CN213857910U - Be applicable to outer net barrel ring longitudinal weld group of PDH device and organize welding frock - Google Patents

Abstract

The utility model relates to a be applicable to PDH device outer screen barrel ring longitudinal weld group to welding frock, a plurality of lock ring subassemblies of fixedly connected with on the main shaft of this welding frock, a plurality of lock ring subassembly periphery circles and loops through the main connecting rod and connect, and the both ends of the main shaft of welding frock are fixed on the axle support subassembly. The utility model has reasonable structure, simple use, easy disassembly, stability, durability and high precision, and is suitable for the welding tool for the circumferential and longitudinal weld assembly of the cylinder body of the external net of the PDH device; the problems of assembly, campus, deformation control and the like during welding of the large PHD outer net barrel can be effectively solved.

Description

Be applicable to outer net barrel ring longitudinal weld group of PDH device and organize welding frock

Technical Field

The utility model mainly relates to a special welding frock especially relates to and is applicable to the welding frock of outer net barrel ring longitudinal weld group of PDH device petrochemical industry reactor internal member, belongs to welding frock.

Background

The large-scale petroleum refining project is increasing rapidly, and the requirement on the quality precision of components in a large-scale PDH device is higher and higher. In order to ensure that the product volume of an inner component of a PDH device is larger, the diameter is about 6 meters, the length is about 20 meters, a large inner component net barrel body needs to be subjected to tailor-welding, most of the conventional welding adopts a simple tool for manual welding, the welding efficiency is low, and the quality precision is difficult to guarantee. In order to improve the welding quality and efficiency, automatic welding and mechanical arm laser deep melting welding are being explored in the prior art, but group pairing and circle calibration during welding of a large-sized cylinder and deformation control during welding are difficult, and meanwhile, the welding operation visual angle range of a welding mechanical arm is small, so that production difficulty exists in all-dimensional welding of a large-sized cylinder ring longitudinal seam, no appropriate special tool is provided for ensuring the welding quality, and meanwhile, the production efficiency is severely restricted.

Disclosure of Invention

Utility model purpose:

the utility model provides a be applicable to PDH device outer screen barrel ring longitudinal weld group to welding frock, the deformation of large-scale barrel can not be controlled to the present frock of its purpose solution, can not be when the welding group to, school circle, lead to welding quality and the problem of inefficiency.

The technical scheme is as follows:

the utility model provides a be applicable to PDH device outer screen barrel ring longitudinal weld group to welding frock, a plurality of lock ring subassemblies of fixedly connected with on this welding frock's the main shaft, a plurality of lock ring subassembly periphery circles and loops through the main connecting rod and connect, and the both ends of the main shaft of welding frock are fixed on the axle support subassembly.

The supporting ring assembly consists of a supporting ring outer ring, a supporting ring inner ring and a supporting ring strut, and the supporting ring inner ring and the supporting ring outer ring are fixedly connected through the supporting ring strut at equal radian;

the outer ring of the support ring comprises a left outer ring of the support ring and a right outer ring of the support ring, the left outer ring of the support ring and the right outer ring of the support ring are clamped, rod penetrating holes with equal arc distances are formed in the arc edges of the left outer ring of the support ring and the right outer ring of the support ring, and the main connecting rod sequentially penetrates through the rod penetrating holes to be connected with a plurality of support ring components;

the inner support ring comprises a left support ring inner ring and a right support ring inner ring, the left support ring inner ring and the right support ring inner ring are of the same symmetrical circular arc section structure, and the left support ring inner ring is in butt joint with the right support ring inner ring.

The left outer ring of the support ring and the right outer ring of the support ring are of staggered circular arc section structures.

The both ends of the outer ring arc section on the left side of the support ring are respectively provided with a convex buckle, the both ends of the outer ring arc section on the right side of the support ring are respectively provided with a concave buckle, and the convex buckle and the concave buckle on the corresponding ends are clamped.

The shaft support assembly comprises a shaft support rod, a bottom plate and a first roller body, wherein the shaft support rod is fixed on the bottom plate, the shaft support rod is fixedly connected with the first roller body through a front support supporting plate and a rear support supporting plate, and a main shaft is connected in the first roller body; the first roller body comprises a first upper roller and a first lower roller, the first upper roller and the first lower roller are of the same structure, a semi-circular roller body with balls is embedded in the first upper roller, and the first upper roller is fixedly connected with the first lower roller.

