CN112388243A

CN112388243A - Cylindrical shell section assembling and rounding machine

Info

Publication number: CN112388243A
Application number: CN202011320664.8A
Authority: CN
Inventors: 于洋; 刘鸿滨; 李军华; 孙玉勇; 李德君; 宫达峰; 张博
Original assignee: Wuxi Xinsong Robot Automation Co ltd
Current assignee: Wuxi Xinsong Robot Automation Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-02-23

Abstract

The invention discloses a cylindrical shell section assembling and circle expanding machine which comprises a main beam, wherein a plurality of groups of annular circle expanding devices for expanding cylindrical shell sections are arranged on the main beam, a position changing device for driving the main beam to rotate along the axis of the main beam is arranged outside the main beam, each annular circle expanding device comprises a plurality of contact blocks of which the outer walls are abutted against the inner wall of the cylindrical shell section, the outer walls of the contact blocks are in a convex arc shape attached to the inner wall of the cylindrical shell section, a plurality of groups of jacking devices for driving each contact block to slide along the radial direction of the main beam are arranged on the main beam, one end of the convex arc shape of the outer wall of each contact block is provided with a male head, the other end of the convex arc shape of the outer wall of each contact block is provided with a female head, the male heads are attached to and inserted into. The two cylinder sections are respectively expanded by the aid of the plurality of groups of annular circle expanding devices, so that the two cylinder sections are quickly positioned and fixed.

Description

Cylindrical shell section assembling and rounding machine

Technical Field

The invention relates to a round expander, in particular to a cylindrical shell section pairing round expander.

Background

At present, strict requirements on assembly gaps and misalignment are required during assembly and welding of shell ring of a pressure container, an L-shaped temporary part is welded on the outer surface of a shell ring generally, then the L-shaped temporary part is operated manually to enable two shell ring assemblies to be assembled so as to meet the assembly and welding requirements, the L-shaped temporary accessory is removed after assembly and welding are completed, and finally the welding position of the L-shaped temporary accessory is polished smoothly.

Or through increasing manual jacking frock in the shell ring is inside, the manual work is adjusted wrong limit and clearance. The two modes have the defects of complicated operation of workers, great workload, great operation difficulty, long assembly time consumption, influence on the appearance quality of products and the like, and are extremely difficult to ensure the quality and consistency of the products.

Disclosure of Invention

The invention aims to solve the technical problem of providing a welding machine which can quickly assemble the shell ring, ensure the requirements of assembly gaps and misalignment of the two shell ring sections and meet the corresponding welding process requirements. The shell ring assembly round-expanding machine has the advantages of convenience in operation, high automation degree and capability of ensuring the appearance quality and the consistency of products.

In order to achieve the technical purpose, the invention provides the following technical scheme: the utility model provides a shell ring group is to circle machine that expands, includes the girder, be equipped with the annular circle device that expands that the multiunit is used for the expanded shell ring on the girder, the girder is provided with the device that shifts of drive girder along self axis rotation outward, annular circle device that expands is including the contact block that evenly sets up a plurality of outer wall butt shell ring inner walls outside the girder, the outer wall of contact block sets up the convex arc to laminating shell ring inner wall, be provided with the jacking device that every contact block of multiunit drive radially slided along the girder on the girder, every the one end of the convex arc of outer wall of contact block sets up to public head, and the other end sets up to female head, public head laminating inserts female head internal slipping, every after the contact block was released by the jacking device, it is a plurality of the lateral wall of contact block encloses the circular of form laminating shell ring inner.

Through adopting above-mentioned technical scheme, the staff hangs up two shell ring sections through hoisting equipment earlier and overlaps outside annular circle device that expands, two shell ring sections laminating and loosen hoisting equipment, start annular circle device that expands, the jacking device is ejecting with the contact block, the contact block butt shell ring section inner wall, support the shell ring section tightly, the contact block props the circle with the shell ring section inner wall simultaneously, welder's bonding tool is close to and treats the department of welding, the device that shifts drives the slow rotation at the uniform velocity of girder, with two shell ring sections welded fastening together, do not need artifical counterpoint, the contact block folds simultaneously and forms circularly, the circularity of shell ring section has been guaranteed, the swift welded fastening of shell ring section has been realized.

