CN201524901U - Novel bolt stretching machine - Google Patents
Novel bolt stretching machine Download PDFInfo
- Publication number
- CN201524901U CN201524901U CN2009202036591U CN200920203659U CN201524901U CN 201524901 U CN201524901 U CN 201524901U CN 2009202036591 U CN2009202036591 U CN 2009202036591U CN 200920203659 U CN200920203659 U CN 200920203659U CN 201524901 U CN201524901 U CN 201524901U
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- bolt
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- stretching machine
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Abstract
The utility model relates to a bolt stretching machine used for fastening and detaching a pressure container used by a nuclear reactor. The utility model aims at the defects such as incapability of prior-art stretching machine for simultaneously pre-tightening a plurality of bolts and manpower and material resources wastage, and provides a novel bolt stretching machine which is composed of a plurality of stretchers with same structure. Each stretcher comprises a base (3), a main nut rotating device (4), a first motor (5), a high-pressure oil cylinder (6), a piston (7), a second motor (8), a control system (9), a supporting nut rotating device (10), a rotating gear (11) and a supporting assembly (13). The novel bolt stretching machine can simultaneously perform fastening and detaching to a group of screws, realizes totally automation and saves large amount of manpower and material resources. The pre-tightening force can be accurately controlled through the control system for obtaining a more accurate bolt load so that the force bearing of each bolt is uniform and the sealing effect of a pressure container is improved.
Description
Technical field
The utility model relates to the encapsulation and the opening device of large pressurized vessel, particularly a kind of bolt tension device that is used for the fastening of used by nuclear reactor pressure vessel and dismounting.
Background technology
A lot of root kingbolts are arranged on the nuclear fuel material pressure vessel, and the nuclear fuel in the container is revealed can serious harm society, so container must have good sealing property, and the desire of kingbolt tightly is very important.Must screw fast during the dismounting kingbolt, unclamp fast, and the working space of assembling-disassembling bolt is little, operation inconvenience, high to the dismounting specification requirement.Existing hydraulic elongator can only stretch to single bolt, can't carry out synchro-draw to a plurality of bolts, operating efficiency is very low, and use this stretcher fastening and the dismounting nut need manually-operated, the waste lot of manpower and material resources, and the size of pretightning force when manually-operated can't be judged clamp nut accurately, operating accuracy is low.
The utility model content
The purpose of this utility model provides a kind of novel bolt tension machine, makes them can the simultaneously fastening and a plurality of nuts of dismounting, and does not need the fastening and dismounting operation of manually-operated, and the size of pretightning force can be set again accurately.
The technical solution of the utility model is: a kind of novel bolt tension machine is made of the identical stretcher of a plurality of structures, and stretcher comprises base 3, mother nut whirligig 4, first motor 5, high-voltage oil cylinder 6, piston 7, second motor 8, control system 9, back nut whirligig 10, swing pinion 11 and supporting component 13.Mother nut whirligig 4 is fixed in the perforate of base 3 sides, first motor 5 is connected with mother nut whirligig 4, high-voltage oil cylinder 6 is fixed on the base 3, supporting component 13 is connected with the top of piston 7, piston 7 is positioned at high-voltage oil cylinder 6 inside, holding nut whirligig 10 is fixed on the supporting component 13 by support bar, the output gear of holding nut whirligig 10 and swing pinion 11 engagements, holding nut whirligig 10 is connected with second motor 8, control system 9 is fixed on the base 3 by support frame, a plurality of stretchers are installed on the general frame body, constitute integral type bolt tension machine.
The overtravel alarm is set in the control system 9.
Mother nut whirligig 4 is level Four gear drives; Back nut whirligig 10 is three-stage gear transmission devices.
The beneficial effects of the utility model are: a set of equipment has a plurality of stretchers, can carry out fastening simultaneously and dismounting to one group of bolt; Device is provided with mother nut whirligig and holding nut whirligig, is implemented by the action of control system control each several part, realizes full automation, saves lot of manpower and material resources; Can in very little space, finish the dismounting of bolt; Accurately control the size of pretightning force by control system, can obtain more accurate bolt load, make each bolt strained evenly, the sealing effectiveness of pressure vessel more.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model;
Fig. 2 is a plan structure schematic diagram of the present utility model;
Fig. 3 is the partial enlarged drawing of Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated, but be not limited to embodiment.
The utility model is made of the identical stretcher of a plurality of structures, as shown in Figure 1, stretcher comprises base 3, mother nut whirligig 4, first motor 5, high-voltage oil cylinder 6, piston 7, second motor 8, control system 9, back nut whirligig 10, swing pinion 11 and supporting component 13.Mother nut whirligig 4 is level Four gear drives, and back nut whirligig 10 is three-stage gear transmission devices.Mother nut whirligig 4 is fixed in the perforate of base 3 sides, first motor 5 is connected with mother nut whirligig 4 usefulness screws, high-voltage oil cylinder 6 is screwed on base 3, supporting component 13 is connected by the top of screw with piston 7, piston 7 is positioned at high-voltage oil cylinder 6 inside, holding nut whirligig 10 is fixed on the supporting component 13 by support bar, the output gear of holding nut whirligig 10 and swing pinion 11 engagements, second motor 8 is connected with holding nut whirligig 10 usefulness screws, control system 9 is fixed on the base 3 by support frame, a plurality of stretchers are installed on the general frame body, constitute integral type bolt tension machine, control system 9 can show the amount of tension of bolt, surpasses setting value as amount of tension, and the overtravel alarm in the control system 9 begins to report to the police.
Operation principle of the present utility model: fastening process:
The first step, the construction bolt stretching-machine.Kingbolt 1 is navigated on the top cover 15 of pressure vessel, mother nut 14 is screwed on the kingbolt 1; The pillar of bolt tension machine is supported on stretching-machine on the top cover 15, and slowly adjustable fixing makes stretcher be in the appropriate location.
Second step, the stretching kingbolt.Starter motor 8, holding nut 12 is screwed in fully the top of kingbolt 1 by holding nut whirligig 10 and swing pinion 11, make that holding nut 12 can bear tensile force in drawing process, the supporting components 13 above this moment piston 7 withstand on holding nut 12 below; High-voltage oil cylinder 6 is fixed on the base 3, and base 3 places on the top cover of pressure vessel, and to high-voltage oil cylinder 6 oilings, the pressure of oil moves upward piston 7, by supporting component 13 with holding nut 12 jack-up, thereby kingbolt 1 is elongated.
The 3rd step: fastening mother nut.Kingbolt 1 is elongated and makes mother nut 14 loosening, and and packing ring 2 between produce certain slit; After reaching corresponding stretching displacement amount, start first motor 5, by mother nut whirligig 4 rotation mother nuts 14, after mother nut 14 is tightened fully, reduce the pressure of high-voltage oil cylinder 6, kingbolt 1 deformation resilience, thus reach tightening state.A plurality of stretchers are worked simultaneously and can be carried out fastening to one group of bolt simultaneously and dismounting.
Unloading process:
The first step, the construction bolt stretching-machine.The bolt tension machine is supported on the top cover of pressure vessel and mixes up the position.
Second step, the stretching kingbolt.With second step of fastening process.
The 3rd step, the dismounting mother nut.Kingbolt 1 is elongated and makes that mother nut 14 is loosening, after kingbolt 1 reaches corresponding stretching displacement amount, starts first motor 5, by mother nut whirligig 4 rotation mother nuts 14, finish unloading process, and the pressure of reduction high-voltage oil cylinder 6 makes the kingbolt resilience.
In the course of the work, control system 9 is implemented according to the action of the control parameter control each several part of input, and shows data such as pretightning force, pulling force, bolt elongate amount.When the stroke of piston surpasses 20mm; the warning of can blowing a whistle of overtravel alarm; if continue pressurization; stroke surpasses 25mm; the unloader of Hydraulic Station will be opened, and makes hydraulic oil directly be back to oil pipe, hydraulic return station without high-voltage oil cylinder 6; oil pressure in the high-voltage oil cylinder 6 no longer raises, and then plays the effect of overtravel protection.Described 20mm and 25mm are the parameters that operating personnel input to control system 9, and the concrete numerical value of this parameter is not unique, can set according to actual needs.
Claims (2)
1. novel bolt tension machine, it is characterized in that, it is made of the identical stretcher of structure, described stretcher comprises base (3), mother nut whirligig (4), first motor (5), high-voltage oil cylinder (6), piston (7), second motor (8), control system (9), back nut whirligig (10), swing pinion (11) and supporting component (13), mother nut whirligig (4) is fixed in the perforate of base (3) side, first motor (5) is connected with mother nut whirligig (4), high-voltage oil cylinder (6) is fixed on the base (3), supporting component (13) is connected with the top of piston (7), holding nut whirligig (10) is fixed on the supporting component (13) by support bar, the output gear of holding nut whirligig (10) and swing pinion (11) engagement, second motor (8) is connected with holding nut whirligig (10), control system (9) is fixed on the base (3) by support frame, described stretcher is installed on the general frame body, constitutes integral type bolt tension machine.
2. a kind of novel bolt tension machine according to claim 1 is characterized in that described control system is provided with the overtravel alarm in (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202036591U CN201524901U (en) | 2009-09-24 | 2009-09-24 | Novel bolt stretching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202036591U CN201524901U (en) | 2009-09-24 | 2009-09-24 | Novel bolt stretching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201524901U true CN201524901U (en) | 2010-07-14 |
Family
ID=42516200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202036591U Expired - Fee Related CN201524901U (en) | 2009-09-24 | 2009-09-24 | Novel bolt stretching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201524901U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029007A (en) * | 2014-06-13 | 2014-09-10 | 中科华核电技术研究院有限公司 | Entire bolt stretcher for nuclear reactor pressure vessels and operating process thereof |
| CN104097058A (en) * | 2014-07-08 | 2014-10-15 | 大连交通大学 | Stud tensioner for sealing nuclear reactor pressure vessels |
| CN104751621A (en) * | 2013-12-31 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Infrared transmission system of digital metering instrument for bolt tensioner |
| CN104959441A (en) * | 2015-07-03 | 2015-10-07 | 成都海光核电技术服务有限公司 | Combined type integrated drawing machine of king bolt reactor pressure vessel and use method thereof |
| CN105033622A (en) * | 2015-06-01 | 2015-11-11 | 北京雷蒙赛博机电技术有限公司 | Supporting ring reducing mechanism for rigid reducing type all-synchronous bolt tensioner |
| CN105414948A (en) * | 2016-01-19 | 2016-03-23 | 喻明 | Bolt-tensioning-pretightened device and assembly formed by bolt-tensioning-pretightened device |
| CN104097058B (en) * | 2014-07-08 | 2016-11-30 | 大连交通大学 | A kind of bolt stretching machine sealed for nuclear reactor pressure container |
| CN106624760A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山市三江机械有限公司 | Overtravel alarming and resetting stretcher and stretching method thereof |
| CN106737347A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of overtravel alarm stretcher and its drawing process |
| CN106736481A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of stretcher and its stretching and installation method |
| CN106736480A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of hydraulic elongator and its drawing process |
| CN108705486A (en) * | 2018-07-15 | 2018-10-26 | 德州德劲液压动力有限公司 | A kind of intelligence stretcher |
| CN110900506A (en) * | 2019-11-22 | 2020-03-24 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN113894533A (en) * | 2021-12-08 | 2022-01-07 | 东方法马通核泵有限责任公司 | Hydraulic stretching quick installation method for main pump main bolt |
-
2009
- 2009-09-24 CN CN2009202036591U patent/CN201524901U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104751621A (en) * | 2013-12-31 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Infrared transmission system of digital metering instrument for bolt tensioner |
| CN104751621B (en) * | 2013-12-31 | 2018-04-27 | 中核武汉核电运行技术股份有限公司 | A kind of digital metering instrument Infrared Transmission system for bolt stretching machine |
| CN104029007B (en) * | 2014-06-13 | 2016-08-24 | 中广核研究院有限公司 | Nuclear reactor pressure container overall bolt stretching machine and operating procedure thereof |
| CN104029007A (en) * | 2014-06-13 | 2014-09-10 | 中科华核电技术研究院有限公司 | Entire bolt stretcher for nuclear reactor pressure vessels and operating process thereof |
| CN104097058A (en) * | 2014-07-08 | 2014-10-15 | 大连交通大学 | Stud tensioner for sealing nuclear reactor pressure vessels |
| CN104097058B (en) * | 2014-07-08 | 2016-11-30 | 大连交通大学 | A kind of bolt stretching machine sealed for nuclear reactor pressure container |
| CN105033622A (en) * | 2015-06-01 | 2015-11-11 | 北京雷蒙赛博机电技术有限公司 | Supporting ring reducing mechanism for rigid reducing type all-synchronous bolt tensioner |
| CN104959441A (en) * | 2015-07-03 | 2015-10-07 | 成都海光核电技术服务有限公司 | Combined type integrated drawing machine of king bolt reactor pressure vessel and use method thereof |
| CN105414948A (en) * | 2016-01-19 | 2016-03-23 | 喻明 | Bolt-tensioning-pretightened device and assembly formed by bolt-tensioning-pretightened device |
| CN106624760A (en) * | 2016-12-31 | 2017-05-10 | 马鞍山市三江机械有限公司 | Overtravel alarming and resetting stretcher and stretching method thereof |
| CN106737347A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of overtravel alarm stretcher and its drawing process |
| CN106736481A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of stretcher and its stretching and installation method |
| CN106736480A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of hydraulic elongator and its drawing process |
| CN108705486A (en) * | 2018-07-15 | 2018-10-26 | 德州德劲液压动力有限公司 | A kind of intelligence stretcher |
| CN108705486B (en) * | 2018-07-15 | 2023-12-29 | 德州德劲液压动力有限公司 | Intelligent stretcher |
| CN110900506A (en) * | 2019-11-22 | 2020-03-24 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN110900506B (en) * | 2019-11-22 | 2021-05-18 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN113894533A (en) * | 2021-12-08 | 2022-01-07 | 东方法马通核泵有限责任公司 | Hydraulic stretching quick installation method for main pump main bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20100924 |