CN108274227B - Automatic tightening device for bolt connecting member and working method thereof - Google Patents
Automatic tightening device for bolt connecting member and working method thereof Download PDFInfo
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- CN108274227B CN108274227B CN201810177486.4A CN201810177486A CN108274227B CN 108274227 B CN108274227 B CN 108274227B CN 201810177486 A CN201810177486 A CN 201810177486A CN 108274227 B CN108274227 B CN 108274227B
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- 230000009471 action Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 description 27
- 230000010354 integration Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/065—Arrangements for torque limiters or torque indicators in screw or nut setting machines
- B23P19/066—Arrangements for torque limiters or torque indicators in screw or nut setting machines by electrical means
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses an automatic tightening device for a bolt connecting member and a working method thereof, wherein the automatic tightening device for the bolt connecting member comprises a signal analysis processing module, a nut fixing plate, a bolt screwing device, a strain acquisition shifting piece and a strain signal collecting device, the bolt screwing device comprises a bolt fixing piece for fixing the head of a bolt, a rotary driving device and a variable-voltage power supply device, the rotary driving device is connected with the bolt fixing piece, and the variable-voltage power supply device is connected with the rotary driving device; the strain acquisition shifting sheet is in contact fit with the bolt fixing piece; the signal output end of the strain signal collecting device is connected with the signal input end of the signal analysis processing module, and the signal output end of the signal analysis processing module is connected with the signal input end of the voltage transformation power supply device. The automatic loosening and tightening device for the bolt connecting member can ensure the consistency of the tightness of each bolt on the basis of saving manpower, and also improves the safety of engineering.
Description
Technical Field
The invention relates to an automatic loosening and tightening device for a bolt connecting member and a working method thereof, belonging to the field of mechanical tools.
Background
At present, the bolt connection has wide application in various projects, for example, in steel structure connection, the bolt connection is inferior to the weld joint, and in actual life, the bolt connection plays an irreplaceable role. Because both the bolt connection and the stud connection are required to be composed of the bolt and the nut which are detachable and independent parts, one end of the bolt connection and the stud connection needs to be fixed and the other end of the bolt connection can be loosened when the bolt connection and the stud connection are used, and the characteristics of time and labor consumption of a large number of projects adopting the bolt connection are caused. Meanwhile, the bolt connection in engineering and actual life is completed through manual tightness, so that the tightness of each bolt cannot be guaranteed to be consistent, and the rigidity of an engineering structure is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an automatic loosening and tightening device for a bolt connecting member and a working method thereof, wherein the automatic loosening and tightening device for the bolt connecting member can ensure consistency of loosening degree of each bolt on the basis of saving manpower, and also improves engineering safety.
In order to solve the technical problems, the technical scheme of the invention is as follows: an automatic tightening device for a bolting member including a bolt and a nut screwed onto the bolt, comprising:
a signal analysis processing module;
a nut fixing plate for fixing the nut;
the bolt screwing device comprises a bolt fixing piece for fixing the head part of the bolt, a rotary driving device and a variable-voltage power supply device, wherein the rotary driving device is connected with the bolt fixing piece so as to drive the bolt fixing piece to rotate, and the variable-voltage power supply device is connected with the rotary driving device so as to adjust the torque value of the rotary driving device to the output of the bolt fixing piece through the variable-voltage power supply device;
the strain collection shifting sheet is in contact fit with the bolt fixing piece, so that the strain collection shifting sheet is shifted through the bolt fixing piece when the bolt fixing piece rotates;
the strain signal collecting device is connected with the strain collecting shifting sheet and used for collecting strain signals of the strain collecting shifting sheet, a signal output end of the strain signal collecting device is connected with a signal input end of the signal analysis processing module, and a signal output end of the signal analysis processing module is connected with a signal input end of the voltage transformation power supply device, so that the signal analysis processing module controls the work of the voltage transformation power supply device according to the strain signals fed back by the strain signal collecting device.
Further, a bolt hole is formed in the middle of the bolt fixing piece, and the bolt is fixed through the cooperation of the bolt hole and the bolt.
Further, the nut fixing plate is provided with a fixing hole, and the nut fixing plate fixes the nut through the cooperation of the fixing hole and the nut.
The rotary driving device is a motor, and the output end of the variable-voltage power supply device is connected with the input end of the motor.
Further in order to save effort, be provided with a plurality of gear grooves in the circumference of bolt fastener, the motor passes through the gear train and is connected with bolt fastener transmission, the primary gear of gear train is connected on the output shaft of motor, bolt fastener meshes with the final gear of gear train, strain collection plectrum and gear groove contact cooperation.
The utility model provides a specific structure of transformation power supply unit, transformation power supply unit includes chargeable power supply and transformer, but transformer and chargeable power supply link to each other, rotary drive device links to each other with the output of transformer, the signal input part of transformer is connected with the signal output part of signal analysis processing module.
Further in order to improve the integration level and play a protective role on each component, the automatic tightening device for the bolt connecting member further comprises a working box, and the bolt screwing device, the signal analysis processing module, the strain acquisition shifting sheet and the strain information collecting device are all installed in the working box.
Further in order to facilitate the mounting and dismounting of the automatic tightening device for the bolt connecting member on the object to be connected, the automatic tightening device for the bolt connecting member further comprises a work frame arranged along the axial direction of the bolt, the work box is connected to the work frame, and the nut fixing plate is slidingly matched on the work frame.
The invention also provides a working method of the automatic tightening device for the bolt connecting component, which comprises the following steps:
(1) Fixing the nut on the nut fixing plate, and fixing the bolt on the bolt fixing piece;
(2) In the process that the rotary driving device drives the bolt fixing piece to rotate so as to screw the bolt, the rotary driving device continuously increases the torque value output by the rotary driving device to the bolt fixing piece under the action of the variable-voltage power supply device, meanwhile, the strain signal collecting device collects the strain signal of the strain collecting pulling piece constantly and feeds the strain signal back to the signal analysis processing module so as to judge whether the strain collecting pulling piece is in a static state or a stirring state, and when the strain collecting pulling piece is in the static state, the signal analysis processing module sends a stirring stopping signal to the variable-voltage power supply device, at the moment, the output torque value of the rotary driving device to the bolt fixing piece is continuously increased, and constant torque output is carried out by the final torque value after a set time length until the bolt is screwed; in the process that the rotary driving device drives the bolt fixing piece to rotate so as to loosen the bolt, the rotary driving device continuously increases the torque value output by the rotary driving device to the bolt fixing piece under the action of the variable voltage power supply device, meanwhile, the strain signal collecting device collects the strain signal of the strain collecting shifting piece constantly and feeds the strain signal back to the signal analysis processing module so as to judge whether the strain collecting shifting piece is in a static state or a stirring state, and when the strain collecting shifting piece is in the stirring state, the signal analysis processing module sends a stirring signal to the variable voltage power supply device, and at the moment, the rotary driving device uses the torque value when the variable voltage power supply device receives the stirring signal to perform constant torque output until the nut is separated from the bolt.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) The automatic tightening device for the bolt connecting member can continuously increase the torque value output by the bolt fixing member under the action of a variable-voltage power supply device, simultaneously, the strain signal collecting device collects the strain signal of the strain collecting shifting piece constantly and feeds the strain signal back to the signal analysis processing module for judging whether the strain collecting shifting piece is in a static state or a stirring state, when the strain collecting shifting piece is in the static state, the signal analysis processing module sends a stirring stopping signal to the variable-voltage power supply device, at the moment, the output torque value of the rotary driving device for the bolt fixing member is continuously increased, and the final torque value is used for constant torque output after a set period of time until the bolt is tightened, and the automatic tightening device for the bolt connecting member can adjust the set period of time after the strain collecting shifting piece stops stirring according to the actual bolt tightening degree required by engineering, so as to lengthen or shorten the output torque adding time of the variable-voltage power supply device, further change the torque value output by the rotary driving device, adjust the tightening degree of the bolt, and ensure the consistency of each bolt tightening degree;
(2) In the process that the rotary driving device drives the bolt fixing piece to rotate so as to loosen the bolt, the rotary driving device continuously increases the torque value output by the rotary driving device to the bolt fixing piece under the action of the variable-voltage power supply device, meanwhile, the strain signal collecting device collects the strain signal of the strain collecting pulling piece constantly and feeds the strain signal back to the signal analysis processing module so as to judge whether the strain collecting pulling piece is in a static state or a stirring state, when the strain collecting pulling piece is in the stirring state, the signal analysis processing module sends a stirring signal to the variable-voltage power supply device, and at the moment, the rotary driving device outputs constant torque by the torque value when the variable-voltage power supply device receives the stirring signal until the nut is separated from the bolt, so that the rotary driving device is convenient and quick;
(3) The automatic loosening and tightening device for the bolt connecting member greatly saves time and labor cost and improves working efficiency;
(4) The automatic tightening device for the bolt connecting member has the advantages of simple structure, convenient operation and low cost, and can be conveniently installed or detached by sliding the nut fixing plate.
Drawings
FIG. 1 is a schematic view of the structure of an automatic tightening device for bolting members of the present invention;
FIG. 2 is a schematic view of a bolt fastener of the present invention;
fig. 3 is a schematic block diagram of an automatic tightening device for bolting members according to the present invention.
Detailed Description
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example 1
As shown in fig. 1 to 3, an automatic tightening device for a bolting member including a bolt and a nut screwed on the bolt, comprising:
a signal analysis processing module 1;
a nut fixing plate 2 for fixing a nut;
a bolt screwing device including a bolt fixing member 4 for fixing a head portion of a bolt, a rotation driving device 10, and a variable voltage power supply device 5, the rotation driving device 10 being connected to the bolt fixing member 4 so that the rotation driving device 10 drives the bolt fixing member 4 to rotate, the variable voltage power supply device 5 being connected to the rotation driving device 10 so that a torque value of an output of the rotation driving device 10 to the bolt fixing member 4 is adjusted by the variable voltage power supply device 5;
the strain collection shifting sheet 6 is in contact fit with the bolt fixing piece 4, so that the strain collection shifting sheet 6 is shifted by the bolt fixing piece 4 when the bolt fixing piece 4 rotates;
the strain signal collecting device 7 is connected with the strain collecting pulling piece 6 and is used for collecting strain signals of the strain collecting pulling piece 6, a signal output end of the strain signal collecting device 7 is connected with a signal input end of the signal analysis processing module 1, and a signal output end of the signal analysis processing module 1 is connected with a signal input end of the variable-voltage power supply device 5, so that the signal analysis processing module 1 controls the work of the variable-voltage power supply device 5 according to the strain signals fed back by the strain signal collecting device 7. Specifically, the torque value of the output of the rotary drive device 10 to the bolt mount 4 is adjusted by adjusting the output voltage of the variable voltage power supply device 5.
As shown in fig. 1, a bolt hole 41 is provided in the middle of the bolt fixing member 4, and the bolt fixing member 4 fixes the bolt by the cooperation of the bolt hole 41 and the bolt.
As shown in fig. 2, the nut fixing plate 2 is provided with a fixing hole 3, and the nut fixing plate 2 fixes the nut by the cooperation of the fixing hole 3 and the nut.
The rotary driving device 10 is a motor, and the output end of the variable-voltage power supply device 5 is connected with the input end of the motor.
As shown in fig. 2, for saving effort, a plurality of gear grooves 42 are arranged on the circumference of the bolt fixing member 4, the motor is in transmission connection with the bolt fixing member 4 through a gear set, a primary gear of the gear set is connected to an output shaft of the motor, the bolt fixing member 4 is meshed with a final gear of the gear set, and the strain collecting shifting sheet 6 is in contact fit with the gear grooves 42.
The variable-voltage power supply device 5 comprises a chargeable power supply and a transformer, the transformer is connected with the chargeable power supply, the rotary driving device 10 is connected with the output end of the transformer, and the signal input end of the transformer is connected with the signal output end of the signal analysis processing module 1.
As shown in fig. 1, in order to improve the integration level and protect the components, the automatic tightening device for the bolt connection member further includes a working box 9, and the bolt screwing device, the signal analysis processing module 1, the strain acquisition dial 6 and the strain information collecting device are all installed in the working box 9.
