JPH042949Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator hoisting device, and particularly relates to a manual handle mounting structure for manually moving an elevator in the event of a power outage or failure.

[Conventional technology]

An example of a conventional elevator hoisting device will be explained with reference to FIG. In the figure, 1 is a reducer having parallel shaft gears such as helical gears, 1a is a gear box, 1b is an input shaft, 1c is an intermediate shaft, 1d is an output shaft, and 2 is attached to the output shaft 1d. A drive sheave, 3 is a deflection sheave, 4 is wrapped around the drive sheave 2 and the deflection sheave 3, and has a cage (not shown) at one end (a side);
A counterweight at the other end (side b) (not shown)
are the connected main ropes. 5 is an electric motor connected to the input shaft 1b, and 6 is a brake device, both of which are provided on the same side of the reduction gear 1 as the drive sheave 2 is mounted. Further, 7 is a manual handle that is used in the event of a power outage or failure, and is removed during normal operation.

FIG. 10 shows another conventional example,
The electric motor 5 and the brake device 6 are provided on the opposite side of the drive sheave 2 with the speed reducer 1 in between, and the manual handle 7 is attached to the shaft end 5a of the electric motor 5. Note that the same reference numerals as in FIG. 9 indicate the same parts.

FIG. 11 also shows another conventional example,
8 is a worm shaft (input shaft) on which the electric motor 5 is attached;
A worm wheel 9 meshes with the worm shaft 8 and is connected to the driving sheave 2 via the output shaft 1d. 10 is a speed reducer, and the same reference numerals as in FIG. 9 indicate the same parts.

In the conventional devices shown in FIGS. 9 to 11 above, during normal operation, the elevator is driven by an electric motor 5 via a reduction gear 1 or 10, a driving sheave 2, and a main rope 4, and is driven by a brake device 6. Braked. Further, in the event of a power outage or failure, the brake device 6 is manually released and the manual handle 7 is rotated to drive the elevator.

[The problem that the idea aims to solve]

Incidentally, the machine room of an elevator is generally constructed with minimum dimensions in order to effectively utilize the space in the building, and therefore the equipment installed in the machine room is required to be as small as possible. On the other hand, driving sheave 2
The diameter of the main rope 4 cannot be made smaller because it is stipulated by law that the diameter must be set at least 40 times the diameter of the main rope 4 in order to prevent shortening of the life of the main rope 4 due to repeated bending. Therefore, in the conventional device shown in FIG. 9, it is necessary to prevent interference between the driving sheave 2 and the brake device 6 and to secure an appropriate distance A, so that the distance between the input shaft 1b and the output shaft 1d of the reducer 1 is set. Since B has to be made large, there is a drawback that the reducer 1 cannot be made smaller.

In addition, in the case of Fig. 10, the length C from the manual handle 7 to the driving sheave 2 is long, so it may not be possible to install it in the machine room (not shown), and even if it can be installed, it may not be possible to install it in the machine room (not shown). There are cases where the distance D between the side wall 11 and the manual handle 7 becomes so small that it becomes difficult to turn the manual handle 7. Furthermore, the manual handle 7 is connected to the shaft end 5a of the electric motor 5.
Since the shaft end 5a is not attached to the motor 5, a general-purpose motor without a protruding shaft end 5a cannot be used, and the motor 5 becomes expensive.

In the case of Fig. 11, as in the case of Fig. 10, the length E from the manual handle 7 to the deflection wheel 3 is long, so it may not be possible to install it in the machine room.
Moreover, even if it can be installed, the distance F between the machine room side wall 11 and the manual handle 7 may become very small, making it difficult to turn the manual handle 7.
Also, if you try to attach the manual handle 7 to the reducer 10 side of the worm shaft 8, there is a risk of interference with the deflection wheel 3 and the main rope 4 (dotted chain line in Figure 11), so the manual handle 7 is attached to the electric motor 5. This has the disadvantage that the electric motor 5 becomes expensive because a general-purpose electric motor without the shaft end 5a cannot be used.

