CN114571394A - Special tool for assembling industrial furnace conversion furnace tube and flange - Google Patents
Special tool for assembling industrial furnace conversion furnace tube and flange Download PDFInfo
- Publication number
- CN114571394A CN114571394A CN202210372818.0A CN202210372818A CN114571394A CN 114571394 A CN114571394 A CN 114571394A CN 202210372818 A CN202210372818 A CN 202210372818A CN 114571394 A CN114571394 A CN 114571394A
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- rotating rod
- flange
- fixing sleeve
- rod
- driving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a special tool for assembling a conversion furnace tube and a flange of an industrial furnace, which comprises a rotating rod, a rotating rod fixing sleeve, a driving nut, a locking nut, a driving mechanism and a crank; the rotating rod fixing sleeve is sleeved on the rotating rod, the crank is installed at one end of the rotating rod, a screw rod is arranged between the crank and the rotating rod fixing sleeve, a locking nut is screwed on the screw rod, the screw rod is prevented from reversing when the locking nut abuts against one end of the rotating rod fixing sleeve, the screw rod is arranged on the rotating rod at the other end of the rotating rod fixing sleeve, and the driving nut is screwed on the screw rod; the driving mechanism is movably connected to the rotating rod fixing sleeve and the driving nut, and the diameter of a supporting circle formed by the driving mechanism is changed to be reduced or enlarged by the driving nut moving forwards or backwards on the screw rod. The invention can simultaneously ensure the concentric positioning precision of the installation aiming at the furnace tube and the flange; the operation can be carried out by one person, the cost is saved by 600 ten thousand yuan per year, and the device can adapt to different product pipe diameters; simple structure, the self-control is convenient, has reduced the group to personnel, raises the efficiency, reduce cost.
Description
Technical Field
The invention relates to a special tool for assembling a reforming furnace tube and a flange of an industrial furnace, belonging to the technical field of tool equipment.
Background
The industrial furnace converter tube is formed by welding a furnace tube and a flange, each workpiece needs to have certain high-temperature strength, and materials such as 20Cr-32Ni-Nb \1Cr5Mo/ZGCr25Ni35NbTi and the like are generally selected, so that the industrial furnace converter tube has high requirements on welding quality. Wherein, the methodThe welding technical requirement can be met only when the single-side staggered amount of the flange and the furnace tube is less than or equal to 0.25 mm. In the actual production of our company, the produced furnace tube has the diameter of
To
The sizes of the flanges are correspondingly different, and the production process is difficult to design to meet the requirement of the stagger amount.
The existing production process of pairing the furnace tube and the flange comprises the following steps: firstly, one person lifts the flange, the other person touches the flange and the furnace tube by hand through visual measurement, and the flange and the furnace tube are positioned by the third person through rapid spot welding. Because the conversion pipe flange specification is many, and weight is heavy, and production is big in batches, and current group is to the process inefficiency, and the personnel selection is many, has not only increased the manufacturing cost of product, and the precision is poor moreover, and production efficiency is low, can't satisfy the production progress requirement.
Disclosure of Invention
In order to overcome the difficulties, the company organizes research and development teams to discuss, finally determines and designs a tool capable of meeting the group precision requirement, and the tool still needs to have adaptability to meet the requirements of different furnace tube diameters and solve the problems of labor selection and production efficiency. Finally, a research and development team designs a special tool for assembling the industrial furnace conversion furnace tube and the flange, aiming at the requirements of quality assurance, efficiency improvement and cost reduction, the high-quality and high-efficiency guarantee of the assembly welding of the furnace tube and the flange, the assembly personnel are reduced, the assembly process is optimized, the purpose that one person can assemble the furnace tube flange of any specification is achieved, and the working time cost is greatly saved.
In order to achieve the purpose, the technical means adopted by the invention is as follows: the special tool for assembling the industrial furnace conversion tube and the flange comprises a rotating rod, a rotating rod fixing sleeve, a driving nut, a locking nut, a driving mechanism and a crank;
the rotating rod fixing sleeve is sleeved on the rotating rod, the crank is installed at one end of the rotating rod, a screw rod is arranged between the crank and the rotating rod fixing sleeve, a locking nut is screwed on the screw rod, the screw rod is prevented from being reversed when the locking nut abuts against one end of the rotating rod fixing sleeve, the screw rod is arranged on the rotating rod at the other end of the rotating rod fixing sleeve, and the driving nut is screwed on the screw rod at the section;
the driving mechanism is movably connected to the rotating rod fixing sleeve and the driving nut, and the diameter of a supporting circle formed by the driving mechanism is changed to be reduced or enlarged by the driving nut moving forwards or backwards on the screw rod.
Furthermore, the driving mechanism consists of three groups of connecting rod structures, each connecting rod structure comprises two driven rods respectively hinged to two ends of the outer wall of the rotating rod fixing sleeve, one positioning rod with two ends respectively hinged to the two driven rods, and one driving rod with one end hinged to the positioning rod and the driven rod and the other end hinged to the driving nut; the positioning rods of the three groups of connecting rod structures are parallel to each other, and the three positioning rods are parallel to the rotating rod and are uniformly distributed by taking the rotating rod as a central shaft.
