CN115234638A

CN115234638A - Engine bearing lubricating structure

Info

Publication number: CN115234638A
Application number: CN202210921780.8A
Authority: CN
Inventors: 吴萍辉; 张林江; 陈明明; 杨通照; 郑林
Original assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Current assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-10-25
Anticipated expiration: 2042-08-02
Also published as: WO2024027441A1; CN115234638B

Abstract

The invention provides a bearing lubricating structure of an engine, and belongs to the technical field of bearing lubrication. It has solved the poor problem of current bearing lubrication structure lubrication effect. This engine includes the box, has the bearing hole seat that is used for installing the bearing in the box wall, and lubricating structure is including the oil storage chamber that is arranged in the box wall and leading the oilhole, and the oil storage chamber has the opening that the fuel feeding drips and get into, and the bottom of vertical direction is followed through keeping off the shutoff of oil piece to the opening, leads the one end and the oil storage chamber of oilhole and is linked together, and the other end is linked together with the bearing cavity that the bearing hole seat encloses. This engine bearing lubricating structure has lubricated effectual advantage.

Description

Engine bearing lubricating structure

Technical Field

The invention belongs to the technical field of bearing lubrication, and relates to an engine bearing lubricating structure.

Background

The bearing lubrication mode comprises forced lubrication and non-forced lubrication, wherein the forced lubrication mode needs to arrange an oil duct in the box body, engine oil enters the oil duct in the box body through the engine oil pump, the engine oil in the oil duct enters the bearing mounting hole of the box body again to lubricate the bearing, and the non-forced lubrication mode lubricates the bearing by utilizing the engine oil which splashes and is accumulated on the inner wall of the box body and flows into the bearing.

For example, chinese patent literature discloses a bearing lubrication structure for a gear shaft end of an engine [ application No.: 200710093001.5; publication No.: CN101158300A ], a radial oil groove is arranged at the inner end of a bearing outer ring for mounting a gear shaft, a radial groove communicated with the radial oil groove on the bearing is arranged on a bearing hole seat for mounting the bearing on the inner wall of the engine box body, two reinforcing ribs and the bearing hole seat are arranged on the inner wall of the engine box body to enclose a wall cavity for accumulating splashed oil drops, and the radial groove on the bearing hole seat is communicated with the lowest position in the wall cavity.

In the lubricating structure with the structure, the radial oil groove is required to be arranged at the inner end of the outer ring of the bearing, namely the structure of the bearing is required to be changed; simultaneously the lubricating structure of this kind of structure, footpath oil groove are located the outside, and when the oil in the wall chamber passed through footpath oil groove, can directly flow back to the position of box oil storage through the notch of footpath oil groove, there was the problem of hourglass in the oil in the wall chamber, and this part oil did not play lubricated effect to the bearing, and the oil mass of oil flow in the wall chamber to the bearing diminishes to make the bearing can not get sufficient lubricating oil and lubricate, lead to the lubricated effect of bearing poor.

Disclosure of Invention

The invention aims to provide an engine bearing lubricating structure aiming at the problems in the prior art, and solves the technical problem of how to improve the lubricating effect of a bearing.

The purpose of the invention can be realized by the following technical scheme: the utility model provides an engine bearing lubricating structure, engine include the box, have the bearing hole seat that is used for installing the bearing in the box wall, a serial communication port, lubricating structure is including the oil storage chamber that is arranged in the box wall and leading the oilhole, the oil storage chamber has the opening that the fuel feeding drips the entering, the opening is passed through the shutoff of fender oil block along the bottom of vertical direction, the one end and the oil storage chamber of leading the oilhole are linked together, and the other end is linked together with the bearing hole seat bearing chamber that encloses.

The inside oil that splashes of box drips and enters into the oil storage chamber through the opening in, keeps off oil piece shutoff oil storage chamber open-ended bottom, makes the oil that enters into in the oil storage chamber drip not outer hourglass, guarantees that all oil drips that enter into in the oil storage chamber all flow into the bearing chamber through leading the oilhole, guarantees to have sufficient lubricating oil to play lubricated effect to the bearing, improves the lubricated effect of bearing, makes the bearing can not damage. The oil blocking block is independently arranged, so that the box body is convenient to demould during processing, and meanwhile, the lubricating structure is simple in structure and does not need to be specially provided with a lubricating oil passage aiming at the bearing.

In an engine bearing lubricating structure of the above, a rotatable bevel gear is arranged in the housing, the bevel gear is located right below an opening of the oil storage cavity in the vertical direction, the center line of the bevel gear is perpendicular to the direction of the opening of the oil storage cavity, and oil drops rotationally thrown by the bevel gear can enter the oil storage cavity through the opening. Bevel gear rotation can drive lubricating oil, and bevel gear can throw away lubricating oil along tangential direction and form oil and drip under the effect of centrifugal force, and oil drips can get rid of the oil storage chamber through the opening in, and the oil that drips in the oil storage chamber flows to the bearing chamber through the water conservancy diversion hole, guarantees the lubricated effect of bearing.

In foretell engine bearing lubricating structure, keep off the oil piece including the embedding part and the fender oil portion of integrative setting, the top that keeps off oil portion is located the top of embedding part along vertical direction, embedding part embedding and sealed bottom of fixing in the oil storage chamber, keep off oil portion and the sealed laminating in chamber wall in the oil storage chamber of opening along vertical direction bottom department. This kind of structure improves the sealing area who keeps off the oil piece, guarantees to enter into the oil drip in the oil storage chamber and does not expose, and the top that keeps off oil portion is located the top of embedding portion along vertical direction, guarantees to keep off the oil piece and can keep off oil drip in the oil storage chamber, makes the oil drip that enters into the oil storage chamber can only enter into the bearing chamber through leading the oilhole, improves the lubricated effect of bearing.

In the above lubricating structure for the engine bearing, the opening is arranged along the edge of the outer side of the bearing hole seat, and the length of the oil baffle part along the opening direction is 1/4-1/2 of the length of the opening. This kind of structure makes being close to the bearing more in the oil storage chamber, makes this lubricating structure compact structure, reduces the space that this lubricating structure occupied, makes and keeps off oily portion and can block the oil drip in the oil storage chamber and not leak outward, and can not hinder oil drip to enter into the oil storage chamber.

In foretell engine bearing lubricating structure, the stopper that the protrusion set up has on the chamber wall in oil storage chamber, keep off oil portion and lean on the stopper, embedding portion lies in the below of stopper along vertical direction. The setting of stopper plays the effect that blocks, prevents to keep off the interior concave yield of oil block and goes into the oil storage chamber, makes the oil block installation target in place, makes the oil drip in the oil storage chamber not expose, improves the lubricated effect of bearing.

In foretell engine bearing lubricating structure, the box includes first casing and second casing, the oil storage chamber is located first casing, the border department that the second casing is close to first casing has the compact heap of protrusion setting, works as first casing and second casing pass through the fastener laminating and link firmly, the compact heap compresses tightly on the oil blocking piece. The compressing block plays a role in compressing, the oil blocking block is prevented from falling out of the oil storage cavity, the oil blocking block is installed in place, oil drops in the oil storage cavity are not exposed, and the lubricating effect of the bearing is improved.

In the lubricating structure for the engine bearing, the middle of the cavity bottom of the bearing cavity for the bearing to abut against is provided with a concave transition cavity, and the oil guide hole is communicated with the transition cavity. This kind of structure makes during oil drips in the oil storage chamber enters into the transition chamber through leading the oilhole, and the setting up of transition chamber makes all oil drips all need just can get back to the oil storage position of box through the gap of bearing or bearing and axle, makes all oil drips in the oil storage chamber all play the lubricated effect to the bearing, improves lubricating structure's lubricated effect.

In the above lubricating structure for the engine bearing, the section of the transition cavity along the radial direction of the bearing hole seat is circular, and the inner diameter of the transition cavity is smaller than or equal to the inner diameter of the bearing inner ring. The setting of transition chamber can not reduce the axial area of supporting of bearing, can not reduce the stability of bearing.

In the above lubricating structure for the engine bearing, the lubricating structure further includes a wall cavity recessed in the case and a plurality of oil passing grooves recessed in the outer end face of the bearing hole seat, the wall cavity is arranged around the outer side edge of the bearing hole seat, and two ends of the oil passing grooves respectively penetrate through the inner circumferential surface and the outer circumferential surface of the bearing hole seat. The wall cavity and the oil passing groove play a role in further lubrication, so that oil drops positioned at the circumferential edge of the bearing hole seat flow to the bearing as much as possible, and the lubrication effect of the bearing is improved.

In foretell engine bearing lubricating structure, lubricating structure still includes the oil filler point that runs through in the box, the inner and the oil storage chamber of oil filler point are linked together, and the box is run through to the outer end, the shutoff of end cap detachable is passed through to the outer end of oil filler point, the central axis of oil filler point coincides mutually with the central axis of leading the oilhole. Lubricating oil can be injected inwards through the oil injection hole when necessary, so that the oil storage cavity and the transition cavity are ensured to have enough lubricating oil, and the lubricating effect of the bearing is ensured; meanwhile, the oil guide hole is formed, so that the oil guide hole is convenient to process.

Compared with the prior art, the lubricating structure for the engine bearing provided by the invention has the following advantages:

1. this lubricating structure makes the oil that is got rid of in the oil storage chamber not leak outward through setting up the oil blocking piece, guarantees to have enough oil to drip through leading oilhole flow direction bearing chamber, plays lubricated effect to the bearing, improves the lubricated effect of bearing, makes the bearing can not damage.

2. The setting of this lubricating structure oil baffle piece makes the box add the mould convenient that moves back during processing, and this lubricating structure need not to set up the lubricating oil duct to the bearing specially simultaneously, makes this lubricating structure simple structure.

Drawings

Fig. 1 is a view showing a state of use of the present engine bearing lubrication structure.

Fig. 2 is a schematic view of the entire structure of the present bearing lubrication structure.

Fig. 3 is a schematic overall structure diagram of the bearing lubrication structure without the oil blocking block.

Fig. 4 is a schematic overall structure diagram of the oil baffle block of the bearing lubrication structure.

Fig. 5 is an exploded view of the present engine case.

In the figure, 1, a box body; 101. a first housing; 102. a second housing; 2. a bearing; 3. a bearing bore seat; 31. a bearing cavity; 4. an oil storage chamber; 41. an opening; 5. an oil guide hole; 6. an oil blocking block; 61. an insertion section; 62. an oil retaining portion; 7. a limiting block; 8. a compression block; 9. a transition chamber; 10. a wall cavity; 11. an oil passing groove; 12. an oil filler hole; 13. a plug; 14. a bevel gear.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the engine comprises a box body 1, a bearing hole seat 3 for installing a bearing 2 is arranged in the wall of the box body 1, and the lubricating structure comprises an oil storage cavity 4 and an oil guide hole 5 which are arranged in the wall of the box body 1, a wall cavity 10 which is concavely arranged in the box body 1, an oil passing groove 11 which is concavely arranged on the outer end surface of the bearing hole seat 3 and an oil filling hole 12 which penetrates through the shell.

The oil storage tank is characterized in that a rotatable bevel gear 14 is arranged in the tank body 1, the bevel gear 14 is located right below an opening 41 of the oil storage chamber 4 in the vertical direction, the oil storage chamber 4 is provided with an opening 41 for splashed oil drops to enter, the center line of the bevel gear 14 is perpendicular to the direction of the opening 41 of the oil storage chamber 4, the oil drops thrown by the rotation of the bevel gear 14 can enter the oil storage chamber 4 through the opening 41, one end of the oil guide hole 5 is communicated with the bottom of the oil storage chamber 4, and the other end of the oil guide hole is communicated with a bearing chamber 31 enclosed by the bearing hole seat 3. An opening 41 of the oil storage cavity 4 is arranged along the edge of the outer side of the bearing hole seat 3, and the bottom of the opening 41 in the vertical direction is sealed by the oil blocking block 6. Specifically, as shown in fig. 4, the oil blocking block 6 includes an embedded portion 61 and an oil blocking portion 62 that are integrally provided, a top portion of the oil blocking portion 62 is located above the embedded portion 61 along the vertical direction, the embedded portion 61 is embedded and hermetically fixed in the oil storage chamber 4, and the oil blocking portion 62 is in sealing fit with a chamber wall of the oil storage chamber 4 at the bottom of the opening 41 along the vertical direction. In this embodiment, the length of the oil blocking portion 62 along the direction of the opening 41 is 1/3 of the length of the opening 41, and in actual production, the length of the oil blocking portion 62 along the direction of the opening 41 is 1/4 or 1/2 of the length of the opening 41.

The limiting block 7 which is convexly arranged is arranged on the cavity wall of the oil storage cavity 4, the oil blocking part 62 is abutted against the limiting block 7, and the embedding part 61 is located below the limiting block 7 in the vertical direction. As shown in fig. 5, the tank 1 includes a first casing 101 and a second casing 102, the oil storage chamber 4 is located in the first casing 101, a protruding pressing block 8 is provided at a position of the second casing 102 close to an edge of the first casing 101, and when the first casing 101 and the second casing 102 are attached to each other by a fastener such as a bolt, the pressing block 8 abuts against the oil blocking block 6.

The wall cavity 10 is arranged around the outer side edge of the bearing hole seat 3, and two ends of the oil passing groove 11 respectively penetrate through the inner circumferential surface and the outer circumferential surface of the bearing hole seat 3. The inner end of the oil filling hole 12 is communicated with the oil storage cavity 4, the outer end of the oil filling hole penetrates through the box body 1, the outer end of the oil filling hole 12 is detachably plugged through a plug 13, and the central axis of the oil filling hole 12 coincides with the central axis of the oil guide hole 5. The bearing cavity 31 is provided with a concave transition cavity 9 at the middle of the cavity bottom for the bearing 2 to abut against, and the oil guide hole 5 is communicated with the transition cavity 9. The section of the transition cavity 9 along the radial direction of the bearing hole seat 3 is circular, in this embodiment, the inner diameter of the transition cavity 9 is equal to the inner diameter of the inner ring of the bearing 2, and in the actual production, the inner diameter of the transition cavity 9 can be smaller than the inner diameter of the inner ring of the bearing 2.

During operation, the bevel gear 14 rotates to drive the lubricating oil and throw the lubricating oil into oil drops, and part of the oil drops enter the oil storage cavity 4 through the opening 41, then flow to the transition cavity 9 through the oil guide hole 5 and flow to the bearing cavity 31, so that the bearing 2 is lubricated, and the bearing 2 is lubricated from inside to outside. In the process, part of the lubricating oil flows into the wall cavity 10 and then enters the bearing cavity 31 through the oil groove 11 to lubricate the bearing 2, namely, the bearing 2 from outside to inside. The lubricant oil finally flows into the interior of the casing 1 to form a circulation.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the box body 1, the first housing 101, the second housing 102, the bearing 2, the bearing hole seat 3, the bearing cavity 31, the oil storage cavity 4, the opening 41, the oil guide hole 5, the oil blocking block 6, the embedding part 61, the oil blocking part 62, the limiting block 7, the pressing block 8, the transition cavity 9, the wall cavity 10, the oil passing groove 11, the oil filling hole 12, the plug 13, the bevel gear 14, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides an engine bearing lubricating structure, engine include box (1), bearing hole seat (3) that are used for installing bearing (2) have in box (1) wall, a serial communication port, lubricating structure is including oil storage chamber (4) and oil guide hole (5) that are located box (1) wall, oil storage chamber (4) have opening (41) that the fuel feeding drips the entering, oil baffle block (6) shutoff is passed through along vertical direction's bottom in opening (41), the one end and the oil storage chamber (4) of oil guide hole (5) are linked together, and the other end is linked together with bearing hole seat (3) bearing chamber (31) of enclosing.

2. The lubricating structure for the bearing of the engine as claimed in claim 1, wherein the box body (1) is provided with a rotatable bevel gear (14), the bevel gear (14) is located right below the opening (41) of the oil storage chamber (4) along the vertical direction, the center line of the bevel gear (14) is perpendicular to the opening (41) of the oil storage chamber (4), and oil drops which are rotationally whipped by the bevel gear (14) can enter the oil storage chamber (4) through the opening (41).

3. The engine bearing lubrication structure according to claim 1 or 2, wherein the oil baffle block (6) comprises an embedded portion (61) and an oil baffle portion (62) which are integrally arranged, the top of the oil baffle portion (62) is located above the embedded portion (61) along the vertical direction, the embedded portion (61) is embedded and hermetically fixed at the bottom of the oil storage cavity (4), and the oil baffle portion (62) is hermetically attached to the cavity wall of the oil storage cavity (4) at the bottom of the opening (41) along the vertical direction.

4. An engine bearing lubrication structure according to claim 3, wherein the opening (41) is provided along the edge of the outside of the bearing bore seat (3), and the length of the oil dam (62) in the direction of the opening (41) is 1/4-1/2 of the length of the opening (41).

5. The engine bearing lubrication structure according to claim 3, wherein a protruding limiting block (7) is provided on the wall of the oil storage chamber (4), the oil blocking portion (62) abuts against the limiting block (7), and the embedded portion (61) is located below the limiting block (7) in the vertical direction.

6. The engine bearing lubrication structure according to claim 1 or 2, wherein the box body (1) comprises a first shell (101) and a second shell (102), the oil storage cavity (4) is located in the first shell (101), the edge of the second shell (102) close to the first shell (101) is provided with a protruding pressing block (8), and when the first shell (101) and the second shell (102) are fixedly connected through a fastener, the pressing block (8) is pressed on the oil blocking block (6).

7. The engine bearing lubricating structure according to claim 1 or 2, characterized in that the bearing cavity (31) has a recessed transition cavity (9) in the middle of the cavity bottom for bearing (2) to abut against, and the oil guide hole (5) is communicated with the transition cavity (9).

8. An engine bearing lubrication structure according to claim 7, characterised in that the transition chamber (9) is circular in cross-section in the radial direction of the bearing bore seat (3), the inner diameter of the transition chamber (9) being smaller than or equal to the inner diameter of the inner ring of the bearing (2).

9. The lubricating structure for the engine bearing, according to claim 1 or 2, is characterized in that the lubricating structure further comprises a wall cavity (10) concavely arranged in the box body (1) and a plurality of oil passing grooves (11) concavely arranged on the outer end face of the bearing hole seat (3), the wall cavity (10) is arranged around the outer side edge of the bearing hole seat (3), and two ends of the oil passing grooves (11) respectively penetrate through the inner circumferential surface and the outer circumferential surface of the bearing hole seat (3).

10. The engine bearing lubricating structure of claim 1 or 2, characterized in that the lubricating structure further comprises an oil filling hole (12) penetrating through the tank body (1), the inner end of the oil filling hole (12) is communicated with the oil storage cavity (4), the outer end of the oil filling hole penetrates through the tank body (1), the outer end of the oil filling hole (12) is detachably blocked by a plug (13), and the central axis of the oil filling hole (12) coincides with the central axis of the oil guide hole (5).