• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention concerns a control mechanism designed for manipulation with a stressing rod of a stressing unit which is used for fastening and prestressing of bolts, e.g. for flange joints of large pressure vessels, especially for flange joints of nuclear reactor vessels. The drive of the control mechanism of the stressing unit is a pseudo-planetary system of a gear mechanism which has the ability of both manual and mechanical control. A crown gear wheel is equipped with outer teeth and inner teeth. An inserted gear wheel of a driving pinion mates with the outer teeth. Only three planet gear wheels are inserted between the inner teeth of the crown gear wheel and the outer spur teeth of a central gear wheel. The central gear wheel is formed into the shape of a cylindrical shell which is bedded by its lower side, having a certain radial move possibility, on a wire bearing placed on a carrying body. A further part of the control mechanism forms a joint between the central gear wheel and the stressing rod which is equipped in its lower part with an inner thread corresponding to an auxiliary thread of a flange bolt, is relieved by a compensating spring leaning against the face of a supporting nut which revolves together with the stressing rod on a suspension bolt which has the same lead as the auxiliary thread of the flange bolt.
    公开号:SU1701468A1
    申请号:SU877774487
    申请日:1987-04-07
    公开日:1991-12-30
    发明作者:Немец Петр；Пенкава Йозеф
    申请人:Шкода, Концерновое Предприятие (Инопредприятие)；
    IPC主号:
    专利说明:

    This invention relates to a control mechanism of a jack for prestressing studs, for example, the main connector of large pressure vessels.
    A control jack mechanism is known (DE patent No. 2852105, B 23 P 19/06, 1980), which includes a jack body, an internal thread bushing, kinematically connected with a drive output link carrying a gear sprocket, and a sleeve, which has a disadvantage Its significant construction height.
    The aim of the invention is the expansion of technological capabilities by reducing the construction height of the device and the possibility of its operation in conditions of an ionizing medium.
    FIG. 1 shows the arrangement of the drive mechanical parts; in fig. 2 - control mechanism in section.
    The control mechanism of the jack consists of pinion 1, the shaft of which is installed, firstly, on bearings located in cover 2, and secondly, connected by means of clutch 3 to engine 4. Main pinion 1 is in mesh with intermediate wheel 5 The intermediate wheel 5 is mounted on the end of the shaft mounted in bearings placed in the cover 2. In addition, the gearing of this intermediate wheel 5 engages with external gearing 6 of the epicycle 7, the narrow crown of which is placed on the flange of the hollow bearing body 8. The epicyc 7 is attached the flywheel 9. In the internal engagement 10 of this epicycle 7 always rotate three
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    satellite 11, the shafts 12 of which are mounted in the upper part on the bearings in the cover 2, and in the lower part on the bearings placed in the flange of the bearing housing 8. The free ends of the shafts 12 of the satellites are extended and made in the form of prismatic shanks 13 for manual rotation . The satellites 11 also engage with an external cylindrical engagement 14, which is made on the central wheel 15. This central wheel 15 is also made hollow and inserted into the upper space of the cavity of the bearing body 8, and enters the recess in the cover 2, the crown of the central wheel 15 is made on the cylinder 16, which covers approximately half of the cavity of the bearing housing 8, the lower part of this cylindrical shell 16 has a shoulder, with which it is installed with some radial clearance in the upper ring of the wire hem The bottom 17, while the lower ring of this wire bearing 17 is pressed into the flange, made in the cavity of this bearing body 8. The radial clearance of the central wheel 15 provides the static definability of the pseudoplanetary gear when the gear wheels engage, the inner surface of the cavity of the cylindrical shell 16, m. e. The internal bore 18 is provided with radial groove guides 19. Two opposing stones 20 fall into the latter, connected to an annular insert 21, which in the lower part is connected to the end of the lower flange end flange 22 by means of a radial groove 23 and At the end of the flange of the tensioning rod 22. In the upper part and sleeve 25 of the coupling there is a shoulder 26, in which there is a recess for the annular insert 21. Inside the lower part of the sleeve 25 of the coupling there is a notch for the distance sleeve 27, Sleeve of the coupling 25 and the distance sleeve 27 is wearing The eye bolt 28 is inserted into the through axial bore 29, made in the tension rod 22. The eye bolt 28 is provided with a guide thread 30, the pitch of which coincides with the internal thread pitch 31 of the tension rod 22 and the auxiliary thread 32 studs of the main connector 33. A supporting nut 34 is screwed on this guide thread 30, on which a compensating spring 35 rests, the other end of which rests on the lower end of the sleeve 25 of the coupling. The carrier nut 34 is connected to the inside of the tensioning grip by 22 longitudinal keys 36 inserted into the grooves made in the wall of the axial bore 29. The bottom surface of the tensioning flange is т and
    22 in the lower half rests on a spherical washer 37, the lower spherical surface of which corresponds to a spherical recess made on the upper surface of the piston in the form of a circular ring 38. On the upper surface of the piston in the form of a circular ring 38 also rests the flange of the lower part of the bearing housing 8. The piston in the form the circular ring 38 is hollow. The tensioning rod 22 passes through it. From the level of the upper edge of the piston in the form of a circular ring 38 to the flange surface of the flange connection, the control mechanism of the jack is located in jack body 39,
    The mechanism works as follows.
    FIG. 2 shows the control mechanism of a jack in a position in which the tensioning ha 22 is screwed onto the auxiliary thread 32 of the stud of the main connector 33 HI with its flange rests on the spherical washer 37 of the piston in the form of a circular ring 38. In this position the stud of the main connector 33 can be subjected to a preliminary the voltage with the help of a working fluid supplied under the piston in the form of a circular ring 38. After the pressure drops, the tensioning rod 22 is unscrewed from the stud of the main connector 33 under the cover 2 to the position shown by the dash-dotted by niya. Then the jack moves to a further stud. By rotating the epicycle 7 using the flywheel 9 or the clutch 3 engine 4, rotation of the pinion gear i, the intermediate wheel 5 and through the sateplates 11 of the central wheel 15 also starts. The radial groove 19 of this central wheel 15 carries away the stones 20 of the ring insert 21, which by means of the radial groove the groove 23 and the radial tongs 24 rotate the tensioning pull 22. Together, around the fixed eye bolt 28, the sleeve 25 of the coupling, the distance sleeve 27 compensates for the spring 35 and the bearing nuts 34. The pitch of the guide thread 30, in which the carrier nut 34 moves, coincides with the pitch of the internal thread 31 of the tension rod 22, the relative position of the carrier nut 34 with respect to the tension rod 22 remains, and also after unscrewing the tension rod 22 from the auxiliary thread 32 of the main connector stud 33, since the tensioning weight 22 is balanced by a compensating spring 35, which compensates for the pitch deviations of each thread 31, 32 and 30. After the collar 26 is installed on the cover 2
    the rotation of the tensioning gig 22 is stopped and the control mechanism of the jack is prepared for moving the jack to a further stud. This is done in such a way that the non-shown lifting mechanism lifts the jack by the eyebolt 28. Thus, the compensating spring 35 is compressed, the carrier nut 34 rests on the spacer sleeve 24 and the jack as a whole is lifted by the cover 2 and the supporting body 8. With an increase in torque when unscrewing the tensioning rod 22, it is possible to turn directly the shanks of the hexagonal section 13 of the satellites 11 and thereby increase the torque several times. The possible misalignment of the tensioning gig 22 and the central wheel 15 is compensated by an annular insert 21 with two degrees of freedom in the radial direction.
    The screwing of the tensioning gig 22 onto the auxiliary thread 32 of the stud of the main connector 33 is carried out after installing the jack on the stud of the main connector 33 by turning the epicle 7 in the opposite direction.
    The present invention can be used for a jack intended for prestressing larger diameter studs of various prestressed connections of heavy engineering products.
    权利要求:
    Claims (5)
    [1]
    Claim 1. The control mechanism of the jack, comprising a jack body, a female thread, kinematically connected with an output drive link carrying the leading gear gear, and a clutch, characterized in that, in order to expand technological capabilities, it is equipped with a lid 2, and an epicycle 7, having both an external 6 gearing and an internal 10, are introduced into the kinematic chain, and also a central wheel 15, located coaxially with an epicycle 7, with an external 14 gearing and internal grooves and 19 and an annular piston 38, coaxially mounted on tire 22, with an intermediate wheel 5 between the external gearing of the epicycle 7 and the pinion gear 1, and three intermediate gears of the internal gearing of the central wheel 15 between the internal 10 gearing of the epicyclic gear 7. satellite 11, shafts 12 of which are mounted in
    The main body 8 and the lid 2, in addition, on the upper surface of the annular piston 38 is a spherical seat, in which a spherical washer 37 is located, the upper surface of which has the ability to interact with the flange of the rod 22, while arranged coaxially mounted on the eyebolt 28 carrying nut 34, having an external key connection, with
    the second 22, and the sleeve 25 with a notch and a collar 26, in the bore of which an annular insert 21 is mounted, having a radial groove 23 on the underside, in which the keys 24 are located, mounted
    At the end of the rod, the stones 20 located in the internal grooves 19 of the central wheel 15 are mounted on the ring insert 21; in addition, in the recess of the sleeve 25, there is an additionally inserted distance sleeve 27 mounted on the eyebolt 28, and the main nut 34 and the sleeve 25 is spring-loaded relative to one another by a balancing spring 35.
    [2]
    2. The mechanism according to claim 1, characterized in that the crown of the central wheel 15 is made on the cylindrical shell 16, and the guide grooves 19 are made on its inner surface, while on the inner surface of the cover 2 is made
    a recess in which the cylindrical shell 16 is mounted with its upper part, and its lower part is coaxially located in the bearing housing 8 on the additionally introduced wire ball bearing 17.
    [3]
    3. The mechanism for PP. 1 and 2, differing
    u and with the fact that the bearing body 8, ha ha 22 and the eye bolt 28 are made coaxially located.
    [4]
    4. Mechanism on PP. 1 and 2, which is different in that the epicycle 7 is equipped with a flywheel 9, and the ends of the shafts of the satellites 11 are elongated and made in the form of prismatic rods 13 of the manual drive.
    [5]
    5.Mechanism on p. 1-3, which is different - and the fact that the auxiliary thread pitch
    32 studs 33, internal threads 31 tons and 22 and the pitch of the guide threads 30 of the eyebolt 28 and the carrier nut 34 are the same.
    22
    1
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    同族专利:
    公开号 | 公开日
    CS288886A1|1987-09-17|
    DE3711544A1|1987-10-29|
    CS256631B1|1988-04-15|
    US4815344A|1989-03-28|
    JPS62257087A|1987-11-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2010126394A1|2009-04-30|2010-11-04|Gorbachev Nikolai Vladimirovich|Hydromechanical device for converting reciprocal motion into rotary motion with a continuous change in the transmission ratio|US3015975A|1959-11-17|1962-01-09|Biach Ind|Bolt-tensioning apparatus|
    US3722332A|1971-06-01|1973-03-27|Transfer Systems|Apparatus for securing the bolts of the reactor pressure vessel head to the reactor pressure vessel|
    DE2258859C2|1972-12-01|1989-07-13|Wirth Maschinen- Und Bohrgeraete-Fabrik Gmbh, 5140 Erkelenz, De|
    US3844533A|1973-03-12|1974-10-29|Transfer Systems|Automatic stud tensioner|
    DE2442798C2|1974-09-06|1986-07-03|Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz|Device for screwing in or unscrewing particularly heavy screw bolts|
    US4047456A|1974-12-17|1977-09-13|Kraftwerk Union Aktiengesellschaft|Motor-driven screwing and transporting tool for reactor pressure vessel head retaining fastenings|
    US4223575A|1977-11-21|1980-09-23|Westinghouse Electric Corp.|Reactor vessel stud turnout tool|
    DE2852105C2|1978-11-30|1988-01-28|Siemens Ag, 1000 Berlin Und 8000 Muenchen, De|
    US4569258A|1979-04-30|1986-02-11|Orban Joseph N|Power driven stud tensioning device|FR2631868B1|1988-05-25|1990-09-21|Framatome Sa|DEVICE AND METHOD FOR SCREWING AND SCREWING A NUT ONTO A CONNECTING ELEMENT|
    DE9316464U1|1993-10-28|1994-01-20|Wagner Paul Heinz|Tensioning device for stretching screws|
    US5803436A|1993-12-08|1998-09-08|Hohmann; Frank|Hydraulic tensioning device for threaded bolt|
    DE4408873C2|1994-03-16|1999-02-11|Westfalia Nukleartechnik Gmbh|Screw tensioning device, in particular for screwed covers, especially in the case of reactor pressure vessels|
    US6199453B1|1998-04-28|2001-03-13|Steinbock Machinery Co.|High temperature bolting system|
    DE102004043145B3|2004-09-03|2006-05-18|Hohmann, Jörg|Hydraulic bolt tensioning device|
    DE102009043907A1|2009-08-31|2011-03-03|Frank Hohmann|Hydraulic threaded bolt tensioning device and method for large screwing by means of the hydraulic threaded bolt tensioning device|
    CN102717260B|2012-05-28|2014-02-12|中国水利水电第七工程局有限公司|Platform for disassembling and assembling oil cylinder piston|
    CN104175115B|2014-08-07|2016-08-24|重庆齿轮箱有限责任公司|Planetary gear centering device|
    CN104551637B|2014-12-29|2016-12-07|中国第一重型机械股份公司|A kind of bolt stretching machine for pressure vessel|
    GB2580090B|2018-12-21|2021-08-25|Caterpillar Energy Solutions Gmbh|Device for tensioning a connecting element|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CS862888A|CS256631B1|1986-04-22|1986-04-22|Control mechanism for tensioning unit|
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