CN201702303U - Annular piece axial positioning device for a ring rolling device with a horizontally arranged roller - Google Patents
Annular piece axial positioning device for a ring rolling device with a horizontally arranged roller Download PDFInfo
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- CN201702303U CN201702303U CN2010202075669U CN201020207566U CN201702303U CN 201702303 U CN201702303 U CN 201702303U CN 2010202075669 U CN2010202075669 U CN 2010202075669U CN 201020207566 U CN201020207566 U CN 201020207566U CN 201702303 U CN201702303 U CN 201702303U
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- ring
- guide pillar
- position limiting
- limiting structure
- roll
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Abstract
The utility model relates to the metal pressure molding technical field, discloses an annular piece axial positioning device for a ring rolling device with a horizontally arranged roller, capable of making the rolling smoothly performed, comprising limit structures respectively arranged at the axial two sides of the annular piece and an adjustment device of the limit structure, wherein the adjustment device is arranged at another side of the limit structure relative to the annular piece and the limit structure and the adjustment device are fixedly connected to together and axially move along the annular piece together with the adjustment device. By the contact fit between the limit structures at the two sides of the annular piece and the end surface of the annular piece, the movement space of the annular piece along the axial direction is limited and rolling piece is prevented from pulling to one side, so as to ensure smoothly rolling and the limit structures and the adjustment device are fixedly connected together and the limit structures axially move along the annular piece together with the adjustment device. The annular piece axial positioning device is suitable for producing annular pieces of various specifications. The annular piece axial positioning device is suitable for the radial ring rolling device with the horizontally arranged roller, especially suitable for the very large type ring rolling device with the horizontally arranged roller.
Description
Technical field
The utility model relates to the stress metal forming field, especially a kind of machining large cylinder forgings ring axial direction positioning device of the horizontally disposed Ring Rolling Machine of roll.
Background technology
Along with the fast development of key areas technical equipments such as China's nuclear reactor, petrochemical industry, wind-power electricity generation, Aero-Space, the demand of large-scale cartridge type forging is grown with each passing day, simultaneously size, performance and the material of ring are all had higher requirement.But it is high that this large-scale shell ring requires capacity of equipment, and the production difficulty is bigger.
Existing Ring Rolling Machine equipment is the vertical or horizontal single chassis structure that is no matter, promptly embracing roller, driven roller, core roller one end is unsettled by the frame support other end, because the following shortcoming of the above-mentioned Ring Rolling Machine ubiquity of this cantilever structure: poor rigidity, when rolling, the unsettled side distortion of each roller is big, is unfavorable for improving rolling power; Roll axis and transmission shafts are to all not parallel, transmission system all need dispose steering mechanism, steering mechanism has then limited the raising of rolling power, while transmission system complexity, increased the cost on equipment and basis, as the horizontal type structure that roll is vertically arranged, improve roll-force and restricted by the bevel gear modulus.Because above-mentioned limitation, to roll over the ring apparatus maximum rolling force at present both at home and abroad and be no more than 600 tons, the ring weight of production, specification are little, highly generally less than 1 meter, only are used for the manufacturing of products such as bearer ring, gear ring, flange, wheel hub.
Therefore the production of present large-scale cartridge type forging also has to rely on large-scale hydraulic press to carry out flat-die forging to solve, and this explained hereafter work efficiency is low, poor dimensional precision, and the forging utilization rate is lower, needs heating for multiple times, and energy consumption is big, and the forging manufacturing cost is higher.
For this reason, the applicant has invented the horizontally disposed radially Ring Rolling Machine of a kind of ultra-large type roll (having applied for patent of invention), its frame is by transmission side frame and fore side frame vertical and that be oppositely arranged, cross member between transmission side frame and the fore side frame bottom, the reinforcement bearing rib in the transmission side frame and the fore side frame outside is formed, transmission side frame and fore side frame connect into open top roll housing by cross member, by wedge and foundation bolt, frame is anchored on the ground, machine frame at two sides adopts two integrally closed castings, good rigidly, be provided with powerful bearing rib in the outside, to improve the lateral rigidity of frame; Its core roller, driven roller, an armful roll axis are parallel to each other to be and are horizontally disposed with, driven roller is arranged between transmission side frame and the fore side frame lower, the core roller is arranged between the transmission side frame and fore side frame of driven roller top, core roller feed mechanism is provided with and is arranged at respectively core roller two ends in pairs, and core roller two ends link to each other with corresponding core roller feed mechanism by the core roll bearing seat respectively; And be provided with and take out roller mechanism, during loading and unloading, extract the assembling of core roller out by taking out roller mechanism, after the ring lifting, again the assembling of core roller is sent between the machine frame at two sides, finish being connected of the assembling of core roller and core roller feed mechanism after.Because roll is horizontally disposed, frame adopts the two-shipper shelf structure, driven roller, core roller, embraces roller all by two end supports, good rigidly, and the rolling power that can bear is big, and ring product specification, weight that can be rolling be big, and scope is wide, can adapt to large-scale shell ring manufacturing requirement.Compare with existing hydraulic press open die forging machining large shell ring, the working (machining) efficiency height is rolled over ring time weak point continuously, and the heating number of times is few, and energy savings reduces loss; The machining accuracy height significantly reduces the following process surplus, improves stock utilization, reduces manufacturing cost; Rolling ratio is big, spreading continuously, and the forging distortion evenly can reduce the generation of forge crack and growing up of crystal grain, and the ring performance is good; Compare with forging, impact, vibrations and noise are little.
But the horizontally disposed Ring Rolling Machine of above-mentioned ultra-large type roll is because roll is horizontally disposed, there is not the existence of board yet, arrange with the roller declination of existing vertical Ring Rolling Machine, the roll of horizontal Ring Rolling Machine is arranged vertically and compares, can't utilize cooperating of ring and board, utilize the ring deadweight to carry out the axial location of ring, because the wall unevenness of ring blank, can cause axial force when rolling, cause the rolled piece sideslip, the blank dimension error of especially large-scale shell ring ring is very big usually, influences especially serious.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly can avoid the rolled piece sideslip, thereby guarantees rollingly to carry out smoothly, is used for the ring axial direction positioning device of the horizontally disposed Ring Rolling Machine of roll.
The technical scheme that its technical problem that solves the utility model adopts is: the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll, comprise the position limiting structure that is arranged at the axial both sides of ring respectively and the adjusting device of position limiting structure, described adjusting device is arranged at the opposite side of the relative ring of position limiting structure, described position limiting structure fixedly connected with adjusting device and position limiting structure with adjusting device along the ring axially-movable.
The beneficial effects of the utility model are: by the contact cooperation of ring both sides position limiting structure with the ring end face, limited ring along its axial space, avoided the rolled piece sideslip, guaranteed rolling carrying out smoothly; And position limiting structure is fixedlyed connected with adjusting device and position limiting structure with adjusting device along the ring axially-movable, can adapt to production with all size ring.
Further, described adjusting device comprises guide frame, and described guide frame is made up of guide pillar and the fixed support that is provided with pilot hole; Described guide pillar passes pilot hole and is slidingly matched with fixed support, and guide pillar one end is fixedlyed connected with position limiting structure.Avoided because ring is rotated the influence to vertical bending moment that adjusting device applies.
Further, for fear of causing the generation of horizontal bending moment because position limiting structure is stressed with the guide pillar disalignment, described position limiting structure is the push pedal of width greater than the ring diameter, and the adjusting device of described push pedal is arranged at the push pedal two ends in pairs.
Further, described guide pillar cross section is a rectangle, axially is provided with at least two fixed supports along guide pillar.
Further, the pass of described fixed support pilot hole is formed by two rollers that are oppositely arranged up and down or along four rollers of guide pillar circumferential arrangement, rolls and cooperate in the corresponding surface with guide pillar of described roller.
Further, for Fast Installation and the replacing that guarantees push pedal, described guide pillar is connected an end with push pedal termination is provided with the link plate of fixedlying connected with guide pillar, the adjacent side of described push pedal and link plate is provided with the block that is fixed thereon, and described block is positioned at link plate top and both contacts and spacing fixing by steady pin.
