CN220769708U - Air compressor machine and aircraft nose assembly thereof - Google Patents

Abstract

The utility model discloses an air compressor and a machine head assembly thereof, wherein the machine head assembly comprises: the motor is provided with a transmission shaft in the center, and the compressor head and the wind shielding cover are respectively fixedly connected with two ends of the motor; one end of the transmission shaft, which is close to the compressor head, is fixedly connected with a driving gear of the compressor head, and the motor is directly connected with the compressor head, so that the structure is compact and the occupied space is small. The lateral surface of motor is equipped with at least one along guiding gutter, and the air current of flowing in by the air inlet cooling module flows out from the lateral surface of motor under the guide of whole guiding gutter, need not to flow in the motor, impurity such as greasy dirt, steam or dust that carry secretly when avoiding the air inlet get into the motor, and the protection level is higher, can effectively improve life.

Description

Air compressor machine and aircraft nose assembly thereof

Technical Field

The utility model relates to the technical field of air compressors, in particular to an air compressor and a machine head assembly thereof.

Background

The air compressor is used as core equipment of a pneumatic system, and can compress the gas sucked into the compression chamber into high-pressure gas so as to meet the requirements of the fields of gas conveying, supply, production, processing and the like.

The machine head of the air compressor generally comprises a compressor machine head and a motor, and at present, the compressor machine head and the motor have two connecting modes, namely a split mode, and the compressor machine head and the motor are not compact in structure and occupy large space through a coupler and a middle support; secondly, the compressor head and the motor are directly connected in series by screws into a whole in a combined mode, an air inlet cooling system is arranged in the motor, and impurities such as dust entrained during air inlet can enter the motor, so that the protection level of the motor is poor, the motor is easy to damage and abrade, and the service life is short.

Therefore, how to optimize the head structure of the air compressor to reduce the occupied space and improve the service life is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

Therefore, the utility model aims to provide an air compressor and a machine head assembly thereof, wherein a motor is directly connected with a machine head of the compressor, and air flow flowing in by an air inlet cooling assembly can flow out from the outer side surface of the motor, so that the occupied space is small, and the service life can be prolonged.

In order to achieve the above object, the present utility model provides a head assembly of an air compressor, comprising:

a motor with a transmission shaft at the center;

a compressor head and a wind shielding cover which are respectively and fixedly connected with two ends of the motor;

the air inlet cooling assembly is fixedly arranged at one end of the transmission shaft far away from the compressor head;

one end of the transmission shaft, which is close to the compressor head, is fixedly connected with a driving gear of the compressor head, and at least one edge flow guide groove is arranged on the outer side surface of the motor, and air flow flowing in by the air inlet cooling assembly flows out of the outer side surface of the motor under the guidance of all the flow guide grooves.

Preferably, the first shaft end assembly is further comprised, the first shaft end assembly comprising:

at least one first bearing arranged between the transmission shaft and the windshield cover;

the first gland is sleeved on the transmission shaft and fixedly connected with the end face of the mounting hole arranged in the center of the windshield cover;

a first seal disposed between the windshield cover and the first gland;

and the second sealing piece is arranged between the first gland and the transmission shaft.

Preferably, the first gland is integrally provided with an annular flange, and the annular flange abuts against the outer ring of the adjacent first bearing; the transmission shaft is provided with a first shaft shoulder, and the first shaft shoulder is propped against the inner ring of the adjacent first bearing.

Preferably, the annular flange is provided with at least one first resilient member, all of which bear against the outer race of an adjacent first bearing.

Preferably, the first gland is provided with at least one radial oil filler hole, each radial oil filler hole being used for guiding oil to flow radially towards the first bearing.

Preferably, the second shaft end assembly is further comprised, the second shaft end assembly comprising:

the second gland is fixedly arranged at one end of the transmission shaft, which is close to the driving gear;

the shaft end check ring is fixedly arranged on the compressor head;

at least one second bearing disposed between the drive shaft and the compressor head;

all the second bearings are positioned between the shaft end check ring and the second gland, the second gland is provided with an annular boss propped against the inner ring of the adjacent second bearing, and the shaft end check ring is propped against the outer ring of the adjacent second bearing.

Preferably, still include the oil blanket subassembly, the oil blanket subassembly includes:

the oil seal seat is sleeved on the transmission shaft and fixedly connected with one end of the motor, which is close to the head of the compressor;

the shaft sleeve is fixedly sleeved on the transmission shaft and is positioned between the oil seal seat and the transmission shaft;

the third sealing piece is arranged between the oil seal seat and the motor;

a fourth sealing element arranged between the annular boss of the oil seal seat and the shaft sleeve;

wherein, the transmission shaft is equipped with the second shoulder that offsets with the axle sleeve.

Preferably, the air intake cooling assembly comprises:

an air inlet cover which is provided with a plurality of air inlet holes at the end part and fixedly arranged at one end of the transmission shaft far away from the compressor head;

the fan blade is sleeved on the transmission shaft and arranged in the air inlet cover;

the limiting clamp spring is fixedly arranged on the transmission shaft and used for axially limiting the fan blade;

and the first connecting key is arranged between the transmission shaft and the fan blade.

Preferably, an annular avoidance groove is formed in the outer side face of one end, far away from the compressor head, of the motor, and the annular cylinder of the air inlet cover extends axially until the annular cylinder intersects with the annular avoidance groove.

The utility model also provides an air compressor, which comprises the machine head assembly.

Compared with the background art, the head assembly of the air compressor provided by the utility model comprises the motor, the compressor head, the wind shielding cover and the air inlet cooling assembly, wherein the motor is directly and fixedly connected with the compressor head, and the transmission shaft arranged in the center of the motor is fixedly connected with the driving gear of the compressor head, so that the motor and the compressor head are directly connected, the structure is compact, and the occupied space is small.

In addition, the windshield links firmly with the motor one end of keeping away from the compressor aircraft nose mutually, and the air inlet cooling module sets firmly in the transmission shaft one end of keeping away from the compressor aircraft nose, and the lateral surface of motor is equipped with at least one along the guiding gutter, and the air current that flows in by the air inlet cooling module flows out from the lateral surface of motor under the guide of whole guiding gutter, need not to flow in the motor, impurity such as greasy dirt, steam or dust entrained when avoiding the air inlet get into the motor, and the protection level is higher, can effectively improve life.

The air compressor provided by the utility model comprises the machine head assembly, and has the same beneficial effects.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is an isometric view of a head assembly of an air compressor provided in an embodiment of the present utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an exploded view of FIG. 1;

FIG. 5 is a schematic flow diagram of air flow in a head assembly of an air compressor according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of the first shaft end assembly of FIG. 1 with a first bearing;

FIG. 7 is a cross-sectional view of the first shaft end assembly of FIG. 1 with two first bearings;

FIG. 8 is a cross-sectional view of the second shaft end assembly and oil seal assembly of FIG. 1;

FIG. 9 is an assembly view of the motor, windshield cover, drive gear and second shaft end assembly of FIG. 1;

FIG. 10 is a cross-sectional view of FIG. 9;

fig. 11 is a structural view of the motor of fig. 1.

The reference numerals are as follows:

the motor 1, the compressor head 2, the wind shielding cover 3, the air inlet cooling assembly 4, the first shaft end assembly 5, the second shaft end assembly 6 and the oil seal assembly 7;

the device comprises a transmission shaft 11, a diversion trench 12, an annular avoidance trench 13 and a connecting plate 14;

a first shoulder 111 and a second shoulder 112;

a drive gear 21 and a second connection key 22;

radial oil filler holes 31;

the air inlet cover 41, the fan blades 42, the limiting snap springs 43 and the first connecting keys 44;

a first bearing 51, a first gland 52, a first seal 53, a second seal 54, a first elastic member 55;

an annular flange 521;

a second gland 61, shaft end collar 62 and second bearing 63;

an annular boss 611;

an oil seal seat 71, a sleeve 72, a third seal 73 and a fourth seal 74.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that those skilled in the art will better understand the present utility model, the following description will be given in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model discloses a head assembly of an air compressor, which is shown in fig. 1 to 4 and comprises a motor 1, a compressor head 2, a wind shielding cover 3 and an air inlet cooling assembly 4, wherein the motor 1 can be a permanent magnet motor, and the structure and the working principle of the motor can be specifically referred to the prior art.

The center of motor 1 is equipped with transmission shaft 11, and the one end that transmission shaft 11 is close to compressor aircraft nose 2 links firmly with the driving gear 21 of compressor aircraft nose 2 mutually, and the one end of motor 1 links firmly with compressor aircraft nose 2 mutually, makes motor 1 and compressor aircraft nose 2 realize directly alliing, just so realizes the integrated design between motor 1 and the compressor aircraft nose 2, and the structure is compacter, and occupation space is less. In addition, the motor 1 is directly connected with the compressor head 2, so that the transmission precision can be effectively improved.

Specifically, the motor 1 includes a housing, one end of the housing, which is close to the compressor head 2, is integrally provided with a connection plate 14, and the connection plate 14 is fixedly connected with the open end of the compressor head 2 through a plurality of bolts. The shape of the connection plate 14 matches the outer contour of the open end of the compressor head 2, and both may be rectangular, but is not limited thereto.

The windshield cover 3 is fixedly connected with one end of the motor 1 far away from the compressor head 2, so that the windshield cover 3 prevents air flow into the motor 1. The air inlet cooling assembly 4 is fixedly arranged at one end of the transmission shaft 11, which is far away from the compressor head 2, and at least one edge diversion trench 12 is arranged on the outer side surface of the motor 1. As shown in fig. 5, the air flow flowing in from the air inlet cooling assembly 4 flows out from the outer side surface of the motor 1 under the guidance of all the diversion trenches 12, so that the heat released by the operation of the motor 1 is taken away, and the motor 1 is enabled to realize heat dissipation, meanwhile, the air flow does not need to flow into the motor 1 during cooling, and impurities such as greasy dirt, water vapor or dust entrained during air inlet are prevented from entering the motor 1, so that the protection level is higher, and the service life can be effectively prolonged.

Specifically, the windshield cover 3 is fastened to the housing of the motor 1 by bolts. The shell is integrally provided with a plurality of fins, each fin extends along the axial direction of the shell, all fins are uniformly distributed along the circumferential direction of the shell, and a diversion trench 12 is formed between any two adjacent fins.

In summary, the head assembly of the air compressor provided by the utility model can reduce the occupied space and can also prolong the service life.

As shown in fig. 6 and 7, the handpiece assembly further includes a first shaft end assembly 5, the first shaft end assembly 5 is disposed near the first end of the drive shaft 11, and the first shaft end assembly 5 includes at least one first bearing 51, a first gland 52, a first seal 53, and a second seal 54, wherein all of the first bearings 51 are disposed between the drive shaft 11 and the windshield 3 for supporting the drive shaft 11 for rotation relative to the windshield 3. The first bearing 51 may be an angular contact bearing, or may be a deep groove ball bearing and an angular contact bearing, so that all the first bearings 51 can bear both radial load and axial load. The type and the number of the first bearings 51 are not particularly limited, and may be adaptively adjusted according to the actual load born by the transmission shaft 11. The first gland 52 is sleeved on the transmission shaft 11, a mounting hole is formed in the center of the windshield cover 3, the transmission shaft 11 penetrates through the mounting hole, and the first gland 52 is fixedly connected with the end face of the mounting hole through a screw, so that the first gland 52 can effectively prevent impurities such as oil stains, water vapor or dust from entering the motor 1. The first seal 53 is disposed between the windshield cover 3 and the first gland 52, and is used to seal a gap between opposite ends of the windshield cover 3 and the first gland 52, and may specifically be an O-ring, but is not limited thereto. A second seal 54 is provided between the first gland 52 and the drive shaft 11 for sealing a gap between the first gland 52 and the drive shaft 11. The second seal 54 may be, but is not limited to, a lip seal. The arrangement of the first sealing element 53 and the second sealing element 54 can further improve the protection level, not only can prevent external oil dirt or water vapor and the like from entering the motor 1, but also can seal the internal lubricating oil of the first bearing 51, so that the motor 1 can run more stably and reliably, and the service life can be further prolonged.

The first gland 52 is integrally provided with an annular flange 521, and the annular flange 521 abuts against the outer ring of the adjacent first bearing 51. The transmission shaft 11 is provided with a first shaft shoulder 111, and the first shaft shoulder 111 abuts against the inner ring of the adjacent first bearing 51. Both the annular flange 521 and the first shoulder 111 cooperate to axially define the first bearing 51.

Further, the annular flange 521 is provided with at least one first elastic member 55, all the first elastic members 55 are abutted against the outer ring of the adjacent first bearing 51, the first elastic members 55 are kept in a compressed state, and the outer ring of the first bearing 51 is always abutted against, so that the machining error of the first gland 52 or the first shaft shoulder 111 can be compensated to a certain extent, and the position of the first bearing 51 can be reliably defined along the axial direction. The annular flange 521 is provided with a spring groove in which one end of the first resilient member 55 is fitted. The first elastic member 55 may be a generally cylindrical spring, but the type and the installation manner of the first elastic member 55 are not limited thereto.

The first gland 52 is provided with at least one radial oil injection hole 31, and each radial oil injection hole 31 penetrates through in the radial direction and is used for guiding oil to flow to the first bearing 51 in the radial direction, so that lubrication of the first bearing 51 is realized, and the service life of the first bearing 51 is prolonged.

As shown in fig. 8, the handpiece assembly further includes a second axial end assembly 6, where the second axial end assembly 6 is fixedly disposed at an end of the transmission shaft 11 near the driving gear 21, and the second axial end assembly 6 includes a second gland 61, an axial end retainer ring 62, and at least one second bearing 63, where the second gland 61 is fixedly disposed at an end of the transmission shaft 11 near the driving gear 21, and is used for axially defining the driving gear 21. The second gland 61 may be secured to the end of the drive shaft 11 by means of screws in particular. The shaft end check ring 62 is fixed at one end of the compressor head 2 close to the transmission shaft 11 by means of screws, and the shaft end check ring 62 can be an elastic gasket specifically, so as to play a role in locking. All second bearings 63 are located between the shaft end retainer 62 and the second gland 61 and between the drive shaft 11 and the compressor head 2 for supporting the drive shaft 11 to rotate the drive gear 21 relative to the compressor head 2. The second bearing 63 may be an angular contact bearing, but is not limited thereto. The second gland 61 is provided with an annular boss 611, the annular boss 611 abuts against the inner ring of the adjacent second bearing 63, and the shaft end retainer ring 62 abuts against the outer ring of the adjacent second bearing 63, so that both the second gland 61 and the shaft end retainer ring 62 together define the position of the second bearing 63 axially.

A second connecting key 22 is arranged between the transmission shaft 11 and the driving gear 21, and the second connecting key 22 is arranged in a key slot arranged at the second end of the transmission shaft 11, so that the driving gear 21 synchronously and axially rotates along with the transmission shaft 11.

As shown in fig. 8, the nose assembly further includes an oil seal assembly 7, which is sleeved on the transmission shaft 11 and fixedly connected with one end of the transmission shaft 11 near the compressor nose 2, so that the two ends of the motor 1 are jointly sealed by the windshield cover 3 and the oil seal assembly 7. The oil seal assembly 7 comprises an oil seal seat 71, a shaft sleeve 72, a third sealing piece 73 and a fourth sealing piece 74, wherein the oil seal seat 71 is sleeved on the transmission shaft 11 and is fixedly connected with one end of the motor 1, which is close to the compressor head 2, through screws. The shaft sleeve 72 is fixedly sleeved on the transmission shaft 11 and is located between the oil seal seat 71 and the transmission shaft 11, and is used for supporting the oil seal seat 71. The third seal 73 is provided between the oil seal seat 71 and the motor 1 for sealing a gap between opposite ends of the oil seal seat 71 and the motor 1. The third seal 73 may be, but not limited to, an O-ring. The fourth seal 74 is disposed between the annular boss of the oil seal seat 71 and the sleeve 72, for sealing a gap between the oil seal seat 71 and the sleeve 72. The third sealing element 73 and the fourth sealing element 74 are matched together, so that one end of the motor 1 close to the compressor head 2 is protected, oil stains in a gear box of the compressor head 2 are effectively prevented from entering the motor 1 to influence the normal operation of the motor 1, the protection level is further improved, and the service life is prolonged.

In addition, the transmission shaft 11 is provided with a second shoulder 112, and the second shoulder 112 abuts against one end of the sleeve 72, so as to axially define the sleeve 72.

The air inlet cooling assembly 4 comprises an air inlet cover 41, a fan blade 42, a limiting clamp spring 43 and a first connecting key 44, wherein the air inlet cover 41 is cylindrical, a plurality of air inlet holes are formed in the end portion of the air inlet cover 41, and the air inlet cover 41 is fixed to one end, far away from the compressor head 2, of the transmission shaft 11 through screws. The fan blade 42 is sleeved on the transmission shaft 11 and is arranged in the air inlet cover 41, and a plurality of blades are integrally arranged and used for driving airflow to flow. The limiting clamp spring 43 is fixedly arranged on the transmission shaft 11 and is used for axially limiting the fan blade 42. The first connection key 44 is disposed between the transmission shaft 11 and the fan blade 42, so that the fan blade 42 rotates synchronously with the transmission shaft 11. Of course, the structure of the intake air cooling assembly 4 is not limited thereto. It should be noted that, the air flow flows into the air inlet cover 41 from the end of the air inlet cover 41, flows along the radial direction of the air inlet cover 41 to the gap between the air inlet cover 41 and the motor 1 under the driving of the fan blade 42, and flows along the axial direction to the outer side surface of the motor 1.

The outer side surface of one end of the motor 1 far away from the compressor head 2 is provided with an annular avoidance groove 13, and an annular cylinder of the air inlet cover 41 extends along the axial direction until the annular cylinder intersects with the annular avoidance groove 13, so that air flow can flow into each diversion trench 12 under the guidance of the air inlet cover 41.

The embodiment of the utility model also discloses an air compressor, which comprises the machine head assembly and has the same beneficial effects.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. A head assembly of an air compressor, comprising:

a motor (1) with a transmission shaft (11) at the center;

a compressor head (2) and a wind shielding cover (3) which are respectively and fixedly connected with two ends of the motor (1);

an air inlet cooling assembly (4) fixedly arranged at one end of the transmission shaft (11) far away from the compressor head (2);

one end of the transmission shaft (11) close to the compressor head (2) is fixedly connected with a driving gear (21) of the compressor head (2), at least one edge flow guide groove (12) is arranged on the outer side face of the motor (1), and air flow flowing in by the air inlet cooling assembly (4) flows out of the outer side face of the motor (1) under the guidance of all the flow guide grooves (12).

2. The head assembly of an air compressor as claimed in claim 1, further comprising a first shaft end assembly (5), the first shaft end assembly (5) comprising:

at least one first bearing (51) arranged between the transmission shaft (11) and the windshield cover (3);

the first gland (52) is sleeved on the transmission shaft (11) and fixedly connected with the end face of the mounting hole arranged in the center of the windshield cover (3);

a first seal (53) provided between the windshield cover (3) and the first gland (52);

and a second seal (54) provided between the first gland (52) and the drive shaft (11).

3. The head assembly of the air compressor according to claim 2, characterized in that the first gland (52) is integrally provided with an annular flange (521), the annular flange (521) being in abutment with the outer ring of the adjacent first bearing (51); the transmission shaft (11) is provided with a first shaft shoulder (111), and the first shaft shoulder (111) is propped against the inner ring of the adjacent first bearing (51).

4. A head assembly of an air compressor according to claim 3, characterized in that said annular flange (521) is provided with at least one first elastic member (55), all of said first elastic members (55) being in abutment with the outer ring of the adjacent first bearing (51).

5. The head assembly of the air compressor as claimed in claim 2, wherein the first gland (52) is provided with at least one radial oil injection hole (31), each radial oil injection hole (31) being configured to guide oil to flow radially towards the first bearing (51).

6. The head assembly of an air compressor as claimed in any one of claims 1 to 5, further comprising a second shaft end assembly (6), the second shaft end assembly (6) comprising:

the second gland (61) is fixedly arranged at one end, close to the driving gear (21), of the transmission shaft (11);

the shaft end check ring (62) is fixedly arranged on the compressor head (2);

at least one second bearing (63) arranged between the drive shaft (11) and the compressor head (2);

wherein all the second bearings (63) are positioned between the shaft end check ring (62) and the second gland (61), the second gland (61) is provided with an annular boss (611) which is abutted against the inner ring of the adjacent second bearings (63), and the shaft end check ring (62) is abutted against the outer ring of the adjacent second bearings (63).

7. The head assembly of an air compressor according to any one of claims 1 to 5, further comprising an oil seal assembly (7), the oil seal assembly (7) comprising:

the oil seal seat (71) is sleeved on the transmission shaft (11) and fixedly connected with one end, close to the compressor head (2), of the motor (1);

a shaft sleeve (72) fixedly sleeved on the transmission shaft (11) and positioned between the oil seal seat (71) and the transmission shaft (11);

a third seal member (73) provided between the oil seal seat (71) and the motor (1);

a fourth seal member (74) provided between the annular boss of the oil seal seat (71) and the sleeve (72);

wherein the transmission shaft (11) is provided with a second shoulder (112) which is propped against the shaft sleeve (72).

8. The head assembly of an air compressor as claimed in any one of claims 1 to 5, wherein the air intake cooling assembly (4) comprises:

an air inlet cover (41) which is provided with a plurality of air inlet holes at the end part and is fixedly arranged at one end of the transmission shaft (11) far away from the compressor head (2);

a fan blade (42) sleeved on the transmission shaft (11) and arranged in the air inlet cover (41);

the limiting clamp spring (43) is fixedly arranged on the transmission shaft (11) and used for axially limiting the fan blade (42);

and a first connecting key (44) arranged between the transmission shaft (11) and the fan blade (42).

9. The head assembly of the air compressor according to claim 8, wherein an annular avoidance groove (13) is formed in the outer side surface of one end, far away from the compressor head (2), of the motor (1), and the annular cylinder of the air inlet cover (41) extends in the axial direction until the annular avoidance groove (13) is intersected.

10. An air compressor comprising a handpiece assembly as claimed in any one of claims 1 to 9.