Auxiliary device for welding flange and nozzle

Abstract

This utility model discloses an auxiliary device for welding flanges and nozzles, including a support platform, a flange rotating assembly, and a nozzle rolling assembly. The flange rotating assembly is disposed above the support platform and includes two parallel rotating shafts with an adjustable distance between them. These shafts support the flange and are linked to it. The length direction of the rotating shafts is the same as the central axis direction of the flange. The nozzle rolling assembly is disposed on the side of the support platform and includes two rollers spaced apart with an adjustable distance between them. These rollers support the nozzle and are linked to it. The central axis direction of the rollers is the same as the central axis direction of the nozzle, ensuring that the central axis of the nozzle coincides with the central axis of the flange. This auxiliary device is applicable to welding nozzles and flanges of various specifications.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for welding flanges and pipes, and more particularly to an auxiliary device for welding flanges and pipes of general pressure vessels. Background Technology

[0002] Pressure vessels are among the most widely used equipment in industries such as petrochemicals, power generation, and light industry. Due to process requirements, the need for installation and maintenance of internal components, and ease of manufacturing and transportation, pressure vessels often require a detachable structure. Flanges are an important connecting component.

[0003] Currently, in the existing technology in the industry, the circumferential welding of flanges and nozzles of pressure vessels is usually done manually or with simple supports, which has the following drawbacks: the flanges and nozzles of pressure vessels have a wide variety of specifications and large differences in size, and the welding process requires frequent adjustment of the mating angle and position of the flanges and nozzles. In addition, some large-specification flanges and nozzles are heavy and require the use of cranes for adjustment, which is labor-intensive; there is a lack of rotating structure, and the accessibility of welding some angles is low when welding circumferential seams, resulting in poor circumferential seam welding quality. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an auxiliary device for welding flanges and pipes. This auxiliary device can meet the requirements of circumferential welding of various specifications of pipes and flanges, has a wide range of applications, is relatively simple to use, and can reduce labor intensity.

[0005] The present invention achieves the above objectives by adopting the following technical solution.

[0006] This utility model provides an auxiliary device for welding flanges and pipes, including a support platform, a rotating assembly for flanges, and a rolling assembly for pipes;

[0007] The flange is mounted on the support platform with a rotating assembly. The assembly includes two rotating shafts that are parallel to each other and whose distance is adjustable. The shafts support the flange and are designed to move in conjunction with the flange. The length direction of the rotating shafts is the same as the direction of the central axis of the flange.

[0008] The connecting pipe using a rolling assembly is mounted on the side of the support platform. It includes two rollers spaced apart, with the distance between them adjustable. These rollers support the connecting pipe and are designed to move in conjunction with it. The central axis of the rollers is aligned with the central axis of the connecting pipe, ensuring that the central axis of the connecting pipe coincides with the central axis of the flange. This design facilitates operation and is suitable for circumferential welding of various sizes of connecting pipes and flanges.

[0009] In this invention, when in use, the flange is placed on two rotating shafts so that the direction of the flange's central axis is the same as the length direction of the rotating shafts. The connecting pipe is placed on two rollers so that the direction of the connecting pipe's central axis is the same as the direction of the rollers' central axis, and the central axis of the connecting pipe coincides with the central axis of the flange, which is beneficial for circumferential welding between the flange and the connecting pipe.

[0010] The auxiliary device for welding flanges and pipes according to this utility model is preferably:

[0011] The two rotating shafts are the first rotating shaft and the second rotating shaft, respectively;

[0012] The flange rotating assembly also includes multiple bearings and multiple bearing housings, with the bearings and bearing housings being matched; the multiple bearing housings are respectively a first bearing housing, a second bearing housing, a third bearing housing, and a fourth bearing housing; the first bearing housing and the second bearing housing are respectively located at both ends of the first rotating shaft and are detachably mounted on the support platform;

[0013] The third and fourth bearing seats are located at both ends of the second rotating shaft and are detachably mounted on the support platform. This facilitates the free rotation of the rotating shaft.

[0014] In this invention, the multiple bearings are designated as a first bearing, a second bearing, a third bearing, and a fourth bearing. The first bearing is matched with a first bearing housing, and so on.

[0015] The bearing housing is detachably mounted on the support platform, which facilitates lateral adjustment (i.e., adjustment along the length direction perpendicular to the shaft) of the distance between the bearing housings, thereby adjusting the distance between the bearings and, consequently, the distance between the two shafts, to accommodate flanges of different specifications.

[0016] The auxiliary device for welding flanges and pipes according to this utility model is preferably:

[0017] The top of the support platform is provided with multiple elongated holes, the length direction of which is perpendicular to the length direction of the rotating shaft and is horizontal.

[0018] It also includes multiple first lateral adjustment components for adjusting the distance between the two rotating shafts and for fixing the bearing housing; each first lateral adjustment component includes a first bolt, which is configured to pass through the top elongated hole and connect to the bearing housing. This invention, through the combined use of the first lateral adjustment components and the top elongated hole, facilitates the lateral adjustment of the bearing housing, thereby enabling the adjustment of the horizontal distance between the two rotating shafts to accommodate flanges of different specifications.

[0019] In this invention, there can be four elongated holes at the top, two of which correspond to two of the bearing seats, and the other two correspond to the other two bearing seats.

[0020] According to the auxiliary device for welding flanges and pipes described in this utility model, preferably, the first lateral adjustment assembly further includes a first nut and a first pad. The first nut matches the first bolt and is used to tighten the first bolt. The first pad is configured to be sleeved on the first bolt and located at the bottom of the bearing seat. The first pad is used to adjust the height of the bearing seat, thereby adjusting the distance between the rotating shaft and the support platform to avoid contact between the rotating shaft and the support platform.

[0021] According to the auxiliary device for welding flanges and pipes described in this utility model, preferably, the rolling assembly for the pipe further includes two sets of roller supports. Each set of roller supports includes a first support portion and a second support portion. The second support portion is located above the first support portion. The first support portion is configured as a cuboid frame structure, and the second support portion is configured as a trapezoidal platform-like structure with an upper opening. The rollers are disposed on the second support portion. The central axis of the rollers is in the same direction as the central axis of the rotating shaft. This allows the rollers to be fixed to the side of the support platform, which is beneficial for welding the pipe and flange.

[0022] The second support and the first support can be fixedly connected by bolts and nuts, preferably by a second lateral adjustment assembly.

[0023] In some embodiments, the first support portion consists of two separate components. In other embodiments, the first support portions are connected together to form a single, integral structure.

[0024] According to the auxiliary device for welding flanges and pipes described in this utility model, preferably, at least one side of the support platform is provided with a plurality of elongated side holes, and the length direction of the elongated side holes is the same as the height direction of the support platform.

[0025] It also includes multiple height adjustment components for adjusting the height of the roller support and for fixing the roller support; the height adjustment components include a second bolt and a second nut;

[0026] The second bolt is configured to pass sequentially through one side of the first support and the elongated hole on the side, allowing the first support to be detachably mounted on the side of the support platform; the second nut matches the second bolt and is used to tighten the second bolt. This facilitates the use of the elongated hole on the side with a height adjustment assembly to adjust the height of the roller support, thereby adjusting the height of the roller so that the central axis of the pipe coincides with the central axis of the flange.

[0027] According to the auxiliary device for welding flanges and pipes described in this utility model, preferably...

[0028] The first support portion is provided with a long cylindrical hole;

[0029] It also includes multiple second lateral adjustment components for adjusting the horizontal distance between the two rollers and for fixing the second support to the first support;

[0030] Each of the second lateral adjustment components includes a fourth bolt and a fourth nut. The fourth bolt is configured to pass through the second support portion and the elongated hole of the support portion in sequence, so that the second support portion is detachably mounted on the first support portion. The fourth nut matches the fourth bolt and is used to fasten the fourth bolt.

[0031] According to the auxiliary device for welding flanges and pipes described in this utility model, preferably, the support platform is configured as two groove-shaped bodies with their groove openings facing each other and the groove openings being in the same direction as the length of the rotating shaft; the top walls of the two groove-shaped bodies are located on the same horizontal plane; the bearing seat is disposed on the top wall of the groove-shaped body. This helps to save materials and reduce costs.

[0032] The auxiliary device for flange and pipe welding according to this utility model preferably further includes a base, which is a flat plate structure; the support platform is disposed on the base. This is beneficial to the stability of the auxiliary device structure.

[0033] The auxiliary device for welding flanges and pipes according to this utility model preferably further includes anchor bolts for fixing the support platform to the ground. This is beneficial to the stability of the auxiliary device structure.

