JPH03223079A - Manual operating device for elevator hoist - Google Patents

Abstract

PURPOSE:To reduce the cost with a simple structure and enable the manual operation of a hoist from outside of an elevator passage by pushing the elastic member with an operating member to give the elasticity of the rotation to a rotating member unified with a rotary shaft through the elastic member. CONSTITUTION:The brake is cancelled by an operating member, and a projection is pushed through an elastic member 45 to give the elasticity of the rotation to a rotating member 42. Since a worm reduction gear 9 usually having a self- lock mechanism does not transmit the force of the cage side to the motor 8 side, a rotary shaft 8a is not rotated with only cancellation of the brake. But, when the elasticity of the rotation is given to the rotary shaft 8a through the rotating member 42 in the rotating direction at the time of lowering the cage, the lowering force of the cage with its dead weight is reversely transmitted to the motor 8 side to rotate the rotary shaft 8a. As a result, the cage can lower continuously with the dead weight.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a manual operating device for an elevator hoisting machine. This invention relates to a manual operating device for an elevator hoisting machine for releasing the brake of the hoisting machine and manually lowering a car.

[Prior Art] FIG. 4 is a block diagram showing a conventional elevator having a hoisting machine 3 similar to that shown in, for example, Japanese Utility Model Application Publication No. 54-10669.

In the figure, code (1) is the hoistway, and (2) is the hoistway (1).
), (3) is a rope whose middle part is wrapped around the return wheel (2), (4) is a rope (3).
) is suspended from one end of the basket, (5) is a rope (3
) The other end is a winding machine, and (6) is a buffer.

FIG. 5 is a side view showing the winding 11 (5) of FIG. 4,
In the figure, (7) is a rope winding section, and (8) is a manual operation device connected to the rope winding section (7) via a worm reducer (9).

FIG. 6 is a side view showing the manual operating device (10) in FIG.
a) and a disc bat that rotates as one body; (12> is a plackage that is fixed to a motor (8) so as to surround the rotating shaft (8a) and the disc bat (11); (13)
〉 is a brake armature that is pressed against the lower part of the disc butt (11) by being biased by a plurality of springs (14) provided on the brake gear (12), and (15) is fixed to the upper part of the brake gear (12). The first bolt (16) has a release lever attached to the first bolt (15) at one end, and the release lever (17) has a proximal end attached to the first bolt (15).
6), the middle part passes through the upper part of the brake armature (12), and the tip part is fixed to the brake armature (13), and (18) is attached to the end of the rotating shaft (8a). It is a hand-wound handle.

In the conventional elevator configured as described above, the driving force of the motor (8) is transmitted to the rope winding section (7) via the warp 1 and the speed reducer (9), so that the rope winding The portion (7) rotates forward and backward, and as a result, the car (4) descends 57 times in the hoistway (1).

On the other hand, if a power outage or malfunction occurs during the above operation and the Kagoku 4) stops between floors, a worker enters the hoistway (1) and operates the manual operation device (10) to control f% L, passengers, etc. It is necessary to raise and lower the car to a position where it can be rescued.

In this case, first release the handle part of the bar (16) and
Push down as shown by arrow A in the figure. This results in
The brake armature (13) is moved down against the force of the spring (14) and separated from the disc band (11), resulting in a brake release state. In this state, by rotating the manual winding handle (18) in the forward and reverse directions, the rope winding section (7) can be rotated in the forward and reverse directions, and as a result, the basket (4
) can be raised and lowered manually.

However, such a manual operation device (10) is dangerous because it requires the worker to enter the hoistway (1), and depending on the stopping position of the car (4), the worker may not be able to enter the hoistway (1). ), and manual 73 f
I had a point where I became unable to perform tE.

On the other hand, as a conventional device that allows the above-mentioned manual operation without the worker entering the hoistway (1), the author of the present invention has previously proposed the device shown in FIGS. 7 and 8. This figure shows a manual operation device for an elevator hoist.

In the figure, reference numeral (21) denotes an angled release plate attached to the third bolt (22) and the second bolt (17) that are installed at the top of the brake gauge (12);
(23) is a passive bevel gear attached to the end of the rotating shaft (8a).

(24) is a bearing installed in the center of the side surface of the release plate (21), (25) is a rotation transmission shaft supported by the bearing (24) so as to be rotatable and axially movable; (25) has a drive side bevel gear (26) that meshes with the driven side bevel gear (23) attached to one end, and a spring receiver (27) at the other end.

