CN218558572U - Drive axle assembly integrated at front end of input shaft of main speed reducer for realizing two-gear speed change - Google Patents

Abstract

The utility model discloses an integrated transaxle assembly that realizes two grades of variable speeds at main reducer input shaft front end relates to derailleur technical field, including the installation body that gap bridge case lid and gap bridge case casing are constituteed, and locate input shaft and output shaft on the installation body, pneumatic operating mechanism is utilized in this design, and drive mechanism input shaft, output shaft coaxial line are arranged simultaneously, simple structure, and is small, light in weight, the spatial arrangement of being convenient for, and low in manufacturing cost, and it is convenient to maintain, and the transaxle still possesses the function of high, low two grades of speed reductions.

Description

Drive axle assembly integrated at front end of input shaft of main speed reducer for realizing two-gear speed change

Technical Field

The utility model relates to a derailleur technical field especially relates to an integrated transaxle assembly that realizes two grades of variable speeds at main reducer input shaft front end.

Background

The speed changer is also called as a speed changing box, is a mechanism for changing the rotating speed and the torque from an engine, can fix or change the transmission ratio of an output shaft and an input shaft in a stepping way, and consists of a speed changing transmission mechanism and an operating mechanism, the common types of the operating mechanism comprise a mechanical type and a hydraulic type, the mechanical type is also called as a lever system, and the mechanical operating device has simple structure, low manufacturing cost, less faults and low mechanical efficiency; the hydraulic control mechanism has small friction resistance, small mass, convenient arrangement, soft joint and no influence of vehicle body deformation, but has high manufacturing cost and more faults, the current energy crisis and environmental problems are increasingly serious, hydraulic control not only easily causes environmental pollution, but also does not accord with the concept of green environmental protection, furthermore, the main reducer of the transmission system of the traditional mainstream vehicle type generally adopts a single-stage transmission, the transmission with the structure only can provide a fixed reduction ratio, the reduction ratio cannot be adjusted by changing gears according to various motion conditions of the whole vehicle during use, the output rotating speed and the torque of a traction motor are difficult to be adjusted adaptively, the service life of the mechanism is reduced while the transmission efficiency is greatly reduced, in order to solve the problems, a pneumatic control mechanism is introduced into the design, meanwhile, the differential principle of a differential mechanism is utilized to realize two-gear speed change, the transmission comprises an input shaft and an output shaft which are arranged coaxially in the longitudinal direction, and the torque output of the transmission is transmitted to the input shaft of the main reducer of a drive axle according to two speed ratios, so as to realize the function of high-gear and low-gear speed reduction of the drive axle.

SUMMERY OF THE UTILITY MODEL

To above not enough, the utility model provides an integrated transaxle assembly that realizes two grades of variable speeds at main reducer input shaft front end, this design utilizes pneumatic operating mechanism, and drive mechanism input shaft, output shaft coaxial line arrange simultaneously, simple structure, and is small, light in weight, the spatial arrangement of being convenient for, and low in manufacturing cost, it is convenient to maintain, and the transaxle still possesses the function of high, low two grades of speed reductions.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change comprises:

a bridge box cover;

the gap bridge box shell is connected with the gap bridge box cover through bolts;

the output shaft is erected at the end parts of the gap bridge box cover and the gap bridge box shell, and an output transmission part is arranged on the output shaft;

the input mounting shell is connected with the gap bridge box cover through a bolt, and an input mounting end cover is arranged at the front end of the input mounting shell;

an input shaft mounted on the input mounting end cap;

pneumatic portion of shifting erects input installation shell with cross on the bridge box cover, just pneumatic portion of shifting with be the relation of connection between the output drive portion, pneumatic portion of shifting is including cylinder, cylinder piston, shift fork axle, shift fork and spring, shift fork axle erects input installation shell with cross on the bridge box cover, the shift fork axle with the input shaft is parallel, the shift fork is established with the spring housing on the shift fork axle, the cylinder is installed on the input installation shell, be equipped with on the output of cylinder the cylinder piston, the shift fork with be the relation between the output drive portion, through the drive of cylinder realizes shifting the variable speed.

The utility model discloses a further preferred scheme is, output transmission portion is including output transmission front portion and output transmission rear portion, output transmission front portion is including round pin axle, catch end cover, catch and hexagon socket head cap bolt, round pin axle and hexagon socket head cap bolt install catch end cover and catch extremely in proper order cross on the bridge box cover, the shift fork card is in on the draw-in groove that forms between catch end cover and catch.

