CN114734812A - Planet wheel type retarder integrated on drive axle - Google Patents

Planet wheel type retarder integrated on drive axle Download PDF

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Publication number
CN114734812A
CN114734812A CN202210240049.9A CN202210240049A CN114734812A CN 114734812 A CN114734812 A CN 114734812A CN 202210240049 A CN202210240049 A CN 202210240049A CN 114734812 A CN114734812 A CN 114734812A
Authority
CN
China
Prior art keywords
gear
retarder
drive axle
shaft
axle
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
Application number
CN202210240049.9A
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Chinese (zh)
Inventor
刘日辉
于雷
尹垚
王彤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fawer Automotive Parts Co Ltd
Original Assignee
Fawer Automotive Parts Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fawer Automotive Parts Co Ltd filed Critical Fawer Automotive Parts Co Ltd
Priority to CN202210240049.9A priority Critical patent/CN114734812A/en
Publication of CN114734812A publication Critical patent/CN114734812A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

A planet wheel type retarder integrated on a drive axle belongs to the technical field of hydraulic retarders and comprises a retarder part and a drive axle part; the retarder part comprises a retarder mounting shell and a rear shell outside, and comprises a sun gear, a gear ring, a retarder input gear shaft, a thrust bearing, a driving and decelerating drive gear shaft, a retarder input drive gear, a planet gear and a driven bevel gear inside; the outside of the drive axle part comprises a drive axle right shell, and the inside of the drive axle part comprises a half axle gear, a differential shell, a half axle bearing, a half axle sleeve, a thrust bearing I, an oil seal, a hub bearing, a hub oil seal, an adjusting nut and a differential planetary gear. The retarder is integrated with the drive axle, a planetary wheel type mechanical structure is adopted, the medium is high-viscosity hydraulic oil or magnetorheological fluid, the size is small, and the integration with the drive axle is facilitated.

