CN218063258U

CN218063258U - Leading speed change mechanism of gearbox

Info

Publication number: CN218063258U
Application number: CN202222312194.1U
Authority: CN
Inventors: 颜灵永
Original assignee: Zhejiang Sanhuan Gear Co ltd
Current assignee: Zhejiang Sanhuan Gear Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-16
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a leading speed change mechanism of gearbox belongs to automotive filed. The gearbox solves the problems that the structure of the existing gearbox is complex and the tooth part of the speed change gear is abraded greatly. This leading speed change mechanism of gearbox, including the gearbox body and be located the gearbox body and be used for the speed change mechanism that the variable speed was adjusted, be located speed change mechanism one end and rather than the shifting fork mechanism that is connected, transmission shaft and intermediate shaft have set gradually in the speed change mechanism, it is equipped with a plurality of and is cylindric structure setting and be used for variable speed drive's change gear and variable speed ring gear to be located to overlap in proper order on the transmission shaft, be provided with a plurality of meshing subassembly on the transmission shaft, change gear and meshing subassembly all are located corresponding meshing subassembly both sides, the cover is equipped with a plurality of and corresponding change gear meshing driven cylindrical gear on the intermediate shaft, and it all is provided with drive bearing to be located intermediate shaft and transmission shaft both ends. The utility model has the advantages of structural design is reasonable, the dependable performance is just with low costs.

Description

Leading speed change mechanism of gearbox

Technical Field

The utility model belongs to the automobile field relates to a gearbox, in particular to leading speed change mechanism of gearbox.

Background

When the engine is applied to an automobile, the speed needs to be adjusted by using the transmission to drive the automobile to run, the transmission is arranged between the engine and a rear axle, so that the automobile plays roles of reducing speed, increasing torque and adjusting high and low gears when being started, and the conventional transmission is mainly divided into a manual transmission and an automatic transmission.

With the continuous progress and development of society, large trucks and heavy trucks are widely applied, because the number of gearboxes capable of being matched with the large trucks and the heavy trucks is relatively small, the series structures of the gearboxes matched with the large trucks and the heavy trucks in the market are complex, the speed change and gear shift synchronization effect is poor, the gears at the meshing positions of the gearboxes are abraded greatly, the popularization of the large trucks and the heavy trucks in the market is greatly restricted, and the gearboxes matched with the large trucks and the heavy trucks need to be researched and developed urgently.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a leading speed change mechanism of gearbox suitable for on large truck and the heavy load truck, solve above problem.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a leading speed change mechanism of gearbox, includes the gearbox casing and is located the gearbox casing and be used for the speed change mechanism that variable speed was adjusted, its characterized in that is located speed change mechanism one end and the fork mechanism that pulls out rather than being connected, speed change mechanism in set gradually transmission shaft and countershaft, be located the transmission shaft on overlap in proper order and be equipped with a plurality of and be cylindric structure setting and be used for speed change drive's change gear and variable speed ring gear, the transmission shaft on be provided with a plurality of meshing subassembly, change gear and meshing subassembly all be located corresponding meshing subassembly both sides, the jackshaft on overlap and be equipped with a plurality of and corresponding change gear meshing driven cylindrical gear, and be located jackshaft and transmission shaft both ends all be provided with drive bearing.

In foretell leading speed change mechanism of gearbox, be located change gear one end set up the oil storage annular that supplies lubricating grease to deposit, be located oil storage annular in seted up the oilhole that a plurality of liquid lubricating grease circulated, just oilhole and change gear periphery wall meshing department be linked together.

In the above-mentioned front speed change mechanism of the transmission, the meshing assembly is composed of a meshing sleeve and a matching gear matched with the meshing sleeve and sleeved on the transmission shaft, an inner tooth portion matched with the ring tooth portion of the speed change gear is arranged on the inner wall of the meshing sleeve, and an installation portion for matching and installing the matching gear is further arranged on the transmission shaft.

In the front speed change mechanism of the gearbox, a gear shift mechanism for gear shifting and speed changing is arranged on the gearbox body, the gear shift mechanism consists of a gear shift cover fixedly connected with the gearbox body, a gear shift shaft, a gear shift piece arranged on the gear shift shaft and used for speed changing and gear shifting, and a handle arranged at one end of the gear shift shaft and used for controlling the work of the gear shift piece, and an auxiliary unit convenient for gear shifting and speed changing is also arranged in the gear shift cover.

In the preposed speed change mechanism of the gearbox, the outer peripheral walls at the two ends of the transmission shaft are provided with meshing tooth parts convenient for meshing transmission, and the meshing tooth parts and the transmission shaft are arranged in an integrated structure.

Compared with the prior art, the front speed change mechanism of the gearbox has the advantages of reasonable structural design, reliable performance, low cost and smooth gear shifting, is simultaneously positioned at one end of the speed change gear, is provided with the oil storage ring groove and positioned at the bottom of the oil storage ring groove and communicated with the meshing part of the speed change gear, and effectively realizes lubrication of the meshing part of the speed change gear.

Drawings

Fig. 1 is a schematic perspective view of a front transmission mechanism of the transmission.

Fig. 2 is a schematic view of the internal structure of the front derailleur of the present transmission.

Fig. 3 is a schematic perspective view of the engaging component of the front derailleur of the present invention.

Fig. 4 is a schematic diagram of a half-section structure of a speed change gear of the front speed change mechanism of the gearbox.

Fig. 5 is a schematic perspective view of a gear shifting mechanism of the front gear shifting mechanism of the gearbox.

