CN203448470U - Structure of pre-bending device - Google Patents
Structure of pre-bending device Download PDFInfo
- Publication number
- CN203448470U CN203448470U CN201320420927.1U CN201320420927U CN203448470U CN 203448470 U CN203448470 U CN 203448470U CN 201320420927 U CN201320420927 U CN 201320420927U CN 203448470 U CN203448470 U CN 203448470U
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- Prior art keywords
- roll
- bending device
- axle sleeve
- shaft
- roll shaft
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Abstract
The utility model belongs to the technical field of machine design, relates to the structural design of ERW units, in particular to the structural design of pre-bending devices in the ERW units, and discloses a pre-bending device. The pre-bending device comprises an upper pre-bending device and a lower pre-bending device, and the upper pre-bending device is located above the lower pre-bending device. The lower pre-bending device comprises a roll shaft, a main mill roll, shaft sleeves, a plurality of mill rolls and bearings, wherein the main mill roll is a hollow roll and installed on the roll shaft; the shaft sleeves are symmetrically installed on the roll shaft and located at the left end and the right end of the main mill roll; the number of the mill rolls is even, and the mill rolls are hollow and symmetrically installed on the shaft sleeves; the bearings are arranged in the mill rolls and fixed to the shaft sleeves. According to the novel pre-bending device, the bearings are additionally installed in the mill rolls on the two sides, so that flexibility of relative rotation between the mill rolls and the roll shaft is improved, and the problem of mill roll burst is solved; due to flexible rotation between the mill rolls and the roll shaft, resistance when a steel plate drives the mill rolls to rotate is reduced, and meanwhile the problem that the steel plate is scratched by the mill rolls is also solved.
Description
Technical field
The utility model belongs to mechanical designing technique field, relate to ERW(High-frequency Electric Resistance Welded Steel Pipe, high frequency sews resistance welding steel pipe) structural design of unit, relates in particular to the structural design of pre-bending device in ERW unit.
Background technology
ERW be by hot-rolled coil after forming machine moulding, coil of strip is deformed into round and smooth cylindric, utilize kelvin effect and the kindred effect of high frequency electric, make the fusing of pipe edge heating, under certain extruding force effect, the fusing two edges of cylinder fuse together, through the cooling welding effect that just reaches, form high-quality steel pipe.In the output of ， world welded still pipe, ERW output accounts for 80% left and right of welded tube total amount at present.
In ERW production process, basic working procedure is moulding and welding, and its moulding can be divided into thick moulding and precisive shaped again, the part that pre-bending device is thick shaped device.
Tradition pre-bending device comprises pre-bending device and lower pre-bending device, Fig. 1 has shown the lower pre-bending device of traditional pre-bending device, it is comprised of 5 rolls that contact with steel plate, wherein the first roll 101 and the second roll 102 be arranged on be respectively fixed on roll shaft 104 and with the axle sleeve 106 of roll shaft without relative motion on; The 3rd roll 103 is fixed on roll shaft 104, with roll shaft 104 without relative motion.Upper pre-bending device is positioned at the top of lower pre-bending device, comprise roll shaft, be arranged on the axle sleeve of roll shaft and be arranged on roll shaft and axle sleeve on several rolls, the roll integral body of upper pre-bending device is convex, the spill forming with the first roll 101 of lower pre-bending device, the second roll 102 and the 3rd roll 103 matches, under the convex roll of upper pre-bending device and the spill matching, between pre-bending device roll, there is gap, steel plate 105 pre-bending in this gap.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of structure of New Pre bending apparatus, the explosion problem occurring to solve traditional pre-bending device roll.
(2) technical scheme
For realizing above function, the utility model provides novel a kind of pre-bending device, it is characterized in that, it comprises pre-bending device and lower pre-bending device, described upper pre-bending device is positioned at the top of lower pre-bending device, comprise roll shaft, be arranged on the axle sleeve of roll shaft and be arranged on roll shaft and axle sleeve on several rolls, described lower pre-bending device comprises:
Roll shaft;
King roller, described king roller is hollow roll, is arranged on described roll shaft;
Axle sleeve, its symmetry is arranged on roll shaft, is positioned at the two ends, left and right of king roller;
Several rolls, described roll is even number, and is hollow roll, symmetrical is arranged on axle sleeve;
Bearing, described bearing is arranged in roll, is fixed on described axle sleeve.
Preferably, each the roll inside being arranged on axle sleeve arranges a bearing.
Preferably, be arranged on a roll on axle sleeve one-body molded, be arranged on corresponding axle sleeve, described integrated roll inside arranges bearing, and described bearing is arranged on axle sleeve.
Preferably, the bearing of described integrated roll inside is arranged on described roll shaft.
(3) beneficial effect
The utility model provides New Pre bending apparatus, in the roll on both sides, has installed bearing additional, has improved counterrotating flexibility between roll and roll shaft, has solved the problem of roll explosion; Flexible due to what rotate between roll and roller bearing, steel plate drives the resistance of roll rotation to reduce, and has also solved the scuffing problem of roll to steel plate simultaneously.
Accompanying drawing explanation
Fig. 1 is the lower pre-bending device profile of tradition;
Fig. 2 is the lower pre-bending device profile of the utility model embodiment 1;
Fig. 3 is the lower pre-bending device profile of the utility model embodiment 2.
In figure, 1: roll shaft; 2: king roller; 3: steel plate; 4: axle sleeve; 51: the first rolls; 52: the second rolls; 53: left roll; 54: right roll; 6: bearing.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, and unrestricted scope of the present utility model.
The utility model provides a kind of pre-bending device, it comprises pre-bending device and lower pre-bending device, and described upper pre-bending device is positioned at the top of lower pre-bending device, comprise roll shaft, be arranged on the axle sleeve of roll shaft and be arranged on roll shaft and axle sleeve on several rolls, as shown in Figure 2, lower pre-bending device comprises:
Roll shaft 1;
Axle sleeve 4, its symmetry is arranged on roll shaft 1, is positioned at the two ends, left and right of king roller 2;
Several rolls, described roll is even number, and is hollow roll, symmetrical is arranged on axle sleeve 4;
Bearing 6, described bearing 6 is arranged in roll, is fixed on described axle sleeve 4.
The utility model provides New Pre bending apparatus, and roll inside arranges bearing, has improved counterrotating flexibility between roll and roll shaft, has solved the problem of roll explosion; Flexible due to what rotate between roll and roller bearing, steel plate drives the resistance of roll rotation to reduce, and has also solved the scuffing problem of roll to steel plate simultaneously.
Preferably, for making between roll and roll shaft counterrotating flexibility better, each the roll inside being arranged on axle sleeve all arranges a bearing, and described bearing is fixed on axle sleeve;
Solving under the prerequisite of roll explosion and steel plate scuffing problem, for simplifying the structure of pre-bending device, make it easy for installation, axle sleeve 4 can omit, and corresponding roll is thereon formed in one, and inside arranges bearing, and bearing is fixedly mounted on roll shaft 1.
Embodiment 1
Figure 2 shows that the lower pre-bending device profile of the pre-bending device of the embodiment of the present invention 1, it comprises roll shaft 1, king roller 2, axle sleeve 4, the first roll 51, the second roll 52 and bearing 6; Wherein, king roller 2 is arranged on the centre position of roll shaft 1; Axle sleeve 4 is two, and symmetrical is arranged on roll shaft 1, and is positioned at the left and right sides of king roller 2; The first roll 51 and the second roll 52 are two, and symmetrical is arranged on axle sleeve 4; And the first roll 51 is positioned on axle sleeve 4 one end away from king roller 1, the second roll 52 is positioned on axle sleeve 4 one end near king roller 1; The inside of the first roll 51 and the second roll 52 arranges bearing 6, and bearing 6 is fixedly mounted on axle sleeve 4.
Steel plate 3 enters after pre-bending device, and its upper surface is pressed close to the roll of upper pre-bending device (prior art, in Fig. 2 do not show), its lower surface and the first roll 51, the second roll 52 and king roller 2 with contact.At the first roll 51 and the second roll 52 places, steel plate 5 lower surfaces and roll close contact, and there is deformation under the extruding of upper and lower pre-bending device, reach the object of pre-bending.
Due at the first roll 51 and the second roll 52 places, steel plate 5 lower surfaces and roll close contact, the first roll 51 and the second roll 52 increase with the frictional force of steel plate 5, this frictional force drives the first roll 51 and the second roll 52 to rotate around axle sleeve 4, and axle sleeve 4 is fixed on roll shaft 1, the first roll 51 and the second roll 52 will rotate around roll shaft 1, the first roll 51 and the inner bearing 6 arranging of the second roll 52 have reduced the frictional force between the first roll 51 and the second roll 52 and axle sleeve 4, make the first roll 1 and the second roll 3 with respect to roll shaft 1 flexible rotating, roll and roll shaft frictional force have been solved compared with roll shaft explosion problem large and that cause.
The first roll 51 and the second roll 52, with respect to the flexible rotating between roll shaft 1, have reduced the resistance of steel plate drive roll rotation, have reduced the scuffing between steel plate and roll, have improved the quality of ERW pipe.