Preferably, the annular circle expanding devices are four groups, the second group of annular circle expanding devices close to the position changing device is abutted to the butt joint of the two cylinder sections, the two groups of annular circle expanding devices far away from the position changing device are used for abutting against the outer cylinder section, and the first group of annular circle expanding devices close to the position changing device is used for abutting against the other cylinder section.

By adopting the technical scheme, the outer shell ring is welded and fixed with other shell rings, so that the shell ring is heavy in weight, two groups of annular circle expansion devices are required to be tightly supported, the shell ring inside can be tightly supported by one group of annular circle expansion devices, and meanwhile, the middle third group of annular circle expansion devices tightly support the butt joint of two section shell rings, so that the welding stability is ensured. Meanwhile, the structural reasonability is improved, the production cost is reduced, and the working efficiency is improved.

As preferred, the jacking device is including fixing the servo motor on the girder, the jacking device is provided with along girder radial sliding's ball screw mechanism, servo motor drives the lead screw rotation, the slider and the contact piece fixed connection that the lead screw overcoat was established, the jacking device is provided with the harmonic speed reducer with the servo motor adaptation, the jacking device still is provided with two guide bars that are located the lead screw both sides respectively, guide bar tip and contact piece fixed connection, the jacking device is provided with the sleeve that is used for sealed lead screw, the fixed deflector that supplies the guide bar laminating to pass that is provided with on the sleeve.

By adopting the technical scheme, the contact block is ensured to stably extend out by means of the matching of the servo motor and the harmonic speed reducer, and the round expansion accuracy is improved.

Preferably, the outer side wall of the contact block which is abutted against the two cylindrical sections is provided with a groove along the length direction, the groove is positioned in the middle of the contact block, a back shielding gas device is arranged in the groove, and the back shielding gas device is used for spraying welding shielding gas.

By adopting the technical scheme, during welding, the back shielding gas device can spray welding shielding gas to protect a welding position, so that the requirements of a welding process are met, and manual extra protection is not needed.

Preferably, be provided with the clearance adjustment device that is located between annular circle device and the device that shifts that expands on the girder, clearance adjustment device is provided with the foundation frame who inlays and establishes in the girder, be provided with thrust frame between the foundation frame, thrust frame's circumference evenly is provided with many thrust arms that are used for promoting the shell ring, thrust frame slides along foundation frame length direction through ball mechanism, be provided with the servo motor of drive screw rotation on the foundation frame, the end protrusion in the shell ring of thrust arm.

Through adopting above-mentioned technical scheme, cover two shell ring sections back outside the girder, remove the terminal surface of preceding shell ring section to the annular circle device department of expanding of third group earlier, start two sets of annular circle devices that expand before with preceding shell ring section fixed, restart clearance adjustment device, the thrust arm is close to the shell ring section of back and promotes the shell ring, makes two sets of shell ring sections closely laminate, two sets of annular circle devices that expand after starting, with the circle of back shell ring section also expand, guaranteed that two shell ring sections closely laminate, further improved welding precision.

Preferably, the tail end of the thrust arm is provided with a thrust contact piece for abutting against the shell ring, and the thrust contact piece is made of an elastic material.

Through adopting above-mentioned technical scheme, the thrust contact separates the thrust arm and shell ring, receives the extrusion back deformation of shell ring, has guaranteed that the terminal surface of shell ring is not damaged, avoids influencing follow-up welding effect.

Preferably, the base frame is evenly arrayed with three guide shafts along the length direction in the circumferential direction, the thrust frame is provided with through holes for the guide shafts to fit and penetrate through, and the guide shafts are connected with the thrust frame in a sliding mode through linear bearings.

Through adopting above-mentioned technical scheme, three guiding axles play the guide effect to thrust frame, have guaranteed that thrust frame slides along basic frame length direction level, have further improved the accuracy of counterpointing.

