CN106975890B - Setting tool for the welding of fire hydrant connecting bend - Google Patents
Setting tool for the welding of fire hydrant connecting bend Download PDFInfo
- Publication number
- CN106975890B CN106975890B CN201710376033.XA CN201710376033A CN106975890B CN 106975890 B CN106975890 B CN 106975890B CN 201710376033 A CN201710376033 A CN 201710376033A CN 106975890 B CN106975890 B CN 106975890B
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- CN
- China
- Prior art keywords
- welding
- drive shaft
- press plate
- shaft mechanism
- fire hydrant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 87
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 13
- 238000004513 sizing Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 201000001371 inclusion conjunctivitis Diseases 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 206010044325 trachoma Diseases 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—External pipe alignment clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0538—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical work; Clamping devices therefor for rotating tubes, e.g. rollers
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of setting tool for the welding of fire hydrant connecting bend, including operation console, big drive shaft mechanism, small driving shaft mechanism, fixing device, press plate mechanism and adjustable bolt device；The big drive shaft mechanism is mounted in the middle part of operation console；The fixing device and adjustable bolt device are located at the both sides of big drive shaft mechanism and are fixedly mounted on operation console；The press plate mechanism is located at the top of big drive shaft mechanism and press plate mechanism one end is connect with adjustable bolt device, and the press plate mechanism other end is acted on fixing device；The press plate mechanism is adjusted relative to the position of big drive shaft mechanism by adjustable bolt device, is fixed by fixing device；The small driving shaft mechanism is located above big drive shaft mechanism, is mounted on press plate mechanism.The setting tool effectively solves the matters such as fire hydrant connecting bend speed of welding is slow, interface deviation is of poor quality, improves working efficiency, has saved artificial and cost, environmentally protective.
Description
Technical field
The invention is related to construction field of tool, being used for what fire hydrant connecting bend welded more particularly to a kind of
Setting tool.
Background technology
It is well known that architectural engineering fire-fighting installation profession is essential；The welding of fire hydrant connecting bend is fire-fighting peace
A very important process in dress profession, while it in Building Construction is one more complicated to be also, difficulty ratio
Larger important link, fire hydrant connecting bend welding procedure quality directly affect entire hydrant system presentation quality and
Using function, traditional way：By fire hydrant connecting bend using directly constructing on ground or operation console spot welding, such way is not
Can conveniently welding procedure, and quality problems for being susceptible to welding junction deviation etc., to cause rectification expense
It is big with high and difficulty of construction.
Invention content
The invention in view of the shortcomings of the prior art, disclose it is a kind of for fire hydrant connecting bend welding setting tool,
Be mainly used for fire hydrant connecting bend welding job in architectural engineering fire-fighting system, the setting tool can fundamentally solve with
The variety of problems of upper appearance, and saving is a large amount of artificial, accelerates service speed.
The technical solution that the invention uses for：
For the setting tool of fire hydrant connecting bend welding, including operation console 1, big drive shaft mechanism 2, small transmission shaft machine
Structure 3, fixing device 4, press plate mechanism 5 and adjustable bolt device 6；The big drive shaft mechanism 2 is mounted on 1 middle part of operation console；
The fixing device 4 and adjustable bolt device 6 are located at the both sides of big drive shaft mechanism 2 and are fixedly mounted on operation console 1
On；The press plate mechanism 5 is located at the top of big drive shaft mechanism 2 and 5 one end of press plate mechanism and is connect with adjustable bolt device 6,
5 other end of press plate mechanism is acted on fixing device 4；The press plate mechanism 5 passes through adjustable relative to the position of big drive shaft mechanism 2
It saves bolt device 6 to adjust, be fixed by fixing device 4；The small driving shaft mechanism 3 is located at 2 top of big drive shaft mechanism, installation
On press plate mechanism 5；It is placed on the small driving shaft mechanism in big drive shaft mechanism 2 by top with the pipeline of connecting bend welding
3 rotation when carrying out compressing limit and realizing welding.
It is described for fire hydrant connecting bend welding setting tool, big drive shaft mechanism 2 have two be mutually parallel and
Axis I 10 on operation console 1 is respectively equipped with several big bearings 11 on the every axis I 10, and the pipeline is placed on greatly
On bearing 11.
