CN110594383A - Reduction gearbox - Google Patents
Reduction gearbox Download PDFInfo
- Publication number
- CN110594383A CN110594383A CN201910970924.7A CN201910970924A CN110594383A CN 110594383 A CN110594383 A CN 110594383A CN 201910970924 A CN201910970924 A CN 201910970924A CN 110594383 A CN110594383 A CN 110594383A
- Authority
- CN
- China
- Prior art keywords
- gear
- differential
- reduction gearbox
- helical gear
- reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 64
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000003584 silencer Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/12—Differential gearings without gears having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a reduction gearbox, which comprises a gear box body, a reduction box body, a speed reducer assembly, a differential mechanism assembly and a reduction gearbox rear end cover, wherein the speed reducer body and the reduction gearbox rear end cover are respectively arranged at the upper end and the lower end of the gear box body; the speed reducer assembly comprises a speed reducer shaft lever, a large helical gear, a small helical gear, a speed reduction shell and a connecting hub, wherein the large helical gear and the small helical gear are respectively arranged at the upper end and the lower end of the speed reducer shaft lever and are meshed with each other; the differential assembly comprises a differential shell, a large spiral gear, a half axle gear, a differential gear and a differential gear shaft, wherein the large spiral gear and the small spiral gear are mutually meshed, and the two half axle gears are mutually meshed with the two differential gears. The invention has the advantages of ingenious design, compact structure, low noise, reliable sealing, high cost performance and strong practicability.
Description
Technical Field
The invention relates to the technical field of new energy electric vehicles, in particular to a reduction gearbox.
Background
Due to the concern on energy crisis and environmental protection, various large host manufacturers are developing various new energy vehicles and have made progress and breakthrough to a certain extent.
The electric vehicle is an environment-friendly vehicle which can achieve zero emission at present, and has the advantages of low noise, no pollution, simple and convenient operation, novel shape, small volume, portability, flexibility, comfortable and safe operation, stable and reliable performance, convenient maintenance and the like. Due to the requirements of energy conservation and environmental protection, the electric vehicle has entered into a high development trend. Electric automobiles are listed as ten new industrial plans which are mainly supported by China in China, and the electric automobile.
Domestic middle and low end electric tractors and haulage vehicles generally adopt a drive axle and gearbox structure. The left wheel assembly and the right wheel assembly of the drive axle are respectively composed of a hub, a brake drum, a brake and the like, the gearbox adopts a bevel gear pair with arc teeth and a cylindrical gear pair with helical teeth for transmission, the structure is large, the leakage is easy, the noise is high, the noise index is generally 73-78dB (A), and the requirements of electric vehicles are not met. Meanwhile, high-end electric tractors and electric carrying vehicles in the industry generally adopt 2 sets of imported motor driving units to respectively drive left and right wheels so as to control the advancing, reversing, turning and the like of the vehicles, but the price is high, and once a fault occurs, the maintenance is difficult in China.
Disclosure of Invention
The invention aims to: a reduction gearbox is provided to solve the above defects.
In order to achieve the above purpose, the invention provides the following technical scheme:
a reduction gearbox comprises a gearbox body, a reduction gear assembly, a differential assembly and a reduction gearbox rear end cover, wherein the reduction gearbox body and the reduction gearbox rear end cover are respectively arranged at the upper end and the lower end of the gearbox body; the speed reducer assembly comprises a speed reducer shaft rod, a large helical gear, a small helical gear, a speed reducer shell and a connecting hub, wherein the speed reducer shell is fixed on a gear box body through the connecting hub and a bolt; the differential assembly comprises a differential shell, a large spiral gear, a half axle gear, differential gears and differential gear shafts, wherein the half axle gear, the differential gears and the differential gear shafts are arranged in the differential shell, the large spiral gear and the small spiral gear are mutually meshed, the differential gears are symmetrically arranged on the differential gear shafts, and the two half axle gears are mutually meshed with the two differential gears.
Preferably, the large helical gear is fixed outside the differential case by a gear bolt, and the differential gear shaft is fixed inside the differential case by an elastic cylindrical pin.
Preferably, the bevel pinion is mounted on a double-acting output shaft of the driving motor, and the bevel pinion is fixed on the shaft lever of the speed reducer through a round nut, a flat washer and a stop washer for the round nut.
Preferably, the side gears are provided in two and are respectively mounted on the ends of the two side hub assemblies.
Preferably, an axial adjusting gasket is arranged between the connecting hub and the gear box body, and an axial gap between the large helical gear and the small helical gear in meshing is controlled by the axial adjusting gasket; annular radial clearance spacer bushes are arranged on the outer sides of the differential shell, and the radial clearance of the meshing between the large helical gear and the small helical gear is controlled by the annular radial clearance spacer bushes.
Preferably, differential adjusting shims are arranged on the rear side of the side gear and on the outer side of the differential gear, and the meshing gap between the side gear and the two differential gears is controlled by the differential adjusting shims.
Preferably, the reduction box body and the driving motor, the reduction box body and the gear box body, and the reduction box body and the rear end cover of the reduction box are sealed through sealing pieces.
Preferably, a silencer is arranged in the reduction box body.
The invention has the beneficial effects that:
the device realizes the multi-stage speed reduction of the driving system of the electric vehicle by arranging the speed reducer component and the differential mechanism component in the reduction box and utilizing the multi-stage speed reducing device which is meshed between the large helical gear and the small helical gear and between the large helical gear and the small helical gear; the differential control between the single motor and the double hubs is realized by utilizing the mutual meshing between the two half shaft gears and the two differential gears, and the system has good stabilizing effect; an axial adjusting gasket is arranged between the connecting hub and the gear box body, so that the control of the axial clearance of the meshing between the large spiral gear and the small spiral gear is realized; annular radial clearance spacer bushes are arranged on the outer walls of the two half shafts outside the differential shell, so that the radial clearance control of the meshing between the large helical gear and the small helical gear is realized; differential adjusting gaskets are arranged on the rear side of the half axle gear and the outer side of the differential gear, so that the meshing clearance between the half axle gear and the two differential gears is controlled; the speed reduction box body and the driving motor, the speed reduction box body and the gear box body, and the speed reduction box body and the rear end cover of the speed reduction box body are sealed through sealing pieces, so that the sealing effect is good, and the noise is low. The invention has the advantages of ingenious design, compact structure, low noise, reliable sealing, high cost performance and strong practicability, can effectively solve the technical problems existing in the background, is widely applied to vehicles such as fixed platform carriers and tractors taking storage batteries as power, is an ideal vehicle in systems such as storage, logistics, national defense, railways, postal service, manufacturing industry, medicine, tobacco, tourism and the like, and has huge market potential.
Drawings
FIG. 1: the invention has a schematic structure;
FIG. 2: the invention discloses a structure schematic diagram of a speed reducer assembly;
FIG. 3: the differential assembly of the invention has a schematic structure.
Detailed Description
The following description of the embodiments of the present invention is made with reference to the accompanying drawings 1 to 3:
as shown in fig. 1-3, a reduction gearbox comprises a gear box body 1, a reduction box body 2, a reduction gear assembly 3, a differential assembly 4 and a reduction gearbox rear end cover 5, wherein the reduction box body 2 and the reduction gearbox rear end cover 5 are respectively installed at the upper end and the lower end of the gear box body 1, and the reduction gear assembly 3 and the differential assembly 4 are respectively arranged in the reduction box body 2 and the gear box body 1. The speed reduction box body 2 and the driving motor, the speed reduction box body 2 and the gear box body 1, and the speed reduction box body 2 and the rear end cover 5 are sealed through sealing pieces 9.
The speed reducer component 3 adopts a secondary speed reducing structure of a helical gear pair and a hypoid bevel gear pair with 27.46-degree large helix angle and high-speed precision grinding process, wherein the speed reducer component 3 comprises a speed reducer shaft lever 31, a large helical gear 32, a small helical gear 33, a small helical gear 34, a speed reducing shell 35 and a connecting hub 36, the speed reducing shell 35 is fixed on the gear box body 1 through the connecting hub 36 and bolts, the speed reducer shaft lever 31 is arranged in the speed reducing shell 35 through a tapered roller bearing 37, the large helical gear 32 and the small helical gear 33 are respectively arranged at the upper end and the lower end of the speed reducer shaft lever 31, and the large helical gear 32 and the small helical gear 34 are mutually meshed; the bevel pinion 34 is attached to a double-acting output shaft of the drive motor, and the bevel pinion 32 is fixed to the reducer shaft 31 via a round nut 38, a flat washer 39, and a lock washer 30 for the round nut. An axial adjusting gasket 6 is arranged between the connecting hub 36 and the gear box body 1, and the axial clearance of the meshing between the large helical gear 42 and the small helical gear 33 is controlled by the axial adjusting gasket 6.
The differential assembly 4 includes a differential case 41, a large helical gear 42, a side gear 43, a differential gear 44, and a differential gear shaft 45, wherein the side gear 43, the differential gear 44, and the differential gear shaft 45 are disposed in the differential case 41, the large helical gear 42 and the small helical gear 33 are engaged with each other, the differential gear 44 is disposed on the differential gear shaft 45 in two pairs and symmetrically, and both the two side gears 43 and both the two differential gears 44 are engaged with each other. The large helical gear 42 is fixed outside the differential case 41 by a gear bolt 47, and the differential gear shaft 45 is fixed inside the differential case 41 by an elastic cylindrical pin 46. The side gears 43 are provided in two and are mounted on the ends of the two side hub assemblies 48, respectively.
The outer sides of the differential case 41 are provided with annular radial clearance spacers 7, and the radial clearance of the meshing between the large helical gear 42 and the small helical gear 33 is controlled by the annular radial clearance spacers 7. Differential adjusting shims 8 are provided on the rear side of the side gear 43 and on the outer side of the differential gear 44, and the meshing gap between the side gear 43 and the two differential gears 44 is controlled by the differential adjusting shims 8.
A silencer is arranged in the reduction box body 2, and when the reduction box body inputs the rotating speed of 2650r/min, the vibration acceleration is not more than 2m/s2(ii) a Sound levelThe noise measured when the measured surface is aligned with the zero incidence angle and the distance from the measured point is 1m is less than or equal to 70dB (A).
The device realizes the multi-stage speed reduction of the driving system of the electric vehicle by arranging the speed reducer component 3 and the differential component 4 in the reduction box 2 and utilizing the multi-stage speed reducing devices which are meshed with each other between the large helical gear 32 and the small helical gear 34 and between the large helical gear 42 and the small helical gear 33; the differential control between the single motor and the double-drive hubs is realized by utilizing the mutual engagement between the two half-shaft gears 43 and the two differential gears 44, and the system has good stabilizing effect; an axial adjusting gasket 6 is arranged between the connecting hub 36 and the gear box body 1, so that the control of the axial clearance 6 meshed between the large helical gear 42 and the small helical gear 33 is realized; an annular radial clearance spacer 7 is arranged on the outer side of the differential case 41, so that the control of the radial clearance 7 meshed between the large helical gear 42 and the small helical gear 33 is realized; differential adjusting gaskets 8 are arranged on the rear side of the side gear 43 and on the outer side of the differential gear 44, so that the meshing clearance between the side gear 43 and the two differential gears 44 is controlled; all sealed through sealing member 9 between reduction box 2 and driving motor, reduction box 2 and gear box 1, reduction box 2 and reduction box rear end cap 5, sealed effectual, the noise is low. The invention has the advantages of ingenious design, compact structure, low noise, reliable sealing and stronger practicability, can effectively solve the technical problems existing in the background, is widely applied to vehicles such as fixed platform carriers and tractors taking storage batteries as power, is an ideal vehicle in systems such as storage, logistics, national defense, railways, postal service, manufacturing industry, medicine, tobacco, tourism and the like, and has huge market potential.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (8)
1. A reduction gearbox is characterized by comprising a gearbox body (1), a reduction gearbox body (2), a reduction gear assembly (3), a differential assembly (4) and a reduction gearbox rear end cover (5), wherein the reduction gearbox body (2) and the reduction gearbox rear end cover (5) are respectively installed at the upper end and the lower end of the gearbox body (1), and the reduction gear assembly (3) and the differential assembly (4) are respectively arranged in the reduction gearbox body (2) and the gearbox body (1); the speed reducer assembly (3) comprises a speed reducer shaft rod (31), a large helical gear (32), a small helical gear (33), a small helical gear (34), a speed reducing shell (35) and a connecting hub (36), the speed reducing shell (35) is fixed on the gearbox body (1) through the connecting hub (36) and bolts, the speed reducer shaft rod (31) is arranged in the speed reducing shell (35) through a tapered roller bearing (37), the large helical gear (32) and the small helical gear (33) are respectively arranged at the upper end and the lower end of the speed reducer shaft rod (31), and the large helical gear (32) and the small helical gear (34) are meshed with each other; differential mechanism subassembly (4) are including differential mechanism casing (41), big helical gear (42), side gear (43), differential gear (44), differential gear axle (45) set up in differential mechanism casing (41), intermeshing between big helical gear (42) and little helical gear (33), differential gear (44) are provided with two and the symmetry sets up on differential gear axle (45), intermeshing between two half-shaft gear (43) all and two differential gear (44).
2. A reduction gearbox according to claim 1, characterised in that the large helical gear (42) is secured outside the differential housing (41) by means of gear bolts (47), and that the differential gear shaft (45) is secured in the differential housing (41) by means of resilient cylindrical pins (46).
3. A reduction gearbox according to claim 1, characterised in that said bevel pinion (34) is mounted on the double-acting output shaft of the drive motor, said bevel pinion (32) being fixed to the reducer shaft (31) by means of a round nut (38), a flat washer (39), a stop washer (30) for the round nut.
4. A reduction gearbox according to claim 1, characterised in that the side gears (43) are provided in two and are mounted respectively at the ends of two half-axle hub assemblies (48).
5. A reduction gearbox according to claim 1, characterised in that an axial adjusting shim (6) is arranged between the connecting hub (36) and the gearbox housing (1), and the axial clearance of the meshing between the large helical gear (42) and the small helical gear (33) is controlled by the axial adjusting shim (6); annular radial clearance spacers (7) are arranged on the outer sides of the differential shell (41), and radial clearances meshed between the large helical gear (42) and the small helical gear (33) are controlled by the annular radial clearance spacers (7).
6. A reduction gearbox according to claim 1, characterised in that differential adjustment shims (8) are arranged on the rear side of the side gear (43) and on the outer side of the differential gear (44), and the meshing clearance between the side gear (43) and the two differential gears (44) is controlled by the differential adjustment shims (8).
7. The reduction gearbox according to claim 1, wherein the reduction gearbox body (2) and the driving motor, the reduction gearbox body (2) and the gear box body (1), and the reduction gearbox body (2) and the reduction gearbox rear end cover (5) are sealed through sealing elements (9).
8. A reduction gearbox according to claim 1, characterised in that a silencer is arranged in the reduction gearbox body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910970924.7A CN110594383A (en) | 2019-10-14 | 2019-10-14 | Reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910970924.7A CN110594383A (en) | 2019-10-14 | 2019-10-14 | Reduction gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594383A true CN110594383A (en) | 2019-12-20 |
Family
ID=68866861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910970924.7A Pending CN110594383A (en) | 2019-10-14 | 2019-10-14 | Reduction gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594383A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865734A (en) * | 2006-06-23 | 2006-11-22 | 崔国跃 | Method and device for processing oil leakage of decelerator or gear box |
| CN101418670A (en) * | 2008-11-25 | 2009-04-29 | 崔奉寿 | High wind pressure pneumatic double-gear turning machine |
| CN201951241U (en) * | 2011-01-04 | 2011-08-31 | 赣州五环机器有限责任公司 | Drive axle of anti-explosion towing vehicle |
| CN208730777U (en) * | 2018-05-30 | 2019-04-12 | 安徽合力股份有限公司安庆车桥厂 | A kind of drive axle of small wheelspan motor braking |
| CN211117425U (en) * | 2019-10-14 | 2020-07-28 | 合肥海源机械有限公司 | Reduction gearbox |
-
2019
- 2019-10-14 CN CN201910970924.7A patent/CN110594383A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865734A (en) * | 2006-06-23 | 2006-11-22 | 崔国跃 | Method and device for processing oil leakage of decelerator or gear box |
| CN101418670A (en) * | 2008-11-25 | 2009-04-29 | 崔奉寿 | High wind pressure pneumatic double-gear turning machine |
| CN201951241U (en) * | 2011-01-04 | 2011-08-31 | 赣州五环机器有限责任公司 | Drive axle of anti-explosion towing vehicle |
| CN208730777U (en) * | 2018-05-30 | 2019-04-12 | 安徽合力股份有限公司安庆车桥厂 | A kind of drive axle of small wheelspan motor braking |
| CN211117425U (en) * | 2019-10-14 | 2020-07-28 | 合肥海源机械有限公司 | Reduction gearbox |
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