Clamping mechanism for welding pressure container

Abstract

The utility model discloses a clamping mechanism for pressure vessel welding, and belongs to the technical field of pressure vessel welding. The mechanism comprises a base, a mounting seat, an auxiliary roller and a supporting roller. A first motor is fixed to one side of the base, the output end of the first motor extends to a first threaded rod and a second threaded rod in the base, the directions of threads formed in the surfaces of the two threaded rods are opposite, sleeves are arranged on the threaded rods, a moving block is fixed to the top ends of the sleeves, and the moving block penetrates through a moving groove in the base to be connected with a second placement base. And a supporting roller is arranged in the second placement seat and is rotationally connected through a second rotating shaft. A mounting seat is arranged on the upper surface of the base and used for mounting two air cylinders, the movable ends of the air cylinders are connected with a first placement seat, an auxiliary roller is arranged in the first placement seat, and rotating connection is achieved through a first rotating shaft. The air cylinder drives the auxiliary roller to move up and down, and the first motor drives the supporting roller to move left and right, so that the clamping mechanism can adapt to pressure containers of different sizes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure vessel welding technical field, concretely is a kind of clamping mechanism for pressure vessel welding. BACKGROUND

[0002] Pressure vessel is a kind of pressure-resistant closed container. The use of pressure vessel is extremely wide, it has important position and function in many departments such as industry, civil, military industry and many fields of scientific research. The welding process of pressure vessel needs to use special clamping mechanism to limit and clamp pressure vessel, but the clamping mechanism for pressure vessel welding in the prior art is not convenient to adapt to pressure vessels of different sizes in use, so that the application range is not wide enough.

[0003] Therefore, it is urgent to develop a welding clamping mechanism that can adapt to pressure vessels of different sizes. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the deficiency in prior art and providing a kind of clamping mechanism for pressure vessel welding.

[0005] The specific technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a kind of clamping mechanism for pressure vessel welding, including base, mount, auxiliary roller and support roller;

[0007] The side of the base is fixedly provided with the first fixed seat for fixing the first motor;The output end of the first motor extends to the inside of the base and is fixedly connected with the first threaded rod;The end, away from the first motor, of the first threaded rod is fixedly connected with the second threaded rod, the other end of the second threaded rod is in abutment with the other side of the base, and the external thread direction opened on the surface of the first threaded rod is opposite to the external thread direction opened on the surface of the second threaded rod;The first threaded rod and the second threaded rod are driven to rotate by the first motor;The surface of the first threaded rod and the second threaded rod is provided with sleeve, and the sleeve is provided with internal thread matched with the external thread opened on the surface of the first threaded rod and the second threaded rod respectively;The top of the two sleeves is fixedly provided with moving block;

[0008] Two moving grooves are opened on the upper surface of the base;Two moving blocks are fixedly connected with two second seats arranged on the upper surface of the base by passing through two moving grooves respectively, and the two moving blocks are slidably connected in the moving groove respectively;Second seat is arranged from front to back along the width direction of base;Support roller is arranged in each second seat, and the two ends of support roller are rotatably connected with second seat by setting second rotating shaft;

[0009] The upper surface of the base is provided with a mounting seat for mounting two air cylinders; the movable ends below the two air cylinders are fixedly connected with first mounting seats, and the first mounting seats are arranged from front to back along the width direction of the mounting seat; an auxiliary roller is arranged in each first mounting seat, and both ends of the auxiliary roller are rotatably connected to the first mounting seat through a first rotating shaft; the first mounting seat and the auxiliary roller are driven to move up and down by the air cylinder.

[0010] Preferably, two sliding grooves are further arranged on the two sides of the upper surface of the base, and the sliding grooves are arranged vertically to the arrangement direction of the second mounting seat; a sliding block is slidably arranged in each sliding groove, one end of the sliding block is fixedly connected to the second mounting seat, and the other end of the sliding block is slidably connected to the sliding groove.

[0011] Preferably, a second fixing seat for fixing a second motor is fixedly arranged at one end of each second mounting seat; the output end of the second motor extends into the second mounting seat and is fixedly connected to one end of a second rotating shaft; the support roller is driven to rotate in the second mounting seat by the second motor.

[0012] Preferably, a control panel for controlling the motor and the air cylinder is fixedly arranged on one side of the mounting seat.

[0013] Preferably, two guide holes for inserting guide rods are further arranged at the top end of the mounting seat; the two guide rods are arranged vertically to the top end of the mounting seat, and the bottom ends of the guide rods are fixedly connected to the two first mounting seats.

[0014] Preferably, a fixing member for fixedly connecting with the welding operation table is arranged on each side of the base.

[0015] Further, four fixing members are arranged, and each fixing member is fixed to the four corners of the base by welding.

[0016] Further, a fixing hole is arranged in the middle of each fixing member, and the clamping mechanism is fixed to the welding operation table by bolts or pins passing through the fixing hole.

[0017] Preferably, a first anti-skid coating is arranged on the surface of the support roller.

[0018] Preferably, a second anti-skid coating is arranged on the surface of the auxiliary roller.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The pressure vessel is limited and supported by two support rollers, and then two cylinders push two first mounting seats downward, which in turn drives two auxiliary rollers downward, so that the two auxiliary rollers are in close contact with the pressure vessel, thereby facilitating the limiting and clamping of the pressure vessel and the welding operation. Two second motors drive two second rotating shafts to rotate, which in turn drives the two support rollers to rotate, thereby driving the pressure vessel to rotate, which in turn facilitates the welding operation.

[0021] 2. The first threaded rod and the second threaded rod are driven to rotate by the first motor. Since the thread direction on the surface of the first threaded rod is opposite to that on the surface of the second threaded rod, the two sleeves move towards each other or away from each other, thereby driving the two support rollers to move towards each other or away from each other. The two cylinders drive the two first mounting seats to move up and down, thereby driving the two auxiliary rollers to move up and down, thereby adjusting the size of the area enclosed between the two auxiliary rollers and the two support rollers, which can adapt to pressure vessels of different sizes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a clamping mechanism for welding pressure vessels provided in this embodiment;

[0023] Figure 2 This is a front sectional view of a clamping mechanism for welding pressure vessels provided in this embodiment;

[0024] Figure 3 This is an enlarged view of part A;

[0025] Figure 4 This is a sectional view of the second mounting seat;

[0026] Figure 5 This is a side sectional view of the upper structure of the mounting base.

[0027] In the diagram: 1. Base; 2. First fixed seat; 3. First motor; 4. First threaded rod; 5. Second threaded rod; 6. Mounting seat; 7. Control panel; 8. Cylinder; 9. First mounting seat; 10. Auxiliary roller; 11. Sleeve; 12. Moving block; 13. Second mounting seat; 14. Moving groove; 15. Second rotating shaft; 16. Support roller; 17. Second fixed seat; 18. Second motor; 19. First rotating shaft; 20. Guide hole; 21. Guide rod; 22. Slide groove; 23. Slider; 24. Fixing component; 25. Fixing hole; 26. First anti-slip coating; 27. Second anti-slip coating. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0029] In the description of this utility model, it should be understood that the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.

[0030] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, this embodiment provides a clamping mechanism for welding pressure vessels, including a base 1, a mounting base 6, an auxiliary roller 10, and a support roller 16.

[0031] A first fixed seat 2 is fixedly installed on one side of the base 1. A first motor 3 is fixedly installed inside the first fixed seat 2. The output end of the first motor 3 extends into the interior of the base 1 and is fixedly connected to a first threaded rod 4. A second threaded rod 5 is fixedly connected to the end of the first threaded rod 4 away from the first motor 3. The other end of the second threaded rod 5 abuts against the other side of the base 1. The direction of the external thread on the surface of the first threaded rod 4 is opposite to the direction of the external thread on the surface of the second threaded rod 5. A sleeve 11 is provided on the surface of both the first threaded rod 4 and the second threaded rod 5. The sleeve 11 is provided with internal threads that match the external threads on the surfaces of the first threaded rod 4 and the second threaded rod 5. The first threaded rod 4 and the sleeve 11, and the second threaded rod 5 and the sleeve 11 are all threaded connections. The first threaded rod 4 and the second threaded rod 5 are driven to rotate by the first motor 3.

[0032] The base 1 is provided with two second mounting seats 13, which are arranged from front to back along the width direction of the base 1, and the lower surface of the second mounting seat 13 is in contact with the upper surface of the base 1.

[0033] In this embodiment, fasteners 24 are fixedly installed at both ends of the base 1 by welding. The fasteners 24 are used for fixed connection to the welding operating table. In this embodiment, four fasteners 24 are provided, respectively located at the four corners of the base 1. Each of the four fasteners 24 has a fixing hole 25 in its center, which can generally be used with bolts or pins. The bolts or pins pass through the fixing holes 25 to fix the clamping mechanism to the welding operating table, preventing displacement of the clamping mechanism during welding operations, which could lead to large deviations in the welding point and affect the welding quality of the pressure vessel to be welded.

[0034] like Figure 2 and Figure 3 As shown, in this embodiment, each of the two sleeves 11 has a movable block 12 fixedly connected to its top end. The top ends of both movable blocks 12 extend to the outside and are fixedly connected to the second mounting base 13. Two movable grooves 14 are formed on the upper surface of the base 1. The movable grooves 14 and the second mounting base 13 are arranged perpendicular to each other. The two movable blocks 12 pass through the two movable grooves 14 respectively and are fixedly connected to the two second mounting bases 13 arranged on the upper surface of the base 1. The two movable blocks 12 form a sliding connection in the two movable grooves 14 respectively. The movable grooves 14 can limit the displacement of the movable blocks 12. The cooperation between the two allows the second mounting base 13 to move stably.

[0035] like Figure 4 As shown, in the mechanism provided in this embodiment, each second mounting base 13 is provided with a support roller 16, and each of the two ends of the inner side of the second mounting base 13 is provided with a second rotating shaft 15. The two ends of the support roller 16 are rotatably connected to the second mounting base 13 through the second rotating shaft 15. A second fixing base 17 is fixedly provided at one end of each second mounting base 13, and a second motor 18 is fixedly installed inside each second fixing base 17. The output end of each second motor 18 extends into the interior of the second mounting base 13 and is fixedly connected to one end of one of the second rotating shafts 15 inside the second mounting base 13. By driving the two second rotating shafts 15 to rotate through the two second motors 18, the two support rollers 16 are driven to rotate, thereby driving the pressure vessel to be welded to rotate, thus facilitating the welding operation.

[0036] To ensure the stability of the support rollers 16 in the two second mounting seats 13 during movement, this embodiment also provides two sliding grooves 22 on both sides of the upper surface of the base 1. In this embodiment, the sliding grooves 22 are symmetrically spaced on both sides of the moving groove 14, and the opening direction of the sliding grooves 22 is perpendicular to the arrangement direction of the second mounting seats 13. A slider 23 is slidably arranged inside each sliding groove 22. One end of the slider 23 is fixedly connected to the second mounting seat 13, and the other end is slidably connected to the sliding groove 22. The displacement of the slider 23 can be restricted by the sliding groove 22. Multiple sliders 23 can distribute the stress borne by the moving block 12, making the movement of the second mounting seat 13 more stable when the pressure vessel to be welded is adjusted. This prevents the moving block 12 from detaching from the second mounting seat 13 due to excessive stress when the pressure vessel to be welded is heavy, which could lead to an operational accident.

[0037] Since the thread direction on the surface of the first threaded rod 4 is opposite to that on the surface of the second threaded rod 5, when the first motor 3 drives the first threaded rod 4 and the second threaded rod 5 to rotate, the two sleeves 11 move towards or away from each other, causing the second mounting seat 13 to move towards or away from each other, thereby causing the two support rollers 16 to move towards or away from each other. When welding is completed at a certain point of the pressure vessel to be welded, and it is necessary to change to the next welding point, the position of the welding point of the pressure vessel to be welded can be adjusted by adjusting and rotating the position of the support rollers 16. In order to prevent the pressure vessel to be welded from slipping on the support rollers 16 when adjusting the position of the welding point, a first anti-slip coating 26 is provided on the surface of both support rollers 16 to increase the friction between the pressure vessel to be welded and the support rollers 16, reduce the occurrence of slippage, and improve work efficiency and welding accuracy.

[0038] like Figure 2 and Figure 5 As shown, in the mechanism provided in this embodiment, mounting seats 6 are provided at both ends of the upper surface of the base 1. The mounting seat 6 is a square groove with an opening on one side, and the opening side is fixedly connected to the base 1. A cylinder 8 is fixedly installed on one side of the top of the mounting seat 6. The movable ends below the two cylinders 8 are fixedly connected to the first mounting seats 9, which are arranged from front to back along the width direction of the mounting seat 6. An auxiliary roller 10 is provided inside the first mounting seat 9. A first rotating shaft 19 is provided at both ends of the inner side of the first mounting seat 9. The two ends of the auxiliary roller 10 are rotatably connected to the first mounting seat 9 through the first rotating shaft 19. The cylinder 8 drives the first mounting seat 9 to move up and down, thereby driving the two auxiliary rollers 10 to move up and down, thereby adjusting the size of the area enclosed between the two auxiliary rollers 10 and the two support rollers 16, which can adapt to pressure vessels of different sizes. In order to prevent the pressure vessel to be welded from slipping, a second anti-slip coating 27 is provided on the surface of the two auxiliary rollers 10.

[0039] Two guide holes 20 are provided on the top side of the mounting base 6 away from the cylinder 8. Guide rods 21 are inserted through each guide hole 20. The two guide rods 21 are set perpendicular to the top of the mounting base 6, and the bottom ends of the guide rods 21 are fixedly connected to the two first mounting seats 9 respectively. The guide rods 21 and the movable ends of the lower part of the cylinder 8 are fixed to the two ends of the first mounting seats 9 respectively, and the movement trajectory of the guide rods 21 is restricted by the guide holes 20, so that the first mounting seats 9 are more stable during up and down movement.

[0040] In this embodiment, a control panel 7 is fixedly installed on one side of the mounting base 6, and the working status of the first motor 3, the second motor 18 and the cylinder 8 are controlled by the control panel 7.

[0041] In addition, this embodiment also provides a method for using a clamping mechanism for welding pressure vessels:

[0042] The first motor 3 drives the first threaded rod 4 and the second threaded rod 5 to rotate. Since the thread direction on the surface of the first threaded rod 4 is opposite to the thread direction on the surface of the second threaded rod 5, the two sleeves 11 move towards or away from each other, thereby causing the two support rollers 16 to move towards or away from each other. When the distance between the two support rollers 16 is adjusted to a suitable distance, the pressure vessel to be welded is placed on the two support rollers 16. The two support rollers 16 provide limiting support for the pressure vessel to be welded.

[0043] Then, two cylinders 8 control the two first mounting seats 9 to move up and down, which in turn drives the two auxiliary rollers 10 to move up and down, adjusting the size of the area enclosed between the two auxiliary rollers 10 and the two support rollers 16. The adjustment is made so that both auxiliary rollers 10 are in close contact with the pressure vessel to be welded, achieving the limiting clamping of the pressure vessel to be welded.

[0044] Two second motors 18 drive two second rotating shafts 15 to rotate, which in turn drives two support rollers 16 to rotate, thereby causing the pressure vessel to be welded to rotate, facilitating the welding operation.

[0045] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A clamping mechanism for welding pressure vessels, characterized in that, It includes a base (1), a mounting base (6), an auxiliary roller (10), and a support roller (16); A first fixing seat (2) for fixing a first motor (3) is fixedly provided on one side of the base (1); the output end of the first motor (3) extends into the interior of the base (1) and is fixedly connected to a first threaded rod (4); a second threaded rod (5) is fixedly connected to one end of the first threaded rod (4) away from the first motor (3), and the other end of the second threaded rod (5) abuts against the other side of the base (1), and the direction of the external thread on the surface of the first threaded rod (4) is opposite to the direction of the external thread on the surface of the second threaded rod (5); the first threaded rod (4) and the second threaded rod (5) are driven to rotate by the first motor (3); a sleeve (11) is provided on the surface of the first threaded rod (4) and the second threaded rod (5), and the sleeve (11) is provided with an internal thread that matches the external thread on the surface of the first threaded rod (4) and the second threaded rod (5); a moving block (12) is fixedly provided at the top of each of the two sleeves (11); Two movable slots (14) are opened on the upper surface of the base (1); two movable blocks (12) pass through the two movable slots (14) respectively and are fixedly connected to two second mounting seats (13) set on the upper surface of the base (1), and the two movable blocks (12) are slidably connected in the movable slots (14); the second mounting seats (13) are arranged from front to back along the width direction of the base (1); each second mounting seat (13) is provided with a support roller (16), and the two ends of the support roller (16) are rotatably connected to the second mounting seat (13) through a second rotating shaft (15); The upper surface of the base (1) is provided with a mounting seat (6) for mounting two cylinders (8); the movable ends below the two cylinders (8) are fixedly connected to a first mounting seat (9), and the first mounting seat (9) is arranged from front to back along the width direction of the mounting seat (6); an auxiliary roller (10) is provided inside the first mounting seat (9), and both ends of the auxiliary roller (10) are rotatably connected to the first mounting seat (9) by setting a first rotating shaft (19); the first mounting seat (9) and the auxiliary roller (10) are driven to move up and down by the cylinders (8).

2. The clamping mechanism for pressure vessel welding according to claim 1, characterized in that: Two sliding grooves (22) are also provided on both sides of the upper surface of the base (1). The opening direction of the sliding grooves (22) is perpendicular to the arrangement direction of the second mounting seat (13). A slider (23) is slidably arranged inside each sliding groove (22). One end of the slider (23) is fixedly connected to the second mounting seat (13), and the other end is slidably connected to the sliding groove (22).

3. The clamping mechanism for welding pressure vessels according to claim 1, characterized in that: Each second mounting seat (13) has a second mounting seat (17) fixedly installed at one end for fixing the second motor (18); the output end of the second motor (18) extends into the interior of the second mounting seat (13) and is fixedly connected to one end of the second rotating shaft (15); the second motor (18) drives the support roller (16) to rotate inside the second mounting seat (13).

4. The clamping mechanism for welding pressure vessels according to claim 1, characterized in that: A control panel (7) for controlling the motor and cylinder is fixedly installed on one side of the mounting base (6).

5. A clamping mechanism for welding pressure vessels according to claim 1, characterized in that: The top of the mounting base (6) is also provided with two guide holes (20) for inserting guide rods (21); the two guide rods (21) are set perpendicular to the top of the mounting base (6), and the bottom ends of the guide rods (21) are fixedly connected to the two first mounting seats (9) respectively.

6. The clamping mechanism for pressure vessel welding according to claim 1, characterized in that: Both sides of the base (1) are provided with fasteners (24) for fixed connection with the welding operation table.

7. A clamping mechanism for welding pressure vessels according to claim 6, characterized in that: Four fasteners (24) are provided, and each fastener (24) is fixed to the four corners of the base (1) by welding.

8. A clamping mechanism for pressure vessel welding according to claim 6, characterized in that: Each fastener (24) has a fixing hole (25) in the middle, and the clamping mechanism is fixed to the welding operation table by bolts or pins passing through the fixing hole (25).

9. A clamping mechanism for welding pressure vessels according to claim 1, characterized in that: The surface of the support roller (16) is provided with a first anti-slip coating (26).

10. A clamping mechanism for welding pressure vessels according to claim 1, characterized in that: The surface of the auxiliary roller (10) is provided with a second anti-slip coating (27).

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