Shell section surfacing positioning structure

Abstract

The utility model relates to the technical field of welding, and discloses a shell ring surfacing positioning structure which comprises a rotating base and a bearing platform, the bearing platform is installed on the rotating base, the shell ring surfacing positioning structure further comprises a plurality of bearing rods and fixing blocks with the same number, the bearing rods are arranged on the bearing platform, and grooves are formed in the bearing rods. The fixing blocks are sequentially arranged in the grooves in the bearing rod and can slide in the grooves, and the bearing rod faces the center of the bearing platform so that all the fixing blocks can slide towards the center of the bearing platform, and therefore the shell ring is fixed to the bearing platform. The technical problems that in the prior art, when a shell ring is welded, an adopted positioner is high in cost and difficult to use in a narrow space are solved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to an auxiliary positioning device for cylindrical section overlay welding. Background Technology

[0002] In the existing cylindrical section welding process, the traditional fixing method is to use a positioner to fix or move the cylindrical section, tube sheet and other structures. However, there are some obvious limitations to using a positioner for welding: 1. The positioner is generally quite tall, which increases the installation and use time and cannot be used in confined spaces; 2. The positioner involves complex mechanical structures and technical requirements, and the cost of manufacturing and use is relatively high. Utility Model Content

[0003] To address the high cost and operating expenses of positioners used in existing cylindrical section welding techniques, this invention proposes a cylindrical section welding positioning structure.

[0004] The cylindrical section welding positioning structure includes a rotating base and a bearing platform. The bearing platform is installed on the rotating base and also includes a plurality of bearing rods and the same number of fixing blocks. The bearing rods are set on the bearing platform and have grooves. The fixing blocks are sequentially set in the grooves on the bearing rods and can slide in the grooves, so that all the fixing blocks can be close to or away from the center of the bearing platform.

[0005] The aforementioned cylindrical section welding positioning structure also includes extension rods, wherein the number of extension rods is the same as the number of fixing blocks, and the extension rods fit the shape of the groove. The extension rods are set in the groove, and the fixing blocks are connected to the end of the extension rods away from the center of the bearing platform.

[0006] The aforementioned cylindrical section welding positioning structure has bolt holes on both sides of the groove for fastening the extension rod, and after the corresponding bolts are screwed in and fixed, their top ends are not higher than the support surface of the bearing rod.

[0007] The aforementioned cylindrical section welding positioning structure has four support rods and a circular support platform. The support rods are arranged perpendicular to each other and to the tangent of the support platform.

[0008] The aforementioned cylindrical section welding positioning structure has an internal thread running through the fixing block, and the cylindrical section is fixed by a tightening bolt that matches the internal thread.

[0009] The beneficial effects of this utility model include: by setting a plurality of bearing rods on the bearing platform and setting a fixing block in the groove of the bearing rod, the cylindrical section to be welded is fixed, thereby providing a low-cost and efficient cylindrical section welding positioning structure, which solves the technical problems of high cost and difficulty in use in narrow spaces when using positioners for cylindrical section welding in the prior art. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of one embodiment of the cylindrical section welding positioning structure of this utility model.

[0011] Figure 2 This is a side view of one embodiment of the cylindrical section welding positioning structure of this utility model.

[0012] Figure 3 This is a side sectional view of the fixing block in one embodiment of the cylindrical section welding positioning structure of this utility model.

[0013] Figure 4 This is a schematic diagram showing the connection relationship between the extension rod and the fixing block in one embodiment of the cylindrical section welding positioning structure of this utility model.

[0014] Figure 5 This is a top view of one embodiment of the cylindrical section welding positioning structure of this utility model.

[0015] The markings in the diagram are: 1-rotating base, 2-supporting platform, 3-supporting rod, 31-groove, 32-bolt hole, 4-fixing block, 5-extension rod. Detailed Implementation

[0016] The present invention will now be described with reference to the accompanying drawings.

[0017] Example 1:

[0018] like Figure 5 The diagram shows the cylindrical section welding positioning structure of this utility model, which includes a rotating base 1 and a supporting platform 2. The supporting platform 2 is mounted on the rotating base 1. It also includes a plurality of supporting rods 3 and the same number of fixing blocks 4. The supporting rods 3 are provided with grooves 31. The fixing blocks 4 are arranged in the grooves 31 on the supporting rods 3 and can slide in the grooves 31. After the cylindrical section is placed on the supporting platform 2, all the fixing blocks 4 can slide close to the center of the supporting platform 2, applying pressure to the cylindrical section in all directions, thereby fixing the cylindrical section on the supporting platform 2. If it is necessary to release the fixation, all the fixing blocks 4 can be slid away from the center of the supporting platform 2.

