CN104949849A - Jack demarcating and calibrating methods - Google Patents
Jack demarcating and calibrating methods Download PDFInfo
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- CN104949849A CN104949849A CN201510206900.6A CN201510206900A CN104949849A CN 104949849 A CN104949849 A CN 104949849A CN 201510206900 A CN201510206900 A CN 201510206900A CN 104949849 A CN104949849 A CN 104949849A
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Abstract
The invention provides jack demarcating and calibrating methods. According to the demarcating method, a target demarcating oil pressure value is set, pressure is acted on a jack till the target demarcating oil pressure value is reached, the tensioning force of the jack displayed by a calibration device is recorded, and relation between the oil pressure and the tensioning force of the jack is obtained via fitting according multiple target demarcating oil pressure values and the corresponding tensioning forces of the jack. According to the calibrating method, a target tensioning force value for calibrating the jack is set, the target tensioning force is converted into a corresponding target calibration oil pressure according to a calibration result, pressure is acted on the jack according to the target calibrating oil pressure, and the target calibrating oil pressure is adjusted if necessary till tensioning force value displayed by the calibration device equals the target force value which is set initially. The demarcating method is automatically used in a system composed by the jack and the calibration device, and the demarcating result is accurate and reliable; and the calibration method is automatically used on the basis of the demarcating method, and the calibration result is accurate and reliable.
Description
Technical field
The invention belongs to lifting jack technical field of measurement and test, relate to a kind of demarcation of lifting jack and the method for calibration.
Background technology
Current, passive scaling method and active scaling method two kinds are generally included to the demarcation of lifting jack.In passive scaling method, before demarcating by oil pump by after very heavy jacking part hydraulic oil, close oily pump ﹑ and tighten lifting jack terminal valve; Exert pressure through correcting device is passive, according to such as 0--20% δ,----100% δ (wherein for 60% δ--80% δ--for 40% δ, δ is the nominal stretch-draw force value of lifting jack, here it is chosen as the maximum demarcation jack tension force value set) be a circulation, record the oil pressure gauge data of corresponding point, circulate for three times and record corresponding oil pressure gauge data, calculating the relation function (y=ax+b of Calibration equation and jack tension power and lifting jack oil pressure finally by Computer; Wherein, y represents jack tension force value, and x represents lifting jack oil pressure, and a, b all represent the parameter in the relation function of jack tension power and lifting jack oil pressure) in parameter value (a, b value).The oil pressure gauge of this method is by artificial reading, and error is larger; And on-the-spot pre-stress construction is lifting jack initiatively exerts pressure, and does not meet with scene.
In active scaling method, operation oil pump, allow jack tension power close to target point value, record the oil pressure gauge data of corresponding point, according to such as 0--20% δ,----60% δ--80% δ--100% δ is a circulation to 40% δ, circulate for three times and record corresponding oil pressure gauge data, calculating the parameter value (a, b value) of Calibration equation (y=ax+b) finally by Computer.The oil pressure gauge of this method is by artificial reading, and error is larger; Although and initiatively exert pressure and to conform to scene, manual operation oil pump accurately can not control the impact point of jack tension power in correspondence, and error is too large.
As can be seen here, in prior art, the scaling method error of lifting jack is comparatively large, and precision is lower and can not automatically carry out.Simultaneously also because so, can not carry out automatically and accurately calibrating to lifting jack according to calibration result in prior art.
Summary of the invention
The object of the present invention is to provide a kind of demarcation of lifting jack and the method for calibration, can automatically and accurately demarcate and calibration lifting jack.
In order to achieve the above object, solution of the present invention is:
A scaling method for lifting jack, comprises the following steps:
(1) target setting demarcates oil pressure value sequence, comprise first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value; Wherein, n is more than or equal to 2;
Carry out partial circulating at every turn, from described target designation oil pressure value sequence, specify the target designation oil pressure value all not identical with each partial circulating before, as the target designation oil pressure value of this partial circulating; Described partial circulating refers to the process from step (1) to step (3);
(2) be described lifting jack pressure regulation, until reach the target designation oil pressure value of this partial circulating;
(3) for measuring the jack tension force value of the calibrated meter display of jack tension power when the target designation oil pressure value recording this partial circulating and the target designation oil pressure value reaching this partial circulating;
(4) determine whether that each target designation oil pressure value of described target designation oil pressure value sequence carries out step (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to described step (1);
(5) according to target designation oil pressure value and the corresponding jack tension force value of each partial circulating record, matching obtains the relation of lifting jack oil pressure and jack tension power, as calibration result.
In described step (1) first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value according to from small to large order arrangement; In each partial circulating, the target designation oil pressure value this time specified by partial circulating is the larger target designation oil pressure value that the target designation oil pressure value of specifying than last partial circulating in described target designation oil pressure value sequence is adjacent.
Described step (4) is: if this time the target designation oil pressure value of partial circulating is less than the n-th target designation oil pressure value of described target designation oil pressure value sequence, then proceed to described step (1); Otherwise, proceed to step (5).
Described scaling method also comprised before described step (1): will be used for measuring the instrument zero of lifting jack oil pressure, will be used for the calibrated meter zero measuring jack tension power; Afterwards, the oil pump driving described lifting jack is started, until position treated by described lifting jack.
For each target designation oil pressure value often organized in described target designation oil pressure value sequence, according to order from small to large, three described partial circulatings are carried out in samsara.
A calibration steps for the lifting jack of above-mentioned scaling method, comprises the following steps:
(1) target setting calibration jack tension force value sequence, comprise first object calibration jack tension force value, the second target alignment jack tension force value ..., m target alignment jack tension force value; Wherein, m is more than or equal to 2;
According to the lifting jack oil pressure of demarcation and the corresponding relation of jack tension power, calculate the oil pressure value that in target alignment jack tension force value sequence, each target alignment jack tension force value is corresponding, obtain target alignment oil pressure value sequence, comprise accordingly first object calibration oil pressure value, the second target alignment oil pressure value ..., m target alignment oil pressure value;
Carry out partial circulating at every turn, from described target alignment oil pressure value sequence, specify the target alignment oil pressure value all not identical with each partial circulating before, as the target alignment oil pressure value of this partial circulating; Wherein, described partial circulating refers to the process from step (1) to step (3);
(2) be described lifting jack pressure regulation, until reach the target alignment oil pressure value of this partial circulating, pressurize carried out to described lifting jack;
(3) judge that whether the jack tension force value of the calibrated meter display for measuring jack tension power is consistent with the target alignment jack tension force value that the initial target of this partial circulating calibrates oil pressure value corresponding; If so, then step (4) is proceeded to; Otherwise, adjust the target alignment oil pressure value of this partial circulating, and proceed to described step (2); Described initial target calibration oil pressure value refers to the target alignment oil pressure value of specifying in described step (1);
(4) determine whether that each target alignment oil pressure value of described target alignment oil pressure value sequence carries out described step (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to described step (1).
Described calibration steps also comprises before described step (4) after described step (3): record the target alignment oil pressure value of this partial circulating and the jack tension force value of calibrated meter display.
First object calibration jack tension force value in described step (1), the second target alignment jack tension force value ..., m target alignment jack tension force value according to from small to large order arrangement; In each partial circulating, the target alignment jack tension force value this time specified by partial circulating is the larger target alignment jack tension force value that the target alignment jack tension force value of specifying than last partial circulating in described target alignment jack tension force value sequence is adjacent.
Described step (4) is: if this time the target alignment jack tension force value of partial circulating is less than the very heavy stretch-draw top value of m target alignment of described target alignment jack tension force value sequence, then proceed to described step (1); Otherwise, proceed to step (5).
Described calibration steps also comprised before described step (1): will be used for measuring the instrument zero of lifting jack oil pressure, will be used for the calibrated meter zero measuring jack tension power; Afterwards, oil pump is started, until position treated by described lifting jack.
Preferably, described calibration steps also comprises after step (5): be described lifting jack pressure release, allows described lifting jack return.
Owing to adopting such scheme, the invention has the beneficial effects as follows: the demarcation of lifting jack of the present invention and the method for calibration automatically can be carried out in the system be made up of lifting jack and correcting device, existing lifting jack scaling method can be overcome can not automatically to carry out and error is larger, the problem that precision is lower, calibration result is accurately reliable; Meanwhile, this calibration steps also can carry out automatically based on this scaling method, makes the lifting jack after calibrating be in more accurate state.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of lifting jack scaling method in the embodiment of the present invention;
Fig. 2 is the process flow diagram of lifting jack calibration steps in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
The present invention proposes a kind of demarcation of lifting jack and the method for calibration, the method automatically can be carried out in the system of lifting jack and correcting device composition thereof, and the more conventional demarcation of precision and calibration steps are greatly improved.
The scaling method of this lifting jack comprises the following steps:
(1) target setting demarcates oil pressure value sequence, this target designation oil pressure value sequence comprise first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value; Wherein, n is more than or equal to 2.Oil pressure described in the present invention all refers to lifting jack oil pressure.
Carry out partial circulating at every turn, from above-mentioned target designation oil pressure value sequence, specify the target designation oil pressure value all not identical with each partial circulating before, as the target designation oil pressure value of this partial circulating; This partial circulating refers to the process from step (1) to step (3).
(2) be lifting jack pressure regulation, namely adjustment is applied to the oil pressure of lifting jack, until reach the target designation oil pressure value of this partial circulating;
(3) for measuring the jack tension force value of the calibrated meter display of jack tension power when the target designation oil pressure value recording this partial circulating and the target designation oil pressure value reaching this partial circulating;
(4) determine whether that each target designation oil pressure value of above-mentioned target designation oil pressure value sequence carried out step (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to step (1);
(5) according to the target designation oil pressure value recorded in each partial circulating and corresponding jack tension force value, matching obtains the relation of lifting jack oil pressure and jack tension power, as calibration result.
In above-mentioned steps (1), first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value according to from small to large order arrangement.Thus in each partial circulating, the target designation oil pressure value this time specified by partial circulating is the larger target designation oil pressure value that the target designation oil pressure value of specifying than last partial circulating in above-mentioned target designation oil pressure value sequence is adjacent.
Therefore, above-mentioned steps (4) can be carried out as follows: if the maximum target that namely the n-th target designation oil pressure value that this time the target designation oil pressure value of partial circulating is less than above-mentioned target designation oil pressure value sequence sets demarcates oil pressure value, then show that each target designation oil pressure value in above-mentioned target designation oil pressure value sequence all carried out step (1), (2) and (3), therefore proceed to step (5) and carry out calculating or matching; Otherwise proceeding to step (1) is that the target designation oil pressure value not carrying out partial circulating carries out partial circulating.
In order to ensure accuracy and the response performance of this calibration process, this scaling method also comprised before above-mentioned steps (1):
To the instrument zero measuring lifting jack oil pressure be used for, will the calibrated meter zero measuring jack tension power be used for; Afterwards, start the oil pump for driving this lifting jack, until position treated by this lifting jack.Lifting jack treats that position and lifting jack stretch out a part and to take blame for others body, and now jack tension force value is zero, does not check calibration console top.
In order to guarantee the accuracy of this scaling method further, for often organizing above-mentioned target designation oil pressure value sequence, above-mentioned scaling method being carried out three times, namely carrying out three systemic circulations.Wherein, a systemic circulation refers to the order according to target designation oil pressure value in target designation oil pressure value sequence, for each target designation oil pressure value all carries out step (1) process to step (3).Therefore, carry out three systemic circulations and mean each target designation oil pressure value for often organizing in target designation oil pressure value sequence, according to order from small to large, three partial circulatings are carried out in samsara.
In the present embodiment, perform the scaling method of this lifting jack according to process flow diagram as shown in Figure 1.In Fig. 1, the data of 6 shown in right side increase from top to bottom successively, form above-mentioned target designation oil pressure value sequence.Thus, the present embodiment n equals 6.Wherein, E represents the maximum target designation oil pressure value of setting.
The invention allows for a kind of calibration steps of the lifting jack based on this scaling method, the calibration steps of this lifting jack comprises the following steps:
(1) target setting calibration jack tension force value sequence, this target alignment jack tension force value sequence comprise first object calibration jack tension force value, the second target alignment jack tension force value ..., m target alignment jack tension force value.Wherein, m is more than or equal to 2.
According to the lifting jack oil pressure of demarcation and the corresponding relation of jack tension power, calculate the lifting jack oil pressure that in above-mentioned target alignment jack tension force value sequence, each target alignment jack tension force value is corresponding, obtain target alignment oil pressure value sequence, this target alignment oil pressure value sequence comprise accordingly first object calibration oil pressure value, the second target alignment oil pressure value ..., m target alignment oil pressure value.
When carrying out partial circulating, from above-mentioned target alignment oil pressure value sequence, specify the target alignment oil pressure value all not identical with each partial circulating before, as the target alignment oil pressure value of this partial circulating at every turn.Wherein, this partial circulating refers to the process from step (1) to step (3).
(2) be lifting jack pressure regulation, namely adjustment is applied to the oil pressure of lifting jack, until reach the target alignment oil pressure value of this partial circulating and carry out pressurize to lifting jack;
(3) judge that whether the jack tension force value of the calibrated meter display for measuring jack tension power is consistent with the target alignment jack tension force value that the initial target of this partial circulating calibrates oil pressure value corresponding; If so, then step (4) is proceeded to; Otherwise, adjust the target alignment oil pressure value of this partial circulating, and proceed to described step (2); This initial target calibration oil pressure value refers to the target alignment oil pressure value of this partial circulating of specifying in step (1), the target alignment oil pressure value of this partial circulating before namely not adjusting;
(4) determine whether that each target alignment oil pressure value of above-mentioned target alignment oil pressure value sequence carried out above-mentioned steps (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to step (1);
(5) by this lifting jack pressure release, its return is allowed.
In order to be kept for reference, this calibration steps also comprises after step (3) and before step (4): record the target alignment oil pressure value of this partial circulating and the jack tension force value of calibrated meter display.
In above-mentioned steps (1), first object calibration jack tension force value, the second target alignment jack tension force value ..., m target alignment jack tension force value according to from small to large order arrangement.Thus in each partial circulating, the target alignment jack tension force value this time specified by partial circulating is the larger target alignment jack tension force value that the target alignment jack tension force value of specifying than last partial circulating in above-mentioned target alignment jack tension force value sequence is adjacent.
Therefore, above-mentioned steps (4) can be carried out as follows: if the target alignment jack tension force value of this time circulation is less than the m target alignment jack tension force value of above-mentioned target alignment jack tension force value sequence, namely maximum target alignment jack tension force value, then proceed to step (1); Otherwise, proceed to step (5).
In order to ensure accuracy and the response performance of this calibration process, this calibration steps also comprised before above-mentioned steps (1): will be used for measuring the instrument zero of lifting jack oil pressure, will be used for the calibrated meter zero measuring jack tension power; Afterwards, oil pump is started, until position treated by lifting jack.Equally, lifting jack treats that position and lifting jack stretch out a part and to take blame for others body, and now lifting jack force value is zero, then applies this jack tension force value of oil pressure and be namely greater than zero, and do not push up calibration console top, force value is zero.
In the present embodiment, perform the calibration steps of this lifting jack according to process flow diagram as shown in Figure 2.In Fig. 2, the numeral shown in right side increases from top to bottom successively, forms above-mentioned target designation oil pressure value sequence.Thus, the present embodiment m equals 5.Wherein, δ is the nominal force value of lifting jack, chooses it here as the maximum target alignment jack tension force value set.
The demarcation of above-mentioned lifting jack and the method for calibration automatically can be carried out in the system be made up of lifting jack and correcting device, the hardware of this equipment needed for said method such as comprises with layout the human-computer interface module, control module, analog module, the execution module that are connected successively, and execution module then connects lifting jack.Thus, human-computer interface module allows user to input above-mentioned target designation oil pressure value sequence or target alignment jack tension force value sequence etc., and sends it to control module.Execution module then comprise for lifting jack apply oil pressure oil pump, connect lifting jack and obtain the sensor of its oil pressure and stretch-draw force value and show the parts such as calibrated meter of each value.Analog module carries out conversion and the transmission of signal between execution module and control module.Therefore, can be demarcated by human-computer interface module input and calibrate target designation oil pressure value sequence used and target alignment lifting jack force value sequence, automatically perform the demarcation of above-mentioned lifting jack and the method for calibration on this basis by control module.
In sum, the demarcation of lifting jack of the present invention and the method for calibration automatically can be carried out in the system be made up of lifting jack and correcting device, can overcome existing lifting jack scaling method can not automatically to carry out and error is comparatively large, the problem that precision is lower, calibration result is accurately reliable; Meanwhile, this calibration steps also can carry out automatically based on this scaling method, makes the lifting jack after calibrating be in more accurate state.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a scaling method for lifting jack, is characterized in that: comprise the following steps:
(1) target setting demarcates oil pressure value sequence, comprise first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value; Wherein, n is more than or equal to 2;
Carry out partial circulating at every turn, from described target designation oil pressure value sequence, specify the target designation oil pressure value all not identical with each partial circulating before, as the target designation oil pressure value of this partial circulating; Described partial circulating refers to the process from step (1) to step (3);
(2) be described lifting jack pressure regulation, until reach the target designation oil pressure value of this partial circulating;
(3) for measuring the jack tension force value of the calibrated meter display of jack tension power when the target designation oil pressure value recording this partial circulating and the target designation oil pressure value reaching this partial circulating;
(4) determine whether that each target designation oil pressure value of described target designation oil pressure value sequence carries out step (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to described step (1);
(5) according to target designation oil pressure value and the corresponding jack tension force value of each partial circulating record, matching obtains the relation of lifting jack oil pressure and jack tension power, as calibration result.
