JP7076723B2 - Wire rope winch type gate switchgear - Google Patents

Description

The present invention relates to a wire rope winch type gate opening / closing device that raises and lowers a door body that opens and closes a floodgate or a coupure by power while lowering the door body by its own weight.

Generally, in a waterway such as a river, the waterway is closed appropriately to store water, raise the water level to flow water into a branch waterway, etc., and adjust the flow rate of water in the waterway. A water gate is provided to close or open the waterway. In addition, a coupure (flood wall gate) that is normally opened for passage and closed in the event of a tsunami or flood is provided at breaks such as seawalls and river embankments. As such a floodgate or coupure, a self-weight descent type gate opening / closing in which the door body is raised by power to open a waterway or a break, while the door is lowered by its own weight to close the waterway or the break. The device is widely used. Such a self-weight descent type gate opening / closing device can lower the door body by its own weight and close the floodgate or the coupure even when the power source loses its function in the event of a disaster such as an earthquake or a typhoon. It is advantageous to prevent or reduce the damage caused by the tsunami.

The self-weight lowering type gate opening / closing device generally has a wire rope that suspends the door body and a rotatable wire drum that winds the wire rope, and is equipped with a motor, a speed reducer, and the like. The wire drum is rotated and the wire rope is wound to lift the door body and open the gate (wire rope winch type). Further, when closing the gate, the mechanical engagement between the 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). See ~ 3).

Japanese Unexamined Patent Publication No. 2013-50019 Japanese Unexamined Patent Publication No. 2014-47471 JP-A-2015-71922

However, for example, in the conventional wire rope winch type gate opening / closing device disclosed in Patent Documents 1 to 3, the drum drive mechanism is very provided with an electric motor, a plurality of brake devices, a differential gear mechanism, a reduction gear, and the like. Since it is a large scale and its structure is complicated, there is a problem that its construction cost and operating cost are high. As will be described later, when a spare motor or a spare engine is installed in addition to the regular motor, the structure becomes more complicated and the construction cost and the operating cost become higher.

In addition, in the conventional wire rope winch type gate, the motor and control panel usually operate with the power supplied from the commercial power supply, so when the commercial power supply does not function in the event of a disaster such as an earthquake or typhoon (power loss). ), Or when the motor or control panel is damaged or destroyed (hereinafter, such a situation is referred to as "emergency"), there is a problem that it is difficult to open and close the gate. Therefore, in the wire rope winch type gate opening / closing device, it is desirable to provide equipment that enables opening / closing of the gate in an emergency.

For example, according to the "Technical Standards for Dam / Dam Facilities (Draft)" and "Gate Opening / Closing Device (Mechanical) Design Guidelines (Draft)" pertaining to the Ministry of Land, Infrastructure, Transport and Tourism, water gate equipment (gates) are "preliminary power for opening and closing." As "equipment", the guideline is that it is desirable to install a backup 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, fault tolerant, that is, the main power of the gate switchgear, is a means to maintain the function by switching to a spare system even if a part of the component fails or stops, and to keep it operating normally. In addition, it is recommended to provide an appropriate reserve power source according to the importance of the equipment and to duplicate the power source to ensure the minimum opening / closing function even in the event of a failure.

Generally, a wire rope winch type gate opening / closing device is provided with a manual handle, but it is extremely difficult to quickly open / close the gate with the manual handle in an emergency. In addition, as a backup power source for existing motors, it is possible to connect a "portable shaft switch" to the switching device, but with a commonly used portable shaft switch, the gate opening / closing speed is about 0. It is very slow at 01 m / min, and it is necessary to appropriately stop and cool the operation due to abnormal heat generation of the flexible shaft, which causes a problem that it is not practical as a backup power source. Even if an opening / closing mechanism is used instead of the portable shaft switch, the internal gear of the switching device was developed on the premise of manual operation. Therefore, from the viewpoint of the strength of the internal gear, the gate opening / closing speed can be increased. Have difficulty. Therefore, a more practical reserve power source is required.

Therefore, it is conceivable to install a standby generator as a backup for the commercial power source. However, such a measure has a problem that the equipment cost is very high and it is useless when the motor or the control panel is damaged or destroyed.

Further, as a general backup power system for a wire rope winch type gate switchgear, a method of permanently installing a spare power source such as installing a spare motor or a spare engine can be considered. Permanent installation of such a reserve power source is excellent in speed as a backup for equipment with a very high degree of social impact in the event of a failure, but both require a large amount of capital investment and maintenance costs. Also, there is a problem that a considerably large installation space is required. The method of installing a spare motor has the advantage that switching operation is not required and the operation method is as easy as that of a regular motor, but there is a problem that it is useless when the control panel is damaged or destroyed. be. Further, although the method of installing a spare engine has an advantage that it can be operated even when a power supply is lost or a control panel fails, there is a problem that a regular test run is required because a start failure is likely to occur.

The present invention has been made to solve the above-mentioned conventional problems, has a simple and compact structure that enables quick opening and closing of a gate in an emergency, and has a low cost for installation and maintenance. The problem to be solved is to provide a wire rope winch type gate opening / closing device.

The wire rope winch type gate opening / closing device according to the first aspect of the present invention, which has been made to solve the above problems, powers the door body for opening / closing the water gate or the coupure by raising and lowering the door body. Is configured to descend by its own weight (gravity). The gate opening / closing device includes a wire rope, a rotatable wire drum, a speed reducer, an electric motor, a hydraulic motor, a hydraulic circuit, and an emergency hydraulic device.

Here, the wire rope suspends (hangs) the door body. The wire drum winds (wraps) the wire rope. The speed reducer has an output shaft, an input shaft, and an output shaft that is mechanically engaged (or connected) with the rotary shaft of the wire drum and is rotationally driven by the rotary shaft or is rotationally driven (reverse rotary drive) by the rotary shaft. It has a gear mechanism (meshing gear mechanism) that slows down 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 motor has a motor rotary shaft that is mechanically engaged (or coupled) with the input shaft and is rotationally driven or rotationally driven by the input shaft. The hydraulic motor mechanically engages with the input shaft or the gear rotation shaft (intermediate shaft) of the gear mechanism other than the input shaft and the output shaft to rotationally drive or input the input shaft or the gear rotation shaft (intermediate shaft). It has a hydraulic motor rotation shaft that is rotationally driven (reverse rotation drive) by a shaft or a gear rotation shaft (intermediate shaft). The hydraulic circuit circulates hydraulic oil between the hydraulic motor and the hydraulic oil storage tank. 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.

The wire rope winch type gate opening / closing device according to the second aspect of the present invention includes a wire rope, a rotatable wire drum, a speed reducer, an electric motor, a hydraulic motor, a hydraulic circuit, and an emergency hydraulic device. I have. In this gate opening / closing device, the hydraulic motor dynamically engages (or is connected to) the motor rotary shaft and rotationally drives or drives the input shaft via the motor rotary shaft or without the motor rotary shaft. It has a hydraulic motor rotation shaft that is rotationally driven (reverse rotation drive) 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 / closing device according to the second aspect of the present invention, the hydraulic motor rotation shaft is mechanically different from the motor rotation shaft on the side opposite to the side where the motor rotation shaft mechanically engages with the input shaft. It may be one that engages. Further, the hydraulic motor rotary shaft may be one that engages with the motor rotary shaft on the side where the motor rotary shaft mechanically engages with the input shaft. In this case, the input shaft, the motor rotary shaft, and the hydraulic motor rotation A power switching device that differentials the motor rotating shaft and the hydraulic motor rotating shaft may be provided between the shaft.