The utility model discloses a further preferred scheme is, the input shaft with the output shaft coaxial line sets up.

The utility model discloses a further preferred scheme is, the input shaft with connect through planetary gear transmission between the output shaft, planetary gear installs on the derailleur shell, the derailleur shell is including derailleur front shell and derailleur backshell, the derailleur front shell is installed through deep groove ball bearing respectively with the derailleur backshell in the casing of input installation shell.

The utility model discloses a scheme of further preferred is, input shaft tail end department is equipped with preceding half shaft gear, the anterior segment department of output shaft is equipped with latter half shaft gear, preceding half shaft gear and latter half shaft gear respectively with planetary gear's preceding rear end insection meshing.

The utility model discloses a scheme of further preferred is, input shaft anterior segment department overlaps in proper order and is equipped with big deep groove ball bearing and flange, the flange will big deep groove ball bearing support press install extremely on the input installation end cover.

The utility model discloses a further preferred scheme is, install the derailleur front end housing through hexagonal flange face bolt on the derailleur front shell.

A further preferred embodiment of the present invention is that the planetary gear is rotatably mounted on a cross shaft.

The utility model discloses a further preferred scheme is, be equipped with the derailleur rear end cap on the derailleur backshell.

The utility model discloses a further preferred scheme is, output transmission rear portion is including well axle meshing tooth cover, output gear and interaxial differential mechanism assembly, well axle meshing tooth cover, output gear and interaxial differential mechanism assembly suit are in proper order in on the output shaft, the card has well axle meshing shift fork on the well axle meshing tooth cover.

The utility model discloses a further preferred scheme is, coaxial being provided with on the tail end of output shaft and running through the axle, the other end that runs through the axle is the output flange, with it is provided with first semi-axis and second semi-axis on the vertical direction to run through the axle, the coaxial setting of first semi-axis and second semi-axis.

The utility model discloses a further preferred scheme is, be equipped with well axle input shaft and front axle output shaft on the case lid of passing a bridge, the axis of output shaft, well axle input shaft and front axle output shaft is parallel relation respectively, well axle input shaft cover is equipped with well axle input gear, the cover is equipped with front axle output gear on the front axle output shaft, well axle input gear with be the meshing relation between front axle output gear.

The utility model discloses a further preferred scheme is, be equipped with front axle output flange on the case lid of passing a bridge, front axle output flange with the coaxial setting of front axle output shaft, be equipped with front axle output meshing tooth cover on the front axle output shaft, front axle output meshing tooth cover is located front axle output flange with between the front axle output gear, the card is equipped with front axle output shift fork on the front axle output meshing tooth cover.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a pair of integrated transaxle assembly that realizes two grades of variable speeds at main reducer input shaft front end utilizes pneumatic operating mechanism to accomplish the operation of shifting, accords with the green theory, and pneumatic more convenient and fast response of shifting simultaneously.

2. The input shaft and the output shaft in the utility model are coaxial line arrangement, simple structure, and the spatial arrangement of being convenient for can also reduce manufacturing cost simultaneously, can also make things convenient for the maintenance in later stage.

3. This practicality transmits the moment of torsion of car gearbox output to transaxle final drive input shaft according to two kinds of speed ratios, has solved the difficult problem of transaxle speed reduction ratio simplification.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic view of the overall structure of the present invention.

Wherein the labels shown in the figures are: 1. a flange; 2. an input shaft; 3. a large deep groove ball bearing; 4. a front half-shaft gear; 5. hexagonal flange face bolts; 6. a transmission front end cover; 7. a planetary gear; 8. a transmission front case; 9. a cross shaft; 10. a transmission rear case; 11. a rear half shaft gear; 12. a transmission rear end cap; 13. a pin shaft; 14. a lock ring end cover; 15. a locking ring; 16. a hexagon socket head cap screw; 17. a deep groove ball bearing; 18. a cylinder; 19. a cylinder piston; 20. a shift fork shaft; 21. a shifting fork; 22. a spring; 23. the middle bridge is engaged with the gear sleeve; 24. the middle axle is engaged with a shifting fork; 25. an output gear; 26. an output shaft; 27. an inter-axle differential assembly; 28. a bridge box housing; 29. a through shaft; 30. an output flange; 31. a first half shaft; 32. a second half shaft; 33. a middle axle input shaft; 34. a middle axle input gear; 35. a front axle output gear; 36. the front axle outputs the meshing gear sleeve; 37. a front axle output shifting fork; 38. a front axle output shaft; 39. a front axle output flange; 40. a bridge box cover.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside" and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Examples

Referring to fig. 1, a preferred embodiment of the present invention provides a drive axle assembly integrated at the front end of an input shaft of a main reducer to realize two-gear transmission, which includes a gap axle box cover 40 and a gap axle box housing 28, wherein the gap axle box housing 28 and the gap axle box cover 40 are combined and connected into a mounting housing through bolts;

wherein, the output shaft 26 is erected on the installation shell, and the output transmission part is sleeved on the output shaft 26;

an input mounting shell is connected to the intermediate box cover 40 through bolts, an input mounting end cover is arranged at the front end of the input mounting shell, an input shaft 2 is mounted on the input mounting end cover, the input shaft 2 and the output shaft 26 are coaxially arranged, the input shaft 2 and the output shaft 26 are in transmission connection through a planetary gear 7, the planetary gear 7 is mounted on a transmission shell through a cross shaft 9, the transmission shell comprises a transmission front shell 8 and a transmission rear shell 10, the transmission front shell 8 and the transmission rear shell 10 are respectively mounted in the shell of the input mounting shell through deep groove ball bearings 17, a front half shaft gear 4 is arranged at the tail end of the input shaft 2, a rear half shaft gear 11 is arranged at the front section of the output shaft 26, and the front half shaft gear 4 and the rear half shaft gear 11 are respectively meshed with the front end and rear end teeth of the planetary gear 7;

the output torque of a half axle gear on the differential is set as M1 and M2, the input torque of a cross shaft 9 is set as M0, and the torque characteristic of the differential is as follows: m1= M2=0.5m0;

setting the output rotating speed of a half axle gear on the differential mechanism as N1 and N2, and the input rotating speed of a cross shaft 9 as NK, and obtaining the rotating speed characteristic of the differential mechanism as follows:

when there is no differential speed: n1= N2= NK,

when differential speed exists: n1+ N2=2NK;

a transmission rear end cover 12 is arranged on the transmission rear shell 10;

the pneumatic gear shifting part is erected on the input mounting shell and the gap bridge box cover 40 and is connected with the output transmission part, the pneumatic gear shifting part comprises a cylinder 18, a cylinder piston 19, a shifting fork shaft 20, a shifting fork 21 and a spring 22, the shifting fork shaft 20 is erected on the input mounting shell and the gap bridge box cover 40, the shifting fork shaft 20 is parallel to the input shaft 2, the shifting fork 21 and the spring 22 are sleeved on the shifting fork shaft 20, the cylinder 18 is installed on the input mounting shell, the cylinder piston 19 is arranged on the output end of the cylinder 18, the shifting fork 21 and the output transmission part are in relation, and gear shifting and speed changing are realized by driving of the cylinder 18;

the specific realization principle is as follows: the lock ring assembly is matched with the rear half shaft gear spline. When the cylinder 18 is in a non-pneumatic state, the acting force generated by the spring 22 extends the lock ring assembly and the rear half shaft gear spline to move forward through the shifting fork, so that the pin shaft 13 is inserted into the pin hole of the rear end cover of the transmission, the rear half shaft gear is locked with the transmission shell assembly, at the moment, the front and rear half shaft gears and the planetary gear 7 do not rotate relatively (namely, the planetary gear 7 only revolves and does not rotate), the transmission has no differential function, the rotating speed transmitted by the input shaft 2 drives the transmission shell assembly to rotate through the front half shaft gear 1, and the rotating speed is transmitted to the output shaft 26 through the cross shaft 9 spline according to 1.

After the cylinder 18 is in a ventilation state, under the action of air pressure, a piston of the cylinder overcomes the acting force of the spring 22, the lock ring assembly extends the rear half axle gear spline through the shifting fork shaft and the shifting fork and moves backwards, the pin shaft is separated from the pin hole of the rear end cover of the transmission, then the pin shaft is inserted into the pin hole of the end cover of the shell of the transmission, the rear half axle gear and the shell of the transmission are locked, the rear half axle gear cannot rotate, and the rotating speed is 0. The transmission now has a differential function, with front side gear speed =2 × transmission case assembly speed, depending on the speed characteristics of the differential. The rotational speed transmitted by the input shaft is reduced in rotation by the front side gear and through the planetary gears 7, the rotational speed is transmitted to the transmission case assembly in a ratio of 2.

The utility model discloses preferred embodiment, output transmission portion is including output transmission front portion and output transmission rear portion, output transmission front portion is including round pin axle 13, catch end cover 14, catch 15 and hexagon socket head cap screw 16, round pin axle 13 and hexagon socket head cap screw 16 install catch end cover 14 and catch 15 extremely in proper order on the case lid 40 of passing a bridge, shift fork 21 card is in on the draw-in groove that forms between catch end cover 14 and catch 15.

The utility model discloses in the preferred embodiment, 2 anterior segments departments of input shaft are equipped with big deep groove ball bearing 3 and flange 1 in proper order, flange 1 will big deep groove ball bearing 3 support press install extremely on the input installation end cover, install derailleur front end housing 6 through hexagonal flange face bolt 5 on the derailleur front shell 8.

In the preferred embodiment of the present invention, the output transmission rear portion comprises a middle axle meshing gear sleeve 23, an output gear 25 and an inter-axle differential assembly 27, the middle axle meshing gear sleeve 23, the output gear 25 and the inter-axle differential assembly 27 are sequentially sleeved on the output shaft 26, and a middle axle meshing shift fork 24 is clamped on the middle axle meshing gear sleeve 23;

in the preferred embodiment of the present invention, a through shaft 29 is coaxially disposed on the tail end of the output shaft 26, the other end of the through shaft 29 is an output flange 30, a first half shaft 31 and a second half shaft 32 are disposed in a direction perpendicular to the through shaft 29, and the first half shaft 31 and the second half shaft 32 are coaxially disposed;

in the preferred embodiment of the present invention, the intermediate axle input shaft 33 and the front axle output shaft 38 are disposed on the intermediate axle box cover 40, the axes of the output shaft 26, the intermediate axle input shaft 33 and the front axle output shaft 38 are respectively in parallel relationship, the intermediate axle input shaft 33 is sleeved with the intermediate axle input gear 34, the front axle output shaft 38 is sleeved with the front axle output gear 35, and the intermediate axle input gear 34 and the front axle output gear 35 are in meshing relationship;

the utility model discloses in the preferred embodiment, be equipped with front axle output flange 39 on the case lid 40 of passing a bridge, front axle output flange 39 with the coaxial setting of front axle output shaft 38, be equipped with front axle output meshing tooth cover 36 on the front axle output shaft 38, front axle output meshing tooth cover 36 is located front axle output flange 39 with between the front axle output gear 35, the card is equipped with front axle output shift fork 37 on the front axle output meshing tooth cover 36.

By integrating the description of the embodiment, the drive axle assembly integrated at the front end of the input shaft 2 of the main speed reducer and realizing two-gear speed change utilizes the pneumatic control mechanism to complete the operations of gear shifting and gear shifting, accords with the green environmental protection idea, and simultaneously, the pneumatic gear shifting is more convenient and quick to respond; the input shaft 2 and the output shaft 26 are arranged coaxially, so that the structure is simple, the space arrangement is convenient, the manufacturing cost can be reduced, and the later maintenance can be facilitated; this practicality transmits the moment of torsion of car gearbox output to transaxle final drive input shaft according to two kinds of speed ratios, has solved the difficult problem of transaxle reduction ratio simplification.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (13)

1. A drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized by comprising:

a bridge box cover (40);

a bridge piece box shell (28) connected with the bridge piece box cover (40) through bolts;

the output shaft (26) is erected at the end parts of the gap bridge box cover (40) and the gap bridge box shell (28), and an output transmission part is arranged on the output shaft (26);

the input mounting shell is connected with the gap bridge box cover (40) through a bolt, and an input mounting end cover is arranged at the front end of the input mounting shell;

an input shaft (2) mounted on the input mounting end cap;

pneumatic portion of shifting, the erectting is in input installation shell with on the case lid (40) of passing a bridge, just pneumatic portion of shifting with be the relation of connection between the output transmission portion, pneumatic portion of shifting is including cylinder (18), cylinder piston (19), declutch shift shaft (20), shift fork (21) and spring (22), declutch shift shaft (20) erects the input installation shell with on the case lid (40) of passing a bridge, declutch shift shaft (20) with input shaft (2) are parallel, shift fork (21) and spring (22) cover are established on declutch shift shaft (20), cylinder (18) are installed on the input installation shell, be equipped with on the output of cylinder (18) cylinder piston (19), shift fork (21) with be the relation between the output transmission portion, through the variable speed of shifting is realized to the drive of cylinder (18).

2. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer to realize two-gear speed change is characterized in that the output transmission part comprises an output transmission front part and an output transmission rear part, the output transmission front part comprises a pin shaft (13), a lock ring end cover (14), a lock ring (15) and an inner hexagonal cylindrical head bolt (16), the pin shaft (13) and the inner hexagonal cylindrical head bolt (16) sequentially mount the lock ring end cover (14) and the lock ring (15) on the bridge passing box cover (40), and the shifting fork (21) is clamped on a clamping groove formed between the lock ring end cover (14) and the lock ring (15).

3. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that the input shaft (2) and the output shaft (26) are coaxially arranged.

4. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that the input shaft (2) is in transmission connection with the output shaft (26) through a planetary gear (7), the planetary gear (7) is installed on a speed changer shell, the speed changer shell comprises a front speed changer shell (8) and a rear speed changer shell (10), and the front speed changer shell (8) and the rear speed changer shell (10) are respectively installed in a shell of the input installation shell through deep groove ball bearings (17).

5. A drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change according to claim 4, characterized in that a front half shaft gear (4) is arranged at the tail end of the input shaft (2), a rear half shaft gear (11) is arranged at the front section of the output shaft (26), and the front half shaft gear (4) and the rear half shaft gear (11) are respectively meshed with the front end and the rear end of the planetary gear (7) in a tooth pattern mode.

6. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that a large deep groove ball bearing (3) and a flange (1) are sequentially sleeved at the front section of the input shaft (2), and the flange (1) enables the large deep groove ball bearing (3) to be installed on the input installation end cover in a pressing mode.

7. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that a transmission front end cover (6) is mounted on the transmission front shell (8) through a hexagon flange bolt (5).

8. A transaxle assembly with two-speed transmission integrated in the front end of the input shaft of the final drive according to claim 4, characterized in that the planetary gears (7) are rotatably mounted on a spider (9).

9. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that a transmission rear end cover (12) is arranged on the transmission rear shell (10).

10. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer to realize two-gear speed change is characterized in that the rear part of the output transmission comprises a middle axle meshing gear sleeve (23), an output gear (25) and an inter-axle differential assembly (27), the middle axle meshing gear sleeve (23), the output gear (25) and the inter-axle differential assembly (27) are sequentially sleeved on the output shaft (26), and a middle axle meshing shifting fork (24) is clamped on the middle axle meshing gear sleeve (23).

11. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer to realize two-gear speed change is characterized in that a through shaft (29) is coaxially arranged at the tail end of the output shaft (26), the other end of the through shaft (29) is an output flange (30), a first half shaft (31) and a second half shaft (32) are arranged in a direction perpendicular to the through shaft (29), and the first half shaft (31) and the second half shaft (32) are coaxially arranged.

12. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer to realize two-gear speed change is characterized in that a middle axle input shaft (33) and a front axle output shaft (38) are arranged on a gap axle box cover (40), the axes of the output shaft (26), the middle axle input shaft (33) and the front axle output shaft (38) are respectively in parallel relation, a middle axle input gear (34) is sleeved on the middle axle input shaft (33), a front axle output gear (35) is sleeved on the front axle output shaft (38), and the middle axle input gear (34) and the front axle output gear (35) are in meshing relation.

13. The drive axle assembly integrated at the front end of an input shaft of a main speed reducer for realizing two-gear speed change is characterized in that a front axle output flange (39) is arranged on an intermediate box cover (40), the front axle output flange (39) and the front axle output shaft (38) are coaxially arranged, a front axle output meshing gear sleeve (36) is arranged on the front axle output shaft (38), the front axle output meshing gear sleeve (36) is arranged between the front axle output flange (39) and the front axle output gear (35), and a front axle output shifting fork (37) is clamped on the front axle output meshing gear sleeve (36).

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