CN101328958A - Internal and external circumference difference ratio hobbing portable speed reducer - Google Patents
Internal and external circumference difference ratio hobbing portable speed reducer Download PDFInfo
- Publication number
- CN101328958A CN101328958A CNA2008100125872A CN200810012587A CN101328958A CN 101328958 A CN101328958 A CN 101328958A CN A2008100125872 A CNA2008100125872 A CN A2008100125872A CN 200810012587 A CN200810012587 A CN 200810012587A CN 101328958 A CN101328958 A CN 101328958A
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- China
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- gear
- speed reducer
- gear ring
- hobbing
- input shaft
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Abstract
The invention provides a portable speed reducer with difference of an inner circumference and an outer circumference to a gear hobbing, solving the problems of complex structure, large volume, high manufacturing cost and so on existing in the prior speed reducer. The speed reducer comprises an input shaft, wherein, a gear is arranged on the input shaft. The invention is characterized in that a gear ring with an inner gear is arranged outside the gear; a plurality of gear hobbings which are meshed with the gear and the inner gear are arranged between the gear and the inner gear of the gear ring; the gear transmits power to the gear ring through the gear hobbings and drives the gear ring to rotate so as to realize speed reduction function. The portable speed reducer has the advantages of simple structure, small volume, difficulty reduction in manufacturing and assembling, material conservation and manufacturing cost reduction; meanwhile, the portable speed reducer changes the action mode of force, reduces energy consumption, has a wide application range, and can be applied to various machines. The portable speed reducer has a large speed ratio, under a normal condition, the speed ratio of the portable speed reducer can reach 10 to 1, when the diameter of the gear ring is about 10cm; a rotation direction of input accords with a rotation direction of output, so the portable speed reducer has an excellent buffering performance, and is applicable to an off-road vehicle.
Description
Technical field
The invention belongs to a kind of retarder, particularly a kind of internal and external circumference difference ratio hobbing portable speed reducer.
Background technique
Speed reducer is mechanically operated important component part, extensive use in machinery.Along with science and technology development, Design of Mechanical Structure is compact and simple and direct further, and is also more and more higher to the requirement of speed reducer, as high pulling torque, big speed ratio and high transmission accuracy etc., simultaneously, requires its volume the smaller the better.
At present, the product of speed reducer market circulation is coaxial-type mostly, as cycloid speed reducer; Parallel-axis type as the hard-tooth surface speed reducer of ZY series; And the speed reducer of some other form.ZY series hard-tooth surface speed reducer meets the requirement of high pulling torque transmission, but velocity ratio needs multistage transmission when big, and volume is relatively large, and is relatively heavier.The cycloid speed reducer transmission accuracy is higher relatively, but when velocity ratio is big, also need adopt secondary or three grades of type of belt drive, and its volume is increased, and because the restriction of this body structure, output torque is not very high.The speed reducer of some other form, as planet-gear speed reducer, its planetary pinion series connection at different levels are used, the structure more complicated, assembling difficulty is big, and is difficult to keep precision in the manufacture process; And each member must bear high rotating speed, high capacity, and therefore, high especially to the greasy property requirement, especially the bearing of carrier gear must be set oil-way system to provide lubricated, therefore, the structure more complicated, cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes problems such as complex structure that existing speed reducer exists, bulky, manufacture cost height, and a kind of simple in structure, volume is little, cost is low internal and external circumference difference ratio hobbing portable speed reducer is provided.
The present invention has an input shaft, gear is housed on input shaft, its special way is, the gear ring of band internal tooth is housed in the outside of gear, between the internal tooth of gear and gear ring, the gear hobbing that several are meshed with it is housed, gear is given gear ring by gear hobbing with transmission of power, and carries its rotation, realizes deceleration.
Speed change gear also is housed between the internal tooth of input shaft and gear ring, described speed change gear is made of the friction plate of band internal tooth and the friction plate and the gland of band external tooth, on input shaft, also be provided with gear, the friction plate of band internal tooth is installed on the gear of input shaft, the friction plate of band external tooth is installed on the internal tooth of gear ring, the friction plate of band external tooth and the alternate setting of friction plate of band internal tooth, gland is installed in the end of friction plate, realizes stepless change by speed change gear.
Front portion at gear ring also is provided with gear, and the gear ring of band internal tooth is housed in the outside of this gear, between the internal tooth of gear and gear ring the gear hobbing that several are meshed with it is housed, the transmission of realization secondary.
The invention has the advantages that:
1, simple in structure, volume is little, has both reduced the difficulty of making and assembling, and has saved material again, has reduced cost of production, simultaneously, has also changed the mode of action of power, has reduced the loss of the energy, and of many uses, is applicable to various machines.
2, speed ratio is big, under normal circumstances, about 10 centimeters of diameter ring gears, its speed ratio can reach 10: 1.
3, output is consistent with the sense of rotation of input, thereby its resiliency is good, and as the present invention is installed on the vehicle, cycling start is better than conventional retarder when sliding behind vehicle, so, be very suitable for go-anywhere vehicle and use.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of another embodiment of the present invention.
