JPH0324522B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an automatic overturning gate installed in a waterway. The present invention relates to a means for automatically engaging a stopper with a pawl gear.

(Prior art) This is an automatic overturning gate installed in various waterways such as rivers and agricultural canals, which uses a float to detect when the water level rises to a predetermined level and automatically overturns the gate. It has been known.

This type of automatic overturning gate is constructed by connecting a gate body installed in a waterway so that it can rise and fall freely, and a pawl gear connected to an operating handle via a wire.
When the water level rises to a predetermined water level and the float floats to the surface, the stopper that is linked to the float and engages with the pawl gear is disengaged from the pawl gear, causing the door body to fall onto the riverbed due to its own weight and backwater pressure. It's getting old.

(Means to be Solved by the Invention) Conventionally, when raising a door body that has fallen down in this way, the handle is operated to raise the door body, and then the stopper is manually engaged with the pawl gear. This was designed to prevent the door body from falling over.

However, the manual operation of engaging the stopper with the pawl gear in this way is quite troublesome, as the stopper and the pawl gear are generally excreted inside a relatively small box, and it is difficult for inexperienced persons to perform the above-mentioned engagement. There were problems such as the risk of injury to hands and fingers when performing the work.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an automatic overturning gate that can automatically engage a stopper with the pawl gear when the operating handle is manually operated to erect a door body that has fallen over on a river bed. do.

(Means for Solving the Problems) The present invention provides a gate body 1 installed in a waterway so as to be able to rise and fall freely.
a pawl gear 21 that rotates in conjunction with the raising and lowering movement of the door body 1; a manual operation handle 31 that is connected to the pawl gear 21 and raises the door body 1; a stopper 23 that engages with the pawl gear 21 to prevent the pawl gear 21 from rotating in the door falling direction b due to the load received from the door body 1; a rotating member 25 to which the stopper 23 is connected; The rotating member 25 prevents the stopper 23 from rotating in the direction c in which the stopper 23 is disengaged from the pawl gear 21;
A rotation prevention member 18 that separates from the rotating member 25 in conjunction with the rise of the water level detection float 8, a second claw gear that rotates in conjunction with the claw gear 21, and this second claw gear 35. When the second pawl gear 35 is rotated in the door upright direction a by the rotational operation of the operating handle 31, the force received from the second pawl gear 35 causes
An automatic gate is constituted by an engaging member 36 that rotates the rotating member 25 in the direction d in which the stopper 23 engages with the first pawl gear 21.

(Function) In the above configuration, when the operating handle 31 is manually operated to raise the door body 1, the second pawl gear 3
5 rotates, and due to the force received from the pawl gear 35, the rotating member 25 connected to the engaging member 36 also rotates to automatically engage the stopper 23 with the first pawl gear 21, and the door body 1 prevents it from falling over due to its own weight.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Fig. 1 is a front view of an automatic overturning gate according to the present invention, and Fig. 2 is a side view, in which 1 is a gate body installed in a waterway so as to be able to rise and fall freely, and is installed between side walls 2 and 3 of the waterway. has been done. This door body 1 is pivotally supported by a rotating shaft 5 of a pedestal 4 fixed on the river bed, and rotates around the rotating shaft 5 to rise and fall. 6 is a reinforcing drum attached to the upper part of the door body 1.

Reference numeral 7 denotes a box body disposed on the side wall 2, and an automatic overturning device for automatically overturning the door body 1, which will be described in detail later, is disposed within the box body 7. Reference numeral 8 denotes a float for water level detection arranged in a space 9 formed in the side wall 2. When water from the waterway flows into the space 9 from the water inlet 10, the float 8 rises due to buoyancy and causes the above-mentioned automatic overturning. The device is activated and the door body 1 falls over.

Next, the automatic overturning device disposed inside the box 7 will be explained with reference to FIGS. 3 to 6.

In FIGS. 3 and 4, reference numeral 11 denotes a base plate attached to the inner wall surface of the box body 7, and this base plate 1
The tip of the rotating plate 12 is in contact with the upper surface of the rotating plate 1 . A long rod 13 erected on the float 8 is fitted into the rear end of the rotating plate 12 . 39 is a ring attached to the long rod 13. When the float 8 rises, the rotating plate 12 moves to the ring 39 as shown by the chain line in FIG.
It is pushed up by the ground and rotates using the grounded part as a fulcrum. 33 and 34 are retainers.

Reference numeral 15 denotes a rotating member disposed below the rotary plate 12, and its rear end is rotatably supported by a plate member 17 attached to the inner wall surface of the box body 7 through a pin 16. 18 is a rotating member 25 (described in detail later)
The lower part of the rear end is rotatably attached to the rotating member 15 by a pin 19. Further, the rear portion of the rotation preventing member 18 is connected to the rotary plate 12 via a connecting rod 20.

21 is a first pawl gear attached to the winding shaft 22, and a stopper 23 is removably engaged with this pawl gear 21. stopper 2
3 is attached to a rotating member 25 via a spring plate 24. 32 is a rotating shaft of the rotating member 25. Further, a locking portion 18a is formed on the side of the rotating member 25, and a locking portion 18a is formed at the tip of the rotation preventing member 18.
are engaged, and the rotating member 25 is rotated in the direction of arrow c by the rotational force of the pawl gear 21, and the stopper 23 is rotated.
is detached from the pawl gear 21 and prevents the door body 1 from falling over. Further, the tip end 1 of the rotation preventing member 18
8b is such that when the rotation preventing member 18 rotates to the chain line position in FIG.
It has a smooth tapered surface so that it can be smoothly removed from the 5.

When the stopper 23 is engaged with the pawl gear 21, it can be bent downward as shown by the chain line in FIG. 5 due to the flexibility of the spring plate 24. It is allowed to rotate in the direction of rolling up and standing up (in the direction of arrow a in Figure 5), but it is prevented from rotating in the direction of overturning the door body 1 due to its own weight and backwater pressure (in the direction of arrow b in Figure 5). do.

In FIG. 3, 26 is a wheel around which the winding wire 27 is wound, and sprockets 28, 2
It is connected to the winding shaft 22 through the winding shaft 9 and the chain 30, and rotates together with the winding shaft 22 to wind up or unwind the wire 27. Further, the tip of the wire 27 is attached to the door body 1 (see FIG. 2). Reference numeral 31 denotes a manual operation handle connected to the winding shaft 22, and by operating this handle 31, the pawl gear 21 is turned in the direction of arrow a, and the wire 27 is wound up, thereby raising the door body 1 which has fallen on the river bed. .

When the door body 1 is upright, the force that causes the door body 1 to fall due to its own weight and backwater pressure is transmitted through the wire 27, the chain 30, and the hoisting shaft 22.
The signal is transmitted to the pawl gear 21, and the pawl gear 21 tries to rotate in the door body falling direction b, but the rotation is prevented by the stopper 23, and the door body 1 is maintained in the upright state.

Here, when the float 8 rises and the rotating plate 12 rotates as shown by the chain line in FIG.
8 is pulled up by the connecting rod 20 in conjunction with the rise of the float 8, and the end locking portion 18 of the rotation prevention member 18 is pulled up by the connecting rod 20.
a is removed from the rotating member 25 (see the chain line in FIG. 4). Then, the rotating member 25 rotates in the direction of arrow c in FIG. 6 due to the force received from the pawl gear 21 via the stopper 23, the stopper 23 separates from the pawl gear 21, and the pawl gear 21 moves in the door body falling direction b. and the door body 1 falls over.

Reference numeral 35 denotes a second pawl gear disposed on the side of the first pawl gear 21 coaxially with the pawl gear 21, and rotates in conjunction with the pawl gear 21. Reference numeral 36 denotes an engaging member made of a spring material attached to the side end of the rotating member 25 on the side of the rotating shaft 32, and is detachably engaged with the second pawl gear 35. That is, the stopper 23 is connected to the pawl gear 2.
1 to prevent the pawl gear 21 from rotating in the overturning direction b of the door body 1, the tip of the engaging member 36 is not engaged with the second pawl gear 35. (See the solid line in Figure 6), the winding direction a of the door body 1
However, as described above, the float 8 floats up, the engaging portion 18a of the rotation preventing member 18 is disengaged from the rotating member 25, and the rotating member 25 rotates about the rotating shaft 32 in the direction of arrow c. When the door body 1 falls onto the river bed, the engaging member 36 also rotates around the rotating shaft 32, and the tip of the engaging member 36 engages with the pawl gear 35 (see the chain line in FIG. 6).

Further, when the handle 31 is operated to wind up the wire 27 and the claw gear 21 is rotated in the direction a in which the door body 1 is raised, the engagement member 36 that engages with the claw gear 35 rotating together with the claw gear 21 is rotated. , rotating shaft 32
The rotating member 25 rotates in the direction of the arrow d opposite to the direction of the arrow c, that is, in the direction of escaping from the engaged state with the pawl gear 35 to the disengaged state. The engagement member 36 automatically engages with the pawl gear 21 again to prevent the door body 1 from rotating in the falling direction.
leaves the pawl gear 35 again (see solid line in Figure 6).
In FIG. 6, 37 is a blocking member that defines the limit of rotation of the rotating member 25 in the direction of arrow c.

In this way, in this device, when the handle 31 is operated to erect the door body 1 that has fallen down on the riverbed, the rotating member 25 rotates in the direction of the arrow d to move the stopper 2
3 can be automatically engaged with the pawl gear 21.

This automatic overturning gate is constructed as described above, and the overall operation will be explained next.

Normally, the door body 1 stands up as shown by the solid line in FIG. 2 to block the waterway. In this state, the stopper 23 engages with the pawl gear 21 to prevent the pawl gear 21 from rotating and the door body 1 from falling over. Further, in this state, the engagement member 36 is connected to the second pawl gear 3.
5 is not engaged.

When the water level rises, water in the waterway enters the space 9 through the water inlet 10, and the float 8 rises due to buoyancy.
Then, the long rod 13 rises and the rotating plate 12 rotates to the position indicated by the chain line in FIG. Then, the rotation prevention member 18 is pulled up by the connecting rod 20, and the rotation prevention member 18 is pulled up by the connecting rod 20.
The locking portion 18a is released from the rotating member 25.

Then, the rotating member 25 rotates in the direction of arrow c due to the rotational force of the pawl gear 21, and the stopper 23 is disengaged from the pawl gear 21. Then, the pawl gear 21 becomes in a state where it can rotate in the door body falling direction b, and the door body 1 falls due to the rotational moment due to its own weight and the action of backwater pressure, opening the water channel (see the chain line in FIG. 2). In this state, the tip of the engaging member 36 engages with the second pawl gear 35 as described above.

Also, when raising the door body 1, use the handle 31
Wind up the wire 27 by rotating the claw gear 2.
1 and 35 in the direction of arrow a, the door body 1 is pulled up by the wire 27 and stands up. that time,
Since the distal end of the engagement member 36 is engaged with the claw gear 35, the claw gear 3 rotates integrally with the claw gear 21.
5 rotates in the direction d to escape from the engagement with the pawl gear 35. Therefore, the rotating member 25 also rotates in the direction of the arrow d about the rotating shaft 32, and the stopper 23 automatically disengages from the pawl gear 35. 21, the pawl gear 21 is prevented from rotating in the direction of arrow b, causing the door body 1, which has been made to stand up, to fall over unnecessarily.

The present invention can be modified in various ways other than the above-described embodiments. For example, the rotating member 25 is formed of a single plate-shaped body, and a stopper 2 is attached to the rotary member 25.
3 and the engaging member 36 are attached, but the shape and structure of the rotating member is not limited to this. For example, the rotating member may be constructed from a plurality of members and a stopper or the like may be attached to each member. In short, it is sufficient that the stopper 23 can be automatically engaged with the pawl gear 21 when the operating handle 31 is operated to raise the door body 1.
Furthermore, both claw gears 21 and 35 may be integrally formed.

(Effects of the Invention) As explained above, according to the present invention, the stopper 23 is automatically engaged with the pawl gear 21 when the operating handle 31 is operated to raise the door body 1 that has fallen down on the riverbed. Therefore, it is easy to handle, and there is no need to manually engage the stopper 23 with the pawl gear 21 as in the conventional means, which is advantageous from a safety standpoint.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a front view of the automatic overturning gate, the second figure is a side view,
FIG. 3 is a perspective view of the automatic overturning device, FIGS. 4 and 5 are partial side views, and FIG. 6 is a partial plan view. 1... Door body, 8... Float for water level detection, 18...
Rotation prevention member, 21...first pawl gear, 23...
Stopper, 25... Rotating member, 31... Operating handle, 35... Second pawl gear, 36... Engaging member.

Claims (1)

[Claims] 1. A gate body 1 installed in a waterway so that it can be raised and lowered, and a pawl gear 21 that rotates in conjunction with the raising and lowering movement of this gate body 1.
A manual operation handle 31 is connected to the pawl gear 21 to raise the door body 1; A stopper 23 that prevents the door body from rotating in the overturning direction b; a rotating member 25 to which this stopper 23 is connected; and a rotating member 25 that is removably engaged with the rotating member 25. is prevented from rotating in the direction c in which it separates from the pawl gear 21,
A rotation prevention member 18 that separates from the rotating member 25 in conjunction with the rise of the water level detection float 8, a second claw gear that rotates in conjunction with the claw gear 21, and this second claw gear 35. When the second pawl gear 35 is rotated in the door upright direction a by the rotational operation of the operating handle 31, the force received from the second pawl gear 35 causes
and an engaging member 36 that rotates the rotating member 25 in a direction d in which the stopper 23 engages with the first pawl gear 21.