CN217750193U - Unstressed shell ring assembly skid-mounted device - Google Patents
Unstressed shell ring assembly skid-mounted device Download PDFInfo
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- CN217750193U CN217750193U CN202221575011.9U CN202221575011U CN217750193U CN 217750193 U CN217750193 U CN 217750193U CN 202221575011 U CN202221575011 U CN 202221575011U CN 217750193 U CN217750193 U CN 217750193U
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- shell ring
- adjusting
- adjusting mechanism
- lead screw
- sliding table
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Abstract
A skid-mounted device for assembling unstressed shell rings relates to the technical field of pressure vessel manufacturing. The device comprises two shell ring adjusting supports arranged side by side, a shell ring assembling station is arranged in the middle of each adjusting support, slide rails are arranged on two sides of the assembling station, and the adjusting supports are slidably arranged on the slide rails; the adjusting bracket comprises a longitudinal adjusting mechanism capable of longitudinally adjusting the position of the shell ring and a transverse adjusting mechanism capable of transversely adjusting the position of the shell ring, and the transverse adjusting mechanism is provided with a rotating device convenient for the shell ring to rotate; the longitudinal adjusting mechanism comprises two bases which are arranged on the sliding rail in a sliding way, and the bases are connected through a transmission device; the transverse adjusting mechanism is a lead screw sliding table assembly, the lead screw sliding table assembly comprises two mounting seats arranged on a lead screw, the rotating device is arranged on the mounting seats, and a telescopic rod capable of adjusting the height of the cylinder section is arranged between the lead screw sliding table assembly and the base; the beneficial effects of the utility model are that can eliminate shell ring group to in-process unfitness of butt joint, avoid producing welding seam stress concentration's harm.
Description
Technical Field
The utility model belongs to the technical field of pressure vessel makes technique and specifically relates to an unstressed shell ring group is to sled dress device.
Background
Whether a pressure vessel or a boiler or other equipment, the main body part of the pressure vessel is generally composed of a single shell section or a plurality of shell sections, and the two ends of the single (or a plurality of) shell sections are often respectively provided with a seal head or a flange or a seal plate and the like. And the shell ring (or the seal head, or the flange, or the seal plate) have certain diameter difference, the diameter difference of the butt joint part in the assembling process can form misalignment (namely, the misalignment is not as high), and the misalignment has great influence on the quality of the welding seam, so that the misalignment is controlled to be indispensable. The misalignment in the assembly process cannot be avoided, and the diameter of the connecting position of the shell ring and the shell ring (or a seal head, or a flange, or a seal plate) is not machined, so that the size consistency is poor, the misalignment cannot be avoided more or less, the most economical, practical and effective method is to equally divide the misalignment amount circumferentially, the misalignment difference is controlled within a certain range, and the circular seam misalignment difference is less than or equal to 1/4 of the plate thickness according to the requirements of the national relevant standard GB 150-2011. The uniform distribution of the misalignment unstressed whole circles with the thickness less than or equal to 1/4 of the plate thickness is very important according to the requirement, and the patent is designed for realizing the uniform distribution of the misalignment unstressed whole circles.
Damage of misalignment in welding seams: 1. the effective thickness is reduced, and the strength is reduced; 2. stress concentration is formed, so that the stress of a welding seam is poor; 3. if the flange at the staggered side has load, cracks and serious fracture easily occur at the staggered position.
Hazards of stress concentration in welds: 1. strength effects if there are severe defects in the high residual tensile stress region, and the weldment is operated below the brittle transition temperature, the weld residual stress will reduce the static load strength. Under the action of cyclic stress, if residual tensile stress exists at the stress concentration position, the fatigue strength of a weldment is reduced due to the welding residual tensile stress; 2. the influence on the rigidity is that the welding residual stress is superposed with the stress caused by external load, so that the local early yielding of the weldment can be caused to generate plastic deformation. The stiffness of the weldment will therefore be reduced; 3. influence on the stability of the welded piece, namely, when the welded rod piece is pressed, the welding residual stress is superposed with the stress caused by external load, so that the rod piece is possibly broken.
At present, equipment such as hammering, pulling a hoist, a horse board and the like are mostly used by a production and manufacturing unit to forcibly pull the staggered edge of the assembly part, and the staggered edge is forcibly pasted and fixed by spot welding, so that the whole circle of the welding line is seriously staggered locally, and the locally forcibly assembled internal stress is serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to prior art provides one kind can be to the unstressed elimination shell ring group to in-process unfitness of butt joint, avoids producing the unstressed shell ring group of welding seam stress concentration harm to sled dress device.