Embodiment
Embodiment 1:
As depicted in figs. 1 and 2, the present invention has an input shaft 3, and gear 4 is housed on input shaft 3, and gear 4 is keyed on the input shaft 3; The gear ring 1 of band internal tooth is housed in the outside of gear 4, and gear ring 1 is an output terminal, between gear ring 1 and input shaft 3 bearing 2 is housed, and is concentric to guarantee between gear ring 1 and the input shaft 3; Between the internal tooth of gear 4 and gear ring 1, several gear hobbings that is meshed with it 5 are housed, the quantity of described gear hobbing 5 is not limit, determine according to the space between the internal tooth of gear 4 and gear ring 1, but between the adjacent gear hobbing 5 enough distances should be arranged, avoid it to be in contact with one another, the modulus of described gear 4, gear ring 1 and gear hobbing 5 is identical, so that be meshing with each other, gear 4 is given gear ring 1 by gear hobbing 5 with transmission of power, and carries its rotation, realize deceleration, if the number of teeth of gear ring 1 is Z
1, the number of teeth of gear 4 is Z
2, then the velocity ratio of mechanism is I=2 * Z
1/ Z
1-Z
2, adjust tooth number Z
1And Z
2Can obtain various required gear ratio value; Between the internal tooth of input shaft 3 and gear ring 1, speed change gear is housed also, described speed change gear is made of the friction plate 7 of band internal tooth and the friction plate 6 and the gland 8 of band external tooth, on input shaft 3, also be provided with gear 3a, the friction plate 7 of band internal tooth is installed on the gear 3a of input shaft 3, the friction plate 6 of band external tooth is installed on the internal tooth of gear ring 1, the friction plate 6 of band external tooth and the friction plate 7 alternate settings of band internal tooth, gland 8 is installed in the end of friction plate 6, friction plate 7, realizes stepless change by speed change gear; Connecting rod 9 also is housed on gear ring 1, connecting rod 9 passes gland 8, on connecting rod 9, the outside of gland 8 is equipped with spring 10 and locking cap 11, spring 10 plays the effect of compression gland 8, described gland 8 is connected with the centrifugal rubbish dish that pushes away when reality is used, centrifugally push away rubbish dish and spring 10 actings in conjunction, utilize centrifugal rubbish dish and the spring 10 of pushing away to make and be in contact with one another between gear 4, friction plate 6, friction plate 7 and the gland 8 or throw off mutually in gland 8; When gear 4, friction plate 6, friction plate 7 and gland 8 contact fully, gear ring 1 is identical with input shaft 3 rotating speeds, its velocity ratio is 1, and when gear 4, friction plate 6, friction plate 7 and gland 8 connect disengagement fully, the velocity ratio between gear ring 1 and the input shaft 3 was by aforementioned formula: I=2 * Z
1/ Z
1-Z
2Determine, when gear 4, friction plate 6, friction plate 7 and gland 8 from disengaging to contact fully fully, or from touching fully when throwing off fully, the present invention has just realized stepless change.
Embodiment 2:
As shown in Figure 3, its structure such as embodiment 1, difference is, front portion at gear ring 12 also is provided with gear 12a, the gear ring 14 of band internal tooth is housed in the outside of this gear 12a, between the internal tooth of gear 12a and gear ring 14, several gear hobbings that is meshed with it 5 is housed, the transmission of realization secondary; Between input shaft 13 and gear ring 14, bearing 15 is housed, concentric to guarantee between gear ring 14 and the input shaft 13.
Concrete working procedure of the present invention is: when input shaft 3 rotations, drive gear hobbing 5 and rotate in the opposite direction, drive 5 drives of gear hobbing gear ring 1 and rotate in the opposite direction, promptly input shaft 3 carries gear ring 1 by gear hobbing 5 and does rotation in the same way, realize deceleration, if the number of teeth of gear ring 1 is Z
1Be 100, the number of teeth of gear 4 is Z
2Be 80, by aforementioned formula: I=2 * Z
1/ Z
1-Z
2, then the velocity ratio of mechanism is I=2 * 100/100-80=10, corresponding change Z
1And Z
2, perhaps increase the progression of transmission, can develop out multiple velocity ratio.
Claims (3)
1, a kind of internal and external circumference difference ratio hobbing portable speed reducer, it has an input shaft, and gear is housed on input shaft, it is characterized in that, the gear ring of band internal tooth is housed in the outside of gear, between the internal tooth of gear and gear ring, the gear hobbing that several are meshed with it is housed.
2, internal and external circumference difference ratio hobbing portable speed reducer according to claim 1, it is characterized in that, speed change gear also is housed between the internal tooth of input shaft and gear ring, described speed change gear is made of the friction plate of band internal tooth and the friction plate and the gland of band external tooth, on input shaft, also be provided with gear, the friction plate of band internal tooth is installed on the gear of input shaft, the friction plate of band external tooth is installed on the internal tooth of gear ring, the friction plate of band external tooth and the alternate setting of friction plate of band internal tooth, gland is installed in the end of friction plate.
3, internal and external circumference difference ratio hobbing portable speed reducer according to claim 1 and 2, it is characterized in that, front portion at gear ring also is provided with gear, and the gear ring of band internal tooth is housed in the outside of this gear, between the internal tooth of gear and gear ring the gear hobbing that several are meshed with it is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100125872A CN101328958A (en) | 2008-07-29 | 2008-07-29 | Internal and external circumference difference ratio hobbing portable speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100125872A CN101328958A (en) | 2008-07-29 | 2008-07-29 | Internal and external circumference difference ratio hobbing portable speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101328958A true CN101328958A (en) | 2008-12-24 |
Family
ID=40204913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100125872A Pending CN101328958A (en) | 2008-07-29 | 2008-07-29 | Internal and external circumference difference ratio hobbing portable speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101328958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806338A (en) * | 2010-03-31 | 2010-08-18 | 杨德文 | Differential ratio portable type reducer |
-
2008
- 2008-07-29 CN CNA2008100125872A patent/CN101328958A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806338A (en) * | 2010-03-31 | 2010-08-18 | 杨德文 | Differential ratio portable type reducer |
| CN101806338B (en) * | 2010-03-31 | 2012-07-04 | 杨德文 | Differential ratio portable type reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |