JPS6060384A - Electrically driven revolving apparatus permitting manual operation - Google Patents

Abstract

PURPOSE:To permit two-directional revolution of normal and reverse revolution even through manual operation by installing a mounting and demounting mechanism for releasing a connecting member for connecting a driving gear and a driving ring. CONSTITUTION:When an output shaft 6-a is manually revolved, a flush hole 12 formed onto an intermediate ring 8 pushes-up a spherical body 11 fixed onto a driving gear 5 connected to a motor 1, since the driving gear 5 can not revolve. By the above-described operation, a connecting member 9 inserted into a cap hole 10-a formed on the driving gear 5 is released. Therefore, the revolution torque of a manually driven shaft 6-a is not transmitted to the driving gear 5 but transmitted only to a driving ring 7 in the lower part to revolve a valve driving output shaft 6-b integrally formed with said driving ring 7, and thus a valve can be opend and closed.

Description

Detailed Description of the Invention The present invention relates to an electric rotating device that controls the opening and closing of a fluid flow path by rotating a movable body such as a butterfly valve or a three-way pole valve. It is characterized by making it possible.

Conventionally, in this type of rotating device, forward and reverse rotations are performed by rotation of an electric motor, but in the event of a power outage, the rotating device becomes inoperable and it becomes necessary to manually open and close the pulp.

In that case, the valve shaft, which is directly connected to the rotating device, must be manually rotated in some way, but since the output shaft of the rotating device and the valve shaft are directly connected to the electric motor,
Unless this direct connection is removed, large torque is required.
Moreover, it may put a strain on the reduction gear and damage the gear. Furthermore, if an electric motor with a brake is used, direct manual operation of the output shaft is practically impossible.

In view of these problems, there is a type of valve in which the direct connection between the electric rotating device and the valve shaft is removed, a manual shaft is taken out separately, and the valve shaft is manually operated.

In a device that rotates in one direction, a one-way clutch is used on the output shaft or the reduction gear shaft, and it is possible to operate manually only in the direction in which the pulp rotates by electric operation. Japanese Utility Model Publication No. 55-694 and Japanese Utility Application No. 1987 (1983) as a system in which a groove-shaped play is formed in the connection between the output shaft and the drive gear, and manual operation is possible within the rotation angle of the play. -062413
There is. However, manual operation is only possible in devices that rotate the pulp by step rotation in one direction, and in the opposite direction to the rotation direction of the output shaft, manual operation is possible from the point where the output shaft rotates. Can't rotate.

Therefore, these types cannot be used when a butterfly valve or the like is opened and closed in a reciprocating manner by forward and reverse rotation of an electric motor. The reason why this cannot be used is that the drive unit driven by the motor and the output shaft always have a certain amount of play, which means that manual operation is only possible in one direction, and manual operation in the opposite direction is not possible. It is from.

Therefore, the technical problem of the present invention is to eliminate play between the drive part and the output shaft when the drive part is driven by a motor, and to separate the two moving parts from the output shaft only when the drive part is operated manually. This enables rotation in two directions, forward and reverse, by manual operation. In order to solve the above technical problem, the following configuration is adopted.

That is, in a rotating device equipped with an electric motor and an electric control circuit for controlling the operation of the electric motor, a limit switch operating point is provided on the output shaft to perform switching by rotating the electric motor and the driving valve shaft of the electric motor. , an intermediate wheel fixed to the upper output shaft that can be rotated from the outside is interposed in the gap between the drive gear rotated by the output of the electric motor and the drive wheel fixed to the lower output shaft. It has an attachment/detachment mechanism that detaches the connecting member connecting the driving gear and the driving wheel by rotating and sliding the intermediate wheel in the gap between the driving gear and the driving wheel,
The output shaft can be rotated in two directions, normal and reverse, and the output shaft can be rotated in normal and reverse directions with one manual stroke.

(j　) Hereinafter, the present invention will be explained based on illustrated examples.

1 is a condenser type single-phase geared motor, 2 is a mounting base for this device, 3 is an upper plate that supports the motor and the condenser, etc., 4 is a column that supports the upper plate, and 5 is a motor that rotates according to the pinion gear of the motor. The drive gear 6, which has gears on its outer periphery so as to move, is an output shaft that is divided into an upper output shaft 6-a and a lower output shaft 6-b. Reference numeral 7 denotes a driving wheel fixed to the output shaft of 6-b, and connecting members 9 are fixedly installed at four locations spaced apart by 90' from each other at the central angle of the output shaft. 8 is an intermediate wheel sandwiched between the drive gear 5 and the drive wheel 7, and the central angle of the output shaft is 90 degrees.
'Individuals 12 are placed in four spaced locations facing the drive gear 5.
, and the upper output shaft 6-aK is fixed. Further, the intermediate ring 8 is provided with a pin through hole 10-b having a larger diameter than the connecting member 9, and the connecting member 9 passes through the pin through hole 10-b. 7? :10-a designates pin receiving holes formed at four locations on the side facing the intermediate wheel 8 of the drive gear 5''h at a distance of 900 mm from each other at the central angle of the output shaft in order to receive the connecting member 9. .11 is a sphere which is spaced apart from each other by 90 degrees at the center angle of the output shaft, and which is fixedly embedded in the drive gear 5 outside the circumference where the four pin receivers 1 are formed. 19 is a spring that acts to push down the drive gear 5. 13 is a limit switch actuation ring, and a pair of limit switch actuation rings 130 have a circumference. A pair of limit switches for controlling a motor are arranged adjacent to each other without being separated in the direction im OFF when
The same <15b turns OFF when it comes into contact with 14b. The switch is always on.

When the operation switch SW is turned to the contact a side, the motor rotates and rotates the drive gear 5 in one direction. Therefore, the pin receiving hole 10-a pushes the connecting member 9 to rotate the drive wheel 7, and the sphere 11 matches the seed hole 12 of the intermediate wheel 8, rotating the output shaft 6 while causing the intermediate wheel 8 to rotate together. and rotate the pulp shaft that is directly connected to this. At this time, the output shaft rotates 90 degrees at the center angle of the output shaft, and the limit switch operating ring fixed to the output shaft also rotates 90 degrees, and the limit switch operating point 14a disposed on it also rotates 90 degrees. 1st
When it comes into contact with the limit switch 15a, it is turned off and the electric motor 1 stops. The pulp becomes open. Next, when the operation switch SW is turned to the contact side, the electric motor 1 rotates in the opposite direction to the above case, rotating the drive gear 5 in the opposite direction and rotating the output shaft 6 by the operation described in detail above. let When the output shaft moves 90° at the center angle of the output shaft,
This time, the limit switch actuation point 14 arranged on the limit switch actuation ring fixed to the output shaft
b comes into contact with the second limit switch 15b and turns off, and the electric motor 1 stops. The pulp becomes closed.

Thereafter, by switching the SW in this way, the output shaft 6 is rotated in one direction and the other direction at 90° position intervals to drive the pulp to open and close.

As described above, the rotating device of the present invention is automatically operated by the operation switch SW during normal operation, but in particular, when an accident such as a power outage occurs and it becomes necessary to manually open and close the pulp, manual operation from the outside is required. The output shaft 6 and the drive wheels fixed thereto can be freely rotated in one direction and the other direction independently of the electric motor and the gears driven by it. The principle of this mechanism will be explained below.

When the output shaft 6-a is rotated, the intermediate wheel 8, which is integrated with the output shaft 6-a, tends to rotate. In this case, the diameter of the pin receiving hole 1o-b through which the connecting member 9 formed in the intermediate wheel passes is larger than the diameter of the connecting member 9, and the pin receiving hole 10-b formed in the drive gear 5. a is approximately the same size as the diameter of the connecting member 9. Therefore, the output shaft 6-a
When the intermediate ring 8 is manually rotated, the intermediate ring 8 is rotated by the amount of play caused by the difference in diameter between the bottle through hole 10-b formed therein and the connecting member 9. At this time, drive gear 5
is in a state where it cannot rotate because it is meshed with the pinion gear of the motor, and the seed hole 12 formed in the intermediate wheel 8 rotates the sphere 11, which is fixedly attached to the drive gear 5, by the inclination of the seed hole 12 and the rotational torque. The drive gear 5 is pushed up in the vertical direction of the output shaft 6. By this operation, the connecting member 9, which had been inserted into the blind hole 10-a formed in the drive gear 5, is released. The connecting member 9 has a pin receiving hole 1 formed in the intermediate ring 8.
It will be connected only to 0-b. Therefore, manual shaft 6-
The rotational torque a is not transmitted to the drive gear 5, but is transmitted only to the lower drive wheel 7, which rotates the pulp drive output shaft 6-b, which is integral with this, to open and close the pulp. I can do it.

As described above, the pulp can be opened and closed manually by rotating the manual shaft 6-a, but when the manual shaft 6-a is rotated by 90 degrees, the intermediate wheel 8 integrated with this manual shaft 6-a also opens and closes at 90c.
'Rotate. At that time, the blind hole 1 formed in the drive gear 5
The sphere 11 fixed to 0-a and the drive gear 5 is
The positional relationship is such that it can be fitted into the seed hole 12 formed in the intermediate wheel 8 and the connecting member 9 which is fixed to the drive wheel 7 passing through the intermediate wheel 8. In this case, due to the action of the spring 190 pushing the drive gear 5, the ball 12 of the drive gear 5 fits into the seed hole 12 of the intermediate wheel 8, and the connecting member 9 fixed to the drive wheel 7 fits into the blind hole 10-a. are connected.

