CN205989154U - The device of circularity is kept during large-scale cylindrical member housing downhand welding - Google Patents
The device of circularity is kept during large-scale cylindrical member housing downhand welding Download PDFInfo
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- CN205989154U CN205989154U CN201620888144.XU CN201620888144U CN205989154U CN 205989154 U CN205989154 U CN 205989154U CN 201620888144 U CN201620888144 U CN 201620888144U CN 205989154 U CN205989154 U CN 205989154U
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- strut
- screw mandrel
- nut
- support rod
- cylindrical member
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Abstract
The utility model discloses keeping the device of circularity during a kind of large-scale cylindrical member housing downhand welding, including a screw mandrel, screw mandrel is arranged along housing axis, and screw mandrel is provided with multigroup support rod mechanism, and multigroup support rod mechanism, all centered on screw mandrel, is radially arranged；Described support rod mechanism includes fixed seat, nut, rotary screw, nut moves along screw mandrel to fixed seat direction, second strut promotes the first strut, first strut promotes the 4th strut, the 5th strut close to housing, briquetting is pressed on shell inner surface, and support rod mechanism is issued to self-locking state in the 3rd strut effect.This utility model compact conformation, easy to operate, reduce production cost, improve the quality of production of large-scale cylindrical member housing it is achieved that the fast-holding of frock and locking, improve the intensity of screw mandrel and strut simultaneously.
Description
Technical field
This utility model is related to large-scale cylindrical member case weld field, more particularly, to a kind of large-scale cylindrical member housing downhand welding
The device of circularity is kept in journey.
Background technology
During large-scale cylindrical member housing downhand welding, because weld metal zone is under the influence of high temperature and gravity, create deformation
It sink it is difficult to ensure the circularity requirement of housing, reduce production efficiency and the quality of production of housing.In production practices, need to adopt
With certain positioning compression frock, prevent distorting sag, improve housing circularity.
Hydraulic pressure common in the art and electrical equipment hold round frock, complex structure, and relatively costly it is impossible to realize self-locking,
Do not enable quick acting and locking.
Utility model content
The purpose of this utility model be solve case weld during weld metal zone be deformed sink it is difficult to ensure housing
The problem that circularity requires, keeps the device of circularity during providing a kind of large-scale cylindrical member housing downhand welding.
For realizing above-mentioned utility model purpose, the technical solution of the utility model is：A kind of large-scale cylindrical member housing downhand welding
During keep the device of circularity it is characterised in that including screw mandrel 2, screw mandrel 2 arranges along housing 1 axis to be welded, screw mandrel 2 sets
There is multigroup support rod mechanism 3, multigroup support rod mechanism 3, all centered on screw mandrel 2, is radially arranged；
Described support rod mechanism 3 includes fixed seat 301, and fixed seat 301 is sleeved on described screw mandrel 2, described fixed seat 301
Nut 302 is threaded with the screw mandrel 2 of side, screw mandrel 2 rotates, nut 302 moves along screw mandrel 2 axis direction；
First strut 303 is connected with described fixed seat, described nut 302 is connected with the second strut 304, the second strut
On first pin joint 3031 of the 304 non-ends being hinged on described first strut 303, the first strut 303 leans on subterminal second
Pin joint 3032 is hinged with the 4th strut 306, and the 3rd pin joint 3041 of the non-end of described second strut 304 is hinged with the 3rd support
Bar 305, the 3rd strut 305 end is hinged with the 5th strut 307, and the end of described first strut 303 is hinged on the 5th strut 307
The 4th pin joint 3071 of non-end on；
Described first pin joint 3031, the 3rd pin joint 3041, the 4th pin joint 3071, the 3rd strut 305 and the 5th support
Bar 307 pin joint, 4 points of composition one parallelogrames；Described 4th strut 306, the 5th strut 307 be arranged in parallel；
Described 4th strut 306, the end of the 5th strut 307 are provided with briquetting 308；
Rotary screw 2, nut 302 moves along screw mandrel 2 to fixed seat 301 direction, and the second strut 304 promotes the first strut
303, the first strut 303 promotion the 4th strut 306, the 5th strut 307 are close to housing 1 to be welded, and described briquetting 308 is pressed on to be treated
Weldering housing 1 inner surface, support rod mechanism 3 is issued to self-locking state in the 3rd strut 305 effect.
As one kind of the present utility model preferably, described briquetting 308 is specifically arranged in the weld seam 101 on housing 1 to be welded
Both sides.
