Positioning device for welding of boiler tube plate

Abstract

The utility model relates to the technical field of tube plate positioning, and discloses a positioning device for welding a boiler tube plate, which comprises a base and a positioning table, a stand column is fixedly mounted at the top of the base, a sliding cylinder is fixedly mounted at the bottom of the positioning table, and a spring is fixedly mounted at the top of the stand column. A positioning mechanism and a discharging mechanism are arranged on the periphery of the positioning table, the positioning mechanism comprises a positioning rod, the positioning rod is slidably connected to the inner wall of the positioning table, a clamping plate is fixedly installed at the top of one end of the positioning rod, and a bent rod is fixedly installed at the other end of the positioning rod; a sliding rod is fixedly installed at the end, away from the positioning rod, of the bent rod, and a fixing plate is fixedly installed at the top of the base. According to the utility model, through the arrangement of the positioning mechanism, the tube plate can be fixed by utilizing the gravity of the tube plate, the tube plate can be positioned without manual operation, the use is more efficient and convenient, and the welding operation efficiency of the tube plate is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of tube sheet positioning technology, and in particular to a positioning device for welding boiler tube sheets. Background Technology

[0002] Boiler tube sheets are key components in boiler equipment, typically made of thick steel plates with multiple holes on their surface for fixing heat exchange tubes. The main function of the tube sheet is to support and separate the tube bundles in the boiler, ensuring the orderly flow of the heat medium inside and outside the tubes, while also withstanding the high-temperature and high-pressure working environment.

[0003] When welding boiler tube sheets, positioning fixtures are needed to fix the tube sheets in place to prevent them from sliding during the welding process. The positioning fixtures not only ensure the precise alignment of the tube sheets and heat exchange tubes, but also reduce welding deformation and improve the stability and welding accuracy of the overall structure.

[0004] Currently, most boiler tube sheet positioning fixtures use mechanical clamping devices, such as bolts, pressure plates, and chucks. While this method can fix the tube sheet, it requires manual operation of the clamping device to adjust the clamping force or release the fixation. Manual operation is time-consuming and labor-intensive, which seriously reduces welding efficiency. Therefore, a positioning device for boiler tube sheet welding is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a positioning device for welding boiler tube sheets, which aims to improve the problem mentioned in the prior art that "the positioning fixture for boiler tube sheets requires manual operation, which is time-consuming and labor-intensive and reduces welding efficiency".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a positioning device for welding boiler tube plates, comprising a base and a positioning platform, wherein a column is fixedly installed on the top of the base, a sliding cylinder is fixedly installed on the bottom of the positioning platform, a spring is fixedly installed on the top of the column, and a positioning mechanism and a feeding mechanism are provided around the positioning platform.

[0007] The positioning mechanism includes a positioning rod that is slidably connected to the inner wall of the positioning platform. A clamping plate is fixedly installed at the top of one end of the positioning rod, and a bent rod is fixedly installed at the other end of the positioning rod. A sliding rod is fixedly installed at the end of the bent rod away from the positioning rod. A fixing plate is fixedly installed at the top of the base, and a slanted groove is provided on the fixing plate.

[0008] As a further description of the above technical solution:

[0009] The feeding mechanism includes a rotating shaft that passes through and is rotatably connected to the inner wall of the fixed plate. A pressure rod is fixedly installed at one end of the rotating shaft, and a top rod is fixedly installed at the other end of the rotating shaft. A fixed shaft is fixedly installed at the end of the top rod away from the rotating shaft, and a hollow rod is fixedly installed on the side wall of the slide cylinder.

[0010] As a further description of the above technical solution:

[0011] The end of the pressure rod away from the pivot is hinged to a pedal, and the outer wall of the fixed shaft is attached to the inner wall of the hollow rod.

[0012] As a further description of the above technical solution:

[0013] The slide tube is slidably connected to the outer wall of the column.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the slide bar is attached to the inner wall of the inclined groove.

[0016] As a further description of the above technical solution:

[0017] The bottom of the clamping plate is attached to the upper surface of the positioning platform.

[0018] As a further description of the above technical solution:

[0019] The clamp has an arc-shaped structure.

[0020] As a further description of the above technical solution:

[0021] Both the positioning rod and the bent rod are L-shaped.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the positioning mechanism can be used to fix the tube sheet by its own weight, and the positioning of the tube sheet can be completed without manual operation, which is more efficient and convenient to use, and greatly improves the welding efficiency of the tube sheet.

[0024] 2. In this utility model, the material feeding mechanism can quickly release the tube sheet after welding, which makes it easier for workers to feed the welded tube sheet and further improves the efficiency of tube sheet welding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 2 This is a side view of the cross-sectional structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the overall structure of the feeding mechanism of this utility model.

[0028] Figure 4 This utility model Figure 1 A magnified structural diagram at point A.

[0029] Legend:

[0030] 1. Base; 2. Positioning platform; 3. Column; 4. Slide cylinder; 5. Spring; 6. Positioning mechanism; 61. Positioning rod; 62. Clamping plate; 63. Bending rod; 64. Slide rod; 65. Fixing plate; 66. Inclined groove; 7. Unloading mechanism; 71. Rotating shaft; 72. Pressure rod; 73. Top rod; 74. Fixing shaft; 75. Hollow rod; 76. Pedal. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 An embodiment of this utility model provides a positioning device for welding boiler tube plates, including a base 1 and a positioning platform 2. A column 3 is fixedly installed on the top of the base 1, and a slide cylinder 4 is fixedly installed on the bottom of the positioning platform 2. The slide cylinder 4 is slidably connected to the outer wall of the column 3. The positioning platform 2 can move smoothly up and down through the guidance of the column 3 and the support of the slide cylinder 4. A spring 5 is fixedly installed on the top of the column 3. When the tube plate is removed from the positioning platform 2, the slide cylinder 4 and the positioning platform 2 will move upward and reset under the elastic action of the spring 5. Positioning mechanisms 6 and unloading mechanisms 7 are provided around the positioning platform 2.

[0033] Reference Figure 2 and Figure 4The positioning mechanism 6 includes a positioning rod 61, which is slidably connected to the inner wall of the positioning table 2. A clamping plate 62 is fixedly installed on the top of one end of the positioning rod 61. By sliding the positioning rod 61 on the inner wall of the positioning table 2, the clamping plate 62 can clamp or release the tube sheet. The bottom of the clamping plate 62 is attached to the upper surface of the positioning table 2. The clamping plate 62 has an arc-shaped structure, which can clamp the side wall of the tube sheet, improving the stability of the tube sheet during welding. The other end of the positioning rod 61 is fixed. A bent rod 63 is installed. Both the positioning rod 61 and the bent rod 63 are L-shaped. A slide rod 64 is fixedly installed at the end of the bent rod 63 away from the positioning rod 61. When the slide rod 64 pushes the bent rod 63, the bent rod 63 will drive the positioning rod 61 to slide on the inner wall of the positioning platform 2. A fixing plate 65 is fixedly installed on the top of the base 1. A sloping groove 66 is opened on the fixing plate 65. The outer wall of the slide rod 64 is attached to the inner wall of the sloping groove 66. By moving the positioning platform 2 up and down, and with the guidance of the sloping groove 66 and the slide rod 64, the bent rod 63 can be pushed.

[0034] Reference Figures 2-4 The feeding mechanism 7 includes a rotating shaft 71, which passes through and is rotatably connected to the inner wall of the fixed plate 65. The rotating shaft 71 allows the pressure rod 72 and the push rod 73 to swing up and down. The pressure rod 72 is fixedly mounted at one end of the rotating shaft 71, and the push rod 73 is fixedly mounted at the other end. When the pressure rod 72 swings downwards, causing the rotating shaft 71 to rotate on the inner wall of the fixed plate 65, the rotating shaft 71 will cause the push rod 73 to swing upwards. A fixed shaft 74 is fixedly mounted at the end of the push rod 73 away from the rotating shaft 71. A hollow rod 75 is fixedly mounted on the side wall of the slide cylinder 4. When the fixed shaft 74... When the hollow rod 75 is pushed upward, it will cause the slide cylinder 4 to slide upward on the outer wall of the column 3. At the same time, the slide cylinder 4 will cause the positioning platform 2 to move upward. The outer wall of the fixed shaft 74 is attached to the inner wall of the hollow rod 75. When the top rod 73 swings upward, it will cause the fixed shaft 74 to move against the inner wall of the hollow rod 75. At the same time, the fixed shaft 74 will push the hollow rod 75 upward. The end of the pressure rod 72 away from the rotating shaft 71 is hinged with a pedal 76. Stepping on the pedal 76 will cause the pressure rod 72 to swing downward. At this time, the pressure rod 72 will cause the rotating shaft 71 to rotate on the inner wall of the fixed plate 65.

[0035] Working principle: In use, the tube sheet is placed on the positioning platform 2. Under the weight of the tube sheet, the positioning platform 2 moves downward and drives the slide cylinder 4 to slide downward on the outer wall of the column 3. At the same time, the positioning platform 2 compresses the spring 5. As the positioning platform 2 moves downward, the positioning rod 61 moves downward synchronously. As the positioning rod 61 moves downward, the bent rod 63 moves downward synchronously. As the bent rod 63 moves downward, the slide rod 64 moves against the inner wall of the inclined groove 66. Under the guidance of the inclined groove 66, the slide rod 64 pushes the bent rod 63, which in turn pushes the positioning rod 61. The positioning rod 61 then slides on the inner wall of the positioning platform 2 and drives the clamping plate 62 to gradually move closer to the center of the positioning platform 2. When the clamping plate 62 contacts the side wall of the tube sheet during its movement, it clamps the tube sheet, thus completing the positioning of the tube sheet. The tube sheet can be fixed by its own weight.

[0036] When the tube sheet welding is completed and it needs to be released from its fixation, simply step on pedal 76 to swing the pressure rod 72 downwards. The pressure rod 72 will then drive the rotating shaft 71 to rotate on the inner wall of the fixed plate 65. Simultaneously, the rotation of the rotating shaft 71 will cause the push rod 73 to swing upwards. The upward swing of the push rod 73 will also cause the fixed shaft 74 to move against the inner wall of the hollow rod 75. At the same time, the fixed shaft 74 will push the hollow rod 75 upwards, causing the hollow rod 75 to push the slide cylinder 4 upwards. The slide cylinder 4 will then slide upwards on the outer wall of the column 3, causing the positioning platform 2 to move upwards. As the positioning platform 2 moves upwards, it will... The positioning rod 61 moves upward synchronously, which in turn drives the bent rod 63 to move upward synchronously. As the bent rod 63 moves upward, it drives the sliding rod 64 to move against the inner wall of the inclined groove 66. Under the guidance of the inclined groove 66, the sliding rod 64 pushes the bent rod 63, which in turn pushes the positioning rod 61. At this time, the positioning rod 61 slides on the inner wall of the positioning table 2 and drives the clamping plate 62 to gradually move away from the tube sheet, thereby quickly releasing the fixation of the tube sheet so that the workers can unload the tube sheet after welding, further improving the welding efficiency of the tube sheet.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for welding boiler tube sheets, comprising a base (1) and a positioning platform (2), characterized in that: A column (3) is fixedly installed on the top of the base (1), a slide cylinder (4) is fixedly installed on the bottom of the positioning platform (2), a spring (5) is fixedly installed on the top of the column (3), and a positioning mechanism (6) and a feeding mechanism (7) are provided around the positioning platform (2). The positioning mechanism (6) includes a positioning rod (61), which is slidably connected to the inner wall of the positioning platform (2). A clamping plate (62) is fixedly installed at the top of one end of the positioning rod (61), and a bent rod (63) is fixedly installed at the other end of the positioning rod (61). A sliding rod (64) is fixedly installed at the end of the bent rod (63) away from the positioning rod (61). A fixing plate (65) is fixedly installed at the top of the base (1), and a slanted groove (66) is provided on the fixing plate (65).

2. The positioning device for welding boiler tube sheets according to claim 1, characterized in that: The feeding mechanism (7) includes a rotating shaft (71), which is rotatably connected to the inner wall of the fixed plate (65). A pressure rod (72) is fixedly installed at one end of the rotating shaft (71), and a top rod (73) is fixedly installed at the other end of the rotating shaft (71). A fixed shaft (74) is fixedly installed at the end of the top rod (73) away from the rotating shaft (71). A hollow rod (75) is fixedly installed on the side wall of the slide cylinder (4).

3. The positioning device for welding boiler tube sheets according to claim 2, characterized in that: The pressure rod (72) is hinged to a pedal (76) at the end away from the pivot (71), and the outer wall of the fixed shaft (74) is attached to the inner wall of the hollow rod (75).

4. The positioning device for welding boiler tube sheets according to claim 1, characterized in that: The slide (4) is slidably connected to the outer wall of the column (3).

5. A positioning device for welding boiler tube sheets according to claim 1, characterized in that: The outer wall of the slide bar (64) is attached to the inner wall of the inclined groove (66).

6. A positioning device for welding boiler tube sheets according to claim 1, characterized in that: The bottom of the clamp (62) is attached to the upper surface of the positioning table (2).

7. A positioning device for welding boiler tube sheets according to claim 1, characterized in that: The clamp (62) has an arc-shaped structure.

8. A positioning device for welding boiler tube sheets according to claim 1, characterized in that: The positioning rod (61) and the bent rod (63) are both L-shaped.

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