CN105033539A - Fixture special for steel pipe flange welding - Google Patents
Fixture special for steel pipe flange welding Download PDFInfo
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- CN105033539A CN105033539A CN201510406890.0A CN201510406890A CN105033539A CN 105033539 A CN105033539 A CN 105033539A CN 201510406890 A CN201510406890 A CN 201510406890A CN 105033539 A CN105033539 A CN 105033539A
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- positioning block
- steel pipe
- flange
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- 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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
本发明公开了一种钢管法兰焊接专用夹具，属于焊接辅助装置领域。该专用夹具包括底座，支架，丝杠，手柄，上定位块和下定位块，上定位块包括法兰上定位块和钢管上定位块，下定位块包括法兰下定位块和钢管下定位块，底座主要用于将该专用夹具固定在工作台或者其他地方，上下定位块相对布置且下定位块固定在底座上，旋动手柄，丝杠旋转，控制上定位块上下移动，从而完成对待焊接钢管和法兰的定位装夹。该专用夹具结构简单，使用方便，能有效地保证焊接的钢管中心线与法兰面垂直，钢管法兰中心线共线，接口平齐，改善了焊接的质量，提高了工作效率，减轻了工人的劳动强度；该夹具携带方便，适用范围广，经济实用。
The invention discloses a special fixture for steel pipe flange welding, which belongs to the field of welding auxiliary devices. The special fixture includes a base, a bracket, a lead screw, a handle, an upper positioning block and a lower positioning block, the upper positioning block includes a flange upper positioning block and a steel pipe upper positioning block, and the lower positioning block includes a flange lower positioning block and a steel pipe lower positioning block , the base is mainly used to fix the special fixture on the workbench or other places, the upper and lower positioning blocks are arranged oppositely and the lower positioning block is fixed on the base, the handle is rotated, the screw rotates, and the upper positioning block is controlled to move up and down, thus completing the welding to be done Positioning and clamping of steel pipes and flanges. The special fixture has a simple structure and is easy to use. It can effectively ensure that the center line of the welded steel pipe is perpendicular to the flange surface, the center line of the steel pipe flange is collinear, and the interface is even. low labor intensity; the fixture is easy to carry, has a wide range of applications, and is economical and practical.
Description
技术领域 technical field
本发明涉及焊接辅助装置领域，具体的说是一种钢管法兰焊接专用夹具。 The invention relates to the field of welding auxiliary devices, in particular to a special fixture for steel pipe flange welding.
背景技术 Background technique
焊接是将两个或者多个金属构件连接在一起的一种重要连接方式，在机械，船舶，航空，化工，车辆和管道等领域有着广泛的应用。钢管和法兰焊接是其中重要的一部分。 Welding is an important connection method for connecting two or more metal components, and it is widely used in the fields of machinery, ships, aviation, chemicals, vehicles and pipelines. Steel pipe and flange welding is an important part of it.
钢管和法兰焊接在一起，不仅要满足压力和强度的要求，而且还要求美观。一旦钢管法兰中心线不共线（不满足同轴度），钢管中心线与法兰面不垂直（不满足垂直度），接口不平齐，不但影响美观度，还有可能增加后续焊接件安装的难度，甚至有可能导致法兰连接处漏气或者漏液，从而引发安全事故。在很多条件下，受施工条件的限制，中心线共线（满足同轴度），钢管中心线和法兰面垂直（满足垂直度），接口平齐等要求很难达到。 Steel pipes and flanges are welded together, not only to meet the requirements of pressure and strength, but also to be beautiful. Once the center line of the steel pipe flange is not collinear (coaxiality is not satisfied), the center line of the steel pipe is not perpendicular to the flange surface (perpendicularity is not satisfied), and the interface is not flush, it will not only affect the aesthetics, but also increase the installation of subsequent weldments The difficulty may even lead to air or liquid leakage at the flange connection, which may cause a safety accident. Under many conditions, limited by construction conditions, the center line is collinear (satisfies the coaxiality), the center line of the steel pipe is perpendicular to the flange surface (satisfies the verticality), and the requirements of flush joints are difficult to meet.
在实际生产作业过程中，凭借工人师傅的经验，先点焊，然后用角尺等工具校正，反复多次，直至满足钢管中心线与法兰面垂直，钢管法兰中心线共线，接口平齐。这样的作业过程，工作效率低下，焊接进度较慢，工人师傅的劳动强度较大，浪费工时，严重影响焊接的进度、质量和美观度。 In the actual production process, relying on the experience of the master worker, spot welding is performed first, and then corrected with tools such as squares, repeated many times until the center line of the steel pipe is perpendicular to the flange surface, the center line of the steel pipe flange is collinear, and the interface is flush. . In such an operation process, the work efficiency is low, the welding progress is relatively slow, and the labor intensity of the master worker is relatively large, which wastes man-hours and seriously affects the progress, quality and aesthetics of welding.
发明内容 Contents of the invention
本发明的目的在于提供一种结构简单，实用方便的钢管法兰焊接专用夹具，主要解决钢管中心线与法兰面不易垂直、钢管中心线与法兰中心线不易共线、接口不易平齐和工作效率低下等问题。 The purpose of the present invention is to provide a special fixture for steel pipe flange welding with simple structure, practicality and convenience. Low work efficiency and other issues.
本发明解决其技术问题所采取的技术方案是：所述一种钢管法兰焊接专用夹具，该夹具包括底座、支架、丝杠、手柄、上定位块和下定位块，上定位块和下定位块均为V型，其夹角为120度，上定位块和下定位块相对布置且下定位块固定在底座上，上定位块包括法兰上定位块和钢管上定位块，下定位块包括法兰下定位块和钢管下定位块，钢管上定位块设计有侧耳且与支架内壁贴合，法兰上定位块和法兰下定位块的一端均设计有挡块，装夹过程中法兰一端面与法兰下定位块的挡块贴合，支架的侧部和底部设计有加强筋，防止因施加的夹紧力过大，导致支架变形，影响定位装夹的精度，底座主要用于将该专用夹具固定在工作台或者其他地方，夹具中三根丝杠的长度不同，旋动手柄，丝杠旋转，控制上定位块上下移动，从而完成对待焊接钢管和法兰的定位装夹。 The technical solution adopted by the present invention to solve the technical problem is: the special fixture for steel pipe flange welding, the fixture includes a base, a bracket, a screw, a handle, an upper positioning block and a lower positioning block, an upper positioning block and a lower positioning block The blocks are all V-shaped, with an included angle of 120 degrees. The upper positioning block and the lower positioning block are arranged oppositely and the lower positioning block is fixed on the base. The upper positioning block includes the upper positioning block of the flange and the upper positioning block of the steel pipe, and the lower positioning block includes The lower positioning block of the flange and the lower positioning block of the steel pipe, the upper positioning block of the steel pipe is designed with side ears and fits with the inner wall of the bracket, and one end of the upper positioning block of the flange and the lower positioning block of the flange is designed with a stopper. One end face fits with the stopper of the positioning block under the flange. The side and bottom of the bracket are designed with reinforcing ribs to prevent the bracket from being deformed due to excessive clamping force and affecting the accuracy of positioning and clamping. The base is mainly used for Fix the special fixture on the workbench or other places. The lengths of the three lead screws in the fixture are different. Turn the handle to rotate the lead screws and control the upper positioning block to move up and down, thereby completing the positioning and clamping of the welded steel pipe and the flange.
本发明的有益效果是:本发明能方便快捷对待焊接钢管法兰定位装夹，有效地实现钢管中心线与法兰面垂直，钢管法兰中心线共线，接口平齐等焊接要求，也很方便的调节钢管与法兰接口之间的缝隙，改善了焊接的质量，节约了大量工时，提高了工作效率，减轻了工人师傅的劳动强度；该专用夹具结构简单紧凑，使用简单，应用范围广，携带方便，经济实用。 The beneficial effects of the present invention are: the present invention can conveniently and quickly treat the welded steel pipe flange for positioning and clamping, and effectively realize the welding requirements such as the center line of the steel pipe being perpendicular to the flange surface, the center line of the steel pipe flange being collinear, and the interface flush. It is convenient to adjust the gap between the steel pipe and the flange interface, which improves the quality of welding, saves a lot of man-hours, improves work efficiency, and reduces the labor intensity of workers; the special fixture has a simple and compact structure, is easy to use, and has a wide range of applications , easy to carry, economical and practical.
附图说明 Description of drawings
图1是本发明的立体结构示意图。 Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.
图2是本发明的另一视向立体结构示意图。 Fig. 2 is a schematic diagram of another perspective structure of the present invention.
图3是本发明的主视结构示意图。 Fig. 3 is a schematic diagram of the front view structure of the present invention.
图4是图3的左视结构示意图。 FIG. 4 is a left view structural diagram of FIG. 3 .
图5是图3的俯视结构示意图。 FIG. 5 is a top view structural diagram of FIG. 3 .
图中：1底座，2钢管下定位块，3待焊接钢管，4支架，5钢管上定位块，6待焊接法兰，7法兰下定位块，8法兰上定位块，9手柄，10丝杠。 In the figure: 1 base, 2 steel pipe lower positioning block, 3 steel pipe to be welded, 4 bracket, 5 steel pipe upper positioning block, 6 flange to be welded, 7 flange lower positioning block, 8 flange upper positioning block, 9 handle, 10 lead screw.
具体实施方式 Detailed ways
下面将结合附图和实施例对本发明作进一步说明，其中的示意性实施方式及说明仅用来解释本发明，但并不作为对本发明的限定。 The present invention will be further described below in conjunction with the accompanying drawings and examples, wherein the schematic implementations and descriptions are only used to explain the present invention, but are not intended to limit the present invention.
如图1、图2、图3、图4和图5所示，一种钢管法兰焊接专用夹具，其结构包括底座1、支架4、丝杠10、手柄9、上定位块和下定位块，上定位块和下定位块均为V型，其夹角为120度，上定位块和下定位块相对布置且下定位块固定在底座1上，上定位块包括法兰上定位块8和钢管上定位块5，下定位块包括法兰下定位块7和钢管下定位块2，钢管上定位块5设计有侧耳且与支架4内壁贴合，法兰上定位块8和法兰下定位块7的一端均设计有挡块，装夹过程中法兰6一端面与法兰下定位块7的挡块贴合，支架4的侧部和底部设计有加强筋，防止因施加的夹紧力过大，导致支架4变形，影响定位装夹的精度，底座1主要用于将该专用夹具固定在工作台或者其他地方，夹具中三根丝杠10的长度不同，旋动手柄9，丝杠10旋转，控制上定位块（钢管上定位块5和法兰上定位块8）上下移动，从而完成对待焊接钢管3和法兰6的定位装夹。 As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a special fixture for steel pipe flange welding, its structure includes a base 1, a bracket 4, a screw 10, a handle 9, an upper positioning block and a lower positioning block , the upper positioning block and the lower positioning block are both V-shaped, and the included angle is 120 degrees. The upper positioning block and the lower positioning block are arranged oppositely and the lower positioning block is fixed on the base 1. The upper positioning block includes flange upper positioning block 8 and The upper positioning block 5 of the steel pipe and the lower positioning block include the lower positioning block 7 of the flange and the lower positioning block 2 of the steel pipe. The upper positioning block 5 of the steel pipe is designed with side ears and fits with the inner wall of the bracket 4. One end of the block 7 is designed with a stopper. During the clamping process, one end surface of the flange 6 fits with the stopper of the positioning block 7 under the flange. The side and bottom of the bracket 4 are designed with reinforcing ribs to prevent clamping due to clamping. Excessive force will cause the bracket 4 to deform, which will affect the accuracy of positioning and clamping. The base 1 is mainly used to fix the special fixture on the workbench or other places. The lengths of the three lead screws 10 in the fixture are different. 10 rotates to control the upper positioning block (the positioning block 5 on the steel pipe and the positioning block 8 on the flange) to move up and down, thereby completing the positioning and clamping of the steel pipe 3 and the flange 6 to be welded.