In the gate opening / closing device according to the first and second aspects of the present invention, the hydraulic circuit has 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 of the hydraulic motors. It is preferable to have a second hydraulic oil passage connecting the hydraulic oil supply / discharge port and the hydraulic oil storage tank. In this case, in the first hydraulic oil passage, a first on-off valve for opening and closing the first hydraulic oil passage and a first external connection port communicating with the first hydraulic oil passage on the hydraulic motor side from the first on-off valve are provided. On the other hand, the second on-off valve that opens and closes the second hydraulic oil passage and the second external connection that communicates with the second hydraulic oil passage on the hydraulic motor side from the second on-off valve are connected to the second hydraulic oil passage. It is preferable that the port is interposed. Further, the emergency hydraulic device is equipped with a port connector capable of connecting to a first external connection port (and / or a second external connection port) at one end, and a hydraulic oil container (and / or a second external connection port) at the other end. For example, it is connected to a first oil passage provided with a hydraulic oil supply / discharge port that can be introduced into a hydraulic oil storage tank) and a second external connection port (and / or a first external connection port) at one end. A second oil passage, to which a capable port connector is attached and at the other end is provided with a hydraulic oil supply / discharge port that can be introduced into a hydraulic oil container (for example, a hydraulic oil storage tank), and a second oil passage. A hydraulic pump that is installed in the 1st oil passage or the 2nd oil passage and is driven by a power source that operates independently, and is connected (across) the 1st oil passage and the 2nd oil passage on the port connector side from the hydraulic pump. It is preferable that the oil passage switching device (for example, an oil passage switching valve) for switching the hydraulic oil supply / discharge route in the first oil passage and the second oil passage is provided.

The wire rope winch type gate opening / closing device according to the third aspect of the present invention includes a wire rope, a wire drum, a speed reducer, a hydraulic motor, a hydraulic oil supply / discharge device, and an emergency hydraulic device. .. In this gate opening / closing device, the hydraulic motor is mechanically engaged with the input shaft via a gear pair , or is coaxially connected to the input shaft to drive the input shaft to rotate or to drive the input shaft to rotate. It has a hydraulic motor rotation shaft (reverse rotation drive). The hydraulic oil supply / discharge device supplies / discharges hydraulic oil to the hydraulic motor via two hydraulic oil supply / discharge passages connected to the hydraulic motor. The emergency hydraulic device can be arbitrarily (or appropriately) connected to the hydraulic oil supply / discharge passage to supply / discharge hydraulic oil to 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 oil supply / discharge passage is the first hydraulic oil passage connected to one hydraulic oil supply / discharge port of the hydraulic motor and the other hydraulic oil supply of the hydraulic motor. It is preferable to have a second hydraulic oil passage connected to the exhaust port. In this case, in the first hydraulic oil passage, a first on-off valve for opening and closing the first hydraulic oil passage and a first external connection port communicating with the first hydraulic oil passage on the hydraulic motor side from the first on-off valve are provided. On the other hand, the second on-off valve that opens and closes the second hydraulic oil passage and the second external connection that communicates with the second hydraulic oil passage on the hydraulic motor side from the second on-off valve are connected to the second hydraulic oil passage. It is preferable that the port is interposed. Further, the emergency hydraulic device is equipped with a port connector capable of connecting to a first external connection port (and / or a second external connection port) at one end, and a hydraulic oil container (and / or a second external connection port) at the other end. For example, it is connected to a first oil passage provided with a hydraulic oil supply / discharge port that can be introduced into a hydraulic oil storage tank) and a second external connection port (and / or a first external connection port) at one end. A second oil passage, to which a capable port connector is attached and at the other end is provided with a hydraulic oil supply / discharge port that can be introduced into a hydraulic oil container (for example, a hydraulic oil storage tank), and a second oil passage. A hydraulic pump that is installed in the 1st oil passage or the 2nd oil passage and is driven by a power source (for example, a diesel engine) that operates independently, and the 1st oil passage and the 2nd oil passage on the port connector side of the hydraulic pump. It is preferable to have an oil passage switching device which is interposed (straddling) and switches the hydraulic oil supply / discharge route 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, and is a large-scale spare motor or spare as in the conventional case. Since it is not necessary to install an engine, the structure of the gate opening / closing device or a self-weight lowering gate equipped with the gate opening / closing device can be made compact and simplified. In addition, even when a power source such as a commercial power source loses its function in the event of a disaster such as an earthquake or typhoon, the emergency hydraulic system can raise and lower the door to open and close the gate (sluice gate or coupure), resulting in a flood. It is possible to prevent or mitigate disasters caused by tsunamis and tsunamis. In this case, the emergency hydraulic system is extremely advantageous as a reserve power source because it is very simple, compact, and low in cost as compared with other reserve power sources.

FIG. 1A is a schematic partial cross-sectional side view of the wire rope winch type gate opening / closing device according to the first embodiment of the present invention, and FIG. 1B is a gate opening / closing device shown in FIG. 1A. It is an enlarged partial cross-sectional side view of the speed reducer constituting. FIG. 2 is a hydraulic circuit diagram showing a configuration of a hydraulic oil supply device of the gate opening / closing device shown in FIG. 1 (a). FIG. 3 is a schematic side view of the 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 modified example of the first embodiment of the present invention. FIG. 5A is a schematic partial cross-sectional side view of the wire rope winch type gate opening / closing device according to the second embodiment of the present invention, and FIG. 5B is a gate opening / closing device shown in FIG. 5A. It is an enlarged partial cross-sectional side view of the speed reducer constituting. FIG. 6 is a hydraulic circuit diagram showing a configuration of a hydraulic oil supply device of the gate opening / closing device shown in FIG. 5 (a). FIG. 7A is a schematic partial cross-sectional side view of the wire rope winch type gate opening / closing device according to the third embodiment of the present invention, and FIG. 7B is a gate opening / closing device shown in FIG. 7A. It is an enlarged partial cross-sectional side view of the speed reducer constituting. 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. 7A. 9 (a) to 9 (d) are schematic views showing some specific examples of the engagement mode between the electric motor and the hydraulic motor in the gate opening / closing device according to the second embodiment of the present invention. 10 (a) to 10 (d) show the present invention in which a power switching device for differentially separating the motor rotary shaft and the hydraulic motor rotary shaft is arranged between the input shaft, the motor rotary shaft, and the hydraulic motor rotary shaft. It is a schematic diagram which shows the specific example of the gate opening / closing device which concerns on Embodiment 2.

Hereinafter, some embodiments of the present invention will be specifically described with reference to the accompanying drawings.
(Embodiment 1)
Hereinafter, the wire rope winch type gate opening / closing device S1 used for the self-weight lowering type water gate according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. The gate opening / closing device S1 according to the first embodiment can also be applied to a self-weight descent type coupure.
As shown in FIGS. 1 (a) and 1 (b), the water gate 1 installed in a waterway (not shown) such as a river or an agricultural waterway powers the door body 2 that opens and closes the water gate by raising and lowering. On the other hand, the door body 2 is lowered by its own weight. That is, the floodgate 1 is opened and closed by the raising and lowering operation of the door body 2. The door body 2 is suspended by a wire rope 3, and the wire rope 3 is wound around a wire drum 4. The wire drum 4 is coaxially attached to the rotating shaft 5 located at the center thereof, and rotates integrally with the rotating shaft 5. The rotary shaft 5 is rotatably supported by the rotary shaft support portion 6.

When the rotary shaft 5 and the wire drum 4 are rotationally driven by the electric motor 25 or the hydraulic motor 29 described later and rotate in a predetermined rotational direction (for example, in the clockwise direction when viewed from the rotary shaft support portion side), the wire rope 3 is rotated. It is wound up by the wire drum 4, and the door body 2 rises. Further, when the door body 2 descends due to its own weight (gravity), the wire rope 3 rotates the wire drum 4 in a direction opposite to the predetermined rotation direction, and the winding of the wire rope 3 is unwound. The rotating shaft 5 is coaxial with the output shaft 9 of the helical speed reducer 8 (hereinafter referred to as “reducer 8”) by the coupling 7 (coupling) on the side opposite to the wire drum 4 in the extending direction of the central axis. It is connected. Here, instead of connecting the rotary shaft 5 and the output shaft 9 with the connector 7, the rotary shaft 5 and the output shaft 9 may be mechanically engaged with each other via gears or the like to transmit power. Of course, 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. The first gear 15 is coaxially attached to the input shaft 11. The second gear 16 and the third gear 17 are coaxially attached to the first intermediate shaft 12. The fourth gear 18 and the fifth gear 19 are coaxially attached to the second intermediate shaft 13. The sixth gear 20 and the seventh gear 21 are coaxially attached to the third intermediate shaft 14. The eighth gear 22 is coaxially attached to the output shaft 9. Helical gears are used for the first to eighth gears 15 to 22. Of course, gears other than the helical gear may be used.

Here, the first gear 15 and the second gear 16 mesh with a predetermined gear ratio (for example, 5.1) larger than 1, and the third gear 17 and the fourth gear 18 have a predetermined gear ratio larger than 1 (for example, 5.1). The fifth gear 19 and the sixth gear 20 mesh with a predetermined gear ratio (for example, 4.0) larger than 1, and the seventh gear 21 and the eighth gear 22 mesh with a predetermined gear larger than 1. It meshes in a ratio (eg, 4.3). That is, the speed reducer 8 increases the torque from the input shaft 11 to the output shaft 9 at a gear ratio of about 315, and increases the torque from the first intermediate shaft 12 to the output shaft 9 at a gear ratio of about 62. When the torque is transmitted from the output shaft 9 to the input shaft 11 or the first intermediate shaft 12 (when the door is reversely driven) when the door body 2 descends due to its own weight, the gear ratio is the input shaft 11 or the first. 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 body 2 is raised in a normal state in which the power supply functions normally. The motor rotation shaft (not shown) fixed to the rotor of the motor 25 is coaxially connected to the input shaft 11 via a connector or a coupling (not shown). Commercial power is supplied to the electric motor 25 from a power source (not shown) via a conducting wire 26 and a control panel 27. The input shaft 11 and the motor rotating shaft may not be connected by a coupling tool or a coupling, but may be mechanically engaged with each other via gears or the like to transmit power.

Further, the gate opening / closing device S1 includes a hydraulic motor 29. The hydraulic motor rotary shaft 31, which is the output shaft of the hydraulic motor 29, is coaxially connected to the first intermediate shaft 12 via a coupling 32. The first intermediate shaft 12 and the hydraulic motor rotary shaft 31 may not be connected by a coupling 32, but may be mechanically engaged with each other via gears or the like to transmit power. Then, a first hydraulic oil passage 35 and a second hydraulic oil passage 36 are provided between the hydraulic motor 29 and the hydraulic oil storage tank 34 for storing the hydraulic oil, and hydraulic pressure for supplying and discharging the hydraulic oil to the hydraulic motor 29. The circuit C1 is provided. The hydraulic oil storage tank 34 is a tank having 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, a position 1 to 10 m or 5 to 20 m higher). ing.

Since the wire rope winch type gate opening / closing device S1 requires a rotational force to rotate the wire drum 4 in an emergency, the actuator for rotationally driving the wire drum 4 has an opening / closing lift, an opening / closing speed, a cost, and layout. From the viewpoint, a hydraulic motor 29, which is generally compact and has a simple structure, is used. The hydraulic motor 29 has a function of combining an electric motor and a speed reducer in a mechanical gate opening / closing device, has sufficient production control for general industrial use, has high quality and reliability, and has a lot of usage records. 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, and particularly power is provided between the electric motor 25 and the hydraulic motor 29. There is no source switchgear or operating gear mechanism. Generally, when two power sources are provided in this type of gate switchgear, a switching device or a differential gear mechanism is installed between one power source and the other power source. In this case, the gate is installed. The number of parts of the opening / closing mechanism increases, the structure becomes complicated, and a large amount of cost is required for its installation (for example, 3 to 5 million yen). Therefore, since the gate opening / closing device S1 according to the present invention is mainly used for emergency operation, it is not provided with a switching device or a differential gear mechanism, and the equipment layout is made compact and the number of parts is reduced. We are trying to reduce the incidence rate, further reduce the cost, and promote the deployment or application to many institutions and facilities that manage floodgates.

The emergency hydraulic system R can be portable and can be used with various gate opening / closing devices, as will be described later. On the other hand, the hydraulic motor 29 is not a portable type, but a permanent type fixed to the speed reducer 8. This is for the following reasons. That is, in order to input the output of the hydraulic motor 29 to the existing gate opening / closing device, strong torque and constant rotation are required, and precise installation management (horizontal level, shaft core height) is required. Therefore, if the hydraulic motor 29 is portable, installation management by a skilled operator is required. Further, since the opening / closing torque and the rotation speed (required oil amount) are design conditions unique to 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 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 it does not substantially hinder the installation.

