CN217858123U - Non-roundness correcting device for large-diameter steel pipe - Google Patents
Non-roundness correcting device for large-diameter steel pipe Download PDFInfo
- Publication number
- CN217858123U CN217858123U CN202221705243.1U CN202221705243U CN217858123U CN 217858123 U CN217858123 U CN 217858123U CN 202221705243 U CN202221705243 U CN 202221705243U CN 217858123 U CN217858123 U CN 217858123U
- Authority
- CN
- China
- Prior art keywords
- positioning
- support
- steel pipe
- screw rod
- roundness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a heavy-calibre steel pipe out-of-roundness correcting unit relates to the steel pipe machining field, has solved the problem that current correcting unit was not convenient for transport in the pipeline, has made things convenient for correcting unit's use, and concrete scheme is as follows: the support device comprises a central ring, and a plurality of first support rods and second support rods which are radially inserted into the central ring, wherein the first support rods and the second support rods are symmetrically distributed relative to the horizontal central line of the central ring, and the first support rods are positioned below the horizontal central line; the first support rod consists of a wire aligning screw rod and a first support pipe which are coaxially arranged, one end of the wire aligning screw rod is connected with a positioning nut fixedly arranged on the central ring, and the other end of the wire aligning screw rod is connected with a positioning nut fixedly arranged at the end part of the first support pipe; the second supporting rod is composed of a one-way threaded screw rod and a second supporting pipe which are coaxially arranged, one end of the one-way threaded screw rod is connected with a positioning nut inserted on the center ring, and the other end of the one-way threaded screw rod is connected with a positioning nut inserted at the end part of the second supporting pipe.
Description
Technical Field
The utility model belongs to the technical field of the steel pipe machining technique and specifically relates to a heavy-calibre steel pipe roundness correction device.
Background
The non-roundness of the steel pipe influences the welding work of the steel pipe, the non-roundness of the steel pipe has a certain relation with the caliber of the steel pipe, when the caliber is smaller, the non-roundness of the steel pipe can be in a certain positive correlation, but when the outer diameter of the steel pipe is large enough, the correlation can be reduced, for example, after the large-caliber steel pipe (DN 1000mm-DN3600 mm) is machined, the non-roundness of the pipe in a period of time is within a standard range, but along with the extension of the placement time, the non-roundness of the pipe begins to increase due to the self-weight of the pipe, and the pipe presents an oval-like shape with the upper outer diameter and the lower outer diameter being smaller and the outer diameters of the left side and the right side being larger.
In order to ensure the non-roundness of the end of the steel pipe, the two ends of the steel pipe are required to be matched with steel inner supports, the inner supports can be removed only after the pipeline is backfilled or when the strength of encapsulated concrete meets the design requirement, at the moment, inlets and outlets are required to be arranged at intervals of several kilometers at the two ends of the pipeline, and the convenience of transportation inside the pipeline is required to be considered when the inner supports are removed.
The inventor discovers that the existing large-diameter steel pipe out-of-roundness correction device is of an integrated structure mostly for ensuring the roundness adjustment accuracy and the use convenience, and the device can not be detached into parts for storage although being convenient to use, so that the device is not convenient for transportation in a pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art exists, the utility model aims at providing a heavy-calibre steel pipe out-of-roundness correcting unit, the radial cartridge of first bracing piece and second bracing piece is on the centre ring, wherein, first bracing piece utilizes the screw rod drive, can drive the whole lift of correcting unit, the adjustment of second bracing piece position has been made things convenient for, and simultaneously, a positioning nut for fixing a position, drive the second bracing piece is unset to set up, can be quick carry out the second bracing piece plug while still can utilize positioning bolt to guarantee the axiality of second bracing piece and locating hole, correcting unit's split has been made things convenient for, the problem of current steel pipe out-of-roundness correcting unit be not convenient for in the pipeline transportation has been solved.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
in a first aspect, an embodiment of the present invention provides a device for correcting out-of-roundness of a large-diameter steel pipe, including a center ring, and a plurality of first support rods and second support rods radially inserted into the center ring, wherein the first support rods and the second support rods are symmetrically distributed with respect to a horizontal center line of the center ring, and the first support rods are located below the horizontal center line;
the first support rod consists of a wire aligning screw rod and a first support pipe which are coaxially arranged, one end of the wire aligning screw rod is connected with a positioning nut fixedly arranged on the central ring, and the other end of the wire aligning screw rod is connected with a positioning nut fixedly arranged at the end part of the first support pipe; the second support rod consists of a one-way threaded screw rod and a second support tube which are coaxially arranged, one end of the one-way threaded screw rod is connected with a positioning nut inserted on the central ring, and the other end of the one-way threaded screw rod is connected with a positioning nut inserted at the end part of the second support tube.
As a further implementation manner, a plurality of positioning holes for installing positioning nuts are arranged on the center ring at intervals along the circumferential direction of the center ring, each positioning hole is composed of a first through hole and a second through hole which are coaxially arranged, and the diameter of each first through hole is larger than that of each second through hole.
As a further implementation manner, the positioning nut is composed of a nut main body and a positioning boss which are coaxially arranged, the outer diameter of the nut main body is larger than that of the positioning boss, and the positioning boss is inserted into the first through hole.
As a further implementation manner, the outer diameter of the positioning boss is the same as the diameter of the first through hole, and the inner diameter of the positioning boss is respectively the same as the diameter of the second through hole and the inner diameter of the nut body.
As a further implementation manner, the outer diameter of the positioning boss is the same as the inner diameter of the first supporting tube and the second supporting tube.
As a further implementation, the pair of lead screws have opposite-handed threads.
As a further implementation mode, supporting plates are fixedly arranged at the contact ends of the first supporting tube, the second supporting tube and the steel tube.
As a further implementation manner, the first support rods and the second support rods are in one-to-one correspondence and are coaxially arranged.
As a further implementation mode, a protrusion assisting the rotation of the screw rod is fixedly arranged at the middle position of the screw rod.
As a further implementation, the length of the first supporting rod is the same as the length of the second supporting rod.
Above-mentioned the utility model has the advantages as follows:
1) The utility model discloses first bracing piece utilizes the screw rod drive to silk, can drive the whole lift of correcting unit, has made things convenient for the adjustment of second bracing piece position, simultaneously, is used for the not fixed setting of set nut of location, drive second bracing piece, can be quick carry out the plug with the second bracing piece, has made things convenient for correcting unit's split, makes correcting unit be convenient for more accomodate and transport in the pipeline.
2) The utility model discloses be equipped with the location boss on the set nut, but the location boss plug-in dress is in the locating hole and first stay tube, the second stay tube of counter bore form, and the external diameter of location boss is the same with the diameter of first through-hole, the internal diameter of first stay tube, second stay tube, has effectively guaranteed the axiality of locating hole and bracing piece, avoids appearing the skew in bracing piece installation, the accommodation process, has guaranteed the even atress of steel pipe.
3) The utility model discloses set up on the screw rod and be used for supplementary screw rod pivoted arch, not only be convenient for to the regulation of screw rod, still avoided the damage to the screw.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic view illustrating a usage state of a device for correcting out-of-roundness of a large-diameter steel pipe according to one or more embodiments of the present invention;
fig. 2 is a schematic diagram of an overall structure of a device for correcting out-of-roundness of a large-diameter steel pipe according to one or more embodiments of the present invention;
fig. 3 is a schematic diagram of a center ring according to one or more embodiments of the present invention;
fig. 4 is a schematic structural view of a centering ring used in conjunction with a retaining nut in accordance with one or more embodiments of the present invention;
fig. 5 is a schematic structural view of a first support rod connected to a center ring according to one or more embodiments of the present invention;
fig. 6 is a schematic structural view of a second support rod coupled to a center ring according to one or more embodiments of the present invention;
in the figure: the space or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
wherein, 1, a central ring; 2. a unidirectional thread screw; 3. a first support tube; 4. a second support tube; 5. a support plate; 6. positioning a nut; 7. a screw rod is aligned; 8. a first positioning hole; 9. a second positioning hole; 10. a steel pipe; 11. a first through hole; 12. a second through hole; 13. a nut body; 14. and (5) positioning the boss.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Just as the background art introduces, the out-of-roundness correcting unit of current heavy-calibre steel pipe, in order to guarantee its circularity and use convenience, most formula structure as an organic whole, though convenient to use can not dismantle into spare part and accomodate, the problem of the transportation in the pipeline of being not convenient for, for solving above-mentioned problem, the utility model provides an out-of-roundness correcting unit of heavy-calibre steel pipe.
Example 1
The utility model discloses an among the typical embodiment, as shown in fig. 1-6, provide a heavy-calibre steel pipe out-of-roundness correcting unit, include centre ring 1 and can dismantle a plurality of bracing pieces that set up on the centre ring, wherein, the bracing piece sets up along centre ring 1's hoop interval.
