JP7290259B2 - Wire rope winch type gate opening and closing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rope winch type gate opening/closing device that raises a gate body for opening and closing a water gate or a landlock by a lifting action and lowers the door body by its own weight.

In general, waterways such as rivers are closed as appropriate to store water, raise the water level to allow water to flow into branched channels, etc., and adjust the flow rate of water in the channel. A water gate is provided to close or open the waterway. Flood wall gates, which are normally opened for traffic and closed during a tsunami or when the water level rises, are provided at discontinuities such as seawalls and river embankments. As such a water gate or landlock, the gate body is raised by power to open a waterway or a discontinuous part, and is lowered by its own weight to close the waterway or a discontinuous part. devices are widely used. Such a self-gravity type gate opening and closing device can lower the gate body by its own weight to close the floodgate or landlock even when the power source loses its function in the event of a disaster such as an earthquake or typhoon. It is advantageous to prevent or reduce the damage caused by tsunamis.

A self-gravity descent type gate opening and closing device generally has a wire rope for suspending the door body and a rotatable wire drum for winding the wire rope, and a drum drive mechanism equipped with an electric motor, a speed reducer, and the like. Rotate the wire drum and wind the wire rope to lift the door body and open the gate (wire rope winch type). Further, when closing the gate, the mechanical engagement between the electric motor and the wire drum is released, the door body is lowered by its own weight, and the wire rope is unwound to close the gate (for example, Patent Document 1). 3).

JP 2013-50019 A JP 2014-47471 A JP 2015-71922 A

However, in the conventional wire rope winch type gate opening and closing devices disclosed in, for example, Patent Documents 1 to 3, the drum drive mechanism is a very large motor equipped with an electric motor, a plurality of brake devices, a differential gear mechanism, a speed reducer, and the like. Since it is large-scale and its structure is complicated, there is a problem that its construction cost and operating cost are high (first problem) . As will be described later, if a standby motor or a standby engine is installed in addition to the regular motor, the structure becomes more complicated, and construction and operating costs increase (second problem) .

In conventional wire rope winch gates, the electric motor and control panel are normally powered by commercial power supply. ), or when the motor or control panel is damaged or destroyed (hereinafter, such a situation is referred to as an "emergency"), it is difficult to open and close the gate. Therefore, in the wire rope winch type gate opening and closing device, it is desirable to provide a facility that enables opening and closing of the gate in an emergency.

For example, according to the Ministry of Land, Infrastructure, Transport and Tourism's "Technical Standards for Dam and Weir Facilities (Draft)" and "Design Guidelines for Gate Opening and Closing Devices (Mechanical Type) (Draft)," water gate equipment (gates) require "backup power for opening and closing. Equipment", it is desirable to install a standby motor in consideration of the safety and certainty of operation, and to install a dedicated standby power generation facility on the machine side. In addition, the gate operating system has a fault-tolerant system, which means that even if a part of the component fails or stops, the system can be switched to a backup system to maintain its function and continue to operate normally. In addition to this, it is recommended to set up an appropriate backup power source according to the importance of the facility, and to ensure the minimum opening and closing function even in the event of a failure.

Generally, a wire rope winch type gate opening and closing device is provided with a manual handle, but it is extremely difficult to quickly open and close the gate with the manual handle in an emergency. It is also possible to connect a "portable shaft operator" to the switching device as a backup power source for the existing electric motor. It has a very slow speed of 01 m/min, and it is necessary to stop and cool down the operation when the flexible shaft abnormally heats up. Also, even if an opening/closing mechanism is used to replace the portable shaft opening/closing mechanism, the internal gear of the switching device was developed on the premise of manual operation. Have difficulty. Therefore, there is a need for a more practical backup power source.

Therefore, it is conceivable to install a backup generator as a backup of the commercial power source. However, such measures have the problem that the equipment costs are very high and that they are useless when the motor or control panel is damaged or destroyed.

In addition, as a general standby power system for a wire rope winch type gate opening and closing device, a method of permanently installing a standby power source such as installing a standby electric motor or installing a standby engine is also conceivable. Permanent installation of such a standby power source is excellent in speed as a backup for equipment that has a very high social impact in the event of a failure, but both require a large amount of capital investment and maintenance management costs. Also, there is a problem that a considerably large installation space is required. The method of installing a standby motor does not require a switching operation and has the advantage of being as easy to operate as a regular motor, but it has the problem of being useless if the control panel is damaged or destroyed. be. In addition, the method of installing a spare engine has the advantage of being able to operate even if the power supply is lost or the control panel fails, but there is a problem that periodic test runs are necessary because starting failures are likely to occur.

The present invention has been made to solve the first and second problems of the prior art, and is a wire rope winch type gate opening and closing that has a simple and compact structure and requires less installation and maintenance costs. It provides an apparatus.

A wire rope winch type gate opening and closing device according to a first aspect of the present invention, which has been made to solve the above problems, powers up a gate body for opening and closing a water gate or a landlock by a lifting operation, while the gate body is configured to be lowered by its own weight (gravity). This gate opening/closing device includes a wire rope, a rotatable wire drum, a reduction gear, an electric motor, a hydraulic motor, and a hydraulic circuit, and if necessary, an emergency hydraulic system .

Here, the wire rope suspends (hangs) the door. The wire drum winds (wraps) the wire rope. The speed reducer includes an output shaft that is mechanically engaged with (or coupled to) the rotating shaft of the wire drum and rotationally drives the rotating shaft or is rotationally driven (reverse rotational drive) by the rotating shaft; an input shaft; and a gear mechanism (meshing gear mechanism) that decelerates the rotation of the input shaft and transmits it to the output shaft, or accelerates the rotation of the output shaft and transmits it to the input shaft. The electric motor has a motor shaft that is in dynamic engagement with (or is coupled to) an input shaft to rotationally drive the input shaft or is rotationally driven by the input shaft. The hydraulic motor is mechanically engaged with the input shaft or the gear rotation shaft (intermediate shaft) of the gear mechanism other than the input shaft and the output shaft, and rotationally drives the input shaft or the gear rotation shaft (intermediate shaft), or the input It has a hydraulic motor rotary shaft that is rotationally driven (counter-rotationally driven) by a shaft or gear rotary shaft (intermediate shaft). A hydraulic circuit circulates hydraulic fluid between the hydraulic motor and the hydraulic fluid reservoir. The emergency hydraulic system can be arbitrarily (or appropriately) connected to the hydraulic circuit to supply and discharge hydraulic oil to and from the hydraulic motor.

A wire rope winch-type gate opening and closing device according to a second aspect of the present invention includes a wire rope, a rotatable wire drum, a speed reducer, an electric motor, a hydraulic motor, and a hydraulic circuit. Equipped with an emergency hydraulic system as required . In this gate opening/closing device, the hydraulic motor is dynamically engaged with (or coupled with) the electric motor rotating shaft, and rotates the input shaft with or without the electric motor rotating shaft. It has a hydraulic motor rotary shaft that is rotationally driven (reverse rotationally driven) by an input shaft. Other configurations of this gate opening/closing device are the same as those of the gate opening/closing device according to the first aspect of the present invention.

In the wire rope winch type gate opening and closing device according to the second aspect of the present invention, the hydraulic motor rotating shaft is mechanically connected to the electric motor rotating shaft on the side opposite to the side where the electric motor rotating shaft is mechanically engaged with the input shaft. It may be engaged. Moreover, the hydraulic motor rotating shaft may engage with the electric motor rotating shaft on the side where the electric motor rotating shaft dynamically engages with the input shaft. A power switching device for differentially rotating the electric motor rotating shaft and the hydraulic motor rotating shaft may be arranged between the shafts.

In the gate opening/closing device according to the first and second aspects of the present invention, the hydraulic circuit includes a first hydraulic oil passage connecting one hydraulic oil supply/discharge port of the hydraulic motor and the hydraulic oil storage tank, and the other side of the hydraulic motor. It is preferable to have a second hydraulic oil passage connecting the hydraulic oil supply/discharge port and the hydraulic oil reservoir. In this case, the first hydraulic fluid passage is provided with a first on-off valve that opens and closes the first hydraulic fluid passage, and a first external connection port that communicates with the first hydraulic fluid passage on the hydraulic motor side of the first on-off valve. While interposed in the second hydraulic fluid passage, a second on-off valve for opening and closing the second hydraulic fluid passage, and a second external connection communicating with the second hydraulic fluid passage on the hydraulic motor side of the second on-off valve. Preferably, a port is interposed. In addition, the emergency hydraulic system has a port connector attached to one end that can be connected to the first external connection port (and/or the second external connection port) and the other end to a hydraulic oil container ( For example, a first oil passage provided with a hydraulic oil supply/discharge port that can be introduced into a hydraulic oil reservoir), and one end connected to a second external connection port (and/or a first external connection port) a second oil passage having a port connector attached thereto and having a hydraulic oil supply/discharge port at the other end thereof capable of introducing hydraulic oil into a hydraulic oil container (for example, a hydraulic oil reservoir); A hydraulic pump interposed in the first oil passage or the second oil passage and driven by a power source that operates independently; and an oil passage switching device (for example, an oil passage switching valve) for switching hydraulic oil supply and discharge routes in the first oil passage and the second oil passage.

A wire rope winch type gate opening and closing device according to a third aspect of the present invention includes a wire rope, a wire drum, a speed reducer, a hydraulic motor, and a hydraulic oil supply/discharge device. Equipped with emergency hydraulic system. In this gate opening/closing device, the hydraulic motor is mechanically engaged with an input shaft through a gear pair, or is coaxially connected to the input shaft to rotationally drive the input shaft, or is rotationally driven by the input shaft. It has a hydraulic motor rotary shaft that is (reversely driven). The hydraulic fluid supply/discharge device supplies/discharges hydraulic fluid to/from the hydraulic motor via two hydraulic fluid supply/discharge passages connected to the hydraulic motor. The emergency hydraulic system can be arbitrarily (or appropriately) connected to the hydraulic oil supply/discharge passage to supply/discharge hydraulic oil to/from the hydraulic motor. This gate opening/closing device does not have an electric motor. Other configurations of this gate opening/closing device are the same as those of the gate opening/closing device according to the first aspect of the present invention.

In the gate opening/closing device according to the third aspect of the present invention, the hydraulic fluid supply/discharge passage includes a first hydraulic fluid passage connected to one hydraulic fluid supply/discharge port of the hydraulic motor and a hydraulic fluid supply/discharge port of the other hydraulic motor. It preferably has a second hydraulic fluid passageway connected to the exhaust port. In this case, the first hydraulic fluid passage is provided with a first on-off valve that opens and closes the first hydraulic fluid passage, and a first external connection port that communicates with the first hydraulic fluid passage on the hydraulic motor side of the first on-off valve. While interposed in the second hydraulic fluid passage, a second on-off valve for opening and closing the second hydraulic fluid passage, and a second external connection communicating with the second hydraulic fluid passage on the hydraulic motor side of the second on-off valve. Preferably, a port is interposed. In addition, the emergency hydraulic system has a port connector attached to one end that can be connected to the first external connection port (and/or the second external connection port) and the other end to a hydraulic oil container ( For example, a first oil passage provided with a hydraulic oil supply/discharge port that can be introduced into a hydraulic oil reservoir), and one end connected to a second external connection port (and/or a first external connection port) a second oil passage having a port connector attached thereto and having a hydraulic oil supply/discharge port at the other end thereof capable of introducing hydraulic oil into a hydraulic oil container (for example, a hydraulic oil reservoir); A hydraulic pump interposed in the first oil passage or the second oil passage and driven by a power source (for example, a diesel engine) that operates independently, and the first oil passage and the second oil passage on the side of the port connector from the hydraulic pump It is preferable to include an oil passage switching device that is interposed across (straddles) and switches the working oil supply and discharge routes in the first oil passage and the second oil passage.

The gate opening/closing device according to the first to third aspects of the present invention does not require a large-scale and complicated power transmission mechanism such as a plurality of brakes and a differential gear mechanism. Since it is not necessary to install an engine, the structure of the gate opening/closing device or the gravity-lowering gate provided with the same can be made compact and simplified. In addition, even in the event of a disaster such as an earthquake or typhoon, when a power source such as a commercial power supply loses its function, the emergency hydraulic system can raise and lower the gate body to open and close the gate (sluice gate or landlock). and tsunamis can be prevented or mitigated. In this case, the emergency hydraulic system is extremely simple, compact, and low cost compared to other backup power sources, making it extremely advantageous as a backup power source.

FIG. 1(a) is a schematic partial cross-sectional side view of a wire rope winch type gate opening/closing device according to Embodiment 1 of the present invention, and FIG. 1(b) is a gate opening/closing device shown in FIG. 1(a). 2 is an enlarged partial cross-sectional side view of a reduction gear that constitutes the . FIG. 2 is a hydraulic circuit diagram showing the configuration of the hydraulic oil supply device of the gate opening/closing device shown in FIG. 1(a). FIG. 3 is a schematic side view of an emergency hydraulic system used in the gate opening/closing device shown in FIG. 1(a). FIG. 4 is a partial cross-sectional plan view of a wire rope winch type gate opening/closing device according to a modification of Embodiment 1 of the present invention. FIG. 5(a) is a schematic partial cross-sectional side view of a wire rope winch type gate opening/closing device according to Embodiment 2 of the present invention, and FIG. 5(b) is a gate opening/closing device shown in FIG. 5(a). 2 is an enlarged partial cross-sectional side view of a reduction gear that constitutes the . FIG. 6 is a hydraulic circuit diagram showing the configuration of the hydraulic oil supply device of the gate opening/closing device shown in FIG. 5(a). FIG. 7(a) is a schematic partial cross-sectional side view of a wire rope winch type gate opening/closing device according to Embodiment 3 of the present invention, and FIG. 7(b) is a gate opening/closing device shown in FIG. 7(a). 2 is an enlarged partial cross-sectional side view of a reduction gear that constitutes the . FIG. 8 is a hydraulic circuit diagram showing the configuration of the hydraulic oil supply device of the gate opening/closing device shown in FIG. 7(a). FIGS. 9A to 9D are schematic diagrams showing some specific examples of the form of engagement between the electric motor and the hydraulic motor in the gate opening/closing device according to Embodiment 2 of the present invention. FIGS. 10(a) to 10(d) show the power switching device of the present invention, which is arranged between the input shaft, the electric motor rotating shaft, and the hydraulic motor rotating shaft to differentially rotate the electric motor rotating shaft and the hydraulic motor rotating shaft. It is a schematic diagram which shows the specific example of the gate opening-and-closing apparatus which concerns on Embodiment 2. FIG.

Several embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
(Embodiment 1)
1 to 3, a wire rope winch type gate opening/closing device S1 for use in a gravity descent type water gate according to a first embodiment of the present invention will be described below. It should be noted that the gate opening/closing device S1 according to the first embodiment can also be applied to a self-weight descending lock.
As shown in FIGS. 1( a ) and 1 ( b ), a water gate 1 installed in a waterway (not shown) such as a river or an agricultural waterway raises and lowers a door body 2 that opens and closes the watergate by moving up and down. while the door body 2 is lowered by its own weight. That is, the water gate 1 is opened and closed by the vertical movement of the door 2 . The door 2 is suspended by a wire rope 3, and this wire rope 3 is wound around a wire drum 4. - 特許庁The wire drum 4 is coaxially attached to a rotating shaft 5 positioned at the center thereof, and rotates integrally with the rotating shaft 5 . The rotating shaft 5 is rotatably supported by a rotating shaft support portion 6 .

When the rotating shaft 5 and the wire drum 4 are rotationally driven by an electric motor 25 or a hydraulic motor 29 to be described later and rotate in a predetermined rotating direction (for example, clockwise when viewed from the rotating shaft support side), the wire rope 3 is rotated. The wire drum 4 winds the door body 2 upward. Further, when the door body 2 descends by its own weight (gravity), the wire drum 4 is rotated in the direction opposite to the predetermined rotation direction by the wire rope 3, and the winding of the wire rope 3 is unwound. The rotary shaft 5 is coaxially connected to the output shaft 9 of the helical speed reducer 8 (hereinafter referred to as the "speed reducer 8") by a connector 7 (coupling) on the side opposite to the wire drum 4 with respect to the direction in which the central axis extends. Concatenated. Here, instead of connecting the rotating shaft 5 and the output shaft 9 with the connecting tool 7, they may be dynamically engaged via a gear pair or the like to transmit power. It goes without saying that a speed reducer other than the helical speed reducer can be used for the gate opening/closing device S1.

In addition to the output shaft 9 , the speed reducer 8 includes an input shaft 11 and first to third intermediate shafts 12 to 14 arranged between the input shaft 11 and the output shaft 9 . Although not shown in detail, the output shaft 9 , the input shaft 11 and the first to third intermediate shafts 12 to 14 are rotatably supported by bearings fixed to the housing 10 of the speed reducer 8 . A first gear 15 is coaxially attached to the input shaft 11 . A second gear 16 and a third gear 17 are coaxially attached to the first intermediate shaft 12 . A fourth gear 18 and a fifth gear 19 are coaxially attached to the second intermediate shaft 13 . A sixth gear 20 and a seventh gear 21 are coaxially attached to the third intermediate shaft 14 . An eighth gear 22 is coaxially attached to the output shaft 9 . Helical gears are used for the first to eighth gears 15 to 22 . Needless to say, gears other than helical gears may be used.

Here, the first gear 15 and the second gear 16 mesh with a predetermined gear ratio greater than 1 (eg, 5.1), and the third gear 17 and the fourth gear 18 mesh with a predetermined gear ratio greater than 1 (eg, 5.1). 3.6), the fifth gear 19 and sixth gear 20 mesh at a predetermined gear ratio greater than one (eg, 4.0), the seventh gear 21 and eighth gear 22 mesh at a predetermined gear ratio greater than one. It meshes with a ratio (eg, 4.3). Thus, the reducer 8 increases the torque from the input shaft 11 to the output shaft 9 by a transmission ratio of approximately 315 and from the first intermediate shaft 12 to the output shaft 9 by a transmission ratio of approximately 62. When the door body 2 descends due to its own weight, the transmission gear ratio when torque is transmitted from the output shaft 9 to the input shaft 11 or the first intermediate shaft 12 (when driven in reverse) is the input shaft 11 or the first intermediate shaft 12. It is the reciprocal of the gear ratio when torque is transmitted from the intermediate shaft 12 to the output shaft 9 (speed is increased).

The gate opening/closing device S1 includes an electric motor 25 that rotationally drives the input shaft 11 when the door 2 is lifted during normal operation when the power source functions normally. A motor rotating shaft (not shown) fixed to the rotor of the electric motor 25 is coaxially connected to the input shaft 11 via a connector or coupling (not shown). Commercial power is supplied to the electric motor 25 from a power supply (not shown) via a lead 26 and a control panel 27 . The input shaft 11 and the electric motor rotating shaft may be dynamically engaged via a gear pair or the like instead of being connected by a connector or a coupling to transmit power.

Furthermore, the gate opening/closing device S1 has a hydraulic motor 29 . A hydraulic motor rotating shaft 31 that is an output shaft of the hydraulic motor 29 is coaxially connected to the first intermediate shaft 12 via a coupling 32 . Instead of connecting the first intermediate shaft 12 and the hydraulic motor rotating shaft 31 with the coupling 32, they may be dynamically engaged via a gear pair or the like to transmit power. A first hydraulic fluid passage 35 and a second hydraulic fluid passage 36 are provided between the hydraulic motor 29 and a hydraulic fluid storage tank 34 that stores hydraulic fluid. A circuit C1 is provided. The hydraulic oil storage tank 34 is a tank with a relatively small capacity (for example, 0.2 to 0.5 m ³ ) and is arranged at a position higher than the hydraulic motor 29 (for example, 1 to 10 m, or 5 to 20 m higher). ing.

The wire rope winch type gate opening/closing device S1 requires a rotational force to rotate the wire drum 4 in an emergency. From the point of view, the hydraulic motor 29 is used, which is generally compact and of simple construction. The hydraulic motor 29 has a function of combining an electric motor and a speed reducer in a mechanical gate opening and closing device, and is a machine with sufficient production control for general industrial use, high quality and reliability, and a track record of many uses. is.

As described above, in the gate opening/closing device S1, the electric motor 25 is connected to the input shaft 11, while the hydraulic motor 29 is connected to the first intermediate shaft 12. No source switching device or operating gear mechanism is provided. In general, when two power sources are provided in this type of gate opening and closing device, a switching device or a differential gear mechanism is installed between one power source and the other power source. The number of parts of the opening/closing mechanism increases, the structure becomes complicated, and a large amount of money is required for its installation (for example, 3 to 5 million yen). Therefore, since the main purpose of the gate opening/closing device S1 according to the present invention is to be used for emergency operation, no switching device or differential gear mechanism is provided. We are trying to reduce the occurrence rate, further reduce the cost, and promote the development or application to a large number of institutions and facilities that manage the water gates.

In addition, as will be described later, the emergency hydraulic device R can be adapted to various gate opening/closing devices as a portable type. On the other hand, the hydraulic motor 29 is not of a portable type, but of a permanent type that is fixed to the speed reducer 8 . This is due to the following reasons. That is, in order to input the output of the hydraulic motor 29 to the existing gate opening and closing device, a strong torque and constant rotation are required, and precise installation management (horizontality, shaft center height) is required. Therefore, if the hydraulic motor 29 is portable, installation management by a skilled operator is required. Furthermore, since the opening/closing torque and the number of rotations (required amount of oil) are unique design conditions for each gate opening/closing device, it is difficult to create a hydraulic motor that can be commonly used in various gate opening/closing devices. Therefore, the hydraulic motor 29 is of a permanent type from a comprehensive point of view. Since the hydraulic motor 29 is very inexpensive, even if the hydraulic motor 29 is permanently installed in each gate opening/closing device, the cost is not so high and the installation is not substantially hindered.

In the gate opening/closing device S1, the hydraulic motor rotating shaft 31 is connected to the first intermediate shaft 12 via the coupling 32. Therefore, when using the existing reduction gear 8, the reduction gear 8 or the first intermediate shaft 12 can be used. The shaft 12 must be modified or made so that it can be connected to the hydraulic motor rotary shaft 31 . In this case, without bringing the entire speed reducer 8 to the factory, the upper lid of the housing 10 is opened, the first intermediate shaft 12 and the second and third gears 16 and 17 attached thereto are removed, and the second gear is brought to the factory. , the third gears 16 and 17 are reused, and only the first intermediate shaft 12 needs to be renewed or machined. Therefore, this method of connecting the hydraulic motor rotating shaft 31 to the first intermediate shaft 12 is very advantageous in terms of delivery time and cost.

In the gate opening/closing device S1, the hydraulic motor rotating shaft 31 is connected to the first intermediate shaft 12 via the coupling 32, and the hydraulic motor rotating shaft 31 is located on the side opposite to the electric motor 25 with respect to the direction in which the input shaft central axis extends. may be coaxially connected to the input shaft 11 via a coupling at its end. Alternatively, the hydraulic motor rotating shaft 31 may be coaxially connected to an intermediate shaft (for example, the third intermediate shaft 13) other than the first intermediate shaft 12 via a coupling. As described above, in the gate opening/closing device S1 according to the first embodiment, the input of the rotational force (torque) from the hydraulic motor 29 to the speed reducer 8 is freely set according to the structure (for example, the number of stages) of the speed reducer 8. be able to.

