JPH08198539A - Supporting fixture for speed governor performance testing motor in elevator - Google Patents

Abstract

PURPOSE: To provide a speed governor performance testing motor supporting means easily carried and fitted to the housing of a speed governor. CONSTITUTION: A supporting means 14 is constituted of a grip body 18 and a fixed body 21. The grip body 18 grips a motor 15 between mutually opposed bar-like bent members 19. The fixed body 21 supports the grip body 21 and is removably fixed to the housing 13 of a speed governor 10. The motor 15 is drawn to the fixed body 21 side by an energizing means 25. The driving roller 16 of the motor 15 is pressed to a sheave 11 by this drawing, and the movement of the motor 15 caused by this drawing is absorbed by the elastic deformation of the bent members 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor support for a speed governor operation test in an elevator.

[0002]

2. Description of the Related Art In elevators, it is obligatory to install a governor that operates a stopping means of the elevator car when the ascending / descending speed of the elevator car exceeds a predetermined set speed.
The speed governor 101 generally includes a hoistway 10 with a hoistway 103 of an elevator car 102 separated by a ceiling wall, as shown in FIG.
No. 3 is installed in the machine room 104. Hoistway 103
A speed governing rope 107 is wound between the return sheave 105 installed on the floor surface of the vehicle and the sheave 106 of the speed governor 101, and the speed governor 101 is connected to the speed governing rope 107. The ascending / descending speed of the elevator car 102 is detected by the rotation of the sheave 106. When the rotation speed of the sheave 106 exceeds the first set speed, the governor 101 operates so as to stop the power supply to the hoist 108, and the rotation speed of the sheave 106 is higher than the first set speed. When the speed exceeds the second set speed, the governor 101 operates to operate a known safety device,
The elevator car 102 is prevented from being excessively moved up and down.

As described above, the speed governor operation test is performed to confirm that the speed governor operates reliably at the first and second set speeds. Conventionally, in the governor operation test,
For example, by raising the elevator car 102, the sheave 10
The fixing means 109 prevents the speed regulating rope 107 descending from 6 from passing through the ceiling wall. The elevator car 10 is attached to the speed-control rope 107 that is prevented from passing through.
As a result of the rise of 2, the propulsive force from the rear acts, and the speed-adjusting rope 107 is loosened upward so as to be separated from the sheave 106.

The sheave 106 released from the contact with the speed regulating rope 107 in this way is rotated by the electric motor 110 while gradually increasing the rotational speed. The rotation speed of the sheave 106 is measured by the tachometer 111, and it is read from the tachometer 111 how fast the operation of the governor 101 that should be performed at the first and second set speeds is actually performed.

[0005]

In testing the operation of the speed governor, an electric motor held by an operator is pressed against the outer peripheral edge of the sheave to drive the sheave to rotate. But,
When the electric motor is supported by hand in this way, uneven rotation acceleration occurs due to the friction between the drive roller of the electric motor and the sheave, and at the moment the speed governor operates, an accurate rotational speed value is displayed by the tachometer. It was difficult to read.

Therefore, as disclosed in Japanese Utility Model Publication No. 5-20755, it has been proposed to fix the electric motor to the housing of the speed governor via a support. This support includes a fixed body that is fixed in advance to the housing of the speed governor, and a movable body to which the electric motor is fixed is slidably supported on the fixed body. A biasing force is applied to the moving body in a direction in which the drive roller is pressed against the outer peripheral edge of the sheave. Therefore, the drive roller always contacts the outer peripheral edge of the sheave with a constant frictional force, and uneven rotation acceleration tends to be eliminated.

However, in this support, since the urging force is constantly applied to the moving body, it is necessary to mount the electric motor while holding the moving body against the urging force, which is troublesome. In addition, since the fixed body is completely fixed to the governor housing, it not only requires extra space around the governor, but also increases the urging force when the diameter of the drive roller is changed. It is difficult to adjust the strength.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a support for a motor for a speed governor operation test, which is easy to carry and attach to a housing of the speed governor.

[0009]

In order to achieve the above object, according to the present invention, a sheave of a speed governor is rotated between rod-shaped bending members facing each other by using the elastic force of these bending members. A gripping body for gripping the driven electric motor, a fixed body that supports the gripping body and is detachably fixed to the housing of the speed governor, and a biasing unit that exerts a biasing force that pulls the electric motor toward the fixed body, By this pulling, the driving roller of the electric motor is pressed against the sheave, and the movement of the electric motor due to the pulling is absorbed by the elastic deformation of the bending member. .

[0010]

According to the above construction, when carrying out the operation test of the governor, the electric motor is supported by the grip portion of the support,
The fixed body of the support tool on which the electric motor is supported is fixed to the housing. At that time, the drive roller of the electric motor is pressed against the sheave under a constant pressure by the biasing force of the biasing means.
Further, even when the position of the electric motor fluctuates depending on the size of the sheave, it is easily absorbed by the urging force of the urging means and the elastic deformation of the bending member.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to FIGS. 1 and 2, an elevator governor 10 is installed in a machine room of the elevator. The speed governor 10 includes a sheave 11 to which an ascending / descending speed of an elevator car is transmitted, and a housing 13 fixed to a floor 12 of a machine room of the elevator to rotatably support the sheave 11. When it is determined that the raising / lowering speed of the elevator car exceeds the predetermined set speed due to the rotation of the sheave 11, the speed governor 10
Activates the stopping means of the elevator car.

An electric motor 15 for speed governor operation test is attached to the housing 13 of the speed governor 10 through a support 14 according to the first embodiment of the present invention. This electric motor 15
Drives the sheave 11 to rotate by bringing the drive roller 16 at the tip of the rotating shaft into contact with the outer periphery of the sheave 11. The rotation speed of the electric motor 15 is controlled by the controller 17, and the rotation speed of the sheave 11 is set to an arbitrary value through the control of the rotation speed. The controller 17 is preferably one that the operator can operate with one hand when installed on the floor 12.

The support tool 14 includes a grip body 18 for gripping the electric motor 15. The grippers 18 are opposed to each other 1
The electric motor 15 is sandwiched between the pair of rod-shaped bending members 19 by using the elastic force of these bending members 19. A pair of front and rear annular bands 20 are fitted around the rotation axis of the electric motor 15 around the electric motor 15, and these annular bands 20 are connected to the deformation input portion 19a of the bending member 19 extending along the rotation axis of the electric motor 15. Touching. Therefore, when the electric motor 15 is pressed against the deformation input portion 19a, the deformation input portions 19a move in the direction away from each other along the smoothly curved outer peripheral surface of the annular band 20.

Both bending members 19 of the gripping body 18 extend along the side surface of the housing 13 to the lower edge of the housing 13. This part is detachably fixed to the housing 13,
It functions as the fixed body 21 according to the present invention. That is, the fixed body 21 has the bending engagement portion 2 at the lower edge of the housing 13.
After engaging 2 with each other, the engaging member 23 that engages with the upper edge of the housing 13 is screwed through the fastener 24. By moving the screwing position, it is possible to cope with a change in the height of the side wall of the housing 13.

A biasing means 25 is provided between the electric motor 14 supported by the gripping body 18 and the fixed body 21 to exert a biasing force for pulling the electric motor 15 toward the fixed body 21. The urging means 25 is configured as, for example, an urging spring having one end connected to the annular band 20 and the other end connected to the engagement piece 26 passed between the bending members 19. The drive roller 16 of the electric motor 15 is pressed against the sheave 11 by the attraction of the biasing spring 25. At that time, the electric motor 15
The vertical movement of the bending member 19 is absorbed by the elastic deformation of the bending members 19 in the direction in which they are separated from each other.

Next, the operation of this embodiment will be described. The operation test of the speed governor of the elevator is performed by driving the sheave of the speed governor at an arbitrary rotational speed using an electric motor and reading the rotational speed at which the speed governor has performed the prescribed operation with a tachometer. Be seen. An electric motor must be installed to drive the governor in rotation. The procedure will be described below.

First, an annular band 20 is provided on the outer periphery of the electric motor 15.
Inset. After connecting one end of the biasing spring 25 to the annular band 20, the electric motor 15 is sandwiched between the bending members 19. At this time, since the bending member 19 is provided with the elastic force, the bending member 19 can be pressed against the outer periphery of the electric motor 15 and allow a slight change in size.

Subsequently, while the drive roller 16 of the electric motor 15 is brought into contact with the outer periphery of the sheave 11, the fixed body 21 of the support tool 14 is provided along the side surface of the housing 13, and the bending engagement portion 22 at the lower end of the support tool 14 is attached. The lower edge of the housing 13 is engaged. In this state, the engaging member 23 is placed along the bending member 19, and the engaging member 23 is fixed by using the fastener 24.
Screw to 9. As a result, the support 14 on which the electric motor 15 is set is attached to the housing 13. Finally, the other end of the biasing spring 25 is hooked on the engaging piece 26.
The drive roller 16 of the electric motor 15 is pressed against the sheave 11 by the urging force of the urging spring 25. Even if the position of the electric motor 15 moves due to this pressing, the movement of the electric motor 15 is absorbed by the elastic deformation of the bending member 19.

As described above, the electric motor 15 includes the biasing spring 25.
The driving roller 16 contacts the outer circumference of the sheave 11 under a constant pressure at the same time because the driving roller 16 is positioned by the balance between the urging force and the elastic force of the bending member 19. With this, the electric motor 1
The rotation of the sheave 11, which is rotationally driven by 5, is stabilized, and the rotation speed is reliably detected in the governor operation test.

When the operation test is completed, the biasing spring 2
5 is removed and the engagement of the engagement member 23 is loosened, the support 14
Is separated from the housing 13. Finally, when the electric motor 15 is pulled out from the grip body 18, the electric motor 15 is removed from the speed governor 10, and the support tool 14 and the electric motor 15 can be carried separately. Since the support tool 14 is composed of a rod-shaped member, the support tool 14 is lightweight and can be carried very easily.

FIG. 4 shows a supporting member of a speed governor operation test electric motor according to a second embodiment of the present invention. A characteristic of this second embodiment is that the holding body 31 and the fixed body 32 of the support tool 30 are separated. The grip body 31 is connected to the tip of the fixed body 32 via the fastener 24. Gripping body 31
An engaging portion 31a is formed at the lower end of the fixing body 31, and the bending engaging portion 22 of the fixed body 31 and the engaging portion 31a of the grip body 31 cooperate to fix the fixed body 32 to the housing 13. With such a configuration, the support tool 30 can be carried in a more compact form. In FIG. 4, the same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 5 shows a support for a speed governor operation test electric motor according to a third embodiment of the present invention. A characteristic of the third embodiment is that the grip body 41 of the support tool 40 is attached to the fixed body 42 in an extendable manner. The grip body 41 and the fixed body 42 are screwed to each other via a connector 43. With such a configuration, the distance between the bending engagement portion 22 of the fixed body 42 and the drive roller 16 of the electric motor 15 is variable, so that sheaves of different sizes can be easily accommodated. In FIG. 5, the same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

[0024]

As described above, according to the present invention, since the biasing means can be operated after the electric motor is set on the speed governor, the mounting of the electric motor is very simple. Further, even if the position of the electric motor fluctuates, it can be easily absorbed by the urging force of the urging means and the elastic deformation of the bending member, so that the drive roller of the electric motor is kept under a constant pressure regardless of the type of housing. Can be contacted with.

[Brief description of drawings]

FIG. 1 is an overall schematic side view of a speed governor to which a motor for speed governor operation test is attached by a support tool according to a first embodiment of the present invention.

FIG. 2 is an overall schematic front view of the speed governor as seen from the direction 2 of the arrow in FIG.

FIG. 3 is an exploded perspective view of a support tool.

FIG. 4 is an overall schematic side view of a speed governor to which a motor for speed governor operation test is attached by a support tool according to a second embodiment of the present invention.

FIG. 5 is an overall schematic side view of a speed governor to which a motor for speed governor operation test is attached by a support tool according to a third embodiment of the present invention.

FIG. 6 is an overall schematic diagram of an elevator showing a conventional speed governor operation test.

[Explanation of symbols]

10 speed governor, 11 sheave, 13 housing, 14,
30,40 Motor support for speed governor operation test, 15
Electric motor, 16 drive rollers, 18, 31, 41 gripping body, 19 rod-shaped bending member 21, 32, 42 fixed body,
25 Biasing means.

Claims (1)

[Claims] 1. A gripping body for gripping an electric motor for rotationally driving a sheave of a speed governor, and a gripping body for supporting the gripping body and controlling the speed between elastic rod-shaped bending members opposed to each other. The machine is provided with a fixed body that is detachably fixed to the housing of the machine, and a biasing means that exerts a biasing force that attracts the electric motor to the fixed body side, and by this pulling, the drive roller of the electric motor is pressed against the sheave and A support for an electric motor for a speed governor operation test in an elevator, characterized in that movement is absorbed by elastic deformation of a bending member.