Furthermore, the assembling method of the special tool for assembling the industrial furnace conversion tube and the flange comprises the following steps: sleeving a flange on three groups of connecting rod structures of a driving mechanism, rotating a crank, inserting the flange and the three groups of connecting rod structures into a furnace tube when a 1mm gap is reserved, rotating the crank to enable the three groups of connecting rod structures to be tightly attached to the flange and the inner wall of the furnace tube, screwing a locking nut, and after the locking nut is locked, forming a stable supporting circle by three positioning rods and concentrically positioning the flange and the furnace tube; and (5) spot welding the flange and the furnace tube to finish assembly.
The invention has the beneficial effects that: the three positioning rods are uniformly distributed by taking the rotating rod as a central shaft and are parallel to the rotating rod to form a supporting circle which can simultaneously aim at the furnace tube and the flange, so that the concentric positioning accuracy of installation is ensured; the operation can be carried out by one person, the yield per shift is improved to be 15 times of the original yield per shift, and the cost is saved by 600 ten thousand yuan per year; the nut is driven to move forwards and backwards conveniently and rapidly to change the diameter of the supporting circle through the crank operation, so that the device can adapt to different product pipe diameters; the tool is simple in structure and convenient to self-manufacture, the assembling process is optimized, the product quality can be guaranteed, assembling personnel are reduced, the efficiency is improved, and the cost is reduced.
Drawings
The invention is further elucidated with reference to the drawings and embodiments.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the present invention.
In the figure: 1. the furnace tube comprises a rotating rod, 2, a rotating rod fixing sleeve, 3, a driving nut, 4, a locking nut, 5, a crank, 6, a driven rod, 7, a positioning rod, 8, a driving rod, 9, a flange, 10 and a furnace tube.
Detailed Description
The special tool for assembling the industrial furnace reformer tube and the flange shown in fig. 1 and 2 comprises a rotating rod 1, a rotating rod fixing sleeve 2, a driving nut 3, a locking nut 4, a driving mechanism and a crank 5;
the rotating rod fixing sleeve 2 is sleeved on the rotating rod 1, the crank 5 is installed at one end of the rotating rod 1, a screw rod is arranged between the crank 5 and the rotating rod fixing sleeve 2, the locking nut 4 is in threaded connection with the screw rod, the screw rod is prevented from being reversed when the locking nut 4 abuts against one end of the rotating rod fixing sleeve, the screw rod is arranged on the rotating rod at the other end of the rotating rod fixing sleeve 2, and the driving nut 3 is in threaded connection with the screw rod at the section; the driving mechanism consists of three groups of connecting rod structures, each connecting rod structure comprises two driven rods 6 respectively hinged to two ends of the outer wall of the rotating rod fixing sleeve 2, a positioning rod 7 with two ends respectively hinged to the two driven rods 6, and a driving rod 8 with one end hinged to the positioning rod 7 and the driven rod 6 and the other end hinged to the driving nut 3; the positioning rods 7 of the three groups of connecting rod structures are parallel to each other, and the three positioning rods 7 are parallel to the rotating rod 1 and are uniformly distributed by taking the rotating rod 1 as a central shaft.
The driving mechanism is movably connected to the rotating rod fixing sleeve 2 and the driving nut 3, and the diameter of a supporting circle formed by the driving mechanism is changed to be reduced or enlarged by the forward or backward movement of the driving nut 3 on the screw rod.
The assembly method of the special tool for the assembly of the industrial furnace reformer tube and the flange comprises the following steps: firstly, sleeving a flange 9 on three groups of connecting rod structures of a driving mechanism, rotating a crank 5, inserting the flange 9 and the three groups of connecting rod structures into a furnace tube 10 when a 1mm gap is reserved, rotating the crank 5 to enable the three groups of connecting rod structures to be tightly attached to the flange 9 and the inner wall of the furnace tube 10, screwing a locking nut 4, and after the locking nut 4 is locked, forming a stable supporting circle by three positioning rods 7 and enabling the flange 9 and the furnace tube 10 to be concentrically positioned; and spot welding the flange 9 and the furnace tube 10 to finish assembly.
Before the tool is not used, three persons manually assemble a flange and a furnace tube, only 40 pieces can be assembled in each shift, after the positioning device is used, 200 pieces can be assembled in each shift by one person, the efficiency in each shift is improved by 15 times, the working hour cost is saved by 30 yuan for each piece, and if 10 thousands of pieces are calculated per year, the working hour cost can be saved by 300 thousands yuan per year. Before the tool is not used, after manual assembly welding, repair and waste products often occur due to the fact that the misalignment is out of tolerance, the qualified rate of one-time assembly is less than 90%, after the tool is used, the qualified rate of one-time assembly reaches 100%, the cost caused by the misalignment, disqualification, polishing difficulty and other problems is reduced, the cost is calculated according to 300 yuan 10%, and 300 ten thousand yuan can be saved every year. The two items add up to save the cost of an enterprise by 600 ten thousand yuan, and great economic benefit is generated.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention.
