CN102323102A - Control method for tensioning force of hydraulic jack - Google Patents
Control method for tensioning force of hydraulic jack Download PDFInfo
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- CN102323102A CN102323102A CN201110173711A CN201110173711A CN102323102A CN 102323102 A CN102323102 A CN 102323102A CN 201110173711 A CN201110173711 A CN 201110173711A CN 201110173711 A CN201110173711 A CN 201110173711A CN 102323102 A CN102323102 A CN 102323102A
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Abstract
The invention discloses a control method for a tensioning force of a hydraulic jack. The control method at least comprises the following steps of: carrying out calibration of oil pressure-output force and oil pressure-oil express value on tensioning equipment; setting and storing a minimum value and a maximum value of an output force generated by tensioning the jack once in the tensioning equipment as well as actually-tensioned accumulated times and the allowed tensioning maximum times of the jack; reading the minimum value and the maximum value of the output force generated by tensioning the jack once in the system, the actually-tensioned accumulated times and the allowed tensioning maximum times of the jack as well as relevant data of the oil pressure-output force and oil pressure-oil express value by the tensioning equipment system; and carrying out point-to-point control and tensioning on the output force, and displaying the magnitude and the speed of the output force, the indicating value of a peak value, the actually-tensioned accumulated times of the jack as well as the magnitude, the speed and the peak value of a stressed member, wherein the jacks can be interchanged and measuring oil gauges can be also interchanged.
Description
Technical field
The present invention relates to the control method of a kind of hydraulic jack stretching force in the Electromechanical Control field.
Background technology
Hydraulic jack is by manpower or driven by power hydraulic pump, through the hydraulic system transmission, lifts part with cylinder body or piston as the top.The hydraulic jack compact conformation, ability is the jacking weight steadily, and lifting capacity is big, and stroke is big, and transmission efficiency is higher, so use wider.For guaranteeing the accuracy of hydraulic jack stretching force, generally adopt regularly to the tensioning equipment system: lifting jack, oil pump, oil meter, oil pipe carry out the demarcation of " oil pressure---power output " at present.Staking-out work generally is on pressing machine, to carry out, and is as the criterion with the active duty of lifting jack, and the mean value of measuring for three times got in the classification record, processes chart or run a curve the foundation during as stretch-draw.Its weak point has: one, because " oil pressure---power output " adopt is the mean value of getting No. three survey records, processes chart or runs a curve, and the foundation during as stretch-draw, so the accuracy of hydraulic jack stretching force is lower; Two, owing to be to the tensioning equipment system: lifting jack, oil pump, oil meter, oil pipe are demarcated, and " oil pressure---power output " is corresponding one by one with lifting jack, oil meter, and lifting jack, oil meter all can not exchange; Three, existing tensioning equipment system: lifting jack, oil pump, oil meter, oil pipe do not have the demonstration of power output speed and peak value and jack tension number of times.
Summary of the invention
To above-mentioned prior art; The object of the invention aims to provide a kind of hydraulic jack stretching force control method; Can realize lifting jack respectively, measure the oil meter exchange; Also can show, write down and store size, speed, peak value and the jack tension number of times of power output, when the tensioning equipment system: lifting jack, oil pump, measurement oil meter, when oil pipe sets the sectional area of primary structure member, power output also can be represented stress intensity, speed and the peak value of primary structure member; Improve the accuracy and the reliability of control hydraulic jack stretching force, thereby improve the accuracy and the efficient of total system.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of control method of hydraulic jack stretching force may further comprise the steps at least:
1). to by lifting jack, oil pump, standard oil meter, measure the tensioning equipment system that oil meter and oil pipe form and carry out " oil pressure---power output " and " oil pressure---oil meter indicating value " demarcation, and store " oil pressure---power output " and " oil pressure---oil meter indicating value " two nominal datas of tensioning equipment system;
2) minimum value and the maximal value of a setting and a power output of storage jack tension; Be provided with and the accumulative frequency of the actual stretch-draw of storage lifting jack and the permission stretch-draw maximum times of lifting jack;
3). read step 1) described in " oil pressure---power output ", " oil pressure---oil meter indicating value " and step 2) described in the actual stretch-draw accumulative frequency of minimum value, maximal value, lifting jack of a power output of jack tension; Stretch-draw is carried out in power output realization pointwise control to the lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe, adopts differential technique calculating to replenish to the power output value between 2 o'clock, and demonstration, record also can be stored size, speed and the peak value of power output; When the actual power output of lifting jack satisfies less than step 2 in one period continuous time simultaneously) described in jack tension power output minimum value, greater than step 2) described in jack tension power output maximal value; Then this section period is called a stretch-draw cycle of lifting jack; Be stretch-draw once; The actual stretch-draw number of times of lifting jack adds up 1 time and storage automatically, also can manually add and store the accumulative frequency of the actual stretch-draw of lifting jack;
4). read step 2) described in permission stretch-draw maximum times and the actual stretch-draw accumulative frequency of the jack tension described in the step 3) of jack tension; When the actual stretch-draw accumulative frequency of the jack tension described in the step 3) is equal to or greater than step 2) described in the permission stretch-draw maximum times of jack tension the time, the jack tension system can point out and should in time demarcate this lifting jack.