[0019] Furthermore, the aforementioned cylindrical section welding positioning structure also includes an extension rod 5. The number of extension rods 5 is the same as the number of fixing blocks 4, and the extension rods 5 fit the shape of the groove 31. The extension rods 5 are set in the groove 31, and the fixing blocks 4 are connected to the end of the extension rods 5 away from the center of the bearing platform 2, so that the fixing blocks 4 can slide out of the groove 31, thereby fixing the sleeve with a larger radius.

[0020] Furthermore, bolt holes 32 are provided on both sides of the groove 31 for tightening the extension rod 5. After the corresponding bolts are screwed in and fixed, the top of the bolts is not higher than the support surface of the bearing rod 3, so that the fixing block 4 can slide in the groove 31 and be fixed by the bolts. While limiting the position of the fixing block 4, the protruding bolts will not limit the selection of the cylindrical section applicable to this utility model.

[0021] When using the utility model described in the above embodiment, first slide the extension rod 5 and the fixing block 4 to the outermost position, then place the cylindrical section to be fixed at the center of the bearing platform 2, and then slide the extension rod 5 and the fixing block 4 close to the center of the bearing platform 2 until the fixing blocks 4 in all three directions are in contact with the cylindrical section and generate pressure, so that the cylindrical section can be fixed on the bearing platform, and the rotation angle of the cylindrical section can be adjusted by operating the rotating base 1.

[0022] Example 2:

[0023] like Figures 1-4 The diagram shows the cylindrical section welding positioning structure of this utility model. Based on the structure described in Embodiment 1, the bearing rods 3 are further configured as four, and the bearing platform 2 is circular. The bearing rods 3 are perpendicular to the tangent of the bearing platform 2, thereby making the force on the cylindrical section more uniform and the fixing effect better.

[0024] Furthermore, the fixing block 4 is provided with an internal thread, and when fixing the cylinder section, the fixing block 4 is fixed by a tightening bolt that matches the internal thread.

[0025] When using the utility model described in the above embodiment, first slide the extension rod 5 and the fixing block 4 together to the outermost position, then place the cylinder section to be fixed at the center of the bearing platform 2, and then slide the extension rod 5 and the fixing block 4 close to the center of the bearing platform 2 until the fixing blocks 4 in the four directions contact the cylinder section. Then, screw the screws into the corresponding internal threads on the fixing blocks 4 until they press against the circumference of the cylinder section to be welded, so that the cylinder section is relatively stably fixed on the bearing platform 2.

[0026] Compared with the prior art, the cylindrical section welding positioning structure provided by this utility model fixes the cylindrical section by setting a plurality of bearing rods and fixing blocks. Compared with the positioner, it has a simpler structure and smaller size, and solves the technical problems of the high cost and difficulty of use in narrow spaces of the positioner used in the prior art when welding cylindrical sections.

Claims

1. A cylindrical section welding positioning structure, comprising a rotating base (1) and a bearing platform (2), wherein the bearing platform (2) is mounted on the rotating base (1), characterized in that: It also includes a plurality of support rods (3) and the same number of fixing blocks (4). The support rods (3) are disposed on the support platform (2) and the support rods (3) are provided with grooves (31). The fixing blocks (4) are disposed in the grooves (31) on the support rods (3) and can slide in the grooves (31) so that all the fixing blocks (4) can be close to or away from the center of the support platform (2).

2. The cylindrical section welding positioning structure according to claim 1, characterized in that: It also includes extension rods (5), the number of which is the same as the number of fixing blocks (4), and the extension rods (5) fit the shape of the groove (31). The extension rods (5) are disposed in the groove (31), and the fixing blocks (4) are connected to the end of the extension rods (5) away from the center of the bearing platform (2).

3. The cylindrical section welding positioning structure according to claim 2, characterized in that: Bolt holes (32) are provided on both sides of the groove (31) for fastening the extension rod (5), and the top of the corresponding bolt is not higher than the support surface of the bearing rod (3) after it is screwed in and fixed.

4. The cylindrical section welding positioning structure according to claim 1, characterized in that: The support rods (3) are set to four, the support platform (2) is set to be circular, and the support rods (3) are set in directions that are perpendicular to each other and perpendicular to the tangent of the support platform (2).

5. The cylindrical section welding positioning structure according to claim 1, characterized in that: The fixing block (4) has an internal thread that runs through it, and the cylinder section is fixed by a tightening bolt that matches the internal thread.

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