JP6244441B2 - Sluice opener - Google Patents

Description

The present invention relates to a sluice gate opening and closing device for raising and lowering a sluice door body.

A sluice gate opening / closing device is installed in a sluice such as a waterway or a river to rotate a sprocket to wind up a chain and raise a door connected to the chain. Patent Documents 1 and 2 describe specific examples of a sluice gate opening / closing device provided with a mechanism for supporting a chain by providing a plurality of hanging regions on the wound chain. By supporting the chain in such a manner, it is not necessary to connect a counterbalance to the chain, and the sluice device as a whole can be made compact.
The sluice gate opening and closing device described in Patent Document 2 is arranged at a position higher than the sprocket for the purpose of improving the maintenance of the mechanism that supports the chain. This is because the sluice opening and closing device conventionally secures a working space for the worker at a position higher than the support base that supports the housing to which the sprocket is attached.

Japanese Patent Laid-Open No. 9-31949 JP 2005-188058 A

However, Patent Document 2 does not employ a mechanism that stably guides the chain with respect to the mechanism that supports the wound chain, and the chain is slackened in the region between the sprocket and the mechanism that supports the chain. There was a problem that occurred.
The present invention has been made in view of such circumstances, and an object thereof is to provide a sluice gate opening / closing device capable of stably guiding a chain to a mechanism that supports the chain.

The sluice gate opening and closing device according to the present invention that meets the above-described object hoists the chain by rotating the first drive sprocket, and raises the door connected to one end of the chain directly below the first drive sprocket. In the sluice gate opening and closing device, the chain is provided with a plurality of locking portions at intervals in the longitudinal direction of the chain, and is arranged at a position higher than the first drive sprocket, and the other end of the chain is attached to the chain A chain supporting means for supporting the chain in a state where each of the locking portions is suspended and the respective regions between the locking portions are suspended, and is disposed at a position higher than the first drive sprocket, A second driven sprocket for hanging the chain and guiding the chain to the chain support means, and a second rotating at the same angular velocity as the first drive sprocket. A drive sprocket, a second driven sprocket that rotates at the same angular velocity as the first driven sprocket, and an endless chain that spans the second driven sprocket and the second driven sprocket. The ratio of the number of teeth of the first driven sprocket to the number of teeth of the second driven sprocket is equal to the ratio of the number of teeth of the second driven sprocket to the number of teeth of the second driven sprocket.

In the sluice gate opening and closing apparatus according to the present invention, the number of teeth of the first drive sprocket and the number of teeth of the first driven sprocket are equal, and the number of teeth of the second drive sprocket and the number of teeth of the second driven sprocket. Are preferably equal.

In the sluice gate opening and closing apparatus according to the present invention, the first and second drive sprockets are attached to a common rotating shaft A, and the first and second driven sprockets are attached to a common rotating shaft B. preferable.

In the sluice gate opening and closing apparatus according to the present invention, the first driven sprocket is disposed at a position higher than the second drive sprocket, and the second driven sprocket is positioned higher than the first and second drive sprockets. May be arranged.

The sluice gate opening and closing device according to the present invention includes a second drive sprocket that rotates at the same angular velocity as the first drive sprocket, a second driven sprocket that rotates at the same angular velocity as the first driven sprocket, and a second drive sprocket. And an endless chain spanned over the second driven sprocket, wherein the ratio of the number of teeth of the first driven sprocket to the number of teeth of the first driven sprocket is equal to the second number of teeth of the second driven sprocket. Since it is equal to the ratio of the number of teeth of the driven sprocket, the amount of hoisting that the first drive sprocket winds up the chain per unit time and the amount of guide of the chain that the first driven sprocket guides to the chain support member per unit time are equal. It is possible to stably guide the chain to the chain support member.

It is explanatory drawing of the sluice gate opening and closing apparatus which concerns on one embodiment of this invention. It is explanatory drawing of the sluice gate opening and closing device. It is explanatory drawing of the chain of the sluice gate opening and closing device.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 and 2, the sluice gate opening and closing device 10 according to the embodiment of the present invention winds up the chain 12 by the rotational drive of the first drive sprocket 11 (first drive sprocket), It is a device that raises the door D connected to one end directly below the first drive sprocket 11. Details will be described below.

As shown in FIGS. 1 and 2, the sluice gate opening and closing device 10 includes a support base 14 fixed to the base portion 13, a housing 15 placed on the support base 14, an electric motor 16 attached to the housing 15, and A manual handle 17, a chain 12 having one end connected to the door body D, and a first drive sprocket 11 on which the chain 12 is hung (locked) are provided. A power transmission mechanism 18 for transmitting the driving force of the electric motor 16 or the rotational force of the manual handle 17 to the first driving sprocket 11 is provided in the housing 15.

The power transmission mechanism 18 includes a plurality of members such as a gear, a worm gear, and a rotation shaft 19 (rotation shaft A) (not shown). In FIG. 2, a part of the housing 15 is not shown.
The rotating shaft 19 is disposed horizontally within the housing 15, and the first drive sprocket 11 is attached to the rotating shaft 19. In the present embodiment, the first drive sprocket 11 is fixed to the rotation shaft 19 with the rotation shaft 19 penetrating the center of the first drive sprocket 11. The rotating shaft 19 and the first drive sprocket 11 are driven to rotate by the operation of the electric motor 16.

The manual handle 17 can be connected to the power transmission mechanism 18, and when the electric motor 16 does not operate due to a power failure or the like, the worker turns the manual handle 17 connected to the power transmission mechanism 18 to rotate the rotary shaft 19 and The first drive sprocket 11 can be rotated.
As shown in FIG. 3, the chain 12 hung on the first drive sprocket 11 includes a plurality of connecting pins 20 arranged in parallel in the longitudinal direction of the chain 12 and a large number of plate members 21. Yes.

Each plate member 21 is long along the longitudinal direction of the chain 12, and both end portions are rotatably attached to the two connecting pins 20. Each connecting pin 20 is provided with plate material mounting regions 22, 23, 24 to which a plurality of plate materials 21 are attached in close contact with one side, the center, and the other side, respectively, between the plate material mounting regions 22, 23, In addition, plate material non-mounting regions 25 and 26 to which the plate material 21 is not attached are provided between the plate material mounting regions 23 and 24.

As shown in FIG. 2, the first drive sprocket 11 includes a plurality of tooth portions 27 on the outer periphery on one axial side of the first drive sprocket 11, and a plurality of teeth on the outer periphery on the other axial side of the first drive sprocket 11. A tooth portion 28 is provided. In the chain 12, tooth portions 27 are inserted between the plate material non-mounting regions 25 of the connecting pins 20 adjacent in the longitudinal direction, and the tooth portions 28 are interposed between the plate material non-mounting regions 26 of the connecting pins 20 adjacent in the longitudinal direction. Is inserted into the first drive sprocket 11. The number of teeth 27 and 28 is the same.

As shown in FIG. 3, wheels 29 and 29 a are rotatably mounted at both ends of the connection pin 20 in a predetermined range from the other end of the chain 12 at a ratio of one to a predetermined number of connection pins 20. Yes. In the present embodiment, a pair of wheels 29 and 29a mounted mainly on one connecting pin 20 constitutes one locking portion 30 (that is, the chain 12 has a longitudinal direction of the chain 12). A plurality of locking portions 30 are provided at intervals).

Moreover, as shown in FIGS. 1 and 2, the sluice gate opening and closing device 10 is a pair of rails 31 and 32 to which the other end of the chain 12 is attached, and a pair to which the rails 31 and 32 are fixed. Support members 33, 34, a horizontal rotation shaft 35 (rotation shaft B) rotatably attached to the support members 33, 34, and a first driven sprocket 36 (attached to the horizontal rotation shaft 35 and on which the chain 12 is hung. A first driven sprocket).

The rails 31 and 32, the support members 33 and 34, the horizontal rotation shaft 35, and the first driven sprocket 36 are located obliquely above the first drive sprocket 11, and the rails 31 and 32 are arranged in parallel. The long support members 33 and 34 are fixed to a column member 36 a erected on the base portion 13 and arranged in parallel.
As shown in FIG. 1, a plurality of receptacles 37 to which the wheels 29 and 29 a (that is, the locking portions 30) that are paired with the chain 12 are hooked are attached to the rails 31 and 32. In the present embodiment, the chain support means 38 is mainly constituted by the rails 31 and 32 and the plurality of receivers 37.
As shown in FIGS. 1 and 2, the first driven sprocket 36 is provided between the support members 33 and 34.

As shown in FIG. 1, the chain support means 38 supports the chain 12 in a state in which each locking portion 30 is hooked on each receiving member 37 and each region between the locking portions 30 hangs down.
The chain 12 is hung on the first driven sprocket 36 in order from the region supported by the chain support means 38 toward one side, and is hung on guide rollers 39 and 40 provided obliquely below the first drive sprocket 11. It is hung on the first drive sprocket 11.
The chain 12 is in a state where there is no slack in the region between the first drive sprocket 11 and the first driven sprocket 36, and the region between the first drive sprocket 11 and one end connected to the door body D is the door body. It is stretched vertically by its own weight.

As shown in FIG. 2, the first driven sprocket 36 includes a plurality of tooth portions 41 that can be inserted between the plate material non-mounting regions 25 of the connecting pins 20 adjacent to each other in the longitudinal direction of the chain 12, and the longitudinal direction of the chain 12. A plurality of tooth portions 42 that can be inserted between the plate material non-mounting regions 26 of the connecting pins 20 adjacent to each other are provided on the outer periphery. The number of teeth 41 and 42 is the same.
The chain 12 is hung on the first driven sprocket 36 in the same state as that for the first drive sprocket 11. The first driven sprocket 36 is fixed to the horizontal rotation shaft 35 with the center penetrating the horizontal rotation shaft 35.

