JP3028234U - Sluice gate opening / closing device - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide an opening / closing device for a sluice, which enables efficient manual operation of the sluice and simplifies addition work to a waterway. A manual mechanical structure is such that a first self-locking device without a reduction mechanism is connected to a handle shaft, and further connected to an internal gear of a planetary gearbox, and a central shaft of the planetary gearbox is connected. 46a is locked and transmitted from the planetary gear output to the rack 15. The electric mechanical configuration is such that the planetary gearbox 26 in which the second self-locking device 49 connected to the electric motor 3 is free via a gear
Was connected to the central axis 46a. The steering wheel operation and the electric operation can be performed without switching by the respective self-locking devices 24 and 49 and the planetary gearbox 26, and are unitized.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a sluice gate opening / closing device which is installed in a place where a river and a waterway communicate with each other or between waterways so that flood control can be performed.

[0002]

[Prior art]

 Conventionally, small sluice gate opening / closing devices have been designed so that the handle can be manually operated to raise and lower the sluice door. In this case, a self-locking mechanism is provided so that the door does not descend even if the handle is released when the door is being raised. A centrifugal brake is also installed to prevent acceleration when descending.

A water gate opening / closing device 1 having a mechanism shown in FIG. 4 is provided with a handle 2 and an electric motor 3 for manual operation and electric operation. A worm gear 4 is attached to the handle 2, and a clutch 5 is provided on the output shaft of the next stage. By inserting the clutch 5, a coaxial gear 6 is rotated. On the other hand, a worm gear 9 is attached to the electric motor 3 via gears 7 and 8. Then, both rotation outputs are transmitted to the differential gear box 10.

The differential gear box 10 has an x-axis supported by a frame body and a y-axis fixed to the x-axis, and has a gear x1 and a gear x2 facing the x-axis, and a gear y1 and a gear facing the y-axis. y2 are arranged, each of them rotates freely and meshes with an adjacent gear. The gear x1 is connected to the gear 11 so that the gear 11 meshes with the worm gear 9 on the electric side. In reality, however, the worm gear 9 meshes directly with the gear x1, and the gear x2 is coupled with the gear 12 and the gear 12. Engages with the manual gear 6. Further, a gear 13 is fixed to the x-axis, and this gear 13 is connected to a rack 15 via a reduction gear group 14, and the rack 15 is moved in the vertical direction by rotation of a gear 16 at the output end of the reduction gear group 14. It is like this. The shaft fixing the manual gear 6 is connected to a centrifugal brake 19 via bevel gears 17 and 18.

When manually opening the lock, the clutch 5 is put in and the handle 2 is turned. As a result, the worm gear 4 rotates, and the gear x2 of the differential gear box 10 is also rotated midway, and the gear x1 on the electrically driven side that is opposite is also tried to rotate, but the gear x1 is rotated by the worm gear 9 on the electrically driven side. Therefore, the gears y1 and y2 rotate while moving the y-axis. That is, since the x-axis rotates, the gear 13 rotates, and finally the rack 15 can be raised and the door body can be pulled up. Further, in the electric operation, the worm gear 4 blocks the rotation of the gear x2 of the differential gearbox 10 by inserting the clutch 5, so that the rotation is transmitted to the x-axis and the rack 15 is raised to lift the door body. Can be raised.

In addition to this, there is one in which an electromagnetic clutch is separately attached to the handlebar and the electric motor, and either one of the electromagnetic clutches is connected so that the sluice can be opened manually or electrically (Japanese Patent Application Laid-Open No. Hei 3). 235808).

[0007]

[Problems to be solved by the device]

 By the way, in the switchgear described above, since the worm gears 4 and 9 are used, the transmission efficiency is poor in both electric and manual operations, and the speed of manual operation is slow. Moreover, it is necessary to increase the output capacity of the electric motor.

Further, in the conventional opening / closing device, the device dedicated to manual operation and the device dedicated to electric / manual operation have respective unique configurations, so that parts cannot be shared, and as shown in FIG. Since the function of the differential gear box 10 is operated by the worm gears 4 and 9 on the electric side and the manual side, they cannot be separated. In addition, after installing an opening / closing device that can only be operated manually, if you change to an opening / closing device that can be operated electrically / manually, all of them must be replaced. For this reason, there are problems such as equipment arrangements and costs.

