CN212839327U

CN212839327U - Transfer case

Info

Publication number: CN212839327U
Application number: CN202021716674.9U
Authority: CN
Inventors: 刘杰; 金国鹤; 屠仁刚; 曹林锋; 杨帆; 李广元; 施虎; 乔贺; 苏志伟
Original assignee: Zhejiang Zomax Transmission Co ltd
Current assignee: Zhejiang Zomax Transmission Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-03-30
Anticipated expiration: 2030-08-17

Abstract

The utility model discloses a transfer case, establish in proper order including transmission shaft and a plurality of edge axial direction cover transmission epaxial driving medium still establishes including the cover on the transmission shaft with the transmission shaft rotates the annular housing of connection, annular housing with form annular cavity between the transmission shaft, annular housing be provided with the import of annular cavity intercommunication, the transmission shaft middle part is provided with axially extended water conservancy diversion hole, water conservancy diversion hole with the annular cavity intercommunication, on the transmission shaft with each the position that the driving medium corresponds all be provided with the export of water conservancy diversion hole intercommunication. In this transfer case, can lead the corresponding driving medium of inside fluid in the water conservancy diversion hole respectively to guarantee that each driving medium obtains fully lubricated respectively, thereby reduced the ablation probability of spare part, thereby the life of transfer case that improves greatly.

Description

Transfer case

Technical Field

The utility model relates to a mechanical transmission technical field, more specifically say, relate to a transfer case.

Background

Transfer case lubricating systems adopted in the prior art mostly adopt splash type lubrication, and gear oil is used for lubricating all parts by running of gears or lubricating oil holes through oil guide grooves. Thereby resulting in inadequate ablation of some of the component parts.

To sum up, how to effectively solve the problem that the lubrication effect of each transmission part on the transmission shaft of the transfer case is not good is a problem that needs to be solved urgently by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a transfer case, this transfer case can solve the problem that the lubricated effect of each driving medium is not good on the transfer case transmission shaft effectively.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a transfer case, includes that transmission shaft and a plurality of edge axial direction overlap in proper order establish transmission epaxial driving medium still establish including the cover the transmission shaft in order with the transmission shaft rotates the annular casing of connecting, the annular casing with form annular cavity between the transmission shaft, the annular casing be provided with the import of annular cavity intercommunication, the transmission shaft middle part is provided with axial extension's water conservancy diversion hole, water conservancy diversion hole with the annular cavity intercommunication, on the transmission shaft with each the position that the driving medium corresponds all be provided with the export of water conservancy diversion hole intercommunication.

In this transfer case, when using, through supplying high-pressure oil to in the ring casing this moment, or set up the pump body in the ring casing in order to follow the lubricating oil of oil tank suction, lubricating oil can enter into the toroidal cavity, then by the toroidal cavity to the water conservancy diversion hole in transmission shaft middle part, along with the rotation of transmission shaft, lubricating oil can flow out through each export to the corresponding driving medium of flow direction, so that the driving medium that makes corresponds obtains the lubrication. In this transfer case, through annular housing with in the water conservancy diversion hole of the leading-in output shaft of fluid, because each driving medium all is installed on the transmission shaft, so can be through the epaxial export of transmission, can be with the driving medium that the inside fluid of water conservancy diversion hole leads to respectively corresponds to guarantee that each driving medium obtains fully lubricated respectively, thereby reduced the ablation probability of spare part, thereby the life of transfer case that improves greatly. To sum up, this transfer case can solve the lubricated not good problem of effect of each driving medium on the transfer case transmission shaft effectively.

Preferably, a driving wheel and a driven wheel are arranged in the annular cavity, and the driving wheel is fixedly mounted on the transmission shaft, so that the transmission shaft can be matched with the driven wheel to form a suction pump when driving the driving wheel to rotate.

Preferably, the annular housing comprises an oil pump shell and an oil pump cover which are arranged in parallel along the axial direction, and the annular cavity is formed between the oil pump shell and the oil pump cover.

Preferably, the inlet is connected with an oil pipe, and the oil pipe is provided with a filter screen.

Preferably, the flow guide hole is a shaft hole; an input shaft is sleeved at one end of the transmission shaft.

Preferably, the transmission member comprises at least one of: the gear shifting mechanism comprises a needle bearing, four-wheel drive coupling teeth, a combined sleeve sub-assembly, a gear shifting sleeve, a lubricating thrust disc, a sun gear, a thrust gasket and an input shaft bearing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure diagram of a transfer case according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an oil pump subassembly provided by an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure view of an oil pump subassembly provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an oil pump casing according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional structure view of an input shaft according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an output shaft according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a sun gear according to an embodiment of the present invention.

The drawings are numbered as follows:

the transmission device comprises a transmission shaft 1, a combined sleeve sub-assembly 2, a four-wheel drive coupling gear 3, an annular shell 4, a sun gear 5, a lubricating thrust disc 6, a thrust washer 7, an input shaft bearing 8, an input shaft 9, a needle bearing 10, an L/H gear shifting sleeve 11, a driven wheel 12, a driving wheel 13, an oil pump shell 14, an oil pump cover 15, a labyrinth groove 16, a central hole 100, a first oil hole 110, a second oil hole 120, a third oil hole 130, a fourth oil hole 140, a fifth oil hole 150, a sixth oil hole 160 and a seventh oil hole 170.

Detailed Description

The embodiment of the utility model discloses transfer case is in order to solve the problem that the lubricated effect of each driving medium is not good on the transfer case transmission shaft effectively.

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

Referring to fig. 1 to 7, fig. 1 is a schematic cross-sectional view of a transfer case according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of an oil pump subassembly provided by an embodiment of the present invention; fig. 3 is a schematic cross-sectional structure view of an oil pump subassembly provided in an embodiment of the present invention; fig. 4 is a schematic structural diagram of an oil pump casing according to an embodiment of the present invention; fig. 5 is a schematic cross-sectional structure view of an input shaft according to an embodiment of the present invention; fig. 6 is a schematic structural diagram of an output shaft according to an embodiment of the present invention;

In a specific embodiment, the present embodiment provides a transfer case, specifically comprising a drive shaft 1, a transmission member and an annular housing 4.

Wherein transmission shaft 1, generally the output shaft, a plurality of driving medium overlap in proper order along axial direction establishes on transmission shaft 1, the driving medium can be with transmission shaft 1 fixed connection, rotate transmission connection or swing joint, and is specific, can carry out corresponding connection according to the driving medium of difference. In particular, the transmission member may include at least one of the following: the four-wheel drive combined assembly comprises a needle bearing 10, a four-wheel drive combined gear 3, a combined sleeve subassembly 2, a gear shifting sleeve 11, a lubricating thrust plate 6, a sun gear 5, a thrust washer 7 and an input shaft bearing 8, wherein the components are sequentially sleeved on a transmission shaft 1 along the axial direction.

Wherein annular housing 4 cover is established on transmission shaft 1 in order to be connected with transmission shaft 1 rotation, and forms annular cavity between annular housing and the transmission shaft, specifically can open at the annular housing inboard and be equipped with annular groove body, also can open annular groove body on the outside of transmission shaft, also can all have annular groove body to form annular cavity in order to make up.

Annular housing 4 is provided with the import with the annular cavity intercommunication to make can pour into lubricating oil into to the annular cavity through the import, because annular housing 4 does not rotate along with transmission shaft 1, so the position of import can be stabilized down, is connected with oil supply unit with the convenience.

Wherein the middle part of the transmission shaft 1 is provided with a flow guide hole extending axially, the flow guide hole is communicated with the annular cavity, so that the lubricating oil entering the annular cavity can enter the flow guide hole, and the flow guide hole is generally communicated with the annular cavity through a communicating hole extending radially.

Simultaneously because the water conservancy diversion hole extends in the axial to make on the transmission shaft 1 with each the position that the driving medium corresponds all be provided with the export with the water conservancy diversion hole intercommunication, so that and the lubricating oil that comes out through this export can flow to the driving medium that corresponds. It should be noted that, in the operating state, the transmission shaft 1 rotates, and the outlet is disposed at the radial outer side, which enables the lubricating oil flowing out from the outlet to have a certain centrifugal force, and at the same time, under the oil pressure of the lubricating oil, the lubricating oil can be emitted to the corresponding transmission member.

In this transfer case, when using, through supplying high-pressure oil to the annular housing this moment, or set up the pump body in annular housing 4 in order to draw in lubricating oil from the oil tank, lubricating oil can get into the toroidal cavity, then from the toroidal cavity to the water conservancy diversion hole in transmission shaft 1 middle part, along with transmission shaft 1's rotation, lubricating oil can flow out through each export to the corresponding driving medium of flow direction, so that the corresponding driving medium obtains the lubrication. In this transfer case, through annular housing with in the water conservancy diversion hole of the leading-in output shaft of fluid, because each driving medium all is installed on transmission shaft 1, so can be through the export on the transmission shaft 1, can be with the corresponding driving medium of the fluid direction respectively of inside in the water conservancy diversion hole to guarantee that each driving medium obtains fully lubricated respectively, thereby reduced the ablation probability of spare part, thereby the life of transfer case that improves greatly. To sum up, this transfer case can solve the lubricated not good problem of effect of each driving medium on the transfer case transmission shaft effectively.

Further, considering that when each component on the transmission shaft 1 needs to be lubricated, the component is mainly in a working state, and the transmission shaft 1 is in a rotating state at the time, in order to enable the start and stop of the lubrication to be better linked with the start and stop of the transmission shaft 1, it is preferable that a driving wheel 13 and a driven wheel 12 are arranged in the annular cavity, the driving wheel 13 is fixedly installed on the transmission shaft 1 to be driven by the transmission shaft 1 to rotate, and the transmission shaft 1 can be matched with the driven wheel 12 to form a suction pump when driving the driving wheel 13 to rotate. I.e., the mating relationship between the drive pulley 13 and the driven pulley 12, forms the desired suction pump chamber configuration. Specifically, the driving wheel 13 can be rotated to drive the driven wheel 12 to rotate, and the radial outer structure of the driven wheel 12 can refer to a pump core, mainly a blade structure, of the rotary suction pump. It is of course also possible to generate a pressure difference by the relative movement of the driving pulley 13 and the driven pulley 12, thereby generating a suction force to suck oil from the inlet, and then to inject the oil into the output shaft through the labyrinth grooves 16 on the annular housing 4 of the oil pump.

In order to facilitate the installation of the driving pulley 13 and the driven pulley 12, and the manufacture of the annular housing 4, it is preferable here that the annular housing 14 includes an oil pump housing 14 and an oil pump cover 15 juxtaposed in the axial direction, with an annular cavity formed between the oil pump housing 14 and the oil pump cover 15.

As mentioned above, since the suction pump is formed in the annular cavity, for convenience of application, it is preferred here that the inlet is connected with an oil pipe provided with a sieve. So that when in use, the oil inlet end of the oil pipe is directly inserted into an oil tank to work. And preferably into an oil return tank to allow the oil to be recycled.

Further, in order to avoid the lubricating oil inside the diversion hole from unnecessarily influencing the rotation of the transmission shaft 1, the diversion hole is preferably a shaft hole. In practical applications, the input shaft 9 is generally sleeved on one end of the transmission shaft 1, and the shaft hole is generally axially opened from the end and sealed at the end.

As mentioned above, the transmission member comprises at least one of: the gear shifting mechanism comprises a needle bearing 10, a four-wheel drive coupling 3, a combination sleeve subassembly 2, an L/H gear shifting sleeve 11, a lubricating thrust disc 6, a sun gear 5, a thrust washer 7 and an input shaft bearing 8. For convenience of arrangement, specifically, after lubricating oil enters the transmission shaft 1, the input shaft needle bearing 10 is lubricated through the central hole 100, the four-wheel drive coupling 3 is lubricated through the first oil hole 110, the coupling sleeve assembly 2 is lubricated 2/4D through the second oil hole 120, the L/H shift sleeve 11 is lubricated through the third oil hole 130 while the thrust plate 6 is lubricated through the seventh oil hole 170 formed in the sun gear, and the sun gear 5, the thrust washer 7 and the input shaft bearing 8 are lubricated through the fourth oil hole 140 and the sixth oil hole 160 connected to the fourth oil hole 140 and formed in the input shaft 9. And the lubricating oil is introduced from the annular cavity into the pilot hole through the fifth oil hole 150.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a transfer case, includes that transmission shaft and a plurality of edge axial direction overlap in proper order establish transmission epaxial driving medium, its characterized in that still establishes including the cover on the transmission shaft in order with the transmission shaft rotates the annular casing of connecting, the annular casing with form annular cavity between the transmission shaft, the annular casing be provided with the import of annular cavity intercommunication, the transmission shaft middle part is provided with axial extension's water conservancy diversion hole, the water conservancy diversion hole with the annular cavity intercommunication, on the transmission shaft with each the position that the driving medium corresponds all be provided with the export of water conservancy diversion hole intercommunication.

2. The transfer case of claim 1, wherein a drive wheel and a driven wheel are disposed within the annular cavity, the drive wheel being fixedly mounted on the drive shaft such that the drive shaft can cooperate with the driven wheel to form a suction pump when the drive wheel is rotated by the drive shaft.

3. The transfer case of claim 2, wherein the annular housing includes an oil pump housing and an oil pump cover juxtaposed in an axial direction, the oil pump housing and the oil pump cover defining the annular cavity therebetween.

4. A transfer case according to claim 3, wherein the inlet is connected with an oil pipe provided with a screen.

5. The transfer case of any one of claims 1 to 4, wherein the pilot hole is a shaft hole; an input shaft is sleeved at one end of the transmission shaft.

6. A transfer case according to claim 5, wherein the transmission comprises at least one of: the gear shifting mechanism comprises a needle bearing, four-wheel drive coupling teeth, a combined sleeve sub-assembly, a gear shifting sleeve, a lubricating thrust disc, a sun gear, a thrust gasket and an input shaft bearing.