When the motor 1 rotates and the driving gear 5 rotates, the blind hole 10-a of the driving gear 5 rotates the intermediate wheel 8 and the driving wheel 7 by means of the connecting member 9. In this case, since the manual shaft 6-a, which is integrated with the intermediate wheel 8, rotates together with the driving gear 5, it is possible to push out the sphere 11 fixed to the driving gear 5, which is in the seed hole of the intermediate wheel 8. The rotational torque of the motor 1 is transmitted to the intermediate wheel 8 and the driving wheel 7 without the need for any movement, and the pulp can be opened and closed electrically. The rotation of the motor is started and stopped by limit switches 15a, b and limit switch operating points 14-a, b.

It is also possible to revise the mechanism of the present device, as shown in the embodiment shown in FIG. 1 and the variation shown in FIG. 2.

That is, a connecting member 9-a is fixed to the driving gear 5, a pin receiving hole 10-a is provided to the intermediate wheel 8, a connecting member 9-b is fixed to the driving wheel 7, and the connecting member 9-b is fixed to the driving gear 5. KL so that a pin through hole 10-b with a large diameter is provided in the intermediate ring 8;
The connecting structure is divided into upper and lower parts.

The operation is similar to that of the embodiment shown in FIG.

Next, a modification of the manual operation section of the embodiment shown in FIGS. 1 and 2 will be described with reference to FIG. 3.

That is, in the embodiment of FIGS. 1 and 2, the manual shaft 6
-a is taken out and rotated manually, but in this case, the manual shaft 6-a must be rotated with the same torque as the torque that turns the pulp. Therefore, in the one shown in FIG. 3, gears are cut on the outer periphery of the intermediate ring 8, and the pulp operating gear 16 fixed to the manual rotating shaft 17 is meshed with the gear. , the intermediate wheel 8 is rotated, and the driving gear 5 is removed from the connecting member 9 fixed to the driving wheel 7, and the driving wheel 7 is rotated while holding the connecting member 9 of the intermediate wheel 8. , the pulp drive shaft 6-b is turned to open and close the pulp.

As an advantage of this embodiment, compared to the embodiments shown in FIGS. 1 and 2, the rotational torque of the manual rotation shaft 17 can be reduced to
The pulp rotating shaft 6-b can be rotated by transmitting a large torque to the driving wheels 7 in proportion to the reduction ratio between the gears 6 and the number of teeth of the intermediate wheel 8.

The other operations are the same as those of the embodiment shown in FIGS. 1 and 2.

In the case of the embodiment shown in FIG. 3, the output shaft 6 is connected to the upper part 6-
By inserting the intermediate wheel 8 between the drive gear 5 and the drive wheel 7 so as to insert it freely into the output shaft 6 without dividing it into the lower part 6-a and the lower part 6-b, the structure shown in FIG. The same operation as in the embodiment is possible. A sectional view of this embodiment is shown in FIG.

The present invention is not limited to the above-mentioned embodiments, and various modifications may be made to the connecting portions of the three members, the drive gear 5, the intermediate wheel 8, and the drive wheel 7.

In the description of the embodiment, the rotation angle of the output shaft 6 is set to 90 degrees, but the rotation angle can be freely set within the range of 360 degrees. Further, the method of connecting the three members may be a method of connecting the drive gear 5 and the intermediate wheel 8, or a method of connecting the intermediate wheel 8 and the drive wheel 7. The point is that the intermediate wheel 7 can be manually rotated to uncouple the intermediate wheel 7 and the driving gear 5, and the driving wheel 7 can be manually operated in a state free from the motor.

As described above, various modifications can be made without departing from the technical idea of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the invention, FIG. 2 is a sectional view of another embodiment of the invention, and FIGS. 3 and 4 are sectional views of still other embodiments of the invention. In the figure, 1... Electric motor 5... Drive gear 6... Output shaft 6a+6b... Output shaft 8... Intermediate wheel 9... Connecting member 11... Spheres 14a, 14b... Limit Switch actuation point patent applicant Toda Kiko Co., Ltd.

Claims (1)

[Claims] In a rotating device equipped with an electric motor and an electric control circuit for controlling the operation of the electric motor, a limit switch actuation point is provided on the output shaft to perform switching by rotating the valve stem by the drive of the electric motor. An intermediate wheel fixed to the upper output shaft, which can be rotated from the outside, is interposed in the gap between the drive gear that rotates during output and the drive wheel fixed to the lower output shaft. It has an attachment/detachment mechanism that detaches the connecting member that connects the drive gear and drive wheel by rotating and sliding the intermediate wheel in the gap between the wheels, and the output shaft can be rotated in two directions: forward rotation and reverse rotation. This is a manually operable electric rotating device that allows the output shaft to rotate in the forward and reverse directions by manually rotating the intermediate wheel.