JPH03235808A - Floodgate opening/closing device - Google Patents

Abstract

PURPOSE:To improve the safety and operatability of the opening/closing of a floodgate, by connecting a screw brake and a centrifugal brake device that provide a rotary drive device output shaft at one of the two side gears of a differential gear mechanism and also a clutch mechanism at the other side gear. CONSTITUTION:When a rotary drive device 43 is rotated, a gear 33 is rotated through gears 44-46, and a shaft 39 is turned around an output shaft 36 by means of the rotation of a side gear 32, and rotation is transmitted to a pin gear 74 through gears 68-73. And a floodgate is opened/closed by moving a pin 67 up and down. In addition, when a handle 60 is turned manually, a gear 41 is rotated through gears 64, 60, bevel gears 57, 50, and transmission is made to a gear 35, and a side gear 34 is rotated and the shaft 39 is turned around the output shaft 36, and the floodgate is opened/closed. Also, the pin 74 is rotated by means of the self weight of the floodgate suspended down at the pin 67, and the output shaft 36 is made to rotate through gears 73-68, and the floodgate is closed at a predetermined descending speed by driving a centrifugal brake 51 through gears 35, 4a, and bevel gears 50, 57 by means of the turning of the shaft 39.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a water gate opening/closing device for discharging water from a reservoir to a downstream river for flood control and water utilization.

(Prior Art) Generally, water gates are installed outdoors and are opened and closed infrequently.

If the water gate is installed outdoors and is opened and closed infrequently, the mechanical device that opens and closes the water gate will rust, or if a multi-disc clutch is used, the multiple discs may become stuck together, causing the so-called idle state. Deterioration occurs.

In this way, if a flood gate opening/closing device suffers from idle deterioration, it becomes impossible to open or close the flood gate, which not only causes problems in flood control and water utilization, but also if the flood gate does not close,
This will lead to flooding downstream of the river.

For these reasons, it is desirable that the water gate opening/closing device not suffer from idle deterioration.

Next, the technical considerations required for water gate opening/closing devices are as follows:
Water gates can be opened and closed safely depending on river conditions;
Human error, for example, human failure to control the operation center, deterioration of the wiring or electrical parts in the case of electrical operation, or wear of the multiple plates in the case of using a multi-disc clutch, etc. Its durability is required.

As shown in FIG. 3, the conventional water gate opening/closing device has a ohm gear 2 fixed to one of two side gears of a differential gear mechanism 1, and a ohm 3 that meshes with the worm gear 2 and the gear mechanism. A rotational drive device 4 is connected to the ohm gear 2, and a gear 5 is fixed to the other side gear.
, Kura Fuchi 9. A screw brake 8 is attached, and a centrifugal brake 11 is removed via a bevel gear IO. Further, a handle wheel 13 is attached via a worm 12 that meshes with the ohm gear 7. The rotation of the gear 14 fixed to the output shaft of the differential gear 1 is transmitted to the bin gear 18 via gears 15, 16, 17, and rotates the bin 19 of the bin rack, which is fitted into the teeth of the bin gear 18. It moves up and down to open and close a water gate (not shown).

In this conventional example, when opening and closing the water gate using the rotary drive device 4, the gear 6 is self-locked by the worm gear 7 by manually operating the clutch 9 and fixing the worm gear 7 to the shaft 20. As a result, the gear 5 does not rotate, and the rotation of the rotary drive device 4 is outputted to the gear 14 via the ohm 3, the ohm gear 2, and the differential gear mechanism 1, and moves the bin 19 up and down to pass through a water gate (not shown). Open and close.

Next, when operating the manual handle 131 to open or close the water gate, manually operate the clutch 9 to shift the worm gear 7 to the shaft 2.
Fix it to D. At this time, since the rotary drive device 4 is stopped, the worm 3 and the worm gear 2 engage with each other, so that the differential gear mechanism 1 to which the worm gear 2 is fixed.
The side gear is self-locking. In this state, when the handle wheel 13 is rotated by operating the handle 131, this rotation rotates the gear 6 via the worm 12 and the worm gear 7. The rotation of the gear 6 is output to the gear 14 via the gear 5 and the differential gear mechanism l, and
The water gate (not shown) is opened and closed manually by raising and lowering the water gate.

Next, when opening and closing the water gate using its own weight, manually operate the clutch 9 to release the connection between the ohm gear 7 and the shaft 20 (self-lock release), and free the shaft 20. Make it rotatable. Further, since the water gate is opened and closed by its own weight in an emergency such as a power outage, the rotary drive device 4 is stopped and self-locked by the worm gear 2. Under these conditions, when the water gate suspended from the bin 19 descends due to its own weight, the bin gear 1
8 rotates due to its descent, and the rotation is caused by the gear 17.16
．． Rotate the shaft 20 via 15.14.5.6. As the shaft 20 rotates, the centrifugal brake 11 also rotates, and the water gate descends at a predetermined descending speed while being braked by the centrifugal brake 11, and the water gate is closed in an emergency.

In this way, the clutch 9 is operated manually for all of the opening/closing operations of the water gate by the rotary drive device 4, the manual opening/closing operations of the water gate, and the opening/closing operations of the water gate due to its own weight.

Further, as another conventional example, the one shown in FIG. 4 uses an excitation operated electromagnetic clutch 21 and a non-excitation operated electromagnetic clutch 22, so that when either one clutch is engaged, the other clutch is disengaged. It has become.

The motor 23 connects to the excitation operated electromagnetic clutch 2 via a gear mechanism.
The rotation of the motor 23 is transmitted to the drive gear 25 via the excitation-operated electromagnetic clutch 2N and the intermediate gear 24, and opens and closes the water gate 26. On the other hand, the rotation of the handle 27 is transmitted to the intermediate gear 24 via the screw brake 28 and the non-excited electromagnetic clutch 22, and the intermediate gear 24 rotates the drive gear 25 to open and close the water gate 26. A centrifugal brake 29 is always activated by an intermediate gear 24 rotated by a motor 23 or a handle 27.

In this conventional example, when the water gate 26 is opened or closed by the motor 23, the excitation-operated electromagnetic clutch 21 is energized and connected, and the non-excitation-operated electromagnetic clutch 22 is in a disengaged state, so the screw brake 28 is The state is substantially released, and the intermediate gear 24 is allowed to rotate, and the intermediate gear 24 is rotated by the motor 23 and the drive gear 2
5 rotates and the water gate 26 is opened and closed.

Next, when rotating the handle 27 to manually open and close the water gate 26, the excitation-operated electromagnetic clutch 21 is de-energized and disconnected, while the non-excitation-operated electromagnetic clutch 22 is connected. The rotation of 27 is transmitted to the drive gear 25 via the intermediate gear 24, and the water gate 26 is opened and closed.

Next, when the water gate 26 is opened or closed by its own weight, the non-excitation electromagnetic clutch 22 is energized, the non-excitation electromagnetic clutch 22 is disengaged, and the screw brake 28 is unlocked. As a result, the drive gear 25 is rotated by the weight of the water gate 26 falling, and the water gate 26 is closed at a predetermined descending speed while the centrifugal brake 29 applies the brake.

In addition, in an emergency situation such as a power outage, the excitation-operated electromagnetic clutch 21 is in a disengaged state, and the non-excitation-operated electromagnetic clutch 22 is in a disengaged state.
is in a connected state, so the non-excited electromagnetic clutch 22 is manually disconnected using the handle 30, the screw brake 28 is unlocked, the water gate 26 is lowered under its own weight, and the water gate is closed.

In this conventional example, the centrifugal brake 29 operates via the intermediate gear 24, so that it always operates when the water gate 26 is opened or closed by the motor 23 or the handle 27.

(Problem to be Solved by the Invention) In the conventional example shown in FIG. 3 above, when the clutch 9 is operated and the ohm gear 7 is not connected to the shaft 20, the water gate is manually opened and closed by operating the handle 131. Furthermore, a situation arises in which the rotary drive device 4 is unable to open and close the water gate.

That is, the structure and function of the differential gear mechanism are such that unless one of the side gears of the differential gear mechanism is locked, the rotation of the other side gear will not be output.

