Flange plate welding clamping device

Abstract

The utility model discloses a flange plate welding clamping device which comprises a bottom plate, a supporting plate, a bearing, a clamping ring, a clamping block, a rotating ring, a sliding block, a positioning structure, a limiting structure and a linkage structure, the supporting plate is arranged at the rear end of the upper side of the bottom plate, the bearing is arranged at the upper end of the front side of the supporting plate, the clamping ring is arranged on the front side of the bearing, and the rotating ring is arranged on the clamping block. A clamping block is arranged on the front side of the outer portion of the clamping ring, a limiting structure is arranged between the clamping block and the clamping ring, a sliding block is arranged on the upper side of the bottom plate, a positioning structure is arranged between the sliding block and the bottom plate, a rotating ring is arranged in the clamping ring, and a linkage structure is arranged between the rotating ring and the clamping block. Compared with the prior art, the flange plate welding device has the advantage that welding between a pipeline and a flange plate is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of flange welding, in particular to a flange welding clamping device. Background Art

[0002] A valve is a pipeline accessory used for controlling the flow direction or on-off of fluid in a hole pipeline. It mainly consists of a valve body and a control component connected to the valve body. The valve is connected to the pipeline through a flange on the valve body, and the flange on the valve body and other structures of the valve body usually need to be welded. The stability and accuracy of flange positioning have an important impact on the welding quality of the valve body.

[0003] A clamping device for processing an outer flange described in the published patent No. CN212287352U includes a bottom plate. A first motor is installed in the middle of the top end of the bottom plate. The first motor is connected to a rotating shaft through a bushing. A clamping table is welded to the top end of the rotating shaft. A support mechanism is arranged on the outer side of the bottom end of the clamping table. An installation groove is opened in the middle of the top end of the clamping table. A second motor is installed on one side of the installation groove. The second motor is connected to a lead screw through an output shaft. A fixed seat is slidably connected to the outer surface of the lead screw. A first clamping plate is welded to the top end of the fixed seat. Support plates are symmetrically welded to both sides of the top end of the bottom plate. A threaded rod is connected above the support plates in a threaded manner. A connecting block is installed at one end of the threaded rod. A second clamping plate is welded to one side of the connecting block. However, the prior art still has defects:

[0004] 1. The flange clamping device adopted in the prior art uses four movable clamping plates to clamp flanges of different sizes by approaching each other. When welding between a pipeline and a flange, the pipeline and the flange need to be rotated to weld the periphery. This clamping device requires workers to rotate around the flange, making the welding more troublesome.

[0005] 2. After the flange clamping device adopted in the prior art clamps the flange, an additional device is needed to lift the pipeline, and then the position of the lower end of the pipeline and the position between the pipeline and the flange are adjusted to weld the pipeline and the flange. However, this installation method is likely to cause the pipeline and the flange to be non-perpendicular. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the above defects and provide a flange welding clamping device.

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is a flange welding clamping device, comprising a base plate, a support plate fixedly connected to the rear side of the upper end of the base plate, two sliders are provided on the front side of the upper end of the base plate, a positioning structure is provided between the sliders and the base plate, the upper sides of the sliders are fixedly connected to a lifting cylinder, the upper ends of the lifting cylinders are fixedly connected to a pipeline bracket, rollers are provided on both sides of the bottom end of the pipeline bracket, the upper end of the front side of the support plate is fixedly connected to a mounting block, a bearing is sleeved on the outside of the mounting block, and a ring is sleeved on the outside of the bearing The front side of the outer side of the collar is fixedly connected to a clamping ring, and three evenly distributed gears are arranged inside the clamping ring. The gears are fixedly connected to the rotating shaft extending to the outside of the clamping ring with adjusting bolts. A swivel is arranged inside the clamping ring at the front side of the gear, and an anti-slip structure is arranged between the swivel and the clamping ring. A number of evenly distributed tooth grooves for cooperating with the gears are opened on the rear side of the swivel. Three evenly distributed clamping blocks are arranged at the edge of the outer front side of the clamping ring, a limiting structure is arranged between the clamping block and the clamping ring, and a linkage structure is arranged between the clamping block and the swivel.

[0008] As an improvement, the positioning structure includes guide rails fixedly connected to both sides of the upper end of the bottom plate, and pulleys for cooperating with the guide rails are provided at the front and rear of both sides of the slider.

[0009] As an improvement, the anti-slip structure includes a main anti-slip ring fixedly connected to the inner outer wall of the clamping ring, and a secondary anti-slip ring fixedly connected to the inner inner wall of the clamping ring. The main anti-slip ring and the secondary anti-slip ring are both located on the front side of the swivel.

[0010] As an improvement, the limiting structure includes a sliding hole opened on the front side of the outside of the clamping ring for use with the clamping block, both sides of the clamping block are fixedly connected to the limiting strip, and both sides of the sliding hole are provided with limiting grooves for use with the limiting strip.

[0011] As an improvement, the linkage structure includes a vortex-shaped toggle bar fixedly connected to the front side of the rotating ring, and the rear side of the clamping block is fixedly connected to a plurality of evenly distributed toggle posts used in conjunction with the vortex-shaped toggle bar.

[0012] The advantages of the present invention compared with the prior art are: 1. The present invention uses a turntable to drive three clamping blocks to move in a self-centering manner to clamp the flange, and after the flange is clamped, the flange and the pipe can be rotated through rollers and bearings to weld the periphery of the flange and the pipe, without the need for workers to move back and forth, and the welding operation is more convenient.

[0013] 2. The utility model uses two liftable pipe supports to lift the pipe to a height concentric with the center of the flange. It can be placed horizontally without the need for additional equipment to lift the pipe, and eliminates the swing during lifting. With the assistance of the pipe bracket and the support plate, the pipe and the flange can be welded as vertically as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of a flange welding clamping device of the present invention.

[0015] Figure 2 It is a rear cross-sectional view of a flange welding clamping device of the present invention.

[0016] Figure 3 This is a main sectional view of a flange welding clamping device of the present invention.

[0017] Figure 4 The utility model is a structural schematic diagram of a clamping ring of a flange welding clamping device.

[0018] As shown in the figure: 1. Base plate; 2. Support plate; 3. Slider; 4. Positioning structure; 5. Lifting cylinder; 6. Pipe bracket; 7. Roller; 8. Mounting block; 9. Bearing; 10. Ring; 11. Clamping ring; 12. Gear; 13. Adjusting bolt; 14. Swivel; 15. Anti-slip structure; 16. Tooth groove; 17. Clamping block; 18. Limiting structure; 19. Linking structure; 20. Guide rail; 21. Pulley; 22. Main anti-slip ring; 23. Auxiliary anti-slip ring; 24. Sliding hole; 25. Limiting strip; 26. Limiting groove; 27. Vortex toggle strip; 28. Toggle column. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] like Figures 1-4As shown in the figure, the utility model is provided with a rectangular bottom plate 1 as the installation basis of the clamping device. A support plate 2 is installed at the rear side of the upper end of the bottom plate 1. Two sliders 3 that can move back and forth are arranged on the upper side of the bottom plate 1. A positioning structure 4 is arranged between the slider 3 and the bottom plate 1, so that the slider 3 can only move back and forth on the upper side of the bottom plate 1. Lifting cylinders 5 are installed on the upper sides of the sliders 3. The upper ends of the lifting cylinders 5 are installed with a pipe support 6 with a concave cross-section. Two pipe supports 6 are used to support the pipes to be welded. The height of the pipes is adjusted by the lifting cylinders 5, so that the pipes can be in a concentric position relationship with the flange. Rollers 7 are arranged on both sides of the inner bottom end of the pipe support 6, which is convenient for the supported pipes to rotate during welding, facilitating the welding of the flange and the surrounding end of the pipe. A circular mounting block 8 is installed at the upper front side of the support plate 2. A bearing 9 is sleeved outside the mounting block 8. A collar 10 is sleeved outside the bearing 9. The inner diameter of the bearing 9 is equal to the radius of the mounting block 8, and the outer diameter of the bearing 9 is equal to the inner diameter of the collar 10. A clamping ring 11 with an annular cross-section is installed on the front side outside the collar 10. The inside of the clamping ring 11 is empty. Three evenly distributed gears 12 are arranged inside the clamping ring 11. One end of the gear 12 is rotatably connected to the inner wall with a smaller radius inside the clamping ring 11, and the other end is rotatably connected to the outer wall with a larger radius inside the clamping ring 11. Adjusting bolts 13 are installed on the rotating shafts of the gears 12 extending outside the clamping ring 11. By screwing the adjusting bolts 13, the gears 12 can rotate inside the clamping ring 11. In front of the gears 12, a rotating ring 14 is arranged inside the clamping ring 11. The inner diameter of the rotating ring 14 is equal to the smaller inner diameter inside the clamping ring 11, and the outer diameter of the rotating ring 14 is equal to the larger inner diameter inside the clamping ring 11, so that the rotating ring 14 can always rotate in contact with the gears 12.

[0021] The utility model is provided with an anti-detachment structure 15 between the rotating ring 14 and the clamping ring 11. A number of evenly distributed tooth grooves 16 are opened at the rear side of the rotating ring 14, so that the gears 12 can drive the rotating ring 14 to rotate inside the clamping ring 11 by rotation. Three evenly distributed clamping blocks 17 are arranged at the front side edge outside the clamping ring 11. The flange to be welded is centered and clamped by the synchronous mutual approach of the three clamping blocks 17. Silicone blocks are connected to the mutually approaching ends of the three clamping blocks 17 to increase the friction between the clamping blocks 17 and the flange. A limiting structure 18 is arranged between the clamping blocks 17 and the clamping ring 11, so that the three clamping blocks 17 can only move centeringly towards or away from each other to clamp or release the flange. A linkage structure 19 is arranged between the clamping blocks 17 and the rotating ring 14, and the rotation of the rotating ring 14 drives the three clamping blocks 17 to approach or move away from each other synchronously.

[0022] The utility model is provided with guide rails 20 with an L-shaped cross section on both sides of the upper end of the bottom plate 1, and pulleys 21 are provided on the front and rear of both sides of the slider 3. The pulleys 21 are stuck in the inside of the guide rails 20, so that the two sliders 3 can only slide back and forth in the inside of the guide rails 20 through the pulleys 21. A main anti-slip ring 22 is installed on the inner outer wall of the clamping ring 11, and a secondary anti-slip ring 23 is installed on the inner wall of the clamping ring 11. The swivel 14 is always attached to the gear 12 through the main anti-slip ring 22 and the secondary anti-slip ring 23. A sliding hole 24 for the movement of the clamping block 17 is opened on the front side of the outside of the clamping ring 11. Limiting strips 25 are installed on both sides of 7, and limiting grooves 26 for cooperating with the limiting strips 25 are opened on both sides of the sliding hole 24, so that the clamping block 17 can only move toward or away from each other along the limiting grooves 26 inside the sliding hole 24 through the limiting strips 25. A vortex toggle strip 27 is fixedly connected to the front side of the rotating ring 14, and a number of evenly distributed toggle posts 28 are installed on the rear side of the clamping block 17. The toggle posts 28 are stuck between the gaps of the vortex toggle strips 27. Through the rotation of the rotating ring 14, the vortex toggle strips 27 drive the toggle posts 28 to move toward or away from each other.

[0023] During the specific implementation of the present invention, the gear 12 is first screwed by adjusting the bolt 13 to move the three clamping blocks 17 away from each other, the flange to be welded is vertically placed between the clamping blocks 17, the adjusting bolt 13 is screwed to clamp the flange with the three clamping blocks 17, the pipe to be welded with the flange is placed on the two pipe supports 6, the lifting cylinder 5 is adjusted to make the pipe and the flange in a concentric circle position relationship, the pipe and the flange are assembled together by the slider 3, the worker welds the periphery of the joint of the flange and the pipe, and after welding one place, the surrounding area of the welding place can be welded by rotating the pipe, and the worker does not need to move around the flange.

[0024] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A flange welding clamping device, comprising a bottom plate (1), characterized in that: The rear side of the upper end of the base plate (1) is fixedly connected to a support plate (2), the front side of the upper end of the base plate (1) is provided with two sliders (3), a positioning structure (4) is provided between the sliders (3) and the base plate (1), the upper sides of the sliders (3) are fixedly connected to a lifting cylinder (5), the upper end of the lifting cylinder (5) is fixedly connected to a pipeline bracket (6), the bottom side of the pipeline bracket (6) is internally provided with rollers (7), the upper front end of the support plate (2) is fixedly connected to a mounting block (8), the outer side of the mounting block (8) is sleeved with a bearing (9), the outer side of the bearing (9) is sleeved with a collar (10), the outer front side of the collar (10) is fixedly connected to a clamping ring (11), the inner side of the clamping ring (11) is provided with a There are three evenly distributed gears (12), and the gears (12) are extended to the rotating shaft outside the clamping ring (11) and are fixedly connected with an adjusting bolt (13). A rotating ring (14) is provided inside the clamping ring (11) at the front side of the gear (12), and an anti-slip structure (15) is provided between the rotating ring (14) and the clamping ring (11). A plurality of evenly distributed tooth grooves (16) used to match the gears (12) are opened on the rear side of the rotating ring (14). Three evenly distributed clamping blocks (17) are provided at the front edge of the outside of the clamping ring (11), a limiting structure (18) is provided between the clamping block (17) and the clamping ring (11), and a linkage structure (19) is provided between the clamping block (17) and the rotating ring (14).

2. The flange welding clamping device according to claim 1, characterized in that: The positioning structure (4) includes guide rails (20) fixedly connected to both sides of the upper end of the base plate (1), and pulleys (21) used in conjunction with the guide rails (20) are provided at the front and rear of both sides of the slider (3).

3. A flange welding clamping device according to claim 1, characterized in that: The anti-slip structure (15) comprises a main anti-slip ring (22) fixedly connected to the inner outer wall of the clamping ring (11), a secondary anti-slip ring (23) fixedly connected to the inner inner wall of the clamping ring (11), and the main anti-slip ring (22) and the secondary anti-slip ring (23) are both located on the front side of the swivel (14).

4. The flange welding clamping device according to claim 1, characterized in that: The limiting structure (18) includes a sliding hole (24) provided on the front side of the outside of the clamping ring (11) for use with the clamping block (17), both sides of the clamping block (17) are fixedly connected to the limiting strips (25), and both sides of the inside of the sliding hole (24) are provided with limiting grooves (26) for use with the limiting strips (25).

5. A flange welding clamping device according to claim 1, characterized in that: The linkage structure (19) includes a vortex-shaped toggle bar (27) fixedly connected to the front side of the rotating ring (14), and a plurality of evenly distributed toggle posts (28) used in conjunction with the vortex-shaped toggle bar (27) are fixedly connected to the rear side of the clamping block (17).

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