CN218522772U - Structure of compressor pump oil - Google Patents

Abstract

The utility model discloses a structure of compressor pump oil, which comprises a crankshaft, a bearing, an axial central oil hole, a first annular groove, a second annular groove and a radial hole; the end face of the crankshaft is also connected with a shaft shoulder pad and a baffle plate, the middle part of the shaft shoulder pad is provided with a second central oil hole which corresponds to and is communicated with the axial central oil hole, and two sides of the second central oil hole are respectively provided with a side oil hole which is communicated with a second annular groove; a straight groove is formed in the middle of the baffle and is communicated with the second center oil hole and the side oil holes respectively; the baffle with still be equipped with the inlet port on the shoulder pad, the inlet port first ring channel intercommunication. This structure of compressor pump oil can utilize the bent axle is rotatory with higher speed, promotes oil pressure and pump oil volume, can avoid eccentric axial inclined hole easily to bore inclined problem, also can avoid axial inclined hole and bent axle edge to be close too and influence the problem of bent axle bearing capacity, has still solved different bent axle eccentric volumes and the limited problem of space arrangement that leads to.

Description

Structure of compressor pump oil

Technical Field

The utility model relates to compressor pump oil technical field, concretely relates to structure of compressor pump oil.

Background

When the reciprocating piston refrigeration compressor works, all motion matching surfaces need oil lubrication (except oil-free lubrication), usually, an eccentric axial inclined hole is drilled at the end part of a crankshaft, the crankshaft rotates at a high speed to generate centrifugal force, and the eccentric axial hole pumps oil more and more the farther the eccentric axial hole deviates from the center.

Although this crankshaft has a simple structure, it has the following problems: 1. the oil pumping quantity is related to the distance between the oil hole and the crankshaft rotation, so that the oil pumping quantity is limited by the outer diameter of the crankshaft; 2. the eccentric axial inclined hole is easy to drill, and the eccentric hole is too close to the edge of the crankshaft, so that the wall of the crankshaft is too thin, and the bearing capacity of the crankshaft is influenced; 3. the eccentric axial oil holes are not easily arranged and the space is limited under the influence of the eccentric amount of the crankshaft.

Disclosure of Invention

The utility model aims at providing a structure of compressor pump oil to the problem that prior art exists.

In order to achieve the above object, the utility model adopts the following technical scheme:

a structure of compressor oil pumping comprises a crankshaft, wherein a bearing is sleeved at the end part of the crankshaft, an axial central oil hole is formed in the middle of the crankshaft, a first annular groove is formed in the inner periphery of the end part of the crankshaft, a second annular groove is formed between the outer periphery of the end part of the crankshaft and the bearing, and the first annular groove is communicated with the second annular groove through a plurality of radial holes formed in the end part of the crankshaft; the end face of the crankshaft is further connected with a shaft shoulder pad and a baffle plate, a second central oil hole corresponding to and communicated with the axial central oil hole is formed in the middle of the shaft shoulder pad, and side oil holes communicated with the second annular groove are formed in two sides of the second central oil hole respectively; a straight groove is arranged in the middle of the baffle plate, the straight groove stretches across the orthographic projection range of the first annular groove and the orthographic projection range of the second annular groove, and the straight groove is communicated with the second center oil hole and the side oil holes respectively; the baffle and the shaft shoulder pad are also provided with oil inlet holes which correspond one to one, and the oil inlet holes are staggered with the straight grooves and communicated with the first annular groove.

The structure of the compressor oil pumping can accelerate by utilizing the rotation of the crankshaft, improve the oil pressure and the oil pumping quantity, and the axial center oil hole of the crankshaft can be axially arranged without being obliquely arranged, so that the problem that the eccentric axial inclined hole is easy to drill and deflect is avoided, and the problem that the bearing pressure of the crankshaft is influenced because the axial inclined hole is close to the edge of the crankshaft can be avoided; because the axial setting of axial center oilhole can be kept, the spatial arrangement of bent axle can be more nimble, has solved the different bent axle eccentricity of current bent axle and the limited problem of spatial arrangement that leads to.

Through the communication arrangement of the first annular groove, the second annular groove and the radial hole, oil entering the first annular groove can be accelerated and pressurized under high-speed rotation and thrown into the second annular groove; oil liquid in the second annular groove can enter the straight groove on the baffle through the side oil hole on the shaft shoulder pad, and the oil liquid can enter the axial center oil hole through the second center oil hole in the middle of the shaft shoulder pad after being converged in the straight groove; that is, when entering the end of the crankshaft, the oil will be pressurized and the pumping amount will be increased through such a flow path, and then re-enter the axial center oil hole from the end, and the oil enters each kinematic pair through the axial center oil hole.

