JP2000205429A - Water gate opening/closing machine with power-assist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preliminarily select a normal manual operation and an operation by the use of power-assist. SOLUTION: With this power-assist mechanism 10, an input shaft 20 directly connected to a hand-powered handle 4 on the left end, an output shaft 21 arranged coaxially with the input shaft 20, in intermediate shaft 22 arranged below and parallel to the input shaft 20, the output shaft 21, are rotatably born and supported in a case 11, and a switching clutch 16 is connected to between the input shaft 20 and the output shaft 21, and further an output shaft of an assist motor of an assist-electric motor device 12 is connected to the left end of the intermediate shaft 22 through a one-way clutch. A sprocket 23 fixed on the input shaft 20 and a first sprocket 24 fixed on the intermediate shaft 22, and an output sprocket 27 fixed on the output shaft 21 and a second sprocket 26 fixed on an assist shaft 29 are respectively connected to each other by a first chain 25 and a second chain 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual handle type switch for opening and closing a water gate by moving the water gate up and down. The present invention relates to a water gate switchgear with power assist that has reduced driving operation.

[0002]

2. Description of the Related Art A manually operated gate opening / closing device for manually rotating a handle for vertically driving a water gate in a drainage gutter, an agricultural waterway or the like is relatively frequently used. The management of these small sluice gates is often entrusted to the private sector by public enterprises or irrigation associations. That is hard work. That is, in this manual handle type water gate switchgear, it is difficult to operate at a stroke from a fully closed state to a fully opened state by one person even if it is a small facility. This is particularly problematic when it is necessary to quickly open and close the floodgate to respond to an emergency.

It is conceivable to make this manual gate switch electric, but the conventional electric gate switch is excellent in terms of reducing the load on the driver, but the equipment becomes relatively large, Moreover, the mechanism is complicated and the cost is high. That is, equipment such as an operation panel and a power supply lead-in device is required in addition to the water gate switchgear main equipment, and the cost is high.

[0004] Furthermore, even if an attempt is made to adopt an electric type, it cannot be adopted where it is difficult to receive commercial power. On the other hand, the electric sluice gate switch currently used for relatively large sluice gates is large in size and complicated for the above-mentioned reason.

Accordingly, the present inventor has already added a simple power assist mechanism to a manual water gate switchgear to share the load with both the electric motor and the manual force by using the combined force of the manual force. (Japanese Patent Application No. 9-352329) has proposed a semi-manual / semi-electrically operated water gate switch that can reduce the amount of water.

That is, the present invention relates to a manual handle switchgear for opening and closing a water gate by moving the water gate up and down. When the water gate is moved up and down by a manual handle, a drive system by a motor is connected to a rotary drive system of the manual handle. In addition, the load torque when the water gate is driven to rise is measured, and when the load torque exceeds a preset torque, the motor incorporated in the drive system of the water gate is activated to assist the drive torque of the manual handle. A water gate switchgear with an electric assist as described above.

[0007]

However, the manual gate switch must be opened and closed only by human power, and requires a considerable amount of physical strength. Operation may become impossible. In addition, in the above-described water gate switchgear with electric assist proposed by the inventor, since the manual drive system and the assist motor drive system are constantly connected, when the motor is not driven (for example, when the torque is constant). In such a case, the motor must be manually turned on when the power is not reached, when there is no power supply, when there is a failure, and so on, so that there is a problem that the load is further increased and the inside of the motor is damaged. In particular, in an emergency such as a disaster, there is a case where the motor cannot be used due to a power failure, running out of battery, or the like, which is problematic.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power gate switchgear with a power assist which can reduce the manual force by sharing the load with both the electric motor and the manual force as power. To provide.

It is another object of the present invention to provide a power gate switchgear with power assist in which a normal manual operation and a power assist operation can be selected in advance. It is still another object of the present invention to provide a power gate switchgear with power assist in which rotation is not transmitted to the assist motor when a normal manual operation is selected.

