JPH0429371Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a centripetal device for a pipe body used in construction of sewer pipes, etc.

[Prior art and its problems]

Generally, when laying a sewage pipe such as a humid pipe or a PVC pipe underground, a trench is first dug on the ground surface, and a sewage pipe with a length of 2 to 4 m is installed at the bottom of the trench via a support. This is done by pouring soil over the pipes and burying them after each pipe is joined. In particular, when joining each sewer pipe, when aligning the laying direction in a straight line, it is necessary to It is important to measure the center point and slope of the sewer pipe.

However, conventional sewer pipe installation work usually involves
Since the straight and sloping conditions in the installation direction between the manholes to be laid are measured in advance using the transit, and this is used as a guideline, it is troublesome to center the sewer pipes, and it is difficult to maintain straight piping conditions. There was a problem that it could not be obtained with high accuracy.

[Purpose of invention]

The present invention was made under the above circumstances, and aims to provide a centripetal device for a pipe body such as a sewer pipe that allows the center position of the pipe body to be easily recognized.

[Means for solving problems]

In order to achieve the above object, the present invention forms a through hole penetrating the front and back sides of the base body in the central part in the longitudinal direction of the base body, and installs a spirit level in the through hole so as to be visible from both the front and back sides of the base body. To provide a centripetal centripetal device in which a pair of support legs are folded and rotatably attached to both sides of the base in the longitudinal direction, and the legs can be selectively opened toward both the front and back sides of the base.

[Effect]

Place the centripetal device with a pair of supporting legs on the tube body, and move the centripetal device until the level shows the level to find the center of the tube body. The supporting legs are foldable and rotatable relative to the base body, and can be stored compactly when not in use. In addition, the supporting legs can be selectively opened toward the front and back sides of the base, and the spirit level can be seen from both the front and back sides of the base, so the centripetal can be used to open either the front or back of the base. It can also be used facing upward.

〔Example〕

Hereinafter, the present invention will be explained based on an illustrated embodiment.

1 and 2 show a centripetal centripetal tube according to the present invention. In the figures, 1 is a base body with a rectangular cross section, and a through hole 2 is formed in the longitudinal center of the wide front and back surfaces 1a. A first spirit level 3 is installed in the through hole 2 so as to be visible from both the front and back sides of the base 1. Further, reference numerals 4 and 4 in the figure represent a pair of support legs provided on both sides of the base 1 in the longitudinal direction. As shown by the two-dot dashed line in Figure 2,
The legs can be freely opened toward both the front and back sides of the base body 1. Furthermore, in the figure, 6 is a through hole penetrating one side in the longitudinal direction of the base 1, 7 is a second level installed in the through hole 5, and 8 is a longitudinal side of the narrow side surface 1b of the base 1. This is the third level installed at the center of the direction.

That is, as shown in FIGS. 3 and 4, the first spirit level 3 is placed with the support legs 4 and 4 spread apart and the base 1 straddled over a tube body 11 such as a Huum tube. By measuring the horizontal state XX,
The center point C in the radial direction of the tube body 11 is determined, thereby making the central axis direction Y-Y of the tube body 11 visible. The third spirit level 8 makes the radial center point C of the tube body 11 visible, and also makes it possible to visually recognize the inclination state in the Y-Y direction. This makes it possible to measure the horizontal state of an object.

Therefore, in order to lay a sewer pipe using the centripetal device described above, first place the base 1 on which the supporting legs 4, 4 are provided on top of the existing humid pipe, and then use the first spirit level 3. By determining the horizontal position, the center of the Huum pipe is determined, and then, by using a transit, it is measured whether or not it is in a straight line with the Huum pipe connected to the existing Huum pipe, and after confirming the straight line state. , burial work is done by covering with soil.

In addition, in the embodiment of the present invention, the supporting legs provided on the base body are simply folded so that the legs can be opened freely, but both supporting legs can be adjusted to move toward and away from each other to provide an interval according to the outer diameter of the tubular body. With this configuration, the state of placement on the tube body can be made more stable.

[Effect of idea]

As explained above, in this invention, the center of the tube is determined by placing the base body equipped with a level on the tube using support legs, so that the level can be placed in a stable state on the tube. Since the support legs can be folded and rotated freely, the overall device can be made compact and convenient to carry. In addition, since the supporting legs can be selectively opened toward the front and back sides of the base, and the spirit level is visible from both the front and back sides of the base, the centripetal can be used on either the front or back of the base. It can be used even if it is facing upward. Therefore, when using it, there is no need to take the trouble of identifying the front and back sides or turning the front and back sides in the opposite direction, and the work can be started immediately, which is extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the centripetal tube body according to the present invention, FIG. 2 is a vertical side view, and FIG.
FIG. 4 and FIG. 4 are explanatory diagrams of the measurement state placed on the tube body. 1... Base body, 3... First level, 4... Support leg, 5... Axis.

Claims (1)

[Scope of utility model registration request] A through hole penetrating the front and back sides of the base is formed in the longitudinal center of the base, and a spirit level is installed in the through hole so as to be visible from both the front and back sides of the base, and a pair of levels are provided on both sides of the base in the longitudinal direction. A centripetal centripetal device having a tubular body in which the support legs are foldable and rotatable, and the legs can be selectively opened toward both the front and back sides of the base body.