CN103375549A - Two-speed reducer - Google Patents
Two-speed reducer Download PDFInfo
- Publication number
- CN103375549A CN103375549A CN2012101188220A CN201210118822A CN103375549A CN 103375549 A CN103375549 A CN 103375549A CN 2012101188220 A CN2012101188220 A CN 2012101188220A CN 201210118822 A CN201210118822 A CN 201210118822A CN 103375549 A CN103375549 A CN 103375549A
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- gear
- wheel device
- free wheel
- input shaft
- output shaft
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Abstract
The invention relates to a two-speed reducer and belongs to the field of reduction equipment. The two-speed reducer comprises a box body. An input shaft and an output shaft are mounted in the box body. A first gear and a second gear are axially mounted on the input shaft. A third gear and a fourth gear are axially mounted on the output shaft. A first overrun clutch is mounted between the first gear and the input shaft. A second overrun clutch operating in a direction opposite to that of the first overrun clutch is mounted between the second gear and the input shaft. The first gear meshes with the third gear through a first gear drive chain. The second gear meshes with the fourth gear through a second gear drive chain. The two-speed reducer has the advantages that the same output shaft can output different speeds by changing the rotating direction of the input shaft; the two-speed reducer is simple in structure, convenient to use and high in operating efficiency; the output shaft can output speeds in the same direction or different directions by setting the parity of meshing times of gear teeth in the first gear drive chain and the second gear drive chain.
Description
Technical field
The present invention relates to a kind of two-speed gearbox, belong to the speed reducer device field.
Background technique
Speed reducer has the reduction rotating speed, increases the effect of torque, and is widely used in traffic, machinery and the daily living article.But the output shaft of traditional speed reducer usually can only outbound course, the constant rotating speed of size, uses to have narrow limitation.When some field needs friction speed, need to change motor, use inconvenient.Although the speed reducer of exportable friction speed is also arranged on the market, the technological scheme that usually adopts is at same speed reducer a plurality of output shafts to be set, this kind mode complex structure, and it is large to take up room, and uses inconvenience, inefficiency.For example (1), for the beam pumping unit that recovers the oil, when starting, the motor that required power is larger drives, and just can come with the motor of power less drive work after driving.Because in the equipment operation process, be not easy to realize the conversion between the motor that the larger motor of power and relative power is less, so in the overall work process, come work with the larger motor of power always, the phenomenon that low load with strong power occurred, the motor working efficiency low-loss is large, and waste of energy is very large; (2), it is that band load starts that the belt conveyor that is used for harbour, colliery has some, power when power demand is much larger than normal operation during startup in order to address this problem, often adopts dual-motor to start the work post mode of single motor operation, yet, when the separate unit motor moved, another motor and speed reducer be passive rotation still, after belt, cylinder drive speed reducer and motor rotation, resistance is very large, has increased the energy consumption of operation motor meaninglessly.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: a kind of two-speed gearbox is provided, and it is simple in structure, and is easy to use, and high working efficiency.
Two-speed gearbox of the present invention, comprise casing, input shaft and output shaft are installed in the casing, it is characterized in that: be axially installed with the first gear and the second gear on the input shaft, be axially installed with the 3rd gear and the 4th gear on the output shaft, the first free wheel device is installed between the first gear and the input shaft, the second free wheel device with the first free wheel device clutch opposite direction is installed between the second gear and the input shaft, the first gear is by the first gear transmission chain and the engagement of the 3rd gear, and the second gear is by the second gear transmission chain and the engagement of the 4th gear.
Above-mentioned the first free wheel device and the employed free wheel device of the second free wheel device are prior art, and free wheel device also is unilateral bearing.Free wheel device mainly divides roller-type overrunning clutch, Wedge type over running clutch and slide block type free wheel device etc.Take roller-type overrunning clutch as example, its working principle is described, roller-type overrunning clutch mainly is comprised of inner ring, roller, outer ring, spring and ejector pin etc., and its inner ring is connected with axle during use, and the outer ring is connected with gear.Dual mode is arranged in running, the one: inner ring is driving link, and the outer ring is driven member.When inner ring rotated counterclockwise, roller was driven outer ring rotating by wedging, and clutch engages; When inner ring clockwise rotated, roller was retracted into the sipes position, and the outer ring is then motionless, clutch separation.When the outer ring is driven and the inner ring rotating in same direction by another system, if the outer ring rotating speed is lower than inner ring, clutch engages automatically; If the outer ring rotating speed is higher than inner ring, clutch then separates automatically.The 2nd: the outer ring is driving link, and inner ring is driven member.When the outer ring clockwise rotated, roller was driven inner ring and rotates by wedging, and clutch engages; When the outer ring rotated counterclockwise, roller was retracted into the sipes position, and inner ring is then motionless, clutch separation.When inner ring is driven and the outer ring rotating in same direction by another system, if the inner ring rotating speed is lower than the outer ring, clutch engages automatically; If the inner ring rotating speed is higher than the outer ring, clutch then separates automatically.Wedge type over running clutch and slide block type free wheel device are more because of voussoir and slide block, and bearing capacity is higher, and its working principle is similar to roller clutch.
In the present invention, when input shaft clockwise rotates or rotate counterclockwise, the first gear engages with input shaft under the effect of corresponding free wheel device with a gear in the second gear, gear transmission chain transmission by correspondence, the driver output axle rotates, another gear is in separated state with input shaft under the effect of corresponding free wheel device.When input shaft rotates the direction change, gear on the input shaft and the joint of input shaft and separated state and opposite before, the gear that before is in separated state with input shaft begins transmission, and by corresponding Transmitted chains driver output axle rotation, the gear and the input shaft that engage with input shaft are in separated state before.Therefore, only need the sense of rotation of change input shaft to obtain two rotating speeds that vary in size from same output shaft.When output shaft rotation, although output shaft can be by the gear driven that is connected with output shaft idle one group of gear transmission chain reversing drive wherein, but, since input shaft with its on gear between be equipped with the corresponding free wheel device of clutch state, can not affect the gear transmission chain work of normal operation.When practical application, can by be meshed with driving gear in the second gear transmission chain parity of number of times of the first gear transmission chain is set, obtain the identical or opposite rotating speed of sense of rotation at output shaft.
The present invention adopts above-mentioned free wheel device characteristics, between preferred the 3rd gear and the output shaft the 3rd free wheel device is installed.Between the 3rd gear and output shaft, free wheel device is installed, can be prevented that output shaft drives the first gear transmission chain transmission when the second gear transmission chain is worked.
Wherein, between described the 4th gear and the output shaft the 4th free wheel device is installed.Between the 4th gear and output shaft, free wheel device is installed, can be prevented that output shaft drives the second gear transmission chain transmission when the first gear transmission chain is worked.
The present invention can select different sense of rotation at an input shaft according to the difference of working condition, obtains the sense of rotation of difference (or identical) and the rotating speed (torque) of identical (or different) at another output shaft.When useful application, can select according to the actual requirements the velocity ratio of two gear transmission chains; Can also be according to the frequency of two gear transmission chains use and the quantity of gear transmission chain middle gear, select whether to install between the 3rd gear, the 4th gear and the output shaft free wheel device, if during reversing drive, the Transmitted chains of idle running is shorter, free wheel device can be set, if frequency of utilization is lower or the Transmitted chains of idle running is longer, free wheel device can be installed.
