CN209990868U

CN209990868U - Double-planet transmission assembly system of tractor

Info

Publication number: CN209990868U
Application number: CN201920816017.2U
Authority: CN
Inventors: 王鹏阳
Original assignee: Shandong Nongfu Transmission Technology Co Ltd
Current assignee: Shandong Nongfu Transmission Technology Co Ltd
Priority date: 2019-06-01
Filing date: 2019-06-01
Publication date: 2020-01-24
Anticipated expiration: 2029-06-01

Abstract

The utility model provides a tractor double planetary transmission subassembly system, including the planet wheel drive assembly that two sets of drive ratios are different, be first planet wheel drive assembly and second planet wheel drive assembly respectively, engine power changes the back through the gear train transmission in the gearbox, is connected with the power input end of first planet wheel drive assembly, and the power take off end of first planet wheel drive assembly is connected with the power input end of second planet wheel drive assembly, and the power take off end and the power distribution box of second planet wheel drive assembly are connected. This transmission system breaks traditional thinking custom, ensures the inconvenient condition case of gearbox leading gear cooperation, sets up two sets of interconnect's planet wheel transmission system in succession, and every planet wheel transmission has two gear changes to increased the fender position more than 2 times, makeed fender position quantity multiplication, can deal with more topography on the one hand, guarantee tractor power maximize, on the other hand has also realized energy saving and emission reduction, result of use.

Description

Double-planet transmission assembly system of tractor

Technical Field

The utility model relates to a mechanical transmission technical field especially relates to a tractor, specifically indicates a tractor double planetary transmission subassembly system.

Background

As is well known, the power system of the existing tractor is derived from an engine, changes speed through a gearbox, and finally outputs power through a power distribution box, and during the speed change process of the gearbox, the power system firstly utilizes the matching of a plurality of gear sets and finally transmits through a planetary gear.

The tractor is a special carrier, the terrain of use of the tractor is the all terrain, along with the continuous change of the application range of the tractor, the tractor manufacturer increases the gear number as much as possible in the manufacturing process, and different gears correspond to different terrain of use, so that the application range of the tractor is wider, but on the comprehensive consideration of manufacturing cost and terrain of use, the gear number of the tractor at present cannot be further expanded, and also because of the thinking limit of technicians in the field, from the market research, no matter which kind of tractor, the transmission system of the tractor of the model, the brand and the like, the manufacturer starts from the gear box when designing and manufacturing gears and changing speed, but the design is the coordination among the gears continuously changed, so that some gears are increased, finally, the power output is transmitted to the power distribution box through a planetary gear transmission, therefore, the maximum gear transmission efficiency cannot be corresponded to the terrain in the process of using the tractor in special terrains.

Disclosure of Invention

The to-be-solved technical problem of the utility model is weak point to prior art exists, a tractor double planetary transmission subassembly system is provided, traditional thinking custom is broken to this transmission system, ensure the inconvenient condition case of gearbox leading gear cooperation, set up two sets of interconnect's planet wheel transmission system in succession, every planet wheel transmission has two gear changes, thereby increased 2 times above fender position, make keep off position quantity multiplication, can deal with more topography on the one hand, guarantee tractor power maximize, on the other hand has also realized energy saving and emission reduction, excellent in use effect.

The technical solution of the utility model is, provide following tractor double planetary transmission subassembly system, planet wheel drive assembly including two sets of drive ratios differences, be first planet wheel drive assembly and second planet wheel drive assembly respectively, engine power changes the back through the gear train transmission in the gearbox, is connected with the power input end of first planet wheel drive assembly, and the power take off end of first planet wheel drive assembly is connected with the power input end of second planet wheel drive assembly, and the power take off end and the power distribution box of second planet wheel drive assembly are connected.

Preferably, the first planetary gear transmission assembly comprises a first power transmission shaft, the right end of the first power transmission shaft is connected with a first planet carrier, the first planet carrier and the first power transmission shaft are in meshing transmission through gears, and the right end of the first power transmission shaft is further provided with first scribing teeth.

Preferably, the second planetary gear transmission assembly comprises a second power transmission shaft, the second power transmission shaft and the first power transmission shaft are coaxially arranged, second scribing teeth with the same nominal diameter, tooth number and modulus are arranged at the right ends of the second power transmission shaft and the first power transmission shaft, and a first sleeve capable of axially moving along the first scribing teeth and the second scribing teeth is sleeved on the second scribing teeth.

Preferably, the first planet carrier right side end face is equipped with the first mounting hole of installation first sleeve and second power transmission shaft, be equipped with the first internal tooth that the annular set up in the first mounting hole, be equipped with the first external tooth with first internal tooth complex on the first sleeve, first external tooth is at first sleeve axial displacement in-process, can realize the meshing and the separation of first internal tooth and first external tooth.

Preferably, the right end of the second power transmission shaft is connected with a second planet carrier, the second planet carrier is meshed with the first power transmission shaft through a gear, and the right end of the second power transmission shaft is further provided with third scribed teeth.

Preferably, the power input shaft of the power distribution box and the second power transmission shaft are coaxially arranged, the right ends of the power input shaft of the power distribution box and the second power transmission shaft are provided with fourth scribing teeth with the same nominal diameter, tooth number and modulus, and the fourth scribing teeth are sleeved with second sleeves capable of axially moving along the third scribing teeth and the fourth scribing teeth.

Preferably, the right end face of the second planet carrier is provided with a second mounting hole for mounting a second sleeve and a power input shaft of the power distribution box, second inner teeth are annularly arranged in the second mounting hole, second outer teeth matched with the second inner teeth are arranged on the second sleeve, and the second outer teeth can realize meshing and separation of the second inner teeth and the second outer teeth in the axial moving process of the second sleeve.

Preferably, the first sleeve and the second sleeve are provided with shifting fork grooves matched with shifting forks to shift the first sleeve and the second sleeve in a reciprocating mode.

Preferably, the first planetary gear transmission assembly and the second planetary gear transmission assembly are arranged in the box body through bearings and a mounting fixing plate.

Preferably, the first sleeve is internally provided with a driving tooth matched with the first scribing tooth and the second scribing tooth, and the second sleeve is internally provided with a driving tooth matched with the third scribing tooth and the fourth scribing tooth.

The beneficial effects of the technical scheme are as follows: this transmission system breaks traditional thinking custom, ensures the inconvenient condition case of gearbox leading gear cooperation, sets up two sets of interconnect's planet wheel transmission system in succession, and every planet wheel transmission has two gear changes to increased the fender position more than 2 times, makeed fender position quantity multiplication, can deal with more topography on the one hand, guarantee tractor power maximize, on the other hand has also realized energy saving and emission reduction, result of use.

Drawings

FIG. 1 is a schematic diagram of a double planetary transmission assembly system of a tractor.

Fig. 2 is a schematic perspective view of fig. 1.

Fig. 3 is a cross-sectional view a-a of fig. 1.

Fig. 4 is an enlarged view of the planetary drive assembly of fig. 3.

Fig. 5 is a cross-sectional view of the sleeve.

Detailed Description

For convenience of explanation, the double planetary transmission assembly system of the tractor will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, a double planetary transmission assembly system of a tractor comprises two groups of planetary transmission assemblies with different transmission ratios, namely a first planetary transmission assembly 1 and a second planetary transmission assembly 2, wherein engine power is transmitted and changed through a gear set 4 in a gearbox 3 and then is connected with a power input end of the first planetary transmission assembly 1, a power output end of the first planetary transmission assembly 1 is connected with a power input end of the second planetary transmission assembly 2, and a power output end of the second planetary transmission assembly 2 is connected with a power distribution box 5; the first planetary gear transmission assembly 1 comprises a first power transmission shaft 1.1, the right end of the first power transmission shaft 1.1 is connected with a first planet carrier 1.2, the first planet carrier 1.2 and the first power transmission shaft 1.1 are in meshing transmission through a gear, and the right end of the first power transmission shaft 1.1 is also provided with a first scribing tooth 1.3; the second planet gear transmission component 2 comprises a second power transmission shaft 2.1, the second power transmission shaft 2.1 and the first power transmission shaft 1.1 are coaxially arranged, second scribing teeth 2.2 with the same nominal diameter, tooth number and modulus are arranged at the right ends of the second power transmission shaft 2.1 and the first power transmission shaft 1.1, and a first sleeve 6 capable of axially moving along the first scribing teeth 1.3 and the second scribing teeth 2.2 is sleeved on the second scribing teeth 2.2; a first mounting hole 1.5 for mounting a first sleeve 6 and a second power transmission shaft 2.1 is formed in the end face of the right side of the first planet carrier 1.2, first inner teeth 1.6 which are annularly arranged are arranged in the first mounting hole 1.5, first outer teeth 6.1 matched with the first inner teeth 1.6 are arranged on the first sleeve 6, and the first outer teeth 6.1 can realize the meshing and separation of the first inner teeth 1.6 and the first outer teeth 6.1 in the axial movement process of the first sleeve 6; the right end of the second power transmission shaft 2.1 is connected with a second planet carrier 2.3, the second planet and the first power transmission shaft 1.1 are transmitted by gear engagement, and the right end of the second power transmission shaft 2.1 is also provided with third scribing teeth 2.4; the power input shaft 5.1 of the power distribution box 5 and the second power transmission shaft 2.1 are coaxially arranged, the right ends of the power input shaft 5.1 of the power distribution box 5 and the second power transmission shaft 2.1 are provided with fourth scribing teeth 5.2 with the same nominal diameter, tooth number and modulus, and the fourth scribing teeth 5.2 are sleeved with a second sleeve 7 capable of axially moving along the third scribing teeth 2.4 and the fourth scribing teeth 5.2; a second mounting hole 2.6 for mounting a second sleeve 7 and a power input shaft 5.1 of the power distribution box 5 is formed in the end face of the right side of the second planet carrier 2.3, second inner teeth 2.7 which are annularly arranged are arranged in the second mounting hole 2.6, second outer teeth 7.1 matched with the second inner teeth 2.7 are arranged on the second sleeve 7, and the second outer teeth 7.1 can realize meshing and separation of the second inner teeth 2.7 and the second outer teeth 7.1 in the axial movement process of the second sleeve 7; the outsides of the first sleeve 6 and the second sleeve 7 are provided with shifting fork grooves 7.3 which are matched with shifting forks to shift the first sleeve 6 and the second sleeve 7 in a reciprocating manner; the first planetary gear transmission assembly 1 and the second planetary gear transmission assembly 2 are arranged in a box body of the gearbox 3 through a bearing 8 and a mounting fixing plate 9; the inside first drive tooth 6.2 that is equipped with first marking tooth 1.3, the cooperation of second marking tooth 2.2 that is equipped with of first sleeve 6, the inside second drive tooth 7.2 that is equipped with the cooperation of third marking tooth 2.4, fourth marking tooth 5.2 that is equipped with of second sleeve 7.

During the use, utilize the shift fork to stir first sleeve and second sleeve respectively, be located the right side as first sleeve, first internal tooth and first external tooth separation state, utilize the meshing of first telescopic first drive tooth and first line tooth and second line tooth, the direct transmission of power of gear train is for second planet wheel drive assembly, first planet wheel assembly idle running this moment, utilize the second external tooth of second sleeve and the second internal tooth cooperation of second planet carrier, planet carrier transmission power, realize the variable speed, and transmit the power after the variable speed for hou mian power distribution box. In a similar way, the left and right matching of the first sleeve and the second sleeve can increase the gear number by 2 times, so that more speed change can be realized by the power output by the engine, and more working environments of the tractor can be met.

In the above embodiments, the best mode of the present invention has been described, it is obvious that many changes can be made under the inventive concept of the present invention, and it should be noted that any changes made under the inventive concept of the present invention will fall within the protective scope of the present invention.

Claims

1. A double-planetary transmission assembly system of a tractor is characterized in that: the planetary gear transmission assembly comprises two groups of planetary gear transmission assemblies with different transmission ratios, namely a first planetary gear transmission assembly (1) and a second planetary gear transmission assembly (2), wherein engine power is transmitted and changed through gear sets (4) with different sizes in a gearbox (3) and then is connected with a power input end of the first planetary gear transmission assembly (1), a power output end of the first planetary gear transmission assembly (1) is connected with a power input end of the second planetary gear transmission assembly (2), and a power output end of the second planetary gear transmission assembly (2) is connected with a power distribution box (5).

2. The tractor double planetary transmission assembly system according to claim 1, wherein: first planet wheel transmission subassembly (1) includes first power transmission axle (1.1), and first power transmission axle (1.1) right-hand member has connect first planet frame (1.2), through gear engagement transmission between first planet frame (1.2) and first power transmission axle (1.1), first power transmission axle (1.1) right-hand member still is equipped with first marking tooth (1.3).

3. The tractor dual planetary transmission assembly system according to claim 2, wherein: second planet wheel drive assembly (2) include second power transmission axle (2.1), second power transmission axle (2.1) and first power transmission axle (1.1) coaxial setting, and second power transmission axle (2.1) and first power transmission axle (1.1) right-hand member are equipped with nominal diameter, the number of teeth, the second that the modulus is the same and draw line tooth (2.2), and the cover is equipped with first sleeve (6) that can draw line tooth (1.3) and second and draw line tooth (2.2) axial displacement on second drawing line tooth (2.2).

4. The tractor dual planetary transmission assembly system according to claim 3, wherein: first planet carrier (1.2) right side terminal surface is equipped with first mounting hole (1.5) of first sleeve of installation (6) and second power transmission axle (2.1), be equipped with first internal tooth (1.6) that the annular set up in first mounting hole (1.5), be equipped with on first sleeve (6) with first internal tooth (1.6) complex first external tooth (6.1), first external tooth (6.1) chi is at first sleeve (6) axial displacement in-process, can realize the meshing and the separation of first internal tooth (1.6) and first external tooth (6.1).

5. The tractor dual planetary transmission assembly system according to claim 4, wherein: the right end of the second power transmission shaft (2.1) is connected with a second planet carrier (2.3), the second planet and the first power transmission shaft (1.1) are transmitted through gear engagement, and the right end of the second power transmission shaft (2.1) is further provided with third scribing teeth (2.4).

6. The tractor dual planetary transmission assembly system according to claim 5, wherein: the power input shaft (5.1) and the second power transmission shaft (2.1) of the power distribution box (5) are coaxially arranged, the right ends of the power input shaft (5.1) and the second power transmission shaft (2.1) of the power distribution box (5) are provided with fourth scribing teeth (5.2) with the same nominal diameter, tooth number and modulus, and the fourth scribing teeth (5.2) are sleeved with a second sleeve (7) capable of axially moving along the third scribing teeth (2.4) and the fourth scribing teeth (5.2).

7. The tractor dual planetary transmission assembly system according to claim 6, wherein: second planet carrier (2.3) right side terminal surface is equipped with second mounting hole (2.6) of power input shaft (5.1) of installation second sleeve (7) and power distribution box (5), be equipped with second internal tooth (2.7) that the annular set up in second mounting hole (2.6), be equipped with on second sleeve (7) with second internal tooth (2.7) complex second external tooth (7.1), second external tooth (7.1) can realize the meshing and the separation of second internal tooth (2.7) and second external tooth (7.1) at second sleeve (7) axial displacement in-process.

8. The tractor dual planetary transmission assembly system according to claim 7, wherein: the outside of the first sleeve (6) and the second sleeve (7) is provided with a shifting fork groove (7.3) which is matched with a shifting fork to shift the first sleeve (6) and the second sleeve (7) in a reciprocating manner.

9. The tractor dual planetary transmission assembly system according to claim 8, wherein: the first planet wheel transmission assembly (1) and the second planet wheel transmission assembly (2) are arranged in a box body of the gearbox (3) through a bearing (8) and a mounting fixing plate (9).

10. The tractor dual planetary transmission assembly system according to claim 7, wherein: first sleeve (6) inside be equipped with first marking tooth (1.3), second marking tooth (2.2) complex first drive tooth (6.2), second sleeve (7) inside be equipped with third marking tooth (2.4), fourth marking tooth (5.2) complex second drive tooth (7.2).