CN202447545U - Diameter expanding type sizing mill for steel pipe end - Google Patents
Diameter expanding type sizing mill for steel pipe end Download PDFInfo
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- CN202447545U CN202447545U CN2011205300786U CN201120530078U CN202447545U CN 202447545 U CN202447545 U CN 202447545U CN 2011205300786 U CN2011205300786 U CN 2011205300786U CN 201120530078 U CN201120530078 U CN 201120530078U CN 202447545 U CN202447545 U CN 202447545U
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Abstract
The utility model relates to a diameter expanding type steel pipe end sizing mill. The diameter expanding type steel pipe end sizing mill is characterized in that a left seat and a right seat are provided with left and right diameter expanding type steel pipe end sizing mills; and the seat of each diameter expanding type steel pipe end sizing mill is provided with a support, the upper part of the support is provided with a diameter expanding oil cylinder and a diameter expanding head driven by the diameter expanding oil cylinder, the diameter expanding oil cylinder comprises a cylinder body, an end cover, a pull rod, a hollow piston, a locking nut and a bolt, and the diameter expanding head comprises a locking nut, a bolt, a lubricating oil channel block, a cone, a conical expansion block, fan-shaped modules, a radial T-shaped key, a conical T-shape key and a fixed flange. The diameter expanding type steel pipe end sizing mill is reasonable in design and compact in structure, can satisfy the sizing of steel pipes with different diameters through controlling the steel pipe end diameter and ellipticity as well as changing different fan-shaped modules, and has the advantages of synchronous diameter expanding operation, stable working performance, good lubrication, high efficiency, easiness for machining and assembly, low manufacture cost, convenience in operation and use of diameter expanding and the like.
Description
Technical field
The utility model belongs to metallurgy industry steel pipe's production process equipment, particularly is applicable to a kind of enlarged diameter type steel tube end part sizing mill that pipe end diameter and ovality carry out the hole enlargement adjustment under the normal temperature.
Background technology
As everyone knows, in the metallurgy industry steel pipe's production, owing to influenced by various objective factors, make the steel tube end part of manufacturing physical dimension occur usually and precision is inconsistent.Make troubles so just for the pipeline installation in some engineering,,, require steel pipe two ends diameter and roundness must reach certain technical requirements in order to guarantee the installation quality of pipeline because dock when connecting at the two ends between the steel pipe in pipeline is installed.In recent years; Occurred multiple expanding machine on the market, through patent retrieval, its patent No. is a kind of steel tube head expanding machine of 0223396.3; Its structure comprises: slide is housed on main frame; On slide, install by portal frame, the hole enlargement unit is connected with oil cylinder, a plurality of module groups that can move radially along disk are set on the support disk of hole enlargement unit through the vertically moving installing rack that is installed on the portal frame; Module groups is fitted with removable die blade; The hole enlargement unit has the polygonal pyramid body on a plurality of inclined-planes, and is corresponding on each and the disk on each inclined-plane and the disk on the polygonal pyramid body, and the small oil tank through each module groups drives to be slidingly matched and realizes the steel tube end part hole enlargement that holds up by carrying roller.Above-mentioned steel tube head expanding machine, though than other expanding machine progress has been arranged, it still exists drawback and weak point:
1, its hole enlargement unit fixedly is to compress through chute of the many groups on the disk and oil cylinder on the polygonal pyramid body, causes complex structure, huge, and it is high to be not easy to processing and assembling and manufacturing cost; Carrying roller at the bottom of its processed steel pipe is fixed in addition, carries out lift adjustment to the center by the hole enlargement main frame, causes hole enlargement main frame poor rigidity, and stability is bad.
2, owing to be the synchronous hole enlargement action of adopting many groups small oil tank of hole enlargement oil cylinder and radial groove, not only Synchronization Control is quite difficult, and can occur each hole enlargement unit action on the contrary can not be synchronous.
3, steel tube end part does not have accurate location, makes hole enlargement length inaccuracy, does not have processed steel pipe centralising device simultaneously, causes the hole enlargement head to be difficult for getting into processed steel duct.