Said hydraulic pressure is to be higher than the measurement oil meter accuracy of lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe and the standard oil that can trace to the source is represented value; The oil meter indicating value is to measure the indicating value of oil meter; Power output comprises size, speed and the peak value of power output, and measuring oil meter described in the step 1) can be more than two or two.
Description of drawings
Fig. 1 is oil pump in the tensioning equipment system, standard oil meter and the block diagram that is connected of measuring oil meter and lifting jack;
Fig. 2 is oil pump in the tensioning equipment system, the connection block diagram of measuring oil meter, lifting jack;
Fig. 3 is the connection block diagram of oil pump in the tensioning equipment system, standard oil meter, lifting jack;
Fig. 4 is oil pump in the tensioning equipment system, standard oil meter and the block diagram that is connected of measuring oil meter.
In the drawings:
The 1-oil pump, 2-standard oil meter,
3-measures oil meter, 4-lifting jack.
Embodiment
Embodiment one:
1). disposable obtaining " oil pressure---power output ", " oil pressure---the oil meter indicating value " two association:
As shown in Figure 1; To the tensioning equipment system: lifting jack, oil pump, standard oil meter, measure that oil meter, oil pipe carry out " oil pressure---power output ", " oil pressure---oil meter indicating value " demarcated, and " oil pressure---power output " of storage tensioning equipment system, " oil pressure---oil meter indicating value " two nominal datas; Staking-out work is on pressing machine, to carry out, and is as the criterion with the active duty of lifting jack, and the pointwise record is storage oil pressure, oil meter indicating value and power output also, gets the mean value of measuring for three times, processes the chart that can store, read automatically or runs a curve.
2). be provided with and store the minimum value and the maximal value of a power output of jack tension, the permission stretch-draw maximum times that can be provided with and store add up the stretch-draw number of times and the lifting jack of the actual stretch-draw of lifting jack.
3). as shown in Figure 2; Read step 1) " oil pressure---power output " described in, " oil pressure---oil meter indicating value " and step 2) described in minimum value, the maximal value of a power output of jack tension also have the actual stretch-draw accumulative frequency of lifting jack; Stretch-draw is carried out in power output realization pointwise control to the lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe; Power output value between 2 o'clock adopts differential technique calculating to replenish, and demonstration, record also can be stored size, speed and the peak value of power output; When the actual power output of lifting jack satisfies less than step 2 in one period continuous time simultaneously) described in jack tension power output minimum value, greater than step 2) described in jack tension power output maximal value; Then this section period is called a stretch-draw cycle of lifting jack; Be stretch-draw once; The actual stretch-draw number of times of lifting jack adds up 1 time and storage automatically, also can manually add and store the actual stretch-draw accumulative frequency of lifting jack;
4). read step 2) described in permission stretch-draw maximum times and the actual stretch-draw accumulative frequency of the jack tension described in the step 3) of jack tension; When the actual stretch-draw accumulative frequency of the jack tension described in the step 3) is equal to or greater than step 2) described in the maximum stretch-draw number of times of jack tension the time, the jack tension system can point out and should in time demarcate this lifting jack.
Embodiment two:
1). successively obtain at twice " oil pressure---power output ", " oil pressure---the oil meter indicating value " two association; Also can lack an association and just mend an association:
As shown in Figure 3, to the tensioning equipment system: lifting jack, oil pump, standard oil meter, oil pipe carry out " oil pressure---power output " to be demarcated, and " oil pressure---power output " nominal data of storage tensioning equipment system; As shown in Figure 4, to the tensioning equipment system: oil pump, standard oil meter, measure oil meter, oil pipe and carry out " oil pressure---oil meter indicating value " and demarcate, and storage oil pump, standard oil meter, measure " oil pressure---oil meter indicating value " nominal data of oil meter, oil pipe; The staking-out work of lifting jack is on pressing machine, to carry out, and is as the criterion with the active duty of lifting jack, and the pointwise record is storage oil pressure, power output also, gets the mean value of measuring for three times, processes the chart that can store, read automatically or runs a curve; The staking-out work of measuring oil meter can be at oil pump, standard oil meter, measure in oil meter, the tubing system and carry out, and the pointwise record is storage oil pressure, oil meter indicating value also, gets the mean value of measuring for three times, processes the chart that can store, read automatically or runs a curve.。
2). be provided with and store the minimum value and the maximal value of a power output of jack tension, can be provided with and store the accumulative frequency of the actual stretch-draw of lifting jack, can be provided with and store the permission stretch-draw maximum times of lifting jack.
3). as shown in Figure 2; Read step 1) " oil pressure---power output " described in, " oil pressure---oil meter indicating value " and step 2) described in jack tension power output minimum value, a maximal value also have the actual stretch-draw accumulative frequency of lifting jack; Stretch-draw is carried out in power output realization pointwise control to the lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe; Power output value between 2 o'clock adopts differential technique calculating to replenish, and demonstration, record also can be stored size, speed and the peak value of power output; When the actual power output of lifting jack satisfies less than step 2 in one period continuous time simultaneously) described in jack tension power output minimum value, greater than step 2) described in jack tension power output maximal value; Then this section period is called a stretch-draw cycle of lifting jack; Be stretch-draw once; The jack tension number of times adds up 1 time and storage automatically, also can manually add and store the accumulative frequency of the actual stretch-draw of lifting jack;
4). read step 2) described in maximum stretch-draw number of times and the actual stretch-draw accumulative frequency of the jack tension described in the step 3) of jack tension; When the actual stretch-draw accumulative frequency of the jack tension described in the step 3) equals step 2) described in the maximum stretch-draw number of times of jack tension the time, the jack tension system can point out and should in time demarcate this lifting jack.
Oil pressure of the present invention is to be higher than the tensioning equipment system: the indicating value of the standard oil meter that the accuracy of measurement oil meter also can be traced to the source in lifting jack, oil pump, measurement oil meter, the oil pipe, and the oil meter indicating value is to measure the indicating value of oil meter; Power output comprises size, speed and the peak value of power output, when the tensioning equipment system: lifting jack, oil pump, measurement oil meter, when oil pipe sets the sectional area of primary structure member, power output also can be represented stress intensity, speed and the peak value of primary structure member; Measuring oil meter described in the step 1) can be more than two or two, and the described oil pressure of prior art is an indicating value of measuring oil meter, and power output only has the size of power output.
The control method of hydraulic jack stretching force according to the invention can provide a kind of pointwise record of hydraulic jack stretching force, the control method of storing and reading; Hydraulic jack, to measure oil meter interchangeable; Show, write down also and can store size, speed and peak value and the jack tension number of times of power output, also can show stress intensity, speed and the peak value of primary structure member; Improve the accuracy and the reliability of control hydraulic jack stretching force, thereby improve the accuracy and the efficient of total system, can also substitute part drawing appearance.
