CN112496092A - Flexible quick-opening device and flexible quick-opening method for straightening roller of steel pipe straightener - Google Patents
Flexible quick-opening device and flexible quick-opening method for straightening roller of steel pipe straightener Download PDFInfo
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- CN112496092A CN112496092A CN202011481610.XA CN202011481610A CN112496092A CN 112496092 A CN112496092 A CN 112496092A CN 202011481610 A CN202011481610 A CN 202011481610A CN 112496092 A CN112496092 A CN 112496092A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 72
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 49
- 239000000523 sample Substances 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
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Abstract
The invention discloses a flexible quick-opening device and a flexible quick-opening method for a straightening roller of a steel pipe straightener, which solve the problem of large impact and vibration when the straightening roller of the existing straightener is opened and closed; an annular boss (11) is arranged on the bottom surface of an inner cavity of the hydraulic cylinder body (6), an annular groove (12) is arranged on the lower bottom surface of the quick-opening hydraulic cylinder piston (7), a hydraulic oil cavity (14) is arranged between the lower bottom surface of the quick-opening hydraulic cylinder piston (7) on the inner side of the annular boss (11) and the lower bottom surface of the inner cavity of the hydraulic cylinder body (6), the inner side end of the oil inlet and return channel (9) is communicated with the annular groove (12), and a hydraulic pump (10) is connected to the outer side end of the oil inlet and return channel (9); an inner oil inlet and outlet annular port (13) of a hydraulic oil chamber (14) is arranged between the inner vertical surface of the annular groove (12) and the inner vertical surface of the annular boss (11). The failure rate caused by impact shock is greatly reduced.
Description
Technical Field
The invention relates to seamless steel tube production equipment, in particular to a quick opening device of a steel tube straightening machine.
Background
At present, in the production of seamless steel pipes, the degree of curvature of steel pipes after hot rolling or heat treatment and finishing is large, the requirement of finished steel pipes on the straightness standard cannot be met, straightening is carried out through a roller type straightener, each straightening roller of the roller type straightener is connected with a quick opening device of the straightening roller, and the quick opening device has the main function that after the head of the straightened steel pipe enters the center position of the straightening roller, the straightening roller is pressed inwards to be closed by the quick opening device of the straightening roller, and then the steel pipe is straightened; before the tail of the steel pipe enters the center of the straightening roller, the quick opening device of the straightening roller lifts the straightening roller outwards to open the straightening roller. When the roller type straightener straightens the petroleum pipe or the large-caliber thin-wall steel pipe with two thickened ends, the quick opening device of the straightening roller lifts the straightening roller outwards to open or presses the straightening roller inwards to close, and the stroke is large, generally about 30 mm; the existing quick opening device for the straightening roller adopts a standard piston or plunger type hydraulic cylinder, high-pressure oil is injected into or flows out of an inner cavity of the piston to realize the mutual movement between the piston and a cylinder body, the piston is fixed on a support, the cylinder body is connected with the straightening roller, the speed and the pressure of the quick opening device are not adjustable and controllable in the process of driving the straightening roller to open or close, the impact force is large when the straightening roller is in contact with a steel pipe, when the straightening roller is opened in place, the impact force of the cylinder body with the straightening roller and the support for fixing the piston is also large, the vibration force of a system pipeline is large, the oil leakage phenomenon is easy to occur, and the failure rate of equipment is high due to large impact vibration.
Disclosure of Invention
The invention provides a flexible quick-opening device and a flexible quick-opening method for a straightening roller of a steel pipe straightener, and solves the technical problem that the straightening roller of the existing straightener has large impact vibration when being opened and closed.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is as follows: the size of the annular oil inlet channel formed by matching between the piston in the hydraulic cylinder of the quick opening mechanism and the inner cavity of the cylinder body is changed to change the oil mass entering or flowing out of the hydraulic cylinder in unit time, thereby realizing the following steps: when the cylinder body drives the straightening roller to be opened from the straightening position, the oil amount flowing out of the hydraulic cylinder in unit time is smaller, the annular oil inlet channel is enlarged in the subsequent ascending stage of the straightening roller, so that the oil amount flowing out of the hydraulic cylinder in unit time is increased, and when the straightening roller is close to be opened in place, the annular oil inlet channel is reduced, so that the oil amount flowing out of the hydraulic cylinder in unit time is reduced; when the cylinder body drives the straightening roller to be pressed downwards from an opening position and closed, the annular oil inlet channel is made smaller, in the subsequent pressing process, the annular oil inlet channel is made larger, and when the straightening roller is closed in place, the annular oil inlet channel is made smaller; the oil quantity entering the hydraulic cylinder in unit time is directly changed through the change of the oil inlet annular channel of the oil cylinder, so that the opening process of slow opening-fast opening-slow opening when the straightening roller is opened and the closing process of slow closing-fast closing-slow closing when the straightening roller is closed are realized, the impact of the straightening roller on a steel pipe and the impact on a frame are greatly reduced, and the flexible opening and flexible closing of the fast opening mechanism are realized.
A flexible quick-opening device of a straightening roller of a steel pipe straightener comprises a left upright and a right upright which are arranged in parallel, a top cross beam is fixedly connected between the top end of the left upright and the top end of the right upright, a piston connecting lead screw is hung on the top cross beam, a quick-opening hydraulic cylinder piston is connected at the lower end of the piston connecting lead screw and movably arranged in an inner cavity of a hydraulic cylinder body, a straightening roller mounting seat is fixedly connected on the lower bottom surface of the hydraulic cylinder body, the straightening roller is arranged on the straightening roller mounting seat, an annular boss is arranged on the bottom surface of the inner cavity of the hydraulic cylinder body, an annular groove is arranged on the lower bottom surface of the quick-opening hydraulic cylinder piston, the annular boss and the annular groove are movably sleeved together, a hydraulic oil cavity is arranged between the lower bottom surface of the quick-opening hydraulic cylinder piston inside the annular boss and the lower bottom surface of the inner cavity of the hydraulic cylinder body, the hydraulic cylinder body is provided with an oil inlet and return channel, the inner side end of the oil inlet and return channel is communicated with the annular groove, and the outer side end of the oil inlet and return channel is connected with a hydraulic pump; an oil inlet ring port and an oil outlet ring port of the hydraulic oil chamber are arranged between the inner vertical surface of the annular groove and the inner vertical surface of the annular boss, and an oil inlet ring port and an oil outlet ring port are arranged between the outer vertical surface of the annular boss and the outer vertical surface of the annular groove; the upper end of the inner vertical surface of the annular boss is provided with an annular inward bulge, the lower end of the inner vertical surface of the annular groove is provided with an annular outward bulge, and the lower end of the outer vertical surface of the annular groove is provided with an annular inclined outward gap.
The quick-opening hydraulic cylinder piston position sensor is arranged on the lower bottom surface of the inner cavity of the hydraulic cylinder body, the feeler lever is connected to the quick-opening hydraulic cylinder piston position sensor, a feeler lever through hole is formed in the center of the lower bottom surface of the quick-opening hydraulic cylinder piston, a magnetic ring is arranged on the feeler lever through hole, the feeler lever is movably arranged in the feeler lever through hole after penetrating through the magnetic ring, and the quick-opening hydraulic cylinder piston position sensor is electrically connected with the hydraulic pump.
A flexible quick-opening method of a flexible quick-opening device of a straightening roll of a steel pipe straightener is characterized by comprising the following steps:
when the straightening roll works in a state of straightening a steel pipe to be straightened, hydraulic oil is filled in a hydraulic oil cavity, at the moment, an annular inward bulge and an annular outward bulge are matched together to form a narrow oil inlet and outlet annular opening at the inner side, at the moment, a hydraulic pump works to pump out the hydraulic oil filled in the hydraulic oil cavity, and as the oil inlet and outlet annular opening at the inner side is narrow at the moment, the hydraulic oil flowing out from the narrow oil inlet and outlet annular opening at the inner side in a unit time is small, so that the hydraulic cylinder body drives the straightening roll to slowly rise, and the flexible opening of the straightening roll during initial opening is realized; the annular inward bulge and the annular outward bulge are staggered along with the rising of the hydraulic cylinder body, so that the annular port of the inner oil inlet and outlet ring is widened, the hydraulic oil flowing out through the annular port of the inner oil inlet and outlet ring in unit time is enlarged, the hydraulic cylinder body is accelerated to rise, after the upper end of the outer vertical surface of the annular boss passes through the annular inclined outward notch arranged at the lower end of the outer vertical surface of the annular groove, the outer oil inlet and outlet ring formed by the upper end of the outer vertical surface of the annular boss and the upper end of the outer vertical surface of the annular groove is narrowed, the hydraulic oil flowing out through the outer oil inlet and outlet ring in unit time is reduced, the rising speed of the hydraulic cylinder body is slowed, and the impact vibration of the straightening roller driven by the;
when the straightening roller starts to be pressed downwards to be closed, at the moment, an outer oil inlet and outlet annular opening formed by the upper end of the outer vertical surface of the annular boss and the upper end of the outer vertical surface of the annular groove is narrower, so that less hydraulic oil enters the hydraulic oil cavity from the hydraulic pump in unit time, the hydraulic cylinder body drives the straightening roller to be pressed downwards slowly, the impact vibration to the rack is reduced, after the upper end of the outer vertical surface of the annular boss enters an annular inclined outward notch arranged at the lower end of the outer vertical surface of the annular groove, the outer oil inlet and outlet annular opening is widened, so that the hydraulic oil entering the hydraulic oil cavity from the hydraulic pump in unit time is increased, and the hydraulic cylinder body drives the straightening roller to be pressed downwards in an accelerated manner; when the hydraulic cylinder body is pressed down to align the annular inward bulge and the annular outward bulge, the annular port of the inner oil inlet and outlet ring is narrowed, so that the hydraulic oil entering the hydraulic oil cavity through the annular port of the inner oil inlet and outlet ring in unit time is reduced, the hydraulic cylinder body is slowly pressed down, and the hydraulic cylinder body drives the straightening roller to flexibly contact the straightened steel pipe.
