Girth welding auxiliary tool for cylinder splicing

Abstract

The utility model relates to the field of machining, in particular to a girth welding auxiliary tool for cylinder splicing, which comprises an operating platform, two groups of positioning plates, a gear and gear ring structure, a positioning clamping block and a rotary structure, the two groups of positioning plates are fixedly mounted on two sides of the operating platform, and a group of positioning rings are rotationally arranged on the positioning plates. The two sets of positioning rings are driven by a gear and gear ring structure to rotate synchronously, the multiple sets of positioning clamping blocks are installed in the positioning rings in a sliding mode, driving screws are rotationally installed at the installation ends of the positioning clamping blocks, the driving screws and installation blocks on the positioning rings form spiral pair transmission, and the outer ends of the driving screws are rotationally connected with driving sleeves in a limiting mode. The driving sleeve is rotationally installed on the outer side of the positioning ring through the fixing support, and the rotation structure is installed on the outer side of the positioning ring and used for synchronously driving the multiple sets of driving screws to rotate and adjusting the clamping position of the positioning clamping block. And the fixing requirements of cylinders with different radial specifications are met.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to an auxiliary tooling for circumferential seam welding of cylinder body splicing. Background Art

[0002] During the machining of expansion joints, it is often necessary to weld the cylinder body to be machined. At present, the circumferential seam welding method is used for cylinder body splicing. After welding, the formed weld on the circumferential side of the cylinder body is a closed circular ring. Before welding, it is often necessary to use an auxiliary positioning device to coaxially fix the two groups of cylinders to be welded.

[0003] The existing commonly used auxiliary tooling for circumferential seam welding often needs to customize clamps of corresponding specifications when positioning the cylinder body, so the applicability of the tooling is poor. And after the auxiliary tooling is fixed, it needs to rely on manual driving to rotate the cylinder body, which has high requirements for workers. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary tooling for circumferential seam welding of cylinder body splicing, which is used to solve the problems that the existing commonly used auxiliary tooling for circumferential seam welding often needs to customize clamps of corresponding specifications when positioning the cylinder body, so the applicability of the tooling is poor, and after the auxiliary tooling is fixed, it needs to rely on manual driving to rotate the cylinder body, which has high requirements for workers.

[0005] To achieve the above purpose, the utility model provides an auxiliary tooling for circumferential seam welding of cylinder body splicing, including:

[0006] An operation platform;

[0007] Two positioning plates are vertically and parallelly fixedly installed on both sides of the operation platform. A group of positioning rings are rotatably arranged on the positioning plates, and the two positioning rings are coaxially arranged;

[0008] A gear and gear ring structure is installed on the operation platform and is used to drive the two positioning rings to rotate synchronously;

[0009] There are multiple positioning clamp blocks, which are used to clamp and fix both sides of the cylinder body. The positioning clamp blocks are slidably installed in the positioning rings along the radial direction of the positioning rings through multiple guide posts. The installation ends of the positioning clamp blocks are rotatably installed with driving screws. The driving screws form a screw pair transmission with the installation blocks on the positioning rings. The outer ends of the driving screws are limited and rotatably connected with driving sleeves. The driving sleeves are rotatably installed on the outer sides of the positioning rings through fixed brackets;

[0010] A slewing structure includes a slewing ring, a transmission bevel gear ring and multiple driven bevel gear rings. The slewing ring is rotatably installed on the outer side of the positioning ring. The transmission bevel gear ring is coaxially and fixedly installed on the outer side of the slewing ring. Multiple driven bevel gear rings are coaxially and fixedly installed on the outer sides of the corresponding driving sleeves and are meshed with the transmission bevel gear ring.

[0011] As a further solution of the present utility model, the gear and gear ring structure includes a transmission gear ring, a driving gear, a driving shaft and a power motor. Two groups of the transmission gear rings are fixedly installed on the outer sides of two groups of positioning rings. Two groups of the driving gears are rotatably installed on the adjacent sides of two groups of positioning plates and are in transmission engagement with the corresponding transmission gear rings. The rotating shafts of the two groups of driving gears are coaxially connected through the driving shaft. The power motor is installed on the operation platform and is used to drive the driving shaft to rotate.

[0012] As a further solution of the present utility model, the mounting block is provided with mounting holes for slidably installing multiple groups of guide posts.

[0013] As a further solution of the present utility model, multiple limiting strips are provided at one end of the driving screw away from the connecting positioning clamping block, and sliding grooves for sliding connection with the limiting strips are provided on the inner wall of the driving sleeve.

[0014] As a further solution of the present utility model, convex blocks for applying force by personnel are provided on the outer side of the rotary ring.

[0015] Compared with the prior art, the present utility model coaxially arranges two groups of rotatable positioning rings on two groups of positioning plates. The two groups of positioning rings are driven by the gear and gear ring structure to rotate synchronously. At the same time, the rotary ring in the rotary structure rotates, and through the sequential transmission of the transmission bevel gear ring, multiple groups of driven bevel gear rings and multiple groups of driving sleeves, the driving screw is driven to rotate, so that the driving screw and the positioning clamping block move along the radial direction of the positioning ring. The positioning clamping block can meet the clamping and fixing requirements of cylinders of different size specifications, solving the problems that the commonly used existing circumferential seam welding auxiliary tooling often needs to customize corresponding specifications of jigs when positioning the cylinder, the applicability of the tooling is poor, and after the auxiliary tooling is fixed, it needs to rely on manual driving of the cylinder to rotate, which has high requirements for manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a circumferential seam welding auxiliary tooling for splicing cylinders of the present utility model.

[0017] Figure 2 It is a partial side view structural diagram of the positioning plate of the present utility model.

[0018] Figure 3 For the present utility model Figure 1 The enlarged schematic diagram at position A in it.

[0019] Figure 4 For the present utility model Figure 2 The enlarged schematic diagram at position B in it.

[0020] In the attached drawings: 1. Operating platform; 2. Cylinder body; 3. Positioning plate; 4. Positioning ring; 5. Driving gear ring; 6. Driving gear; 7. Driving shaft; 8. Transmission belt; 9. Power motor; 10. Rotary ring; 11. Driving bevel gear ring; 12. Driven bevel gear ring; 13. Driving screw; 131. Limit strip; 14. Mounting block; 15. Guide post; 16. Positioning clamp block; 17. Driving sleeve. Detailed implementation manners

[0021] The technical solutions of the present utility model will be further described in detail below in combination with the specific implementation manners.

[0022] As Figures 1 to 4 shown, in the embodiment of the present utility model, a circumferential weld welding auxiliary tooling for cylinder body splicing includes an operating platform 1; two groups of positioning plates 3 which are vertically and parallelly fixedly installed on both sides of the operating platform 1, and a group of positioning rings 4 are rotatably arranged on the positioning plates 3, and the two groups of positioning rings 4 are coaxially arranged; a gear and gear ring structure is installed on the operating platform 1 for driving the two groups of positioning rings 4 to rotate synchronously; a plurality of positioning clamp blocks 16 are used for clamping and fixing both sides of the cylinder body 2, and the positioning clamp blocks 16 are slidably installed in the positioning rings 4 along the radial direction of the positioning rings 4 through a plurality of guide posts 15. The installation ends of the positioning clamp blocks 16 are rotatably installed with driving screws 13, and the driving screws 13 form a screw pair transmission with the mounting blocks 14 on the positioning rings 4. The outer ends of the driving screws 13 are in limit rotational connection with driving sleeves 17, and the driving sleeves 17 are rotatably installed outside the positioning rings 4 through fixed brackets; a rotary structure includes a rotary ring 10, a driving bevel gear ring 11 and a plurality of driven bevel gear rings 12. The rotary ring 10 is rotatably installed outside the positioning ring 4, the driving bevel gear ring 11 is coaxially and fixedly installed outside the rotary ring 10, and the plurality of driven bevel gear rings 12 are coaxially and fixedly installed outside the corresponding driving sleeves 17 and are meshed with the driving bevel gear ring 11.

[0023] Specifically, in the present utility model, the two groups of positioning rings 4 are driven to rotate synchronously through the gear and gear ring structure, replacing manual operation to achieve the stable rotation of the two groups of positioning rings 4. At the same time, through the rotation of the rotary ring 10 in the rotary structure, and in cooperation with the meshing transmission of the driving bevel gear ring 11 and the plurality of driven bevel gear rings 12, the plurality of driving sleeves 17 are driven to rotate synchronously. While the driving sleeves 17 are rotating, the limit transmission belt 8 drives the driving screws 13 to rotate, so that the driving screws 13 and the positioning clamp blocks 16 move along the radial direction of the positioning rings 4, and the positioning clamp blocks 16 can meet the clamping and fixing requirements of cylinder bodies 2 with different size specifications.

[0024] As Figure 1As shown, in the embodiment of the present utility model, the gear and ring structure includes a transmission ring 5, a driving gear 6, a driving shaft 7, and a power motor 9. Two groups of the transmission rings 5 are fixedly installed on the outer sides of two groups of positioning rings 4. Two groups of the driving gears 6 are rotatably installed on the adjacent sides of two groups of positioning plates 3 and are in transmission engagement with the corresponding transmission rings 5. The rotating shafts of two groups of the driving gears 6 are coaxially connected through the driving shaft 7. The power motor 9 is installed on the operation platform 1 and is used to drive the driving shaft 7 to rotate. Preferably, the output shaft of the power motor 9 is in transmission connection with the driving shaft 7 through a transmission belt 8. When driving the positioning ring 4 to rotate, the power motor 9 is started. The power motor 9 drives the two groups of positioning rings 4 to rotate coaxially through the sequential transmission of the driving shaft 7, the driving gear 6, and the transmission ring 5;

[0025] As Figure 2 and Figure 4 As shown, in the embodiment of the present utility model, the mounting block 14 is provided with mounting holes for sliding installation of multiple groups of guide posts 15. When the driving sleeve 17 drives the driving screw 13 to rotate through the transmission belt 8, the multiple groups of guide posts 15 are used for guiding and limiting to prevent the positioning fixture from deflecting driven by the driving screw 13.

[0026] As Figure 3 As shown, in the embodiment of the present utility model, multiple limiting strips 131 are provided at one end of the driving screw 13 away from the connecting positioning clamp block 16. The inner wall of the driving sleeve 17 is provided with sliding grooves slidably connected with the limiting strips 131. When the driving sleeve 17 drives the driving screw 13 to rotate, since the driving screw 13 is in threaded transmission with the mounting block 14, the driving screw 13 linearly moves along the axis of the driving sleeve 17;

[0027] Furthermore, a convex block for applying force by personnel is provided on the outer side of the rotating ring 10, and the convex block is provided to facilitate the rotation of the rotating ring 10 by personnel.

[0028] To sum up, the present utility model coaxially arranges two groups of rotatable positioning rings 4 on two groups of positioning plates 3. The two groups of positioning rings 4 are driven by the gear and ring structure to rotate synchronously. At the same time, the rotating ring 10 in the rotating structure rotates, and through the sequential transmission of the transmission bevel gear ring 11, multiple groups of driven bevel gear rings 12, and multiple groups of driving sleeves 17, the driving screw 13 is driven to rotate, so that the driving screw 13 and the positioning clamp block 16 move along the radial direction of the positioning ring 4. The positioning clamp block 16 can meet the clamping and fixing requirements of cylinders 2 of different size specifications, solving the problems that the commonly used existing circumferential seam welding auxiliary tooling often needs to customize corresponding specifications of fixtures when positioning the cylinder 2, the applicability of the tooling is poor, and after the auxiliary tooling is fixed, it needs to rely on manual driving of the cylinder 2 to rotate, which has high requirements for personnel.

[0029] The above describes in detail the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An auxiliary tooling for circumferential seam welding in the splicing of a cylinder body, characterized in that, Comprising: Operating platform; Positioning plates, two groups in number, vertically and parallelly fixedly installed on both sides of the operating platform. A group of positioning rings are rotatably arranged on the positioning plates, and the two groups of positioning rings are coaxially arranged; Gear and gear ring structure, installed on the operating platform, for driving the two groups of positioning rings to rotate synchronously; Positioning clamping blocks, multiple groups in number, for clamping and fixing on both sides of the cylinder body. The positioning clamping blocks are slidably installed in the positioning rings along the radial direction of the positioning rings through multiple groups of guide posts. A driving screw is rotatably installed at the installation end of the positioning clamping block. The driving screw forms a screw pair transmission with the installation block on the positioning ring. The outer end of the driving screw is limitedly rotatably connected to a driving sleeve, and the driving sleeve is rotatably installed outside the positioning ring through a fixed bracket; Rotating structure, including a rotating ring, a driving bevel gear ring and multiple groups of driven bevel gear rings. The rotating ring is rotatably installed outside the positioning ring. The driving bevel gear ring is coaxially fixedly installed outside the rotating ring. Multiple groups of driven bevel gear rings are coaxially fixedly installed outside the corresponding driving sleeves and are meshed with the driving bevel gear ring.

2. The auxiliary tooling for circumferential seam welding in the splicing of a cylinder body according to claim 1, wherein, The gear and gear ring structure includes a driving gear ring, driving gears, driving shafts and power motors. The two groups of driving gear rings are fixedly installed outside the two groups of positioning rings. The two groups of driving gears are rotatably installed on the adjacent sides of the two groups of positioning plates and are in transmission meshing with the corresponding driving gear rings. The rotating shafts of the two groups of driving gears are coaxially connected through the driving shafts. The power motors are installed on the operating platform for driving the driving shafts to rotate.

3. The auxiliary tooling for circumferential seam welding in the splicing of a cylinder body according to claim 1, characterized in that, The installation block is provided with installation holes for the multiple groups of guide posts to be slidably installed.

4. The auxiliary tooling for circumferential seam welding in the splicing of a cylinder body according to claim 1, wherein, The end of the driving screw far from connecting the positioning clamping block is provided with a plurality of limiting strips, and the inner wall of the driving sleeve is provided with sliding grooves for sliding connection with the limiting strips.

5. An auxiliary tooling for circumferential seam welding in the splicing of a cylinder body according to claim 1, characterized in that, The outer side of the rotating ring is provided with a convex block for personnel to apply force.

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