CN212921020U - Steering driving front axle with small error - Google Patents
Steering driving front axle with small error Download PDFInfo
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- CN212921020U CN212921020U CN202021813327.8U CN202021813327U CN212921020U CN 212921020 U CN212921020 U CN 212921020U CN 202021813327 U CN202021813327 U CN 202021813327U CN 212921020 U CN212921020 U CN 212921020U
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Abstract
The utility model discloses a little steering drive front axle of error, including transmission and wheel hub, transmission includes universal drive, be equipped with hub reduction gears between universal drive and the two-wheel hub, hub reduction gears includes ring gear, speed reduction planetary gear set and power take off end cover respectively, the ring gear is fixed at the axle housing both ends, speed reduction planetary gear set covers at corresponding power take off end through the round pin hub fixation, the power take off end cover is connected with wheel hub, universal drive includes external semi-axis and universal joint, external semi-axis one end is connected with the universal joint, external semi-axis surface integrated into one piece has annular convex body, annular convex body surface is equipped with the sun gear portion with speed reduction planetary gear set meshing linkage. The phenomenon that different axial surfaces of the outer half shaft and the sun gear part as well as the sun gear part and the reduction planetary gear set are staggered and meshed can be avoided, and the transmission torque force and the service life of the wheel-side planetary reduction mechanism are effectively prolonged; meanwhile, the production efficiency is improved due to the reduction of the assembly process.
Description
Technical Field
The utility model relates to a vehicle running gear field, concretely relates to little steering drive front axle of error.
Background
The structure of the steering drive front axle is known, for example, the chinese invention patent with the application number CN201610183174.5 and the chinese utility model patent with the application number CN201320051349.9 both disclose a steering drive front axle of an excavator, which comprises an axle housing, two braking devices, two hubs, a transmission device and a steering device, wherein the axle housing is axially extended and has a hollow structure, the transmission device comprises a main speed reducer and a universal transmission part, the main speed reducer is arranged in the middle of the inner side of the axle housing and is used for converting the radial torque input of an engine into axial torque output, the two braking devices are respectively arranged on the hubs at the two ends of the axle housing and are used for controlling the rotation of the hubs, the two hubs are respectively rotatably arranged at the two ends of the axle housing, the universal transmission is arranged in the steering knuckle and respectively outputs and transmits the axial torque of the main speed reducer to the two hubs which can rotate relative to the braking devices, the steering device is arranged between the axle housing, the universal transmission and two wheel hubs are respectively provided with a wheel reduction mechanism at the wheel edge, each wheel reduction mechanism comprises a gear ring, a sun wheel, a reduction planetary gear set and a power output end cover, each gear ring is respectively fixed at two ends of the axle housing, each sun wheel is respectively connected with each axial torque output end of the universal transmission, each reduction planetary gear set can do circumferential rotation along the corresponding gear ring through the meshed linkage with the corresponding sun wheel, each reduction planetary gear set is respectively fixed on the corresponding power output end through a pin shaft, and each power output end is respectively fixed on one side of each wheel hub. The wheel-side planetary speed reducing mechanism of the driving front axle transmits the torque transmitted by the main speed reducer to wheels arranged on the wheel hub after speed reduction and torque increase, so that the wheels generate larger driving force under the reaction of ground adhesion.
The universal transmission comprises two inner half shafts, two outer half shafts and two universal joints, one end of each inner half shaft is connected with the axial torque output end of the main speed reducer, the other end of each inner half shaft is connected with each universal joint, one end of each outer half shaft is connected with each universal joint, and the other end of each outer half shaft is connected with a corresponding sun wheel. When the driving front axle is in actual use, the requirement on the meshing fit precision of the coaxial surfaces between each planetary gear set and the sun gear and the coaxial surfaces between the sun gear and the outer half axle is very high, errors are easy to occur in the assembling process and the wheel driving process, and the phenomenon of malposition meshing of different axial surfaces is easy to occur when the errors occur, so that the transmission torsion and the service life of the wheel-side planetary speed reducing mechanism are reduced.
In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.
Disclosure of Invention
The utility model discloses a main aim at provides a little steering drive front axle of error can reduce the error accumulation to extension wheel limit planetary reduction mechanism's life.
In order to achieve the above purpose, the solution of the present invention is:
the utility model provides a little steering drive front axle of error, including transmission and wheel hub, transmission includes universal drive, is equipped with hub reduction gears between universal drive and the two wheel hubs, and hub reduction gears includes ring gear, speed reduction planetary gear set and power take off end cover respectively, and the ring gear is fixed at the axle housing both ends, and speed reduction planetary gear set passes through the round pin axle to be fixed and covers at corresponding power take off end, and the power take off end cover is connected with wheel hub, and universal drive includes external half axle and universal joint, and external half axle one end is connected with the universal joint, wherein, external half axle surface integrated into one piece has annular convex body, annular convex body surface is equipped with the sun gear portion with speed reduction planetary gear set engaged linkage.
Furthermore, the brake drum is further arranged, the hub and the brake drum are integrally formed, and the power output end cover is provided with an outward-turning connecting part which is fixedly connected with the brake drum through a locking bolt.
Further, the wheel hub is provided with a reinforcing portion, the reinforcing portion is provided with a mounting groove, and the mounting groove is provided with a bolt hole for the locking bolt to pass through.
Furthermore, a plurality of weight reduction grooves are formed in the outer surface of the brake drum.
After the structure is adopted, the utility model relates to a little error steering drive front axle, compared with the prior art, the present case directly has annular convex body at the external surface integrated into one piece of external half axle in process of production, and the annular convex body surface shaping meshes the sun gear portion of linkage with reduction planetary gear set mutually, just can realize the connection of external half axle and sun gear portion from this in process of production, need not to carry out later stage assembly after the two is shaped separately, both reduced the error that brings because of the equipment, also prevent the error that accumulates gradually in the use, thereby avoid the phenomenon of different axial planes dislocation meshing of external half axle and sun gear portion and reduction planetary gear set, effectively prolong the transmission torsion and the life of wheel limit planetary reduction mechanism; meanwhile, the production efficiency is improved due to the reduction of the assembly process.
Drawings
FIG. 1 is a schematic view of the overall structure of the present disclosure;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of an external half shaft of the present invention;
FIG. 4 is one of the structural schematic diagrams of the brake drum and the hub in the present case;
fig. 5 is a second schematic structural view of the brake drum and the hub of the present invention.
In the figure:
the wheel comprises a hub-1, a reinforcing part-11, a mounting groove-11 a and a bolt hole-11 b;
a knuckle-2; an axle housing-3; a main reducer-4;
a brake drum-5, a weight-reducing groove-51;
a locking bolt-6;
the wheel edge speed reducing mechanism-7, the gear ring-71, the planet gear-72, the power output end cover-73 and the outward turning connecting part-731;
universal transmission-8, an inner half shaft-81, an outer half shaft-82, an annular convex body-821 and a sun wheel part-821 a.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 to 5, the present disclosure provides a steering drive front axle with small error, which includes two transmission devices, two hubs 1, and two steering knuckles 2. Still include axle housing 3, two arresting gear, axle housing 3 roughly is axial extension and is hollow structure, and transmission includes main reducer 4 and establishes universal drive 86 in knuckle 2, and main reducer 4 locates 3 inboard middle parts of axle housing and is used for converting the radial torque input of engine into axial torque output, and axle housing 3 both ends are located respectively to two arresting gear, and the universal joint transmits main reducer 4's axial torque output to two relative arresting gear pivoted wheel hub 1 on.
A hub reduction mechanism 7 is arranged between the universal transmission 86 and the two hubs 1, the hub reduction mechanism 7 comprises a gear ring 71, a reduction planetary gear set and a power output end cover 73, and the reduction planetary gear set in the embodiment is composed of three planetary gears 72. The gear rings 71 are fixed at two ends of the axle housing 3 and can be fixed through a fixing frame. The speed reduction planetary gear set is fixed on a corresponding power output end cover 73 through a pin shaft, the power output end cover 73 is connected with the wheel hub 1, the universal transmission 86 comprises two inner half shafts 81, two outer half shafts 82 and two universal joints, one end of each inner half shaft 81 is connected with the axial torque output end of the main speed reducer 4, the other end of each inner half shaft 81 is connected with each universal joint, one end of each outer half shaft 82 is connected with the universal joints, an annular convex body 821 is integrally formed on the outer surface of each outer half shaft 82, and a sun wheel part 821a meshed and linked with the speed reduction planetary gear set is arranged on the surface of the annular convex body 821.
When the scheme works, the radial torque input of the engine is converted into the axial torque output by the main speed reducer 4 through the inner half shafts 81, the torque of each inner half shaft 81 is transmitted to each outer half shaft 82 correspondingly connected with the universal joint through the universal joint, the rotation of each outer half shaft 82 drives the sun gear part 821a to rotate respectively, the rotation of each sun gear part 821a drives the reduction planetary gear set in meshing transmission with the sun gear part to rotate circumferentially along the gear ring 71, so that the power output end covers 73 connected with the planetary reduction gear sets are driven to rotate, and then the wheel hubs 1 fixedly connected with the power output end covers 73 are driven to rotate.
The main innovation point of the scheme is that the annular convex body 821 is directly and integrally formed on the outer surface of the outer half shaft 82 in the production process, and the sun wheel part 821a is formed on the surface of the annular convex body 821, so that the connection between the outer half shaft 82 and the sun wheel part 821a can be realized in the production process, and later-stage assembly is not required after the outer half shaft 82 and the sun wheel part 821a are respectively formed, thereby reducing errors caused by assembly, and preventing errors gradually accumulated in the use process, avoiding the phenomenon that different axial surfaces of the outer half shaft 82 and the sun wheel part 821a, and the sun wheel part 821a and the reduction planetary gear set are dislocated and meshed, and effectively prolonging the transmission torque force and the service life of the wheel-side planetary reduction mechanism; meanwhile, the production efficiency is improved due to the reduction of the assembly process.
Preferably, the brake drum 5 is further arranged, the hub 1 and the brake drum 5 are integrally formed, the power output end cover 73 is provided with an outward-turning connecting part 731, and the outward-turning connecting part 731 is fixedly connected with the brake drum 5 through a locking bolt 6. From this, wheel hub 1 and brake drum 5 also directly are integrated into one piece in process of production, can guarantee that wheel hub 1 and brake drum 5 keep unanimous axiality in the use, also need not the later stage in addition and carry out the later stage equipment, further promote production efficiency.
Preferably, the hub 1 is provided with a reinforcing portion 11, the reinforcing portion 11 is provided with a mounting groove 11a, and the mounting groove 11a is provided with a bolt hole 11b for the locking bolt 6 to pass through. Therefore, the reinforcing part 11 is only added at the main stress point of the hub 1, so that the pressure resistance of the position is improved, and the firmness and the lightness are both considered.
Preferably, the outer surface of the brake drum 5 is provided with a plurality of lightening grooves 51, and the lightening grooves 51 are uniformly distributed, so that the whole weight of the brake hub 1 is reduced, the weight of a driving front axle is reduced, the thickness of the brake drum 5 is reduced, and heat dissipation is facilitated.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (4)
1. The utility model provides a little steering drive front axle of error, includes transmission and wheel hub, and transmission includes universal drive, is equipped with hub reduction gears between universal drive and the two wheel hubs, and hub reduction gears includes ring gear, speed reduction planetary gear set and power take off end cover respectively, and the ring gear is fixed at the axle housing both ends, and speed reduction planetary gear set passes through the round pin axle to be fixed and covers at corresponding power take off end, and the power take off end cover is connected with wheel hub, and universal drive includes external semi-axis and universal joint, and external semi-axis one end is connected with the universal joint, a serial communication port, external semi-axis surface integrated into one piece has annular convex body, annular convex body surface is equipped with the sun gear portion with speed reduction planetary gear set engaged linkage.
2. A steering driving front axle with less error as claimed in claim 1, wherein a brake drum is further provided, said hub and said brake drum are integrally formed, and said power take-off cover is provided with an out-turned connecting portion fixedly connected to the brake drum by a locking bolt.
3. A steering driving front axle with less error according to claim 2, wherein said hub is provided with a reinforcing portion provided with a mounting groove, said mounting groove being provided with a bolt hole through which a lock bolt passes.
4. A low-tolerance steer-drive front axle according to claim 3, wherein said brake drum outer surface is provided with a plurality of weight-reduction grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021813327.8U CN212921020U (en) | 2020-08-26 | 2020-08-26 | Steering driving front axle with small error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021813327.8U CN212921020U (en) | 2020-08-26 | 2020-08-26 | Steering driving front axle with small error |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212921020U true CN212921020U (en) | 2021-04-09 |
Family
ID=75301178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021813327.8U Active CN212921020U (en) | 2020-08-26 | 2020-08-26 | Steering driving front axle with small error |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212921020U (en) |
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2020
- 2020-08-26 CN CN202021813327.8U patent/CN212921020U/en active Active
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