[0034] In this invention, the support platform can be directly fixed to a horizontal surface, or it can be fixed to a base placed on a horizontal surface.

[0035] The auxiliary device for flange and pipe welding of this utility model can meet the requirements of circumferential welding of various specifications of pipes and flanges. It has a wide range of applications, is relatively simple to use, can reduce labor intensity, and can improve the efficiency and quality of circumferential welding. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an auxiliary device for welding flanges and pipes according to the present invention.

[0037] Figure 2 yes Figure 1 A diagram showing the view from the right.

[0038] Figure 3 This is a schematic diagram of the structure of the elongated hole at the top of the support platform.

[0039] The annotations in the attached figures are explained as follows:

[0040] 10-Support platform, 12-Top oblong hole, 13-Side oblong hole;

[0041] 20 - Rotating assembly for flange; 21 - Shaft; 22 - Bearing;

[0042] 30 - Rolling assembly for pipe connection; 31 - Roller; 321 - First support part; 322 - Second support part;

[0043] 40 - First lateral adjustment assembly; 41 - First bolt; 42 - First nut;

[0044] 50 - Height adjustment component; 60 - Second lateral adjustment component. Detailed Implementation

[0045] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0046] Example 1

[0047] Figure 1 This is a schematic diagram of the structure of an auxiliary device for welding flanges and pipes according to the present invention. Figure 2 yes Figure 1 A diagram showing the view from the right. Figure 3 This is a schematic diagram of the structure of the elongated hole at the top of the support platform.

[0048] like Figures 1 to 3 As shown, the auxiliary device for flange and pipe welding of this utility model includes a support platform 10, a flange rotating assembly 20, a pipe rolling assembly 30, a first lateral adjustment assembly 40, a height adjustment assembly 50, a second lateral adjustment assembly 60, and a base (not shown).

[0049] like Figure 1 As shown, the support platform 10 is formed by two opposing channel-shaped bodies. The openings of these two channel-shaped bodies face each other (i.e., the bottoms of the two channel-shaped bodies are far apart), and the top walls of these two channel-shaped bodies are located on the same horizontal plane. In this embodiment, the channel-shaped bodies can be channel steel.

[0050] like Figure 3 , Figure 1As shown, the top of the support platform 10 is provided with a plurality of elongated holes 12. The length direction of the elongated holes 12 is perpendicular to the length direction of the support platform 10 and extends horizontally (i.e., perpendicular to the length direction of the rotating shaft 21). For example, there are four elongated holes 12, two of which are located on the top (i.e., on the top wall) of one of the groove-shaped bodies, and the other two are located on the top (i.e., on the top wall) of another groove-shaped body.

[0051] like Figure 2 As shown, at least one side of the support platform 10 is provided with a plurality of elongated oval holes 13, the length direction of which is the same as the height direction of the support platform 10. There can be two or more elongated oval holes 13, for example, two to four, which are evenly distributed. For example, when two elongated oval holes 13 are provided, they are parallel to each other.

[0052] A flange rotation assembly 20 is positioned above the support platform 10. The flange rotation assembly 20 includes two rotating shafts 21, multiple bearings 22, and multiple bearing seats. The two rotating shafts 21 are parallel to each other, and the distance between them is adjustable. These two rotating shafts 21 support the flange (i.e., the flange contacts each of the two rotating shafts 21) and are linked to the flange (e.g., when the flange is manually rotated, the rotating shafts 21 rotate accordingly). The length direction of the rotating shafts 21 is the same as the direction of the flange's central axis. The length direction of the rotating shafts 21 is the same as the length direction of the support platform 10.

[0053] The two rotating shafts 21 are the first rotating shaft and the second rotating shaft, respectively, and they are parallel to each other.

[0054] Bearing 22 is matched with bearing housing, and the two are integrally formed. Multiple bearing housings are designated as a first bearing housing, a second bearing housing, a third bearing housing, and a fourth bearing housing. Multiple bearings 22 are designated as a first bearing, a second bearing, a third bearing, and a fourth bearing. The first bearing is matched with the first bearing housing, the second bearing is matched with the second bearing housing, the third bearing is matched with the third bearing housing, and the fourth bearing is matched with the fourth bearing housing. The first and second bearing housings are located at both ends of the first rotating shaft and are detachably mounted on the support platform 10, specifically, detachably mounted on the top walls of the two groove-shaped bodies. The third and fourth bearing housings are located at both ends of the second rotating shaft and are detachably mounted on the support platform 10, specifically, detachably mounted on the top walls of the two groove-shaped bodies.

[0055] Multiple first lateral adjustment components 40 are used to adjust the distance between the two rotating shafts 21 and to fix the bearing housing. Specifically, as shown... Figure 2As shown, the first lateral adjustment assembly 40 includes a first bolt 41, a first nut 42, and a first pad (not shown). The first bolt 41 passes through the top elongated hole 12 and is connected to the bearing housing, thereby fixing the bearing housing. The bearing housing is detachably mounted on the support platform 10 via the first lateral adjustment assembly 40, thereby allowing adjustment of the distance between the two rotating shafts 21. That is, by moving the first lateral adjustment assembly 40 laterally along the length direction of the top elongated hole 12, the distance between the two bearing housings can be adjusted, thereby adjusting the distance between the two rotating shafts 21 to accommodate the support of flanges of different specifications.

[0056] The first nut 42 is matched with the first bolt 41 for fastening the first bolt 41. The first shim is fitted onto the first bolt 42 and is located at the bottom of the bearing housing. The first shim can be used to adjust the height of the bearing housing, thereby adjusting the distance between the rotating shaft 21 and the support platform 10 to avoid contact between the rotating shaft 21 and the support platform 10.

[0057] like Figure 1 and Figure 2 As shown, a rolling assembly 30 for the connecting pipe is disposed on at least one side of the support platform 10. The rolling assembly 30 includes two rollers 31 and two sets of roller supports. The two rollers 31 are spaced apart, and the horizontal distance between them is adjustable. The two rollers 31 are used to support the connecting pipe (i.e., the connecting pipe contacts the two rollers 31 respectively) and are linked with the connecting pipe (e.g., when the connecting pipe is manually rotated, the rollers 31 rotate accordingly). The central axis direction of the rollers 31 is the same as the central axis direction of the connecting pipe, so that the central axis of the connecting pipe coincides with the central axis of the flange, thereby facilitating the welding of the flange and the connecting pipe.

[0058] Each set of roller supports includes a first support portion 321 and a second support portion 322, with the second support portion 322 located above the first support portion 321. The first support portion 321 has a cuboid frame structure, and a long oval hole is provided at the top of the first support portion 321. The length direction of the long oval hole is the same as the length direction of the top long oval hole 12. The second support portion 322 is a trapezoidal structure with an opening at the top. Rollers 31 are mounted on the second support portion 322. The central axis of the roller 31 is in the same direction as the central axis of the rotating shaft 21. The specific installation method of the roller 31 can refer to those known methods, and this utility model does not impose any particular limitation. The second support portion 322 and the first support portion 321 are fixedly connected by a second lateral adjustment assembly 60. The second lateral adjustment assembly 60 is also used to adjust the distance between the two rollers 31. Specifically, the second lateral adjustment assembly 60 includes a fourth bolt and a fourth nut. The fourth bolt and the fourth nut are matched. The fourth bolt passes through the bottom of the second support and the long hole of the support in sequence and is connected to the fourth nut, thereby fixing the second support 322 to the first support 321 and allowing the second support 322 to move along the length of the long hole of the support, thereby adjusting the distance between the two rollers 31.

[0059] Multiple height adjustment components 50 are used to adjust the height of the roller support and to secure the roller support. Each height adjustment component 50 includes a second bolt and a second nut.

[0060] One side of the first support portion 321 of the roller support is through which a second bolt passes. The second bolt also passes through the elongated hole 13 on the side, so that the first support portion is detachably mounted on the side of the support platform 10 (i.e., mounted on the bottom of the groove body), thereby allowing adjustment of the height of the roller support and, consequently, the height of the roller 31. A second nut matches the second bolt for tightening the second bolt.

[0061] The base is a flat plate structure, placed horizontally on the ground. A support platform 10 is mounted on the base. Specifically, the bottom of the support platform 10 is fixed to the base by a third bolt.

[0062] Example 2

[0063] The difference between this embodiment and Embodiment 1 is that there is no base. In this embodiment, the auxiliary device also includes anchor bolts for fixing the bottom of the support platform 10 to the ground. Other structures are the same as in Embodiment 1.

[0064] Example 3

[0065] The difference between this embodiment and Embodiment 1 is that the first support portion 321 in the two sets of roller supports is connected together or is a one-piece molded structure. Other structures are the same as in Embodiment 1.

[0066] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. An auxiliary device for welding a flange to a nozzle, characterized by, Includes support platforms, rotating assemblies for flanges, and rolling assemblies for pipe connections; The flange is mounted on the support platform with a rotating assembly. The assembly includes two rotating shafts that are parallel to each other and whose distance is adjustable. The shafts support the flange and are designed to move in conjunction with the flange. The length direction of the rotating shafts is the same as the direction of the central axis of the flange. The rolling assembly for the connector is disposed on the side of the support platform and includes two rollers. The two rollers are spaced apart and the distance between them is adjustable. They are used to support the connector and are configured to be linked with the connector. The central axis of the rollers is in the same direction as the central axis of the connector, and the central axis of the connector coincides with the central axis of the flange.

2. The auxiliary device according to claim 1, characterized in that: The two rotating shafts are the first rotating shaft and the second rotating shaft, respectively; The flange rotating assembly also includes multiple bearings and multiple bearing housings, with the bearings and bearing housings being matched; the multiple bearing housings are respectively a first bearing housing, a second bearing housing, a third bearing housing, and a fourth bearing housing; the first bearing housing and the second bearing housing are respectively located at both ends of the first rotating shaft and are detachably mounted on the support platform; The third bearing housing and the fourth bearing housing are located at both ends of the second rotating shaft and are detachably mounted on the support platform.

3. The auxiliary device according to claim 2, characterized in that: The top of the support platform is provided with multiple elongated holes, the length direction of which is perpendicular to the length direction of the rotating shaft and is horizontal. It also includes multiple first lateral adjustment components for adjusting the distance between the two rotating shafts and for fixing the bearing housing; each of the first lateral adjustment components includes a first bolt, which is configured to pass through the top elongated hole and be connected to the bearing housing.

4. The supplemental device of claim 3, wherein, The first lateral adjustment assembly further includes a first nut and a first washer. The first nut is matched with the first bolt for fastening the first bolt. The first washer is configured to be sleeved on the first bolt and located at the bottom of the bearing housing.

5. The supplemental device of claim 1, wherein, The rolling assembly for the pipe fitting also includes two sets of roller supports. Each set of roller supports includes a first support part and a second support part. The second support part is located above the first support part. The first support part is configured as a cuboid frame structure, and the second support part is configured as a trapezoidal truss structure with an opening at the top. The roller is mounted on the second support part. The central axis of the roller is in the same direction as the central axis of the rotating shaft.

6. The auxiliary device according to claim 5, characterized in that: At least one side of the support platform is provided with a plurality of elongated oval holes, the length direction of which is the same as the height direction of the support platform. It also includes multiple height adjustment components for adjusting the height of the roller support and for fixing the roller support; the height adjustment components include a second bolt and a second nut; The second bolt is configured to pass sequentially through one side of the first support and the elongated hole on the side, so that the first support is detachably mounted on the side of the support platform; The second nut is matched with the second bolt for tightening the second bolt.

7. The auxiliary device according to claim 5, characterized in that: The top of the first support portion is provided with a long cylindrical hole; It also includes multiple second lateral adjustment components for adjusting the horizontal distance between the two rollers and for fixing the second support to the first support; Each of the second lateral adjustment components includes a fourth bolt and a fourth nut. The fourth bolt is configured to pass through the second support portion and the elongated hole of the support portion in sequence, so that the second support portion is detachably mounted on the first support portion. The fourth nut matches the fourth bolt and is used to fasten the fourth bolt.

8. The supplemental device of claim 2, wherein, The support platform is configured as two groove-shaped bodies with their groove openings facing each other and the groove openings being in the same direction as the length of the rotating shaft; the top walls of the two groove-shaped bodies are located on the same horizontal plane; the bearing seat is disposed on the top wall of the groove-shaped bodies.

9. The supplemental device of claim 8, wherein, It also includes a base, which is a flat plate structure; the support platform is disposed on the base.

10. The supplemental device of claim 8, wherein, It also includes anchor bolts for fixing the support platform to the ground.

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