JPH1068163A - Inspection cylinder upper end structure for catch-basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate regulation of the inclination angle of the upper surface of a cover by a method wherein an upper end frame inserted through the upper end of an inspection cylinder is rotatable in a specified direction around a rubber ring serving as a fulcrum and the upper end face of the upper end frame is inclined at a given angle with a lower end face. SOLUTION: Given rotation inclination or more to a position below an upper end frame 11 causes dislocation of a rubber ring 15 from the inner wall of an inspection cylinder 6, and maintenance of airtightness is impossible to make. However, dislocation of the rubber ring 15 from the inner wall is prevented and through regulation of the rotation angle of the upper end frame 11 by a stopper 20, airtightness between the upper end frame 11 and the inspection cylinder 6 is ensured. In this case, the upper end frame 11 is inserted through the upper end of the inspection cylinder 6 and with this state, the upper end frame is rotatable in a 360 deg. direction around a rubber ring 15 serving as a fulcrum. Thus, the upper end face 16 of the upper end frame 11, i.e., the upper surface of a cover 19, inserted in the inspection cylinder 6 rotatably around the rubber ring 15 serving as a fulcrum is brought into a state to incline based on a lower end face 17 of the upper end frame 11. This constitution performs regulation of an inclination angle in a wide range, increases the degree of freedom of adaptation to a slope ground, and facilitates rotation of even the upper end frame 11 of a large inspection cylinder 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of the upper end of a check tube of a drainage basin installed at, for example, a sewage junction.

[0002]

BACKGROUND OF THE INVENTION For example, in the case of a drainage basin for public sewerage, the drainage basin is located in a private land near a public land, usually within a range of about 1 m from the boundary between the public land and the private land into the private land. Often installed under aisles. When a drainage basin is installed under such a sloped passage, the lid attached to the upper end of the inspection cylinder that reaches the ground surface from the drainage basin extends along the ground surface so as not to interfere with walking or traffic of cars. Must be tilted. Normally, a lid is attached to the inspection tube via a short cylindrical upper frame. To incline the lid along the ground surface, as shown in FIG. Lower part (2) and upper part (3) where the surface (4) is inclined at an angle θ
The upper part (3) is rotated with respect to the lower part (2), and the inclination angle of the upper end face (5) of the upper part (3), that is, the inclination angle of the lid is shown in FIG. A configuration is provided for adjusting from 0 ° to the maximum tilt angle 2θ shown in FIG. In the above configuration, the weight becomes large when the upper end frame has a large diameter of 300 mm or more, and it is difficult to rotate the upper part (3) with respect to the lower part (2).

[0003]

2. Description of the Related Art Conventionally, as shown in FIG.
The upper end frame (7) inserted into the upper end of (6) is formed into a short cylindrical shape whose diameter gradually decreases from the lower end to the upper end, and the upper end frame (7)
A configuration is provided in which a rubber ring (9) is mounted in a rubber ring fitting groove (8) at the lower end of the groove. In this configuration, as shown in FIG. 14, the upper end frame (7) is supported by a rubber ring (9) so that the upper end surface (10) of the upper end frame (7), that is, the lid follows the slope of the ground surface GL. Is rotated by a predetermined angle θ.

[0004]

In the above conventional inspection tube upper end structure, even if the upper end frame (7) has a large diameter, a rubber ring is required.
(9) can be easily rotated with the fulcrum as the fulcrum, but the maximum tilt angle when the upper frame (7) is rotated and the lid is tilted is at most about 10 °, Is difficult to apply.

[0005]

According to the present invention, as a means for solving the above-mentioned conventional problems, a cylindrical upper frame (11) is inserted from the upper end of an inspection cylinder (6) reaching the ground surface from a drainage basin. , A configuration in which a lid (19) is attached to the upper end frame (11),
In (11), the lower end has a maximum diameter, and the upper end surface (16) is inclined at a predetermined angle with respect to the lower end surface, and a rubber ring (15) is attached to the lower end of the upper end frame (11). When the upper frame (11) is inserted from the upper end of the inspection cylinder (6), the upper frame (1) is inserted.
1) provides an upper end structure of a check tube of a drainage basin which can be rotated in a 360 ° direction about the rubber ring (15) as a fulcrum.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. The upper frame (11) shown in the figure has a short cylindrical shape and the lower half (12)
And the upper half (13), the lower half (12) is tapered so that the diameter gradually decreases from the lower end to the upper end of the maximum diameter, and the lower end of the lower half (12) has a rubber Wheel mounting groove
(14) is provided around the rubber ring mounting groove (14).
(15) is installed.

The upper half (13) is extended at a predetermined angle with respect to the lower half (12). As shown in FIG. 2, the upper end surface (16) of the upper half (13) has a lower half. It is inclined by an angle theta ₂ with respect to (12) the lower end surface (17).

At the upper end of the upper half (13), a lid receiving portion (18) is formed with an enlarged diameter, and a lid (19) is attached to the lid receiving portion (18). At the top of the upper half (13),
A stopper (20) is formed from the lower side of (18).

The upper end frame (11) has an inspection cylinder as shown in FIG.
Interpolated from the upper end (6), the lower half (12) a horizontal state of the upper end frame (11), the upper end surface of the upper half (13) (16) is at an angle theta ₂ with respect to the horizontal line HL left down It is inclined.

The upper frame 11 is rotated in the direction of the arrow A in FIG. 3 (clockwise in the drawing) with the rubber ring 15 as a fulcrum, and the stopper (20) of the upper frame 11 is rotated as shown in FIG. ) Is in contact with the upper end of the inspection cylinder (6), and at the maximum clockwise rotation angle θ ₁ , the upper end frame (1
The upper end surface (16) of (1) is at an angle θ (θ ₂ −θ) with respect to the horizontal line HL.
₁ ) Only slopes down left. Further, the upper end frame (11) is rotated in the direction of the arrow B in FIG. 3 (counterclockwise direction in the drawing) with the rubber ring (15) as a fulcrum, and as shown in FIG. 18) in counterclockwise rotation angle theta ₁ lower surface is in contact with the inspection tube (6) upper end, the upper end surface (16) of the horizontal line H of the upper end frame (11)
It inclines leftward and downward by an angle θ ₃ (θ ₁ + θ ₂ ) with respect to L.

That is, in this embodiment, the upper end face (16) of the upper end frame (11)
Or lid (19) upper surface can be adjusted the inclination angle in the range of angle theta to theta ₃ with respect to the horizontal line HL. The upper frame
(11) When the rotated inclined _least θ downward, the rubber ring (15) is airtight can not be maintained off-inspection tube (6) inner wall.
However, it is impossible to visually check from the outside whether or not the rubber ring (15) has come off from the inner wall of the inspection tube (6).
0) are secure airtightness between the upper end frame and regulates so as not to exceed the rotational angle of the upper end frame (11) theta ₁ (11) and inspection tube (6) by. Specifically, θ ₁ is 10 °, θ ₂
Is 15 °, the upper end surface (16) of the upper end frame (11) is 2 ° from 5 °.
The tilt angle can be adjusted up to 5 °.

When the upper frame (11) is rotated by 180 °, the lower half (12) of the upper frame (11) is in a horizontal state as shown in FIG.
The upper end surface (16) of the upper half (13) has an angle θ _{2 with} respect to the horizontal line HL.
The upper end frame (11) is attached to the rubber ring (15).
6 as a fulcrum in the direction of arrow C in FIG. 6 (counterclockwise direction in the drawing), and as shown in FIG. 7, at the maximum counterclockwise rotation angle θ ₁ where the stopper (20) is in contact with the upper end of the inspection tube (6), The upper frame (1
The upper end surface (16) of (1) is at an angle θ (θ ₂ −θ) with respect to the horizontal line HL.
₁ ) Only slope down to the right. Further, the upper frame (11) is rotated about the rubber ring (15) as a fulcrum in the direction of arrow D in FIG. 6 (clockwise direction in the drawing), and as shown in FIG. 18) in the clockwise rotation angle theta ₁ lower surface is in contact with the inspection tube (6) upper end, the upper end surface (16) of the horizontal line H of the upper end frame (11)
L is inclined downward to the right by an angle θ ₄ (θ ₁ + θ ₂ ).

FIGS. 9 and 10 show another embodiment of the present invention. The upper end frame (21) shown in the figure is in the shape of a short cylinder, a lower diameter part (22) is formed, and a receiving part (23) of a lid (24) is formed in the upper end part with a larger diameter. ing. A rubber ring mounting groove (25) is provided around the enlarged diameter portion (22), and the rubber ring mounting groove (25) is provided.
Is provided with a rubber ring (26). The upper end frame (21) is similar to the upper end frame (11) of the previous specific example, as shown in FIG.
It is inserted from the upper end of (6), and it is possible to adjust the inclination angle of the upper end surface (27) of the lid (24) by rotating in the direction of arrow E with the rubber ring (26) as a fulcrum.

[0014]

According to the present invention, the upper end surface of the upper end frame, that is, the upper surface of the lid, which is rotatably inserted around the rubber ring as the fulcrum, is
Since the upper end frame is inclined with respect to the lower end surface (base surface), the inclination angle can be adjusted in a wide range by that amount, and the degree of freedom in application to an inclined ground is increased. Since the rotation of the upper end frame of the large-diameter inspection cylinder is easy, the inclination angle of the upper surface of the lid can be easily adjusted.

[Brief description of the drawings]

 1 to 6 show one specific example of the present invention.

FIG. 1 is a perspective view of an upper end frame.

FIG. 2 is a side sectional view of an upper end frame.

FIG. 3 is an explanatory view of an upper end frame mounting state (downward left).

FIG. 4 is an explanatory view of the uppermost frame rightward maximum rotation state (left down)

FIG. 5 is an explanatory diagram of a leftward maximum rotation state of the upper end frame (downward left).

FIG. 6 is an explanatory view of an upper end frame mounting state (downward right).

FIG. 7 is an explanatory view of the uppermost frame leftward maximum rotation state (downward right).

FIG. 8 is an explanatory diagram of the uppermost frame rightward maximum rotation state (downward right) FIGS. 9 and 10 show another specific example of the present invention.

FIG. 9 is a perspective view of an upper end frame.

FIGS. 11 and 12 relate to a conventional example.

FIG. 11 is a side view of the upper end surface in a horizontal state.

FIG. 12 and FIG. 14 are side views showing another conventional example.

FIG. 13 is a side view of the upper end surface in a horizontal state.

FIG. 14 is a side view of the upper end surface inclined state.

[Explanation of symbols]

 6 Inspection cylinder 11,21 Upper frame 15,26 Rubber ring 16,27 Upper surface 19,24 Lid

Claims (1)

[Claims] 1. A structure in which a cylindrical upper frame is inserted from the upper end of an inspection cylinder reaching the ground surface from a drainage basin, and a lid is attached to the upper frame, and the upper frame has a lower end having a maximum diameter. The upper end face is inclined at a predetermined angle with respect to the lower end face, a rubber ring is attached to the lower end of the upper end frame, and in a state where the upper end frame is inserted from the upper end of the inspection cylinder, The upper end frame is rotatable in a 360-degree direction about the rubber ring as a fulcrum, and the inspection tube upper end structure of the drainage basin is characterized in that it is provided.