The utility model discloses a pump oil, including the axle shoulder pad, the oil inlet hole, the axle shoulder pad with the collocation use of baffle can form predetermined fluid circulation passageway, the inlet port can let fluid directly get into in the first ring channel, the axle shoulder pad then can avoid getting into in the fluid in the first ring channel gets into the axial direction oil hole on next door and the straight flute of below, fluid must pass through in the first ring channel radial hole with the second ring channel just can pass through the side oil hole gets into the straight flute, and the straight flute again with second center oilhole with the axial direction oil hole intercommunication to reach the effect of pump oil.

The shield and the shaft shoulder pad also function as an end seal. The bearing can be used for the rotation of the crankshaft and can be matched with the crankshaft to form the second annular groove.

Further, the first annular groove and the second annular groove are concentrically arranged, the first annular groove and the second annular groove are coaxially arranged with the axial center oil hole, or the first annular groove and the second annular groove may be eccentrically arranged, and the axial center oil hole may be an eccentric axial straight hole.

Furthermore, the radial holes are symmetrically arranged at the center and are 2-8, and the arrangement of the radial holes can ensure that oil liquid entering the first annular groove can smoothly and quickly enter the second annular groove.

Further, the diameter of the second center oil hole is not smaller than the inner diameter of the axial center oil hole and smaller than the outer diameter of the end portion of the axial center oil hole, and the width of the straight groove is larger than the diameter of the second center oil hole. Such an arrangement enables a seal to be formed there, avoiding oil from entering the straight groove or the axial central oil bore directly from the first annular groove.

Furthermore, at least one pair of side oil holes are symmetrically arranged on two sides of the second center oil hole and fall in the range of the straight groove.

Furthermore, the oil inlet holes are at least one pair and are symmetrically arranged on two sides of the straight groove. The pair of oil inlet holes and the pair of side oil holes are arranged in four directions at intervals of 90 degrees and respectively correspond to the first annular groove and the second annular groove.

Furthermore, the oil inlet is a round hole or an arc hole, and the straight groove is a long strip-shaped groove.

Furthermore, the outer contour shape of the shaft shoulder pad is the same as that of the baffle plate, the baffle plate is of a quadrilateral structure, one pair of the baffle plates is arranged by a fillet at the opposite corners, and the other pair of the baffle plates is arranged from the opposite corners to the right angle; alternatively, the baffle plate is in other shapes such as square, rectangle, circle and the like. The shaft shoulder pad is consistent with the outer contour shape of the baffle plate, and the oil hole and the oil groove which meet the requirements are ensured to be arranged and can be attached to the outer bearing.

Furthermore, the baffle plate and the shaft shoulder pad are fixedly connected with the bearing through a plurality of bolts.

Furthermore, the second annular groove is formed in the edge of the inner end of the bearing, namely the second annular groove is not required to be machined in the periphery of the crankshaft, so that the wall thickness of the crankshaft can be ensured, and the situation that the bearing capacity of the crankshaft is influenced due to the fact that the wall thickness of the end part of the crankshaft is too thin due to the fact that the inner groove and the outer groove are formed is avoided.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the structure of the compressor oil pumping can improve oil pressure and oil pumping quantity by the arrangement of the first annular groove, the second annular groove, the radial hole and a communication channel formed by the shaft shoulder pad and the baffle plate and by the rotation acceleration of the crankshaft; 2. the axial central oil hole of the crankshaft can be axially arranged without being obliquely arranged, so that the problem that an eccentric axial inclined hole is easy to drill and deflect is solved; 3. the mechanism can also avoid the problem that the bearing pressure of the crankshaft is influenced because the axial inclined hole is close to the edge of the crankshaft; 4. because the axial setting of axial center oilhole can be kept, the spatial arrangement of bent axle can be more nimble, has solved the different bent axle eccentricity of current bent axle and the limited problem of spatial arrangement that leads to.

