CN212055699U - Transmission output assembly of agricultural tractor - Google Patents
Transmission output assembly of agricultural tractor Download PDFInfo
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- CN212055699U CN212055699U CN202020640666.4U CN202020640666U CN212055699U CN 212055699 U CN212055699 U CN 212055699U CN 202020640666 U CN202020640666 U CN 202020640666U CN 212055699 U CN212055699 U CN 212055699U
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- driven gear
- gear
- driving gear
- power output
- engaging tooth
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a transmission output assembly of an agricultural tractor, which comprises a power input component and a power output component; the power input assembly comprises a power input shaft, a first driving gear, a second driving gear and a spacer bush; the power output assembly comprises a power output shaft, a first driven gear, a second driven gear, an engaging tooth holder and an engaging tooth sleeve, the first driven gear and the second driven gear are rotatably installed on the power output shaft and are respectively engaged with the first driving gear and the second driving gear, the engaging tooth holder is fixed on the power output shaft, first gear teeth are arranged on the outer wall of the engaging tooth holder, second gear teeth are arranged at the end parts of the first driven gear and the second driven gear, the engaging tooth sleeve is sleeved outside the engaging tooth holder and can axially move, and third gear teeth are arranged on the inner wall of the engaging tooth sleeve. The utility model discloses agricultural tractor transmission output assembly can adapt to different use operating modes, satisfies different use demands; the operation is simple, the operation is stable, and the reliability is good; small volume and low overall manufacturing cost.
Description
Technical Field
The utility model relates to an agricultural tractor, in particular to an agricultural tractor transmission output assembly.
Background
With the development of industry, the progress of agriculture is also obviously improved, various devices appear, the traditional cattle cultivation and manual initialization production are replaced, the production efficiency is greatly improved, a walking tractor is taken as an example, the walking tractor is a transportation tool and agricultural machinery popular in villages and towns in China, and a diesel engine is taken as power, so that the walking tractor is popular with farmers due to the characteristics of small size, flexibility and strong power. The drive type, the traction type, and the combined drive and traction type are classified according to the working performance. The driving type is mainly matched with the rotary cultivator for operation, so the machine is also called a power cultivator; the traction type is mainly matched with traction type farm tools for operation; the dual-purpose type can be matched with a rotary cultivator for operation, and can be matched with a traction farm tool for operation or matched with a trailer for transportation operation.
The gearbox is an important part on the tractor, and can change the transmission ratio and enlarge the torque and the rotating speed of a driving wheel. The traditional tractor gearbox has fewer gears and cannot meet different use working conditions; the gearbox with a large number of gears is complex in structure and high in manufacturing cost and maintenance cost.
SUMMERY OF THE UTILITY MODEL
【1】 Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide a compact structure, low in manufacturing cost and can carry out high low-speed quick switching's agricultural tractor transmission output assembly to the gearbox output shaft.
【2】 Technical scheme for solving problems
The utility model provides an agricultural tractor transmission output assembly installs in transmission box 1, include:
the power input assembly is used for power input and comprises a power input shaft 2, a first driving gear 31, a second driving gear 32 and a spacer 33, wherein the power input shaft is rotatably arranged in the transmission box, the first driving gear, the spacer and the second driving gear are fixed on the power input shaft through splines, and the spacer is positioned between the first driving gear and the second driving gear;
the power output assembly is used for power output and comprises a power output shaft 4, a first driven gear 5, a second driven gear 7, an engaging tooth holder 8 and an engaging tooth sleeve 9, wherein the power output shaft is parallel to the power input shaft and is rotatably installed in the transmission box body, the first driven gear and the second driven gear are rotatably installed on the power output shaft and are respectively engaged with the first driving gear and the second driving gear, the engaging tooth holder is fixed on the power output shaft and is positioned between the first driven gear and the second driven gear, the outer wall of the engaging tooth holder is provided with first gear teeth 81, the end parts of the first driven gear and the second driven gear extend to one side of the engaging tooth holder to form a connecting part, and the outer diameter of the connecting part is the same as that of the engaging tooth holder, the outer wall of connecting portion be equipped with the second teeth of a cogwheel 51 that the first teeth of a cogwheel are the same, meshing tooth cover is established outside the meshing tooth seat, and can axial displacement, the inner wall of meshing tooth cover be equipped with can mesh in the third wheel tooth 91 of the first teeth of a cogwheel and second teeth of a cogwheel, the outer wall of meshing tooth cover is equipped with the annular groove 92 that holds the shift fork card and go into, power output shaft's tip extends to the transmission case is external and forms the output.
Further, the first driven gear and the second driven gear are rotatably mounted on the power output shaft through a bushing, the bushing comprises a sleeve 6, a spline is arranged on the inner wall of the sleeve 6, the end portion of the sleeve is bent outwards in the radial direction to form a limiting portion 61, and the limiting portion is in contact with the end portion of the first driven gear or the end portion of the second driven gear.
Further, the outer wall of the sleeve is provided with a spiral oil groove 601, and two ends of the oil groove extend to the outside of the sleeve.
Further, the thread pitch of the oil groove is the same as the axial width of the sleeve.
Furthermore, the power output shaft is rotatably installed in the transmission case through two first bearings, and the limiting part is in contact with the end face of the inner ring of the first bearing.
Further, the transmission ratio between the first driving gear and the first driven gear is i1, the transmission ratio between the second driving gear and the second driven gear is i2, and 2 ≤ i1/i2 ≤ 4.
【3】 Advantageous effects
The utility model discloses agricultural tractor transmission output assembly does high-low speed switching to the output shaft of gearbox, has improved variable speed and moment of torsion scope, can adapt to different use operating modes, satisfies different user demands; the operation is simple, the operation is stable, and the reliability is good; small volume and low overall manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of the transmission output assembly of the agricultural tractor of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural view of the engaging tooth seat of the transmission output assembly of the agricultural tractor according to the present invention;
FIG. 4 is a schematic structural view of a driven gear of the transmission output assembly of the agricultural tractor according to the present invention;
FIG. 5 is a schematic structural view of a bushing of the transmission output assembly of the agricultural tractor according to the present invention;
FIG. 6 is a schematic view of the oil groove of the bushing of the transmission output assembly of the agricultural tractor according to the present invention;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;
fig. 8 is a schematic structural view of the meshing gear sleeve of the transmission output assembly of the agricultural tractor of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 8, the utility model provides an agricultural tractor transmission output assembly, which is installed in a transmission case body 1 and connected with an output shaft in the transmission case body (gearbox), and comprises a power input component and a power output component.
The structure of the two components is explained in detail below;
the power input assembly is used for power input and comprises a power input shaft 2, a first driving gear 31, a second driving gear 32 and a spacer 33, wherein the power input shaft is connected with an output shaft of the gearbox, preferably, the power input shaft is the output shaft of the gearbox, the power input shaft is rotatably installed in the gearbox through two bearings, the first driving gear, the spacer and the second driving gear are fixed on the power input shaft through splines, the spacer is located between the first driving gear and the second driving gear, two ends of the spacer are respectively in contact with the end faces of the first driving gear and the second driving gear to realize axial positioning, and the other end faces of the first driving gear and the second driving gear are in contact with the end faces of inner rings of the bearings to realize axial limiting in the other direction.
The power output assembly is used for power output and is connected with the power input assembly, concretely, the power output assembly comprises a power output shaft 4, a first driven gear 5, a second driven gear 7, a meshing tooth holder 8 and a meshing tooth sleeve 9, the power output shaft is parallel to the power input shaft and is rotatably installed in a transmission box body through two first shaft 11 bearings, the first driven gear and the second driven gear are respectively rotatably installed on the power output shaft through a bushing, the sleeve comprises a cylindrical sleeve 6, a spline is arranged on the inner wall of the sleeve 6 to realize radial limiting, the end part of the outer end of the sleeve is radially outwards bent to form a limiting part 61 along with synchronous rotation of the power output shaft, the first driven gear or the second driven gear is rotatably installed outside the sleeve, and the end part of the first driven gear or the second driven gear is contacted with the limiting part to realize axial limiting of the first driven gear and the second driven gear, meanwhile, the other end of the limiting part is in contact with the end face of the inner ring of the first bearing, so that the axial limiting of the bushing is realized; in order to improve the rotational stability of the first driven gear and the second driven gear, a spiral oil groove 601 is arranged on the outer wall of the sleeve, two ends of the oil groove extend out of the end face of the sleeve, lubricating oil can be introduced between the bushing and the first driven gear and the second driven gear, the lubricating effect is improved, the thread pitch of the oil groove is the same as the axial width of the sleeve, namely the whole oil groove is a circle, the cross section of the oil groove is arc-shaped, the radius of the oil groove is 1-2mm, the depth H of the oil groove is smaller than the radius, and in the embodiment, the depth of the oil groove is 0.5 mm; the first driven gear is meshed with the first driving gear, the second driven gear is meshed with the second driving gear, the number of teeth of the first driving gear is smaller than that of teeth of the first driven gear, the number of teeth of the second driving gear is smaller than that of teeth of the second driven gear, therefore, the whole speed reduction effect is achieved, and the transmission ratios of the first driving gear and the second driving gear are different, so that rapid high-speed and low-speed switching is achieved; the engaging tooth seat is fixed on a power output shaft through a spline and is positioned between the first driven gear and the second driven gear, two ends of the engaging tooth seat are respectively contacted with the end parts of the first driven gear and the second driven gear to axially limit the engaging tooth seat, the engaging tooth seat is integrally cylindrical, a first gear tooth 81 is arranged on the outer wall of the engaging tooth seat, the end parts of the first driven gear and the second driven gear extend to one side of the engaging tooth seat and form a connecting part, the connecting part is also integrally cylindrical and has a diameter smaller than the reference circle diameter of the driven gear, an annular groove 53 is arranged at the root part of the connecting part, the outer diameter of the connecting part is the same as that of the engaging tooth seat, a second gear tooth 51 which is the same as the first gear tooth is arranged on the outer wall of the connecting part, namely the modulus, the number and the tooth type of the gear tooth are the same, the engaging tooth sleeve is sleeved outside the engaging tooth seat and can axially move, a third gear tooth 91 which can be engaged with the first gear tooth, the outer wall of the meshing gear sleeve is provided with an annular groove 92 for clamping the shifting fork, the annular groove and the meshing gear sleeve are coaxially arranged, the shifting fork can shift the shifting fork to axially move, when the meshing gear sleeve moves to the left end, the first driven gear and the meshing gear seat can be connected, the first driven gear drives the power output shaft to rotate, when the meshing gear sleeve moves to the right end, the second driven gear and the meshing gear seat can be connected, the second driven gear drives the power output shaft to rotate, therefore, the axial width of the meshing gear sleeve is smaller than that of the meshing gear seat, the end part of the power output shaft penetrates through an end cover 10 of the side wall of the transmission box body and extends out of the transmission box body to form an output end, the power output shaft comprises a first shaft body 41, a second shaft body 42 and a third shaft body 43 which are sequentially connected and have sequentially increased diameters, wherein the first driven gear, the meshing gear seat and the second driven gear are installed on the first shaft body, the first bearing is installed on the second shaft body, the outer ring of the first bearing is provided with a clamping ring 12 for limiting installation of the first bearing, a step surface is formed between the second shaft body and the third shaft body, the step surface is in end surface contact with the inner ring of the first bearing to achieve axial limiting, an oil seal 14 is arranged between the third shaft body and the end cover to improve sealing effect, two oil seals are arranged in the embodiment, and the end portion of the third shaft body is provided with a fourth shaft body 44 which extends out of the transmission case and forms an output end.
The utility model discloses agricultural tractor transmission output assembly does high-low speed switching to the output shaft of gearbox, has improved variable speed and moment of torsion scope, can adapt to different use operating modes, satisfies different user demands; the operation is simple, the operation is stable, and the reliability is good; small volume and low overall manufacturing cost.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides an agricultural tractor transmission output assembly, installs in the transmission case, its characterized in that includes:
the power input assembly is used for power input and comprises a power input shaft, a first driving gear, a second driving gear and a spacer bush, wherein the power input shaft is rotatably arranged in the transmission box, the first driving gear, the spacer bush and the second driving gear are fixed on the power input shaft through splines, and the spacer bush is positioned between the first driving gear and the second driving gear;
the power output assembly is used for power output and comprises a power output shaft, a first driven gear, a second driven gear, an engaging tooth holder and an engaging tooth sleeve, wherein the power output shaft is parallel to the power input shaft and is rotatably arranged in the transmission box body, the first driven gear and the second driven gear are rotatably arranged on the power output shaft and are respectively engaged with the first driving gear and the second driving gear, the engaging tooth holder is fixed on the power output shaft and is positioned between the first driven gear and the second driven gear, first gear teeth are arranged on the outer wall of the engaging tooth holder, the end parts of the first driven gear and the second driven gear extend towards one side of the engaging tooth holder to form a connecting part, the outer diameter of the connecting part is the same as that of the engaging tooth holder, second gear teeth which are the same as the first gear teeth are arranged on the outer wall of the connecting part, the meshing tooth cover is established outside the meshing tooth seat, and can axial displacement, the inner wall of meshing tooth cover be equipped with can mesh in the third teeth of a cogwheel of first teeth of a cogwheel and second teeth of a cogwheel, the outer wall of meshing tooth cover is equipped with the annular groove that holds the shift fork card and go into, power output shaft's tip extends to outside the transmission case and form the output.
2. An agricultural tractor drive output assembly as defined in claim 1, wherein: the first driven gear and the second driven gear are rotatably mounted on the power output shaft through a bushing respectively, the bushing comprises a sleeve, the inner wall of the sleeve is provided with a spline, the end part of the sleeve is bent outwards in the radial direction to form a limiting part, and the limiting part is in contact with the end part of the first driven gear or the second driven gear.
3. An agricultural tractor drive output assembly as defined in claim 2, wherein: the outer wall of the sleeve is provided with a spiral oil groove, and two ends of the oil groove extend to the outside of the sleeve.
4. An agricultural tractor drive output assembly as defined in claim 3, wherein: the thread pitch of the oil groove is the same as the axial width of the sleeve.
5. An agricultural tractor drive output assembly as defined in claim 2, wherein: the power output shaft is rotatably arranged in the transmission box body through two first bearings, and the limiting part is in contact with the end faces of the inner rings of the first bearings.
6. An agricultural tractor drive output assembly as defined in claim 2, wherein: the transmission ratio between the first driving gear and the first driven gear is i1, the transmission ratio between the second driving gear and the second driven gear is i2, and 2 is more than or equal to i1/i2 is more than or equal to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020640666.4U CN212055699U (en) | 2020-04-25 | 2020-04-25 | Transmission output assembly of agricultural tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020640666.4U CN212055699U (en) | 2020-04-25 | 2020-04-25 | Transmission output assembly of agricultural tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055699U true CN212055699U (en) | 2020-12-01 |
Family
ID=73517431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020640666.4U Active CN212055699U (en) | 2020-04-25 | 2020-04-25 | Transmission output assembly of agricultural tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212055699U (en) |
-
2020
- 2020-04-25 CN CN202020640666.4U patent/CN212055699U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Benye Tractor Manufacturing Co.,Ltd. Assignor: NINGBO BENYE HEAVY INDUSTRY CO.,LTD. Contract record no.: X2023330000791 Denomination of utility model: A transmission output assembly for agricultural tractors Granted publication date: 20201201 License type: Common License Record date: 20231026 |
|
| EE01 | Entry into force of recordation of patent licensing contract |