JPS5990031A - Apparatus for measuring weight - Google Patents

Abstract

PURPOSE:To improve an efficiency of an operation calculating volume and specific gravity of a material by constituting the titled apparatus wherein an upper and under hooks are connected with a connecting material made of shape memory alloy as a hanging tool of a balance, and measuring continuously, rapidly and exactly the weights of the material to be measured in the air and under the water by the heating and cooling operations of the connecting material. CONSTITUTION:The hanging tool 6 is constituted by connecting the upper hook 7 fixed to the balance 5 and the under hook 9 detaining the material 8 to be measured with the connecting material 10 made of shape memory alloy wound in coil shape. When the material 8 is detained to the raised under hook 9 and measurement start button at a display part 13 is pushed, the weight WA in air is measured by the balance 5 in this state. When an infrared ray heater 11 is turned on, the material 8 is lowered together with the hook 9 and submerged under the water 3 of a water vessel 2 because the connecting material 10 is contracted in the axial direction. The weight WW under the water is measured by the balance 5 automatically in this state. The measured weights WA and WW are calculated by a computer 12 incorporated in the display device, the volume V and the specific gravity S are displayed on the display device 13 and recorded by a printer 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a measuring device suitable for determining the volume and specific gravity of an object such as a small piece of rubber.

[Prior art]

In general, the volume and specific gravity of an object as shown in ``2'' are as follows: Volume in air: WA Weight in water: WW (Specific gravity of water is assumed to be 1), Volume: V = WA = WW-+11 Ratio @: S =WA/V,,,
It is calculated by +21.

By the way, in the past, measurements were carried out separately for the aerial and underwater devices using dedicated scales for each, making the measurement process twice as much work. was there.

[Purpose of the invention]

The present invention has been made in view of the conventional problems,
The purpose is to improve work efficiency by making it possible to continuously (quickly) and accurately measure the amount of air and water in water using a single scale.

[Structure of the invention]

For this reason, the present invention provides a hanger for a weighing device, in which a part of the hook fixed to the weighing device and a lower hook that locks the object to be measured are connected in the vertical direction (this is made of a shape memory material that can be expanded and contracted). A heater for heating the connecting member is placed on the side of the hanging tool, and a water tank is placed below the hanging tool. ↓Measure M° in the air when the knot 4-1 is contracted, and measure the weight in the water when the 111y knot 4-1 is expanded.

〔Example〕

Embodiments of the invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a transparent water tank 2 is arranged on the top of a base 1, and the water tank 2 is filled with water 3 having a specific gravity of 1 at a predetermined water level.

A transparent windshield case 4 is provided surrounding the inner space of the water tank 2 and placed on the second part of the base 1, and a weighing device 5 is attached to the second part of the windshield case 4. A hanging tool 6 of the vessel 5 is inserted through the windshield case 4 and protrudes directly into the aquarium 2.

As shown in FIG. 2, the above-mentioned hanging tool 6 is made of a shape-memory alloy that is wound into a coil shape and includes a two-part hook 7 that is fixed to the weighing device 5 and a lower hook 9 that locks the object to be measured 8. Connecting member 1
Configure by connecting with 0.

Shape memory alloy is a known special alloy that has physical properties that change its shape at room temperature and when heated. When the hook 9 is bent and positioned in the air above the water level of the aquarium 2 (the state shown in FIG. This is set so that the lower hook 9 is lowered and submerged in water in the water tank 2.

With the above configuration, when the object to be measured 8 is locked to the bent lower hook 9 and the measurement start button on the display 13 is pressed, the weighing device 5 displays the air rti[1:WA , and when the infrared heater J1 is turned on, the connecting part 44' 10 contracts in the axial direction, and the object to be measured 8 also lowers together with the lower hook 9 and is submerged in the water 3 of the water tank 2, resulting in this state. Then, the underwater depreciation WW is automatically measured using the weighing device 5.

The measured aerial weight WA and underwater @ volume WW are calculated by the computer 12 built in the display unit based on the above-mentioned fi+, +21 formula, the volume V and specific gravity S are displayed on the display unit 13, and the printer 14 recorded.

In the above embodiment, in order to confirm that the object to be measured 8 is fully submerged in water, the position sensor 4 detects the lowered position of the hanging tool 6 using a photo sensor, (electrical sensor, etc.).
When the submersion detection signal is output, the underwater mass WW is detected by
You can strain it once to measure.

Further, if the infrared heater 11 is set to focus on the position of the connecting member 10 of the hanging tool 6, the part of the song can be Ir++
It no longer gets heated, and a heater for the contents can be used.

Furthermore, if the object to be measured 8 is not wet enough, JjI
The object to be measured 8 may be taken in and out of the water by repeating heating and cooling (air cooling may be performed by blowing air) until the bubbles on the surface subside for one month.

FIG. 3 shows another embodiment of the hanging device 16, in which a flange portion 91 of the lower hook 9 is attached to the rod portion 7a of the two-part hook 7.
1 are slidably fitted together, and the upper fixing flange portion 7b of the partial hook 7 and the flange portion 9a of the lower hook 9 are connected by the coil spring 15 for upward biasing, and the lower hook 9 is If the flange portion 9a and the lower fixing flange portion 9c of the upper hook 7 are configured with the same coiled connecting portion 140 as described above, the lower hook 9 is positioned at one mid-air position by the biasing force of the coil spring 15 at room temperature, and is heated. At this time, the contraction force in the axial direction of the connecting member 12 overcomes the force, and the lower hook 9 lowers and becomes submerged in the water.

〔Effect of the invention〕

As is clear from the above description, the present invention employs a configuration in which an upper hook and a lower hook are connected by a connecting member made of a shape memory alloy as a hanging device for a weighing device. By heating and cooling the part H, the aerial and underwater tombs of the object to be measured can be measured continuously, quickly and accurately. You will be able to move towards -1-.

[Brief explanation of drawings]

FIG. 1 is a side view of the heavy duty measuring device, and FIGS. 2 and 3 are side views of the hanging tool. 2...Aquarium, 3...Water, 4...Windshield case, 5...
... Weighing device, 6, 16... Hanging tool, 7...-I part hook, 8... Measured object, 9... To part hook, 10.
...Connecting member, 11...Infrared heater, 12...Computer, 13...Display device, 14...Printer,
15...Coil.

Claims (1)

[Claims] (1) A small quantity measuring device for determining the volume and ratio tlj of the object to be measured by measuring the aerial vocalization of the object to be measured and the underwater device with a weighing device, the hanging tool for the weighing device being , the upper hook that is fixed to the scale and the lower hook that locks the object to be measured are extended and contracted downward =
It is a connecting member made of a shape memory alloy with a high capacity of 300 mm, and is constructed by connecting it with a Q3 connection.A heater is placed on the side of the hanging device (to heat the connecting portion), and a water tank is placed below the hanging device. Shi-C
,Measure 14 yen in the air when the connecting part is contracted, 111j
A several-shu measuring device characterized by measuring 1 F year underwater when a connecting member is extended.