JPH0848474A - Temporary winch device for elevator installation and elevator installation method - Google Patents

Abstract

(57) [Summary] [Purpose] When the elevator car frame is moved up and down by a temporary winch to perform installation work, the installation time is shortened and it can be applied to those with a high up / down stroke. [Structure] A winch unit (30) (30) including a friction winding type endless winch is installed on a machine base (11) for permanent installation. Install the work floor (5) on the main car frame (4). One end of the rope (9) is connected to the car frame (4), the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) hangs down the hoistway. Winch unit (30)
When the car is driven, the car frame (4) moves up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary winch device used when installing an elevator and an elevator installation method using the temporary winch device.

[0002]

2. Description of the Related Art FIG. 15 is a vertical perspective view showing a conventional elevator installation method disclosed in, for example, Japanese Patent Publication No. 5-9354. In the figure, (1) is the hoistway of the elevator, (2) is the floor of the machine room, (3) is the guide rail that is erected at the bottom of the hoistway (1), and (4) is the guide rail (3). A car frame of a permanently installed elevator (elevator that operates normally after installation) that is movably engaged, and (5) is a work floor that is temporarily installed on the upper part of the permanently installed car frame (4) and serves as a workbench.

[0003] (6) is an emergency stop device provided in the main installation car frame (4) for braking the main installation car frame (4) by the operation of the speed governor (7) in the machine room, and (8) is raised and lowered. An electric winch fixed to the bottom of the road (1) around which a rope (9) is wound. (10) is an operation button installed on the work floor (5) and connected to the electric winch (8), (11) is a machine table for main installation laid on the floor (2) of the machine room, and (12) is a book. Brake (12a) installed on the installation machine base (11)
Pulley device consisting of the main hoisting machine for which the (12b)
Is a pulley composed of a drive sheave for the hoisting machine for permanent installation.

Reference numeral (13) is a suspension rope driven by an electric winch (not shown) provided separately from the electric winch (8), and the suspension beam (14) is connected to the end of the suspension rope. (15)
It is a guide rail suspended from both ends of the suspension beam (14).

Next, the procedure of a conventional elevator installation method will be described. The guide rail (3) is centered upright at the bottom of the hoistway (1), and the main installation car frame (4) is incorporated into this guide rail (3). Also, install the pulley device (3) on the machine base (1
1) Center and fix on top. Then, the electric winch (8) is fixed to the lower wall of the hoistway (1). This electric winch (8) is a drum type and one end of the rope (9) is an electric winch (8)
It is fixed to the main body, and the other end is connected to the main car frame (4) via the pulley (12b).

A beam for hanging two guide rails (15) at the same time
Lift up on (14) and from above the work floor (5) guide rails (3)
Connect with. After this connection is completed, the operation button (10) is operated to drive the electric winch (8) to wind up the rope (9) and raise the main car frame (4), that is, the work floor (5). .
Then, similarly to the above, the next guide rail (15) is lifted and the same work is repeated to install it to the top.

[0007]

In the conventional elevator installation method as described above, the electric winch (8) is installed in the hoistway.
Fixed to the bottom wall of (1), and pulley system (12) on the floor (2) of the machine room.
Is installed to raise and lower the main car frame (4), so when the guide rails (3) (15) are installed behind the car, the guide rails (3) (15) May interfere with the electric winch (8).

Further, when the existing elevator is replaced with a new elevator, it takes a long time to replace the pulley device (12), and the car work floor cannot be used during that time. In addition, when the up-and-down stroke becomes high, there is a problem that the winding capacity of the rope (9) of the electric winch (8) is limited.

The present invention has been made to solve the above problems, and it is possible to prevent the temporary winch from interfering with the guide rails, shorten the installation time, and eliminate the limitation due to the lifting process. An object is to provide a temporary winch device for elevator installation and an elevator installation method.

[0010]

A temporary installation winch device for an elevator according to a first aspect of the present invention has an endless winch fixed to a frame and driven by a motor, and a mounting metal. Equipped with a winch unit that drives the rope to raise and lower the car frame in the hoistway.The mounting metal is provided with the fastening holes for the winch units, and the fastening holes for the machine room or hoistway. It is attached.

The elevator temporary winch device according to the second aspect of the invention is provided with a plurality of winch units, each of which is driven by a motor whose slip increases according to a load, and a machine room at one end thereof. Alternatively, it has a plurality of ropes fixed to the hoistway and the other ends of which are hung in the hoistway via winch units, and these winch units are respectively coupled to the car frame via elastic bodies. is there.

A temporary winch device for elevator installation according to a third aspect of the present invention is a winch unit according to claim 1 mounted on a car frame, a pulley mounted on a machine room or a hoistway, and a pulley mounted on the pulley. A rope that is hung and connected to the car frame at one end and connected to the car frame at the other end via a winch unit.

Further, in an elevator installation method according to a fourth aspect of the present invention, the winch unit according to claim 1 is installed at the top of a car or hoistway of an existing elevator, and the winch unit is driven to move the existing car up and down to move up and down. Equipment on the road and equipment in the machine room will be removed, replaced and newly installed.

[0014]

In the first aspect of the present invention, the winch unit mounting metal is provided with the fastening holes for the winch units and the fastening holes for the machine room or the hoistway. It can be fastened to and can be carried using a dolly and suspension fittings.

Further, in the second aspect of the invention, a plurality of winch units driven by a motor whose slippage increases according to a load are provided, and a plurality of ropes fixed to a machine room or a hoistway are respectively routed through the winch units. Then, the winch units were connected to the car frame via elastic bodies, respectively. Since the winch winding speed increases, the elastic body expands and a load acts on the winch units. , The speed gradually decreases and becomes the same speed as other winch units.

Further, in the third aspect of the invention, a rope is wound around a pulley installed in a machine room or a hoistway, one end of which is connected to a car frame, and the other end is hung down in the hoistway via a winch unit. As a result, the car frame is roped 2: 1.

In the fourth aspect of the invention, the winch unit is installed at the top of the car or hoistway of the existing elevator, and the winch unit is driven to move the existing car up and down to perform hoistway work and machine room work. Therefore, both works can proceed in parallel.

[0018]

【Example】

Example 1. 1 and 2 are views showing an embodiment of the first and fourth inventions of the present invention, FIG. 1 is a perspective view of a winch unit, and FIG. 2 is a perspective view showing a usage form of the winch unit. Portions similar to those are denoted by the same reference numerals (the same applies to the following embodiments). Further, the same reference numerals in each embodiment indicate the same or corresponding parts.

In FIG. 1, (21) is a motor for driving a friction winding type endless winch, (22) is the same gear case, and (23) is an attachment which is connected to the gear case (22) by a pin (24). Use gold to tighten the fastening holes (23a) to (23a)
have c). (25) is fixed to the mounting plate (23) and the motor (2
Frame body that surrounds and protects 1), (26) is frame body (25) and mounting metal (23)
The dolly mounted on the, (27) is a mounting metal having a fastening hole (27a) that fits the fastening hole (23a), the hanging metal fitting (28) is fixed, and the above-mentioned members (21) to (28) Winch unit (3
0) is configured.

Next, a usage pattern of the winch unit (30) will be described with reference to FIG. Two winch units (30) are fixed on the main installation machine base (11) with bolts (not shown) using the fastening holes (23b) of the mounting metal (23). Further, the work floor (5) is installed on the upper part of the car frame (4), and the hanging metal fittings (32) are fixed to both ends of the upper beam of the car frame (4) with bolts (not shown). One end of the rope (9) is connected to the suspension fitting (32), the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) hangs down the hoistway.

Now, when electric power is supplied to the motor (21) from a control panel (not shown) installed in the machine room, the winch unit (30) drives the rope (9), thereby the car frame (4). Moves up or down and work is performed on the work floor (5). Since the winch unit (30) has the carriage (26), it is easy to carry in and carry out. In addition, attach the mounting metal (27) to the mounting metal (23) of the winch unit (30) by tightening the fastening holes (23a) (27a).
The winch unit (30) can be easily used for hoisting to the upper part of the hoistway or to the machine room and for centering the mounting by using the hanging metal fittings (28). It can also be used as a hoisting device for loading equipment.

Example 2. FIG. 3 shows the first and fourth aspects of the present invention.
It is a figure which shows other Example of invention, and is a usage mode perspective view of a winch unit. Tethered beam on the machine base (11) for main installation
Fix (34) and attach rope stoppers (35) to both ends.
Further, the working floor (5) is installed on the lower part of the main car frame (4), and two winch units (30) are fixed to both ends of the upper beam of the car frame (4). Connect one end of the rope (9) to the rope stopper (35),
The other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) is hung in the hoistway. The raising / lowering operation of the car frame (4) is as described above (the same applies to the following embodiments).

Embodiments 3 to 7. 4 to 8 are views showing other embodiments of the first and fourth inventions of the present invention, and are perspective views showing a mode in which two winch units are combined and used. Example 3. In FIG. 4, a rope stop beam (37) is fixed on the machine base (11) for main installation, and a rope stop (35) is attached to the central portion thereof. Further, the work floor (5) is installed on the upper part of the main installation car frame (4), and the rope stopper (38) is fixed to the center part of the upper beam of the car frame (4). The winch units (30) are fastened to each other by the fastening holes (23c) of the two mounting members (23) and connected to the rope stopper (38) by the rope (39). This is because if the winch unit (30) is installed in the work floor (5), the work space becomes narrower and work is hindered.

[0024] One end of the rope (9) is connected to the rope stopper (35), the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) hangs down the hoistway. .

Example 4. In Fig. 5, the machine table for main installation (1
Install two winch units (30) fastened together on 1). Further, the work floor (5) is installed on the upper part of the car frame (4), and the rope stopper (38) is fixed to the central part of the upper beam of the car frame (4). One end of the rope (9) is connected to the rope stopper (38), the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) hangs down in the hoistway.

Example 5. In FIG. 6, the machine base for main installation (1
Fix the rope stop beam (37) on the top of 1) and attach the rope stop device (35) to the center part. In addition, the work floor (5) is installed under the main installation car frame (4). The two winch units (30) fastened together are sandwiched by the mounting metal (41) made of grooved steel on the upper beam of the car frame (4). Rope to the rope stop (35)
One end of (9) is connected, the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) is hung in the hoistway.

Example 6. In FIG. 7, the machine base for main installation (1
At a position avoiding the hoisting machine for permanent installation (not shown) above 1),
Install two winch units (30) fastened together. Then, the winch unit (30) is supported by the support (43).
One end of is fixed, a shaft (44) is provided at the other end of the support body (43), and a pulley (45) is attached to this. The support body (43) is configured so that the distance from the winch unit (30) to the shaft (44) can be adjusted. Further, the work floor (5) is installed on the upper part of the main installation car frame (4), and the rope stopper (38) is fixed to the center part of the upper beam of the car frame (4).

One end of the rope (9) is connected to the rope stopper (38), and the other end is wound around the winch unit (30) through the pulley (45), and the rope (9) exiting from the winch unit (30). ) To the hoistway.

Example 7. In FIG. 8, the machine base for main installation (1
A rope stop beam (37) is fixed on 1), a rope stop device (35) is attached to the central portion, and two winch units (30) fastened to each other are suspended. Also, a cage frame for permanent installation
A work floor (5) is installed on the upper part of (4), and a rope stopper (38) is fixed to the center of the upper beam of the car frame (4). One end of the rope (9) is connected to the rope stopper (38), the other end is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) hangs down in the hoistway.

Example 8. FIG. 9 also shows the first and fourth aspects of the present invention.
FIG. 7 is a perspective view of a winch unit in use according to another embodiment of the invention. A winch unit on the machine base (11) for main installation
Install one of (30), and another one on top of it as a reinforcement (47)
Will be stacked and installed. Further, the work floor (5) is installed on the upper part of the car frame (4), and the rope stopper (38) is fixed to the central part of the upper beam of the main car frame (4). Rope (9) to rope stopper (38)
One end of the winch unit (30) is wound around the winch unit (30), and the rope (9) coming out of the winch unit (30) is hung in the hoistway.

The winch unit (30) (30) is, for example, as shown in FIG.
Since they are installed closer to each other than in the case of (3), the intervals of the ropes (9) wound around them are narrowed, and it is possible to sufficiently cope with the case where the rope hole provided in the floor of the machine room is small.

Example 9. 10 and 11 show the first to the first embodiments.
FIG. 10 is a diagram showing a control device used in Example 8, FIG. 10 is an electric circuit diagram, and FIG. 11 is a characteristic curve diagram of a motor. In FIG. 10, reference numeral (15) is a power breaker, which is connected to the primary side terminals R, S, T of the inverter unit (53) through the overspeed detection relay (52). The motor (21) of the winch unit (30) is connected to the secondary side terminals U, V, W of the inverter unit (53). (54) is a current detector for detecting the current of the motor (21).

Reference numeral (55) is a speed command calculation device connected to the current detector (54), which is connected to the inverter unit (53) and the operation switch (56). Reference numeral (57) is a speed detector provided on the motor (21), and reference numeral (58) is an overspeed detector connected to the speed detector (57) and the overspeed detection relay (52).

Next, the operation of this embodiment will be described with reference to FIG. FIG. 11 shows the relationship between torque (lifting capacity) and rotation speed with respect to the power supply frequency of a general motor (21). When the power supply frequency is low, the rotation speed is low and the torque is high. As the power supply frequency increases, the rotation speed tends to increase and the torque tends to decrease. This embodiment utilizes the above characteristics, and is intended to move the main car frame (4) up and down at a low speed when the load is heavy and at a high speed when the load is light.

The contacts of the overspeed detection relay (52) are normally closed, and when the power breaker (51) is turned on, commercial power is supplied to the inverter unit (53). Here, when the operation switch (56) is operated, the speed command calculation device (55) inputs a signal from the current detector (54) and generates a pattern voltage that gradually increases from a low frequency. with this,
The inverter unit (53) is controlled, the motor (21) is driven, and the car frame (4) moves up and down.

At this time, the motor (2
Increase the load current so that the power value of 100% of the lifting capacity in 1) is not exceeded. When the lifting capacity reaches 100%, the pattern voltage is fixed to a constant value. When the operation of the operation switch (56) is stopped, the pattern voltage is lowered and stopped. The speed of the motor (21) depends on the speed detector (5
When it is detected by 7) and this exceeds the maximum speed, it is detected by the overspeed detector (58), and the coil of the overspeed detection relay (52) is deenergized to cut off the power supply.

Example 10. 12 and 13 are views showing an embodiment of the second invention of the present invention, FIG. 12 is a front view of a main part, and FIG. 13 is a characteristic curve diagram of load and speed of a motor.
In this embodiment, the main car frame (4) is heavy and a plurality of winch units (30) (four in the figure) are provided. Connect one end of the rope (9) to the rope stopper (35) fixed to the main machine base (11), and the other end to the winch unit (30).
Rope (9) introduced into the winch unit (30)
Hangs down the hoistway.

The winch unit (30) includes an elastic body (6
Each is connected to the upper part of the car frame (4) via 1). Reference numeral (62) is a guide rail for guiding the raising and lowering of the car frame (4).

FIG. 13 shows the relationship between the load and speed (slip) of a general motor (21), and it can be seen that the speed becomes slower as the load increases. This embodiment utilizes this characteristic. The load applied to each of the four winch units (30) is 1/4, but if the winding speed of one winch unit (30) becomes faster, the elastic body (61) of the winch unit (30) will be increased. Expands and the winch unit (30) is loaded. Therefore, the speed gradually decreases and becomes the same as the other winch units (30). In this way, by driving a plurality of winch units (30) at the same time, it is possible to deal with a heavy main car frame (4).

Example 11. FIG. 14 is a view showing an embodiment of the third invention of the present invention, and is a perspective view of a use form of a winch unit. A rope stop beam (34) is fixed on the main machine base (11), and a pulley (64) is provided on it. Also, a cage frame for permanent installation
A work floor (5) is installed at the bottom of (4), and winch units (30) are fixed to both ends of the upper beam of the car frame (4). Connect one end of the rope (9) to the center of the upper beam of the car frame (4), wrap the other end around the pulley (64), then wrap it around the winch unit (30), and then from the winch unit (30). The rope (9) that came out is hung down to the hoistway via the return wheel (65) and fixed under the car frame (4).

In the eleventh embodiment, since the car frame (4) is roped by 2: 1, the speed of the car frame (4) is half that of the other embodiments, but the winch unit (30) is lifted. Even with the same heavy capacity, it is possible to raise and lower the car frame (4) that is twice as heavy.

[0042]

As described above, according to the first aspect of the present invention, the attachment metal of the winch unit is provided with the fastening holes for the winch units, and the fastening holes for the machine room or the hoistway, and the bogie and the suspension truck are provided. Since it is attached, winch units can be fastened to each other, can be transported using a dolly and a cart, and can be easily installed in a car frame, machine room, etc., and the limitation due to the lifting process can be eliminated There is.

Further, in the second invention, a plurality of winch units driven by a motor whose slippage increases according to a load are provided, and a plurality of ropes fixed to a machine room or a hoistway are respectively routed through the winch units. The winch unit is connected to the car frame via the elastic body, so that if one winch winding speed increases, the elastic body expands and a load acts on this winch unit. , The speed gradually decreases to the same speed as other winches, and even if the car frame weight is heavy, there is an effect that it can easily cope with it.

Further, in the third invention, the rope is wound around the pulley installed in the machine room or the hoistway, one end of which is connected to the car frame, and the other end is hung down in the hoistway through the winch unit. Therefore, the car frame is roped 2: 1, and even if the winch unit has the same lifting capacity, it is possible to raise and lower the car frame having a double weight.

In the fourth aspect of the invention, the winch unit is installed in the car or the upper part of the hoistway of the existing elevator, and the winch unit is driven to elevate the existing car to perform hoistway work and machine room work. Both operations can proceed in parallel, which has the effect of shortening the elevator installation time.

[Brief description of drawings]

FIG. 1 is a perspective view of a winch unit showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the winch unit of FIG. 1 in use.

FIG. 3 is a perspective view of a winch unit in use according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a winch unit in use according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a winch unit in use according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view of a winch unit in use according to a fifth embodiment of the present invention.

FIG. 7 is a perspective view of a use form of a winch unit showing a sixth embodiment of the present invention.

FIG. 8 is a perspective view of a winch unit in use according to a seventh embodiment of the present invention.

FIG. 9 is a perspective view of a winch unit in use according to an eighth embodiment of the present invention.

FIG. 10 is an electric circuit diagram showing Embodiment 9 of the present invention.

11 is a characteristic curve diagram of the motor of FIG.

FIG. 12 is a front view of the essential portions showing Embodiment 10 of the present invention.

13 is a characteristic curve diagram of load and speed of the motor of FIG.

FIG. 14 is a perspective view of a winch unit in use according to an eleventh embodiment of the present invention.

FIG. 15 is a vertical cross-sectional view showing a conventional elevator installation method.

[Explanation of symbols]

1 hoistway, 2 machine room floor, 4 car cage frame, 5
Work floor, 9 ropes, 11 main installation machine base, 21 motors, 23, 27 mounting metal, 23a-23c fastening holes, 2
5 frame, 26 carts, 28 suspension fittings, 30 winch units, 61 elastic bodies, 64 pulleys.

Claims (4)

[Claims] 1. A winch unit having an endless winch fixed to a frame body and driven by a motor, and a mounting metal, the winch unit for driving a rope by the winch to raise and lower a car frame in a hoistway, and the mounting method according to claim 1. A temporary winch device for elevator installation, in which gold is provided with fastening holes for the winch units and fastening holes for a machine room or the hoistway, and a bogie and a hanging metal fitting are attached to the winch unit. 2. A winch unit according to claim 1, wherein a plurality of winch units are provided, each of which is driven by a motor whose slippage increases according to a load, and one end of which is fixed to a machine room or a hoistway and the other end of which is the winch unit. A temporary winch device for elevator installation, which has a plurality of ropes that hang down in the hoistway via the winch unit and is connected to a car frame through elastic bodies. 3. A winch unit according to claim 1, which is mounted on a car frame, a pulley mounted on a machine room or a hoistway, one end of which is wound around the pulley and which is connected to the car frame and the other end of which is connected to the car frame. A temporary winch device for elevator installation comprising a rope connected to the car frame via a winch unit. 4. The winch unit according to claim 1 is installed in a car or an uppermost portion of a hoistway of an existing elevator, and the winch unit is driven to move the existing car up and down to remove equipment and machine rooms in the hoistway. Elevator installation method to remove, replace and newly install equipment.