CN102513976B - Fastening method adopting torque self-balancing hydraulic bolt tightening device - Google Patents
Fastening method adopting torque self-balancing hydraulic bolt tightening device Download PDFInfo
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- CN102513976B CN102513976B CN201110417619.9A CN201110417619A CN102513976B CN 102513976 B CN102513976 B CN 102513976B CN 201110417619 A CN201110417619 A CN 201110417619A CN 102513976 B CN102513976 B CN 102513976B
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Abstract
The invention discloses a fastening method adopting a torque self-balancing hydraulic bolt tightening device, 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 the hydraulic driving mechanism and consists of an inner sleeve and a shell which are integrated with a serration ratchet, the outer sleeve is integrated with the shell of the hydraulic ratchet driving mechanism, and the torque transmission sleeve is used for being fixed with a bolt head of a multi-edge head bolt; 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 a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts.
Background technology
The large-scale turbomachinery of steam turbine and gas turbine and so on, centrifugal compressor unit, large heat exchangers etc. are in 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) is with the simple and mechanical instrument of operating grip; (2) with the pneumatic or hydraulic tool of the reaction arm of force and moment indication.Correspondingly, traditional fastening method has: (1) is manual tightening directly; (2) utilize applied moment to tighten; (3) after bolt tension, adopt (1), (2) kind method to tighten.
In traditional fastener and fastening method, have the following disadvantages:
(1) utilize the simple and mechanical instrument with operating grip to carry out, in fastening process, cannot knowing the size of applied force square in rundown process;
(2) no matter be to adopt simple tool, or carry out in fastening process with the instrument of the reaction arm of force and moment indication, all need to beyond bolt or nut, find suitable fulcrum, with the opposing torque in the fastening process of balance;
(3) owing to nut and bolt being applied to extra moment in fastening process, cause bolt in rundown process to deform (reversing or bending), this distortion may cause twists rear bolt looseness;
(4) owing to adopting, tighten or tighten by applied moment by hand, organize more bolt fastening process inevitably exist tighten asynchronous.In rundown process, on the impact of bolt around, be to cause having tighted a bolt loosening key factor around, and this impact is difficult to eliminate;
(5) after traditional bolt tension in tightening method, need on bolt, apply external force, often cause bolt thread wearing and tearing, have a strong impact on the fastening of next bolt;
(6) traditional fastener for bolt needs artificial participation, and specification requirement is high and labour intensity is large, the precision that very difficult assurance is tightened and cannot automation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts, solution utilizes conventional bolt device for screwing up cannot indicate moment in rundown process, need manual applied moment, and the problem of fragile bolt in stretching rundown process.
Technical scheme of the present invention is:
A kind of torque-self-balanced hydraulic screwing device for bolts, comprise with hydraulic drive mechanism the hydraulic pressure ratchet drive mechanism that is connected, is formed by the inner sleeve with serration ratchet one and casing, outer sleeve with the casing one of hydraulic pressure ratchet drive mechanism, for the moment that the bolt head with bolt with multi-angular head is fixing, transmit sleeve, the serration ratchet one of described inner sleeve and hydraulic pressure ratchet drive mechanism and be set in the bottom in outer sleeve, described moment is transmitted the top of sleeve set in outer sleeve.
Described outer sleeve and moment are transmitted between sleeve and are provided with spline housing, and outer sleeve and moment are transmitted the structure that can adopt other similar spline housings between sleeve, guarantee that outer sleeve and moment are transmitted sleeve circumferential without relatively rotating.
Described outer sleeve and moment are transmitted between sleeve and are provided with back-up ring, and outer sleeve and moment are transmitted between sleeve also can adopt other structures, guarantees that both can not depart from mutually in tightening operation.
The fastening method that adopts torque-self-balanced hydraulic screwing device for bolts, comprises the following steps:
(1), first by nut manually or be screwed onto on bolt with multi-angular head with certain pretightning force with instrument, then the inner sleeve of hydraulic pressure ratchet drive mechanism is sticked on nut, the bolt head of bolt with multi-angular head is sticked in the moment transmission sleeve of device for screwing up;
(2), when hydraulic drive mechanism drives inner sleeve fastening nut, the casing of relative fluid pressure type ratchet drive mechanism is subject to acting in opposition moment, this acting in opposition moment is passed to the outer sleeve with casing one, due to outer sleeve, moment is transmitted sleeve, between the bolt head of bolt with multi-angular head, circumferentially nothing relatively rotates, so the acting in opposition moment of outer sleeve is finally passed on bolt with multi-angular head, make to produce and nut equal and opposite in direction on the bolt with multi-angular head in tightening operation, the moment of opposite direction, when reaching the pretightning force of setting, bolt with multi-angular head-nut is tightened.
Described moment is transmitted between sleeve and the bolt head of bolt with multi-angular head and is provided with axial positioning mechanism.
