CN104972423A - Bolt screwing detection method, device and system and hydraulic wrench - Google Patents
Bolt screwing detection method, device and system and hydraulic wrench Download PDFInfo
- Publication number
- CN104972423A CN104972423A CN201510351946.7A CN201510351946A CN104972423A CN 104972423 A CN104972423 A CN 104972423A CN 201510351946 A CN201510351946 A CN 201510351946A CN 104972423 A CN104972423 A CN 104972423A
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- China
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- pressure
- bolted
- time
- status data
- hydraulic spanner
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a bolt screwing detection method, device and system and a hydraulic wrench. The bolt screwing detection method comprises the steps that the status data that the pressure of the hydraulic wrench changes along with time are acquired in the bolt screwing process; and whether bolt screwing is qualified or not is determined according to the status data that the pressure changes along with the time. According to the bolt screwing detection method, device and system and the hydraulic wrench, whether bolt screwing is qualified or not is determined according to the acquired status data that the pressure of the hydraulic wrench changes along with the time in the bolt screwing process; bolt screwing detection can be achieved without quality testing personnel for monitoring the whole bolt screwing process; manpower cost and management cost are lowered.
Description
Technical field
The present invention relates to field of mechanical technique, particularly relate to a kind of bolted detection method, device, system and hydraulic spanner.
Background technology
At present, during big machinery (such as wind power generating set) is installed at the scene, the installation of each large parts is formed by the high strength exploitation of a large amount of different size.Producer provides Installation Technology guidance, high-strength bolt construction technology and technical requirement, uses the fastening high-strength bolt of hydraulic spanner by installation unit operating personnel according to high-strength bolt construction technology and technical requirement.
Fig. 1 is existing hydraulic spanner structural representation.As shown in Figure 1, hydraulic pump 11 is provided with mechanical pointer Pressure gauge 12, for detecting the force value in oil pipe 13, thus the moment values of indirect detection hydraulic spanner head 14.Hydraulic pump 11 drives hydraulic spanner head 14 fastening bolt 15 by oil pipe 13.But in work progress, the technique that installation unit does not often specify according to producer due to Equipment or operator quality problem and technical requirement fastening bolt, usually there is following problem: 1, mechanical pointer Pressure gauge, resolution ratio is low, response speed is slow, precision is low; 2, the technological requirement that operating personnel do not specify in strict accordance with producer is carried out fastening at twice or three times to bolt, but the number of times being less than technological requirement carries out fastening to bolt; 3, operating personnel are not in strict accordance with the moment values fastening bolt that producer requires, exist and owe to twist or super stubborn problem.When bolted and maintenance, whether qualifiedly generally detect bolted by process sampling observation and final examination mode, and the problems referred to above especially super stubborn the and bolted number of times problem of bolt in process sampling observation with when finally checking and accepting, cannot detect or be inconvenient to detect.
In prior art, for ensureing the construction quality of bolted, usually needing the fastener cycle being equipped with quality inspection personnel whole process supervision bolt, adding human cost and management cost.
Summary of the invention
Embodiments of the invention provide a kind of bolted detection method, device, system and hydraulic spanner, and the fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The invention provides a kind of bolted detection method, comprising:
Obtain the time dependent status data of pressure of hydraulic spanner in bolted process;
Whether qualified according to described pressure time dependent status data determination bolted.
The present invention also provides a kind of bolted checkout gear, comprising:
Acquisition module, the time dependent status data of the pressure for obtaining hydraulic spanner in bolted process;
Whether determination module, for qualified according to described pressure time dependent status data determination bolted.
The present invention also provides a kind of hydraulic spanner, comprises hydraulic pump, mechanical pointer Pressure gauge, oil pipe, hydraulic spanner head and manograph, wherein:
Described hydraulic pump is connected with described hydraulic spanner head by described oil pipe, and described mechanical pointer Pressure gauge is connected with described hydraulic pump, and described manograph is connected with the oil-out of described hydraulic pump and described oil pipe respectively;
Described manograph, the time dependent status data of the pressure for gathering hydraulic spanner described in bolted process.
The present invention also provides a kind of bolted detection system, comprises bolted checkout gear as above and hydraulic spanner as above, wherein:
Acquisition module in described bolted checkout gear is connected with the manograph in described hydraulic spanner;
Described acquisition module obtains the time dependent status data of pressure of the described hydraulic spanner that manograph gathers described in bolted process.
Bolted detection method provided by the invention, device, system and hydraulic spanner, whether qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Accompanying drawing explanation
Fig. 1 is existing hydraulic spanner structural representation;
Fig. 2 is the schematic flow sheet of a bolted detection method provided by the invention embodiment;
Fig. 3 is the schematic flow sheet of another embodiment of bolted detection method provided by the invention;
Fig. 4 is the structural representation of a bolted checkout gear provided by the invention embodiment;
Fig. 5 is the structural representation of another embodiment of bolted checkout gear provided by the invention;
Fig. 6 is the structural representation of a hydraulic spanner provided by the invention embodiment;
Fig. 7 is the structural representation of a bolted detection system provided by the invention embodiment;
Wherein: 11-hydraulic pump; 12-mechanical pointer Pressure gauge; 13-oil pipe; 14-hydraulic spanner head; 15-bolt; 41-acquisition module; 42-determination module; 51-generates submodule; 52-determines submodule; 61-manograph; 62-oil-out; 63-threeway oil connection; 71-bolted checkout gear; 72-hydraulic spanner.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present invention bolted detection method, device, system and hydraulic spanner are described in detail.
Embodiment one
Fig. 2 is the schematic flow sheet of a bolted detection method provided by the invention embodiment.As shown in Figure 2, the bolted detection method of the present embodiment specifically can comprise:
S201, obtains the time dependent status data of pressure of hydraulic spanner in bolted process.
Concrete, the time dependent status data of pressure of hydraulic spanner in bolted process can be obtained by the manograph in hydraulic spanner.
Whether S202 is qualified according to pressure time dependent status data determination bolted.
Concrete, can according to the maximum pressure value in pressure increase decline number of times in pressure time dependent state data acquisition bolted process and each ascending and descending process, and with bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value compare.If consistent, then determine that bolted is qualified, if inconsistent, then determine that bolted is defective.
The bolted detection method of the present embodiment, whether qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Embodiment two
Fig. 3 is the schematic flow sheet of another embodiment of bolted detection method provided by the invention.As shown in Figure 3, the bolted detection method of the present embodiment gives a kind of specific implementation of bolted detection method embodiment illustrated in fig. 2.The bolted detection method of the present embodiment specifically can comprise:
S301, obtains the time dependent status data of pressure of hydraulic spanner in bolted process.
Concrete, identical with the step S201 in embodiment illustrated in fig. 2.The time dependent status data of pressure of hydraulic spanner in bolted process can be obtained by the manograph in hydraulic spanner.
Step S201 in embodiment illustrated in fig. 2 specifically can comprise the following steps S302 and S302.
S302, generates pressure time curve or pressure delta data list in time according to the time dependent status data of pressure.
Concrete, statistical product and service solution (Statistical Product andService Solutions can be adopted, be called for short SPSS), statistical analysis software (Statistical Analysis System, be called for short SAS) or the DAS such as MS Office Applications (Microsoft Excel), generate pressure time curve or pressure delta data list in time according to the time dependent status data of pressure.
S303, according to pressure time curve or pressure delta data list in time determination bolted whether qualified.
Concrete, the maximum pressure value in pressure increase decline number of times and each ascending and descending process is obtained according to the pressure time curve generated or pressure delta data list in time, and with bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value compare, whether qualified according to comparative result determination bolted.If consistent, then determine that bolted is qualified, if inconsistent, then determine that bolted is defective.
Wherein, bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value can be obtained by following two kinds of modes:
As the first embodiments possible, if bolt normal fastening time pressure change calibration curve or pressure in time to change normal data list in time known, then can directly according to bolt normal fastening time pressure change in time calibration curve or pressure change in time normal data list obtain bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value.
As the second embodiments possible, if bolt normal fastening time pressure change calibration curve or pressure in time to change normal data list in time unknown, the bolt that then can provide according to bolt manufacturer normal fastening time moment rise and fall standard number and each moment ascending and descending process in standard maximum moment value, by the moment table of comparisons inquiring about hydraulic spanner obtain corresponding bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value.
The bolted detection method of the present embodiment, the time dependent status data of pressure according to hydraulic spanner in the bolted process obtained generates pressure time curve or pressure delta data list in time, and according to generate pressure time curve or pressure delta data list in time determination bolted whether qualified, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Embodiment three
Fig. 4 is the structural representation of a bolted checkout gear provided by the invention embodiment.As shown in Figure 4, the bolted checkout gear of the present embodiment can perform above-mentioned bolted detection method embodiment illustrated in fig. 2.Concrete, the bolted checkout gear of the present embodiment specifically can comprise: acquisition module 41 and determination module 42.Wherein:
Acquisition module 41, the time dependent status data of the pressure for obtaining hydraulic spanner in bolted process.
Whether determination module 42, for qualified according to pressure time dependent status data determination bolted.
Concrete, in the present embodiment each module realize the detailed process of its function can associated description in embodiment shown in Figure 2, repeat no more herein.
The bolted checkout gear of the present embodiment, whether qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Embodiment four
Fig. 5 is the structural representation of another embodiment of bolted checkout gear provided by the invention.As shown in Figure 5, the bolted checkout gear of the present embodiment gives a kind of concrete structure of bolted checkout gear embodiment illustrated in fig. 4, and the bolted checkout gear of the present embodiment can perform above-mentioned bolted detection method embodiment illustrated in fig. 3.Concrete:
Acquisition module 41 in embodiment illustrated in fig. 4 specifically may be used for:
The time dependent status data of pressure of hydraulic spanner in bolted process is obtained by the manograph in hydraulic spanner.
Further, the determination module 42 in embodiment illustrated in fig. 4 specifically can comprise: generate submodule 51 and determine submodule 52.Wherein:
Generate submodule 51, for generating pressure time curve or pressure delta data list in time according to the time dependent status data of pressure.
Determine submodule 52, for according to pressure time curve or pressure delta data list in time determination bolted whether qualified.
Further, generate submodule 51 specifically to may be used for:
SPSS, SAS or Microsoft Excel is adopted to generate pressure time curve or pressure delta data list in time according to the time dependent status data of pressure.
Further, determine that submodule 52 specifically can comprise: the first acquiring unit, comparing unit and determining unit.Wherein:
First acquiring unit, for obtaining the maximum pressure value in pressure increase decline number of times and each ascending and descending process according to pressure time curve or pressure delta data list in time.
Comparing unit, for the maximum pressure value that pressure increase declined in number of times and each ascending and descending process respectively with bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value compare.
Whether determining unit, for qualified according to comparative result determination bolted.
Further, determine that submodule 52 can also comprise: second acquisition unit.
Second acquisition unit, for according to bolt normal fastening time pressure change calibration curve or pressure in time and change normal data list in time and obtain standard maximum pressure value in pressure increase decline standard number and each pressure increase decline process.
Further, determine that submodule 52 can also comprise: the 3rd acquiring unit.
3rd acquiring unit, for according to bolt normal fastening time moment rise and fall standard number and each moment ascending and descending process in standard maximum moment value, obtained the standard maximum pressure value in pressure increase decline standard number and each pressure increase decline process by the moment table of comparisons inquiring about hydraulic spanner.