2. the scaling method of lifting jack according to claim 1, its feature is: in described step (1) first object demarcate oil pressure value, the second target designation oil pressure value ..., the n-th target designation oil pressure value according to from small to large order arrangement; In each partial circulating, the target designation oil pressure value this time specified by partial circulating is the larger target designation oil pressure value that the target designation oil pressure value of specifying than last partial circulating in described target designation oil pressure value sequence is adjacent.
3. the scaling method of lifting jack according to claim 2, is characterized in that: described step (4) is:
If this time the target designation oil pressure value of partial circulating is less than the n-th target designation oil pressure value of described target designation oil pressure value sequence, then proceed to described step (1); Otherwise, proceed to step (5).
4. the scaling method of lifting jack according to claim 1, its feature is: described scaling method also comprised before described step (1):
To the instrument zero measuring lifting jack oil pressure be used for, will the calibrated meter zero measuring jack tension power be used for; Afterwards, the oil pump driving described lifting jack is started, until position treated by described lifting jack.
5. the scaling method of lifting jack according to claim 1, its feature is: for each target designation oil pressure value often organized in described target designation oil pressure value sequence, according to order from small to large, three described partial circulatings are carried out in samsara.
6. based on a calibration steps for the lifting jack of scaling method according to claim 1, it is characterized in that: comprise the following steps:
(1) target setting calibration jack tension force value sequence, comprise first object calibration jack tension force value, the second target alignment jack tension force value ..., m target alignment jack tension force value; Wherein, m is more than or equal to 2;
According to the lifting jack oil pressure of demarcation and the corresponding relation of jack tension power, calculate the oil pressure value that in target alignment jack tension force value sequence, each target alignment jack tension force value is corresponding, obtain target alignment oil pressure value sequence, comprise accordingly first object calibration oil pressure value, the second target alignment oil pressure value ..., m target alignment oil pressure value;
Carry out partial circulating at every turn, from described target alignment oil pressure value sequence, specify the target alignment oil pressure value all not identical with each partial circulating before, as the target alignment oil pressure value of this partial circulating; Wherein, described partial circulating refers to the process from step (1) to step (3);
(2) be described lifting jack pressure regulation, until reach the target alignment oil pressure value of this partial circulating, pressurize carried out to described lifting jack;
(3) judge that whether the jack tension force value of the calibrated meter display for measuring jack tension power is consistent with the target alignment jack tension force value that the initial target of this partial circulating calibrates oil pressure value corresponding; If so, then step (4) is proceeded to; Otherwise, adjust the target alignment oil pressure value of this partial circulating, and proceed to described step (2); Described initial target calibration oil pressure value refers to the target alignment oil pressure value of specifying in described step (1);
(4) determine whether that each target alignment oil pressure value of described target alignment oil pressure value sequence carries out described step (1), (2), (3); If so, then step (5) is proceeded to; Otherwise, proceed to described step (1).
7. the calibration steps of lifting jack according to claim 6, is characterized in that: described calibration steps also comprises before described step (4) after described step (3): record the target alignment oil pressure value of this partial circulating and the jack tension force value of calibrated meter display.
8. the calibration steps of lifting jack according to claim 6, is characterized in that: first object calibration jack tension force value in described step (1), the second target alignment jack tension force value ..., m target alignment jack tension force value according to from small to large order arrangement; In each partial circulating, the target alignment jack tension force value this time specified by partial circulating is the larger target alignment jack tension force value that the target alignment jack tension force value of specifying than last partial circulating in described target alignment jack tension force value sequence is adjacent.
9. the calibration steps of lifting jack according to claim 8, is characterized in that: described step (4) is:
If this time the target alignment jack tension force value of partial circulating is less than the very heavy stretch-draw top value of m target alignment of described target alignment jack tension force value sequence, then proceed to described step (1); Otherwise, proceed to step (5).
10. the calibration steps of lifting jack according to claim 6, it is characterized in that: described calibration steps also comprised before described step (1): will be used for measuring the instrument zero of lifting jack oil pressure, will the calibrated meter zero measuring jack tension power be used for; Afterwards, oil pump is started, until position treated by described lifting jack;
Preferably, described calibration steps also comprises after step (5): be described lifting jack pressure release, allows described lifting jack return.
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| CN108762181A (en) * | 2018-04-11 | 2018-11-06 | 航天科技控股集团股份有限公司 | Automobile meter pointer adjusting process |
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Application publication date: 20150930 |