CN104612123B - For the automatic check device of foundation coefficient tester - Google Patents
For the automatic check device of foundation coefficient tester Download PDFInfo
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- CN104612123B CN104612123B CN201510073780.7A CN201510073780A CN104612123B CN 104612123 B CN104612123 B CN 104612123B CN 201510073780 A CN201510073780 A CN 201510073780A CN 104612123 B CN104612123 B CN 104612123B
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Abstract
The open automatic check device for foundation coefficient tester of the present invention.Automatic check device comprises: counterforce device, for connecting lifting jack; Power or pressure transducer, for being arranged on above or below lifting jack; Electronic test equipment, is connected with power or pressure transducer, for pick-up transducers end every grade of loaded value, gathers or setting oil pressure gauge every grade loaded value, setting loading plate area, and the correlationship formula of output oil pressure representative value and loading plate normal loading intensity.According to the present invention, utilize electronic test equipment can pick-up transducers end every grade of loaded value, gather or setting oil pressure gauge every grade loaded value, the correlationship formula of output oil pressure representative value and loading plate normal loading intensity, thus complete and verify or calibration.Like this, without the need to the data in manual record checking procedure, automatic output verification or calibration result, verify time saving and energy saving and speed fast, and check results is accurately objective.
Description
Technical Field
The invention relates to an automatic calibration device for a foundation coefficient tester and an automatic calibration method for the foundation coefficient tester.
Background
The foundation coefficient is a mechanical index for evaluating the compaction quality of the railway roadbed, the test is to adopt a foundation coefficient tester to measure the ratio of the load strength corresponding to the sinking reference value of a soil body under the action of a load, and the sinking reference value is 1.25mm according to the railway engineering geotechnical test regulations. In order to ensure the compaction quality of the roadbed and meet the requirements of roadbed engineering on safety and durability, the design, construction and acceptance standards of the railway roadbed in China have specific requirements on the foundation coefficients of different parts of the roadbed, for example, the foundation coefficient of the surface layer of the roadbed of the high-speed railway roadbed is not less than 10 MPa/m. At present, the foundation coefficient is detected domestically, a dial indicator is mainly used for measuring the sinking amount of a bearing plate under the action of load, and a pressure gauge is used for measuring the pressure applied by a manual oil pump in a loading device. In order to eliminate the measurement error caused by the system change of the instrument and ensure the accuracy and objectivity of the test data, the geotechnical test regulations of railway engineering stipulate that the instrument needs to be checked once every time the instrument is put into a new working point or every year. And (3) through verification, measuring the correlation between the standard load strength of the bearing plate and the reading of the pressure gauge of the foundation coefficient tester, establishing a regression equation, and arranging and drawing the regression equation into a chart to be used as a calculation basis of the foundation coefficient test. At present, the foundation coefficient tester comprises the following checking steps: a jack of the foundation coefficient tester is placed on a pressure support or a press machine, and a standard dynamometer is placed on the jack (when the press machine is used for checking, if the precision and the measuring range of the dynamometer of the press machine meet the checking requirements, the standard dynamometer is not used); and loading the jack step by step through a hydraulic pump of the foundation coefficient tester, and simultaneously recording the representation values of the dynamometer and the oil pressure until the load reaches the maximum test load of the foundation coefficient test. This was repeated three times. According to the recorded data, calibrating the relation between the pressure meter reading of the foundation coefficient tester and the standard load strength to obtain the relation between the pressure meter reading and the standard load strength:
P＝aσ0+b
in the formula: p-pressure gauge reading (MPa);
σ0-standard load strength (MPa);
a-first order coefficient;
b-constant term (MPa).
The existing foundation coefficient tester is time-consuming and labor-consuming in verification, and is easy to have errors, even calculation result errors. Under the condition, the requirement for developing a novel automatic calibration device of the foundation coefficient tester is provided, the calibration speed is high, the calibration process does not need to be recorded manually, the calibration or calibration result is automatically calculated and displayed, and the calibration result is accurate and objective.
Disclosure of Invention
The embodiment of the invention aims to overcome the defects and provides an automatic calibration device and method for a foundation coefficient tester, which have high detection speed and accurate result.
In order to solve the above problems, according to a first aspect of the present invention, there is provided an automatic calibration apparatus for a ground coefficient tester, the ground coefficient tester including a jack, a bearing plate, a hydraulic pump, and an oil pressure gauge, the automatic calibration apparatus including: the counterforce device is used for connecting the jack and providing counterforce to the jack when the hydraulic pump loads the jack at each stage; the force or pressure sensor is arranged above or below the jack and used for sensing each level of loading value at the sensor end when the hydraulic pump loads each level of the jack; and the electronic testing device is connected with the force or pressure sensor and is used for acquiring the loading value of each stage of the sensor end, acquiring or setting the loading value of each stage of the oil pressure meter, setting the area of the bearing plate and outputting a correlation formula of the oil pressure indicating value and the standard load strength of the bearing plate, wherein the loading value of each stage of the oil pressure meter is the oil pressure strength applied when the hydraulic pump displayed by the oil pressure meter loads the jack at each stage.
According to a second aspect of the invention, an automatic calibration device for a foundation coefficient tester is provided, wherein the automatic calibration device further comprises an oil pressure sensor and a conversion tee joint, wherein a first end of the conversion tee joint is connected with an oil pressure gauge, a second end of the conversion tee joint is connected with the oil pressure sensor, and a third end of the conversion tee joint is connected with a hydraulic pump; the electronic testing device is also connected with the oil pressure sensor to collect the sensing value of the oil pressure sensor, and the sensing value of the oil pressure sensor represents the loading value of each stage of the oil pressure gauge.
According to a third aspect of the present invention, there is provided an automatic checking apparatus for a ground coefficient tester, wherein the electronic testing apparatus comprises an oil pressure gauge value setter for inputting a loading value of the oil pressure gauge per stage at the time of loading per stage.
According to a fourth aspect of the present invention, there is provided an automatic calibration apparatus for a ground coefficient tester, wherein the electronic test apparatus comprises an oil pressure gauge value presetter for presetting a loading value of each stage of the oil pressure gauge.
According to a fifth aspect of the present invention, there is provided an automatic calibration apparatus for a ground coefficient tester, wherein the electronic test apparatus includes a loading board area inputter or selector for setting an area of the loading board.
According to a sixth aspect of the present invention, an automatic calibration device for a ground coefficient tester is provided, wherein the electronic testing device comprises a first processor and a second processor, the first processor determines a correlation equation between an oil pressure value and a sensing value of a force or pressure sensor according to a loading value of each level of a sensor end and a loading value of each level of an oil pressure gauge, and the second processor determines a correlation equation between an oil pressure value and a standard load strength of a bearing plate according to a correlation equation between an oil pressure value and a sensing value of a force or pressure sensor and an area of the bearing plate.
According to a seventh aspect of the present invention, there is provided an automatic verification apparatus for a ground coefficient tester, wherein the electronic test apparatus further outputs at least one of the following information: the calibration curve comprises loading values of each stage of the sensor end, loading values of each stage of the oil pressure gauge, the area of the bearing plate, a correlation formula of an oil pressure value and a force or pressure sensor sensing value, a calibration curve of the oil pressure value and the force or pressure sensor sensing value, and a calibration curve of the oil pressure value and the standard load strength of the bearing plate.
According to an eighth aspect of the present invention, there is provided an automatic calibration device for a ground coefficient tester, wherein the electronic testing device comprises a display and/or a communicator communicating with a terminal device.
According to a ninth aspect of the present invention, there is provided an automatic calibration device for a foundation coefficient tester, wherein the counterforce device is a counterforce frame or a press.
According to the automatic calibration device and method for the foundation coefficient tester, the electronic test device can be used for collecting the loading value of each stage of the sensor end, collecting or setting the loading value of each stage of the oil pressure gauge, and outputting the correlation relation between the oil pressure representation value and the standard load strength of the bearing plate, so that calibration or calibration is completed. Therefore, data in the checking process does not need to be recorded manually, the checking or calibration result is automatically output, the checking is time-saving and labor-saving, the speed is high, and the checking result is accurate and objective.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic configuration diagram of a first embodiment of an automatic checking apparatus for a ground coefficient tester according to the present invention.