Claims (3)
1. The group of industrial furnace reformer tube and flange is to special frock, its characterized in that: comprises a rotating rod, a rotating rod fixing sleeve, a driving nut, a locking nut, a driving mechanism and a crank; the rotating rod fixing sleeve is sleeved on the rotating rod, the crank is installed at one end of the rotating rod, a screw rod is arranged between the crank and the rotating rod fixing sleeve, a locking nut is screwed on the screw rod, the screw rod is prevented from being reversed when the locking nut abuts against one end of the rotating rod fixing sleeve, the screw rod is arranged on the rotating rod at the other end of the rotating rod fixing sleeve, and the driving nut is screwed on the screw rod at the section; the driving mechanism is movably connected to the rotating rod fixing sleeve and the driving nut, and the diameter of a supporting circle formed by the driving mechanism is changed to be reduced or enlarged by the driving nut moving forwards or backwards on the screw rod.
2. The special tool for assembling the industrial furnace reforming tube and the flange according to claim 1, which is characterized in that: the driving mechanism consists of three groups of connecting rod structures, each connecting rod structure comprises two driven rods respectively hinged to two ends of the outer wall of the rotating rod fixing sleeve, a positioning rod with two ends respectively hinged to the two driven rods, and a driving rod with one end hinged to the positioning rod and the driven rod and the other end hinged to the driving nut; the positioning rods of the three groups of connecting rod structures are parallel to each other, and the three positioning rods are parallel to the rotating rod and are uniformly distributed by taking the rotating rod as a central shaft.
3. The assembly method of the special tool for the assembly of the industrial furnace reformer tube and the flange according to claim 1, characterized by comprising the following steps: sleeving a flange on three groups of connecting rod structures of a driving mechanism, rotating a crank, inserting the flange and the three groups of connecting rod structures into a furnace tube when a 1mm gap is reserved, rotating the crank to enable the three groups of connecting rod structures to be tightly attached to the flange and the inner wall of the furnace tube, screwing a locking nut, and after the locking nut is locked, forming a stable supporting circle by three positioning rods and concentrically positioning the flange and the furnace tube; and (5) spot welding the flange and the furnace tube to finish assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210372818.0A CN114571394A (en) | 2022-04-11 | 2022-04-11 | Special tool for assembling industrial furnace conversion furnace tube and flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210372818.0A CN114571394A (en) | 2022-04-11 | 2022-04-11 | Special tool for assembling industrial furnace conversion furnace tube and flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114571394A true CN114571394A (en) | 2022-06-03 |
Family
ID=81785623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210372818.0A Pending CN114571394A (en) | 2022-04-11 | 2022-04-11 | Special tool for assembling industrial furnace conversion furnace tube and flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114571394A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001058290A (en) * | 1999-08-20 | 2001-03-06 | Marui:Kk | Jig for fitting flange at right angle to tube end part |
| CN201283489Y (en) * | 2008-09-19 | 2009-08-05 | 吴浩冉 | Triangular backup flange centering centralizer |
| CN205888470U (en) * | 2016-06-16 | 2017-01-18 | 山西天波制泵股份有限公司 | Three -jaw centering internal stay fixture |
| CN108637584A (en) * | 2018-07-27 | 2018-10-12 | 刘方圆 | A kind of flange welding automatic centering fixture |
| CN109570894A (en) * | 2018-12-27 | 2019-04-05 | 苏州海陆重工股份有限公司 | Flange tube socket welds auxiliary mould |
| CN110480251A (en) * | 2019-09-11 | 2019-11-22 | 襄阳中和机电技术有限公司 | A kind of flange adapting to more specifications and steel pipe fixed-position welding device |
| CN212443937U (en) * | 2020-06-16 | 2021-02-02 | 鲁西工业装备有限公司 | Pipe connecting flange assembling device |
-
2022
- 2022-04-11 CN CN202210372818.0A patent/CN114571394A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001058290A (en) * | 1999-08-20 | 2001-03-06 | Marui:Kk | Jig for fitting flange at right angle to tube end part |
| CN201283489Y (en) * | 2008-09-19 | 2009-08-05 | 吴浩冉 | Triangular backup flange centering centralizer |
| CN205888470U (en) * | 2016-06-16 | 2017-01-18 | 山西天波制泵股份有限公司 | Three -jaw centering internal stay fixture |
| CN108637584A (en) * | 2018-07-27 | 2018-10-12 | 刘方圆 | A kind of flange welding automatic centering fixture |
| CN109570894A (en) * | 2018-12-27 | 2019-04-05 | 苏州海陆重工股份有限公司 | Flange tube socket welds auxiliary mould |
| CN110480251A (en) * | 2019-09-11 | 2019-11-22 | 襄阳中和机电技术有限公司 | A kind of flange adapting to more specifications and steel pipe fixed-position welding device |
| CN212443937U (en) * | 2020-06-16 | 2021-02-02 | 鲁西工业装备有限公司 | Pipe connecting flange assembling device |
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