Claims (1)
1. the control method of a hydraulic jack stretching force is characterized in that, may further comprise the steps at least:
1). to by lifting jack, oil pump, standard oil meter, measure the tensioning equipment system that oil meter and oil pipe form and carry out " oil pressure---power output " and " oil pressure---oil meter indicating value " demarcation, store " oil pressure---power output " and " oil pressure---oil meter indicating value " two nominal datas of tensioning equipment system;
2). be provided with and store the minimum value and the maximal value of a power output of jack tension; Be provided with and the accumulative frequency of the actual stretch-draw of storage lifting jack and the permission stretch-draw maximum times of lifting jack;
3). read step 1) described in " oil pressure---power output ", " oil pressure---oil meter indicating value " and the step 2 of lifting jack, oil pump, measurement oil meter, oil pipe) described in power output minimum value of jack tension, maximal value, the actual stretch-draw accumulative frequency of lifting jack; Stretch-draw is carried out in power output realization pointwise control to the lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe; Power output value between 2 o'clock adopts differential technique calculating to replenish, and demonstration, record also can be stored size, speed and the peak value of power output; When the actual power output of lifting jack satisfies less than step 2 in one period continuous time simultaneously) described in jack tension power output minimum value, greater than step 2) described in jack tension power output maximal value; Then this section period is called a stretch-draw cycle of lifting jack; Be stretch-draw once; The jack tension number of times adds up 1 time and storage automatically, also can manually add and store the stretch-draw number of times of jack tension;
4). read step 2) described in maximum stretch-draw number of times and the actual stretch-draw accumulative frequency of the jack tension described in the step 3) of jack tension; When the actual stretch-draw accumulative frequency of the jack tension described in the step 3) equals step 2) described in the maximum stretch-draw number of times of jack tension the time, the jack tension system can point out and should in time demarcate this lifting jack.
Said oil pressure is to be higher than the measurement oil meter accuracy of lifting jack in the tensioning equipment system, oil pump, measurement oil meter, oil pipe and the standard oil that can trace to the source is represented value; The oil meter indicating value is to measure the indicating value of oil meter; Power output comprises size, speed and the peak value of power output, and measuring oil meter described in the step 1) can be more than two or two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110173711 CN102323102B (en) | 2011-06-24 | 2011-06-24 | Control method for tensioning force of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110173711 CN102323102B (en) | 2011-06-24 | 2011-06-24 | Control method for tensioning force of hydraulic jack |
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| Publication Number | Publication Date |
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| CN102323102A true CN102323102A (en) | 2012-01-18 |
| CN102323102B CN102323102B (en) | 2013-02-27 |
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|---|---|---|---|
| CN 201110173711 Expired - Fee Related CN102323102B (en) | 2011-06-24 | 2011-06-24 | Control method for tensioning force of hydraulic jack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234682A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Anchor rod tensometer |
| CN104949849A (en) * | 2015-04-27 | 2015-09-30 | 同济大学 | Jack demarcating and calibrating methods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988865A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Hydraulic jack self-calibrating system and self-calibrating method |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
-
2011
- 2011-06-24 CN CN 201110173711 patent/CN102323102B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988865A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Hydraulic jack self-calibrating system and self-calibrating method |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
Non-Patent Citations (3)
| Title |
|---|
| 郭全全 等: "预应力数字化张拉技术的研究", 《土木工程学保》, vol. 37, no. 7, 31 July 2004 (2004-07-31), pages 13 - 17 * |
| 闾开军，李彬: "预应力混凝土桥梁若干张拉技术问题的探讨", 《中南公路工程》, vol. 28, no. 2, 30 June 2003 (2003-06-30) * |
| 高健: "如何做好千斤顶标定试验", 《山西建筑》, vol. 36, no. 2, 31 January 2010 (2010-01-31), pages 347 - 348 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234682A (en) * | 2013-05-13 | 2013-08-07 | 蔡青林 | Anchor rod tensometer |
| CN103234682B (en) * | 2013-05-13 | 2015-06-17 | 蔡青林 | Anchor rod tensometer |
| CN104949849A (en) * | 2015-04-27 | 2015-09-30 | 同济大学 | Jack demarcating and calibrating methods |
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| Publication number | Publication date |
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| CN102323102B (en) | 2013-02-27 |
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