CN202545707U - Double-speed speed reducer - Google Patents
Double-speed speed reducer Download PDFInfo
- Publication number
- CN202545707U CN202545707U CN201220170951XU CN201220170951U CN202545707U CN 202545707 U CN202545707 U CN 202545707U CN 201220170951X U CN201220170951X U CN 201220170951XU CN 201220170951 U CN201220170951 U CN 201220170951U CN 202545707 U CN202545707 U CN 202545707U
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- gear
- wheel device
- free wheel
- input shaft
- output shaft
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Abstract
The utility model relates to a double-speed speed reducer, belonging to the field of speed reducer devices. The speed reducer comprises a box body, wherein an input shaft and an output shaft are installed inside the box body; a first gear and a second gear are installed on the input shaft axially; a third gear and a fourth gear are installed on the output shaft axially; an overrunning clutch is installed between the first gear and the input shaft; a second overrunning clutch whose clutch direction is opposite to that of the first overrunning clutch is installed between the second gear and the input shaft; the first gear is meshed with the third gear through a first gear transmission chain; and the second gear is meshed with the fourth gear through a second gear transmission chain. With the adoption of the speed reducer, the rotation direction of the input shaft is changed, different rotation speeds can be output from one same output shaft, so that the speed reducer is simple in structure, convenient to use and high in working efficiency; and moreover, rotation speeds in same direction or opposite directions can be obtained from the output shaft by setting the parity of the meshing times of the gears in the first gear transmission chain and the second gear transmission chain.
Description
Technical field
The utility model relates to a kind of two-speed gearbox, belongs 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.Though the speed reducer of exportable friction speed is also arranged on the market, the technological scheme that adopts usually is that a plurality of output shafts are set on same speed reducer, this kind mode complex structure, and it is big to take up room, and uses inconvenience, inefficiency.For example (1), the beam pumping unit that is used to recover the oil, when starting, the motor that required power is bigger drives, and after driving, just can come drive work with the less relatively motor of power.Because in the equipment operation process; Be not easy to realize the conversion between the motor that the big motor of power and relative power is less; So in the overall operation process, come work with the bigger motor of power always; The phenomenon that low load with strong power occurred, the motor working efficiency low-loss is big, and waste of energy is very big; (2), it is that band load starts that the belt conveyor that is used for harbour, colliery has some, the power when power demand is much larger than normal operation during startup; In order to address this problem, often adopt dual-motor to start the work post mode that single motor moves, yet; When the separate unit motor moved, the still passive rotation of another motor and speed reducer was after belt, cylinder drive speed reducer and motor rotation; Resistance is very big, has increased the energy consumption of operation motor meaninglessly.
The model utility content
According to above deficiency of the prior art, the technical problem that the utility model will solve is: a kind of two-speed gearbox is provided, and it is simple in structure, and is easy to use, and high working efficiency.
The described two-speed gearbox of the utility model; Comprise casing; Input shaft and output shaft are installed in the casing, it is characterized in that: be axially installed with first gear and second gear on the input shaft, be axially installed with the 3rd gear and the 4th gear on the output shaft; First free wheel device is installed between first gear and the input shaft; Second free wheel device in the opposite direction with the first free wheel device clutch is installed between second gear and the input shaft, and first gear is through first gear transmission chain and the 3rd gear engagement, and second gear is through second gear transmission chain and the 4th gear engagement.
Above-mentioned first free wheel device and the employed free wheel device of second free wheel device are existing technology, 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.With the roller-type overrunning clutch is example, and its working principle is described, roller-type overrunning clutch mainly is made up 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 a driving link, and the outer ring is a driven member.When inner ring rotated counterclockwise, roller was driven the outer ring and rotates by wedging, clutch; When inner ring clockwise rotated, roller was retracted into the sipes position, and the outer ring is then motionless, clutch separation.Rotate in the same way when the outer ring is driven with inner ring 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 a driving link, and inner ring is a driven member.When the outer ring clockwise rotated, roller was driven inner ring and rotates by wedging, clutch; When the outer ring rotated counterclockwise, roller was retracted into the sipes position, and inner ring is then motionless, clutch separation.Rotate in the same way when inner ring is driven with the outer ring 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 with roller clutch.
In the utility model; When input shaft clockwise rotates or rotate counterclockwise; First gear engages with input shaft under the effect of pairing free wheel device with a gear in second gear, through the gear transmission chain-driven of correspondence, drives output shaft and rotates; Another gear is in separated state with input shaft under the effect of pairing free wheel device.When input shaft rotates the direction change; Gear on the input shaft engages and separated state and opposite before with input shaft; The gear that before is in separated state with input shaft begins transmission; And through corresponding Transmitted chains driving output shaft rotation, the gear and the input shaft that engage with input shaft are in separated state before.Therefore, the sense of rotation that only needs to change input shaft can obtain two rotating speeds that vary in size from same output shaft.When output shaft rotates; Though output shaft can be through the wherein idle one group of gear transmission chain reversing drive of the gear driven that is connected with output shaft; But; Owing to be equipped with the corresponding free wheel device of clutch state between input shaft and the gear on it, can not influence the gear transmission chain work of proper functioning.When practical application, can on output shaft, obtain the identical or opposite rotating speed of sense of rotation through the be meshed parity of number of times of driving gear in first gear transmission chain and second gear transmission chain is set.
The utility model 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-driven when second gear transmission chain is worked.
Wherein, between said 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-driven when first gear transmission chain is worked.
The utility model can be selected different sense of rotation according to the difference of working condition on an input shaft, on another output shaft, obtain the sense of rotation of difference (or identical) and the rotating speed (torque) of identical (or different).When useful application, can select the velocity ratio of two gear transmission chains according to the actual requirements; 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, and free wheel device can be set; If frequency of utilization Transmitted chains low or idle running is longer, free wheel device can be installed.
Compared with prior art, the utlity model has following beneficial effect:
1, owing between gear on the input shaft and input shaft, be provided with free wheel device, can be implemented in the effect of output different rotating speeds on the same output shaft through 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 through be provided with first gear transmission chain and the second gear transmission chain middle gear engagement number of times parity, thereby on output shaft, obtain the identical or opposite rotating speed of direction;
3, owing to being employed on the 3rd gear and the output shaft free wheel device is set, can prevents that output shaft drives the first gear transmission chain-driven when second gear transmission chain is worked;
4, owing to being employed on the 4th gear and the output shaft free wheel device is set, can prevents that output shaft drives the second gear transmission chain-driven when first gear transmission chain is worked.
Description of drawings
Fig. 1 is the utility model embodiment one a structural representation;
Fig. 2 is the utility model embodiment two a structural representation;
Among the figure: 1, first gear 2, second gear 3, second free wheel device 4, input shaft 5, first free wheel device 6, first intermediate gear 7, 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 utility model is done and to be further described:
Embodiment one:
As shown in Figure 1; The described two-speed gearbox of the utility model; Comprise casing 8, input shaft 4 and output shaft 9 are installed in the casing 8, be axially installed with first gear 1 and 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; Be equipped with between first gear 1 and the input shaft 4 to be equipped with between first free wheel device, 5, the second gears 2 and the input shaft 4 and mesh through first gear transmission chain and the 3rd gear 10 with first free wheel device, 5 clutches, second free wheel device, 3, the first gears 1 in the opposite direction; Second gear 2 is equipped with the 4th free wheel device 11 through 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; First free wheel device, 5 relative input shafts 4 clockwise rotate and are jointing state; Second free wheel device, 3 relative input shafts 4 clockwise rotate and are separated state, and this moment, the inner ring of first free wheel device 5 and second free wheel device 3 was a driving link, and the outer ring is a 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 a driving link, and inner ring is a driven member.
Wherein, first gear transmission chain is that first gear 1 meshes through 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 on output shaft 9, export and the identical rotating speed of input shaft 4 sense of rotation; Second gear transmission chain is that second gear 2 is connected with the 4th gear 12 with the 4th intermediate gear 13 through second intermediate gear 7, the 3rd intermediate gear 14 successively; 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 on output shaft, export and input shaft rotating speed in the opposite direction.