The shaft bracket assembly is also provided with a left main stay bar of a diagonal brace, a right main stay bar of the diagonal brace, a left auxiliary stay bar of the diagonal brace and a right auxiliary stay bar of the diagonal brace; one end of each of the left main stay bar of the diagonal brace, the right main stay bar of the diagonal brace, the left auxiliary stay bar of the diagonal brace and the right auxiliary stay bar of the diagonal brace is connected with the stay bar of the connecting shaft, and the other end of each of the left main stay bar, the right main stay bar of the diagonal brace and the right auxiliary stay bar of the diagonal brace is connected with the bottom plate; the left main stay bar of the diagonal brace and the right main stay bar of the diagonal brace are arranged on two sides of the shaft support rod by taking the shaft support rod as axial symmetry, and the left auxiliary stay bar of the diagonal brace and the right auxiliary stay bar of the diagonal brace are arranged on two sides of the shaft support rod by taking the shaft support rod as axial symmetry.

The shaft supporting rod is composed of a plurality of sections of H-shaped steel materials which sequentially pass through a shaft bracket connecting plate.

The main shaft is fixedly connected with a plurality of support ring assemblies through a connecting assembly, the connecting assembly comprises a support ring shaft sleeve connecting ring and a second roller body, the support ring shaft sleeve connecting ring is annularly welded at the central ring part of the second roller body, and the support ring shaft sleeve connecting ring is fixedly connected with the support ring inner ring of the support ring assembly; the second roller body comprises a second upper roller and a second lower roller, the second upper roller and the second lower roller are of the same structure, a semicircular roller body with balls is embedded in the second upper roller, and the second upper roller is fixedly connected with the second lower roller.

The first upper roller and the second upper roller, the first lower roller and the second lower roller are all of structures of L-shaped grooves which are formed by turning semi-cylindrical stainless steel bodies along two inner arc edges, the edges of the L-shaped grooves are provided with blocking ridges, and balls are just placed in the L-shaped grooves.

The front and the back of the first roller body and the second roller body are respectively provided with a limiter, each limiter consists of an upper limit and a lower limit which have the same structure, the upper limit and the lower limit are fixedly connected, and the radius of an inner circle formed by the upper limit and the lower limit is the same as the radius of an outer circle of the main shaft in size.

The advantages and effects are as follows:

the utility model provides a longitudinal girth weld assembly welding tool for an external mesh cylinder of a PDH device, which aims to develop a longitudinal girth weld assembly welding tool for an external mesh cylinder of a PDH device, which has reasonable structure, simple and convenient use, easy disassembly, stability, durability and high precision; the problems of assembly, campus, deformation control and the like during welding of the large PHD outer net barrel can be effectively solved, the visual angle range of manipulator welding operation during automatic laser welding is small, the production process that the net piece assemblies are welded into an integral piece is simplified, all-dimensional welding of the longitudinal joint of the large PDH outer net barrel ring is realized, the welding production efficiency of the net barrel is greatly improved while the welding quality is ensured, and the enterprise and social and economic efficiency are further improved.

Drawings

FIG. 1 is a front view of the assembly welding tool of the present invention;

FIG. 2 is a side view of the assembly welding tool of the present invention;

FIG. 3 is a partial enlarged view of the assembly welding tooling I of the utility model;

FIG. 4 is a partial enlarged view of the assembly welding tooling II of the present invention;

FIG. 5 is a partial enlarged view of the assembly welding tooling III of the present invention;

FIG. 6 is a schematic view of the assembly welding tool support ring assembly of the present invention;

FIG. 7 is a schematic view of the assembly welding tooling shaft support assembly of the present invention;

FIG. 8 is a side view of the assembly welding tooling shaft support assembly of the present invention;

FIG. 9 is a schematic view of the assembly welding tooling shaft bracket assembly A-A, B-B of the present invention;

fig. 10 is a schematic view of the assembly welding tool connection assembly of the present invention;

fig. 11 is a sectional view of the assembly welding tool connecting assembly of the present invention;

fig. 12 is a schematic diagram of the assembly welding tool limiter of the present invention;

reference numerals: 1 support ring component, 1-1 support ring left outer ring, 1-2 support ring right outer ring, 1-3 support ring left inner ring, 1-4 support ring right inner ring, 1-5 support ring support rod, 1-6 convex buckle, 1-7 concave buckle, 1-8 through rod hole, 1-9 equal radian bolt hole, 2-shaft bracket component, 2-1 diagonal brace left main support rod, 2-2 diagonal brace right main support rod, 2-3 diagonal brace left auxiliary support rod, 2-4 diagonal brace right auxiliary support rod, 2-5 shaft support rod, 2-6 bottom plate, 2-7 support supporting plate, 2-8 first upper roller, 2-9 first lower roller, 2-10 roller connecting plate, 2-11 diagonal brace auxiliary support rod connecting plate, 2-12 shaft support connecting plates, 2-13 first bolt holes, 2-14 connecting blocks, 2-15 backing plates, 2-16 walking wheel connecting plates, 2-17 first roller bolt holes, 2-18 roller connecting plate bolt holes, 2-19 balls, 2-20 walking wheels, 2-21L-shaped grooves, 2-22 first roller bodies, 3 connecting assemblies, 3-1 support ring shaft sleeve connecting rings, 3-2 second upper rollers, 3-3 second lower rollers, 3-4 second roller bolt holes, 3-5 blocking ridges, 3-6 second roller bodies, 4 main shafts, 5 main connecting rods, 6 limiters, 6-1 upper limits, 6-2 lower limits, 6-3 internal nuts and 6-4 external nuts.

Detailed Description

The invention will be further explained with reference to the drawings:

as shown in fig. 1-2, the utility model provides a be applicable to PDH device outer net barrel ring longitudinal weld group to welding frock: the welding tool comprises a support ring assembly 1, a shaft bracket assembly 2, a connecting assembly 3, a main shaft 4 and a main connecting rod 5. Fixedly connected with a plurality of lock ring subassemblies 1 on this welding frock's main shaft 4, a plurality of lock ring subassemblies 1 make the net section of thick bamboo axiality after the group, cylindricity more accurate, and a plurality of lock ring subassemblies 1 periphery circle loops through main connecting rod 5 and connects, and the both ends of welding frock's main shaft 4 are fixed on shaft bracket subassembly 2. In this embodiment, a shaft bracket assembly 2 is respectively arranged at the front end and the rear end of the welding tool main shaft 4 and penetrates through seven support ring assemblies 1. Twelve main connecting rods 5 penetrate through the rod penetrating holes 1-8 on the seven support ring assemblies 1. The number of each component can be adjusted as desired.

As shown in fig. 6, the support ring assembly 1 is composed of a support ring outer ring, a support ring inner ring and support ring struts 1-5, wherein the support ring inner ring and the support ring outer ring are fixedly connected through eight support ring struts 1-5 with equal radian; because the device is applied to large-scale equipment, the support ring supporting rods 1-5 can enhance the support strength of the support ring component 1.

The outer ring of the support ring comprises a left outer ring 1-1 of the support ring and a right outer ring 1-2 of the support ring, the left outer ring 1-1 of the support ring and the right outer ring 1-2 of the support ring are of staggered arc section structures, and rod penetrating holes 1-8 with equal arc distances are arranged on the arc edges. Convex buckles 1-6 are respectively arranged at two ends of the arc section of the left outer ring 1-1 of the support ring, concave buckles 1-7 are respectively arranged at two ends of the arc section of the right outer ring 1-2 of the support ring, and the convex buckles 1-6 and the concave buckles 1-7 at the adjacent ends are clamped to form an outer ring structure of the integral support ring. The inner ring of the support ring comprises a left inner ring 1-3 and a right inner ring 1-4 of the support ring, the left inner ring 1-3 and the right inner ring 1-4 of the support ring are of the same symmetrical arc segment structure, and bolt holes 1-9 with equal radian are arranged on the symmetrical arc segment structure.

