JPS6323458Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire drum winding type opening gauge for a hinge type gate in a dam or the like.

As shown in Fig. 1, the conventional opening degree meter for hinge type gates has a roller c attached to the gate body a,
When the roller c is brought into contact with the sliding surface at the tip of the openness meter b and the gate body a is opened to the opening degree H, the shaft e is pushed up by the roller c and is slidably moved by the guide d. A pinion g is rotated by a rack f provided at the upper end of the held shaft e, and the opening degree H of the gate body a is determined from the rotational speed of the pinion g.

However, in this case, although the rotation speed of pinion g and the opening degree H of gate body a are proportional, the structure is complicated and the mounting position is greatly restricted. is required.

The present invention aims to eliminate the above-mentioned problems with the opening angle meter for the conventional hinge type gate, and the opening angle of the gate body is proportional to the rotation angle of the drum that winds the mesh wire pulled out from the gate body. By using a drum of this type, the opening degree of the gate body is proportional to the rotation angle of the drum, and the opening degree can be directly determined by detecting the rotation angle of the drum. It is.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 shows an embodiment of the present invention, in which a radial gate 2 that rotates around a pin 3 opens and closes in a flow path 1, and a wire 5 is connected to a bracket 4 provided at the top of the radial gate 2. The other end of the wire 5 is connected to the outer periphery of the drum 7 via a sheave 6 provided at a predetermined position.

The drum 7 is biased by a spring or the like to such an extent that the wire 5 can be wound up when the wire 5 is slack, and the wire 5 can be paid out when the wire 5 is pulled.
The shape is such that when the opening degree of the radial gate 2 reaches H, the winding diameter changes so that the rotation angle θ of the drum 7, which winds the slack wire 5, is proportional to the opening degree H. In the figure, 8 is a cylinder for opening and closing the radial gate 2.

Next, a specific example for determining the shape of the drum 7 will be explained.

The total lift height H _T of the radial gate 2 is divided into n equal parts by ΔH, and the total rotation angle θ _T of the drum 7 is divided into n equal parts by ΔH.
If the rotation angle θ of the drum 7 is always increased by Δθ every time the opening degree H of the radial gate 2 is increased by ΔH, a drum having an appropriate shape can be obtained.

In FIG. 2, the relationship between the opening degree H of the radial gate 2 and the amount S of the wire 5 passing through point B where the sheave 6 is provided is a curve as shown in FIG.

Also, as shown in Fig. 4, the initial radius of the drum 7 is
The amount of passage Δl of the wire 5 passing through point B when R ₀ is moved by Δθ is determined, and the initial radius R ₀ is determined so that the amount of passage Δl becomes ΔlΔS ₁ . Similarly, assume a radius R ₁ that forms an angle Δθ with the initial radius R ₀ and rotate it by Δθ. At this time, if ΔlΔS ₂ , R ₁ is set as the next radius after R ₀ , and the radius of the drum 7 is sequentially determined in this manner. As shown in FIG. 5, the triangle formed by R _n+1 and Rm is moved by Δθ and the wire 5 is wound up. At that time, find the passing amount Δl of the wire 5 passing through point B,
It is sufficient to find R _n+1 such that this becomes ΔlΔS _l+1 . In this way, the rotation radius R _n+1 of the drum 7 corresponding to ΔS _l+1 is determined.
In this way, the next rotation radius is determined, and the drum 7
By repeating this process until the rotation angle becomes θ _T , the shape of the drum 7 can be obtained as an approximate polygon as shown in FIG. If the number of divisions n is increased, a practically sufficient drum shape can be obtained.

With the above configuration, radial gate 2
When is fully closed, the angle between the longest radius of the drum 7, that is, the initial radius _R0 , and the horizontal line, that is, the rotation angle θ, is 0°, and the radial gate 2 is opened by the cylinder 8, and the opening degree is H. When the wire 5 becomes loose, it is wound around the drum 7 which is biased in the winding direction by a spring or the like, and the drum 7 rotates by θ. The drum 7
Since the winding diameter changes, the rotation angle θ is proportional to the opening degree H. Therefore, by detecting the rotation angle θ of the drum 7, the opening degree H of the radial gate 2 can be directly determined.

FIG. 7 shows another embodiment of the present invention, in which a connecting rod 9 is pivotally attached to a bracket 4 provided on the upper part of a radial gate 2 for opening and closing a flow path 1, and the other end of the connecting rod 9 is guide rail 10
A crosshead 11 that slides along the crosshead 11 is provided, a wire 5 is connected to the crosshead 11, and the wire 5
The other end is connected to the drum 7 as in the previous embodiment. In FIG. 3, the same reference numerals as in FIG. 2 represent the same components.

In this embodiment, as in the previous embodiment, the drum 7 rotates in proportion to the opening degree of the radial gate 2, so the opening degree H of the radial gate can be determined from the rotation angle θ of the drum 7.

In the above embodiment, when the cylinder 8 closes the radial gate 2 to reduce the opening H, the drum 7 rotates in the opposite direction and the wire 5 is fed out.
The rotation angle θ of the drum 7 decreases proportionally.

The opening gauge for hinge-type gates of the present invention is not limited to the above-mentioned embodiments, but can also be used for hinge-type gates other than radial gates, such as flap gates, drum gates, and sector gates. Of course, various changes may be made without departing from the spirit of the invention.

As described above, the hinge type gate opening meter of the present invention uses a drum shaped such that the opening of the gate body is proportional to the rotation angle of the drum that winds the wire pulled out from the gate body. ,
The opening degree of the gate body and the rotation angle of the drum are proportional,
The opening degree of the gate body can be directly determined by detecting the rotation angle of the drum, and the structure is simpler than conventional mechanical opening gauges, and the wire can be connected to any movable part of the gate. It exhibits various excellent effects such as being flexible in the installation position, such as being able to install the device in an appropriate location depending on the structure of the gate equipment.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of an example of a conventional opening degree meter for a hinge type gate, Figure 2 is an explanatory diagram of an example of the opening degree meter of the present invention, and Figures 3 to 6 are illustrations of an example of the opening degree meter of the present invention. An explanatory diagram for determining the shape of a drum used in a degree meter. Figure 3 is a diagram showing the relationship between the rotation angle of the drum and the wire passing amount, and Figure 4 is an explanatory diagram of a method for determining the initial radius of the drum. FIG. 5 is an explanatory diagram of a method for determining an intermediate drum radius, FIG. 6 is an explanatory diagram of a drum approximated by a polygon, and FIG. 7 is an explanatory diagram of another embodiment of the opening degree meter of the present invention. In the figure, 2 is a radial gate, 5 is a wire, 7 is a drum, 9 is a connecting rod, 10 is a guide rail, and 11 is a crosshead.

Claims (1)

[Scope of utility model registration request] The other end of the wire connected to the gate body is connected to a drum having a shape such that the opening degree of the gate body is proportional to the rotation angle of a drum that rotates while winding the wire, and the drum is wound with the wire using a spring. A hinge-type gate opening gauge which is biased in the removal direction and further includes a drum rotation angle detector.