Preferably, reinforcing ribs are arranged in the main beam, and reinforcing ribs are also arranged at the joints of the main beam, the annular expansion device and the gap adjusting device.

Through adopting above-mentioned technical scheme, increased the structural strength of girder, improved structural bending strength.

In summary, the present invention achieves the following effects:

1. the two cylinder sections are respectively expanded by the aid of a plurality of groups of annular circle expansion devices, and the jacking devices are matched with male heads and female heads of the contact blocks, so that the two cylinder sections are quickly positioned and fixed;

2. the cylinder section is tightly propped by the aid of the gap adjusting device, and welding accuracy is guaranteed.

Drawings

FIG. 1 is a schematic view for showing the overall structure in the present embodiment;

FIG. 2 is a schematic diagram illustrating the relationship between the contact block and the jacking device in the present embodiment;

FIG. 3 is a schematic diagram illustrating a specific structure of a common contact block in the present embodiment;

fig. 4 is a schematic diagram showing a specific structure of the gap adjusting device in the present embodiment;

fig. 5 is a schematic diagram for showing the contracted state of the annular expansion device in the embodiment.

In the figure, 1, a main beam; 11. a displacement device; 2. an annular expansion device; 22. a contact block; 23. a jacking device; 24. a male head; 25. a female head; 26. a guide bar; 27. a sleeve; 28. a guide plate; 29. a back shielding gas device; 3. a gap adjusting device; 31. a base frame; 32. a thrust frame; 33. a thrust arm; 34. a thrust contact member; 35. and a guide shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example (b): the utility model provides a shell ring group is to circle machine that expands, as shown in fig. 1 and 5, including girder 1, be equipped with the annular circle device 2 that expands that the multiunit is used for expanding the shell ring on girder 1, girder 1 is provided with the displacement device 11 that drives girder 1 along self axis rotation outward, annular circle device 2 that expands is including the contact block 22 that evenly sets up six outer wall butt shell ring inner walls outside girder 1, the outer wall of contact block 22 sets up the convex arc shape of laminating shell ring inner wall, be provided with every contact block 22 of multiunit drive along the jacking device 23 of girder 1 radial slippage on girder 1, the outer wall convex arc shape's of every contact block 22 one end sets up to public head 24 (refer to fig. 2), the other end sets up to female head 25, public head 24 laminating inserts female head 25 internal slipping, every contact block 22 is released the back by jacking device 23, the lateral wall of a plurality of contact blocks 22 encloses the circular that forms laminating shell ring inner.

The working personnel firstly hoist the two sections of the cylindrical shell sections through the hoisting equipment and sleeve the two sections of the cylindrical shell sections outside the annular circle expanding device 2, the two sections of the cylindrical shell sections are attached to and loosened from the hoisting equipment, the annular circle expanding device 2 is started, the jacking device 23 ejects the contact block 22 out, the contact block 22 abuts against the inner wall of the cylindrical shell section and tightly abuts against the cylindrical shell section, meanwhile, the contact block 22 props the inner wall of the cylindrical shell section into a circle, the welding head of the welding gun is close to a position to be welded, the displacement device 11 drives the main beam 1 to slowly rotate at a constant speed, the two sections of the cylindrical shell sections are welded and fixed together without manual alignment, meanwhile, the contact block 22 is folded to form a circle.

As shown in fig. 1 and 5, the annular expansion devices 2 are four groups, the second group of annular expansion devices 2 close to the displacement device 11 is abutted to the butt joint of the two cylinder sections, the two groups of annular expansion devices 2 far away from the displacement device 11 are used for abutting against the outer cylinder section, and the first group of annular expansion devices 2 close to the displacement device 11 is used for abutting against the other cylinder section. The shell ring of outside has welded fastening with other shell rings, therefore the weight of this shell ring is big, needs two sets of annular circle expanding device 2 to support tightly, and the shell ring of the inside can support tightly with a set of annular circle expanding device 2, and the third group annular circle expanding device 2 in the middle of the while supports the butt joint department of two sections shell rings tightly, has guaranteed welded stability. Meanwhile, the structural reasonability is improved, the production cost is reduced, and the working efficiency is improved.

