JPS5920430Y2 - Manhole combination quick reference table - Google Patents

Description

[Detailed description of the invention] The present invention relates to a quick reference table for combinations of prefabricated anchors and holes. This relates to a quick reference table of combinations of prefabricated manholes that diagrams combinations of dimensions of building blocks.

In recent years, manholes have been installed with a lid and catch frame 1, an adjustment ring 2, a slanted wall 3, as shown in Fig. 1 from the viewpoint of workability.
A prefabricated manhole constructed by connecting and assembling a straight wall 4, a frame block 5, and a bottom plate 6 has come to be used exclusively.

However, when installing the inflow pipe 7 in the middle of this prefabricated manhole, the drilling position of the inflow pipe 7 is located at the joint of each member.
Since this is undesirable, the dimensions of the manhole members must be selected and combined so that the drilling position does not hit the joint j.However, while the position of the outflow pipe 8 is determined by the manhole depth L, Since the position of the inflow pipe 7 differs for each manhole, it is often difficult to easily determine the combination of dimensions of the manhole members.

In view of these points, the present invention makes it possible to instantly determine the combination of dimensions of each member of the prefabricated manhole when the drilling position of the inflow pipe 7 is known, and also to determine the excavation depth of the manhole, the installation position of the bottom plate 6, etc. The purpose is to provide a quick reference table of combinations of prefabricated manholes that can be easily understood.

An embodiment of the present invention will be explained with reference to FIGS. 2 and 3. A scale is attached to each predetermined manhole depth L with the top end of the manhole lid set as Om, and the lid, receiving frame dimensions a, and adjustment ring dimensions b , diagonal wall dimension C1, straight wall dimension d, frame block dimension e, bottom plate dimension f, etc. are color-coded for each member dimension and are represented in the form of a bar graph in the order of connection: together with all possible combinations A of each member according to the manhole depth, B, C, D...
・ is made into a diagram, and an index F is provided at the bottom of the diagram to indicate the manhole depth and numerically indicate the frame block dimension e and the slope wall dimension C.

Figure 2 shows an example of determining the combination of prefabricated manholes using the quick reference table according to this study, when the manhole depth L is 1.
To explain in the case of 4 m, in a manhole with this depth, if the inflow pipe 7 is installed at a position 1.0 m from the top of the lid, the combination where the pore position does not correspond to the joint j of each member is as follows. If the manhole is a combination of A or B and the inflow pipe 7 is installed at a position 0.7 m from the top of the lid, only the manhole of combination C has a hole drilling position that does not hit the joint of each member, so it is difficult to install it. It turns out that this is a suitable manhole.

Also, the lower end of the bottom plate 6 at the lower end of the manhole is 1.
You can instantly read that it is 7m away.

Although the above example shows an example in which the top of the manhole cover is Om, it is also possible to use a quick reference table of combinations in which the depth of the manhole is Qm and the height to the top of the cover is scaled. In this case, the head difference of the inflow and outflow pipes can be easily obtained.

Further, when the manhole depth L is deep and several straight walls 4 are combined, the height of each straight wall 4 can be easily known by inserting broken lines at predetermined intervals in the straight wall dimension d.

The manhole combination quick reference table according to the present invention has the configuration described above, so once the manhole depth of the manhole to be installed is determined, the manhole combination quick reference table for that depth is searched for by the index, and By placing the high value directly on the scale of the quick reference table, you can know the position of the inflow pipe, and at the same time, from among the several combinations shown, the drilling position of the inflow pipe does not hit the joint of each member. The combination of manholes can be selected instantly, and the excavation depth of the manhole and the installation position of the bottom slab can be easily determined, so parts can be ordered, designed, and constructed quickly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a prefabricated manhole, and FIGS. 2 and 3 are explanatory diagrams for hanging an example of the implementation of the present invention. a: Lid, catch frame dimensions, b: Adjustment ring dimensions, C: Diagonal wall dimensions, d: Straight wall dimensions, e: Body block dimensions, f: Bottom plate dimensions, L: Manhole depth, F: Index, 3: Diagonal Wall, 4:
Straight wall, 5: frame block, 7: inflow pipe, 8: outflow pipe.

Claims (1)

[Scope of utility model registration request] Assembly type Manbono □ Adjustment ring for each hole depth,
This is a quick reference table for combinations of prefabricated manholes, in which several combinations of manhole component dimensions such as slanted walls, straight walls, and locks are shown in a bar graph, and an index is provided at the bottom of the chart that clearly indicates the manhole depth in numerical values.