In the gate opening / closing device S1, the hydraulic motor rotary shaft 31 is connected to the first intermediate shaft 12 via the coupling 32. Therefore, when the existing speed reducer 8 is used, the speed reducer 8 or the first intermediate is used. It is necessary to modify or create the shaft 12 so that it can be connected to the hydraulic motor rotary shaft 31. In this case, the upper lid of the housing 10 is opened, the first intermediate shaft 12 and the second and third gears 16 and 17 attached to the first intermediate shaft 12 are removed and brought to the factory without bringing the entire speed reducer 8 to the factory. , The third gears 16 and 17 need to be reused, and only the first intermediate shaft 12 needs to be newly adjusted or processed. Therefore, this method of connecting the hydraulic motor rotary 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 rotary shaft 31 is connected to the first intermediate shaft 12 via the coupling 32, but the hydraulic motor rotary shaft 31 is on the opposite side of the electric motor 25 in the direction in which the input shaft central shaft extends. It may be coaxially connected to the input shaft 11 via a coupling at the end of the. Further, the hydraulic motor rotary shaft 31 may be coaxially connected to an intermediate shaft other than the first intermediate shaft 12 (for example, the third intermediate shaft 13) 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 the hydraulic circuit C1 that supplies and discharges hydraulic oil to the hydraulic motor 29. Note that FIG. 2 shows a state in which the emergency hydraulic device R is connected to the hydraulic circuit C1 for convenience, but normally, the emergency hydraulic device R is not connected to the hydraulic circuit C1. As shown in FIG. 2, one end of the first hydraulic oil passage 35 constituting the hydraulic circuit C1 is connected to the first hydraulic oil supply / discharge port 40 of the hydraulic motor 29, and the other end is the hydraulic oil storage tank 34. It is connected to the hydraulic oil and is immersed in the hydraulic oil stored in the hydraulic oil storage tank 34. Further, one end of the second hydraulic oil passage 36 is connected to the second hydraulic oil supply / discharge port 41 of the hydraulic motor 29, and the other end is connected to the hydraulic oil storage tank 34 and is stored in the hydraulic oil storage tank 34. It is immersed in the hydraulic oil.

The hydraulic circuit C1 is provided with a first bypass passage 42 connecting the first hydraulic oil passage 35 and the second hydraulic oil passage 36, and the first bypass passage 42 is provided in the first hydraulic oil passage 35 or the second operation. A relief valve 43 for adjusting the pressure of the hydraulic oil in the oil passage 36 is provided. Further, a second bypass passage 44 connecting the first hydraulic oil passage 35 and the second hydraulic oil passage 36 is provided on the hydraulic motor side of the first bypass passage 42, and the first operation is performed in the second bypass passage 44. A flow rate adjusting valve 45 for adjusting the flow rate of the hydraulic oil in the oil passage 35 or the second hydraulic oil passage 36 is provided.

On the hydraulic oil storage tank side from the first bypass passage 42, the first hydraulic oil passage 35 is provided with a first multifunction valve 46, which is a series of multipurpose stop valves, while the second hydraulic oil passage 36 is of a series type. A second multifunction valve 47, which is a multipurpose stop valve, is provided. Here, the first and second multifunction valves 46 and 47 may be provided in the first and second hydraulic oil passages 35 and 36 at positions different from the above, for example, at a position close to the hydraulic motor 29. The first multifunction valve 46 and the second multifunction valve 47 are used to connect the emergency hydraulic device R to the hydraulic circuit C1 when the motor 25 does not function due to a power failure or the like, for example, in the event of a disaster. The application is not limited to the connection of such an emergency hydraulic device R, and can be used for various operations such as connection of a hydraulic gauge and inspection of hydraulic oil leakage.

The first multifunction valve 46 includes a manual 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 oil passage 35 on the hydraulic oil storage tank side from the first bypass passage 42, and the first hydraulic oil passage 35 can be opened and closed manually. Further, the first external connection port 46b communicates with the first hydraulic oil passage 35 on the hydraulic oil storage tank side from the on-off valve 46a, and the second external connection port 46c communicates with the first hydraulic oil passage 35 on the hydraulic motor side from the on-off valve 46a. It communicates with 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 and 47 have the same structure.

The emergency hydraulic system R is provided by 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 being constantly supplied with energy (for example, commercial power) from the outside. It includes a driven hydraulic pump 53 and a manual oil passage switching valve 54 provided (straddling) the first oil passage 50 and the second oil passage 51. Then, at one end of the first oil passage 50, a connector 50a having a check valve, which can be connected to the connector of the second external connection port 46c of the first multifunction valve 46, is attached. On the other hand, at one end of the second oil passage 51, a connector 51a having a check valve, which can be connected to the connector of the second external connection port 47c of the second multifunction valve 47, is attached. ing. Further, 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 should be connected to any of the external connection ports 46b, 46c, 47b and 47c of the first and second multifunction valves 46 and 47. Can be done.

The oil passage switching valve 54 switches the flow of hydraulic oil in the first and second oil passages 50 and 51 in the forward direction or the 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 supplied to the first oil passage 50 (the portion opposite to the hydraulic pump 53 with respect to the oil passage switching valve 54). The first state of supplying to the outside via the oil passage 51 and the second state of supplying to the outside via the second oil passage 51 (the portion opposite to the hydraulic pump 53 with respect to the oil passage switching valve 54) and the operation. It can be set in any of the third states where the oil is not supplied to the outside.

As shown in FIG. 3, the emergency hydraulic system R is portable and has a lightweight and compact structure arranged in a frame 56 to which the moving wheels 55 are attached. Therefore, if the emergency hydraulic device R is stored in an appropriate place, it can be quickly and easily moved to connect to the hydraulic circuit C1 in the event of a disaster or emergency due to an earthquake or the like, and the door body 2 can connect the water gate 1 without any trouble. It 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 system R (patent pending: Japanese Patent Application No. 2013-092670) was jointly developed by the applicant of the present application (Independent Administrative Institution Water Resources Organization and U-Tech Co., Ltd.), and is a hydraulic cylinder type gate valve. When the power supply is lost (when the commercial power supply is lost, when the standby generator fails), when the control panel (machine side operation panel) fails, or when the hydraulic unit fails, bring it to the site and expose the hydraulic unit. The gate opening / closing device can be operated simply by connecting to the multifunction valve in the piping section.

As described above, since the emergency hydraulic system 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 reserve power source of the gate switchgear needs to consider the degree of social impact caused by the failure of the gate switchgear. Therefore, instead of permanently installing a spare power source in all facilities, a portable spare that can be shared by multiple facilities in facilities with a certain tolerance due to the degree of social impact on emergency operations in the event of a failure. Adopting the method of bringing in a power source is advantageous in terms of equipment cost and maintenance cost.

Generally, a shaft switchgear is the mainstream of a portable standby power source used in a wire rope winch type gate switchgear, but the shaft switchgear has the above-mentioned problems. On the other hand, the emergency hydraulic system R is a practical and inexpensive reserve power source. Generally, from the standpoint of a facility manager, having a plurality of portable standby power units is disadvantageous in terms of maintenance, labor and cost. However, when the emergency hydraulic device R is used, for example, the wire rope winch type gate opening / closing device S1 can be opened / closed by using the emergency hydraulic device already possessed by the hydraulic cylinder type gate opening / closing device.

Hereinafter, an example of the operation procedure of the gate opening / closing device S1 according to the first embodiment of the present invention will be described.
(1) When opening the water gate at normal times When the water gate 1 is opened at normal times when the power supply functions normally, the control panel 27 is operated to supply electric power to the electric motor 25 and rotate it. At this time, the rotation of the 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 rotation direction, and the wire rope 3 is wound up to raise the door body 2. As a result, the floodgate 1 is opened. When the door body 2 rises to a predetermined position, the supply of electric power to the electric motor 25 is stopped and the wire drum 4 is locked. As a result, the door body 2 is fixed and held at that position.