[0010]

In order to solve the above-mentioned problems, a water gate switchgear with power assist of the present invention measures a load torque when the water gate is driven up and down, and sets the load torque to a preset torque. In the case of a water gate opening and closing device with a power assist mechanism for starting the assist motor incorporated in the drive system of the water gate and assisting the driving torque of the manual handle, when switching to the normal opening and closing side, When the manual handle input shaft and the output shaft for driving the floodgate are directly connected, and switched to the assist open side, the power assist mechanism is driven when the load torque is equal to or more than a certain value, and the output shaft is Add drive torque. The switching clutch is provided in this manner.

The water gate switchgear with power assist of the present invention comprises an intermediate shaft for transmitting rotation of the input shaft of the manual handle to the power assist mechanism and the output shaft, and a switching clutch. A first clutch means for directly connecting or releasing the input shaft side and the output shaft side of the manual handle, and a second clutch means for transmitting or releasing the rotation output of the power assist mechanism to the output shaft. . Further, it is more preferable to provide a one-way clutch between the power assist mechanism and the output shaft.

[0012] More specifically, the water gate switchgear with power assist of the present invention measures a load torque when the water gate is driven to rise, and when the torque exceeds a preset torque, the water gate is operated. In a water gate opener with a power assist mechanism for activating the assist motor incorporated in the drive system and assisting the drive torque of the manual handle, when switching to the normal open / close side, the manual handle input shaft and output shaft Is connected directly, and when the assist is switched to the open side, a switching clutch is provided to drive the assist motor when the torque exceeds a certain level and to add drive torque, so power assist due to power failure, running out of battery, failure, etc. If the mechanism cannot be used, set the switching clutch to the normal side in advance,
It is the same as a normal sluice switch, and anyone can safely operate it.

When the switching lever is turned to the normal opening / closing side, the water gate switch can be driven directly from the manual handle. When the water gate opening / closing switch is switched to the assist opening side, the power assist motor assists lightly. The water gate switch can be driven.

Further, in the water gate switchgear with power assist of the present invention, since the speed increasing mechanism is provided between the assist motor and the output shaft, the speed increasing mechanism is provided only when the driving torque is applied by the assist motor. Because it works, the gate can be opened and closed more quickly only during power assist.

Further, the water gate switchgear with power assist of the present invention is provided with a one-way clutch between the assist motor and the output shaft. Since the rotor does not rotate, the operation of the manual handle does not become heavy and the motor is not damaged.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a power assisted water gate switchgear of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof. A switch body 2 is installed on the gantry 1, and a rack bar 3 is disposed on the switch body 2 so as to be vertically movable.
The lower end of the rack bar 3 is connected to the upper end of a floodgate.

The rack bar 3 meshes with a pinion (not shown). The pinion is housed in a transmission box 6 and is driven by a manual handle 4 via a power assist mechanism 10. The vertical movement of the rack bar 3 driven by the manual handle 4 and the power assist mechanism 10 causes the water gate fixed to the lower end to move up and down. Although a self-locking mechanism and the like are built in the transmission box 6, these mechanisms are well-known and are not the gist of the present invention, and therefore description thereof is omitted.

The power assist mechanism 10 is interposed between the transmission box 6 and the manual handle 4 and is fixed on the gantry 1 like the switch body 2. In the embodiment of the present invention, the power assist mechanism 10 includes a battery 14 for power assist and an assist motor (not shown). A lever provided on the upper part of the power assist mechanism 10 is a clutch lever 15 for switching power assist, and a solar cell support 5 is disposed on the gantry 1 near the switch body 2, and a solar cell support 5 is provided thereon. 13 are arranged. The solar cell 13 is a power supply for driving the assist motor.

Next, the details of the power assist mechanism 10 of the present invention will be described with reference to FIGS. FIG. 4 is a front sectional view, and FIG. 5 is a plan sectional view. The power assist mechanism 10 is housed in a case 11, and has an input shaft 20 directly connected to the right hand handle 4.
Output shaft 21, input shaft 20, and output shaft 2 coaxially arranged
Each of the intermediate shafts 22 and the like arranged below and in parallel with 1
The case 11 is rotatably supported by bearings.

