JPH0245308Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a drainage system that uses manholes and buried pipes.

(Prior Art) Conventionally, in the case of drainage equipment that uses a manhole and buried piping, a manhole having an opening with a fitting size corresponding to the dimensions of the pipe to be connected has been manufactured separately in advance at a factory. As a result, there are many types of manholes, making it difficult to manage molds during manufacturing and inventory of finished products, and to be careful not to make dimensional errors when installing on-site. They required labor and expense, took a long time to manufacture, and sometimes construction errors were made, prolonging the construction period.

(Problems to be solved by the invention) This invention was devised to solve the above-mentioned disadvantages, and its purpose is to provide a connection structure that can accommodate several types of underground pipes of different sizes with one type of manhole. do.

(Means for solving the problem) The manhole opening is the maximum dimension of the pipes to be combined, and between the manhole and the buried pipe, one side has a fitting part with the manhole opening and the other side has a fitting part with the manhole opening, and the other side has a fitting part with the manhole opening. A socket block having a fitting part between the fitting part and the eccentric end of the pipe is interposed on the surface, and by replacing the socket block according to the pipe size, it is possible to bury each size in one type of manhole. Can be connected to piping.

(Example) An embodiment of the present invention is shown in FIGS. 1 to 4.

FIG. 1 shows a side sectional assembly view, and FIG. 2 shows a plan sectional assembly view. In both figures, a socket block 2 is interposed between a manhole 1 and a buried pipe 3 or a short adjustment pipe 4. manhole 1
The fitting portions between the socket block 2 and the socket block 2 and the fitting portions between the socket block 2 and the buried pipe 3 or the short adjusting pipe 4 are watertightly sealed with rubber gaskets 5 and 6, respectively. In the socket block 2, the outer diameter center of the fitting part _2-1 with the manhole 1 and the inner diameter center of the fitting part 2-2 with the buried pipe 3 or the short adjustment pipe ₄ are eccentric by an appropriate dimension S. This dimension S is determined by the socket block 2 depending on the level adjustment state of the buried pipe 3 or the short adjustment pipe 4 during on-site construction.
By rotating the fitting part _2-1 appropriately, the fitting part 2-1
- It is designed so that the height of ₂ can be adjusted to the height of the pipe side. The outer diameter of the fitting portion _2-1 of the socket block 2 with the manhole 1 is determined in accordance with the maximum dimension of the tip of the buried pipe that can be used in combination with the manhole 1.

(Function) In Fig. 1, if the opening dimension of manhole 1 is D and the opening dimension of socket block 2 is d, then manhole 1 has pipe size d to D.
This means that they are the same and can be applied. However, socket block 2 is not used in combination with piping size D. That is, if several types of opening dimensions d of the socket block 2 are prepared according to the pipe sizes, there is no need to prepare manholes for each pipe size as in the past. Further, the fitting portion between the manhole 1 and the socket block 2 and the fitting portion between the socket block 2 and the buried pipe 3 or the short adjustment pipe 4 are watertightly sealed by rubber gaskets 5 and 6, respectively.

(Effects of the invention) By using the connection structure of the invention, there is no need to prepare manholes for each size of buried piping as in the past, and only a small part called a socket block needs to be manufactured according to the piping size, making parts management easy. becomes. Furthermore, even when changing the size of existing underground piping, it is only necessary to replace the socket block without replacing the manhole, which greatly simplifies the on-site construction work and shortens the construction period. Furthermore, since the outer diameter center of the socket block's fitting part with the manhole and the inner diameter center of the fitting part with the buried piping or adjustment short pipe are eccentric, the level of the buried piping or adjustment short pipe can be adjusted after installation at the bottom of the manhole. By appropriately turning the socket block according to the adjustment state, level deviations can be absorbed and connections can be made without difficulty.

[Brief explanation of the drawing]

FIG. 1 shows a side sectional assembly view, and FIG. 2 shows a plan sectional assembly view. FIG. 3 is a conceptual perspective view of the two-socket block shown in FIGS. 1 and 2, and FIG. 4 is a conceptual perspective view of one manhole. 1: Manhole, 2: Socket block, 3:
Buried piping, 4: Adjustment short pipe, 5, 6: Rubber packing, S: Eccentric dimension, _2-1 : Manhole fitting part,
_2-2 : Fitting part of buried piping and adjustment short pipe,
D: Manhole opening dimension, d: Socket block opening dimension.

Claims (1)

[Scope of utility model registration request] A socket block is interposed between the manhole and the buried pipe, having a fitting part on one side with the opening of the manhole and a fitting part with the fitting part and the eccentric end of the pipe on the other side. A connection structure between a manhole and buried piping.