FIG. 2 is a hydraulic circuit diagram of a hydraulic circuit C1 that supplies and discharges hydraulic oil to and from the hydraulic motor 29. As shown in FIG. For convenience, FIG. 2 shows a state in which the emergency hydraulic system R is connected to the hydraulic circuit C1, but the emergency hydraulic system R is not connected to the hydraulic circuit C1 in normal times. As shown in FIG. 2, one end of a first hydraulic fluid passage 35 that constitutes the hydraulic circuit C1 is connected to a first hydraulic fluid supply/discharge port 40 of the hydraulic motor 29, and the other end is connected to the hydraulic fluid reservoir 34. , and immersed in the hydraulic oil stored in the hydraulic oil storage tank 34 . One end of the second hydraulic fluid passage 36 is connected to the second hydraulic fluid supply/discharge port 41 of the hydraulic motor 29, and the other end is connected to the hydraulic fluid reservoir 34. It is immersed in the hydraulic oil that has been treated.

The hydraulic circuit C1 is provided with a first bypass passage 42 connecting the first hydraulic fluid passage 35 and the second hydraulic fluid passage 36. A relief valve 43 is interposed to adjust the pressure of the hydraulic oil in the oil passage 36 . Further, a second bypass passage 44 connecting the first hydraulic fluid passage 35 and the second hydraulic fluid passage 36 is provided closer to the hydraulic motor than the first bypass passage 42. A flow rate control valve 45 is interposed to adjust the flow rate of hydraulic oil in the oil passage 35 or in the second hydraulic oil passage 36 .

On the side of the hydraulic fluid storage tank from the first bypass passage 42, the first hydraulic fluid passage 35 is provided with a first multi-function valve 46, which is a series type multi-purpose stop valve, while the second hydraulic fluid passage 36 is provided with a series type multi-purpose stop valve. A second multifunction valve 47 is provided which is a multi-purpose stop valve. Here, the first and second multifunction valves 46 and 47 may be provided in the first and second hydraulic fluid passages 35 and 36 at positions different from those described above, for example, positions close to the hydraulic motor 29 . Note that the first multi-function valve 46 and the second multi-function valve 47 are used to connect the emergency hydraulic system R to the hydraulic circuit C1 when the electric motor 25 does not function due to a power failure or the like in the event of a disaster, for example. Its use is not limited to the connection of such an emergency hydraulic system R, but it can be used for various operations such as connecting a hydraulic gauge and checking for leaks of hydraulic oil.

The first multi-function valve 46 includes a manually operated on-off valve 46a, a first external connection port 46b, and a second external connection port 46c. The on-off valve 46a is interposed in the first hydraulic fluid passage 35 on the hydraulic fluid storage tank side of the first bypass passage 42, and can open and close the first hydraulic fluid passage 35 by manual operation. The first external connection port 46b communicates with the first hydraulic fluid passage 35 on the hydraulic fluid storage tank side of the on-off valve 46a, and the second external connection port 46c communicates with the first hydraulic fluid passage on the hydraulic motor side of the on-off valve 46a. 35. The second multifunction valve 47 has the same structure as the first multifunction valve 46, and includes an on-off valve 47a, a first external connection port 47b, and a second external connection port 47c. The external connection ports 46b, 46c, 47b, 47c of the first and second multifunction valves 46, 47 have the same structure.

The emergency hydraulic system R consists of a first oil passage 50 and a second oil passage 51, and a prime mover 52 (for example, a diesel engine) that operates independently without constant external supply of energy (for example, commercial power). It includes a driven hydraulic pump 53 and a manual oil passage switching valve 54 provided across (spanning) the first oil passage 50 and the second oil passage 51 . One end of the first oil passage 50 is provided with a connector 50a having a check valve that can be connected to the connector of the second external connection port 46c of the first multi-function valve 46. On the other hand, one end of the second oil passage 51 is provided with a connector 51a having a check valve that can be connected to the connector of the second external connection port 47c of the second multifunction valve 47. ing. Hydraulic oil supply/discharge ports 50b and 51b (openings) are provided at the other ends of the first and second oil passages 50 and 51, respectively (see FIG. 3). The connectors 50a and 51a of the first and second oil passages 50 and 51 can also be connected to the external connection ports 46b, 46c, 47b and 47c of the first and second multifunction valves 46 and 47. is possible.

The oil passage switching valve 54 switches the flow of hydraulic oil in the first and second oil passages 50, 51 in the forward or reverse direction. Specifically, the oil passage switching valve 54 is manually operated, and the high-pressure hydraulic oil discharged from the hydraulic pump 53 is directed to the first oil passage 50 (the portion opposite to the hydraulic pump 53 with respect to the oil passage switching valve 54). and a second state of supplying to the outside through the second oil passage 51 (the portion opposite to the hydraulic pump 53 with respect to the oil passage switching valve 54); It can be set to any of the third states in which no oil is supplied to the outside.

As shown in FIG. 3, the emergency hydraulic system R is portable and has a lightweight and compact structure arranged within a frame 56 to which wheels 55 for movement are attached. Therefore, if the emergency hydraulic system R is stored in an appropriate place, it can be quickly and easily moved and connected to the hydraulic circuit C1 in the event of a disaster such as an earthquake or an emergency, and the gate 2 can be used to operate the water gate 1 without any trouble. Can be opened and closed. Since this emergency hydraulic device R can be easily moved, it can be shared by a plurality of gate opening/closing devices.

The emergency hydraulic device R (patent pending: Japanese Patent Application No. 2013-092670) was jointly developed by the applicant of the present application (Japan Water Agency and Youtec Co., Ltd.), and is a hydraulic cylinder type gate valve. In the event of power loss (commercial power loss, standby generator failure), control panel (machine side operation panel) failure, or hydraulic unit failure, bring it to the site and expose the hydraulic unit as a backup power. The gate opening/closing device can be operated only by connecting it to the multi-function valve in the piping section.

As described above, since the emergency hydraulic device R can be shared by a plurality of gate opening/closing devices S1, it is not necessary to equip each gate opening/closing device S1. Therefore, it is very economical. In general, the standby power source for the gate operator should consider the social impact caused by the failure of the gate operator. Therefore, instead of permanently installing a standby power source for all equipment, facilities with a certain degree of tolerance should have a portable backup power source that can be shared by multiple equipment, considering the social impact of emergency operation in the event of a failure. Adopting the method of bringing in a power source is advantageous in terms of equipment costs and maintenance costs.

In general, the portable standby power source used in the wire rope winch type gate opening and closing device is mainly a shaft opening and closing machine, but the shaft opening and closing machine has the above-described problems. In contrast, the emergency hydraulic system R is a practical and inexpensive backup power source. In general, from the point of view of a facility manager, having a plurality of portable standby power units is disadvantageous in terms of maintenance and management, labor and cost. However, when the emergency hydraulic device R is used, the wire rope winch type gate opening and closing device S1 can be opened and closed by using the emergency hydraulic device already possessed by, for example, a hydraulic cylinder type gate opening and closing device.

An example of the operation procedure of the gate opening/closing device S1 according to Embodiment 1 of the present invention will be described below.
(1) When opening the water gate in normal times When opening the water gate 1 in normal times when the power supply functions normally, the control panel 27 is operated to supply power to the electric motor 25 to rotate it. At this time, the rotation of the electric motor rotating shaft is decelerated by the speed reducer 8 and transmitted to the wire drum 4 . As a result, the wire drum 4 rotates in a predetermined rotational direction, winds up the wire rope 3, and lifts the door 2. As shown in FIG. The water gate 1 is thereby opened. When the door 2 rises to a predetermined position, power supply to the electric motor 25 is stopped and the wire drum 4 is locked. As a result, the door 2 is fixed and held at that position.

At this time, the hydraulic motor rotating shaft 31 is rotationally driven by the first intermediate shaft 12 . As a result, the hydraulic motor 29 functions as a pump, and hydraulic oil circulates between the oil chamber in the hydraulic motor and the hydraulic oil reservoir 34 via the first and second hydraulic oil passages 35 and 36 . That is, the hydraulic oil is in an idling state, thereby preventing problems such as sticking and rusting due to lack of oil, thereby improving reliability during emergency operation. In this case, since the rotational speeds of the first intermediate shaft 12 and the hydraulic motor rotating shaft 31 are relatively low, the amount of hydraulic fluid circulated is relatively small, and the flow of hydraulic fluid does not significantly resist the rotation of the first intermediate shaft 12. . Electric motor 25 or speed reducer 8 is therefore hardly braked by hydraulic motor 29 .