As shown in fig. 1, in order to facilitate the mounting and dismounting of the automatic tightening device for the bolting means on the object to be connected, the automatic tightening device for the bolting means further comprises a work frame 8 provided along the axial direction of the bolt, the work box 9 is connected to the work frame 8, and the nut fixing plate 2 is slidably fitted to the work frame 8.
Example two
A method of operating an automatic tightening device for bolting components as claimed in embodiment one, the method comprising the steps of:
(1) Fixing the nut on the nut fixing plate 2, and fixing the bolt on the bolt fixing piece 4;
(2) In the process that the rotary driving device 10 drives the bolt fixing piece 4 to rotate so as to screw the bolt, the rotary driving device 10 continuously increases the torque value output by the rotary driving device to the bolt fixing piece 4 under the action of the variable-voltage power supply device 5, meanwhile, the strain signal collecting device 7 collects the strain signal of the strain collecting shifting piece 6 constantly and feeds the strain signal back to the signal analysis processing module 1 so as to judge whether the strain collecting shifting piece 6 is in a static state or a stirring state, when the strain collecting shifting piece 6 is in the static state, the signal analysis processing module 1 sends a stirring stopping signal to the variable-voltage power supply device 5, at the moment, the output torque value of the rotary driving device 10 to the bolt fixing piece 4 is continuously increased, and after a set time length, the final torque value is used for constant torque output until the bolt is screwed; in the process that the rotary driving device 10 drives the bolt fixing piece 4 to rotate so as to loosen the bolt, the rotary driving device 10 continuously increases the torque value output by the rotary driving device to the bolt fixing piece 4 under the action of the variable voltage power supply device 5, meanwhile, the strain signal collecting device 7 collects the strain signal of the strain collecting shifting piece 6 constantly and feeds the strain signal back to the signal analysis processing module 1 so as to judge whether the strain collecting shifting piece 6 is in a static state or a stirring state, when the strain collecting shifting piece 6 is in the stirring state, the signal analysis processing module 1 sends a stirring signal to the variable voltage power supply device 5, and at the moment, the rotary driving device 10 uses the torque value when the variable voltage power supply device 5 receives the stirring signal to make constant torque output until the nut is separated from the bolt.
The working principle of the invention is as follows:
the method comprises the steps that a nut is fixed on a nut fixing plate 2, a bolt is fixed on a bolt fixing piece 4, in the process that a rotary driving device 10 drives the bolt fixing piece 4 to rotate to screw the bolt, the rotary driving device 10 continuously increases the torque value output by the rotary driving device on the bolt fixing piece 4 under the action of a variable-voltage power supply device 5, meanwhile, a strain signal collecting device 7 collects a strain signal of a strain collecting shifting piece 6 constantly and feeds back the strain signal to a signal analysis processing module 1 so as to judge whether the strain collecting shifting piece 6 is in a static state or a stirring state, when the strain collecting shifting piece 6 is in the static state, the signal analysis processing module 1 sends a stirring stopping signal to the variable-voltage power supply device 5, at the moment, the output torque value of the rotary driving device 10 on the bolt fixing piece 4 is continuously increased, and constant torque output is carried out by the final torque value after set time, until the bolt is screwed, and according to the actual bolt tightness degree required by engineering, the automatic tightness device for a bolt connecting member can adjust the set time length after the strain collecting shifting piece 6 stops stirring, so that the set time length of the strain collecting shifting piece 6 is prolonged or shortened, when the strain collecting shifting piece 6 is in the static state or in the stirring state, the static state is in the state, the static state, the rotation of the rotation device is stopped, the torque value is stopped, the rotation value is continuously increased, the torque value is continuously, and the torque value is continuously increased, and the torque value is output after the rotation value is required is the rotation value is constant, and the rotation value is stable, and the torque value is high, and the tightness is high, and the degree is high when the tightness is high is required, and the tightness is required; in the process that the rotary driving device 10 drives the bolt fixing piece 4 to rotate so as to loosen the bolt, the rotary driving device 10 continuously increases the torque value output by the rotary driving device to the bolt fixing piece 4 under the action of the variable-voltage power supply device 5, meanwhile, the strain signal collecting device 7 collects the strain signal of the strain collecting shifting piece 6 constantly and feeds the strain signal back to the signal analysis processing module 1 so as to judge whether the strain collecting shifting piece 6 is in a static state or a stirring state, when the strain collecting shifting piece 6 is in the stirring state, the signal analysis processing module 1 sends a stirring signal to the variable-voltage power supply device 5, and at the moment, the rotary driving device 10 outputs constant torque by the torque value when the variable-voltage power supply device 5 receives the stirring signal until the nut is separated from the bolt, so that the rotary driving device is convenient and quick; the automatic loosening and tightening device for the bolt connecting member greatly saves time and labor cost and improves working efficiency; the automatic tightening device for the bolt connecting member has the advantages of simple structure, convenient operation and low cost, and can be conveniently installed or detached by sliding the nut fixing plate 2.
The technical problems, technical solutions and advantageous effects solved by the present invention have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of protection of the present invention.
Claims (9)
1. An automatic tightening device for a bolting member comprising a bolt and a nut screwed onto the bolt, characterized in that it comprises:
a signal analysis processing module (1);
a nut fixing plate (2) for fixing a nut;
the bolt screwing device comprises a bolt fixing piece (4) for fixing the head part of a bolt, a rotary driving device (10) and a variable-voltage power supply device (5), wherein the rotary driving device (10) is connected with the bolt fixing piece (4) so that the rotary driving device (10) drives the bolt fixing piece (4) to rotate, and the variable-voltage power supply device (5) is connected with the rotary driving device (10) so as to adjust the torque value of the output of the rotary driving device (10) to the bolt fixing piece (4) through the variable-voltage power supply device (5);
the strain collection shifting sheet (6) is in contact fit with the bolt fixing piece (4) so as to shift the strain collection shifting sheet (6) through the bolt fixing piece (4) when the bolt fixing piece (4) rotates;
the strain signal collecting device (7) is connected with the strain collecting shifting sheet (6) and is used for collecting strain signals of the strain collecting shifting sheet (6), a signal output end of the strain signal collecting device (7) is connected with a signal input end of the signal analysis processing module (1), and a signal output end of the signal analysis processing module (1) is connected with a signal input end of the variable-voltage power supply device (5) so that the signal analysis processing module (1) controls the work of the variable-voltage power supply device (5) according to the strain signals fed back by the strain signal collecting device (7); wherein,,
in the process that the rotary driving device (10) drives the bolt fixing piece (4) to rotate so as to tighten the bolt, the rotary driving device (10) continuously increases the torque value output by the rotary driving device to the bolt fixing piece (4) under the action of the variable-voltage power supply device (5), meanwhile, the strain signal collecting device (7) collects the strain signal of the strain collecting poking piece (6) constantly and feeds the strain signal back to the signal analysis processing module (1) so as to judge whether the strain collecting poking piece (6) is in a static state or a poking state, and when the strain collecting poking piece (6) is in the static state, the signal analysis processing module (1) sends a poking stopping signal to the variable-voltage power supply device (5), and at the moment, the output torque value of the rotary driving device (10) to the bolt fixing piece (4) is continuously increased, and after a set period, the final torque value is used for constant torque output until the bolt is tightened; in the process that the rotary driving device (10) drives the bolt fixing piece (4) to rotate so as to loosen the bolt, the rotary driving device (10) continuously increases the torque value output by the rotary driving device to the bolt fixing piece (4) under the action of the variable voltage power supply device (5), meanwhile, the strain signal collecting device (7) collects the strain signal of the strain collecting poking piece (6) constantly and feeds the strain signal back to the signal analysis processing module (1) so as to judge whether the strain collecting poking piece (6) is in a static state or a poking state, when the strain collecting poking piece (6) is in the poking state, the signal analysis processing module (1) sends poking signals to the variable voltage power supply device (5), and at the moment, the rotary driving device (10) uses the torque value when the variable voltage power supply device (5) receives the poking signals to make constant torque output until nuts are separated from the bolts.
2. The automatic tightening device for bolting members according to claim 1, wherein: the middle part of the bolt fixing piece (4) is provided with a bolt hole (41), and the bolt fixing piece (4) is used for fixing a bolt through the cooperation of the bolt hole (41) and the bolt.
3. The automatic tightening device for bolting members according to claim 1, wherein: the nut fixing plate (2) is provided with a fixing hole (3), and the nut fixing plate (2) is used for fixing the nut through the cooperation of the fixing hole (3) and the nut.
4. The automatic tightening device for bolting members according to claim 1, wherein: the rotary driving device (10) is a motor, and the output end of the variable-voltage power supply device (5) is connected with the input end of the motor.
5. The automatic tightening device for bolting members according to claim 4, wherein: the circumference of bolt mounting (4) is provided with a plurality of gear grooves (42), the motor passes through gear train and bolt mounting (4) transmission connection, the primary gear of gear train is connected on the output shaft of motor, bolt mounting (4) meshes with the final gear of gear train, strain collection plectrum (6) and gear groove (42) contact cooperation mutually.
6. The automatic tightening device for bolting members according to claim 1, wherein: the variable-voltage power supply device (5) comprises a chargeable power supply and a transformer, the transformer is connected with the chargeable power supply, the rotary driving device (10) is connected with the output end of the transformer, and the signal input end of the transformer is connected with the signal output end of the signal analysis processing module (1).
7. The automatic tightening device for bolting members according to claim 1, wherein: still include work box (9), bolt screwing device, signal analysis processing module (1), strain acquisition plectrum (6) and strain information collection device all install in work box (9).
8. The automatic tightening device for bolting members according to claim 7, wherein: the nut fixing device is characterized by further comprising a working frame (8) arranged along the axial direction of the bolt, wherein the working box (9) is connected to the working frame (8), and the nut fixing plate (2) is in sliding fit with the working frame (8).
9. A method of operating an automatic tightening device for bolted construction according to any one of claims 1 to 8, wherein the method comprises the steps of:
(1) Fixing the nut on the nut fixing plate (2), and fixing the bolt on the bolt fixing piece (4);
(2) In the process that the rotary driving device (10) drives the bolt fixing piece (4) to rotate so as to tighten the bolt, the rotary driving device (10) continuously increases the torque value output by the rotary driving device to the bolt fixing piece (4) under the action of the variable-voltage power supply device (5), meanwhile, the strain signal collecting device (7) collects the strain signal of the strain collecting poking piece (6) constantly and feeds the strain signal back to the signal analysis processing module (1) so as to judge whether the strain collecting poking piece (6) is in a static state or a poking state, and when the strain collecting poking piece (6) is in the static state, the signal analysis processing module (1) sends a poking stopping signal to the variable-voltage power supply device (5), and at the moment, the output torque value of the rotary driving device (10) to the bolt fixing piece (4) is continuously increased, and after a set period, the final torque value is used for constant torque output until the bolt is tightened; in the process that the rotary driving device (10) drives the bolt fixing piece (4) to rotate so as to loosen the bolt, the rotary driving device (10) continuously increases the torque value output by the rotary driving device to the bolt fixing piece (4) under the action of the variable voltage power supply device (5), meanwhile, the strain signal collecting device (7) collects the strain signal of the strain collecting poking piece (6) constantly and feeds the strain signal back to the signal analysis processing module (1) so as to judge whether the strain collecting poking piece (6) is in a static state or a poking state, when the strain collecting poking piece (6) is in the poking state, the signal analysis processing module (1) sends poking signals to the variable voltage power supply device (5), and at the moment, the rotary driving device (10) uses the torque value when the variable voltage power supply device (5) receives the poking signals to make constant torque output until nuts are separated from the bolts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177486.4A CN108274227B (en) | 2018-03-05 | 2018-03-05 | Automatic tightening device for bolt connecting member and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810177486.4A CN108274227B (en) | 2018-03-05 | 2018-03-05 | Automatic tightening device for bolt connecting member and working method thereof |
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| CN108274227A CN108274227A (en) | 2018-07-13 |
| CN108274227B true CN108274227B (en) | 2023-09-26 |
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| CN112268650A (en) * | 2020-10-30 | 2021-01-26 | 浙江海力股份有限公司 | Bolt assembly for high-voltage power transmission tower and anti-loosening detection method thereof |
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