[Means to solve the problem]

In this invention, the input shaft is extended to the outside of the gear box, and a helical bevel gear, hypoid gear, etc. (hereinafter referred to as a bevel gear, etc.) is installed at the tip of the input shaft, and a bevel gear that meshes with the above-mentioned bevel gear, etc. is attached to the manual handle. etc., and the elevator is operated manually by meshing the bevel gears, etc. of both.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a view corresponding to FIG. 10, and 20 is a bevel gear, etc. provided at the tip of the input shaft 1b extending outside the gear box 1a, 21 is a bevel gear, etc. that meshes with this bevel gear, etc., and the manual handle 22 is installed at the tip of the Reference numeral 23 denotes a guide for the manual handle 22, which is fixed to the gear box 1a, and the same reference numerals as in FIG. 10 indicate the same parts.

FIG. 2 is a diagram showing the engagement relationship between the manual handle 22 and the guide 23, and FIG. 3 is a diagram showing the engagement relationship between the manual handle 22 and the guide 23, and FIG.
FIG. As shown in the figure, the manual handle 22 has a shaft 22c consisting of a small diameter part 22a with a diameter d1 and a large diameter part 22b with a diameter d3, the large diameter part 22b has a handle part 22d, and the small diameter part 22a has a bevel gear, etc. 2
1 is fixed. Also, the guide 23 has a diameter
It has a circular hole 23a with a width d4 and an opening 23b with a width d2, and the relationship between each dimension d1 to d4 is d1<d2<d3.
<d4, but d3 and d4 have almost the same dimensions.

This embodiment has the above configuration, and the manual handle 22 is normally removed. In the event of a power outage or malfunction, insert the small diameter part 22a of the manual handle 22 into the circular hole 23a through the opening 23b, as shown by the arrow in FIG. 22b is fitted into the circular hole 23a, the bevel gears 20 and 21 are engaged with each other, the brake device 6 is released, and the manual handle 22 is rotated to drive the elevator. Furthermore, as mentioned above,
Since d2<d3, manual handle 22 is guide 2
Stable operation can be performed without being removed from 3.

As described above, according to this embodiment, the drive sheave 2 and the brake device 6 do not interfere with each other unlike the conventional example shown in FIG. 9, so that the reduction gear 1 can be downsized. Moreover, since the manual handle 22 is not attached to the electric motor 5, even if the distance D1 between the electric motor 5 and the machine room side wall 11 is small, the manual handle 22
There is no problem in the operation, and since the length C1 from the electric motor 5 to the driving sheave 2 can be shortened compared to the tenth length C, it can be installed even in a narrow machine room. Note that since a car is suspended from one end (a side) of the driving sheave 2, the a side of the driving sheave 2 corresponds to approximately the center position of the hoistway, and in many cases,
Since the machine room is provided directly above the hoistway, the a side of the driving sheave 2 is located approximately at the center of the machine room. Therefore, in the case of the embodiment shown in FIG. 1, the handle portion 22d of the manual handle 22 slightly protrudes to the side opposite to the electric motor 5 (downward in FIG. 1), but it is located close to the center of the drive sheave 2, that is, the machine room Therefore, there is no problem.

Figures 4 to 7 show the manual handle 22 and guide 2.
FIG. 4 is a view corresponding to FIG. 2, and FIG. 5 is a sectional view taken along the line -- of FIG. 4, and the same reference numerals as FIGS. indicate the same thing. This embodiment has a washer 24 that is slidably provided along a narrow diameter portion 22a of a manual handle 22, and a compression spring 25 is provided between this washer 24 and a bevel gear or the like 21. The relationship between the diameter d5 of the washer 24 and each dimension d1 to d4 is d1<d2
<d3<d4<d5.

This embodiment has the above-mentioned configuration, and is normally removed from the manual handle 2. In the event of a power outage or failure, the washer 24 is
Push toward the bevel gear etc. 21 side to compress the spring 25,
The small diameter portion 22a is inserted into the circular hole portion 23 through the opening portion 23b.
When the manual handle 22 is inserted into the inside A, the force of the spring 25 moves the manual handle 22 toward the bevel gear 20 of the reducer 1, and as shown in FIG. Large diameter part 2
2b fits into the circular hole 23a of the guide 23.