As shown in fig. 3-4 and 7-8, the first upper roller 2-8 and the first lower roller 2-9 of the shaft bracket assembly 2 are semi-circular roller bodies embedded with balls 2-19 and have the same structure. Roller connecting plates 2-10 are welded on the outer sides of two end parts of the first upper rollers 2-8 and the first lower rollers 2-9, roller connecting plate bolt holes 2-18 are formed in the roller connecting plates 2-10, and the first upper rollers 2-8 and the first lower rollers 2-9 are combined into a roller body through bolt groups. The first lower rollers 2-9 are supported by the front and rear two support plates 2-7 and the shaft support rods 2-5. The shaft supporting rod 2-5 is made of H-shaped steel, the two supporting plates 2-7 are welded on the H-shaped outer surface of the shaft supporting rod, the width of the supporting plates 2-7 is larger than that of the shaft supporting rod 2-5, and the device is larger, so that the force borne by the main shaft 4 is increased by the supporting plates 2-7, the stressed area is enlarged, and then the force is transferred onto the shaft supporting rod 2-5. The four diagonal brace auxiliary support rod connecting plates 2-11 are parallel in pairs, welded on the H-shaped inner surface of the shaft support rod, and the upper end surfaces of the four diagonal brace auxiliary support rod connecting plates are flush with the lower end surfaces of the support supporting plates 2-7. The outer end parts of the diagonal brace auxiliary support rod connecting plates 2-11 are provided with first bolt holes 2-13 which are the same as the bolt holes at the upper end parts of the two diagonal brace left auxiliary support rods 2-3 and the two diagonal brace right auxiliary support rods 2-4, the upper ends of the four diagonal brace auxiliary support rods can be fixed through bolt groups, and the lower ends with the bolt holes are fixed on the connecting blocks 2-14 of the bottom plates 2-6 through the bolt groups. The upper ends of the left main support rod 2-1 and the right main support rod 2-2 of the diagonal draw bars are welded on the H-shaped inner surface of the shaft support rod 2-5, and the lower ends are welded at the middle positions of the left square steel and the right square steel of the bottom plate 2-6. As shown in FIG. 9, the bottom plate 2-6 is made by welding six square steels in a Chinese character 'tian' shape, a backing plate 2-15 is welded at the middle position of the upper part, and the bottom of the shaft support rod 2-5 is welded on the backing plate 2-15. Four corners at the bottom of the bottom plate 2-6 are welded with road wheel connecting plates 2-16, and road wheels 2-20 are arranged below the road wheel connecting plates 2-16.

The shaft support rod 2-5 is composed of three sections of H-shaped steel and four shaft support connecting plates 2-12. Two contact surfaces, namely four end surfaces, in the vertical direction of the three sections of H-shaped steel materials are respectively welded with a shaft bracket connecting plate 2-12. Bolt holes with the same size are formed in the edge parts of the four shaft support connecting plates, and three sections of H-shaped steel materials are connected and fixed through bolt groups to form shaft supporting rods 2-5. The height of the shaft support rod 2-5 can be adjusted according to the requirement.

As shown in fig. 5, 10 and 11, the connection assembly 3 includes a support ring sleeve connection ring 3-1 and a second roller body 3-6, the support ring sleeve connection ring 3-1 is welded around the outer circumference of the center ring of the second roller body 3-6, and the support ring sleeve connection ring 3-1 is fixedly connected with the support ring inner ring of the support ring assembly 1 through a second roller bolt hole 3-4.

The second roller body 3-6 of the connecting assembly 3 comprises a second upper roller 3-2 and a second lower roller 3-3 which are the same in structure as the first upper roller 2-8 and the first lower roller 2-9 in the shaft bracket assembly 2 and are about half as thick. The support ring shaft sleeve connecting ring 3-1 can be annularly welded at a central ring part consisting of the second upper roller 3-2 and the second lower roller 3-3, is provided with second bolt holes 3-4 with equal radian and the same size as the bolt holes 1-9 with equal radian of the support ring component 1, and can be fixedly connected with the support ring component through bolt groups with the same shape and number.

As shown in fig. 8 and 11, the first upper roller 2-8, the second upper roller 3-2, the first lower roller 2-9 and the second lower roller 3-3 are formed by turning an L-shaped groove 2-21 along two inner arc edges of a semi-cylindrical stainless steel body, a blocking ridge 3-5 is arranged on the inner edge of the L-shaped groove, the ball 2-19 is just placed in the L-shaped groove 2-21, and the ball 2-19 can roll in the L-shaped groove and cannot fall out.