Figure 3 shows that the lower pre-bending device profile of the pre-bending device of the embodiment of the present invention 2.In order to simplify the structure of pre-bending device, in the present embodiment, lower pre-bending device comprises roll shaft 1, king roller 2, left roll 53, right roll 54 and bearing 6, wherein, left roll 53, king roller 2 and right roll 54 are hollow roll, order is arranged on roll shaft 1, and bearing 6 is arranged on left roll 53 and right roll 54 inside, is arranged on roll shaft 1.
In the present embodiment, the roll that is positioned at king roller 2 left and right sides is formed in one, left roll 53 and right roll 54, arrange bearing 6 in the inside of left roll 53 and right roll 54, and bearing 6 is fixed on roll shaft 1.
In the present embodiment, bearing 6 be arranged so that left roll 53 and right roll 54 are with respect to roll shaft 1 flexible rotating, solved roll and roll shaft frictional force compared with roll shaft explosion large and that cause and the scuffing problem of steel plate.
In the present embodiment, lower pre-bending device is reduced to 3 rolls by original 5 rolls that contact with steel plate, has saved the axle sleeve between roll and roll shaft, has simplified the overall structure of pre-bending device.
The pre-bending device that the utility model provides installs bearing additional in roll, has improved counterrotating flexibility between roll and roll shaft, has solved the problem of roll explosion; Flexible due to what rotate between roll and roller bearing, steel plate drives the resistance of roll rotation to reduce, and has also solved the scuffing problem of roll to steel plate simultaneously;
Further, the pre-bending device that the utility model provides, simple in structure, easy for installation.
It should be noted that same bearing also can be used in the roll of pre-bending device inner, to improve the flexibility of rotating between the roll of upper pre-bending device and roll shaft.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (4)
1. a pre-bending device, it is characterized in that, it comprises pre-bending device and lower pre-bending device, and described upper pre-bending device is positioned at the top of lower pre-bending device, comprise roll shaft, be arranged on the axle sleeve of roll shaft and be arranged on roll shaft and axle sleeve on several rolls, described lower pre-bending device comprises:
Roll shaft (1);
King roller (2), described king roller (2) is hollow roll, is arranged on described roll shaft (1);
Axle sleeve (4), it is upper that its symmetry is arranged on roll shaft (1), is positioned at the two ends, left and right of king roller (2);
Several rolls, described roll is even number, and is hollow roll, symmetrical is arranged on axle sleeve (4);
Bearing (6), described bearing (6) is arranged in roll, is fixed on described axle sleeve (4).
2. pre-bending device according to claim 1, is characterized in that, each the roll inside being arranged on axle sleeve (4) arranges a bearing (6).
3. pre-bending device according to claim 2, it is characterized in that, the roll being arranged on an axle sleeve (4) is one-body molded, is arranged on corresponding axle sleeve (4), described integrated roll inside arranges bearing (6), and described bearing (6) is arranged on axle sleeve (4).
4. pre-bending device according to claim 3, is characterized in that, the bearing (6) of described integrated roll inside is arranged on described roll shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420927.1U CN203448470U (en) | 2013-07-15 | 2013-07-15 | Structure of pre-bending device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420927.1U CN203448470U (en) | 2013-07-15 | 2013-07-15 | Structure of pre-bending device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203448470U true CN203448470U (en) | 2014-02-26 |
Family
ID=50128374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320420927.1U Expired - Lifetime CN203448470U (en) | 2013-07-15 | 2013-07-15 | Structure of pre-bending device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203448470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787931A (en) * | 2018-06-22 | 2018-11-13 | 浙江新世纪机械制造有限公司 | The shaping machine set of doorframe molding machine |
| CN116141024A (en) * | 2023-04-21 | 2023-05-23 | 太原科技大学 | Medium longitudinal submerged arc welded pipe production equipment and technology |
-
2013
- 2013-07-15 CN CN201320420927.1U patent/CN203448470U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787931A (en) * | 2018-06-22 | 2018-11-13 | 浙江新世纪机械制造有限公司 | The shaping machine set of doorframe molding machine |
| CN116141024A (en) * | 2023-04-21 | 2023-05-23 | 太原科技大学 | Medium longitudinal submerged arc welded pipe production equipment and technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191119 Address after: 214183 Jiangsu Province, Wuxi city Huishan District Qi street ERON Road No. 15 Patentee after: Jiangsu Yulong Steel Pipe Technology Co.,Ltd. Address before: 214183, No. 15 ERON Road, jade Town, Jiangsu, Wuxi Patentee before: JIANGSU YULONG STEEL PIPE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |