CN104815846A - Adjustable pull rod of core bar support frame - Google Patents
Adjustable pull rod of core bar support frame Download PDFInfo
- Publication number
- CN104815846A CN104815846A CN201510180029.7A CN201510180029A CN104815846A CN 104815846 A CN104815846 A CN 104815846A CN 201510180029 A CN201510180029 A CN 201510180029A CN 104815846 A CN104815846 A CN 104815846A
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- China
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- pull rod
- pull bar
- adjusting nut
- thread
- internal thread
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Abstract
The invention discloses an adjustable pull rod of a core bar support frame. The adjustable pull rod (1) is characterized by consisting of a first pull rod (2), a second pull rod (3), an adjusting nut (4) and a fixed bolt (5), wherein the first pull rod (2) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the other end is a projected external thread; the second pull rod (3) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the center of the other end is an internal thread; the adjusting nut (4) is an internal/external thread structure, is in fit connection with the external thread of the first pull rod (2) through the internal thread, is in fit connection with the internal thread of the second pull rod (3) through the external thread, and is positioned on the second pull rod (3) through the fixed bolt (5); internal and external threads of the adjusting nut (4) have the same rotating direction and different pitches; and when the adjusting nut (4) rotates by one lap, the length of the pull rod is changed by a pitch difference, so that the purpose of finely adjusting the length of the pull rod can be achieved, and the precise centering of three support rollers of the core bar support frame is realized.
Description
Technical field:
The present invention relates to PQF retained mandrel Continuous Seamless Tube Mill technical field, specifically a kind of adjustable drawbar of plug frames.
Background technology:
PQF retained mandrel Continuous Seamless Tube Mill technology is the tube-rolling technique technology grown up the mid-90 in 20th century, obtains tremendous development, represent the state-of-the-art of the technological design of current seamless steel tube rolling mill group and manufacture in 21 century.Plug frames is the key equipment of PQF tandem rolling tube machine, is furnished with 2 plug frames in 5 frame PQF tandem mills altogether, for support and the guiding of plug.Hollow billet by before and after rolling terminates, the core rod support roller in plug bracing frame is in " embracing " lives the position of plug, is that plug leads and centering; When hollow billet arrives this frames soon, core rod support roller is opened, for hollow billet is given way, until rolling terminates.Due to the various possible reason such as foozle, long term wear, the centering of three backing rolls of plug frames is poor, cause that the wearing and tearing of plug are uneven, plug friction even impacts PQF breast roller, the inclined wall of hollow forging, will increase the weight of the consumption of tool and mould, increase equipment and fault in production, reduction hollow forging quality above.
Summary of the invention:
The object of the invention is the deficiency overcoming prior art, a kind of adjustable drawbar of plug frames is provided, mainly to solve in the non-adjustable frame caused of existing plug frames pull bar three backing roll centerings poor, cannot effectively support plug and the problem such as guiding.
Technical scheme of the present invention is: the adjustable drawbar of plug frames, and its special character is, adjustable drawbar is made up of the first pull bar, the second pull bar, adjusting nut and set bolt; The first described pull bar is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the other end is the external screw thread protruded, and external thread part is divided into cylindrical; The second described pull bar is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the center of the other end is internal thread; Described adjusting nut is inside and outside silk structure, is connected by the external screw thread of internal thread and the first pull bar, is connected, and is located on the second pull bar by set bolt by the screw-internal thread fit of external screw thread with the second pull bar; The inside and outside silk rotation direction of described adjusting nut is identical, pitch is unequal, often rotates circle pull bar length variations pitch difference.
Compared with the prior art the adjustable drawbar of plug frames of the present invention has outstanding substantive distinguishing features and marked improvement: 1, made into by existing overall pull bar to be made up of two sections of pull bars, two sections of pull bars are connected by an adjusting nut, after by adjusting nut pull bar being adjusted to the length of requirement, with set bolt, adjusting nut is fixed on pull bar again, makes two parts pull bar become as a whole; Adjusting nut is connected with two pull bars respectively by inside and outside silk, and the rotation direction of inside and outside silk is identical, but pitch is unequal, by rotating adjusting nut, adjusts the length of pull bar easily; Difference due to inside and outside silk pitch is 2mm, and adjusting nut often rotates 30 °, and pull bar length variations is only 0.167mm, can reach the object of accurate adjustment pull bar length with this, thus realizes the precise alignment of plug frames three backing rolls; 2, the Adjustment precision of pull bar is high, meets onsite application requirement completely.
Accompanying drawing illustrates:
Fig. 1 is front view of the present invention;
Fig. 2 is the cut-away view of Fig. 1;
Fig. 3 is the CC cut-away view of Fig. 2;
Fig. 4 is the using state schematic diagram that adjustable drawbar of the present invention is arranged on plug frames.
Detailed description of the invention:
In order to Comprehension and Implementation better, provide specific embodiment below in conjunction with accompanying drawing and describe the present invention in detail; Illustrated embodiment, only for explaining the present invention, is not for limiting the scope of the invention.
Embodiment: see Fig. 1,2,3,4, needs to be processed into the first pull bar 2, second pull bar 3, adjusting nut 4 and set bolt 5 according to design; First pull bar 2 is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the other end is the external screw thread protruded, and external thread part is divided into cylindrical, and end is cylindrical; Second pull bar also 3 is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the center of the other end is internal thread; Adjusting nut 4 is inside and outside silk structure, internal thread is M72X4, outer silk is M100X6, be connected by the external screw thread of internal thread and the first pull bar 2, be connected by the screw-internal thread fit of external screw thread with the second pull bar 3, the inside and outside silk rotation direction of adjusting nut 4 is identical, be all dextrorotation, pitch was unequal, when rotating nut 4 one weeks, the length variations of pull bar is the difference of pitch, i.e. 2mm, rotate 30 degree, pull bar length variations is only 0.167mm, realize the fine setting to pull bar with this, thus realize the precise alignment of three backing rolls in plug frames; After pull bar length adjustment is complete, with set bolt 5, adjusting nut 4 is fixed on the second pull bar 3, makes two parts pull bar become the entirety of a rigidity, i.e. adjustable drawbar 1.
The adjustable drawbar of plug frames of the present invention, during assembling, first adjustable drawbar 1 is tentatively adjusted to the length of requirement, again by adjustable drawbar 1 respectively with first connecting rod 7, second connecting rod 8, third connecting rod 9 passes through pinned connection, form a set of lever system, be arranged on frame housing 6, three backing rolls 10 are arranged on first connecting rod 7 respectively, second connecting rod 8, third connecting rod 9 front end, centralising device is used to measure the position of three backing rolls in frame, if the distance of the standard cover of three backing roll distance-measuring devices is inconsistent, the then length of micro-adjustable handle rod, until three backing rolls are consistent with the gap that standard is overlapped, now three backing roll centerings are described, when the running roller of Hydraulic Cylinder first connecting rod 7 lower end, lever system inwardly shrinks, and realizes the support to plug and guiding.
Claims (1)
1. the adjustable drawbar of plug frames, is characterized in that, adjustable drawbar (1) is made up of the first pull bar (2), the second pull bar (3), adjusting nut (4) and set bolt (5); Described the first pull bar (2) is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the other end is the external screw thread protruded, and external thread part is divided into cylindrical; Described the second pull bar (3) is structure as a whole, and one end is the pin shaft hole containing axle sleeve, and the center of the other end is internal thread; Described adjusting nut (4) is inside and outside silk structure, is connected by the external screw thread of internal thread and the first pull bar (2), is connected by the screw-internal thread fit of external screw thread with the second pull bar (3), and by set bolt (5) in the upper location of the second pull bar (3); The inside and outside silk rotation direction of described adjusting nut (4) is identical, pitch is unequal, often rotates circle pull bar length variations pitch difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180029.7A CN104815846A (en) | 2015-04-16 | 2015-04-16 | Adjustable pull rod of core bar support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180029.7A CN104815846A (en) | 2015-04-16 | 2015-04-16 | Adjustable pull rod of core bar support frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104815846A true CN104815846A (en) | 2015-08-05 |
Family
ID=53726460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510180029.7A Pending CN104815846A (en) | 2015-04-16 | 2015-04-16 | Adjustable pull rod of core bar support frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104815846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269876A (en) * | 2016-08-30 | 2017-01-04 | 江苏华菱锡钢特钢有限公司 | A kind of PQF tandem mill unit |
| CN112973561A (en) * | 2021-03-16 | 2021-06-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Molten iron desulfurization equipment and clamping device for rotary desulfurization of molten iron desulfurization equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2031750C1 (en) * | 1992-07-21 | 1995-03-27 | Акционерное общество "Электростальский завод тяжелого машиностроения" | Centering device to tube mill |
| RU2308331C2 (en) * | 2005-12-22 | 2007-10-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Centering roller-type apparatus of tube rolling mill |
| CN201008880Y (en) * | 2007-03-14 | 2008-01-23 | 天津赛瑞机器设备有限公司 | Adjustable five-lever link gear |
| CN201008879Y (en) * | 2007-03-14 | 2008-01-23 | 天津赛瑞机器设备有限公司 | Adjustable five-lever link gear |
| CN202752315U (en) * | 2012-09-17 | 2013-02-27 | 太原通泽重工有限公司 | Core rod support device capable of moving out of steel tube rolling lines quickly |
| CN203610412U (en) * | 2013-12-19 | 2014-05-28 | 太原磬泓机电设备有限公司 | Core rod supporting rack suitable for continuous rolling unit |
-
2015
- 2015-04-16 CN CN201510180029.7A patent/CN104815846A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2031750C1 (en) * | 1992-07-21 | 1995-03-27 | Акционерное общество "Электростальский завод тяжелого машиностроения" | Centering device to tube mill |
| RU2308331C2 (en) * | 2005-12-22 | 2007-10-20 | Открытое акционерное общество "Электростальский завод тяжелого машиностроения" | Centering roller-type apparatus of tube rolling mill |
| CN201008880Y (en) * | 2007-03-14 | 2008-01-23 | 天津赛瑞机器设备有限公司 | Adjustable five-lever link gear |
| CN201008879Y (en) * | 2007-03-14 | 2008-01-23 | 天津赛瑞机器设备有限公司 | Adjustable five-lever link gear |
| CN202752315U (en) * | 2012-09-17 | 2013-02-27 | 太原通泽重工有限公司 | Core rod support device capable of moving out of steel tube rolling lines quickly |
| CN203610412U (en) * | 2013-12-19 | 2014-05-28 | 太原磬泓机电设备有限公司 | Core rod supporting rack suitable for continuous rolling unit |
Non-Patent Citations (1)
| Title |
|---|
| 401室: "《精密机械》", 30 June 1974, 北京工业学院出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269876A (en) * | 2016-08-30 | 2017-01-04 | 江苏华菱锡钢特钢有限公司 | A kind of PQF tandem mill unit |
| CN112973561A (en) * | 2021-03-16 | 2021-06-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Molten iron desulfurization equipment and clamping device for rotary desulfurization of molten iron desulfurization equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |