Automatic centering assembly device for flanges for steel pipes

Abstract

The utility model discloses an automatic centering assembly device for a flange for a steel pipe, and belongs to the field of steel pipe machining. The device comprises a centering block slidably arranged on the surface of a flange fixing frame, the position of a flange is fixed through a supporting block on the surface of the centering block, a gap block is arranged at the end of the supporting block, the side, close to the centering block, of the gap block makes contact with the flange, and the flange is prevented from falling off in the fixing process by fixing the position of the flange; meanwhile, a welding seam gap is provided when the flange and the steel pipe are aligned and welded, photoelectric sensors are arranged on the surfaces of the gap blocks, when light beams emitted by the photoelectric sensors are shielded, signal changes occur, and when signals of all the photoelectric sensors change, it is indicated that the gap blocks are aligned with the steel pipe; the driving gear rotates to change the vertical position of the centering block, when steel pipes with different diameters are fixed to the surface of the supporting block, the centers of the steel pipes change in the vertical direction, and the flange and the steel pipes can be rapidly centered by rotating the driving gear and paying attention to the state of the photoelectric sensor.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing, and in particular to an automatic centering and assembly device for steel pipe flanges. Background Technology

[0002] As a structural component for connecting steel pipe rods, a flange can connect two steel pipe rods together and play a role in connection and reinforcement. Generally, the flange needs to be fitted onto the surface of the steel pipe, and a gap is made between the two by welding rods before the flange is welded to the surface of the steel pipe.

[0003] When installing flanges on some larger diameter steel pipes, auxiliary devices are needed to ensure that the centers of the two are aligned. One method involves using two intersecting X-shaped rods to support the steel pipes, with the distance between the ends of the two rods adjustable to support steel pipes of various diameters. A disc is placed at a certain distance from the rods to fix the flange. However, when using the above auxiliary devices to assist in the installation of steel pipes and flanges, the center position of the steel pipes after support varies due to the different diameters of the pipes. The disc used requires manual adjustment of the flange position. When a deviation is found between the flange and the center of the steel pipe, tedious manual adjustments are required, which is time-consuming, labor-intensive, and difficult to ensure the accuracy of the adjustments, thus affecting the assembly efficiency and quality stability.

[0004] In summary, the existing steel pipe flange auxiliary assembly device has the problem that the center position of the steel pipe changes after support due to different steel pipe diameters, and the disc needs to be manually adjusted when fixing the flange, which is cumbersome, time-consuming and labor-intensive, and it is difficult to guarantee the adjustment accuracy. Utility Model Content

[0005] This utility model provides an automatic centering and assembly device for steel pipe flanges, which can solve the problems of existing auxiliary assembly devices for steel pipe flanges where the center position of the steel pipe changes after support due to different steel pipe diameters, and the disc needs to be manually adjusted when fixing the flange, which is cumbersome, time-consuming, labor-intensive and difficult to guarantee adjustment accuracy.

[0006] An automatic centering and assembly device for steel pipe flanges includes a plurality of support rods and a flange fixing frame. The support rods are arranged in pairs, with the two support rods rotatably mounted and their opposing surfaces in contact with the steel pipe. The flange fixing frame is provided with a centering mechanism, which includes:

[0007] The centering block is slidably disposed on the surface of the flange fixing frame. A central rod is fixedly connected to the surface of the centering block. Several support blocks are slidably connected to the surface of the central rod. The several support blocks are arranged in a ring array relative to the central rod. The several support blocks are in contact with the inner hole of the flange. A gap block is fixedly connected to the end of each support block. A photoelectric sensor is fixedly connected inside each gap block.

[0008] A drive gear is rotatably disposed inside the centering block. Several driving teeth are fixedly connected to the surface of the flange fixing bracket. The drive gear meshes with the driving teeth. A drive assembly is disposed between the drive gear and the photoelectric sensor.

[0009] Optionally, each end of the support rod is rotatably connected to a sliding block, and the sliding block inside the same group of support rods is threadedly connected to a bidirectional screw. Several moving blocks are slidably connected to the surface of the flange fixing frame, and the bidirectional screw is rotatably disposed inside the moving blocks.

[0010] Optionally, a drive rod is rotatably connected inside the flange fixing bracket, the drive rod is threadedly connected to the moving block, and two guide rods are fixedly connected to the surface of the flange fixing bracket. The guide rods pass through several moving blocks, and the two guide rods are symmetrically arranged relative to the drive rod; the drive rod and the bidirectional lead screw are staggered.

[0011] Optionally, a driving rod is rotatably connected to the surface of the central rod, a driving ring is threadedly connected to the surface of the driving rod, a driving shaft is rotatably connected to the surface of the driving ring, a driving column is rotatably connected to the surface of the central rod, the driving column and the driving shaft are rotatably connected, and the ends of the driving column and the driving shaft are rotatably connected to the support block.

[0012] Optionally, the center rod includes a fixed rod, which is fixedly connected to the centering block, and the fixed rod passes through the drive ring.

[0013] Optionally, the support block has a sliding groove on its surface, and a sliding column is fixedly connected to the end of the drive shaft, with the sliding column slidably connected to the sliding groove.

[0014] Optionally, the drive assembly includes a drive motor fixedly mounted on the surface of the centering block, a drive shaft fixedly mounted at the end of the output shaft of the drive motor, and the drive shaft fixedly mounted with a drive gear.

[0015] Optionally, a central gear is fixedly connected to the surface of the drive rod, and the drive gear is slidably disposed on the surface of the drive shaft, with the central gear meshing with the drive gear.

[0016] Optionally, a push rod is slidably connected to the surface of the drive gear, and a cylinder is fixedly connected inside the centering block, with the end of the piston rod inside the cylinder fixedly connected to the end of the push rod.

[0017] Optionally, a PLC controller is fixedly connected to the surface of the flange mounting bracket. The PLC controller is connected to the output terminal of the photoelectric sensor, and the output terminal of the PLC controller is electrically connected to the drive motor and the moving motor.

[0018] This utility model provides an automatic centering and assembly device for steel pipe flanges, including a centering block slidably disposed on the surface of a flange fixing frame. The position of the flange is fixed by a support block on the surface of the centering block, and a gap block is provided at the end of the support block. The gap block contacts the flange on the side close to the centering block, fixing the flange position and preventing the flange from falling off during the fixing process. At the same time, it provides a weld gap when the flange and steel pipe are aligned and welded, ensuring the welding quality. A photoelectric sensor is disposed on the surface of the gap block. When the light beam emitted by the photoelectric sensor is blocked, a signal change will occur. When all photoelectric sensor signals change, it indicates that the gap block is aligned with the steel pipe, and the center of the flange and the steel pipe are on the same horizontal line. A sliding drive gear is disposed inside the centering block. The contact between the drive gear and the driving gear causes the drive gear to rotate, changing the position of the centering block. When steel pipes of different diameters are fixed on the surface of the support block, the center of the steel pipe changes in the vertical direction. By rotating the drive gear, the centering block is moved in the vertical direction. By monitoring the status of the photoelectric sensors, the centering of the flange and the steel pipe can be quickly achieved. Attached Figure Description

[0019] Figure 1 A schematic diagram of an automatic centering and assembly device for steel pipe flanges provided by this utility model;

[0020] Figure 2 A three-dimensional sectional view of the transfer gear provided by this utility model;

[0021] Figure 3 Provided by this utility model Figure 2 Enlarged view of the local structure at point A;

[0022] Figure 4 An exploded three-dimensional view of the flange fixing bracket and centering block provided by this utility model;

[0023] Figure 5 A diagram showing the usage state of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Support rod; 2. Flange mounting bracket;

[0026] 31. Centering block; 32. Center rod; 33. Support block; 34. Clearance block; 35. Photoelectric sensor; 36. Drive gear;

[0027] 41. Moving block; 42. Two-way lead screw; 43. Drive rod; 44. Guide rod;

[0028] 51. Drive rod; 52. Drive ring; 53. Drive shaft; 54. Drive column; 55. Sliding groove; 56. Sliding column;