Fig. 2 is a schematic block diagram of an electronic test device in the automatic verification device of fig. 1.
Fig. 3 is another schematic block diagram of an electronic test device in the automatic verification device of fig. 1.
Fig. 4 is another schematic block diagram of an electronic test device in the automatic verification device of fig. 1.
Fig. 5 is a schematic configuration diagram of a second embodiment of an automatic checking apparatus for a ground coefficient tester according to the present invention.
FIG. 6 is a schematic flow chart diagram of a first embodiment of an automatic verification method for a ground based coefficient tester of the present invention.
FIG. 7 is a schematic flow chart diagram of a second embodiment of the automatic verification method for a ground based coefficient tester of the present invention.
Description of reference numerals:
1. a force or pressure sensor; 2. a reaction frame; 3. a jack;
4. an oil pressure gauge; 5. an electronic test device; 6. a hydraulic pump;
7. an oil pressure sensor; 8. converting a tee joint; 9. a load board area input unit;
10. an oil pressure gauge value setter; 11. a value presetter for an oil pressure gauge;
12. a first processor; 13. a second processor; 14. a display;
15. a communicator; 16. and (4) terminal equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The embodiment of the invention provides an automatic checking device for a foundation coefficient tester, which is described in detail below.
First embodiment of automatic checking device for ground coefficient tester
Fig. 1 is a schematic configuration diagram of a first embodiment of an automatic checking apparatus for a ground coefficient tester according to the present invention.
As shown in fig. 1, the ground coefficient tester may include a jack 3, a bearing plate (not shown), a hydraulic pump 6 and an oil pressure gauge 4, the hydraulic pump 6 is connected to the jack 3 through a pipeline, and the oil pressure gauge 4 is connected to the hydraulic pump 6, which are well known in the art and are not described again, wherein the hydraulic pump 6 may be a manual hydraulic pump or the like known in the art, and the oil pressure gauge 4 may be various pressure gauges.
As shown in fig. 1, the automatic verification apparatus for a ground coefficient tester includes a counterforce device, a force or pressure sensor 1, and an electronic test device 5.
The counterforce device is used for connecting the jack 3 and providing counterforce for the jack 3 when the hydraulic pump 6 carries out each stage of loading on the jack 3. The reaction device may be any structure for realizing the function, such as the reaction frame 2 shown in the figure, and may also be a press machine or the like generally used in the foundation coefficient test, and thus, the description thereof is omitted.
The force or pressure sensor 1 is arranged above the jack 3 and used for sensing the loading value of each stage at the sensor end when the hydraulic pump 6 loads the jack 3 at each stage. When the force sensor is adopted, each level of loading value at the sensor end is a sensed force value; when a pressure sensor is used, the loading value of each stage at the sensor end is the sensed pressure value, because the pressure sensor is actually a sensor for measuring pressure. Of course, the force or pressure sensor 1 may also be arranged below the jack 3, as shown in fig. 5.
The electronic testing device 5 is connected with the force or pressure sensor 1 and used for collecting the loading value of each stage of the sensor end, setting the loading value of each stage of the oil pressure meter, setting the area of the bearing plate and outputting a correlation formula between the indication value (or reading) of the oil pressure meter 4 and the standard load strength of the bearing plate, wherein the loading value of each stage of the oil pressure meter is the oil pressure strength applied when the hydraulic pump 6 displayed by the oil pressure meter 4 carries out loading of each stage on the jack 3.
The electronic testing device 5 is connected with the force or pressure sensor 1, so that the loading value of each stage at the sensor end can be acquired from the force or pressure sensor 1.
The electronic test device 5 can set the loading value of each stage of the oil pressure gauge in any suitable manner. For example, the following is described in conjunction with fig. 2 and 3.
Fig. 2 is a schematic block diagram of an electronic test device in the automatic verification device of fig. 1. As shown in fig. 2, the electronic test device 5 may include an oil pressure gauge value setter 10 for inputting a loading value of the oil pressure gauge per stage at the time of loading per stage. Thus, the user can know the value of the load of each stage of the oil pressure gauge from the indication value of the oil pressure gauge 4, and manually input the value of the load of each stage of the oil pressure gauge into the electronic test device 5 through the oil pressure gauge value setter 10 every time the load is applied.