The technical problem to be solved by the utility model is realized by the following technical scheme, the utility model relates to a skid-mounted device for assembling unstressed shell ring, which is characterized by comprising two shell ring adjusting supports arranged side by side, wherein the middle of each adjusting support is provided with a shell ring assembling station, slide rails are arranged at two sides of the assembling station, and the adjusting supports are slidably arranged on the slide rails;
the adjusting bracket comprises a longitudinal adjusting mechanism capable of longitudinally adjusting the position of the shell ring and a transverse adjusting mechanism capable of transversely adjusting the position of the shell ring, and the transverse adjusting mechanism is provided with a rotating device convenient for the shell ring to rotate;
the longitudinal adjusting mechanism comprises two bases which are arranged on a sliding rail on one side of the assembly station in a sliding manner, and the bases are connected through a transmission device; the transverse adjusting mechanism is a lead screw sliding table assembly, the lead screw sliding table assembly comprises two mounting seats arranged on a lead screw, the rotating device is arranged on the mounting seats, and a telescopic rod capable of adjusting the height of the cylinder section is arranged between the lead screw sliding table assembly and the base;
the rotating device comprises a swinging support, the bottom end of the swinging support is hinged to the mounting seat, and a roller capable of supporting the shell ring and enabling the shell ring to rotate is arranged at the top end of the swinging support.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, transmission is ball screw transmission.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, install the flexible cylinder of the flexible adjustment shell ring height of drive telescopic link on the base in the middle of the telescopic link.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, the gyro wheel is provided with 2 along shell ring circumference.
Compared with the prior art, the utility model has the advantages that the base is arranged on the slide rail in a sliding way, and the two bases are connected through the transmission of the ball screw, so that the longitudinal left and right adjustment of the shell ring during the assembly is realized; the cylinder section is transversely adjusted left and right by arranging the screw rod sliding table assembly, so that the requirement that the transverse position of the cylinder section needs to be adjusted by eliminating stress when the cylinder section is assembled is met; through set up rotary device on lead screw slip table subassembly, it is rotatory to drive the shell ring when the group is to, equally divide the unfitness of butt joint circumference, controls the unfitness of butt joint within a certain limit, reduces the harm that unfitness of butt joint and stress are concentrated in the welding seam.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic view of the structure of the present invention;
fig. 3 is a schematic side view of the present invention.
In the figure: 1. the device comprises a first shell ring, a second shell ring, a telescopic cylinder, a lead screw sliding table assembly, a base, a guide rail, a ball screw transmission, a roller, a swinging support, a mounting seat and a telescopic rod, wherein the first shell ring is 2, the second shell ring is 3, the telescopic cylinder is 4, the base is 5, the guide rail is 6, the ball screw transmission is 7, the roller is 8, the swinging support is 9, the mounting seat is 10, and the telescopic rod is 11.
Detailed Description
The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
Referring to fig. 1-3, an unstressed shell ring assembly skid-mounted device is characterized in that: the device comprises two shell ring adjusting supports arranged side by side, a shell ring assembling station is arranged in the middle of each adjusting support, slide rails are arranged on two sides of the assembling station, and the adjusting supports are slidably arranged on the slide rails;
the adjusting bracket comprises a longitudinal adjusting mechanism capable of longitudinally adjusting the position of the shell ring and a transverse adjusting mechanism capable of transversely adjusting the position of the shell ring, and the transverse adjusting mechanism is provided with a rotating device convenient for the shell ring to rotate;
the longitudinal adjusting mechanism comprises two bases which are arranged on a slide rail on one side of the assembly station in a sliding mode, and the bases are connected through a transmission device; the transverse adjusting mechanism is a lead screw sliding table assembly, the lead screw sliding table assembly comprises two mounting seats arranged on a lead screw, the rotating device is arranged on the mounting seats, and a telescopic rod capable of adjusting the height of the shell ring is arranged between the lead screw sliding table assembly and the base;
the rotating device comprises a swinging support, the bottom end of the swinging support is hinged to the mounting seat, and a roller capable of supporting the shell ring and enabling the shell ring to rotate is arranged at the top end of the swinging support.
The gyro wheel is provided with 2 along shell ring circumference, and when the diameter of shell ring changed, the gyro wheel that sets up in the support outside of swaing can support the shell ring of great diameter, improves the practicality of device.
The transmission device is in ball screw transmission, the screw is arranged at the centers of the two bases and connects the bases, and the motor drives the screw to rotate so as to drive the bases to slide on the sliding rails and change the longitudinal position of the shell ring.
And a telescopic cylinder for driving the telescopic rod to telescopically adjust the height of the cylindrical shell is arranged on the base in the middle of the telescopic rod.
The utility model discloses concrete operation when using as follows: hoisting the shell ring to a rotating device at the top of the adjusting support, hinging a swinging support on the rotating device to the mounting seat, and simultaneously supporting the shell ring by a roller at the top end of the swinging support and manually enabling the shell ring to rotate circumferentially; the mounting seats are arranged in the screw rod sliding table assembly in a sliding mode, the two mounting seats move left and right on the screw rod sliding table assembly, the transverse position of the cylinder section can be slightly changed, the screw rod sliding table assembly comprises a motor arranged at one end, and the motor drives the screw rod sliding sleeve assembly to operate; the telescopic rod arranged between the screw rod sliding table assembly and the base can adjust the height of the cylinder section assembly, and the telescopic rod is driven by a telescopic cylinder arranged between the telescopic rods to realize the lifting of the cylinder section; the longitudinal adjustment of the shell ring is realized by the sliding of the bases on the sliding rail, and the two bases are in transmission connection through the ball screw, so that the longitudinal left-right adjustment is realized. And respectively measuring the circumferences of the butt joint positions of the two shell rings to calculate a circumference error, calculating the numerical value of the average misalignment error of the whole ring, and setting the circumferential seam misalignment difference to be less than or equal to 1/4 of the plate thickness according to the requirements of the national relevant standard GB 150-2011. The device is designed for realizing the uniform distribution of the unstressed staggered edge amount of the plate with the thickness less than or equal to 1/4 of the plate thickness.
The cylinder section can be adjusted in the transverse direction, the longitudinal direction, the circumferential direction and the height direction through the whole skid-mounted device, and the misalignment error of the cylinder section to be assembled is controlled within a certain range by continuously adjusting the distance of each direction of the cylinder section in the assembling process.
Claims (4)
1. The utility model provides a no stress shell ring group is to sled dress device which characterized in that: the device comprises two shell ring adjusting supports arranged side by side, a shell ring assembling station is arranged in the middle of each adjusting support, slide rails are arranged on two sides of the assembling station, and the adjusting supports are slidably arranged on the slide rails;
the adjusting bracket comprises a longitudinal adjusting mechanism capable of longitudinally adjusting the position of the shell ring and a transverse adjusting mechanism capable of transversely adjusting the position of the shell ring, and the transverse adjusting mechanism is provided with a rotating device convenient for the shell ring to rotate;
the longitudinal adjusting mechanism comprises two bases which are arranged on a slide rail on one side of the assembly station in a sliding mode, and the bases are connected through a transmission device; the transverse adjusting mechanism is a lead screw sliding table assembly, the lead screw sliding table assembly comprises two mounting seats arranged on a lead screw, the rotating device is arranged on the mounting seats, and a telescopic rod capable of adjusting the height of the shell ring is arranged between the lead screw sliding table assembly and the base;
the rotating device comprises a swinging support, the bottom end of the swinging support is hinged to the mounting seat, and a roller capable of supporting the shell ring and enabling the shell ring to rotate is arranged at the top end of the swinging support.
2. The unstressed shell ring assembly skid device of claim 1, wherein: the transmission device is driven by a ball screw.
3. The unstressed shell ring assembly skid device of claim 1, wherein: and a telescopic cylinder for driving the telescopic rod to telescopically adjust the height of the cylinder section is arranged on the base in the middle of the telescopic rod.
4. The unstressed shell ring assembly skid device of claim 1, wherein: the gyro wheel is provided with 2 along shell ring circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221575011.9U CN217750193U (en) | 2022-06-23 | 2022-06-23 | Unstressed shell ring assembly skid-mounted device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221575011.9U CN217750193U (en) | 2022-06-23 | 2022-06-23 | Unstressed shell ring assembly skid-mounted device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217750193U true CN217750193U (en) | 2022-11-08 |
Family
ID=83894944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221575011.9U Active CN217750193U (en) | 2022-06-23 | 2022-06-23 | Unstressed shell ring assembly skid-mounted device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217750193U (en) |
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2022
- 2022-06-23 CN CN202221575011.9U patent/CN217750193U/en active Active
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