CN219725129U - Offset compensation connection mechanism for welding of boiler barrels - Google Patents
Offset compensation connection mechanism for welding of boiler barrels Download PDFInfo
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- CN219725129U CN219725129U CN202320059407.6U CN202320059407U CN219725129U CN 219725129 U CN219725129 U CN 219725129U CN 202320059407 U CN202320059407 U CN 202320059407U CN 219725129 U CN219725129 U CN 219725129U
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- 238000003466 welding Methods 0.000 title claims abstract description 55
- 210000000078 claw Anatomy 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
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- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of machines for welding drums, in particular to an offset compensation connecting mechanism for welding drums, which comprises a compensation component and a clamp; the compensation component comprises a mounting frame, an air cylinder, a fixed rod and a movable rod; the cylinder is arranged on the mounting frame, one end of the fixed rod is connected with the movable end of the cylinder, one end of the fixed rod, which is far away from the cylinder, is in ball hinge joint with one end of the movable rod, and one end of the movable rod, which is far away from the fixed rod, is connected with the positioning shaft of the barrel welding robot; the fixture is arranged on the mounting frame and is used for clamping the rod body of the movable rod, and when the movable rod is clamped by the fixture, the movable rod is coaxial with the fixed rod. The utility model can compensate the offset between the positioning shaft and the heat exchange tube to be welded, so that the positioning shaft and the heat exchange tube to be welded are coaxial.
Description
Technical Field
The utility model relates to the technical field of machines for welding drums, in particular to an offset compensation joint 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 offset compensation connection mechanism for the boiler barrel welding is capable of enabling a positioning shaft of a robot to be coaxial with a heat exchange tube to be welded and guaranteeing the girth welding quality.
In order to solve the technical problems, the utility model adopts the following technical scheme: an offset compensation connection mechanism for welding a boiler barrel comprises a compensation component and a clamp; the compensation component comprises a mounting frame, an air cylinder, a fixed rod and a movable rod;
the cylinder is arranged on the mounting frame, one end of the fixed rod is connected with the movable end of the cylinder, one end of the fixed rod, which is far away from the cylinder, is in ball hinge joint with one end of the movable rod, and one end of the movable rod, which is far away from the fixed rod, is connected with the positioning shaft of the barrel welding robot;
the fixture is arranged on the mounting frame and is used for clamping the rod body of the movable rod, and when the movable rod is clamped by the fixture, the movable rod is coaxial with the fixed rod.
The utility model has the beneficial effects that: the positioning shaft of the boiler barrel welding robot is connected with the compensation component, the cylinder stretches out of the movable end to enable the fixed rod, the movable rod and the positioning shaft to move towards the direction of the heat exchange tube to be welded, and the positioning shaft is in spherical hinge connection with the fixed rod in the process of stretching into the heat exchange tube to be welded, so that the positioning shaft can self-compensate offset between the positioning shaft and the heat exchange tube to be welded by utilizing the swing of the movable rod, and the positioning shaft is coaxial with the heat exchange tube to be welded. After the cylinder withdraws the movable end to enable the positioning shaft to withdraw from the heat exchange tube, the movable rod can be clamped by the clamp, and the movable rod is coaxial with the fixed rod, so that the activity of the movable rod can be effectively controlled, and the positioning shaft can be in an initial state when the boiler barrel welding robot is used for replacing another heat exchange tube to be welded for positioning, so that the next time of extending into the heat exchange tube to be welded is facilitated.
Drawings
FIG. 1 is a schematic view of an application scenario of an offset compensation joint mechanism for boiler barrel welding according to a first embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an offset compensation fitting for drum welding according to a first embodiment of the present utility model;
FIG. 3 is a schematic view of a clamp structure of an offset compensation joint mechanism for drum welding according to a first embodiment of the present utility model;
fig. 4 is a schematic structural diagram of an application scenario of an offset compensation connection mechanism for welding a boiler barrel according to a second embodiment of the present utility model;
FIG. 5 is a schematic cross-sectional view of an offset compensation fitting for drum welding according to a second embodiment of the present utility model;
FIG. 6 is a schematic view of a fixture for a shift compensation joint mechanism for drum welding according to a second embodiment of the present utility model;
description of the reference numerals:
1. a compensation component; 11. a mounting frame; 12. a cylinder; 13. a fixed rod; 14. a movable rod;
2. a clamp; 21. thin type air claw; 22. a clamping piece; 221. a chuck; 23. a motor;
24. a gear assembly; 241. a drive gear; 242. a first rack; 243. a second rack;
3. a limit sleeve; 4. and positioning the shaft.
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 or 4, the offset compensation connection mechanism for welding a boiler barrel of the present utility model includes a compensation component 1 and a clamp 2; the compensation assembly 1 comprises a mounting frame 11, a cylinder 12, a fixed rod 13 and a movable rod 14;
the cylinder 12 is arranged on the mounting frame 11, one end of the fixed rod 13 is connected with the movable end of the cylinder 12, one end of the fixed rod 13 far away from the cylinder 12 is in ball hinge joint with one end of the movable rod 14, and one end of the movable rod 14 far away from the fixed rod 13 is connected with the positioning shaft 4 of the barrel welding robot;
the clamp 2 is arranged on the mounting frame 11, the clamp 2 is used for clamping a rod body of the movable rod 14, and the movable rod 14 is coaxial with the fixed rod 13 when the movable rod 14 is clamped by the clamp 2.
From the above description, the beneficial effects of the utility model are as follows: the positioning shaft 4 of the boiler barrel welding robot is connected with the compensation component 1, the movable end is extended out by the air cylinder 12 to enable the fixed rod 13, the movable rod 14 and the positioning shaft 4 to move towards the direction of the heat exchange tube to be welded, and in the process of extending into the heat exchange tube to be welded, the positioning shaft 4 is in spherical hinge connection with the fixed rod 13, so that the positioning shaft 4 can self-compensate the offset between the positioning shaft 4 and the heat exchange tube to be welded by utilizing the swing of the movable rod 14, and the positioning shaft 4 is coaxial with the heat exchange tube to be welded. After the cylinder 12 withdraws the movable end to enable the positioning shaft 4 to withdraw from the heat exchange tube, the movable rod 14 can be clamped by the clamp 2, and the movable rod 14 is coaxial with the fixed rod 13, so that the activity of the movable rod 14 can be effectively controlled, and the positioning shaft 4 can be ensured to be in an initial state when the boiler barrel welding robot is used for replacing another heat exchange tube to be welded for positioning, so that the heat exchange tube to be welded can be conveniently stretched into next time.
Referring to fig. 1 to 3, further, the clamp 2 includes a thin air jaw 21 and a clip; the thin gas claw 21 is arranged on the mounting frame 11, the clamp is provided with a working end and an operating end, the operating end is used for controlling the working end to clamp the movable rod 14, and the operating end is hinged with the movable end of the thin gas claw 21.
Further, the clip comprises two clamping pieces 22, the middle parts of the two clamping pieces 22 are hinged to each other, one end of each clamping piece 22 is provided with a clamping head 221 which is abutted against the rod body of the movable rod 14, and the other end of each clamping piece 22 is hinged to the movable end of the thin gas claw 21.
As can be seen from the above description, the thin gas claw 21 can control the open/close state of the clamping heads 221 on the two clamping pieces 22.
Referring to fig. 4 to 6, further, the clamp 2 includes a motor 23, a gear assembly 24 and a clip; the motor 23 is arranged on the mounting frame 11, the gear assembly 24 has an input end and an output end, the input end is connected with the output shaft of the motor 23, the clamp has a working end and an operating end, and the gear assembly is provided with a gear assembly
The operating end is used for controlling the working end to clamp the movable rod 14, and the operating end is hinged with the output end of the gear assembly 240.
Further, the gear assembly 24 includes a drive gear 241, a first rack 242, and a second rack 243; the driving gear 241 is connected with an output shaft of the motor 23, the first rack 242 and the second rack 243 are slidably arranged on the mounting frame 11, and the first rack 242 and the second rack 243 are oppositely arranged and meshed with the driving gear 241;
5 the clip comprises two clamping pieces 22, the middle parts of the two clamping pieces 22 are hinged with each other, and the clamping pieces 22
A clamping head 221 abutting against the shaft of the movable rod 14 is provided at one end of the clamping piece 22, and the other ends of the two clamping pieces 22 are respectively hinged with a first rack 242 and a second rack 243.
As can be seen from the above description, the motor 23 rotates the driving gear 241, so that the first rack 242 and the second rack 243 move on the mounting frame 11, and the clamping heads 221 on the two clamping pieces 22 are controlled to open and close to the 0 state.
Referring to fig. 1 or fig. 4, the device further includes a stop collar 3, wherein the stop collar 3 is sleeved outside the movable rod 14, and a movable gap is formed between the inner wall of the stop collar 3 and the movable rod 14.
As is apparent from the above description, the movable range of the movable rod 14 can be controlled by the spacer 3.
Further, the end of the positioning shaft 4 away from the movable rod 14 is provided with a chamfer.
As can be seen from the description above, providing the positioning shaft 4 with a chamfer can facilitate the positioning shaft 4 to extend into the heat exchange tube to be welded for positioning.
The utility model relates to an application scene of an offset compensation connection mechanism for welding a boiler barrel, which comprises the following steps: when the positioning shaft 4 is required to accurately extend into the heat exchange tube to be welded, the positioning shaft 4 of the boiler barrel welding robot is connected with the compensation component 1, the movable end is extended by the air cylinder 12 to enable the fixed rod 13, the movable rod 14 and the positioning shaft 4 to move towards the direction of the heat exchange tube to be welded, and in the process of extending into the heat exchange tube to be welded, the positioning shaft 4 is in spherical hinge connection with the fixed rod 13 due to the fact that the movable rod 14 is in spherical hinge connection with the fixed rod 13, the positioning shaft 4 swings by the aid of the movable rod 14, so that the positioning shaft 4 can automatically compensate offset between the heat exchange tube to be welded, and the positioning shaft 4 is coaxial with the heat exchange tube to be welded.
Example 1
An offset compensation connection mechanism for welding a boiler barrel, as shown in fig. 1 to 3, comprises a compensation component 1 and a clamp 2; the compensation assembly 1 comprises a mounting frame 11, a cylinder 12, a fixed rod 13 and a movable rod 14; the cylinder 12 is arranged on the mounting frame 11, one end of the fixed rod 13 is connected with the movable end of the cylinder 12, one end of the fixed rod 13 far away from the cylinder 12 is in ball hinge joint with one end of the movable rod 14, and one end of the movable rod 14 far away from the fixed rod 13 is connected with the positioning shaft 4 of the barrel welding robot; the clamp 2 is arranged on the mounting frame 11, the clamp 2 is used for clamping a rod body of the movable rod 14, and the movable rod 14 is coaxial with the fixed rod 13 when the movable rod 14 is clamped by the clamp 2.
The clamp 2 comprises a thin air jaw 21 and a clip; the thin gas claw 21 is arranged on the mounting frame 11, the clamp is provided with a working end and an operating end, the operating end is used for controlling the working end to clamp the movable rod 14, and the operating end is hinged with the movable end of the thin gas claw 21. The clamp comprises two clamping pieces 22, the middle parts of the two clamping pieces 22 are hinged with each other, one end of each clamping piece 22 is provided with a clamping head 221 which is abutted against the rod body of the movable rod 14, and the other end of each clamping piece 22 is hinged with the movable end of the thin gas claw 21.
The offset compensation connection mechanism for welding the boiler barrel further comprises a limit sleeve 3, wherein the limit sleeve 3 is sleeved outside the movable rod 14, and a movable gap is formed between the inner wall of the limit sleeve 3 and the movable rod 14. The end of the positioning shaft 4 far away from the movable rod 14 is provided with a chamfer.
Working principle: when the positioning shaft 4 is required to stretch into the heat exchange tube to be welded, the movable end is stretched out by the cylinder 12 to enable the fixed rod 13, the movable rod 14 and the positioning shaft 4 to move towards the direction of the heat exchange tube to be welded, and in the process of stretching into the heat exchange tube to be welded, the positioning shaft 4 is in spherical hinge between the movable rod 14 and the fixed rod 13, so that the positioning shaft 4 can self-compensate the offset between the positioning shaft 4 and the heat exchange tube to be welded by utilizing the swinging of the movable rod 14, and the positioning shaft 4 is coaxial with the heat exchange tube to be welded.
After the welding is finished, the air cylinder 12 withdraws the movable end to enable the positioning shaft 4 to withdraw from the heat exchange tube, and then the thin air claw 21 of the clamp 2 drives the movable end to act, so that the clamping heads 221 on the two clamping pieces 22 penetrate through the limiting sleeve 3 and move towards the movable rod 14, thereby clamping the movable rod 14 and enabling the movable rod 14 to be unable to move. And in the folding process, the two chucks 221 can push the movable rod 14 to enable the movable rod 14 to be coaxial with the fixed rod 13, so that the positioning shaft 4 can be ensured to be in an initial state when the boiler barrel welding robot is used for replacing another heat exchange tube to be welded for positioning, and the next time of extending into the heat exchange tube to be welded is facilitated.
Example two
An offset compensation connection mechanism for welding a boiler barrel, as shown in fig. 4 to 6, comprises a compensation component 1 and a clamp 2; the compensation assembly 1 comprises a mounting frame 11, a cylinder 12, a fixed rod 13 and a movable rod 14; the cylinder 12 is arranged on the mounting frame 11, one end of the fixed rod 13 is connected with the movable end of the cylinder 12, one end of the fixed rod 13 far away from the cylinder 12 is in ball hinge joint with one end of the movable rod 14, and one end of the movable rod 14 far away from the fixed rod 13 is connected with the positioning shaft 4 of the barrel welding robot; the clamp 2 is arranged on the mounting frame 11, the clamp 2 is used for clamping a rod body of the movable rod 14, and the movable rod 14 is coaxial with the fixed rod 13 when the movable rod 14 is clamped by the clamp 2.
The clamp 2 comprises a motor 23, a gear assembly 24 and a clip; the motor 23 is arranged on the mounting frame 11, the gear assembly 24 is provided with an input end and an output end, the input end is connected with an output shaft of the motor 23, the clamp is provided with a working end and an operating end, the operating end is used for controlling the working end to clamp the movable rod 14, and the operating end is hinged with the output end of the gear assembly 24. The gear assembly 24 includes a drive gear 241, a first rack 242, and a second rack 243; the driving gear 241 is connected with an output shaft of the motor 23, the first rack 242 and the second rack 243 are slidably arranged on the mounting frame 11, and the first rack 242 and the second rack 243 are oppositely arranged and meshed with the driving gear 241; the clip comprises two clamping pieces 22, the middle parts of the two clamping pieces 22 are hinged with each other, one end of each clamping piece 22 is provided with a clamping head 221 which is abutted against the rod body of the movable rod 14, and the other ends of the two clamping pieces 22 are respectively hinged with a first rack 242 and a second rack 243.
The offset compensation connection mechanism for welding the boiler barrel further comprises a limit sleeve 3, wherein the limit sleeve 3 is sleeved outside the movable rod 14, and a movable gap is formed between the inner wall of the limit sleeve 3 and the movable rod 14. The end of the positioning shaft 4 far away from the movable rod 14 is provided with a chamfer.
Working principle: when the positioning shaft 4 is required to stretch into the heat exchange tube to be welded, the movable end is stretched out by the cylinder 12 to enable the fixed rod 13, the movable rod 14 and the positioning shaft 4 to move towards the direction of the heat exchange tube to be welded, and in the process of stretching into the heat exchange tube to be welded, the positioning shaft 4 is in spherical hinge between the movable rod 14 and the fixed rod 13, so that the positioning shaft 4 can self-compensate the offset between the positioning shaft 4 and the heat exchange tube to be welded by utilizing the swinging of the movable rod 14, and the positioning shaft 4 is coaxial with the heat exchange tube to be welded.
After the welding is completed, the movable end of the cylinder 12 is retracted to enable the positioning shaft 4 to withdraw from the heat exchange tube, and then the motor 23 of the clamp 2 rotates the driving gear 241, so that the first rack 242 and the second rack 243 move on the mounting frame 11, the clamping heads 221 on the two clamping pieces 22 penetrate through the limiting sleeve 3 and move towards the movable rod 14, and the movable rod 14 is clamped, so that the movable rod 14 cannot move. And in the folding process, the two chucks 221 can push the movable rod 14 to enable the movable rod 14 to be coaxial with the fixed rod 13, so that the positioning shaft 4 can be ensured to be in an initial state when the boiler barrel welding robot is used for replacing another heat exchange tube to be welded for positioning, and the next time of extending into the heat exchange tube to be welded is facilitated.
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. An offset compensation joint mechanism for boiler barrel welding, which is characterized in that: comprises a compensation component and a clamp; the compensation component comprises a mounting frame, an air cylinder, a fixed rod and a movable rod;
the cylinder is arranged on the mounting frame, one end of the fixed rod is connected with the movable end of the cylinder, one end of the fixed rod, which is far away from the cylinder, is in ball hinge joint with one end of the movable rod, and one end of the movable rod, which is far away from the fixed rod, is connected with the positioning shaft of the barrel welding robot;
the fixture is arranged on the mounting frame and is used for clamping the rod body of the movable rod, and when the movable rod is clamped by the fixture, the movable rod is coaxial with the fixed rod.
2. The offset compensation joint mechanism for drum welding according to claim 1, wherein: the clamp comprises a thin air jaw and a clamp; the thin type air claw is arranged on the mounting frame, the clamp is provided with a working end and an operating end, the operating end is used for controlling the working end to clamp the movable rod, and the operating end is hinged with the movable end of the thin type air claw.
3. Offset compensation joint mechanism for drum welding according to claim 2, characterized in that: the clamp comprises two clamping pieces, the middle parts of the two clamping pieces are hinged with each other, one end of each clamping piece is provided with a clamping head which is abutted against the rod body of the movable rod, and the other end of each clamping piece is hinged with the movable end of the thin gas claw.
4. The offset compensation joint mechanism for drum welding according to claim 1, wherein: the clamp comprises a motor, a gear assembly and a clamp; the motor is arranged on the mounting frame, the gear assembly is provided with an input end and an output end, the input end is connected with an output shaft of the motor, the clamp is provided with a working end and an operating end, the operating end is used for controlling the working end to clamp the movable rod, and the operating end is hinged with the output end of the gear assembly.
5. The offset compensation interface mechanism for drum welding of claim 4, wherein: the gear assembly comprises a driving gear, a first rack and a second rack; the driving gear is connected with an output shaft of the motor, the first rack and the second rack are arranged on the mounting frame in a sliding mode, and the first rack and the second rack are arranged oppositely and meshed with the driving gear;
the clamp comprises two clamping pieces, the middle parts of the two clamping pieces are hinged with each other, one end of each clamping piece is provided with a clamping head which is abutted against a rod body of the movable rod, and the other ends of the two clamping pieces are respectively hinged with a first rack and a second rack.
6. The offset compensation joint mechanism for drum welding according to claim 1, wherein: still include the stop collar, the stop collar cover is established in the movable rod outside, just have the clearance of activity between the inner wall of stop collar and the movable rod.
7. The offset compensation joint mechanism for drum welding according to claim 1, wherein: one end of the positioning shaft, which is far away from the movable rod, is provided with a chamfer angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059407.6U CN219725129U (en) | 2023-01-09 | 2023-01-09 | Offset compensation connection mechanism for welding of boiler barrels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059407.6U CN219725129U (en) | 2023-01-09 | 2023-01-09 | Offset compensation connection mechanism for welding of boiler barrels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219725129U true CN219725129U (en) | 2023-09-22 |
Family
ID=88062522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320059407.6U Active CN219725129U (en) | 2023-01-09 | 2023-01-09 | Offset compensation connection mechanism for welding of boiler barrels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219725129U (en) |
-
2023
- 2023-01-09 CN CN202320059407.6U patent/CN219725129U/en active Active
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