The above situation occurs when, for example, the water gate is closed due to the drop of its own weight, the clutch 9 is operated to release the connection between the worm gear 7 and the shaft 20. This happens when you forget to make the connection to the shaft 20. Since the sluice gates are opened and closed infrequently, if this operation is left unattended, the next time the sluice gates are opened by operating the rotary drive device 4 or the handle 131, the sluice gates cannot be opened, resulting in flood control and water utilization. The problem is that it cannot be done. In addition, if for some reason the flood gate cannot be opened or closed by manual operation using the rotary drive device 4 and handle 131 due to an error in the operation of the clutch 9, operability and safety will be affected, as not only will the flood control and water utilization be adversely affected, but there will also be a risk of flooding. There is a problem with sexuality.

Also, as a locking means for the side gear of a differential gear mechanism,
Since a ohm and a ohm gear with a large reduction ratio are used, the opening/closing speed for manually opening and closing the water gate is slow and there is a problem in terms of operability.

Next, since the conventional example shown in FIG. 4 uses an energized and non-energized working electromagnetic clutch, it has the following problems. That is, the structure of these differential electromagnetic clutches requires a highly accurate gap between the excitation plate and the magnet of 0.9 to 1.1 mm. When the clutch plates of these differential electromagnetic clutches wear out, this gap cannot be maintained.
The functions of these operating electromagnetic clutches are impaired, and the water gate opening/closing device becomes inoperable, making it impossible to open and close the water gate, which poses problems in terms of safety and durability.

In addition, since the water gates are opened and closed less frequently, the clutch plates of the non-excitation operated electromagnetic clutch remain in close contact for a long period of time, so when closing the flood gate due to the fall of its own weight, the non-excitation operated electromagnetic clutch must be operated by energizing or manual operation. However, due to idle deterioration, the clutch plate cannot be released and the water gate cannot be closed due to its own weight falling. In particular, closing the flood gates due to their own weight falling is a safety issue since it is an emergency.

In addition, as a characteristic of energized and non-excited operating electromagnetic clutches, even when the electromagnetic force is turned off, magnetic force remains in these operating electromagnetic clutches (hereinafter this phenomenon is referred to as idling torque), and this idling torque acts on these operating electromagnetic clutches. This causes a kind of braking effect, and even if there is no idle deterioration, the rate of descent of the water gate due to its own weight slows down, causing problems in operability and safety in emergencies.

Also, when opening and closing the water gate with a motor, the non-excited differential electromagnetic clutch becomes a load due to idling torque, and
Since the centrifugal brake is also constantly operated by the intermediate gear, there is a problem in that both of these act as a constant load on the motor, increasing running costs.

(Means for Solving the Problems) The present invention improves safety, operability, and durability by eliminating the use of ohm gears and energized and non-energized differential electromagnetic clutches, and the means thereof. In this method, a gear is fixed to each of two side gears of a differential gear mechanism, an output shaft of a rotary drive device is connected to one of the gears via the gear mechanism, and a clutch mechanism is connected to the other gear via the gear mechanism. The present invention is characterized in that a screw brake and a centrifugal brake device provided together are connected, the clutch mechanism is provided with an automatic return type self-weight lowering lever, and a manual handle is connected to the screw brake via a gear mechanism.

(Function) With this configuration, when opening and closing the water gate using the rotary drive device, a screw brake is connected to one of the two side gears of the differential gear mechanism via a clutch mechanism, and a centrifugal brake is also connected to one of the two side gears of the differential gear mechanism. Since the devices are connected through a gear mechanism, the side gear is self-locked, and the output shaft of the rotary drive device is connected to the other side gear through the gear mechanism, so the rotation of the rotary drive device is controlled. It is output to the output shaft of the differential gear mechanism, and the water gate is opened and closed.

When the rotary drive device opens and closes the water gate, the centrifugal brake and screw brake are on the side that self-locks the side gears of the differential gear mechanism, so these centrifugal brakes and screw brakes do not act as a load on the rotary drive device. .

Next, when opening and closing the water gate by manual operation, by stopping the rotary drive device, the side gear to which the rotary drive device is connected is self-locked. By turning the handle, the rotation is output to the output shaft of the differential gear mechanism, and the water gate is opened and closed. Since this handle is connected to the screw brake via a spur gear mechanism rather than an ohmic gear mechanism, it is possible to increase the opening and closing speed of the water gate by selecting the gear ratio.

Next, when the water gate is closed due to its own weight, the clutch is released using the self-returning weight lowering lever. As a result, the screw brake becomes free, and the centrifugal brake is activated to lower the water gate at a predetermined lowering speed.

(Example) An embodiment of the present invention will be described below.

