CN211592243U - Heavy-duty large-speed-ratio electric tractor drive axle - Google Patents
Heavy-duty large-speed-ratio electric tractor drive axle Download PDFInfo
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- CN211592243U CN211592243U CN201922348338.7U CN201922348338U CN211592243U CN 211592243 U CN211592243 U CN 211592243U CN 201922348338 U CN201922348338 U CN 201922348338U CN 211592243 U CN211592243 U CN 211592243U
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Abstract
The utility model discloses a heavy big velocity ratio electric traction car transaxle, including shell, main reducer, axle sleeve, semi-axis, mount pad, stopper, brake disc and wheel hub, the shell internally mounted has main reducer, the axle sleeve is all installed at the shell both ends, the semi-axis is installed at the main reducer both ends and in the axle sleeve internally, semi-axis one end is installed brake disc and wheel hub, the mount pad is installed in the axle sleeve outside, install the stopper on the mount pad, and stopper and brake disc cooperation use, the semi-axis outside is rotated and is installed the bearing, the axle sleeve outside is equidistant to be provided with spacing sleeve seat all around; the utility model discloses a vibrations of semi-axis are through the elastic deformation buffering absorption of first spring, and when first spliced pole removed along with vibrations, to the second spring work and drive the slip of second spliced pole, and vibrations when mutually supporting messenger's reduction semi-axis uses have improved the life of semi-axis greatly.
Description
Technical Field
The utility model relates to an automotive vehicle field specifically is a heavy big velocity ratio electric traction car transaxle.
Background
The drive axle generally comprises a main speed reducer, a differential mechanism, a wheel transmission device, a drive axle housing and the like; the universal transmission device has the functions of turning the power transmitted by the universal transmission device through an angle of 90 degrees, changing the transmission direction of the power, reducing the rotating speed by the main speed reducer, increasing the torque, and distributing the torque to the left half shaft, the right half shaft and the driving wheel through the differential.
The transmission ratio of the single-stage main speed reduction driver is generally 3.5-6.7, and the overlarge transmission ratio can cause the oversize of the driven bevel gear to influence the ground clearance of the drive axle housing, the smaller the ground clearance is, the poorer the trafficability of the automobile is, so that on one hand, the main speed reducer with large speed ratio cannot be installed on some small vehicles or vehicles with compact structures, on the other hand, the size of the main speed reducer is limited, and at present, domestic tractors applied to more than 20 generally adopt drive axles with large size, so that the volume of the tractor is correspondingly increased, and the tractor cannot be applied to special fields with narrow fields and complex field topography; and meanwhile, when the semi-axle is used, the semi-axle is in a vibrating working environment for a long time, so that the service life of the semi-axle is greatly reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heavy big velocity ratio electric tractor transaxle, generally 3.5-6.7 for the drive ratio of overcoming above-mentioned single-stage main reduction driver, drive ratio too big will make driven bevel gear's oversize, influence the ground clearance of transaxle shell, the ground clearance is smaller, the car trafficability characteristic is worse, this one side has restricted the main reducer of big velocity ratio and can't install on some small-size vehicles or the vehicle of compact structure, on the other hand is subject to the restriction of reducer volume, the domestic tractor that is applied to more than 20 at present generally adopts bulky transaxle, consequently cause the corresponding increase of tractor volume, thereby can't be applied to the place narrowly, the complicated special field of site topography; and meanwhile, when the semi-axle is used, the semi-axle is in a vibrating working environment for a long time, so that the technical problem of greatly reducing the service life of the semi-axle is solved.
The purpose of the utility model can be realized by the following technical scheme:
a drive axle of a heavy-duty large-speed-ratio electric tractor comprises a shell, a main speed reducer, shaft sleeves, half shafts, mounting seats, brakes, brake discs and wheel hubs, wherein the main speed reducer is mounted inside the shell, the shaft sleeves are mounted at two ends of the shell, the half shafts are mounted at two ends of the main speed reducer and positioned inside the shaft sleeves, the brake discs and the wheel hubs are mounted at one ends of the half shafts, the mounting seats are mounted outside the shaft sleeves, the brakes are mounted on the mounting seats, and the brakes and the brake discs are matched for use;
the outer side of the half shaft is rotatably provided with a bearing, the periphery of the outer side of the shaft sleeve is provided with limiting sleeve seats at equal intervals, a plurality of first connecting columns are arranged at equal intervals on the outer side of the bearing, one ends of the first connecting columns penetrate through the limiting sleeve seats to be provided with baffles, and first springs are sleeved on the outer sides of the first connecting columns and positioned between the baffles and the limiting sleeve seats;
the limiting sleeve seat is characterized in that mounting chutes are formed in two sides of the limiting sleeve seat, second connecting columns are mounted on two sides of the first connecting columns, one ends of the second connecting columns penetrate through the mounting chutes, and second springs are sleeved on the outer sides of the second connecting columns and located between the first connecting columns and the limiting sleeve seat.
As a further aspect of the present invention: a plurality of first threaded holes are formed in the outer side of the shaft sleeve, a first connecting bolt is installed at the other end of the first connecting column, and the first connecting bolt is in threaded connection with the first threaded holes.
As a further aspect of the present invention: a plurality of second threaded holes are formed in the periphery of the outer side of the first connecting column, a second connecting bolt is installed at the other end of the second connecting column, and the second connecting bolt is in threaded connection with the second threaded holes.
As a further aspect of the present invention: the second connecting column is arranged in the mounting chute in a sliding mode, and a rubber ring is sleeved on the outer side of the second connecting column.
As a further aspect of the present invention: the outer diameter of the first spring is larger than the distance between the two limiting sleeve seats, and the outer diameter of the second spring is larger than the width of the mounting sliding groove.
As a further aspect of the present invention: and a hub reduction gear is arranged at the outer end of the hub.
The utility model has the advantages that: the utility model discloses a reasonable structural design, through increasing the hub reduction gear, just so can realize big traction force performance requirement on the basis that does not change transaxle overall size and structure, transaxle maximum traction force can reach 30 tons, whole bridge reduction ratio is 30.45, and the main reducer maximum external diameter of this bridge is not more than 370, thus can guarantee minimum ground clearance when adorning on the small-size car yet, improved the trafficability characteristic of whole car;
meanwhile, the vibration of the half shaft is buffered and absorbed through the elastic deformation of the first spring, and when the first connecting column moves along with the vibration, the first connecting column applies work to the second spring and drives the second connecting column to slide, and the first connecting column and the second connecting column are matched with each other to reduce the vibration of the half shaft during use, so that the service life of the half shaft is greatly prolonged;
after first spliced pole passed first spring and spacing cover seat, through first connecting bolt and the first screw hole threaded connection of the bearing of suit in the semi-axis outside, accomplish the spacing to first spring, pass the second spliced pole simultaneously behind installation spout and the second spring, be connected through the second connecting bolt and the second screw hole in the first spliced pole outside, accomplish the fixed of second spring, be convenient for install the shock-absorbing structure of semi-axis fast, subsequent change and the maintenance of being convenient for, make things convenient for in-service use.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation structure of the half axle of the present invention;
FIG. 3 is a cross-sectional view of the axle sleeve and the axle shaft of the present invention;
fig. 4 is an enlarged view of the area a in fig. 3 according to the present invention.
In the figure: 1. a housing; 2. a main reducer; 3. a shaft sleeve; 4. a half shaft; 5. a mounting seat; 6. a brake; 7. a brake disc; 8. a hub; 9. a limiting sleeve seat; 10. installing a chute; 11. a first connecting column; 12. a first connecting bolt; 13. a baffle plate; 14. a first spring; 15. a bearing; 16. a second spring; 17. a second connecting bolt; 18. a second connecting column.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, a drive axle of a heavy-duty large-speed-ratio electric tractor comprises a housing 1, a main speed reducer 2, a shaft sleeve 3, a half shaft 4, a mounting seat 5, a brake 6, a brake disc 7 and a hub 8, wherein the main speed reducer 2 is installed inside the housing 1, the shaft sleeves 3 are installed at two ends of the housing 1, the half shaft 4 is installed at two ends of the main speed reducer 2 and located inside the shaft sleeve 3, the brake disc 7 and the hub 8 are installed at one end of the half shaft 4, the mounting seat 5 is installed outside the shaft sleeve 3, the brake 6 is installed on the mounting seat 5, and the brake 6 and the brake disc;
a bearing 15 is rotatably mounted on the outer side of the half shaft 4, limiting sleeve seats 9 are arranged on the periphery of the outer side of the shaft sleeve 3 at equal intervals, a plurality of first connecting columns 11 are mounted on the outer side of the bearing 15 at equal intervals, a baffle 13 is mounted at one end of each first connecting column 11 through the limiting sleeve seat 9, and a first spring 14 is sleeved on the outer side of each first connecting column 11 and positioned between the baffle 13 and the limiting sleeve seat 9;
A plurality of first threaded holes are formed in the outer side of the shaft sleeve 3, a first connecting bolt 12 is installed at the other end of the first connecting column 11, and the first connecting bolt 12 is in threaded connection with the first threaded holes, so that the first connecting bolt 12 can be quickly assembled and disassembled.
A plurality of second threaded holes are formed in the periphery of the outer side of the first connecting column 11, a second connecting bolt 17 is installed at the other end of the second connecting column 18, and the second connecting bolt 17 is in threaded connection with the second threaded holes, so that the first connecting column 11 can be quickly assembled and disassembled conveniently.
Second spliced pole 18 slidable mounting in installation spout 10, second spliced pole 18 outside cover is equipped with the rubber circle, avoids directly colliding with installation spout 10 inner wall through the rubber circle when second spliced pole 18 removes.
The outer diameter of the first spring 14 is larger than the distance between the two limiting sleeve seats 9, the outer diameter of the second spring 16 is larger than the width of the installation sliding groove 10, and the first spring 14 and the second spring 16 can be limited when moving in a damping process.
The wheel hub 8 outer end is installed the hub reduction gear, can realize big traction force performance requirement on the basis that does not change transaxle overall size and structure.
The specific operation steps of the drive axle are as follows:
the method comprises the following steps: the engine torque transmitted by the universal transmission shaft is transmitted through the main speed reducer 2, the hub speed reducer and the half shaft 4 to realize the rotation of a brake disc 7 and a hub 8, so as to drive wheels, meanwhile, the shaft sleeves 3 at the two ends of the shell 1 are provided with brakes 6 through mounting seats 5, and the brakes 6 and the brake disc 7 realize braking;
step two: after a first connecting column 11 passes through a first spring 14 and a limiting sleeve seat 9, a first connecting bolt 12 is in threaded connection with a first threaded hole of a bearing 15 sleeved on the outer side of a half shaft 4 to complete limiting of the first spring 14, and meanwhile, after a second connecting column 18 passes through an installation sliding groove 10 and a second spring 16, the second connecting column is connected with a second threaded hole on the outer side of the first connecting column 11 through a second connecting bolt 17 to complete fixing of the second spring 16;
step three: when the drive axle works, the vibration of the half shaft 4 is buffered and absorbed through the elastic deformation of the first spring 14, and when the first connecting column 11 moves along with the vibration, the first connecting column works on the second spring 16 and drives the second connecting column 18 to slide, so that the first connecting column and the second connecting column are matched with each other for use.
The utility model discloses a reasonable structural design, through increasing the hub reduction gear, just so can realize big traction force performance requirement on the basis that does not change transaxle overall size and structure, transaxle maximum traction force can reach 30 tons, whole bridge reduction ratio is 30.45, and the 2 biggest external diameters of this bridge main reducer are not more than 370, thus can guarantee minimum ground clearance when adorning on the small-size car yet, improved the trafficability characteristic of whole car;
meanwhile, the vibration of the half shaft 4 is buffered and absorbed through the elastic deformation of the first spring 14, and when the first connecting column 11 moves along with the vibration, the second spring 16 is acted and the second connecting column 18 is driven to slide, so that the vibration of the half shaft 4 in use is reduced through mutual matching, and the service life of the half shaft 4 is greatly prolonged;
first spliced pole 11 passes behind first spring 14 and spacing sleeve seat 9, through first connecting bolt 12 and the first screw hole threaded connection of the bearing 15 of suit in the semi-axis 4 outside, accomplish spacing to first spring 14, pass second spliced pole 18 simultaneously behind installation spout 10 and the second spring 16, be connected through the second threaded hole in second connecting bolt 17 and the first spliced pole 11 outside, accomplish the fixed of second spring 16, be convenient for install semi-axis 4's shock-absorbing structure fast, be convenient for subsequent change and maintenance, make things convenient for in-service use.
The utility model discloses a theory of operation: after a first connecting column 11 passes through a first spring 14 and a limiting sleeve seat 9, the first connecting column is in threaded connection with a first threaded hole of a bearing 15 sleeved on the outer side of a half shaft 4 through a first connecting bolt 12 to complete the limiting of the first spring 14, meanwhile, after a second connecting column 18 passes through a mounting chute 10 and a second spring 16, the second connecting column is connected with a second threaded hole on the outer side of the first connecting column 11 through a second connecting bolt 17 to complete the fixing of the second spring 16, the engine torque transmitted by a universal transmission shaft is transmitted through a main speed reducer 2, a wheel-side speed reducer and the half shaft 4 to realize the rotation of a brake disc 7 and a wheel hub 8 so as to drive the wheel, meanwhile, a brake 6 is mounted on shaft sleeves 3 at two ends of a shell 1 through a mounting seat 5, the braking is realized through the brake 6 and the brake disc 7, when a driving axle works, the vibration of the half shaft 4 is buffered and absorbed through the elastic deformation of the first, the second spring 16 is acted and drives the second connecting column 18 to slide, and the two springs are matched with each other for use.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The drive axle of the heavy electric tractor with the large speed ratio is characterized by comprising a shell (1), a main speed reducer (2), a shaft sleeve (3), a half shaft (4), a mounting seat (5), a brake (6), a brake disc (7) and a wheel hub (8), wherein the main speed reducer (2) is mounted inside the shell (1), the shaft sleeve (3) is mounted at two ends of the shell (1), the half shaft (4) is mounted at two ends of the main speed reducer (2) and positioned inside the shaft sleeve (3), the brake disc (7) and the wheel hub (8) are mounted at one end of the half shaft (4), the mounting seat (5) is mounted outside the shaft sleeve (3), the brake (6) is mounted on the mounting seat (5), and the brake (6) and the brake disc (7) are matched for use;
a bearing (15) is rotatably mounted on the outer side of the half shaft (4), limiting sleeve seats (9) are arranged on the periphery of the outer side of the shaft sleeve (3) at equal intervals, a plurality of first connecting columns (11) are mounted on the outer side of the bearing (15) at equal intervals, one end of each first connecting column (11) penetrates through the limiting sleeve seat (9) to be mounted with a baffle (13), and a first spring (14) is sleeved between the baffle (13) and the limiting sleeve seat (9) on the outer side of each first connecting column (11);
installation spout (10) have been seted up to spacing cover seat (9) both sides, second spliced pole (18) are installed to first spliced pole (11) both sides, and second spliced pole (18) one end runs through installation spout (10), the cover is equipped with second spring (16) outside second spliced pole (18) and is located between first spliced pole (11) and spacing cover seat (9).
2. The drive axle of the heavy-duty large-speed-ratio electric tractor according to claim 1, characterized in that a plurality of first threaded holes are formed in the outer side of the shaft sleeve (3), a first connecting bolt (12) is mounted at the other end of the first connecting column (11), and the first connecting bolt (12) is in threaded connection with the first threaded holes.
3. The drive axle of the heavy-duty large-speed-ratio electric tractor according to claim 1, wherein a plurality of second threaded holes are formed in the periphery of the outer side of the first connecting column (11), a second connecting bolt (17) is mounted at the other end of the second connecting column (18), and the second connecting bolt (17) is in threaded connection with the second threaded holes.
4. The drive axle of the heavy-duty large-speed-ratio electric tractor according to claim 1, wherein the second connecting column (18) is slidably mounted in the mounting chute (10), and a rubber ring is sleeved outside the second connecting column (18).
5. The transaxle of a heavy duty large speed ratio electric tractor according to claim 1, wherein the first spring (14) has an outer diameter larger than the distance between the two stop sleeve seats (9), and the second spring (16) has an outer diameter larger than the width of the mounting chute (10).
6. A heavy duty large ratio electric tractor transaxle according to claim 1 wherein a hub reduction gear is mounted to the outer end of the hub (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348338.7U CN211592243U (en) | 2019-12-24 | 2019-12-24 | Heavy-duty large-speed-ratio electric tractor drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348338.7U CN211592243U (en) | 2019-12-24 | 2019-12-24 | Heavy-duty large-speed-ratio electric tractor drive axle |
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| Publication Number | Publication Date |
|---|---|
| CN211592243U true CN211592243U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922348338.7U Active CN211592243U (en) | 2019-12-24 | 2019-12-24 | Heavy-duty large-speed-ratio electric tractor drive axle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861490A (en) * | 2019-12-24 | 2020-03-06 | 合肥海源机械有限公司 | Heavy-duty large-speed-ratio electric tractor drive axle |
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2019
- 2019-12-24 CN CN201922348338.7U patent/CN211592243U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861490A (en) * | 2019-12-24 | 2020-03-06 | 合肥海源机械有限公司 | Heavy-duty large-speed-ratio electric tractor drive axle |
| CN110861490B (en) * | 2019-12-24 | 2024-06-18 | 合肥海源机械有限公司 | Driving axle of heavy large-speed-ratio electric tractor |
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