Further, described block bottom surface, link plate end face are respectively the inclined-plane that matches, and the adjacent end level height of described inclined-plane and push pedal is greater than an end adjacent with guide pillar.
Further, be provided with connecting plate between the link plate of the described guide pillar that is arranged at the push pedal two ends.
Produce large-scale shell ring because the horizontally disposed radially Ring Rolling Machine of roll mainly is applicable to, the axial force that is caused by wall unevenness is big, for fear of because the excessive destruction of causing the ring end face of corrective force that the ring axial location is corrected.Further, described adjusting device comprises drive unit, and described drive unit is provided with the closed-loop control system of being made up of position limiting structure displacement transducer, pressure sensor and controller.Before rolling, the both sides position limiting structure is in the maximum opening degree position, and after ring was in place, the both sides position limiting structure moved with adjusting device, and finished the centering of ring under the monitoring of position limiting structure Bit Shift sensor, after centering is finished, begins rolling; In above-mentioned centering course of action, can finish simultaneously the wide work of the survey of ring by the displacement transducer signal of both sides position-limit mechanism; And when rolling, drive unit keeps suitable axial force, the position limiting structure fixed-site, prevent the ring sideslip, but when the suffered axial force of certain lateral confinement bit architecture during, stop rollingly according to pressure sensor, retreat position limiting structure simultaneously greater than the lateral pressure set, and then ring carried out centering, continue rolling after centering is finished.
As a kind of preferred version, described drive unit is a hydraulic cylinder, and described position limiting structure displacement transducer is the displacement transducer of hydraulic cylinder piston rod, and described force sensor is the oil pressure pressure sensor of hydraulic cylinder.
Description of drawings
Fig. 1 is the layout schematic diagram that is provided with the horizontally disposed Ring Rolling Machine of roll of the utility model ring axial direction positioning device;
Fig. 2 is the front view of the utility model ring axial direction positioning device;
Fig. 3 is the vertical view of the utility model ring axial direction positioning device;
Fig. 4 is that the A-A of Fig. 3 is to cutaway view;
Fig. 5 is that the B-B of Fig. 3 is to cutaway view;
Fig. 6 is that the C-C of Fig. 3 is to cutaway view.
Be labeled as among the figure: ring 1; Frame 2; Push pedal 3; Guide pillar 4; Fixed support 5; Link plate 6; Block 7; Steady pin 8; Connecting plate 9; Hydraulic cylinder 10; Piston rod 11; Cylinder body 12; Following roller 13; Last roller 14; Latch 15; Gripper shoe 16; Wearing plate 17; Dust cover 18.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll of the present utility model, comprise the position limiting structure that is arranged at ring 1 axial both sides respectively and the adjusting device of position limiting structure, described adjusting device is arranged at the opposite side of the relative ring 1 of position limiting structure, described position limiting structure fixedly connected with adjusting device and position limiting structure with adjusting device along ring 1 axially-movable.
By of the contact cooperation of ring 1 both sides position limiting structure with ring 1 end face, limited ring 1 along its axial space, avoided the rolled piece sideslip, guaranteed rolling carrying out smoothly; And position limiting structure is fixedlyed connected with adjusting device and position limiting structure with adjusting device along the ring axially-movable, can be adapted to the production of all size ring 1.
Adjusting device can be the automatic mechanism that is made of hydraulic cylinder, screw mandrel etc., but in the operation of rolling, ring 1 with driven roller around himself axial rotation, the rotation meeting of ring 1 applies a power downward or upward to position limiting structure, perhaps when centering, the ring that diameter is less is owing to be positioned at the below, and thrust can apply an offset loading force to position limiting structure, this power can form moment of flexure downward or upward on hydraulic cylinder, screw mandrel, thereby causes the deformed damaged of hydraulic cylinder, screw mandrel.Therefore for fear of the influence of moment of flexure that this power forms to the adjustment structure, described adjusting device comprises guide frame, and described guide frame is made up of guide pillar 4 and the fixed support 5 that is provided with pilot hole; Described guide pillar 4 passes pilot hole and is slidingly matched with fixed support 5, and guide pillar 4 one ends are fixedlyed connected with position limiting structure.
