CN218669498U - Flow guide structure of lubricating oil in engine - Google Patents

Abstract

The utility model provides a water conservancy diversion structure of lubricating oil in engine belongs to engine technical field. The problem that the lubricating effect of the auxiliary shaft in the existing engine is low is solved. This water conservancy diversion structure of lubricating oil in engine, the engine includes the casing, the countershaft of bearing and tip support in the casing through the bearing, this water conservancy diversion structure is including the guide plate that is used for sheltering from the clearance between the inner circle of bearing and the outer lane, the guide plate still has and is platelike water conservancy diversion portion, the bearing has inner circle and outer lane, the tip of outer lane has along the protruding spacing fender shoulder that forms of countershaft axial, the outer border circumference of water conservancy diversion portion protruding formation set up in spacing fender shoulder and with the lateral wall interference fit's of spacing fender shoulder sealing ring. This water conservancy diversion structure of lubricating oil in engine has promoted the lubricating oil inlet quantity in the engine countershaft, further has promoted the lubricated effect of countershaft.

Description

Flow guide structure of lubricating oil in engine

Technical Field

The utility model belongs to the technical field of the engine, a water conservancy diversion structure of lubricating oil in engine is related to.

Background

In the engine, lubricating oil in the shell needs to be supplied to the rotating shaft and thrown out of the gear through rotation of the rotating shaft, so that a certain lubricating effect is achieved, but when the rotating shaft of the engine rotates at a high speed, lubricating oil flowing out of an oil passage in the box body enters the rotating shaft through the bearing chamber, and the oil easily flows out of a gap between the bearing and the end part of the rotating shaft, so that less liquid flows into the rotating shaft, less lubricating oil flows out of the rotating shaft onto the gear, and a better lubricating effect cannot be achieved.

In view of the above problems, various lubricating oil supply structures for transmissions have been developed: as in chinese patent application [ grant publication No.: CN 103133668B discloses a lubricating oil supply structure for a transmission, comprising a housing of the transmission, a rotary shaft, an end of the rotary shaft rotatably supported in the housing via a bearing, a hollow lubricating oil supply hole extending in an axial direction in the rotary shaft, a bolt for attaching the bearing to an end of an output shaft, and a guide member for supplying lubricating oil introduced from a lubricating oil introduction path from an opening portion to the lubricating oil supply hole, the lubricating oil introduction path being arranged along an inner surface of the housing, the guide plate having a plate-shaped plate portion and a cylindrical tube portion, the plate portion being integrally formed with the tube portion, the plate portion being provided between the inner surface of the housing and the end of the rotary shaft and the bearing, the tube portion being integrally arranged inside a hollow portion of the bolt, and a spacer for fixing the guide plate in the recess by sandwiching an outer periphery of the plate portion between an outer ring of the bearing and a step portion of a recess provided on an outer periphery of the bottom surface.

The structure is that the guide plate is additionally arranged to guide the lubricating oil entering the rotating shaft from the bearing chamber, but the guide plate does not rotate along with the rotating shaft, so the guide plate needs to be fixed, and the structure can be clearly known from the specification attached figure 3 and the specification attached figure 4 of the application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a water conservancy diversion structure of lubricating oil in the engine, the utility model aims to solve the technical problem that: how to solve the problem that the lubricating effect of the internal countershaft of the existing engine is lower.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a water conservancy diversion structure of lubricating oil in engine, the engine includes that casing, bearing and tip pass through the countershaft that the bearing supported in the casing, and this water conservancy diversion structure is including the guide plate that is used for sheltering from the clearance between the inner circle of bearing and the outer lane, the guide plate still has and is platelike water conservancy diversion portion, the bearing has inner circle and outer lane, a serial communication port, the tip of outer lane has along the protruding spacing shoulder that keeps off that forms of countershaft axial, the outer edge of water conservancy diversion portion is protruding to form to set up in spacing shoulder that keeps off and with the lateral wall interference fit's of spacing shoulder sealing ring.

Through being provided with the guide plate, the guide plate can lead the lubricating oil that the oil duct of casing flows, the outer border circumference of water conservancy diversion portion is protruding the sealing ring that forms, the sealing ring is through the spacing fender shoulder interference fit with the outer lane, realized being connected with the outer lane that the guide plate is firm, make the guide plate and bearing inner race realize circumference and axial location give, and the guide plate can not rotate along with the rotation of countershaft, make the guide plate more stable with outer lane interference fit, shelter from bearing inner circle and outer lane and countershaft's tip through the guide plate, make lubricating oil enter into the in-process of countershaft at the oil tank from the casing, lubricating oil can be stable directly channel into the inner chamber of countershaft through the guide plate, thereby make the volume of the lubricating oil that enters into the countershaft intracavity than many, thereby the lubricating oil input of engine countershaft has been promoted, further promotion the lubricated effect of countershaft.

In the above-described structure for guiding lubricating oil in an engine, an end surface of the guide portion is attached to an end surface of the outer ring.

The end face of the flow guide part is attached to the end face of the outer ring, so that axial limitation to the flow guide plate is achieved, axial displacement of the flow guide plate when the flow guide plate is used is avoided, flow guide stability of the flow guide plate is further improved, and lubrication of the auxiliary shaft is more stable.

In the above-mentioned guide structure of lubricating oil in the engine, an installation gap is provided between the end surfaces of the shell and the outer ring, and a relief gap is provided between the end surfaces of the shell and the sealing ring.

The setting in installation clearance and the clearance of stepping down for the terminal surface of outer lane and the terminal surface of sealing ring all not with the casing contact, do not have the cooperation structure when the sealing ring installation with between the casing, but directly can on the outer lane through interference fit, make the installation of sealing ring simple, and can play better water conservancy diversion effect.

In the above-mentioned flow guide structure for lubricating oil in an engine, the axial distance between the housing and the end face of the limiting shoulder is smaller than the axial distance between the housing and the end face of the sealing ring.

The arrangement of the structure ensures that the end face of the sealing ring is positioned in the outer ring, so that the contact between the sealing ring and the shell is reduced, the whole structure of the shell does not need to be improved for assembling the guide plate, the guide plate can be assembled only by improving the smaller part of the bearing, the whole change structure of the engine is smaller, and the change cost of the engine is reduced.

In the aforesaid water conservancy diversion structure of lubricating oil in engine, water conservancy diversion portion has the portion of stepping down of buckling towards the bearing, the terminal surface of the portion of stepping down leans on with the terminal surface of outer lane, the outer border and the sealing ring circular arc transition of the portion of stepping down, the portion of stepping down is enclosed with the sealing ring and is formed the chamber of stepping down.

The setting of the portion of stepping down has realized the axial positioning to the guide plate, can flow the intracavity of stepping down after the lubricating oil of the oil duct of casing flows out, the setting in chamber of stepping down for lubricating oil can partly collect the intracavity of stepping down, plays the effect of stepping down, makes lubricating oil have certain persistence space.

In the above-mentioned water conservancy diversion structure of lubricating oil in the engine, the guide plate still has the pipe portion that is the tube-shape, the pipe portion stretches into in the inner chamber of countershaft, have the space between the outer wall of pipe portion and the inner chamber wall of countershaft.

The setting of pipe portion can play better water conservancy diversion effect to through the setting in space, make countershaft and water conservancy diversion board mutually not influence, promoted the stability of water conservancy diversion structure water conservancy diversion.

Compared with the prior art, the utility model has the advantages of: the guide plate is stable with outer lane interference fit, shelter from the tip of bearing inner circle and outer lane and countershaft through the guide plate for lubricating oil is entering into the in-process of countershaft from the oil duct of casing, and lubricating oil can be stable directly introduces into the inner chamber of countershaft through the guide plate, thereby makes the volume of entering into the lubricating oil of countershaft intracavity more, thereby has promoted the lubricating oil feed volume in the engine countershaft, further promotion the lubricated effect of countershaft.

Drawings

Fig. 1 is a schematic structural diagram of the assembled structure of the present invention.

Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of the middle deflector of the present invention.

In the figure, 1, a housing; 2. a bearing; 21. an outer ring; 21a, a limiting stop shoulder; 22. an inner ring; 3. a counter shaft; 31. an inner cavity; 32. mounting grooves; 4. a baffle; 41. a flow guide part; 41a, a yield part; 42. a tube portion; 43. a seal ring; 44. a yielding cavity; 5. a void; 6. a mounting gap; 7. a abdication gap; 8. a support pad.

Detailed Description

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

As shown in fig. 1 to 3, the structure for guiding the lubricant in the engine, the engine includes a housing 1, a bearing 2, and a secondary shaft 3 whose end is supported in the housing 1 by the bearing 2, the structure includes a baffle 4 for blocking a gap between an inner ring 22 and an outer ring 21 of the bearing 2, and the bearing 2 has the inner ring 22 and the outer ring 21. The bearing 2 is a needle bearing 2.

Specifically, as shown in fig. 1 to 4, the baffle 4 further includes a plate-shaped flow guiding portion 41 and a tubular pipe portion 42, the pipe portion 42 extends into the inner cavity 31 of the auxiliary shaft 3, a gap 5 is provided between an outer wall of the pipe portion 42 and an inner cavity wall of the auxiliary shaft 3, an end portion of the outer ring 21 is provided with a limit shoulder 21a formed by protruding in an axial direction of the auxiliary shaft 3, an outer edge of the flow guiding portion 41 circumferentially protrudes to form a sealing ring 43 which is arranged in the limit shoulder 21a and is in interference fit with a side wall of the limit shoulder 21a, and an end surface of the flow guiding portion 41 abuts against an end surface of the outer ring 21.

By arranging the guide plate 4, the guide plate 4 can guide the lubricating oil flowing out of the oil duct of the shell 1, the outer edge of the flow guide part 41 is provided with the sealing ring 43 which is formed by protruding in the circumferential direction, the sealing ring 43 is in interference fit with the limit shoulder 21a of the outer ring 21, the guide plate 4 is stably connected with the outer ring 21, the end surface of the guide plate 4 abuts against the end surface of the limit shoulder 21a, the guide plate 4 is prevented from moving axially due to the axial impact force on the guide plate 4 in the lubricating oil flow guide process, and the guide plate 4 cannot rotate along with the rotation of the auxiliary shaft 3, so that the guide plate 4 is more stably in interference fit with the outer ring 21, the guide plate 4 shields the inner ring 22 and the outer ring 21 of the bearing 2 and the end part of the auxiliary shaft 3, the lubricating oil can be stably and directly guided into the inner cavity 31 of the auxiliary shaft 3 through the guide plate 4 in the oil duct of the shell 1, the amount of the lubricating oil entering the inner cavity 31 of the auxiliary shaft 3 is larger, the lubricating oil entering the auxiliary shaft 3 is increased, and the lubricating effect of the auxiliary shaft 3 is further improved.

As shown in fig. 1-3, a mounting gap 6 is provided between the end surfaces of the housing 1 and the outer ring 21, a relief gap 7 is provided between the end surfaces of the housing 1 and the sealing ring 43, an axial distance between the housing 1 and the end surface of the limiting shoulder 21a is smaller than an axial distance between the housing 1 and the end surface of the sealing ring 43, an annular mounting groove 32 is provided on the outer side wall of the auxiliary shaft 3, the bearing 2 is partially disposed in the mounting groove 32, a supporting pad 8 is provided between the bottom of the mounting groove 32 and the bottom of the bearing 2, and the outer ring 21 abuts against the supporting pad 8.

The design of supporting pad 8 and mounting groove 32 for the installation of bearing 2 is more convenient, and has realized spacing to the axial of outer lane 21 through setting up of supporting pad 8.

As shown in fig. 3 and 4, the flow guide portion 41 has a relief portion 41a bent toward the bearing 2, an end surface of the relief portion 41a abuts against an end surface of the outer ring 21, an outer edge of the relief portion 41a is in arc transition with the seal ring 43, and the relief portion 41a and the seal ring 43 surround to form a relief cavity 44.

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

Claims (6)

1. The utility model provides a water conservancy diversion structure of lubricating oil in engine, the engine includes casing (1), bearing (2) and tip and passes through countershaft (3) that bearing (2) supported in casing (1), and this water conservancy diversion structure is including guide plate (4) that is used for sheltering from the clearance between inner circle (22) and outer lane (21) of bearing (2), guide plate (4) still have and are platelike water conservancy diversion portion (41), bearing (2) have inner circle (22) and outer lane (21), characterized in that, the tip of outer lane (21) has along countershaft (3) axial bulge formation spacing fender shoulder (21 a), the outer border circumference of water conservancy diversion portion (41) is protruding to form and sets up in spacing fender shoulder (21 a) and with the lateral wall interference fit's of spacing fender shoulder (21 a) sealing ring (43).

2. The structure for guiding lubricating oil in an engine according to claim 1, wherein an end surface of the guide portion (41) abuts against an end surface of the outer ring (21).

3. The structure for guiding lubricating oil in an engine according to claim 1, wherein a mounting gap (6) is provided between the end surfaces of the housing (1) and the outer ring (21), and a relief gap (7) is provided between the end surfaces of the housing (1) and the seal ring (43).

4. The flow guide structure for lubricating oil in an engine according to claim 3, wherein the axial distance between the housing (1) and the end face of the limit stop shoulder (21 a) is smaller than the axial distance between the housing (1) and the end face of the seal ring (43).

5. The structure of guiding lubricating oil in an engine according to any one of claims 1-4, characterized in that the guiding portion (41) has a relief portion (41 a) that bends toward the bearing (2), the end surface of the relief portion (41 a) abuts against the end surface of the outer ring (21), the outer edge of the relief portion (41 a) is in arc transition with a sealing ring (43), and the relief portion (41 a) and the sealing ring (43) surround to form a relief cavity (44).

6. The structure for guiding lubricating oil in an engine according to any one of claims 1 to 4, wherein the deflector (4) further has a tubular pipe portion (42), the pipe portion (42) extends into the inner cavity (31) of the secondary shaft (3), and a gap (5) is provided between the outer wall of the pipe portion (42) and the inner cavity wall of the secondary shaft (3).

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