Concrete, each module in the present embodiment, submodule, unit realize the detailed process of its function can associated description in embodiment shown in Figure 3, repeats no more herein.
The bolted checkout gear of the present embodiment, the time dependent status data of pressure according to hydraulic spanner in the bolted process obtained generates pressure time curve or pressure delta data list in time, and according to generate pressure time curve or pressure delta data list in time determination bolted whether qualified, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Embodiment five
Fig. 6 is the structural representation of a hydraulic spanner provided by the invention embodiment.As shown in Figure 6, the hydraulic spanner of the present embodiment adds manograph 61 on the basis of existing hydraulic spanner (see Fig. 1).Concrete, the hydraulic spanner of the present embodiment specifically can comprise: hydraulic pump 11, mechanical pointer Pressure gauge 12, oil pipe 13, hydraulic spanner head 14 and manograph 61, wherein:
Hydraulic pump 11 is connected with hydraulic spanner head 14 by oil pipe 13, and mechanical pointer Pressure gauge 12 is connected with hydraulic pump 11, and manograph 61 is connected with the oil-out 62 of hydraulic pump 11 and oil pipe 13 respectively.
Manograph 61, the time dependent status data of the pressure for gathering hydraulic spanner.
Concrete, manograph 61 can be connected with the oil-out 62 of hydraulic pump 11 and oil pipe 13 respectively by threeway oil connection 63.Mechanical pointer Pressure gauge 12 resolution ratio is low, response speed is slow, precision is low.And manograph 61 resolution ratio is high, fast response time, precision are high, and there is electronic digital display function, instantaneous pressure value can be shown in real time.Hydraulic pump 11 drives hydraulic spanner head 14 fastening bolt 15 by oil pipe 13, and manograph 61 can gather and store the time dependent status data of pressure of hydraulic spanner in bolted process.Whether the pressure time dependent status data determination bolted of hydraulic spanner that testing staff can gather according to manograph 61 qualified, detailed process can see Fig. 2 or embodiment illustrated in fig. 3 in related content, repeat no more herein.
Manograph in the hydraulic spanner of the present embodiment can gather the time dependent status data of pressure of hydraulic spanner in bolted process, whether qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained for testing staff, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Embodiment six
Fig. 7 is the structural representation of a bolted detection system provided by the invention embodiment.As shown in Figure 7, the bolted detection system of the present embodiment comprises the hydraulic spanner 72 as above-mentioned Fig. 4 or bolted checkout gear 71 embodiment illustrated in fig. 5 and embodiment as shown in Figure 6 above.Wherein:
Acquisition module 41 in bolted checkout gear 71 is connected with the manograph 61 in hydraulic spanner 72.
Acquisition module 41 obtains the time dependent status data of pressure of the hydraulic spanner that manograph 61 gathers in bolted process.
Concrete, the manograph 61 in hydraulic spanner 72 can gather and store the time dependent status data of pressure of hydraulic spanner in bolted process.Acquisition module 41 in bolted checkout gear 71 obtains the time dependent status data of pressure of hydraulic spanner bolted process from manograph 61.Whether bolted checkout gear 71 qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained, detailed process can see Fig. 2 or embodiment illustrated in fig. 3 in related content, repeat no more herein.
The bolted detection system of the present embodiment, gathers the time dependent status data of pressure of hydraulic spanner in bolted process by the manograph in hydraulic spanner.Bolted checkout gear obtains the time dependent status data of pressure of hydraulic spanner bolted process from manograph, and it is whether qualified according to the pressure time dependent status data determination bolted of hydraulic spanner in the bolted process obtained, fastener cycle without the need to being equipped with quality inspection personnel whole process supervision bolt can realize the detection to bolted, reduces human cost and management cost.
Above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (18)
1. a bolted detection method, is characterized in that, comprising:
Obtain the time dependent status data of pressure of hydraulic spanner in bolted process;
Whether qualified according to described pressure time dependent status data determination bolted.