[0029] 61. Drive motor; 62. Drive shaft; 63. Central gear; 64. Push rod; 65. Cylinder. Detailed Implementation

[0030] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0031] like Figures 1 to 5 As shown in the figure, an automatic centering and assembly device for steel pipe flanges provided in this embodiment of the present invention includes a plurality of support rods 1 and a flange fixing frame 2. The plurality of support rods 1 are arranged in pairs, and the two support rods 1 are rotatably arranged with their opposing surfaces in contact with the steel pipe. The flange fixing frame 2 is provided with a centering mechanism, which includes:

[0032] A centering block 31 is slidably disposed on the surface of the flange fixing bracket 2. A damping device is fixedly connected between the centering block 31 and the flange fixing bracket 2. A central rod 32 is fixedly connected to the surface of the centering block 31. A plurality of support blocks 33 are slidably connected to the surface of the central rod 32. The plurality of support blocks 33 are arranged in a ring array relative to the central rod 32. The plurality of support blocks 33 are in contact with the inner hole of the flange. A gap block 34 is fixedly connected to the end of each support block 33. A photoelectric sensor 35 is fixedly connected inside each gap block 34.

[0033] A drive gear 36 is rotatably disposed inside the centering block 31. Several driving teeth are fixedly connected to the surface of the flange fixing bracket 2. The drive gear 36 meshes with the driving teeth. A drive assembly is provided between the drive gear 36 and the photoelectric sensor 35 to control the rotation and stop of the drive gear 36.

[0034] In summary, the automatic centering and assembly device for steel pipe flanges provided by this utility model embodiment includes a centering block 31 slidably disposed on the surface of the flange fixing frame 2. The flange position is fixed by a support block 33 on the surface of the centering block 31. A gap block 34 is provided at the end of the support block 33, with the gap block 34 contacting the flange on the side near the centering block 31. This fixes the flange position and prevents it from falling off during the fixing process. Simultaneously, it provides a weld gap during the alignment and welding of the flange and steel pipe, ensuring welding quality. A photoelectric sensor 35 is disposed on the surface of the gap block 34. When the light beam emitted by the photoelectric sensor 35 is blocked, it will... When a signal change occurs, it indicates that the gap block 34 is aligned with the steel pipe, and the center of the flange and the steel pipe are on the same horizontal line. The centering block 31 is equipped with a sliding drive gear 36. The contact between the drive gear 36 and the driving tooth causes the drive gear 36 to rotate, which changes the position of the centering block 31. When steel pipes of different diameters are fixed on the surface of the support block 33, the center of the steel pipe changes in the vertical direction. By rotating the drive gear 36, the centering block 31 is moved in the vertical direction. At the same time, by monitoring the status of the photoelectric sensor 35, the centering of the flange and the steel pipe can be quickly achieved.

[0035] In some specific implementations, each end of the support rod 1 is rotatably connected to a sliding block, and the sliding block inside the support rod 1 in the same group is threadedly connected to a bidirectional screw 42. Several moving blocks 41 are slidably connected to the surface of the flange fixing bracket 2, and the bidirectional screw 42 is rotatably disposed inside the moving block 41.

[0036] In a further embodiment, a drive rod 43 is rotatably connected inside the flange fixing frame 2. The drive rod 43 is threadedly connected to the moving block 41. Two guide rods 44 are fixedly connected to the surface of the flange fixing frame 2. The guide rods 44 pass through several moving blocks 41, and the two guide rods 44 are symmetrically arranged relative to the drive rod 43. The drive rod 43 and the bidirectional lead screw 42 are staggered.

[0037] In a further embodiment, a movable motor is fixedly connected to the surface of the flange mounting bracket 2, the end of the output shaft of the movable motor is fixedly connected to the drive rod 43, and the movable motor is electrically connected to an external power source.

[0038] The motor can drive the drive rod 43 to rotate, causing the moving block 41 to slide, which in turn causes the overall support rod 1 to slide, causing the steel pipe on the surface of the support rod 1 to move toward the flange fixing frame 2, fixing the steel pipe to the flange on the surface of the flange fixing frame 2, so that the two can be aligned and assembled.