The setting tool for the welding of fire hydrant connecting bend, the both ends of the axis I 10 are pacified by fastening type structure
It is fixed on operation console 1 and by connecting bolt.
The setting tool for the welding of fire hydrant connecting bend, there are two opposite for the tool of adjustable bolt device 6
The mounting plate 18 of setting is respectively provided with vertically arranged long through-hole 21 on two mounting plates 18, is equipped with and adjusts between two mounting plates 18
The both ends of nodal axisn 19, the adjustment axis 19 are each passed through the long through-hole 21 of both sides and are fixed on mounting plate 18 by fastening bolt 22
On, after adjusting height in long through-hole 21 of the adjustment axis 19 on mounting plate 18, fixed by fastening bolt 22.
The setting tool for the welding of fire hydrant connecting bend, the press plate mechanism 5 have sizing steel plate 16, sizing
The middle part of steel plate 16 is equipped with the installation through-hole 24 for installing small driving shaft mechanism, and one end of sizing steel plate 16 is equipped with fixing axle
17, the fixing axle 17 is connected on adjustable bolt device 6 and can rotate about；The other end of the sizing steel plate 16 has
Gap 23, the gap 23 are acted on and are fastened by bolts with fixing device 4.
There are two mutually to be put down for the setting tool for the welding of fire hydrant connecting bend, the small driving shaft mechanism 3
Row and the axis II 12 being fixedly mounted on press plate mechanism 5, axis II 12 are equipped with small bearing 13.
The setting tool for the welding of fire hydrant connecting bend, the fixing device 4 have round steel 14, the round steel
14 bottom end is fixed on operation console 1, and there is helicitic texture 20, helicitic texture 20 to be equipped with limit spiral shell on the top of the round steel 14
Cap 15,5 other end of the press plate mechanism are set on helicitic texture 20 and are overlapped on limit screw cap 15, pass through limit screw cap 15
After adjusting its height, then is acted on and be fixed on limit screw cap 15 by nut and helicitic texture 20.
There is platform 7,7 lower section of platform to set for the setting tool for the welding of fire hydrant connecting bend, the operation console 1
It is useful for the square steel supporting leg 9 of support；The platform 7 is equipped with the installation limit hole 8 for installing big drive shaft mechanism.
The invention has the advantages that：
The invention is a kind of simple structure and reasonable design, easy to operate, the special fire hydrant connection that work efficiency is high
Elbow welding setting tool.In use, welded We conducted traditional welding and application fire hydrant jointing soldering appliance
Using comparison, the result is that traditional welding：1 people, one day most weld ell, 80 pipes.Using the invention setting tool, together
Sample is 1 people easily 240 pipes of weld ell, final product quality can greatly improve, not occur welding junction deviation etc. and ask for one day
Topic, and welding effect is fabulous, weld bond smooth even, and no trachoma is mingled with, the not full phenomenon of weld seam, will not be later fire-fighting
System operation and use leave hidden danger, and substantially increase construction speed, and the invention can effectively solve fire hydrant connection
Elbow welding speed is slow, the matters such as of poor quality, improves working efficiency, has saved artificial and cost, environmentally protective.And the present invention
Easy to make, simple operation is created, vulnerable part replacement is simple, efficient, and energy consumption is low, reduces construction cost.
Description of the drawings
Fig. 1 is structural schematic diagram of the invention for the setting tool of fire hydrant connecting bend welding.
Fig. 2 is operation console schematic diagram shown in Fig. 1.
Fig. 3 is big drive shaft structural scheme of mechanism shown in Fig. 1.
Fig. 4 is small driving shaft mechanism schematic diagram shown in Fig. 1.
Fig. 5 is fixing device schematic diagram shown in Fig. 1.
Fig. 6 is press plate mechanism schematic diagram shown in Fig. 1.
Fig. 7 is adjustable bolt schematic device shown in Fig. 1.
1- operation consoles, 2- big drive shafts mechanism, the small driving shaft mechanisms of 3-, 4- fixing devices, 5- press plate mechanisms, 6- are adjustable
Bolt device, 7- platforms, 8- installation limit holes, 9- square steel supporting legs, 10- axis I, the big bearings of 11-, 12- axis II, the small bearings of 13-,
14- round steel, 15- limit screw caps, 16- sizing steel plates, 17- fixing axles, 18- mounting plates, 19- fastening bolts, 20- helicitic textures,
21- long through-holes, 22- fastening bolts, 23- gap, 24- installation through-holes.
Specific implementation mode
A kind of setting tool for the welding of fire hydrant connecting bend as shown in Figure 1, including operation console 1, big drive shaft machine
Structure 2, small driving shaft mechanism 3, fixing device 4, press plate mechanism 5 and adjustable bolt device 6.The big drive shaft mechanism 2 is installed
At 1 middle part of operation console；The fixing device 4 and adjustable bolt device 6 are located at both sides and the fixation of big drive shaft mechanism 2
On operation console 1；The press plate mechanism 5 is located at the top of big drive shaft mechanism 2 and 5 one end of press plate mechanism and adjustable spiral shell
Pin device 6 connects, and 5 other end of press plate mechanism is acted on fixing device 4；The press plate mechanism 5 is relative to big drive shaft mechanism 2
Position is adjusted by adjustable bolt device 6, is fixed by fixing device 4；The small driving shaft mechanism 3 is located at big drive shaft machine
2 top of structure, is mounted on press plate mechanism 5；It is placed in big drive shaft mechanism 2 through top with the pipeline of connecting bend welding
Rotation when small driving shaft mechanism 3 carries out compression limit and realizes welding.
Operation console 1 as shown in Figure 2 has platform 7, and 7 lower section of platform is equipped with by welding manner is used to support the 40 of platform 7
× 40 square steel supporting legs 9；Preferably, platform 7 is welded using 40 × 40 angle steel and 10 steel plates, the long * wide * high of operation console 1
Respectively 400 × 300 × 300mm.The platform 7 is equipped with the installation limit hole 8 for installing big drive shaft mechanism 2.
There are two to be mutually parallel and be mounted on the axis I in operation console 1 on platform 7 for big drive shaft mechanism 2 as shown in Figure 1,3
10, two big bearing 11 is respectively equipped on every axis I 10, the pipeline (the flat pipe of extinguishing pipe) is placed on big bearing 11.Wherein
Axis I is made of welded still pipe, and big bearing 11 is welded on axis I 10, and the both ends of axis I 10 are mounted on by fastening type structure respectively
It is fixed on platform 7 and by connecting bolt so that the distance between two axis I 10 are adjustable, and when application may be alternatively configured wherein one
The both ends of axis I 10 are fixed on by welding on platform 7, and the both ends of another axis I 10 use fastening type structure and connection
The fixed mode of bolt is mounted on platform 7.The position of installation limit hole 8 on platform 7 is corresponding with big bearing 11 so that big
Bearing 11 can be freely rotated and limit its installation site on platform 7.
As illustrated in figures 1 and 7, positioned at the adjustable bolt device 6 of 7 side of platform tool, there are two be oppositely arranged and pass through welding
Mode is fixed on the mounting plate 18 on platform 7, and vertically arranged long through-hole 21, two installations are respectively provided on two mounting plates 18
Adjustment axis 19 is equipped between plate 18, the both ends of the adjustment axis 19 are each passed through the long through-hole 21 of both sides and by fastening bolt 22
It is fixed on mounting plate 18, the adjustment axis 19 can adjust height in the long through-hole 21 on mounting plate 18, after height is adjusted
It is fixed by fastening bolt 22.
The press plate mechanism 5 positioned at 2 top of big drive shaft mechanism has sizing steel plate 16 as shown in figs. 1 and 6, steel plate 16 of shaping
Middle part be equipped with installation through-hole 24 for installing small driving shaft mechanism 3, one end of sizing steel plate 16 is equipped with fixing axle 17, described
In the adjustment axis 19 that fixing axle 17 is connected in adjustable bolt device 6 and can rotate about (therefore sizing steel plate 16 relative to
The height of big drive shaft 2 is adjusted by the height of adjustment axis 19 in adjustable bolt device 6)；Shape the another of steel plate 16
There is gap 23, the gap 23 to act on and be fastened by bolts with fixing device 4 at end.
Small driving shaft mechanism 3 as shown in figs. 1 and 4 has two and is mutually parallel and is fixed on press plate mechanism by welding manner
The axis II 12 shaped on steel plate 16 in 5 is equipped with small bearing 13 on each axis II 12, and axis II 12 is by welded still pipe system
At small bearing 13 is welded on axis II 12.
There is fixing device 4 round steel 14, the bottom end of the round steel 14 to be fixed on by hinging manner flat as described in figures 1 and 5
On platform 7, there is helicitic texture 20, helicitic texture 20 to be equipped with limit screw cap 15, determine in the press plate mechanism 5 on the top of round steel 14
The gap 23 of 16 other end of shape steel plate is set on helicitic texture 20 and is overlapped on limit screw cap 15, is adjusted by limit screw cap 15
After saving its height, then is acted on and be fixed on limit screw cap 15 by nut and helicitic texture 20.
Using when be divided into following steps：
1) pipeline welded with connecting bend (the flat pipe of extinguishing pipe) is put on big bearing 11.
2) according to the outer diameter of pipeline, the height of adjustment axis 19 in adjustable bolt device 6 is adjusted, by adjustment axis 19 after mixing up
It is tightened and is fixed on mounting plate 18 by fastening bolt 22；Sizing steel plate 16 in press plate mechanism 5 is passed through into fixation
Axis 17 is rotated down, and the small bearing 13 in small driving shaft mechanism 3 is made to be pressed on pipeline, and the other end for steel plate 16 of shaping is passed through spiral shell
Bolt is fastened in fixing device 4, to which pipeline to be fixed between big bearing 11 and small bearing 13.
3) connecting bend and the pipeline after fixing are welded using 3 sites, is tentatively connected.
4) by the relative rolling of big bearing 11, small bearing 13, can it is suitable manually, rotate counterclockwise integrated connection pipe (pipeline
And connecting bend), carry out repair welding.
This can carry out up and down adjustment for the setting tool that fire hydrant connecting bend welds according to the diameter of pipeline can
Adjusting bolt device keeps pipeline fixed between size transmission shaft in favor of more easily pipeline is fixed on operation console
Securely, it by adjusting rotated pipe manually, then being rotated by bearing, Ke Yishun, counterclockwise rotation, welding procedure is convenient and efficient,
The present invention is easy to operate, efficient, improves and is susceptible to interface deviation and other issues in traditional construction, improves welding matter
Amount, reduces labor intensity, and improves working efficiency, has saved cost of labor, and vulnerable part replacement is simple, energy consumption is low, environmentally protective.
Claims (8)
1. the setting tool for the welding of fire hydrant connecting bend, which is characterized in that including operation console (1), big drive shaft mechanism
(2), small driving shaft mechanism (3), fixing device (4), press plate mechanism (5) and adjustable bolt device (6)；The big drive shaft machine
Structure (2) is mounted in the middle part of operation console (1)；The fixing device (4) and adjustable bolt device (6) are located at big drive shaft machine
The both sides of structure (2) are simultaneously fixedly mounted on operation console (1)；The press plate mechanism (5) be located at the top of big drive shaft mechanism (2) and
Press plate mechanism (5) one end is connect with adjustable bolt device (6), and press plate mechanism (5) other end is acted on fixing device (4)；Institute
The position that press plate mechanism (5) is stated relative to big drive shaft mechanism (2) is adjusted by adjustable bolt device (6), is filled by fixed
It is fixed to set (4)；The small driving shaft mechanism (3) is located above big drive shaft mechanism (2), is mounted on press plate mechanism (5)；With company
The pipeline for connecing elbow welding is placed in big drive shaft mechanism (2) and carries out compression limit by the small driving shaft mechanism (3) of top
And realize rotation when welding.
2. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that big drive shaft mechanism
(2) it with two axis I (10) on operation console (1) that are mutually parallel and are mounted on, is respectively equipped on the every axis I (10) several
A big bearing (11), the pipeline are placed on big bearing (11).
3. the setting tool for the welding of fire hydrant connecting bend as claimed in claim 2, which is characterized in that the axis I (10)
Both ends by fastening type structure be mounted on operation console (1) on and by connect bolt fix.
4. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that the adjustable spiral shell
Pin device (6) tool is respectively provided with vertically arranged long through-hole there are two the mounting plate (18) that is oppositely arranged on two mounting plates (18)
(21), adjustment axis (19) is equipped between two mounting plates (18), the length that the both ends of the adjustment axis (19) are each passed through both sides is logical
Hole (21) is simultaneously fixed on by fastening bolt (22) on mounting plate (18), and length of the adjustment axis (19) on mounting plate (18) is logical
It is fixed by fastening bolt (22) after adjusting height in hole (21).
5. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that the press plate mechanism
(5) there is sizing steel plate (16), the middle part of sizing steel plate (16) to be equipped with the installation through-hole (24) for installing small driving shaft mechanism,
One end of sizing steel plate (16) is equipped with fixing axle (17), and the fixing axle (17) is connected on adjustable bolt device (6) and can
It rotates about；There is the other end of the sizing steel plate (16) gap (23), the gap (23) to be acted on simultaneously with fixing device (4)
It is fastened by bolts.
6. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that the small transmission shaft
There are two axis II (12) for being mutually parallel and being fixedly mounted on press plate mechanism (5), axis II (12) to be equipped with small axis for mechanism (3)
It holds (13).
7. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that the fixing device
(4) there is round steel (14), the bottom end of the round steel (14) to be fixed on operation console (1), the top of the round steel (14) has spiral shell
Line structure (20), helicitic texture (20) are equipped with limit screw cap (15), and press plate mechanism (5) other end is set in helicitic texture
(20) it on and is overlapped on limit screw cap (15), after adjusting its height by limit screw cap (15), then passes through nut and screw thread knot
Structure (20) effect is fixed on limit screw cap (15).
8. the setting tool for the welding of fire hydrant connecting bend as described in claim 1, which is characterized in that the operation console
(1) there is platform (7), the square steel supporting leg (9) being used to support is equipped with below platform (7)；The platform (7) is equipped with for installing
The installation limit hole (8) of big drive shaft mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710376033.XA CN106975890B (en) | 2017-05-25 | 2017-05-25 | Setting tool for the welding of fire hydrant connecting bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710376033.XA CN106975890B (en) | 2017-05-25 | 2017-05-25 | Setting tool for the welding of fire hydrant connecting bend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106975890A CN106975890A (en) | 2017-07-25 |
| CN106975890B true CN106975890B (en) | 2018-09-21 |
Family
ID=59342582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710376033.XA Expired - Fee Related CN106975890B (en) | 2017-05-25 | 2017-05-25 | Setting tool for the welding of fire hydrant connecting bend |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106975890B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262194A (en) * | 2018-11-19 | 2019-01-25 | 天津市武清区环球锌业有限公司 | A kind of tooling improving workpiece welding efficiency |
| CN109277761A (en) * | 2018-11-19 | 2019-01-29 | 天津市武清区环球锌业有限公司 | A kind of girth welding tooling |
| CN109604917A (en) * | 2018-12-21 | 2019-04-12 | 中煤北京煤矿机械有限责任公司 | Welded flip tire for hydraulic support push rod |
| CN113458696A (en) * | 2021-08-19 | 2021-10-01 | 南京合信自动化有限公司 | Clamp for welding cylindrical metal section |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE421881B (en) * | 1979-10-01 | 1982-02-08 | Skutskers Rostfria Ab | TOOL FOR PROCESSING WHEELS |
| CN200967125Y (en) * | 2006-11-24 | 2007-10-31 | 上海外高桥造船有限公司 | Welding turning rolls |
| CN202037430U (en) * | 2011-04-30 | 2011-11-16 | 山西晋城无烟煤矿业集团有限责任公司 | Rotatable T-shaped welding pipe support |
| CN202377742U (en) * | 2011-12-26 | 2012-08-15 | 中国二十二冶集团有限公司 | Special V-shaped iron for pipe welding |
| CN102689120A (en) * | 2012-06-05 | 2012-09-26 | 深圳市神拓机电设备有限公司 | Steel pipe rotation driving device |
| CN204018917U (en) * | 2014-06-27 | 2014-12-17 | 高良富 | Adjustable pipeline circumgyration incision positioner |
| CN204843406U (en) * | 2015-06-03 | 2015-12-09 | 广州增立钢管结构股份有限公司 | A joint close device for longitudinal welded pipe |
| CN206795155U (en) * | 2017-05-25 | 2017-12-26 | 江苏南通二建集团有限公司 | Setting tool for the welding of fire hydrant connecting bend |
-
2017
- 2017-05-25 CN CN201710376033.XA patent/CN106975890B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106975890A (en) | 2017-07-25 |
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Granted publication date: 20180921 |