One end of the horizontal rotating shaft 35 protrudes from the support member 33, and a second driven sprocket 44 (second driven sprocket) is attached to the protruding portion. The second driven sprocket 44 has a plurality of tooth portions 45 on the outer periphery, and the center is fixed to one end portion of the horizontal rotation shaft 35. Therefore, the first driven sprocket 36 and the second driven sprocket 44 are attached to the common horizontal rotating shaft 35, and the second driven sprocket 44 rotates at the same angular velocity as the first driven sprocket 36.

The center of a second drive sprocket 47 (second drive sprocket) having a plurality of teeth 46 on the outer periphery is fixed to one end of the rotating shaft 19. The second drive sprocket 47 is rotationally driven together with the first drive sprocket 11 when the driving force of the electric motor 16 is transmitted from the rotary shaft 19. Therefore, the first drive sprocket 11 and the second drive sprocket 47 are attached to the common rotating shaft 19, and the second drive sprocket 47 rotates at the same angular velocity as the first drive sprocket 11.

As shown in FIG. 1, the first driven sprocket 36 and the second driven sprocket 44 are disposed obliquely above the first driving sprocket 11 and the second driving sprocket 47. That is, the first driven sprocket 36 and the second driven sprocket 44 are arranged at a higher position than the first driving sprocket 11 and the second driving sprocket 47.
As shown in FIGS. 1 and 2, an endless chain 48 is stretched over the second driven sprocket 44 and the second drive sprocket 47. The endless chain 48 is locked to the tooth portion 45 of the second driven sprocket 44 and the tooth portion 46 of the second drive sprocket 47, and can transmit the rotational force of the second drive sprocket 47 to the second driven sprocket 44. .

When the electric motor 16 is operated and the first drive sprocket 11, the second drive sprocket 47, and the rotating shaft 19 are integrally driven and rotated, the driving rotational force of the second drive sprocket 47 is transmitted via the endless chain 48. The first driven sprocket 36, the second driven sprocket 44, and the horizontal rotation shaft 35 are integrally rotated by being transmitted to the second driven sprocket 44.
The electric motor 16 can drive and rotate the first drive sprocket 11 and the second drive sprocket 47 in one direction (for example, clockwise) and the other direction (for example, counterclockwise) together with the rotary shaft 19.

The first drive sprocket 11 drives and rotates in one direction to wind up the chain 12 and raise the door body D. When the first driven sprocket 11 rotates in the direction to wind up the chain 12, the first driven sprocket 11 rotates in the direction to supply the chain 12 wound up by the first driving sprocket 11 to the chain support means 38 to support the chain. The chain 12 is guided to the means 38. Since the first driven sprocket 36 is arranged at a position higher than the first drive sprocket 11, the chain 12 wound up by the first drive sprocket 11 is positioned higher than the first drive sprocket 11 by the first driven sprocket 36. After being wound up, the chain support means 38 is guided.

And the 1st drive sprocket 11 sends out the chain 12 by rotating in another direction, giving resistance to the chain 12, and lowers the door body D by the dead weight of the door body D. When the first drive sprocket 11 rotates in the direction of sending out the chain 12, the first driven sprocket 36 rotates in the direction of sending out the chain 12 supported by the chain support means 38 from the chain support means 38.

The support member 33 is formed with two notches 33a and 33b with a space therebetween, and the support member 34 has two notches 34a with a space at a position facing the pair of notches 33a and 33b. 34b is formed. The notch 33a is located closer to the housing 15 than the notch 33b, and the notch 34a is located closer to the housing 15 than the notch 34b. The notches 33a and 34a are provided from the upper end to the lower end of the support members 33 and 34, respectively, and are sent out from the chain support means 38 when the chain 12 is guided to the chain support means 38 by the first driven sprocket 36. In this case, the wheels 29 and 29 a are provided so as not to contact the support members 33 and 34. On the other hand, the notches 33b and 34b are provided from the upper ends of the support members 33 and 34 to the middle in the vertical direction, respectively, and when the chain 12 is fed from the chain support means 38 by the first driven sprocket 36, The wheels 29, 29 a are in a state of being folded by hitting from below the portion where the cutout 33 b of the support member 33 is formed and the portion where the cutout 34 b of the support member 34 is formed.

Here, the number of teeth 27 and 28 of the first drive sprocket 11 (the number of teeth) is equal to the number of teeth 41 and 42 of the first driven sprocket 36 (the number of teeth), and the teeth of the second drive sprocket 47 are the same. The number of teeth 46 (number of teeth) is equal to the number of teeth 45 (number of teeth) of the second driven sprocket 44. Therefore, when the door body D is raised and when the door body D is lowered, the first drive sprocket 11, the second drive sprocket 47, the first driven sprocket 36, and the second driven sprocket 44 rotate at the same angular velocity.

Therefore, the length by which the first drive sprocket 11 winds the chain 12 per unit time is equal to the length by which the first driven sprocket 36 supplies the chain 12 to the chain support means 38 per unit time. The length at which the chain 12 is sent out per unit time is equal to the length at which the first driven sprocket 36 sends out the chain 12 from the chain support means 38 per unit time.

Therefore, when the door body D is raised and when the door body D is lowered, the length of the region of the chain 12 from the first drive sprocket 11 to the first driven sprocket 36 is kept constant. The state where the area is not slack is maintained.
In the present embodiment, the diameter of the first drive sprocket 11 and the diameter of the first driven sprocket 36 are the same, and the diameter of the second drive sprocket 47 and the diameter of the second driven sprocket 44 are the same. is there.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, if the length by which the first drive sprocket winds the chain per unit time and the length by which the first driven sprocket supplies the chain to the chain support means per unit time are equal, the number of teeth of the first drive sprocket And the number of teeth of the first driven sprocket may be different, and the number of teeth of the second driven sprocket and the number of teeth of the second driven sprocket may be different. By making the ratio of the number of teeth of the first driven sprocket to the number of teeth of the first drive sprocket equal to the ratio of the number of teeth of the second driven sprocket to the number of teeth of the second drive sprocket, the first drive It is possible to make the length that the sprocket winds the chain per unit time equal to the length that the first driven sprocket supplies the chain to the chain support means per unit time.

The first and second drive sprockets only need to be able to rotate at the same angular velocity, and need not be attached to a common rotating shaft, and the first and second driven sprockets only need to be able to rotate at the same angular velocity. It is not necessary to be attached to the rotating shaft. An example of a design that rotates at the same angular speed without attaching the first and second drive sprockets to a common rotating shaft is to use gears that mesh with the first and second drive sprockets. The same applies to the first and second driven sprockets.
The first and second driven sprockets do not need to be arranged higher than the first and second drive sprockets.

10: sluice switch, 11: first drive sprocket, 12: chain, 13: foundation, 14: support base, 15: housing, 16: electric motor, 17: manual handle, 18: power transmission mechanism, 19: rotation Axis, 20: connecting pin, 21: plate material, 22, 23, 24: plate material mounting region, 25, 26: plate material non-mounting region, 27, 28: tooth portion, 29, 29a: wheel, 30: locking portion, 31 , 32: rail, 33: support member, 33a, 33b: notch, 34: support member, 34a, 34b: notch, 35: horizontal rotation shaft, 36: first driven sprocket, 36a: strut material, 37: support 38, chain support means, 39, 40: guide rollers, 41, 42: teeth, 44: second driven sprocket, 45, 46: teeth, 47: second drive sprocket, 48: endless chain, D: door

Claims (4)

In a sluice gate opening and closing device that winds up a chain by rotational driving of a first drive sprocket and raises a door connected to one end of the chain directly below the first drive sprocket,
The chain is provided with a plurality of locking portions at intervals in the longitudinal direction of the chain,
Arranged at a higher position than the first drive sprocket, the other end of the chain is attached, and each of the locking portions is hooked to support the chain in a state where each region between the locking portions hangs down. Chain support means to perform,
A first driven sprocket disposed at a position higher than the first drive sprocket, the chain being hung, and guiding the chain to the chain support means;
A second drive sprocket that rotates at the same angular velocity as the first drive sprocket;
A second driven sprocket rotating at the same angular velocity as the first driven sprocket;
An endless chain spanned over the second drive sprocket and the second driven sprocket,
The ratio of the number of teeth of the first driven sprocket to the number of teeth of the first drive sprocket is equal to the ratio of the number of teeth of the second driven sprocket to the number of teeth of the second drive sprocket. A sluice opening and closing device. 2. The sluice gate opening and closing device according to claim 1, wherein the number of teeth of the first drive sprocket is equal to the number of teeth of the first driven sprocket, and the number of teeth of the second drive sprocket and the teeth of the second driven sprocket are set. A sluice opening and closing device characterized by equal numbers. 3. The sluice gate opening and closing device according to claim 1, wherein the first and second drive sprockets are attached to a common rotating shaft A, and the first and second driven sprockets are attached to a common rotating shaft B. A sluice gate opening and closing device. 4. The sluice gate opening and closing device according to claim 3, wherein the first driven sprocket is disposed at a position higher than the second drive sprocket, and the second driven sprocket is higher than the first and second drive sprockets. A sluice gate opening and closing device characterized by being arranged at a position.

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