As shown in fig. 2, the jacking device 23 includes a servo motor fixed on the main beam 1, the jacking device 23 is provided with a ball screw mechanism sliding along the main beam 1 in the radial direction, the servo motor drives the screw to rotate, the slider and the contact block 22 fixed connection that the screw overcoat was established, the jacking device 23 is provided with the harmonic speed reducer with the servo motor adaptation, the jacking device 23 is further provided with two guide bars 26 that are located the screw both sides respectively, the guide bar 26 tip and the contact block 22 fixed connection, the jacking device 23 is provided with the sleeve 27 that is used for sealing the screw, the fixed deflector 28 that supplies the laminating of guide bar 26 to pass that is provided with on the sleeve 27. By means of the cooperation of the servo motor and the harmonic speed reducer, the contact block 22 is ensured to stably extend, and the circle expansion accuracy is improved.

As shown in fig. 3, the outer side wall of the contact block 22 abutting against the two cylindrical sections is provided with a groove along the length direction thereof, the groove is located in the middle of the contact block 22, a back shielding gas device 29 is arranged in the groove, and the back shielding gas device 29 is used for spraying welding shielding gas. During welding, the back shielding gas device 29 can spray welding shielding gas to protect a welding position, so that the requirements of a welding process are met, and manual extra protection is not needed.

As shown in fig. 4, a gap adjusting device 3 between the annular circle expanding device 2 and the displacement device 11 is arranged on the main beam 1, the gap adjusting device 3 is provided with a base frame 31 embedded in the main beam 1, a thrust frame 32 is arranged between the base frames 31, a plurality of thrust arms 33 used for pushing the shell ring are uniformly arranged in the circumferential direction of the thrust frame 32, the thrust frame 32 slides along the length direction of the base frame 31 through a ball screw mechanism, a servo motor for driving the screw to rotate is arranged on the base frame 31, and the tail ends of the thrust arms 33 protrude out of the shell ring. After the two shell ring sections are sleeved outside the main beam 1, the end face of the previous shell ring section is moved to the third group of annular circle expansion devices 2, the previous two groups of annular circle expansion devices 2 are started to fix the previous shell ring section, the gap adjusting device 3 is started again, the pushing arm 33 is close to the next shell ring section and pushes the shell ring section, so that the two groups of shell ring sections are tightly attached, the next two groups of annular circle expansion devices 2 are started to expand the next shell ring section, the two shell ring sections are tightly attached, and the welding precision is further improved.

As shown in fig. 4, the end of the thrust arm 33 is provided with a thrust contact piece 34 for abutting against the shell section, and the thrust contact piece 34 is made of an elastic material. The thrust contact piece 34 separates the thrust arm 33 from the shell ring, and the thrust arm is deformed after being extruded by the shell ring, so that the end face of the shell ring is prevented from being damaged, and the subsequent welding effect is prevented from being influenced.

As shown in fig. 4, three guide shafts 35 are uniformly arrayed along the length direction in the circumferential direction of the base frame 31, through holes for the guide shafts 35 to fit and pass through are formed in the thrust frame 32, and the guide shafts 35 and the thrust frame 32 are slidably connected through linear bearings. The three guide shafts 35 play a role in guiding the thrust frame 32, so that the thrust frame 32 is ensured to horizontally slide along the length direction of the basic frame 31, and the alignment accuracy is further improved.

The main beam 1 is internally provided with a reinforcing rib, and the joints of the main beam 1, the annular expansion device 2 and the gap adjusting device 3 are also provided with the reinforcing rib. The structural strength of the main beam 1 is increased, and the structural bending strength is improved.

The working process is as follows: after the first section of the cylindrical shell section is sleeved, a telescopic limiting device is arranged at the theoretical joint of the cylindrical shell section to accurately position the second section of the cylindrical shell section when the second section is sleeved; then two groups of annular circle expanding devices 2 at the front section of the circle expanding machine extend out to completely expand the circle, the positioning device retracts, the two groups of annular supports pre-expand the first section of the cylindrical section, then the gap adjusting device 3 pushes the cylindrical section tightly, next the two groups of annular circle expanding devices 2 completely expand the cylindrical section into a circle, and the front displacement device 11 drives the main beam 1 to rotate to realize welding.

Claims

1. The utility model provides a shell ring group is to circle inflation machine, includes girder (1), its characterized in that: the circular tube expansion device is characterized in that a plurality of groups of circular tube expansion devices (2) used for expanding a tube section are arranged on the main beam (1), a displacement device (11) for driving the main beam (1) to rotate along the axis of the main beam is arranged outside the main beam (1), each circular tube expansion device (2) comprises a plurality of contact blocks (22) with outer walls abutted to the inner wall of the tube section, the contact blocks (22) are uniformly distributed along the circumferential direction of the main beam (1), the outer wall of each contact block (22) is in a convex arc shape fitted to the inner wall of the tube section, a plurality of groups of jacking devices (23) for driving each contact block (22) to slide along the radial direction of the main beam (1) are arranged on the main beam (1), one end of the convex arc shape of the outer wall of each contact block (22) is arranged to be a male head (24), the other end of each contact block is arranged to be a female head (25), the male head (24), the outer side walls of the contact blocks (22) are closed to form a circle attached to the inner wall of the shell ring.

2. The shell ring pair expander according to claim 1, wherein: the annular circle expanding devices (2) are four groups, the second group close to the position changing device (11) is abutted to the butt joint of the two cylinder sections, the two groups of annular circle expanding devices (2) far away from the position changing device (11) are used for abutting against the outside cylinder section, and the first group of annular circle expanding devices (2) close to the position changing device (11) is used for abutting against the other cylinder section.

3. The shell ring pair expander according to claim 2, wherein: jacking device (23) is including fixing the servo motor on girder (1), jacking device (23) are provided with along girder (1) radial sliding's ball screw mechanism, servo motor drives the lead screw rotation, the slider and contact block (22) fixed connection that the lead screw overcoat was established, jacking device (23) are provided with the harmonic speed reducer machine with the servo motor adaptation, jacking device (23) still are provided with two guide bars (26) that are located the lead screw both sides respectively, guide bar (26) tip and contact block (22) fixed connection, jacking device (23) are provided with sleeve (27) that are used for sealed lead screw, fixed deflector (28) that supply guide bar (26) laminating to pass on sleeve (27).

4. A shell ring pairing rounder according to claim 3, characterized in that: the outer side wall of the contact block (22) which is abutted against the two sections of the cylindrical sections is provided with a groove along the length direction of the outer side wall, the groove is positioned in the middle of the contact block (22), a back protective gas device (29) is arranged in the groove, and the back protective gas device (29) is used for spraying welding protective gas.

5. The shell ring pair expander according to claim 4, wherein: be provided with on girder (1) and be located annular circle device (2) that expand and device (11) clearance adjustment device (3) that shift between device (11) shift, clearance adjustment device (3) are provided with and inlay basic frame (31) of establishing in girder (1), be provided with thrust frame (32) between basic frame (31), the circumference of thrust frame (32) evenly is provided with many thrust arms (33) that are used for promoting the shell ring, thrust frame (32) slide along basic frame (31) length direction through ball screw mechanism, be provided with the servo motor of drive screw rotation on basic frame (31), the terminal protrusion in the shell ring of thrust arm (33).

6. The shell ring pair expander according to claim 5, wherein: the tail end of the thrust arm (33) is provided with a thrust contact piece (34) used for abutting against the cylinder section, and the thrust contact piece (34) is made of elastic materials.

7. The shell ring pair expander according to claim 6, wherein: the base frame (31) circumference has three guiding axles (35) along length direction even array, set up the through-hole that supplies guiding axle (35) laminating to pass on thrust frame (32), guiding axle (35) and thrust frame (32) pass through linear bearing sliding connection.

8. The shell ring pair expander according to claim 7, wherein: the novel steel pipe is characterized in that reinforcing ribs are arranged in the main beam (1), and the reinforcing ribs are also arranged at the joints of the main beam (1), the annular expansion device (2) and the gap adjusting device (3).