(2) Closing the Water Gate Normally When closing the water gate 1 normally, the wire drum 4 is unlocked while the electric power to the electric motor 25 is stopped. As a result, the door body 2 descends due to gravity (self weight) at a higher speed than when it ascends, and accordingly the portion of the wire rope 3 not wound around the wire drum 4 moves downward. As a result, the wire rope 3 causes the wire drum 4 to rotate in the direction opposite to that for opening the water gate 1 . The rotation of the wire drum 4 or rotating shaft 5 is transmitted to the output shaft 9 of the speed reducer 8 , accelerated by the gear mechanism of the speed reducer 8 , and transmitted to the first intermediate shaft 12 and further to the input shaft 11 .

At this time, the hydraulic motor rotating shaft 31 is rotationally driven by the first intermediate shaft 12 . Note that the electric motor rotating shaft is also rotationally driven and idles. As a result, the hydraulic motor 29 functions as a pump, and hydraulic oil circulates between the oil chamber in the hydraulic motor 29 and the hydraulic oil reservoir 34 via the first and second hydraulic oil passages 35 and 36 . Thus, the gate body 2 descends at an appropriate speed and closes the floodgate 1 without hitting the bottom of the channel.

(3) When opening the water gate in an emergency When opening the water gate 1 in an emergency when the power supply, control panel 27 or motor 25 does not function normally due to a disaster such as an earthquake or typhoon, the first and second multifunction valves 46 and 47 After manually closing the on-off valves 46a and 47a, the connector 50a of the first oil passage 50 is connected to the second external connection port 46c of the first multi-function valve 46, and the connector of the second oil passage 51 is connected. 51 a is connected to the second external connection port 47 c of the second multifunction valve 47 . Then, the hydraulic oil supply/discharge ports 50b and 51b at the other ends of the first and second oil passages 50 and 51 are introduced (immersed) into the hydraulic oil in the hydraulic oil storage tank 34 . Note that the hydraulic oil supply/discharge ports 50b and 51b may be introduced (immersed) in hydraulic oil stored in a hydraulic oil container other than the hydraulic oil storage tank 34 .

Next, the prime mover 52 is started, and the driving force of the prime mover 52 drives the hydraulic pump 53 . After that, the oil passage switching valve 54 is set to the first state in which hydraulic oil is supplied to the outside through the first oil passage 50 . As a result, the hydraulic oil in the hydraulic oil storage tank 34 is moved by the hydraulic pump 53 to the first oil passage 50, the second external connection port 46c of the first multi-function valve 46, the first hydraulic oil passage 35, the first It is supplied to the oil chamber of the hydraulic motor 29 in a high pressure state via the hydraulic oil supply/discharge port 40 . As a result, the hydraulic motor rotating shaft 31 is rotated. Hydraulic oil whose pressure has been lowered by rotating the hydraulic motor rotary shaft 31 flows through the second hydraulic oil supply/discharge port 41, the second hydraulic oil passage 36, the second external connection port 47c of the second multi-function valve 47, It flows back into the hydraulic oil storage tank 34 via the second oil passage 51 .

Thus, the rotation of the hydraulic motor rotary shaft 31 is reduced by the reduction gear 8 and transmitted to the wire drum 4 . As a result, the wire drum 4 rotates in a predetermined rotational direction, winds up the wire rope 3, and lifts the door 2. As shown in FIG. The water gate 1 is thereby opened. When the door 2 rises to a predetermined position, the oil passage switching valve 54 is set to the third state in which hydraulic oil is not supplied to the outside, and the wire drum 4 is locked. As a result, the door 2 is fixed and held at that position.

(4) When closing the water gate in an emergency The operation for closing the water gate 1 in an emergency is substantially the same as the operation for closing the water gate 1 in normal times, and the gate body 2 descends at an appropriate speed, Close floodgate 1 without crashing into the bottom of the channel.

According to the gate opening/closing device S1 according to Embodiment 1 of the present invention, there is no need to provide a plurality of brakes and differential gears unlike the conventional gate opening/closing device of this type. In addition, the structure of the gravity descending water gate 1 can be made compact and simplified. In addition, even when a power source such as a power supply loses its function in the event of a disaster such as an earthquake or typhoon, the emergency hydraulic device R can raise and lower the gate body 2 to open and close the water gate 1, thereby preventing disasters caused by floods and tsunamis. can be prevented or mitigated.

(Modification of Embodiment 1)
Hereinafter, with reference to FIG. 4, a modification of Embodiment 1 in which the present invention (Embodiment 1) is applied to an existing wire rope winch type gate opening and closing device (for example, a sand discharge gate at the Medan Sekutou Kokubu in Fukuoka Prefecture). The gate opening/closing device S1' according to . As shown in FIG. 4, the gate opening/closing device S1' according to this modification is basically the same as the gate opening/closing device S1 shown in FIG. 1, but differs in the following points. First, unlike the gate opening/closing device S1 shown in FIG. It is connected to the input shaft 11 of the speed reducer 8 via a link mechanism 60 and a hydraulic push-up brake device 61 (Mew lifter brake). Also, the output shaft 9 of the speed reducer 8 is connected to the rotary shaft of the wire drum 4 via a reduction gear pair 62 (for example, a gear ratio of 5.5). The difference from the gate opening/closing device S1 shown in FIG. 1 is caused by applying the present invention to the existing wire rope winch type gate opening/closing device in the gate opening/closing device S1'.

Furthermore, in the gate opening/closing device S1' shown in FIG. While a first external connection mechanism 63 having a connection port is provided, the second hydraulic fluid passage 36 is provided with two on-off valves instead of the second multi-function valve and two on-off valves between the second hydraulic fluid passage 36 and the two on-off valves. A second external connection mechanism 64 is provided having a communicating external connection port. In the example shown in FIG. 4 , the emergency hydraulic system R can use hydraulic fluid in the existing hydraulic fluid tank 65 . Of course, the emergency hydraulic system R may use the hydraulic oil in the hydraulic oil storage tank 34 .

In this gate opening/closing device S1', the use of the emergency hydraulic device R is carried out in the following operating procedure.
(1) The emergency hydraulic system R is brought in and placed in the vicinity of the hydraulic motor 29 of the gate opening/closing system S1'.
(2) The hydraulic oil supply/discharge ports 50b and 51b at the ends of the first and second oil passages 50 and 51 are introduced (immersed) in the hydraulic oil in the existing hydraulic oil tank 65 or the hydraulic oil storage tank 34 .
(3) After closing the on-off valves on the hydraulic oil storage tank side of the first and second hydraulic oil passages 35 and 36 and opening the on-off valves on the hydraulic motor side, the connector 50a of the first oil passage 50 is closed. It connects to the external connection port of the first external connection mechanism 63 , and connects the connector 51 a of the second oil passage 51 to the external connection port of the second external connection mechanism 64 .
(4) Manually release the brake of the electric motor 25 and the hydraulic push-up brake device 61 .
(5) Start the prime mover 52 of the emergency hydraulic system R (see FIGS. 2 and 3).
(6) Operate the lever of the oil passage switching valve 54 of the emergency hydraulic system R to supply hydraulic oil from the hydraulic pump 53 to the hydraulic motor 29 to open and close the water gate 1 (see FIGS. 2 and 3).

In addition, in this gate opening and closing device S1' in which Embodiment 1 of the present invention is applied to the existing wire rope winch type gate opening and closing device, there is an operational failure "wire rope winch type gate opening and closing device." "Slack" and "Wire Rope Overload" must be taken care of. When the power supply and control panel (equipment side control panel) of the gate opening/closing device S1' are functioning normally, an alarm is issued by the detection device built into the wire rope terminal device. Since there is no such notification in the event of a failure, some operators are required. For example, a total of 4 operators, 1 operator to operate the emergency hydraulic system R, 1 operator to check the gate opening, and 2 operators to check the wire rope terminal device and the left and right banks of the gate body and wire rope. is preferred.

Thus, according to the gate opening/closing device S1', the water gate 1 can be reliably operated in the event of a power loss assumed in the event of a large-scale disaster, or failure of equipment such as a standby generator, a control panel (equipment-side operation panel), or a regular electric motor. It can be opened and closed, and the original function of the water gate 1 can be maintained. Thus, Embodiment 1 of the present invention can be easily applied to existing wire rope winch type gate opening and closing devices, and has been introduced into wire rope winch type gate opening and closing devices of many institutions and facilities. Since the hydraulic motor 29, which is a low-cost actuator with a simple structure, can be installed in the helical speed reducer for the existing gate, it can be deployed in many facilities.

(Embodiment 2)
A wire rope winch type gate opening/closing device S2 according to a second embodiment of the present invention will now be described with reference to FIGS. However, since the basic configuration of the gate opening/closing device S2 according to the second embodiment is common to the gate opening/closing device S1 according to the first embodiment shown in FIGS. The differences from the gate opening/closing device S1 according to the first embodiment shown in FIG. 2 will be described. 5 and 6, the constituent elements of the gate opening/closing device S2 shown in FIGS. 1 and 2 are denoted by the same reference numerals. It should be noted that the gate opening/closing device S2 according to the second embodiment can also be applied to a self-weight descending lock.

As shown in FIGS. 5 and 6, in the gate opening/closing device S2 according to the second embodiment, the hydraulic motor 29 is located on the rear side of the electric motor 25, that is, on the side opposite to the speed reducer 8 with respect to the direction in which the central axis of the electric motor rotation shaft 70 extends. 5(a), and the hydraulic motor rotating shaft 31 is not connected to the first intermediate shaft 12. As shown in FIG. The hydraulic motor rotating shaft 31 is coaxially connected to the electric motor rotating shaft 70 via the coupling 32 on the side opposite to the input shaft 11 with respect to the direction in which the central axis of the electric motor rotating shaft 70 extends. Therefore, the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 rotate integrally. Other configurations of the gate opening/closing device S2 are the same as those of the gate opening/closing device S1 shown in FIGS. The hydraulic circuit C2 of the gate opening/closing device S2 is substantially the same as the hydraulic circuit C1 of the gate opening/closing device S1 according to the first embodiment. Although FIG. 6 shows a state in which the emergency hydraulic system R is connected to the hydraulic circuit C2, the emergency hydraulic system R is not connected to the hydraulic circuit C2 in normal times.

The gate opening/closing device S2 according to the second embodiment has the advantage that only the electric motor 25 needs to be a special product. Specialty items may take a little longer to make and may cost a little more.

In the gate opening/closing device S<b>2 shown in FIG. 5 , the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 are coaxially connected via the coupling 32 . However, the power transmission mechanism between the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 is not limited to such a mechanism. Anything can be used as long as it can transmit power between them.

9(a) to (d) show some specific examples of the power transmission mechanism for dynamically engaging the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31. FIG. The power transmission mechanism shown in FIG. 9(a) is the same as that of the gate opening/closing device S2 shown in FIG. Concatenated. In the power transmission mechanism shown in FIG. 9(b), the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 are arranged parallel to each other and are dynamically engaged with each other by a sprocket mechanism 72 (or gear mechanism). In the power transmission mechanism shown in FIG. 9(c), the electric motor rotating shaft 70 of the electric motor 25 is connected to the input shaft 11 of the reduction gear 8 via a bent link mechanism 73, while the electric motor rotating shaft 70 and the hydraulic motor rotating shaft are connected to each other. 31 are arranged parallel to each other and are mechanically engaged with each other by a sprocket mechanism 74 (or gear mechanism). In the power transmission mechanism shown in FIGS. 9A to 9C, the hydraulic motor rotating shaft 31 is connected to the electric motor rotating shaft 70 on the side opposite to the side where the electric motor rotating shaft 70 is mechanically engaged with the input shaft 11. mechanically engaged.

In the power transmission mechanism shown in FIG. 9(d), the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 are arranged parallel to each other, and both are dynamically engaged with the input shaft 11 by the gear mechanism 75, respectively. In the power transmission mechanism shown in FIG. 9D , the hydraulic motor rotating shaft 31 is engaged with the electric motor rotating shaft 70 on the side where the electric motor rotating shaft 70 is dynamically engaged with the input shaft 11 .

When the hydraulic motor rotating shaft 31 dynamically engages with the electric motor rotating shaft 70 on the side where the electric motor rotating shaft 70 dynamically engages with the input shaft 11, for example, FIGS. As shown, between the input shaft 11, the electric motor rotating shaft 70, and the hydraulic motor rotating shaft 31, power switching devices 76a and 76b for differentially rotating the electric motor rotating shaft 70 and the hydraulic motor rotating shaft 31 may be arranged. .

In the power transmission mechanism shown in FIGS. 10(a) and 10(b), the power switching device 76a includes a differential gear mechanism 77, a sprocket type power transmission mechanism 78, and a gear type power transmission mechanism 79. Here, when the electric motor 25 or the electric motor rotating shaft 70 is fixed or locked, power is transmitted between the hydraulic motor rotating shaft 31 and the input shaft 11 . Conversely, when the hydraulic motor 29 or hydraulic motor rotating shaft 31 is fixed or locked, power is transmitted between the electric motor rotating shaft 70 and the input shaft 11 .

10(c)-(d), the power switching device 76b includes a planetary gear mechanism 80. In the power transmission mechanism shown in FIGS. Here, when the electric motor 25 or the electric motor rotating shaft 70 is fixed or locked, power is transmitted between the hydraulic motor rotating shaft 31 and the input shaft 11 . Conversely, when the hydraulic motor 29 or hydraulic motor rotating shaft 31 is fixed or locked, power is transmitted between the electric motor rotating shaft 70 and the input shaft 11 . The power switching devices 76a and 76b shown in FIGS. 10(a) and 10(b) are merely examples, and it goes without saying that other power switching devices having different structures may be used.

An example of the operation procedure of the gate opening/closing device S2 according to the second embodiment shown in FIGS. 5 and 6 will be described below.
(1) When opening the water gate normally When opening the water gate 1 normally, basically the same operation as in the case of the gate opening/closing device S1 according to Embodiment 1 is performed to raise the gate body 2, and the water gate 1 is opened. be opened. However, the hydraulic motor rotating shaft 31 is rotationally driven by the electric motor rotating shaft 70 . As a result, the hydraulic motor 29 functions as a pump, and hydraulic oil circulates between the oil chamber in the hydraulic motor 29 and the hydraulic oil reservoir 34 via the first and second hydraulic oil passages 35 and 36 . In this case, since the rotational speed of the hydraulic motor rotating shaft 31 is relatively low, the flow rate of the hydraulic oil is relatively small, and the hydraulic oil flow does not significantly resist the rotation of the input shaft 11 (electric motor rotating shaft 70).

(2) When the water gate is closed normally When the water gate 1 is normally closed, basically the same operation as in the case of the gate opening/closing device S1 according to Embodiment 1 is performed to lower the gate body 2, and the water gate 1 is closed. Closed. However, the hydraulic motor rotating shaft 31 is rotationally driven via the electric motor rotating shaft 70 . As a result, the hydraulic motor 29 functions as a pump, and hydraulic oil circulates between the oil chamber in the hydraulic motor and the hydraulic oil reservoir 34 via the first and second hydraulic oil passages 35 and 36 . Thus, the gate body 2 descends at an appropriate speed and closes the floodgate 1 without hitting the bottom of the channel.

(3) When opening or closing the water gate in an emergency When opening the water gate 1 in an emergency, basically the same operation as in the case of the gate opening/closing device S1 according to Embodiment 1 is performed to raise the gate body 2 and open the water gate. 1 is opened. The operation for closing the water gate 1 in an emergency is the same as the operation for closing the water gate 1 in normal times. Close 1.

