CN104677478A - Simple weighing sensor detecting device - Google Patents

Abstract

The invention discloses a simple weighing sensor detecting device. The device consists of a weight hanging frame, a stool frame, a weighing sensor, a weight supporting hook and a standard weight, wherein the upper part of the stool frame is an upper panel; the weighing sensor is fixed to the upper panel; the pressing head of the weight hanging frame is in contact with the pressing head of the weighing sensor; the contact surface of the weight hanging frame is a spherical surface; a hanging component is arranged on the weight hanging frame; the standard weight is connected to the weight supporting hook; the contact place where the hanging component of the weight supporting hook and the weight supporting hook are contacted is shaped like a blade edge or an arc surface; the weighing sensor comprises a power supply; the output of the weighing sensor is connected with a millivoltmeter. The device is simple and small in occupation space, can be manufactured by a user, is good in measurement accuracy, can measure at a single point as well as multiple points, and is full in function, and flexible, simple and convenient in operation.

Description

Simple and easy LOAD CELLS pick-up unit

Technical field

The present invention relates to a kind of pick-up unit, especially based on the pick-up unit of LOAD CELLS.

Background technology

LOAD CELLS is sensing element gravity load being converted to electricity by mechanical quantity.Therefore, it is the basic link of electronic scales metering system.Direct decision and affect the stability of measuring accuracy and work.For the manufacturing firm of electronic scales, often need to match selected by detection check linear, repeated, hysteresis error, the output sensitivity of weight sensor, zero point imbalance export and the performance parameter such as drift.To the new LOAD CELLS adopted, usually need continuous band load to test for a long time, thus observe its work stability and reliability of evaluation.For the use producer of electronic scales, because the working environment of LOAD CELLS is relatively severe, damage, change also more frequent.In order to the LOAD CELLS that looking up the fault is new with apolegamy, also need to detect its performance.And the general inconvenience of this detection is delivered to LOAD CELLS factory and is carried out.So, provide applicable simple and practical pick-up unit necessary.

Summary of the invention

The technical matters that the application will solve is to provide a kind of simple and practical pick-up unit.

For solving the problems of the technologies described above, the technical scheme of employing is:

Simple and easy LOAD CELLS pick-up unit, be made up of weight-hoist support, stool frame, LOAD CELLS, counterweight hook and standard test weight, stool frame top is top panel, LOAD CELLS is fixed in the above on plate, the pressure head of weight-hoist support contacts with the pressure head of LOAD CELLS, its surface of contact is sphere, weight-hoist support arranges suspension member, standard test weight connects counterweight hook, the suspension member of weight-hoist support and the contact position of counterweight hook are blade-like or arc surface, LOAD CELLS comprises power supply, and the output of LOAD CELLS is connected with milivoltmeter.

The corrosion resistant plate that weight-hoist support is 2.5mm by thickness makes.Top panel thickness is not less than 15mm.

The invention has the beneficial effects as follows: device is simple, takes up space little, can self manufacture.Owing to taking standard test weight as load, adopt and directly load metering system, and have automatic aligning effect.So measurement accuracy is good.Both can spot measurement, also can multimetering; Loading data can be detected, also can detect unloading data, and can carry out there is a year simulation test for a long time.Multiple functional, flexible operation, simple and convenient.The small-range LOAD CELLS that is best suited for this device detects and demarcates, and particularly measures the upper limit even more ideal at the sensor of 200kg.

Accompanying drawing explanation

Fig. 1 is the structural representation of pick-up unit;

Fig. 2 is the structural representation of weight-hoist support.

Wherein, 1-stool frame, 2-weight-hoist support, 3-LOAD CELLS, 4-standard test weight, 5-counterweight hook.

Embodiment

Pick-up unit is made up of weight-hoist support 2, stool frame 1, LOAD CELLS 3, counterweight hook 5 and standard test weight 4.Weight-hoist support generally adopt thickness be about 2.5mm corrosion resistant plate make.But measure the size of load depending on it, thickness of slab can correspondingly adjust, and also can adopt general steel plate material, but preferably carries out antirust treatment, for ensureing that rigidity reduces link code weight simultaneously, some apertures can be beaten on weight-hoist support.The surface of contact of weight-hoist support pressure head and LOAD CELLS pressure head must make sphere, to play automatic aligning and to become point cantact state with sensor pressure head.The contact position of weight-hoist support and counterweight hook, must make blade-like or arc surface, to ensure that line of force is perpendicular through center line, does not affect by frictional resistance.If weight-hoist support and the weight of counterweight hook can be gathered into an integer better, because the influence amount of caliberating device deadweight so just has quantitatively.The structure of stool frame should note steadiness, and the top panel bearing LOAD CELLS must be smooth, and thickness is not less than 15mm, to ensure that loading end has enough rigidity.Counterweight hook generally makes the suspension hook of supporting plate, but the mode that also can hang up according to counterweight does corresponding structural design.The general application standard counterweight of the counterweight adopted, thus ensure measuring accuracy.

This pick-up unit uses as follows: 1. stool frame is placed on firm nonelastic basis, and the plane that LOAD CELLS placed by stool frame answers basic horizontal.2. utilize backing plate that LOAD CELLS is fixed on stool frame.3. put weight-hoist support, and make the pressure head malleation of weight-hoist support on the pressure head of sensor.4. counterweight hook is suspended on weight-hoist support.5. connect the bridge power supply of LOAD CELLS, export and connect with high-precision milivoltmeter (precision should higher than 70% of sensor nominal accuracy).6. according to the range size of sensor and counting of needs mensuration, multistage loadings counterweight and unloading on counterweight hook, record sensor output data.Thus can the performance index such as the offset output of detecting sensor, linear precision, repeatability precision and return difference, nature can judge that whether sensor is normal and good and bad.

Claims (3)

1. simple and easy LOAD CELLS pick-up unit, it is characterized in that: be made up of weight-hoist support, stool frame, LOAD CELLS, counterweight hook and standard test weight, stool frame top is top panel, LOAD CELLS is fixed in the above on plate, the pressure head of weight-hoist support contacts with the pressure head of LOAD CELLS, its surface of contact is sphere, weight-hoist support arranges suspension member, standard test weight connects counterweight hook, the suspension member of weight-hoist support and the contact position of counterweight hook are blade-like or arc surface, LOAD CELLS comprises power supply, and the output of LOAD CELLS is connected with milivoltmeter.

2. simple and easy LOAD CELLS pick-up unit according to claim 1, is characterized in that: the corrosion resistant plate that weight-hoist support is 2.5mm by thickness makes.

3. simple and easy LOAD CELLS pick-up unit according to claim 1 and 2, is characterized in that: top panel thickness is not less than 15mm.