JPS5943608B2 - Water gate opening/closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water gate opening/closing device for raising and lowering a water gate door.

Conventionally, a commonly used electric water gate opening/closing device connects the output shaft of an electric motor to a screw that engages with a spindle rod via a worm wheel, and uses the rotational output of the motor to raise and lower the water gate.

This conventional device also uses a manual operation mechanism in case of a power outage, which has the advantage that the structure is relatively simple.

However, while having these advantages, conventional devices have extremely complicated on/off operations of the manual operation mechanism.
This has the drawback that it is time consuming and cannot be used in emergencies.

In order to eliminate the drawbacks of the conventional devices mentioned above, a water gate opening/closing device that allows the gate to fall under its own weight has been developed. , a mechanism to prevent rotation of the manual bundle, such as by removing the manual bundle, is essential.

For this reason, there is no difference in terms of the complexity of operation, and accidents such as damage to the device due to incorrect operation procedures are likely to occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water gate opening/closing device that eliminates the various drawbacks of the conventional devices described above, has extremely high operability, is compact, and has a simple configuration.

The configuration of the present invention is such that gears are fixed to two side gears of a differential gear mechanism, and one of the gears is connected to the output shaft of a rotary drive device via a gear mechanism having a self-locking function. The other of the clutch shafts is engaged with a gear fixed to the clutch shaft, and the shafts that rotatably support the side gears of the differential gear mechanism are connected to the water gate lifting rack via a reduction mechanism, and the clutch shaft A brake device is connected to one end, and a manual bundle is connected to the clutch shaft via a clutch device and a gear mechanism having a self-locking function, and a gear mechanism having a self-locking function with the clutch shaft by operation of the clutch device. With this structure, the water gate can be raised and lowered by power or manually, and the water gate can be lowered by its own weight only by operating the clutch device.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

A differential gear mechanism 2 is disposed inside a casing 1a of the water gate opening/closing device 1.

The differential gear mechanism 2 has a shaft 5 that rotatably supports the side gears 3 and 4, and a shaft 5 that is integrally formed with the shaft 5 and rotatably supports a pinion 6. Pinions 6.7 mesh with side gears 3 and 4, respectively.

The shaft 5 is rotatably supported by the casing 1a, and a spur gear 8 is fixed to one end of the shaft 5.

A worm gear 9 is integrally fixed to the side gear 3 by a bolt 10, and a worm gear 9 is integrally fixed to the side gear 4.
are integrally fixed by bolts 12.

A rotation drive device 13 such as an electric motor is fixed to the casing 1a, and a gear 14 is fixed to its output shaft 13a.

The gear 14 is always meshed with the gear 15, and the gear 15 is fixed to a shaft 16 rotatably supported by the casing 1a.

And axis 16? There is a worm at the tip (not shown).

) is attached, and this worm meshes with the worm gear 9.

On the other hand, a counter shaft 17 is rotatably supported in the casing 1a, and this counter shaft 17 has two
Two spur gears 18, 19 are fixed.

Then, the spur gear 1B meshes with the spur gear 8. Yes, spur gear 1
9 meshes with spur gear 20.

The spur gear 20 is fixed to a shaft 21, and the shaft 21 is connected to the casing 1.
It is rotatably supported by a.

A pin gear 22 is fixed to the shaft 21, and the pin gear 22 is engaged with a rack 23 for raising and lowering the water gate.

La for raising and lowering the water gate. It goes without saying that the lower end of the hook 23 is fixed to a water gate (not shown).

Reference numeral 24 indicates a guide roller for guiding the water gate lifting rack 23, and the guide roller 24 is rotatably supported by the casing 1a.

Further, a clutch shaft 25 is rotatably supported by the casing 1a, and the clutch shaft 25 is arranged parallel to the shaft 5.

A spur gear 26 is fixed to the clutch shaft 25.
meshes with the spur gear 11.

A bevel gear 27 is fixed to one end of the clutch shaft 25,
Bevel gear 27 meshes with bevel gear 30.

This bevel gear 30 is fixed to a rotating shaft 29 of a centrifugal brake device 28 housed in the casing 1a.

A clutch device 31 is not attached to the clutch shaft 25,
The clutch device 31 is illustrated as a so-called friction type clutch device.

That is, the configuration includes a stop member 32 rotatably attached to the clutch shaft 25, and a stop member 32 rotatably attached to the clutch shaft 25.
5, a worm gear 33 that is rotatably attached to the worm gear 33 and slidable in the left-right direction, a friction plate 34 disposed between the stopper member 32 and the worm gear 33, and a clutch actuating shaft 3.
It consists of a suppressing member 36 which is slidable in the left and right direction in conjunction with the rotational movement 5 and is rotatably supported by itself, and a friction member 37 fixed to the suppressing member 36.

The clutch operating shaft 35 is rotated between forward and reverse directions by a detachable clutch bundle (not shown).

38 indicates a manual bundle, which is rotatably attached to the casing 1aK.

A worm (not shown) is fixed to the tip of the shaft 38a of the manual bundle 38, and the worm (-) meshes with the worm gear 33.

The action will be explained below.

(+) When the water gate door is raised and lowered by the output of the rotary drive device 13.

When the output shaft '13a of the rotary drive device 13 rotates, its rotational force is transmitted to the gears 14, 15, the shaft 16, and the worm (not shown).

) is transmitted to the worm gear 9.

When the worm gear 9 rotates, the side gear 3 also rotates, and its rotational force is transmitted to the shaft 5' via the pinion 6.7, so that the shaft 5 rotates as the shaft 5' rotates.

The reason for this is that at this time, the worm gear 33 is fixed to the clutch shaft 25 by the clutch device 31, and the worm gear 33 is engaged with a worm (not shown) attached to the shaft 38a of the manual bundle 38. This is because the shaft 25 is in a so-called self-locking state, and the side gear 4 connected to the clutch shaft 25 via the spur gear 26.11 cannot rotate.

In this way, when the shaft 5 rotates, its rotational force is transferred to the spur gear 8,
18, countershaft 17, spur gears 19, 20, shaft 21 to pin gear 22, pin gear 220
Rotation (forward/reverse) causes the water gate lifting rack 23 to move up and down.

As a result, the water gate door (not shown) is moved up and down.

In other words, when the rotary drive device 13 is driven, the manual bundle 38 does not rotate.

Additionally, when the rotary drive device 13 is driven, the centrifugal brake device 28 also does not operate.

(11) By manual operation of the manual bundle 38,
When raising and lowering the water gate door.

At this time, the clutch device 31 is tightened to fix the worm gear 33 to the clutch shaft 25.

That is, the manual bundle 13 is operated in the state in which the rotation drive device 13 described above is in operation.

When the manual bundle 13 is rotated, the rotational force is transferred to the shaft 38
a1 The rotational force is transmitted to the clutch shaft 25 via a worm (not shown) and the worm gear 33, and furthermore, this rotational force is transmitted to the spur gear 2.
6.11 to the side gear 4.

At this time, a worm (not shown) is attached to the tip of the worm gear 9 and the shaft 16.

) are in mesh with each other, so the side gear 3 is in a so-called self-locked state and cannot rotate.

Therefore, when the side gear 4 rotates with the rotation of the manual bundle 38, the rotational force is transmitted to the shaft 5' through the pinion 6.7, and the rotation of the shaft 5' - that is, the rotation of the shaft 5 causes the spur gear 8 to rotate. rotates.

The rotational force of the spur teeth 8 is transmitted to the pin gear 22 along the same path as previously mentioned α:), thereby causing the water gate lifting rack 23 to move up and down.

(in When lowering the water gate by its own weight.

When the water gate door is lowered by its own weight from its rolled up state, the clutch actuating shaft 35 is rotated in the loosening direction by a clutch bundle (not shown), thereby causing the pressing member 36 to move as shown in the figure.
The engagement between the worm gear 33 and the clutch shaft 25 is released by displacing it to the left.

Then, the clutch shaft 25 becomes able to rotate freely, and the dead weight of the water gate door can be lowered.

That is, when the water gate lowers due to its own weight, the water gate lifting rack 23 also lowers, and the pin gear 22 rotates.

The rotational force of the pin gear 220 is transmitted to the shaft 5 via the shaft 21, the spur gears 20 and 19, the countershaft 1γ, and the spur gears 18 and 8.

At this time, since the side gear 3 is self-locked by meshing with the worm gear 9 and a worm (not shown), the rotational force of the shaft 5 is transmitted to the clutch shaft via the shaft 5, pinion 6.7, side gear 4, and spur gear 11.26. 25, and the clutch shaft 25 rotates while operating the centrifugal brake device 28.

In other words, the water gate safely descends at a predetermined speed while being applied with a braking force.

As is clear from the above explanation, the centrifugal brake device 28
It operates only when the water gate falls under its own weight.

As explained above, according to the present invention, there is no need to release the engaged state of the clutch device except when the water gate door is lowered by its own weight, resulting in extremely high operability and high safety. .

Furthermore, since the structure is simple, it is easy to downsize.

[Brief explanation of drawings]

The figure is a partial sectional view showing the configuration of the water gate opening/closing device of the present invention. 1... Water gate opening/closing device, 2... Differential gear mechanism, 3, 4
...Side gear, 5...shaft, 9, 11...gear,
13... Rotation drive device, 22... Pin gear, 23.
・・Ratsuku for raising and lowering the water gate 25・・Clutch fitting 28・
・Centrifugal brake device, 31...Clutch device, 38・
...Manual band A also

Claims (1)

[Claims] 1 A gear is fixed to each of the two side gears of the differential gear mechanism, one of the gears is connected to the output shaft of the rotary drive device via a gear mechanism having a self-locking function, and the other of the gears is is engaged with a gear fixed to a clutch shaft, and a shaft rotatably supporting each of the side gears of the differential gear mechanism is connected to a water gate lifting rack via a shaft mechanism, and a brake is attached to one end of the clutch shaft. A manual bundle is connected to the clutch shaft via a clutch device and a gear mechanism having a self-locking function, and the clutch shaft and the gear mechanism having a self-locking function are connected by operation of the clutch device. A removable water gate opening/closing device.