[0039] In some specific implementations, a driving rod 51 is rotatably connected to the surface of the central rod 32, a driving ring 52 is threadedly connected to the surface of the driving rod 51, a driving shaft 53 is rotatably connected to the surface of the driving ring 52, and a driving column 54 is rotatably connected to the surface of the central rod 32. The driving column 54 and the driving shaft 53 are rotatably connected, and the ends of the driving column 54 and the driving shaft 53 are rotatably connected to the support block 33. Rotating the driving rod 51 can cause the driving ring 52 to slide, which in turn causes the driving shaft 53 to rotate, causing the support block 33 to slide, which in turn causes the driving column 54 to rotate, moving the support block 33 away from the central rod 32.

[0040] In a further embodiment, the center rod 32 includes a fixed rod, which is fixedly connected to the centering block 31 and passes through the drive ring 52; the fixed rod maintains the position of the center rod 32 and restricts the drive ring 52 to slide only on the surface of the drive rod 51;

[0041] In a further embodiment, a sliding groove 55 is provided on the surface of the support block 33, and a sliding column 56 is fixedly connected to the end of the drive shaft 53, and the sliding column 56 is slidably connected to the sliding groove 55.

[0042] In some specific implementations, the drive assembly includes a drive motor 61 fixedly mounted on the surface of the centering block 31, and a drive shaft 62 fixedly mounted at the end of the output shaft of the drive motor 61. The drive shaft 62 is fixedly mounted with a drive gear 36. The drive motor 61 directly drives the drive shaft 62 to rotate, thereby causing the drive gear 36 to rotate. The drive gear 36 slides on the drive tooth surface, causing the centering block 31 to slide on the surface of the flange mounting bracket 2.

[0043] In a further embodiment, a central gear 63 is fixedly connected to the surface of the drive rod 51, and the drive gear 36 is slidably disposed on the surface of the drive shaft 62, with the central gear 63 meshing with the drive gear 36; a push rod 64 is slidably connected to the surface of the drive gear 36, and a cylinder 65 is fixedly connected inside the centering block 31, with the end of the piston rod inside the cylinder 65 fixedly connected to the end of the push rod 64; the position of the drive gear 36 on the surface of the drive shaft 62 can be controlled by the cylinder 65, controlling the drive gear 36 to mesh with the drive gear or with the central gear 63; and controlling the rotation of different structures inside the centering block 31;

[0044] In some specific implementations, a PLC controller (not shown in the figure) is fixedly connected to the surface of the flange mounting bracket 2. The PLC controller (not shown in the figure) is connected to the output terminal of the photoelectric sensor 35, and the output terminal of the PLC controller (not shown in the figure) is electrically connected to the drive motor 61 and the moving motor.

[0045] The working principle of this utility model:

[0046] In use, first place the flange on the surface of the support block 33, ensuring its side is in contact with the gap block 34. Then, control the cylinder 65 to activate the drive motor 61, which in turn starts the drive rod 51, causing the drive ring 52 to slide. This causes the drive shaft 53 and drive column 54 to rotate, resulting in the sliding of several support blocks 33. Once the flange inner hole is in contact with all support blocks 33, turn off the drive motor 61 and reset the drive gear 36 using the cylinder 65. Then, place the steel pipe on the surface of the support rod 1. If the steel pipe and flange are not aligned, several... Not all the signals from the photoelectric sensors 35 will change. At this time, the drive motor 61 is turned on, causing the drive gear 36 to rotate. The drive gear 36 meshes with the driving gear, and the centering block 31 slides on the surface of the flange fixing bracket 2. After all the signals from the photoelectric sensors 35 have changed, the drive motor 61 is turned off, and the moving motor is turned on again, causing the moving block 41 to move closer to the flange fixing bracket 2, driving the steel pipe to contact the gap block 34. Finally, welding is performed. After the steel pipe and flange are spot welded, the drive motor 61 drives all the support blocks 33 to detach from the flange, and then the welding is completed.

[0047] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An automatic centering and assembling device for flanges of steel pipes, comprising a plurality of support bars (1) and a flange fixing frame (2), two of said support bars (1) being arranged in a group, said two support bars (1) being rotatably arranged and having opposite surfaces in contact with the steel pipe, characterized in that, The flange fixing bracket (2) is provided with an alignment mechanism on its surface, the alignment mechanism comprising: A centering block (31) is slidably disposed on the surface of the flange fixing bracket (2). A center rod (32) is fixedly connected to the surface of the centering block (31). A plurality of support blocks (33) are slidably connected to the surface of the center rod (32). The plurality of support blocks (33) are arranged in a ring array relative to the center rod (32). The plurality of support blocks (33) are in contact with the inner hole of the flange. A gap block (34) is fixedly connected to the end of each support block (33). A photoelectric sensor (35) is fixedly connected inside each gap block (34). A drive gear (36) is rotatably disposed inside the centering block (31). Several driving teeth are fixedly connected to the surface of the flange fixing bracket (2). The drive gear (36) meshes with the driving teeth. A drive assembly is disposed between the drive gear (36) and the photoelectric sensor (35).

2. The automatic centering and assembly device for steel pipe flanges as described in claim 1, characterized in that, Each end of the support rod (1) is rotatably connected to a sliding block. The sliding block inside the support rod (1) in the same group is threaded with a two-way screw rod (42). Several moving blocks (41) are slidably connected to the surface of the flange fixing frame (2). The two-way screw rod (42) is rotatably arranged inside the moving block (41).

3. The automatic centering and assembly device for steel pipe flanges as described in claim 2, characterized in that, The flange fixing bracket (2) is rotatably connected to a drive rod (43), which is threadedly connected to a moving block (41). Two guide rods (44) are fixedly connected to the surface of the flange fixing bracket (2). The guide rods (44) pass through several moving blocks (41), and the two guide rods (44) are symmetrically arranged relative to the drive rod (43). The drive rod (43) and the bidirectional lead screw (42) are staggered.

4. The automatic centering and assembly device for steel pipe flanges as described in claim 1, characterized in that, A drive rod (51) is rotatably connected to the surface of the central rod (32), a drive ring (52) is threadedly connected to the surface of the drive rod (51), a drive shaft (53) is rotatably connected to the surface of the drive ring (52), a drive column (54) is rotatably connected to the surface of the central rod (32), the drive column (54) and the drive shaft (53) are rotatably connected, and the ends of the drive column (54) and the drive shaft (53) are rotatably connected to the support block (33).

5. The automatic centering and assembly device for steel pipe flanges as described in claim 4, characterized in that, The center rod (32) includes a fixed rod, which is fixedly connected to the centering block (31) and passes through the drive ring (52).

6. The automatic centering and assembly device for steel pipe flanges as described in claim 4, characterized in that, The support block (33) has a sliding groove (55) on its surface, and a sliding column (56) is fixedly connected to the end of the drive shaft (53). The sliding column (56) is slidably connected to the sliding groove (55).

7. The automatic centering and assembly device for steel pipe flanges as described in claim 4, characterized in that, The drive assembly includes a drive motor (61) fixedly mounted on the surface of the centering block (31), and a drive shaft (62) fixedly mounted at the end of the output shaft of the drive motor (61). The drive shaft (62) is fixedly mounted with a drive gear (36).

8. The automatic centering and assembly device for steel pipe flanges as described in claim 7, characterized in that, A central gear (63) is fixedly connected to the surface of the drive rod (51), and the drive gear (36) is slidably disposed on the surface of the drive shaft (62). The central gear (63) meshes with the drive gear (36).

9. The automatic centering and assembly device for steel pipe flanges as described in claim 1, characterized in that, The drive gear (36) is slidably connected to a push rod (64), and the centering block (31) is fixedly connected to a cylinder (65). The end of the piston rod inside the cylinder (65) is fixedly connected to the end of the push rod (64).

10. The automatic centering and assembly device for steel pipe flanges as described in claim 7, characterized in that, A PLC controller is fixedly connected to the surface of the flange mounting bracket (2). The PLC controller is connected to the output terminal of the photoelectric sensor (35). The output terminal of the PLC controller is electrically connected to the drive motor (61) and the moving motor.

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