, it is possible to prevent the occurrence of a trouble due to the abnormal elongation of the towing line, and it is possible to operate the work floor smoothly and to improve the installation work efficiency.

As described above, according to the present invention, the indicator lamp provided for each over-displacement detector and the display corresponding to the operated over-displacement detector are provided through the operation of the over-displacement detector. And a tension imbalance detecting circuit for energizing the lamp.

As a result, the overdisplacement detector which is arranged and operated corresponding to the tow line in which the abnormal elongation has occurred is displayed by turning on the indicator lamp. As a result, workers can quickly take countermeasures against towing lines that have occurred abnormally, and the towing line holder tilted due to abnormal elongation of one of the two towing lines, causing excessive lifting resistance. This prevents the occurrence of troubles such as the occurrence of trouble. Thereby, there is an effect that the work floor can be operated smoothly and the installation work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation.

FIG. 2 is a perspective view of an endless winch portion shown in FIG. 1;

FIG. 3 is an enlarged front view of the tow rope holder in FIG. 1;

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a diagram showing the second embodiment of the present invention, and is a perspective view of an endless winch portion.

FIG. 6 is an enlarged plan view of the tow rope holder in FIG. 5;

FIG. 7 is a view showing the third embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation.

FIG. 8 is a perspective view of an endless winch portion in FIG. 7;

FIG. 9 is an enlarged front view of the tow rope holder in FIG. 7;

FIG. 10 is a plan view of FIG. 9;

FIG. 11 is an elevational view conceptually showing a hung state of the towing line in FIG. 7;

FIG. 12 is an electric circuit diagram provided corresponding to the tow line holder of FIG. 9;

FIG. 13 is a view showing the fourth embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation.

FIG. 14 is a perspective view of an endless winch portion shown in FIG. 13;

FIG. 15 is an elevational view conceptually showing a hung state of the towing line in FIG. 13;

FIG. 16 is a view showing the fifth embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation.

FIG. 17 is a perspective view of an endless winch portion shown in FIG. 16;

FIG. 18 is an enlarged front view of the tow rope holder shown in FIG. 16;

FIG. 19 is a plan view of FIG. 18;

20 is an elevational view conceptually showing a hung state of the towing line in FIG. 16;

FIG. 21 is a view showing the sixth embodiment of the present invention, and is a longitudinal sectional view conceptually showing an elevator installation operation.

FIG. 22 is a vertical sectional view conceptually showing an elevator installation operation, showing a conventional elevator installation operation lifting device.

FIG. 23 is a perspective view of the endless winch shown in FIG. 22;

FIG. 24 is a view showing another installation work situation of the elevator of FIG. 22, and is a view corresponding to FIG. 22;

25 is a view showing another installation work situation of the elevator of FIG. 22, and is a view corresponding to FIG. 22.

FIG. 26 is a vertical sectional view conceptually showing an elevator installation operation, showing another conventional elevator installation operation lifting device.

FIG. 27 is a view showing another installation work situation of the elevator of FIG. 26, and is a view corresponding to FIG. 26;

FIG. 28 is a perspective view of an endless winch portion shown in FIG. 27;

[Explanation of symbols]

1 hoistway, 6 endless winch, 8 work floor, 9
Towline, 11 Towline holder, 15 Towline, 18
Guide rails for counterweights, 20 tension balancing mechanism, 24
Recess, 25 main rope, 30 right over-displacement detector, 31
Left over-displacement detector, 32 Right indicator light, 33 Left indicator light, 35 Tension imbalance detection circuit, 36 Towing line, 38 Towing line.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takashi Natsume 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 3F301 AA13 BB01 DD00 DD07

Claims (7)

[Claims] 1. An endless winch temporarily installed on an upper end side of an elevator hoistway, a guide rail for a counterweight of the elevator installed upright on the hoistway, and a lifter suspended on a load side of a tow line of the endless winch. The work floor, which is held and lifts a path away from the counterweight guide rail on the horizontal projection plane on the horizontal projection plane, and the non-load side of the towing line of the endless winch is connected to the counterweight guide rail so as to be able to move up and down freely. An elevator installation work lifting / lowering device including an engaged tow line holder. 2. The tow line holding body has a recess formed by retreating from a side surface on a horizontal projection plane, and a main rope for main construction of an elevator disposed in the recess on the horizontal projection plane is provided. The elevating device for installation work of an elevator according to claim 1, further comprising: 3. The elevator according to claim 1, wherein the tow line is formed by suspending the work floor and the tow line holding member by a leash structure having a leash ratio larger than 1: 1 roping. Elevating device for installation work. 4. The towing line is characterized in that the towing line holder is hung by a leash structure having a higher leash ratio than that of a leash structure that suspends a work floor. The elevator device for installation work of an elevator according to claim 1. 5. A tension equilibrium mechanism for equilibrating a difference in tension between the tow lines, wherein ends of the tow lines provided on the tow line holder and suspended in a horizontal direction from each other are connected to each other. The elevator device for installation work of an elevator according to claim 1, characterized in that: 6. The elevator installation work according to claim 5, further comprising an over-displacement detector provided on the tow line holder and operated by the tension balance mechanism being displaced beyond a predetermined position. lift device. 7. An indicator light provided corresponding to the over-displacement detector, and a tension for urging the indicator light corresponding to the activated over-displacement detector through the operation of the over-displacement detector. 7. The lift device according to claim 6, further comprising an imbalance detection circuit.