Thus, according to the gate opening/closing device S2 according to the second embodiment of the present invention, as in the case of the gate opening/closing device S1 according to the first embodiment, it does not require a plurality of brakes or a differential gear mechanism. The structure of the device S2 or of the gravity-lowering water gate 1 provided with it can be made compact and simplified. In addition, even when a power source such as a power supply loses its function in the event of a disaster such as an earthquake or typhoon, the emergency hydraulic device R can raise and lower the gate body 2 to open and close the water gate 1, thereby preventing disasters caused by floods and tsunamis. can be prevented or mitigated.

(Embodiment 3)
A wire rope winch type gate opening/closing device S3 according to Embodiment 3 of the present invention will be described below with reference to FIGS. 7 and 8. FIG. However, since the basic configuration of the gate opening/closing device S3 according to the third embodiment is common to the gate opening/closing device S1 according to the first embodiment shown in FIGS. The differences from the gate opening/closing device S1 according to the first embodiment shown in FIG. 2 will be described. In the components of the gate opening/closing device S3 shown in FIGS. 7 and 8, the same reference numerals are given to the components common to the components of the gate opening/closing device S1 shown in FIGS. 1 and 2. FIG. It should be noted that the gate opening/closing device S3 according to the third embodiment can also be applied to a self-weight descending lock.

As shown in FIG. 7, the gate opening/closing device S3 according to Embodiment 3 is not provided with an electric motor for driving the input shaft 11 of the speed reducer 8, and the input shaft 11 of the speed reducer 8 is operated by the hydraulic oil supply device C3. It is rotationally driven by a hydraulic motor 29 to which oil is supplied and discharged. Although not shown in detail, the hydraulic motor rotating shaft 31 is coaxially connected to the input shaft 11 via a coupling (not shown). Incidentally, the power transmission mechanism between the input shaft 11 and the hydraulic motor rotating shaft 31 is not limited to such a mechanism. Anything can be used as long as it can transmit power.

The hydraulic oil supply device C3 of the gate opening/closing device S3 is basically for operating the hydraulic motor 29 at normal times, so its configuration is quite different from that of the hydraulic circuit C1 of the gate opening/closing device S1 according to the first embodiment. . However, the emergency hydraulic device R is the same as the gate opening/closing device S1 according to the first embodiment. Hereinafter, the configuration and function of the hydraulic oil supply device C3 of the gate opening/closing device S3 will be specifically described.

As shown in FIG. 8, the hydraulic oil supply device C3 includes first and second hydraulic oil passages each having one end connected to first and second hydraulic oil supply/discharge ports 40 and 41 of the hydraulic motor 29. 81, 82, an oil passage switching valve 83 connected to the other end of the first and second hydraulic oil passages 81, 82, and a third, oil passage switching valve 83 having one end connected to the oil passage switching valve 83, respectively. Fourth hydraulic fluid passages 84 and 85, a hydraulic fluid tank 86 that stores hydraulic fluid, and a hydraulic pump 88 that is driven by a motor 87 are provided. Although FIG. 8 shows a state in which the emergency hydraulic device R is connected to the hydraulic oil supply device C3, the emergency hydraulic device R is not connected to the hydraulic oil supply device C3 in normal times.

Here, the hydraulic pump 88 is interposed in the third hydraulic oil passage 84, sucks the hydraulic oil in the hydraulic oil tank 86, pressurizes and discharges the hydraulic oil, and switches the oil passage through the third hydraulic oil passage 84. It feeds valve 83 . A bypass hydraulic fluid passage 89 is provided to connect the fourth hydraulic fluid passage 85 with the third hydraulic fluid passage 84 on the fluid passage switching valve side of the hydraulic pump 88 (a portion downstream of the hydraulic pump 88). A relief valve 90 that adjusts the hydraulic pressure in the third hydraulic fluid passage 84 is interposed in the bypass hydraulic fluid passage 89 . Between the first hydraulic fluid passage 81 and the second hydraulic fluid passage 82 is provided a hydraulic pressure adjusting device 91 that adjusts the hydraulic pressure in the first hydraulic fluid passage 81 and has a relief valve and a plurality of check valves. It is

Furthermore, manual first and second on-off valves 92 and 93 are interposed in the first hydraulic fluid passage 81 in the vicinity of the hydraulic motor 29, and between the first on-off valve 92 and the second on-off valve 93, the first A first external connection port 94 that communicates with the hydraulic fluid passage 81 is provided. Further, manual third and fourth on-off valves 95 and 96 are interposed in the second hydraulic fluid passage 82 in the vicinity of the hydraulic motor 29, and between the third and fourth on-off valves 95 and 96, the second A second external connection port 97 is provided that communicates with the hydraulic fluid passage 82 .

The oil path switching valve 83 switches the supply/discharge path of hydraulic oil to/from the hydraulic motor 29 . Although not shown in detail, the oil passage switching valve 83 is a solenoid valve controlled by the control panel 27 (see FIG. 7), and directs the hydraulic oil discharged from the hydraulic pump 88 through the first hydraulic oil passage 81. A first state in which hydraulic fluid is supplied to the first hydraulic fluid supply/discharge port 40 of the hydraulic motor 29 via the second hydraulic fluid passage 82 and a second state in which hydraulic fluid is supplied to the second hydraulic fluid supply/discharge port 41 of the hydraulic motor 29 via the second hydraulic fluid passage 82 . , the hydraulic motor 29 can be set to any of the third states in which hydraulic oil is not supplied.

Thus, in the hydraulic motor 29 , hydraulic fluid is supplied to the first hydraulic fluid supply/discharge port 40 via the first hydraulic fluid passage 81 , while hydraulic fluid in the oil chamber motor is supplied to the second hydraulic fluid supply/discharge port 41 . 7) is rotated in a predetermined direction (the direction in which the door body 2 is lifted). At this time, the input shaft 11 of the speed reducer 8 is rotationally driven by the hydraulic motor 29, and the door 2 is lifted as will be described later. Hydraulic oil is supplied to the second hydraulic oil supply/discharge port 41 through the second hydraulic oil passage 82, while the hydraulic oil in the oil chamber motor flows from the first hydraulic oil supply/discharge port 40 to the first hydraulic oil passage. When discharged via 81, the hydraulic motor shaft (not shown) is rotated in a direction opposite to the predetermined direction.

An example of the operation procedure of the gate opening/closing device S3 according to Embodiment 3 of the present invention will be described below.
(1) When opening the water gate in normal times When opening the water gate 1 in normal times when the hydraulic oil supply device C3 functions normally, the control panel 27 is operated to supply power to the motor 87, which rotates the hydraulic pump. 88 is activated. Then, the oil passage switching valve 83 is set to the first state, and hydraulic oil is supplied to the first hydraulic oil supply/discharge port 40 of the hydraulic motor 29 via the first hydraulic oil passage 81 . As a result, the hydraulic motor rotary shaft (not shown) rotates in the predetermined direction, and the input shaft 11 of the speed reducer 8 rotates in the direction in which the door 2 is lifted. The rotation of the input shaft 11 is decelerated by the decelerator 8 and transmitted to the wire drum 4 . As a result, the wire drum 4 rotates in a predetermined rotational direction, winds up the wire rope 3, and lifts the door 2. As shown in FIG. The water gate 1 is thereby opened. When the door 2 rises to a predetermined position, the hydraulic motor 29 is stopped and the wire drum 4 is locked. As a result, the door 2 is fixed and held at that position.

