JP3526288B2 - Scale plate device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale plate device,
In particular, it relates to a scale plate device used for finish management of road surface construction.

[0002]

2. Description of the Related Art In pavement road construction as shown in FIG. 5, a crushed stone base 81 on the road surface is replaced with left and right sidewalk curbs 6A, 6B.
It is formed into an inclined surface having a predetermined gradient with the center in the middle as an apex, and a base asphalt layer or a surface asphalt layer is laminated thereon with a constant thickness (shown by a chain line) to have an inclined surface similar to the base 81 described above. Finished on a paved road. When posting this finishing process in management reports, etc., as shown in the figure, on the sidewalk curbs 6A, 6B on the left and right sides, in order to show that the base 81 and each asphalt layer are sloped with a predetermined slope. Long scale-shaped scale plates 82 and 83 are erected on each of them, and the measurement string 5 is stretched between them at a constant height. (Shown), or standing up to an appropriate position (shown by a chain line) between the center and the sidewalk curbs 6A and 6B, and the photograph is taken in a state where the scale position through which the measurement string 5 passes can be read.

That is, the distance between the left and right sidewalk curbs 6A and 6B is L, and the height H of the measuring string 5 on the sidewalk curbs 6A and 6B of known height and the positions L / 4 and L / 2. If the heights H1 and H2 of the measurement cord 5 in step 1 can be read from the scale plate 7, it can be determined whether the base 81 or the like has a predetermined slope.

[0004]

However, in the above-mentioned conventional method, the scale plates 82 and 83 are erected on the left and right sidewalk curbs 6A and 6B, respectively, to hold the measuring cord 5 at a predetermined scale position. There is a problem that three workers M1 to M3 are required to stand and hold the other scale plate 7 at a central position between the sidewalk curbs 6A and 6B, which results in a high cost.

Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide a scale plate device capable of reducing the cost by reducing the labor required for finishing management of road surface work.

[0006]

In order to achieve the above object, the scale plate device of the first aspect of the present invention is supported by a base (3) in an upright posture, is graduated in the longitudinal direction, and is measured. A first scale plate (2A) provided with a winding portion (4) for winding the cord (5) and a pull-out guide portion (22) for pulling out the measurement cord (5) from a predetermined scale position; The table (3) is supported in an upright posture and is graduated in the longitudinal direction, and a locking portion (23) for locking the tip of the drawn measurement string (5) is provided at a predetermined graduation position. Second
And a scale plate (2B).

In the first aspect of the present invention, the first and second scale plates are respectively supported by the base in a standing posture. Therefore, for example, these are made to stand on the left and right sidewalk curbs, the measurement string is pulled out from the first scale plate by a necessary amount, and the tip thereof is locked to the second scale plate. As described in the prior art while holding another scale plate, place it at each position between the left and right sidewalk curbs, and read the height of the measurement cord at each of these positions to determine the crushed stone base etc. It is possible to easily determine whether or not there is a slope. As described above, since only one worker can manage the finishing of the crushed stone foundation of the pavement, the management cost can be significantly reduced.

In the second aspect of the present invention, the base (3) is provided with the first
A holding piece (33) for holding the scale plate (2A) to the second scale plate (2B) is provided, and the holding piece (33) is rotatable. According to the second aspect of the present invention, even if the surface on which the base is placed is inclined, the scale plate can be erected in a substantially vertical posture by rotating the holding piece holding each scale plate to an appropriate angle. it can.

The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments described later.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the external appearance of a scale plate device. The scale plate device includes a pair of scale tools 1A and 1B. The scale tool 1A includes a vertically long scale plate 2A and a base 3 that supports the scale plate 2A in an upright posture. The scale plate 2A is a rectangular long plate, and scales 21 are attached to both side edges in the longitudinal direction, and 10 cm, 20 cm, 30 cm, 40 cm, 50 cm from the lower end of the scale plate 2A at the center thereof.
The numbers “1” to “5” indicating that the position is cm are attached. Directly above each of the numbers "1" to "4", a drawing guide hole 22 penetrating the plate surface is formed at each height position of 10 cm, 20 cm, 30 cm, and 40 cm.

The base 3 for supporting the scale plate 2A is composed of a holder 31 shown in FIG. 2 and a weight 32 shown in FIG. The holding body 31 abuts a pair of holding pieces 33, 34 formed in a substantially U-shape in plan view back to back to form each holding piece 3
A pair of holding pieces 33, 34 are rotatably coupled to each other by a pin member 35 penetrating the centers of the back plates 331, 341 of 3, 34. The back plate 331 of the holding piece 33 is provided with a plurality of through holes 332 at equal intervals around the pin member 35,
On the other hand, the back plate 341 of the holding piece 34 is provided with a long plate-shaped leaf spring 36, the center of which is fixed to the pin member 35, and the circular convex portions 361 at both ends of the leaf spring 3 are located at symmetrical positions in the radial direction.
Both holding pieces 33 and 34 are positioned by being fitted into 32. Therefore, by rotating the holding piece 33 relative to the holding piece 34 in a vertical plane and fitting the circular convex portion 361 into the new hole 332, both holding pieces 33,
The relative posture of 34 can be changed.

The weight body 32 is made of a substantially rectangular parallelepiped iron box in which lead is enclosed to have a sufficient weight. A concave groove 321 extending in the vertical direction is formed on both side surfaces of one end portion of the weight body 32. There is. As shown in FIG. 1, the scale plate 2 has a holding piece 3 at its lower end.
3 is inserted into the U-shaped space and is held in a standing posture, while the holding groove 34 is inserted into the U-shaped space.
One end portion 322 of the weight body 32 is fitted so that (FIG. 3) is matched with the opening edge 342 (FIG. 2) of the holding piece 34. With such a base 3, the scale plate 2A is self-supporting. The scale 1B shown in FIG. 1 has the same structure as that of the scale 1A, and a scale plate 2B is self-supported by a base 3.
The same parts of the scale plate 2B as those of the scale plate 2A are designated by the same reference numerals. The scale plate 2B is provided with a locking hole 23 penetrating the plate surface at the same position as the drawer guide hole 22 provided in the scale plate 2A.

The scale plate 2A of the scale 1A has a T on its top surface.
A winding body 4 having a character shape is provided upright, and a measuring cord 5 having a sufficient length is wound around the outer circumference of the leg of the winding body 4. In the present embodiment, the measurement string 5 uses a rubber string that is elastically expandable. The measurement string 5 is pulled out from the winding body 4 to the back surface side of the scale plate 2, and is pulled out forward from an appropriate pull-out guide hole 22 (which is at a height position of 20 cm in this embodiment) to face the scale 1B. And is inserted into a locking hole 23 of the scale plate 2B of the scale tool 1B at the same height as the drawer guide hole 22.
A knot having a diameter larger than that of the locking hole 23 is formed at the tip of the locking hole 23 and is locked to the peripheral edge of the locking hole 23. As a result, the measuring cord 5 is stretched at a constant height between the scale tools 1A and 1B which are self-supporting and are located on the left and right.

When controlling the inclined shape of the crushed stone base of a pavement using such a scale plate device, as shown in FIG.
As shown in FIG. 1, the scale 1A is made to stand on one sidewalk curb 6A, and the measurement cord 5 is pulled out from this side by a necessary amount, and the tip thereof is made to stand on the other sidewalk curb 6B.
, And the measurement string 5 is stretched between them at a predetermined height H. In this case, even if the upper surfaces of the sidewalk curbs 6A and 6B are inclined, the holding piece 34 (FIG. 1) attached to the weight 32 is provided with the concave groove 3
21 (FIG. 3), and slightly rotating the holding piece 33 (FIG. 2) holding the scale plates 2A and 2B in this state in a vertical plane with respect to the holding piece 34. Thus, the scale plates 2A and 2B can be erected in a substantially vertical posture. Then, the worker M holds the other scale plate 7 by himself and sets it to L / L as described in the related art.
4, L / 2 (L is the distance between the left and right sidewalk curbs 6A and 6B)
The height H of the measuring cord 5 at each of these positions.
If 1 and H2 can be read from the scale plate 7, it can be determined whether the crushed stone base 81 or the like has a predetermined slope. As described above, according to the scale plate device of the present embodiment, since only one worker can manage the finishing of the crushed stone base 81 of the pavement, the management cost can be significantly reduced.

In place of the winding body 4 having the structure for winding the measuring cord 5 in the above embodiment, a structure in which the measuring cord is wound by a pulley which is rotationally biased may be used.
In the above-described embodiment, the guide portion is provided with the simple withdrawal guide hole 22, but the present invention is not limited to this, and it has a function of horizontally guiding the measurement cord drawn from the winding portion at a predetermined height position. If so, the structure is not particularly limited. Further, although the simple locking hole 23 is provided as the locking portion and the knot is formed at the tip of the pulled-out measurement string to lock it, the present invention is not limited to this, and the tip of the pulled-out measurement string is not limited to this. The structure is not particularly limited as long as it can be locked at a predetermined height position. Further, the scale plate device of the present invention is not limited to the finish management of the road surface work described above, but can be used for a wide range of purposes such as depth control in groove formation work and manhole installation height control.

[0016]

As described above, the scale plate device of the present invention is
It is possible to reduce the cost by saving the finishing management of road surface work.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a scale plate device showing an embodiment of the present invention.

FIG. 2 is a perspective view of a holding body.

FIG. 3 is a perspective view of a weight body.

FIG. 4 is a side view showing a state in which finish management of road surface construction is performed using a scale plate device.

FIG. 5 is a side view showing a state where finish control of conventional road surface construction is being performed.

[Explanation of symbols]

1A, 1B ... Scale tool, 2A, 2B ... Scale plate, 22 ... Drawer guide hole, 23 ... Locking hole, 3 ... Base, 31 ... Holding body, 3
2 ... Weight, 33 ... Holding piece, 4 ... Winding body, 5 ... Measuring string.

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Claims (2)

(57) [Claims] 1. A pedestal supported by a base in a standing posture, with a graduation in the longitudinal direction, a winding portion for winding the measurement cord, and a pull-out guide portion for pulling out the measurement cord from a predetermined graduation position. The first graduation plate provided and a pedestal that is supported in an upright posture and has a graduation in the longitudinal direction, and a locking portion that locks the tip of the drawn measurement string at a predetermined graduation position. A scale plate device comprising a second scale plate provided. 2. The scale plate device according to claim 1, wherein the base is provided with a holding piece for holding the first scale plate or the second scale plate, and the holding piece is rotatable. .