CN204921855U - Diesel engine geared drive structure of low noise - Google Patents
Diesel engine geared drive structure of low noise Download PDFInfo
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- CN204921855U CN204921855U CN201520684624.XU CN201520684624U CN204921855U CN 204921855 U CN204921855 U CN 204921855U CN 201520684624 U CN201520684624 U CN 201520684624U CN 204921855 U CN204921855 U CN 204921855U
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- gear
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- hydraulic pump
- crankshaft
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Abstract
The utility model provides a diesel engine geared drive structure of low noise, including camshaft timing gear, crankshaft timing gear, right time the idler gear, carrier gear, hydraulic pump gear and injection pump timing gear, mesh respectively on the idler gear right time has camshaft timing gear, crankshaft timing gear, carrier gear and injection pump timing gear, the last meshing of carrier gear has the hydraulic pump gear, crankshaft timing gear, right time the idler gear, the normal modulus of carrier gear and hydraulic pump gear is 2.5-2.75, the helical angle is 17-22, the addendum coefficient is 1.2-1.5. Its parameter through modifing the gear, it is high only to have increased the gear teeth, and the driven contact ratio and overlap ratio of high tooth wheel can be carried in the tooth depth increase, increases driven stationarity, need not carry the machining precision of each spare part of high tooth train simultaneously to keep other spare parts except that the gear general, effectively reduce the noise that the gear drive system produced under the prerequisite that increases less cost.
Description
Technical field:
The utility model relates to the technical field of motor, more specifically to a kind of diesel engine gear transmission structure of low noise.
Background technique:
Along with the fast development of Chinese national economy, user is more and more tighter to the noise requirements of non-rice habitats movable type mechanical, on the diesel engine fork truck especially below 5 tons, has more and more stronger noise reduction demand to supporting diesel engine.Current domestic this type of fork truck supporting diesel engine discharge capacity mostly between 2 ~ 3.5 liters, its application gear transmission structure similar, so all there is noise problem bigger than normal.
And the noise reducing pinion unit is at present applied more method and is had two kinds: the precision 1, improving each component in pinion unit, wherein just includes the machining accuracy of gear; 2, reduce the modulus of gear, add large helix angle.Although above-mentioned two kinds of methods can play the effect reducing noise, but first method significantly can increase the processing cost of component, and second method can weaken the intensity of gear, increase the axial force of system, reduce the transmission efficiency of train, also likely bring integrally-built great change.
Model utility content:
The purpose of this utility model is exactly the deficiency for prior art, and a kind of diesel engine gear transmission structure of low noise is provided, it rectifies and improves gear parameter, only rectify and improve the tooth depth of gear, improve gear-driven contact ratio, increase the stationarity of transmission, and effectively reduce the noise of gear train assembly generation.
Technology solution of the present utility model is as follows:
A kind of diesel engine gear transmission structure of low noise, comprise camshaft timing gear, crankshaft timing gear, timing idle gear, carrier gear, hydraulic pump gear and Injection Pump timing gear, timing idle gear is engaged with camshaft timing gear respectively, crankshaft timing gear, carrier gear and Injection Pump timing gear, carrier gear is engaged with hydraulic pump gear, crankshaft timing gear, timing idle gear, the normal module of carrier gear and hydraulic pump gear is 2.5 ~ 2.75, helix angle is 17 ° ~ 22 °, crankshaft timing gear, timing idle gear, the addendum coefficient of carrier gear and hydraulic pump gear is 1.2 ~ 1.5.
The number of teeth of described crankshaft timing gear is 22 ~ 24, timing idle gear the number of teeth be 42 ~ 47, the number of teeth of carrier gear is 38 ~ 42, and the number of teeth of hydraulic pump gear is 22 ~ 24.
Equal 20 ° of the pressure angle of described crankshaft timing gear, timing idle gear, carrier gear and hydraulic pump gear.
The beneficial effects of the utility model are:
It is by the parameter of amendment gear, only increase the tooth depth of gear, tooth depth increases can improve gear-driven contact ratio, increase the stationarity of transmission, do not need the machining accuracy improving each component of train of gearings simultaneously, and keep other universal component except gear, under the prerequisite increasing less cost, effectively reduce the noise that gear train assembly produces.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
In figure: 1, camshaft timing gear; 2, crankshaft timing gear; 3, timing idle gear; 4, carrier gear; 5, hydraulic pump gear; 6, Injection Pump timing gear.
Embodiment:
Embodiment: as shown in Figure 1, a kind of diesel engine gear transmission structure of low noise, comprise camshaft timing gear 1, crankshaft timing gear 2, timing idle gear 3, carrier gear 4, hydraulic pump gear 5 and Injection Pump timing gear 6, timing idle gear 3 is engaged with camshaft timing gear 1 respectively, crankshaft timing gear 2, carrier gear 4 and Injection Pump timing gear 6, carrier gear 4 is engaged with hydraulic pump gear 5, crankshaft timing gear 2, timing idle gear 3, the normal module of carrier gear 4 and hydraulic pump gear 5 is 2.5 ~ 2.75, helix angle is 17 ° ~ 22 °, crankshaft timing gear 2, timing idle gear 3, the addendum coefficient of carrier gear 4 and hydraulic pump gear 5 is 1.2 ~ 1.5.
The number of teeth of described crankshaft timing gear 2 is 22 ~ 24, timing idle gear 3 the number of teeth be 42 ~ 47, the number of teeth of carrier gear 4 is 38 ~ 42, and the number of teeth of hydraulic pump gear 5 is 22 ~ 24.
Equal 20 ° of the pressure angle of described crankshaft timing gear 2, timing idle gear 3, carrier gear 4 and hydraulic pump gear 5.
Working principle: the motor inside crankshaft timing gear 2 that the utility model adopts, timing idle gear 3, the gear parameter of carrier gear 4 and hydraulic pump gear 5 is revised, do not reduce the modulus of gear and increase helix angle, and the gear parameter of its amendment have impact on the tooth depth of gear, increase tooth depth, tooth depth increases can improve gear-driven contact ratio, increase the stationarity of transmission, do not need the machining accuracy improving each component of train of gearings simultaneously, and keep other universal component except gear, the noise that gear train assembly produces effectively is reduced under the prerequisite increasing less cost.
Claims (3)
1. the diesel engine gear transmission structure of a low noise, comprise camshaft timing gear (1), crankshaft timing gear (2), timing idle gear (3), carrier gear (4), hydraulic pump gear (5) and Injection Pump timing gear (6), timing idle gear (3) is engaged with respectively camshaft timing gear (1), crankshaft timing gear (2), carrier gear (4) and Injection Pump timing gear (6), carrier gear (4) is engaged with hydraulic pump gear (5), it is characterized in that: crankshaft timing gear (2), timing idle gear (3), the normal module of carrier gear (4) and hydraulic pump gear (5) is 2.5 ~ 2.75, helix angle is 17 ° ~ 22 °, crankshaft timing gear (2), timing idle gear (3), the addendum coefficient of carrier gear (4) and hydraulic pump gear (5) is 1.2 ~ 1.5.
2. the diesel engine gear transmission structure of a kind of low noise according to claim 1, it is characterized in that: the number of teeth of described crankshaft timing gear (2) is 22 ~ 24, timing idle gear (3) the number of teeth be 42 ~ 47, the number of teeth of carrier gear (4) is 38 ~ 42, and the number of teeth of hydraulic pump gear (5) is 22 ~ 24.
3. according to the diesel engine gear transmission structure of a kind of low noise according to claim 1 or claim 2, it is characterized in that: equal 20 ° of the pressure angle of described crankshaft timing gear (2), timing idle gear (3), carrier gear (4) and hydraulic pump gear (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684624.XU CN204921855U (en) | 2015-09-07 | 2015-09-07 | Diesel engine geared drive structure of low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684624.XU CN204921855U (en) | 2015-09-07 | 2015-09-07 | Diesel engine geared drive structure of low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921855U true CN204921855U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520684624.XU Active CN204921855U (en) | 2015-09-07 | 2015-09-07 | Diesel engine geared drive structure of low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725185A (en) * | 2017-10-26 | 2018-02-23 | 安徽全柴动力股份有限公司 | A kind of non-rice habitats engine PTO wheel train structures |
| CN109854365A (en) * | 2018-12-29 | 2019-06-07 | 昆明云内动力股份有限公司 | A kind of noise-reduction type engine gear transmission system |
-
2015
- 2015-09-07 CN CN201520684624.XU patent/CN204921855U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725185A (en) * | 2017-10-26 | 2018-02-23 | 安徽全柴动力股份有限公司 | A kind of non-rice habitats engine PTO wheel train structures |
| CN109854365A (en) * | 2018-12-29 | 2019-06-07 | 昆明云内动力股份有限公司 | A kind of noise-reduction type engine gear transmission system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |