CN103323170A - Pretightening force measuring system and method of bolt set connection - Google Patents
Pretightening force measuring system and method of bolt set connection Download PDFInfo
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- CN103323170A CN103323170A CN2013102351173A CN201310235117A CN103323170A CN 103323170 A CN103323170 A CN 103323170A CN 2013102351173 A CN2013102351173 A CN 2013102351173A CN 201310235117 A CN201310235117 A CN 201310235117A CN 103323170 A CN103323170 A CN 103323170A
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Abstract
The invention provides a pretightening force measuring system and method of bolt set connection. The system comprises a gasket type force sensor, a testing box connected with the gasket type force sensor, and processing equipment connected with the testing box, wherein the gasket type force sensor is provided with a hole for penetration of a bolt, when the bolt is screwed up, obtained pretightening force signals are transmitted to the testing box, signal conditioning is carried out on the pretightening force signals by the testing box, and the pretightening force signals after the conditioning are transmitted to the processing equipment to be processed. According to the pretightening force measuring system and method, measurement is convenient, the pretightening force in the screwing-up process of a bolt set and after the screwing-up process is monitored in on-site, shaking and other environments, and the pretightening force measuring system and method is portable to be used for measuring.
Description
Technical field
The present invention relates to mechanical manufacturing field, refer to pretightning force measuring system and method that a kind of bolt group connects especially.
Background technology
Because bolt connects and can produce very big clamping force between connected piece, can realize quickly and easily removably connecting, so all trades and professions in engineering are widely used machine industry especially.As everyone knows, it is to produce reliable clamping force at connected piece that bolt connects the most basic purpose, i.e. the pretightning force of bolt inside.But bolt pretightening is difficult to directly monitor and control in rundown process, so often apply suitable pretightning force by indirect methods such as calibrated wrench methods in bolt inside in the actual engineering.And bolt often is that a plurality of bolts use in groups when using, and all bolts in the bolt group is applied suitable pretightning force make connected piece clamp.For estimate the bolt group tighten technology and bolt group tighten after at the anti-loosening property of the vibrations environment of etc.ing, often needs acquisition bolt pretightening is also monitored in real time.The measurement of bolt pretightening at present mainly contains following several method:
One: paste foil gauge on the body of bolt
This method can directly obtain the pretightning force of bolt or bolt group, but this method has a lot of restrictions.At first this method need be pasted a plurality of foil gauges at the screw rod of each tested bolt in implementation process, and is not only loaded down with trivial details, and the level that the operator pastes foil gauge is had relatively high expectations; Secondly, this method requires to reserve between tested bolt and the connected piece enough spaces and goes between to foil gauge, and the space that can draw the foil gauge lead-in wire will be arranged on connected piece.
Two: direct length-measuring method
Directly length-measuring method is by bolt is tightened before and measure the length of bolt after tightening respectively, contrasts two secondary data and draws the elongation of bolt after tightening, and obtains tightening the pretightning force of bolt afterwards according to effective connection length and the bolt Rigidity Calculation of bolt.This method can record bolt pretightening more accurately, but is subjected to the restriction of connected piece form bigger, can not measure the pretightning force of blind hole bolt groups such as casing.
Three: supercritical ultrasonics technology
Supercritical ultrasonics technology is to realize the measurement of bolt pretightening in the different principle of the bolt internal communication speed of different stress according to ultrasound wave.This method is lossless detection method, and it is comparatively convenient to test, but need carry out pre-service to two end faces of bolt, and it is bigger to need couplant and measuring accuracy influenced by the operator during measurement, and is not suitable for the pretightning force monitoring of bolt group in environment such as vibrations;
Four: other method
In order to obtain bolt pretightening, people design a lot of ways, application number is that 201020300479.8 utility model patent has proposed a kind of pretightning force measuring method that bolt pretightening is converted into hydraulic pressure, the patent No. provides a kind of bolt group to connect the integral pre-tightening force test method for 200720087776.7 utility model patent, but these methods are mostly developed the device that maybe needs it is special that bolt is packed at specific application area, can't monitor each bolt pretightening in any bolt group, can not be to the scene, the pretightning force of bolt group is directly measured in the environment such as vibrations.
Summary of the invention
The technical problem to be solved in the present invention provides pretightning force measuring system and the method that a kind of bolt group connects, measure and monitor in the bolt group rundown process and the portable measurement of pretightning force after tightening in the environment such as convenient and suitable scene, vibrations, sequential scheduling is tightened the formulation of technology and the anti-loosening property evaluation in the use provides effective instrument for the bolt group is tightened.
For solving the problems of the technologies described above, the pretightning force measuring system that embodiments of the invention provide a kind of bolt group to connect comprises:
Gasket type power sensor;
The test casing that is connected with gasket type power sensor; And
The treatment facility that is connected with described test casing;
Wherein, described gasket type power sensor has the through hole that passes for bolt, and send the pretightning force signal that bolt obtains to described test casing when being tightened, and by described test casing described pretightning force signal is carried out signal condition, and the pretightning force signal after will nursing one's health sends described treatment facility to and handles.
Wherein, described gasket type power sensor is the cylindrical elastomer that posts foil gauge, and described elastic body has the through hole that passes for bolt.
Wherein, described system also comprises: be arranged at the head of described bolt and the pad between the described elastic body; And be arranged at wear washer between described elastic body and the test specimen; Wherein, described test specimen has hole and the internal thread that the screw rod of described bolt passes.
Wherein, described test casing has internal power supply and externally fed power supply.
Wherein, described treatment facility is pocket computer, is used for the pretightning force signal that described test casing sends is stored and shown.
Wherein, described gasket type power sensor is a plurality of, and is corresponding one by one with bolt.
The pretightning force measuring method that embodiments of the invention also provide a kind of bolt group to connect comprises:
Each pad sensor is passed bolt, obtain the pretightning force signal that each pad sensor collects;
Described pretightning force signal is carried out signal condition, the pretightning force signal after obtaining nursing one's health;
Pretightning force signal after the described conditioning is handled.
Wherein, obtain also to comprise before the pretightning force signal that each pad sensor collects:
The data sampling of pretightning force signal is set at interval.
Wherein, the step that the pretightning force signal after the described conditioning is handled comprises:
Storage and/or show described pretightning force signal, wherein, at same gasket type power sensor when last pretightning force signal and a last pretightning force signal, during greater than the value of setting, store current described pretightning force signal as if the two the absolute value of difference.
Wherein, the step of storing described pretightning force signal comprises:
The pretightning force signal that receives is unpacked, and be assigned to each passage that sets;
The data of each passage are carried out depositing master cache in after the initial data filtering;
Data after the filtering and the data of last stored are compared, when the difference of the pretightning force signal value of the pretightning force signal value of same passage and last stored during greater than set axle power sampling interval, deposit filtered data in a buffer memory array;
The CPU that waits for treatment facility stored during the free time, did not then directly deposit the data after the filtering in interim buffer memory array if open an axle power sampling interval.
Wherein, if it is 1ms that sampling time interval is set, then directly this data in buffer is stored during initialization; If sampling interval is set greater than 1ms, then dynamically adjust filtering data length according to sampling interval, carry out secondary data filtering.
Wherein, said method also comprises:
The pretightning force signal that gasket type power sensor is collected carries out non-linear adjustment.
Wherein, adopt the mode of grouping, each the gasket type power sensor in every group is passed bolt, obtain the pretightning force signal that each gasket type power sensor collects in every group.
The beneficial effect of technique scheme of the present invention is as follows:
Such scheme, measure and monitor in the bolt group rundown process and the portable measurement of pretightning force after tightening in the environment such as convenient and suitable scene, vibrations, can be easily in the laboratory, environment such as erecting yard, vibrations directly measure bolt and bolt group pretightning force, tighten technology, the research bolt group effective measures that provide such as locking under work condition environments such as vibrations for formulating and estimate the bolt group.
Description of drawings
Fig. 1 is the measuring method of bolt pretightening in groups general illustration of the present invention;
Fig. 2 is the test macro of bolt pretightening in groups general structure synoptic diagram of the present invention;
Fig. 3 is the measuring method of bolt pretightening in groups particular flow sheet of the present invention;
Fig. 4 is the connection layout of Intermediate gasket sensor of the present invention and bolt, wear washer;
Fig. 5 is pretightning force measuring system structured flowchart of the present invention;
Fig. 6 is three kinds of grouping schemes when utilizing bolt group pretightning force measuring method of the present invention and system that the pretightning force of certain housing plate coupling bolt group is studied.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Shown in Fig. 1,2 and 4, the pretightning force measuring system that embodiments of the invention provide a kind of bolt group to connect comprises: gasket type power sensor 1; The test casing 2 that is connected with gasket type power sensor 1; And the treatment facility 3 that is connected with described test casing 2; Wherein, described gasket type power sensor 1 has the through hole that passes for bolt, and send the pretightning force signal that bolt obtains to described test casing 2 when being tightened, and carry out signal condition by 2 pairs of described pretightning force signals of described test casing, and the pretightning force signal after will nursing one's health sends described treatment facility 3 to and handles.
Wherein, as shown in Figure 4, described gasket type power sensor 1 is the cylindrical elastomer 11 that posts foil gauge, and described elastic body 11 has the through hole that passes for bolt; During use, system also comprises: be arranged at the head 21 of described bolt and the pad 12 between the described elastic body 11; And be arranged at wear washer 13 between described elastic body 11 and the test specimen; Wherein, described test specimen has the hole that the screw rod 22 of described bolt passes and the internal thread that is screwed into.