2. bolted detection method according to claim 1, is characterized in that, in described acquisition bolted process, the time dependent status data of pressure of hydraulic spanner comprises:
The time dependent status data of described pressure of hydraulic spanner described in bolted process is obtained by the manograph in described hydraulic spanner.
3. bolted detection method according to claim 1, is characterized in that, describedly comprises according to whether described pressure time dependent status data determination bolted is qualified:
Pressure time curve or pressure delta data list is in time generated according to the time dependent status data of described pressure;
According to described pressure time curve or described pressure delta data list in time determination bolted whether qualified.
4. bolted detection method according to claim 3, is characterized in that, describedly generates pressure time curve according to the time dependent status data of described pressure or pressure delta data list in time comprises:
Statistical product and service solution SPSS, statistical analysis software SAS or MS Office Applications MicrosoftExcel is adopted to generate described pressure time curve or the delta data list in time of described pressure according to the time dependent status data of described pressure.
5. bolted detection method according to claim 3, is characterized in that, described according to described pressure time curve or whether described pressure delta data list in time determination bolted is qualified comprises:
The maximum pressure value in pressure increase decline number of times and each ascending and descending process is obtained according to described pressure time curve or the delta data list in time of described pressure;
By the maximum pressure value in described pressure increase decline number of times and described each ascending and descending process respectively with bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value compare;
Whether qualified according to comparative result determination bolted.
6. bolted detection method according to claim 5, is characterized in that, described according to described pressure time curve or whether described pressure delta data list in time determination bolted is qualified also comprises:
According to bolt normal fastening time pressure change calibration curve or pressure in time and change normal data list in time and obtain standard maximum pressure value in described pressure increase decline standard number and described each pressure increase decline process.
7. bolted detection method according to claim 5, is characterized in that, described according to described pressure time curve or whether described pressure delta data list in time determination bolted is qualified also comprises:
According to bolt normal fastening time moment rise and fall standard number and each moment ascending and descending process in standard maximum moment value, obtain the standard maximum pressure value in described pressure increase decline standard number and described each pressure increase decline process by the moment table of comparisons inquiring about described hydraulic spanner.
8. a bolted checkout gear, is characterized in that, comprising:
Acquisition module, the time dependent status data of the pressure for obtaining hydraulic spanner in bolted process;
Whether determination module, for qualified according to described pressure time dependent status data determination bolted.
9. bolted checkout gear according to claim 8, is characterized in that, described acquisition module specifically for:
The time dependent status data of described pressure of hydraulic spanner described in bolted process is obtained by the manograph in described hydraulic spanner.
10. bolted checkout gear according to claim 8, is characterized in that, described determination module comprises:
Generate submodule, for generating pressure time curve or pressure delta data list in time according to the time dependent status data of described pressure;
Determine submodule, for according to described pressure time curve or described pressure delta data list in time determination bolted whether qualified.
11. bolted checkout gears according to claim 10, is characterized in that, described generation submodule specifically for:
SPSS, SAS or MicrosoftExcel is adopted to generate described pressure time curve or the delta data list in time of described pressure according to the time dependent status data of described pressure.
12. bolted checkout gears according to claim 10, is characterized in that, describedly determine that submodule comprises:
First acquiring unit, for obtaining the maximum pressure value in pressure increase decline number of times and each ascending and descending process according to described pressure time curve or the delta data list in time of described pressure;
Comparing unit, for by the maximum pressure value in described pressure increase decline number of times and described each ascending and descending process respectively with bolt normal fastening time pressure increase decline standard number and each pressure increase decline process in standard maximum pressure value compare;
Whether determining unit, for qualified according to comparative result determination bolted.
13. bolted checkout gears according to claim 12, is characterized in that, describedly determine that submodule also comprises:
Second acquisition unit, for according to bolt normal fastening time pressure change calibration curve or pressure in time and change normal data list in time and obtain standard maximum pressure value in described pressure increase decline standard number and described each pressure increase decline process.
14. bolted checkout gears according to claim 12, is characterized in that, describedly determine that submodule also comprises:
3rd acquiring unit, for according to bolt normal fastening time moment rise and fall standard number and each moment ascending and descending process in standard maximum moment value, obtain the standard maximum pressure value in described pressure increase decline standard number and described each pressure increase decline process by the moment table of comparisons inquiring about described hydraulic spanner.
15. 1 kinds of hydraulic spanners, is characterized in that, comprise hydraulic pump, mechanical pointer Pressure gauge, oil pipe, hydraulic spanner head and manograph, wherein:
Described hydraulic pump is connected with described hydraulic spanner head by described oil pipe, and described mechanical pointer Pressure gauge is connected with described hydraulic pump, and described manograph is connected with the oil-out of described hydraulic pump and described oil pipe respectively;
Described manograph, the time dependent status data of the pressure for gathering hydraulic spanner described in bolted process.
16. hydraulic spanners according to claim 15, is characterized in that, described manograph also for:
Store the time dependent status data of described pressure of the described hydraulic spanner of described collection.
17. hydraulic spanners according to claim 15 or 16, is characterized in that, described manograph is connected with the described oil-out of described hydraulic pump and described oil pipe respectively by threeway oil connection.
18. 1 kinds of bolted detection systems, is characterized in that, comprise the bolted checkout gear as described in any one of claim 8-14 and the hydraulic spanner as described in any one of claim 15-17, wherein:
Acquisition module in described bolted checkout gear is connected with the manograph in described hydraulic spanner;
Described acquisition module obtains the time dependent status data of pressure of the described hydraulic spanner that manograph gathers described in bolted process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351946.7A CN104972423B (en) | 2015-06-23 | 2015-06-23 | Bolt screwing detection method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351946.7A CN104972423B (en) | 2015-06-23 | 2015-06-23 | Bolt screwing detection method, device and system |
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| Publication Number | Publication Date |
|---|---|
| CN104972423A true CN104972423A (en) | 2015-10-14 |
| CN104972423B CN104972423B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510351946.7A Active CN104972423B (en) | 2015-06-23 | 2015-06-23 | Bolt screwing detection method, device and system |
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| CN (1) | CN104972423B (en) |
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| CN107363523A (en) * | 2017-07-31 | 2017-11-21 | 杭州矢卓科技有限公司 | A kind of bolt fastening maintenance system and method |
| CN108068044A (en) * | 2017-11-07 | 2018-05-25 | 武汉科技大学 | A kind of allen wrench |
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| CN102139477A (en) * | 2010-02-01 | 2011-08-03 | 有限会社井出计器 | Screw tightening diagnostic device and electric driver |
| CN102581804A (en) * | 2012-02-07 | 2012-07-18 | 胡井湖 | Special high-precision intelligent pump for hydraulic torque wrench and method for controlling hydraulic torque wrench |
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| JP2006312210A (en) * | 2005-05-09 | 2006-11-16 | Uryu Seisaku Ltd | Managing device of screw fastening operation in torque control wrench |
| JP2011051090A (en) * | 2009-08-31 | 2011-03-17 | Hohmann Frank | Hydraulic thread bolt fastening device, and method for fastening large-sized screw using hydraulic thread bolt fastening device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107363523A (en) * | 2017-07-31 | 2017-11-21 | 杭州矢卓科技有限公司 | A kind of bolt fastening maintenance system and method |
| CN107363523B (en) * | 2017-07-31 | 2019-06-14 | 杭州森钛科技有限公司 | A kind of bolt fastening maintenance system and method |
| CN108068044A (en) * | 2017-11-07 | 2018-05-25 | 武汉科技大学 | A kind of allen wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104972423B (en) | 2017-04-19 |
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