Fig. 3 is another schematic block diagram of an electronic test device in the automatic verification device of fig. 1. As shown in fig. 3, the electronic test device 5 may include an oil pressure gauge value presetter 11 for presetting a loading value of each stage of the oil pressure gauge. Thus, the loading value is carried out according to the oil pressure gauge value set in the electronic testing device 5 before verification, so that the loading value of each stage of the oil pressure gauge does not need to be input in each loading, the time can be saved, and the use by a user is convenient.
The electronic test device 5 can set the carrier area in any suitable way. For example, as shown in FIG. 2, the electrical testing apparatus 5 may include a loading board area input device 9, and the loading board area can be manually input into the electrical testing apparatus 5 through the loading board area input device 9, for example, the loading board area may be 300mm, 400mm, 600mm, etc. Alternatively, as shown in FIG. 3, the electrical testing apparatus 5 may comprise a carrier plate area selector, by which a carrier plate area can be manually selected, for example, 300mm or 400mm or 600mm from a plurality of specifications.
The verification process of the automatic verification device for the foundation coefficient tester of the embodiment comprises the following steps:
the oil pressure intensity applied when the hydraulic pump 6 applies load to the jack 3 in each stage, that is, the load value of each stage of the oil pressure gauge can be obtained by the oil pressure gauge 4 connected to the hydraulic pump 6. The load value of each stage at the sensor end when the hydraulic pump 6 loads the jack 3 at each stage can be sensed by the force or pressure sensor 1 arranged above or below the jack 3. The loading value of each stage of the oil pressure gauge and the loading value of each stage of the sensor end are fed back to the electronic testing device 5. The electronic testing device 5 outputs a correlation formula of the oil pressure representation value and the standard load strength of the bearing plate according to the loading value of each level of the sensor end, the loading value of each level of the oil pressure meter and the area of the bearing plate, thereby completing the verification or calibration.
The working process of the automatic checking device for the foundation coefficient tester is described in detail as follows:
the force or pressure sensor 1 senses the loading value of each stage of the force or pressure sensor end when the hydraulic pump 6 is used for loading the jack 3 at each stage and inputs the loading value into the electronic testing device 5, and the loading value of each stage of the sensor end is X1，X2...Xj...XkWherein X iskLoading a value for the sensor end during the kth level loading;
the oil pressure gauge 4 displays the oil pressure intensity applied when the hydraulic pump 6 loads the jack 3 in each stage, and the loading value of each stage of the oil pressure gauge is P1，P2...Pj...PkIn which P iskLoading value of an oil pressure gauge during the k-th level loading;
j. k is the number of terms, and j is more than or equal to 1 and less than k;
the electronic testing device 5 collects the loading value of each level of the sensor end, sets the loading value of each level of the oil pressure gauge and the area of the bearing plate, and determines and outputs a correlation relation between the indication value of the oil pressure gauge 4 and the standard load strength of the bearing plate according to the collected and set values.
For example, as shown in fig. 2-4, the electronic test device 5 may include a first processor 12 and a second processor 13.
The first processor 12 determines a correlation expression P ═ m between the indication value of the oil pressure gauge 4 and the sensing value of the force or pressure sensor 1 based on the load value of each stage of the sensor terminal and the load value of each stage of the oil pressure gauge0X + n, where P is the value of the oil pressure gauge 4, X is the value sensed by the force or pressure sensor 1, and m0Is a coefficient, n is a constant term.
The second processor 13 determines a correlation between the indication value of the oil pressure gauge 4 and the standard load strength of the carrier plate according to a correlation between the indication value of the oil pressure gauge 4 and the sensing value of the force or pressure sensor 1 and the area of the carrier plate:
wherein,
p is the indication value of the oil pressure gauge 4, sigma is the load strength of the bearing plate, m is a coefficient, and n is a constant term.
In the foundation coefficient test, the foundation coefficient test can be completed by utilizing the correlation formula of the oil pressure representation value obtained by the automatic calibration device and the standard load strength of the bearing plate. The ground coefficient test is well known in the art and will not be described further.
In addition, the electronic test device 5 may also output at least one of the following information: the calibration curve comprises loading values of each stage of the sensor end, loading values of each stage of the oil pressure gauge, the area of the bearing plate, a correlation formula of an oil pressure value and a force or pressure sensor sensing value, a calibration curve of the oil pressure value and the force or pressure sensor sensing value, and a calibration curve of the oil pressure value and the standard load strength of the bearing plate. Therefore, the information can be directly displayed to an end user or transmitted to other devices, and corresponding data can be conveniently and visually observed.
In this specification, "output" includes both output to an end user, i.e., display to a user, and output to other devices, i.e., transmission of corresponding data to other devices. Accordingly, as shown in FIG. 4, electronic test device 5 may include a display 14 to display data therein to an end user. The electronic test device 5 may also include a communicator 15 in communication with the terminal equipment 16 so that data may be transferred between the electronic test device 5 and the terminal equipment 16 to facilitate data export, storage and further processing. The data includes, for example, a load value of each stage of the sensor end, a load value of each stage of the oil pressure gauge, an area of the carrier plate, a correlation equation between an indication value of the oil pressure gauge 4 and a sensing value of the force or pressure sensor 1, a correlation equation between an indication value of the oil pressure gauge 4 and a standard load strength of the carrier plate, a calibration curve between an indication value of the force or pressure oil pressure and a sensing value of the force or pressure sensor, a calibration curve between an indication value of the oil pressure gauge 4 and a standard load strength of the carrier plate, and the like. The terminal device 16 may be a PC and/or a printer, etc.
Therefore, according to the automatic calibration device for the foundation coefficient tester of the embodiment, the electronic test device can be used for collecting the loading value of each stage of the sensor end, setting the loading value of each stage of the oil pressure meter, setting the area of the bearing plate, and automatically outputting the correlation relation between the oil pressure value and the standard load strength of the bearing plate, thereby completing calibration or calibration. Therefore, data in the checking process does not need to be recorded manually, the checking or calibration result is automatically output, the checking is time-saving and labor-saving, the speed is high, and the checking result is accurate and objective.
Second embodiment of automatic checking device for ground coefficient tester
Fig. 5 is a schematic configuration diagram of a second embodiment of an automatic checking apparatus for a ground coefficient tester according to the present invention. The present embodiment is basically the same in structure as the previous embodiment, and only the differences will be described below.
As shown in fig. 5, the automatic checking apparatus for a ground coefficient tester of the present invention may further include an oil pressure sensor 7 and a three-way switch 8.
The first end of the conversion tee joint 8 is connected with the oil pressure gauge 4, the second end of the conversion tee joint is connected with the oil pressure sensor 7, and the third end of the conversion tee joint is connected with the hydraulic pump 6. In this way, the hydraulic sensor 7 can sense the strength of the hydraulic pressure applied when the hydraulic pump 6 applies the jack 3 in each stage, and the value sensed by the hydraulic sensor 7 indicates the value applied by the hydraulic gauge in each stage. The electronic test device 5 is also connected with the oil pressure sensor 7 to collect the sensing value of the oil pressure sensor 7.
In the automatic calibration device for the ground coefficient tester of the present embodiment, the electronic testing device 5 is connected to the oil pressure sensor 7, and the sensing value of the oil pressure sensor 7 represents the loading value of each stage of the oil pressure gauge, so that the electronic testing device 5 can automatically collect not only the loading value of each stage of the sensor, but also the loading value of each stage of the oil pressure gauge. Therefore, the loading value of each stage of the oil pressure gauge does not need to be manually input or preset as described previously, the automation degree of the whole device is improved, the time and labor are saved during the verification, the speed is high, and the verification result is accurate and objective.
In addition, when the device is used, in order to ensure accurate data, the sensing value of the oil pressure sensor 7 and the indicating value of the oil pressure gauge 4 should be consistent, and when the deviation exists between the sensing value of the oil pressure sensor 7 and the indicating value of the oil pressure gauge 4, the oil pressure sensor 7 and the oil pressure gauge 4 need to be calibrated in time, so that errors and calculation result errors are not easy to occur, and the checking result is more accurate and objective.
In addition, fig. 5 shows that the force or pressure sensor 1 is arranged below the jack 3, but it may of course also be arranged above the jack 3 as shown in fig. 1.
The automatic verification method for the ground coefficient tester of the present invention is described below.
First embodiment of automatic verification method for ground coefficient tester
FIG. 6 is a schematic flow chart diagram of a first embodiment of an automatic verification method for a ground based coefficient tester of the present invention.
As shown in fig. 6, the automatic verification method for a ground coefficient tester includes:
a connecting step 100, comprising: connecting the jack 3 to a counter force device, such as a counter force frame 2, arranging a force or pressure sensor 1 above or below the jack 3, and connecting an electronic test device 5 with the force or pressure sensor 1;
a loading step 200, comprising: the jack 3 is loaded step by the hydraulic pump 6, and during each step of loading, the electronic testing device 5 collects the loading value of each step of the sensor end sensed by the force or pressure sensor 1 and sets the loading value of each step of the oil pressure gauge, wherein the loading value of each step of the oil pressure gauge is the oil pressure intensity applied when the hydraulic pump 6 is used for loading each step of the jack 3 and is displayed by the oil pressure gauge 4;
the verification step 300 includes: the electronic testing device 5 determines the correlation expression between the indication value of the oil pressure gauge 4 and the standard load strength of the bearing plate according to the loading value of each stage of the force or pressure sensor end, the loading value of each stage of the oil pressure gauge and the area of the bearing plate.
Thus, during the loading step 200, the loading value of each stage of the sensor end and the loading value of each stage of the oil pressure gauge are fed back to the electronic testing device 5, and then, in the verification step 300, the electronic testing device 5 determines the correlation between the indication value of the oil pressure gauge 4 and the standard load strength of the bearing plate according to the loading value of each stage of the sensor end, the loading value of each stage of the oil pressure gauge and the area of the bearing plate.
In the loading step 200, the step of setting the loading value of each stage of the oil pressure gauge includes manually inputting the loading value of each stage of the oil pressure gauge into the electronic test device 5 during each stage of loading. At this time, when loading each stage, the user can know the loading value of each stage of the oil pressure gauge through the indication value of the oil pressure gauge 4, and then manually input the loading value of each stage of the oil pressure gauge into the electronic test device 5 through the oil pressure gauge value setter 10, for example.
In the loading step 200, the step of setting the loading value of each stage of the oil pressure gauge includes presetting the loading value of each stage of the oil pressure gauge in the electronic test device 5. Thus, the loading value is carried out according to the oil pressure gauge value set in the electronic testing device 5 before verification, so that the loading value of each stage of the oil pressure gauge does not need to be input in each loading, the time can be saved, and the use by a user is convenient.
In the loading step 200, during each stage of loading, the electronic test device 5 collects a plurality of sensor end per-stage loading values and sets a plurality of corresponding oil pressure gauge per-stage loading values. This can improve the accuracy of the data.
In the verification step 300, the electronic test device 5 determines a correlation between the indication value of the oil pressure gauge 4 and the standard load strength of the carrier plate according to the loading value of each stage of the force or pressure sensor, the loading value of each stage of the oil pressure gauge, and the area of the carrier plate.
Specifically, the force or pressure sensor 1 senses a sensor-end per-stage loading value of X1，X2...Xj...XkWherein X iskLoading a value for the sensor end during the kth level loading; the loading value of each stage of the oil pressure gauge displayed by the oil pressure gauge 4 is P1，P2...Pj...PkIn which P iskThe loading value of the oil pressure gauge during the kth-level loading is shown, j and k are term numbers, and j is more than or equal to 1 and is less than k;
for example, the electronic test device 5 may determine the correlation expression P ═ m between the indication value of the oil pressure gauge 4 and the sensing value of the force or pressure sensor 1 according to the loading value of each stage of the sensor terminal and the loading value of each stage of the oil pressure gauge0X + n, where P is the value of the oil pressure gauge 4, X is the value sensed by the force or pressure sensor 1, and m0Is a coefficient, n is a constant term.
Then, the electronic testing device 5 determines the correlation between the indication value of the oil pressure gauge 4 and the standard load strength of the carrier plate according to the correlation between the indication value of the oil pressure gauge 4 and the sensing value of the force or pressure sensor 1 and the area of the carrier plate:
wherein,
p is the indication value of the oil pressure gauge 4, sigma is the load strength of the bearing plate, m is a coefficient, and n is a constant term.
In the foundation coefficient test, the foundation coefficient test can be completed by utilizing the correlation formula of the oil pressure representation value and the standard load strength of the bearing plate, which is obtained by the automatic calibration device. This is well known in the art and will not be described in detail.
Therefore, according to the automatic calibration method for the foundation coefficient tester of the embodiment, the electronic test device can be used for collecting the loading value of each stage of the sensor end, setting the loading value of each stage of the oil pressure gauge, and automatically outputting the correlation relation between the oil pressure representation value and the standard load strength of the bearing plate, so that calibration or calibration is completed. Therefore, data in the checking process does not need to be recorded manually, the checking or calibration result is automatically output, the checking is time-saving and labor-saving, the speed is high, and the checking result is accurate and objective.
In addition, the electronic test device 5 may also output at least one of the following information: the calibration curve comprises loading values of each stage of the sensor end, loading values of each stage of the oil pressure gauge, the area of the bearing plate, a correlation formula of an oil pressure value and a force or pressure sensor sensing value, a calibration curve of the oil pressure value and the force or pressure sensor sensing value, and a calibration curve of the oil pressure value and the standard load strength of the bearing plate. Therefore, the information can be directly displayed to an end user or transmitted to other devices, and corresponding data can be conveniently and visually observed.
In addition, the automatic verification method for the ground coefficient tester of the present invention may further include a communication step (400) of communicating the electronic test device 5 with the terminal device 16, which may be implemented using the communicator 15 of the electronic test device 5. Thus, the output data can be derived, and the data can be conveniently stored and further processed, such as the loading value of each level of the sensor end, the loading value of each level of the oil pressure gauge, the area of the bearing plate, the correlation formula of the indication value of the oil pressure gauge 4 and the sensing value of the force or pressure sensor 1, the correlation formula of the indication value of the oil pressure gauge 4 and the standard load strength of the bearing plate, the calibration curve of the indication value of the force or pressure oil pressure and the sensing value of the force or pressure sensor, the calibration curve of the indication value of the oil pressure gauge 4 and the standard load strength of the bearing plate, and the like. The terminal device 16 may be a PC and/or a printer, etc.
Second embodiment of automatic verification method for ground coefficient tester
FIG. 7 is a schematic flow chart diagram of a second embodiment of the automatic verification method for a ground based coefficient tester of the present invention. This embodiment is basically the same as the previous embodiment, and the differences are described in detail below.
As shown in fig. 7, in this embodiment, the connecting step 100 further includes: a first end of the conversion tee joint 8 is connected with the oil pressure gauge 4, a second end of the conversion tee joint is connected with the oil pressure sensor 7, a third end of the conversion tee joint is connected with the hydraulic pump 6, and the electronic testing device 5 is connected with the oil pressure sensor 7. In the loading step 200, during each stage of loading, the electronic test device 5 acquires a sensor end per-stage loading value and a sensing value of the oil pressure sensor 7, and the sensing value of the oil pressure sensor 7 indicates a per-stage loading value of the oil pressure gauge.
In the automatic calibration method for the ground coefficient tester of the embodiment, the electronic testing device 5 is connected to the oil pressure sensor 7, and the sensing value of the oil pressure sensor 7 represents the loading value of each stage of the oil pressure gauge, so that the electronic testing device 5 can automatically acquire not only the loading value of each stage of the sensor end, but also the loading value of each stage of the oil pressure gauge. Therefore, the loading value of each stage of the oil pressure gauge does not need to be manually input or preset as described previously, the automation degree of the whole checking method is improved, the checking is time-saving and labor-saving, the speed is high, and the checking result is accurate and objective.
