JP3007941U - Watertight rubber for sluice - Google Patents

Abstract

(57) [Summary] [Purpose] In a floodgate that is installed in a river or irrigation canal to stop or flush the flow of water, the gap between the door metal fixture fixed to concrete and the door operated by a switch. It relates to a watertight rubber used to prevent water from leaking out. [Structure] The dimensions of the part of the watertight rubber head that makes watertight contact with the door fitting, and the surface of the mounting part on the side of the holding metal, the thickness of the holding metal, the thickness of the head of the mounting bolt, and the watertight rubber. The fitting allowance of the watertight rubber and the fitting allowance of the watertight rubber on the door side of the mounting part and the clearance necessary for bending deformation for fitting the head corresponding to the sufficient allowance It is characterized in that a pedestal-like protrusion is provided to secure a space.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In this invention, water leaks from the gap between the door fittings fixed to the concrete and the door body operated by the opening / closing mechanism in the floodgate used to stop or flow the water in a river or irrigation canal. It is related to the watertight rubber used to prevent spillage.

[0002]

[Prior art]

 In the case of a water gate that is watertight on all four sides, that is, in the case where watertightness is formed on the top, bottom, left, and right sides of the surface that is pressed against the door fitting by the main water pressure of the door, Conventionally, a watertight rubber having a circular protrusion provided on one side of a mounting portion, which is called P rubber, is used, and a structure as shown in FIGS. 2 and 3 is adopted.

That is, as shown in FIG. 2, the water pressure acting on the door body pushes the P-rubber circular protrusion 21 (head) against the door fitting 22 to compressively deform the P-rubber circular protrusion 21. What forms a.

Alternatively, as shown in FIG. 3, by providing the pressure bearing sliding member 23 and the P rubber mounting base 24 on the door body, the circular protrusion 21 of the P rubber is pressed against the door fitting 22 by the water pressure acting on the door body. For example, a P-rubber circular protrusion 21 and a door fitting 22 that continuously form a watertight line due to bending deformation of the P-rubber neck portion 25 when they are attached are adopted.

[0005]

[Problems to be solved by the device]

 However, there are various problems in the structure of the watertight part of the floodgate.

That is, in the structure of FIG. 2, although the structure is simple, the force required for compressively deforming the circular protrusion 21 of P rubber is large, and the force is small due to a slight dimensional error. Considering safety, it is assumed that the total water pressure acting on the door or a force of about 500 kgf per 1 m of the length of the watertight line is acting because the size varies greatly. Multiply by 0.7 to find the frictional force needed to open and close the door.

This is not only very disadvantageous because the switchgear is large and expensive as compared with a structure in which a metal having a coefficient of friction of 0.4 is used to slide between metals, but it is also disadvantageous. Assuming that the compression deformation of the circular protrusion 21 shifts from elastic deformation to plastic deformation and the surface of the pressing metal 27 supports water pressure or other external force acting on the door body, the mounting bolt is the countersunk bolt 28. It took a lot of time and labor to process 27, which also caused a disadvantage.

Further, in the case of FIG. 3, by providing the pressure bearing sliding body 23 and the P rubber mounting base 24 on the door body, the circular protrusion 21 of the P rubber is pressed against the door fitting 22 by the water pressure acting on the door body. When attached, a bending deformation of the neck portion 25 of the P rubber and a stress due to the deformation continuously form a watertight line, so the force required for bending deformation of the rubber per 1 m of the watertight line is 25 kgf to 100 kgf. Since this change is small due to a slight dimensional error of the watertight rubber, the pressing force acting on the contact portion between the watertight rubber and the door fitting is small and stable. Most of the water pressure acting on the door is transmitted from the bearing slide 23 to the door fitting 22, so that the coefficient of friction is small, and therefore the frictional force required to open and close the door is small. This makes the switchgear relatively small and economical.

On the other hand, however, it is necessary to provide the pressure bearing sliding body 23 and the P rubber mounting base 24, which requires a lot of labor for mounting, and the disadvantage of increasing the processing labor of the entire door body such as correction of distortion caused by welding. Is occurring. Since the idea of using P rubber has not changed, a flat head bolt 27 is used to attach the P rubber to the P rubber and the P rubber mount 24 of the door body by the presser foot 26. Therefore, it takes a lot of labor to process the presser foot 26, which is also a cause of disadvantage.

Therefore, in the watertight rubber for a floodgate of the present invention, in order to solve the above-mentioned problems, by using a watertight rubber having a rational shape in which the function is emphasized, the processing time is reduced and the welding is performed. It aims to provide an economical sluice door with little distortion.

[0011]

[Means for Solving the Problems]

 That is, the watertight rubber for a floodgate of the present invention is such that the dimensions of the portion of the head of the watertight rubber that makes watertight contact with the door fitting and the surface of the mounting portion on the side of the holding metal, the thickness of the holding metal and the mounting bolt The thickness of the head and the fitting margin of the watertight rubber, and a size with a slight margin added, and at the same time, the fitting margin of the watertight rubber on the door side of the mounting part and the head conforming to the sufficient margin dimension. It is characterized in that a pedestal-like protrusion is provided to secure an escape space required for bending deformation of the.

[0012]

[Action]

 According to the structure of the watertight part for the water gate of this invention, the force required to deform the watertight rubber by the amount equivalent to the running-in margin is a small value, and the change due to dimensional error is small, so the watertight when the door is opened and closed. The frictional force generated between rubber and door metal fittings is small, and it is not only economical that the switch can be made relatively small, but also the material of the part where the watertight rubber is attached and the time and labor of welding process. Therefore, the water-tight portion of the door can be economically manufactured with less welding distortion.

[0013]

【Example】

 An embodiment of the watertight rubber for a floodgate according to the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a door gate metal fitting, 2 is a watertight rubber head, 3 is its neck, 4 is a surface which comes into contact with the presser foot, 5 is a pedestal projection of its mounting portion, and 6 is mounting Reference numeral 7 is a bolt, 7 is a retainer, 8 is a skin plate of the door, 9 is a girder material of the door, and 10 is a bearing sliding material.

When the door body is pressed against the door fitting 1 by the water pressure, it is the bearing sliding member 10 that contacts the door fitting 1 while supporting most of the water pressure, and the door fitting 1 and the skin plate 1 are in contact with each other. A space corresponding to the height h of the bearing slide member 10 is secured between the seat 8 and the seat 8.

Since the height H of the watertight rubber attached to this space is larger than the above-mentioned interval h by an appropriate amount, the watertight rubber is deformed by (H−h) like a chain line, and the stress causes the head 2 to move to the door. The watertight line is formed by being pressed against the metal member 1 and continuously contacting the metal member 1.

At this time, most of the deformation that occurs in the watertight rubber is the bending deformation of the neck portion 3, so the contact force between the head portion 2 and the door fitting 1 due to the deformation stress is not so large (the length of the rubber is 1 m). (About 25 kgf to 100 kgf), and the amount of change in the contact force due to the change in the running-in margin (H-h) due to the size error of the size H or h is small. At this time, the head 2 and the neck 3 of the watertight rubber are sufficiently separated from the skin plate 8 by the dimension a because the pedestal-like protrusion 5 of the mounting portion is projected, so that the neck 3 is not bent and deformed. There is nothing to prevent.

Further, when the watertight rubber is not subjected to an external force, the dimension b between the contact portion of the head 2 with the door retainer 1 and the surface 4 of the mounting portion that contacts the retainer 7 is the thickness c of the retainer 7, It is the sum of the head thickness d of the mounting bolt 6, the allowance e, and the running-in margin (H-h), and there is no risk of damage to the mounting bolt 6 due to the contact of the mounting bolt 6 with the door fitting 1. Since the mounting bolt 6 can be a hexagonal bolt, the pressing metal 7 can be easily processed, which is economical.

Further, the number of welding lines required for processing the vicinity of the watertight portion of the door body is four, which is 2/3 of the six in FIG. 3 of the conventional example, and the welding distortion is further reduced, so that the processing time is significantly reduced. It is economical. By using a watertight rubber with a shape having the above-mentioned effective features, it becomes possible to manufacture a high-quality gate door for floodgates with less welding distortion at a low cost. It is possible to reduce the frictional force generated between the hardware 1 and the door body.

[0020]

[Effect of device]

 According to the structure of the watertight part for the floodgate of the present invention, it is possible to inexpensively manufacture a high-quality floodgate door body with less welding distortion as described above. Since the frictional force generated between the bodies can be reduced, the use of a small switch is sufficient, and there is an effect that a sluice gate with stable functions can be economically manufactured.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a relationship between a side portion of a door for a floodgate and a door fitting in an embodiment of a watertight rubber for a floodgate according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a relationship between a side portion of a door body for a water gate and a door fitting using a watertight rubber for a conventional water gate.

FIG. 3 is a cross-sectional view showing another example of the relationship between the side portion of the door body for a floodgate using a watertight rubber for a floodgate and the door fitting of the related art.

[Explanation of symbols]

 1 Door metal fittings 2 Watertight rubber head 3 Watertight rubber neck 4 Surface that contacts the watertight rubber retainer 5 Pedestal-like projections of the watertight rubber mounting portion 6 Mounting bolts 7 Holding hardware 8 Door body skin plate 9 Door body Girder material 10 Bearing sliding material 21 Circular protrusion 22 Door metal fittings 23 Bearing sliding body 24 P rubber mount 25 P Rubber neck 26 Skin plate 27 Holding metal 28 Countersunk bolt

Claims (1)

[Scope of utility model registration request] 1. The dimensions of the portion of the watertight rubber head that makes watertight contact with the door fitting and the surface of the mounting portion on the side of the holding metal fitting are the thickness of the holding metal fitting and the thickness of the head of the mounting bolt. The water-tight rubber fits in with a slight margin, and at the same time, it is necessary for bending deformation to fit the water-tight rubber to the door side of the mounting part and to adapt the head to a sufficient margin. A watertight rubber for sluices, which is provided with a pedestal-like protruding portion for securing an escape space.