CN214490054U - Arc grinding device for straight welded pipe - Google Patents
Arc grinding device for straight welded pipe Download PDFInfo
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- CN214490054U CN214490054U CN202120711090.0U CN202120711090U CN214490054U CN 214490054 U CN214490054 U CN 214490054U CN 202120711090 U CN202120711090 U CN 202120711090U CN 214490054 U CN214490054 U CN 214490054U
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Abstract
The utility model discloses a straight welded pipe arc grinding device, which comprises a control device, a lifting mechanism, a pseudo-arc grinding head seat and a pseudo-arc grinding head; the lifting mechanism is connected with the quasi-arc grinding head seat; the arc-like grinding head comprises an arc-like grinding head bracket, a grinding motor, a constant-pressure profiling device and an abrasive belt; three guide wheels and a belt tensioning wheel are arranged on the quasi-arc grinding head bracket, and the centers of the three guide wheels form a triangle; the abrasive belt is wound on the three guide wheels, and the abrasive belt tensioning wheel is tightly pressed on the outer side of the abrasive belt; the grinding motor is arranged on the quasi-arc grinding head bracket and is connected with one of the three guide wheels through a transmission mechanism; the quasi-arc grinding head seat is connected with the quasi-arc grinding head bracket through the constant-pressure profiling device; the lifting mechanism, the grinding motor and the constant-pressure profiling device are respectively connected with the control device. The utility model discloses simple structure, convenient operation, the utility model discloses can be stable, reliable, intelligently carry out full length or local coping to the butt weld pipe outer weld.
Description
Technical Field
The utility model relates to a transversal joint pipe deep-processing technology field specifically is a transversal joint pipe circular arc grinding device.
Background
With the increasing progress of welded pipe technology, the welded pipe technology puts more precise requirements on weld reinforcement of the straight welded pipe. The weld reinforcement is clearly regulated and required in API 5L pipeline steel pipe specifications, and high-specification steel pipes such as oil, gas and marine pipes further require that the weld reinforcement is not more than 2.5 mm. The damage of overhigh outer weld reinforcement of the straight welded pipe:
the extra height of the outer welding seam of 1 is too high, and stress corrosion cracks are easily formed at the welding toe. Stress concentration at the weld toe part easily induces the generation of weld toe cracks, and further increases the service risk of the pipeline.
2, the extra height of the external welding seam is too high, which increases the corrosion prevention cost. If epoxy resin glass cloth is adopted for corrosion prevention during corrosion prevention operation, the extra height of the outer welding line is large, so that the welding toe is not easy to be pressed firmly. Meanwhile, the higher the welding seam is, the thicker the anticorrosive coating is, and the anticorrosive cost is increased because the thickness of the anticorrosive coating is measured and calculated by taking the top point of the external welding seam as a reference according to standard regulation.
3, the excessive height of the outer welding seam influences the pipe shape of the whole pipe body after hydraulic pressure expanding. When the whole pipe body of the longitudinal submerged arc welded pipe is expanded by water pressure, the steel pipe is wrapped by the left and right external dies with the inner cavity consistent with the expanding size of the steel pipe. Therefore, the residual height of the welding seam is too large, the shearing stress borne by the welding seam is large when the diameter is expanded, and the phenomenon of small straight edges is easy to occur on two sides of the welding seam.
The welding seam grinding treatment, the degradation use or the scrapping treatment can be reduced or scrapped only by manual work for the steel pipe with the excessive height of the outer welding seam exceeding the standard, and the manual grinding has the defects of high labor intensity, large dust occupational hazard, low labor efficiency and high proficiency of workers. How to overcome the defects of low labor efficiency, high labor intensity and high risk in the prior art becomes a problem to be solved urgently for technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a simple structure, degree of automation is high, work efficiency is high, high stability, can improve the welded tube quality, reduces workman intensity of labour's straight welded tube circular arc grinding device.
In order to solve the above problems, the utility model adopts the following technical scheme:
a straight welded pipe circular arc grinding device comprises a control device, a lifting mechanism, a pseudo circular arc grinding head seat and a pseudo circular arc grinding head; the lifting mechanism is connected with the quasi-arc grinding head seat and can drive the quasi-arc grinding head seat to lift; the quasi-arc grinding head comprises a quasi-arc grinding head bracket, a grinding motor, a constant-pressure profiling device and an abrasive belt; three guide wheels and a belt tensioning wheel are arranged on the quasi-arc grinding head bracket, the centers of the three guide wheels form a triangle, and one bottom edge of the triangle is horizontally arranged; the abrasive belt is wound on the three guide wheels, and the abrasive belt tensioning wheel is tightly pressed on the outer side of the abrasive belt; the grinding motor is arranged on the quasi-arc grinding head bracket and is connected with one of the three guide wheels through a transmission mechanism; the quasi-arc grinding head seat is connected with the quasi-arc grinding head bracket through the constant-pressure profiling device; the lifting mechanism, the grinding motor and the constant-pressure profiling device are respectively connected with the control device.
In the arc grinding device for the straight welded pipe, the limiting device is installed at the bottom of the arc grinding head support, the vision sensor is arranged on the arc grinding head, and the limiting device and the vision sensor are respectively connected with the control device.
In the arc grinding device for the straight welded pipe, the lifting mechanism comprises a vertical beam, a motor and a simulated arc grinding head seat; the motor is arranged at the top of the vertical beam, an output shaft of the motor is connected with a screw rod, and the screw rod is vertically arranged; the vertical beam is provided with a linear guide rail, the simulated arc grinding head seat is provided with a nut and a chute, the chute is embedded on the linear guide rail, the nut is in threaded connection with the screw rod, and the motor is connected with the control device.
In the arc grinding device for the straight welded pipe, the constant-pressure copying device comprises a hydraulic cylinder; the pseudo-arc grinding head seat is provided with a guide groove which is vertically arranged; the arc-like grinding head bracket is provided with a slide block, and the slide block is embedded in the guide groove; one end of the hydraulic cylinder is hinged to the pseudo-arc grinding head seat, the other end of the hydraulic cylinder is hinged to the pseudo-arc grinding head support, and a hydraulic system of the hydraulic cylinder is connected with the control device.
The utility model has the advantages that:
the utility model has simple structure and convenient operation, and realizes the polishing treatment of the whole body or the local outer welding line of the butt welded pipe; the utility model discloses can be stable, reliably, intelligently carry out full length or local coping to the outer welding seam of butt welded pipe, make the required precision that reaches the welding seam remaining height, effectively reduce staff's intensity of labour and danger, improved production efficiency.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a structural diagram of the quasi-circular arc grinding head with the tension wheel removed.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, the utility model comprises a control device, a lifting mechanism, a pseudo-arc grinding head seat and a pseudo-arc grinding head; the lifting mechanism comprises a vertical beam 1, a motor 2 and a pseudo-arc grinding head seat 3; the motor 2 is arranged at the top of the vertical beam 1, and an output shaft of the motor 2 is connected with a lead screw which is vertically arranged. The vertical beam 1 is provided with a linear guide rail, the simulated arc grinding head seat 3 is provided with a nut and a sliding chute, the sliding chute is embedded on the linear guide rail, the nut is in threaded connection with the screw rod, and the motor 2 is connected with the control device. The motor 2 rotates to drive the screw rod to rotate, and then the nut on the screw rod drives the quasi-arc grinding head seat to lift.
The quasi-arc grinding head comprises a quasi-arc grinding head bracket 6, a grinding motor 4, a constant-pressure profiling device 5 and an abrasive belt 63; three guide wheels 61 and a belt tension wheel 62 are arranged on the quasi-arc grinding head support 6, the centers of the three guide wheels 61 form a triangle, and one bottom side of the triangle is horizontally arranged. The sanding belt 63 is wrapped around the three guide wheels 61, and the sanding belt tensioning wheel 62 presses the outside of the sanding belt 63. The grinding motor 4 is arranged on the quasi-arc grinding head support 6, the grinding motor 4 is connected with one of the three guide wheels 62 through a transmission mechanism, the guide wheel 62 is driven to rotate, and then the abrasive belt 63 is driven to rotate, so that the butt weld grinding is realized. The quasi-arc grinding head seat 3 is connected with a quasi-arc grinding head support 6 through a constant pressure copying device 5.
The constant-pressure copying device 5 comprises a hydraulic cylinder; the pseudo-arc grinding head seat 3 is provided with a guide groove 32, and the guide groove 32 is vertically arranged; the quasi-arc grinding head bracket 6 is provided with a slide block 31, and the slide block 31 is embedded in the guide groove 32; one end of the hydraulic cylinder is hinged on the pseudo-arc grinding head seat 3, the other end of the hydraulic cylinder is hinged with the pseudo-arc grinding head support 6, and the hydraulic systems of the motor 2, the grinding motor 4 and the hydraulic cylinder are respectively connected with the control device. The bottom of the quasi-arc grinding head support is provided with a limiting device, the quasi-arc grinding head is provided with a vision sensor, and the limiting device and the vision sensor are respectively connected with a control device.
Claims (4)
1. The utility model provides a straight welded pipe circular arc grinding device which characterized by: comprises a control device, a lifting mechanism, a simulated arc grinding head seat and a simulated arc grinding head; the lifting mechanism is connected with the quasi-arc grinding head seat and can drive the quasi-arc grinding head seat to lift; the quasi-arc grinding head comprises a quasi-arc grinding head bracket, a grinding motor, a constant-pressure profiling device and an abrasive belt; three guide wheels and a belt tensioning wheel are arranged on the quasi-arc grinding head bracket, the centers of the three guide wheels form a triangle, and one bottom edge of the triangle is horizontally arranged; the abrasive belt is wound on the three guide wheels, and the abrasive belt tensioning wheel is tightly pressed on the outer side of the abrasive belt; the grinding motor is arranged on the quasi-arc grinding head bracket and is connected with one of the three guide wheels through a transmission mechanism; the quasi-arc grinding head seat is connected with the quasi-arc grinding head bracket through the constant-pressure profiling device; the lifting mechanism, the grinding motor and the constant-pressure profiling device are respectively connected with the control device.
2. The circular arc grinding device for the longitudinal welded pipe according to claim 1, wherein: the bottom of the quasi-arc grinding head support is provided with a limiting device, the quasi-arc grinding head is provided with a vision sensor, and the limiting device and the vision sensor are respectively connected with a control device.
3. The circular arc grinding device for the longitudinal welded pipe according to claim 1, wherein: the lifting mechanism comprises a vertical beam, a motor and a simulated arc grinding head seat; the motor is arranged at the top of the vertical beam, an output shaft of the motor is connected with a screw rod, and the screw rod is vertically arranged; the vertical beam is provided with a linear guide rail, the simulated arc grinding head seat is provided with a nut and a chute, the chute is embedded on the linear guide rail, the nut is in threaded connection with the screw rod, and the motor is connected with the control device.
4. The circular arc grinding device for the longitudinal welded pipe according to claim 3, wherein: the constant-pressure copying device comprises a hydraulic cylinder; the pseudo-arc grinding head seat is provided with a guide groove which is vertically arranged; the arc-like grinding head bracket is provided with a slide block, and the slide block is embedded in the guide groove; one end of the hydraulic cylinder is hinged to the pseudo-arc grinding head seat, the other end of the hydraulic cylinder is hinged to the pseudo-arc grinding head support, and a hydraulic system of the hydraulic cylinder is connected with the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711090.0U CN214490054U (en) | 2021-04-08 | 2021-04-08 | Arc grinding device for straight welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711090.0U CN214490054U (en) | 2021-04-08 | 2021-04-08 | Arc grinding device for straight welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214490054U true CN214490054U (en) | 2021-10-26 |
Family
ID=78202197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120711090.0U Active CN214490054U (en) | 2021-04-08 | 2021-04-08 | Arc grinding device for straight welded pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214490054U (en) |
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2021
- 2021-04-08 CN CN202120711090.0U patent/CN214490054U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 411300 East of Lianhua Road and South of Xinyang Road, Shaoshan High-tech Industrial Development Zone, Xiangtan City, Hunan Province Patentee after: Xiangtan Huajin Heavy Equipment Technology Co.,Ltd. Address before: 411300 East of Lianhua Road and South of Xinyang Road, Shaoshan High-tech Industrial Development Zone, Xiangtan City, Hunan Province Patentee before: Xiangtan Huajin Heavy Loading Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |