JPS58113724A - Weighing device - Google Patents

Abstract

PURPOSE:To exactly correct gravity, by constituting a correcting load cell for measuring a reference load, so that a thin part is provided on its correcting beam body, and a strain gauge is provided on this thin part. CONSTITUTION:A correction factor W/(D-E) against gravity acceleration is calculated and set by a processor, by a reference load W which a reference weight 34 has, a weight data output D from a correcting load cell in a non-load state, and a weight data output E from the correcting load cell 31 in a load state, and when weighing an object to be weighed, the weighing operation is executed by multiplying a load measured value from a load cell 27, by the set correction factor. In this regard, the correcting load cell 31 is usually in a non- load state, and the load state is formed by supplying electric power to electromagnetic attracting devices 33, 33.

Description

[Detailed description of the invention] The present invention relates to a weighing device that measures the mass of an article.

Measuring devices are used in various regions, but when the latitude station changes, the gravitational acceleration also changes, so the same needle metering device can be used with gravitational acceleration &
Accurate weighing cannot be performed if used with OJ% loading.

ζO good, the applicant has made a measuring noodle that can perform gravity correction. The fish ejecting part of this device is lowered into the wire. In the same figure, 1 is the noodle string base, 2 is the beam body 10# Kf
5 is load cell 2 with L/NGG 4... attached respectively.
via J! ! The wired fixing trays 1 are mutually attached to the beam body 1 supported cantilevered by the load cell 2.
9...
[Correction load cell made of sweetfish layer, 10 is Rohme cell 1
The 11L headstone is attached to the 11th part of the head, 11 is the reference weight attached to the equipment base JKI@, and this 0** position is due to the sudden distortion of the load cell 10 due to the influence of the degree of force processing. Indulge as a change in the output, and make corrections based on this [In other words, in the Kamezo Nageshun, first of all, with a low cell r or a hint that has not been breathed, this -1 #P cell 1 might be 01 Otori r- 9 pieces of mirrors included in the 9 pieces of equipment that do not accept the meeting in the evening 1 turtle - 1 ton of stones
) k1MJ regretfully attracted to Mufubu Tsuna 11 @<”CB-r*
krjLJ1@111111V/YuIkshi, 10 loads 1
Then, for one force acceleration jlltK, use Bisho simple k [and add this [#&. Then, when the needle amount is O#111IIIgIj from load cell 2, the value is equalized and the value is multiplied by the correction value k, which makes the needle J1 movement. In order to do so, it is a membership fee that the output of the correction load cell 1o is accurate. However, Hatake 1
In the load-bearing device shown in the figure, there is no change in the wall thickness of the beam body 1, and when the reference weight is in the mode, it is in the single mode and the mode, so it is not easily affected by changes in the position of the point of action of the reference weight 110#1. , more accurate output 1 without constant Ofi being generated
In order to obtain it, it takes about 5 minutes for the opening of the port, and since the Hiroki magnet 1tlf beam body IK is ordered by the needle device shown in Figure 1, the beam is heated by this electromagnet 100]. The body 1 and strain r-zot... are subjected to thermal radiation.

It has been found that the output from the correction load cell r is impaired by ζO. Furthermore, beam body C
The lead 12 is attached to the electromagnet 10 with the K right attached.
b TaJ6, t's "JP 411 J #e
- It affects the A body gos1 as a stress, so it is positive -! Output [I found out that even though I hate it, it's in the middle layer. Honkaji-Ni #i:, 0 fists 0% and was followed by t.

So, when I was fishing, I used a very strong force to attach the nail to the plow so that it could be held in place.

(below), Mokaji-Ichio and Koi [Gin 2-Kyo, 4-t] and the shrine will be explained.

mEPII is III & Maro pace space is Australian weighing material a
There are 22 tributary armored belts built in 2000.

This Cage*XX is a cantilever bi-extended nine-beam body JJK hole Jul installed on the M11 pace 21, and 4K is formed at the top and bottom of this hole 24.
・Each strain r-di Jgt [ff load cell 21
And then, the beam body 21's Ichiyuseki Takajoichi was handed down to Zheng 28 [through which the title was given to him by Ryosan rim and Kakuho 2]. 4
The number of strain r-zo2c... is pre- and di-igl-connected, and the value I is transferred from the 00M path to the above saucer lt.
A turtle pressure scale proportional to the lid ohm is applied. In addition,
In this embodiment, the strain r-gears 26 are provided by pasting.