An input shaft 20 directly connected to the manual handle 4
A large diameter portion 30 is formed at the left end (on the upper side of the figure), and the input sprocket 23 is fixed to the outer periphery with a bolt so as to be able to rotate integrally. Further, the input sprocket 23 is connected to a clutch coupling 23 ', in which a clutch means composed of a friction plate is housed as described later. A hole 31 is formed in the center of the large-diameter portion 30 described above, and the right end of the output shaft 21 is rotatably supported by the bearing in the hole 31. The output shaft 21 extends to the left end of the case 11 and is connected to the input shaft of the transmission box 6 of the switchgear. An output sprocket 27 is rotatably supported on the output shaft 21 by a bearing.
Is connected to the clutch coupling 27 '. The clutch coupling 27 ′ is connected to the input sprocket 23.
Like the clutch coupling 23 ', a clutch means formed of a friction plate is accommodated therein.

On the output shaft 21, an input sprocket 23
The clutch 16 is provided between the output sprocket 27 and the output sprocket 27, and the output shaft 21 is connected to the input sprocket 23 or the output sprocket 27 by switching. The clutch 16 is a known multi-plate clutch, and a friction plate that engages with serrations formed on the inner periphery of a clutch coupling 23 ′ that is not connected to the input sprocket 23, and friction that is stopped by the output shaft 21. The plates are arranged alternately.

Similarly, on the opposite side, a friction plate that engages with serrations formed on the inner periphery of a clutch coupling 27 ′ connected to the output sprocket 27, and friction that is stopped by the output shaft 21. The plates are alternately arranged, and the output shaft 21 and the input sprocket 23 are integrated by moving the operating ring 18 of the clutch 16 to the right in FIG. 4 to tighten and fix the right friction plates together. Has become. At that time, the friction plates on the opposite output sprocket 27 side are not tightened, so that the friction plates rotate relative to each other and no rotational force is transmitted.

When the operating ring 18 of the clutch 16 is moved in the opposite direction (to the left in FIG. 4), the output sprocket 27 and the output shaft 21 are integrated, and the input sprocket 23 is released. The operation of the clutch 16 is performed by sliding the operation ring 18 with the clutch operation arm 17 operated by the power assist switching clutch lever 15.

An intermediate shaft 22 is rotatably supported by bearings below and parallel to the input shaft 20 and the output shaft 21 described above. The first sprocket 24 is key-fixed to the intermediate shaft 22 at a position corresponding to the input sprocket 23 fixed on the input shaft 20, and the second sprocket 26 is positioned at a position corresponding to the output sprocket 27 on the output shaft 21. The key has been fixed.

Further, at the left end of the intermediate shaft 22, an assist shaft 29 of the electric motor device 12 for power assist is provided.
Is connected via a first one-way clutch (not shown) so as to allow forward rotation (rotation in a direction in which the floodgate opens) of the first spring. Also, an assist motor (not shown) and an assist shaft 2
9, a gear reduction mechanism (not shown) is arranged.
When the assist shaft 29 is driven by the assist motor,
It is driven via a second one-way clutch (not shown) and a speed reduction mechanism.

The electric motor device 12 for power assist includes:
Since the function and mechanism are substantially the same as those of the known mechanism that assists to reduce the stepping torque of the bicycle pedal, the structure and function will not be described in detail here. The input sprocket 23 and the first sprocket 24 described above, and
Between the second sprocket 26 and the output sprocket 27,
They are connected by a first chain 25 and a second chain 28. Further, a torque detecting mechanism capable of detecting a driving torque of the floodgate switch is provided. As this kind of torque detecting mechanism, the one disclosed in Japanese Patent Application No. 9-352329 may be used.

Alternatively, for example, the driving torque can be detected by a known planetary gear mechanism as a torque detector. When a torque signal from the torque detector exceeds a predetermined set value, a controller (not shown) for driving and controlling an assist motor (not shown) is provided.

[Manual operation of a water gate switchgear] Next, the operation of the power gate switchgear with power assist of this embodiment will be described. First, the power assist switching clutch lever 15 is moved to the normal opening / closing side (A). The normal opening / closing side (A) is for a normal steering operation. By operating the power assist switching clutch lever 15, the operating ring 18 of the clutch 16 is moved rightward in the drawing of FIG. 4 via the clutch operating arm 17, and the output shaft is controlled by the clutch means in the clutch coupling 23 '. 2
1 and the input sprocket 23 on the input shaft 20 are connected. At this time, since the engagement between the clutch means in the clutch coupling 27 'and the output sprocket 27 has been released, the output sprocket 27 and the output shaft 21 are not connected.

In this case, the rotation of the manual handle 4 is transmitted to the sluice switch via the input shaft 20, the clutch 16, and the output shaft 21, and the sluice can be opened only by the turning force of the manual handle 4. When the manual handle 4 is rotated in the reverse direction (the direction in which the water gate is closed), the rotation of the manual handle 4 is transmitted to the water gate switch via the input shaft 20, the clutch 16 and the output shaft 21, and the rotational force of the manual handle 4 itself is changed. Can close the sluice.

When the manual handle 4 is rotated forward (in the direction of opening the water gate) as described above, the rotation is transmitted directly from the input shaft 20 to the output shaft 21.
3 also rotates, so that the intermediate shaft 22 rotates. Intermediate shaft 22
Rotates, and a first one-way clutch (not shown)
The assist shaft 29 connected via the shaft also rotates, so that the second sprocket 2 fixed to the assist shaft 29
6, the output sprocket 27 is also rotated, but since the output sprocket 27 is not connected to the output shaft 21, the output sprocket 27 idles on the output shaft 21. Accordingly, the assist motor does not operate because the torque detector does not operate.

The rotation of the assist shaft 29 is absorbed by a second one-way clutch (not shown) interposed in a speed reduction mechanism between the assist shaft 29 and the output shaft of the assist motor, and the rotation is transmitted to the assist motor. Absent. Also, when the manual handle 4 is rotated in the reverse direction (to close the water gate), the intermediate shaft 2
2 also rotates reversely. However, the rotation is not transmitted to the assist motor because it is absorbed by the first one-way clutch disposed between the intermediate shaft 22 and the assist shaft 29.

[Assist Operation] On the other hand, when assist is required for operating the water gate, the clutch lever 15 for switching power assist is moved to the assist open side (B). By operating the power assist switching clutch lever 15 to the assist open side (B), the operating ring 18 of the clutch 16 is moved to the left side in FIG. And the input sprocket 23 is disengaged, and the clutch means in the clutch coupling 27 'is engaged with the output sprocket 27 to be integrated. In this case, the rotation of the manual handle 4 is not transmitted directly from the input shaft 20 to the output shaft 21, and the output shaft 21 is driven via the assist shaft 29.

In this case, when the manual handle 4 is rotated forward (to open the water gate), the intermediate shaft 22 is rotated by the input sprocket 23, the first chain 25, and the first sprocket 24. Further, the output sprocket 27 is rotated by the assist shaft 29, the second sprocket 26, and the second chain 28 via the first one-way clutch, and the output shaft 21 is rotated since the output sprocket 27 and the output shaft 21 are integrated. Driven.

Then, since the second chain 28 transmits the rotational force, the tension on the drive side increases, and the controller operates the assist motor of the power assist electric motor device 12 based on a signal from the torque detector accompanying the drive force. Let it. The rotation of the assist motor rotates the assist shaft 29 and the second chain 28, and the torque of the assist motor is transmitted to the output shaft 21. Therefore, in this case, the driving force for opening the water gate is a combination of the rotation torque of the manual handle 4 and the rotation torque of the assist motor.

The gate can be opened quickly by setting the gear ratio between the second sprocket 26 and the output sprocket 27 to a speed increasing ratio on the assumption that the assist drive is performed by the assist motor. When the manual handle 4 is rotated in the opposite direction (the direction in which the water gate is closed),
The intermediate shaft 22 also rotates in the reverse direction, but the first one-way clutch does not transmit torque to the second chain 28, and the assist motor shaft (not shown) does not rotate.

(Other Embodiments) In this embodiment, the solar cell 13 and the battery 14 are used. However, it is needless to say that the solar cell 13 and the battery 14 can be used in a place where commercial power can be drawn, or the battery 14 alone may be used. The torque detector is an example, and other known torque detectors can be provided at arbitrary positions and used.

[0037]

According to the above construction, the water gate switchgear with power assist of the present invention has the clutch for switching power assist, and when the power assist is not used, the switch lever is tilted to the normal opening / closing side. This allows the gate switch to be driven directly from the manual handle, and when switched to the power assist side, the gate switch can be driven lightly by the assist from the power assist motor, and the output shaft is connected to the assist shaft. The speed can be increased by selecting the gear ratio of the power transmission system to the sluice, so that the sluice gate can be operated with the speed and power according to the operation.

When the power assist mechanism cannot be used due to a power failure, running out of battery, failure, or the like, the clutch is set to the normal opening / closing side in advance, so that it becomes the same as a normal manual water gate switch, and anyone can safely operate it. can do. Further, since the one-way clutch is provided between the assist shaft and the power assist motor, the rotor of the assist motor does not rotate, so that the operation does not become heavy and the motor is not damaged.

[Brief description of the drawings]

FIG. 1 is a front view showing the entirety of a water gate switchgear with power assist of the present invention.

FIG. 2 is a side view of a water gate switchgear with power assist of the present invention.

FIG. 3 is a plan view of a water gate switchgear with power assist of the present invention.

FIG. 4 is a front sectional view of the power assist mechanism of the present invention.

FIG. 5 is a plan sectional view of the power assist mechanism of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Stand 2 ... Switch body 3 ... Rack bar 4 ... Handle 10 ... Assist drive mechanism 12 ... Assist motor device 15 ... Power assist switching clutch lever 16 ... Power assist switching clutch 20 ... Input shaft 21 ... Output shaft 22 ... Intermediate shaft 23 Input sprocket 24 First sprocket 25 First chain 26 Second sprocket 27 Output sprocket 28 Second chain 29 Assist shaft

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kozaburo Tsurumaru 15-1 Ise-cho, Saga City, Saga Prefecture F-term in Mizota Co., Ltd. (Reference) 2D019 AA57 BA21 3H062 AA05 CC01 CC20 EE03 FF41 HH03 3H063 BB50 DA02 DA14 GG06

Claims (3)

[Claims] A first step of measuring a load torque when the water gate is driven up and down, and, when the load torque exceeds a preset torque, activating an assist motor incorporated in a drive system of the water gate to activate the manual handle; When the switch is switched to the normal open / close side in the sluice switch with a power assist mechanism that assists the drive torque of the drive gate, the manual handle input shaft is directly connected to the output shaft for driving the sluice, and is switched to the assist open side. A switching clutch for driving the power assist mechanism to apply the driving torque of the output shaft when the load torque becomes equal to or more than a predetermined value. Machine. 2. The water gate switchgear with power assist according to claim 1, wherein an intermediate shaft for transmitting rotation of the manual handle input shaft to the power assist mechanism and the output shaft, and the switching clutch comprises: A first clutch unit for directly connecting or releasing the input side of the manual handle and the output shaft side; and a second clutch unit for transmitting or releasing the rotation output of the power assist mechanism to the output shaft. A water gate switch with power assist. 3. The gate opening / closing device with power assist according to claim 1, wherein a one-way clutch is provided between the power assist mechanism and the output shaft. Machine.