The invention has simple structure and reliable control, realizes the flexible opening and closing of the straightening roller, greatly reduces the impact vibration of the straightening roller to the straightened steel pipe and the frame, has stable operation, and greatly reduces the failure rate caused by the impact vibration.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram showing the relationship between the quick-opening hydraulic cylinder piston 7 and the hydraulic cylinder block 6 when the straightening roll of the present invention is opened from the position of the straightening steel pipe;
fig. 3 is a partial enlarged view at a in fig. 2;
FIG. 4 is a diagram of the relationship between the quick-opening hydraulic cylinder piston 7 and the hydraulic cylinder 6 after the straightening roll of the present invention is opened in place;
FIG. 5 is a partial enlarged view of FIG. 4 at B;
FIG. 6 is a diagram showing the relationship between the quick-opening hydraulic cylinder piston 7 and the hydraulic cylinder 6 when the straightening roll of the present invention is pressed down and closed;
FIG. 7 is a partial enlarged view at C in FIG. 6;
fig. 8 is a schematic view of the structure of the hydraulic cylinder block 6 of the present invention;
fig. 9 is a schematic structural view of the quick-opening hydraulic cylinder piston 7 of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a flexible quick-opening device of a straightening roller of a steel pipe straightener comprises a left upright post 1 and a right upright post 2 which are arranged in parallel, a top cross beam 3 is fixedly connected between the top end of the left upright post 1 and the top end of the right upright post 2, a piston connecting lead screw 8 is hung on the top cross beam 3, a quick-opening hydraulic cylinder piston 7 is connected at the lower end of the piston connecting lead screw 8, the quick-opening hydraulic cylinder piston 7 is movably arranged in an inner cavity of a hydraulic cylinder body 6, a straightening roller mounting seat 5 is fixedly connected on the lower bottom surface of the hydraulic cylinder body 6, a straightening roller 4 is arranged on the straightening roller mounting seat 5, an annular boss 11 is arranged on the bottom surface of the inner cavity of the hydraulic cylinder body 6, an annular groove 12 is arranged on the lower bottom surface of the quick-opening hydraulic cylinder piston 7, the annular boss 11 is movably sleeved with the annular groove 12, a part between the lower bottom surface of the quick-opening hydraulic cylinder piston 7 inside the annular boss 11 and the lower bottom surface of the, a hydraulic oil cavity 14 is arranged, an oil inlet and return channel 9 is arranged on the hydraulic cylinder body 6, the inner side end of the oil inlet and return channel 9 is communicated with the annular groove 12, and the outer side end of the oil inlet and return channel 9 is connected with a hydraulic pump 10; an inner oil inlet and outlet annular port 13 of a hydraulic oil chamber 14 is arranged between the inner vertical surface of the annular groove 12 and the inner vertical surface of the annular boss 11, and an outer oil inlet and outlet annular port 15 is arranged between the outer vertical surface of the annular boss 11 and the outer vertical surface of the annular groove 12; an annular inward bulge 17 is arranged at the upper end of the inner vertical surface of the annular boss 11, an annular outward bulge 16 is arranged at the lower end of the inner vertical surface of the annular groove 12, and an annular inclined outward gap 18 is arranged at the lower end of the outer vertical surface of the annular groove 12.
A quick-opening hydraulic cylinder piston position sensor 19 is arranged on the lower bottom surface of an inner cavity of the hydraulic cylinder body 6, a probe rod 20 is connected onto the quick-opening hydraulic cylinder piston position sensor 19, a probe rod through hole 21 is arranged at the center of the lower bottom surface of the quick-opening hydraulic cylinder piston 7, a magnetic ring 22 is arranged on the probe rod through hole 21, the probe rod 20 is movably arranged in the probe rod through hole 21 after penetrating through the magnetic ring 22, and the quick-opening hydraulic cylinder piston position sensor 19 is electrically connected with the hydraulic pump 10.
A flexible quick-opening method of a flexible quick-opening device of a straightening roll of a steel pipe straightener is characterized by comprising the following steps:
when the straightening roll 4 works in a state of straightening a steel pipe to be straightened, hydraulic oil is filled in a hydraulic oil cavity 14, at the moment, an annular inward bulge 17 and an annular outward bulge 16 are matched together to form a narrow inner side oil inlet and outlet annular port 13, at the moment, a hydraulic pump 10 works to pump out the hydraulic oil filled in the hydraulic oil cavity 14, and as the inner side oil inlet and outlet annular port 13 is narrow at the moment, the hydraulic oil flowing out through the narrow inner side oil inlet and outlet annular port 13 in unit time is small, so that a hydraulic cylinder body 6 drives the straightening roll 4 to slowly rise, and the flexible opening of the straightening roll during initial opening is realized; along with the rising of the hydraulic cylinder body 6, the annular inward bulge 17 and the annular outward bulge 16 are staggered, so that the inner side oil inlet and outlet annular port 13 is widened, the hydraulic oil flowing out through the inner side oil inlet and outlet annular port 13 in unit time is enlarged, the hydraulic cylinder body 6 is accelerated to rise, after the upper end of the outer side vertical surface of the annular boss 11 passes through the annular inclined outward notch 18 arranged at the lower end of the outer side vertical surface of the annular groove 12, the outer side oil inlet and outlet annular port 15 formed by the upper end of the outer side vertical surface of the annular boss 11 and the upper end of the outer side vertical surface of the annular groove 12 is narrowed, the hydraulic oil flowing out through the outer side oil inlet and outlet annular port 15 in unit time is reduced, the rising speed of the hydraulic cylinder body 6 is reduced, and the impact vibration of the hydraulic cylinder body;
when the straightening roller 4 starts to be pressed downwards and closed, at the moment, an outer oil inlet and outlet annular port 15 formed by the upper end of the outer vertical surface of the annular boss 11 and the upper end of the outer vertical surface of the annular groove 12 is narrow, so that less hydraulic oil enters the hydraulic oil chamber 14 from the hydraulic pump 10 in unit time, the hydraulic cylinder body 6 drives the straightening roller 4 to be pressed downwards slowly, impact vibration to a rack is reduced, after the upper end of the outer vertical surface of the annular boss 11 enters an annular inclined outward notch 18 arranged at the lower end of the outer vertical surface of the annular groove 12, the outer oil inlet and outlet annular port 15 is widened, so that the hydraulic oil entering the hydraulic oil chamber 14 from the hydraulic pump 10 in unit time is increased, and the hydraulic cylinder body 6 drives the straightening roller 4 to be pressed downwards in an accelerating manner; when the hydraulic cylinder body 6 is pressed down to align the annular inward bulge 17 with the annular outward bulge 16, the inner oil inlet and outlet annular port 13 is narrowed, so that the hydraulic oil entering the hydraulic oil cavity 14 through the inner oil inlet and outlet annular port 13 in unit time is reduced, the hydraulic cylinder body 6 is slowly pressed down, and the hydraulic cylinder body 6 drives the straightening rollers 4 to flexibly contact the steel pipe to be straightened.
When a constant-pressure hydraulic pump 10 charges oil into a hydraulic oil cavity 14 in a hydraulic cylinder through an oil inlet and return channel 9, the charged hydraulic oil presses down a hydraulic cylinder body 6, a probe rod 20 connected to a quick-opening hydraulic cylinder piston position sensor 19 and a magnetic ring 22 arranged on a probe rod through hole 21 move mutually, the quick-opening hydraulic cylinder piston position sensor 19 can send a signal to control the oil charging pressure of the hydraulic pump 10, and when a quick-opening hydraulic cylinder piston 7 runs for 80% of the full stroke from starting to running, the oil charging pressure is reduced to low pressure; when the plunger piston runs from 80% to 100%, the hydraulic pump 10 is gradually pressurized to normal high-pressure working pressure by the pressurization valve, so that the system and the pipeline are prevented from working in a high-pressure state for a long time, the running stability of the equipment is improved, and the failure rate of the equipment is reduced.
