CN102513976A - Torque self-balancing hydraulic bolt tightening device and tightening method - Google Patents
Torque self-balancing hydraulic bolt tightening device and tightening method Download PDFInfo
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- CN102513976A CN102513976A CN2011104176199A CN201110417619A CN102513976A CN 102513976 A CN102513976 A CN 102513976A CN 2011104176199 A CN2011104176199 A CN 2011104176199A CN 201110417619 A CN201110417619 A CN 201110417619A CN 102513976 A CN102513976 A CN 102513976A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a torque self-balancing hydraulic bolt tightening device and a tightening method, wherein the bolt tightening device comprises a hydraulic ratchet driving mechanism, an outer sleeve and a torque transmission sleeve, wherein the hydraulic ratchet driving mechanism is connected with a hydraulic driving mechanism and consists of an inner sleeve and a shell which are integrated with a serration ratchet wheel; the inner sleeve is sleeved at the lower part in the outer sleeve, and the torque transmission sleeve is sleeved at the upper part in the outer sleeve. The bolt tightening device can self balance the reaction torque in the tightening process in the tightening operation, does not need a reaction force arm, simultaneously, the bolt only bears the extra torque in the area between the tightened nut and the bolt head in the tightening process, and avoids the bolt from possibly loosening after the external torque is removed because the bolt participating in the tightening part bears the extra torque.
Description
Technical field
The present invention relates to maintenance and processing assembling field, specifically is a kind of moment of torsion self-balancing hydraulic bolt device for screwing up and fastening method.
Background technology
The large-scale turbomachinery of steam turbine and gas turbine and so on, centrifugal compressor unit, large heat exchanger etc. are in the installation and maintenance process, and splendid attire pressure medium, the equipment with seal request are usually directed to the fastening problem of a large amount of bolts.For the fastening problem that relates to one or more groups bolt-nut, traditional fastener has: (1) ribbon gymnastics is made the simple and mechanical instrument of handle; (2) the pneumatic or hydraulic tool of the band reaction arm of force and moment indication.Correspondingly, traditional fastening method has: (1) is directly manual tightens; (2) utilize applied moment to tighten; (3) adopt (1), (2) kind method to tighten after the bolt tension.
In the traditional fastener and fastening method, not enough below existing:
(1) the simple and mechanical instrument that utilizes ribbon gymnastics to make handle carries out can't knowing the size of applied force square in the rundown process in the fastening process;
(2) no matter be to adopt simple tool, or the instrument of the band reaction arm of force and moment indication carry out in the fastening process, all need beyond bolt or nut, seek suitable fulcrum, with the opposing torque in the fastening process of balance;
(3) owing in the fastening process nut and bolt is applied extra moment, cause that bolt deforms in the rundown process (reverse or crooked), this distortion possibly cause twists the back bolt looseness;
(4) owing to adopt and to tighten or to tighten by hand by applied moment, organize more bolt fastening process exist inevitably tighten asynchronous.Be the loosening key factor that tighted a bolt around causing to the influence of bolt on every side in the rundown process, and this influence is difficult to eliminate;
(5) after the traditional bolt tension in the tightening method, need on bolt, apply external force, often cause the bolt thread wearing and tearing, have a strong impact on the fastening of next bolt;
(6) traditional bolt device for screwing up needs artificial the participation, and specification requirement height and labour intensity are big, the precision that very difficult assurance is tightened and can't automation.
Summary of the invention
The technical problem that the present invention will solve provides a kind of moment of torsion self-balancing hydraulic bolt device for screwing up and fastening method; Solution utilizes the conventional bolt device for screwing up in rundown process, can't indicate moment; Need manual applied moment, and the problem of fragile bolt in the stretching rundown process.