Described torque-self-balanced hydraulic screwing device for bolts is a plurality of, the fluid pressure type ratchet drive mechanism of a plurality of torque-self-balanced hydraulic screwing device for bolts is connected with hydraulic drive mechanism by hydraulic distribution system, and hydraulic drive mechanism drives the fluid pressure type ratchet drive mechanism of a plurality of torque-self-balanced hydraulic screwing device for bolts to realize the operation that a plurality of bolt-nuts are synchronously tightened by hydraulic distribution system.
The structure that described moment is transmitted sleeve can adopt different structures according to the model of bolt with multi-angular head; The structure of described inner sleeve can adopt different structures according to the bolt of different model.
Advantage of the present invention:
(1), described device for screwing up in tightening operation process, the moment of reaction in can self-balancing nut screwing clamping process, avoids adopting the distortion of the bolted section that may cause in additional moment of reaction equilibrium process;
(2), described bolt with multi-angular head 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 region between nut and multi-angular bolt head, participate in fastening part bolt and do not bear extra twisting resistance, can guarantee that this section of bolt do not deform, also can not cause bolt thread wearing and tearing simultaneously;
(3), for bolt and the nut of different size, can select different size and inner sleeve serration ratchet one and moment to transmit sleeve, use fastening method of the present invention to realize tightening of bolt and nut;
(4), described hydraulic bolt device for screwing up is by hydraulic-driven, without extra applied moment; Tightening required moment can accurately be controlled by the pressure of hydraulic oil; Adopt hydraulic-driven, only need guarantee that the required moment of the pressure of hydraulic oil and nut screwing clamping adapts, and can avoid the overtighten of nut;
(5), a plurality of hydraulic bolt device for screwing up can drive by a hydraulic drive mechanism, realizing a plurality of bolt-nuts synchronously tightens, the pre-fastening moment of guaranteeing a plurality of nuts is even, avoids the inhomogeneous structure causing of moment to depart from the problem of revealing with medium.
Accompanying drawing explanation
Fig. 1 is the use structural representation of overlooking of the present invention.
Fig. 2 is the cutaway view of A-A in Fig. 1.
Fig. 3 is that embodiment of the present invention China and foreign countries hex bolts, moment are transmitted sleeve and the outer sleeve schematic diagram that is connected.
Fig. 4 is the cutaway view of B-B in Fig. 3.
Fig. 5 is the cutaway view of C-C in Fig. 3.
Fig. 6 is the cutaway view of D-D in Fig. 3.
Fig. 7 is the synchronous fastening operating structure schematic diagram of bolt-nut of the present invention.
The specific embodiment
See Fig. 1, Fig. 2, a kind of torque-self-balanced hydraulic screwing device for bolts, comprise with hydraulic drive mechanism 1 the hydraulic pressure ratchet drive mechanism 11 that is connected, is formed by inner sleeve 9 and casing 2, with the outer sleeve 3 of casing 2 one of hydraulic pressure ratchet drive mechanism, for the moment that the bolt head with bolt with multi-angular head is fixing, transmit sleeve 4, the serration ratchet one of inner sleeve 9 and hydraulic pressure ratchet drive mechanism and be set in outer sleeve 3 bottom, moment is transmitted sleeve 4 and is set in the top in outer sleeve 3, between outer sleeve and moment transmission sleeve, be provided with assurance and in week, upwards without the spline housing 5(of relative motion, see Fig. 6 between the two) (outer sleeve 3 and moment are transmitted between sleeve 4 can also adopt other similar structures, guarantee between the two in week upwards without relative motion) and assurance both tighten on not can slippage elastic spring 8(see Fig. 4), outer sleeve 3 and moment are transmitted between sleeve 4 can also adopt other similar structures, guarantee in tightening operation, can slippage.
See Fig. 1, Fig. 2, adopt the fastening method of torque-self-balanced hydraulic screwing device for bolts, comprise the following steps:
(1), first by nut 6 manually or be screwed onto on outer-hexagonal bolt 7 with certain pretightning force with instrument, then the inner sleeve of hydraulic pressure ratchet drive mechanism 9 is sticked on nut 6, the moment that the bolt head of outer-hexagonal bolt is sticked in to device for screwing up is transmitted in sleeve 4 and moment transmit between sleeve 4 and the outer-hexagonal bolt head of outer-hexagonal bolt 7, be provided with spring steel ball screw 10(and see Fig. 5), moment is transmitted the structure that can also adopt other spring-like steel ball screw 10 between sleeve 4 and the outer-hexagonal bolt head of outer-hexagonal bolt, to avoid turning relative motion axial in process, make both slippages,
(2), when hydraulic drive mechanism drives inner sleeve 9 fastening nut 6, the casing 2 of relative fluid pressure type ratchet drive mechanism is subject to acting in opposition moment, this acting in opposition moment is passed to the outer sleeve 3 with casing 2 one, due to outer sleeve 3, moment is transmitted sleeve 4, between the outer-hexagonal bolt head of outer-hexagonal bolt 7, circumferentially nothing relatively rotates, so the acting in opposition moment of outer sleeve 3 is finally passed on outer-hexagonal bolt 7, make to produce and nut 6 equal and opposite in directions on the outer-hexagonal bolt 7 in tightening operation, the moment of opposite direction, when reaching the pretightning force of setting, outer-hexagonal bolt 7 and nut 6 are tightened.
See Fig. 7, when torque-self-balanced hydraulic screwing device for bolts is while being a plurality of, the fluid pressure type ratchet drive mechanism 11 of a plurality of torque-self-balanced hydraulic screwing device for bolts is connected with hydraulic drive mechanism 13 by hydraulic distribution system 12, and hydraulic drive mechanism 13 drives the fluid pressure type ratchet drive mechanism 11 of a plurality of torque-self-balanced hydraulic screwing device for bolts to realize the operation that a plurality of bolt-nuts are synchronously tightened by hydraulic distribution system 12.
Claims (5)
1. a fastening method that adopts torque-self-balanced hydraulic screwing device for bolts, the hydraulic pressure ratchet drive mechanism that described torque-self-balanced hydraulic screwing device for bolts comprises with hydraulic drive mechanism and being connected, is comprised of the inner sleeve with serration ratchet one and casing, with the outer sleeve of the casing one of hydraulic pressure ratchet drive mechanism, for the moment that the bolt head with bolt with multi-angular head is fixing, transmit sleeve; The serration ratchet one of described inner sleeve and hydraulic pressure ratchet drive mechanism and be set in the bottom in outer sleeve, described moment is transmitted the top of sleeve set in outer sleeve; It is characterized in that: comprise following fastening step:
(1), first by nut manually or be screwed onto on bolt with multi-angular head with certain pretightning force with instrument, then the inner sleeve of hydraulic pressure ratchet drive mechanism is sticked on nut, the bolt head of bolt with multi-angular head is sticked in the moment transmission sleeve of device for screwing up;
(2), when hydraulic drive mechanism drives inner sleeve fastening nut, the casing of relative fluid pressure type ratchet drive mechanism is subject to acting in opposition moment, this acting in opposition moment is passed to the outer sleeve with casing one, due to outer sleeve, moment is transmitted sleeve, between the bolt head of bolt with multi-angular head, circumferentially nothing relatively rotates, so the acting in opposition moment of outer sleeve is finally passed on bolt with multi-angular head, make to produce and nut equal and opposite in direction on the bolt with multi-angular head in tightening operation, the moment of opposite direction, when reaching the pretightning force of setting, bolt with multi-angular head-nut is tightened.
2. a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts according to claim 1, is characterized in that: described outer sleeve and moment are transmitted between sleeve and is provided with spline housing.
3. a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts according to claim 1, is characterized in that: described outer sleeve and moment are transmitted between sleeve and is provided with back-up ring.
4. a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts according to claim 1, is characterized in that: described moment is transmitted between sleeve and the bolt head of bolt with multi-angular head and is provided with axial positioning mechanism.
5. a kind of fastening method that adopts torque-self-balanced hydraulic screwing device for bolts according to claim 1, it is characterized in that: described torque-self-balanced hydraulic screwing device for bolts is a plurality of, the fluid pressure type ratchet drive mechanism of a plurality of torque-self-balanced hydraulic screwing device for bolts is connected with hydraulic drive mechanism by hydraulic distribution system, and hydraulic drive mechanism drives the fluid pressure type ratchet drive mechanism of a plurality of torque-self-balanced hydraulic screwing device for bolts to realize the operation that a plurality of bolt-nuts are synchronously tightened by hydraulic distribution system.
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| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| 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 CN102513976A (en) | 2012-06-27 |
| CN102513976B true CN102513976B (en) | 2014-01-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP6414168B2 (en) * | 2016-09-26 | 2018-10-31 | トヨタ自動車株式会社 | Temporary fastening tool |
| CN107363522B (en) * | 2017-09-07 | 2023-06-06 | 广西玉柴机器股份有限公司 | Tightening device and tightening method for 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 |
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| 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 | A fluid operated torque tool for and a method of tightening a nut on a plate on railroad crossings |
| CN201586950U (en) * | 2009-10-15 | 2010-09-22 | 孙凤鸣 | Hydraulic sleeve wrench |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10118954A (en) * | 1996-10-15 | 1998-05-12 | Chubu Electric Power Co Inc | Bolt fastening device |
| WO2011100259A1 (en) * | 2010-02-09 | 2011-08-18 | Titan Technologies International, Inc. | Hydraulic bolt tensioner and nut |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101342689A (en) * | 2007-06-01 | 2009-01-14 | 约翰·K·琼克斯 | A fluid operated torque tool for and a method of tightening a nut on a plate on railroad crossings |
| CN201586950U (en) * | 2009-10-15 | 2010-09-22 | 孙凤鸣 | Hydraulic sleeve wrench |
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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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