Claims (3)
1. A flexible quick-opening device of a straightening roller of a steel pipe straightener comprises a left upright (1) and a right upright (2) which are arranged in parallel, a top cross beam (3) is fixedly connected between the top end of the left upright (1) and the top end of the right upright (2), a piston connecting lead screw (8) is hung on the top cross beam (3), a quick-opening hydraulic cylinder piston (7) is connected at the lower end of the piston connecting lead screw (8), the quick-opening hydraulic cylinder piston (7) is movably arranged in an inner cavity of a hydraulic cylinder body (6), a straightening roller mounting seat (5) is fixedly connected on the lower bottom surface of the hydraulic cylinder body (6), and a straightening roller (4) is arranged on the straightening roller mounting seat (5) and is characterized in that an annular boss (11) is arranged on the bottom surface of the inner cavity of the hydraulic cylinder body (6), and an annular boss is arranged on the lower bottom surface of the quick-opening hydraulic cylinder (7), an annular groove (12) is arranged, the annular boss (11) and the annular groove (12) are movably sleeved together, a hydraulic oil cavity (14) is arranged between the lower bottom surface of the quick-opening hydraulic cylinder piston (7) on the inner side of the annular boss (11) and the lower bottom surface of the inner cavity of the hydraulic cylinder body (6), an oil inlet and return channel (9) is arranged on the hydraulic cylinder body (6), the inner side end of the oil inlet and return channel (9) is communicated with the annular groove (12), and a hydraulic pump (10) is connected to the outer side end of the oil inlet and return channel (9); an inner oil inlet and outlet annular port (13) of a hydraulic oil chamber (14) is arranged between the inner vertical surface of the annular groove (12) and the inner vertical surface of the annular boss (11), and an outer oil inlet and outlet annular port (15) is arranged between the outer vertical surface of the annular boss (11) and the outer vertical surface of the annular groove (12); the upper end of the inner vertical surface of the annular boss (11) is provided with an annular inward bulge (17), the lower end of the inner vertical surface of the annular groove (12) is provided with an annular outward bulge (16), and the lower end of the outer vertical surface of the annular groove (12) is provided with an annular inclined outward gap (18).
2. The flexible quick-opening device of the straightening roll of the steel pipe straightener as claimed in claim 1, wherein a quick-opening hydraulic cylinder piston position sensor (19) is arranged on the lower bottom surface of the inner cavity of the hydraulic cylinder body (6), a probe rod (20) is connected to the quick-opening hydraulic cylinder piston position sensor (19), a probe rod through hole (21) is arranged at the center of the lower bottom surface of the quick-opening hydraulic cylinder piston (7), a magnetic ring (22) is arranged on the probe rod through hole (21), the probe rod (20) is movably arranged in the probe rod through hole (21) after penetrating through the magnetic ring (22), and the quick-opening hydraulic cylinder piston position sensor (19) is electrically connected with the hydraulic pump (10).
3. The flexible quick-opening method of the flexible quick-opening device of the straightening roll of the steel pipe straightener as claimed in claim 1, characterized by the following steps:
when the straightening roll (4) works in a straightening state for a steel pipe to be straightened, hydraulic oil is filled in a hydraulic oil cavity (14), at the moment, an annular inward bulge (17) and an annular outward bulge (16) are matched together to form a narrow inner side oil inlet and outlet annular port (13), at the moment, a hydraulic pump (10) works to pump out the hydraulic oil filled in the hydraulic oil cavity (14), and as the inner side oil inlet and outlet annular port (13) is narrow at the moment, the hydraulic oil flowing out from the narrow inner side oil inlet and outlet annular port (13) in a unit time is small, so that a hydraulic cylinder body (6) drives the straightening roll (4) to slowly rise, and the flexible opening of the straightening roll during initial opening is realized; along with the rising of the hydraulic cylinder body (6), the annular inward bulge (17) and the annular outward bulge (16) are staggered, so that the annular port (13) of the oil inlet and outlet on the inner side is widened, the hydraulic oil flowing out from the annular port (13) of the oil inlet and outlet on the inner side in unit time is enlarged, the hydraulic cylinder body (6) rises at an accelerated speed, after the upper end of the outer vertical surface of the annular boss (11) passes through the annular inclined outward gap (18) arranged at the lower end of the outer vertical surface of the annular groove (12), an outer side oil inlet and outlet annular port (15) formed by the upper end of the outer side vertical surface of the annular boss (11) and the upper end of the outer side vertical surface of the annular groove (12) is narrowed, so that hydraulic oil flowing out of the outer side oil inlet and outlet annular port (15) in unit time is reduced, the rising speed of the hydraulic cylinder body (6) is reduced, and the impact vibration of the straightening roller (4) driven by the hydraulic cylinder body (6) to a rack is reduced;
when the straightening roller (4) starts to be pressed downwards for closing, at the moment, an outer oil inlet and outlet annular opening (15) formed by the upper end of the outer vertical surface of the annular boss (11) and the upper end of the outer vertical surface of the annular groove (12) is narrow, so that less hydraulic oil enters the hydraulic oil chamber (14) from the hydraulic pump (10) in unit time, the hydraulic cylinder body (6) drives the straightening roller (4) to be pressed downwards slowly, the impact vibration to the rack is reduced, after the upper end of the outer vertical surface of the annular boss (11) enters an annular inclined outward notch (18) arranged at the lower end of the outer vertical surface of the annular groove (12), the outer oil inlet and outlet annular opening (15) becomes wider, and the hydraulic oil entering the hydraulic oil chamber (14) from the hydraulic pump (10) in unit time is increased, so that the hydraulic cylinder body (6) drives the straightening roller (4) to accelerate the pressing downwards; when the hydraulic cylinder body (6) is pressed down to align the annular inward bulge (17) and the annular outward bulge (16), the inner oil inlet and outlet annular opening (13) is narrowed, so that the hydraulic oil entering the hydraulic oil cavity (14) through the inner oil inlet and outlet annular opening (13) in unit time is reduced, the hydraulic cylinder body (6) is slowly pressed down, and the hydraulic cylinder body (6) drives the straightening roller (4) to flexibly contact the straightened steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011481610.XA CN112496092B (en) | 2020-12-16 | 2020-12-16 | Flexible quick-opening device and flexible quick-opening method for straightening roller of steel pipe straightener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011481610.XA CN112496092B (en) | 2020-12-16 | 2020-12-16 | Flexible quick-opening device and flexible quick-opening method for straightening roller of steel pipe straightener |
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| Publication Number | Publication Date |
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| CN112496092A true CN112496092A (en) | 2021-03-16 |
| CN112496092B CN112496092B (en) | 2024-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011481610.XA Active CN112496092B (en) | 2020-12-16 | 2020-12-16 | Flexible quick-opening device and flexible quick-opening method for straightening roller of steel pipe straightener |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623723A (en) * | 2009-07-03 | 2010-01-13 | 成都莱克冶金机械设备制造有限公司 | Horizontal type gas straighter |
| CN101773940A (en) * | 2009-12-23 | 2010-07-14 | 太原通泽重工有限公司 | Hold-down balancing mechanism of rotary frame overall replacing three-roll pipe mill |
| CN102327931A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Pressurized overload protection device of straightening machine |
| WO2015192602A1 (en) * | 2014-06-18 | 2015-12-23 | 国家电网公司 | Hydraulic operating mechanism for high pressure switch and hydraulic working cylinder thereof |
| CN214184702U (en) * | 2020-12-16 | 2021-09-14 | 太原通泽重工有限公司 | Flexible quick opening device for straightening roller of steel pipe straightening machine |
-
2020
- 2020-12-16 CN CN202011481610.XA patent/CN112496092B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623723A (en) * | 2009-07-03 | 2010-01-13 | 成都莱克冶金机械设备制造有限公司 | Horizontal type gas straighter |
| CN101773940A (en) * | 2009-12-23 | 2010-07-14 | 太原通泽重工有限公司 | Hold-down balancing mechanism of rotary frame overall replacing three-roll pipe mill |
| CN102327931A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Pressurized overload protection device of straightening machine |
| WO2015192602A1 (en) * | 2014-06-18 | 2015-12-23 | 国家电网公司 | Hydraulic operating mechanism for high pressure switch and hydraulic working cylinder thereof |
| CN214184702U (en) * | 2020-12-16 | 2021-09-14 | 太原通泽重工有限公司 | Flexible quick opening device for straightening roller of steel pipe straightening machine |
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| CN112496092B (en) | 2024-10-01 |
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