JPH062091Y2 - Gradient measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a gradient measuring device for measuring the gradient of a laid pipe or the like.

[Conventional technology]

In general, pipes such as drain pipes are laid with a gradient of, for example, about 1/50 to 1/100 in order to ensure optimum drainage performance.

Conventionally, the measurement of the gradient of such a pipe is performed, for example, as shown in FIG. 6, in a state where one end of the level 11 is in contact with the pipe 13 and the other end of the level 11 is perpendicular to the pipe 13. Distance H
Is measured, and this vertical distance H is divided by the total length L of the level 11.

[Problems to be solved by the device]

However, in such a conventional gradient measuring method, it is very difficult to accurately determine the vertical distance H, and as a result, the gradient cannot be accurately calculated, and the vertical distance H is measured and the gradient is calculated. There was a problem that a lot of time was required for this.

Therefore, as described in Japanese Utility Model Laid-Open No. 58-80514, a split groove into which a subscale is fitted is provided at one end of a square pipe main scale having a level on the upper surface, and the split groove is guided. As a graduation, a vernier scale is provided so that it can slide vertically at a right angle to the main scale, and a fixing bolt that fixes the vernier scale from the side surface of the end of the main scale to the split groove, and the road scale with a length scale displayed Total is proposed.

However, in the road surface gradiometer described in Japanese Utility Model Laid-Open No. 58-80514, since the secondary scale is fitted into the split groove provided at one end of the main scale made of square pipe, the accuracy of the upper and lower ends of the split groove depends on the accuracy. Since the angle of the vernier scale with respect to the main scale is affected, it is difficult to fix the vernier scale at an accurate angle.

The present invention solves the above-mentioned problems and is simple and
An object of the present invention is to provide a gradient measuring device capable of measuring the gradient of a member quickly and with high accuracy.

[Means for Solving the Problems]

The gradient measuring device according to the present invention comprises a spirit level body having an E-shaped cross section on which a bubble tube is arranged, and an L-shaped spirit level body fixed to both sides of a vertical wall portion at one end of the spirit level body by a bolt. An end plate fixed to the end surface of the bracket by a bolt, and a slide movably mounted on the end plate, arranged so as to project downward from one end of the spirit level body, and having a lower end abutted against the object to be measured. A member and two butterfly bolts that are screwed into the screw holes formed in the end plate through the elongated holes formed in the vertical direction of the slide member to support and fix the slide member movably in the vertical direction. A slope scale engraved on the slide member or the spirit level body side, and a base line engraved on the spirit level body side or the slide member.

[Action]

In the present invention, the one end of the spirit level body and the lower end of the slide member are brought into contact with the object to be measured, and the other end of the spirit level body is moved up and down. Fix it to the level body, and in this state,
The gradient of the measured object is measured by reading the gradient scale corresponding to the position of the base line.

〔Example〕

Hereinafter, the details of the present invention will be described with reference to the embodiments shown in the drawings.

1 to 3 show an embodiment of the gradient measuring device of the present invention, in which reference numeral 21 denotes a level body having a V-shaped cross section on which a bubble tube 23 is arranged. There is.

An L-shaped bracket 25 is fixed by one bolt 27 to both sides of the vertical wall portion 21a at one end of the level body 21, and four end plates 29 are provided on the end surface 25a of the bracket 25. It is fixed by a bolt 31 of.

A slide member 33, which is arranged so as to project downward from the spirit level main body 21 and whose lower end is brought into contact with the measured object, is in contact with the end plate 29.

An elongated hole 35 is formed in the slide member 33 in the vertical direction, and the slide member 33 is provided with a support member composed of two wing bolts 37 that are respectively screwed into screw holes 30 formed in the end plate 29. The main body 21 is supported so as to be vertically movable.

A gradient scale 39 is engraved on the side surface of the slide member 33, and a base line 41 is engraved on the end plate 29.

The gradient scale 39 is set by dividing the downward projection length H of the slide member 33 by the total length L of the level body 21 as shown in FIG. The value of the gradient scale 39 to be set is the gradient H / L, for example, 1/5.
It is set to 0, 1/100, etc.

In the gradient measuring device configured as described above, the gradient of the measured object 13 such as a pipe is measured, for example, as shown in FIG. With the lower end of 33 in contact, the other end of the level body 21 is moved up and down while looking at the bubble tube 23, and when the level body 21 is horizontal, the wing bolt 37 is tightened and the slide member 33 is attached. It is carried out by fixing the level gauge body 21 and reading the gradient scale 39 corresponding to the position of the base line 41 in this state.

Then, in the gradient measuring device configured as described above,
Two slide members 33 are provided on the end plate 29 fixed by bolts 31 on the end faces 25a of a pair of L-shaped brackets 25 fixed to both sides of the vertical wall portion 21a at one end of the spirit level body 21. Since it is supported and fixed via the butterfly bolts 37, by loosening the two butterfly bolts 37, it is possible to measure the gradient of the measured object 13 only by moving the slide member 33 up and down on the end plate 29. Because you can
It is possible to measure the slope of the member simply, quickly, and with high accuracy.

The gradient measuring device configured as described above can also be used as a reference gauge for the gradient by fixing the slide member 33 to a predetermined position, that is, a position having a predetermined gradient in advance. Becomes

[Effect of device]

As described above, according to the present invention, the spirit level body having the V-shaped cross-section with the bubble tube disposed on the upper surface thereof and the L-shape fixed to the both sides of the vertical wall portion at one end of the spirit level body by the bolts are provided. On the end face of the bracket, an end plate fixed by bolts, movably mounted on the end plate, arranged so as to project downward from one end of the spirit level body, and abutting the lower end against the object to be measured. Two butterfly bolts that are screwed into a screw hole formed in the end plate through a slide member and an elongated hole formed in the vertical direction of the slide member to support and fix the slide member movably in the vertical direction. And a slant scale engraved on the slide member or the spirit level body side, and a base line engraved on the spirit level body side or the slide member, so as to support and fix the slide member 2 Two butterfly bolts The slide member can be moved vertically on the end plate by simply screwing it into the two screw holes provided on the end plate that is firmly fixed to the standard body and loosening when moving the slide member in the vertical direction. In addition, the slide member can be always fixed in parallel with the end plate. Therefore, it is possible to eliminate a problem such as a conventional road surface gradiometer which is adversely affected by the accuracy of the split groove into which the vernier is fitted.

As described above, according to the present invention, there is an advantage that the gradient of the member can be measured easily, quickly, and with high accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the gradient measuring device of the present invention. FIG. 2 is a side view showing the slide member side of FIG. 1 in an enlarged manner. FIG. 3 is an end view taken along the line III-III in FIG. FIG. 4 is an explanatory view showing a method of setting the gradient scale of the gradient measuring device of FIG. FIG. 5 is an explanatory view showing a conventional gradient measuring method. [Explanation of main part symbols] 21 ... Level body 23 ... Bubble tube 33 ... Slide member 39 ... Gradient scale 41 ... Base line.

Claims (1)

[Scope of utility model registration request] 1. A spirit level main body (21) having a V-shaped cross section on which a bubble tube (23) is arranged, and bolts on both sides of a vertical wall (21a) at one end of the spirit level main body (21). On the end face (25a) of the L-shaped bracket (25) fixed by (27), the bolt (31)
And an end plate (29) fixed by means of the end plate (29) movably mounted on the end plate (29) and projecting downward from one end of the spirit level body (21) so that the lower end is brought into contact with the object to be measured. Sliding member (33)
And the two screw holes (30) formed in the end plate (29) through the elongated holes (35) formed in the vertical direction of the slide member (33), respectively, and the slide member (3
3) Two wing bolts (37) for movably supporting and fixing the same in the vertical direction, a slope scale (39) engraved on the slide member (33) or the level body (21), and the level Device body (21) side or slide member (33)
And a base line (41) engraved in the gradient measuring device.