At this time, the hydraulic motor rotary shaft 31 is rotationally driven by the first intermediate shaft 12. As a result, the hydraulic motor 29 functions as a pump, and the hydraulic oil circulates between the oil chamber in the hydraulic motor and the hydraulic oil storage tank 34 via the first and second hydraulic oil passages 35 and 36. That is, the hydraulic oil is in an idle state, which prevents troubles such as rusting due to sticking and running out of oil, and can improve reliability during emergency operation. In this case, since the rotational speeds of the first intermediate shaft 12 and the hydraulic motor rotary shaft 31 are relatively small, the circulation amount of the hydraulic oil is relatively small, and the flow of the hydraulic oil does not become the rotational resistance of the first intermediate shaft 12 so much. .. Therefore, the electric motor 25 or the speed reducer 8 is hardly braked by the hydraulic motor 29.

(2) When closing the water gate in the normal time When closing the water gate 1 in the normal time, the lock of the wire drum 4 is released with the power to the electric motor 25 stopped. As a result, the door body 2 descends at a higher speed than when ascending due to gravity (self-weight), and the portion of the wire rope 3 that is not wound around the wire drum 4 moves downward accordingly. As a result, the wire rope 3 causes the wire drum 4 to rotate in the direction opposite to the case where the water gate 1 is opened. The rotation of the wire drum 4 or the rotary 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 rotary shaft 31 is rotationally driven by the first intermediate shaft 12. The rotating shaft of the motor is also driven to rotate and runs idle. As a result, the hydraulic motor 29 functions as a pump, and the hydraulic oil circulates between the oil chamber in the hydraulic motor 29 and the hydraulic oil storage tank 34 via the first and second hydraulic oil passages 35 and 36. Thus, the door body 2 descends at an appropriate speed and closes the floodgate 1 without colliding with the bottom of the channel.

(3) When opening the floodgate in an emergency When the floodgate 1 is opened 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 multifunction valve 46, and the connector of the second oil passage 51 is connected. The 51a is connected to the second external connection port 47c 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) in the hydraulic oil in the hydraulic oil storage tank 34. The hydraulic oil supply / discharge ports 50b and 51b may be introduced (immersed) in the hydraulic oil stored in the hydraulic oil container other than the hydraulic oil storage tank 34.

Next, the prime mover 52 is started, and the hydraulic pump 53 is operated by the driving force of the prime mover 52. After that, the oil passage switching valve 54 is set in the first state of supplying hydraulic oil to the outside through the first oil passage 50. As a result, the hydraulic oil in the hydraulic oil storage tank 34 is supplied by the hydraulic pump 53 to the first oil passage 50, the second external connection port 46c of the first multifunction valve 46, the first hydraulic oil passage 35, and 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 rotary shaft 31 is rotated. The hydraulic oil whose pressure has dropped by rotating the hydraulic motor rotary shaft 31 is the second hydraulic oil supply / discharge port 41, the second hydraulic oil passage 36, and the second external connection port 47c of the second multifunction valve 47. It returns to the hydraulic oil storage tank 34 via the second oil passage 51.

Thus, the rotation of the hydraulic motor rotary shaft 31 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 rotation direction, and the wire rope 3 is wound up to raise the door body 2. As a result, the floodgate 1 is opened. When the door body 2 rises to a predetermined position, the oil passage switching valve 54 is set to a third state in which hydraulic oil is not supplied to the outside, and the wire drum 4 is locked. As a result, the door body 2 is fixed and held at that position.

(4) When closing the floodgate in an emergency The operation when closing the floodgate 1 in an emergency is substantially the same as the operation when closing the floodgate 1 in the normal time, and the door body 2 descends at an appropriate speed. Close the lock 1 without hitting the bottom of the channel.

According to the gate opening / closing device S1 according to the first embodiment of the present invention, unlike the conventional gate opening / closing device of this type, it is not necessary to provide a plurality of brakes or differential gears. The structure of the self-weight descent type water gate 1 can be made compact and simplified. Further, even when a power source such as a power source loses its function in the event of a disaster such as an earthquake or a typhoon, the emergency hydraulic device R can raise and lower the door body 2 to open and close the water gate 1, so that a disaster caused by a flood or a tsunami can be opened and closed. Can be prevented or alleviated.

(Variation example of Embodiment 1)
Hereinafter, with reference to FIG. 4, a modified example of the first embodiment in which the present invention (Embodiment 1) is applied to an existing wire rope winch type gate opening / closing device (for example, a female man stone head work earth and sand discharge gate in Fukuoka Prefecture). The gate opening / closing device S1'related to the above will be described. 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, in the motor 25 (motor rotating shaft), the motor rotating shaft is not directly connected to the input shaft 11 via the connecting tool as in the gate opening / closing device S1 shown in FIG. 1, but is bent by a plurality of connecting tools. The link mechanism 60 is connected to the input shaft 11 of the speed reducer 8 via the hydraulic push-up brake device 61 (mu lifter brake). Further, 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 pair having a gear ratio of 5.5). Such a difference from the gate opening / closing device S1 shown in FIG. 1 is caused by the application of the present invention to the existing wire rope winch type gate opening / closing device S1'.

Further, in the gate opening / closing device S1'shown in FIG. 4, the first hydraulic oil passage 35 is not a first multifunctional valve, but two on-off valves and an external communication between these on-off valves and the first hydraulic oil passage 35. While the first external connection mechanism 63 having a connection port is provided, the second hydraulic oil passage 36 is provided with two on-off valves instead of the second multifunction valve and the second hydraulic oil passage 36 between these on-off valves. A second external connection mechanism 64 having an external connection port to communicate with is provided. In the example shown in FIG. 4, the emergency hydraulic system R can use the hydraulic oil in the existing hydraulic oil tank 65. Of course, the emergency hydraulic device R may use the hydraulic oil in the hydraulic oil storage tank 34.

In this gate opening / closing device S1', the emergency hydraulic device R is used by the following operating procedure.
(1) The emergency hydraulic device R is carried in and arranged in the vicinity of the hydraulic motor 29 of the gate opening / closing device 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) While closing each on-off valve on the hydraulic oil storage tank side of the first and second hydraulic oil passages 35 and 36, open each on-off valve on the hydraulic motor side, and then connect the connector 50a of the first oil passage 50. It is connected to the external connection port of the first external connection mechanism 63, and the connector 51a of the second oil passage 51 is connected to the external connection port of the second external connection mechanism 64.
(4) The brake of the motor 25 and the hydraulic push-up type brake device 61 are manually released.
(5) The prime mover 52 of the emergency hydraulic system R is started (see FIGS. 2 and 3).
(6) Operate the lever of the oil passage switching valve 54 of the emergency hydraulic device 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 this gate opening / closing device S1', in which the first embodiment of the present invention is applied to the existing wire rope winch type gate opening / closing device, "wire rope" is a failure peculiar to the wire rope winch type gate opening / closing device in terms of operation. It is necessary to pay attention to "slack" and "wire rope overload". If the power supply and control panel (machine side operation panel) of the gate switchgear S1'are functioning normally, an alarm will be issued by the detection device built into the wire rope terminal device, but when the power is lost or the control panel Since there is no such notification in the event of a failure, some operators are required. For example, a total of four operators are assigned, one for operating the emergency hydraulic system R, one for checking the gate opening, and two for checking the wire rope terminal device and the left and right banks of the door and wire rope. Is preferable.

