CN219549547U

CN219549547U - Positive and negative rotation transmission mechanism of crawler gearbox

Info

Publication number: CN219549547U
Application number: CN202320126656.2U
Authority: CN
Inventors: 李洪明
Original assignee: Weifang Kunsen Agricultural Equipment Co ltd
Current assignee: Weifang Kunsen Agricultural Equipment Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-08-18
Anticipated expiration: 2033-02-06

Abstract

The utility model discloses a positive and negative rotation transmission mechanism of a crawler gearbox, which comprises a gearbox shell and a first power input shaft, wherein positive rotation transmission gears are respectively arranged on the left side wall and the right side wall in the gearbox shell, a transmission shaft is arranged between the positive rotation transmission gears and the first power input shaft, a first transmission gear meshed with the first input gear and two second transmission gears respectively driving the two positive rotation transmission gears to rotate are arranged on the transmission shaft, a reverse rotation transmission mechanism is arranged between the two positive rotation transmission gears, and differentials matched with the positive rotation transmission gears and the reverse rotation transmission mechanism are arranged on the outer walls of the left side and the right side of the gearbox shell. According to the utility model, the advancing and steering of the crawler is controlled by the first power input shaft and the reversing transmission mechanism respectively, so that the gear engagement of the whole device in the gearbox in the power advancing or reversing process is smoother, the collision damage of the gear is reduced, and the manufacturing cost is lower.

Description

Positive and negative rotation transmission mechanism of crawler gearbox

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to a forward and reverse rotation transmission mechanism of a crawler gearbox.

Background

At present, the crawler can travel on complex terrains such as field mountain areas and the like under all conditions due to the excellent pavement adaptability, and is widely applied to agricultural production. However, the existing rear wheel transmission device of the crawler is usually arranged at the rear part of the gearbox, when the input shaft at the front part of the gearbox is directly controlled to drive or is matched with the output shaft at the rear end of the gearbox to control the output shaft to rotate, the rear wheel transmission device is controlled to move, but when the whole positive and negative rotation transmission device and the output shaft are controlled by a single input shaft, the turning radius of the gearbox of the crawler is too large, the operation is inflexible, meanwhile, the single output structure also makes the transmission structure in the gearbox complex and inconvenient to overhaul, in the steering process, the transmission direction of the whole power needs to be changed, and the high-speed change also causes damage to the internal transmission gear.

Disclosure of Invention

The utility model aims to provide the forward and reverse rotation transmission mechanism of the crawler gearbox, which is convenient to install and can flexibly control the forward and the steering of the crawler by two power driving structures.

The utility model discloses a crawler gearbox forward and backward rotation transmission mechanism, which comprises a gearbox shell and a first power input shaft arranged at the front end of the gearbox shell, wherein a first input gear is arranged on the first power input shaft.

After adopting above-mentioned structure, through the advancing and turning to of first power input shaft and two kinds of power drive structures of reversing drive mechanism control the tracked vehicle respectively, can make the power of whole device in the gearbox advance or the gear engagement in the switching-over process smoother, reduce the gear collision damage, and the setting of differential mechanism cooperatees with reversing drive mechanism and forward transmission gear, more can effectively reasonable utilization gearbox inner space, make the arrangement of gearbox inner device more reasonable effective.

The reversing transmission mechanism comprises a reversing driving shaft which is arranged at the bottom of the gearbox shell along the vertical direction, a second output gear is arranged on the reversing driving shaft, reversing transmission shafts which penetrate through the forward transmission gear along the central axis of the forward transmission gear and extend out of the gearbox shell are arranged on the left side and the right side of the second output gear, and reversing transmission gears meshed with the second output gear are arranged at the inner end parts of the reversing transmission shafts. The reversing transmission mechanism is controlled by an independent driving device, so that gear engagement in the reversing process can be smoother.

The left side wall and the right side wall of the gearbox shell are respectively provided with a shaft sleeve matched with the forward rotation transmission gear, the central axes of the two shaft sleeves are positioned on the same horizontal straight line, and the forward rotation transmission gear is conveniently installed on the left side wall and the right side wall of the gearbox shell by the installation and setting of the shaft sleeves.

The differential mechanism comprises a protective shell fixedly connected to the outer wall of a gearbox shell and a connecting cylinder fixedly connected to the side wall of a forward rotation transmission gear, a positioning frame of a plurality of vertical cylinder walls is arranged in the connecting cylinder, driven gears are arranged at the outer end parts of the positioning frame, a hub driving shaft extending into the connecting cylinder is arranged at the outer end parts of the protective shell, a second hub driving gear meshed with the driven gears is arranged at the end parts of the hub driving shaft, a first hub driving gear meshed with the driven gears is arranged at the outer end parts of a reverse rotation transmission shaft extending into the connecting cylinder and the end parts of the shaft body. The rotation of the hubs can be controlled coaxially through the differential mechanism, and the forward and reverse rotation of the two hubs can be effectively realized.

The hub driving shaft and the central axis of the reversing driving shaft are positioned on the same horizontal straight line, and the hub driving shaft and the central axis of the connecting cylinder are positioned on the same horizontal straight line.

The two forward rotation transmission gears in the gearbox shell are oppositely arranged, and the central axes of the two forward rotation transmission gears are positioned on the same horizontal straight line.

The novel gearbox is characterized in that an L-shaped supporting frame is arranged on the rear side wall in the gearbox shell, the L-shaped supporting frame comprises a vertical plate vertically fixedly connected to the rear side wall along the vertical direction and a transverse plate vertically connected to the other end of the vertical plate and parallel to the rear side wall, a second power input shaft penetrating through the front side wall of the gearbox shell and the transverse plate is arranged above the first power input shaft, a second input gear is arranged at the inner end part of the second power input shaft, a certain limiting supporting effect is achieved through the L-shaped supporting frame, and meanwhile the L-shaped supporting frame is matched with the second power input shaft conveniently, so that a power output shaft is driven.

The rear end of the gearbox shell is provided with a power output shaft, and the power output shaft is provided with a first output gear meshed with a second input gear.

In summary, the beneficial effects of the utility model are as follows: the utility model has convenient installation, and the two power driving structures of the first power input shaft and the reverse transmission mechanism respectively control the advance and the steering of the tracked vehicle, so that the gear engagement of the whole device in the gearbox in the power advance or reversing process is smoother, the collision damage of the gear is reduced, and the arrangement of the differential mechanism is matched with the reverse transmission mechanism and the forward transmission gear, so that the space in the gearbox can be more effectively and reasonably utilized, and the arrangement of the gearbox is more reasonable and effective, and the manufacturing cost is lower.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

fig. 2 is a schematic cross-sectional view of fig. 1 along A-A.

In the figure: 1. a gearbox housing; 2. a first power input shaft; 3. a first input gear; 4. a forward rotation transmission gear; 5. a transmission shaft; 6. a first transmission gear; 7. a second transmission gear; 8. a reversing transmission mechanism; 9. a differential; 10. reversing the drive shaft; 11. a second output gear; 12. reversing the drive shaft; 13. reversing the transmission gear; 14. a shaft sleeve; 15. a connecting cylinder; 16. a positioning frame; 17. a driven gear; 18. a hub drive shaft; 19. a second hub drive gear; 20. a first hub drive gear; 21. an L-shaped supporting frame; 22. a second power input shaft; 23. a second input gear; 24. a power output shaft; 25. a first output gear.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following is a description of preferred embodiments of the utility model, taken in conjunction with the accompanying drawings.

Referring to the drawings, the utility model comprises a gearbox housing 1 and a first power input shaft 2 arranged at the front end of the gearbox housing 1, wherein a first input gear 3 is arranged on the first power input shaft 2, an L-shaped support frame 21 is arranged on the rear side wall in the gearbox housing 1, the L-shaped support frame 21 comprises a vertical plate vertically fixedly connected on the rear side wall along the vertical direction and a transverse plate vertically connected at the other end of the vertical plate and parallel to the rear side wall, a second power input shaft 22 penetrating through the front side wall of the gearbox housing 1 and the transverse plate is arranged above the first power input shaft 2, a second input gear 23 is arranged at the inner end part of the second power input shaft 22, a power output shaft 24 is arranged at the rear end part of the gearbox housing 1, a first output gear 25 meshed with the second input gear 23 is arranged on the power output shaft 24, and the power output shaft 22 can rotate to drive the power output shaft 24.

The transmission device comprises a transmission housing 1, a first power input shaft 2, a second power input shaft 2, a first transmission gear 6 meshed with the first input gear 3, and two second transmission gears 7 respectively driving the two forward transmission gears 4 to rotate, wherein the forward transmission gears 4 are respectively arranged on the left and right side walls in the transmission housing 1, a transmission shaft 5 with two ends respectively installed on the left and right side walls of the transmission housing 1 is arranged between the forward transmission gears 4 and the first power input shaft 2, the first transmission gear 6 meshed with the first input gear 3 and the two second transmission gears 7 respectively driving the two forward transmission gears 4 to rotate are arranged on the transmission shaft 5, when the transmission housing 1 is designed, shaft sleeves 14 matched with the forward transmission gears 4 are respectively installed on the left and right side plates of the transmission housing 1, the central axes of the two shaft sleeves 14 are positioned on the same horizontal straight line, the two ends of the transmission shaft 5 are rotatably connected to the left and right side plates of the transmission housing 1 through mounting seats, and the mounting seats are fixedly connected to the inner wall of the transmission housing 1 in general; during manufacturing, the two second transmission gears 7 are respectively arranged on the shaft bodies, close to the two ends, of the transmission shaft 5 and are respectively meshed with the forward rotation transmission gears 4, and the first transmission gear 6 is arranged at the position, close to the middle, of the transmission shaft 5 and is matched with the first input gear 3, so that the transmission shaft 5 is respectively matched with the first power input shaft 2 to rotate and the two forward rotation transmission gears 4 to drive the two forward rotation transmission gears 4 to rotate by controlling the rotation of the first power input shaft 2.

A reverse transmission mechanism 8 is arranged between the two forward rotation transmission gears 4, the reverse transmission mechanism 8 comprises a reverse driving shaft 10 which is arranged at the bottom of the gearbox housing 1 along the vertical direction, the reverse driving shaft 10 is positioned on the central axis of the two forward rotation transmission gears 4, a second output gear 11 is arranged on the shaft body of the reverse driving shaft 10 close to the bottom, the left side and the right side of the second output gear 11 are provided with reverse transmission shafts 12 which penetrate through the forward rotation transmission gears 4 along the central axis of the forward rotation transmission gears 4 and extend out of the gearbox housing 1, the opposite inner ends of the two reverse transmission shafts 12 are provided with reverse transmission gears 13 which are meshed with the second output gears 11, and when the reverse driving shaft 10 is designed, the reverse driving shaft 10 is usually arranged at one side of the central axis of the gearbox housing 1 along the length direction, so that the upper end of the reverse driving shaft 10 is connected with a hydraulic motor, and the rotation of the reverse driving shaft 10 is controlled by the hydraulic motor so as to control the rotation of the two reverse transmission shafts 12.

The differential mechanism 9 matched with the forward rotation transmission gear 4 and the reverse rotation transmission mechanism 8 is respectively arranged on the outer walls of the left side and the right side of the gearbox housing 1, the differential mechanism 9 comprises a protection housing fixedly connected to the outer wall of the gearbox housing 1 and a connecting cylinder 15 fixedly connected to the side wall of the forward rotation transmission gear 4, the connecting cylinder 15 is cylindrical, the central axis of the connecting cylinder 15 and the central axis of the forward rotation transmission gear 4 are positioned on the same horizontal straight line, a positioning frame 16 with a plurality of vertical cylinder walls is arranged in the connecting cylinder 15, driven gears 17 are arranged at the outer end parts of the positioning frame 16, a hub driving shaft 18 extending into the connecting cylinder 15 is arranged at the outer end parts of the protection housing, a second hub driving gear 19 meshed with the driven gears 17 is arranged at the outer end parts of the hub driving shaft 18, a first hub driving gear 20 meshed with the driven gears 17 is arranged at the end parts of the reversing transmission shaft 12 extending into the connecting cylinder 15, and the central axes of the hub driving shaft 18 and the reversing transmission shaft 12 are positioned on the same horizontal straight line and the same horizontal straight line as the central axis of the connecting cylinder 15, so that when the forward rotation transmission gear 4 and the reversing rotation of the transmission gear 12 are realized.

When the crawler belt is in use, when the crawler belt is in advance, the first power input shaft 2 rotates to enable the transmission shaft 5 to synchronously rotate, so that two forward rotation transmission gears 4 in the gearbox housing 1 are driven to rotate through two second transmission gears 7 on the transmission shaft 5, when the forward rotation transmission gears 4 rotate, the differential mechanism 9 is driven to simultaneously rotate the connecting cylinder 15, and the hub driving shaft 18 is further controlled to rotate through the driven gear 17 in the connecting cylinder 15; when the crawler is required to turn or turn in situ, the reversing driving shaft 10 is controlled to rotate by a hydraulic motor arranged on the cover body above the gearbox housing 1, so that the two reversing driving shafts 12 are driven to rotate in different directions by the second output gear 11 on the reversing driving shaft 10, and when the two reversing driving shafts 12 rotate, the reversing driving shafts 12 extending into the connecting cylinder 15 are matched with the driven gear 17 through the first hub driving gear 20 and rotate by the second hub driving gear 19 to drive the hub driving shaft 18, so that the forward and reverse rotation of the two rear wheels of the crawler are completed.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a crawler gear box positive and negative rotation drive mechanism, includes gearbox casing (1) and first power input shaft (2) that gearbox casing (1) front end set up, be provided with first input gear (3), its characterized in that on first power input shaft (2): the transmission mechanism is characterized in that forward rotation transmission gears (4) are respectively arranged on the left side wall and the right side wall in the transmission housing (1), transmission shafts (5) with two ends respectively arranged on the left side wall and the right side wall of the transmission housing (1) are arranged between the forward rotation transmission gears (4) and the first power input shaft (2), a first transmission gear (6) meshed with the first input gear (3) and two second transmission gears (7) respectively driving the two forward rotation transmission gears (4) to rotate are arranged on the transmission shafts (5), a reverse rotation transmission mechanism (8) is arranged between the two forward rotation transmission gears (4), and differentials (9) matched with the forward rotation transmission gears (4) and the reverse rotation transmission mechanism (8) are respectively arranged on the outer walls of the left side and the right side of the transmission housing (1).

2. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 1, wherein: the reversing transmission mechanism (8) comprises a reversing driving shaft (10) arranged at the bottom of the gearbox housing (1) along the vertical direction, a second output gear (11) is arranged on the reversing driving shaft (10), reversing transmission shafts (12) penetrating through the forward transmission gear (4) along the central axis of the forward transmission gear (4) and extending out of the gearbox housing (1) are arranged on the left side and the right side of the second output gear (11), and reversing transmission gears (13) meshed with the second output gear (11) are arranged at the inner ends of the reversing transmission shafts (12).

3. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 1, wherein: shaft sleeves (14) matched with the forward rotation transmission gear (4) are respectively arranged on the left side wall and the right side wall of the gearbox shell (1), and the central axes of the two shaft sleeves (14) are positioned on the same horizontal straight line.

4. The crawler gearbox forward and reverse drive mechanism of claim 2, wherein: differential mechanism (9) are including rigid coupling protective housing and the connecting cylinder (15) of rigid coupling on the positive transmission gear (4) lateral wall of gear box casing (1), are provided with locating rack (16) of a plurality of perpendicular section of thick bamboo walls in connecting cylinder (15), and the outer tip of locating rack (16) is provided with driven gear (17), and the outer tip of protective housing is provided with hub drive axle (18) that extend into in connecting cylinder (15), the tip of hub drive axle (18) is provided with second hub drive gear (19) that meshes with a plurality of driven gear (17), the outer tip of reversing transmission axle (12) extends into in connecting cylinder (15) and the tip of axis body is provided with first hub drive gear (20) that meshes with a plurality of driven gear (17).

5. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 4, wherein: the hub driving shaft (18) and the central axis of the reversing driving shaft (12) are positioned on the same horizontal straight line, and the hub driving shaft and the central axis of the connecting cylinder (15) are positioned on the same horizontal straight line.

6. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 1, wherein: two forward rotation transmission gears (4) in the gearbox shell (1) are oppositely arranged, and the central axes of the two forward rotation transmission gears (4) are positioned on the same horizontal straight line.

7. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 1, wherein: be provided with L type support frame (21) on the back lateral wall in gearbox housing (1), L type support frame (21) are including vertical board and the perpendicular diaphragm of connecting on the riser other end and being parallel with the back lateral wall on the vertical direction vertical rigid coupling on the back lateral wall, first power input shaft (2) top is provided with second power input shaft (22) that pass gearbox housing (1) front side wall and diaphragm, and the inner tip of second power input shaft (22) is provided with second input gear (23).

8. The crawler gearbox forward and reverse rotation transmission mechanism according to claim 7, wherein: the rear end part of the gearbox housing (1) is provided with a power output shaft (24), and the power output shaft (24) is provided with a first output gear (25) meshed with a second input gear (23).