JPH0355625Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention is an automatic system in which when the water level rises, the door body rises due to buoyancy to discharge water and remove sand, and when the water level falls, it descends and fully closes. This invention relates to a floating roller gate that opens and closes automatically, especially a watertight structure between the doorstop side and the side of the door body.

(Description of Prior Art) Floating roller gates, which automatically open and close by vertically raising and lowering a gate body using buoyancy in accordance with vertical fluctuations in water level, have been generally known since before this application. As shown in Figure 3, the conventional floating gate has two parallel guide grooves 2 on the doorstop side.
1 and 22 are provided, and upper and lower guide rollers 23 and 24 attached to the sides of the door body 20 are fitted thereto to hold the door body in an inclined shape. Because it is provided to match the longitudinal direction, when floating, the side watertight rubber crosses the guide groove, and the so-called watertight line is divided at the door groove, which causes water to leak from the side. This has the disadvantage that spilled debris and the like are trapped between the two, resulting in incomplete watertightness at the sides even when the door bottoms out and is fully closed.

(Purpose of the invention) The present invention aims to solve these conventional problems.The first purpose is to prevent the watertight rubber on the side of the door body from being damaged when the door body is bottomed, as well as when it is floating. To provide a side watertight structure for a floating roller gate, in which the watertight line is always in continuous contact with the guide groove on the door stop side without being cut off, eliminating the possibility of getting caught in dust, etc., and achieving complete side watertightness even in floating roller gates. The second purpose is to keep the side watertight rubber in contact with the door stop side watertight plate over the entire length even if the inclination angle of the door body changes while the door body is floating. An object of the present invention is to provide a side watertight structure of a floating gate that can respond to changes.

(Structure of the invention) In order to achieve this purpose, the invention has a guide groove consisting of two parallel vertical grooves on the door stop side.
Insert the guide rollers attached to the top and bottom of the side of the door body,
In a floating roller gate in which the gate body is raised and lowered in an inclined manner by buoyancy, a side watertight rubber is attached almost perpendicularly to the entire length of the side surface between the upper and lower guide rollers on the inclined gate body, and a corresponding door stop is installed. On the side, a watertight plate is placed between the two guide grooves and along the entire length of the vertical surface, and comes into contact with the watertight rubber on the side of the floating middle door body.

(Example) A preferred embodiment of the invention is shown below.

As shown in FIG. 1, the door body 10 has guide rollers attached to the top and bottom of the side of the door body in guide grooves 11 and 12, which are two parallel longitudinal grooves provided on both sides of the side wall of the waterway on the door stop side. 13 and 14, and is installed so that it can be moved up and down using a guide.

This gate body 10 is used as a so-called floating gate which has the necessary buoyancy to float itself when the water level rises, or a float is separately attached and the gate body 10 is raised and lowered by the buoyancy of the float.

The guide rollers 13 and 14 are attached to the side plates 10a that are integrally provided on both sides of the door body 10 at intervals in the vertical direction.
In addition, the lower rollers 14 are individually fitted into the rear guide grooves 11 to hold the door body 10 in an inclined shape.

Although the guide grooves 11 and 12 are provided in parallel, the lower part 12' of the guide groove 12 is formed to be displaced in order to make the inclination angle of the door body 10 gentler when it is floating than when it is on the bottom.

This is to compensate for the decrease in buoyancy due to jet flow during floating.

The side watertight rubber 15 is attached almost perpendicularly to the side plate 10a of the door body 10 across the middle of the upper and lower guide rollers 13, 14 over its entire length. 12
Correspond to the vertical plane between.

A watertight plate 16 is attached to the vertical surface along its entire length, and the watertight rubber 15 is brought into contact with this.

(Functions and Effects) When the water level drops to below a set value, the door body 10 stops generating buoyancy on itself, so it lands on the bottom and closes the waterway. At this time, since the upper guide roller 13 is located at the lower part 12' of the guide groove 12,
Although the angle of inclination of the door body 10 is steeper than when floating, the watertight rubber 15 on the side is almost vertical and in contact with the watertight plate 16. Therefore, the side watertightness of the door body 10 is perfect.

In this state, when the water level rises and the door body 10 rises due to buoyancy, the upper and lower guide rollers 13,
14 is guided by parallel guide grooves 11 and 12, the angle of inclination of the door body 10 becomes gentler than when the door body 10 lands on the bottom, as shown by the chain line in FIG. Therefore, the watertight rubber 15 attached to the side plate 10a also tilts accordingly, but within the width of the watertight plate 16. Therefore, since the watertight rubber 15 does not come off from the watertight plate 16, contact is maintained, and the side watertightness is maintained. Complete.

As mentioned above, this invention installs side watertight rubber almost perpendicularly to the entire length of the side surface between the upper and lower guide rollers on the inclined door body, and attaches this watertight rubber to the corresponding two guide grooves on the door stop side. Since it is made to contact the watertight plate in between, the sides of the door body can be completely watertight during floating from the time the door body touches the bottom, and water can be reliably stopped. Since the line is not divided into guide grooves during floating, water does not flow out from the sides or debris gets caught, and water only flows from the bottom, resulting in stable buoyancy. Furthermore, even if the inclination angle of the door body changes more slowly during floating than when it bottoms out, side watertightness can be completely ensured.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a side view of a floating roller gate implementing the present invention, Fig. 2 is an enlarged plan view of the same main part, and Fig. 3 is a conventional floating gate. FIG. 10... Door body, 11, 12... Guide groove, 15
... Side watertight rubber, 13, 14 ... Guide roller, 16 ... Watertight plate.

Claims (1)

[Scope of utility model registration request] In a floating roller gate, guide rollers attached to the upper and lower sides of the door body are fitted into a guide groove consisting of two parallel vertical grooves on the door stop side, and the door body is raised and lowered in an inclined manner by buoyancy. A side watertight rubber is installed almost perpendicularly to the entire length of the side surface between the upper and lower guide rollers on the inclined door body, and a floating rubber is installed on the corresponding door stop side between the two guide grooves and along the entire length of the vertical surface. A side watertight structure for a floating roller gate, characterized by arranging a watertight plate in contact with watertight rubber on the side of the middle door body.