Summary of the invention
The utility model is intended to the shortcoming and defect part that in said method, exists, and provides not only reasonable in design, compact conformation; Can be through accurately controlling pipe end diameter and ovality and ovality; Can also be through changing the steel pipe sizing that different fanlike die blocks satisfies different-diameter, and have synchronous hole enlargement action, stable work in work; Lubricate; Efficient is high, is easy to the processing assembling, and a kind of very easily enlarged diameter type steel tube end part sizing mill is manipulated in low cost of manufacture and hole enlargement.
The purpose of the utility model is to adopt following technical scheme to realize: described enlarged diameter type steel tube end part sizing mill; Comprise left and right sizing mill and carrying roller on the support; It is characterized in that: with the left and right enlarged diameter type steel tube end part sizing mill of installing on the corresponding two left and right supports of processed steel pipe end positions; Described each enlarged diameter type steel tube end part sizing mill is on support, to install bearing, the electronic line slide rail formula feed mechanism of installing between this bearing and support; At bearing top installing hole enlargement oil cylinder and the hole enlargement head through this hole enlargement hydraulic oil cylinder driving; Described hole enlargement oil cylinder is made up of cylinder body, end cap, pull bar, hollow piston, locking nut and bolt; The two ends of described cylinder body connect end cap respectively; The hollow piston of the two ends band cylindrical column of in this cylinder body, packing into, an end cylindrical column of this hollow piston stretches outside end cap, and the other end cylindrical column of this hollow piston stretches in bearing; The pull bar of in hollow piston, packing into, the pull bar outside the hollow piston cylindrical column stretch on the end through locking nut and bolt in to fix; The hole enlargement head that installing is made up of locking nut, bolt, lubricant passage way piece, cone, the bloated piece of the conical surface, fanlike die block, radially-directed slide mechanism, conical surface T shape key, conical surface T shape key and mounting flange on the pull bar section outside this bearing; Be fixed between the end face of mounting flange end face and conical surface account piece on the bearing and be provided with the guide slide mechanism of forming by a plurality of radially T shape keys; The lateral surface of described cone is the cone that is made up of many ribs a plurality of identical isosceles trapezoid conical surfaces; Identical with the conical surface quantity of the cone of many ribs, cone, the conical surface of on the pull bar behind the mounting flange, installing many ribs from inside to outside in regular turn expand piece and fanlike die block; The conical surface contact-making surface of the bloated piece of each conical surface of the cone of described many ribs and the conical surface is provided with the conical surface T shape key that a guiding is slided; The big end of this cone stretches outside fanlike die block, on the pull bar behind the fanlike die block, installs lubricant passage way piece, locking nut and bolt in regular turn; Described lubricant passage way piece one side is communicated with the interior oilhole of pull bar and joins; Oilhole is communicated with and reaches the conical surface in opposite side and the cone, is cushioned the carrying roller of positioning baffle mechanism, hydraulically powered centralising device and motorized adjustment height by hydraulically powered pipe end with corresponding the installing on the ground in processed pipe end position.
The principle of the utility model, operation and characteristics branch are set forth in down:
Because the left and right enlarged diameter type steel tube end part sizing mill of installing on the two left and right supports in the utility model; Described each enlarged diameter type steel tube end part sizing mill is the processing end installing bearing at support, the electronic line slide rail formula feed mechanism that installing is made up of line slideway, guide-track groove, servo feed motor, shaft coupling, leading screw plate body, bearing block, leading screw and nut seat between this bearing and support; And hole enlargement oil cylinder of forming by cylinder body, end cap, pull bar, hollow piston, locking nut and bolt in bearing top installing and the hole enlargement head of forming by locking nut, bolt, lubricant passage way piece, cone, the bloated piece of the conical surface, fanlike die block, radially-directed slide mechanism, conical surface T shape key and mounting flange through this hole enlargement hydraulic oil cylinder driving; In order to ensure the good operate as normal of hole enlargement head in the utility model, adopt by concentrating oil path block and on the conical surface expands the sliding surface of piece, spreading all over the dual lubricating system of solid lubricant new technology; And in the installing of processed steel pipe end dress by the carrying roller of hydraulically powered pipe end buffering positioning baffle mechanism, hydraulically powered centralising device, motorized adjustment height be used for the horizontal step device of processed steel pipe transverse discharging; When hole enlargement is operated; Electronic carrying roller carries processed steel pipe to stopping the location, and centralising device clamps processed steel pipe, and a processed steel pipe and hole enlargement center is caused; Through its electric feeding mechanism accurately; After driving hole enlargement head got in the processed steel pipe, the bloated piece of the loaded ribbon mantle body driving conical surface through its hole enlargement oil cylinder radially dilated with fanlike die block again, realizes the hole enlargement of steel tube head; Accurately control the stroke of hole enlargement oil cylinder simultaneously through magnetostrictive displacement sensor, thereby accurately control tube end diameter and ovality.
