CN205342335U - A axial alignment and fixing device for narrow tube butt welding usefulness - Google Patents

A axial alignment and fixing device for narrow tube butt welding usefulness Download PDF

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Publication number
CN205342335U
CN205342335U CN201620011588.5U CN201620011588U CN205342335U CN 205342335 U CN205342335 U CN 205342335U CN 201620011588 U CN201620011588 U CN 201620011588U CN 205342335 U CN205342335 U CN 205342335U
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China
Prior art keywords
plate
fixing
groove
axial alignment
shifting
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CN201620011588.5U
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Chinese (zh)
Inventor
谢彦武
徐建梅
李�远
郑明涛
王永明
黄倩影
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Harbin Electric Group (qinhuangdao) Heavy Equipment Co Ltd
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Harbin Electric Group (qinhuangdao) Heavy Equipment Co Ltd
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Priority to CN201620011588.5U priority Critical patent/CN205342335U/en
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Abstract

The utility model discloses an axial alignment and fixing device for narrow tube butt welding usefulness, the device include first connecting plate (1), second connecting plate (2), connecting axle, stir (4), backing pin (7), the first trough (12), second groove (22), first clamp plate (11) and second clamp plate (21), and wherein, the connecting axle is used for location and direction first connecting plate (1) and second connecting plate (2), it is used for realizing second connecting plate (2) axial direction removal along the connecting axle to stir (4) to on first connecting plate (1), stir (4) and carry on spacingly through backing pin (7), the inseparable centre gripping to the narrow tube is realized with first clamp plate (11) cooperation, second groove (22) with second clamp plate (21) cooperation in the first trough (12), the utility model provides an axial alignment and fixing device structure are small and exquisite, can realize not hindering welding operation in the operation of carrying on in narrow and small space, and simultaneously, novel structure makes simply, with low costs.

Description

A kind of axial alignment for narrow tube butt welding and fixing device
Technical field
This utility model relates to a kind of centering, positioner, particularly relates to the device that a kind of axial alignment for narrow tube butt welding positions.
Background technology
The heat exchange unit key component of temperature gas cooled reactor steam generator is spiral coil, single group spiral coil is made up of five layers of tube bank, every layer of tube bank has many heat exchanger tubes, arrange in group's property, interlamellar spacing and tube pitch are all less, single heat exchange tube is formed by the tube butt welding of two kinds of unlike materials, and its butt welding belongs to different steel weld, and is all-position welding.Owing to butt end is the free end that spiral coil bends shaping, the two ends heat exchanger tube axiality that need to dock is poor, and during this kind of dissimilar steel heat exchange tube docking, it is desirable to the heat exchanger tube of two ends docking has significantly high axiality, and pipe end distance is also had high requirements.Therefore, when carrying out butt welding of dissimilar steel heat exchange tube in small space, how to complete two ends heat exchanger tube axial alignment and the fixing difficult problem becoming in steam generator heat exchange unit manufacture process.
Utility model content
In order to overcome the problems referred to above, present inventor has performed and study with keen determination, design a kind of axial alignment for narrow tube butt welding and fixing device.
Specifically, the purpose of this utility model is in that to provide following aspect:
(1) a kind of axial alignment for narrow tube butt welding and fixing device, it is characterized in that, described axial alignment and fixing device include first connecting plate the 1, second connecting plate 2, connection axle, fluctuation part 4 and the first pressing plate 11 and the second pressing plate 21, wherein
First connecting plate 1 and the second connecting plate 2 connect by connecting axle,
Shifting part 4 is connected through the first connecting plate and the second connecting plate 2, is used for driving the second connecting plate 2 to move up and down thus closer or far from the first connecting plate,
First pressing plate is installed on the first connecting plate, for clamping narrow tube 8 to be welded,
Second pressing plate is installed on the second connecting plate, for clamping another root narrow tube 8 to be welded;
(2) axial alignment according to above-mentioned (1) and fixing device, it is characterised in that
Described connection axle is bearing pin (3),
Right side opening at described first connecting plate 1 is provided with mean for the pin-and-hole 5 of bearing pin 3 traverse,
Right side opening at described second connecting plate 2 is provided with mean for the pin-and-hole 5 of bearing pin 3 traverse,
Described pin-and-hole (5) is axially in parallel;
(3) axial alignment according to above-mentioned (2) and fixing device, it is characterised in that
Described bearing pin 3 sequentially passes through the pin-and-hole 5 of the first connecting plate 1 and the pin-and-hole 5 of the second connecting plate 2, thus the first connecting plate 1 and the second connecting plate 2 are positioned and led, described bearing pin 3 is two or more;
(4) axial alignment according to above-mentioned (3) and fixing device, it is characterised in that be connected for interference fit between described bearing pin 3 with the first connecting plate 1, be connected for matched in clearance between described bearing pin 3 with the second connecting plate 2;
(5) axial alignment according to above-mentioned (1)~(4) and fixing device, it is characterised in that
Described shifting part 4 is screwed rod-like element, such as screw or bolt,
First connecting plate 1 offers the through hole for shifting part 4 traverse, is connected for matched in clearance between shifting part 4 with the first connecting plate 1,
Second connecting plate 2 offers the screwed hole 6 that the screw thread with shifting part 4 matches, is threaded engagement between described fluctuation part 4 and the second connecting plate 2;
(6) axial alignment according to above-mentioned (5) and fixing device, it is characterised in that perforate in the through hole hole wall for shifting part 4 traverse of the first connecting plate 1, is wherein equipped with for the backing pin 7 that shifting part 4 is spacing;
(7) axial alignment according to above-mentioned (1) and fixing device, it is characterised in that
The first groove 12 and the second groove 22 for clamping narrow tube 8 is offered respectively in the left side in the left side of described first connecting plate 1 Yu described second connecting plate 2;
(8) axial alignment according to above-mentioned (7) and fixing device, it is characterized in that, described first groove 12 and the second groove 22 are V-groove, described first groove 12 includes the first left tilted surface and the first right tilted surface, described second groove 22 includes the second left tilted surface 221 and the second right tilted surface 222, wherein
First left tilted surface of described first groove 12 and the second left tilted surface 221 of the second groove 22 are coplanar,
First right tilted surface of described first groove 12 and the second right tilted surface 222 of the second groove 22 are coplanar;
(9) axial alignment according to above-mentioned (8) and fixing device, it is characterised in that
Described first pressing plate 11 is fixed on the first connecting plate 1 by the first connector 111,
Described second pressing plate 21 is fixed on the second connecting plate 2 by the second connector 211;
(10) axial alignment according to above-mentioned (8) or (9) and fixing device, it is characterised in that
Between the first pressing plate 11 and the first connecting plate 1, the first connector 111 is arranged with the first spring;
Between the second pressing plate 21 and the second connecting plate 2, the second connector 211 is arranged with the second spring;
Described first connector 111 and the second connector 211 are bolt.
This utility model is had the advantage that to include:
(1) this device adopts multiple bearing pin guide-localizations, adopts groove with the dual fixing of pressing plate, narrow tube to be clamped so that tube bank accuracy of alignment is high simultaneously;
(2) this device adopts screwed shifting part to achieve the adjustment in pipe end gap, can meet the different requirements connecing welded gaps;
(3) this device adopts spring, and welding end rear spring can flick, thus facilitating device to remove from tube bank;
(4) this apparatus structure is small and exquisite, it is possible to realizes carrying out operation at small space, does not interfere with welding operation;
(5) this apparatus structure is novel, and manufacture is simple, cost is low.
Accompanying drawing explanation
Fig. 1 illustrates the top view of the axial alignment according to a kind of preferred implementation of this utility model and fixing device;
Fig. 2 illustrates the front view of the axial alignment according to a kind of preferred implementation of this utility model and fixing device.
Drawing reference numeral illustrates:
1-the first connecting plate;
11-the first pressing plate;
111-the first connector;
12-the first groove;
2-the second connecting plate;
21-the second pressing plate;
211-the second connector;
2111-the second spring;
22-the second groove;
221-the second left tilted surface;
222-the second right tilted surface;
3-bearing pin;
4-shifting part;
5-pin-and-hole;
6-screwed hole;
7-backing pin;
8-narrow tube.
Detailed description of the invention
Below by drawings and Examples, this utility model is further described.Being illustrated by these, feature of the present utility model and advantage will become more apparent from clearly.
Word " exemplary " special here means " as example, embodiment or illustrative ".Here should not necessarily be construed as preferred or advantageous over other embodiments as any embodiment illustrated by " exemplary ".Although the various aspects of embodiment shown in the drawings, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
A kind of axial alignment for narrow tube butt welding provided according to this utility model and fixing device, such as Fig. 1, shown in Fig. 2, described axial alignment and fixing device include the first connecting plate 1, second connecting plate 2, connect axle, shifting part 4 and the first pressing plate 11 and the second pressing plate 21, first connecting plate 1 and the second connecting plate 2 connect by connecting axle, shifting part 4 is connected through the first connecting plate and the second connecting plate 2, move up and down thus closer or far from the first connecting plate for driving the second connecting plate 2, first pressing plate is installed on the first connecting plate, for clamping narrow tube 8 to be welded, second pressing plate is installed on the second connecting plate, for clamping another root narrow tube 8 to be welded;Wherein, described connection axle is bearing pin 3, and described shifting part 4 is screwed rod-like element, such as screw or bolt.Right side opening at described first connecting plate 1 is provided with mean for the pin-and-hole 5 of bearing pin 3 traverse, and the right side opening at described second connecting plate 2 is provided with mean for the pin-and-hole 5 of bearing pin 3 traverse, and wherein, described pin-and-hole is axially in parallel, and two pin-and-holes for same bearing pin traverse are coaxial;Described bearing pin 3 sequentially passes through the pin-and-hole 5 of the first connecting plate 1 and the first connecting plate 1 and the second connecting plate 2 are positioned and lead by the pin-and-hole 5 of the second connecting plate 2, therefore, bearing pin 3 makes the first connecting plate 1 and the second connecting plate 2 all can not moving radially along bearing pin 3 through the first connecting plate 1 and the second connecting plate 2;It is interference fit between described bearing pin 3 and the first connecting plate 1, it is matched in clearance between described bearing pin 3 and the second connecting plate 2, make the first connecting plate 1 and bearing pin 3 firm fixing, can not moving axially along bearing pin 3, but having certain interval between the second connecting plate 2 and bearing pin 3, therefore the second connecting plate 2 can move axially along bearing pin 3, wherein, described bearing pin 3 is two or more, it is preferred to two.
In a preferred embodiment, the internal diameter of described pin-and-hole 5 is all identical;
In further preferred embodiment, described bearing pin 3 is staged pin shaft structure, and wherein, the external diameter of bearing pin upper end is more than the external diameter of lower end;
Further preferred embodiment in, the external diameter of the upper end of described staged bearing pin realizes interference fit equal to the internal diameter of pin-and-hole 5, and the external diameter of the lower end of described staged bearing pin is less than the internal diameter of pin-and-hole 5, it is achieved matched in clearance.
In another preferred embodiment, the diameter of described bearing pin 3 is all the same;
In further preferred embodiment, the internal diameter of the pin-and-hole on the first connecting plate 1 is more than the internal diameter of the pin-and-hole on the second connecting plate 2;
Further preferred embodiment in, the internal diameter of the pin-and-hole on the first connecting plate 1 is equal to the external diameter of bearing pin 3, it is achieved interference fit, the internal diameter on the second connecting plate 2 is less than the external diameter of bearing pin 3, it is achieved matched in clearance.
Being further opened with the through hole for shifting part 4 traverse on the first connecting plate 1, on the second connecting plate, 2 offer the screwed hole 6 that the screw thread with shifting part 4 matches.
In a preferred embodiment, the internal diameter of through hole is more than the external diameter of shifting part 4, it is achieved the matched in clearance of shifting part 4 and through hole, so, shifting part 4 will not be subject to the friction of through hole when radial rotating and stop it freely rotatable.
In further preferred embodiment, screwed hole 6 on described shifting part 4 and the second connecting plate 2 is threaded engagement, so, when shifting part 4 rotates, second connecting plate 2 meeting moving axially along bearing pin 3, closer or far from the first connecting plate 1, it is achieved that the adjustment of the ligament of narrow tube 8, the different requirements connecing welded gaps can be met.
Further preferred embodiment in, described shifting part is screw, the external diameter of the head of a nail of described screw is more than the internal diameter of described through hole, and the head of a nail is stuck in outside the through hole of the first connecting plate 1, even if the first connecting plate 1, with screw, relative movement all will not occur when screw turns.
In a preferred embodiment, perforate in the through hole hole wall for shifting part 4 traverse of the first connecting plate 1, wherein it is equipped with for the backing pin 7 that shifting part 4 is spacing wherein, shifting part 4 is carried out spacing through the first connecting plate 1 by described backing pin 7, make it radially rotate only can not move radially, thus further ensure that the second connecting plate 2 is along the axial stable movement of shifting part 4, has namely better controled over the adjustment of the tube pitch of narrow tube 8.
In further preferred embodiment, described backing pin 7 is two or more and the both sides being evenly distributed in shifting part 4.
It is separately provided for placing the first groove 12 and the second groove 22 of narrow tube 8 in the left side in the left side of described first connecting plate 1 Yu described second connecting plate 2.
In a preferred embodiment, described first groove 12 and the second groove 22 are V-groove, and described first groove 12 includes the first left tilted surface and the first right tilted surface, and described second groove 22 includes the second left tilted surface 221 and the second right tilted surface 222.
In further preferred embodiment, first left tilted surface of described first groove 12 and the second left tilted surface 221 of the second groove 22 are coplanar, first right tilted surface of described first groove 12 and the second right tilted surface 222 of the second groove 22 are coplanar, so, can ensure that held narrow tube 8 in the lucky centering of pipe end without misplacing, meanwhile, the spacing of the first connecting plate 1 and the second connecting plate 2 and the tube pitch of scalable narrow tube 8 are moved.
On the first connecting plate 1 and the second connecting plate 2 is also respectively provided with the first pressing plate 11 and the second pressing plate 21, wherein, the left end of the first pressing plate 11 and the second pressing plate 21 each extends through the external diameter peak of narrow tube 8, wherein, first pressing plate and the second pressing plate can contact with the external diameter peak of narrow tube under external force, thus jointly clamping narrow tube with the first groove, the second groove.
Described first pressing plate 11 and the second pressing plate 21 are respectively arranged with the first connector 111 and the second connector 211, wherein, described first pressing plate 11 is fixed on the first connecting plate 1 by the first connector 111, described second pressing plate 21 is fixed on the second connecting plate 2 by the second connector 211, wherein, described first connector 111 and the second connector 211 are preferably bolt.
Being arranged with the first spring on described first connector 111, described first spring is between the first pressing plate 11 and the first connecting plate 1;Being arranged with the second spring 2111 on described second connector 211, described second spring 2111, between the second pressing plate 21 and the second connecting plate 2, wherein, after welding terminates, unclamps connector, and spring can flick, thus facilitating device to remove from tube bank.
In a preferred embodiment, before welding, tighten the first connector 111 and the second connector 211, first pressing plate 11 and the second pressing plate 21 straightening separately down are to the radial direction peak touching narrow tube, now, first pressing plate 11 and the first groove 12 clamp first narrow tube jointly, and the second pressing plate 21 and the second groove 22 clamp second narrow tube jointly.
Further preferred embodiment in, after welding, unclamp the first connector 111 and the second connector 211, the first pressing plate 11 and the second pressing plate 21 are upspring by the first spring and the second spring 2111 respectively, thus realize change narrow tube purpose.
In a preferred embodiment, first the first connector 111 and the second connector 211 is unclamped, first pressing plate 11 is upspring, and rotary dial part 4, make the first connecting plate 1 and the second connecting plate 2 separated by a distance, one end of first narrow tube is put between the first groove 12 and first pressing plate 11 of the first connecting plate 1, tighten the first connector 111 and first narrow tube is fixed;Then the second connector 211 is unclamped, one end of second narrow tube is put between the second groove 22 and second pressing plate 21 of the second connecting plate 2, tighten the second connector 211 to be fixed by second narrow tube, and rotary dial part 4, the second connecting plate 2 is made to move to the direction of the first connecting plate 1, now, two narrow tubes can be corresponding to until two narrow tubes dock and possess welding condition.
In description of the present utility model, it should be noted that, term " on ", D score, "left", "right", the orientation of the instruction such as " outward " or position relationship be based on the orientation under utility model works state or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or hint relative importance.
Above in association with preferred embodiment this utility model being illustrated, but these embodiments are only exemplary, only play illustrative effect.On this basis, it is possible to this utility model carries out multiple replacement and improvement, these each fall within protection domain of the present utility model.

Claims (11)

1. the axial alignment for narrow tube butt welding and fixing device, it is characterized in that, described axial alignment and fixing device include the first connecting plate (1), the second connecting plate (2), connect axle, shifting part (4) and the first pressing plate (11) and the second pressing plate (21), wherein
First connecting plate (1) and the second connecting plate (2) connect by connecting axle;
Shifting part (4) is connected through the first connecting plate and the second connecting plate (2), is used for driving the second connecting plate (2) to move up and down thus closer or far from the first connecting plate;
First pressing plate is installed on the first connecting plate, for clamping narrow tube (8) to be welded;
Second pressing plate is installed on the second connecting plate, for clamping another root narrow tube (8) to be welded.
2. axial alignment according to claim 1 and fixing device, it is characterised in that
Described connection axle is bearing pin (3),
Right side opening described first connecting plate (1) is provided with mean for the pin-and-hole (5) of bearing pin (3) traverse,
Right side opening described second connecting plate (2) is provided with mean for the pin-and-hole (5) of bearing pin (3) traverse.
3. axial alignment according to claim 2 and fixing device, it is characterised in that
Described bearing pin (3) sequentially passes through the pin-and-hole (5) of the first connecting plate (1) and the pin-and-hole (5) of the second connecting plate (2), thus the first connecting plate (1) and the second connecting plate (2) are positioned and led, described bearing pin (3) is two or more.
4. axial alignment according to claim 3 and fixing device, it is characterised in that be connected for interference fit between described bearing pin (3) with the first connecting plate (1), is connected for matched in clearance with between the second connecting plate (2).
5. axial alignment according to any one of Claims 1 to 4 and fixing device, it is characterised in that
Described shifting part (4) is screwed rod-like element,
First connecting plate (1) offers the through hole for shifting part (4) traverse, is connected for matched in clearance between shifting part (4) with the first connecting plate (1),
Second connecting plate (2) offers the screwed hole (6) that the screw thread with shifting part (4) matches, is threaded engagement between described shifting part (4) second connecting plate (2).
6. axial alignment according to claim 5 and fixing device, it is characterised in that described shifting part (4) is screw or bolt.
7. axial alignment according to claim 5 and fixing device, it is characterized in that, perforate in the through hole hole wall for shifting part (4) traverse of the first connecting plate (1), is wherein equipped with for the backing pin (7) that shifting part (4) is spacing.
8. axial alignment according to claim 1 and fixing device, it is characterised in that
The first groove (12) for clamping narrow tube (8) and the second groove (22) is offered respectively in the left side in the left side of described first connecting plate (1) Yu described second connecting plate (2).
9. axial alignment according to claim 8 and fixing device, it is characterized in that, described first groove (12) and the second groove (22) are V-groove, described first groove (12) includes the first left tilted surface and the first right tilted surface, described second groove (22) includes the second left tilted surface (221) and the second right tilted surface (222), wherein
First left tilted surface of described first groove (12) and second left tilted surface (221) of the second groove (22) are coplanar,
First right tilted surface of described first groove (12) and second right tilted surface (222) of the second groove (22) are coplanar.
10. axial alignment according to claim 9 and fixing device, it is characterised in that
Described first pressing plate (11) is fixed on the first connecting plate (1) by the first connector (111),
Described second pressing plate (21) is fixed on the second connecting plate (2) by the second connector (211).
11. axial alignment according to claim 10 and fixing device, it is characterised in that
Between the first pressing plate (11) and the first connecting plate (1), the first connector (111) is arranged with the first spring;
Between the second pressing plate (21) and the second connecting plate (2), the second connector (211) is arranged with the second spring;
Described first connector (111) and the second connector (211) are bolt.
CN201620011588.5U 2016-01-05 2016-01-05 A axial alignment and fixing device for narrow tube butt welding usefulness Active CN205342335U (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458610A (en) * 2016-01-05 2016-04-06 哈电集团(秦皇岛)重型装备有限公司 Axial centering and fixing device used for butt welding of small-diameter pipes
CN106624322A (en) * 2016-12-07 2017-05-10 贵州黎阳航空动力有限公司 Heat isolation screen welding tool
CN106944723A (en) * 2017-05-05 2017-07-14 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel heat exchanger tube docking automatic soldering technique for filling melting ring
CN106975826A (en) * 2017-05-05 2017-07-25 哈电集团(秦皇岛)重型装备有限公司 A kind of nickel-base alloy heat exchanger tube docks automatic soldering technique
CN107052517A (en) * 2017-05-05 2017-08-18 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel docks automatic soldering technique with nickel-base alloy dissimilar steel heat exchange tube
CN107052536A (en) * 2017-05-05 2017-08-18 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel heat exchanger tube docking automatic soldering technique without packing material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458610A (en) * 2016-01-05 2016-04-06 哈电集团(秦皇岛)重型装备有限公司 Axial centering and fixing device used for butt welding of small-diameter pipes
CN105458610B (en) * 2016-01-05 2018-07-10 哈电集团(秦皇岛)重型装备有限公司 A kind of axial alignment and fixing device for minor diameter pipe butt welding
CN106624322A (en) * 2016-12-07 2017-05-10 贵州黎阳航空动力有限公司 Heat isolation screen welding tool
CN106944723A (en) * 2017-05-05 2017-07-14 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel heat exchanger tube docking automatic soldering technique for filling melting ring
CN106975826A (en) * 2017-05-05 2017-07-25 哈电集团(秦皇岛)重型装备有限公司 A kind of nickel-base alloy heat exchanger tube docks automatic soldering technique
CN107052517A (en) * 2017-05-05 2017-08-18 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel docks automatic soldering technique with nickel-base alloy dissimilar steel heat exchange tube
CN107052536A (en) * 2017-05-05 2017-08-18 哈电集团(秦皇岛)重型装备有限公司 A kind of low-alloy steel heat exchanger tube docking automatic soldering technique without packing material
CN107052536B (en) * 2017-05-05 2020-02-07 哈电集团(秦皇岛)重型装备有限公司 Automatic butt welding process for low alloy steel heat exchange tubes without filler

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