CN212455451U

CN212455451U - Gearbox and lubricating device of gearbox

Info

Publication number: CN212455451U
Application number: CN202020911908.9U
Authority: CN
Inventors: 刘新宇; 邱权
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-02-02
Anticipated expiration: 2030-05-26

Abstract

The utility model relates to a lubricating arrangement of gearbox and gearbox, wherein the lubricating arrangement of gearbox includes: a fixing member provided with a through hole; the rotating sleeve can rotate along with a rotating part of the gearbox, a central hole is formed in the rotating sleeve in the axial direction, the central hole is not coaxial with the through hole, and a first matching structure and a spiral groove are formed in the inner wall of the central hole; the outer wall of the rotating shaft is provided with a second matching structure and a groove arranged along the axial direction, the rotating shaft can penetrate through the through hole to the central hole, and after the first matching structure is matched with the second matching structure, the rotating shaft can rotate coaxially with the rotating sleeve; the rotating shaft is arranged close to one side wall of the through hole, an oil inlet is formed between the rotating shaft and the other side wall of the through hole far away from the rotating shaft, oil can enter the groove along the oil inlet, and the oil rotates to the spiral groove along with the rotating shaft and is discharged to a part to be lubricated of the gearbox along the central hole. The lubricating device can ensure a better lubricating effect and simplify the whole structure and reduce the cost.

Description

Gearbox and lubricating device of gearbox

Technical Field

The utility model relates to a lubricated equipment technical field, concretely relates to lubricating arrangement of gearbox and gearbox.

Background

The existing lubrication modes of the gearbox are passive lubrication and active lubrication, wherein the passive lubrication is realized by stirring lubricating oil by a gear, and the splashed lubricating oil is directly sprayed to a part to be lubricated or guided by accessories such as an oil collecting tank and the like and then flows into the part to be lubricated; the active lubrication is to establish higher oil pressure by adding an electronic oil pump or a mechanical oil pump and to match various types of oil ducts to convey oil to parts to be lubricated. The passive lubrication structure is simple and low in cost, but the passive lubrication structure has limitations and cannot meet the lubrication requirements in some occasions; the active lubrication effect is good, but the structure is complex and the cost is high.

How to simplify the overall structure and reduce the cost while ensuring a better lubricating effect is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lubricating arrangement of gearbox and gearbox can make overall structure simplify and reduce cost when guaranteeing to have better lubricated effect.

In order to solve the technical problem, the utility model provides a lubricating arrangement of gearbox, it includes: a fixing member provided with a through hole; the rotating sleeve can rotate along with a rotating part of the gearbox, a central hole is formed in the rotating sleeve in the axial direction, the central hole is not coaxial with the through hole, and a first matching structure and a spiral groove are formed in the inner wall of the central hole; the outer wall of the rotating shaft is provided with a second matching structure and a groove arranged along the axial direction, the rotating shaft can penetrate through the through hole to the central hole, and after the first matching structure is matched with the second matching structure, the rotating shaft can rotate coaxially with the rotating sleeve; the rotating shaft is arranged close to one side wall of the through hole, an oil inlet is formed between the rotating shaft and the other side wall of the through hole far away from the rotating shaft, oil can enter the groove along the oil inlet, and the oil can rotate to the spiral groove along with the rotating shaft and is discharged to a part to be lubricated of the gearbox along the central hole.

This lubricating arrangement only can form through mounting, axis of rotation and rotating sleeve three and collect the fluid that will splash and deliver to and treat lubricated part in order to carry out lubricated purpose to it, and the structure is comparatively simple and occupation space is little, can arrange in a flexible way according to the inner space of gearbox to, because mounting, axis of rotation and rotating sleeve three all need have fluid to pass through each other, consequently, the three is clearance fit each other, thereby can reduce the manufacturing accuracy requirement, reduce the processing cost.