As shown in fig. 3, the center ring 1 is a circular ring structure, the center ring 1 is provided with a plurality of positioning holes at intervals along the circumferential direction thereof, the number of the positioning holes is even, the positioning holes are symmetrically arranged by taking the horizontal center line of the center ring 1 as a reference, specifically, the positioning holes are divided into a first positioning hole 8 and a second positioning hole 9, wherein the first positioning hole 8 is located below the horizontal center line of the center ring 1, the second positioning hole 9 is located above the horizontal center line of the center ring 1, and the first positioning hole 8 and the second positioning hole 9 are arranged in a one-to-one correspondence and opposite manner.
Six positioning holes are arranged in the embodiment, wherein three first positioning holes 8 and three second positioning holes 9 are arranged, and the first positioning holes 8 and the second positioning holes 9 are arranged in an up-down opposite mode.
The number of the supporting rods is the same as that of the positioning holes, wherein the supporting rods are divided into first supporting rods and second supporting rods, the number of the first supporting rods is the same as that of the second supporting rods, the overall length of the first supporting rods is the same as that of the second supporting rods, the first supporting rods and the second supporting rods are radially inserted into the center ring 1, the first supporting rods are arranged in the first positioning holes 8, the second supporting rods are arranged in the second positioning holes 9, and the first supporting rods and the second supporting rods are in one-to-one correspondence and are coaxially arranged.
The first positioning hole 8 and the second positioning hole 9 are both in counter bore-shaped structures, the first positioning hole 8 and the second positioning hole 9 penetrate through the center ring 1, the first positioning hole 8 and the second positioning hole 9 are both formed by a first through hole 10 and a second through hole 11, the diameter of the first through hole 10 is larger than that of the second through hole 11, and the first through hole 10 and the second through hole 11 are coaxially arranged.
The first positioning hole 8 and the second positioning hole 9 are both matched with the positioning nut 6, as shown in fig. 4, the positioning nut 6 is composed of a nut main body 13 and a positioning boss 14 which are coaxially arranged, wherein the outer diameter of the nut main body 13 is larger than the outer diameter of the positioning boss 14, the inner diameter of the nut main body 13 and the inner diameter of the positioning boss 14 are both the same as the diameter of the adjusting rod, the nut main body 12 and the positioning boss 13 are both provided with internal threads, the outer diameter of the positioning boss 13 is the same as the diameter of the first through hole 10, the length of the positioning boss 13 is the same as the depth of the first through hole 10, the positioning boss 13 is inserted into the first through hole 10, and the inner diameter of the positioning boss 13 is the same as the diameter of the second through hole 11.
Through the arrangement, the coaxiality of the positioning nut 6 and the positioning hole is ensured by the cooperation of the positioning boss 13 and the first through hole 10 of the positioning nut 4, the coaxiality of the adjusting rod, the positioning nut 6 and the positioning hole is ensured by the aid of the second through hole 11, and the supporting rod is prevented from being deviated in the adjusting process so as to ensure uniform stress of the steel pipe 9.
The first supporting rod and the second supporting rod are composed of an adjusting rod and a supporting tube which are coaxially arranged, wherein the adjusting rod is arranged in the positioning hole and plays a role in adjusting the length of the supporting tube, and the supporting tube is fixedly provided with a supporting plate 5 at the end part in contact with the steel tube 9 and used for increasing the contact area with the inner wall of the steel tube 9 and ensuring that the stress of the steel tube 9 is even.
As shown in fig. 5, the adjusting rod on the first supporting rod is a screw rod 7, the screw rod 7 has opposite threads, the positioning nut 6 is fixedly arranged in the first positioning hole 8 in a welding manner, the end of the first supporting tube 3 on the first supporting rod is also fixedly provided with a positioning nut 6, one end of the screw rod 7 is in threaded fit with the positioning nut 6 on the first positioning hole 8, the other end of the screw rod is in threaded fit with the positioning nut 6 on the first supporting tube 3, and therefore when the screw rod 7 is rotated, the center ring 1 and the first supporting tube 3 on the first supporting rod can be driven to synchronously move in opposite directions or oppositely move, so that the adjusting speed is increased.
The internal diameter of the first supporting tube 3 is the same as the external diameter of the positioning boss 14, and the external diameter of the first supporting tube 3 is the same as the external diameter of the nut main body 13, so that the positioning boss 14 can be inserted into the first supporting tube 3 and ensure the coaxiality of the first supporting tube 3, the wire aligning screw rod 7 and the first positioning hole 8.
It can be understood that, in order to facilitate the rotation of the lead screw 7 without damaging the thread, a protrusion may be fixedly disposed at the middle position of the lead screw 7, and the protrusion may be an annular protrusion or a protrusion similar to a handle, and may be specifically selected according to actual requirements.
As shown in fig. 6, the adjusting rod on the second supporting rod is a one-way threaded screw rod 2, the one-way threaded screw rod 2 has one-way threads along the axial direction thereof, the positioning nut 6 is disposed in the second positioning hole 9, the end of the second supporting tube 4 on the second supporting rod is also provided with a positioning nut 6, one end of the one-way threaded screw rod 2 is in threaded fit with the positioning nut 6 on the second positioning hole 9, and the other end is in threaded fit with the positioning nut 6 on the second supporting tube 4.
The inner diameter of the second support pipe 4 is the same as the outer diameter of the positioning boss 14, and the outer diameter of the second support pipe 4 is the same as the outer diameter of the nut body 13, so that the positioning boss 14 can be inserted into the second support pipe 4 and ensure the coaxiality of the second support pipe 4, the one-way threaded screw rod 2 and the second positioning hole 9.
It should be noted that the positioning nut 6 is not fixedly connected with the second positioning hole 9 and the second support tube 4, so as to facilitate the removal of the one-way threaded screw rod 2 and the second support tube 4.
The specific working principle is as follows:
calculating the inner diameter according to the outer diameter and the wall thickness of the steel pipe 10, calculating the distance to be adjusted between two positioning nuts 6 on the same supporting rod according to the outer diameter of the center ring 1, the wall thickness of the supporting plate 5, the length of the steel pipe 10 and the thickness of the positioning nuts 6, and recording;
assembling first support rods on a flat ground outside a steel pipe 10, connecting all the assembled first support rods with positioning nuts 6 welded on corresponding first positioning holes 8, adjusting two positioning nuts 6 on a pair of screw rods 7 to the minimum distance, and placing the positioning nuts at positions, where the inner wall of the steel pipe 10 needs to be installed, on the steel pipe;
connecting a second support rod at the middle position with a second positioning hole 9, and adjusting the distance between two positioning nuts 6 on the one-way threaded screw rod 2 to the calculated length after installation;
adjusting the screw rod 7 on the first support rod at the middle position by using a wrench, starting to round the upper and lower positions, and ensuring that the first support rod and the second support rod at the two sides are not contacted with the inner wall of the steel pipe 10 in the adjusting process;
when the inner diameter of the steel pipe 10 is adjusted to the theoretical or calculated inner diameter, the adjustment of the first support rod at the middle position is stopped;
installing second supporting rods on the left side and the right side, and respectively adjusting the distance between two positioning nuts 6 corresponding to the second supporting rods on the left side and the right side to the calculated length;
adjusting the screw rod pairs 7 on the first supporting rods at the left side and the right side by using a wrench, starting to round the upper left part, the lower right part, the upper right part, the lower left part and the lower left part, and stopping when the distance between the two positioning nuts 6 on the corresponding screw rod pairs 7 is adjusted to the theoretical length;
and measuring the inner diameter values of the steel pipes at three positions by using the ruler, calculating whether the out-of-roundness meets the standard requirement, and if not, performing targeted adjustment.
The disassembly step is opposite to the installation step, the second support rods on the left side and the right side are firstly disassembled, then the second support rods in the middle position are disassembled, and finally all the first support rods are disassembled.
Because the set nut 6 on the second bracing piece is not fixed setting, can directly make the screw rod move to the inside of centre ring 1 through twisting one-way screw thread screw rod 2, can directly take off second stay tube 4 from one-way screw thread screw rod 2 after the inner wall separation of second stay tube 4 and steel pipe 10, need not to twist, the dismantlement process is convenient, can fall correcting unit after the dismantlement of second bracing piece is accomplished, and then carry out the dismantlement of first bracing piece, thereby make the structure that correcting unit split is spare part, the device has made things convenient for taking and shifting in the pipeline.
It should be noted that the above calculation process adopts a conventional calculation means, and the specific calculation process and result are not described herein in detail.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The device for correcting the out-of-roundness of the large-diameter steel pipe is characterized by comprising a center ring, and a plurality of first support rods and second support rods which are radially inserted into the center ring, wherein the first support rods and the second support rods are symmetrically distributed relative to the horizontal center line of the center ring, and the first support rods are positioned below the horizontal center line;
the first support rod consists of a wire aligning screw rod and a first support pipe which are coaxially arranged, one end of the wire aligning screw rod is connected with a positioning nut fixedly arranged on the central ring, and the other end of the wire aligning screw rod is connected with a positioning nut fixedly arranged at the end part of the first support pipe; the second supporting rod is composed of a one-way threaded screw rod and a second supporting pipe which are coaxially arranged, one end of the one-way threaded screw rod is connected with a positioning nut inserted on the center ring, and the other end of the one-way threaded screw rod is connected with a positioning nut inserted at the end part of the second supporting pipe.
2. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 1, wherein a plurality of positioning holes for mounting positioning nuts are formed in the center ring at intervals in the circumferential direction, the positioning holes are formed by a first through hole and a second through hole which are coaxially arranged, and the diameter of the first through hole is larger than that of the second through hole.
3. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 2, wherein the positioning nut is composed of a nut main body and a positioning boss which are coaxially arranged, the outer diameter of the nut main body is larger than that of the positioning boss, and the positioning boss is inserted into the first through hole.
4. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 3, wherein an outer diameter of the positioning boss is the same as a diameter of the first through hole, and an inner diameter of the positioning boss is the same as a diameter of the second through hole and an inner diameter of the nut body, respectively.
5. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 3, wherein the outer diameter of the positioning boss is the same as the inner diameters of the first support pipe and the second support pipe.
6. The device for correcting the out-of-roundness of the large-caliber steel pipe according to claim 1, wherein the pair of threaded rods are provided with threads with opposite screw directions.
7. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 1, wherein support plates are fixedly arranged at the ends of the first support pipe, the second support pipe, which are in contact with the steel pipe.
8. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 1, wherein the first support rod and the second support rod are coaxially arranged in a one-to-one correspondence.
9. The device for correcting the out-of-roundness of the large-caliber steel pipe according to claim 1, wherein a protrusion for assisting the rotation of the screw is fixedly arranged at the middle position of the screw.
10. The device for correcting the out-of-roundness of the large-diameter steel pipe according to claim 1, wherein the length of the first supporting rod is the same as that of the second supporting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221705243.1U CN217858123U (en) | 2022-07-04 | 2022-07-04 | Non-roundness correcting device for large-diameter steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221705243.1U CN217858123U (en) | 2022-07-04 | 2022-07-04 | Non-roundness correcting device for large-diameter steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217858123U true CN217858123U (en) | 2022-11-22 |
Family
ID=84099554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221705243.1U Active CN217858123U (en) | 2022-07-04 | 2022-07-04 | Non-roundness correcting device for large-diameter steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217858123U (en) |
-
2022
- 2022-07-04 CN CN202221705243.1U patent/CN217858123U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104128815B (en) | Tool for rounding barrel | |
| CN106522998B (en) | Longitudinal positioning and connecting device for underground engineering support arch centering and construction method | |
| CN202894421U (en) | Tube wall drill fixture | |
| CN202655402U (en) | Device for adjusting roundness of penstock and supporting penstock | |
| CN217858123U (en) | Non-roundness correcting device for large-diameter steel pipe | |
| CN201970227U (en) | Supporting clamp for correcting circular barrel | |
| CN110102602B (en) | Barrel rounding device | |
| CN213561276U (en) | Kiln barrel section tool for barrel lathe machining | |
| CN102152259A (en) | Support clamp for correcting round barrel | |
| CN214304739U (en) | Simple fixer for quickly mounting harness cord suspender expansion bolt | |
| CN212048666U (en) | Anti-deformation device for large-diameter pipeline opening | |
| CN211396851U (en) | Cement bin support frame mounting structure | |
| CN203795932U (en) | Spray tower cylinder support device | |
| CN110238682B (en) | Heavy-load cross bracing mechanism | |
| CN218191806U (en) | Roundness correction device for large-diameter thin-wall low-pressure steel pipe pipeline | |
| CN215846810U (en) | Pipe and flange perpendicularity correcting device | |
| CN217032391U (en) | Coaxiality measuring device for large-sized cylinder | |
| CN211991970U (en) | Self-centering stop connection structure's reducing cover | |
| CN206160087U (en) | Tube sheet for boiler based on portable pipeline installation device | |
| CN219588420U (en) | Internal support structure for preventing deformation of clara pipe | |
| CN220673308U (en) | Double-wall type high-strength PVC cable protection tube | |
| CN216190314U (en) | Tower drum lifting appliance | |
| CN110173148B (en) | Universal attachment spherical branch node connector for lattice type concrete filled steel tube wind power tower | |
| CN220971192U (en) | Pressure steel pipe welding correction tool | |
| CN217475203U (en) | Device capable of simultaneously installing multiple inner tower support rings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |