Clamping tool for flange plate welding

Abstract

The clamping tool comprises a base, one end of the top of the base is provided with a pair of supporting frames, the tops of the opposite faces of the supporting frames are rotationally connected with rotating sleeves, one sides of the rotating sleeves are fixedly connected with rectangular sleeves, the ends, away from the supporting frames, of the outer sides of the rectangular sleeves are provided with fixed sleeve plates, and the other ends of the rectangular sleeves are sleeved with movable sleeve plates in a sliding mode. A power mechanism for driving the movable sleeve plate to slide is arranged on the rectangular sleeve, movable rods are hinged to the opposite side edges of the fixed sleeve plate and the movable sleeve plate, the opposite ends of the two opposite movable rods are rotationally connected with the same connecting base, an inner supporting plate is arranged on the side, away from the rectangular sleeve, of the connecting base, and the inner wall of a center hole of a flange to be welded is supported and fixed through the inner supporting plate. A flange clamping mechanism is arranged on the outer side of the inner supporting plate, and a supporting mechanism used for supporting a flange plate and a pipeline is arranged at the other end of the top of the base. Flange plates with different sizes can be conveniently fixed, the fixing operation is convenient, the fixing stability is good, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of flange welding technology, and in particular to a clamping fixture for flange welding. Background Technology

[0002] In the welding of flanges at pipeline connections in industries such as petroleum, chemical, and power, it is usually necessary to clamp the flanges to ensure the stability and accuracy of the weld. However, in traditional welding, the alignment and fixation of the flanges and pipelines largely rely on manual operation. That is, the flanges are manually aligned with the ends of the pipeline and welded by hand with a welding torch. During the welding process, due to the lack of effective clamping and positioning devices, the flanges are prone to displacement or deformation due to the heat of welding, resulting in uneven welding and unstable weld quality. Summary of the Invention

[0003] This utility model aims to address the shortcomings of existing technologies by providing a clamping fixture for flange welding.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a clamping fixture for flange welding, comprising a base, a pair of support frames at one top end of the base, a rotating sleeve rotatably connected to the top of the opposite surfaces of the support frames, a rectangular sleeve fixed to one side of the rotating sleeve, a fixed sleeve plate at one end of the outer side of the rectangular sleeve away from the support frames, and a movable sleeve plate slidably fitted at the other end, a power mechanism for driving the movable sleeve plate to slide on the rectangular sleeve, movable rods hinged to the opposite sides of the fixed sleeve plate and the movable sleeve plate, and the opposite ends of the two movable rods rotatably connected to the same connecting seat, an inner support plate at the side of the connecting seat away from the rectangular sleeve, the inner wall of the center hole of the flange to be welded being tightened and fixed by the inner support plate, and a flange clamping mechanism at the outer side of the inner support plate, and a support mechanism for supporting the flange and pipe at the other top end of the base.

[0005] Specifically, the rotating sleeve is rotatably connected between a pair of support frames via bearings.

[0006] Notably, a manual rotating wheel is installed on the outside of the rotating sleeve.

[0007] Specifically, a first motor is installed on the outside of the support frame, and the main shaft of the first motor and the rotating sleeve are connected by a belt drive.

[0008] Specifically, the support mechanism includes a pair of hydraulic cylinders embedded in the top of the base. The top of the telescopic end of the hydraulic cylinders is fixed with an arc-shaped support plate. Several rotating balls are embedded in the top of the support plate. The flange and the pipe are supported by the corresponding support plate and rotate along the balls.

[0009] Specifically, the movable sleeve is provided with a first slider in the middle of the inner wall of the rectangular sleeve, and the rectangular sleeve is provided with a first groove corresponding to the first slider, and the first slider is slidably disposed in the first groove.

[0010] Specifically, the power mechanism includes a lead screw rotatably connected to the inner wall of the rectangular sleeve, a first moving block threaded onto the lead screw, a first slider passing through a first sliding groove and fixedly connected to the first moving block, and a second motor driving the lead screw to rotate is provided on one side of the rectangular sleeve, and the second motor is located inside the rotating sleeve.

[0011] Specifically, the flange clamping mechanism includes a cavity inside the inner support plate, a double-acting screw rotatably connected to the inner wall of the cavity, a second moving block threaded to both sides of the double-acting screw, and a knob located on the outer side of the inner support plate to drive the double-acting screw to rotate. The second moving block has a second slider on the side opposite to the rectangular sleeve. The inner support plate has a second groove corresponding to the second slider. The second slider is slidably disposed in the second groove, and after the second slider passes through the second groove, it is fixedly connected to a clamping plate. The flange is clamped and fixed by a pair of clamping plates.

[0012] The beneficial effects of this utility model are as follows: By setting up a rectangular sleeve, a power mechanism, an inner support plate, and a flange clamping mechanism, this utility model facilitates the fixing of flanges of different sizes, and the fixing operation is simple, with good fixing stability, which helps to ensure welding quality; by setting up a rotating sleeve, a manual rotating wheel, and a first motor, it is easy to drive the flange to rotate, which facilitates continuous welding and improves welding efficiency; by setting up a support mechanism, it is easy to lift the flange and the pipeline, and it can also reduce the friction during the rotation process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram showing the position of the manual rotary wheel of this utility model;

[0016] Figure 4 This is a schematic diagram showing the position of the first motor of this utility model;

[0017] In the picture:

[0018] 1-Base;

[0019] 2-Support frame;

[0020] 3-Rotating sleeve; 31-Bearing; 32-Manual rotary wheel;

[0021] 4-Rectangular sleeve; 41-Fixed sleeve plate; 42-Modible sleeve plate; 421-First slider; 422-First slide groove; 43-Power mechanism; 431-Lead screw; 432-First moving block; 433-Second motor; 44-Modible rod; 45-Connecting seat; 46-Inner support plate; 47-Flange clamping mechanism; 471-Cavity; 472-Double-acting lead screw; 473-Second moving block; 474-Knob; 475-Second slider; 476-Second slide groove; 477-Clamping plate;

[0022] 5-Support mechanism; 51-Hydraulic cylinder; 52-Support plate; 53-Ball bearing;

[0023] 6-First motor;

[0024] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] like Figure 1 , Figure 2 As shown, a clamping fixture for flange welding includes a base 1. A pair of support frames 2 are provided at one top end of the base 1. A rotating sleeve 3 is rotatably connected to the top of the opposing surfaces of the support frames 2. The rotating sleeve 3 is rotatably connected between the pair of support frames 2 via a bearing 31. A rectangular sleeve 4 is fixedly connected to one side of the rotating sleeve 3. A fixed sleeve plate 41 is provided at one end of the outer side of the rectangular sleeve 4 away from the support frame 2, and a movable sleeve plate 42 is slidably fitted at the other end. A first slider 421 is provided in the middle of each movable sleeve plate 42, which is in close contact with the inner wall of the rectangular sleeve 4. The rectangular sleeve 4 is provided with a slider... The first slide groove 422 corresponds to 421. The first slider 421 is slidably disposed in the first slide groove 422. The rectangular sleeve 4 is provided with a power mechanism 43 for driving the movable sleeve plate 42 to slide. The power mechanism 43 includes a lead screw 431 rotatably connected to the inner wall of the rectangular sleeve 4. A first moving block 432 is threadedly connected to the lead screw 431. The first slider 421 passes through the first slide groove 422 and is fixedly connected to the first moving block 432. A second motor 433 for driving the lead screw 431 to rotate is provided on one side of the rectangular sleeve 4, and the second motor 433 is located inside the rotating sleeve 3.

[0027] Both the fixed sleeve plate 41 and the movable sleeve plate 42 have movable rods 44 hinged to their opposite sides, and the two opposite movable rods 44 are rotatably connected to the same connecting seat 45. The connecting seat 45 has an inner support plate 46 on the side away from the rectangular sleeve 4. The inner wall of the center hole of the flange to be welded is tightened and fixed by the inner support plate 46, and a flange clamping mechanism 47 is provided on the outer side of the inner support plate 46. The flange clamping mechanism 47 includes a cavity 471 set inside the inner support plate 46, a bidirectional lead screw 472 rotatably connected to the inner wall of the cavity 471, and a screw. The second moving blocks 473 are connected to both sides of the double-acting lead screw 472, and the knob 474, located outside the inner support plate 46, drives the double-acting lead screw 472 to rotate. A second slider 475 is provided on the side of the second moving block 473 opposite to the rectangular sleeve 4. A second groove 476 corresponding to the second slider 475 is provided on the inner support plate 46. The second slider 475 slides within the second groove 476, and after passing through the second groove 476, a clamping plate 477 is fixedly connected to it. The flange is clamped and fixed by a pair of clamping plates 477. The inner support plate 46 moves under the drive of the second motor 433, facilitating the use of flanges with different bore diameters. Furthermore, the clamping plates 477 further clamp and fix the flange, ensuring the stability of the welding process.

[0028] At the other end of the top of the base 1, there is a support mechanism 5 for supporting the flange and pipe. The support mechanism 5 includes a pair of hydraulic cylinders 51 embedded in the top of the base 1. An arc-shaped support plate 52 is fixed to the top of the telescopic end of the hydraulic cylinder 51. Several rotating balls 53 are embedded in the top of the support plate 52. The flange and pipe are supported by the corresponding support plate 52 and rotate along the balls 53. The support plate 52 is designed to facilitate the lifting of the flange and pipe, and the balls 53 reduce friction and ensure smooth rotation of the flange and pipe.

[0029] like Figure 3 As shown, a manual rotating wheel 32 is installed on the outside of the rotating sleeve 3. In use, the flange and the pipe are first temporarily fixed by spot welding, and then the manual rotating wheel 32 is rotated to make the flange and the pipe rotate synchronously for welding of the joint.

[0030] like Figure 4 As shown, a first motor 6 is installed on the outside of the support frame 2. The main shaft of the first motor 6 and the rotating sleeve 3 are connected by a belt drive. In use, the flange and the pipe are first temporarily fixed by spot welding, and then the first motor 6 is started to drive the flange and the pipe to rotate synchronously and weld the joint.

[0031] In operation, the flange to be welded is fitted onto the outside of the rectangular sleeve 4 and secured by the inner support plate 46, and then further secured by the clamping plate 477. After clamping and securing, the corresponding hydraulic cylinder 51 is activated, and the support plate 52 lifts it. Next, the pipe is fitted onto the neck of the flange, and then the corresponding hydraulic cylinder 51 is activated, and the support plate 52 lifts the pipe to begin welding. During welding, spot welding can be performed first to temporarily fix the flange and pipe. Then, by rotating the manual turner 32 or starting the first motor 6, the flange and pipe are driven to rotate synchronously, facilitating subsequent butt joint welding. This invention facilitates the fixing of flanges of different sizes, and the fixing operation is convenient, with good fixing stability and ease of use.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A clamping fixture for flange welding, comprising a base (1), characterized in that, A pair of support frames (2) are provided at one end of the top of the base (1). A rotating sleeve (3) is rotatably connected to the top of the opposite side of the support frame (2). A rectangular sleeve (4) is fixedly connected to one side of the rotating sleeve (3). A fixed sleeve plate (41) is provided at one end of the rectangular sleeve (4) away from the support frame (2), and a movable sleeve plate (42) is slidably fitted at the other end. A power mechanism (43) for driving the movable sleeve plate (42) to slide is provided on the rectangular sleeve (4). Movable rods (44) are hinged to the opposite sides of the fixed sleeve plate (41) and the movable sleeve plate (42). The opposite ends of the two movable rods (44) are rotatably connected to the same connecting seat (45). An inner support plate (46) is provided on the side of the connecting seat (45) away from the rectangular sleeve (4). The inner wall of the center hole of the flange to be welded is tightened and fixed by the inner support plate (46). A flange clamping mechanism (47) is provided on the outside of the inner support plate (46). A support mechanism (5) for supporting the flange and the pipe is provided at the other end of the top of the base (1).

2. The clamping fixture for flange welding according to claim 1, characterized in that, The rotating sleeve (3) is rotatably connected between a pair of support frames (2) via a bearing (31).

3. The clamping fixture for flange welding according to claim 1, characterized in that, A manual rotating wheel (32) is installed on the outside of the rotating sleeve (3).

4. The clamping fixture for flange welding according to claim 1, characterized in that, The support frame (2) is equipped with a first motor (6) on the outside, and the main shaft of the first motor (6) and the rotating sleeve (3) are driven by a belt.

5. The clamping fixture for flange welding according to claim 1, characterized in that, The support mechanism (5) includes a pair of hydraulic cylinders (51) embedded in the top of the base (1). The top of the telescopic end of the hydraulic cylinder (51) is fixed with an arc-shaped support plate (52). The top of the support plate (52) is embedded with a number of rotating balls (53). The flange and the pipe are supported by the corresponding support plate (52) and rotate along the balls (53).

6. The clamping fixture for flange welding according to claim 1, characterized in that, The movable sleeve (42) is closely attached to the inner wall of the rectangular sleeve (4) and a first slider (421) is provided in the middle. The rectangular sleeve (4) is provided with a first groove (422) corresponding to the first slider (421). The first slider (421) is slidably disposed in the first groove (422).

7. A clamping fixture for flange welding according to claim 6, characterized in that, The power mechanism (43) includes a lead screw (431) rotatably connected to the inner wall of the rectangular sleeve (4), a first moving block (432) threadedly connected to the lead screw (431), a first slider (421) passing through the first sliding groove (422) and fixedly connected to the first moving block (432), and a second motor (433) driving the lead screw (431) to rotate is provided on one side of the rectangular sleeve (4), and the second motor (433) is located inside the rotating sleeve (3).

8. The clamping fixture for flange welding according to claim 1, characterized in that, The flange clamping mechanism (47) includes a cavity (471) inside the inner support plate (46), a double-acting screw (472) rotatably connected to the inner wall of the cavity (471), a second moving block (473) threadedly connected to both sides of the double-acting screw (472), and a knob (474) on the outside of the inner support plate (46) for driving the double-acting screw (472) to rotate. The second moving block (473) is provided with a second slider (475) on the side away from the rectangular sleeve (4). The inner support plate (46) is provided with a second groove (476) corresponding to the second slider (475). The second slider (475) is slidably disposed in the second groove (476), and after the second slider (475) passes through the second groove (476), a clamping plate (477) is fixedly connected to it. The flange is clamped and fixed by a pair of clamping plates (477).

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