The rotation transmission shaft (25) also includes a bearing (24) and a spring bearing (
27), the coil spring (28) provided between
It is biased to the right in the figure.

(29) is an inspection port installed on the platform wall at the bottom of the platform, (3
0) is the door of the inspection port (29), (31) is the door of the inspection port (29)
This is a handle shaft inserted into the hoistway (1) from above, and the tip of this handle shaft (31) is connected to the rotation transmission shaft (25).
It is removably attached to the engaging part ([IJ not shown)].

With such a manual operation device, when the car (4) stops between floors, the fIE worker first opens the door (30) and inserts the handle shaft into the hoistway (1) through the inspection opening (29). (31)
Insert. Then, the tip of the handle shaft (31) is engaged with the 1st joint of the rotation transmission shaft (25), and then the 1st rotation transmission shaft (25) is connected to the coil spring 28 via the handle shaft (31). ) to the left in the diagram. Thereby, the driving side bevel gear (26) meshes with the passive side bevel gear (23).

After that, when the handle portion of the handle shaft (31) is pulled up in the direction of the 7121 arrow B, the release plate (21) rotates around the third bolt (22), and the brake armature (13
> is pushed down against the spring (14), and this causes the brake armature (13) to move towards the disk path (1).
1), the brake is released.

When the hashidle shaft (31) is rotated forward and backward in the second state, rotational force is transmitted through the rotation 1 transmission shaft (25), the drive side bevel gear (26), and the driven side wheel tB wheel 23). The lobe winding section (7) is rotated forward and backward, so that the worker can
1) The car (4) can be raised and lowered manually without going inside.

[Problems to be Solved by the Invention] In the conventional manual operating device configured as described above, there is a problem in that the worker can manually raise and lower the car (4) without entering the hoistway (1). Since the bevel gears (23) and (26) on the driven and driving sides are required, j7
The problem was that the T.3% was complicated and the whole thing was expensive.

This invention was made with the aim of solving the above-mentioned problems, and has a simple structure that does not require precision parts such as bevel gears, making the overall cost low.
An object of the present invention is to obtain a manual operating device for an elevator hoisting machine, which allows the hoisting machine to be manually operated from outside the hoistway.

[Means for Solving the Problems] A manual operation device for an elevator hoisting machine according to the present invention includes a rotating member having a plurality of protrusions so as to rotate integrally with a rotating shaft of a motor, and A resilient member is provided in the vicinity of the rotating member, which presses the protrusion with the operating member to give rotational momentum to the rotating member.

[Function] In this invention, the operating member presses the protrusion through the resilient member to give rotational momentum to the rotating member, thereby rotating the rotating shaft of the motor and lowering the car by its own weight. let

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a hoisting machine having a manual operation device according to an embodiment of the present invention, FIG. 2 is a plan view showing an enlarged main part of FIG. 1, and FIG. It is a side view, and the same or equivalent parts as in FIGS. 4 to 8 are designated by the same reference numerals 3f1, and their explanations will be omitted.

In the figure, the reference numeral (41) indicates the second and third bolts (17) facing the upper surface of the bushing (12).
, (22) is an angled release plate attached to the upper end portion of the release plate (41), and a rotating shaft (8a) is loosely passed through the release plate (41). (42) is a plurality of protrusions (42a) fixed to the end of the rotating shaft (8a) and protruding in the radial direction.
It is a gear-like force rotating member having a rotation member (42
) rotates as one body with the rotating shaft (8a).

(43) is a mounting tube attached to the center of the surface of the release plate (41) facing the inspection port (29); (44) is the inspection port (29);
29) into the hoistway (1), and the tip is removed from 11.
' An operating member that is removably inserted into the cylinder (43), and this operating member (44) is inserted into the cylinder (44a) and this cylinder (44m) so as to be able to reciprocate in the axial direction. It consists of a pressing shaft (44b) and a coil spring (44c) that urges the pressing shaft (44b) to the right in the figure. Also,
The tip of the press fi (44b) penetrates the side surface of the release plate (11).

(45) is a resilient member whose base end is attached to the surface of the side surface of the release plate (41) facing the rotating member (42), and this resilient member (45) is pressed by the pressing shaft (44b). By being elastically deformed, the pressing part of the tip (
45a) presses the protrusion (42a) in the direction of rotation of the rotating member (42) when the car is lowered.

