JPH0513775Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This proposal concerns a water gate opening/closing device.

``Prior art'' Conventional door opening/closing devices are equipped with both power and manual drive devices, and the input side of both drive devices is inputted to a differential gear mechanism via a self-locking mechanism using a worm and a worm gear. In the self-locked state, the other drive device was outputted from the differential gear mechanism, and the water gate lifting rack was raised and lowered by either of the drive devices (Japanese Patent Publication No. 59-43608). In such a conventional opening/closing device, a self-locking mechanism using a worm gear and a worm is interposed in the power transmission line, so that the power transmission efficiency is low. Therefore, there was a problem in that a relatively large capacity prime mover had to be used.

``Problems to be solved by the invention'' This invention allows the door to be easily opened and closed by power or manual operation, efficiently opens and closes the door using a relatively small-capacity prime mover, and allows for the lifting and lowering of the door. The object of the present invention is to obtain a door opening/closing device that can easily detect overload during abnormal operation.

``Means for Solving the Problems'' In order to achieve the above objectives, this proposal provides a planetary gear reducer in the gear box, and a self-locking device with an electromagnetic clutch and a negative electromagnetic brake on the sun gear drive shaft of the reducer. A drive motor is connected through the planetary gear shaft, and a reduction gear fixed in the revolution direction is provided on the planetary gear shaft. What is a gate opening/closing device for a water gate, which is equipped with a worm gear fixed in the direction of rotation, a worm meshed with the worm gear, and a manual handle provided on the rotation axis of the worm?A negative actuation electromagnetic brake is equipped with a manual lever for brake release. A gate opening/closing device for a water gate according to the above-mentioned invention, in which a planetary gear reducer is interposed on the input side of a self-locking device, an internal gear of the reducer is supported so as to be rotatable in the reaction direction, and a braking trigger for the rotation is provided. and a gate opening/closing device for a water gate according to the first or second invention described above, which is provided with a rotation sensing switch.

"Operation" Therefore, by energizing the electromagnetic clutch 5 and the negative operating electromagnetic brake 6, the clutch 5 is engaged and the brake 6 is opened. The sun gear 3 of the gear reducer 2 is rotated to cause the planetary gears 9, 9, 9 to revolve, but the internal gear 14 is self-locked by the meshing of the worm gear 16 and the worm 17 and does not move. The reduction gear 11 is rotated by the revolution of the planetary gears 9, 9, 9, and the pinion 12 connected thereto is rotated to lower or raise the door lifting rack 13 (not shown). (not shown) can be lowered or raised, and the water gate can be opened and closed by the electric motor 8. When manually opening and closing the door using the manual handle 19, the electromagnetic clutch 5 and the negative electromagnetic brake 6 are demagnetized. When demagnetized, the clutch 5 opens and the brake 6 closes, so that the brake 6 holds the sun gear 3 in a stopped state. When the manual handle 19 is rotated in this state, the internal gear 14 is decelerated and rotated via the worm 17 and the worm gear 16, and the planetary gears 9, 9, 9 are revolved to rotate the deceleration gear 11.
The rack 13 is rotated, and the pinion 12 connected thereto is rotated to raise or lower the rack 13, so that the door body can be manually raised or lowered.

Further, when the door body is stopped rising, when the brake release manual lever 20 is operated to release the demagnetized negative action electromagnetic brake 6, the sun gear 3 is unlocked and becomes free, so that the door body descends by its own weight.

When the drive motor 8 is operating abnormally due to foreign matter getting caught in the movement of raising and lowering the door body, the motor 8 is overloaded, and the internal gear 15 of the planetary gear reducer 21 generates a reaction force against the brake spring 22. direction, the rotation detection switch 23 is closed and a sensing signal is generated, and this signal opens the circuit of the electric motor 8 and stops it. At the same time, the electromagnetic clutch 5 and the negative actuating electromagnetic brake 6 are demagnetized and the clutch 5 is rotated. The sun gear 3 is locked by opening the brake 6 and closing the brake 6.

“Embodiment” A planetary gear reducer 2 is built into a machine box 1. The rotation shaft 24 of the internal gear 14 of this reducer 2 has the internal gear 1
4 is a rotation shaft 18 of a worm 17 that is provided with a worm gear 16 that is fixed in the rotational direction, and that meshes with the worm gear 16.
A manual handle 19 is provided. A forward/reverse drive motor 8 is connected to the drive shaft 4 of the sun gear 3 of the reduction gear 2 through a self-locking device 7 consisting of an electromagnetic clutch 5 and a negative actuating electromagnetic brake 6. Planetary gear reducer 2 on the side
Interpose 1. The rotating shaft 26 of the sun gear 25 of this reducer 21 is connected to the output shaft of the electric motor 8, and the shaft 28 of the planetary gear 27 is connected to the rotating gear 29 which decelerates in the revolution direction.
The gear 29 is meshed with the input gear 30 of the electromagnetic clutch 5. The internal gear 15 meshing with the planetary gear 27 moves in the reaction direction (arrow a,
b) is rotatably supported in
2 and 22 are pressed against both sides of a striker 31 protruding from the internal gear 15, and rotation sensing switches 23 and 23 are provided on both sides of the upper end of the striker 31 to form an overload detection device 32 ( Second
figure). In the planetary gear reducer 2, a reduction gear 11 fixed to the shaft 10 of the planetary gear 9 in the direction of revolution with the planetary gear 9 is provided, and a pinion 12 is connected to the reduction gear 11 via a reduction gear group 33. A pinion 12 is engaged with a rack 13 for raising and lowering the door body. The negative actuation electromagnetic brake 6 is closed in the demagnetized state, and a manual lever 20 is provided to release (open) the brake 6 in that state. This negative actuation electromagnetic brake 6 is provided on the output shaft 34 of the electromagnetic clutch 5, and the output shaft 34 and the drive shaft 14 of the sun gear 3 are connected to the bevel gears 35, 35.
connected via. In addition, 36 in the figure is a governor provided on the drive shaft 4 of the sun gear 3, 37 in FIG. 2 is a pusher interposed between the brake spring 22 and the striker 31, and 38 is an adjustment screw for the spring 22. .

``Effects'' Since the present invention is configured as described above, not only can the door body be opened and closed by power and manually using a simple device in one box 1, but it can also be done efficiently by the electric motor 8, which has a relatively small capacity. This has the effect of allowing the door body to be moved up and down easily.

In addition, the present invention allows electrical self-weight lowering operation and is compatible with remote control, and allows the door body to be easily lowered under its own weight by manually operating a lever.

Furthermore, when an overload occurs due to a stoppage of the door or other accident, this can be quickly detected and the electric motor 8 can be automatically stopped.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a gate opening/closing device for a water gate according to the present invention, and FIG. 2 is a front view taken along line A-A in FIG. 1. 1... Mechanical box, 2... Planetary gear reducer, 3... Sun gear, 4... Drive shaft, 5... Electromagnetic clutch, 6
... Negative action electromagnetic brake, 7 ... Self-lock device, 8 ... Drive motor, 9 ... Planetary gear, 10 ...
...shaft, 11 ... reduction gear, 12 ... pinion, 1
3... Rack for raising and lowering the door body, 14, 15... Internal gear, 16... Worm gear, 17... Worm,
18...Rotation axis, 19...Manual handle, 20...
...Manual lever for brake release, 21...Planetary gear reducer, 22...Brake activation, 23...Rotation sensing switch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A planetary gear reducer is provided in the gearbox, and a drive motor is connected to the sun gear drive shaft of the reducer via a self-locking device consisting of an electromagnetic clutch and a negative action electromagnetic brake, A reduction gear fixed in the revolution direction is provided on the planetary gear shaft, a pinion connected to the reduction gear is meshed with a rack for raising and lowering the door body, and an internal gear meshed with the planet gear is fixed in the rotation direction. A door opening/closing device for a water gate, which is provided with a worm gear, a worm is meshed with the worm gear, and a manual handle is provided on the rotating shaft of the worm. (2) The gate opening/closing device for a water gate according to claim (1), wherein the negative action electromagnetic brake is provided with a manual lever for releasing the brake. (3) A planetary gear reducer is interposed on the input side of the self-locking device, the internal gear of the reducer is supported so as to be rotatable in the reaction direction, and a brake activation and rotation detection switch is provided for the rotation. A gate opening/closing device for a water gate according to claim (1) or (2).