In the above embodiment of the present invention, described test casing has internal power supply and externally fed power supply.Wherein, internal electric source is as being lithium battery, and the externally fed power supply for example, is outside mains supply.
In the above embodiment of the present invention, described treatment facility is computing machine, is used for the pretightning force signal that described test casing sends is stored and shown.Wherein, described computing machine can specifically be realized when the storage of carrying out the pretightning force signal and demonstration in the following manner:
At same gasket type power sensor when last pretightning force signal and a last pretightning force signal, during greater than the value of setting, store current described pretightning force signal as if the two the absolute value of difference.
Concrete, the step of storing described pretightning force signal comprises:
The pretightning force signal that receives is unpacked, and be assigned to each passage that sets;
The data of each passage are carried out depositing master cache in after the initial data filtering;
Data after the filtering and the data of last stored are compared, when the difference of the pretightning force signal value of the pretightning force signal value of same passage and last stored during greater than set axle power sampling interval, deposit filtered data in a buffer memory array;
The CPU that waits for treatment facility stored during the free time, did not then directly deposit the data after the filtering in interim buffer memory array if open an axle power sampling interval.
Wherein, if it is 1ms that sampling time interval is set, then directly this data in buffer is stored during initialization;
If sampling interval is set greater than 1ms, then dynamically adjust filtering data length according to sampling interval, carry out secondary data filtering.
Certainly, above-mentioned computing machine can also carry out non-linear adjustment to the pretightning force signal that gasket type power sensor collects.
During concrete the collection, if the numerous modes that adopt grouping of number of bolts in the bolt group are passed bolt with each the gasket type power sensor in every group, by repeatedly gather obtain every group in the pretightning force signal that collects of each gasket type power sensor.Wherein, gasket type power sensor is corresponding one by one with bolt.
The specific implementation of above-mentioned measuring system is described in conjunction with concrete accompanying drawing and example below again:
As shown in Figure 1, the pretightning force measuring method of bolt group of the present invention is gathered the pretightning force of bolt when being tightened by gasket type power sensor 1, handles, shows and store the pretightning force collection of finishing whole bolt group by conditioning, collection, data to the pretightning force signal then.Select a plurality of gasket type power sensors to connect when measuring the pretightning force of bolt group each bolt is measured, also available less pad sensor group is measured successively.
Accompanying drawing 2 is the pretightning force test macro of bolt group of the present invention, mainly comprises with lower module: gasket type power sensor, test casing and treatment facility.
Gasket type power sensor 1 is to paste foil gauge at cylindrical elastomer to make.Elastic body adopts special material, good rigidly, and load-bearing capacity is strong.Such sensor resonant frequency is higher, is adapted at using under the environment such as vibration.And the characteristics of this sensor maximum are that its own vol is very little, and it is less when introducing the bolt connection bolt to be connected influence.
The pretightning force measuring method that embodiments of the invention also provide a kind of bolt group to connect comprises:
Each pad sensor is passed bolt, obtain the pretightning force signal that each pad sensor collects;
Described pretightning force signal is carried out signal condition, the pretightning force signal after obtaining nursing one's health;
Pretightning force signal after the described conditioning is handled.
Wherein, obtain also to comprise before the pretightning force signal that each pad sensor collects: the data sampling of pretightning force signal is set at interval.
Wherein, the step that pretightning force signal after the described conditioning is handled comprises: store and/or show described pretightning force signal, wherein, at same gasket type power sensor when last pretightning force signal and a last pretightning force signal, if the absolute value of the two difference during greater than the value of setting, is stored current described pretightning force signal.
Wherein, the step of storing described pretightning force signal comprises: the pretightning force signal that receives is unpacked, and be assigned to each passage that sets; The data of each passage are carried out depositing master cache in after the initial data filtering; Data after the filtering and the data of last stored are compared, when the difference of the pretightning force signal value of the pretightning force signal value of same passage and last stored during greater than set axle power sampling interval, deposit filtered data in a buffer memory array; The CPU that waits for treatment facility stored during the free time, did not then directly deposit the data after the filtering in interim buffer memory array if open an axle power sampling interval.
Wherein, if it is 1ms that sampling time interval is set, then directly this data in buffer is stored during initialization; If sampling interval is set greater than 1ms, then dynamically adjust filtering data length according to sampling interval, carry out secondary data filtering.
Wherein, said method also comprises: the pretightning force signal that gasket type power sensor is collected carries out non-linear adjustment.Wherein, adopt the mode of grouping, each gasket type power sensor in every group is passed bolt, obtain the pretightning force signal that each gasket type power sensor collects in every group, by repeatedly tightening the test macro of realizing with less passage the more bolt group of number of bolts is measured.
Concrete, as shown in Figure 3, embodiments of the invention in the laboratory, any environment such as scene, shaking table can both be convenient for measuring the pretightning force of bolt group.The direct measuring method of bolt pretightening in groups of the present invention comprises the steps:
Step 4 arranges service aisle number (when transmission and processing pretightning force signal, can be divided into a plurality of service aisles transmission and processing), data acquisition interval, non-linear adjustment switch, and each passage that uses is carried out clear operation;
Step 5 is passed bolt with each gasket type power sensor;
Step 6, data acquisition software are clicked " beginning to gather " button and are begun data acquisition;
Step 7 is screwed into each bolt the screw thread in the test specimen successively, and data acquisition software is finished pretightning force data acquisition and demonstration automatically;
Step 8, data acquisition finish to press " stopping to gather ", and derived data is to the excel form;
Step 9, powered-down, data acquisition software disconnect the connection of pad sensor, test casing, computing machine.
Specify the embodiment that bolt in groups of the present invention connects the pretightning force measuring method below.
At first before carrying out the pretightning force data acquisition, need to go up the installation data capture program at computing machine (as notebook computer) earlier, the battery of notebook computer and test casing is full of, make things convenient for in-site measurement.As shown in Figure 2, when carrying out data acquisition, earlier gasket type power sensor, test casing and computing machine are connected the turn-on data acquisition software.The notebook data acquisition system is lower to the computing machine configuration requirement, and data acquisition system (DAS) and computing machine are by the USB interface communication, and the computing machine of any mainstream configuration can be finished the data acquisition task.For convenience of collection in worksite, system adopts notebook computer to carry out data acquisition.The test casing can be selected self powered battery and two kinds of working methods of external power source, and self battery is rechargeable battery, can use continuously after being full of above more than 6 hours.Open data acquisition software after connecting each module, correlation test information such as current test name, date are arranged, these information are saved in the data file of derivation after collection is finished.Set the correlation test information test casing power supply of turn-on data acquisition system afterwards, this embodiment is selected battery powered mode.For making sensor, data acquisition system (DAS) steady operation, energising relief system warm-up 10 minutes about measure again.
Before the formal image data of beginning, also have a need of work to carry out, exactly the data acquisition system is arranged, content mainly is set comprises service aisle number, data acquisition interval, non-linear adjustment switch etc.This embodiment adopts the acquisition system of 16 passages, carries out data acquisition with 8 pad sensors.Whether data acquisition software can be opened each passage setting separately, can select each passage of needs during use according to demand, and this example is selected the work of 1-8 passage, other pathway closure.The data sampling of pretightning force can be set at interval in the data acquisition software, comprise the time interval and axle power at interval.Attainable minimum interval is 1ms, and namely sample frequency is 1kHz, is mainly used in the locking test of bolt on the shaking table or bolt group; Attainable maximum time is spaced apart 24h, is mainly used in bolt and tightens the maintenance test that back monitoring pretightning force waits over time; Arranging arbitrarily between maximal value and minimum value of sampling time interval, the sampling precision of control is 1ms.Axle power is used for carrying out at interval non-cutting time data acquisition at interval, namely can gather data in the time interval acquisition system that sets, but before these data of storage earlier with on data compare, the data difference of arbitrary passage of data of having only current data and a last storage is just stored during greater than the value of setting.Native system also has characteristics to be that acquisition software can adjust filter length automatically according to the sampling time interval that the user arranges, and takes into account real time of data acquisition and stability.System provides the non-linear adjustment function of sensor, and whether the user can select to open, and non-linear adjustment status indicator lamp is arranged behind channel selector switch, opens the green that is of non-linear adjustment, otherwise is red.Non-linear adjustment parameter can arrange separately the sensor of each passage equally, and each sensor can divide 5 ends to carry out non-linear correction at most.Each passage during reply was used after the sensor of each passage set carries out clear operation, also can finish the clear operation of all passages by " all zero clearings " that software provides.
Set after the data acquisition software, pad, gasket type power sensor, wear washer successively through on the tested bolt, as shown in Figure 4, are prepared bolt is screwed into the internal thread of test specimen.Pad was identical when pad was with practical set herein, and the supporting surface friction condition does not change in the rundown process to keep.Wear washer is the special pad supporting with sensor, and this pad hardness is very high, and surface smoothness is also fine, mainly plays the protection sensor herein and makes the stressed uniform effect of sensor.The gasket type sensor is the cartridge type strain transducer, and its feature is that volume is small and exquisite, the rigidity height, and this routine Intermediate gasket sensor is applicable to the M10 bolt, can bear the external force of maximum 54kN, overload capacity is 150%.
The pretightning force that this bolt group pretightning force method of testing can be monitored each bolt in the rundown process change and tighten after each bolt leave standstill, pretightning force under the environment such as vibrations changes.Pretightning force with each bolt of bolt group in the monitoring rundown process is changed to example, and " beginning to gather " button that can press acquisition software after all preliminary works are finished begins data acquisition.This moment, the pretightning force that data acquisition software records each bolt automatically changed, and has real-time data to show at the interface of data acquisition software according to good the tightening in proper order and tighten technology accordingly each bolt in the bolt group is tightened of planning.The operator can carry out the monitoring of peak value at any time to any passage in the image data process, only need choose " peak value " check box at the real-time display window top of respective channel.After tightening, needs monitorings bolt group during the situation of change of each bolt pretightening, need tightening after, press " beginning collection " button again.
After finishing, image data presses " stopping to gather " button of acquisition software.In whole process, no matter whether press " beginning to gather " button, data acquisition software shows current sensor force value all the time in real time, it should be noted that clear operation is not carried out to each passage in the interface at acquisition software when sensor stresses, clear operation can not be carried out again after sensor is stressed, otherwise error in data can be caused.Data acquisition finishes all data of back and all stores by the Access database on the software backstage, data are carried out post-processed for convenience, it is the function of Excel file that data acquisition software provides data conversion storage, and the user also can be voluntarily by the conversion of Access database.The power value of each passage and corresponding data acquisition time constitute complete data in the data file, and the time is the unit storage with s, and precision is 0.001, and axle power is the unit storage with kN, and precision is 0.01.
Data acquisition is closed data acquisition software, computing machine after finishing, and closes test casing power supply, disconnects the connection between sensor, test casing and the computing machine.
To sum up, the related bolt group pretightning force measurement mechanism of measuring method of the present invention comprises that mainly system initialization, data acquisition, data are handled, data are stored and data show five modules, as shown in Figure 5.
System initialization module is mainly finished at the data acquisition software end of computing machine, and main contents comprise the setting of Test Information, the relevant setting of data collecting card and the relative parameters setting that data are handled.
Data acquisition module is mainly finished at test casing and the data acquisition software end of system.Main flow process comprises that sensor is converted into electric signal with pressure information, data transmission after the electric signal that the signal condition module is returned sensor is nursed one's health and will be nursed one's health is given data collecting card, is transferred to the workflow that host computer is finished this module by data collecting card by USB interface at last.
Data processing module is mainly finished at computer terminal, at first read the acquired original packet that data collecting card returns, then packet is unpacked and be assigned to each passage, the data of each passage are carried out the master cache that initial data filtering deposits data acquisition program afterwards in, the time interval of any adjacent two data of master cache storage this moment is 1ms, during initialization if sampling time interval is set is that 1ms then directly stores this data in buffer, if sampling interval is set greater than 1ms then dynamically adjusts filtering data length according to sampling interval, carry out secondary data filtering, if load option is at interval opened then the data after the filtering and the data of last stored is compared, when the difference of the data of the pretightning force value of certain passage and last stored deposits filtered data in a buffer memory array during greater than set axle power sampling interval, wait for when computer CPU is idle and storing, then directly do not deposit the data after the filtering in interim buffer memory array if open axle power sampling interval.Data processing module carries out when computer CPU is idle.
Data memory module is mainly finished at computer terminal, stores when computer CPU is idle.Stored Procedure is read by the buffer memory array successively for earlier data processing module being handled data later, be stored to the Access database then, after data acquisition is finished, can select data importing with the Access lane database in the Excel file, finish whole data Stored Procedure.
Data disaply moudle is mainly finished at computer terminal, mainly the data in real time of gathering is presented at the data acquisition interface.Data disaply moudle directly reads the latest data in the master cache, delivers to the display window of acquisition software through the filtering pusher.The data disaply moudle at interval operation of fixing time, data disaply moudle is spaced apart 100ms working time in this example system for use in carrying.
Should select the port number and the corresponding sensor number that are fit to when utilizing bolt group pretightning force measuring method of the present invention and systematic survey bolt group.More and should take the mode of grouping mea-sure when being not suitable for pad sensor of each bolt configuration when number of bolts in the bolt group.Also 8 gasket type sensors ability test macros with this embodiment are example, when research certain housing plate thread set as shown in Figure 6 connect tighten technology or anti-loosening property the time, except determining corresponding technological parameter and test condition, also tackling bolt divides into groups, accompanying drawing 6 provides three kinds of grouping schemes, certainly can divide into groups to all bolts according to priority or other rules of tightening order, number of bolts mostly is available packing ring number of sensors most in each grouping, do the pretightning force monitoring that repeatedly test realizes each bolt with test macro then, each test system is gathered the pretightning force data of different bolt groupings, and technology is tightened in each test and test condition should be controlled strict conformance.
Bolt group pretightning force measuring method provided by the invention and system can be easily in the laboratory, environment such as erecting yard, vibrations directly measure bolt and bolt group pretightning force, tighten technology, the research bolt group effective measures that provide such as locking under work condition environments such as vibrations for formulating and estimate the bolt group.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. the pretightning force measuring system that the bolt group connects is characterized in that, comprising:
Gasket type power sensor;
The test casing that is connected with gasket type power sensor; And
The treatment facility that is connected with described test casing;
Wherein, described gasket type power sensor has the through hole that passes for bolt, and send the pretightning force signal that bolt obtains to described test casing when being tightened, and by described test casing described pretightning force signal is carried out signal condition, and the pretightning force signal after will nursing one's health sends described treatment facility to and handles.
2. the pretightning force measuring system of bolt group connection according to claim 1 is characterized in that described gasket type power sensor is the cylindrical elastomer that posts foil gauge, and described elastic body has the through hole that passes for bolt.
3. the pretightning force measuring system of bolt group connection according to claim 2 is characterized in that, also comprises:
Be arranged at the head of described bolt and the pad between the described elastic body; And
Be arranged at the wear washer between described elastic body and the test specimen;
Wherein, described test specimen has hole and the internal thread that the screw rod of described bolt passes.
4. the pretightning force measuring system of bolt group connection according to claim 1 is characterized in that described test casing has internal power supply and externally fed power supply.
5. the pretightning force measuring system that connects of bolt group according to claim 1 is characterized in that described treatment facility is pocket computer, is used for the pretightning force signal that described test casing sends is stored and shown.
6. the pretightning force measuring system of bolt group connection according to claim 1 is characterized in that described gasket type power sensor is a plurality of, and is corresponding one by one with bolt.
7. the pretightning force measuring method that the bolt group connects is characterized in that, comprising:
Each pad sensor is passed bolt, obtain the pretightning force signal that each pad sensor collects;
Described pretightning force signal is carried out signal condition, the pretightning force signal after obtaining nursing one's health;
Pretightning force signal after the described conditioning is handled.
8. the pretightning force measuring method that connects of bolt group according to claim 7 is characterized in that, obtains also to comprise before the pretightning force signal that each pad sensor collects:
The data sampling of pretightning force signal is set at interval.
9. the pretightning force measuring method that connects of bolt group according to claim 7 is characterized in that the step that the pretightning force signal after the described conditioning is handled comprises:
Storage and/or show described pretightning force signal, wherein, at same gasket type power sensor when last pretightning force signal and a last pretightning force signal, during greater than the value of setting, store current described pretightning force signal as if the two the absolute value of difference.
10. the pretightning force measuring method that connects of bolt group according to claim 9 is characterized in that the step of storing described pretightning force signal comprises:
The pretightning force signal that receives is unpacked, and be assigned to each passage that sets;
The data of each passage are carried out depositing master cache in after the initial data filtering;
Data after the filtering and the data of last stored are compared, when the difference of the pretightning force signal value of the pretightning force signal value of same passage and last stored during greater than set axle power sampling interval, deposit filtered data in a buffer memory array;
The CPU that waits for treatment facility stored during the free time, did not then directly deposit the data after the filtering in interim buffer memory array if open an axle power sampling interval.
11. the pretightning force measuring method that bolt group according to claim 10 connects is characterized in that,
If it is 1ms that sampling time interval is set, then directly this data in buffer is stored during initialization;
If sampling interval is set greater than 1ms, then dynamically adjust filtering data length according to sampling interval, carry out secondary data filtering.
12. the pretightning force measuring method that bolt group according to claim 7 connects is characterized in that, also comprises:
The pretightning force signal that gasket type power sensor is collected carries out non-linear adjustment.
13. the pretightning force measuring method that bolt group according to claim 7 connects is characterized in that, adopts the mode of grouping, and each the gasket type power sensor in every group is passed bolt, obtains the pretightning force signal that each gasket type power sensor collects in every group.