Thus, according to the gate opening / closing device S1', the floodgate 1 is surely opened in the event of a power loss assumed in the event of a large-scale disaster, or in the event of a failure of equipment such as a standby generator, a control panel (machine side operation panel), or a regular motor. It can be opened and closed, and the function that the floodgate 1 should have can be maintained. As described above, the first embodiment of the present invention can be easily applied to the existing wire rope winch type gate opening / closing device, and has been introduced into the wire rope winch type gate opening / closing device of many engines and facilities. Since the hydraulic motor 29, which is an inexpensive and simple structure actuator, can be installed in the helical speed reducer for the gate, it can be deployed in many facilities.

(Embodiment 2)
Hereinafter, the wire rope winch type gate opening / closing device S2 according to the second embodiment of the present invention will be described with reference to FIGS. 5 to 6. However, since the basic configuration of the gate opening / closing device S2 according to the second embodiment is the same as that of the gate opening / closing device S1 according to the first embodiment shown in FIGS. The difference from the gate opening / closing device S1 according to the first embodiment shown in FIG. 2 will be described. Among the components of the gate switchgear S2 shown in FIGS. 5 to 6, the same reference numbers are given to the components common to the components of the gate switchgear S1 shown in FIGS. 1 to 2. The gate opening / closing device S2 according to the second embodiment can also be applied to a self-weight descent type coupure.

As shown in FIGS. 5 to 6, in the gate opening / closing device S2 according to the second embodiment, the hydraulic motor 29 is on the rear side of the motor 25, that is, on the side opposite to the speed reducer 8 in the direction in which the central axis of the motor rotating shaft 70 extends. (It is arranged on the right side in the positional relationship in FIG. 5A), and the hydraulic motor rotary shaft 31 is not connected to the first intermediate shaft 12. The hydraulic motor rotary shaft 31 is coaxially connected to the motor rotary shaft 70 via a coupling 32 on the side opposite to the input shaft 11 in the direction in which the central shaft of the motor rotary shaft 70 extends. Therefore, the motor rotary shaft 70 and the hydraulic motor rotary 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. 1 to 2. 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. Note that FIG. 6 shows a state in which the emergency hydraulic device R is connected to the hydraulic circuit C2, but normally, the emergency hydraulic device R is not connected to the hydraulic circuit C2.

The gate opening / closing device S2 according to the second embodiment has an advantage that only the electric motor 25 needs to be a special product. However, in general, the electric motor for a floodgate is often a special product, and further of such a special product. Special products may take a little longer to manufacture and may cost a little more.

In the gate opening / closing device S2 shown in FIG. 5, the motor rotating shaft 70 and the hydraulic motor rotating shaft 31 are coaxially connected via a coupling 32. However, the power transmission mechanism between the motor rotary shaft 70 and the hydraulic motor rotary shaft 31 is not limited to such a mechanism, and the motor rotary shaft 70 and the hydraulic motor rotary shaft 31 are mechanically engaged with each other. Anything can be used as long as it can transmit power between them.

9 (a) to 9 (d) show some specific examples of a power transmission mechanism for mechanically engaging the motor rotary shaft 70 and the hydraulic motor rotary shaft 31. The power transmission mechanism shown in FIG. 9A is the same as that of the gate opening / closing device S2 shown in FIG. 5, and the motor rotating shaft 70 and the hydraulic motor rotating shaft 31 are coaxial with each other via the coupling 32. It is connected. In the power transmission mechanism shown in FIG. 9B, the motor rotary shaft 70 and the hydraulic motor rotary shaft 31 are arranged in parallel with each other and mechanically engaged with each other by a sprocket mechanism 72 (or a gear mechanism). In the power transmission mechanism shown in FIG. 9 (c), the motor rotation shaft 70 of the motor 25 is connected to the input shaft 11 of the speed reducer 8 via the bent link mechanism 73, while the motor rotation shaft 70 and the hydraulic motor rotation shaft. 31 are arranged parallel to each other and are mechanically engaged with each other by a sprocket mechanism 74 (or a gear mechanism). In the power transmission mechanism shown in FIGS. 9A to 9C, the hydraulic motor rotary shaft 31 is the motor rotary shaft 70 on the side opposite to the side where the motor rotary shaft 70 mechanically engages with the input shaft 11. It is mechanically engaged.

In the power transmission mechanism shown in FIG. 9D, the motor rotary shaft 70 and the hydraulic motor rotary shaft 31 are arranged in parallel with each other, and both are mechanically engaged with the input shaft 11 by the gear mechanism 75. In the power transmission mechanism shown in FIG. 9D, the hydraulic motor rotary shaft 31 is engaged with the motor rotary shaft 70 on the side where the motor rotary shaft 70 is mechanically engaged with the input shaft 11.

When the hydraulic motor rotary shaft 31 mechanically engages with the motor rotary shaft 70 on the side where the motor rotary shaft 70 dynamically engages with the input shaft 11, for example, it is shown in FIGS. 10 (a) to 10 (d). As described above, power switching devices 76a and 76b for differentiating the motor rotary shaft 70 and the hydraulic motor rotary shaft 31 may be arranged between the input shaft 11, the motor rotary shaft 70, and the hydraulic motor rotary shaft 31. ..

In the power transmission mechanism shown in FIGS. 10A to 10B, 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 motor 25 or the motor rotary shaft 70 is fixed or locked, power is transmitted between the hydraulic motor rotary shaft 31 and the input shaft 11. On the contrary, when the hydraulic motor 29 or the hydraulic motor rotary shaft 31 is fixed or locked, power is transmitted between the motor rotary shaft 70 and the input shaft 11.

Further, in the power transmission mechanism shown in FIGS. 10 (c) to 10 (d), the power switching device 76b includes a planetary gear mechanism 80. Here, when the motor 25 or the motor rotary shaft 70 is fixed or locked, power is transmitted between the hydraulic motor rotary shaft 31 and the input shaft 11. On the contrary, when the hydraulic motor 29 or the hydraulic motor rotary shaft 31 is fixed or locked, power is transmitted between the motor rotary shaft 70 and the input shaft 11. The power switching devices 76a and 76b shown in FIGS. 10A to 10B are merely examples, and it goes without saying that another power switching device having a structure different from these may be used.

Hereinafter, an example of the operation procedure of the gate opening / closing device S2 according to the second embodiment shown in FIGS. 5 to 6 will be described.
(1) When opening the water gate at normal times When opening the water gate 1 at normal times, the door body 2 is raised and the water gate 1 is basically operated in the same manner as in the case of the gate opening / closing device S1 according to the first embodiment. be opened. However, the hydraulic motor rotary shaft 31 is rotationally driven by the motor rotary shaft 70. As a result, the hydraulic motor 29 functions as a pump, and the hydraulic oil circulates between the oil chamber in the hydraulic motor 29 and the hydraulic oil storage tank 34 via the first and second hydraulic oil passages 35 and 36. In this case, since the rotational speed of the hydraulic motor rotary shaft 31 is relatively small, the flow rate of the hydraulic oil is relatively small, and the flow of the hydraulic oil does not become a rotational resistance of the input shaft 11 (motor rotary shaft 70) so much.

(2) When closing the water gate in the normal time When closing the water gate 1 in the normal time, the door body 2 is lowered and the water gate 1 is basically operated in the same manner as in the case of the gate opening / closing device S1 according to the first embodiment. Closed. However, the hydraulic motor rotary shaft 31 is rotationally driven via the motor rotary shaft 70. As a result, the hydraulic motor 29 functions as a pump, and the hydraulic oil circulates between the oil chamber in the hydraulic motor and the hydraulic oil storage tank 34 via the first and second hydraulic oil passages 35 and 36. Thus, the door body 2 descends at an appropriate speed and closes the floodgate 1 without colliding with the bottom of the channel.

(3) When opening or closing the floodgate in an emergency When opening the floodgate 1 in an emergency, the door body 2 is raised and the floodgate is basically operated in the same manner as in the case of the gate opening / closing device S1 according to the first embodiment. 1 is opened. Further, the operation for closing the floodgate 1 in an emergency is the same as the operation for closing the floodgate 1 in the normal time, and the door body 2 descends at an appropriate speed and the floodgate does not collide with the bottom of the channel. 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, a plurality of brakes and differential gear mechanisms are not required, so that the gate opening / closing device is not required. The structure of the self-weight descent type water gate 1 provided with the device S2 or the device S2 can be made compact and simplified. Further, even when a power source such as a power source loses its function in the event of a disaster such as an earthquake or a typhoon, the emergency hydraulic device R can raise and lower the door body 2 to open and close the water gate 1, so that a disaster caused by a flood or a tsunami can be opened and closed. Can be prevented or alleviated.

(Embodiment 3)
Hereinafter, the wire rope winch type gate opening / closing device S3 according to the third embodiment of the present invention will be described with reference to FIGS. 7 to 8. However, since the basic configuration of the gate opening / closing device S3 according to the third embodiment is the same as that of the gate opening / closing device S1 according to the first embodiment shown in FIGS. The difference from the gate opening / closing device S1 according to the first embodiment shown in FIG. 2 will be described. Among the components of the gate switchgear S3 shown in FIGS. 7 to 8, the same reference numbers are given to the components common to the components of the gate switchgear S1 shown in FIGS. 1 to 2. The gate opening / closing device S3 according to the third embodiment can also be applied to a self-weight descent type coupure.

As shown in FIG. 7, in the gate opening / closing device S3 according to the third embodiment, the electric motor for driving the input shaft 11 of the speed reducer 8 is not provided, 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 rotary shaft 31 is coaxially connected to the input shaft 11 via a coupling (not shown). The power transmission mechanism between the input shaft 11 and the hydraulic motor rotary shaft 31 is not limited to such a mechanism, and the input shaft 11 and the hydraulic motor rotary shaft 31 are mechanically engaged with each other. Anything that can transmit power may be used.

Since the hydraulic oil supply device C3 of the gate opening / closing device S3 is basically for operating the hydraulic motor 29 at normal times, the configuration is considerably different from 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 case of 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, in the hydraulic oil supply device C3, one end thereof is connected to the first and second hydraulic oil supply / discharge ports 40 and 41 of the hydraulic motor 29, respectively. 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, one end of which is connected to the oil passage switching valve 83, respectively. Fourth hydraulic oil passages 84 and 85, a hydraulic oil tank 86 for storing hydraulic oil, and a hydraulic pump 88 driven by a motor 87 are provided. Note that FIG. 8 shows a state in which the emergency hydraulic device R is connected to the hydraulic oil supply device C3, but normally, the emergency hydraulic device R is not connected to the hydraulic oil supply device C3.

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 pump 88, and switches the oil passage through the third hydraulic oil passage 84. Supply to the valve 83. Further, a bypass hydraulic oil passage 89 for connecting the third hydraulic oil passage 84 on the oil passage switching valve side from the hydraulic pump 88 (the portion downstream from the hydraulic pump 88) and the fourth hydraulic oil passage 85 is provided. A relief valve 90 for adjusting the hydraulic pressure in the third hydraulic oil passage 84 is interposed in the bypass hydraulic oil passage 89. Further, between the first hydraulic oil passage 81 and the second hydraulic oil passage 82, a hydraulic pressure adjusting device 91 for adjusting the hydraulic pressure in the first hydraulic oil passage 81, which is provided with a relief valve and a plurality of check valves, is provided. Has been done.

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

The oil passage switching valve 83 switches the supply / discharge path of hydraulic oil to 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 the hydraulic oil discharged from the hydraulic pump 88 is passed through the first hydraulic oil passage 81. The first state of supplying to the first hydraulic oil supply / discharge port 40 of the hydraulic motor 29 and the second state of supplying to the second hydraulic oil supply / discharge port 41 of the hydraulic motor 29 via the second hydraulic oil passage 82. And, it can be set to any of the third states in which the hydraulic oil is not supplied to the hydraulic motor 29.

Thus, in the hydraulic motor 29, the hydraulic oil is supplied to the first hydraulic oil supply / discharge port 40 via the first hydraulic oil passage 81, while the hydraulic oil in the oil chamber motor is supplied to the second hydraulic oil supply / discharge port 41. The hydraulic motor rotary shaft 31 (see FIG. 7) is rotated in a predetermined direction (direction in which the door body 2 is raised) when the oil is discharged from the oil through the second hydraulic oil passage 82. At this time, the input shaft 11 of the speed reducer 8 is rotationally driven by the hydraulic motor 29, and the door body 2 rises as will be described later. The 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 is supplied from the first hydraulic oil supply / discharge port 40 to the first hydraulic oil passage. When discharged via 81, the hydraulic motor rotation shaft (not shown) is rotated in a direction opposite to the predetermined direction.

Hereinafter, an example of the operation procedure of the gate opening / closing device S3 according to the third embodiment of the present invention will be described.
(1) When opening the floodgate during normal operation When the hydraulic oil supply device C3 functions normally, when opening the floodgate 1 during normal operation, the control panel 27 is operated to supply electric power to the motor 87, which is rotated to rotate the hydraulic pump. Operate 88. Then, the oil passage switching valve 83 is set in 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 rotation shaft (not shown) is rotated in the predetermined direction, and the input shaft 11 of the speed reducer 8 is rotated in the direction of raising the door body 2. The rotation of the input shaft 11 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 rotation direction, and the wire rope 3 is wound up to raise the door body 2. As a result, the floodgate 1 is opened. When the door body 2 rises to a predetermined position, the hydraulic motor 29 is stopped and the wire drum 4 is locked. As a result, the door body 2 is fixed and held at that position.

(2) When closing the water gate in normal time When closing the water gate 1 in normal time, set the oil passage switching valve 83 to the third state, and set the end of the first hydraulic oil passage 81 on the oil passage switching valve side and the second. The end of the hydraulic oil passage 82 on the oil passage switching valve side is communicated with the end of the hydraulic oil passage 82 via the oil passage switching valve 83. After that, the lock of the wire drum 4 is released. As a result, the door body 2 descends at a relatively high speed due to gravity (self-weight), and along with this, the portion of the wire rope 3 that is 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 the case where the water gate 1 is opened. The rotation of the wire drum 4 or the rotary 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 rotary 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 door body 2 descends at an appropriate speed and closes the floodgate 1 without colliding with the bottom of the channel.

(3) When opening the floodgate in an emergency When the hydraulic oil supply device C3 does not function normally due to a disaster such as an earthquake or typhoon When opening the floodgate 1 in an emergency, close the second and fourth on-off valves 93 and 96 manually. , 1st and 3rd on-off valves 92, 95 are left open. Then, the connector 50a of the first oil passage 50 is connected to the first external connection port 94, and the connector 51a of the second oil passage 51 is connected to the second external connection port 97. After that, 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) in the hydraulic oil in the hydraulic oil tank 86.

Next, the prime mover 52 is started, and the hydraulic pump 53 is operated by the driving force of the prime mover 52. After that, the oil passage switching valve 54 is set in the first state of supplying hydraulic oil to the outside through the first oil passage 50. As a result, the hydraulic oil in the hydraulic oil tank 86 is supplied to 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 by the hydraulic pump 53. It is supplied to the oil chamber of the hydraulic motor 29 in a high pressure state via the above. As a result, the hydraulic motor rotation shaft (not shown) is rotated. The hydraulic oil whose pressure has dropped by rotating the hydraulic motor rotation shaft (not shown) is the second hydraulic oil supply / discharge port 41, the second hydraulic oil passage 82, the second external connection port 97, and the second oil. It returns to the hydraulic oil tank 86 via the road 51.

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 rotation direction, and the wire rope 3 is wound up to raise the door body 2. As a result, the floodgate 1 is opened. When the door body 2 rises to a predetermined position, the oil passage switching valve 54 is set to a third state in which hydraulic oil is not supplied to the outside, and the wire drum 4 is locked. As a result, the door body 2 is fixed and held at that position.

(4) When closing the floodgate in an emergency The operation when closing the floodgate 1 in an emergency is the same as the operation when closing the floodgate 1 in the normal time, the door body 2 descends at an appropriate speed, and the bottom of the channel Close the floodgate 1 without colliding with.

According to the gate opening / closing device S3 according to the third embodiment of the present invention, unlike the conventional gate opening / closing device of this type, a plurality of brakes and differential gears are not required, and therefore the gate opening / closing device S3 or the gate opening / closing device S3 is provided. The structure of the self-weight descent type water gate 1 can be made compact and simplified. Further, even when a power source such as a power source loses its function in the event of a disaster such as an earthquake or a typhoon, the emergency hydraulic device R can raise and lower the door body 2 to open and close the water gate 1, so that a disaster caused by a flood or a tsunami can be opened and closed. Can be prevented or alleviated.

S1 to S3 gate opening / closing device, S1'gate opening / closing device, C1 to C3 hydraulic circuit, R emergency hydraulic device, 1 water gate, 2 doors, 3 wire ropes, 4 wire drums, 5 rotating shafts, 6 drum supports, 7 connections Tools, 8 speed reducers, 9 output shafts, 10 housings, 11 input shafts, 12 first intermediate shafts, 13 second intermediate shafts, 14 third intermediate shafts, 15 first gears, 16 second gears, 17 third gears, 18 4th gear, 19 5th gear, 20 6th gear, 21 7th gear, 22 8th gear, 25 electric motor, 26 leads, 27 control panel, 29 hydraulic motor, 31 hydraulic motor rotary shaft, 32 coupling, 34 Hydraulic oil storage tank, 35 1st hydraulic oil passage, 36 2nd hydraulic oil passage, 40 1st hydraulic oil supply / discharge port, 41 2nd hydraulic oil supply / discharge port, 42 1st bypass passage, 43 relief valve, 44 2nd bypass Passage, 45 Flow control valve, 46 1st multifunction valve, 47 2nd multifunction valve, 50 1st oil passage, 51 2nd oil passage, 52 prime mover, 53 hydraulic pump, 54 hydraulic oil switching valve, 55 wheels, 56 Frame, 60 link mechanism, 61 hydraulic push-up brake device, 62 reduction gear pair, 63 first external connection mechanism, 64 second external connection mechanism, 65 hydraulic oil tank, 70 electric motor rotary 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 2nd hydraulic oil passage, 83 oil passage switching valve, 84 3rd hydraulic oil passage, 85 4th 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 / closing device that lowers the door body by its own weight while raising the door body that opens and closes the floodgate or coupure by power.
The wire rope that suspends the door body and
A rotatable wire drum around which the wire rope is wound, and
An output shaft that is mechanically engaged with the rotary shaft of the wire drum via a gear pair or coaxially connected to the rotary shaft to drive the rotary shaft to rotate or to be driven to rotate by the rotary shaft. A speed reducer having an input shaft and a 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.
A hydraulic motor having a rotary shaft that is mechanically engaged with the input shaft via a gear pair or coaxially connected to the input shaft to drive the input shaft to rotate or to be driven to rotate by the input shaft. With the motor
A hydraulic oil supply / discharge device for supplying / discharging hydraulic oil to the hydraulic motor via a hydraulic oil supply / discharge passage connected to the hydraulic motor.
It is equipped with an emergency hydraulic device capable of arbitrarily connecting to the hydraulic oil supply / discharge passage to supply / discharge hydraulic oil to the hydraulic motor .
The hydraulic motor rotary shaft is the only member other than the gear mechanism that mechanically engages with the input shaft via a gear pair or is coaxially connected to the input shaft to drive the input shaft to rotate. A gate opening / closing device characterized by. The hydraulic oil supply / discharge passage includes a first hydraulic oil passage connected to one hydraulic oil supply / discharge port of the hydraulic motor and a second hydraulic oil passage connected to the other hydraulic oil supply / discharge port of the hydraulic motor. And have
A first on-off valve that opens and closes the first hydraulic oil passage and a first external connection port that communicates with the first hydraulic oil passage on the hydraulic motor side of the first on-off valve are interposed in the first hydraulic oil passage. Set up,
A second on-off valve that opens and closes the second hydraulic oil passage and a second external connection port that communicates with the second hydraulic oil passage on the hydraulic motor side of the second on-off valve are interposed in the second hydraulic oil passage. Set up,
The emergency hydraulic system is
A port connector capable of connecting to the first external connection port is attached to one end, and a hydraulic oil supply / discharge port that can be introduced into a hydraulic oil container is provided at the other end. 1 oil passage and
A port connector that can be connected to the second external connection port is attached to one end, and a hydraulic oil supply / discharge port that can be introduced into the hydraulic oil container is provided at the other end. 2 oil passages and
A hydraulic pump interposed in the first oil passage or the second oil passage and driven by a power source operating independently.
An oil passage switching device that is interposed across the first oil passage and the second oil passage on the port connector side from the hydraulic pump and switches the hydraulic oil supply / discharge route in the first oil passage and the second oil passage. The gate opening / closing device according to claim 1 , wherein the gate opening / closing device is provided.

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