CN2821288Y - Parallel double screw high torque high rotation speed gearbox - Google Patents
Parallel double screw high torque high rotation speed gearbox Download PDFInfo
- Publication number
- CN2821288Y CN2821288Y CN 200520035349 CN200520035349U CN2821288Y CN 2821288 Y CN2821288 Y CN 2821288Y CN 200520035349 CN200520035349 CN 200520035349 CN 200520035349 U CN200520035349 U CN 200520035349U CN 2821288 Y CN2821288 Y CN 2821288Y
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- box
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a parallel double screw high torque high rotation speed gearbox, which comprises an input shaft 1, an A output shaft 2, an upper transmission shaft 3, a lower transmission shaft 4, a B output shaft 5, gears 6-13, a tandem thrust bearing 14 and a thrust bearing 15. The utility model has the advantages of high output rotating speed and big output torque, and the top and bottom transmission counteracts the shaft force and the radial force of the output shafts, so bearings of the output shafts can be in a best stressed state, thus furthest prolonging the service life of the output shafts and thereof bearings. The gearbox is applied to a driving system of a parallel equidirectional double screw extruder or the driving system of a parallel heterotrophic double screw extruder.
Description
Technical field
The utility model relates to a kind of gear-box, the high moment of torsion high rotation speed gear box of particularly a kind of parallel double-screw.
Technical background
At present, double screw extruder has been widely used in plastics, rubber materials, particularly the cocurrent and parallel double screw extruder possesses outstanding melting effect and high work efficiency, be the most effective means of modifying plastics processing, the typical case uses to be had: general-purpose plastics PP, PE, PS, engineering plastics PA, ABS, PET, PBT, POM, LCP, PC, PA6T, PA8T, PEEK, the blend of PPS etc., mineral-filled, fiber reinforcement and powder coating, color masterbatch, elastomeric mixing granulator and extruding and moulding processing, and better more mixing because of it than single screw extrusion machine, exhaust, reaction and self-cleaning function and be widely used and pay attention to.
For a long time, " high moment of torsion, high rotating speed, high yield " as extruding and moulding equipment main performance index, be the main direction of extrusion shaping machine development, the entrepreneur is concerned about the most than being not only for high output and price, also is the target that the scientific worker studies intensively always.Extruder high speed, high yield no doubt can make the investor obtain the bigger output and the repayment of great number with lower input, but from technical standpoint, for guaranteeing the high yield of extruder, must provide screw rod high moment of torsion, guarantee the rotating speed that screw rod is high simultaneously, the technological difficulties that this will bring a series of needs to overcome for transmission system (torque distribution case), wherein how the gear of gear-box and bearing improve its life-span under high load, situation about running up, and promptly are the matters of utmost importance that need solve aspect transmission.
Summary of the invention
The purpose of this utility model promptly is to overcome the shortcoming of prior art, the high moment of torsion high rotation speed gear box of parallel double-screw of a kind of output shaft pure torsion or approximate pure torsion output is provided, it makes double screw extruder gear-box weak link strength of gear reduce by one times, the weak link bearing has best stress, solve parallel double-screw extruder and improved gear, the bearing life reduction that brings behind screw torque and the rotating speed, can not satisfy the difficult problem of usage requirement.
The purpose of this utility model is achieved through the following technical solutions: the high moment of torsion high rotation speed gear box of parallel double-screw, it comprises input shaft, the A output shaft, last transmission shaft, lower drive shaft and B output shaft, input shaft is provided with the input gear, A output shaft termination gear engagement on input gear and the A output shaft, also be provided with A output shaft intermediate gear on the A output shaft, A output shaft intermediate gear simultaneously with last transmission shaft on the C gear and the E gear engagement on the lower drive shaft, also be provided with thrust-bearing on the A output shaft, the B output shaft is provided with the B output shaft gear, also be provided with the tandem thrust-bearing on the B output shaft, the B output shaft gear simultaneously with last transmission shaft on the D gear and the F gear engagement on the lower drive shaft.
The shaft core line of the B output shaft in the gear-box, and the shaft axis of the gear that is meshed with gear on the B output shaft is at grade.
The shaft core line of the B output shaft in the gear-box, and the angle of the plane that shaft axis constituted of the gear that is meshed with gear on the B output shaft and vertical plane formation is in-25 °～0 °～25 ° scopes.
It is zero that radial force that B output shaft in the described gear-box is suffered and axial force are offset, and is pure torsion or the output of approximate pure torsion.
A output shaft, B output shaft two output shaft centre distance in the gear-box are 15～270mm, screw diameter 19～320mm.
A output shaft in the gear-box, the output speed of B output shaft two output shafts are 400～1800rpm.
By top narration as can be seen, the utlity model has following advantage: this gear-box has the output speed height, the characteristics that output torque is big, last underdrive has been offset the axial force and the radial force of output shaft, make output shaft reach best stress, thereby make output shaft bearing be in best stress, improved the working life of output shaft and bearing thereof to greatest extent.This gear-box is applicable to the drive system of parallel parallel dual-screw extruding machine or parallel counter rotation twin screw extruder.
Description of drawings
Fig. 1 is the utility model B output shaft pure torsion output transmission structure schematic representation.
Fig. 2 is the utility model B output shaft pure torsion output force analysis figure.
Fig. 3 is the drive mechanism schematic representation at the utility model strap clamp angle.
Fig. 4 is the approximate pure torsion output of the utility model B output shaft force analysis figure.
Wherein:
1---input shaft, 2---the A output shaft, 3---go up transmission shaft, 4---lower drive shaft,
5---the B output shaft, 6---the input gear, 7---A output shaft termination gear,
8---A output shaft intermediate gear, 9---the C gear, 10---the E gear,
11---the D gear, 12---the F gear, 13---the B output shaft gear,
14---the tandem thrust-bearing, 15---thrust-bearing.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1, the high moment of torsion high rotation speed gear box of parallel double-screw, the utility model is applicable in the same way or anisotropic parallel twin-screw extruding machine, it comprises input shaft 1, A output shaft 2, last transmission shaft 3, lower drive shaft 4 and B output shaft 5, input shaft 1 is provided with input gear 6, A output shaft termination gear 7 engagements on input gear 6 and the A output shaft 2, also be provided with A output shaft intermediate gear 8 on the A output shaft 2, A output shaft intermediate gear 8 respectively with last transmission shaft 3 on C gear 9 and the E gear on the lower drive shaft 4 10 engagement, also be provided with thrust-bearing 15 on the A output shaft 2, B output shaft 5 is provided with B output shaft gear 13, also be provided with tandem thrust-bearing 14 on the B output shaft 5, B output shaft gear 13 respectively with last transmission shaft 3 on D gear 11 and the F gear on the lower drive shaft 4 12 engagement.The shaft core line of the B output shaft 5 in the gear-box, the shaft axis of the gear that is meshed with gear on the B output shaft at grade.The power that motor passes to input shaft 1 reaches A output shaft termination gear 7 from input gear 6, the axle at gear 7 places, A output shaft termination is directly exported 50% power as A output shaft 2, A output shaft intermediate gear 8 on the A output shaft is passed to B output shaft gear 13 with power F1 and F2 with all the other power of 50% respectively by C gear 9, E gear 10, D gear 11 and F gear 12 on the last lower drive shaft 3,4 simultaneously.Is furnished with corresponding bearing on the every transmission shaft; the axial force (direction is pointed to input shaft by output shaft) that is reached output shaft by screw rod is born by thrust-bearing; the axial force that special-purpose tandem thrust-bearing 14 bears B output shaft 5; thrust-bearing 15 bears the axial force of A output shaft; all axles, gear, bearing all are assemblied in the gear housing, and are furnished with lubrication system and corresponding overload protective device.As shown in Figure 2, D gear 11, F gear 12, the shaft axis of B output shaft gear 13 is on the same plane perpendicular to horizontal plane, so axial thrust load Fa1 that D gear 11 and F gear 12 are produced when driving B output shaft gear 13 and Fa2 are also on this plane, and equal and opposite in direction, direction is opposite, thereby the axial thrust load that acts on the B output shaft is cancelled out each other, radial force Fr1 that D gear 11 and F gear 12 are produced when driving B output shaft gear 13 and Fr2 be equal and opposite in direction also, direction is opposite, so the radial component perpendicular to axial direction that acts on the B output shaft is also cancelled out each other, as seen the moment of torsion that the radial component about the B output shaft only is subjected on the contact points produces, thus realize pure torsion output.Because the B output shaft spatially is subjected to the restriction of screw rod centre distance, does not have room for development, thereby become a big difficult point that improves the double screw extruder bearing capacity.This drive mechanism makes the stressed the optimum state that is in of B output shaft, has improved the bearing capacity of B output shaft to greatest extent, that is to say to have solved the bottleneck problem that improves the double screw extruder bearing capacity.
Provided by the invention being used in the same way or anisotropic parallel twin-screw extruding machine, the gear-box of high moment of torsion, the output of high rotating speed is provided, when wherein D gear 11 and F gear 12 are passed to B output shaft gear 13 with power F3 and F4, D gear 11 and the formed plane of B output shaft gear 13 shaft axiss and F gear 12 and the formed plane of B output shaft gear 13 shaft axiss can not overlap yet, the angle of two planes and vertical plane is seen Fig. 3, Fig. 4 in-25 °～0 °～25 ° scopes.At this moment, F3, the component that F4 produced is respectively radial force Fr3, Fr4, axial force F a3, Fa4 and tangential force Ft3, Ft4, see Fig. 4, and Fr3 and Fr4, Fa3 and Fa4 are respectively equal and opposite in direction, the power that direction is opposite, therefore cancel out each other, but, and can produce a small amount of tangential component Ft3, Ft4, equal and opposite in direction because there are angle in D gear 11 and the formed plane of B output shaft gear 13 shaft axiss and F gear 12 and the formed plane of B output shaft gear 13 shaft axiss and vertical plane, direction is identical, makes the stress of B output shaft 5 be approximate pure torsion output.
But two output shaft cocurrent and parallel rotations or incorgruous flat to rotation, two output shaft centre distance are 15～270mm, screw diameter 19～320mm.
A output shaft 2 in the gear-box, the output speed of 5 liang of output shafts of B output shaft are 400～1800rpm.
Provided by the invention be used in the same way or the gear-box of anisotropic parallel twin-screw extruding machine has greatly improved the stress of output shaft, can effectively improve the bearing working life of output shaft, especially under high speed conditions, because it is zero that axial force that the B output shaft is suffered and radial force are all offset, make the theoretical life-span of B output shaft bearing for infinitely great, and A output shaft and other transmission shafts are spatially unrestricted, only need corresponding increasing bearing after improving output torque and rotating speed, can not produce constraint to the bearing capacity of gear-box, at the less position of the A output shaft diameter of axle, there has not been radial force, gear-box provided by the utility model only bears moment, so can be applicable to high moment of torsion, the output of high rotating speed in the same way or anisotropic parallel twin-screw extruding machine.
Claims (6)
1. the high moment of torsion high rotation speed gear box of parallel double-screw, it is characterized in that: it comprises input shaft (1), A output shaft (2), last transmission shaft (3), lower drive shaft (4) and B output shaft (5), input shaft (1) is provided with input gear (6), A output shaft termination gear (7) engagement on input gear (6) and the A output shaft (2), also be provided with A output shaft intermediate gear (8) on the A output shaft (2), A output shaft intermediate gear (8) simultaneously with last transmission shaft (3) on C gear (9) and the E gear (10) on the lower drive shaft (4) mesh, also be provided with thrust-bearing (15) on the A output shaft (2), B output shaft (5) is provided with B output shaft gear (13), also be provided with tandem thrust-bearing (14) on the B output shaft (5), B output shaft gear (13) simultaneously with last transmission shaft (3) on D gear (11) and the F gear (12) on the lower drive shaft (4) mesh.
2. the high moment of torsion high rotation speed gear box of parallel double-screw according to claim 1 is characterized in that: the shaft core line of the B output shaft (5) in the gear-box, and the shaft axis of the gear that is meshed with gear on the B output shaft is at grade.
3. according to claim 1, the high moment of torsion high rotation speed gear box of 2 described parallel double-screws, it is characterized in that: the shaft core line of the B output shaft (5) in the gear-box, and the angle of the plane that shaft axis constituted of the gear that is meshed with gear on the B output shaft and vertical plane formation is in-25 °～0 °～25 ° scopes.
4. the high moment of torsion high rotation speed gear box of parallel double-screw according to claim 1 is characterized in that: it is zero that radial force that the B output shaft (5) in the described gear-box is suffered and axial force are offset, and is pure torsion or the output of approximate pure torsion.
5. the high moment of torsion high rotation speed gear box of parallel double-screw according to claim 1 is characterized in that: A output shaft (2), B output shaft (5) two output shaft centre distance in the described gear-box are 15～270mm, screw diameter 19～320mm.
6. the high moment of torsion high rotation speed gear box of parallel double-screw according to claim 1 is characterized in that: the A output shaft (2) in the described gear-box, the output speed of B output shaft (5) two output shafts are 400～1800rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035349 CN2821288Y (en) | 2005-09-02 | 2005-09-02 | Parallel double screw high torque high rotation speed gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035349 CN2821288Y (en) | 2005-09-02 | 2005-09-02 | Parallel double screw high torque high rotation speed gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821288Y true CN2821288Y (en) | 2006-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035349 Expired - Fee Related CN2821288Y (en) | 2005-09-02 | 2005-09-02 | Parallel double screw high torque high rotation speed gearbox |
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| CN (1) | CN2821288Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149305A (en) * | 2014-07-24 | 2014-11-19 | 北京化工大学 | Efficient mixing extruder with screw rod distributed annularly in different directions |
| CN105179651A (en) * | 2015-08-12 | 2015-12-23 | 南京聚力化工机械有限公司 | Dual-input gear pair type high-torque gearbox |
| CN107620790A (en) * | 2016-07-15 | 2018-01-23 | 上海金湖挤出设备有限公司 | Large-scale vertical conical-double -helical rod gear-box |
| CN109228223A (en) * | 2018-09-20 | 2019-01-18 | 江阴市得灵机械有限公司 | A kind of high torsion anisotropic parallel twin-screw structure |
| WO2024087253A1 (en) * | 2022-10-24 | 2024-05-02 | 五邑大学 | Extruder and extrusion processing method |
-
2005
- 2005-09-02 CN CN 200520035349 patent/CN2821288Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104149305A (en) * | 2014-07-24 | 2014-11-19 | 北京化工大学 | Efficient mixing extruder with screw rod distributed annularly in different directions |
| CN105179651A (en) * | 2015-08-12 | 2015-12-23 | 南京聚力化工机械有限公司 | Dual-input gear pair type high-torque gearbox |
| CN107620790A (en) * | 2016-07-15 | 2018-01-23 | 上海金湖挤出设备有限公司 | Large-scale vertical conical-double -helical rod gear-box |
| CN109228223A (en) * | 2018-09-20 | 2019-01-18 | 江阴市得灵机械有限公司 | A kind of high torsion anisotropic parallel twin-screw structure |
| WO2024087253A1 (en) * | 2022-10-24 | 2024-05-02 | 五邑大学 | Extruder and extrusion processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20100902 |