CN103317477B - A kind of angle determines power bolt tightening method and fastener - Google Patents
A kind of angle determines power bolt tightening method and fastener Download PDFInfo
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- CN103317477B CN103317477B CN201310242452.6A CN201310242452A CN103317477B CN 103317477 B CN103317477 B CN 103317477B CN 201310242452 A CN201310242452 A CN 201310242452A CN 103317477 B CN103317477 B CN 103317477B
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Abstract
The present invention discloses a kind of angle and determines power bolt tightening method and fastener, and it uses bolt tension force tester and determines by marking straight line drawn by the first nut and cover panel surface the angle angle value that bolt reaches predetermined pull value tense marker straight line and formed; In bolt tightening work progress, surface is provided with the second nut of mark groove and is provided with graduation mark pad and determines initial graduation mark and final graduation mark, and be that both form the angle value recorded when angle angle value equals to test, namely bolt tightening construction completes.The present invention screws angle value according to the bolt measured in advance and tightens, make this specification/batch the degree of tightening of bolt identical and reach required value of thrust, avoid the problem that bolt turning torque value is too high or too low, and eliminate stubborn operation eventually, improve efficiency of construction, the method is particularly useful for the narrow and small situation causing using correction torque spanner of construction space, and the value of thrust of the bolt after tightening can be made to meet construction requirement equally.
Description
Technical field
The present invention relates to bolted technical field, particularly relate to a kind of angle and determine power bolt tightening method and fastener.
Background technology
In extra large work domestic at present, industry and civilian steel construction industry, carry out the fastening construction of large batch of high-strength bolt, general construction method is: depending on the size (note: moment of torsion is come by formulae discovery) of the size required torque value of bolt, use manual wrench, electronic or pneumatic impact spanner by bolt tightening (this step be called just twist), then use torque wrench (mixing up by required torque value) heavily to twist each high-strength bolt to correct for one time (this step be called twist eventually); Be exactly finally carry out inspection declaration.Such construction method often causes:
Because use manual, electronic or pneumatic impact spanner to carry out bolt tightening, you cannot know that this twists how many, are also difficult to control electronic and pneumatic impact spanner, are screwed to often inactively just to have calculated.At this moment, or bolt torque values is too high, and bolt can be made excessively stubborn, causes bolt overburden to run, and along with passage of time, bolt can be made to crack the hidden danger such as even fracture.(note: twisting eventually can only be correct the bolt not reaching moment of torsion, cannot correct the bolt of excessively twisting).Torque value is too low, can increase the workload of twisting eventually.In addition: the restricted clearance that a lot of position is narrow and small, can only tighten with manual wrench, twist the torque wrench corrected eventually and cannot put into construction at all, now the torque value of these bolts cannot ensure especially.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of angle to determine power bolt tightening method and fastener, be intended to solve in the construction of current bolt tightening that to tighten operation loaded down with trivial details, the problem of inefficiency.
Technical scheme of the present invention is as follows:
A kind of angle determines power bolt tightening method, wherein, said method comprising the steps of:
A, test bolt is fixed in the corresponding cover plate of bolt tension force tester, test bolt screws the first adaptive nut inwards, until stop when bolt tension force tester starts to occur pulling force reading screwing;
B, the first nut and cover panel surface draw one mark straight line, described mark passes straight through the central point on the first nut surface and extends to cover panel surface;
C, continue to screw the first nut, until stop when predetermined pull value appears in bolt tension force tester, measure and record the angle value of the angle that the portion markings straight line on the first nut and the portion markings straight line in cover plate are formed;
In D, bolt tightening work progress, construction bolts is inserted in the bolt hole of connector, the second nut is screwed to inner after construction bolts is inserted in pad, until stop screwing when connector surface is close to by the second nut and pad, wherein, described second nut surface is provided with a mark groove, and described mark groove, through the central point on the second nut surface, described pad is provided with the graduation mark for identifying angle value;
Initial graduation mark on the pad that E, setting-up piece recording mark groove are now corresponding, continue to screw the second nut, until when the second nut can not screw one week completely, make the final graduation mark on pad corresponding to mark groove and initial graduation mark form the angle value recorded when angle angle value equals to test, bolt tightening construction namely complete bolted.
Described angle determines power bolt tightening method, and wherein, described construction bolts is with batch same specification bolt with test bolt, and described first nut and the second nut are same batch of adaptive same specification nut.
Described angle determines power bolt tightening method, wherein, uses the dial type torque wrench of readable to continue to screw the first nut in described step C.
Described angle determines power bolt tightening method, wherein, continues to screw the first nut in described step C, until when the value of thrust needed for the appearance of bolt tension force tester stops, also comprising and reads and record torque value shown on the dial type torque wrench of readable.
Described angle determines power bolt tightening method, and wherein, the angle that the portion markings straight line on described first nut and the portion markings straight line in cover plate are formed is the acute angle or right angle angle that two parts mark that straight line formed;
Described initial graduation mark and angle that final graduation mark is formed are acute angle or right angle angle.
Described angle determines power bolt tightening method, and wherein, described pad is fixed by fixing glue.
Described angle determines power bolt tightening method, wherein, described pad is fixed by fixing handgrip, described fixing handgrip is provided with the latch for preventing pad movement, described pad is provided with the draw-in groove for latch occlusion, one end of described fixing handgrip is fixed, and the other end is fixed pad by the draw-in groove of latch occlusion pad.
Utilize angle as above to determine a fastener for power bolt tightening method, wherein, described device comprises:
Pad: described pad is provided with the graduation mark for identifying angle value;
Second nut: described second nut surface is provided with one for indicating the mark groove that it screws angle, described mark groove is through the central point on the second nut surface, and what described mark groove indicated the second nut by the different graduation marks on corresponding pad before and after screwing screws angle.
Described angle determines power bolt tightening method, and wherein, described device also comprises fixing handgrip, described fixing handgrip is provided with the latch for preventing pad movement, described pad is provided with the draw-in groove for latch occlusion.
Described angle determines power bolt tightening method, and wherein, the angle value that on described pad, adjacent graduation mark is formed is 10 °.
Beneficial effect: the invention provides a kind of angle and determine power bolt tightening method and fastener, in bolt tightening construction, screw angle value according to the bolt measured in advance to tighten, make this specification/batch the degree of tightening of bolt identical and reach required value of thrust, avoid the problem that bolt turning torque value is too high or too low, screw operation relative to conventional bolt and eliminate stubborn operation eventually, improve efficiency of construction, the method is particularly useful for the narrow and small situation causing using correction torque spanner of construction space, the value of thrust of the bolt after tightening can be made to meet construction requirement equally.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that angle of the present invention determines power bolt tightening method.
Fig. 2 is the structural representation of bolt tension force tester of the present invention.
Fig. 3 is the schematic diagram that angle of the present invention determines to draw at the first nut and cover panel surface in power bolt tightening method mark straight line.
Fig. 4 is the schematic diagram that angle of the present invention determines to continue in power bolt tightening method to screw when the first nut reaches required value of thrust.
Fig. 5 is angle of the present invention when to determine in power bolt tightening method nut construction, the structural representation of the second nut and pad.
Fig. 6 is that angle of the present invention is determined to continue to screw the second nut in power bolt tightening method and made the mark groove on the second nut and the final graduation mark on pad form the view that angle angle value equals the angle value recorded when testing.
Fig. 7 is the preferred embodiment schematic diagram that angle of the present invention determines setting-up piece in power bolt tightening method.
Detailed description of the invention
The invention provides a kind of angle and determine power bolt tightening method and fastener, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Angle as shown in Figure 1 determines power bolt tightening method, said method comprising the steps of:
S100, test bolt is fixed in the corresponding cover plate of bolt tension force tester, test bolt screws the first adaptive nut inwards, until stop when bolt tension force tester starts to occur pulling force reading screwing.
Bolt tension force tester used in the present invention (BOLT TENSION CALIBRATOR) as shown in Figure 2, the using method of this bolt tension force tester is connected on tester 100 by bolt 200 to be tested by adaptive cover plate 110, then the first nut 210 of bolt 200 correspondence is screwed into, after screwing gradually, the dial plate 120 of bolt tension force tester 100 directly can read bolt 200 to be tested value of thrust now, should be that bolt tension force tester carries out returning 0 process before aforesaid operations, even if tester pointed scale 0 position.
In test process, being generally that namely the first nut driving is stopped to being close to cover plate, for specifying the opportunity that this stopping screws more accurately, selecting to stop when bolt tension force tester starts to occur pulling force reading screwing.During concrete operations, screwing in the first nut process, during to a certain degree, the hand of dial of bolt tension force tester starts to swing, value of thrust reading starts not to be 0, now then being returned a little by the first nut to twist makes the pointer of dial plate make zero, then the position this moment residing for the first nut is the state that bolt tension force tester starts when there is reading, be also the first nut value of thrust is the critical condition of 0.
S200, the first nut and cover panel surface draw one mark straight line, described mark passes straight through the central point on the first nut surface and extends to cover panel surface.
As shown in Figure 3, after determining that the first nut 210 stops turning position by S100, along the central point of the first nut 210, test bolt 200, a mark straight line 300 is drawn at the first nut 210 and cover plate 110 surface, this mark straight line uses marking pen to draw, it is preferred that this mark straight line 300 is fixed a point by the corner of nut, such as the first nut is hex nut, then mark straight line through two pairs of symmetrical angular vertexs.Be beneficial to the determination of follow-up angle angle value like this.
S300, continue to screw the first nut, until stop when predetermined pull value appears in bolt tension force tester, measure and record the angle value of the angle that the portion markings straight line on the first nut and the portion markings straight line in cover plate are formed.
As shown in Figure 4, after finishing mark straight line, continue to screw the first nut 210, now the dial plate 120 of bolt tension force tester also starts to occur reading, until when dial reading is required value of thrust, stop screwing the first nut, mark straight line is also divided into two parts, portion markings straight line 320 on first nut screws with the first nut and rotates, portion markings straight line 310 finally and on dial plate forms angle, this angle angle value is measured and record with angle measurement equipment, this angle value is the angle angle that should be formed with the bolt testing same batch of bolt 200 same specification.It is preferred that to measure and what record is the acute angle that formed of the portion markings straight line on the first nut and the portion markings straight line in cover plate or right angle angle.In preferred embodiment, the dial type torque wrench 410 of readable is used to screw the first nut. like this after stopping screws, dial type torque wrench 410 by readable reads torque value now, has so just occurred there is a corresponding relation about testing value of thrust and the torque value of mensuration and the angle angle of mensuration reached required for bolt.
In S400, bolt tightening work progress, construction bolts is inserted in the bolt hole of connector, the second nut is screwed to inner after construction bolts is inserted in pad, until stop screwing when connector surface is close to by the second nut and pad, wherein, described second nut surface is provided with a mark groove, and described mark groove, through the central point on the second nut surface, described pad is provided with the graduation mark for identifying angle value.
As shown in Figure 5, in practice of construction process, use the second nut 610 and construction bolts 600 to carry out bolt to the connector 500 that need be connected and fixed to fix, the pad 700 used in this construction is the pad of special preparation, described pad 700 is provided with the graduation mark 710 for identifying angle value, it is preferred that described pad is circular gasket, pad center is provided with the screw passed for construction bolts, and the angle value that on pad, adjacent graduation mark is formed can be set to 10 °.Described second nut 610 surface is provided with a mark groove 611, described mark groove through the central point on the second nut surface, this mark groove be also prepare specially when nut dispatches from the factory superincumbent.In another preferred embodiment, also can prepare this mark groove specially but to the second nut wherein one jiao carry out identification process and (such as mark aperture be set in the corresponding wherein plane of a jiao of the second nut, or frosted is carried out to this angle, its glossiness is made obviously to be different from its complementary angle of the second nut), this angle can be used as pointer, the effect of mark groove can be played equally.
Wherein, described construction bolts is with batch same specification bolt with test bolt, and described first nut and the second nut are same batch of adaptive same specification nut.The value of thrust that such guarantee test phase obtains is equally applicable to construction bolts.Torque spanner due to readable is comparatively large heavier, cannot use, thus cause a lot of bolted cannot know its tightness, leave hidden danger to construction quality in the work progress of reality under having a lot of situation.So the present invention is just for solving problems.The present invention uses common wrench in bolt tightening construction, therefore can complete the determination work of the bolt tightness in particular cases such as some small spaces.
Initial graduation mark on the pad that S500, setting-up piece recording mark groove are now corresponding, continue to screw the second nut, until when the second nut can not screw one week completely, make the final graduation mark on pad corresponding to mark groove and initial graduation mark form the angle value recorded when angle angle equals to test, bolt tightening construction namely complete bolted.
Pad must be fixed and just judge by the anglec of rotation of the graduation mark on it to the second nut, therefore, practical operation Intermediate gasket is by being pasted and fixed on connector in its bottom surface coating fixing glue, also realize by device as shown in Figure 7 in addition, described pad 700 is fixed by fixing handgrip 800, described fixing handgrip 800 is provided with the latch 810 for preventing pad 700 movement, described pad 700 is provided with the draw-in groove 710 be engaged for latch 810, one end of described fixing handgrip 800 is fixed, draw-in groove 710 pairs of pads that the other end is engaged pad by latch 810 are fixed, preferably, described fixing handgrip can use ferromagnetic substance (such as magnet) to make, the connector 500 fixing due to construction bolts 600 is mostly ferrous materials, when therefore using this method to screw construction bolts, after pad 700 and the second nut 610 are all close to connector 500, the latch 810 of fixing handgrip is engaged the draw-in groove 710 of pad, fixing handgrip 800 rear end is directly incorporated into connector surface by magnetic sticker, strong magnetic force ensure that pad 700 there will not be rotation to wait displacement situation.In preferred embodiment, fixedly change hands rear end and can also make bent loose-leaf structure, to adapt to different connector planes (such as when connector surface is narrow, make rear end still can fit to attachment surface by loose-leaf bending structure and ensure the fixing of pad by ferromagnetism)
As shown in Figure 5, after the second nut 610 is screwed into construction bolts 600 and makes pad 700 be close to connector 500 surface, graduation mark on the pad that recording mark groove 611 is now corresponding is also decided to be initial graduation mark, simply can do mark this initial graduation mark.
Continue to screw the second nut 610, until when the second nut 610 can not screw one week completely, make the final graduation mark on pad corresponding to mark groove 611 and initial graduation mark form the angle value recorded when angle angle equals to test, bolt tightening construction namely complete.
In another embodiment, also pad can not be used under some execution conditions, at the second nut precession construction bolts and after being close to connector, on connector, the now corresponding position of the mark groove (or other mark) of the second nut is marked with marking pen, then continue to screw the second nut, until when the second nut can not screw one week completely, the angle value recorded when finally making position corresponding to the mark groove of the second nut equal to test with the angle angle value of position marked before, so bolted can reach required value of thrust equally, bolt tightening has been constructed.
As shown in Figure 6, after using common wrench 420 to continue to screw the second nut 610, the mark groove 611 on the second nut 610 and then rotates.When determining that the second nut 610 finally screws degree, owing to now can not determine by bolt tension force testing equipment or torque spanner, the then final degree that screws is as the criterion when can not screw one week completely with the second nut 610, now, the degree that screws of obvious second nut is close to required value of thrust, then, according to the angle angle value determined in test process before this, and the mark groove 611 on the second nut 610 is rotated to a certain position by the initial graduation mark on corresponding pad 700, the angle value that the angle angle value that the now corresponding pad high scale line (i.e. final graduation mark) of mark groove 611 and initial graduation mark are before formed measures when equaling to test.Correspond to the angle measured when measuring and choose acute angle or right angle angle, then, in work progress, initial graduation mark and angle that final graduation mark is formed also are acute angle or right angle angle.
Utilize angle as above to determine a fastener for power bolt tightening method, comprising:
Pad: described pad is provided with the graduation mark for identifying angle value;
Second nut: described second nut surface is provided with one for indicating the mark groove that it screws angle, described mark groove is through the central point on the second nut surface, and what described mark groove indicated the second nut by the different graduation marks on corresponding pad before and after screwing screws angle.
In one specific embodiment, the high-strength bolt (all using hex nut) of the DOKKA brand of being produced by Norwegian National 10.9 grades used in SEVAN DRILLER No. 3 derrick installation project constructions, determines by using the angle of invention the corresponding relation that power bolt tightening method determines value of thrust required by its each sized bolt used and torque value and angle value respectively.
M30 requires that value of thrust is 392KN=angle value 120 degree (i.e. 2 corners)=torque value 1600NM;
M27 requires that value of thrust is 322KN=angle value 120 degree (i.e. 2 corners)=torque value 1250NM;
M24 requires that value of thrust is 347KN=angle value 120 degree (i.e. 2 corners)=torque value 800NM.
Then, during to the construction of each sized bolt, can screw according to the angle value of said determination, ensure that the final value of thrust of the bolt of often kind of specification, torque value all in its scope required, and without the need to twisting operation eventually, greatly refer to efficiency of construction.
Angle provided by the invention determines power bolt tightening method and fastener, in bolt tightening construction, screw angle value according to the bolt measured in advance to tighten, make this specification/batch the degree of tightening of bolt identical and reach required value of thrust, avoid the problem that bolt turning torque value is too high or too low, screw operation relative to conventional bolt and eliminate stubborn operation eventually, improve efficiency of construction, the method is particularly useful for the narrow and small situation causing using correction torque spanner of construction space, and the value of thrust of the bolt after tightening can be made to meet construction requirement equally.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (9)
1. angle determines a power bolt tightening method, it is characterized in that, said method comprising the steps of:
A, test bolt is fixed in the corresponding cover plate of bolt tension force tester, test bolt screws the first adaptive nut inwards, until stop when bolt tension force tester starts to occur pulling force reading screwing, the first nut is in critical condition that value of thrust is 0;
B, the first nut and cover panel surface draw one mark straight line, described mark passes straight through the central point on the first nut surface and extends to cover panel surface;
C, continue to screw the first nut, until stop when predetermined pull value appears in bolt tension force tester, read and record torque value shown on the dial type torque wrench of readable; Measure and record the angle value of the angle that the portion markings straight line on the first nut and the portion markings straight line in cover plate are formed;
In D, bolt tightening work progress, construction bolts is inserted in the bolt hole of connector, the second nut is screwed to inner after construction bolts is inserted in pad, until stop screwing when connector surface is close to by the second nut and pad, wherein, described second nut surface is provided with a mark groove, and described mark groove, through the central point on the second nut surface, described pad is provided with the graduation mark for identifying angle value;
Initial graduation mark on the pad that E, setting-up piece recording mark groove are now corresponding, continue to screw the second nut, until when the second nut can not screw one week completely, make the final graduation mark on pad corresponding to mark groove and initial graduation mark form the angle value recorded when angle angle value equals to test, bolt tightening construction namely complete bolted;
Described bolt tightening method is used for the fastening construction of high-strength bolt.
2. angle according to claim 1 determines power bolt tightening method, it is characterized in that, described construction bolts is with batch same specification bolt with test bolt, and described first nut and the second nut are same batch of adaptive same specification nut.
3. angle according to claim 1 determines power bolt tightening method, it is characterized in that, uses the dial type torque wrench of readable to continue to screw the first nut in described step C.
4. angle according to claim 1 determines power bolt tightening method, it is characterized in that, the angle that the portion markings straight line on described first nut and the portion markings straight line in cover plate are formed is the acute angle or right angle angle that two parts mark that straight line formed;
Described initial graduation mark and angle that final graduation mark is formed are acute angle or right angle angle.
5. angle according to claim 1 determines power bolt tightening method, it is characterized in that, described pad is fixed by fixing glue.
6. angle according to claim 1 determines power bolt tightening method, it is characterized in that, described pad is fixed by fixing handgrip, described fixing handgrip is provided with the latch for preventing pad movement, described pad is provided with the draw-in groove for latch occlusion, one end of described fixing handgrip is fixed, and the other end is fixed pad by the draw-in groove of latch occlusion pad.
7. utilize the angle described in claim 1 to determine a fastener for power bolt tightening method, it is characterized in that, described device comprises:
Pad: described pad is provided with the graduation mark for identifying angle value;
Second nut: described second nut surface is provided with one for indicating the mark groove that it screws angle, described mark groove is through the central point on the second nut surface, and what described mark groove indicated the second nut by the different graduation marks on corresponding pad before and after screwing screws angle.
8. angle according to claim 7 determines power bolt tightening method, it is characterized in that, described device also comprises fixing handgrip, described fixing handgrip is provided with the latch for preventing pad movement, described pad is provided with the draw-in groove for latch occlusion.
9. angle according to claim 8 determines power bolt tightening method, it is characterized in that, the angle value that on described pad, adjacent graduation mark is formed is 10 °.
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| CN201310242452.6A CN103317477B (en) | 2013-06-18 | 2013-06-18 | A kind of angle determines power bolt tightening method and fastener |
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| CN201310242452.6A CN103317477B (en) | 2013-06-18 | 2013-06-18 | A kind of angle determines power bolt tightening method and fastener |
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| CN103317477B true CN103317477B (en) | 2015-09-30 |
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| CN109404405A (en) * | 2018-11-28 | 2019-03-01 | 包头钢铁（集团）有限责任公司 | A kind of anti-bolt repetition clamp device |
| CN110470427B (en) * | 2019-07-31 | 2021-07-06 | 中车青岛四方机车车辆股份有限公司 | Dynamic calibration device and method for angle display value of torque wrench |
| CN112412944B (en) * | 2020-11-18 | 2022-07-15 | 中铁大桥局集团有限公司 | Method for installing and checking high-strength bolt |
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| CN103317477A (en) | 2013-09-25 |
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