CN210118423U

CN210118423U - Gearbox and vehicle

Info

Publication number: CN210118423U
Application number: CN201822129747.3U
Authority: CN
Inventors: 周志; 陈震霖; 肖名涛
Original assignee: Changsha Sanglaite Agricultural Mechanical Equipment Co Ltd
Current assignee: Changsha Sanglaite Agricultural Mechanical Equipment Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-02-28
Anticipated expiration: 2028-12-18

Abstract

The utility model provides a gearbox and vehicle, the gearbox includes the box, be equipped with primary shaft and secondary shaft in the box, primary shaft and secondary shaft parallel arrangement, low-speed transmission tooth, fourth gear drive tooth, third gear drive tooth, second gear drive tooth and first gear drive tooth have set gradually on the primary shaft, low-speed transmission tooth pass through the bearing set up in on the primary shaft, fourth gear drive tooth, third gear drive tooth, second gear drive tooth and first gear drive tooth are fixed to be set up on the primary shaft; a fourth gear driven tooth, a third gear driven tooth, a second gear driven tooth and a first gear driven tooth are sequentially arranged on the second shaft, and the fourth gear driven tooth, the third gear driven tooth, the second gear driven tooth and the first gear driven tooth are in clearance fit with the second shaft; the box still is equipped with differential mechanism assembly in, one side of differential mechanism assembly still is equipped with the locking mechanical system that can separate or combine with differential mechanism assembly, locking mechanical system with when the differential mechanism assembly combines, the differential function of differential mechanism assembly is invalid.

Description

Gearbox and vehicle

Technical Field

The utility model relates to a gearbox field, in particular to gearbox and vehicle.

Background

Various agricultural machines are mainly used for operation and transportation in mountainous areas and places with relatively poor road conditions, at present, the most widely used agricultural machines such as tractors mainly comprise a universal gearbox, the gearbox has relatively single function, and the function is mainly to transmit power. When the road conditions or working conditions of the operation are poor, the use requirements are often difficult to meet.

In order to improve the power of the gearbox, a method of adding a secondary gearbox or a front-drive transfer case and a rear-drive transfer case is generally adopted, and then after various devices are superposed, the overall size of the gearbox is large, the use cost is correspondingly higher, the stability and the reliability of the gearbox are reduced along with the reduction, and the failure rate is correspondingly higher.

Therefore, how to provide a transmission with compact structure, good reliability and stability, and low production and use cost, and a vehicle comprising the transmission, has become a technical problem which needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a transmission with compact structure, good reliability and stability, and low production and use cost, and a vehicle comprising the transmission are provided.

The utility model discloses a solution is realized like this: the utility model provides a gearbox, the power distribution box comprises a box body, be equipped with primary shaft and secondary shaft in the box, primary shaft and secondary shaft parallel arrangement, low-speed transmission tooth, fourth gear drive tooth, third gear drive tooth, second gear drive tooth and first gear drive tooth have set gradually on the primary shaft, low-speed transmission tooth sets up in on the primary shaft through the bearing, fourth gear drive tooth, third gear drive tooth, second gear drive tooth and first gear drive tooth are fixed to be set up on the primary shaft; the second shaft is sequentially provided with a fourth-gear driven tooth, a third-gear driven tooth, a second-gear driven tooth and a first-gear driven tooth, and the fourth-gear driven tooth, the third-gear driven tooth, the second-gear driven tooth and the first-gear driven tooth are all sleeved on the second shaft through bearings; the box still is equipped with differential mechanism assembly in, one side of differential mechanism assembly still is equipped with the locking mechanical system that can separate or combine with differential mechanism assembly, locking mechanical system with when the differential mechanism assembly combines, the differential function of differential mechanism assembly is invalid. The transmission with the structure can be used on various agricultural vehicles, when one wheel slips, the differential assembly can be locked through operation, the rotating speed of the differential assembly is consistent with that of the other wheel, and therefore two wheels are driven simultaneously. Compared with the gear box with the existing structure, the gear box with the structure is more compact, better in reliability and stability and lower in production and use cost.

Another technical solution of the present invention is that on the basis of the above, the second shaft is further provided with a first engaging sleeve and a second engaging sleeve, the first engaging sleeve is provided with a first spline tooth engaged with the first engaging sleeve, and the second engaging sleeve is provided with a second spline tooth engaged with the second engaging sleeve; the fourth gear driving tooth, the third gear driving tooth, the second gear driving tooth and the first gear driving tooth are respectively meshed with the fourth gear driven tooth, the third gear driven tooth, the second gear driven tooth and the first gear driven tooth.

On the basis, the other technical scheme of the utility model is that a rear drive shaft and a front drive shaft arranged at one end of the rear drive shaft are also arranged in the box body, and the end parts of the rear drive shaft and the front drive shaft are also provided with split teeth for jointing or separating; the front driving shaft is also provided with a driving tooth and a tail end transmission tooth arranged on one side of the driving tooth; and a third joint sleeve used for being meshed with the tail end transmission gear is further arranged on the second shaft, and a low-speed fixed gear is further arranged on one side of the third joint sleeve.

The utility model discloses an another technical scheme lies in on above-mentioned basis, differential mechanism assembly set up in the front-wheel drive axle is kept away from the one end tip of rear-wheel drive axle, the rear-wheel drive axle with the tip of front-wheel drive axle still is equipped with the deciliter tooth that plays joint or separating action.

Another technical solution of the present invention is that, on the basis of the above, the differential assembly includes a differential case and a planet axle disposed in the differential case, the planet axle is provided with a planet gear, and two sides of the planet axle are respectively provided with a first half axle and a second half axle; the axes of the first half shaft and the second half shaft are overlapped and are perpendicular to the axis of the planet shaft, a first half shaft gear is arranged on the first half shaft, and a second half shaft gear is arranged on the second half shaft.

The utility model discloses a another technical scheme lies in on the basis of above-mentioned, the first end of planet axle is equipped with first planetary gear, the second end of planet axle is equipped with second planetary gear, first planetary gear and second planet tooth are the toper tooth, just first planetary gear meshes with first half axle gear and second half axle gear respectively, second planet tooth meshes with first half axle gear and second half axle gear respectively.

Another technical scheme of the utility model lies in on the basis of above-mentioned, locking mechanism is including movably setting up the locking round pin on the differential mechanism shell, the locking round pin is on a parallel with first semi-axis and second semi-axis, be equipped with on first semi-axis gear and/or the second semi-axis gear with locking round pin complex locking hole.

The utility model discloses an another technical scheme lies in on above-mentioned basis, the one end of lock pin is the fixed locking shifting block that is provided with still, when the locking shifting block removed, drive the lock pin removes, realizes the locking to first semi-axis and second semi-axis or unclamps.

The utility model discloses an another technical scheme lies in on above-mentioned basis, still be equipped with first control rod on the differential mechanism shell, the one end of first control rod is arranged in the locking shifting block, during the operation of first control rod, its tip drives the locking shifting block removes.

On the other hand, the utility model also provides a vehicle, including the gearbox, the gearbox is as above the gearbox.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.

Fig. 1 is a schematic structural view of a transmission according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic cross-sectional view of C-C of FIG. 1.

The corresponding relation of the reference signs is as follows:

1 clutch shaft 2 connecting sleeve 3 first shaft

4 low-speed transmission teeth, 5 four-gear driving teeth, 51 four-gear driven teeth

6 third gear driving tooth 61, third gear driven tooth 7 and second gear driving tooth

71 second-gear driven tooth 8 first-gear driving tooth 81 first-gear driven tooth

9 power output flange 10 rear drive flange 11 rear drive shaft

12 first engaging sleeve 121 first spline tooth 13 engaging sleeve

14 second engaging sleeve 141 second spline teeth 15 driving teeth

16 end gearing 17 high speed fixed teeth 18 third engaging sleeve

19 low-speed fixed teeth 20 and second shaft 21 driven bevel gear

22 drive bevel gear 23 differential carrier 24 first lever

25 second joystick 26 third joystick 27 front drive shaft

28 first semi-axis gear 29 first planetary gear 30 planetary axis

31 second side gear 32 locking pin 33 locking shifting block

34 first half shaft 35 second half shaft 36 second planetary gear

37 fork 38 return spring

Detailed Description

The present invention will be described in detail with reference to the drawings, which are provided for illustrative and explanatory purposes only and should not be construed as limiting the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

The embodiment of the present invention is as follows, please refer to the transmission and its components shown in fig. 1 to 4, the transmission specifically includes a box body, as shown in fig. 1, a first shaft 3 and a second shaft 20 are arranged in the box body, the first shaft 3 and the second shaft 20 are arranged in parallel, a low-speed transmission tooth 4, a fourth-gear driving tooth 5, a third-gear driving tooth 6, a second-gear driving tooth 7 and a first-gear driving tooth 8 are sequentially arranged on the first shaft 3 from left to right, the low-speed transmission tooth 4 is sleeved on the first shaft 3 through a bearing, namely, when the first shaft 3 rotates, the low-speed transmission teeth 4 do not rotate, the fourth-gear driving teeth 5, the third-gear driving teeth 6, the second-gear driving teeth 7 and the first-gear driving teeth 8 are fixedly arranged on the first shaft 3, when the first shaft 3 rotates, the fourth-gear driving tooth 5, the third-gear driving tooth 6, the second-gear driving tooth 7 and the first-gear driving tooth 8 always rotate together with them. The fourth gear driven tooth 51, the third gear driven tooth 61, the second gear driven tooth 71 and the first gear driven tooth 81 are arranged on the second shaft 20 from left to right in sequence, and the fourth gear driven tooth 51, the third gear driven tooth 61, the second gear driven tooth 71 and the first gear driven tooth 81 are all freely sleeved on the second shaft 20 through shaft sleeves, namely when the second shaft 20 rotates, the fourth gear driven tooth 51, the third gear driven tooth 61, the second gear driven tooth 71 and the first gear driven tooth 81 do not rotate along with one another. A differential assembly is further arranged in the box body, a locking mechanism is further arranged on one side of the differential assembly, the locking mechanism can enable the differential assembly to be separated from or combined with the differential assembly, locking and unlocking of the differential assembly are achieved, when the differential assembly is locked, the differential function of the differential assembly is invalid, and at the moment, wheels on two sides of the differential assembly can synchronously rotate without differential. The transmission with the structure can be used on various agricultural vehicles, when one wheel slips, the differential assembly can be locked through operation, the rotating speed of the differential assembly is consistent with that of the other wheel, and therefore two wheels are driven simultaneously. Compared with the gear box with the existing structure, the gear box with the structure is more compact, better in reliability and stability and lower in production and use cost.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to fig. 4, the second shaft 20 is further provided with a first engaging sleeve 12 and a second engaging sleeve 14, the first engaging sleeve 12 and the second engaging sleeve 14 are respectively disposed on the second shaft 20 in a spline manner, the first engaging sleeve 12 is further provided with a first spline tooth 121 which is always engaged with the first engaging sleeve, and similarly, the second engaging sleeve 14 is further provided with a second spline tooth 141 which is always engaged with the second engaging sleeve. The fourth-gear driving tooth 5, the third-gear driving tooth 6, the second-gear driving tooth 7 and the first-gear driving tooth 8 are engaged with the fourth-gear driven tooth 51, the third-gear driven tooth 61, the second-gear driven tooth 71 and the first-gear driven tooth 81, respectively.

On the basis of the above embodiment, in another embodiment of the utility model, as shown in fig. 1 to fig. 4, still be equipped with the back-drive axle 11 in the box, back-drive axle 11 and primary shaft 3 and secondary shaft 20 parallel arrangement, the one end of back-drive axle 11, the left end shown in fig. 1 still is equipped with the front-drive axle 27 promptly, back-drive axle 11 still is equipped with combination cover 13 with the tip of front-drive axle 27, through combination cover 13, can link together front-drive axle 27 and back-drive axle 11, make it become four-wheel drive type gear box or two-wheel drive type gear box. The end of the front drive shaft 27 close to the rear drive shaft 11 is also provided with a drive tooth 15, one side of the drive tooth 15 is also provided with a tail end transmission tooth 16, and the tail end transmission tooth 16 is arranged on the left side of the drive tooth 15. A third engagement sleeve 18 for engagement with the end gear 16 is also provided on the second shaft 20, and a low speed fixed tooth 19 is also provided on one side of the third engagement sleeve 18, i.e., the left side as viewed in the drawing.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the differential assembly is provided with a front driving shaft 27, which is away from one end of the rear driving shaft 11, i.e. the left end shown in the drawing, the front driving shaft 27 is close to one end of the differential assembly, i.e. the left end shown in the drawing is further provided with a driving bevel gear 22, and the driving bevel gear 22 is used for providing power for the differential assembly.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 to fig. 4, the differential assembly includes a differential case 23 and a planetary shaft 30 disposed in the differential case 23, the planetary shaft 30 is provided with a plurality of planet gears, two sides of the planetary shaft 30 are further provided with a first half shaft 34 and a second half shaft 35, respectively, and one end of the first half shaft 34 and one end of the second half shaft 35 are provided with a wheel, such as a left front wheel and a right front wheel, respectively. The axes of the first half shaft 34 and the second half shaft 35 are coincident, the axes of the first half shaft 34 and the second half shaft 35 are perpendicular to the axis of the planet shaft 30, the first half shaft 34 is further provided with a first half shaft gear 28, and the second half shaft 35 is further provided with a second half shaft gear 31. In addition, the differential assembly includes a driven bevel gear 21 for engagement of a drive bevel gear 22.

In addition to the above-mentioned embodiments, in another embodiment of the present invention, as shown in fig. 1 to 4, the first end of the planetary shaft 30, i.e. the left end shown in fig. 2, is further provided with the first planet gears 29, the second end of the planetary shaft 30, i.e. the right end shown in fig. 2, is further provided with the second planet gears 36, the first planet gears 29 and the second planet gears 36 are both conical teeth, the first planet gears 29 are respectively engaged with the first side gear 28 and the second side gear 31, and the second planet gears 36 are respectively engaged with the first side gear 28 and the second side gear 31.

In another embodiment of the present invention, as shown in fig. 2, the locking mechanism specifically includes a locking pin 32, the locking pin 32 is movably disposed on the differential case 23, the locking pin 32 is disposed in parallel with the first axle 34 and the second axle 35, a locking hole for cooperating with the locking pin 32 is disposed on the first axle gear 28 or the second axle gear 31, or both the first axle gear 28 and the second axle gear 31, and when the locking pin 32 moves to a predetermined position, one end of the locking pin 32 can be inserted into the locking hole.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 2, the locking mechanism further includes a pin stop shifting block, the locking shifting block 33 is disposed at one end of the pin stop, and when the pin stop shifting block moves, the locking pin 32 is driven to move, so as to lock and separate the first half shaft 34 and the second half shaft 35. Specifically, when the lock pin 32 is inserted into the lock hole, the first half shaft 34 and the second half shaft 35 are locked, and at this time, the first half shaft 34 and the second half shaft 35 rotate synchronously, that is, the same-speed driving at two wheels is realized. And when the lock pin 32 is pulled out of the lock hole, the first axle shaft 34 and the second axle shaft 35 rotate differentially.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 3 and 4, the differential case 23 is further provided with a first operating lever 24, one end of the first operating lever 24 is disposed in the locking shifting block 33, and when the first operating lever 24 is operated, the end portion thereof drives the locking shifting block 33 to move.

Furthermore, as shown in fig. 1 to 4, the gearbox further comprises a clutch shaft 1 for powering the first shaft 3, the clutch shaft 1 being arranged at the left end of the first shaft 3 and being connected to the first shaft 3 by a connecting sleeve 2. The gearbox body is also provided with a second operating lever 25 and a third operating lever 26, the second operating lever 25 is used for switching among a first gear, a second gear, a third gear and a fourth gear of the gearbox, and the third operating lever 26 is used for switching among a high gear and a low gear. The right end of the first shaft 3 is also provided with a power output flange 9, and the right end of the rear drive shaft 11 is also provided with a rear drive flange 10. The first operating lever 24 is further provided with a return spring 38, and one end thereof is further provided with a shift fork 37.

The working principle of the gearbox is as follows:

when the second engaging sleeve 14 slides leftward, the conjoined gear ring on the fourth-speed driven gear 51 meshes with the second engaging sleeve 14, transmitting torque to the second engaging sleeve 14 and, at the same time, to the second spline teeth 141, thereby transmitting torque to the second shaft 20. At this time, the high-speed fixed gear 17 is connected to the second shaft 20 by a spline, and thus obtains torque and completes output. When the third engaging sleeve 18 slides to the right, the combined ring gear on the fourth-gear driven gear 51 is meshed with the second engaging sleeve 14, and the torque of the high-speed fixed teeth 17 is received and transmitted to the end transmission teeth 16, so that high-speed transmission is realized. When the third engaging sleeve 18 slides leftward, the engaging ring gear of the fourth-speed driven gear 51 engages with the second engaging sleeve 14, and torque is transmitted to the low-speed transmission teeth 4 through the high-speed fixing teeth 17, transmitted to the low-speed fixing teeth 19 through the low-speed transmission teeth 4, and transmitted to the final transmission teeth 16 through the third engaging sleeve 18, thereby realizing low-speed transmission.

The gearbox with the structure has the advantages that:

1. by adopting a main-auxiliary speed change combined structure, 8-speed forward and 4-speed reverse can be realized, and the device is suitable for complex operation environments.

2. The double-stage main speed reduction device adopting the combination of the cylindrical gear and the bevel gear has the advantages of compact structure and large transmission ratio, and is suitable for vehicles running at low speed.