Further, the method may further include a calibration step 210 of calibrating the hydraulic sensor 7 or the hydraulic gauge 4 when the sensing value of the hydraulic sensor 7 does not match the hydraulic gauge value. Therefore, errors and calculation result errors are not easy to occur, and the checking result is more accurate and objective.
It is to be understood that the above-described embodiments of the invention are merely illustrative of or illustrative of the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The utility model provides an automatic calibration equipment for foundation coefficient tester, foundation coefficient tester includes jack, loading board, hydraulic pump and oil pressure gauge for foundation coefficient tester's automatic calibration equipment's characterized in that includes:
the counterforce device is connected with the jack and provides counterforce for the jack when the hydraulic pump loads the jack at each stage;
the force or pressure sensor is arranged above or below the jack and used for sensing each level of loading value of the sensor end when the hydraulic pump carries out each level of loading on the jack; and
the electronic testing device is connected with the force or pressure sensor and is used for acquiring the loading value of each stage of the sensor end, acquiring or setting the loading value of each stage of the oil pressure meter, setting the area of the bearing plate and outputting a correlation formula of the oil pressure value and the standard load strength of the bearing plate, wherein the loading value of each stage of the oil pressure meter is the oil pressure strength applied when the hydraulic pump displayed by the oil pressure meter carries out each stage of loading on the jack;
also comprises an oil pressure sensor and a conversion tee joint,
the first end of the conversion tee joint is connected with the oil pressure gauge, the second end of the conversion tee joint is connected with the oil pressure sensor, and the third end of the conversion tee joint is connected with the hydraulic pump;
the electronic testing device is further connected with the oil pressure sensor to collect a sensing value of the oil pressure sensor, wherein the sensing value of the oil pressure sensor represents a loading value of each stage of the oil pressure gauge.
2. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic test device comprises an oil pressure gauge value setter used for inputting loading values of each stage of the oil pressure gauge during loading of each stage.
3. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic testing device comprises an oil pressure gauge value pre-setting device used for pre-setting each stage loading value of the oil pressure gauge.
4. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic test device comprises a bearing plate area input device or selector for setting the area of the bearing plate.
5. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic test device comprises a first processor and a second processor,
the first processor determines a correlation expression between the oil pressure indication value and the force or pressure sensor sensing value according to the loading value of each level of the sensor end and the loading value of each level of the oil pressure gauge,
and the second processor determines a correlation formula of the oil pressure representation value and the standard load strength of the bearing plate according to the correlation formula of the oil pressure representation value and the sensing value of the force or pressure sensor and the area of the bearing plate.
6. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic test device also outputs at least one of the following information: the calibration curve comprises loading values of each stage of the sensor end, loading values of each stage of the oil pressure gauge, the area of the bearing plate, a correlation formula of an oil pressure value and a force or pressure sensor sensing value, a calibration curve of the oil pressure value and the force or pressure sensor sensing value, and a calibration curve of the oil pressure value and the standard load strength of the bearing plate.
7. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the electronic test device comprises a display and/or a communicator which is communicated with the terminal equipment.
8. The automatic verification apparatus for ground coefficient tester as claimed in claim 1,
the counterforce device is a counterforce frame or a press machine.
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| CN201510073780.7A CN104612123B (en) | 2015-02-11 | 2015-02-11 | For the automatic check device of foundation coefficient tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510073780.7A CN104612123B (en) | 2015-02-11 | 2015-02-11 | For the automatic check device of foundation coefficient tester |
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| CN104612123A CN104612123A (en) | 2015-05-13 |
| CN104612123B true CN104612123B (en) | 2016-03-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105203401A (en) * | 2015-10-16 | 2015-12-30 | 中铁第五勘察设计院集团有限公司 | Rapid plate load testing instrument |
| CN106940232A (en) * | 2017-04-28 | 2017-07-11 | 上海市计量测试技术研究院 | The load-bearing digital independent equipment and read method of a kind of jack |
| CN109001052A (en) * | 2018-06-25 | 2018-12-14 | 中路高科交通检测检验认证有限公司 | A kind of metering system and method for drop hammer deflection meter impact load |
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| CN104612123A (en) | 2015-05-13 |
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