In the figure, 1, a transmission case; 2. a drive shaft; 3. an intermediate shaft; 4. a speed change gear; 5. a shift ring gear; 6. a cylindrical gear; 7. a drive bearing; 8. an oil storage ring groove; 9. an oil hole; 10. an engagement sleeve; 11. a mating gear; 12. an inner tooth portion; 13. a gear shifting cover; 14. a shift shaft; 15. a handle; 16. an auxiliary unit; 17. engaging the tooth portion; 18. an engagement assembly; 19. a gear shift mechanism; 20. and replacing the stopper.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 shows, this leading speed change mechanism of gearbox, including gearbox 1 and the speed change mechanism who is located gearbox 1 and is used for the variable speed to adjust, be located speed change mechanism one end and rather than the fork mechanism that pulls out that is connected, transmission shaft 2 and countershaft 3 have set gradually in the speed change mechanism, it is equipped with a plurality of and is cylindric structure setting and be used for variable speed drive's change gear 4 and variable speed ring gear 5 to be located to overlap in proper order on transmission shaft 2, be provided with a plurality of meshing subassembly 18 on the transmission shaft 2, change gear 4 and meshing subassembly 18 all are located corresponding meshing subassembly 18 both sides, the cover is equipped with a plurality of and corresponding change gear 4 meshing driven cylindrical gear 6 on the countershaft 3, and it all is provided with drive bearing 7 to be located jackshaft 3 and transmission shaft 2 both ends.

In more detail, an oil storage ring groove 8 for storing lubricating grease is formed in one end of the speed change gear 4, a plurality of oil holes 9 through which liquid lubricating grease flows are formed in the oil storage ring groove 8, and the oil holes 9 are communicated with the meshing part of the outer peripheral wall of the speed change gear 4.

In more detail, the meshing assembly 18 is composed of a meshing sleeve 10 and a matching gear 11 matched with the meshing sleeve 10 and sleeved on the transmission shaft 2, an inner tooth portion 12 matched with the tooth portion of the speed change gear ring 5 is arranged on the inner wall of the meshing sleeve 10, and an installation portion for matching and installing the matching gear 11 is further arranged on the transmission shaft 2.

In more detail, a shifting mechanism 19 for shifting gears is disposed on the transmission case 1, the shifting mechanism 19 is composed of a shifting cover 13 fixedly connected with the transmission case 1, a shifting shaft 14, a shifting member 20 for shifting gears and for shifting gears, and a handle 15 disposed at one end of the shifting shaft 14 and for controlling the operation of the shifting member 20, and an auxiliary unit 16 for facilitating shifting gears is disposed in the shifting cover 13.

In a further elaboration, the outer peripheral walls of the two ends of the transmission shaft 2 are provided with meshing tooth portions 17 which are convenient for meshing transmission, and the meshing tooth portions 17 and the transmission shaft 2 are arranged in an integrated structure.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the transmission case 1, the transmission shaft 2, the intermediate shaft 3, the transmission gear 4, the transmission ring gear 5, the spur gear 6, the transmission bearing 7, the oil reservoir ring groove 8, the oil hole 9, the meshing sleeve 10, the mating gear 11, the internal tooth portion 12, the shift cover 13, the shift shaft 14, the handle 15, the auxiliary unit 16, the meshing tooth portion 17, the meshing assembly 18, the shift mechanism 19, the shift element 20, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a leading speed change mechanism of gearbox, includes gearbox body (1) and is located gearbox body (1) and is used for the speed change to adjust's speed change mechanism, its characterized in that is located speed change mechanism one end and the fork mechanism that pulls out rather than being connected, speed change mechanism in set gradually transmission shaft (2) and countershaft (3), be located transmission shaft (2) on overlap in proper order and be equipped with a plurality of and be cylindric structure setting and be used for speed change driven change gear (4) and variable speed ring gear (5), transmission shaft (2) on be provided with a plurality of meshing subassembly (18), change gear (4) and meshing subassembly (18) all be located corresponding meshing subassembly (18) both sides, countershaft (3) on the cover be equipped with a plurality of with corresponding change gear (4) meshing driven cylindrical gear (6), and be located both ends of countershaft (3) and transmission shaft (2) all be provided with transmission bearing (7).

2. The front-mounted transmission mechanism of the gearbox according to claim 1, wherein an oil storage ring groove (8) for storing lubricating grease is formed in one end of the transmission gear (4), a plurality of oil holes (9) for allowing liquid lubricating grease to flow are formed in the oil storage ring groove (8), and the oil holes (9) are communicated with the meshing part of the outer peripheral wall of the transmission gear (4).

3. The front speed change mechanism of the gearbox according to claim 1, wherein the meshing assembly (18) consists of a meshing sleeve (10) and a matching gear (11) which is matched with the meshing sleeve (10) and sleeved on the transmission shaft (2), an inner tooth part (12) matched with the tooth part of the speed change gear ring (5) is arranged on the inner wall of the meshing sleeve (10), and a mounting part for matching and mounting the matching gear (11) is further arranged on the transmission shaft (2).

4. A front-end gearbox gearing mechanism according to claim 1, characterized in that said gearbox casing (1) is provided with a shifting mechanism (19) for shifting gears, said shifting mechanism (19) is composed of a shifting cover (13) fixed to said gearbox casing (1), a shifting shaft (14), a shifting member (20) for shifting gears with variable speed on said shifting shaft (14), and a handle (15) for controlling the operation of said shifting member (20) at one end of said shifting shaft (14), and said shifting cover (13) is further provided with an auxiliary unit (16) for facilitating shifting gears.

5. The front speed change mechanism of the gearbox as claimed in claim 1, wherein the outer peripheral walls of the two ends of the transmission shaft (2) are provided with meshing teeth (17) for meshing transmission, and the meshing teeth (17) and the transmission shaft (2) are provided in an integral structure.