As shown in fig. 4-5 and 12, the first roller body 2-22 and the second roller body 3-6 of the welding tool are provided with a stopper 6 at the front and the back, the stopper 6 arranged at the front and the back of the second roller body 3-6 is used for locking the support ring assembly 1, and the stopper 6 arranged at the front and the back of the first roller body 2-22 is used for locking the shaft bracket assembly 2. The limiter 6 consists of an upper limit 6-1 and a lower limit 6-2 which have the same structure, and the inner circle radius of the limiter is the same as the outer circle radius of the main shaft 4. The upper limit 6-1 and the lower limit 6-2 are formed by welding nuts 6-4 at 45 degrees and 135 degrees between two overlapped semicircular stainless steel sheets respectively. The outer circles of the two end parts of the upper limit 6-2 and the lower limit 6-3 are respectively welded with a nut 6-4 for combining the limit device.

The utility model discloses rational in infrastructure, the machine-building of being convenient for, the equipment of being convenient for, dismantlement, low in production cost.

The utility model discloses cooperation group is to frock, with the segmentation net piece that the preorder was made fix this welding frock with special frock clamp, in the process of fastening, if net piece and frock's lock ring excircle gapped, adjust net piece radian (to the welded fastening and the deformation control of the cylinder that will weld), make the net section of thick bamboo axiality after the group is more accurate, realized the high-efficient, comparatively accurate whole group of barrel to weld the cooperation; the production efficiency can be greatly improved.

The utility model has the advantages that the inner component of the PDH device can be integrally assembled, calibrated and longitudinally welded, the misalignment error between the circumferential welds of the cylinder sections can be reduced or eliminated, the welding precision is improved, the operation is simple and convenient, and the welding cost can be reduced; meanwhile, the device plays a role in rounding the barrel, particularly the net barrel thin-wall barrel.

Claims (10)

1. The utility model provides a be applicable to PDH device outer screen barrel ring longitudinal weld group to welding frock which characterized in that: a plurality of support ring assemblies (1) are fixedly connected to a main shaft (4) of the welding tool, the periphery rings of the support ring assemblies (1) are connected through a main connecting rod (5) in sequence, and two ends of the main shaft (4) of the welding tool are fixed to a shaft support assembly (2).

2. The welding tool suitable for longitudinal weld pairing of outer mesh cylindrical rings of a PDH device as defined in claim 1, wherein: the support ring assembly (1) consists of a support ring outer ring, a support ring inner ring and support ring supporting rods (1-5), and the support ring inner ring and the support ring outer ring are fixedly connected through the support ring supporting rods (1-5) at equal radians;

the outer ring of the support ring comprises a left outer ring (1-1) of the support ring and a right outer ring (1-2) of the support ring, the left outer ring (1-1) of the support ring and the right outer ring (1-2) of the support ring are clamped, rod penetrating holes (1-8) with equal arc distances are formed in the arc edges of the left outer ring (1-1) of the support ring and the right outer ring (1-2) of the support ring, and a main connecting rod (5) sequentially penetrates through the rod penetrating holes (1-8) to be connected with a plurality of support ring components (1);

the inner ring of the support ring comprises a left ring (1-3) in the support ring and a right ring (1-4) in the support ring, the left ring (1-3) in the support ring and the right ring (1-4) in the support ring are of the same symmetrical arc segment structure, and the left ring (1-3) in the support ring and the right ring (1-4) in the support ring are butted.

3. The welding tool suitable for a cylindrical ring longitudinal weld assembly of an outer mesh of a PDH device as defined in claim 2, wherein: the left outer ring (1-1) and the right outer ring (1-2) of the support ring are of staggered circular arc section structures.

4. The welding tool suitable for a cylindrical ring longitudinal weld assembly of an outer mesh of a PDH device as defined in claim 2, wherein: convex buckles (1-6) are respectively arranged at two ends of the arc section of the left outer ring (1-1) of the support ring, concave buckles (1-7) are respectively arranged at two ends of the arc section of the right outer ring (1-2) of the support ring, and the convex buckles (1-6) and the concave buckles (1-7) at the corresponding ends are clamped.

5. The welding tool suitable for longitudinal weld pairing of outer mesh cylindrical rings of a PDH device as defined in claim 1, wherein: the shaft support assembly comprises a shaft support rod (2-5), a bottom plate (2-6) and a first roller body (2-22), the shaft support rod (2-5) is fixed on the bottom plate (2-6), the shaft support rod (2-5) is fixedly connected with the first roller body (2-22) through a front support supporting plate and a rear support supporting plate (2-7), and a main shaft (4) is connected in the first roller body; the first roller body (2-22) comprises a first upper roller (2-8) and a first lower roller (2-9), the first upper roller (2-8) and the first lower roller (2-9) are of the same structure, a semi-circular roller body with balls (2-19) is embedded in the first upper roller (2-8), and the first upper roller (2-8) is fixedly connected with the first lower roller (2-9).

6. The welding tool suitable for a cylindrical ring longitudinal weld assembly of an outer mesh of a PDH device as defined in claim 5, wherein the welding tool comprises: the shaft bracket assembly is also provided with a left main stay bar (2-1) of a diagonal brace, a right main stay bar (2-2) of the diagonal brace, a left auxiliary stay bar (2-3) of the diagonal brace and a right auxiliary stay bar (2-4) of the diagonal brace; one end of each of the left main stay bar (2-1) of the diagonal brace, the right main stay bar (2-2) of the diagonal brace, the left auxiliary stay bar (2-3) of the diagonal brace and the right auxiliary stay bar (2-4) of the diagonal brace is connected with the corresponding shaft stay bar (2-5), and the other end of each of the left main stay bar and the right auxiliary stay bar of the diagonal brace is connected with the corresponding bottom plate (2-6); the left main stay bar (2-1) and the right main stay bar (2-2) of the diagonal brace are arranged at two sides of the shaft support bar (2-5) in an axisymmetric manner by taking the shaft support bar (2-5) as an axis, and the left auxiliary stay bar (2-3) and the right auxiliary stay bar (2-4) of the diagonal brace are also arranged at two sides of the shaft support bar (2-5) in an axisymmetric manner by taking the shaft support bar (2-5) as an axis.

7. The welding tool suitable for a cylindrical ring longitudinal weld assembly of an outer mesh of a PDH device as defined in claim 5, wherein the welding tool comprises: the shaft supporting rod (2-5) is composed of a plurality of sections of H-shaped steel materials which sequentially pass through shaft bracket connecting plates (2-12).

8. The welding tool suitable for longitudinal weld pairing of outer mesh cylindrical rings of a PDH device as defined in claim 1, wherein: the main shaft (4) is fixedly connected with a plurality of support ring assemblies (1) through a connecting assembly (3), the connecting assembly (3) comprises support ring shaft sleeve connecting rings (3-1) and second roller bodies (3-6), the support ring shaft sleeve connecting rings (3-1) are annularly welded at the central ring parts of the second roller bodies (3-6), and the support ring shaft sleeve connecting rings (3-1) are fixedly connected with the support ring inner rings of the support ring assemblies (1); the second roller body (3-6) comprises a second upper roller (3-2) and a second lower roller (3-3), the second upper roller (3-2) and the second lower roller (3-3) are of the same structure, a semicircular roller body with balls (2-19) is embedded in the second upper roller (3-2), and the second upper roller (3-2) is fixedly connected with the second lower roller (3-3).

9. The welding tool suitable for a longitudinal weld group of an outer mesh cylindrical ring of a PDH device as set forth in claim 5 or 8, wherein: the first upper roller (2-8), the second upper roller (3-2), the first lower roller (2-9) and the second lower roller (3-3) are all of structures formed by turning L-shaped grooves (2-21) from semi-cylindrical stainless steel bodies along two inner arc edges, blocking ridges (3-5) are arranged on the inner edge edges of the L-shaped grooves (2-21), and balls (2-19) are just placed in the L-shaped grooves (2-21).

10. The welding tool suitable for a longitudinal weld group of an outer mesh cylindrical ring of a PDH device as set forth in claim 5 or 8, wherein: the front and the back of the first roller body and the second roller body are respectively provided with a limiter (6), each limiter is composed of an upper limit (6-1) and a lower limit (6-2) which have the same structure, the upper limit (6-1) and the lower limit (6-2) are fixedly connected, and the inner circle radius formed by the upper limit (6-1) and the lower limit (6-2) is the same as the outer circle radius of the main shaft (4).

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