CN106862906B - The dismounting of steam generator manhole cover and positioning device - Google Patents
The dismounting of steam generator manhole cover and positioning device Download PDFInfo
- Publication number
- CN106862906B CN106862906B CN201510915604.3A CN201510915604A CN106862906B CN 106862906 B CN106862906 B CN 106862906B CN 201510915604 A CN201510915604 A CN 201510915604A CN 106862906 B CN106862906 B CN 106862906B
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- China
- Prior art keywords
- manhole cover
- manhole
- guide rod
- thread bush
- section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention belongs to nuclear power service technique field, a kind of steam generator manhole cover dismounting and positioning device are specifically disclosed.It includes across manhole cover, the guide rod being fixedly connected with manhole collar, and the thread bush being sleeved on outside guide rod；There is the sleeve of threaded hole centered on the thread bush, cartridge exterior processing step is equipped with bearing on step, and for bearing holder (housing, cover) outside screw thread set upper side, bearing upper end withstands on the lower surface of manhole cover；Part more than thread bush step is located in the manhole of manhole cover, and is sleeved on outside guide rod.It is supported by manhole collar's inherent structure, guide rod is protruded into the bolt hole of manhole cover, using the gravity of manhole cover itself, make it along guide rod slide downward；Guide rod is connect by screw thread with manhole collar, and the rotation of screw thread is so that manhole cover glides or rises controllable；The limiting section for designing thread bush lower end simultaneously defines the position that manhole cover glides, prevents operation from causing danger.
Description
Technical field
The invention belongs to nuclear power service technique fields, and in particular to a kind of dismounting and positioning of steam generator manhole cover
Device.
Background technique
For the convenience for guaranteeing maintenance, primary side of steam generator ball head design has manhole obliquely, manhole cover quality
Generally above 200kg, and limited by space and position, dismounting and the positioning of bolt hole are all inconvenient.Traditional manhole cover
Dismantling device has chain block, manhole cover elevator etc., and often structure is complicated, and price is high, is easy to happen accident, and do not have
Bolt hole positioning function.Design simple one kind, the dismounting of labour-saving manhole cover and service work of the positioning tool to steam generator
It is extremely important.
Summary of the invention
The object of the present invention is to provide a kind of disassembly of steam generator manhole cover and positioning devices, when steam generator is primary
Side maintenance is when needing to open manhole, dismounting manhole that can be efficient, convenient, safe by the present apparatus.
Technical scheme is as follows:
A kind of dismounting of steam generator manhole cover and positioning device, including passing through manhole cover, being fixedly connected with manhole collar
Guide rod, and the thread bush being sleeved on outside guide rod；There is the sleeve of threaded hole centered on the thread bush, cartridge exterior adds
Work step is equipped with bearing on step, and for bearing holder (housing, cover) outside screw thread set upper side, bearing upper end withstands on the lower surface of manhole cover；
Part more than the thread bush step is located in the manhole of manhole cover, and is sleeved on outside guide rod.
In above-mentioned steam generator manhole cover dismounting and positioning device: the guide rod includes manhole cover sliding section
And fixed section；The fixed section is screwed with manhole collar；The manhole cover slides Duan Weiyi sections of smooth round bars, described
Thread bush is sleeved on outside the manhole cover sliding section.
In above-mentioned steam generator manhole cover dismounting and positioning device: the thread bush lower end is equipped with driving lever.
In above-mentioned steam generator manhole cover dismounting and positioning device: the guide rod further includes being located at lower end
Spanner acting section, section are hexagon or square.
In above-mentioned steam generator manhole cover dismounting and positioning device: the screw thread set upper side overall diameter d compares people
Small 1~the 2mm of port lid diameter of bolt hole.
Remarkable result of the invention is as follows: it is simple, light, economical, it is supported by manhole collar's inherent structure, by guide rod
It protrudes into the bolt hole of manhole cover, using the gravity of manhole cover itself, makes it along guide rod slide downward；Guide rod is logical
It crosses screw thread to connect with manhole collar, the rotation of screw thread is so that manhole cover glides or rises controllable；Thread bush lower end is designed simultaneously
Limiting section defines the position that manhole cover glides, prevents operation from causing danger.
Further, it is connected through a screw thread installation thread bush in the rear end of guide rod, driving lever is fixedly mounted on thread bush, led to
Crossing rotating lever makes thread bush outside guiding rod rear end, moves axially along guide rod, further limits manhole cover downslide
Position.Screw-driven ensure that mobile accuracy, while ensure that will not in manhole cover moving process for the intrinsic rigidity being oriented to
It deflects.
Without being equipped with electric device, hydraulic mechanism, pulley blocks.
The positioning between manhole cover and manhole collar's bolt hole has been effectively ensured in the present invention, and manhole cover does not produce in slipping
Raw rotation, manhole cover axis are protected before and after manhole cover is mobile with manhole collar's axis, manhole cover bolt hole and manhole collar's bolt hole
It holds coaxial.
Detailed description of the invention
Fig. 1 is the dismounting of steam generator manhole cover and positioning device schematic diagram of the invention；
Fig. 2 is guide rod schematic diagram；
Fig. 3 is thread bush schematic diagram；
In figure: 1. manhole collars；2. guide rod；3. manhole cover；4. thread bush；5. driving lever；6. bearing；401. guide part；
402. limiting section.
Specific embodiment
Below by the drawings and the specific embodiments, the invention will be further described.
As shown in Figure 1, the upper end of guide rod 2 is by being threadably mounted on manhole collar 1, and guide rod 2 passes through manhole cover 3
Bolt hole.
4 sets of thread bush outside guide rod 2, and the guide part of the upper end of thread bush 4 also passes through the manhole of manhole cover 3.It can
Driving lever 5 is installed on the limiting section of the lower end of thread bush 4, convenient for rotation thread bush 4.
The material of above-mentioned all parts can use carbon steel, stainless steel or steel alloy.
As shown in Fig. 2, guide rod 2 is by three Duan Zucheng, spanner acting section 201, manhole cover sliding section 202 and fixed section 203.
Screw thread is processed outside fixed section 203, can be screwed with manhole collar 1；
Manhole cover sliding section 202 can guarantee that manhole cover 3 axially slides along guide rod, not depart from guide rod 2；
The section of spanner acting section 201 is hexagon or square, to guide rod 2 of tightening or come loose by spanner.
As shown in figure 3, thread bush 4 is the sleeve that there is threaded hole at a center, cartridge exterior processing step is rectangular on step
It is limiting section 402 below step at guide part 401.
Bearing 6 is installed on step, 6 upper end of bearing withstands on the lower surface of manhole cover 3, the limiting section 402 below step
It is machined with screw hole, can be along perpendicular to 4 axially direction processing screw hole of thread bush, screw hole is interior to install driving lever 5.
Be L2 by the distance definition for arriving bearing upper surface at the top of thread bush 4, by the upper surface of bearing 6 to screw hole axis away from
From L3 is defined as, the overall diameter of step limiting section below is defined as D.The overall diameter of the guide part of 4 upper end of thread bush is d.
In the present embodiment
L2 size is the 1/2~1 of manhole cover thickness, provides the guiding distance that enough manhole covers 3 are dismantled；
D is 1~2mm smaller than manhole cover diameter of bolt hole；
D having a size of
L3 is 30~50mm；
One end of driving lever 5 has external screw thread, and the end and above-mentioned screw hole are installed, and the outer surface annular knurl of driving lever 5 is rubbed with increasing
Wipe power.Driving lever 5 can circumferentially be uniformly distributed to be multiple in thread bush 4.
The course of work is as follows:
When manhole cover is dismantled, two groups of manhole cover dismounting and positioning device can be used, guide rod 2 is tightened, driving lever 5 is mounted in
On thread bush 4, thread bush 4 is rotated into suit from the lower end of guide rod 2 respectively, stirs thread bush 4 clockwise, until bearing 6
End face is withstood on 3 lower surface of manhole cover, and 4 guide part 401 of thread bush enters manhole cover bolt hole at this time, when remaining manhole stud is complete
After portion removes, manhole cover 3 is close to 4 outer wall of thread bush under the effect of gravity and is moved down, and is detached from manhole collar 1.
When manhole cover assembles, the thread bush 4 outside guide rod 2 is stirred, manhole cover 3 is under the promotion of thread bush 4 along guide rod
It moves up, until its upper surface and manhole collar 1 seal face contact, since guide rod 2 is rigid material, and 4 upper end of thread bush
Overall diameter d is 1~2mm smaller than manhole cover diameter of bolt hole；It can guarantee well between manhole collar's bolt hole, manhole cover bolt hole
Concentricity, the preferable positioning realized between manhole cover 3 and manhole collar 1.
Claims (4)
1. a kind of steam generator manhole cover dismounting and positioning device, it is characterised in that: it includes across manhole cover and manhole collar
The guide rod (2) being fixedly connected, and it is sleeved on the thread bush (4) of guide rod (2) outside；Have centered on the thread bush (4)
The sleeve of threaded hole, cartridge exterior processing step, step top form guide part (401), are below step limiting section (402)；
Limiting section (402) is machined with screw hole；Bearing (6) are equipped on step, bearing (6) is sleeved on outside thread bush (4) upper end, bearing
(6) upper end withstands on the lower surface of manhole cover (3)；Part more than described thread bush (4) step is located at the bolt hole of manhole cover
It is interior, and it is sleeved on guide rod (2) outside；
The guide rod (2) includes manhole cover sliding section (202) and fixed section (203)；The fixed section (203) and manhole
Seat is fixed；Manhole cover sliding section (202) is one section of smooth round bar, and the thread bush (4) is sleeved on the manhole
Lid sliding section (202) is outside；
Thread bush (4) lower end is equipped with driving lever (5).
2. steam generator manhole cover dismounting as described in claim 1 and positioning device, it is characterised in that: the guide rod
It (2) further include the spanner acting section (201) for being located at lower end, section is hexagon or square.
3. steam generator manhole cover dismounting as described in claim 1 and positioning device, it is characterised in that: the thread bush
(4) overall diameter d in upper end is 1~2mm smaller than manhole cover diameter of bolt hole.
4. steam generator manhole cover dismounting as described in claim 1 and positioning device, it is characterised in that: the thread bush
The distance of 4 tops to bearing upper surface is the 1/2~1 of manhole cover thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915604.3A CN106862906B (en) | 2015-12-10 | 2015-12-10 | The dismounting of steam generator manhole cover and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915604.3A CN106862906B (en) | 2015-12-10 | 2015-12-10 | The dismounting of steam generator manhole cover and positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106862906A CN106862906A (en) | 2017-06-20 |
| CN106862906B true CN106862906B (en) | 2019-06-18 |
Family
ID=59177064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510915604.3A Active CN106862906B (en) | 2015-12-10 | 2015-12-10 | The dismounting of steam generator manhole cover and positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106862906B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363777B (en) * | 2017-07-20 | 2019-02-26 | 中国核动力研究设计院 | For steam generator Manhole Sealing Joints gasket and the dismantling device of gasket pressing plate |
| CN114800388B (en) * | 2022-05-24 | 2023-09-22 | 中广核核电运营有限公司 | Dismounting device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100716560B1 (en) * | 2006-11-24 | 2007-05-10 | 현대주철산업 주식회사 | Structure for joining outer cover and inner cover of manhole |
| CN202138505U (en) * | 2011-05-05 | 2012-02-08 | 江苏熔盛重工有限公司 | Fireproof manhole cover |
| CN203322253U (en) * | 2013-05-30 | 2013-12-04 | 中国昆仑工程公司 | Manhole structure |
| CN203822808U (en) * | 2014-01-04 | 2014-09-10 | 平湖市欣业标准件制造有限公司 | Shoulder nut for locking automobile tire shaft |
| CN103933749B (en) * | 2014-03-31 | 2016-06-29 | 无锡金瑞特防腐设备有限公司 | Packing sealing evaporator |
| CN205437731U (en) * | 2015-12-10 | 2016-08-10 | 核动力运行研究所 | Dismouting of steam generator manhole cover and positioner |
-
2015
- 2015-12-10 CN CN201510915604.3A patent/CN106862906B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106862906A (en) | 2017-06-20 |
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