Compared with prior art, the present invention has following beneficial effect:
1, owing to be provided with free wheel device between the gear on the input shaft and input shaft, can be implemented in the effect of output different rotating speeds on the same output shaft by changing the sense of rotation of input shaft, it is simple in structure, and is easy to use, and high working efficiency;
2, in use, can mesh by the first gear transmission chain and the second gear transmission chain middle gear are set the parity of number of times, thereby obtain the identical or opposite rotating speed of direction at output shaft;
3, because employing arranges free wheel device at the 3rd gear and output shaft, can prevent that output shaft drives the first gear transmission chain transmission when the second gear transmission chain is worked;
4, because employing arranges free wheel device at the 4th gear and output shaft, can prevent that output shaft drives the second gear transmission chain transmission when the first gear transmission chain is worked.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Among the figure: 1, the first gear 2, the second gear 3, the second free wheel device 4, input shaft 5, the first free wheel device 6, the first intermediate gear 7, the second intermediate gear 8, casing 9, output shaft 10, the 3rd gear 11, the 4th free wheel device 12, the 4th gear 13, the 4th intermediate gear 14, the 3rd intermediate gear 15, controller 16, motor 17, the 5th intermediate gear 18, the 6th intermediate gear 19, the 3rd free wheel device.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
Embodiment one:
As shown in Figure 1, two-speed gearbox of the present invention, comprise casing 8, input shaft 4 and output shaft 9 are installed in the casing 8, be axially installed with the first gear 1 and the second gear 2 on the input shaft 4, be axially installed with the 3rd gear 10 and the 4th gear 12 on the output shaft 9, the first free wheel device 5 is installed between the first gear 1 and the input shaft 4, the second free wheel device 3 with the first free wheel device 5 clutch opposite directions is installed between the second gear 2 and the input shaft 4, the first gear 1 is by the first gear transmission chain and 10 engagements of the 3rd gear, the second gear 2 is equipped with the 4th free wheel device 11 by the second gear transmission chain and 12 engagements of the 4th gear between the 4th gear 12 and the output shaft 9.
What present embodiment will be realized is: when input shaft 4 clockwise rotated, under the first gear transmission chain effect, output shaft 9 was for clockwise rotating; When input shaft 4 rotated counterclockwise, under the second gear transmission chain effect, output shaft 9 was also for clockwise rotating.
In installation process, the first free wheel device 5 relative input shafts 4 clockwise rotate and are jointing state, the second free wheel device 3 relative input shafts 4 clockwise rotate and are separated state, and this moment, the inner ring of the first free wheel device 5 and the second free wheel device 3 was driving link, and the outer ring is driven member; The 4th free wheel device 11 relative output shafts 9 clockwise rotate and are jointing state, and this moment, the outer ring of the 4th free wheel device 11 was driving link, and inner ring is driven member.
Wherein, the first gear transmission chain is that the first gear 1 meshes by the first intermediate gear 6 and the 3rd gear 10, and the engagement number of times in the gear transmission chain is twice at this moment, can be at the output shaft 9 outputs rotating speed identical with input shaft 4 sense of rotation; The second gear transmission chain is that the second gear 2 is connected with the 4th gear 12 with the 4th intermediate gear 13 by the second intermediate gear 7, the 3rd intermediate gear 14 successively, the second intermediate gear 7 and the 3rd intermediate gear 14 are installed on the same axle, gear transmission chain middle gear engagement this moment number of times is three times, under the effect of the 4th free wheel device 11, can be at the rotating speed of output shaft output with the input shaft opposite direction.
Working procedure:
The output shaft of input shaft 4 with motor 16 is connected, and motor 16 can be by manual control or by controller 15 its forward and backwards of control.Starting electrical machinery 16, when motor 16 clockwise rotates, band driven input shaft 4 clockwise rotates, at this moment, the first free wheel device 5 is jointing state, and the second free wheel device 3 is separated state, input shaft 4 drives the first gear 1 and rotates, the first gear 1 drives the 3rd gear 10 by the first intermediate gear 6 and clockwise rotates, and the 3rd gear 10 drives output shaft 9 and clockwise rotates output speed n1.When output shaft 10 clockwise rotates, can be with the 4th free wheel device 11 inner rings to begin to clockwise rotate, this moment since the rotational velocity of inner ring greater than the rotational velocity of outer ring, the 4th free wheel device 11 is in separated state, so the 4th gear 12 can not rotate.
When motor 16 rotates counterclockwise, band driven input shaft 4 rotates counterclockwise, at this moment, the first free wheel device 5 is separated state, the second free wheel device 3 is jointing state, and input shaft 4 drives the second gear 2 and rotates, and the second gear 2 drives the 4th gear 12 by two intermediate gears 7, the 3rd intermediate gear 14 and the 4th intermediate gear 13 successively and clockwise rotates, under 11 effects of the 4th free wheel device, drive the clockwise rotation speed n 2 of output shaft 9 outputs.When output shaft 9 rotates, also can drive the 3rd gear 10 and clockwise rotate, the 3rd gear 10 drives the first gear 1 by the first intermediate gear 6 and clockwise rotates, and this moment, the first free wheel device 5 was separated state, can not affect the normal operation of the second gear.