3. Has two modes of independent front driving and four-driving, and is particularly suitable for the articulated vehicle.

4. The power output device has the power output which rotates in the same direction as the engine at the same speed, and is convenient for being externally connected with a power transmission device.

5. The differential locking device is directly arranged on the differential case and the half axle gear, so that the rotating speed of the driving wheel is consistent, the passing performance of the driving wheel is better, the structure is simple, and the control is convenient.

On the other hand, the utility model also provides a vehicle, including the gearbox, the gearbox specifically is as above the gearbox.

The vehicle with the structure has the advantages of good road trafficability, low use cost, and good reliability and stability.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A gearbox is characterized by comprising a box body, wherein a first shaft and a second shaft are arranged in the box body, the first shaft and the second shaft are arranged in parallel, a low-speed transmission tooth, a fourth-gear driving tooth, a third-gear driving tooth, a second-gear driving tooth and a first-gear driving tooth are sequentially arranged on the first shaft, the low-speed transmission tooth is arranged on the first shaft through a bearing, and the fourth-gear driving tooth, the third-gear driving tooth, the second-gear driving tooth and the first-gear driving tooth are fixedly arranged on the first shaft;

the second shaft is sequentially provided with a fourth-gear driven tooth, a third-gear driven tooth, a second-gear driven tooth and a first-gear driven tooth, and the fourth-gear driven tooth, the third-gear driven tooth, the second-gear driven tooth and the first-gear driven tooth are all sleeved on the second shaft through bearings;

the box still is equipped with differential mechanism assembly in, one side of differential mechanism assembly still is equipped with the locking mechanical system that can separate or combine with differential mechanism assembly, locking mechanical system with when the differential mechanism assembly combines, the differential function of differential mechanism assembly is invalid.

2. The transmission of claim 1, wherein said second shaft further defines a first engagement sleeve and a second engagement sleeve, said first engagement sleeve defining first spline teeth for engagement therewith, said second engagement sleeve defining second spline teeth for engagement therewith;

the fourth gear driving tooth, the third gear driving tooth, the second gear driving tooth and the first gear driving tooth are respectively meshed with the fourth gear driven tooth, the third gear driven tooth, the second gear driven tooth and the first gear driven tooth.

3. The gearbox according to claim 2, characterized in that a rear drive shaft and a front drive shaft arranged at one end of the rear drive shaft are further arranged in the box body, and the ends of the rear drive shaft and the front drive shaft are further provided with engaging and disengaging teeth for engaging or disengaging;

the front driving shaft is also provided with a driving tooth and a tail end transmission tooth arranged on one side of the driving tooth;

and a third joint sleeve used for being meshed with the tail end transmission gear is further arranged on the second shaft, and a low-speed fixed gear is further arranged on one side of the third joint sleeve.

4. The transmission of claim 3, wherein the differential assembly is disposed at an end of the front drive shaft away from the rear drive shaft, and a drive bevel gear is disposed at an end of the front drive shaft close to the differential assembly.

5. The transmission of claim 4, wherein the differential assembly includes a differential case and a planetary shaft disposed in the differential case, the planetary shaft having a planetary gear thereon, the planetary shaft having a first axle shaft and a second axle shaft disposed on opposite sides thereof, respectively;

the axes of the first half shaft and the second half shaft are overlapped and are perpendicular to the axis of the planet shaft, a first half shaft gear is arranged on the first half shaft, and a second half shaft gear is arranged on the second half shaft.

6. A gearbox according to claim 5, characterised in that the first end of the planet shaft is provided with first planet gears and the second end of the planet shaft is provided with second planet gears, the first planet gears and the second planet gears being conical teeth, and the first planet gears meshing with the first side gear and the second side gear respectively and the second planet gears meshing with the first side gear and the second side gear respectively.

7. A transmission according to claim 6 wherein the locking mechanism comprises a locking pin movably disposed on the differential case, the locking pin being parallel to the first and second axle shafts, the first and/or second axle gears being provided with locking apertures for engagement with the locking pin.

8. The gearbox of claim 7, wherein a locking shifting block is fixedly arranged at one end of the locking pin, and when the locking shifting block moves, the locking pin is driven to move, so that the first half shaft and the second half shaft are locked or released.

9. The transmission of claim 8, wherein the differential case further comprises a first operating lever, one end of the first operating lever is disposed in the lock-up dial, and when the first operating lever is operated, the end of the first operating lever drives the lock-up dial to move.

10. A vehicle comprising a gearbox, characterized in that the gearbox is a gearbox according to any one of claims 1 to 9.