First, the differential gear mechanism number will be explained using FIG. 2. A gear 33 is fixed to the side gear 32 of the differential gear mechanism 31, and a gear 35 is fixed to the side gear 34. The side gears 33 and 34 are supported by an output shaft 36 via a bearing 37, and the output shaft 36 is supported by a bearing 38. In addition, the output shaft 36 is provided with a shaft 3 so as to cross the output shaft 36 at right angles.
9 is fixed, and each side gear 32 is attached to this shaft 39.
．． A gear 40 meshing with 34 is pivotally supported. gear 35
A gear 41 is provided to mesh with the gear 33, and a gear 42 is provided to mesh with the gear 33.

In FIG. 1, the rotary drive device 43 includes gears 44, 45
．． 46 to a gear 33 fixed to the side gear 32 of the differential gear mechanism 31. Differential gear mechanism 31
A gear 41 meshing with a gear 35 fixed to a side gear 34 is fixed to a shaft 47 supported by a casing 49 via a bearing 48 .

A bevel gear 50 is fixed to the shaft 47. 51
is a centrifugal brake, the shaft 53 of which is rotatably supported by the casing 49 via a bearing 52, and a bevel gear 57 that meshes with the bevel gear 50 is fixed to the tip of the shaft 53. 54 is a clutch, the shaft 56 of which is rotatably supported by the casing 49 via a bearing 55, and a bevel gear 57 that meshes with the bevel gear 50 is fixed to the tip of the shaft 56.

A screw brake 59 is attached to the shaft 58 on the other side of the clutch 54.
is installed. A rotating member 61 provided with a manual handle 60 is provided with a shaft 63 supported by a bearing 62, and a gear 64 that meshes with a gear 60 of a screw brake 59 is fixed to the tip of this shaft 63. 65 is clutch 5
Spring 6 for automatically returning 4 to the connecting direction
It is a self-weight opening/closing lever equipped with 6. A gear 68 is attached to the shaft 36.
is fixed, and the rotation is transmitted to the pin gear 74 via the gears 69, 70, 71, 72, 73, and the pin 67 is engaged with the pin gear 74, and the rotation of the pin gear 74 causes the pin 67 to be rotated. moves up and down, and a water gate (not shown) is opened and closed.

The operation of this embodiment configured in this way will be described next.

(al) The case of opening and closing the water gate with the rotary drive device 43 will be explained in detail. First, unless the self-weight opening/closing lever 55 with an automatic return function is operated, the clutch 54 is connected, so the screw brake 59, The side gear 34 is self-locked by the centrifugal brake 51.Thereby, the rotation of the rotary drive device 43 rotates the gear 33 via the gears 44, 45, 46., and the side gear 32 with the gear 33 fixed is rotated accordingly. is rotated, and this side gear 3
2, the shaft 39 turns around the output shaft 36, and the rotation of the side gear 32 is extracted to the output shaft 36. In this way, the rotation of the rotary drive device 43 is output to the output shaft 36. And output shaft 36) rotation is gear 68.69
．． 70, 71, 72, and 73 to the pin gear 74, which moves the pin 67 up and down to open and close a water gate (not shown).

In the opening/closing operation of the water gate by the rotary drive device 43, both the centrifugal brake 51 and the screw brake 59 only contribute to self-locking the side gear 34 and do not act as any load on the one-rotation drive device 43. Moreover, since the handle 60 does not rotate, it is safe.

fb1 Next, the case where the water gate is opened and closed by manual operation will be explained. First, the conditions that require manual operation are:
This is when the rotary drive device 43 is stopped for some reason. Therefore, the side gear 32 has gears 44, 45.
The clutch 54 is self-locked by the rotary drive device 43 via the clutches 46 and 33, and the clutch 54 is automatically restored and remains connected unless the self-weight opening/closing lever 65 is operated. Therefore, when the handle 60 is turned, the rotation is caused by the gear 6
4.60, the gear 41 is rotated via the bevel gear 57.50, and this rotation is transmitted to the gear 35. Along with this, the side gear 34 to which the gear 35 is fixed is rotated, and as the side gear 34 rotates, the shaft 39 rotates around the output shaft 36, and the rotation of the side gear 34 is extracted to the output shaft 36. In this way, the rotation of the handle 60 is controlled by the output shaft 3.
6 is output. The rotation of the output shaft 36 is controlled by the gear 68.
．． Bin gear 74 via 69.70.71.72.73
, and moves the bottle 67 up and down to open and close a water gate (not shown).

Further, during this manual operation, the centrifugal brake 51 is also driven via the bevel gear 57, but if the rotational speed due to manual operation is slow, there is no great braking effect, and the load of manual operation is quite small. In addition, since a worm gear is not used but a gear 64.60.4135 and a bevel gear 50.57 are used, by selecting the gear ratio appropriately, it is possible to determine the opening and closing speed of the water gate by manual operation. . (C) Next, the case where the water gate is closed by its own weight will be explained. The case where the water gate is closed by manual operation is an emergency such as when the rotary drive device 43 is not driven during a power outage and the water gate must be closed quickly.

In such an emergency, first, the self-weight opening/closing lever 65 is operated to disconnect the clutch 54 and unlock the screw brake 59. As a result, the bottle gear 74 is rotated by the weight of the water gate suspended from the bottle 67. This rotation of the pin gear 74 causes the gears 73.72.7 to
1.70.69.68 to rotate the output shaft 36. This rotation of the output shaft 36 causes the shaft 39 to rotate, and the rotation of the output shaft 36 is transmitted to the side gear 34. here,
Rotary drive 43 via gears 33.46.45.44
Since it is stopped, the centrifugal brake 51 is driven via the gear 35.41 and the bevel gear 50.54, and these rotary drive devices 43 are provided with a locking function, and the centrifugal brake 52 is provided with a braking function. and close the flood gate at the specified descending speed. When the water gate is closed to a predetermined position, when you release your hand from the self-weight opening/closing lever 65, the clutch 54
will automatically return and connect. Since the clutch 54 is automatically returned and connected in this way, the rotary drive device 43 is then driven to open and close the water gate, and the water gate can be opened and closed manually by operating the handle 60. It is also possible to open and close. Further, since the clutch 54 is not connected until the automatic opening/closing lever 65 is released, the handle 60 does not rotate and is safe.

(Effects of the Invention) As detailed above, according to the present invention, a screw brake is connected to one of the two side gears of the differential gear mechanism via a clutch mechanism, and a centrifugal brake device is connected to the gear mechanism. Since the screw brake can only contribute to self-locking the side gear, and the output shaft of the rotary drive device is connected to the other side gear via the gear mechanism,
The rotation of the rotary drive device is output to the output shaft of the differential gear mechanism, and the screw brake and centrifugal brake device can open and close the water gate without applying any load to the rotary drive device. This reduces running costs.

In addition, when manually opening and closing the water gate, the handle is connected to the screw brake via a spur gear mechanism rather than an ohmic gear mechanism, so by selecting the gear ratio, the speed at which the water gate opens and closes can be increased. This makes it possible to improve the operability.

Furthermore, when the water gate is closed due to its own weight, the clutch is released by the automatic return type dead weight lowering lever, so when the dead weight lowering lever is released, the clutch automatically returns and is connected. Since the clutch can always remain connected when the hand is released, there is no possibility that the manual or rotary drive device will be unable to open and close the flood gate due to human factors, improving operability and safety. can significantly improve performance.

In addition, since an actuating electromagnetic clutch is not used, there are almost no parts that deteriorate due to idleness or those that are likely to deteriorate due to idleness, and its service life can be significantly extended.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view showing a partially enlarged differential gear mechanism in Fig. 1, and Fig. 3 is a conventional one using an operating gear mechanism. FIG. 4 is a schematic diagram of a conventional water gate opening/closing device using an operating electromagnetic clutch. Fig. 1q 31... Operating gear mechanism 32, 34... Side gear 43... Rotary drive device 51... Centrifugal brake 54... Clutch 59... Screw brake 60. ···handle

Claims (1)

[Claims] (1) A gear is fixed to each of the two side gears of the differential gear mechanism, and the output shaft of the rotary drive device is connected to one of the gears via the gear mechanism, and a clutch mechanism is connected to the other gear via the gear mechanism. A water gate opening/closing device characterized in that a screw brake and a centrifugal brake device are connected to each other, the clutch mechanism is provided with an automatic return type self-weight lowering lever, and the screw brake is connected to a manual handle via a gear mechanism.