In the manual operation device configured as described above, when the car (4) stops between floors due to power outage or failure, the worker first opens the door (30) and accesses the hoistway through the inspection door (29). Insert the operating member (44) into (1). Then, the tip of the cylinder (44m) is inserted into the mounting tube (43), and the tip of the pressing shaft (44b) is passed through the four sides of the release plate (41). Pull up the handle in the direction of arrow C in Figure 1. As a result, the release plate (41) rotates around the third bolt (22), and the brake is released as in the conventional case.

In this state, press the pressing shaft (44b) with the coil spring (44c).
As a result, the middle part of the resilient member (45) is pressed by the tip of the pressing shaft (44b) and elastically deformed, and as a result, the pressing part (45a) of the resilient member (45) ) connects the protrusion (42a) to the rotating member (42).
Press in the direction of rotation.

In this way, the protrusion (42a)' (the pressed rotating member (42) is given momentum to rotate clockwise in the figure, and the rotating shaft (8d) is also given the same momentum. When the pressing shaft (44b) is released from the ridge that has given momentum, the pressing shaft (44b) returns to the right in the figure, and the shape of the resilient member (45) is also restored.

By the way, the worm reducer (9) usually has a self-locking function and is designed not to transmit the force of the cage (4) (!T!I) to the motor (8) side, so the brake If the brake is released, the rotating shaft (8a) will not rotate. However, as mentioned above, with the brake released, the rotating shaft (8a) will receive rotational momentum in the direction of rotation when the car (4> descends). When the car (4) tries to descend due to its own weight, the force is transmitted to the motor (8) side, and the rotating shaft (8)
a) rotates. As a result, the car (4) continuously descends due to its own weight.

If the brakes are applied so that the car (4) stops at an appropriate position, the operator can manually operate the car (4) without entering the hoistway (1), ensuring the safety of the passengers. It can be rescued.

Further, according to the above-mentioned manual operation device, manual operation can be performed using simple members such as the rotating member (42) and the resilient member (45) without using precision parts such as bevel gears. Since the structure can be simplified, the cost of the entire device can be reduced.

Note that the shape of the rotating member (42) is not limited to the above embodiment, and the shape and number of the protrusions (42a) are also not particularly limited.

Further, in the above embodiment, the rotating member (42) is connected to the rotating shaft (8a
), the rotating member (42) may be connected to the rotating shaft (8a) via a gear or the like.

Furthermore, the shapes of the release plate (41), the operating member (44), and the resilient member (45) are not limited to the above embodiments.

[Effects of the Invention] As discussed above, the manual operating device for an elevator hoisting machine of the present invention is provided with a one-rotation member so as to rotate integrally with the rotation shaft of the motor. A bouncy member is provided near the member, and by pressing the bouncy member with the operating member, the bouncy member gives rotational momentum to the rotating member, thereby causing the rotating shaft to rotate and the car to descend under its own weight. Therefore, without using precision parts such as bevel gears, the overall structure is simple and inexpensive, and the hoisting machine can be manually operated from outside the hoistway.

[Brief explanation of drawings]

Fig. 1 is a four side view showing an embodiment of the present invention, Fig. 2 is a plan view showing an enlarged main part of the 112I, Fig. 3 is a side view of Fig. 2, and Fig. 4 is a conventional elevator. - configuration diagram, 5th
The figure is a side view showing the hoisting machine shown in Fig. 4, Fig. 6 is a side view showing the manual operation device shown in Fig. 5, Fig. 7 is a side view showing a conventional example of a pond, and Fig. 8 is a side view showing the manual operation device shown in Fig. 7. FIG. In the figure, (1) is the hoistway, (4) is the cage, (5) is the visiting machine, (8) is the motor, (8a) is the rotating shaft, (42)
is a rotating member, (42a) is a protrusion, (=14) is an operating member, and (45) is a resilient member. In each figure, the same reference numerals indicate the same or equivalent force.

Claims (1)

[Scope of Claims] A hoisting machine for an elevator, which is provided in a hoisting machine installed in a hoistway, and for manually operating the rotation and brake of the hoisting machine by an operating member inserted from outside the hoistway. A manual operating device for a machine includes a rotating member having a plurality of protrusions and rotating integrally with a rotating shaft of a motor of the hoist, and a rotating member provided near the rotating member and pressed by the operating member. and an elastic member that presses the protrusion in the rotational direction so as to provide momentum for rotating the rotational member in the rotational direction when the car is lowered. Manual operating device for the machine.