CN208237451U - A kind of diesel lubrication pump - Google Patents

Abstract

The utility model discloses a kind of diesel lubrication pumps, including idle gear, oil pump body, idle gear shaft, nut, check ring, fixed pin, outer rotor, internal rotor, briquetting, split washer, pressure spring, adjustment gasket, oil pump cover and bushing, the internal rotor is mounted on idle gear shaft, the internal rotor is arranged in outer rotor inner hole, the internal rotor is equipped with several double wedges, the outer rotor is equipped with several internal tooths, and the double wedge and internal tooth cooperate.The utility model assembly is convenient, convenient for the care and maintenance of lubricating oil pump, stable working performance；It is cooperated by internal rotor, outer rotor, the back lash rate of change is small, improves the working efficiency of lubricating oil pump, reduces lubricating oil pump kinetic equation loss, extends the service life of inner and outer rotors；It is cooperated by the lubrication mouth and idle gear shaft of internal rotor, the screw lubrication oil duct and the lubricating oil pump housing of idle gear shaft cooperate, and improve the lubricity between mating surface, extend the working life of lubricating oil pump.

Description

A kind of diesel lubrication pump

[technical field]

The utility model relates to the technical field of lubricating oil pump, in particular to a kind of technical field of diesel lubrication pump.

[background technique]

Lubricating arrangement of the lubricating oil pump as engine, quality are increasingly taken seriously, and lubricating oil pump is divided into gear pump at present With impeller pump two major classes, wherein impeller pump generally comprises the upper cover plate and lower cover plate being sequentially overlapped together, upper cover plate or under It is provided with rotor chamber on cover board, the internal rotor and outer rotor of a pair of of internal messing are installed in rotor chamber, when internal rotor and outer turn When son is relatively rotated, machine oil can be transported to the other side from the side that internal rotor and outer rotor are formed by engagement chamber, from And by the region of interest of oil delivery to engine.

In order to improve the assembling quality of lubricating oil pump, there is miscellaneous tool, these assembly tools make machine oil The assembling quality of pump is greatly improved, but currently, the assembly of lubricating oil pump is complicated, shape is larger, loosely organized, peace Dress space requirement is big, and the resistance to sliding of inner and outer rotors mating surface is bigger than gear pump, and power consumption is larger, inside and outside rotor in oil pump Between eccentricity and tooth curve deposit deficiency in design so that the back lash rate of change is big at work for inner and outer rotors, lead Cause lubricating oil pump working efficiency low, kinetic equation loss is big, and noise is big, and inner and outer rotors are easy to be damaged.

[utility model content]

The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of diesel lubrication pump, assembly is just Victory, compact overall structure, outer dimension is small, light-weight, has good lubricity between mating surface, fuel feeding uniformity is good, interior The outer rotor back lash rate of change is small, improves the working efficiency of lubricating oil pump, reduces lubricating oil pump kinetic equation loss, extends inner and outer rotors Service life extends the service life of lubricating oil pump.

To achieve the above object, the utility model proposes a kind of diesel lubrication pump, including idle gear, oil pump body, Idle gear shaft, nut, check ring, fixed pin, outer rotor, internal rotor, briquetting, split washer, pressure spring, adjustment gasket, machine oil Pump cover and bushing, the oil pump body include idle gear axis hole, and the idle gear axis hole is adapted with idle gear shaft, the machine oil The pump housing is mounted on idle gear shaft by idle gear axis hole, and the internal rotor is mounted on idle gear shaft, and the outer rotor includes Outer rotor inner hole, the internal rotor are arranged in outer rotor inner hole, and the internal rotor is equipped with several double wedges, the outer rotor Be equipped with several internal tooths, the double wedge and internal tooth cooperate, be additionally provided on the internal rotor for lubricate internal rotor with it is lazy The lubrication mouth of gear shaft mating surface is additionally provided with locating slot on the outer rotor, is equipped with fixed pin, the positioning in the locating slot The inner wall of slot is equipped with bushing, and the bushing is clipped between fixed pin and locating slot, and the idle gear is covered in outer rotor and machine oil On the outer wall of the pump housing, the idle gear is connected with outer rotor by fixed pin, and check ring is additionally provided on the idle gear, described Check ring is located at the top of fixed pin, and the idle gear shaft is equipped with oil pump cover, and the oil pump cover and idle gear are mutual Cooperate, the screw lubrication oil duct for the lubricating oil pump housing and idle gear shaft mating surface is additionally provided on the idle gear shaft.

Preferably, the idle gear shaft includes linkage section, changeover portion and drive section, the linkage section, changeover portion and drive Dynamic section is an integral structure, and the oil pump cover, internal rotor, oil pump body are mounted on changeover portion, and the linkage section is equipped with Briquetting, split washer, pressure spring, adjustment gasket, are equipped with briquetting, are cased on the briquetting between the split washer and oil pump cover Pressure spring, is equipped with adjustment gasket between the briquetting and oil pump cover, the drive section is equipped with nut, the linkage section, transition Section and drive section pass through sharp angle processing.

Preferably, the internal rotor and outer rotor pass through sharp angle processing, the internal rotor and outer rotor are nibbled Conjunction gap is 0.075mm~0.15mm.

Preferably, the quantity of the double wedge is four, the quantity of the internal tooth is five.

The utility model has the beneficial effects that the utility model assembly is convenient, installation effectiveness is improved, reduces labor intensity, just In the care and maintenance of lubricating oil pump, stable working performance；It being cooperated by internal rotor, outer rotor, the back lash rate of change is small, The working efficiency of lubricating oil pump is improved, lubricating oil pump kinetic equation loss is reduced, extends the service life of inner and outer rotors；Pass through the profit of internal rotor Sliding mouth and idle gear shaft cooperate, and the screw lubrication oil duct and the lubricating oil pump housing of idle gear shaft cooperate, and improve cooperation Lubricity between face extends the working life of lubricating oil pump.

The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.

[Detailed description of the invention]

Fig. 1 is a kind of structural schematic diagram of diesel lubrication pump of the utility model；

Fig. 2 is a kind of the schematic diagram of the section structure of the oil pump body of diesel lubrication pump of the utility model；

Fig. 3 is a kind of structural schematic diagram of the idle gear shaft of diesel lubrication pump of the utility model；

Fig. 4 is a kind of the schematic diagram of the section structure of the internal rotor of diesel lubrication pump of the utility model；

Fig. 5 is a kind of the schematic diagram of the section structure of the outer rotor of diesel lubrication pump of the utility model.

In figure: turning outside 1- idle gear, 2- oil pump body, 3- idle gear shaft, 4- nut, 5- check ring, 6- fixed pin, 7- Son, 8- internal rotor, 9- briquetting, 10- split washer, 11- pressure spring, 12- adjustment gasket, 13- oil pump cover, 14- bushing, 21- are lazy Gear shaft holes, 31- linkage section, 32- changeover portion, 33- drive section, 34- screw lubrication oil duct, 71- outer rotor inner hole, 72- internal tooth, 73- locating slot, 81- double wedge, 82- lubricate mouth.

[specific embodiment]

Refering to fig. 1 to Fig. 5, a kind of diesel lubrication pump of the utility model, including idle gear 1, oil pump body 2, idle gear Axis 3, nut 4, check ring 5, fixed pin 6, outer rotor 7, internal rotor 8, briquetting 9, split washer 10, pressure spring 11, adjustment gasket 12, oil pump cover 13 and bushing 14, the oil pump body 2 include idle gear axis hole 21, the idle gear axis hole 21 and idle gear Axis 3 is adapted, and the oil pump body 2 is mounted on idle gear shaft 3 by idle gear axis hole 21, and the internal rotor 8 is mounted on lazy On gear shaft 3, the outer rotor 7 includes outer rotor inner hole 71, and the internal rotor 8 is arranged in outer rotor inner hole 71, described interior Rotor 8 is equipped with several double wedges 81, and the outer rotor 7 is equipped with several internal tooths 72, and the double wedge 81 and internal tooth 72 are mutual Cooperate, the lubrication mouth 82 for lubricating internal rotor 8 Yu 3 mating surface of idle gear shaft, the outer rotor are additionally provided on the internal rotor 8 It is additionally provided with locating slot 73 on 7, fixed pin 6 is equipped in the locating slot 73, the inner wall of the locating slot 73 is equipped with bushing 14, institute Bushing 14 is stated to be clipped between fixed pin 6 and locating slot 73,1 set of the idle gear on the outer wall of outer rotor 7 and oil pump body 2, The idle gear 1 is connected with outer rotor 7 by fixed pin 6, and check ring 5, the check ring are additionally provided on the idle gear 1 5 are located at the top of fixed pin 6, and the idle gear shaft 3 is equipped with oil pump cover 13, and the oil pump cover 13 and idle gear 1 are mutual Cooperate, the screw lubrication oil duct 34 for the lubricating oil pump housing 2 and 3 mating surface of idle gear shaft is additionally provided on the idle gear shaft 3. The idle gear shaft 3 includes linkage section 31, changeover portion 32 and drive section 33, the linkage section 31, changeover portion 32 and drive section 33 It is an integral structure, the oil pump cover 13, internal rotor 8, oil pump body 2 are mounted on changeover portion 32, on the linkage section 31 Equipped with briquetting 9, split washer 10, pressure spring 11, adjustment gasket 12, briquetting is equipped between the split washer 10 and oil pump cover 13 9, pressure spring 11 is cased on the briquetting 9, and adjustment gasket 12, the drive section 33 are equipped between the briquetting 9 and oil pump cover 13 It is equipped with nut 4, the linkage section 31, changeover portion 32 and drive section 33 are handled by sharp angle.The internal rotor 8 and outer Rotor 7 is handled by sharp angle, and the back lash of the internal rotor 8 and outer rotor 7 is 0.075mm~0.15mm.It is described The quantity of double wedge 81 is four, and the quantity of the internal tooth 72 is five.

Utility model works process:

During the work time, idle gear shaft 3 drives idle gear 1 to rotate to a kind of diesel lubrication pump of the utility model, outer to turn For son 7 with 1 synchronous rotary of idle gear, outer rotor 7 drives internal rotor 8 to rotate, and in inner and outer rotors rotary course, internal rotor 8 is every Always there is the contact point with the internal tooth 72 of outer rotor 7 on the flute profile contour line of a double wedge 81, makes to form four work between inner and outer rotors Chamber.Since the speed ratio of inner and outer rotors is 4:5, so outer rotor 7 is always slower than internal rotor 8, and due to the presence of eccentricity, make work Make chamber volume and generates size variation.When a certain working chamber is turned over from oil suction chamber, volume increases, and generates vacuum, machine oil is through oil inlet Hole is inhaled into.After the working chamber sucks oil, intracavitary volume reduces when continuing to rotate, and oil pressure increases, when being communicated with oil outlet chamber, High-pressure oil is extruded through oil outlet, completes a working cycles.

Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new Scheme after type simple transformation belongs to the protection scope of the utility model.

Claims (4)

1. a kind of diesel lubrication pump, it is characterised in that: including idle gear (1), oil pump body (2), idle gear shaft (3), nut (4), check ring (5), fixed pin (6), outer rotor (7), internal rotor (8), briquetting (9), split washer (10), pressure spring (11), Gasket (12), oil pump cover (13) and bushing (14) are adjusted, the oil pump body (2) includes idle gear axis hole (21), described lazy Gear shaft holes (21) are adapted with idle gear shaft (3), and the oil pump body (2) is mounted on idle gear by idle gear axis hole (21) On axis (3), the internal rotor (8) is mounted on idle gear shaft (3), and the outer rotor (7) includes outer rotor inner hole (71), described In outer rotor inner hole (71), the internal rotor (8) is equipped with several double wedges (81), the outer rotor for internal rotor (8) setting (7) several internal tooths (72) are equipped with, the double wedge (81) and internal tooth (72) cooperate, are additionally provided on the internal rotor (8) For lubricating the lubrication mouth (82) of internal rotor (8) Yu idle gear shaft (3) mating surface, locating slot is additionally provided on the outer rotor (7) (73), fixed pin (6) are equipped in the locating slot (73), the inner wall of the locating slot (73) is equipped with bushing (14), the lining Set (14) is clipped between fixed pin (6) and locating slot (73), and the idle gear (1) covers in outer rotor (7) and oil pump body (2) On outer wall, the idle gear (1) is connected with outer rotor (7) by fixed pin (6), is additionally provided with spring catch on the idle gear (1) It encloses (5), the check ring (5) is located at the top of fixed pin (6), and the idle gear shaft (3) is equipped with oil pump cover (13), institute It states oil pump cover (13) and idle gear (1) to cooperate, be additionally provided on the idle gear shaft (3) for the lubricating oil pump housing (2) With the screw lubrication oil duct (34) of idle gear shaft (3) mating surface.

2. a kind of diesel lubrication pump as described in claim 1, it is characterised in that: the idle gear shaft (3) includes linkage section (31), changeover portion (32) and drive section (33), the linkage section (31), changeover portion (32) and drive section (33) are integral type knot Structure, the oil pump cover (13), internal rotor (8), oil pump body (2) are mounted on changeover portion (32), on the linkage section (31) Equipped with briquetting (9), split washer (10), pressure spring (11), adjustment gasket (12), the split washer (10) and oil pump cover (13) Between be equipped with briquetting (9), be cased with pressure spring (11) on the briquetting (9), tune be equipped between the briquetting (9) and oil pump cover (13) Whole gasket (12), the drive section (33) are equipped with nut (4), the linkage section (31), changeover portion (32) and drive section (33) Handled by sharp angle.

3. a kind of diesel lubrication pump as described in claim 1, it is characterised in that: the internal rotor (8) and outer rotor (7) are equal It is handled by sharp angle, the back lash of the internal rotor (8) and outer rotor (7) is 0.075mm~0.15mm.

4. a kind of diesel lubrication pump as described in claim 1, it is characterised in that: the quantity of the double wedge (81) is four, The quantity of the internal tooth (72) is five.