Drawings

Fig. 1 is a schematic view of an assembly of the structure of the compressor oil pumping of the present invention;

FIG. 2 isbase:Sub>A schematic view of the cross-sectional structure A-A of FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

fig. 4 is a schematic view of an end structure of the crankshaft of the present invention;

FIG. 5 is a schematic view of the shoulder pad of the present invention;

fig. 6 is a schematic structural view of the baffle of the present invention;

fig. 7 is a schematic diagram of the path of oil entering the axial center oil hole according to the present invention;

in the figure: 1. a crankshaft; 101. an axial center oil hole; 102. a first annular groove; 103. a radial bore; 2. a bearing; 201. a second annular groove; 3. a shaft shoulder pad; 301. a second center oil hole; 302. a side oil hole; 4. a baffle plate; 401. a straight groove; 5. an oil inlet hole; 6. and connecting the holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

as shown in fig. 1 to 7, a structure for pumping oil of a compressor includes a crankshaft 1, a bearing 2 is sleeved at an end of the crankshaft 1, an axial central oil hole 101 is formed in a middle portion of the crankshaft 1, a first annular groove 102 is formed in an inner periphery of the end of the crankshaft 1, a second annular groove 201 is formed between an outer periphery of the end of the crankshaft 1 and the bearing 2, and the first annular groove 102 is communicated with the second annular groove 201 through a plurality of radial holes 103 formed in the end of the crankshaft 1; the end surface of the crankshaft 1 is further connected with a shaft shoulder pad 3 and a baffle 4, the middle of the shaft shoulder pad 3 is provided with a second central oil hole 301 corresponding to and communicated with the axial central oil hole 101, and two sides of the second central oil hole 301 are respectively provided with a side oil hole 302 communicated with the second annular groove 201; a straight groove 401 is arranged in the middle of the baffle 4, the straight groove 401 spans the orthographic projection range of the first annular groove 102 and the orthographic projection range of the second annular groove 201, and the straight groove 401 is respectively communicated with the second center oil hole 301 and the side oil holes 302; the baffle 4 and the shaft shoulder pad 3 are also provided with oil inlets 5 which correspond one to one, and the oil inlets 5 are staggered with the straight grooves 401 and communicated with the first annular groove 102.

The structure of the compressor oil pumping can accelerate by utilizing the rotation of the crankshaft, and improve the oil pressure and the oil pumping quantity, and the axial center oil hole 101 of the crankshaft 1 can be axially arranged without being obliquely arranged, so that the problem that an eccentric axial inclined hole is easy to drill and deflect is avoided, and the problem that the bearing pressure of the crankshaft is influenced due to the fact that the axial inclined hole is close to the edge of the crankshaft can be avoided; because the axial straight hole setting that can keep axial center oilhole 101, the spatial arrangement of bent axle can be more nimble, has solved the different bent axle eccentricity of current bent axle and the limited problem of spatial arrangement that leads to.

Through the communication arrangement of the first annular groove 102, the second annular groove 201 and the radial hole 103, the oil liquid entering the first annular groove 102 can be accelerated and pressurized under high-speed rotation and thrown into the second annular groove 201; oil liquid in the second annular groove 201 enters a straight groove 401 on the baffle 4 through a side oil hole 302 on the shaft shoulder pad 3, and the oil liquid can enter the axial center oil hole 101 through a second center oil hole 301 in the middle of the shaft shoulder pad 3 after being converged in the straight groove 401; that is, when entering the end of the crankshaft 1, the oil will be pressurized and the pumping amount will be increased through such a flow path, and then re-enter the axial center oil hole 101 from the end, and the oil enters each kinematic pair through the axial center oil hole 101.

The shaft shoulder pad 3 with the collocation use of baffle 4 can form predetermined fluid circulation passageway, inlet port 5 can let fluid directly get into in the first ring channel 102, shaft shoulder pad 3 then can avoid getting into in the direct straight flute of axial direction center oilhole 101 and below that gets into next door in the first ring channel 102, fluid must pass through in the first ring channel 102 radial hole 103 with the second ring channel 201 just can pass through side oilhole 302 gets into straight flute 401, and straight flute 401 again with second center oilhole 301 with axial direction center oilhole 101 intercommunication to reach the effect of pump oil.

The baffle 4 and the shaft shoulder pad 3 also serve as end seals. The bearing 2 can be used for the rotation of the crankshaft, and can form the second annular groove 201 by being engaged with the crankshaft 1.

Further, the first annular groove 102 and the second annular groove 201 are concentrically arranged, and both the first annular groove 102 and the second annular groove 201 are coaxially arranged with the axial center oil hole 101.

Furthermore, the radial holes 103 are four and are arranged in a central symmetry manner, and the arrangement of the radial holes 103 can ensure that oil liquid entering the first annular groove can smoothly and quickly enter the second annular groove.