Embodiment two:
As shown in Figure 2, two-speed gearbox of the present invention, comprise casing 8, input shaft 4 and output shaft 9 are installed in the casing 8, be axially installed with the first gear 1 and the second gear 2 on the input shaft 4, be axially installed with the 3rd gear 10 and the 4th gear 12 on the output shaft 9, the first free wheel device 5 is installed between the first gear 1 and the input shaft 4, the second free wheel device 3 with the first free wheel device 5 clutch opposite directions is installed between the second gear 2 and the input shaft 4, the first gear 1 is by the first gear transmission chain and 10 engagements of the 3rd gear, the second gear 2 is by the second gear transmission chain and 12 engagements of the 4th gear, be equipped with between the 3rd gear 10 and the output shaft 9 between the 3rd free wheel device 19, the four gears 12 and the output shaft 9 the 4th free wheel device 11 is installed.
What present embodiment will be realized is: when input shaft 4 clockwise rotated, under the first gear transmission chain effect, output shaft 9 was for rotating counterclockwise; When input shaft 4 rotated counterclockwise, under the second gear transmission chain effect, output shaft 9 was for clockwise rotating.
In installation process, the first free wheel device 5 relative input shafts 4 clockwise rotate and are jointing state, the second free wheel device 3 relative input shafts 4 clockwise rotate and are separated state, and this moment, the inner ring of the first free wheel device 5 and the second free wheel device 3 was driving link, and the outer ring is driven member; The 3rd free wheel device 19 relative output shafts 9 rotate counterclockwise and are jointing state, the 4th free wheel device 11 relative output shafts 9 rotate counterclockwise and are separated state, this moment, the outer ring of the 3rd free wheel device 19 and the 4th free wheel device 11 was driving link, and inner ring is driven member.
Wherein, the first gear transmission chain is that the first gear 1 is successively by the 5th intermediate gear 17 and the 6th intermediate gear 18 and 10 engagements of the 3rd gear, engagement number of times in the gear transmission chain is three times at this moment, under 19 effects of the 3rd free wheel device, the rotating speed of output and input shaft 4 direction of rotation on the output shaft 9; The second gear transmission chain is that the second gear 2 is connected with the 4th gear 12 with the 4th intermediate gear 13 by the second intermediate gear 7, the 3rd intermediate gear 14 successively, gear transmission chain middle gear engagement this moment number of times is three times, under 11 effects of the 4th free wheel device, the rotating speed of output and input shaft 4 opposite directions on the output shaft 9.
Working procedure:
The output shaft of input shaft 4 with motor 16 is connected, and motor 16 can be by manual control or by controller 15 its forward and backwards of control.Starting electrical machinery 16, when motor 16 clockwise rotates, band driven input shaft 4 clockwise rotates, and at this moment, the first free wheel device 5 is jointing state, the second free wheel device 3 is separated state, input shaft 4 drives the first gear 1 and rotates, and the first gear 1 drives the 3rd gear 10 by the 5th intermediate gear 17 and the 6th intermediate gear 18 and rotates counterclockwise, under 19 effects of the 3rd free wheel device, drive output shaft 9 and rotate counterclockwise output speed n1.Output shaft 9 rotates counterclockwise, because the 4th free wheel device 11 is separated state, so the 4th gear 12 can not rotate.
When motor 16 rotates counterclockwise, band driven input shaft 4 rotates counterclockwise, at this moment, the first free wheel device 5 is separated state, the second free wheel device 3 is jointing state, and input shaft 4 drives the second gear 2 and rotates, and the second gear 2 drives the 4th gear 12 by two intermediate gears 7, the 3rd intermediate gear 14 and the 4th intermediate gear 13 successively and clockwise rotates, under 11 effects of the 4th free wheel device, the clockwise rotation speed n 2 of output shaft 9 outputs.Output shaft 9 clockwise rotates, because the 3rd free wheel device 19 is separated state, so the 3rd gear 10 can not rotate.
Claims (3)
1. two-speed gearbox, comprise casing (8), input shaft (4) and output shaft (9) are installed in the casing (8), it is characterized in that: be axially installed with the first gear (1) and the second gear (2) on the input shaft (4), be axially installed with the 3rd gear (10) and the 4th gear (12) on the output shaft (9), between the first gear (1) and the input shaft (4) the first free wheel device (5) is installed, the second free wheel device (3) with the first free wheel device (5) clutch opposite direction is installed between the second gear (2) and the input shaft (4), the first gear (1) is by the first gear transmission chain and the 3rd gear (10) engagement, and the second gear (2) is by the second gear transmission chain and the 4th gear (12) engagement.
2. two-speed gearbox according to claim 1 is characterized in that: between described the 3rd gear (10) and the output shaft (9) the 3rd free wheel device (19) is installed.
3. two-speed gearbox according to claim 1 and 2 is characterized in that: between described the 4th gear (12) and the output shaft (9) the 4th free wheel device (11) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101188220A CN103375549A (en) | 2012-04-20 | 2012-04-20 | Two-speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101188220A CN103375549A (en) | 2012-04-20 | 2012-04-20 | Two-speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103375549A true CN103375549A (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101188220A Pending CN103375549A (en) | 2012-04-20 | 2012-04-20 | Two-speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103375549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701249A (en) * | 2019-08-27 | 2020-01-17 | 中国航空工业集团公司西安飞行自动控制研究所 | Parallel type dual-redundancy electric steering engine based on overrunning clutch |
| CN112125188A (en) * | 2020-10-09 | 2020-12-25 | 贵州航天林泉电机有限公司 | Bidirectional different-speed transmission structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672944Y (en) * | 2003-12-22 | 2005-01-19 | 重庆永旺科技发展有限公司 | Rocking arm generator |
| CN1971083A (en) * | 2006-11-28 | 2007-05-30 | 张�雄 | Mechanical transmission and speed changing gear |
| CN201723662U (en) * | 2010-03-16 | 2011-01-26 | 马加良 | Two-grade gear change mechanism of electrically-propelled vehicle |
| CN101968103A (en) * | 2010-11-23 | 2011-02-09 | 左佳奇 | Forward and reverse full-overrun gear shifting mechanism |
| CN202545707U (en) * | 2012-04-20 | 2012-11-21 | 山东金鹏石化设备有限公司 | Double-speed speed reducer |
-
2012
- 2012-04-20 CN CN2012101188220A patent/CN103375549A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2672944Y (en) * | 2003-12-22 | 2005-01-19 | 重庆永旺科技发展有限公司 | Rocking arm generator |
| CN1971083A (en) * | 2006-11-28 | 2007-05-30 | 张�雄 | Mechanical transmission and speed changing gear |
| CN201723662U (en) * | 2010-03-16 | 2011-01-26 | 马加良 | Two-grade gear change mechanism of electrically-propelled vehicle |
| CN101968103A (en) * | 2010-11-23 | 2011-02-09 | 左佳奇 | Forward and reverse full-overrun gear shifting mechanism |
| CN202545707U (en) * | 2012-04-20 | 2012-11-21 | 山东金鹏石化设备有限公司 | Double-speed speed reducer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701249A (en) * | 2019-08-27 | 2020-01-17 | 中国航空工业集团公司西安飞行自动控制研究所 | Parallel type dual-redundancy electric steering engine based on overrunning clutch |
| CN110701249B (en) * | 2019-08-27 | 2022-11-22 | 中国航空工业集团公司西安飞行自动控制研究所 | Parallel type dual-redundancy electric steering engine based on overrunning clutch |
| CN112125188A (en) * | 2020-10-09 | 2020-12-25 | 贵州航天林泉电机有限公司 | Bidirectional different-speed transmission structure |
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Application publication date: 20131030 |