CN212691459U - Rotating shaft lubricating structure of vane oil pump - Google Patents

Abstract

The utility model provides a pivot lubricating structure of blade oil pump belongs to oil pump technical field. The technical problems that a rotating shaft of an existing vane oil pump can rub against a pump cover of a pump shell relatively, abrasion is serious and noise is generated due to long-term operation are solved. The inner cavity of the top ring in the rotating shaft lubricating structure of the vane oil pump is always communicated with at least one slot, and the inner side wall of the shaft hole on the pump shell and/or the pump cover is provided with a lubricating groove which is communicated with the inner cavity of the top ring. The rotating shaft lubricating structure of the vane oil pump can effectively lubricate the rotating shaft and reduce the abrasion and noise of the rotating shaft.

Description

Rotating shaft lubricating structure of vane oil pump

Technical Field

The utility model belongs to the technical field of the oil pump, a pivot lubricating structure of blade oil pump is related to.

Background

In a lubricating system, an oil pump is used for forcibly pressing and conveying oil to the motion surfaces of various parts of an engine after the oil is increased to a certain pressure, and the oil pump is mainly divided into a gear type oil pump, a rotor type oil pump and a vane pump.

However, in the prior art, due to structural limitations, most gear-type oil pumps are still constant-displacement oil pumps, the displacement of the gear-type oil pumps is determined according to the low-speed high-pressure working condition of an engine, the oil supply and the oil pressure increase along with the increase of the rotating speed of the engine, the oil supply after the medium-speed and high-speed is far higher than the actual lubricating requirement of the engine, the waste of energy consumption is caused, and the oil pressure after the high speed is possibly too high, so that the problems of engine oil leakage, pipeline burst and the like are caused. The vane pump has mature technology in regulating oil pressure and displacement of engine oil, and has feedback oil path and regulating mechanism set in the pump body to regulate the eccentricity between the stator and the rotor automatically based on the practical lubricating requirement of the engine.

However, the rotor of the vane pump can rub against the pump cover of the pump casing during rotation, which can cause serious abrasion and noise after long-term operation.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a pivot lubricating structure of blade oil pump, the utility model aims to solve the technical problem that: how to reduce the abrasion and the noise of the rotating shaft of the vane oil pump.

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

a rotating shaft lubricating structure of a vane oil pump comprises a pump shell and a pump cover, wherein a rotor is rotatably connected to the pump shell, a rotating shaft which is limited to the circumference of the rotor is inserted into the rotor, shaft holes which are matched with two ends of the rotating shaft are respectively arranged on the pump shell and the pump cover, a plurality of slots which extend along the radial direction are arranged on the outer circumferential surface of the rotor, vane plates which can slide along the inner side walls of the slots are inserted into the slots, a variable slider is sleeved on the outer circumference of the rotor, the outer ends of the vane plates are abutted against the inner edges of the variable slider, top rings which are concentrically arranged with the inner edges of the variable slider are arranged at two ends of the rotor, the inner ends of the vane plates are abutted against the outer circumferential surface of the top ring, the rotating shaft lubricating structure is characterized in that the inner cavity of the top ring is always communicated with at least one slot, and the shaft holes, the lubricating groove is communicated with the inner cavity of the top ring.

The pump case and the pump cover can be mutually covered to form an environment for the rotor to work, the rotating shaft is driven by the engine independently and then drives the rotor to rotate, the blade plates are inserted in the slots formed in the periphery of the rotor, the outer ends of the blade plates are abutted against the inner edges of the variable sliding blocks, the inner ends of the blade plates are abutted against the outer peripheral surface of the top ring concentrically arranged with the inner edges of the variable sliding blocks, the blade plates can be driven to move and slide along the slots in the rotating process of the rotor, the two ends of the blade plates are always abutted against the inner edges of the variable sliding blocks and the outer peripheral surface of the top ring, and therefore the volume of an oil cavity formed between the inner walls of each blade plate and the variable sliding. Machine oil is at the in-process that flows because the inner wall of blade constantly along the slot slides, a small amount of machine oil can enter into the slot and fill remaining space in each slot, inside wall through at the shaft hole sets up the lubrication groove, and make the inboard space of apical ring be linked together with lubrication groove and at least one slot simultaneously, make machine oil can fill to the lubrication groove of shaft hole inside wall like this in, the pivot can constantly contact with the machine oil in the lubrication groove and adhere to when the oil pump work, thereby lubricate this part pivot, reduce the wearing and tearing and the noise of pivot.

In the rotating shaft lubricating structure of the vane oil pump, the lubricating groove extends along the axial direction of the shaft hole. Through setting up the axial extension in lubricated groove edge shaft hole, can reduce the technology degree of difficulty of processing lubricated groove when guaranteeing the lubricated effect of pivot like this, and then reduce the processing cost.

In the rotating shaft lubricating structure of the vane oil pump, an annular step groove is formed in the edge of one end, close to the top ring, of the shaft hole, the annular step groove and the shaft hole are arranged coaxially, and the lubricating groove is communicated with the annular step groove. An annular step groove which is coaxially arranged with the shaft hole is formed in the edge of one end, close to the top ring, of the shaft hole, so that the annular step groove is located on a pump shell or a pump cover, a certain amount of engine oil can be stably stored in the annular step groove and is not influenced by rotation of a rotor or displacement of the top ring, and accordingly, the engine oil consumption in the lubricating groove can be stably supplemented; in addition, the annular step groove can also provide preliminary positioning for the assembly of the rotating shaft and the shaft hole, and the assembly convenience is improved.

In the rotating shaft lubricating structure of the vane oil pump, the diameter of the annular stepped groove is smaller than that of the top ring. The diameter size through setting up annular step groove is less than the diameter size of apical ring, can avoid the unexpected drunkenness of apical ring that the design height is less like this and fall into annular step inslot and lead to the work actual effect, guarantees job stabilization nature.

In the rotating shaft lubricating structure of the vane oil pump, the joint between the inner wall of the annular stepped groove and the inner edge of the shaft hole is subjected to chamfer transition. Through the junction design chamfer transition at the inner wall in annular step groove and shaft hole inner edge, the chamfer can provide the guide effect for the pivot assembly income shaft hole like this, further improves the assembly convenience.

Compared with the prior art, the utility model has the advantages as follows:

this pivot lubricating structure of vane oil pump sets up the lubrication groove through the inside wall in the shaft hole to the inboard space that makes the apical ring is linked together with lubrication groove and at least one slot simultaneously, makes machine oil fill to the lubrication groove of shaft hole inside wall like this in, the pivot can constantly contact with the machine oil in the lubrication groove and adhere to when the oil pump is worked, thereby lubricates this part pivot, reduces the wearing and tearing and the noise of pivot.

Drawings

Fig. 1 is a partial structural schematic diagram of a rotating shaft lubricating structure of the vane oil pump.

Fig. 2 is a schematic sectional structure view of a rotating shaft lubricating structure of the vane oil pump.

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

Fig. 4 is a perspective view of the pump casing.

Fig. 5 is a perspective view of the pump cover.

In the drawings, 1, a pump casing; 2. a pump cover;

3. a rotor; 31. a slot;

4. a rotating shaft; 5. a shaft hole; 6. a leaf plate; 7. a variable slider; 8. a top ring; 9. a lubrication groove; 10. annular step groove.

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. 1-5, the rotating shaft lubricating structure of the vane oil pump comprises a pump housing 1 and a pump cover 2, the pump housing 1 is rotatably connected with a rotor 3, a rotating shaft 4 which is circumferentially limited with the rotor 3 is inserted on the rotor 3, shaft holes 5 which are matched with two ends of the rotating shaft 4 are respectively arranged on the pump housing 1 and the pump cover 2, the outer circumferential surface of the rotor 3 is provided with seven slots 31 which extend along the radial direction, the seven slots 31 are uniformly arranged along the circumferential direction of the rotor 3 at intervals, vane plates 6 which can slide along the inner circumferential surface of the slots 31 are inserted in the slots 31, a variable slider 7 is sleeved on the periphery of the rotor 3, the outer ends of the vane plates 6 are abutted against the inner edge of the variable slider 7, two ends of the rotor 3 are provided with top rings 8 which are concentrically arranged with the inner edge of the variable slider 7, the inner ends of the seven vane plates 6 are abutted against the outer circumferential surface of the top ring 8, the inner cavity of the, the lubricating groove 9 is communicated with the inner cavity of the top ring 8. The pump case 1 and the pump cover 2 can be mutually covered to form an environment for the rotor 3 to work, the rotating shaft 4 is driven by the engine independently to drive the rotor 3 to rotate, the vane plate 6 is inserted in the slot 31 arranged on the periphery of the rotor 3, the outer end of the vane plate 6 is abutted against the inner edge of the variable sliding block 7, the inner end of the vane plate 6 is abutted against the outer peripheral surface of the top ring 8 concentrically arranged with the inner edge of the variable sliding block 7, the vane plate 6 can be driven to move and slide along the slot 31 in the rotating process of the rotor 3, two ends of the vane plate 6 are always abutted against the inner edge of the variable sliding block 7 and the outer peripheral surface of the top ring 8, and therefore the volume of an oil cavity formed between the inner walls of each vane plate 6 and the variable sliding block 7 is. Machine oil is at the in-process that flows because the inner wall of slot 31 is constantly followed to acanthus leaf 6 slides, a small amount of machine oil can enter into slot 31 and fill remaining space in each slot 31, set up lubrication groove 9 through the inside wall at shaft hole 5, and make 8 inboard spaces of apical ring be linked together with lubrication groove 9 and at least one slot 31 simultaneously, make machine oil can fill to the lubrication groove 9 of 5 inside walls in shaft hole like this, pivot 4 can constantly contact with the machine oil in lubrication groove 9 and adhere to when the oil pump work, thereby lubricate partial pivot 4, reduce the wearing and tearing and the noise of pivot 4. Preferably, the lubrication groove 9 extends in the axial direction of the shaft hole 5. Through setting up the axial extension of lubrication groove 9 edge shaft hole 5, can reduce the technology degree of difficulty of processing lubrication groove 9 when guaranteeing 4 lubricated effects of pivot like this, and then reduce the processing cost. Further, an annular step groove 10 is formed in the edge of one end, close to the top ring 8, of the shaft hole 5, the annular step groove 10 and the shaft hole 5 are coaxially arranged, and the lubricating groove 9 is communicated with the annular step groove 10. An annular step groove 10 which is coaxially arranged with the shaft hole 5 is formed in the edge of one end, close to the top ring 8, of the shaft hole 5, so that the annular step groove 10 is located on the pump shell 1 or the pump cover 2, a certain amount of engine oil can be stably stored in the annular step groove 10 and is not influenced by the rotation of the rotor 3 or the displacement of the top ring 8, and therefore the engine oil consumption in the lubricating groove 9 can be stably supplemented; in addition, the annular step groove 10 can also provide preliminary positioning for the assembly of the rotating shaft 4 and the shaft hole 5, and the assembly convenience is improved. The diameter dimension of the annular step groove 10 is smaller than that of the top ring 8. The diameter size of the annular step groove 10 is smaller than that of the top ring 8, so that the phenomenon that the top ring 8 with the small design height accidentally moves to fall into the annular step groove 10 to cause actual work can be avoided, and the working stability is guaranteed. The joint of the inner wall of the annular stepped groove 10 and the inner edge of the shaft hole 5 is chamfered. Through the junction design chamfer transition at the inner wall of annular step groove 10 and shaft hole 5 inner edge, the chamfer can provide the guide effect for pivot 4 assembly income shaft hole 5 like this, further improves the assembly convenience.

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 (5)

1. A rotating shaft lubricating structure of a vane oil pump comprises a pump shell (1) and a pump cover (2), wherein a rotor (3) is rotatably connected to the pump shell (1), a rotating shaft (4) circumferentially limited with the rotor (3) is inserted into the rotor (3), shaft holes (5) matched with two ends of the rotating shaft (4) are respectively formed in the pump shell (1) and the pump cover (2), a plurality of slots (31) extending along the radial direction are formed in the outer peripheral surface of the rotor (3), vane plates (6) capable of sliding along the inner side walls of the slots (31) are inserted into the slots (31), a variable sliding block (7) is sleeved on the periphery of the rotor (3), the outer ends of the vane plates (6) abut against the inner edge of the variable sliding block (7), top rings (8) concentrically arranged with the inner edge of the variable sliding block (7) are arranged at two ends of the rotor (3), the inner ends of the blades (6) are abutted against the outer peripheral surface of the top ring (8), and the pump is characterized in that the inner cavity of the top ring (8) is always communicated with at least one slot (31), the inner side wall of the pump shell (1) and/or the inner side wall of the shaft hole (5) on the pump cover (2) is provided with a lubricating groove (9), and the lubricating groove (9) is communicated with the inner cavity of the top ring (8).

2. The rotating shaft lubricating structure of the vane oil pump according to claim 1, wherein the lubricating groove (9) extends in an axial direction of the shaft hole (5).

3. The rotating shaft lubricating structure of the vane oil pump according to claim 1 or 2, wherein an annular stepped groove (10) is formed in an edge of one end of the shaft hole (5) close to the top ring (8), the annular stepped groove (10) is coaxially arranged with the shaft hole (5), and the lubricating groove (9) is communicated with the annular stepped groove (10).

4. The rotating shaft lubricating structure of the vane oil pump according to claim 3, characterized in that the annular step groove (10) has a diameter dimension smaller than that of the top ring (8).

5. The rotating shaft lubricating structure of the vane oil pump according to claim 3, wherein a junction of the inner wall of the annular stepped groove (10) and the inner edge of the shaft hole (5) is chamfered.

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