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| CN103592062A (en) * | 2013-10-12 | 2014-02-19 | 南京理工大学 | Axial pre-tightening force sensor |
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| CN104568281A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Vehicle wheel core shaft bolt pretightening force detection device |
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| CN107014527A (en) * | 2017-04-06 | 2017-08-04 | 武汉凡谷电子技术股份有限公司 | Microwave communication filter package tightening state monitoring method |
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| CN108204876A (en) * | 2017-12-25 | 2018-06-26 | 烟台大学 | Pretightning force real-time detection apparatus and method during a kind of bolts assemblies |
| CN108332897A (en) * | 2017-12-04 | 2018-07-27 | 中国飞机强度研究所 | A kind of experimental rig of detection bolt pretightening high temperature variation |
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| CN109477765A (en) * | 2016-06-30 | 2019-03-15 | 株式会社华尔卡 | Device is practiced in fastening, method is practiced in fastening, program is practiced in fastening and fastening practice system |
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| CN109974920A (en) * | 2019-04-12 | 2019-07-05 | 哈尔滨电机厂有限责任公司 | A kind of bolt fastener stress dynamic monitoring method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2142567Y (en) * | 1992-11-25 | 1993-09-22 | 上海标准件三厂 | Working characteristic measuring apparatus for lock nut |
| KR20080019448A (en) * | 2006-08-28 | 2008-03-04 | 위아 주식회사 | Device for measuring axial force |
| CN201083575Y (en) * | 2007-10-26 | 2008-07-09 | 东风汽车有限公司 | Pre-tightening force measuring device for bolt group |
| CN101776500A (en) * | 2009-10-19 | 2010-07-14 | 浙江电力职业技术学院 | Fastener axial force-torsion combine testing machine |
| CN202210007U (en) * | 2011-09-21 | 2012-05-02 | 长江大学 | Experiment device for measuring thread pretightening torque coefficients |
| CN202281671U (en) * | 2011-11-04 | 2012-06-20 | 上海申光高强度螺栓有限公司 | Mobile type axial force meter used for detecting axial force of high strength bolt connection pairs in construction site |
| CN102620877A (en) * | 2012-04-13 | 2012-08-01 | 东北电力科学研究院有限公司 | Method for measuring bolt load by using fixed frequency of bolt |
-
2013
- 2013-06-14 CN CN201310235117.3A patent/CN103323170B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2142567Y (en) * | 1992-11-25 | 1993-09-22 | 上海标准件三厂 | Working characteristic measuring apparatus for lock nut |
| KR20080019448A (en) * | 2006-08-28 | 2008-03-04 | 위아 주식회사 | Device for measuring axial force |
| CN201083575Y (en) * | 2007-10-26 | 2008-07-09 | 东风汽车有限公司 | Pre-tightening force measuring device for bolt group |
| CN101776500A (en) * | 2009-10-19 | 2010-07-14 | 浙江电力职业技术学院 | Fastener axial force-torsion combine testing machine |
| CN202210007U (en) * | 2011-09-21 | 2012-05-02 | 长江大学 | Experiment device for measuring thread pretightening torque coefficients |
| CN202281671U (en) * | 2011-11-04 | 2012-06-20 | 上海申光高强度螺栓有限公司 | Mobile type axial force meter used for detecting axial force of high strength bolt connection pairs in construction site |
| CN102620877A (en) * | 2012-04-13 | 2012-08-01 | 东北电力科学研究院有限公司 | Method for measuring bolt load by using fixed frequency of bolt |
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| CN103592062B (en) * | 2013-10-12 | 2015-09-30 | 南京理工大学 | A kind of axial pretightening force snesor |
| CN103592062A (en) * | 2013-10-12 | 2014-02-19 | 南京理工大学 | Axial pre-tightening force sensor |
| CN104568281A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Vehicle wheel core shaft bolt pretightening force detection device |
| CN103616118A (en) * | 2013-11-28 | 2014-03-05 | 中联重科股份有限公司 | Bolt and detection system and control method for pretightening force of bolt |
| CN103616118B (en) * | 2013-11-28 | 2015-09-30 | 中联重科股份有限公司 | The detection system of bolt and pretightning force thereof, control method |
| CN105372003A (en) * | 2014-08-22 | 2016-03-02 | 北京强度环境研究所 | Bolt pretightening force measurement method |
| CN105372003B (en) * | 2014-08-22 | 2018-02-13 | 北京强度环境研究所 | Tools for bolts ' pretension force measuring method |
| CN104931185B (en) * | 2015-06-02 | 2017-08-04 | 北京天源科创风电技术有限责任公司 | Bolt mounting process performance estimating method and equipment |
| CN104931185A (en) * | 2015-06-02 | 2015-09-23 | 北京天源科创风电技术有限责任公司 | Method and equipment for evaluating technological property of bolt installation |
| CN105115652A (en) * | 2015-07-09 | 2015-12-02 | 西北工业大学 | Method for quantified monitoring bolt pre-tightening torque through active ultrasonic guided wave |
| CN105157886A (en) * | 2015-09-07 | 2015-12-16 | 无锡市曙光高强度紧固件有限公司 | Measuring instrument of bolt torque stress |
| CN105258836A (en) * | 2015-10-27 | 2016-01-20 | 中国铁道科学研究院铁道建筑研究所 | System and method for monitoring state of bolt |
