Planetary multiple steering mechanism

Abstract

The utility model discloses a planet multiple steering mechanism which comprises a gearbox body provided with an output shaft, a planet carrier and a planet wheel, an inner gear ring and an outer gear ring are arranged on the outer wall of the gearbox body, and the inner gear ring and the outer gear ring drive the output shaft to rotate and output torque. A first wet clutch bag capable of locking the planet carrier and the output shaft and a second wet clutch bag capable of fixing the planet carrier are arranged in the gearbox body. The rear end of the gearbox body is provided with a lubricating oil port used for injecting oil into the first wet clutch pack and the second wet clutch pack, a first high-pressure oil hole used for injecting oil into the first piston corresponding to the first wet clutch pack and a second high-pressure oil hole used for injecting oil into the second piston corresponding to the second wet clutch pack. The driving method comprises a two-drive mode, a non-multiple four-drive mode and a multiple four-drive mode and can be used for a tractor gearbox and a tractor steering drive axle, front wheel multiple is provided when a tractor steers, and small-radius steering is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission technical field, concretely relates to a planetary multiple steering mechanism. BACKGROUND

[0002] With the development of domestic agriculture, the requirement of tractor fine operation is higher and higher. The two drive tractors are flexible in steering, have large steering angle, but have insufficient traction; the ordinary four drive tractors have large traction, but the steering is not as good as the two drive tractors, the front and rear wheels of the four drive tractors are fixed linear speed, when turning, because the front wheel turning radius is large and the rear wheel turning radius is small, the linear speed of the front wheel does not match the angular speed, causes the steering resistance, leads to the increase of the turning radius, and because the front wheel drags, the soil is damaged. Especially when working in small plots such as paddy field and high economic crops, a large steering angle is required, when the ordinary four drive tractors turn, the resistance is particularly obvious, the front wheel side pushes the soil to produce the soil piling, and the soil structure at the head of the field is damaged. At the same time, because the resistance increases, the fuel consumption of the tractor increases obviously when turning, which is not conducive to efficient and economic operation. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims at providing a planetary multiple steering mechanism, which can be used in tractor gearbox and tractor steering drive axle, and provides front wheel multiple when the tractor turns, realizes small radius steering.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model provides a planetary multiple steering mechanism, the steering mechanism includes the gearbox body that is equipped with output shaft, planet carrier and planetary gear, the outer wall of gearbox body is equipped with rotatable inner and outer gear ring, the inner and outer gear ring drives the output shaft to rotate and outputs the torque when rotating; the gearbox body is equipped with wet clutch bag one that can lock planet carrier and output shaft and wet clutch bag two that can fix planet carrier, the rear end of gearbox body is opened and has lubricating oil port for injecting oil to wet clutch bag one and wet clutch bag two, high pressure oil hole one for injecting oil to the corresponding piston one in wet clutch bag one and high pressure oil hole two for injecting oil to the corresponding piston two in wet clutch bag two; the driving method includes:

[0006] Two drive mode: the inner and outer gear ring rotates, high pressure oil hole one and high pressure oil hole two do not inject oil, planet carrier and output shaft are in free state, and the output shaft and the inner and outer gear ring can realize free differential;

[0007] Non-multiple four-wheel drive mode: high pressure oil hole two provides high pressure oil to control piston two, piston two pushes wet clutch package two to combine, planet carrier is fixed, the transmission between output shaft and inner and outer gear ring is fixed shaft transmission, inner and outer gear ring input transmits power to planetary gear, planetary gear meshes with output shaft, transmits power to output shaft, realizes normal four-wheel drive output;

[0008] Multiple four-wheel drive mode: high pressure oil hole one provides high pressure oil to control piston one, piston one pushes wet clutch package one to combine, planet carrier is locked with output shaft, the whole planetary transmission system becomes a whole, the speed ratio is 1, the output shaft rotates at high speed, realizes multiple four-wheel drive.

[0009] Preferably, in the gearbox body, the output shaft is supported to rotate by bearing one and bearing six.

[0010] Preferably, in the gearbox body, the planet carrier is supported to rotate by bearing two and bearing five.

[0011] Preferably, in the gearbox body, the inner and outer gear ring is supported to rotate by bearing four and bearing three.

[0012] Preferably, the inner and outer gear ring is internally meshed with the planetary gear; the planetary gear is connected with the planet carrier; and the planetary gear is externally meshed with the output shaft.

[0013] Preferably, the output shaft is internally provided with a first flow channel communicating the high pressure oil hole one and the piston one oil port.

[0014] Preferably, the output shaft is internally provided with a second flow channel communicating the high pressure oil hole two and the piston two oil port.

[0015] The three modes are all realized by using a controller to control a hydraulic proportional valve, and the whole machine can be switched between two-wheel drive and four-wheel drive and between multiple and non-multiple according to requirements.

[0016] The beneficial effects of the utility model lie in:

[0017] The planetary multiple steering mechanism can perfectly solve the problem of large tractor steering angle, and when the front axle steering angle is greater than 40°, the multiple speed steering is automatically started to realize large steering angle U-turn. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 A structural schematic diagram of a planetary gear ratio steering mechanism is provided for the embodiments of the present application.

