CN219805579U - Flexible connecting mechanism for welding boiler barrels - Google Patents
Flexible connecting mechanism for welding boiler barrels Download PDFInfo
- Publication number
- CN219805579U CN219805579U CN202320058608.4U CN202320058608U CN219805579U CN 219805579 U CN219805579 U CN 219805579U CN 202320058608 U CN202320058608 U CN 202320058608U CN 219805579 U CN219805579 U CN 219805579U
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- 238000003466 welding Methods 0.000 title claims abstract description 52
- 239000012634 fragment Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model relates to the technical field of machines for welding drums, in particular to a flexible connecting mechanism for welding drums, which comprises a flexible component; the flexible assembly comprises a fixed plate, a first cylinder and a movable plate; the fixed plate is provided with a first cylinder and a movable plate along the two sides of the thickness direction respectively, and the fixed plate is provided with a through hole; the movable end of the first cylinder penetrates through the fixed plate and is hinged with one end face of the movable plate, which faces the fixed plate, in a ball mode; the movable plate is provided with the round platform towards one end face of the fixed plate, the small diameter end of the round platform penetrates through the through hole, the maximum diameter of the round platform is larger than or equal to the diameter of the through hole, and one end face of the movable plate away from the fixed plate is connected with the positioning shaft of the barrel welding robot. The utility model can compensate the angle deviation between the positioning shaft and the heat exchange tube to be welded, so that the positioning shaft is coaxial with the heat exchange tube to be welded.
Description
Technical Field
The utility model relates to the technical field of machines for welding drums, in particular to a flexible connecting mechanism for welding drums.
Background
The boiler barrel is a barrel-shaped pressure vessel which is used for steam-water separation and steam purification in a water pipe boiler, forms a water circulation loop and stores boiler water. The boiler barrel mainly comprises two rigid barrels with the radius of 0.5m to 1.2m and thousands of heat exchange pipes with the radius of 44mm to 55 mm. Because the connection part of the boiler barrel and the heat exchange tube is required to be completely sealed, circular seam welding is required to be carried out in the boiler barrel along the outer wall of the heat exchange tube. Traditional manual welding requires that a plurality of welders weld in the rigid cylinder one by one in turn, and the mode not only consumes manpower, is low in efficiency, has more constraint conditions, and can improve welding efficiency, so that robot welding is adopted.
The welding robot is used in the boiler barrel, the difficulty is that the pipe holes at different positions are required to be accurately positioned, the positioning shaft is required to be moved firstly in the welding process and then is stretched into the heat exchange pipes to be welded by the robot, the positioning shaft is used as the center of the circular seam of the welding gun to perform circular seam welding, however, the curved surface space in the boiler barrel cannot ensure that each heat exchange pipe is perpendicular to the inner wall of the curved surface, certain deviation exists, and then after the positioning shaft is positioned for many times, the axis of the positioning shaft of the robot cannot coincide with the axis of the heat exchange pipe due to error accumulation, so that the positioning shaft is blocked or the center of the circular seam of the welding gun is deviated, and the conditions of cold welding, missing welding and the like of the welding robot are caused.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the flexible connecting mechanism for welding the boiler barrel is provided, a positioning shaft of a robot can be coaxial with a heat exchange tube to be welded, and the welding quality of a circular seam is ensured.
In order to solve the technical problems, the utility model adopts the following technical scheme: a flexible connection mechanism for welding a boiler barrel comprises a flexible component; the flexible assembly comprises a fixed plate, a first cylinder and a movable plate;
the fixed plate is provided with a first cylinder and a movable plate along the two sides of the thickness direction respectively, and the fixed plate is provided with a through hole;
the movable end of the first cylinder penetrates through the fixed plate and is hinged with one end face of the movable plate, which faces the fixed plate, in a ball mode;
the movable plate is provided with the round platform towards one end face of the fixed plate, the small diameter end of the round platform penetrates through the through hole, the maximum diameter of the round platform is larger than or equal to the diameter of the through hole, and one end face of the movable plate away from the fixed plate is connected with the positioning shaft of the barrel welding robot.
The utility model has the beneficial effects that: the positioning shaft of the boiler barrel welding robot is connected with the flexible component, the movable plate is far away from the fixed plate by utilizing the first air cylinder, namely, the large-diameter end of the round table is led to exit from the through hole on the fixed plate, and meanwhile, the movable end of the first air cylinder is hinged with the movable plate ball, so that the movable plate can swing after being far away from the fixed plate, and the positioning shaft stretches into a heat exchange tube to be welded, so that the positioning shaft can be automatically aligned by utilizing the swing of the movable plate, and the positioning shaft is further coaxial with the heat exchange tube to be welded, so that the circumferential weld welding quality of the boiler barrel welding robot to the heat exchange tube is ensured.
Drawings
FIG. 1 is a schematic view of an application scenario of a flexible connection mechanism for drum welding in a specific embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a flexible connection mechanism for drum welding in accordance with one embodiment of the present utility model;
FIG. 3 is a schematic view of an assembled structure of a positioning shaft and an elastic component of a flexible connection mechanism for welding a boiler barrel according to the present utility model;
description of the reference numerals:
1. a flexible component; 11. a fixing plate; 111. a through hole; 12. a first cylinder; 13. a movable plate; 131. round bench;
2. positioning a shaft; 21. an expansion head; 22. an elastic component; 221. a collar; 222. a spring plate; 23. a spring;
3. a ball hinge assembly; 31. a support; 32. a connecting rod;
4. a limiting device; 41. a second cylinder; 42. a limiting plate; 43. and (5) abutting the sleeve.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a flexible connection mechanism for welding a boiler barrel according to the present utility model includes a flexible assembly 1; the flexible assembly 1 comprises a fixed plate 11, a first cylinder 12 and a movable plate 13;
the fixed plate 11 is provided with a first cylinder 12 and a movable plate 13 respectively along the two sides of the thickness direction, and the fixed plate 11 is provided with a through hole 111;
the movable end of the first air cylinder 12 passes through the fixed plate 11 and is in ball hinge joint with the movable plate 13 towards one end face of the fixed plate 11;
the movable plate 13 is provided with a round platform 131 on the terminal surface towards the fixed plate 11, the diameter-reducing end of round platform 131 passes through-hole 111, the maximum diameter of round platform 131 is greater than or equal to the diameter of through-hole 111, the terminal surface that the movable plate 13 kept away from fixed plate 11 is connected with the location axle 2 of drum welding robot.
From the above description, the beneficial effects of the utility model are as follows: the positioning shaft 2 of the boiler barrel welding robot is connected with the flexible component 1, the movable plate 13 is far away from the fixed plate 11 by utilizing the first air cylinder 12, namely, the large-diameter end of the round table 131 is led to exit from the through hole 111 on the fixed plate 11, and meanwhile, the movable end of the first air cylinder 12 is hinged with the movable plate 13, so that the movable plate 13 can swing after being far away from the fixed plate 11, and in the process that the positioning shaft 2 stretches into a heat exchange tube to be welded, the positioning shaft 2 can swing automatically by utilizing the swing of the movable plate 13, so that the positioning shaft 2 is coaxial with the heat exchange tube to be welded, and the circumferential seam welding quality of the boiler barrel welding robot to the heat exchange tube is ensured.
Further, the maximum extension of the movable end of the first cylinder 12 is smaller than the length of the circular table 131.
As can be seen from the above description, the round table 131 can be ensured to always pass through the fixed plate 11, so that the movable plate 13 cannot be made to approach the fixed plate 11 again after the movable plate 13 is far away from the fixed plate 11.
Referring to fig. 1 and 2, further, a ball hinge assembly 3 is disposed between the movable end of the first cylinder 12 and the movable plate 13; the ball hinge assembly 3 comprises a support 31 connected with the movable end of the first cylinder 12 and a connecting rod 32 connected with the movable plate 13 in a threaded manner, a ball cage is arranged on the support 31, a ball head is arranged on the connecting rod 32, and the ball head is rotatably arranged in the ball cage.
As is apparent from the above description, the movable plate 13 can swing in various directions after the movable plate 13 is separated from the fixed plate 11 by the ball hinge assembly 3 between the movable end of the first cylinder 12 and the movable plate 13.
As shown in fig. 1 and 2, further, a limiting device 4 is disposed at an end of the movable plate 13 away from the fixed plate 11, and the limiting device 4 includes a second cylinder 41, a limiting plate 42 and an abutment sleeve 43;
the two sides of the limiting plate 42 along the thickness direction are respectively provided with a second cylinder 41 and an abutting sleeve 43, the positioning shaft 2 is in relative sliding connection with the abutting sleeve 43, and one end of the positioning shaft 2 is connected with the movable end of the second cylinder 41; an expansion head 21 is arranged at one end of the positioning shaft 2 far away from the second air cylinder 41, and the diameter of the expansion head 21 is larger than that of the positioning shaft 2;
the shaft body of the positioning shaft 2 is sleeved with an elastic component 22, one end of the elastic component 22 is abutted against the abutting sleeve 43, the other end of the elastic component 22 is an elastic end, and the elastic end extends towards the direction of the expansion head 21.
As can be seen from the above description, after the positioning shaft 2 extends into the heat exchange tube to be welded, the second cylinder 41 pulls the positioning shaft 2 to move towards the limiting plate 42, and the elastic component 22 cannot move with the positioning shaft 2 due to the limitation of the abutting sleeve 43, so that the elastic end of the elastic component 22 deforms under the action of the expansion head 21, so that the elastic end of the elastic component 22 is tightly attached to the inner wall of the heat exchange tube to be welded, thereby fixing the positioning shaft 2 in the heat exchange tube to be welded, and further avoiding the positioning shaft 2 from moving during the welding process to affect the welding quality.
Referring to fig. 3, further, the elastic assembly 22 includes a collar 221 and a plurality of elastic pieces 222 circumferentially disposed along an outline of the collar 221, the collar 221 is sleeved on the shaft body of the positioning shaft 2, the collar 221 abuts against the abutment sleeve 43, the collar 221 is circumferentially disposed with an assembly groove along an outline, and one end of the elastic piece 222 is disposed in the assembly groove.
As can be seen from the above description, in the process of fixing the positioning shaft 2, the expansion head 21 expands the elastic sheet 222, so that the elastic sheet 222 is tightly attached to the inner wall of the heat exchange tube to be welded, and the positioning shaft 2 is fixed in the heat exchange tube.
The elastic piece 222 is mounted to the collar 221 through the fitting groove so that when a part of the elastic piece 222 is damaged, the damaged elastic piece 222 can be replaced, thereby eliminating the need to replace the entire elastic assembly 22.
As shown in fig. 3, a spring 23 is further sleeved on the shaft body of the positioning shaft 2, one end of the spring 23 is abutted against the collar 221, and the other end of the spring 23 is abutted against the expansion head 21.
As can be seen from the above description, the spring 23 can buffer the impact of the expansion head 21 on the elastic piece 222, so as to prolong the service life of the elastic piece 222.
Further, the end of the expansion head 21 remote from the second cylinder 41 is provided with a chamfer.
As is apparent from the above description, providing the chamfer on the expansion head 21 can facilitate the expansion head 21 to be inserted into the heat exchange tube to be welded for positioning.
The utility model relates to an application scene of a flexible connecting mechanism for welding a boiler barrel, which comprises the following steps: when the positioning shaft 2 is required to accurately extend into the heat exchange tube to be welded, the positioning shaft 2 of the boiler barrel welding robot is connected with the flexible component 1, the movable plate 13 is far away from the fixed plate 11 by utilizing the first air cylinder 12, namely, the large-diameter end of the round table 131 is led to exit from the through hole 111 on the fixed plate 11, and meanwhile, the movable end of the first air cylinder 12 is hinged with the movable plate 13 in a ball mode, and then the movable plate 13 can swing after being far away from the fixed plate 11, so that the positioning shaft 2 can automatically swing by utilizing the swing of the movable plate 13 in the process of extending the positioning shaft 2 into the heat exchange tube to be welded, and the positioning shaft 2 is further coaxial with the heat exchange tube to be welded, so that the circular seam welding quality of the boiler barrel welding robot to the heat exchange tube is ensured.
Example 1
A flexible connection mechanism for welding a boiler barrel, as shown in fig. 1 and 2, comprises a flexible component 1; the flexible assembly 1 comprises a fixed plate 11, a first cylinder 12 and a movable plate 13; the fixed plate 11 is provided with a first cylinder 12 and a movable plate 13 respectively along the two sides of the thickness direction, and the fixed plate 11 is provided with a through hole 111; the movable end of the first air cylinder 12 passes through the fixed plate 11 and is in ball hinge joint with the movable plate 13 towards one end face of the fixed plate 11; the movable plate 13 is provided with a round platform 131 on the terminal surface towards the fixed plate 11, the diameter-reducing end of round platform 131 passes through-hole 111, the maximum diameter of round platform 131 is greater than or equal to the diameter of through-hole 111, the terminal surface that the movable plate 13 kept away from fixed plate 11 is connected with the location axle 2 of drum welding robot. The maximum extension of the movable end of the first cylinder 12 is smaller than the length of the circular table 131. A spherical hinge assembly 3 is arranged between the movable end of the first cylinder 12 and the movable plate 13; the ball hinge assembly 3 comprises a support 31 connected with the movable end of the first cylinder 12 and a connecting rod 32 connected with the movable plate 13 in a threaded manner, a ball cage is arranged on the support 31, a ball head is arranged on the connecting rod 32, and the ball head is rotatably arranged in the ball cage.
Referring to fig. 1 to 3, a limiting device 4 is disposed at an end of the movable plate 13 away from the fixed plate 11, and the limiting device 4 includes a second cylinder 41, a limiting plate 42 and an abutment sleeve 43; the two sides of the limiting plate 42 along the thickness direction are respectively provided with a second cylinder 41 and an abutting sleeve 43, the positioning shaft 2 is in relative sliding connection with the abutting sleeve 43, and one end of the positioning shaft 2 is connected with the movable end of the second cylinder 41; an expansion head 21 is arranged at one end of the positioning shaft 2 far away from the second air cylinder 41, and the diameter of the expansion head 21 is larger than that of the positioning shaft 2; the shaft body of the positioning shaft 2 is sleeved with an elastic component 22, one end of the elastic component 22 is abutted against the abutting sleeve 43, the other end of the elastic component 22 is an elastic end, and the elastic end extends towards the direction of the expansion head 21. The elastic component 22 includes the lantern ring 221 and a plurality of shell fragment 222 that set up along lantern ring 221 profile circumference, the lantern ring 221 cover is established on the shaft body of locating shaft 2, just the lantern ring 221 and butt cover 43 looks butt, the lantern ring 221 sets up the assembly groove along outer profile circumference, the one end of shell fragment 222 sets up in the assembly groove. The shaft body of the positioning shaft 2 is sleeved with a spring 23, one end of the spring 23 is abutted against the collar 221, and the other end of the spring 23 is abutted against the expansion head 21. The end of the expansion head 21 remote from the second cylinder 41 is provided with a chamfer.
Working principle: when the positioning shaft 2 is required to accurately extend into the heat exchange tube to be welded, the movable end extends out of the first cylinder 12, so that the movable plate 13 is far away from the fixed plate 11, and the limiting device 4 connected with the positioning shaft 2 moves towards the direction of the heat exchange tube to be welded; because the big diameter end of round platform 131 withdraws from through-hole 111 on fixed plate 11 to be connected through ball hinge assembly 3 between the expansion end of first cylinder 12 and the fly leaf 13, consequently fly leaf 13 can take place the swing to each direction after keeping away from fixed plate 11, and then locating shaft 2 when stretching into the heat exchange tube that waits to weld, if contradict with waiting to weld the heat exchange tube inner wall, fly leaf 13 can send out by oneself and take place corresponding swing for locating shaft 2 can be smooth and easy deep into waiting to weld the heat exchange tube, and then let locating shaft 2 and waiting to weld the heat exchange tube coaxial.
After the positioning shaft 2 stretches into the heat exchange tube to be welded, the positioning shaft 2 is pulled by the second cylinder 41 to move towards the limiting plate 42, the collar 221 of the elastic assembly 22 cannot move with the positioning shaft 2 due to the limitation of the abutting sleeve 43, and then the elastic piece 222 of the elastic assembly 22 can be expanded by the expansion head 21, so that the elastic piece 222 is tightly attached to the inner wall of the heat exchange tube to be welded, and the fixing of the positioning shaft 2 in the heat exchange tube is completed.
After the welding is completed, the second cylinder 41 extends out of the movable end, so that the positioning shaft 2 moves away from the limiting plate 42, the elastic sheet 222 is restored to the original state, then the first cylinder 12 withdraws the movable end, so that the movable plate 13 moves towards the fixed plate 11, the large-diameter end of the round table 131 is matched with the through hole 111 on the fixed plate 11, and the limiting device 4 and the positioning shaft 2 withdraw from the heat exchange tube. Since the maximum diameter of the round table 131 is greater than or equal to the diameter of the through hole 111, the movable plate 13 cannot move after the large diameter end of the round table 131 is matched with the through hole 111, so that the positioning shaft 2 cannot swing due to the influence of gravity after the positioning shaft 2 swings for a certain angle by the drum welding robot and the positioning shaft 2 faces the pipe orifice of another heat exchange pipe to be welded.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (7)
1. A flexible coupling mechanism for boiler barrel welding, its characterized in that: comprises a flexible component; the flexible assembly comprises a fixed plate, a first cylinder and a movable plate;
the fixed plate is provided with a first cylinder and a movable plate along the two sides of the thickness direction respectively, and the fixed plate is provided with a through hole;
the movable end of the first cylinder penetrates through the fixed plate and is hinged with one end face of the movable plate, which faces the fixed plate, in a ball mode;
the movable plate is provided with the round platform towards one end face of the fixed plate, the small diameter end of the round platform penetrates through the through hole, the maximum diameter of the round platform is larger than or equal to the diameter of the through hole, and one end face of the movable plate away from the fixed plate is connected with the positioning shaft of the barrel welding robot.
2. The flexible connection unit for drum welding as claimed in claim 1, wherein: the maximum extension of the movable end of the first cylinder is smaller than the length of the round table.
3. The flexible connection unit for drum welding as claimed in claim 1, wherein: a spherical hinge assembly is arranged between the movable end of the first cylinder and the movable plate; the ball hinge assembly comprises a support for connecting the movable end of the first cylinder and a connecting rod for connecting the movable plate through threads, a ball cage is arranged on the support, a ball head is arranged on the connecting rod, and the ball head is rotatably arranged in the ball cage.
4. The flexible connection unit for drum welding as claimed in claim 1, wherein: a limiting device is arranged at one end of the movable plate, which is far away from the fixed plate, and comprises a second cylinder, a limiting plate and an abutting sleeve;
the two sides of the limiting plate in the thickness direction are respectively provided with a second cylinder and an abutting sleeve, the positioning shaft is in relative sliding connection with the abutting sleeve, and one end of the positioning shaft is connected with the movable end of the second cylinder; an expansion head is arranged at one end of the positioning shaft, which is far away from the second cylinder, and the diameter of the expansion head is larger than that of the positioning shaft;
the shaft body of the positioning shaft is sleeved with an elastic component, one end of the elastic component is abutted against the abutting sleeve, the other end of the elastic component is an elastic end, and the elastic end extends towards the direction of the expansion head.
5. The flexible connection unit for drum welding as claimed in claim 4, wherein: the elastic component includes the lantern ring and a plurality of shell fragment that set up along lantern ring profile circumference, the lantern ring cover is established on the shaft body of locating shaft, just the lantern ring with butt cover looks butt, the lantern ring sets up the assembly groove along outer profile circumference, the one end setting of shell fragment is in the assembly groove.
6. The flexible connection unit for drum welding as claimed in claim 5, wherein: the shaft body of the positioning shaft is sleeved with a spring, one end of the spring is abutted against the lantern ring, and the other end of the spring is abutted against the expansion head.
7. The flexible connection unit for drum welding as claimed in claim 4, wherein: one end of the expansion head, which is far away from the second cylinder, is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320058608.4U CN219805579U (en) | 2023-01-09 | 2023-01-09 | Flexible connecting mechanism for welding boiler barrels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320058608.4U CN219805579U (en) | 2023-01-09 | 2023-01-09 | Flexible connecting mechanism for welding boiler barrels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219805579U true CN219805579U (en) | 2023-10-10 |
Family
ID=88214118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320058608.4U Active CN219805579U (en) | 2023-01-09 | 2023-01-09 | Flexible connecting mechanism for welding boiler barrels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219805579U (en) |
-
2023
- 2023-01-09 CN CN202320058608.4U patent/CN219805579U/en active Active
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