When an electromagnetic clutch is used instead of the worm gear as the self-locking mechanism, the efficiency of pulling up the door body increases, but power is required when the electromagnetic clutch is opened, and the environment for installing the floodgate makes electrification difficult. If it is in a place, this electromagnetic clutch cannot be used. Even if a diesel engine is used as the power in this case, an extra small generator must be prepared, which increases the construction cost. In addition, the frequency of opening and closing the sluice is low, and when the sluice is open for a long time, the electromagnetic clutch has a self-locking mechanism, so the clutch plate remains in close contact for a long time. Therefore, it is necessary to carry out inspection work at all times so that the clutch plate does not become detached due to idle deterioration even when electricity is applied when the sluice is closed. These replacement / inspection work cause new problems such as securing personnel.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a sluice gate opening / closing device that can be easily added or changed.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention connects a handle shaft to an input side of a descending clutch via a first self-locking mechanism, and connects an output side of the descending clutch with one input gear of a differential gear mechanism. The other input gear of the differential gear mechanism is locked to the frame, and the output of the output unit is transmitted to the rack via the reduction gear group.

On the other hand, as a structure for an opening / closing device using a drive device, an input side of a second self-lock mechanism is connected to the drive device, and an output side of the self-lock mechanism is connected to a differential gear equipped with a descending clutch. It is characterized in that it is transmitted to the rack through a mechanism.

Further, the handle shaft is connected to one of the input gears of the differential gear mechanism via the first self-locking mechanism, and the input side of the second self-locking mechanism is connected to the drive device, The output side of the mechanism is connected to the other input gear of the differential gear mechanism, and the output of the output part of the differential gear mechanism is transmitted to the rack via the reduction gear group.

The first self-locking mechanism or the second self-locking mechanism described above is a roller clutch, a screw brake, or the like having a non-electrical mechanical structure that does not have a speed reduction mechanism for the transmission shaft when torque is transmitted from the rack side. It is characterized in that it is locked by.

[0015]

[Embodiment of device]

 When the manual opening / closing device for the water gate installed in the waterway is the opening / closing device of the present invention, the structure is such that the handle shaft is connected to the descending clutch via the first self-locking mechanism, and the planetary gear mechanism is used. It is connected with the internal gear of (differential gear mechanism) to lock the sun gear. A support gear that pivotally supports the planet gears is connected to a gear that engages with the rack. When the water gate is opened, the internal gear rotates and the support gear rotates by operating the handle, and the rack is activated. During this time, the door body of the sluice becomes a load and tries to lower the door body, and its operating force tries to rotate the shaft of the first self-lock mechanism via the internal gear. However, since the shaft cannot rotate due to the first self-locking mechanism, even if the handle is released midway, the door does not descend and the handle does not rotate. In addition, the door can be lowered by the handle, and when the door enters the water, the first self-locking mechanism prevents the door from rising due to water pressure. In an emergency, the lever of the lowering clutch is operated to release the internal gear from the first self-locking mechanism to lower the door body by its own weight.

Next, a unit for a drive device is added to the above opening / closing device. First, the second self-locking mechanism connected to the electric motor is connected via the gear to the free sun gear of the planetary gear mechanism. When the rotational force from the rack is transmitted to the electric side, the rotation of the gear is stopped by the second self-locking mechanism, so that the door body does not lower naturally. From the above, when the water gate is opened, the sun gear of the planetary gear mechanism is stopped by manual operation, so normal rotation transmission is performed. Also, when operating by operating the motor, the internal gear of the planetary gear mechanism is fixed, so normal rotation transmission is performed.

Further, the first and second self-locking mechanisms have a non-electrical mechanical structure without a reduction mechanism that locks the transmission shaft with a roller clutch when transmitting the rotational force from the rack side. Alternatively, a screw brake may be used, in which a flat shaft is used in which the transmission shaft is threaded and which is inserted into the transmission shaft and screwed into the threaded screw (details will be described later).

[0018]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, an opening / closing device 1 of the present invention is provided with a handle 2 and an electric motor 3, and is unitized into a handle operating portion 20 and an electric operating portion 21, which are separated by a dotted line portion in the drawing.

In the handle operating section 20, a gear 23 is attached to a handle shaft 22, a self-locking device 24 (first self-locking mechanism), a pair of screw gears 25, a descending clutch (42, 44), a planetary gear box. The rotation is transmitted to the gear 13 via 26 (differential gear mechanism). The gear 13 is connected to the rack 15 via the reduction gear group 14, and the rack 15 is moved in the vertical direction by rotation of the gear 16 at the output end of the reduction gear group 14.