(2) Closing the water gate in normal times When closing the water gate 1 in normal times, the oil passage switching valve 83 is set to the third state, and the end of the first hydraulic oil passage 81 on the oil passage switching valve side and the second The end portion of the hydraulic fluid passage 82 on the side of the oil passage switching valve is communicated via the oil passage switching valve 83 . After that, the wire drum 4 is unlocked. As a result, the door 2 descends at a relatively high speed due to gravity (self-weight), and accordingly the portion of the wire rope 3 not wound around the wire drum 4 moves downward. As a result, the wire rope 3 causes the wire drum 4 to rotate in the direction opposite to that for opening the water gate 1 . The rotation of the wire drum 4 or rotating shaft 5 is transmitted to the output shaft 9 of the speed reducer 8 , accelerated by the gear mechanism of the speed reducer 8 , and transmitted to the input shaft 11 .

At this time, the hydraulic motor rotating shaft 31 (see FIG. 7) is rotationally driven by the input shaft 11 . As a result, the hydraulic motor 29 functions as a pump, and hydraulic oil circulates between the oil chamber in the hydraulic motor 29 and the oil passage switching valve 83 via the first and second hydraulic oil passages 81 and 82 . Thus, the gate body 2 descends at an appropriate speed and closes the floodgate 1 without hitting the bottom of the channel.

(3) When opening the water gate in an emergency When opening the water gate 1 in an emergency when the hydraulic oil supply device C3 does not function normally due to a disaster such as an earthquake or typhoon, manually close the second and fourth on-off valves 93 and 96. , the first and third on-off valves 92 and 95 are kept open. Then, the connector 50 a of the first oil passage 50 is connected to the first external connection port 94 and the connector 51 a of the second oil passage 51 is connected to the second external connection port 97 . After that, the hydraulic oil supply/discharge ports 50 b and 51 b at the other ends of the first and second oil passages 50 and 51 are introduced (immersed) into the hydraulic oil in the hydraulic oil tank 86 .

Next, the prime mover 52 is started, and the driving force of the prime mover 52 drives the hydraulic pump 53 . After that, the oil passage switching valve 54 is set to the first state in which hydraulic oil is supplied to the outside through the first oil passage 50 . As a result, the hydraulic oil in the hydraulic oil tank 86 is pumped by the hydraulic pump 53 through the first oil passage 50 , the first external connection port 94 , the first hydraulic oil passage 81 , and the first hydraulic oil supply/discharge port 40 . is supplied to the oil chamber of the hydraulic motor 29 in a high pressure state. As a result, the hydraulic motor rotating shaft (not shown) is rotated. Hydraulic oil whose pressure has been lowered by rotating the hydraulic motor rotating shaft (not shown) flows through the second hydraulic fluid supply/discharge port 41, the second hydraulic fluid passage 82, the second external connection port 97, the second hydraulic fluid 51 to flow back into the hydraulic oil tank 86 .

Thus, the rotation of the hydraulic motor rotary shaft 31 (see FIG. 7) is decelerated by the speed reducer 8 and transmitted to the wire drum 4 . As a result, the wire drum 4 rotates in a predetermined rotational direction, winds up the wire rope 3, and lifts the door 2. As shown in FIG. The water gate 1 is thereby opened. When the door 2 rises to a predetermined position, the oil passage switching valve 54 is set to the third state in which hydraulic oil is not supplied to the outside, and the wire drum 4 is locked. As a result, the door 2 is fixed and held at that position.

(4) Closing the water gate in an emergency The operation for closing the water gate 1 in an emergency is the same as the operation for closing the water gate 1 in normal times. Close floodgate 1 without colliding with

According to the gate opening and closing device S3 according to the third embodiment of the present invention, unlike the conventional gate opening and closing device of this type, it does not require a plurality of brakes and differential gears. The structure of the gravity-fed water gate 1 can be made compact and simplified. In addition, even when a power source such as a power supply loses its function in the event of a disaster such as an earthquake or typhoon, the emergency hydraulic device R can raise and lower the gate body 2 to open and close the water gate 1, thereby preventing disasters caused by floods and tsunamis. can be prevented or mitigated.

S1 to S3 gate opening and closing device, S1' gate opening and closing device, C1 to C3 hydraulic circuit, R emergency hydraulic device, 1 water gate, 2 door body, 3 wire rope, 4 wire drum, 5 rotating shaft, 6 drum support part, 7 connection tool, 8 reducer, 9 output shaft, 10 housing, 11 input shaft, 12 first intermediate shaft, 13 second intermediate shaft, 14 third intermediate shaft, 15 first gear, 16 second gear, 17 third gear, 18 4th gear 19 5th gear 20 6th gear 21 7th gear 22 8th gear 25 electric motor 26 wire 27 control panel 29 hydraulic motor 31 hydraulic motor rotary shaft 32 coupling 34 Hydraulic oil reservoir, 35 first hydraulic oil passage, 36 second hydraulic oil passage, 40 first hydraulic oil supply/discharge port, 41 second hydraulic oil supply/discharge port, 42 first bypass passage, 43 relief valve, 44 second bypass Passage 45 Flow control valve 46 First multifunction valve 47 Second multifunction valve 50 First oil passage 51 Second oil passage 52 Motor 53 Hydraulic pump 54 Hydraulic oil switching valve 55 Wheel 56 Frame 60 Link Mechanism 61 Hydraulic Lifting Brake Device 62 Reduction Gear Pair 63 First External Connection Mechanism 64 Second External Connection Mechanism 65 Hydraulic Oil Tank 70 Electric Motor Rotating Shaft 72 Sprocket Mechanism 73 Link Mechanism 74 Sprocket Mechanism 75 Gear Mechanism 76a Power Switching Device 76b Power Switching Device 77 Differential Gear Mechanism 78 Sprocket Type Power Transmission Mechanism 79 Gear Type Power Transmission Mechanism 80 Planetary Gear Mechanism 81 First Hydraulic Oil Passage 82 Second hydraulic fluid passage 83 Oil passage switching valve 84 Third hydraulic passage 85 Fourth hydraulic oil passage 86 Hydraulic oil tank 87 Motor 88 Hydraulic pump 89 Bypass hydraulic oil passage 91 Hydraulic regulator 92 1st on-off valve, 93 2nd on-off valve, 94 1st external connection port, 95 3rd on-off valve, 96 4th on-off valve, 97 2nd external connection port.

Claims (2)

A wire rope winch type gate opening and closing device that raises a gate body that opens and closes a water gate or a landlock by lifting operation and lowers the gate body by its own weight,
a wire rope for suspending the door;
a rotatable wire drum around which the wire rope is wound;
an output shaft that is mechanically engaged with the rotating shaft of the wire drum via a gear pair, or is coaxially connected to the rotating shaft to rotationally drive the rotating shaft or is rotationally driven by the rotating shaft; a reducer having an input shaft and a gear mechanism that reduces the rotation of the input shaft and transmits it to the output shaft, or speeds up the rotation of the output shaft and transmits it to the input shaft;
A hydraulic motor with a hydraulic motor shaft that is mechanically engaged with the input shaft through a gear pair or is coaxially connected to the input shaft to rotationally drive the input shaft or is rotationally driven by the input shaft a motor;
a hydraulic oil supply/discharge device that supplies/discharges hydraulic oil to/from the hydraulic motor via a hydraulic oil supply/discharge passage connected to the hydraulic motor ;
The hydraulic motor rotating shaft is the only member other than the gear mechanism that is mechanically engaged with the input shaft through a gear pair or is coaxially connected to the input shaft to rotationally drive the input shaft. A gate opening and closing device characterized by: The hydraulic fluid supply/discharge passages are a first hydraulic fluid passage connected to one hydraulic fluid supply/discharge port of the hydraulic motor and a second hydraulic fluid passage connected to the other hydraulic fluid supply/discharge port of the hydraulic motor. and
A first on-off valve that opens and closes the first hydraulic fluid passage, and a first external connection port that communicates with the first hydraulic fluid passage on the hydraulic motor side of the first on-off valve are interposed in the first hydraulic fluid passage. is set up,
A second on-off valve that opens and closes the second hydraulic fluid passage, and a second external connection port that communicates with the second hydraulic fluid passage on the hydraulic motor side of the second on-off valve are interposed in the second hydraulic fluid passage. 2. The gate opening/closing device according to claim 1, wherein the gate opening/closing device is provided .

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