Also shown in the figure is a single force correction detection mechanism for measuring the xoB reference load, which together with the above machine @XX forms the l amount detection section. This detection mechanism includes a 3° line, a correction load cell s1, a reference cylinder mounting table 32, and an electromagnetic suction device 57. JJ, a reference weight 14, and a spring 71.

The load cell 37 is provided with a positioning guide @5rt-, such as a KV-shaped haze, engraved on the upper surface of the tip end side of the beam body j- for correction, which is integrated with the beam body 2s supported cantilevered by the beam body 11, and this beam body J# A hole 11 is provided at the base end @ from the guide @sr of the hole J1, and a strain r-gear 4o is provided in each of the four wide inner portions 3# formed at the upper and lower portions of this hole J1. Four strain r-gears 4o... form a pre- and di-circuit and are connected to M wires, and a voltage signal exactly proportional to the reference load W applied to the reference weight 74 is output from this circuit. be treated. It is desirable that this output has an output state equivalent to or higher than that of the Kli upper port 21 which allows for more accurate correction. In addition, this strain r-zo 40... is also attached and provided. The electromagnetic suction devices ss and is are made of magnets, etc., and are attached to the device pace 21 via a support member 4 below the load cell 3. The reference barrel rest 32 is 'WL
It has mg & pull device 33 pipe device 33 shaft part JJm,
A nut 42 is fixed to the lower end of the shaft portion 321. This reference portion #1 mounting table 32 has a shaft portion Jjm penetrated by an electromagnetic suction device 3J below the load cell 3,
It is arranged so that it can move up and down. The reference valve body 34 is
It is placed on the reference barrel mount J2 and has an engaging portion 43 that fits into the positioning guide @sr from above. This engagement @ 4 JU has a V-shape, for example. Note that it is desirable to use a light-weight reference valve body S4 in order not to increase the weight of the entire device. Also, Hane 35! Th! Place space 21
The stage J2 is sandwiched between the stage J2 and the gate 42.

This spring 35 is attached to the standard valve mount SZ and the standard valve body 34.
is always urged upward, and the above-mentioned engaging portion 4J is pushed upwardly.
It is used to hold it in a state where it is removed from 37. In addition·
In this no-load state, the distance a between the #lI bottom of the guide $jF and the tip of the engaging part 43 is the distance a between the electromagnetic attraction device 3
3 and the reference valve body mounting table 32 (D) The dimensional relationship is set so that the distance between the lower surface of the weight mounting table becomes smaller. In addition, T in the figure keeps the reference valve body J40 mounting position constant. In the rounding, the dividing cylinder mounting part of the standard valve body mounting base S2 and the standard valve body S
4 shows the mutually fitting Q/# surfaces provided respectively.

Further, the reference valve body 34 is made of a non-magnetic material such as brass, aluminum, or steel. This prevents the reference valve body S4 from being magnetized by the electromagnetic suction devices sx and zsK.
Therefore, this is a highly preferable measure to prevent the influence of magnetic force on the correction load cell 31 and ensure more accurate output.

The measuring device described above calculates the reference load kW that the reference valve body 14 has and m from the correction load cell 31 in the non-regular state.
1tr - Load cell 3 for correction of evening output and load state
In addition to the x*r-tactor output E from
E) is calculated and summed up, and when measuring the amount of needle to be inserted, #11 JJ from the load cell 27 is multiplied by the correction factor k set by 2 above to calculate the j11 IJJ resistance.

The correction load cell 31 is always in the no-load state shown in FIGS. 2 and 4, and the #1 state shown in FIG. 3 is the electromagnetic attraction device JJ.

It is formed by energizing aS. In other words, upper E iron@s
Due to the excitation of z and ss, the reference cylinder mounting base 32 is activated by the spring 35.
Because it is moved downward against the push-up blade, the reference amount p14
34's engagement part 43 is at the position Wt of the correction load cell 31, the monkey fitted to the selection guide @sr, and the reference half body J4 is suspended by the correction beam body 36 according to the dimensional relationship of s and b mentioned above. Ru.

In this way, the reference #*W is loaded onto the correction beam body sg. In addition, when you demagnetize the electric ag & mounting Wsx+S3, the first & semi-minutes HsJ4 are the standard minutes when the spring SSOS is pushed up! I
I4 is placed on the racket stand S2, and its engaging portion 4S
is away from the above guide @sr, so the correction load cell 3
1 is a no-load state.

In addition, in the above embodiment, the correction beam body S6 was provided extending integrally from the beam body 2S, but this beam body 36
may be formed separately from the beam body 23 and cantilever-supported on the beam body 2J by screws or the like.Before, the correction beam body 36 can be cantilever-supported on the device pace 21 separately from the beam body. It's 4 good. Furthermore, in the above embodiment, the spring J
J is sandwiched between the electromagnetic suction device 3J and the device pace 21, but instead of this, it may be sandwiched between the top surface of the electromagnetic suction device 31 and the bottom surface of the weight mounting base 320. In this case, it does not matter whether or not there is an axis 512m of the reference barrel mount S2; one side of the positioning guide @JF may be vertical instead of an inclined surface; in this case, the other surface may be an inclined surface or an arcuate surface; If the engaging portion 4J also has a tapered tip, it is not limited to the shape of the above embodiment. Further, in the above embodiment, a separately molded engaging portion 43flft is attached to the reference weight 34, but these may be integrally molded. In addition, in carrying out the present invention, as long as it does not go against the gist of the invention, equipment paces, lid-resistant inspection field structure, beam body for correction of l quantity correction information mechanism, positioning guide groove, thin wall part, The specific structure, shape, position, etc. of the strain r-no, load cell, reference valve body rail, electromagnetic suction device, reference weight, engaging portion, and spring are not limited to the above-mentioned examples and may be modified in extreme manner. Of course, it can be implemented by configuring it as follows.

The present invention as discussed above is based on the structure described in the claims above. According to the invention, therefore, the group *#
The correction load cell for measuring 1 is provided with a thin wall part t on its correction beam body, and has a structure provided in this thin wall part as a strength gauge. There is no change in the position of the load 1 application point, and the output does not change even if there is a change in the position of the load 1 application point.

Then, a positioning guide #1 is engraved on the correction beam body, and the tapered engagement part of the reference weight is fitted into this,
Since the configuration is such that a reference load is applied to the correction beam body,
There is no change in the position of the load application point when the reference load 1 is applied, and the reference load can always be applied at a constant position. Furthermore, the electromagnetic suction device, which is excited when applying the standard load to the correction load cell, is supported by the device pace rather than the correction load cell, so that the heat generated by the electromagnetic suction device does not reach the correction load cell. With,
The nine lead wires connected to this electromagnetic suction device do not exert any stress on the correction beam body.

That is, for the above reasons, the present invention can always take out the reference load as an accurate output, and therefore can provide a high-quality weighing device that can perform more accurate gravity correction.

[Brief explanation of drawings]

Fig. 1 is a front view showing the weight detection part of the weighing device, Figs. 2 to 4 show an embodiment of the present invention, and Figs.
The figures are a front view taken along the t-s section of the electric charge detection section in different states, and a wfr sectional view taken along the line ■-■ in Fig. 2 of the 41st drawing. 21...Device pace, 22...L-proof inspection mechanism, 2
J...beam body, 30...1 detection am for force correction. 31... Correction load cell, 32... Reference valve body mounting stand, 13... Electromagnetic suction device, 34... Reference weight, 3
5... Spring, 36... Correction beam body, 31...
Positioning hole, 38...hole, 3g...thin part, 4
0...Strength, 43...Interlocking part.

Claims (1)

[Claims] (1) In one device that can perform weighing operation when the power is turned on, one quantity detection S is connected to one force correction detection mechanism that adds #j to the reference load, and to the object to be weighed '#m'. The above-mentioned MR output mechanism for one-force correction is cantilever-supported to the device pace that fixed the beam body of the detection image structure for acupuncture or the detection mechanism for measurement, and the detection mechanism for measurement is Tip of beam body mm
When the positioning guide St is carved upward, a thin wall portion is provided on the proximal end side of the guide groove of the correction beam body, and this thin WK strain r-Z is provided. , a 9-standard stage jI14 arranged vertically below this load cell, an electromagnetic suction device that is attached to the device pace and moves the standard stage stage downward, and the above-mentioned positioning guide. Groove K1
A reference weight having a tapered engagement portion at the tip thereof and placed on the reference weight holder, and a reference weight placed between the reference weight holder and the device pace or the electromagnetic suction device, A measuring device characterized in that it is provided with a spring that always urges the reference weight upward and holds the hook S in a state where it is removed from the positioning guide groove. (2) The above reference weight can be made of non-magnetic material.
The needle amount device according to claim (1) above, which is a # image.