[0020] Mark explanation:

[0021] 1. Output shaft; 2. Bearing one; 3. Wet clutch package one; 4. Piston one; 5. Planet carrier; 6. Wet clutch package two; 7. Piston two; 8. Lubricating oil hole; 9. High pressure oil hole one; 10. High pressure oil hole two; 11. Bearing two; 12. Bearing three; 13. Inner and outer gear ring; 14. Planetary gear; 15. Bearing four; 16. Bearing five; 17. Bearing six; 18, Second flow channel; 19, First flow channel. Specific implementation

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As Figure 1 shown, a planetary gear ratio steering mechanism, the steering mechanism includes a gearbox body provided with an output shaft 1, a planet carrier 5 and a planetary gear 14, the outer wall of the gearbox body is provided with a rotatable inner and outer gear ring 13, the inner and outer gear ring 13 is driven to rotate when the output shaft 1 rotates and outputs torque; the gearbox body is provided with a wet clutch package one 3 capable of locking the planet carrier 5 and the output shaft 1 and a wet clutch package two 6 capable of fixing the planet carrier 5, the rear end of the gearbox body is provided with a lubricating oil port 8 for injecting oil into the wet clutch package one 3 and the wet clutch package two 6, a high pressure oil hole one 9 for injecting oil into the corresponding piston one 4 of the wet clutch package one 3 and a high pressure oil hole two 10 for injecting oil into the corresponding piston two 7 of the wet clutch package two 6; the driving method comprises:

[0024] Two drive mode: the inner and outer gear ring 13 rotates, the high pressure oil hole one 9 and the high pressure oil hole two 10 do not inject oil, the planet carrier 5 and the output shaft 1 are in a free state, and the output shaft 1 and the inner and outer gear ring 13 can realize free differential;

[0025] Non-multiple four-wheel drive mode: high pressure oil hole two 10 provides high pressure oil to control piston two 7, piston two 7 pushes wet clutch package two 6 to combine, planetary carrier 5 is fixed, the transmission between output shaft 1 and inner and outer gear 13 is fixed shaft transmission, the input of inner and outer gear 13 transmits power to planetary gear 14, planetary gear 14 is engaged with output shaft 1, and power is transmitted to output shaft 1, and normal four-wheel drive output is realized;

[0026] Multiple four-wheel drive mode: high pressure oil hole one 9 provides high pressure oil to control piston one 4, piston one 4 pushes wet clutch package one 3 to combine, planetary carrier 5 is locked with output shaft 1, the entire planetary transmission system becomes a whole, the speed ratio is 1, output shaft 1 rotates at high speed, and multiple four-wheel drive is realized.

[0027] In the gearbox body, the output shaft 1 is supported to rotate by bearing one 2 and bearing six 17.

[0028] In the gearbox body, the planetary carrier 5 is supported to rotate by bearing two 11 and bearing five 16.

[0029] In the gearbox body, the inner and outer gear 13 is supported to rotate by bearing four 15 and bearing three 12.

[0030] The inner and outer gear 13 is engaged with the planetary gear 14; the planetary gear 14 is connected with the planetary carrier 5; and the planetary gear 14 is engaged with the output shaft 1.

[0031] The three modes are all realized by using a controller to control a hydraulic proportional valve, the whole machine can be switched between two-wheel drive and four-wheel drive according to requirements, and can be switched between multiple and non-multiple, after multiple steering is started, the whole machine detects the steering angle of the front axle, and automatically starts and stops the multiple mode.

[0032] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model are within the scope of the claims of the utility model and equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A planetary ratio steering mechanism characterized by, The steering mechanism comprises a gearbox body provided with an output shaft (1), a planet carrier (5) and a planet wheel (14), the outer wall of the gearbox body is provided with a rotatable inner and outer gear ring (13), the inner and outer gear ring (13) drives the output shaft (1) to rotate and outputs torque when rotating; the gearbox body is provided with a wet clutch pack one (3) capable of locking the planet carrier (5) and the output shaft (1) and a wet clutch pack two (6) capable of fixing the planet carrier (5) inside, the rear end of the gearbox body is provided with a lubricating oil port (8) for lubricating the wet clutch pack one (3) and the wet clutch pack two (6), a high-pressure oil hole one (9) for lubricating the corresponding piston one (4) of the wet clutch pack one (3) and a high-pressure oil hole two (10) for lubricating the corresponding piston two (7) of the wet clutch pack two (6).

2. A planetary gear ratio steering mechanism as claimed in claim 1, wherein, The output shaft (1) is provided with a first flow channel (19) communicating the high-pressure oil hole one (9) and the oil port of the piston one (4).

3. A planetary gear ratio steering mechanism as claimed in claim 2, wherein, The output shaft (1) is provided with a second flow channel (18) communicating the high-pressure oil hole two (10) and the oil port of the piston two (7).

4. A planetary gear ratio steering mechanism as claimed in claim 3, wherein In the gearbox body, the output shaft (1) is supported to rotate by bearing one (2) and bearing six (17).

5. A planetary gear ratio steering mechanism as claimed in claim 4, wherein, In the gearbox body, the planet carrier (5) is supported to rotate by bearing two (11) and bearing five (16).

6. A planetary ratio steering mechanism as claimed in claim 5, wherein, In the gearbox body, the inner and outer gear ring (13) is supported to rotate by bearing four (15) and bearing three (12).

7. A planetary gear ratio steering mechanism as claimed in claim 6, wherein The inner and outer gear ring (13) is meshed with the planet wheel (14); the planet wheel (14) is connected with the planet carrier (5); and the planet wheel (14) is meshed with the output shaft (1).

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