CN213808789U - Transition connecting device for tractor gearbox - Google Patents
Transition connecting device for tractor gearbox Download PDFInfo
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- CN213808789U CN213808789U CN202022226137.2U CN202022226137U CN213808789U CN 213808789 U CN213808789 U CN 213808789U CN 202022226137 U CN202022226137 U CN 202022226137U CN 213808789 U CN213808789 U CN 213808789U
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- lubricating oil
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Abstract
A transition connection device for a tractor gearbox is arranged between an engine and the gearbox and comprises a transition box body, an input gear shaft system, an idler shaft system and an output gear shaft system which are arranged in the transition box body and connected in a parallel transmission mode, and a lubricating system which is used for forcibly lubricating bearings in the input gear shaft system and the idler shaft system and performing splash lubrication on the bearings in the output gear shaft system. The utility model discloses optimize the overall arrangement to transition connection device's lubricating system for the lubricating system of whole device is reliable stable, with satisfy high-power tractor gearbox transitional coupling of shifting to the requirement of lubricity.
Description
Technical Field
The utility model belongs to the tractor field, concretely relates to transitional coupling device that tractor gearbox was used.
Background
With the rapid development of domestic high-power gear shifting tractors, domestic tractor manufacturers are accelerating the research and development of high-power gear shifting tractor products. However, the power shifting gearbox structure has high development cost, so that the high-power tractor generally adopts the development concept of whole machine serialization and modularization so as to reduce the development cost. In the application process of the modularization of the gearbox, in order to improve the adaptability and the power range of the gearbox, the development of a transitional connection device for the gearbox is particularly necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transitional coupling device that tractor gearbox was used optimizes the overall arrangement to transitional coupling device's lubricating system for the lubricating system of whole device is reliable stable, with satisfying the requirement of high-power tractor gearbox transitional coupling to the lubricity.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a transition connecting device for a tractor gearbox is arranged between an engine and the gearbox and comprises a transition box body, an input gear shaft system, an idle gear shaft system and an output gear shaft system, wherein the input gear shaft system, the idle gear shaft system and the output gear shaft system are arranged in the transition box body and are in parallel transmission connection; the transition box body is provided with a lubricating oil pipe joint, a lubricating channel is arranged in the transition box body and comprises a main lubricating oil channel, an input shaft lubricating oil channel, an idler shaft lubricating oil channel, an oil guide sleeve and a connecting oil channel, and the main lubricating oil channel is connected with the lubricating oil pipe joint; the input shaft lubricating oil channel is arranged in the input gear shaft and extends along the axial direction, the input shaft lubricating oil channel is communicated with the main lubricating oil channel through the oil guide sleeve, an oil passing gap is formed between the oil guide sleeve and the input shaft lubricating oil channel, an input shaft lubricating oil hole communicated with the input shaft lubricating oil channel is formed in the input gear shaft along the radial direction, and lubricating oil respectively lubricates two bearings of the input gear shaft system through the oil passing gap and the input shaft lubricating oil hole; the lubricating oil channel of the idler shaft is arranged in the idler shaft and extends along the axial direction, the inlet of the lubricating oil channel of the idler shaft is communicated with the main lubricating oil channel through the connecting oil channel, and an idler shaft lubricating oil hole communicated with the lubricating oil channel of the idler shaft is arranged on the idler shaft along the radial direction so as to lubricate a bearing of an idler shaft system; and a lubricating oil groove is formed in the bottom of the transition box body to receive the dropped lubricating oil, and one part of the output gear shaft system is immersed in the lubricating oil groove.
The connecting oil duct is of a cross-shaped structure and consists of a connecting oil duct horizontal branch and a connecting oil duct vertical branch, the connecting oil duct horizontal branch is perpendicular to the main lubricating oil duct and the input shaft lubricating oil duct respectively, the connecting oil duct vertical branch is perpendicular to the idler shaft lubricating oil duct, and the tail ends of the connecting oil duct horizontal branch and the connecting oil duct vertical branch are opened on the surface of the transition box body and are blocked by sealing plugs.
An oil drain plug is arranged at the bottom of the lubricating oil groove of the transition box body, and an oil passing hole communicated with the gearbox is further formed in the side face of the transition box body so as to discharge redundant lubricating oil in the lubricating oil groove.
The input gear shaft is installed in the transition box body through a first bearing and a second bearing, the lubricating oil outflow end of the oil passing gap is located on one side of the second bearing, and the lubricating oil outflow end of the input gear lubricating oil hole is opened on one side of the first bearing.
The input gear shaft is fixedly connected with the connecting flange, and the connecting flange is connected with a flywheel of the engine through the torsion damper assembly.
The outer side of the first bearing is provided with a first bearing cover, the first bearing cover is fixed on the transition box body, the inner hole of the connecting flange is provided with a baffle, the connecting flange and the input gear shaft are connected into a whole through a connecting device, and sealing structures are respectively arranged between the baffle and the connecting flange, between the connecting flange and the inner hole of the first bearing cover, and between the first bearing cover and the transition box body.
The idler shaft is provided with an idler through two third bearings, a check ring is arranged between the two third bearings, a lubricating oil hole of the idler shaft is opened between the two third bearings, and a sealing structure is arranged between the idler shaft and the transition box body.
The idler shaft is axially positioned through a cover plate, the cover plate is fixed on the transition box body, and fixing pins are eccentrically installed on the cover plate and the idler shaft and used for limiting rotation of the idler shaft.
The two ends of an output gear shaft in the output gear shaft system are respectively supported on the first bearing and the fourth bearing, a second bearing cover is installed on the outer side of the fourth bearing, and a sealing structure is arranged between the second bearing cover and the transition box body.
The transition box body is fastened on the gearbox, and the lubricating oil pipe joint is in threaded connection with the top of the transition box body.
The utility model has the advantages that: firstly, the input gear shafting that the position is higher in this device and the bearing of idler shafting adopt the mode of force supply lubricating oil to lubricate, and the output gear shafting bearing that the position is the lowest adopts splash lubrication, and this kind of differentiation configuration makes whole device lubricating system reliable and stable, and simple structure can satisfy high-power tractor gearbox transitional coupling's needs.
Secondly, the bottom of the device is provided with the oil passing hole and communicated with the inner cavity of the gearbox, so that the lubricating oil with a certain height can be always accumulated at the bottom of the device, and the redundant lubricating oil flows into the inner cavity of the gearbox, thereby not only satisfying the lubrication of the output gear shaft bearing, but also avoiding the overlarge oil stirring loss.
And thirdly, the bottommost part of the device is provided with an oil drain plug, so that bottom lubricating oil can be drained firstly in the maintenance and disassembly processes, and the lubricating oil is prevented from polluting disassembly personnel and the surrounding environment.
Fourthly, the device adopts a three-shaft arrangement, and is provided with an input gear shaft system, an idler gear shaft system and an output gear shaft system, so that the rotating direction of the input shaft of the gearbox is ensured to be the same as that of the engine flywheel, the control of the rotating directions of the gearbox of the tractor and the power output gear is facilitated, and the problem of large drop between the axis of the engine flywheel and the axis of the input shaft of the gearbox in the modularized application process of the gearbox is solved.
Fifthly, the adaptability and the use power range of the gearbox are improved through the speed-up and torque-down functions of the transition connecting device, and the modularization and serialization application of the whole gearbox is facilitated.
Drawings
FIG. 1 is a schematic view of the connection relationship between the present invention and an engine and a transmission;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a partial enlarged view of enlarged portion I of FIG. 3;
fig. 5 is a left side view of the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
the labels in the figure are: 1. an engine; 2. a torsional damper assembly; 3. a transition connection device; 4. a lubricating oil pipe joint; 5. a gearbox; 5.1, a transmission input shaft; 3.1, a first bolt; 3.2, a transition box body; 3.3, a second bolt; 3.4, connecting a flange; 3.5, a first bearing cover; 3.6, a first O-shaped ring; 3.7, a first bearing; 3.8, an input gear shaft; 3.9, a second bearing; 3.10, oil guide sleeve; 3.11, an idler wheel; 3.12, a check ring; 3.13, a third bearing; 3.14, spacer bush; 3.15, an oil drain plug; 3.16, a fourth bearing; 3.17, a second bearing cover; 3.18, an output gear shaft; 3.19, a cylindrical pin; 3.20, an idler shaft; 3.21, a cover plate; 3.22, a second O-ring; 3.23, oil sealing; 3.24, a third O-ring; 3.25, locking bolts; 3.26, a lock washer; 3.27, a baffle; 3.28, sealing plug; 3a, a main lubricating oil channel; 3b, an input shaft lubricating oil channel; 3c, an input shaft lubricating oil hole; 3d, lubricating oil holes of the idler shaft; 3e, lubricating oil channels of the idler shaft; 3f, oil passing holes; 3g, oil passing clearance; 3h, connecting the vertical branches of the oil passages; and 3j, connecting the horizontal branch of the oil passage.
Detailed Description
The following detailed description of the present invention is provided with reference to the accompanying drawings and examples, but not to be construed as limiting the present invention in any way.
Referring to the attached drawings, the transition connecting device 3 is arranged between an engine 1 and a gearbox 5, one side of the transition connecting device 3 is connected with a flywheel of the engine 1 through a torsion damper assembly 2, the other side of the transition connecting device is connected with a gearbox input shaft 5.1, and the transition connecting device 3 is fixedly arranged on a gearbox 5 box body.
The structure of the transition connecting device 3 comprises a first bolt 3.1, a transition box body 3.2, a second bolt 3.3, a connecting flange 3.4, a first bearing cover 3.5, a first O-shaped ring 3.6, a first bearing 3.7, an input gear shaft 3.8, a second bearing 3.9, an oil guide sleeve 3.10, an idler wheel 3.11, a retainer ring 3.12, a third bearing 3.13, a spacer sleeve 3.14, an oil drain plug 3.15, a fourth bearing 3.16, a second bearing cover 3.17, an output gear shaft 3.18, a cylindrical pin 3.19, an idler wheel shaft 3.20, a cover plate 3.21, a second O-shaped ring 3.22, an oil seal 3.23, a third O-shaped ring 3.24, a locking bolt 3.25, a locking gasket 3.26, a baffle 3.27 and a sealing plug 3.28.
The transition box body 3.2 is fastened on a box body of the gearbox 5 through the second bolt 3.3, an input gear shaft system, an idle gear shaft system and an output gear shaft system are arranged in the transition box body 3.2 from top to bottom, the three shaft systems are in transmission connection, the input gear shaft system comprises an input gear shaft 3.8, a connecting flange 3.4 is further installed on the input gear shaft 3.8 through a spline, the connecting flange 3.4 is connected with the torsion damper assembly 2, the output gear shaft system comprises an output gear shaft 3.18, the output gear shaft 3.18 is connected with the gearbox input shaft 5.1 through a spline, and power of the engine 1 is transmitted to the gearbox input shaft 5.1 through the matching of the three shaft systems.
In the input gear shaft system, an input gear shaft 3.8 is supported on a first bearing cover 3.5 and the inner wall of a transition box body 3.2 through a first bearing 3.7 and a second bearing 3.9, the first bearing cover 3.5 is positioned and installed on the transition box body 3.2 through a spigot, and the first bearing cover 3.5 is fixed on the transition box body 3.2 through a first bolt 3.1; be equipped with baffle 3.27 in flange 3.4's the hole, baffle 3.27 is located the axle head of input gear axle to connect baffle 3.27, flange 3.4 and input gear axle 3.8 as an organic wholely with lockbolt 3.25 and lock washer 3.26, baffle 3.27 with be equipped with third O type circle 3.24 between the flange 3.4 circle, flange 3.4 excircle with be equipped with oil blanket 3.23 between the hole of first bearing cover 3.5, first bearing cover 3.5 with be equipped with first O type circle 3.6 between the transition box body 3.2, first O type circle 3.6, third O type circle 3.24 and oil blanket 2.23 form the radial and axial sealed to input gear axle 3.8.
In the idle wheel shaft system, the idle wheel shaft 3.20 is radially supported in the transition box body 3.2, the idle wheel shaft 3.20 is axially positioned by a cover plate 3.21 fixed on the transition box body 3.2 through a first bolt 3.1, in order to avoid the rotation of the idle wheel shaft 3.20, a cylindrical pin 3.19 is eccentrically arranged on the cover plate 3.21 and the idle wheel shaft 3.20, and a second O-shaped ring 3.22 is further arranged between the idle wheel shaft 3.20 and the transition box body 3.2 to radially seal the idle wheel shaft 3.20. The idler shaft 3.20 is rotatably provided with an idler 3.11 through two third bearings 3.13, the idler 3.11 is respectively meshed with the input gear shaft 3.8 and the output gear shaft 3.18, and a retainer ring 3.12 is arranged between the two third bearings 3.13; the inner wall of the transition box body 3.2 is provided with a spacer 3.14, and the spacer 3.14 is matched with a shaft shoulder of the idler shaft 3.20 to axially position the two third bearings 3.13.
In the output gear shaft system, the output gear shaft 3.18 is supported on the inner walls of the second bearing cover 3.17 and the transition box body 3.2 through the first bearing 3.7 and the fourth bearing 3.16, the second bearing cover 3.17 is positioned on the transition box body 3.2 through a spigot and is fastened on the transition box body 3.2 through the first bolt 3.1, and the output gear shaft 3.18 is radially sealed through the first O-shaped ring 3.6.
The lubrication system in the transition joint 3 will be described in detail below.
A lubricating oil pipe joint 4 is in threaded connection with the transition box body 3.2, a lubricating channel is arranged in the transition box body 3.2 and comprises a main lubricating oil channel 3a, an input shaft lubricating oil channel 3b, an idler shaft lubricating oil channel 3e, an oil guide sleeve 3.10 and a connecting oil channel, and the main lubricating oil channel 3a is communicated with the lubricating oil pipe joint 4.
Input shaft lubrication oil duct 3b sets up in the center of input gear shaft 3.8 to extend along the axial, input shaft lubrication oil duct 3b with pass through between the main lubrication oil duct 3a lead oil jacket 3.10 intercommunication, be equipped with between the outer disc of leading oil jacket 3.10 and the inner wall of input shaft lubrication oil duct 3b and cross oily clearance 3g, be equipped with the intercommunication on the input gear shaft 3.8 along radial input shaft lubrication oil hole 3c of input shaft lubrication oil duct 3b, lubricating oil passes through cross oily clearance 3g and lubricate second bearing 3.9, lubricate first bearing 3.7 through input shaft lubrication oil hole 3 c.
The idler shaft lubricating oil passage 3e is arranged in the center of the idler shaft 3.20 and extends in the axial direction, the inlet of the idler shaft lubricating oil passage 3e is communicated with the main lubricating oil passage 3a through the connecting oil passage, and an idler shaft lubricating oil hole 3d communicated with the idler shaft lubricating oil passage 3e is formed in the idler shaft 3.20 in the radial direction so as to lubricate the third bearing 3.13; a lubricating oil groove is formed in the bottom of the transition box body 3.2 to receive the dropped lubricating oil, a part of the output gear shaft system is immersed in the lubricating oil groove, and in the rotating process of the output gear shaft 3.18, the lubricating oil accumulated at the bottom of the transition box body 3.2 is stirred to form splashed oil to lubricate a fourth bearing 3.16 and a first bearing 3.7 in the output gear shaft system.
An oil drain plug 3.15 is arranged at the bottom of a lubricating oil groove of the transition box body 3.2, an oil passing hole 3f communicated with the gearbox 5 is further arranged on the side face of the transition box body 3.2, and after lubricating oil is accumulated to the height of an orifice of the oil passing hole 3f, the lubricating oil flows into the gearbox 5 from the oil passing hole 3 f.
The connecting oil duct is of a cross-shaped structure and comprises a connecting oil duct horizontal branch 3j and a connecting oil duct vertical branch 3h, the connecting oil duct horizontal branch 3j is perpendicular to a main lubricating oil duct 3a and an input shaft lubricating oil duct 3b respectively, the connecting oil duct vertical branch 3h is perpendicular to an idler shaft lubricating oil duct 3e, the tail ends of the connecting oil duct horizontal branch 3j and the connecting oil duct vertical branch 3h are opened on the surface of the transition box body 3.2 and are blocked by sealing plugs 3.28, lubricating oil is prevented from flowing out, and external impurities such as dust, muddy water and the like can be prevented from entering a lubricating system to pollute the lubricating oil.
The utility model discloses a transmission process as follows: the engine 1 drives the connecting flange 3.4 in the transition connecting device 3 to rotate in the same direction and at the same speed through the torsional damper assembly 2, the connecting flange 3.4 is connected with the input gear shaft 3.8 through a spline and then drives the input gear shaft 3.8 to rotate in the same direction, the input gear shaft 3.8 and the idle gear 3.11 are a pair of externally meshed helical gears and then drives the idle gear 3.11 to rotate in the reverse direction, the idle gear 3.11 and the output gear shaft 3.18 are also a pair of externally meshed helical gears and then the output gear shaft 3.18 and the engine 1 rotate in the same direction, the total transmission ratio is the ratio of the number of teeth of the output gear shaft 3.18 to the number of teeth of the input gear shaft 3.8, the rotating speed of the output gear shaft 3.18 is equal to the rotating speed of the engine 1 except that the total transmission ratio, the output gear shaft 3.18 and the input shaft 5.1 of the gearbox are connected together through a spline, so that the gearbox input shaft 5.1 and the output gear shaft 3.18 rotate at the same speed in the same direction, and finally the power of the engine 1 is transmitted to the gearbox 5 in the same direction.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the embodiments of the present invention can be modified or replaced with equivalents with reference to the above embodiments, and any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are all within the scope of the claims of the present application.
Claims (10)
1. A transition connecting device for a tractor gearbox is arranged between an engine and the gearbox and comprises a transition box body, an input gear shaft system, an idle gear shaft system and an output gear shaft system, wherein the input gear shaft system, the idle gear shaft system and the output gear shaft system are arranged in the transition box body and are in transmission connection; the method is characterized in that: the transition box body is provided with a lubricating oil pipe joint, a lubricating channel is arranged in the transition box body and comprises a main lubricating oil channel, an input shaft lubricating oil channel, an idler shaft lubricating oil channel, an oil guide sleeve and a connecting oil channel, and the main lubricating oil channel is connected with the lubricating oil pipe joint; the input shaft lubricating oil channel is arranged in the input gear shaft and extends along the axial direction, the input shaft lubricating oil channel is communicated with the main lubricating oil channel through the oil guide sleeve, an oil passing gap is formed between the oil guide sleeve and the input shaft lubricating oil channel, an input shaft lubricating oil hole communicated with the input shaft lubricating oil channel is formed in the input gear shaft along the radial direction, and lubricating oil respectively lubricates two bearings in the input gear shaft system through the oil passing gap and the input shaft lubricating oil hole; the lubricating oil channel of the idler shaft is arranged in the idler shaft and extends along the axial direction, the inlet of the lubricating oil channel of the idler shaft is communicated with the main lubricating oil channel through the connecting oil channel, and an idler shaft lubricating oil hole communicated with the lubricating oil channel of the idler shaft is arranged on the idler shaft along the radial direction so as to lubricate a bearing in an idler shaft system; and a lubricating oil groove is formed in the bottom of the transition box body to receive the falling lubricating oil, and one part of the output gear shaft system is immersed in the lubricating oil groove.
2. The transition connection arrangement for a tractor transmission of claim 1, further comprising: the connecting oil duct is of a cross-shaped structure and consists of a connecting oil duct horizontal branch and a connecting oil duct vertical branch, the connecting oil duct horizontal branch is perpendicular to the main lubricating oil duct and the input shaft lubricating oil duct respectively, the connecting oil duct vertical branch is perpendicular to the idler shaft lubricating oil duct, the tail ends of the connecting oil duct horizontal branch and the connecting oil duct vertical branch are opened on the surface of the transition box body, and the opening is sealed by a sealing plug.
3. The transition connection arrangement for a tractor transmission of claim 1, further comprising: an oil drain plug is arranged at the bottom of the lubricating oil groove of the transition box body, and an oil passing hole communicated with the gearbox is further formed in the side face of the transition box body so as to discharge redundant lubricating oil in the lubricating oil groove.
4. The transition connection arrangement for a tractor transmission of claim 1, further comprising: the input gear shaft is installed in the transition box body through a first bearing and a second bearing, the lubricating oil outflow end of the oil passing gap is located on one side of the second bearing, and the lubricating oil outflow end of the input gear lubricating oil hole is located on one side of the first bearing.
5. The transition connection apparatus for a tractor transmission according to claim 4, wherein: the input gear shaft is fixedly connected with the connecting flange, and the connecting flange is connected with a flywheel of the engine through the torsion damper assembly.
6. The transition connection apparatus for a tractor transmission according to claim 5, wherein: the outer side of the first bearing is provided with a first bearing cover, the first bearing cover is fixed on the transition box body, the inner hole of the connecting flange is provided with a baffle, the connecting flange and the input gear shaft are connected into a whole through a connecting device, and sealing structures are respectively arranged between the baffle and the connecting flange, between the connecting flange and the inner hole of the first bearing cover, and between the first bearing cover and the transition box body.
7. The transition connection arrangement for a tractor transmission of claim 1, further comprising: the idler shaft is provided with an idler through two third bearings, a check ring is arranged between the two third bearings, a lubricating oil hole of the idler shaft is opened between the two third bearings, and a sealing structure is arranged between the idler shaft and the transition box body.
8. A transitional coupling for a tractor transmission as claimed in claim 7, wherein: the idler shaft is axially positioned through a cover plate, the cover plate is fixed on the transition box body, and fixing pins are eccentrically installed on the cover plate and the idler shaft and used for limiting rotation of the idler shaft.
9. The transition connection arrangement for a tractor transmission of claim 1, further comprising: the two ends of an output gear shaft in the output gear shaft system are respectively supported on the first bearing and the fourth bearing, a second bearing cover is installed on the outer side of the fourth bearing, and a sealing structure is arranged between the second bearing cover and the transition box body.
10. The transition connection arrangement for a tractor transmission of claim 1, further comprising: the transition box body is fastened on the gearbox, and the lubricating oil pipe joint is in threaded connection with the top of the transition box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022226137.2U CN213808789U (en) | 2020-10-09 | 2020-10-09 | Transition connecting device for tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022226137.2U CN213808789U (en) | 2020-10-09 | 2020-10-09 | Transition connecting device for tractor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213808789U true CN213808789U (en) | 2021-07-27 |
Family
ID=76956891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022226137.2U Active CN213808789U (en) | 2020-10-09 | 2020-10-09 | Transition connecting device for tractor gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213808789U (en) |
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2020
- 2020-10-09 CN CN202022226137.2U patent/CN213808789U/en active Active
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