JPH0626802Y2 - Cut tube length measuring instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a cut pipe length measuring instrument for measuring the length of a cut pipe when connecting a manhole of a telecommunications civil engineering facility and a pipe line.

(Prior Art) FIG. 4 is an explanatory view of a conventional method for connecting a manhole and a pipeline of a telecommunications civil engineering facility, where 15 is a manhole, 16 is a duct sleeve, and 18 is a pipeline body. . Fourth
The pipe cutting dimension was calculated by obtaining the sum of the distance from the pipe line end to the duct sleeve end on the manhole side and the pipe line side insertion length and duct sleeve side insertion length shown in the figure, and the pipe was cut based on that. .

However, the above dimensions are different for each pipe type and pipe diameter in consideration of the temperature expansion and contraction of pipes and the effects of earthquakes, etc. There is a problem in that it may be cut at a length, which requires a great deal of rework work.

(Problems to be solved by the invention) The present invention, when connecting a manhole and a pipeline of a telecommunications civil engineering equipment, determines the cutting pipe length that matches the pipe type and pipe diameter, and cuts accurately, It is an object of the present invention to provide a cutting tube length measuring instrument capable of confirming whether the cutting tube is correctly inserted into the duct sleeve on the manhole side after connecting the cutting tube.

(Means for Solving the Problems) The present invention is a thin, rectangular measuring instrument made of plastic, and the surface of the measuring instrument has a pipe type, an exclusion length for each pipe diameter, and a pipe main body side insertion length that are colored. In addition to being displayed separately, there is a movable marking bar for marking the pipe, and after connecting the cutting pipe to the back of the measuring instrument, the cutting pipe is on the manhole side of the telecommunications civil engineering equipment. It has an insertion length inspection gauge for confirming whether it is correctly inserted in the duct sleeve, and when connecting the manhole and the pipe line, the cut pipe length is indexed according to the pipe type and pipe diameter of the pipe line to be installed. In addition, it is possible to check the insertion length on the pipe body side and confirm that the cut pipe is correctly inserted in the duct sleeve on the manhole side.

(Embodiment) FIG. 1 is an external view of an embodiment of the cutting tube length measuring instrument of the present invention, (a) is a front view, (b) is a rear view, and (c) is a sectional view.

FIG. 2 is a view for explaining a list of display part dimensions of the cut tube length measuring instrument of the present invention, and Table-1 is a list of deduction length display part dimensions and pipe body side insertion length display part dimensions. is there.

In FIG. 1 (a), A is a deduction length display part, and the deduction length (length of A) from the reference distance between the laid pipe end and the manhole inner wall is the pipe type and pipe to determine the cut pipe length. It is displayed as a bar graph for each diameter, and B is the insertion length display part on the pipe body side, and the insertion length (length of B) when inserting a cut pipe at the end of the laying pipeline is pipe type and pipe diameter. Is displayed in. 7
Is a marking bar, and by sliding it,
The display length on the display portions A and B is set to the side surface 8 of the marking bar 7,
9 is used to mark a cut tube.

In FIG. 1 (b), 10 is an insertion length inspection gauge for confirming the insertion length of the cutting tube by connecting the cutting tube and sliding it back and forth from inside the manhole. Note that 11 indicates the dimension position of the inspection object.

3 (a), (b) and (c) are diagrams for explaining the method of using the measuring instrument of the present invention, and 4 is the measuring instrument of the present invention,
12 is a pipe for cutting.

(1) Determining the cut pipe length The laying pipe end 13 and the inner wall of the manhole shown in Fig. 3 (a)
The reference distance (L) is obtained by measuring the distance up to 14, and as shown in FIG.
Using the deduction length display portion A, slide the marking bar 7 to the position of the deduction length (x) according to the pipe type and pipe diameter of the laid pipe, and align the side surface 8 of the marking bar with the position (L-x). Determine the position of the cut tube by marking.

(2) Determining the conduit insertion length As shown in Fig. 3 (b), depending on the pipe type and the diameter of the cut tube, the insertion length indicator B on the conduit body side of the measuring instrument 4 of the present invention is displayed. By using, the marking bar 7 is slid to the position of the insertion length (y) on the conduit body side, and the side surfaces 9 of the marking bar are aligned and marked to determine the insertion length on the conduit body side.

(3) Check if the cut pipe is correctly inserted into the duct sleeve on the manhole side. After inserting the cut pipe into the laying conduit side up to the marking position of the insertion length, enter the manhole and insert it as shown in Fig. 3 (c). Using the back surface of the measuring instrument 4 of the present invention, insert the insertion length inspection gauge 10, slide the insertion length inspection gauge 10 until it hits the pipe after connection, and the position where the hit Depending on whether or not the diameter is within the allowable range, the cut tube will be the manhole side duct sleeve as specified.
Check if it is inserted in 16.

(Effect of the Invention) As described above, according to the cutting pipe length measuring instrument of the present invention, the cutting position of the pipe can be recognized at a glance even if the pipe type and pipe diameter of the pipe to be installed are different depending on the situation of the site. , In addition, the cutting length can be marked on the insertion length of the main body of the conduit, and it can be confirmed whether the conduit is inserted as specified.
There is an advantage that it is possible to prevent repair work due to a memory error in the specified dimensions or a calculation error.

[Brief description of drawings]

FIG. 1 shows the appearance of an embodiment of the cutting tube length measuring instrument of the present invention. (A) is a front view, (b) is a rear view, (c) is a sectional view, and FIG. 2 is a cutting tube length of the present invention. The figure for demonstrating the list of the display part dimensions of a measuring instrument, FIG.3 (a), (b), (c) is explanatory drawing of the usage method of the cutting tube length measuring instrument of this invention, FIG.4 is conventional. It is explanatory drawing of the cutting tube length measuring method of. 4 ... Measuring device of the present invention, 7 ... Marking bar 8, 9 ... Side of marking bar 10 ... Cut tube insertion length inspection gauge 11 ... Inspection target dimension position 12 ... Pipe for cutting pipe 13 …… Installed pipe tip, 14 …… Manhole inner wall 15 …… Manhole 16 …… Manhole side duct sleeve 17 …… Pipe cutting position, 18 …… Pipe main body A …… Deduction length display, B… ... Insertion length display

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yukichi Sato 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Ryoji Ishizuka 1-1-6, Uchisai-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (1)

[Scope of utility model registration request] 1. A cutting pipe length measuring instrument for determining a cutting pipe length determined for each pipe type and pipe diameter of a pipe line to be laid when connecting a manhole and a pipe line, which is a thin rectangle made of plastics. On the surface of the measuring instrument, the deduction length for each pipe diameter and the insertion length on the pipe body side are displayed by color, and there is a movable marking bar for marking the pipe. , After connecting the cutting tube to the back of the measuring instrument,
A cutting pipe length measuring instrument having an insertion length inspection gauge for confirming whether the cutting pipe is correctly inserted into a duct sleeve on the manhole side of telecommunications civil engineering equipment.