CN204975942U - A support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher - Google Patents
A support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher Download PDFInfo
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- CN204975942U CN204975942U CN201520366062.4U CN201520366062U CN204975942U CN 204975942 U CN204975942 U CN 204975942U CN 201520366062 U CN201520366062 U CN 201520366062U CN 204975942 U CN204975942 U CN 204975942U
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- support ring
- stretching machine
- rigidity reducing
- reducing type
- bolt stretching
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Abstract
This patent provides a support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher, and the key feature of this mechanism is by the support ring assembly of the N evenly distributed's of group the two -way push rod of synchronization, branch N lamella and hangs the support ring of holding the support ring that the N lamella equallys divide and allowwing the N lamella to equally divide and make radial swinging's special lifting device and constitute. Through the interoperation of the synchronous two -way push rod of special lifting device and N group, make the interior wide footpath of support ring of rigidity reducing formula full synchronizing bolt stretcher increase or reduce to the requirement of integral full synchronizing bolt stretcher is used in the adaptation on the reactor pressure vessel who pushes up the structure is piled in the integration. Reactor pressure vessel uses integral full synchronizing bolt stretcher to carry out the installation of top cap / unpack technology apart, and the process route is simple, and the pretightning force of kingbolt is even, and pressure vessel's is sealed reliable, significantly reduces the shutdown time of reloading to operating personnel quantity and time under the high radiation environment significantly reduce.
Description
Technical field
This patent relates to a kind of support ring diameter changing mechanism for rigidity reducing type synchronize fully bolt stretching machine.
Background technology
Reactor pressure vessel adopts automatic synchronize fully bolt stretching machine to install/take apart technique, and the intervention time of operating personnel under radiation condition greatly reduces, and operating procedure route is simple, and the pretightning force of kingbolt is even, and sealing effectiveness is reliable.Therefore, automatic synchronize fully bolt stretching machine is widely used in the opening of the reactor pressure vessels such as current M310, CPR1000, buckle closure process.Adopt the reactor pressure vessel of integration heap roof construction, maximum gabarit diameter due to its top cover is greater than main flange kingbolt pitch circle diameter, the integral support ring of automatic synchronize fully bolt stretching machine cannot be inserted in, and therefore can only adopt the bolt stretching machine of the packet synchronization of split type support ring at present.The bolt stretching machine operating procedure of split type packet synchronization, the intervention time of operating personnel under radiation environment is long, and operation sequence is complicated, and the pretightning force lack of homogeneity of kingbolt, total buckle closure time of opening is long, and sealing for pressure vessels property reliable for effect is low.Adopt the automatic synchronize fully bolt stretching machine of fixed diameter integral support ring can not adapt to the reactor pressure vessel of integration heap roof construction by property requirement.Want to play the significant advantage of automatic synchronize fully bolt stretching machine in kingbolt installation/unpack procedure on the reactor pressure vessel of integration heap roof construction, the automatic synchronize fully bolt stretching machine that the wide footpath of support ring Inner is variable must be adopted.This patent for automatic synchronize fully bolt stretching machine support ring reducing function and invent.
The automatic synchronize fully bolt stretching machine of current integral support ring mainly contains following characteristics:
The diameter of the fixed diameter formula support ring of automatic synchronize fully bolt stretching machine is fixing.When the heap top component of the reactor pressure vessel of integration heap roof construction maximum gabarit diameter close to or when being greater than the minimum distribution internal diameter of reactor pressure vessel flange kingbolt, synchronize fully bolt stretching machine fixed diameter formula support ring just cannot pile the maximum gabarit diameter of roof construction by integration.Which limits the application of synchronize fully bolt stretching machine on the novel reactor pressure vessel with integration heap roof construction of fixed diameter formula support ring.
The scheme that existing solution integration heap roof construction is inserted in synchronize fully stretching-machine is: original integrated support ring is divided into quarter.Then the special hanger being greater than the maximum gabarit diameter of heap top component by a hanger rope distribution circle hangs four parts of support rings respectively, special hanger is when dropping to heap top component gabarit diameter and being less than the height of bolt circle by four parts of support rings, by hawser, the four pieces of support ring tractives be separated are close together, become a domain by bolt or bearing pin positioning combination again, the complete support ring combined continues to drop in the upper flange surface of top cover flange.The advantage of this scheme is that structure is simple, and cost is low.But due to four pieces of support rings moving process hang on hanger rope flexibly, cause closing up the motion instability with four pieces of support rings in separate operation process, not only be difficult to operation, and have great risk cause the weighing support ring of tens tons to clash into heap top component.
Main purpose of the present invention develop exactly a kind of N block support ring all the time rigid attachment, and can to control separately and close up the mechanism of process in automatic steady ground together.
Summary of the invention
The object of this patent is the above-mentioned technological deficiency of the synchronize fully bolt stretching machine for fixed diameter formula support ring, provides a kind of rigidity automatic diameter changing of the support ring of synchronize fully bolt stretching machine that realizes
support ring diameter changing mechanism.The function of this device: the automatic adjustment realizing the wide footpath of automatic synchronize fully bolt stretching machine support ring Inner, makes the wide footpath of support ring Inner both can separately become large, thus can through the integration heap roof construction of reactor pressure vessel; The wide footpath of support ring Inner automatically can close up again and diminishes, and makes support ring after through integration heap roof construction, can distribute round coupling with the kingbolt of reactor lid flange.
The technical scheme that this patent is taked is: the support ring of synchronize fully bolt stretching machine is divided into N group according to kingbolt quantity, and the support ring assembly that diameter changing mechanism is divided equally by the equally distributed synchronous bidirectional push rod of N group, N group 1/N distinguish support ring assembly and hanging holding N lobe the special hanger that the support ring assembly allowing N lobe to divide equally radially wobbles form.The equally distributed synchronous bidirectional push rod of N group is connected with N group 1/N distinguish support ring assembly, composition automatic diameter changing formula rigidity reducing type synchronize fully bolt stretching machine support ring assembly.Make N lobe support ring assembly synchronously separate or close up by the synchronization action of N group synchronous bidirectional push rod, thus realize the increase in the wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner or reduce.The suspension rod of special hanger can radially wobble by relative response heap.Synchronous bidirectional push rod by with the coordinating of special hanger, realize the application of rigidity reducing type synchronize fully bolt stretching machine on the reactor pressure vessel of integration heap roof construction.
Here N is an integer;
When kingbolt quantity M can be divided exactly by 3, N can get 3 or 6;
When kingbolt quantity M can be divided exactly by 2, N can get 4;
When kingbolt quantity M can be divided exactly by 5, N can get 5;
Above-mentioned special hanger is primarily of the main suspension ring of support ring suspender, the equally distributed swingable suspension rod of N group, the equally distributed suspender composition of N group.
The concrete action of support ring automatic diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine is as follows:
1) action when rigidity reducing type synchronize fully bolt stretching machine enters reactor pit:
During lifting, the support ring of rigidity reducing type synchronize fully bolt stretching machine is diameter minimum state.
When rigidity reducing type synchronize fully bolt stretching machine winches to above reactor pressure vessel, the action of N group support ring synchronous bidirectional push rod automatic synchronization, N group synchronous bidirectional push rod two end flanges does synchronous separately translation, thus drive the synchronously separately translation of the equally distributed support ring of N lobe, the wide footpath of support ring Inner realizing rigidity reducing type synchronize fully bolt stretching machine increases, until stop when the internal diameter of the support ring of rigidity reducing type synchronize fully bolt stretching machine is greater than the maximum gabarit diameter of reactor pressure vessel integration heap roof construction.
Start reactor building loop wheel machine, slowly fall, make rigidity reducing type synchronize fully bolt stretching machine by reactor pressure vessel integration heap roof construction.
Rigidity reducing type synchronize fully bolt stretching machine is by after integration heap roof construction, and reactor building ring hangs and stops declining.Start N group support ring synchronous bidirectional push rod synchronization action, N group synchronous bidirectional push rod two end flanges synchronously does closed translation, the equally distributed support ring of N lobe is driven to do closed translation, thus the wide footpath of the support ring Inner realizing rigidity reducing type synchronize fully bolt stretching machine reduces, until the wide footpath of the support ring Inner of rigidity reducing type synchronize fully bolt stretching machine is mated with the distribution circle of reactor pressure vessel kingbolt.Start reactor building loop wheel machine, rigidity reducing type synchronize fully bolt stretching machine is slowly dropped on operating position.
2) action when exiting reactor pit:
After bolt tension work completes, now, the support ring of rigidity reducing type synchronize fully bolt stretching machine is in diameter minimum state.Start reactor building loop wheel machine, stop when rigidity reducing type synchronize fully bolt stretching machine being slowly promoted near reactor pressure vessel integration heap roof construction.