Above-mentioned position limiting structure can be V-shaped groove, block, plate etc., and the ring axial direction positioning device can be provided with four and be separately positioned on the radially position of both sides of ring 1 both ends horizontal; Also can only the plate of width greater than the ring diameter be set in ring 1 both sides; Perhaps plate that width is set greater than the ring diameter, opposite side is arranged on ring horizontal radial both sides.But because the difference of ring 1 specification, its diameter is also different, therefore when being arranged on ring 1 horizontal radial both sides, the suffered axial force of position limiting structure and guide pillar 4 axis and disalignment, therefore guide pillar 4 can be subjected to the moment of flexure of level, may also need simultaneously to be provided with position limiting structure about adjust structure, complex structure, the ring axial direction positioning device Synchronization Control complexity of ring 1 horizontal radial both sides.Therefore, best, described position limiting structure is the push pedal 3 of width greater than ring 1 diameter, and the adjusting device of described push pedal 3 is arranged at push pedal 3 two ends in pairs.Simple in structure, avoided the formation of horizontal bending moment simultaneously.
Concrete, in order better to adapt to the production of all size ring, push pedal 3 overhead heights are higher than the axis height that Ring Rolling Machine allows to produce maximum gauge ring 1, push pedal 3 bottom level are lower than the axis height that Ring Rolling Machine allows to produce minimum diameter ring 1, the interference of embracing roller, core roller for fear of push pedal 3 and Ring Rolling Machine simultaneously, push pedal 1 are that inverted wing-shaped plate and bottom have the arc groove that appearance core roller passes.The different push pedal of a plurality of allowed bands can certainly be set.
The cross section of above-mentioned guide pillar 4 can be arbitrarily, and as circle, rectangle, triangle etc., but guide pillar 4 mainly is subjected to moment of flexure up or down, so the longitudinal strength of guide pillar should be enough; Simultaneously, because guide pillar 4 and ring 1 direction of relative movement is different,, distinguish promptly also that corresponding moment of flexure makes progress in order to guarantee each position guide pillar 4, general between the guide pillar 4 of downward two kinds of different stressing conditions.Best, described guide pillar 4 cross sections are rectangle, axially are provided with two fixed supports 5 along guide pillar 4.
Simultaneously, for the deadweight that alleviates guide pillar 4 under the enough prerequisite of proof strength, described guide pillar is a case structure, is provided with longitudinal bracing plate 16 in its cavity.The maintenance of guide pillar 4 for convenience, the upper and lower surface of box guide pillar 4 is respectively arranged with wearing plate 17.
Above-mentioned fixed support 5 also can be provided with more than two, also a fixed support 5 can only be set under the enough prerequisite of pilot hole length.Fixed support 5 can be that independently assembly also can be the part of Ring Rolling Machine frame, but for safeguard, better convenient, best be set to independent assembly, and be fixed in the Ring Rolling Machine frame.
In order to guarantee the smooth and easy of guide pillar 4 motions, the pass of described fixed support 5 pilot holes is formed by two rollers that are oppositely arranged up and down or along four rollers of guide pillar 4 circumferential arrangement, and described roller rolls with guide pillar 4 corresponding surfaces and cooperates.In order to reduce the complexity of structure, best is made of two rollers that are oppositely arranged up and down, and last roller 14, following roller 13 two ends are supported by thrust bearing respectively.Roller 14, following roller 13 only are set, and the spacing of guide pillar 4 both sides can be made of the pilot hole sidewall, but because guide pillar can be subjected to the moment of flexure of level hardly, best in order further to reduce sliding friction, by the left and right displacement of guide groove restriction guide pillar 4.Concrete, guide groove is arranged on down the annular groove on the roller 13, and guide pillar 4 bottoms are positioned at groove, by guide pillar 4 two sides and cooperating of groove side carrying out spacing.
In order to guarantee the lubricated of guide pillar, avoid foreign material to fall into, avoid ring high temperature to lubricated influence, be provided with and be fixed on the dust cover 18 that also guide pillar 4 is surrounded on the fixed support 5.
Because push pedal 3 directly contacts with ring 1, be subjected to temperatures involved, the push pedal easy deformation, push pedal simultaneously also is subjected to the friction of ring, therefore the maintenance and the replacing of push pedal for convenience, described guide pillar 4 is connected an end with push pedal 3 termination is provided with the link plate 6 of fixedlying connected with guide pillar 4, and described push pedal 3 is provided with the block 7 that is fixed thereon with link plate 6 adjacent sides, and described block 7 is positioned at link plate 6 tops and both contacts and spacing fixing by steady pin 8.Come off for fear of push pedal, steady pin 8 passes block 7 end faces and blocks with the latch 15 that passes steady pin 8 tops.
Further in order to guarantee tight contact the between push pedal 3 and link plate 6 adjacent side, avoid because axial location error and steady pin 8 that both fit clearances caused bear shearing force, described block 7 bottom surfaces, link plate 6 end faces are respectively the inclined-plane that matches, and the adjacent end level height of described inclined-plane and push pedal 3 is greater than an end adjacent with guide pillar 4.Deadweight by push pedal 3 has guaranteed being close to of both sides adjacently situated surfaces.
In order to alleviate the deadweight of push pedal, case structure is adopted in push pedal, its inside is provided with crisscross gripper shoe, simultaneously, because ring may be between two guide pillars 4, therefore in order to guarantee the anti-deformation at push pedal middle part, be provided with connecting plate 9 between the link plate 6 of the described guide pillar 4 that is arranged at push pedal 3 two ends.
The above-mentioned adjusting device that has guide pillar to constitute can be the artificial device of adjusting.But produce large-scale shell ring because the horizontally disposed radially Ring Rolling Machine of roll mainly is applicable to, the axial force that is caused by wall unevenness is big, for fear of because the excessive destruction of causing the ring end face of corrective force that the ring axial location is corrected.Preferably adopt control automatically, concrete, described adjusting device comprises drive unit, and described drive unit is provided with the closed-loop control system of being made up of position limiting structure displacement transducer, pressure sensor and controller.
Before rolling, the both sides position limiting structure is in the maximum opening degree position, after ring is in place, the both sides position limiting structure moves with adjusting device, and the centering of under the monitoring of position limiting structure displacement transducer, pressure sensor, finishing ring, in above-mentioned centering course of action, can finish simultaneously the wide work of the survey of ring by the displacement transducer signal of both sides position-limit mechanism; And when rolling, drive unit keeps suitable axial force, and the position limiting structure fixed-site prevents the ring sideslip; But when the ring sideslip, when the suffered axial force of certain lateral confinement bit architecture during greater than the lateral pressure set, stop rollingly according to pressure sensor, retreat position limiting structure simultaneously, and then ring is carried out centering, continuation is rolling centering is finished after.
Above-mentioned drive unit can be leading screw, line motor, hydraulic cylinder etc., but when adopting hydraulic cylinder, the sensor setting is the simplest, can share simultaneously the hydraulic control system of Ring Rolling Machine feed system, therefore, best, described drive unit is a hydraulic cylinder 10, described position limiting structure displacement transducer is the displacement transducer of hydraulic cylinder 10 piston rods 11, and described pressure sensor is the oil pressure pressure sensor of hydraulic cylinder 10.
Above-mentioned hydraulic cylinder 10 can drive by 4 pairs of push pedals of guide pillar, but this moment, both sides hydraulic cylinder 10 synchronous effects were poor, the easy jam of guide pillar, therefore, best, hydraulic cylinder 10 cylinder bodies 12 are fixed in frame 2, and piston rod 11 is hinged with connecting plate 9 bulbs, and bulb is hinged can effectively avoid push pedal that moment of flexure up or down is passed to piston rod 11.
Claims (10)
1. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll, it is characterized in that: comprise being arranged at ring (1) the axially position limiting structure of both sides and the adjusting device of position limiting structure respectively, described adjusting device is arranged at the opposite side of the relative ring of position limiting structure (1), described position limiting structure fixedly connected with adjusting device and position limiting structure with adjusting device along ring (1) axially-movable.
2. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 1, it is characterized in that: described adjusting device comprises guide frame, described guide frame is made up of guide pillar (4) and the fixed support (5) that is provided with pilot hole; Described guide pillar (4) passes pilot hole and is slidingly matched with fixed support (5), and guide pillar (4) one ends are fixedlyed connected with position limiting structure.
3. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 2, it is characterized in that: described position limiting structure is the push pedal (3) of width greater than ring (1) diameter, and the adjusting device of described push pedal (3) is arranged at push pedal (3) two ends in pairs.
4. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 2 is characterized in that: described guide pillar (4) cross section is a rectangle, axially is provided with at least two fixed supports (5) along guide pillar (4).
5. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 4, it is characterized in that: the pass of described fixed support (5) pilot hole is formed by two rollers that are oppositely arranged up and down or along four rollers of guide pillar (4) circumferential arrangement, rolls and cooperate in the corresponding surface with guide pillar (4) of described roller.
6. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 5, it is characterized in that: described guide pillar (4) is connected an end with push pedal (3) termination is provided with the link plate (6) of fixedlying connected with guide pillar (4), the adjacent side with link plate (6) of described push pedal (3) is provided with the block (7) that is fixed thereon, and described block (7) is positioned at link plate (6) top and both contacts and spacing fixing by steady pin (8).
7. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 6, it is characterized in that: described block (7) bottom surface, link plate (6) end face are respectively the inclined-plane that matches, and the adjacent end level height of described inclined-plane and push pedal (3) is greater than an end adjacent with guide pillar (4).
8. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 6 is characterized in that: be provided with connecting plate (9) between the link plate (6) of the described guide pillar (4) that is arranged at push pedal (3) two ends.
9. as claim 1,2,3,4,5,6, the 7 or 8 described ring axial direction positioning devices that are used for the horizontally disposed Ring Rolling Machine of roll, it is characterized in that: described adjusting device comprises drive unit, and described drive unit is provided with the closed-loop control system of being made up of position limiting structure displacement transducer, pressure sensor and controller.
10. the ring axial direction positioning device that is used for the horizontally disposed Ring Rolling Machine of roll as claimed in claim 9, it is characterized in that: described drive unit is hydraulic cylinder (10), described position limiting structure displacement transducer is the displacement transducer of hydraulic cylinder (10) piston rod (11), and described force sensor is the oil pressure pressure sensor of hydraulic cylinder (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202075669U CN201702303U (en) | 2010-05-28 | 2010-05-28 | Annular piece axial positioning device for a ring rolling device with a horizontally arranged roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202075669U CN201702303U (en) | 2010-05-28 | 2010-05-28 | Annular piece axial positioning device for a ring rolling device with a horizontally arranged roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201702303U true CN201702303U (en) | 2011-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202075669U Expired - Lifetime CN201702303U (en) | 2010-05-28 | 2010-05-28 | Annular piece axial positioning device for a ring rolling device with a horizontally arranged roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201702303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568694A (en) * | 2017-12-05 | 2018-09-25 | 湖南飞沃新能源科技股份有限公司 | Material conveying equipment |
| CN116393639A (en) * | 2023-04-11 | 2023-07-07 | 泰州市宏祥动力机械有限公司 | Machine tool for processing face gear |
-
2010
- 2010-05-28 CN CN2010202075669U patent/CN201702303U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568694A (en) * | 2017-12-05 | 2018-09-25 | 湖南飞沃新能源科技股份有限公司 | Material conveying equipment |
| CN116393639A (en) * | 2023-04-11 | 2023-07-07 | 泰州市宏祥动力机械有限公司 | Machine tool for processing face gear |
| CN116393639B (en) * | 2023-04-11 | 2024-06-11 | 泰州市宏祥动力机械有限公司 | Machine tool for processing face gear |
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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 |
Effective date of registration: 20180316 Address after: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee after: Double (Deyang) heavy equipment Co., Ltd. Address before: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee before: Erzhong Group (Deyang) Heavy Equipment Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
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| CX01 | Expiry of patent term |