JPH0577340U - Universal joint for manhole - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a manhole joint in which the pipe connection angle can be freely adjusted within a predetermined range. [Structure] A pipe having a socket outer shell portion (14) having a spherical inner surface (15) formed in an opening (13) of a saddle (12) and having a spherical outer surface (18) in the socket outer shell portion (14). The socket inner core portion (16) having the insertion opening (17) is rotatably fitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a universal joint attached to a manhole.

[0002]

[Prior Art]

 Conventionally, as shown in FIGS. 6 and 7, an opening (3) is provided in the center of a saddle (2) which is curved along the outer circumference of a manhole, and an annular packing (6) is provided in the opening (3). There is provided a manhole fitting (1) having an annular receiving portion (4) provided with a packing groove (5) for mounting a fitting (1).

[0003]

[Problems to be solved by the device]

 The joint (1) is attached by adhering a saddle (2) to the opening (8) of the manhole (7), and the pipe (9) is attached to the socket (4) as shown in FIG. Although connected, the fitting (1) is not universal so the angle of connection of the pipe (9) is limited and if there is an obstacle in front of the opening (8) in the manhole (7), It is not possible to connect the pipe (9) without avoiding the problem, and it is troublesome to connect the pipe (9), and the attachment strength to the manhole (7) is low.

[0004]

[Means for Solving the Problems]

 As a means for solving the above-mentioned conventional problems, the present invention provides an opening (13) in a saddle (12) which is curved along the outer circumference of a manhole (23) and surrounds the opening (13). Is formed with a socket outer shell portion (14) having a spherical inner surface (15), and the socket outer shell portion (14) has a spherical outer surface (18) and a socket inner core portion (17) having a tube insertion port (17). (16) provides a manhole universal joint (11) that is rotatably fitted, and a manhole universal joint (11) in which sand processing (22) is applied to the entire outer surface of the universal joint (11). 11) is provided.

[0005]

[Action]

 Abutting the inner surface of the saddle (12) with the outer periphery of the manhole (23), fitting the receiving shell (14) into the opening (24) of the manhole (23), and filling the gap with mortar or the like. Attach the fitting (11) to the manhole (23) by.

The pipe (26) is inserted and connected to the pipe insertion port (17) of the receiving inner core part (16), and the receiving inner core part (16) is connected to the receiving outer shell part (14). Since it is freely rotatable, the connection angle of the pipe (26) can be freely adjusted within a predetermined range.

Further, sanding processing (22) can be applied to the entire outer surface of the joint (11), and by doing so, the attachment strength of the joint (11) to the manhole (23) can be remarkably improved.

[0008]

【Example】

 The present invention will be described with reference to an embodiment shown in FIGS. 1 to 3. An opening (13) is provided at the center of a saddle (12), and a spherical shape is provided inside the opening (13). A socket outer shell part (14) having an inner surface (15) is formed, and the socket outer shell part (14) has a spherical outer surface (18) and a socket inner core part (16) having a tube insertion port (17). Is rotatably fitted through the packing (19). A packing groove (20) for mounting the annular packing (21) is provided inside the pipe insertion opening (17) of the receiving inner core portion (16).

Sanding processing (22) is applied to the entire outer surface of the manhole universal joint (11) having the above structure. Then, the joint (11) is inserted into the opening (24) of the manhole (23) as shown in FIG. 2 and fixed by the mortar (25). At this time, since the entire outer surface of the joint (11) is sanded (22), the outer surface of the joint (11) and the mortar (25) are well compatible with each other, and the joint (11) firmly holds the manhole. Mounted on (23).

Further, a pipe (26) is inserted and connected to the pipe insertion port (17) of the receiving inner core portion (16) of the joint (11), and the receiving inner core portion (16) is a receiving outer shell. Since it is rotatable with respect to the part (14), the angle of the pipe (26) can be freely adjusted.

4 and 5 show another embodiment of the present invention. In the joint (11A) of the present embodiment, a socket outer shell portion (14A) having a spherical inner surface (15A) is formed from the center opening (13A) of the saddle (12A) to the inside and outside, and the socket outer shell (14A) is formed. An inner core part (16A) having a spherical outer surface (18A) and a tube insertion port (17A) is rotatably fitted to the shell part (14A) via a packing (19A). A packing groove (20A) for mounting an annular packing (21A) is provided inside the pipe insertion opening (17A) of the receiving inner core portion (16A).

The manhole universal joint (11A) having the above structure is inserted into the opening (24A) of the manhole (23A), and the saddle (12A) of the joint (11A) is inserted into the manhole (25A) with a curable adhesive (25A). 23A) It is adhered to the outer periphery and further fixed to the manhole (23A) by all anchors (26A) via anchor holes (22A) at the four corners of the saddle (12A).

[0013]

[Effect of the device]

 Therefore, in the present invention, since the joint can be firmly attached to the manhole and the angle of the pipe connected to the joint can be freely adjusted within a predetermined range, even if the installation position of the manhole opening is accidentally shifted. Even if there is an obstacle in front of the manhole, it is possible to handle it, and the work of connecting the pipe becomes extremely easy. In addition, no stopper is provided in the core of the receiving port, and the pipe can be slidably connected, so it also has an exchange function.

[0014]

[Brief description of drawings]

 1 to 3 show an embodiment of the present invention.

1 is a perspective view

[Figure 2] Manhole joint mounting partial cross section

FIG. 3 is a perspective view of a manhole. FIGS. 4 and 5 show another embodiment of the present invention.

[Figure 4] Manhole joint mounting partial cross section

FIG. 5 is a perspective view of a manhole. FIGS. 6 and 7 show a conventional example.

FIG. 6 is a sectional view.

[Figure 7] Manhole joint mounting partial cross section

[Explanation of symbols]

 11,11A Manhole universal joint 12,12A Saddle 13,13A Opening 14,14A Receptacle outer shell 15,15A Spherical inner surface 16,16A Receptacle inner core 17,17A Pipe insertion port 18,18A Spherical outer surface 23,23A Manhole 26 , 26A tube

Claims (2)

[Scope of utility model registration request] 1. A saddle curved along the outer circumference of a manhole is provided with an opening, and a socket outer shell portion having a spherical inner surface is formed around the opening, and the socket outer shell portion has a spherical outer surface. A universal joint for a manhole, characterized in that a core portion of a receiving port having a pipe insertion port is rotatably fitted. 2. The manhole universal joint according to claim 1, wherein the outer surface of the manhole universal joint is sanded.