CN220302636U

CN220302636U - Two-drive-change four-drive transfer case assembly of engineering vehicle gearbox

Info

Publication number: CN220302636U
Application number: CN202321948285.2U
Authority: CN
Inventors: 魏显波
Original assignee: Hubei United Gravity Technology Co ltd
Current assignee: Hubei United Gravity Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-01-05
Anticipated expiration: 2033-07-24

Abstract

The utility model discloses a two-drive-to-four-drive transfer case assembly of an engineering vehicle gearbox, which relates to the technical field of automobile manufacturing and comprises an upper shell and a lower shell which are matched with each other, wherein two first mounting holes are formed in the top of the upper shell, and two second mounting holes are formed in the bottom of the lower shell. The device adopts seamless connection with the gearbox shaft, so that the coaxiality of the gearbox shaft and the transfer case shaft is effectively guaranteed, the stability of a vehicle in the running process is protected, meanwhile, the gearbox is changed into four-wheel drive from original double-wheel drive through the conversion of the internal structure of the transfer case, the power of the gearbox and the running activity of the vehicle are increased, the service life of the vehicle is effectively prolonged, the connection relation between the output main shaft and the front axle output shaft can be changed according to requirements through the pneumatic control assembly, or two-wheel drive or four-wheel drive can be realized, the running speed or the stability of the vehicle can not be influenced at the same time, the vehicle is enabled to be more efficient and economical, and maintenance is also more convenient.

Description

Two-drive-change four-drive transfer case assembly of engineering vehicle gearbox

Technical Field

The utility model relates to the technical field of automobile manufacturing, in particular to a two-drive-change four-drive transfer case assembly of an engineering vehicle gearbox.

Background

The transfer case is a main component of the existing automobile transmission system, and has the main effects that the power of the transfer case is divided and supplied through the power and the direction of the transfer case, so that the original single function of the transfer case can only be realized by a rear-drive or front-drive transfer case to realize front-rear divided driving, and larger power is provided for the transfer case. The prior art in the current market is that the gearbox driving shaft is directly connected with the front axle or the rear axle through the flange, only one-way driving can be realized, and as a result, the power of the gearbox is insufficient and obvious, and meanwhile, the service life of the gearbox is reduced.

Disclosure of Invention

The utility model provides an aim at provides two drive of engineering truck gearbox become four drive transfer case assemblies to propose gearbox driving shaft through flange direct connection front axle or rear axle among the above-mentioned background art, only can realize that unidirectional drive leads to the power of gearbox not enough to show and the problem that service life is lower.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a two drive of engineering truck gearbox become four drive transfer case assembly, includes the last casing and the lower casing of looks adaptation, two first mounting holes have been seted up at the top of going up the casing, two second mounting holes have been seted up to the bottom of lower casing, one of them first mounting hole internal rotation is installed the initiative pivot, one of them the second mounting hole internal rotation install with initiative pivot assorted initiative axle sleeve, cup joint on the initiative pivot and install the rear axle flange, another first mounting hole and another in the second mounting hole joint rotates and installs the output main shaft, the front axle hub shell is installed to the bottom of lower casing, front axle output shaft has been cup jointed in the front axle hub shell rotation, the last sliding sleeve with output main shaft assorted pneumatic control subassembly of having installed of front axle hub shell is used for controlling the catch reciprocates, install the front axle flange on the front axle output shaft, be connected with in the initiative and be used for making output main shaft synchronous pivoted gear drive unit.

Preferably, the gear transmission unit comprises a driving gear sleeved on the driving rotating shaft, an output gear is sleeved on the output spindle, a mounting rotating hole is formed in the top of the upper shell, a mounting rotating groove is formed in the inner wall of the bottom of the lower shell, a connecting rotating shaft is mounted in the mounting rotating hole in a common rotating mode, a connecting gear is sleeved on the connecting rotating shaft, and the connecting gear is meshed with the driving gear and the output gear.

Preferably, a protection end cover corresponding to the connection rotating shaft is installed at the top of the upper shell.

Preferably, an oil pump is fixedly arranged at the top end of the output main shaft.

Preferably, the pneumatic control assembly comprises a pneumatic cavity arranged in the front axle housing, an adaptive pneumatic piston is sleeved in the pneumatic cavity in a sliding mode, a shifting fork shaft is sleeved in the center position of the pneumatic piston, one end of the shifting fork shaft extends out of the pneumatic cavity and is movably sleeved with a connecting shifting fork, a fastening unit used for fixing the connecting shifting fork is arranged on the shifting fork shaft, and the other end of the connecting shifting fork is clamped with the connecting lock ring.

Preferably, the fastening unit comprises a locking screw, a locking screw hole is formed in the outer peripheral side of the shifting fork shaft, a mounting through hole is formed in the outer peripheral side of the connecting shifting fork, and the end portion of the locking screw penetrates through the mounting through hole and is installed in the locking screw hole in a threaded mode.

Preferably, an air chamber cover matched with the shifting fork shaft is arranged at the bottom of the front axle housing.

In summary, the utility model has the technical effects and advantages that:

1. the utility model has reasonable structure, the driving shaft sleeve enables the differential gear box to be in seamless connection with the gear box shaft, when the gear box shaft rotates, the driving shaft sleeve drives the driving shaft and the rear axle flange to rotate, meanwhile, the driving shaft rotates to drive the front axle output shaft and the front axle flange to rotate together through the driving gear, the connecting shaft, the connecting gear, the output main shaft and the connecting lock ring, thereby achieving the aim of realizing the original two-drive into four-drive, improving the power and the running motility of the vehicle, enabling the vehicle to be more stable and efficient, simultaneously, the front axle output shaft is in an external modularized design, enabling the internal structure of the original box to be more concise and smooth, being more convenient and concise for replacing worn parts in long-term work, effectively prolonging the service life of the vehicle, and having good practicability;

2. in the utility model, when the pneumatic cavity is inflated or deflated, the pneumatic piston moves up and down, and then the connecting lock ring is driven by the shifting fork shaft, the locking screw and the connecting fork to move up and down together, when the connecting lock ring moves up to be meshed with the output main shaft, the output main shaft rotates to drive the front axle output shaft to rotate together, and when the connecting lock ring moves down to be separated from the output main shaft, the front axle output shaft does not rotate together with the output main shaft, thereby realizing the purpose of changing the working state of the vehicle gearbox according to the requirement, or two-drive or four-drive, and simultaneously not influencing the running speed or stability of the vehicle, so that the vehicle is more efficient, more economic and more convenient to maintain.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a two-drive, four-drive transfer case assembly for an engineering vehicle gearbox in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional elevation view of an embodiment of the present application;

FIG. 3 is a schematic view of a partial side cross-sectional structure of an embodiment of the present application;

fig. 4 is a schematic rear view of the embodiment of the present application.

In the figure: 1. an upper housing; 2. a lower housing; 3. a driving shaft sleeve; 4. a driving rotating shaft; 5. a rear axle flange; 6. an output spindle; 7. a front axle housing; 8. a front axle output shaft; 9. a front axle flange; 10. the connecting rotating shaft; 11. a drive gear; 12. a connecting gear; 13. an output gear; 14. protecting the end cover; 15. an oil pump; 16. a gas chamber cover; 17. a fork shaft; 18. a pneumatic piston; 19. connecting a shifting fork; 20. locking a screw; 21. the lock ring is connected.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to the two-drive four-drive transfer case assembly of the engineering truck gearbox shown in fig. 1-4, the two-drive four-drive transfer case assembly comprises an upper shell 1 and a lower shell 2 which are matched, two first mounting holes are formed in the top of the upper shell 1, two second mounting holes are formed in the bottom of the lower shell 2, an active rotating shaft 4 is rotatably mounted in one of the first mounting holes through a bearing, an active shaft sleeve 3 matched with the active rotating shaft 4 is rotatably mounted in one of the second mounting holes through the bearing, a rear axle flange 5 is mounted in the active rotating shaft 4 in a sleeved mode, an output main shaft 6 is rotatably mounted in the other first mounting hole and the other second mounting hole through the bearing in a sleeved mode, a front axle shaft shell 7 is fixedly mounted at the bottom of the lower shell 2 through bolts, a front axle output shaft 8 is rotatably sleeved in the front axle shaft shell 7 through the bearing, a connecting lock ring 21 matched with the output main shaft 6 is slidably sleeved on the front axle output shaft 8, inner teeth are arranged on the inner periphery side of the connecting lock ring 21, outer teeth meshed with the inner teeth are arranged on the outer periphery of the bottom end of the output main shaft 6, an inner gear control assembly used for controlling the connecting lock ring 21 to move up and down, an output main shaft 6 is mounted in the front axle shell 7, an inner gear 8 is connected with an inner gear drive unit used for driving main shaft 6 in a rotary unit, and a front axle 6 is connected to the front axle unit is rotatably mounted on the front axle drive main unit.

By means of the structure, the transmission shaft is connected with the transmission shaft through the driving shaft sleeve 3, the driving shaft sleeve 3 drives the driving shaft 4 to rotate when the transmission shaft rotates, the driving shaft 4 rotates to drive the rear axle flange 5 to rotate, meanwhile, the driving shaft 4 rotates to drive the output main shaft 6 to synchronously rotate through the gear transmission unit, the output main shaft 6 rotates to drive the front axle output shaft 8 to rotate through the connecting lock ring 21, and then the front axle flange 9 can be driven to rotate together, so that the original two-drive purpose is achieved, the power of the transmission shaft is increased, the transmission shaft is more stable and efficient, meanwhile, the front axle output shaft 8 is in an external modularized design, the original internal structure of the transmission shaft is simpler and smoother, and in long-term work, the transmission shaft is more convenient and concise to replace wearing parts, and the transmission shaft is good in practicality.

As a preferred implementation manner of this embodiment, the gear transmission unit includes a driving gear 11 sleeved on the driving shaft 4, an output gear 13 sleeved on the output spindle 6, a mounting hole provided on the top of the upper housing 1, a mounting groove provided on the inner wall of the bottom of the lower housing 2, a connecting shaft 10 rotatably installed in the mounting hole and the mounting groove, a connecting gear 12 sleeved on the connecting shaft 10, and the connecting gear 12 meshed with the driving gear 11 and the output gear 13. The advantage of setting like this is, when initiative pivot 4 rotates, can drive the rotation of driving gear 11, and driving gear 11 rotates and drives connection pivot 10 and connection gear 12 rotation, and connection gear 12 rotates and drives output gear 13 rotation, and then has realized can drive output spindle 6 synchronous pivoted purpose.

In the present embodiment, a protective end cap 14 corresponding to the connection shaft 10 is mounted on the top of the upper housing 1. This has the advantage that the connecting shaft 10 can be protected.

As a preferred embodiment of the present embodiment, an oil pump 15 is fixedly provided at the top end of the output spindle 6. This has the advantage that the output shaft 6 can be lubricated by supplying oil.

As a preferred implementation manner of this embodiment, the pneumatic control assembly includes a pneumatic cavity disposed in the front axle housing 7, an adaptive pneumatic piston 18 is slidably sleeved in the pneumatic cavity, a shift fork shaft 17 is sleeved in a central position of the pneumatic piston 18, one end of the shift fork shaft 17 extends out of the pneumatic cavity and is movably sleeved with a connection shift fork 19, a fastening unit for fixedly connecting the shift fork 19 is mounted on the shift fork shaft 17, and the other end of the connection shift fork 19 is clamped with a connection lock ring 21. The advantage of this setting is that when aerifing or gassing to pneumatic cavity, pneumatic piston 18 can reciprocate along with the pressure intensity in the pneumatic cavity, pneumatic piston 18 reciprocates can drive through shift fork 17, fastening unit, connection shift fork 19 and connect catch 21 and reciprocate together, and then can change the relation of position between catch 21 and the output main shaft 6, when the catch 21 upwards moves to the phase meshing with output main shaft 6, output main shaft 6 rotates and can drive front axle output shaft 8 and rotate together, when catch 21 downwards moves to the phase separation with output main shaft 6, front axle output shaft 8 can not rotate along with output main shaft 6, thereby realized can change the purpose of the operating condition of vehicle gearbox according to the demand, or two-drive, or four-drive, also can not influence the travel speed or the stability of vehicle simultaneously, make the vehicle reach more high efficiency, more economy, maintenance is also more convenient.

In this embodiment, the fastening unit includes a locking screw 20, a locking screw hole is formed at the outer circumferential side of the fork shaft 17, a mounting through hole is formed at the outer circumferential side of the connection fork 19, and an end portion of the locking screw 20 penetrates through the mounting through hole and is screw-mounted in the locking screw hole. The advantage of setting like this is, when rotating locking screw 20, under the effect of locking screw, locking screw 20 can remove when the pivoted, and then can fix or loosen connection shift fork 19, has realized the purpose of being convenient for install the dismantlement to connection shift fork 19.

In this embodiment, an air chamber cover 16 is mounted on the bottom of the front axle housing 7 to fit the shift rail 17. This has the advantage of protecting the fork shaft 17 and sealing the pneumatic chamber.

The working principle of the utility model is as follows:

when the novel transmission is used, the driving shaft sleeve 3 is sleeved on the transmission shaft to form seamless connection, when the transmission shaft rotates, the driving shaft sleeve 3 drives the driving shaft 4 to rotate, the driving shaft 4 rotates to drive the rear axle flange 5 to rotate, meanwhile, the driving shaft 4 rotates to drive the output main shaft 6 to synchronously rotate through the driving gear 11, the connecting shaft 10, the connecting gear 12 and the output gear 13, the output main shaft 6 rotates to drive the front axle output shaft 8 to rotate through the connecting lock ring 21, and then the front axle flange 9 can be driven to rotate together, so that the original two-drive purpose of four-drive is achieved, the power of the novel transmission is increased, the novel transmission is more stable and efficient, meanwhile, the front axle output shaft 8 is in an external modularized design, the internal structure of the original transmission is simpler and smoother, the novel transmission is more convenient and concise for the replacement of wearing parts in long-term work, and the practicability is good.

When the air chamber connecting mechanism is started to charge or discharge air into the air chamber, the air piston 18 moves up and down along with the pressure intensity in the air chamber, the air piston 18 moves up and down to drive the connecting lock ring 21 to move up and down together through the shifting fork shaft 17, the locking screw 20 and the connecting shifting fork 19, when the connecting lock ring 21 moves up to be meshed with the output main shaft 6, the output main shaft 6 rotates to drive the front axle output shaft 8 to rotate together, when the connecting lock ring 21 moves down to be separated from the output main shaft 6, the front axle output shaft 8 does not rotate along with the output main shaft 6, so that the aim of changing the working state of the vehicle gearbox according to requirements is fulfilled, or two-drive or four-drive is fulfilled, the running speed or stability of the vehicle is not influenced, the vehicle is enabled to reach higher efficiency, economy and maintenance is more convenient.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Two drives of engineering truck gearbox become four drives transfer case assembly, its characterized in that: including last casing (1) and lower casing (2) of looks adaptation, two first mounting holes have been seted up at the top of going up casing (1), two second mounting holes have been seted up to the bottom of casing (2) down, one of them initiative pivot (4) have been installed in first mounting hole internal rotation, one of them install in the second mounting hole with initiative pivot (4) assorted initiative axle sleeve (3), install rear axle flange (5) on initiative pivot (4), another first mounting hole and another in the second mounting hole joint rotation install output main shaft (6), front axle housing (7) have been installed to the bottom of casing (2) down, front axle output shaft (8) have been cup jointed in front axle housing (7) internal rotation, front axle output shaft (8) go up sliding sleeve with output main shaft (6) assorted connecting lock ring (21), install in front axle housing (7) and be used for control locking ring (21) reciprocates, control assembly is used for driving axle (8) and is installed on front axle output shaft (6) and is used for driving axle (4) to rotate synchronous drive unit.

2. The two-drive four-drive transfer case assembly of an engineering vehicle gearbox, according to claim 1, is characterized in that: the gear transmission unit comprises a driving gear (11) sleeved on the driving rotating shaft (4), an output gear (13) is sleeved on the output main shaft (6), a mounting rotating hole is formed in the top of the upper shell (1), a mounting rotating groove is formed in the inner wall of the bottom of the lower shell (2), a connecting rotating shaft (10) is mounted in the mounting rotating hole in a co-rotating mode, a connecting gear (12) is sleeved on the connecting rotating shaft (10), and the connecting gear (12) is meshed with the driving gear (11) and the output gear (13).

3. The two-drive four-drive transfer case assembly of the engineering vehicle gearbox, according to claim 2, is characterized in that: the top of the upper shell (1) is provided with a protective end cover (14) corresponding to the connecting rotating shaft (10).

4. The two-drive four-drive transfer case assembly of an engineering vehicle gearbox, according to claim 1, is characterized in that: an oil pump (15) is fixedly arranged at the top end of the output main shaft (6).

5. The two-drive four-drive transfer case assembly of an engineering vehicle gearbox, according to claim 1, is characterized in that: the pneumatic control assembly comprises a pneumatic cavity arranged in a front axle housing (7), an adaptive pneumatic piston (18) is sleeved in the pneumatic cavity in a sliding mode, a shifting fork shaft (17) is sleeved in the center position of the pneumatic piston (18), one end of the shifting fork shaft (17) extends out of the pneumatic cavity and is movably sleeved with a connecting shifting fork (19), a fastening unit used for fixing the connecting shifting fork (19) is arranged on the shifting fork shaft (17), and the other end of the connecting shifting fork (19) is clamped with a connecting lock ring (21).

6. The two-drive four-drive transfer case assembly for the engineering vehicle gearbox of claim 5, wherein: the fastening unit comprises a locking screw (20), a locking screw hole is formed in the outer peripheral side of the shifting fork shaft (17), a mounting through hole is formed in the outer peripheral side of the connecting shifting fork (19), and the end portion of the locking screw (20) penetrates through the mounting through hole and is installed in the locking screw hole in a threaded mode.

7. The two-drive four-drive transfer case assembly for the engineering vehicle gearbox of claim 5, wherein: an air chamber cover (16) matched with the shifting fork shaft (17) is arranged at the bottom of the front axle housing (7).