本发明使用时，旋转手柄9，丝杠10旋转，将钢管上定位块5和法兰上定位块8上移到合适位置，然后将钢管3放入钢管下定位块2上，法兰6放入法兰下定位块7上，法兰6的一个端面要与法兰下定位块7的挡块贴合，然后调整钢管3和法兰6接口间缝隙，调整完毕后，旋转手柄9，丝杠10旋转，钢管上位块5和法兰上定位块8均向下移动，直至夹紧钢管3和法兰6，然后点焊；松动手柄9，将钢管3和法兰6旋转180度，再次调整装夹，再次点焊，完成点焊后，取出点焊连接后的钢管3和法兰6，再次焊接，直至完成焊接作业。 When the present invention is in use, the handle 9 is rotated, the lead screw 10 is rotated, the upper positioning block 5 of the steel pipe and the upper positioning block 8 of the flange are moved to a suitable position, and then the steel pipe 3 is put into the lower positioning block 2 of the steel pipe, and the flange 6 is placed Insert the flange lower positioning block 7, one end face of the flange 6 should be fitted with the stopper of the flange lower positioning block 7, then adjust the gap between the steel pipe 3 and the flange 6 interface, after the adjustment, rotate the handle 9, wire The lever 10 is rotated, the upper block 5 of the steel pipe and the positioning block 8 on the flange move downward until the steel pipe 3 and the flange 6 are clamped, and then spot welding; the handle 9 is loosened, and the steel pipe 3 and the flange 6 are rotated 180 degrees, and again Adjust the clamping, spot welding again, after the spot welding is completed, take out the steel pipe 3 and the flange 6 connected by spot welding, and weld again until the welding operation is completed.
通过上述实施例，该专用夹具的使用有效地达到钢管中心线与法兰面垂直，钢管法兰中心线共线，接口平齐等焊接要求，经济实用，效率较高，改善了焊接的质量，减轻了工人的劳动强度。 Through the above-mentioned embodiment, the use of the special fixture can effectively meet the welding requirements such that the center line of the steel pipe is perpendicular to the flange surface, the center line of the steel pipe flange is collinear, and the interface is flush. It is economical and practical, has high efficiency, and improves the quality of welding. Reduce the labor intensity of workers.
以上所述仅为本发明的实施例，并非是对本发明专利范围的限定。凡是利用本发明摘要、说明书及附图内容所作的等效结构或等效变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。 The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structures or equivalent transformations made by using the abstract, specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the scope of patent protection of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510406890.0A CN105033539A (en) | 2015-07-13 | 2015-07-13 | Fixture special for steel pipe flange welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510406890.0A CN105033539A (en) | 2015-07-13 | 2015-07-13 | Fixture special for steel pipe flange welding |
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| CN105033539A true CN105033539A (en) | 2015-11-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677596A (en) * | 2016-12-30 | 2017-05-17 | 苏州沃诺斯精密机械有限公司 | Steel pipe mounting equipment |
| CN106695225A (en) * | 2017-01-18 | 2017-05-24 | 成都国光电气股份有限公司 | Collector and exhaust pipe welding fixture |
| CN108544205A (en) * | 2018-06-15 | 2018-09-18 | 江苏宝地管业有限公司 | One kind being used for stainless-steel pipe auxiliary connecting device |
| CN112621098A (en) * | 2020-12-31 | 2021-04-09 | 惠州市鑫瑞盛源五金塑胶有限公司 | Pipe fitting positioning jig |
| CN112894188A (en) * | 2021-01-26 | 2021-06-04 | 任波 | Manufacturing and processing method of industrial chemical pipeline |
| CN114871683A (en) * | 2022-05-30 | 2022-08-09 | 北京城建集团有限责任公司 | Steel pipe flange connection construction process |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736286A (en) * | 1952-03-28 | 1956-02-28 | American Viscose Corp | Pipe and flange aligner |
| CN201231388Y (en) * | 2008-07-18 | 2009-05-06 | 大庆电业局 | Portable positioning bracket for welding tube and flange |
| CN102079050A (en) * | 2010-12-28 | 2011-06-01 | 成都飞机工业（集团）有限责任公司 | Dual-section clamping tool for fixing and positioning elbow parts |
| CN202137546U (en) * | 2011-06-16 | 2012-02-08 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Opening-to-opening centralizer for welding of pipelines |
| CN202377722U (en) * | 2011-11-28 | 2012-08-15 | 江苏中核利柏特股份有限公司 | Pipeline assembly welding platform |
| CN202412086U (en) * | 2011-12-01 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Combined tube part support clamp |
| CN203003406U (en) * | 2012-11-02 | 2013-06-19 | 浙江吉利罗佑发动机有限公司 | Cylindrical workpiece welding concentric locating device |
| CN203316979U (en) * | 2013-05-22 | 2013-12-04 | 安徽志拓管业有限公司 | Pressing plate mechanism of flange plate welding plate aligning device |
| CN203665002U (en) * | 2013-12-12 | 2014-06-25 | 中国石油化工股份有限公司 | Tool for rapidly assembling flange pup joints |
| CN203738288U (en) * | 2014-02-08 | 2014-07-30 | 潍柴动力股份有限公司 | Welding fixture special for long and thin rod workpieces |
| CN103990932A (en) * | 2013-02-14 | 2014-08-20 | 吉宝岸外与海事科技中心私人有限公司 | Device and method for aligning flange with pipe |
| CN204725075U (en) * | 2015-07-13 | 2015-10-28 | 济南大学 | A kind of steel pipe flange welding special fixture |
-
2015
- 2015-07-13 CN CN201510406890.0A patent/CN105033539A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736286A (en) * | 1952-03-28 | 1956-02-28 | American Viscose Corp | Pipe and flange aligner |
| CN201231388Y (en) * | 2008-07-18 | 2009-05-06 | 大庆电业局 | Portable positioning bracket for welding tube and flange |
| CN102079050A (en) * | 2010-12-28 | 2011-06-01 | 成都飞机工业（集团）有限责任公司 | Dual-section clamping tool for fixing and positioning elbow parts |
| CN202137546U (en) * | 2011-06-16 | 2012-02-08 | 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 | Opening-to-opening centralizer for welding of pipelines |
| CN202377722U (en) * | 2011-11-28 | 2012-08-15 | 江苏中核利柏特股份有限公司 | Pipeline assembly welding platform |
| CN202412086U (en) * | 2011-12-01 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Combined tube part support clamp |
| CN203003406U (en) * | 2012-11-02 | 2013-06-19 | 浙江吉利罗佑发动机有限公司 | Cylindrical workpiece welding concentric locating device |
| CN103990932A (en) * | 2013-02-14 | 2014-08-20 | 吉宝岸外与海事科技中心私人有限公司 | Device and method for aligning flange with pipe |
| CN203316979U (en) * | 2013-05-22 | 2013-12-04 | 安徽志拓管业有限公司 | Pressing plate mechanism of flange plate welding plate aligning device |
| CN203665002U (en) * | 2013-12-12 | 2014-06-25 | 中国石油化工股份有限公司 | Tool for rapidly assembling flange pup joints |
| CN203738288U (en) * | 2014-02-08 | 2014-07-30 | 潍柴动力股份有限公司 | Welding fixture special for long and thin rod workpieces |
| CN204725075U (en) * | 2015-07-13 | 2015-10-28 | 济南大学 | A kind of steel pipe flange welding special fixture |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677596A (en) * | 2016-12-30 | 2017-05-17 | 苏州沃诺斯精密机械有限公司 | Steel pipe mounting equipment |
| CN106677596B (en) * | 2016-12-30 | 2019-01-11 | 浙江瑞邦智能装备股份有限公司 | A steel pipe installation equipment |
| CN106695225A (en) * | 2017-01-18 | 2017-05-24 | 成都国光电气股份有限公司 | Collector and exhaust pipe welding fixture |
| CN108544205A (en) * | 2018-06-15 | 2018-09-18 | 江苏宝地管业有限公司 | One kind being used for stainless-steel pipe auxiliary connecting device |
| CN112621098A (en) * | 2020-12-31 | 2021-04-09 | 惠州市鑫瑞盛源五金塑胶有限公司 | Pipe fitting positioning jig |
| CN112894188A (en) * | 2021-01-26 | 2021-06-04 | 任波 | Manufacturing and processing method of industrial chemical pipeline |
| CN112894188B (en) * | 2021-01-26 | 2023-03-28 | 任波 | Manufacturing and processing method of industrial chemical pipeline |
| CN114871683A (en) * | 2022-05-30 | 2022-08-09 | 北京城建集团有限责任公司 | Steel pipe flange connection construction process |
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