CN201212546Y - Low speed gear box attached on tractor - Google Patents
Low speed gear box attached on tractor Download PDFInfo
- Publication number
- CN201212546Y CN201212546Y CNU2008201149761U CN200820114976U CN201212546Y CN 201212546 Y CN201212546 Y CN 201212546Y CN U2008201149761 U CNU2008201149761 U CN U2008201149761U CN 200820114976 U CN200820114976 U CN 200820114976U CN 201212546 Y CN201212546 Y CN 201212546Y
- Authority
- CN
- China
- Prior art keywords
- gear
- low speed
- output
- tractor
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a tractor, in particular to an ancillary low speed gearbox for the tractor. The ancillary low speed gearbox is installed on the rear end surface of a main gearbox, and comprises a gearbox shell, an input gear shaft, an output gear, a transmission axle, a duplicate gear, a sliding sleeve and a high and low gear operating mechanism. The power of an engine is input to the ancillary low speed gearbox via the input gear shaft, a gear on the input gear shaft is meshed with the bull gear of the duplicate gear, a pinion in the duplicate gear is meshed with the output gear, the internal spline of the output gear is combined with an external spline on the outer surface of the sliding sleeve, the torque after being increased is transmitted to a small conical gear shaft, thereby the low-speed output of the ancillary low speed gearbox is realized. The handle of the high and low gear operating mechanism is rotated, the sliding sleeve is separated form the internal spline of the output gear, and is combined with the external spline at the output end of the input gear shaft, and the gearbox carries out output at high speed. Under the precondition that the structure of the main gearbox is not changed, the gears of the main gearbox are extended to 16+8 gears from 8+4 gears, thereby the range of travelling speed of the tractor is effectively extended.
Description
Technical field
The utility model relates to tractor, particularly relates to a kind of gear box of tractor.
Background technique
Original 8 forward gears of 40 serial gear box of tractor, 4 retainings that fall back are called the 8+4 retaining.Except that reversing gear, all the other are the gearshift of engagement cover.Power has extended to 50-55 horsepower after strengthening.Market significantly increases the big-power tractor demand in recent years, but the user also proposes new requirement to the tractor performance.At first, after requiring to increase engine power, can improve farming efficient, improve cultivating quality, reduce fuel consumption rate; Adapt to multiple agriculture requirement, can finish several work.As: ditch, plant, rotary tillage, ploughing, plant protection, results, transportation, etc.; Except that agricultural use, industry and engineering also claim to tractor: if can finish several work such as trench digging, pipeline installation, soil-shifting and loading.Satisfy above-mentioned requirements, then require tractor that the speed of travel that adapts with above-mentioned operation must be arranged.In order to save cost, need under the prerequisite that does not change the main-gear box structure, enlarge tractor speed of travel scope effectively.
The model utility content
Technical problem to be solved in the utility model is to solve under the prerequisite that does not change the main-gear box structure, enlarges the problem of tractor speed of travel scope effectively.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopted provides a kind of tractor additional low speed gearbox, it is installed on the main-gear box ear end face, comprise gear box casing, the input gear shaft, output gear, transmission shaft, duplicate gear, engagement cover and high and low retaining operating mechanism.Gear box casing, the outer circumferential face of its input end is provided with flange, and described flange is provided with some bolts and installs through hole; The input gear shaft, its output terminal is provided with external splines, is installed in the gear box casing; Output gear is sleeved on the outside of the gear on the described input gear shaft, and fixedlys connected with the input gear shaft, and the output gear output terminal is provided with the endoporus greater than input gear shaft diameter, and the inner peripheral surface of described endoporus is provided with internal spline; Transmission shaft is installed in the gear box casing, and parallel with described input gear shaft; Duplicate gear, transition fit are connected on the transmission shaft, the gearwheel of duplicate gear and the gear engagement of importing on the gear shaft; Small gear and output gear engagement; The engagement cover, outer surface is provided with external splines, with the internal spline engagement of output gear outer end; The internal surface of engagement cover is provided with internal spline, with the external splines engagement on the input gear shaft; High and low retaining operating mechanism is fixedlyed connected with engagement cover, is used to adjust combining and disengaging of engagement cover and output gear.
The utility model also comprises axle sleeve, is shaped as the welding neck flange shape, and described axle sleeve is sleeved between transmission shaft and the duplicate gear, and the flange exterior edge face of axle sleeve is arranged on input end one side of additional low speed gearbox.
The utility model also comprises rolling bearing and needle bearing, and described rolling bearing is arranged on output gear and gear box casing connecting part; Described needle bearing is arranged on the connecting part of gear shaft and output gear.
The utility model also comprises bearing cap, is sleeved on the output terminal of gear shaft, and fixedlys connected with the gear box casing output terminal.
The utility model also comprises supporting sleeve, is arranged on the connecting part of sleeve outer surface and gear box casing.
The utility model also comprises lining, and described lining is inlaid in the endoporus of duplicate gear, and the material of lining is a tin bronze.
The utility model is installed on the main-gear box ear end face, under the prerequisite that does not change the main-gear box structure, makes the main-gear box gear expand as the 16+8 retaining by the 8+4 retaining.The scalable transformation of tractor to the 40 serial gearboxes that assemble 8+4 retaining can enlarge tractor speed of travel scope, adapts to more agriculture requirement.Owing to do not need to manufacture and design new gearbox, on the one hand, can reduce investment outlay; On the other hand, this structure is simpler, and cost is low, is easy to make in batches.Make the very limited of complete machine cost increase after the installation, be fit to present stage peasant's ability to bear.
Description of drawings
Structural representation when Fig. 1 works for the utility model bottom gear;
Structural representation when Fig. 2 works for the utility model top gear.
Embodiment
Below in conjunction with accompanying drawing the utility model is made detailed explanation.
The utility model comprises gear box casing 6, input gear shaft 1, output gear 4, transmission shaft 2, duplicate gear 8, engagement cover 12 and high and low retaining operating mechanism 9.
As shown in Figure 1, mounting type of the present utility model is: main-gear box 14, the utility model and the 40 serial tractor rear axles 15 of 40 serial tractors are located by two straight pins, with 10 high strength stud three parts are reliably connected.
The utility model is provided with the two-stage straight toothed spur gear and slows down, and resultant gear ratio is 2.533.Move engagement cover 12 on the small conical gear axle 13 of tractor central authorities transmission by rotating high and low retaining operating mechanism handle 9, realize articulating of the high and low retaining of additional low speed gearbox.
Be described in further detail working method of the present utility model below, as shown in Figure 1, drive path of the present utility model is: from the power of motor via 40 serial main-gear boxs 14 after, the torque that produces is input in the additional low speed gearbox by input gear shaft 1, the gearwheel engagement of gear on the input gear shaft 1 and duplicate gear 8, small gear in the duplicate gear 8 meshes with output gear 4 again, the internal spline of output gear 4 engages with the external splines of engagement cover 12 outer surfaces, give small conical gear axle 13 transmission of torque after increasing, realized the low speed output of additional low speed gearbox, this moment, velocity ratio was 2.533.
The utility model also comprises axle sleeve 7, described axle sleeve 7 is shaped as the welding neck flange shape, be sleeved between transmission shaft 2 and the duplicate gear 8, the flange-like exterior edge face of axle sleeve 7 is arranged on input end one side of additional low speed gearbox, connect with main-gear box 14 with the bearing outer ring location of the ear end face of main-gear box 14 and with bolt, the other end is bearing in the bearing hole of additional low speed gear box casing 6, in the present embodiment, also be provided with supporting sleeve 10 in the bearing hole of additional low speed gear box casing 6, axle sleeve 7 is inserted in the supporting sleeve 10.
The endoporus of duplicate gear 8 can be pressed into tin bronze bush and be bearing on the axle sleeve 7.
The output terminal of output gear 4 is provided with the endoporus greater than input input gear shaft diameter, the inner peripheral surface of described endoporus is provided with internal spline, internal spline has 2.5 degree back tapers, two deep groove ball bearings of suit or a cylindrical roller bearing and a deep groove ball bearing supporting on the outer peripheral surface of output gear 4 output terminals, in the present embodiment, preferentially adopt two deep groove ball bearing supportings 5.The outer end of bearing is provided with bearing cap 11, and fixedlys connected with additional low speed gear box casing 6.
The above is the low speed output transmission process of additional low speed gearbox, and the high speed output transmission process of additional low speed gearbox is described in detail in detail below.
As shown in Figure 2, rotate the handle of high and low retaining operating mechanism 9, engagement cover 12 is thrown off the internal spline of output gear 4, engage with the external splines of input gear shaft 1 output terminal, the idle running on input gear shaft 1 of output gear this moment, the velocity ratio of additional low speed gearbox is 1, and the additional low speed gearbox is exported at a high speed.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technological scheme, all fall within the protection domain of the present utility model.
Claims (7)
1, a kind of tractor additional low speed gearbox is characterized in that comprising:
Gear box casing, the outer circumferential face of its input end is provided with flange, and described flange is provided with some bolts and installs through hole;
The input gear shaft, its output terminal is provided with external splines, is installed in the gear box casing;
Output gear is sleeved on the outside of the gear on the described input gear shaft, and fixedlys connected with the input gear shaft, and the output terminal of output gear is provided with the endoporus greater than input gear shaft diameter, and the inner peripheral surface of described endoporus is provided with internal spline;
Transmission shaft is installed in the gear box casing, and parallel with described input gear shaft;
Duplicate gear, transition fit are connected on the transmission shaft, the gearwheel of duplicate gear and the gear engagement on the gear shaft; Small gear and output gear engagement;
The engagement cover, outer surface is provided with external splines, with the internal spline engagement of output gear outer end; The internal surface of engagement cover is provided with internal spline, with the external splines engagement on the gear shaft;
High and low retaining operating mechanism is fixedlyed connected with engagement cover, is used to adjust combining and disengaging of engagement cover and output gear.
2, tractor additional low speed gearbox according to claim 1, it is characterized in that it also comprises axle sleeve, be shaped as the welding neck flange shape, described axle sleeve is sleeved between transmission shaft and the duplicate gear, and the flange-like exterior edge face of axle sleeve is arranged on input end one side of additional low speed gearbox.
3, tractor additional low speed gearbox according to claim 1 is characterized in that it also comprises rolling bearing and needle bearing, and described rolling bearing is arranged on output gear and gear box casing connecting part; Described needle bearing is arranged on the connecting part of gear shaft and output gear.
4, tractor additional low speed gearbox according to claim 3 is characterized in that it also comprises bearing cap, is sleeved on the output terminal of gear shaft, and fixedlys connected with the gear box casing output terminal.
5, tractor additional low speed gearbox according to claim 2 is characterized in that it also comprises supporting sleeve, is arranged on the connecting part of sleeve outer surface and gear box casing.
6, tractor additional low speed gearbox according to claim 2 is characterized in that it also comprises lining, and described lining is inlaid in the endoporus of duplicate gear.
7, tractor additional low speed gearbox according to claim 6, the material that it is characterized in that described lining is a tin bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201149761U CN201212546Y (en) | 2008-05-09 | 2008-05-09 | Low speed gear box attached on tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201149761U CN201212546Y (en) | 2008-05-09 | 2008-05-09 | Low speed gear box attached on tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212546Y true CN201212546Y (en) | 2009-03-25 |
Family
ID=40496718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201149761U Expired - Fee Related CN201212546Y (en) | 2008-05-09 | 2008-05-09 | Low speed gear box attached on tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212546Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161888A (en) * | 2013-03-22 | 2013-06-19 | 泰安泰山国泰拖拉机制造有限公司 | Speed changer used for tractor |
-
2008
- 2008-05-09 CN CNU2008201149761U patent/CN201212546Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161888A (en) * | 2013-03-22 | 2013-06-19 | 泰安泰山国泰拖拉机制造有限公司 | Speed changer used for tractor |
| CN103161888B (en) * | 2013-03-22 | 2015-09-23 | 泰安泰山国泰拖拉机制造有限公司 | For the speed changer of tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20110509 |