Unlike the worm gear, the self-locking device 24 has a non-electrical mechanical structure having no reduction mechanism, and is mounted on the shaft 28 of the gear 27 connected to the gear 23. The self-locking device 24 shown in FIG. 2 is a roller clutch, and the engaging end of the shaft 28 is formed with an arc-shaped trigger portion 28a and a protrusion portion 28b, and is inserted into an outer cylinder 30 fixed to a frame body 29. Has been done. An inner cylinder 31 having a flat surface 31a formed on the outer periphery is inserted inside the trigger portion 28a, and the inner cylinder 31 is further formed with a hole 31b through which the protrusion 28b is inserted. The inner cylinder 31 is connected to the output shaft 33 by a key 32. In the space surrounded by the flat surface 31a, both ends of the trigger portion 28a, and the inner wall of the outer cylinder 30, two columnar rods 34 inscribed in close proximity to the end portions of the trigger portion 28a are provided, respectively. A spring 35 is interposed between 34 and 34 so that the columnar bar 34 maintains its position without being centered.

In the self-locking device 24, when the shaft 28 on the handle side rotates, the trigger portion 28a and the protrusion 28b also rotate. For example, in the figure, when rotating clockwise, the left cylindrical rod 34 is pushed by the tip of the trigger portion, and the protrusion 28b pushes the side surface of the hole 31b, so the inner cylinder 31 rotates clockwise and the rotation is transmitted to the output shaft 33. To do. Next, in the case of transmitting from the output shaft 33 to the shaft 28, when the output shaft 33 tries to rotate right, the inner cylinder 31 rotates and the position of the flat surface 31a rotationally moves, so that the cylindrical rod 34 on the left side is rotated. Moves while rotating counterclockwise, and is wedged between the outer cylinder 30 and the inner cylinder 31 to lock the inner cylinder 31 and prevent the output shaft 33 from rotating.

A screw break (see Japanese Patent Application No. 6-280085) may be used as the mechanical self-locking mechanism having no speed reducing mechanism. In the screw brake, for example, as shown in FIG. 3, a screw 36a formed on the output shaft 36 and a screw formed in the center hole of the spur gear 37 are screwed together to face the spur gear 37 and to be free from the output shaft 36. When the input side spur gear 39 rotates, the spur gear 37 is moved by the screw 36a of the output shaft 36 and is fixed to the claw gear 38a. Rotates. When the output shaft 36 is about to rotate, the spur gear 37 moves to the pawl gear 38b side without rotating, and the pawl gear 38b is locked by the pawl b so that the output shaft 36 rotates. Block. In this way, the clutch surface is forcibly contacted and disengaged with the screw.

The output shaft 33 described above is connected to the pair of screw gears 25. The pair of screw gears 25 are formed so that their tooth shapes are inclined with respect to each other, and transmit rotation in a right angle direction. The output shaft 33 is coaxial with a lower screw gear 25 (not shown) in the drawing, and the upper screw gear 25 is inserted into a shaft 41 connected to an internal gear 40 of the planetary gearbox 26. The shaft 41 is provided with a gear 43 that communicates with the clutch movable portion 42 and the centrifugal brake 19, and a clutch receiving portion 44 is provided in the upper screw gear 25. The descending clutch consisting of the clutch movable portion 42 and the clutch receiving portion 44 is connected by a spring bias and can be disengaged by operating the lever 45.

The planetary gear box 26 includes an internal gear 40 having a tooth profile on the inner circumference, a sun gear 46 located at the center thereof, and a plurality of planetary gears 47 meshing between the internal gear 40 and the sun gear 46. A planetary gear 47 is pivotally supported and a spur gear 48 is inserted through a shaft 46a of a sun gear 46. The spur gear 48 is connected to the gear 13.

Manual operation can be performed with the configuration described above. First, the clutch movable portion 42 and the clutch receiving portion 44 are connected at the normal position of the lever 45, and the central shaft 46a of the planetary gear box 26 is locked to the frame body. When the handle 2 is rotated when the water gate is opened, the shaft 28 rotates via the gears 23 and 27, and the output shaft 33 of the self-locking device 24 rotates. As a result, the pair of screw gears 25 and the internal gear 40 of the planetary gearbox 26 rotate. Then, since the sun gear 46 does not rotate, the planet gear 47 rotates and the support gear 48 rotates and is transmitted to the gear 13. Thereafter, the reduction gear group 14 is transmitted to raise the rack 15 and the door body is pulled up. Further, since the conventional worm gear is not used for the self-locking mechanism and the mechanical self-locking device 24 having no reduction mechanism is used, the transmission efficiency is good and the operation can be performed quickly. When closing the water gate, turn the handle 2 in the opposite direction. The output shaft 33 of the self-locking device 24 also rotates in this rotation direction, and similarly lowers the rack 15. At this time, the force to lift the door body by water pressure is transmitted to the handle side through the gear 16, but the self-locking device 24 prevents the door body from rotating and thus prevents the door body from rising.

On the other hand, when closing the floodgate in an emergency, the weight of the door can be lowered by its own weight. First, when the lever 45 is operated, the clutch movable portion 42 and the clutch receiving portion 44 are separated, the self-locking device 24 is released, and the door body descends while being braked by the centrifugal brake 19. When the lever 45 is released, the clutch movable portion 42 and the clutch receiving portion 44 are fitted by the spring.

In the electric operating unit 21, a self-locking device 49 (second self-locking mechanism) coaxially installed on the gear 8 is coupled to the gear 50, and the gear 50 is coaxial with the sun gear 52 of the planetary gearbox 51. It meshes with the gear 53 that is connected to the. Further, the internal gear 54 is fixed to the frame body 29, and the bevel gear 56, which is inserted through the central shaft 52a and rotatably supports the planetary gear 55, is connected to the bevel gear 57 which is coupled to the central shaft 46a of the planetary gearbox 26. ing.

Therefore, when the electric operating portion 21 is connected to the handle operating portion 20, the first sun gear 46 is prevented from rotating by the self-locking device 49, so that the handle can be operated as it is. Further, in the electric operation, since the first internal gear 40 is locked by the self-locking device 24, the rotation of the sliding gear 56, which is the output of the electric operating section 21, is mediated by the planet gear 47 and the support gear 48. The rotation can be transmitted to the gear 13. Moreover, since the transmission efficiency of the self-locking device 49 is low, the output capacity of the electric motor can be small and the running cost can be reduced. In addition, the handle operating unit 20 and the electric operating unit 21 are independent, the handle operating unit 20 is used for the opening / closing device only for manual operation, and the handle operating unit 20 is electrically operated for the manually operated + electrically operated opening / closing device. Since the parts 21 are used in combination, the parts of the switchgear which is only manually operated and the switchgear which is manually operated + electrically operated can be shared, and the manufacturing cost can be reduced. In addition, the differential gear mechanism joins the transmission paths for manual operation and electric operation, and the self-locking devices 24 and 49 are provided on the manual operation side and the electric operation side, respectively, so switching between manual operation and electric operation is not required. is there. In addition, since it does not use an electric self-locking device, it can be used in combination with a diesel engine that does not require electricity for power, and there is a wide variety of power.

[0029]

[Effect of device]

 Since the present invention is configured as described above, it becomes easy to attach an electric operation unit to the handle operation unit of the water gate opening / closing device and change the manual opening / closing device to a manual / electric opening / closing device. There is no need to replace a complete set of electric mechanics after the installation of the manual switchgear, and the assembly work can be done easily by unitizing the parts, and the number of units can be increased or decreased, thus reducing costs. In addition, since the transmission efficiency of the self-locking device is good in electric operation, the output capacity of the electric motor can be small and running cost can be reduced. In addition, since it does not use an electric self-lock device, it can be used together with a diesel engine that does not require electricity to power it, thus providing a wide variety of power. In addition, even in manual operation, the transmission efficiency of the self-locking device is good, so that the operation can be performed quickly.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a water gate opening / closing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a self-locking structure used in the water gate opening / closing device shown in FIG.

FIG. 3 is a schematic view of another self-locking structure of the embodiment.

FIG. 4 is a schematic view showing a configuration of a conventional water gate opening / closing device.

[Explanation of symbols]

 3 Electric Motor 13 Gear 15 Rack 22 Handle Shaft 24 First Self-Locking Mechanism 26 Differential Gear Mechanism 29 Frame 40 Internal Gear 46a Central Shaft 49 Second Self-locking Mechanism

Claims (4)

[Scope of utility model registration request] 1. A differential gear mechanism in which a handle shaft is connected to an input side of a descending clutch via a first self-locking mechanism, and an output side of the descending clutch is connected to one input gear of a differential gear mechanism. The other opening and closing device for a water gate is characterized in that the other input gear is locked to the frame and the output of the output part is transmitted to the rack through the reduction gear group. 2. An input side of a second self-locking mechanism is connected to a drive device, and an output side of the self-locking mechanism is transmitted to a rack via a differential gear mechanism equipped with a descending clutch. An opening and closing device for floodgates. 3. The handle shaft is connected to one input gear of the differential gear mechanism via the first self-locking mechanism, and the input side of the second self-locking mechanism is connected to the drive unit, and the self-locking mechanism is connected. The output side of the differential gear mechanism is connected to the other input gear of the differential gear mechanism, and the output part of the differential gear mechanism is transmitted to the rack via a reduction gear group. 4. The first self-locking mechanism or the second self-locking mechanism is a roller clutch, a screw brake or the like having a non-electrical mechanical structure in which a transmission shaft when a rotational force is transmitted from the rack side does not have a speed reducing mechanism. The opening / closing device for a floodgate according to claim 1, wherein the opening / closing device is locked by the.