Description

Planet wheel type retarder integrated on drive axle
Technical Field
The invention belongs to the technical field of hydraulic retarders, and particularly relates to a planetary gear retarder integrated with a drive axle.
Background
Urban road intersections are many, bus stops are dense, passenger flow is large, and buses are frequently braked; the mountain roads are steep and have many sharp bends, and medium and large trucks and buses running on the mountain road section for a long time also need to be braked frequently. Under the condition of long-time frequent work of the brake, the brake shoes are quickly worn, the service life of the brake friction plates is short, and the loss of braking force or great reduction of braking performance is caused by the heat fading of the brake, which also becomes the main cause of traffic accidents. Therefore, it is necessary to equip an auxiliary braking system.
The retarder is used as an auxiliary braking component of the vehicle, reduces the load of the braking system of the original vehicle by acting on the transmission system of the original vehicle, enables the vehicle to decelerate uniformly, improves the reliability of the braking system of the vehicle, prolongs the service life of the braking system, and can greatly reduce the use cost of the vehicle.
At present, there are eddy current retarders and hydrodynamic retarders. The eddy current retarder is large in size, heavy in machine body, large in power consumption and greatly influenced by ambient temperature. The hydraulic retarder has the advantages of large volume, relatively low reaction speed, insufficient low-speed braking power and large no-load loss.
The conventional retarder is mainly placed at the torque output end of the gearbox and connected with the gearbox in series or in parallel, but the conventional retarder is large in size.
Therefore, there is a need in the art for a new solution to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the retarder is integrated with the drive axle, a planetary wheel type mechanical structure is adopted, a medium is high-viscosity hydraulic oil or magnetorheological fluid, the size is small, and the integration with the drive axle is facilitated.
A planet wheel type retarder integrated on a drive axle is characterized in that: comprises a retarder part and a drive axle part;
the retarder part comprises a retarder mounting shell and a rear shell outside, and comprises a sun gear, a gear ring, a retarder input gear shaft, a thrust bearing, a driving and decelerating drive gear shaft, a retarder input drive gear, a planet gear and a driven bevel gear inside;
the outer part of the drive axle part comprises a drive axle right shell, and the inner part comprises a half axle gear, a differential shell, a half axle bearing, a half axle sleeve, a thrust bearing I, an oil seal, a hub bearing, a hub oil seal, an adjusting nut and a differential planetary gear;
the main speed reduction driving gear shaft is connected with a retarder input driving gear, and a thrust bearing is arranged outside the main speed reduction driving gear shaft; the retarder input driving gear is connected with a retarder input gear shaft; the sun wheel and the retarder input gear shaft are connected with three planet wheels arranged outside the sun wheel; the gear ring is arranged outside the planet wheel;
the driven bevel gear is arranged at the end part of the main speed reduction driving gear shaft and matched with the half axle gear; the half shaft gear is arranged on the half shaft, and a differential planetary gear is arranged outside the half shaft gear; a differential shell is arranged outside the differential planetary gear;
the half shaft bearing is connected with the half shaft; a thrust bearing I is arranged outside the half shaft through an adjusting nut, and an oil seal is arranged at a position adjacent to the thrust bearing I;
a half shaft sleeve outside the end part of the half shaft; a hub bearing is arranged outside the semi-shaft sleeve; and a hub oil seal is arranged at the end part of the hub bearing.
And an end cover is arranged on the outer side of the end part of the half shaft.
And a retarder bearing is arranged outside the retarder input gear shaft.
And the half shaft is also provided with a clutch, and the clutch is connected with the differential lock sensor.
And an adjusting gasket is arranged outside the main speed reduction driving gear shaft.
And a drive axle oil discharge port is formed in the lower part of the drive axle right shell.
And the middle part of the half shaft is also provided with a main speed reducer input gear shaft.
Brake hubs are further arranged on two sides of the end portion of the half shaft, and hub covers are arranged outside the brake hubs.
Through the design scheme, the invention can bring the following beneficial effects: a planet wheel type retarder integrated with a drive axle integrates the retarder with the drive axle, adopts a planet wheel type mechanical structure, adopts high-viscosity hydraulic oil or magnetorheological fluid as a medium, has small volume and is convenient to integrate with the drive axle.
Drawings
The invention is further described in the following detailed description in conjunction with the drawings in which:
fig. 1 is a schematic structural diagram of a planetary wheel type retarder integrated on a drive axle.
In the figure, 1-retarder bearing, 2-sun gear, 3-gear ring, 4-rear shell, 5-main reducer input gear shaft, 6-retarder installation shell, 7-retarder input gear shaft, 8-thrust bearing, 9-main reducer driving gear shaft, 10-retarder input driving gear, 11-adjusting gasket, 12-driven bevel gear, 13-half shaft gear, 14-differential shell, 15-half shaft bearing, 16-brake hub, 17-hub cover, 18-half shaft, 19-half shaft sleeve, 20-thrust bearing I, 21-oil seal, 22-end cover, 24-hub bearing, 25-hub oil seal, 26-adjusting nut, 27-drive axle right shell, 28-differential lock sensor, 29-clutch, 30-differential planetary gear, 31-drive axle oil outlet, 33-planetary gear.
Detailed Description
A planetary gear type retarder integrated on a drive axle is shown in figure 1 and comprises a retarder bearing 1, a sun gear 2, a gear ring 3, a rear shell 4, a main reducer input gear shaft 5, a retarder mounting shell 6, a retarder input gear shaft 7, a thrust bearing 8, a main reducer drive gear shaft 9, a retarder input drive gear 10, an adjusting gasket 11, a driven bevel gear 12, a half shaft gear 13, a differential shell 14, a half shaft bearing 15, a brake hub 16, a hub cover 17, a half shaft 18, a half shaft sleeve 19, a thrust bearing I20, an oil seal 21, an end cover 22, a hub bearing 24, a hub oil seal 25, an adjusting nut 26, a drive axle right shell 27, a differential lock sensor 28, a clutch 29, a differential planetary gear 30, a drive axle oil outlet 31 and a planetary gear 33.
The main speed reduction driving gear shaft 9 is connected with a retarder input driving gear 10, and a thrust bearing 8 is arranged outside the main speed reduction driving gear shaft 9; the retarder input driving gear 10 is connected with the retarder input gear shaft 7; the sun gear 2 and the retarder input gear shaft 7 are connected with three planet gears 33 arranged outside the sun gear 2; the ring gear 3 is arranged outside the planet gears 33;
the driven bevel gear 12 is arranged at the end part of the driving gear shaft 9 for driving speed reduction, and the driven bevel gear 12 is matched with the half shaft gear 13; the side gear 13 is arranged on the half shaft 18, and a differential planetary gear 30 is arranged outside the side gear 13; a differential case 14 is arranged outside the differential planetary gear 30;
the half shaft bearing 15 is connected with a half shaft 18; a thrust bearing I20 is arranged outside the half shaft 18 through an adjusting nut 26, and an oil seal 21 is arranged at a position adjacent to the thrust bearing I20;
an end portion of the half shaft 18 is provided with an outer half shaft sleeve 19; a hub bearing 24 is arranged outside the half-shaft sleeve 19; the end of the hub bearing 24 is provided with a hub oil seal 25.
An end cap 22 is provided on the outside of the end of the half shaft 18.
And a retarder bearing 1 is arranged outside the retarder input gear shaft 7.
A clutch 29 is also provided on the axle shaft 18, the clutch 29 being connected to the differential lock sensor 28.
An adjusting gasket 11 is arranged outside the main speed reduction driving gear shaft 9.
And a drive axle oil outlet 31 is arranged at the lower part of the drive axle right shell 27.
The middle part of the half shaft 18 is also provided with a main reducer input gear shaft 5.
Brake hubs 16 are further provided on both sides of the end portions of the half shafts, and hub covers 17 are provided outside the brake hubs 16.
When the invention works, the sun wheel 2 and the planet wheel 33 are driven to rotate in a fluid medium through the input shaft, and along with the meshing motion between the gears, the pressure change in the working cavity enables the fluid medium to flow in a loop and generate larger resistance, thereby generating braking torque. When the vehicle is in idle load, the system is unloaded, fluid media are pumped, the mechanical structure and the vehicle transmission shaft idle, and the resistance loss is small and can be ignored.
The invention combines the differential mechanism front end shell and the retarder shell, has compact structure, can share a bearing, a shell, a differential mechanism input shaft and a transmission shaft input flange with the differential mechanism input transmission shaft, adopts high-strength wear-resistant aluminum alloy, and can reduce the weight by more than 20KG compared with the conventional retarder.
Another embodiment of the present invention is: the speed-increasing torque-reducing gear pair can be arranged at one end, namely the rear end, of the axle housing, the control oil pump is arranged at the front end, the differential case is used as an oil storage cavity, and an oil inlet of a working cavity of the planet wheel compound pump absorbs oil from the axle housing; the flow control proportional valve is arranged at the output port of the working cavity, and when the magnetorheological fluid medium is adopted, the electromagnetic coil of the porous plate can be used for controlling the damping of the output port, so that the pressure of the working cavity of the compound pump can be controlled, and the braking force can be controlled. The housing is thus smaller and lighter in weight.
The above description is only an example of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. A planet wheel type retarder integrated on a drive axle is characterized in that: comprises a retarder part and a drive axle part;
the retarder comprises a retarder mounting shell (6) and a rear shell (4) outside the retarder part, and comprises a sun gear (2), a gear ring (3), a retarder input gear shaft (7), a thrust bearing (8), a main speed reduction driving gear shaft (9), a retarder input driving gear (10), a planet gear (33) and a driven bevel gear (12) inside the retarder part;
the outer part of the drive axle part comprises a drive axle right shell (27), and the inner part comprises a half axle gear (13), a differential shell (14), a half axle bearing (15), a half axle (18), a half axle sleeve (19), a thrust bearing I (20), an oil seal (21), a hub bearing (24), a hub oil seal (25), an adjusting nut (26) and a differential planetary gear (30);
the main speed reduction driving gear shaft (9) is connected with a retarder input driving gear (10), and a thrust bearing (8) is arranged outside the main speed reduction driving gear shaft (9); the retarder input driving gear (10) is connected with a retarder input gear shaft (7); the sun gear (2) and the retarder input gear shaft (7) are connected with the outer part of the sun gear (2) and three planet gears (33) are arranged; the gear ring (3) is arranged outside the planetary gear (33);
the driven bevel gear (12) is arranged at the end part of the driving gear shaft (9) for driving speed reduction, and the driven bevel gear (12) is matched with the half shaft gear (13); the side gear (13) is arranged on the half shaft (18), and a differential planet gear (30) is arranged outside the side gear (13); a differential case (14) is arranged outside the differential planetary gear (30);
the half shaft bearing (15) is connected with a half shaft (18); a thrust bearing I (20) is arranged outside the half shaft (18) through an adjusting nut (26), and an oil seal (21) is arranged at a position adjacent to the thrust bearing I (20);
an end outer half shaft sleeve (19) of the half shaft (18); a hub bearing (24) is arranged outside the semi-shaft sleeve (19); and a hub oil seal (25) is arranged at the end part of the hub bearing (24).
2. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: and an end cover (22) is arranged on the outer side of the end part of the half shaft (18).
3. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: and a retarder bearing (1) is arranged outside the retarder input gear shaft (7).
4. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: and a clutch (29) is further arranged on the half shaft (18), and the clutch (29) is connected with a differential lock sensor (28).
5. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: an adjusting gasket (11) is arranged outside the driving gear shaft (9).
6. The planetary gear type retarder integrated on the transaxle according to claim 1, wherein: and a drive axle oil outlet (31) is formed in the lower part of the drive axle right shell (27).
7. The planetary gear type retarder integrated on the transaxle according to claim 1, wherein: and the middle part of the half shaft (18) is also provided with a main reducer input gear shaft (5).
8. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: and brake hubs (16) are further arranged on two sides of the end part of the half shaft (18), and a hub cover (17) is arranged outside each brake hub (16).
9. A planetary gear type retarder integrated on a drive axle according to claim 1, wherein: the connection part of the retarder and the driving axle can also adopt a speed-increasing torque-reducing gear pair and is arranged at one end of the axle housing, the control oil pump is arranged at the front end, the differential case is used as an oil storage cavity, and an oil inlet of a working cavity of the planet wheel compound pump absorbs oil from the axle housing; the output port of the working cavity is provided with a flow control proportional valve, and when the magnetorheological fluid medium is adopted, the output port damping can be controlled by adopting a porous plate electromagnetic coil, so that the pressure of the working cavity of the compound pump is controlled, and the braking force is controlled.
CN202210240049.9A 2022-03-12 2022-03-12 Planet wheel type retarder integrated on drive axle Pending CN114734812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210240049.9A CN114734812A (en) 2022-03-12 2022-03-12 Planet wheel type retarder integrated on drive axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210240049.9A CN114734812A (en) 2022-03-12 2022-03-12 Planet wheel type retarder integrated on drive axle

Publications (1)

Publication Number Publication Date
CN114734812A true CN114734812A (en) 2022-07-12

Family

ID=82275156

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210240049.9A Pending CN114734812A (en) 2022-03-12 2022-03-12 Planet wheel type retarder integrated on drive axle

Country Status (1)

Country Link
CN (1) CN114734812A (en)

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