JP2011214953A - Slump gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slump gauge excellent in handling property.SOLUTION: The slump gauge 1 includes: a support plate 10; a scale rod 2 vertically and upwardly extended from the support plate; and a support rod 3 attached to the scale rod to vertically and flexibly moved relative to the scale rod. The support rod is constituted of a base end 3a attached to the scale rod, and a distal end 3b attached to the base end. The distal end is fixed to the base end in a horizontal state and attached to the base end to be vertically turned.

Description

  The present invention relates to a slump gauge used for measuring a slump in a slump test.

Conventionally, the slump test has been widely used as a representative test method for evaluating the consistency of concrete. Usually, this slump test is performed based on the method prescribed in JIS A1101 “Concrete slump test method”.
Specifically, a test container in the shape of a truncated cone called a slump cone is placed on a horizontally placed flat plate, and after putting fresh concrete inside and protruding with a stick, the top surface of the concrete is placed on the top of the slump cone. Make sure to match. Then, the slump cone is gently pulled up in the vertical direction, and how much the upper surface of the concrete is lowered is measured in units of 0.5 cm.
If the value of this slump is large, it is evaluated that the fluidity of the concrete is high, and in the field of construction and the like, those of about 15 cm to 18 cm are often used.

By the way, about the measuring instrument used for such a slump test, although a slump cone and a stick are prescribed | regulated by JIS, it is not prescribed | regulated about other instruments.
Among them, a slump gauge 101 as shown in FIG. 5 is generally used for an instrument (hereinafter referred to as a slump gauge) for measuring the height of the slump (falling distance of the concrete upper surface). Specifically, the slump gauge 101 includes a support plate 110, a scale bar 102 fixed so as to extend vertically upward from the support plate 110, and a horizontal axis attached to the scale bar 102 so as to be vertically movable. An indicator rod 103 and a fixture 104 for fixing the horizontal indicator rod 103 to the scale rod 102 are provided. When measuring the slump, the lower surface of the horizontal indicator rod 103 is fixed to the center of the upper surface of the concrete after the slump cone is pulled out, and the fall distance of the concrete by reading the scale of the scale rod 102 at that time, That is, the slump is measured.

  In addition, as the slump gauge, in Patent Document 1 below, it is possible to move the measurement surface of the horizontal indicator bar close to the bottom surface of the support plate so that slump can be measured even for high-flowing concrete. Slump gauges are also being considered.

JP 7-218500 A

  By the way, since the concrete slump test is often performed at the concrete placement site, it is necessary to carry the slump gauge as described above to the placement site. However, the conventional slump gauge has poor stability, and there is a risk that the instrument will be damaged by falling during transportation. Moreover, in order to prevent the fall during transportation, it is conceivable to remove the horizontal indicator bar 103 from the scale bar 102 and carry it, but in any case, it is inferior in handleability.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a slump gauge excellent in handleability.

  In view of the problems as described above, a slump gauge according to the present invention includes a support plate, a scale bar extending vertically upward from the support plate, and a support bar attached to the scale bar so as to be movable up and down. A slump gauge provided, wherein the support bar is composed of a base end part attached to the scale bar and a tip end part attached to the base end part, and the tip part is a base end part in a horizontal state. It is attached to the base end part so that it can be fixed to and can be turned up and down.

  According to the slump gauge having such a configuration, the support rod is composed of a base end portion attached to the scale rod and a tip end portion attached to the base end portion, and the tip end portion is rotatable in the vertical direction. By being pivotally supported by the base end as in the case of transportation, stability can be enhanced by directing the front end downward during transportation, etc., and damage to the instrument due to overturning can be prevented. . Further, since the distal end portion can be fixed to the proximal end portion in a horizontal state, when measuring the slump, it can be used in the same manner as a normal measuring instrument by fixing in the horizontal state.

  In addition, the slump gauge according to the present invention is preferably configured to be fixed to the base end portion in a state where the tip end portion is obliquely downward, and the tip end portion of the scale bar is in a horizontal state. A first scale corresponding to the slump measured by the support rod and a second scale corresponding to the slump measured by the support rod with the tip portion inclined obliquely downward are provided.

  According to the slump gauge having such a configuration, it is possible to measure the slump even in a state where the tip end portion is inclined downward. That is, when the tip is fixed in a state where the tip is directed obliquely downward, the scale rod is moved up and down to bring the tip of the support rod into contact with the top surface of the concrete, and the slump is measured by reading the second scale. Is possible. Therefore, it is possible to easily and accurately measure the slump even when it is difficult to measure the slump if the support bar remains horizontal, such as when the upper surface of the concrete is inclined.

  As described above, the slump gauge according to the present invention has an effect that it is extremely excellent in handleability.

The perspective view which showed the slump gauge of one Embodiment of this invention. The disassembled perspective view which expanded and showed the connection part of the base end part and front-end | tip part of a support bar. In the slump gauge of this embodiment, the perspective view which showed the state which fixed the front-end | tip part diagonally downward 45 degree | times. The perspective view which showed the state which fixed the front-end | tip part toward the vertically downward direction in the slump gauge of this embodiment. The perspective view which showed the conventional slump gauge measuring instrument.

  Hereinafter, a slump gauge according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the slump gauge 1 of this embodiment includes a support plate 10, a scale bar 2 provided so as to extend vertically upward from the support plate 10, and a vertical movement with respect to the scale bar 2. The support bar 3 is attached to the scale bar 2 so as to be freely configured.

  The support bar 3 is composed of a base end part 3a having a circular pipe part through which the scale bar 2 can be inserted, and a front end part 3b attached to the base end part 3a. The screw hole provided in the side surface of the circular pipe part is screwed with a spiral body 4 as a fixture, and the base end part 3a is attached to the scale bar 2 by bringing the spiral body 4 into contact with the scale bar 2. It is configured to be fixed at an arbitrary height.

  In addition to the normal scale 2a, the scale bar 2 is engraved with a second scale 2b described later.

  The distal end portion 3b of the support rod 3 can be fixed to the proximal end portion 3a in a horizontal state and is pivotally supported by the proximal end portion 3a so as to be rotatable in the vertical direction. Further, the support bar 3 can be fixed to the base end portion 3a even when the distal end portion 3b is rotated to be 45 degrees downward from the horizontal plane and 90 degrees downward from the horizontal plane. It is configured.

  FIG. 2 is an exploded perspective view showing an enlarged connection portion between the base end portion 3 a and the tip end portion 3 b of the support rod 3. As shown in FIG. 2, through holes 31 and 31 are formed in the base end portion 3a and the tip end portion 3b in the horizontal direction, respectively, and the base end portion 3a and the tip end are penetrated through the through holes 31 and 31, respectively. A fastener is provided for abutting and tightening the portion 3b. In the present embodiment, the fastener includes a wing bolt 8a and a wing nut 8b that are inserted into the through hole 31 and screwed together, and a washer 8c.

  Moreover, as shown in FIG. 2, the base end part 3a and the front-end | tip part 3b are provided with the angle adjustment part for adjusting both to a predetermined angle. In the present embodiment, as the angle adjusting portion, the base end portion 3a is formed with a long protrusion 6 extending vertically downward at the vertically lower position of the through hole 31, while the distal end portion 3b Long holes 7a, 7b, and 7c that extend radially from the through hole 31 are formed in a vertically downward position, an obliquely 45 degree downward position, and a horizontal position with respect to the through hole 31, respectively.

  That is, if the butterfly bolt 8a and the butterfly nut 8b are fastened and fixed in a state in which the elongated protrusion 6 of the base end portion 3a and the elongated hole 7a of the distal end portion 3b are fitted together, the support rod 3 is fixed as shown in FIG. It can be set as the normal use state fixed toward the horizontal direction.

  Also, once the wing bolt 8a and the wing nut 8b are loosened, the elongated projection 6 of the base end 3a is fitted into the elongated slot 7b of the distal end 3b, and again the wing bolt 8a and the wing nut 8b. 3 is tightened and fixed, as shown in FIG. 3, the tip 3b of the support bar 3 can be fixed obliquely downward by 45 degrees.

  When the tip portion 3b is fixed 45 degrees obliquely downward, the slump value can be read by reading the second scale 2b engraved on the scale bar 2. That is, the second scale 2b is a scale that is attached in consideration of the descending amount of the tip portion when the tip portion 3b is inclined downward by 45 degrees. Therefore, the measurer can immediately read the slump value even in a state where the tip portion 3b is inclined 45 degrees downward.

Similarly, the butterfly bolt 8a and the butterfly nut 8b are loosened, and the long projection 6 of the base end 3a is fitted into the long elongated hole 7c of the distal end 3b. If the nut 8b is tightened and fixed, the tip 3b of the support bar 3 can be fixed vertically downward as shown in FIG.
FIG. 4 shows a state in which the support bar 3 is rotated 180 degrees in the horizontal direction and positioned on the upper part of the support plate 10. By such a state, the stability of the slump gauge is improved. As the storage space is increased, the storage space is reduced, so that it is difficult to fall down during transportation, and handling is greatly improved.

The slump gauge according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.
For example, in the above embodiment, the fixing angle of the tip is configured to be fixed in three states of horizontal, 45 degrees obliquely below and vertically below, but if it can be fixed at least in a horizontal state, it can be used for normal slump measurement. Can be transported and stored easily by rotating in the vertical direction. Alternatively, in addition to or instead of the fixed state of 45 degrees below and vertically below as in the present embodiment, one or more fixed states can be taken.

  Moreover, in the said embodiment, in order to fix the angle of a front-end | tip part, although the angle adjustment part which combined the elongate protrusion and the long hole was provided, it replaces with this and arbitrary angle adjustment mechanisms are employable. Furthermore, in the said embodiment, although the wing bolt and the wing nut were used as a fastener for fixing the angle of a front-end | tip part with respect to a base end part, it replaces with this and can employ | adopt arbitrary fastening means.

1 Slump gauge 2 Scale bar 2a Normal scale 2b Second scale 6 Long protrusion (angle adjustment part)
7a, 7b, 7c Slot (angle adjustment part)
8a Wing bolt 8b Wing nut 8c Washer 3 Support rod 3a Base end 3b Tip 4 Spiral body 10 Support plate 31 Through hole 101 Conventional slump gauge

Claims (2)

A slump gauge comprising a support plate, a scale bar extending vertically upward from the support plate, and a support bar attached to the scale bar so as to be movable up and down,
The support bar is composed of a base end part attached to the scale bar, and a front end part attached to the base end part,
The slump gauge characterized by being attached to a base end part so that a front-end | tip part can be fixed to a base end part in a horizontal state, and can be rotated to an up-down direction.   It is comprised so that it can fix to the said base end part in the state in which the said front-end | tip part turned diagonally downward, The said scale bar is the 1st scale corresponding to the slump measured with the support bar whose front-end | tip part is a horizontal state. 2. A slump gauge according to claim 1, further comprising a second scale corresponding to a slump measured with a support rod having a tip end directed obliquely downward.

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