In this embodiment, the bevel gears 20 and 21 are engaged by the force of the spring 25, so as shown in FIG.
This has the effect that the meshing of the bevel gears 20, 21 is more reliable than in the embodiment shown in FIG.

FIG. 8 shows an embodiment in which the device of the present invention is used in a hoisting device having a worm gear, and the same reference numerals as in FIG. 11 and FIG. 1 indicate the same parts.

Also in the case of this embodiment, the electric motor 5 and the machine room side wall 11
Even if the distance F1 is small, there is no problem in operating the manual handle 22, and the distance E1 from the electric motor 5 to the deflection wheel 3 can be shortened compared to the length E in FIG. A general-purpose electric motor can be used as the electric motor 5.

In each of the embodiments described above, the manual handle 22 is attached to the side of the reducer 1, 10, but it may be attached to the upper part.

In addition, under normal operating conditions, bevel gears, etc.
0 and 21 are not engaged, so there are no problems with vibration, noise, etc., and there is no need to use lubricating oil.

[Effect of idea]

As explained above, according to the present invention, it is possible to provide an elevator hoisting device that can be installed even in a narrow machine room because the reducer can be downsized, and the manual handle can be easily operated. In addition, since a general-purpose motor without a shaft end protruding on the opposite-load side can be used as the motor, the cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of an elevator hoisting device showing an embodiment of the present invention, FIG. 2 is a diagram showing an embodiment of the invention showing the engagement relationship between a manual handle and a guide, and FIG. FIG. 4 is a diagram showing another embodiment of the present invention showing the engagement relationship between the manual handle and the guide, FIG. 5 is a sectional view taken along the -- line in FIG. 4, and FIGS. The figure is an explanatory diagram of the operation of FIG. 4, FIG. 8 is a partial sectional view of an elevator hoisting device showing another embodiment of the present invention, and FIGS. 9 to 11 are partial sectional views of a conventional elevator hoisting device. It is. 1,10...Reducer, 1a...Gear box, 1b...
...Input shaft, 1c...Intermediate shaft, 1d...Output shaft, 2
... Drive sheave, 3 ... Deflection sheave, 4 ... Main rope, 5
...Electric motor, 6...Brake device, 7,22...
Manual handle, 8... Worm shaft, 9... Worm wheel, 20, 21... Bevel gear, etc., 22a
...Small diameter part, 22b...Large diameter part, 22c...Shaft,
22d...Handle part, 23...Guide, 23a
...Round hole, 23b...Opening, 24...Washer,
25...Spring.

Claims (1)

[Claims for Utility Model Registration] A reduction gear, a sheave disposed on one side of the reduction gear and attached to the output shaft of the reduction gear, and a sheave disposed on a side other than the one side of the reduction gear, an electric motor attached to the input shaft of the reducer to drive the elevator; and an electric motor disposed on a side other than the one side of the reducer;
In this reducer equipped with a brake device that brakes the elevator via the input shaft, and a manual handle for manually driving the elevator in the event of a power outage or failure, the side opposite to the motor of the input shaft is connected to the A bevel gear or the like is provided at the tip of the gear box of the speed reducer, and the manual handle includes a shaft having a large diameter part and a small diameter part, and a handle part fixed to the large diameter part. The gear box includes a bevel gear or the like that meshes with the bevel gear or the like fixed to the tip of the small diameter portion, and the gear box further includes a circular hole portion having a diameter larger than the diameter of the large diameter portion, and a circular hole portion having a diameter larger than the diameter of the large diameter portion. an opening having a width smaller than the diameter of the small diameter part and larger than the diameter of the narrow diameter part, and a guide for supporting the manual handle so that the axis of the manual handle and the input shaft are perpendicular to each other. , Normally, the manual handle is removed from the guide, and in the event of a power outage or failure, etc., insert the small diameter part of the manual handle into the circular hole through the opening, and then insert the large diameter part into the circular hole. An elevator hoisting device characterized in that the manual handle is supported by the guide by being inserted into the guide, and the bevel gears and the like of the two engage with each other to drive the elevator.