| CN105424258A (en) * | 2015-11-06 | 2016-03-23 | 上海交通大学 | Method and system for on-line detection of pretightening force of fastening device |
| CN105424258B (en) * | 2015-11-06 | 2018-04-17 | 上海交通大学 | Fastener pretightning force online test method and system |
| CN105509953A (en) * | 2016-02-01 | 2016-04-20 | 苏州长菱测试技术有限公司 | Test method and device for screw stress under dynamic state |
| CN105699065A (en) * | 2016-03-07 | 2016-06-22 | 安庆市星博特电子科技有限公司 | Connection tightness detection apparatus for flexible rubber joint |
| CN105893709B (en) * | 2016-04-29 | 2018-11-06 | 天津大学 | A kind of assay optimization method of NC machine tool feed system ball-screw pretightning force |
| CN105893709A (en) * | 2016-04-29 | 2016-08-24 | 天津大学 | Test optimization method for pre-tightening force of ball screw of feeding system of numerical control machine tool |
| CN105865688A (en) * | 2016-05-13 | 2016-08-17 | 中交公路规划设计院有限公司 | Tensioning instrument for screw detection and application thereof |
| CN109477765A (en) * | 2016-06-30 | 2019-03-15 | 株式会社华尔卡 | Device is practiced in fastening, method is practiced in fastening, program is practiced in fastening and fastening practice system |
| CN106092423A (en) * | 2016-07-13 | 2016-11-09 | 浙江华电器材检测研究所 | A kind of fastener shaft power on-line monitoring system |
| CN106289694A (en) * | 2016-09-14 | 2017-01-04 | 中国电力科学研究院 | Electric power pylon screw retention performance estimating method and device |
| CN107014527A (en) * | 2017-04-06 | 2017-08-04 | 武汉凡谷电子技术股份有限公司 | Microwave communication filter package tightening state monitoring method |
| CN107192482A (en) * | 2017-06-21 | 2017-09-22 | 国家电网公司 | Pump-storage generator closure stud load-bearing monitor device and method |
| CN108019400A (en) * | 2017-10-30 | 2018-05-11 | 江阴市恒润环锻有限公司 | A kind of flange and manufacture method with anti-skid bulge type packing ring and pressure sensor |
| CN108019400B (en) * | 2017-10-30 | 2023-10-20 | 江阴市恒润环锻有限公司 | Flange with anti-slip convex gasket and pressure sensor and manufacturing method |
| CN108332897B (en) * | 2017-12-04 | 2020-12-29 | 中国飞机强度研究所 | Test device for detecting high-temperature change of bolt pretightening force |
| CN108332897A (en) * | 2017-12-04 | 2018-07-27 | 中国飞机强度研究所 | A kind of experimental rig of detection bolt pretightening high temperature variation |
| CN108204876A (en) * | 2017-12-25 | 2018-06-26 | 烟台大学 | Pretightning force real-time detection apparatus and method during a kind of bolts assemblies |
| CN108709724A (en) * | 2018-04-13 | 2018-10-26 | 山东中车风电有限公司 | Wind power generating set bolt on-line condition monitoring system and method |
| CN108387468A (en) * | 2018-04-24 | 2018-08-10 | 桂林航天工业学院 | A kind of NiTi memorial alloys bolt connection part is from loose experimental rig and method |
| CN109556783A (en) * | 2018-10-16 | 2019-04-02 | 上海无线电设备研究所 | A kind of electronic equipment screw-driving torque coefficient measurement method and system |
| CN109974920A (en) * | 2019-04-12 | 2019-07-05 | 哈尔滨电机厂有限责任公司 | A kind of bolt fastener stress dynamic monitoring method |
| CN112824846A (en) * | 2019-11-21 | 2021-05-21 | 哈尔滨工业大学 | Calibration device and calibration method for bolt stress of large-scale high-speed rotation equipment |
| CN111413083A (en) * | 2020-04-27 | 2020-07-14 | 大连理工大学 | Electromechanical impedance-based flange bolt looseness detection method |
| CN111413083B (en) * | 2020-04-27 | 2021-05-07 | 大连理工大学 | Electromechanical impedance-based flange bolt looseness detection method |
| CN112816190A (en) * | 2020-12-01 | 2021-05-18 | 同济大学 | Bolt monitoring system based on double-opening resonant ring patch antenna detection |
| CN112816190B (en) * | 2020-12-01 | 2022-01-11 | 同济大学 | Bolt monitoring system based on double-opening resonant ring patch antenna detection |
| CN112873103A (en) * | 2021-01-05 | 2021-06-01 | 航天科工空间工程发展有限公司 | Method and system for assembling satellite deck and satellite main body frame and adjusting device |
| CN112924073A (en) * | 2021-01-29 | 2021-06-08 | 同济大学 | Strain type bolt pretightening force gasket sensor based on cantilever structure increase deformation |
| CN114623956A (en) * | 2022-02-24 | 2022-06-14 | 武汉大学 | Ultrasonic measurement method for random transverse load and acting direction of bolt |
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Effective date of registration: 20161212 Address after: 014030 Baotou rare earth hi tech Industrial Development Zone, the first functional area of the Inner Mongolia Autonomous Region Patentee after: Baotou Beifang Venture Co., Ltd. Patentee after: BEIJING INSTITUTE OF TECHNOLOGY Address before: 014032 Baotou, Castle Peak District, the Inner Mongolia Autonomous Region, No. two mailbox Patentee before: Inner Mongolia First Machinery Group Corporation Patentee before: BEIJING INSTITUTE OF TECHNOLOGY |