The comprehensive above technical scheme of being taked realizes the purpose of the utility model.
Therefore, the utility model is not only reasonable in design, compact conformation; Can be through accurately controlling pipe end diameter and ovality; Can also be through changing the steel pipe sizing that different fanlike die blocks satisfies different-diameter, and have synchronous hole enlargement action, stable work in work; Lubricate; Efficient is high, is easy to the processing assembling, and advantages such as very convenient are manipulated in low cost of manufacture and hole enlargement.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
The utility model has five width of cloth accompanying drawings.Wherein:
Accompanying drawing 1 is the main TV structure sketch map of the specific embodiment of the utility model;
Accompanying drawing 2 be among Fig. 1 the E place analyse and observe enlarged diagram;
Accompanying drawing 3 is along the cutaway view of A-A line among Fig. 2;
Accompanying drawing 4 is along the enlarged diagram of analysing and observe of B-B line among Fig. 2;
Accompanying drawing 5 is to analyse and observe enlarged diagram along the C-C line among Fig. 2.
Among the figure: 1, processed steel pipe, 2, the centering clamp, 3, baffle plate rises the retaining oil cylinder, 4, rise retaining chute baffle plate, 5, cushion cylinder, 6, locking nut; 7, lubricant passage way piece, 8, cone, 9, fanlike die block, 10, T shape key radially, 11, mounting flange, 12, bearing; 13, end cap, 14, the feeding motor, 15, support, 16, line slideway, 17, the centering chute, 18, carrying roller; 19, oilhole, 20, conical surface T shape key, 21, the conical surface piece that expands, 22, pull bar, 23, hollow piston, 24, cylinder body; 25, bolt, 26, bearing block, 27, shaft coupling, 28, screw mandrel, 29, nut seat, 30, rotating shaft; 31, centering oil cylinder, 32, magnetostrictive displacement sensor, 33, kollag, 34, electronic leading screw, 35, connecting rod, 36, traversing step rate.
The specific embodiment
Fig. 1,2,3, shown in 4 the specific embodiment of the utility model; It is the enlarged diameter type steel tube end part sizing mill of in the steel pipe's production process equipment, installing; Comprise left and right sizing mill and carrying roller on the support; It is characterized in that: with the left and right enlarged diameter type steel tube end part sizing mill of installing on the corresponding two left and right supports 15 of processed steel pipe 1 end positions; Described each enlarged diameter type steel tube end part sizing mill is the installing bearing 12 at support 15, the electronic line slide rail formula feed mechanism of installing servomotor between this bearing 12 and support 15; At bearing 12 tops installings hole enlargement oil cylinder and the hole enlargement head through this hole enlargement hydraulic oil cylinder driving; Described hole enlargement oil cylinder is made up of cylinder body 24, end cap 13, pull bar, hollow piston, locking nut and bolt; The two ends of described cylinder body connect end cap respectively; The hollow piston 23 of the two ends band cylindrical column of in this cylinder body 24, packing into; The right-hand member cylindrical column of this hollow piston 23 stretches outside end cap 13; In the bearing 12 outside the end cap 13 of hollow piston 23 left end cylindrical column, the pull bar 22 of in hollow piston 23, packing into draws 22 to stretch on the end through locking nut 6 and bolt 25 in fixing outside hollow piston 23 right-hand member cylindrical column; Pull bar outside this bearing 12 is gone up the hole enlargement head that installing is made up of locking nut 6, bolt 25, lubricant passage way piece 7, cone 8, the bloated piece 21 of the conical surface, fanlike die block 9, radially-directed slide mechanism, conical surface T shape key, conical surface T shape key and mounting flange for 22 sections; Be fixed between the end face of mounting flange 11 end faces and conical surface account piece 21 on the bearing 12 and be provided with the guide slide mechanism of forming by a plurality of radially T shape keys 10, in this specific embodiment by 10 guide slide mechanisms of forming of T shape key 10 radially; The lateral surface of described cone 8 is the cones that are made up of many ribs a plurality of identical isosceles trapezoid conical surfaces; The lateral surface of the cone 8 in this specific embodiment is the cones that are made up of many ribs 10 identical isosceles trapezoid conical surfaces; Identical with the conical surface quantity of the cone 8 of many ribs, cone 8, the conical surface of on the pull bar behind the mounting flange 11 22, installing many ribs from inside to outside in regular turn expand piece 21 and fanlike die block 9; The conical surface contact-making surface of the bloated piece 21 of each conical surface of the cone 8 of described many ribs and the conical surface is provided with the conical surface T shape key 20 that a guiding is slided; The big end of this cone 8 stretches outside fanlike die block 9, on the pull bar behind the fanlike die block 9 22, installs lubricant passage way piece 7, locking nut 6 and bolt 25 in regular turn; Described lubricant passage way piece 7 is communicated with pull bar 22 interior oilholes 19 and joins; Install the carrying roller 18 that cushions positioning baffle mechanism, hydraulically powered centralising device and motorized adjustment height by hydraulically powered pipe end on the ground with corresponding of processed steel pipe 1 tube end position.
