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Hydraulic weighing unit and ten-thousand-ton grade hydraulic electronic scale

A weighing unit and hydraulic technology, which is applied in the direction of weighing equipment, weighing and measuring devices using fluid balance, can solve the problem of limited weight in weighing, and achieve the effect of convenient control.

Inactive Publication Date: 2012-07-04
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weighing unit is accurate and easy to operate, but its weighing weight is limited, and it is only suitable for weighing objects with relatively small self-weight

Method used

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  • Hydraulic weighing unit and ten-thousand-ton grade hydraulic electronic scale
  • Hydraulic weighing unit and ten-thousand-ton grade hydraulic electronic scale
  • Hydraulic weighing unit and ten-thousand-ton grade hydraulic electronic scale

Examples

Experimental program
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Effect test

Embodiment 1

[0024] like figure 1 and figure 2 As shown, a hydraulic weighing unit 100 includes a hydraulic cylinder 110 , a control oil circuit 120 and an oil pump 130 . The oil pump 130 drives the liquid in the hydraulic system to flow in the control oil circuit 120 and drives the hydraulic cylinder 110 to move. A pressure sensor 117 is also provided on the hydraulic cylinder 110 for detecting the current force on the hydraulic cylinder 110 .

[0025] In order to finely and accurately adjust the force of the hydraulic cylinder 110, the hydraulic weighing unit 100 further includes a frequency converter 131 for controlling the motor of the motor-driven oil pump 130. By controlling the motor, the power of the oil pump 130 can be easily adjusted pressure. The frequency converter 131 can also receive the feedback from the pressure sensor 117, and form a force closed loop with the pressure sensor 117 to precisely adjust the force of the hydraulic cylinder.

[0026] As a preferred embodimen...

Embodiment 2

[0030] like image 3 As shown, a 10,000-ton hydraulic electronic scale includes a displacement module and a force module, the displacement module includes at least three hydraulic weighing units 100 described above, and the hydraulic weighing unit 100 is provided with a displacement sensor 118 and a frequency converter 131; The force receiving module includes at least one hydraulic weighing unit 100 described above.

[0031] The hydraulic weighing unit 100 of the force-bearing module further includes a frequency converter 131. In order to finely and accurately adjust the force of the hydraulic cylinder 110, the hydraulic weighing unit 100 further includes a frequency converter 131 for controlling the motor-driven oil pump 130. By controlling the motor, the pressure of the oil pump 130 can be easily adjusted. The frequency converter 131 can also receive the feedback of the pressure sensor 117, and form a force closed loop with the pressure sensor 117, so as to precisely adjust...

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Abstract

The invention discloses a hydraulic weighing unit and a ten-thousand-ton grade hydraulic electronic scale. The hydraulic weighing unit comprises a hydraulic cylinder, a control oil circuit, an oil pump and a pressure sensor; the oil pump controls the hydraulic cylinder through the control oil circuit; and the pressure sensor is arranged on the hydraulic cylinder, and is used for measuring the stress of the hydraulic cylinder. The hydraulic electronic scale comprises a displacement module and a stressed module, wherein the displacement module comprises at least three hydraulic weighing units, and each hydraulic weighing unit also is provided with a displacement sensor and a frequency converter; the frequency converter controls the oil pump of each hydraulic weighing units, and forms a position closed loop together with the displacement sensor; and the stressed module comprises at least one hydraulic weighing unit. Compared with the prior art, the electronic scale provided by the invention can conveniently weigh the weight of the ten-thousand-ton grade object, and can automatically collect and calculate the weight and gravity center data of the object.

Description

technical field [0001] The invention relates to a hydraulic weighing unit and a hydraulic electronic scale, in particular to a 10,000-ton scale electronic scale and a weighing unit applied in the electronic scale. Background technique [0002] In people's production and life, it is often necessary to weigh heavy objects. Such as electronic scales or floor scales, etc., as long as the object is placed on the electronic scale or the car is driven on the floor scale, the object or the car on it can be weighed. When it is necessary to weigh objects with a self-weight of more than 10,000 tons and are difficult to move, it is not only difficult to move these bulky objects, but also difficult to accurately measure these objects. [0003] In order to accurately weigh large-weight objects, a hydraulic system is generally used in electronic scales to support objects to weigh objects. The Chinese patent with the patent application number 91109270.6 discloses a hydraulic weighing acqu...

Claims

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Application Information

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IPC IPC(8): G01G5/06
Inventor 袁斌李年煜邱中平邓旭东韩瑜杨文灯徐文友吴定安
Owner CHINA NAT OFFSHORE OIL CORP
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