As another kind of the present utility model preferably, it is transversal that described multigroup support rod mechanism 3 is arranged at same housing to be welded 1
Face, multigroup support rod mechanism 3 shares 301, nut 302 of a fixed seat simultaneously, and multigroup support rod mechanism 3 stress is equal and direction
On the contrary, screw mandrel 2 force in radial is zero.
Further, described screw mandrel 2 side is provided with a nut guide rod 4, and nut guide rod 4 is be arranged in parallel with screw mandrel 2, and nut is led
Bar 4 is provided with sliding sleeve 402 and is connected with described nut 302 by guide link 401, and screw mandrel 2 rotates, and nut 302 is in guide link
401 traction lower edge screw mandrel 2 is mobile.
Further, described screw mandrel 2 is provided with positive stop 201, and positive stop 201 is located at fixed seat 301 place nut 302
The opposite side of side.
Further, described screw mandrel 2 one end is provided with the rotary handle 202 for rotary screw 2.
Further, described screw mandrel 2 is arranged on fixed support 5 by conical bearing 203.
The beneficial effects of the utility model are：
1st, compared to hydraulic pressure with electrically hold round frock, this utility model compact conformation, easy to operate, reduce production cost,
Improve the quality of production of large-scale cylindrical member housing.
2nd, neatly use transmission and the auto-lock function of sliding screw, and combine parallel-crank mechanism it is achieved that work
The fast-holding of dress and locking, improve the intensity of screw mandrel and strut simultaneously.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is 5 points of support schematic diagrams in this utility model embodiment；
Fig. 3 is this utility model support rod mechanism geometrical relationship schematic diagram.
Specific embodiment
Below in conjunction with accompanying drawing, the technical scheme in this utility model embodiment is clearly and completely described.
As shown in figure 1, keeping the device of circularity during a kind of large-scale cylindrical member housing downhand welding, including screw mandrel 2, screw mandrel 2
Along the setting of housing 1 axis, screw mandrel 2 is provided with ten groups of support rod mechanisms 3, ten groups of support rod mechanisms 3 all centered on screw mandrel 2, in radiation
Shape is arranged.
In the present embodiment, as shown in Fig. 2 taking the downhand welding of shield machine housing as a example, including the housing 1 of shield machine, housing 1 is
Cylindrical shape, housing 1 has the weld seam 101 along generatrix direction, and housing 1 is provided with a weld seam 101, takes two simultaneously to housing
End is compressed, and one end, under the premise of meeting balance and stability, is supported using 5 points, and now supporting construction is optimum.
Described support rod mechanism 3 includes fixed seat 301, and fixed seat 301 is sleeved on described screw mandrel 2, described fixed seat 301
Nut 302 is threaded with the screw mandrel 2 of side, screw mandrel 2 rotates, nut 302 moves along screw mandrel 2 axis direction.
First strut 303 is connected with described fixed seat, described nut 302 is connected with the second strut 304, the second strut
On first pin joint 3031 of the 304 non-ends being hinged on described first strut 303, the first strut 303 leans on subterminal second
Pin joint 3032 is hinged with the 4th strut 306, and the 3rd pin joint 3041 of the non-end of described second strut 304 is hinged with the 3rd support
Bar 305, the 3rd strut 305 end is hinged with the 5th strut 307, and the end of described first strut 303 is hinged on the 5th strut 307
The 4th pin joint 3071 of non-end on；
Described first pin joint 3031, the 3rd pin joint 3041, the 4th pin joint 3071, the 3rd strut 305 and the 5th support
Bar 307 pin joint, 4 points of composition one parallelogrames；Described 4th strut 306, the 5th strut 307 be arranged in parallel；
Described 4th strut 306, the end of the 5th strut 307 are provided with briquetting 308；
Rotary screw 2, nut 302 moves along screw mandrel 2 to fixed seat 301 direction, and the second strut 304 promotes the first strut
303, the first strut 303 promotion the 4th strut 306, the 5th strut 307 are close to housing 1, and described briquetting 308 is pressed on housing 1
Inner surface, support rod mechanism 3 is issued to self-locking state in the 3rd strut 305 effect.
Realize compression and self-locking for realizing support rod mechanism 3, need each stay length and articulated manner are designed, design
Method is as follows：
Because five fulcrum rod structures are identical, as shown in figure 3, now taking a support rod mechanism structure to be analyzed；
Step 1：Determine the first strut 303, the second strut 304, the 3rd strut 305, the 4th strut 306, the 5th strut 307
Length.
By five strut bars by hinge node division be l1、l2、l3、l4、l5、l6、l7、l8.
(1)l1、l2、、l4、l5、l6、l7The determination of length
Intend taking l1=1620mm, l2=1570mm, l4=450mm, l5=400mm, l6=700mm will be capable of compression support
Circle effect, by geometrical relationship：
?：
l7=610mm
In this embodiment, two parts support rod mechanism 3 is oppositely arranged, when support rod mechanism 3 launches or packs up, for preventing both sides
Strut interferes collision it is ensured that on briquetting 308 compression housing 1 inner surface, also needing to meet in motor process：
l1+l4+l5+l6＜ l1+l2
In formula：L0Half for the screw mandrel length between the fixed seat of two parts support rod mechanism；L is shield machine housing axial direction
Length.
And above-mentioned bar node length is satisfied by：
l1+l4+l5+l6＜ l1+l2
Therefore take l1=1620mm, l2=1570mm, l4=450mm, l5=400mm, l6=700mm, l7=610mm
(2)l3、l8The determination of length
Obtained by parallelogram relation：
Thus can determine that the first strut 303 length be 2470mm, the second strut 304 length be 1570mm, the 3rd strut 305
Length is 850mm, the 4th strut 306 length is 610mm, the 5th strut 307 length is 1310mm.
Step 2：Determine impulse stroke X of nut 302.
Impulse stroke X needs to meet：
On the premise of meeting job requirement, reduce impulse stroke X, the E point on screw mandrel 2 can be installed by positive stop 201,
It is also possible to prevent nut 302 excessively mobile, support rod mechanism 3 is interfered with screw mandrel simultaneously.Determine better E point position, you can determine work
Make stroke X.Therefore can use X=450mm.
Step 3：Determine screw mandrel 2 helical pitch S
(1) determine nut 302 from initial position E to impaction state C1Required rotary handle 202
Rotate number of turns N, take N=10, then screw mandrel 2 helical pitch S is：
S=zp=X/N=45mm
In formula：Using single thread, then z=1.
Check support rod mechanism condition of self-locking：
5.9 ° of ρ=arctanf ≈
In formula：λ is lead angle, d2For wire rod thread central diameter value, take 150mm, ρ is angle of friction, u is coefficient of friction, takes u
=0.1, β are the included angle of thread, and this utility model adopts trapezoidal thread β=30 °
λ and ρ being tried to achieve by above-mentioned formula, meets condition of self-locking：
λ ＜ ρ
λ ＜ ρ
Therefore, support rod mechanism 3 is in C1It is capable of at point compressing housing 1, and self-locking.
In the present embodiment, support rod mechanism 3 is divided into two parts arrangement, every five groups of support rod mechanisms 3 of part, five groups of support rod mechanisms
3 are arranged at same housing 1 cross section, and five groups of support rod mechanisms 3 share 301, nut 302 of a fixed seat, five groups of supports simultaneously
Linkage 3 stress is equal and in opposite direction, and screw mandrel 2 force in radial is zero.Every part, first group of support rod mechanism 3 is arranged at weldering
Stitch on 101 relative housing 1 inner surfacies, second group, third component is not arranged on apart from 90 degree clockwise of weld seam 101, counterclockwise
In 90 degree of shell inner surface, the 4th group, BSA is not arranged at the about 8cm of weld seam 101 both sides.
Described screw mandrel 2 side is provided with a nut guide rod 4, and nut guide rod 4 is be arranged in parallel with screw mandrel 2, and nut guide rod 4 is provided with
Sliding sleeve 402 is connected with described nut 302 by guide link 401, and screw mandrel 2 rotates, and nut 302 is in the traction of guide link 401
Lower edge screw mandrel 2 is mobile.
Described screw mandrel 2 one end is provided with the rotary handle 202 for rotary screw 2.
Described screw mandrel 2 is arranged on fixed support 5 by conical bearing 203.
By rotary handle 202, nut 302 is made to move in impulse stroke X, and in C1During point, support rod mechanism 3 compresses shell
Body self-locking, keep the stability in welding process, compress housing simultaneously, prevent its deformation.
Described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art obtained under the premise of not making creative work all its
His embodiment, broadly falls into the scope of this utility model protection.
Claims (7)
1. keep the device of circularity during a kind of large-scale cylindrical member housing downhand welding it is characterised in that including screw mandrel (2), screw mandrel
(2) arrange along housing to be welded (1) axis, screw mandrel (2) is provided with multigroup support rod mechanism (3), and multigroup support rod mechanism (3) is all with screw mandrel
(2), centered on, radially arrange；
Described support rod mechanism (3) includes fixed seat (301), and fixed seat (301) is sleeved on described screw mandrel (2), described fixed seat
(301) it is threaded with nut (302) on the screw mandrel (2) of side；
First strut (303) is connected with described fixed seat, described nut (302) is connected with the second strut (304), the second strut
(304) it is hinged on first pin joint (3031) of non-end of described first strut (303), the first strut (303) is near end
Second pin joint (3032) at end is hinged with the 4th strut (306), the 3rd pin joint of the non-end of described second strut (304)
(3041) it is hinged with the 3rd strut (305), the 3rd strut (305) end is hinged with the 5th strut (307), described first strut
(303) end is hinged on the 4th pin joint (3071) of the non-end of the 5th strut (307)；
Described first pin joint (3031), the 3rd pin joint (3041), the 4th pin joint (3071), the 3rd strut (305) and the
Five struts (307) pin joint, 4 points of composition one parallelogrames；Described 4th strut (306), the 5th strut (307) is parallel sets
Put；
Described 4th strut (306), the end of the 5th strut (307) are provided with briquetting (308).
2. keep the device of circularity during large-scale cylindrical member housing downhand welding according to claim 1 it is characterised in that institute
State the both sides that briquetting (308) is specifically arranged in the upper weld seam (101) of housing to be welded (1).
3. during large-scale cylindrical member housing downhand welding according to claim 1 keep circularity device it is characterised in that
Described multigroup support rod mechanism (3) is arranged at same housing to be welded (1) cross section, and multigroup support rod mechanism (3) shares one admittedly simultaneously
Reservation (301), a nut (302), multigroup support rod mechanism (3) stress is equal and in opposite direction, and screw mandrel (2) force in radial is
Zero.
4. keep the device of circularity during large-scale cylindrical member housing downhand welding according to claim 1 it is characterised in that institute
State screw mandrel (2) side and be provided with a nut guide rod (4), nut guide rod (4) is be arranged in parallel with screw mandrel (2), and nut guide rod (4) is provided with
Sliding sleeve (402) is connected with described nut (302) by guide link (401), and screw mandrel (2) rotates, and nut (302) is in guide link
(401) traction lower edge screw mandrel (2) is mobile.
5. keep the device of circularity during large-scale cylindrical member housing downhand welding according to claim 1 it is characterised in that institute
State screw mandrel (2) and be provided with positive stop (201), positive stop (201) is located at fixed seat (301) place nut (302) side
Opposite side.
6. keep the device of circularity during large-scale cylindrical member housing downhand welding according to claim 1 it is characterised in that institute
State screw mandrel (2) one end and be provided with the rotary handle (202) for rotary screw (2).
7. keep the device of circularity during large-scale cylindrical member housing downhand welding according to claim 1 it is characterised in that institute
State screw mandrel (2) to be arranged on fixed support (5) by conical bearing (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620888144.XU CN205989154U (en) | 2016-08-16 | 2016-08-16 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620888144.XU CN205989154U (en) | 2016-08-16 | 2016-08-16 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
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| Publication Number | Publication Date |
|---|---|
| CN205989154U true CN205989154U (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620888144.XU Expired - Fee Related CN205989154U (en) | 2016-08-16 | 2016-08-16 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
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| CN (1) | CN205989154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112374A (en) * | 2016-08-16 | 2016-11-16 | 福建工程学院 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
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2016
- 2016-08-16 CN CN201620888144.XU patent/CN205989154U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112374A (en) * | 2016-08-16 | 2016-11-16 | 福建工程学院 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
| CN106112374B (en) * | 2016-08-16 | 2017-09-29 | 福建工程学院 | The device of circularity is kept during large-scale cylindrical member housing downhand welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180503 Address after: No. 205, Longxiang Road, Jianyang District, Nanping, Fujian Patentee after: FUJIAN JIANYANG LUNGCHEUNG SCIENCE & TECHNOLOGY Co.,Ltd. Address before: No. 3, School Park Road, new area of Fuzhou University, Fujian Province Patentee before: Fujian University of Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 |