Technical scheme of the present invention is:
A kind of moment of torsion self-balancing hydraulic bolt device for screwing up; Comprise with hydraulic drive mechanism be connected, by the hydraulic pressure ratchet drives mechanism that forms with the inner sleeve and the casing of serration ratchet one; Outer sleeve with the casing one of hydraulic pressure ratchet drives mechanism; Be used for transmitting sleeve the serration ratchet one of described inner sleeve and hydraulic pressure ratchet drives mechanism and be set in the bottom in the outer sleeve, the top of described moment transmission sleeve set in outer sleeve with the fixing moment of the bolt head of multi-angular hook bolt.
Be provided with spline housing between described outer sleeve and the moment transmission sleeve, outer sleeve and moment are transmitted the structure that can adopt other similar spline housings between the sleeve, guarantee that the circumferential nothing of outer sleeve and moment transmission sleeve relatively rotates.
Described outer sleeve and moment are transmitted between the sleeve and are provided with back-up ring, and outer sleeve and moment are transmitted between the sleeve also can adopt other structures, guarantees that both can not break away from mutually in tightening operation.
Adopt the fastening method of moment of torsion self-balancing hydraulic bolt device for screwing up, may further comprise the steps:
(1), at first nut manually or with instrument is screwed onto on the multi-angular hook bolt with certain pretightning force, the inner sleeve with hydraulic pressure ratchet drives mechanism is sticked on the nut then, and the bolt head of multi-angular hook bolt is sticked in the moment transmission sleeve of device for screwing up;
(2), when hydraulic drive mechanism drives the inner sleeve fastening nut; The casing of relative fluid pressure type ratchet drives mechanism receives acting in opposition moment; This opposing torque is passed to the outer sleeve with the casing one; Because outer sleeve, moment transmit circumferentially not have between the bolt head of sleeve, multi-angular hook bolt and do not relatively rotate,, make to produce on the multi-angular hook bolt in the tightening operation and nut equal and opposite in direction, moment in the opposite direction so the acting in opposition moment of outer sleeve finally is passed on the multi-angular hook bolt; When reaching the pretightning force of setting, multi-angular hook bolt-nut promptly is tightened.
Be provided with axial location mechanism between the bolt head of described moment transmission sleeve and multi-angular hook bolt.
The fluid pressure type ratchet drives mechanism of described a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up is connected with hydraulic drive mechanism through the hydraulic pressure distribution system, and hydraulic drive mechanism is realized the operation that a plurality of bolt-nuts are tightened synchronously through the fluid pressure type ratchet drives mechanism that the hydraulic pressure distribution system drives a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up.
The structure that described moment is transmitted sleeve can adopt various structure according to the model of multi-angular hook bolt; The structure of described inner sleeve can adopt various structure according to the bolt of different model.
Advantage of the present invention:
(1), described device for screwing up in the tightening operation process, the moment of reaction in can self-balancing nut screwing clamping process avoids adopting the distortion that adds the bolted section that possibly cause in the moment of reaction equilibrium process;
(2), described multi-angular hook bolt makes the opposing torque of hydraulic bolt device for screwing up in can the fastening process of self-balancing; Only bear extra moment of torsion being tightened between nut and the multi-angular bolt head zone; Participate in the fastening part bolt and do not bear extra twisting resistance; Can guarantee that this section bolt does not deform, also can not cause the bolt thread wearing and tearing simultaneously;
(3), for the bolt and the nut of different size, can select for use different size and inner sleeve serration ratchet one and moment to transmit sleeve, use tightening of fastening method realization bolt and nut of the present invention;
(4), described hydraulic bolt device for screwing up is by hydraulic-driven, need not extra applied moment; Tightening required moment can accurately be controlled by the pressure of hydraulic oil; Adopt hydraulic-driven, only need guarantee that the pressure of hydraulic oil and the required moment of nut screwing clamping adapt, and can avoid the overtighten of nut;
(5), a plurality of hydraulic bolt device for screwing up can drive through a hydraulic drive mechanism; Realize that a plurality of bolt-nuts tighten synchronously; The pre-fastening moment of guaranteeing a plurality of nuts is even, avoids the inhomogeneous structure that causes of moment to depart from the problem of revealing with medium.
Description of drawings
Fig. 1 is the utilization structure sketch map of overlooking of the present invention.
Fig. 2 is the cutaway view of A-A among Fig. 1.
Fig. 3 is that embodiment of the invention China and foreign countries hex bolts, moment are transmitted sleeve and the outer sleeve sketch map that is connected.
Fig. 4 is the cutaway view of B-B among Fig. 3.
Fig. 5 is the cutaway view of C-C among Fig. 3.
Fig. 6 is the cutaway view of D-D among Fig. 3.
Fig. 7 is bolt-nut of the present invention fastening operating structure sketch map synchronously.
The specific embodiment
See Fig. 1, Fig. 2; A kind of moment of torsion self-balancing hydraulic bolt device for screwing up; Comprise with hydraulic drive mechanism 1 the hydraulic pressure ratchet drives mechanism 11 that is connected, forms by inner sleeve 9 and casing 2; With the outer sleeve 3 of casing 2 one of hydraulic pressure ratchet drives mechanism, be used for transmitting sleeve 4 with the fixing moment of the bolt head of multi-angular hook bolt; The serration ratchet one of inner sleeve 9 and hydraulic pressure ratchet drives mechanism and be set in the outer sleeve 3 bottom; Moment is transmitted sleeve 4 and is set in the top in the outer sleeve 3; (outer sleeve 3 and moment are transmitted between the sleeve 4 can also not adopt other similar structures upwards there being spline housing 5 (see figure 6)s of relative motion week between the two to be provided with assurance between outer sleeve and the moment transmission sleeve; Guaranteeing does not upwards have relative motion in week between the two) and guarantee both tighten on not can slippage elastic spring 8 (see figure 4)s; Outer sleeve 3 and moment are transmitted between the sleeve 4 can also adopt other similar structures, guarantees in tightening operation, can slippage.
See Fig. 1, Fig. 2, adopt the fastening method of moment of torsion self-balancing hydraulic bolt device for screwing up, may further comprise the steps:
(1), at first nut 6 manually or with instrument is screwed onto on the outer-hexagonal bolt 7 with certain pretightning force; Inner sleeve 9 with hydraulic pressure ratchet drives mechanism is sticked on the nut 6 then; The moment that the bolt head of outer-hexagonal bolt is sticked in device for screwing up is transmitted in the sleeve 4 and moment is transmitted between the outer-hexagonal bolt head of sleeve 4 and outer-hexagonal bolt 7 and is provided with spring steel ball screw 10 (see figure 5)s; Can also adopt the structure of other spring-like steel ball screw 10 between the outer-hexagonal bolt head of moment transmission sleeve 4 and outer-hexagonal bolt, make both slippages to avoid relative motion axial in the process of turning;
(2), when hydraulic drive mechanism drives inner sleeve 9 fastening nuts 6; The casing 2 of relative fluid pressure type ratchet drives mechanism receives acting in opposition moment; This opposing torque is passed to the outer sleeve 3 with casing 2 one; Because outer sleeve 3, moment transmit circumferentially not have between the outer-hexagonal bolt head of sleeve 4, outer-hexagonal bolt 7 and do not relatively rotate,, make to produce on the outer-hexagonal bolt 7 in the tightening operation and nut 6 equal and opposite in directions, moment in the opposite direction so the acting in opposition moment of outer sleeve 3 finally is passed on the outer-hexagonal bolt 7; When reaching the pretightning force of setting, outer-hexagonal bolt 7 promptly is tightened with nut 6.
See Fig. 7; The fluid pressure type ratchet drives mechanism 11 of a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up is connected with hydraulic drive mechanism 13 through hydraulic pressure distribution system 12, and hydraulic drive mechanism 13 is realized the operation that a plurality of bolt-nuts are tightened synchronously through the fluid pressure type ratchet drives mechanism 11 that hydraulic pressure distribution system 12 drives a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up.
Claims (6)
1. moment of torsion self-balancing hydraulic bolt device for screwing up; It is characterized in that: comprise with hydraulic drive mechanism be connected, by the hydraulic pressure ratchet drives mechanism that forms with the inner sleeve and the casing of serration ratchet one; With the outer sleeve of the casing one of hydraulic pressure ratchet drives mechanism, be used for transmitting sleeve with the fixing moment of the bolt head of multi-angular hook bolt; The serration ratchet one of described inner sleeve and hydraulic pressure ratchet drives mechanism and be set in the bottom in the outer sleeve, described moment is transmitted the top of sleeve set in outer sleeve.
2. a kind of moment of torsion self-balancing hydraulic bolt device for screwing up according to claim 1 is characterized in that: described outer sleeve and moment are transmitted between the sleeve and are provided with spline housing.
3. a kind of moment of torsion self-balancing hydraulic bolt device for screwing up according to claim 1 is characterized in that: described outer sleeve and moment are transmitted between the sleeve and are provided with back-up ring.
4. adopt the fastening method of the described moment of torsion self-balancing of claim 1 hydraulic bolt device for screwing up, it is characterized in that: may further comprise the steps:
(1), at first nut manually or with instrument is screwed onto on the multi-angular hook bolt with certain pretightning force, the inner sleeve with hydraulic pressure ratchet drives mechanism is sticked on the nut then, and the bolt head of multi-angular hook bolt is sticked in the moment transmission sleeve of device for screwing up;
(2), when hydraulic drive mechanism drives the inner sleeve fastening nut; The casing of relative fluid pressure type ratchet drives mechanism receives acting in opposition moment; This opposing torque is passed to the outer sleeve with the casing one; Because outer sleeve, moment transmit circumferentially not have between the bolt head of sleeve, multi-angular hook bolt and do not relatively rotate,, make to produce on the multi-angular hook bolt in the tightening operation and nut equal and opposite in direction, moment in the opposite direction so the acting in opposition moment of outer sleeve finally is passed on the multi-angular hook bolt; When reaching the pretightning force of setting, multi-angular hook bolt-nut promptly is tightened.
5. the fastening method of employing moment of torsion self-balancing hydraulic bolt device for screwing up according to claim 4 is characterized in that: be provided with axial location mechanism between the bolt head of described moment transmission sleeve and multi-angular hook bolt.
6. the fastening method of employing moment of torsion self-balancing hydraulic bolt device for screwing up according to claim 4; It is characterized in that: the fluid pressure type ratchet drives mechanism of described a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up is connected with hydraulic drive mechanism through the hydraulic pressure distribution system, and hydraulic drive mechanism is realized the operation that a plurality of bolt-nuts are tightened synchronously through the fluid pressure type ratchet drives mechanism that the hydraulic pressure distribution system drives a plurality of moment of torsion self-balancing hydraulic bolt device for screwing up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110417619.9A CN102513976B (en) | 2011-12-14 | 2011-12-14 | Fastening method adopting torque self-balancing hydraulic bolt tightening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110417619.9A CN102513976B (en) | 2011-12-14 | 2011-12-14 | Fastening method adopting torque self-balancing hydraulic bolt tightening device |
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| CN102513976A true CN102513976A (en) | 2012-06-27 |
| CN102513976B CN102513976B (en) | 2014-01-29 |
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| CN201110417619.9A Active CN102513976B (en) | 2011-12-14 | 2011-12-14 | Fastening method adopting torque self-balancing hydraulic bolt tightening device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328650A (en) * | 2015-11-24 | 2016-02-17 | 同济大学 | Electric mounting tool for split nested one-sided bolt fastener |
| CN107363522A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | The device for screwing up and tightening method of a kind of hydraulic pump gear |
| CN107866777A (en) * | 2016-09-26 | 2018-04-03 | 丰田自动车株式会社 | Temporary fastening tool |
| CN111702716A (en) * | 2020-06-28 | 2020-09-25 | 江苏核电有限公司 | Tensile laborsaving device of large-scale horizontal centrifugal pump kingbolt of nuclear power station |
| CN112757208A (en) * | 2021-03-05 | 2021-05-07 | 广西华业建筑工程有限公司 | Bolt fastening device for scaffold electric wrench |
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| JPH10118954A (en) * | 1996-10-15 | 1998-05-12 | Chubu Electric Power Co Inc | Bolt tightening device |
| CN2493361Y (en) * | 2001-06-13 | 2002-05-29 | 桑有富 | Double-head screw dismounting device |
| CN1168577C (en) * | 2000-05-03 | 2004-09-29 | 尤尼克斯公司 | Method and apparatus for screwing up threaded connector |
| CN101342689A (en) * | 2007-06-01 | 2009-01-14 | 约翰·K·琼克斯 | Fluid operated torque tool for tightening nuts on a plate of a railroad crossing and method of tightening same |
| CN201586950U (en) * | 2009-10-15 | 2010-09-22 | 孙凤鸣 | Hydraulic sleeve wrench |
| WO2011100259A1 (en) * | 2010-02-09 | 2011-08-18 | Titan Technologies International, Inc. | Hydraulic bolt tensioner and nut |
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2011
- 2011-12-14 CN CN201110417619.9A patent/CN102513976B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10118954A (en) * | 1996-10-15 | 1998-05-12 | Chubu Electric Power Co Inc | Bolt tightening device |
| CN1168577C (en) * | 2000-05-03 | 2004-09-29 | 尤尼克斯公司 | Method and apparatus for screwing up threaded connector |
| CN2493361Y (en) * | 2001-06-13 | 2002-05-29 | 桑有富 | Double-head screw dismounting device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105328650A (en) * | 2015-11-24 | 2016-02-17 | 同济大学 | Electric mounting tool for split nested one-sided bolt fastener |
| CN105328650B (en) * | 2015-11-24 | 2017-07-11 | 同济大学 | A kind of electronic installation tool of split Nested-type single-side bolt fastener |
| CN107866777A (en) * | 2016-09-26 | 2018-04-03 | 丰田自动车株式会社 | Temporary fastening tool |
| CN107866777B (en) * | 2016-09-26 | 2019-07-30 | 丰田自动车株式会社 | Temporary fastening tool |
| CN107363522A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | The device for screwing up and tightening method of a kind of hydraulic pump gear |
| CN111702716A (en) * | 2020-06-28 | 2020-09-25 | 江苏核电有限公司 | Tensile laborsaving device of large-scale horizontal centrifugal pump kingbolt of nuclear power station |
| CN111702716B (en) * | 2020-06-28 | 2024-06-07 | 江苏核电有限公司 | Main bolt stretching labor-saving device of large horizontal centrifugal pump of nuclear power station |
| CN112757208A (en) * | 2021-03-05 | 2021-05-07 | 广西华业建筑工程有限公司 | Bolt fastening device for scaffold electric wrench |
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| CN102513976B (en) | 2014-01-29 |
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Address after: 230031 Hefei Changjiang Road, Anhui, No. 888 Patentee after: Hefei Universal Machinery Inst. Patentee after: Special Equipment Inspection Station of Hefei General Machinery Research Institute Address before: 230031 Hefei Changjiang Road, Anhui, No. 888 Patentee before: Hefei Universal Machinery Inst. Patentee before: pressure vessel Testing Station of Hefei General Machinery Research Institute |
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Address after: 230031 No. 888 Changjiang West Road, Hefei, Anhui Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Patentee after: Hefei General Machinery Research Institute special equipment inspection station Co., Ltd Address before: 230031 No. 888 Changjiang West Road, Hefei, Anhui Patentee before: HEFEI GENERAL MACHINERY Research Institute Patentee before: Special equipment inspection station of Hefei General Machinery Research Institute |
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