Working procedure:
The output shaft of input shaft 4 with motor 16 is connected, and motor 16 can be through manual control or through controller 15 its forward and backwards of control.Starting electrical machinery 16 when motor 16 clockwise rotates, drives input shaft 4 and clockwise rotates; At this moment, first free wheel device 5 is a jointing state, and second free wheel device 3 is a separated state; Input shaft 4 drives first gear 1 and rotates; First gear 1 drives the 3rd gear 10 through 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, drive input shaft 4 and rotate counterclockwise, at this moment; First free wheel device 5 is a separated state; Second free wheel device 3 is a jointing state, and input shaft 4 drives second gear 2 and rotates, and second gear 2 drives the 4th gear 12 through 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 first gear 1 through first intermediate gear 6 and clockwise rotates, and this moment, first free wheel device 5 was a separated state, can not influence the second gear proper functioning.
Embodiment two:
As shown in Figure 2; The described two-speed gearbox of the utility model comprises casing 8, and input shaft 4 and output shaft 9 are installed in the casing 8; Be axially installed with first gear 1 and second gear 2 on the input shaft 4; Be axially installed with on the output shaft 9 to be equipped with between the 3rd gear 10 and the 4th gear 12, the first gears 1 and the input shaft 4 second free wheel device 3 in the opposite direction with 5 clutches of first free wheel device is installed between first free wheel device, 5, the second gears 2 and the input shaft 4; First gear 1 is through first gear transmission chain and 10 engagements of the 3rd gear; Second gear 2 is 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 through second gear transmission chain and 12 engagements of the 4th gear.
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; First free wheel device, 5 relative input shafts 4 clockwise rotate and are jointing state; Second free wheel device, 3 relative input shafts 4 clockwise rotate and are separated state, and this moment, the inner ring of first free wheel device 5 and second free wheel device 3 was a driving link, and the outer ring is a 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 a driving link, and inner ring is a driven member.
Wherein, First gear transmission chain is that first gear 1 is successively through 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; Second gear transmission chain is that second gear 2 is connected with the 4th gear 12 with the 4th intermediate gear 13 through second intermediate gear 7, the 3rd intermediate gear 14 successively; Gear transmission chain middle gear engagement this moment number of times is three times; In the effect of the 4th free wheel device 11 down, output and input shaft 4 rotating speed in the opposite direction on the output shaft 9.
Working procedure:
The output shaft of input shaft 4 with motor 16 is connected, and motor 16 can be through manual control or through controller 15 its forward and backwards of control.Starting electrical machinery 16 when motor 16 clockwise rotates, drives input shaft 4 and clockwise rotates; At this moment, first free wheel device 5 is a jointing state, and second free wheel device 3 is a separated state; Input shaft 4 drives first gear 1 and rotates, and first gear 1 drives the 3rd gear 10 through 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 a separated state, so the 4th gear 12 can not rotate.
When motor 16 rotates counterclockwise, drive input shaft 4 and rotate counterclockwise, at this moment; First free wheel device 5 is a separated state; Second free wheel device 3 is a jointing state, and input shaft 4 drives second gear 2 and rotates, and second gear 2 drives the 4th gear 12 through 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 a 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 first gear (1) and 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 first gear (1) and the input shaft (4) first free wheel device (5) be installed, second free wheel device (3) in the opposite direction with first free wheel device (5) clutch is installed between second gear (2) and the input shaft (4); First gear (1) is through first gear transmission chain and the 3rd gear (10) engagement, and second gear (2) is through second gear transmission chain and the 4th gear (12) engagement.
2. two-speed gearbox according to claim 1 is characterized in that: between said 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 said 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 |
|---|---|---|---|
| CN201220170951XU CN202545707U (en) | 2012-04-20 | 2012-04-20 | Double-speed speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220170951XU CN202545707U (en) | 2012-04-20 | 2012-04-20 | Double-speed speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545707U true CN202545707U (en) | 2012-11-21 |
Family
ID=47166346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220170951XU Expired - Fee Related CN202545707U (en) | 2012-04-20 | 2012-04-20 | Double-speed speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375549A (en) * | 2012-04-20 | 2013-10-30 | 山东金鹏石化设备有限公司 | Two-speed reducer |
-
2012
- 2012-04-20 CN CN201220170951XU patent/CN202545707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375549A (en) * | 2012-04-20 | 2013-10-30 | 山东金鹏石化设备有限公司 | Two-speed reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20190420 |