Further, the diameter of the second center oil hole 301 is equal to the inner diameter of the axial center oil hole 101 and smaller than the outer diameter of the end of the axial center oil hole, and the width of the straight groove 401 is larger than the diameter of the second center oil hole 301. Such an arrangement enables a seal to be formed there, avoiding oil from entering the straight groove or the axially central oil bore directly from the first annular groove.

Further, the pair of side oil holes 302 are symmetrically disposed on both sides of the second center oil hole 301 and fall within the straight groove 401.

Further, the oil inlet holes 5 are a pair and symmetrically arranged on two sides of the straight groove 401. The pair of the oil inlet holes 5 and the pair of the side oil holes 302 are provided at exactly four locations spaced at 90 degrees, and correspond to the first annular groove 102 and the second annular groove 201, respectively.

Further, the oil inlet hole 5 is an arc-shaped hole so as to facilitate oil inlet, and the straight groove 401 is a long strip-shaped groove.

Furthermore, the outer contour shape of the shaft shoulder pad 3 is the same as that of the baffle 4, the baffle 4 is of a parallelogram structure, one pair of the opposite corners are arranged in a rounding way, and the other pair of the opposite corners are arranged in a right-angle way, so that the arrangement is convenient to connect and mount, and simultaneously reduces the volume and the weight of the shaft shoulder pad.

Furthermore, the baffle 4 and the shaft shoulder pad 3 are provided with connecting holes 6 corresponding to each other one by one, and the connecting holes 6 are respectively fixedly connected with the bearing 2 through bolts.

Furthermore, the second annular groove 201 is formed in the edge of the inner end of the bearing 2, that is, the second annular groove 201 does not need to be machined in the periphery of the crankshaft 1, so that the wall thickness of the crankshaft 1 can be ensured, and the bearing capacity of the crankshaft 1 is prevented from being influenced by the fact that the wall thickness of the end part of the crankshaft 1 is too thin due to the fact that the inner and outer grooves are formed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A structure of compressor pump oil comprises a crankshaft, wherein a bearing is sleeved at the end part of the crankshaft, and the structure is characterized in that an axial central oil hole is formed in the middle of the crankshaft, a first annular groove is formed in the inner periphery of the end part of the crankshaft, a second annular groove is formed between the outer periphery of the end part of the crankshaft and the bearing, and the first annular groove and the second annular groove are communicated through a plurality of radial holes formed in the end part of the crankshaft; the end face of the crankshaft is further connected with a shaft shoulder pad and a baffle plate, a second central oil hole corresponding to and communicated with the axial central oil hole is formed in the middle of the shaft shoulder pad, and side oil holes communicated with the second annular groove are formed in two sides of the second central oil hole respectively; a straight groove is arranged in the middle of the baffle plate, the straight groove stretches across the orthographic projection range of the first annular groove and the orthographic projection range of the second annular groove, and the straight groove is communicated with the second center oil hole and the side oil holes respectively; the baffle and the shaft shoulder pad are also provided with oil inlet holes in one-to-one correspondence, and the oil inlet holes are staggered with the straight grooves and communicated with the first annular grooves.

2. The structure of compressor pump oil according to claim 1, wherein the first annular groove and the second annular groove are concentrically disposed, and both the first annular groove and the second annular groove are coaxially disposed with the axial center oil hole, or the first annular groove and the second annular groove are eccentrically disposed.

3. The structure of compressor pump oil according to claim 1, wherein the number of the radial holes is 2 to 8 that are arranged centrosymmetrically.

4. The structure of compressor pump oil according to claim 1, wherein the diameter of the second center oil hole is not smaller than the inner diameter of the axial center oil hole and smaller than the outer diameter of the end portion of the axial center oil hole, and the width of the straight groove is larger than the diameter of the second center oil hole.

5. The compressor oil pumping structure according to claim 1, wherein the side oil holes are at least one pair, symmetrically disposed on both sides of the second center oil hole, and falling within the range of the straight groove.

6. The structure of compressor oil pumping according to claim 1, wherein the oil inlet holes are at least one pair and are symmetrically arranged at both sides of the straight groove.

7. The structure of compressor pump oil according to claim 1, wherein the oil inlet hole is a circular hole or an arc-shaped hole, and the straight groove is an elongated groove.

8. The structure of compressor pump oil according to claim 1, wherein the outer contour shape of the shaft shoulder pad is the same as the outer contour shape of the baffle plate.

9. The structure of compressor pump oil according to claim 1, wherein the baffle plate and the shaft shoulder pad are fixedly connected with the bearing by a plurality of bolts.

10. The structure of compressor oil pumping according to claim 1, wherein the inner end edge of the bearing is opened with the second annular groove.

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