Start N group support ring synchronous bidirectional push rod synchronization action, N group synchronous bidirectional push rod two end flanges synchronously does separately translation, thus drive the equally distributed support ring assembly of N lobe to do separately translation, thus the wide footpath of the support ring Inner realizing rigidity reducing type synchronize fully bolt stretching machine increases, until the wide footpath of the support ring Inner of rigidity reducing type synchronize fully bolt stretching machine is greater than the maximum gabarit diameter of reactor pressure vessel integration heap roof construction.
Start reactor building loop wheel machine, slowly rise, make rigidity reducing type synchronize fully bolt stretching machine by the largest contours external diameter of reactor pressure vessel integration heap roof construction.After largest contours external diameter by integration heap roof construction, start N group support ring synchronous bidirectional push rod synchronization action, the wide footpath of support ring Inner realizing rigidity reducing type synchronize fully bolt stretching machine reduces.Then, rigidity reducing type synchronize fully bolt stretching machine is placed on its support stand.
Concrete feature is as follows:
The support ring assembly that the support ring synchronous bidirectional push rod of rigidity reducing type synchronize fully bolt stretching machine is divided equally by the equally distributed synchronous bidirectional push rod of N group, N lobe and the support ring that hanging holding N lobe is divided equally the special hanger that support ring is radially wobbling allowing N lobe to divide equally form.
N group synchronous bidirectional push rod synchronization action.
The action that the wide footpath of support ring Inner that special hanger coordinates support ring synchronous bidirectional push rod to realize rigidity reducing type synchronize fully bolt stretching machine increases or reduces.
Accompanying drawing explanation
Fig. 1 a and 1b is the structural representation of synchronous bidirectional push rod.
Fig. 2 is support ring assembly structure schematic diagram.
Fig. 3 is special hanger structural representation.
The reactor pressure vessel structural representation of the integrated heap roof construction of Fig. 4.
Schematic diagram when Fig. 5 a is the footpath increase of rigidity reducing type synchronize fully bolt stretching machine support ring Inner exterior feature.
Interference relation top view when Fig. 5 b is the footpath increase of rigidity reducing type synchronize fully bolt stretching machine support ring Inner exterior feature.
Fig. 6 a is rigidity reducing type synchronize fully bolt stretching machine support ring Inner wide footpath schematic diagram when reducing.
Fig. 6 b is that relation top view is interfered when reducing in rigidity reducing type synchronize fully bolt stretching machine support ring Inner wide footpath.
In figure:
1, synchronous bidirectional push rod, 11, unit head, 11a, motor, 11b, worm and gear assembly, 11c, rotary encoder, 12, positive/negative thread screw mandrel, 13, guider, 14, Connection Block, 14a, nut, 15, attachment screw;
2,1/N distinguish support ring assembly, 21,1/N distinguish support ring circumference alignment pin, 22,1/N distinguish support ring circumference dowel hole;
3, special hanger, 31, the main suspension ring of support ring suspender, 32, suspension rod, 33, the equally distributed suspender of N group;
4, the main suspension hook of reactor building;
5, reactor pressure vessel integration heap roof construction;
6, kingbolt assembly.
Detailed description of the invention
Below in conjunction with Figure of description, this patent exemplary embodiments is further described in detail.
This fact column is the top cover of reactor pressure vessel can divided exactly by 4 based on a kingbolt quantity M.N=4。
The stroke of the support ring synchronous bidirectional push rod 1 of rigidity reducing type synchronize fully bolt stretching machine as illustrated in figs. ia and ib designs to make the reactor pressure vessel of rigidity reducing type synchronize fully bolt tension function adaptation integration heap roof construction as shown in Figure 4.The reactor pressure vessel of this integration heap roof construction, is characterized in that the maximum gabarit diameter of integration heap roof construction is greater than or close to the minimum distribution internal diameter of reactor pressure vessel kingbolt assembly 6.
During the work of monoblock type synchronize fully stretching-machine, need by reactor pressure vessel integration heap roof construction 5 and enter the operating position of installing kingbolt assembly 6.But the maximum gabarit diameter piling roof construction 5 because reactor pressure vessel is integrated is larger, and reactor pressure vessel kingbolt pitch circle diameter is less, the maximum gabarit diameter of integration heap roof construction is greater than the minimum distribution internal diameter of reactor pressure vessel kingbolt assembly 6.This just needs rigidity reducing type synchronize fully bolt stretching machine when by integration heap roof construction, is increased in wide for its support ring Inner footpath; When arriving the operating position of installing kingbolt assembly 6, wide for its support ring Inner footpath being reduced and closing up, mates with the distributing position of kingbolt assembly 6 to realize rigidity reducing type synchronize fully bolt stretching machine.
The support ring that the support ring diameter changing mechanism of this rigidity reducing type synchronize fully bolt stretching machine is divided equally by the equally distributed synchronous bidirectional push rod 1 of N group, 1/N distinguish support ring assembly 2 and hanging holding N lobe the special hanger 3 that the support ring allowing N lobe to divide equally radially wobbles form.
Synchronous bidirectional push rod 1 forms primarily of unit head 11, positive/negative thread screw mandrel 12, guider 13, Connection Block 14 and attachment screw 15.Two ends Connection Block 14 is connected and fixed with corresponding 1/N distinguish support ring assembly 2 respectively by attachment screw 15 and is integrated.Unit head 11 adopts motor 11a to drive, and drives positive/negative thread screw mandrel 12 to rotate, be provided with the nut 14a coordinated with positive/negative thread screw mandrel 12 respectively in Connection Block 14 by worm and gear assembly 11b.When positive/negative thread screw mandrel 12 forward or reverse, nut 14a moves axially along positive/negative thread screw mandrel 12, two ends Connection Block 14 is driven to be separated or close, the rotary encoder 11c coaxial with motor coordinates control and drive system synchronously to realize separating or closing up of 1/N distinguish support ring assembly 2, thus realizes the increase in the wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner or reduce.Guider 13 provides guiding, supports as reaction torque simultaneously.1/N distinguish support ring assembly 2 has the alignment pin 21 of frusto-conical shape and dowel hole 22, when adjacent two lobe support rings near time, lead by alignment pin 21 and dowel hole 22, and realize the accurate radial location of support ring assembly.The increase in the wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner can guarantee rigidity reducing type synchronize fully bolt stretching machine smoothly by reactor pressure vessel integration heap roof construction 5; The wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner reduce the bolt circle diameter matches that can ensure rigidity reducing type synchronize fully bolt stretching machine and top cover of reactor pressure vessel flange.
Special hanger 3 forms primarily of the main suspension ring of support ring suspender 31, suspension rod 32, the equally distributed suspender 33 of N group.The main suspension ring 31 of support ring suspender are connected with reactor building suspension hook 4, realize the lifting action of bolt stretching machine.Suspension rod 32, for lifting by crane each distinguish of stretching-machine, can radially wobble simultaneously, realizes the reducing action in the wide footpath of stretching-machine support ring Inner.
When rigidity reducing type synchronize fully bolt stretching machine is by reactor pressure vessel integration heap roof construction 5, the wide footpath of support ring Inner of rigidity reducing type synchronize fully bolt stretching machine increases.Schematic diagram after the wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner increases as shown in figure 5 a and 5b.Concrete action is: motor 11a rotates forward, positive/negative thread screw mandrel 12 is driven to rotate forward by worm and gear assembly 11b, nut 14a is axially outer mobile along positive/negative thread screw mandrel 12, drive Connection Block 14 along the outwards movement of positive and negative bolt screw axis, two ends Connection Block 14 is driven to do disengaging movement, the angular signal that rotary encoder 11c provides, driving N group 1/N distinguish support ring assembly 2 realize separated in synchronization.The synchronization action of N group synchronous bidirectional push rod 1, realizes the synchronous increase in the wide footpath of support ring Inner of rigidity reducing type synchronize fully bolt stretching machine.
After rigidity reducing type synchronize fully bolt stretching machine is by reactor pressure vessel integration heap roof construction 5, before entering operating position, the wide footpath of support ring Inner of rigidity reducing type synchronize fully bolt stretching machine reduces.Schematic diagram after the wide footpath of rigidity reducing type synchronize fully bolt stretching machine support ring Inner reduces as shown in figures 6 a and 6b.Concrete action is: motor 11a reverses, positive/negative thread screw mandrel 12 is driven to reverse by worm and gear assembly 11b, nut 14a moves inward along positive/negative thread screw mandrel 12 axle, Connection Block 14 is driven to move inward along positive and negative bolt screw axis, two ends Connection Block 14 is driven to make closing movement, the angular signal that rotary encoder 11c provides, the realization of driving N group 1/N distinguish support ring assembly 2 is synchronously closed up.The synchronization action of N group synchronous bidirectional push rod 1, realizes synchronously reducing of the wide footpath of support ring Inner of rigidity reducing type synchronize fully bolt stretching machine.
Explained above is only preferred embodiments of the present invention, its effect facilitates those skilled in the art to understand and implements according to this, certainly the interest field of the present invention can not be limited with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, the scope that the present invention is contained still is belonged to.
Claims (12)
1. for a support ring diameter changing mechanism for rigidity reducing type synchronize fully bolt stretching machine, it is characterized in that: its support ring assembly divided equally by N group equally distributed synchronous bidirectional push rod, the equally distributed support ring assembly of N lobe and hanging holding N lobe the special hanger that the support ring assembly allowing N lobe to divide equally radially wobbles form.Being suspended by holding on N lobe equally distributed support ring assembly under the special hanger radially wobbled can translation folding under the driving of the equally distributed synchronous bidirectional push rod of N group, realizes radial location when N lobe equally distributed support ring assembly assembly closes up by the cooperation of the 1/N distinguish support ring circumference alignment pin of support ring end and 1/N distinguish support ring circumference dowel hole; Above-mentioned N is the integer of 3 to 8;
2., according to claim 1 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the support ring assembly that hanging holding N lobe is divided equally the support ring assembly allowing N lobe to divide equally are piled the main suspension ring of the main suspension hook of factory building and N number of uniform suspension rod doing to radially wobble and the equally distributed suspender of N group at the special hanger radially wobbled by coupled reaction and are formed;
3., according to claim 2 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the suspension rod of special hanger is rigid hanger, and suspension rod can be done to radially wobble;
4., according to claim 2 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, special hanger girder can be circular rigid body, or n-shaped rigid body;
5., according to claim 2 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, N number of uniform suspension rod upper end and the main suspension ring of suspender are with chain connection, and the suspension centre of bottom and support ring is also with chain connection;
6. according to claim 1 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, synchronous bidirectional push rod is by unit head, positive/negative thread screw mandrel, guider, Connection Block and electronic synchronizer controller composition, the support ring assembly that synchronous bidirectional push rod is divided equally by attachment screw and N lobe by two ends Connection Block is connected;
7. according to claim 6 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the unit head of synchronous bidirectional push rod by motor, rotary encoder, worm and gear assembly and drive nut assembly composition;
8., according to claim 6 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the unit head of synchronous bidirectional push rod can drive the Connection Block at synchronous bidirectional push rod two ends to do folding translation when rotating; This folding translation can cause again the 1/N support ring assembly be attached thereto to do folding translation;
9., according to claim 6 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the positive/negative thread screw mandrel two ends of synchronous bidirectional push rod are respectively left-handed and right-handed thread;
10., according to claim 6 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, the guider of synchronous bidirectional push rod is made up of two parallel feed rods;
11. according to claim 7 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, and the motor of synchronous bidirectional push rod is servomotor or stepping motor;
12. according to claim 1 for the support ring diameter changing mechanism of rigidity reducing type synchronize fully bolt stretching machine, and 1/N distinguish support ring circumference alignment pin and 1/N distinguish support ring circumference dowel hole are frusto-conical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366062.4U CN204975942U (en) | 2015-06-01 | 2015-06-01 | A support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520366062.4U CN204975942U (en) | 2015-06-01 | 2015-06-01 | A support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher |
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| Publication Number | Publication Date |
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| CN204975942U true CN204975942U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520366062.4U Withdrawn - After Issue CN204975942U (en) | 2015-06-01 | 2015-06-01 | A support ring reducing mechanism that is used for rigidity reducing formula full synchronizing bolt stretcher |
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| CN (1) | CN204975942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114030974A (en) * | 2021-11-04 | 2022-02-11 | 中广核研究院有限公司 | Reactor main equipment hoisting tool |
-
2015
- 2015-06-01 CN CN201520366062.4U patent/CN204975942U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114030974A (en) * | 2021-11-04 | 2022-02-11 | 中广核研究院有限公司 | Reactor main equipment hoisting tool |
| CN114030974B (en) * | 2021-11-04 | 2024-01-09 | 中广核研究院有限公司 | Hoisting tool for reactor main equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171222 |
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| AV01 | Patent right actively abandoned |