JPH0448481Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a measuring adapter.

(Prior art) As shown in Fig. 4, in a conventional measurement adapter, a spindle S passes through a cylindrical displacement meter H, and this spindle is displaced against a spring provided inside the displacement meter. It is capable of retracting to the inside of the sensor, and the amount of movement (displacement) of the spindle is sensed by a sensor housed within the displacement sensor and measured by a measuring device connected to this sensor via a lead wire. To use this adapter, set the measurement adapter diagonally on the concrete test specimen T as shown in Figure 5, connect one end of the wire W to the tip of the spindle S of each adapter, and connect the other end to the test specimen. Hook it on the corner, connect one end of the wire Wa to the rear end of the spindle, wrap the other end of the wire around the pulley K outside the corner of the test specimen, attach a weight G to the end,
This weight moves the spindle backward toward the rear end and sets it in a predetermined position. Then, for example, the test body T is compressed and deformed from the direction of the arrow, and this deformation causes the spindle S to move via the wire W, and the amount of displacement is measured by a measuring device through a sensor built in the displacement meter H. .

(Problem that the invention aims to solve) However, according to the conventional example, when using the measurement adapter, attached jigs such as pulleys and weights are required, which not only takes up space but also depends on the type of test specimen. In some cases, a large number of adapters are set up, and in this case, the attached jig may come into contact with nearby jigs during use, and contact may affect the amount of spindle displacement, resulting in inaccurate measurement values. I had a problem where I couldn't find the answer. Additionally, during the test, a portion of the concrete specimen fell off and pieces fell into the pulley, preventing the pulley from rotating smoothly and causing work to be interrupted.

The purpose of the present invention is to provide a measurement adapter that does not require many attached jigs as in the past, has a simple configuration, and allows measurement work to be performed accurately and easily without interruption. .

(Means for solving the problem) The measurement adapter of the present invention includes a displacement meter, a position adjustment body, a spindle, a spring receiver attached to the tip end of the spindle, and a spring receiver attached to the outside of the spindle. It is equipped with a wound spring. The displacement meter measures the longitudinal displacement of the spindle. The position adjustment body is
It is attached to the outer periphery of the displacement meter so as to be movable in the direction of displacement measurement, and is fixed at the measurement position. A portion of the spindle protrudes from the tip of the displacement meter, and a portion of the protruding portion can be retreated in a direction in which it is drawn into the displacement meter against the spring force of a spring provided inside the displacement meter. be. Both ends of the spring are latched and supported by the spring receiver and the position adjuster, respectively, and a tension spring force is applied between the spring receiver and the position adjuster. The spring within the displacement gauge and the spring disposed between the spring receiver and the position adjustment body are such that their spring forces are balanced so that the spindle can protrude from the tip of the displacement gauge. ing.

(Function) The tension of the wire is adjusted by moving the position adjustment body relative to the displacement gauge in its length direction to strengthen or weaken the spring force of the spring, and then attach the displacement gauge to the test specimen and attach the wire to the tip of the spindle. One end is connected and the other end is attached to the test piece, the test piece is compressed or pulled, and the amount of displacement of the spindle is measured via the wire.

(Example) An example of the present invention will be described below with reference to the drawings.

In Fig. 1, a mounting jig 2 is attached to the outer periphery of the rear end of the displacement meter 1, and a fixing plate 3 is connected to the lower end of the mounting jig, and this fixing plate is attached to the frame with bolts. attached to the body (not shown). The mounting jig 2 is slidable along the elongated hole 3a of the fixed plate. A position adjusting member 4 having a ring as shown in FIG. By loosening the bolt 5, this position adjustment body is released from being fixed to the displacement meter 1, and can be moved in the axial direction of the displacement meter (displacement measurement direction). Further, a spindle 6 projects a predetermined length from the tip of the displacement meter 1. The displacement meter 1 measures the displacement of the spindle in the longitudinal direction. The rear end of the spindle 6 is located inside the displacement meter 1, and the spindle 6 is placed in the displacement meter 1 against the spring force of a spring (not shown) inside the displacement meter.
It is possible to retreat in the direction of being drawn inward. The rear end of the spindle 6 is electrically connected to a sensor housed within the displacement meter 1. The tip of the spindle 6 is connected inside the spring receiver 7 to the rear end of a threaded rod 8 passing through the axis of the spring receiver. A latching hole 8a for latching one end of the wire 9 is bored at the tip of the threaded rod 8. Spring receiver 7
A coil spring 10 is wound around the outer periphery of the spindle 6 and the tip of the displacement meter 1 between the position adjustment body 5 and the position adjustment body 5, and both ends of this coil spring are latched to both the spring receiver and the position adjustment body. .

The coil spring 10 always biases the spindle 6 toward the left side in FIG. 1 against the spring force inside the displacement meter. This spring applies a tension spring force between the spring receiver 7 and the position adjustment body 5. The spring force of the coil spring 10 and the spring in the displacement gauge 1 is kept balanced so that the spindle can protrude from the tip of the displacement gauge. The outside of the coil spring 10 is covered with a bellows-shaped cover 11. A lead wire 12 is drawn out from the rear end of the displacement meter 1, and the lead wire is connected to a measuring device.

To explain how to use it, set the displacement meter 1 at a diagonal position of the specimen, for example, and attach the fixing plate 3.
is fixed to the frame with bolts, and the other end of the wire 9 is connected to the corner of the test specimen. After doing this, if the test specimen is repeatedly compressed or pulled from a predetermined direction,
As the gauge distance of the test object changes, the spindle 6 moves forward and backward from the tip of the displacement meter 1 via the wire 9,
The amount of displacement is measured by a measuring device.

The relationship between the tip of the spindle 1 and the spring receiver 7 is not limited to the above example. For example, as shown in FIG. The engagement protrusion 6a may be engaged. A protrusion 7a is provided on the outer axis of the spring receiver 7, and a latching hole 7a1 for the wire 9 is provided in this engagement protrusion.

(Effects of the invention) According to the invention, since there is no need for an attached jig like in the past, a large space is not taken up for measurement, and the measurement work can be done accurately and easily without being interrupted. The configuration is simple.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view, Figure 2 is a front view of the adjustment body, Figure 3 is a sectional view showing the relationship between the tip of the spindle and the receiver, Figure 4 is a front view of the conventional example, and Figure 5 is a front view of the conventional example. The figure is an explanatory diagram showing the state of use of a conventional example. 1...Displacement meter, 4...Position adjustment body, 5...Bolt, 6...Spindle, 7...Spring receiver, 9...
Wire, 10... Spring (coil spring).

Claims (1)

[Scope of Claim for Utility Model Registration] A displacement meter, a position adjustment body that is movably attached to the outer periphery of this displacement meter in the direction of displacement measurement and is fixed at a measurement position, and a portion thereof from the tip of the displacement meter. a spindle that protrudes and a part of the protruding part can be retracted in the direction of being drawn into the displacement meter against the spring force of a spring provided inside the displacement meter, and a spindle that is attached to the tip side of the spindle. A spring receiver is wound around the outside of the spindle, and both ends are supported in a latching state by the spring receiver and the position adjustment body, respectively. The displacement meter measures displacement in the longitudinal direction of the spindle, and the spring in the displacement meter and the spring receiver The measurement adapter is characterized in that the spring disposed between the position adjustment body and the spring has a balance of spring force so that the spindle can protrude from the tip of the displacement meter.