The rotation of rotating the cover is driven through the rotation of the rotation piece of gearbox, consequently, need not to establish in addition that drive unit only need to rotate the cover and rotate the piece fixed make the two can rotate in step and realize the self-lubricate effect at this gearbox in the course of the work, when can guaranteeing lubricated effect for overall structure is simple, with low costs.

Optionally, the grooves are arc-shaped grooves with side walls and bottom walls in smooth transition, a protrusion formed between every two adjacent grooves is the second matching structure, and the first matching structure is a matching groove matched with the protrusion.

Optionally, the number of the grooves and the fitting grooves is three.

Optionally, a connecting cylinder is arranged at one end of the rotating sleeve facing the fixing piece, and the connecting cylinder is sleeved outside the fixing piece.

Optionally, the fixing member includes a fixing section and a connecting section, the connecting section is disposed toward one side of the rotating sleeve, the through hole penetrates through the fixing section and the connecting section, and the connecting cylinder is sleeved outside the connecting section.

Optionally, the through hole is an eccentric hole passing through the connecting section.

Optionally, an end of the rotating shaft away from the fixing member is further provided with a mounting head for mounting the rotating shaft.

In addition, the utility model also provides a gearbox, which comprises a shell, a rotating part arranged in the shell, a part to be lubricated and the lubricating device; the fixing piece is fixed with the shell; the rotating part rotates to drive the rotating sleeve to rotate, the oil inlet of the lubricating device faces the side wall of the shell, and oil splashed to the side wall of the shell can enter from the oil inlet and flow to the part to be lubricated.

The technical effect of the transmission case with the lubricating device is similar to that of the lubricating device, and is not repeated herein for saving space.

Optionally, the oil guide device further comprises an oil guide member, the oil guide member comprises a conical barrel sleeved outside the rotating shaft and located at the oil inlet, a small-diameter end of the conical barrel faces the oil inlet, and a large-diameter end of the conical barrel is arranged on one side far away from the oil inlet.

Drawings

FIG. 1 is a cross-sectional view of a transmission provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the lubrication device of FIG. 1;

FIG. 3 is a cross-sectional view of the lubrication device;

FIG. 4 is an exploded view of the lubrication device;

FIG. 5 is a schematic view of the fastener;

FIG. 6 is a schematic view of the structure of the rotating sleeve;

fig. 7 is a schematic view of the structure of the rotating shaft.

In the accompanying fig. 1-7, the reference numerals are illustrated as follows:

10-a lubricating device; 20-a housing; 30-rotation piece, 301-perforation; 40-a bearing; 50-oil guide; 501-a conical barrel;

1-a fixing piece, 11-a through hole, 12 a fixing section and 13-a connecting section;

2-rotating sleeve, 21-central hole, 22-matching groove, 23-spiral groove and 24-connecting cylinder;

3-rotating shaft, 31-bulge, 32-groove and 33-mounting head;

4-oil inlet.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-7, fig. 1 is a sectional view of a transmission according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of the lubrication device of FIG. 1; FIG. 3 is a cross-sectional view of the lubrication device; FIG. 4 is an exploded view of the lubrication device; FIG. 5 is a schematic view of the fastener; FIG. 6 is a schematic view of the structure of the rotating sleeve; fig. 7 is a schematic view of the structure of the rotating shaft.

The embodiment of the utility model provides a lubricating arrangement 10 of gearbox and gearbox, wherein, as shown in FIG. 1, the gearbox includes casing 20, locates the rotation piece 30 in casing 20, treats lubricated part and above-mentioned lubricating arrangement 10, and lubricating arrangement 10 can treat lubricated part and lubricate.

In detail, as shown in fig. 2 and 4, the lubricating device 10 in the present embodiment includes a stationary member 1, a rotating sleeve 2 and a rotating shaft 3, wherein, as shown in fig. 5, the fixed member 1 is fixed with the housing 20 and is provided with a through hole 11, and the rotating sleeve 2 can be rotated by the rotation of the rotating member 30, as shown in fig. 6, the rotating sleeve 2 is provided with a central hole 21 along the axial direction, the central hole 21 is not coaxial with the through hole 11 of the fixing piece 1, the inner wall of the central hole 21 is provided with a first matching structure and a spiral groove 23, as shown in fig. 7, the outer wall of the rotating shaft 3 is provided with a second fitting structure and a groove 32 provided in the axial direction, one end of the rotating shaft 3 can pass through the through hole 11 into the central hole 21, and when the second fitting structure of the rotating shaft 3 is fitted with the first fitting structure in the central hole 21, the rotation of the rotating sleeve 2 can drive the rotating shaft 3 to rotate through the interaction between the first matching structure and the second matching structure.

Because the central hole 21 and the through hole 11 are not coaxial, the rotating shaft 3 is disposed close to one side wall of the through hole 11, so that the rotating shaft 3 is far away from the other side wall of the through hole 11, and an oil inlet 4 (as shown in fig. 2) is formed at the other side wall, oil can enter the groove 32 along the oil inlet 4 (as shown in fig. 2 and 3, position a), and after the groove 32 rotates to the side close to the side wall of the through hole 11 (as shown in fig. 2 and 3, position B) along with the rotation of the rotating shaft 3, as the space becomes smaller, the oil in the groove 32 is squeezed, flows along the groove 32 to one side of the rotating sleeve 2 (as shown in fig. 2 and 3, position C) and passes through the spiral groove 23 to the part needing lubrication, and the moving path of the oil finally flows to the part needing lubrication is shown by a dotted line in fig. 2.

The lubricating arrangement 10 that this embodiment provided only through mounting 1, axis of

rotation

3 and 2 three of rotating sleeve can form the fluid that will splash and collect and deliver to treating lubricated part in order to carry out lubricated purpose to it, the structure is comparatively simple and occupation space is little, can arrange in a flexible way according to the inner space of gearbox, and, because mounting 1, axis of

rotation

3 and 2 three of rotating sleeve all need have fluid to pass through each other, consequently, the three is clearance fit each other, thereby can reduce the manufacturing accuracy requirement, reduce the processing cost.

The rotation of rotating sleeve 2 is driven through the rotation of the rotating part 30 of the gearbox, therefore, the automatic lubrication effect of the gearbox in the working process can be realized only by fixing the rotating sleeve 2 and the rotating part 30 to enable the two to synchronously rotate without additionally arranging a driving part, and the whole structure is simple and low in cost while the lubrication effect can be ensured. In this embodiment, the coaxial transmission between the rotating sleeve 2 and the rotating member 30 can be realized by bolting, welding, clamping, and the like, and is not limited herein.

In the embodiment shown in fig. 1, the component to be lubricated is the bearing 40, the rotating member 30 is connected to the bearing 40 and can rotate relative to the bearing 40, specifically, the rotating member 30 is provided with a through hole 301 extending therethrough in the axial direction thereof, and the oil flows into the through hole 301 along the spiral groove 23 and can flow to the bearing 40 to be lubricated along the through hole 301 to lubricate the bearing 40.

In the above embodiment, the grooves 32 are arc-shaped grooves with smooth transition between the side wall and the bottom wall, and the protrusion 31 formed between two adjacent grooves 32 is the above second engagement mechanism, and the first engagement mechanism is the engagement groove 22 adapted to the protrusion 31. Every recess 32 all sets up between two adjacent archs 31, and each recess 32 is by an arch 31 to the arc wall of another protruding 31 smooth transition, so set up, can increase the oily area that connects of recess 32, guarantee by the fluid homoenergetic that oil inlet 4 got into can flow to the helicla flute 23 in along recess 32, fluid is difficult for producing in recess 32 to remain, when the recess 32 of ensureing to be equipped with fluid rotates to the one side that is close to with the inner wall of through-hole 11, the inner wall of through-hole 11 can produce the extrusion to fluid and make fluid flow into to the helicla flute 23 smoothly.

Or, in this embodiment, can also set up first cooperation structure into protruding structure, and second cooperation structure sets up to the groove structure, and the groove structure is located between two adjacent recesses 32, can realize through the cooperation of protruding structure and groove structure that the cover 2 drives the axis of rotation 3 and rotates. And the protrusion 31 formed between two adjacent grooves 32 is used as the second matching structure, so that the whole structure can be simplified and the oil receiving area of the grooves 32 can be ensured.

Further, the number of recess 32 and cooperation groove 22 is three, and the same quantity of arch 31 also is three, and after the one end of axis of rotation 3 passed through-hole 11, three arch 31 and three cooperation groove 22 one-to-one ground cooperation, the rotating sleeve 2 can drive axis of rotation 3 and rotate. Or, in this embodiment, can also all set up recess 32 and cooperation groove 22 to two, or all set up to four, through two arch 31 and two cooperation grooves 22 cooperations, perhaps through four arch 31 and four cooperation grooves 22 cooperations to realize rotating sleeve 2 and drive axis of rotation 3 and rotate all can, and all set up recess 32 and the quantity of cooperation groove 22 when three, can be when guaranteeing overall structure stability, simplify overall structure, reduce the processing cost.

As shown in fig. 3 and 7, the section of the rotating shaft 3 is similar to a triangular structure, and the depth of the groove 22 is shallow due to the smooth transition arrangement of the groove 22, so that the cross-sectional area of the rotating shaft 2 is ensured, and the structural strength thereof is ensured.

In the above embodiment, the rotating sleeve 2 is provided with the connecting cylinder 24 towards one end of the fixing member 1, the connecting cylinder 24 is sleeved outside the fixing member 1, so that the relative positions of the through hole 11 and the central hole 21 are convenient to ensure, and due to the fact that the two are not coaxial, in the installation process, the relative position between the two is convenient to find, and the installation efficiency is improved. Moreover, the connecting cylinder 24 is sleeved outside the fixing piece 1, so that the situation that the oil liquid is thrown out of the rotating shaft 3 in the rotating process and cannot enter the spiral groove 23 can be avoided.

Further, the fixing member 1 includes a fixing section 12 and a connecting section 13, the connecting section 13 is disposed toward one side of the rotating sleeve 2, the through hole 11 penetrates through the fixing section 12 and the connecting section 13, and the connecting cylinder 24 is sleeved outside the connecting section 13. The connection section 13 is arranged to be matched with the connection cylinder 24, and meanwhile, the connection section is fixed with the shell 20 through the fixing section 12, so that interference is avoided.

In the above embodiment, the through hole 11 of the fixing member 1 is an eccentric hole passing through the connecting section 13, or the through hole 11 may be set as a large hole (not eccentrically disposed) having an inner diameter larger than the outer diameter of the rotating shaft 3, so that the rotating shaft 3 can be close to the inner wall of one side of the through hole 11, and the oil inlet 4 is formed on the other side, and the arrangement of the eccentric hole can reduce the aperture of the through hole 11 while being in a sleeved fit with the connecting cylinder 24 and the connecting section 13, thereby reducing the size of the connecting section 13, and providing good economical efficiency.

In the above embodiment, the end of the rotating shaft 3 away from the fixing member 1 is further provided with the mounting head 33 for mounting the rotating shaft 3, the mounting head 33 is arranged to facilitate mounting of the rotating shaft 3, as shown in fig. 1, the mounting head 33 is mounted on the side wall of the housing 20 and the rotating head can be rotatably connected with respect to the housing 20, so that the position of the rotating shaft 3 is more stable, and the situation that the position of the end of the rotating shaft away from the rotating sleeve 2 is deviated after long-term use, which causes the size change of the oil inlet 4 to affect the lubricating effect is avoided.

In the above embodiment, the transmission further includes the oil guiding member 50, the oil guiding member 50 includes the conical barrel 501 sleeved outside the rotating shaft 3 and located at the oil inlet 4, the conical barrel 501 includes a large diameter end and a small diameter end, wherein the small diameter end is disposed toward one side of the through hole 11, i.e., toward the oil inlet 4, and the large diameter end is disposed away from one side of the oil inlet 4, so as to guide the oil splashed to the inner wall of the housing 20 into the groove 32.

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 improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A lubrication device for a gearbox, comprising:

the fixing piece (1) is provided with a through hole (11);

the rotating sleeve (2) can rotate along with a rotating piece (30) of the gearbox, a central hole (21) is formed in the rotating sleeve (2) in the axial direction, the central hole (21) is not coaxial with the through hole (11), and a first matching structure and a spiral groove (23) are formed in the inner wall of the central hole (21);

the outer wall of the rotating shaft (3) is provided with a second matching structure and a groove (32) arranged along the axial direction, the rotating shaft (3) can penetrate through the through hole (11) to the center hole (21), and after the first matching structure is matched with the second matching structure, the rotating shaft (3) can coaxially rotate with the rotating sleeve (2);

the rotating shaft (3) is close to one side wall of the through hole (11), an oil inlet (4) is formed between the rotating shaft (3) and the other side wall of the through hole (11) far away from the rotating shaft, oil can enter the groove (32) along the oil inlet (4), and the oil can rotate to the spiral groove (23) along the rotating shaft (3) and is discharged to a part to be lubricated of the gearbox along the central hole (21).

2. The lubrication device of the gearbox according to claim 1, wherein the grooves (32) are arc-shaped grooves with smooth transition of side walls and bottom walls, and the protrusions (31) formed between two adjacent grooves (32) are the second matching structures, and the first matching structures are the matching grooves (22) matched with the protrusions (31).

3. Lubrication device for a gearbox according to claim 2, characterised in that the number of recesses (32) and mating grooves (22) is three each.

4. The lubrication device of the gearbox according to any one of claims 1 to 3, wherein a connecting cylinder (24) is arranged at one end of the rotating sleeve (2) facing the fixed part (1), and the connecting cylinder (24) is sleeved outside the fixed part (1).

5. The lubrication device of the gearbox according to claim 4, wherein the fixing member (1) comprises a fixing section (12) and a connecting section (13), the connecting section (13) is arranged towards one side of the rotating sleeve (2), the through hole (11) penetrates through the fixing section (12) and the connecting section (13), and the connecting cylinder (24) is sleeved outside the connecting section (13).

6. Lubrication device for a gearbox according to claim 5, characterised in that said through hole (11) is an eccentric hole through said connection section (13).

7. A lubrication device for a gearbox according to any one of claims 1-3, characterised in that the end of the rotating shaft (3) remote from the stationary part (1) is further provided with a mounting head (33) for mounting the rotating shaft (3).

8. Gearbox, characterized in that it comprises a housing (20), a rotating member (30) arranged in said housing (20), a component to be lubricated and a lubricating apparatus (10) according to any one of claims 1-7;

the fixing piece (1) is fixed with the shell (20);

the rotating part (30) can drive the rotating sleeve (2) to rotate, an oil inlet (4) of the lubricating device (10) faces the side wall of the shell (20), and oil splashed to the side wall of the shell (20) can enter from the oil inlet (4) and flow to the part to be lubricated.

9. The gearbox according to claim 8, characterized by further comprising an oil guiding member (50), wherein the oil guiding member (50) comprises a conical barrel (501) sleeved outside the rotating shaft (3) and located at the oil inlet (4), a small diameter end of the conical barrel (501) is arranged towards the oil inlet (4), and a large diameter end of the conical barrel (501) is arranged at a side far away from the oil inlet (4).