Described electric linear slide rail type feed mechanism (as shown in Figure 2) is made up of line slideway 16, guide-track groove, servo feed motor 14, shaft coupling 27, leading screw plate body, bearing block 26, leading screw 28 and nut seat 29; These bearing 12 bottom surfaces are connected fixing with the slide block of line slideway 16; The rail of line slideway is installed on the support 15; With installing diaxon bearing 26 on the corresponding support 15 of this leading screw plate body end positions; Leading screw 28 is installed in this diaxon bearing 26, on the leading screw between the two bearings seat 26, is being screwed nut seat 29, this nut seat 29 is connected on bearing 12 bottom surfaces through screw; Simultaneously, stretch on the axle head outside bearing 26 at this leading screw 28 and be connected with servo feed motor 14 through shaft coupling 27.
Described each radially T shape key 10 be to be fixed on the conical surface through screw to expand on the end face of piece 21, on the end face of mounting flange 11, have the radially T shape keyway that supplies T shape key 10 radially to slide.
Conical surface T shape key 20 (as shown in Figure 4) that described each guiding is slided are fixed on the conical surface through screw and expand on the sliding surface of piece 21, have the axial T shape keyway of the conical surface T shape key 20 that supplies 20 slips of conical surface T shape key on the sliding surface corresponding with cone 8.
Described hydraulically powered pipe end cushions positioning baffle mechanism and is made up of baffle plate hoist cylinder 3, up-down chute baffle plate 4, up-down chute, rotating shaft 30 and buffering oil cylinder 5; In the up-down of processed steel pipe 1 pipe end lateral vertical installing by the up-down chute baffle plate 4 of baffle plate hoist cylinder 3 drivings; Described up-down chute is installed on the support 15 through rotating shaft 30, and it stretches out the cushion cylinder 5 that rod end and up-down chute baffle plate 4 touch mutually the support relative with the up-down chute 15 installings.
The carrying roller 18 of described motorized adjustment height is made up of with connecting rod 35 electronic leading screw 34; Carry processed steel pipe 1 by 18 rotations of motor-driven carrying roller; Drive carrying roller 18 swings through electronic leading screw 34 drive link 35 and go up and down, realize that the center of the processed steel pipe 1 of carrying roller 18 picking-ups is consistent with the center of hole enlargement head.
Described hydraulically powered centralising device (as shown in Figure 3) is made up of centering oil cylinder 31, centering clamp 2 and centering chute 17, at the two centering clamps 2 of the left and right symmetry installing of centering chute by the centering hydraulic oil cylinder driving.
The described conical surface expand on the sliding surface of piece 21 (as shown in Figure 5) spread all over and be provided with several lubricant holes, in described each lubrication prescription hole, annotate solid lubricant 33 through pressing.
The parallel installing magnetostrictive displacement sensor 32 in the outside of described hole enlargement oil cylinder; One end of described magnetostrictive displacement sensor 32 is connected with hollow piston 23 external parts, and the other end of this magnetostrictive displacement sensor 32 is fixed on the corresponding bearing 12 of hole enlargement oil cylinder.
Described processed steel pipe 1 installing is used to process the horizontal step rate 36 of steel pipe transverse discharging.
The above; Be merely the preferable specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; All are familiar with the method personnel in this method field in the utility model disclosed method scope, are equal to replacement or change according to the design of the method scheme of the utility model and the utility model thereof all should be encompassed within the protection domain of the utility model.
Claims (9)
1. enlarged diameter type steel tube end part sizing mill; Comprise left and right sizing mill and carrying roller on the support; It is characterized in that: go up the left and right enlarged diameter type steel tube end part sizing mill of installing with corresponding left and right two supports (15) of processed steel pipe end positions; Described each enlarged diameter type steel tube end part sizing mill is the installing bearing (12) at support (15), the electronic line slide rail formula feed mechanism of installing between this bearing (12) and support (15); At bearing (12) top installing hole enlargement oil cylinder and the hole enlargement head through this hole enlargement hydraulic oil cylinder driving; Described hole enlargement oil cylinder is made up of cylinder body (24), end cap (13), pull bar (22), hollow piston (23), locking nut (6) and bolt (25); The two ends of described cylinder body (24) connect end cap (13) respectively; The hollow piston (23) of the two ends band cylindrical column of in this cylinder body (24), packing into; The one end cylindrical column of this hollow piston (23) stretches outside end cap (13); The other end cylindrical column of this hollow piston (23) stretches in bearing (12); The pull bar (22) of in hollow piston (23), packing into, the pull bar (22) outside hollow piston (23) cylindrical column stretch end and go up through locking nut (6), bolt (25) in fixing; The hole enlargement head that installing is made up of locking nut (6), bolt (25), lubricant passage way piece (7), cone (8), the bloated piece (21) of the conical surface, fanlike die block (9), radially-directed slide mechanism, conical surface T shape key (20) and mounting flange (11) on pull bar (22) section outside this bearing (12); Be fixed between the end face of mounting flange (11) end face and conical surface account piece (21) on the bearing (12) and be provided with the guide slide mechanism of forming by a plurality of radially T shape keys (10); The lateral surface of described cone (8) is the cone (8) that is made up of many ribs a plurality of identical isosceles trapezoid conical surfaces; Identical with the conical surface quantity of the cone (8) of many ribs, cone (8), the conical surface of on the pull bar (22) behind the mounting flange (11), installing many ribs from inside to outside in regular turn expand piece (21) and fanlike die block (9); The conical surface contact-making surface of the bloated piece (21) of each conical surface of the cone of described many ribs (8) and the conical surface is provided with the conical surface T shape key (20) that a guiding is slided; The big end of this cone (8) stretches outside fanlike die block (9), on the pull bar (22) behind the fanlike die block (9), installs lubricant passage way piece (7), locking nut (6) and bolt (25) in regular turn; Described lubricant passage way piece (7) one sides are communicated with the interior oilhole (19) of pull bar (22) and join; Opposite side is communicated with the interior oilhole of cone (8) and reaches the conical surface, with the carrying roller (18) of corresponding installing on the ground of processed steel pipe (1) tube end position by hydraulically powered pipe end buffering positioning baffle mechanism, hydraulically powered centralising device and motorized adjustment height.
2. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: described electric linear slide rail type feed mechanism is made up of line slideway (16), guide-track groove, servo feed motor (14), shaft coupling (27), leading screw plate body, bearing block (26), leading screw (28) and nut seat (29); This bearing (12) bottom surface is connected fixing with the slide block of line slideway (16); The rail of line slideway is installed on the support (15); Go up installing diaxon bearing (26) with this corresponding support of leading screw plate body end positions (15); Leading screw (28) is installed in this diaxon bearing (26), on the leading screw that is positioned between the two bearings seat (26), is being screwed nut seat (29), this nut seat (29) is connected on bearing (12) bottom surface through screw; Simultaneously, stretch on the axle head outside bearing (26) at this leading screw (28) and be connected with servo feed motor (14) through shaft coupling (27).
3. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: described each radially T shape key (10) be to be fixed on the conical surface through screw to expand on the end face of piece (21), on the end face of mounting flange (11), have the radially T shape keyway that supplies T shape key (10) radially to slide.
4. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: the conical surface T shape key (20) that described each guiding is slided is fixed on the sliding surface of the bloated piece (21) of the conical surface through screw, has the axial T shape keyway of the conical surface T shape key (20) that supplies conical surface T shape key (20) slip on the sliding surface corresponding with cone (8).
5. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: described hydraulically powered pipe end cushions positioning baffle mechanism and is made up of baffle plate hoist cylinder (3), up-down chute baffle plate (4), up-down chute, rotating shaft (30) and buffering oil cylinder (5); In the up-down of processed steel pipe (1) pipe end lateral vertical installing by the up-down chute baffle plate (4) of baffle plate hoist cylinder (3) driving; Described up-down chute is installed on the support (15) through rotating shaft (30), and the support (15) relative with the up-down chute installed it and stretched out the cushion cylinder (5) that rod end and up-down chute baffle plate (4) touch mutually.
6. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: the carrying roller of described motorized adjustment height (18) is made up of electronic leading screw (34) and connecting rod (35); Carry processed steel pipe (1) by motor-driven carrying roller (18) rotation; Drive carrying roller (18) swing through electronic leading screw (34) drive link (35) and go up and down, it is consistent with the center of hole enlargement head to realize that carrying roller (18) holds up the center of processed steel pipe (1).
7. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: described hydraulically powered centralising device is made up of centering oil cylinder (31), centering clamp (2) and centering chute (17), at the two centering clamps (2) of the left and right symmetry installing of centering chute by the centering hydraulic oil cylinder driving.
8. by the described enlarged diameter type steel tube end part of claim 1 sizing mill, it is characterized in that: the described conical surface expands to spread all on the sliding surface of piece (21) and is provided with several lubricant holes, in described each lubrication prescription hole through pressing notes solid lubricant (33).
9. by the described enlarged diameter type steel tube end part of claim 1 sizing mill; It is characterized in that: parallel installing magnetostrictive displacement sensor (32) in the outside of described hole enlargement oil cylinder; One end of described magnetostrictive displacement sensor (32) is connected with hollow piston (23) external part, and the other end of this magnetostrictive displacement sensor (32) is fixed on the corresponding bearing (12) of hole enlargement oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205300786U CN202447545U (en) | 2011-12-16 | 2011-12-16 | Diameter expanding type sizing mill for steel pipe end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205300786U CN202447545U (en) | 2011-12-16 | 2011-12-16 | Diameter expanding type sizing mill for steel pipe end |
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| Publication Number | Publication Date |
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| CN202447545U true CN202447545U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205300786U Expired - Lifetime CN202447545U (en) | 2011-12-16 | 2011-12-16 | Diameter expanding type sizing mill for steel pipe end |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464590A (en) * | 2013-09-05 | 2013-12-25 | 无锡双友石化机械有限公司 | Mold positioning and detecting system of pipe-end expanding machine |
| CN103878259A (en) * | 2014-03-17 | 2014-06-25 | 刘战晓 | Novel full-automatic steel tube expanding machine |
| CN104390849A (en) * | 2013-11-26 | 2015-03-04 | 上海华龙测试仪器股份有限公司 | Steel pipe expanding testing machine's sample pipe ring installation fixture |
| CN112412900A (en) * | 2020-11-10 | 2021-02-26 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
| CN117920875A (en) * | 2024-03-21 | 2024-04-26 | 山东沃亚森曼机械科技有限公司 | Lever type steel pipe end expanding machine |
-
2011
- 2011-12-16 CN CN2011205300786U patent/CN202447545U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464590A (en) * | 2013-09-05 | 2013-12-25 | 无锡双友石化机械有限公司 | Mold positioning and detecting system of pipe-end expanding machine |
| CN104390849A (en) * | 2013-11-26 | 2015-03-04 | 上海华龙测试仪器股份有限公司 | Steel pipe expanding testing machine's sample pipe ring installation fixture |
| CN103878259A (en) * | 2014-03-17 | 2014-06-25 | 刘战晓 | Novel full-automatic steel tube expanding machine |
| CN112412900A (en) * | 2020-11-10 | 2021-02-26 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
| CN112412900B (en) * | 2020-11-10 | 2022-08-02 | 太原重工股份有限公司 | Main oil cylinder equipment for expanding machine |
| CN117920875A (en) * | 2024-03-21 | 2024-04-26 | 山东沃亚森曼机械科技有限公司 | Lever type steel pipe end expanding machine |
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Granted publication date: 20120926 |
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| CX01 | Expiry of patent term |