CN114215906A

CN114215906A - Internal circulation oil circuit system for intelligently detecting oil supply state of air compressor

Info

Publication number: CN114215906A
Application number: CN202111529173.9A
Authority: CN
Inventors: 曹鑫; 胡荣华; 黎华勇; 曹崇禧; 马玉涛
Original assignee: Fangsheng Axle Suzhou Co ltd
Current assignee: Fangsheng Axle Suzhou Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-22

Abstract

The invention discloses an internal circulation oil circuit system for intelligently detecting the oil supply state of an air compressor, wherein a gear box assembly comprises a gear box body and a multi-stage speed-increasing transmission gear set arranged in the gear box body and a main body cover, an oil storage cavity is formed between the gear box body and the main body cover, the internal circulation oil circuit structure comprises an oil supply pump, an oil inlet copper pipe, an oil storage pore passage, a first atomizing nozzle and an oil pressure and temperature sensor, the oil supply pump is arranged on the outer wall of the lower part of the main body cover and is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set, the oil inlet copper pipe is communicated with the oil supply pump and extends upwards, the oil storage pore passage is arranged in a transition box body and is connected with the oil inlet copper pipe, the first atomizing nozzle is arranged at the front end of the transition box body and is communicated with the oil storage pore passage, and the oil pressure and temperature sensor is arranged in the oil storage pore passage; the oil supply pump is characterized in that an oil inlet duct of the oil supply pump is communicated with the oil storage cavity, and an oil return hole communicated with the oil storage duct and the oil storage cavity is formed in the transition box body. The invention realizes continuous and uniform lubrication of the internal gear of the air compressor, balanced heat in the system, high oil supply efficiency of the internal circulation oil circuit system, obvious heat dissipation effect and intelligent monitoring of the working state.

Description

Internal circulation oil circuit system for intelligently detecting oil supply state of air compressor

Technical Field

The invention belongs to the technical field of air compressors, and particularly relates to an internal circulation oil circuit system for intelligently detecting the oil supply state of an air compressor.

Background

The vehicle-mounted screw air compressor can provide a stable air pneumatic air source. The prior patent No. CN201821293843.5 discloses an oil supply system of a self-lubricating screw air compressor, which specifically comprises an oil-gas separator and a cooler arranged outside the air compressor, wherein lubricating oil is circularly cooled outside the air compressor, so that the volume of the air compressor is increased, the air compressor is not suitable for a vehicle-mounted chassis installation environment, secondly, the lubrication of an oil path is locally limited, the temperature is locally concentrated, a gear is in a long-term high-temperature environment, the lubrication effect is not obvious, and the probability of failure caused by abrasion is increased; the traditional air compressor lacks the monitoring detection to working oil pressure, and the opportunity of need filling lubricating oil is difficult to accurate judgement, easily appears the oil mass and is not enough or the condition that the high temperature still operates and uses, and the screw rod locking rate is higher in the air compressor machine, and the complete machine life-span is on the low side.

Disclosure of Invention

The invention aims to solve the technical problems and provides an internal circulation oil circuit system for intelligently detecting the oil supply state of an air compressor, so that continuous and uniform lubrication of an internal gear of the air compressor is realized, the heat in the system is balanced, the oil supply of the internal circulation oil circuit system is efficient, the heat dissipation effect is obvious, and the working state can be intelligently monitored. In order to achieve the purpose, the technical scheme of the invention is as follows:

the internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor comprises a gear box assembly, a main body cover, a machine head assembly and an internal circulation oil circuit structure, wherein the main body cover is detachably arranged on one side of the gear box assembly;

the gear box assembly comprises a gear box body and a multi-stage speed-increasing transmission gear set arranged in the gear box body and a main body cover, an oil storage cavity is formed between the gear box body and the main body cover,

the internal circulation oil circuit structure comprises an oil supply pump, an oil inlet copper pipe, an oil storage hole channel, a first atomizing nozzle and an oil pressure and temperature sensor, wherein the oil supply pump is arranged on the outer wall of the main body cover and is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set;

an oil inlet duct of the oil supply pump is communicated with the oil storage cavity, and an oil return hole communicated with the oil storage duct and the oil storage cavity is formed in the handpiece assembly.

Specifically, the machine head assembly comprises a machine head shell for mounting the male screw and the female screw and a transition box body detachably connected with the front end of the machine head shell, and a synchronous gear set sleeved on the male screw and the female screw is arranged in the transition box body.

Specifically, the multi-stage speed-increasing transmission gear set is in transmission connection with the female screw rotor.

Specifically, the front end of transition box and the lateral wall of gearbox housing can be dismantled and be connected, the bottom of aircraft nose casing can be dismantled with the main part top of gearbox housing and be connected.

Specifically, one side of the oil supply pump extends along the inside of the main cover to form an oil inlet channel communicated to the oil storage cavity, the bottom of the main cover is provided with an oil inlet communicated with the oil inlet channel, the other side of the oil supply pump extends along the inside of the main cover to form a flowing channel communicated to the oil storage cavity, and the flowing channel is provided with a second atomizing nozzle.

The oil supply pump comprises an outer pump shell detachably connected to the outer wall of the main body cover, an inner pump shell arranged in the outer pump shell, a fixed shaft which is in transmission connection with the multi-stage speed-increasing transmission gear set and penetrates through the inner pump shell to be connected with the inner cavity of the outer pump shell, and a gear rotor set which is sleeved on the fixed shaft and located between the inner pump shell and the outer pump shell.

Specifically, the gerotor set is including the inner rotor of cover locating on the fixed axle and the outer rotor of cover locating the inner rotor periphery, the circumference of inner rotor is equipped with the tooth's socket, the inside inner flow way that is equipped with the intercommunication tooth's socket of inner pump shell, one side intercommunication oil feed pore of inner flow way, the opposite side intercommunication flow pore of inner flow way.

Specifically, the male screw and the female screw are respectively provided with a bearing assembly, and the bearing assembly comprises a group of bearings sleeved on the front sections of the male screw and the female screw, an inner spacer ring arranged between the group of bearings and contacting with the male screw and the female screw, and an outer spacer ring arranged between the group of bearings and contacting with the transition box body; the outer space ring is provided with a group of radial corresponding through holes, an overflow ring is formed between the inner space ring and the outer space ring, one through hole positioned above the overflow ring is communicated with the oil storage hole channel, and the other through hole positioned below the overflow ring is communicated with the oil return hole.

Specifically, the front end of the transition box body is provided with a bearing pressing plate for limiting the bearing assembly, and the bearing pressing plate is provided with a notch for avoiding the oil return hole.

Compared with the prior art, the internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor has the main beneficial effects that:

the oil supply pump is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set, an external power supply driving module is omitted, the assembly is more suitable for a vehicle-mounted air compressor, and the assembly structure of the oil supply pump and the main body cover is optimized; the lubricating oil in the oil storage cavity is internally circulated through the oil supply pump, external circulation equipment is not needed, and the air compressor is compact in overall structure and convenient to install; lubricating oil in the oil supply pump is lifted into the oil storage pore passage through the flowing pore passage and the oil inlet copper pipe, and the multistage speed-increasing transmission gear set in the oil storage cavity is sprayed and radiated through the atomizing nozzle, so that the lubrication is continuous and uniform, and the heat in the system is balanced; the oil inlet copper pipe structure is arranged, so that excessive hidden runners are prevented from being formed on the gearbox body, the manufacturing and forming process is simplified, and the oil supply of the internal circulation oil circuit system is efficient; the bottom surfaces of the gear box body and the main body cover are provided with a plurality of heat dissipation ribs, the gear box body is made of HT250 gray cast iron, the thermal stability is good, the main body cover is made of A356.0 aluminum alloy, lubricating oil is stored and dissipated in the gear box body, the heat dissipation effect is obvious, and the heat dissipation work can be continued even in hot summer; lubricating oil in the oil storage pore channel is decompressed through the oil return hole, and simultaneously, bearing assemblies on the male and female screw rotors are lubricated, so that the probability of locking of the male and female screw rotors is reduced; the oil storage pore channel and the bearing assembly are arranged in the detachable transition box body, when local problems occur, the whole machine does not need to be disassembled, quick maintenance or part replacement is realized, and the maintenance and replacement cost of the whole machine is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an air compressor according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of the reservoir chamber in this embodiment;

FIG. 3 is a schematic structural view of a multi-stage step-up transmission gear set in the present embodiment;

FIG. 4 is a schematic view of the bottom structure of the gear housing in this embodiment;

FIG. 5 is a schematic side view of the gear housing in this embodiment;

FIG. 6 is a schematic sectional view of the oil feed pump in the present embodiment;

FIG. 7 is a schematic structural view of the supply pump of this embodiment with the outer pump casing removed;

FIG. 8 is a schematic structural diagram of a head assembly according to the present embodiment;

FIG. 9 is a schematic partial cross-sectional view of the female screw rotor in this embodiment;

fig. 10 is a schematic cross-sectional view of the oil storage hole in the present embodiment;

the figures in the drawings represent:

the gear box assembly 1, the gear box body 11, the multistage speed-increasing transmission gear set 12, the bearing seat 13, the oil storage cavity 14, the primary driving transmission shaft 15, the primary driving gear 16, the secondary driven transmission shaft 17, the primary driven gear 18, the secondary driving gear 19, the main body cover 2, the oil inlet 21, the handpiece assembly 3, the handpiece shell 31, the transition box body 32, the synchronous gear set 33, the female screw rotor 34, the secondary driven gear 35, the bearing pressing plate 36, the gap 37, the oil supply pump 4, the oil inlet copper pipe 41, the oil storage channel 42, the first atomizing nozzle 43, the oil inlet channel 44, the oil outlet 45, the flow channel 46, the second atomizing nozzle 47, the outer pump shell 5, the inner pump shell 51, the fixed shaft 52, the shaft 53, the outer rotor 54, the internal rotor 55 tooth grooves, the internal rotor 56 flow channel, the oil return hole 57, the bearing 6, the internal rotor ring 61, the external spacer ring 62, the through holes 63, the overflow ring 64 and the heat dissipation ribs 7.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example (b):

referring to fig. 1-10, the present embodiment is an internal circulation oil circuit system for intelligently detecting an oil supply state of an air compressor, and the internal circulation oil circuit system includes a gear box assembly 1, a main body cover 2 detachably disposed on one side of the gear box assembly 1, a machine head assembly 3 detachably disposed on the other side of the gear box assembly 1, and an internal circulation oil circuit structure disposed between the main body cover 2 and the machine head assembly 3.

The gear box assembly 1 comprises a gear box body 11 and a multi-stage speed-increasing transmission gear set 12 arranged in the gear box body 11 and the main body cover 2. The gear box body 11 is of an L-shaped structure, a bearing seat 13 is installed on the upper portion of the side wall of the gear box body 11, and an oil storage cavity 14 is formed between the gear box body 11 and the main body cover 2.

The multi-stage speed-increasing transmission gear set 12 includes a connecting bearing block 13, a first-stage driving transmission shaft 15 extending outwards and penetrating through the main body cover 2, a first-stage driving gear 16 sleeved on the first-stage driving transmission shaft 15, a second-stage driven transmission shaft 17 penetrating through the main body cover 2 and connecting the lower part of the gear box body 11, a first-stage driven gear 18 sleeved on the second-stage driven transmission shaft 17 and meshed with the first-stage driving gear 16, and a second-stage driving gear 19 sleeved on the second-stage driven transmission shaft 17 and located behind the first-stage driven gear 18.

The handpiece assembly 3 comprises a handpiece shell 31 for mounting male and female screws and a transition box body 32 detachably connected with the front end of the handpiece shell 31, a synchronous gear set 33 sleeved on the male and female screws is arranged in the transition box body 32, the multi-stage speed-increasing transmission gear set 12 is in transmission connection with a female screw rotor 34, and a second-stage driven gear 35 meshed with the second-stage driving gear 19 is sleeved on the female screw rotor 34 and positioned in front of the synchronous gear set 33. The front end of the transition box body 32 is detachably connected with the side wall of the gear box body 11, and the bottom of the machine head shell 31 is detachably connected with the top of the main body of the gear box body 11.

The internal circulation oil path structure comprises an oil supply pump 4 which is arranged on the outer wall of the lower part of the main body cover 2 and is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set 12, an oil inlet copper pipe 41 which is communicated with the oil supply pump 4 and extends upwards, an oil storage hole passage 42 which is arranged in the transition box body 32 and is connected with the oil inlet copper pipe 41, a first atomizing nozzle 43 which is arranged at the front end of the transition box body 32 and is communicated with the oil storage hole passage 42, and an oil pressure and temperature sensor (not shown in the figure) which is arranged in the oil storage hole passage 42; the oil inlet port passage 44 of the supply pump 4 is provided in communication with the oil reservoir chamber 14.

The first atomizing nozzle 43 is disposed from top to bottom toward the plurality of sets of speed-increasing transmission gear sets 12 and the synchronizing gear set 33.

An oil inlet channel 44 communicated to the oil storage cavity 14 is formed in one side of the oil supply pump 4 along the inner portion of the main body cover 2 in an extending mode, and an oil inlet 21 communicated with the oil inlet channel 44 is formed in the bottom of the main body cover 4. The other side of the oil supply pump 4 extends along the inside of the main cover body 2 to form a flow channel 46 communicated to the oil storage cavity 14, a second atomizing nozzle 47 is arranged on the flow channel 46, and the second atomizing nozzle 47 is arranged from bottom to top towards the multiple groups of speed-increasing transmission gear sets 12. An oil discharge port 45 communicated with the oil storage cavity 14 is formed in the bottom of the gear box body 11.

The oil supply pump 4 comprises an outer pump shell 5 detachably connected with the outer wall of the main body cover 2, an inner pump shell 51 arranged in the outer pump shell 5, a fixed shaft 52 connected with the outer end of the secondary driven transmission shaft 17 and penetrating through the inner pump shell to be connected with the inner cavity of the outer pump shell 5, and a gear rotor set sleeved on the fixed shaft 52 and positioned between the inner pump shell 51 and the outer pump shell 5. The gerotor set includes an inner rotor 53 sleeved on the fixed shaft 52 and an outer rotor 54 sleeved on the outer periphery of the inner rotor 53, and a tooth groove 55 is formed in the circumferential direction of the inner rotor 53. An inner flow passage 56 communicated with the tooth groove 55 is arranged in the inner pump shell 51, one side of the inner flow passage 56 is communicated with the oil inlet duct 44, and the other side of the inner flow passage 56 is communicated with the flow duct 46. The fixed shaft 52 is driven to rotate by the secondary driven transmission shaft 17, the fixed shaft 52 drives the gear rotor set to rotate, the lubricating oil in the oil storage cavity 14 is conveyed to the inner flow channel 56 through the oil inlet duct 44, enters the tooth grooves 55 through one side of the inner flow channel 56, is discharged to the flow duct 46 from the other side of the inner flow channel 56, is sprayed out by the second atomizing nozzle 47, and meanwhile, the lubricating oil in the flow duct 46 enters the oil inlet copper pipe 41 and the oil storage duct 42 and is sprayed out by the first atomizing nozzle 43.

An oil return hole 57 communicating the oil storage hole 42 and the oil storage cavity 14 is arranged in the transition box body 32, and pressure of lubricating oil in the oil storage hole 42 is relieved. Bearing assemblies are respectively arranged on the male screw and the female screw, a bearing pressure plate 36 for limiting the bearing assemblies is arranged at the front end of the transition box body 32, and each bearing assembly comprises a group of bearings 6 sleeved on the front sections of the male screw and the female screw, an inner spacing ring 61 arranged between the group of bearings 6 and contacting the male screw and the female screw, and an outer spacing ring 62 arranged between the group of bearings 6 and contacting the transition box body 32; the outer space ring 62 is provided with a group of through holes 63 corresponding to the radial direction, an overflow ring 64 is formed between the inner space ring 61 and the outer space ring 62, one through hole 63 positioned above the overflow ring 64 is communicated with the oil storage duct 42, and the other through hole 63 positioned below the overflow ring 64 is communicated with the oil return hole 57.

The bearing pressure plate 36 is provided with a notch 37 which avoids the oil return hole 57, the lubricating oil penetrates through one through hole 63 from the oil storage hole 42 and enters the overflow ring 64, then enters the oil return hole 57 from the other through hole 63 and enters the oil storage cavity 14 along the trend of the oil return hole 57, and the lubricating oil cannot enter the male and female screw working cavities of the handpiece shell 31 under the sealing action. The oil adequately lubricates the bearing assembly while circulating the oil between the transition box 32 and the oil reservoir 14.

When the embodiment is applied, the oil supply pump 4 is in synchronous transmission connection with the multi-stage speed-increasing transmission gear set 12, an external power supply driving module is omitted, the assembly is more suitable for a vehicle-mounted air compressor, and the assembly structure of the oil supply pump 14 and the main body cover 2 is optimized; lubricating oil in the oil storage cavity 14 is internally circulated through the oil supply pump 4, external circulation equipment is not needed, and the air compressor is compact in overall structure and convenient to install; lubricating oil in the oil supply pump 4 is lifted into the oil storage pore passage 42 through the flowing pore passage 46 and the oil inlet copper pipe 41, and is sprayed and radiated to the multi-stage acceleration transmission gear set 12 in the oil storage cavity 14 through the atomizing nozzle, so that the lubrication is continuous and uniform, and the heat in the system is balanced; the oil inlet copper pipe 41 structure is arranged, so that excessive hidden runners are prevented from being formed on the gear box body 11, the manufacturing and forming process is simplified, and the oil supply of the internal circulation oil circuit system is high in efficiency; the bottom surfaces of the gear box body 11 and the main body cover 2 are provided with a plurality of heat dissipation ribs 7, the gear box body 11 is made of HT250 gray cast iron, the thermal stability is good, the main body cover 2 is made of A356.0 aluminum alloy, lubricating oil is stored and dissipated in the gear box body 11, the heat dissipation effect is obvious, and the heat dissipation work can be continued even in hot summer; lubricating oil in the oil storage pore channel is decompressed through the oil return hole, and simultaneously, bearing assemblies on the male and female screw rotors are lubricated, so that the probability of locking of the male and female screw rotors is reduced; the oil pressure and temperature sensors are arranged in the oil storage pore passage 42, when the working oil pressure is unstable or the temperature abnormal change exceeds a set value, the oil pressure and temperature sensors transmit signals to the cab, an alarm is given, the fault can be maintained and checked in time, the oil storage pore passage 42 and the bearing assembly are arranged in the detachable transition box body 32, when a local problem occurs, the whole machine does not need to be disassembled, the rapid maintenance or part replacement is realized, and the maintenance and replacement cost of the whole machine is reduced.

In the description of the present invention, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. Internal circulation oil piping system of intellectual detection system air compressor machine fuel feeding state, its characterized in that: the gear box assembly comprises a gear box assembly, a main body cover detachably arranged on one side of the gear box assembly, a machine head assembly detachably arranged on the other side of the gear box assembly, and an internal circulation oil circuit structure arranged between the main body cover and the machine head assembly;

2. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 1, is characterized in that: the machine head assembly comprises a machine head shell for mounting the male screw and the female screw and a transition box body detachably connected with the front end of the machine head shell, and a synchronous gear set sleeved on the male screw and the female screw is arranged in the transition box body.

3. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 2, is characterized in that: and the multi-stage speed-increasing transmission gear set is in transmission connection with the female screw rotor.

4. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 2, is characterized in that: the front end of the transition box body is detachably connected with the side wall of the gear box body, and the bottom of the machine head shell is detachably connected with the top of the main body of the gear box body.

5. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 1, is characterized in that: one side of the oil supply pump extends along the inside of the main cover body to form an oil inlet channel communicated to the oil storage cavity, an oil inlet communicated with the oil inlet channel is formed in the bottom of the main cover body, a flowing channel communicated to the oil storage cavity is formed in the other side of the oil supply pump extends along the inside of the main cover body to form a flowing channel, and a second atomizing nozzle is arranged on the flowing channel.

6. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 5, is characterized in that: the oil supply pump comprises an outer pump shell detachably connected with the outer wall of the main body cover, an inner pump shell arranged in the outer pump shell, a fixed shaft which is in transmission connection with the multi-stage speed-increasing transmission gear set and penetrates through the inner pump shell to be connected with the inner cavity of the outer pump shell, and a gear rotor set which is sleeved on the fixed shaft and is positioned between the inner pump shell and the outer pump shell.

7. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 6, is characterized in that: the gear rotor set comprises an inner rotor and an outer rotor, the inner rotor is sleeved on the fixed shaft, the outer rotor is sleeved on the periphery of the inner rotor, tooth grooves are formed in the circumferential direction of the inner rotor, an inner flow passage communicated with the tooth grooves is formed in the inner pump shell, one side of the inner flow passage is communicated with an oil inlet hole channel, and the other side of the inner flow passage is communicated with a flowing hole channel.

8. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 2, is characterized in that: the female screw and the male screw are respectively provided with a bearing assembly, and the bearing assembly comprises a group of bearings sleeved on the front sections of the female screw and the male screw, an inner spacer ring arranged between the group of bearings and contacting with the female screw and the male screw, and an outer spacer ring arranged between the group of bearings and contacting with the transition box body; the outer space ring is provided with a group of radial corresponding through holes, an overflow ring is formed between the inner space ring and the outer space ring, one through hole positioned above the overflow ring is communicated with the oil storage hole channel, and the other through hole positioned below the overflow ring is communicated with the oil return hole.

9. The internal circulation oil circuit system for intelligently detecting the oil supply state of the air compressor according to claim 8, is characterized in that: the front end of the transition box body is provided with a bearing pressing plate for limiting the bearing assembly, and the bearing pressing plate is provided with a notch for avoiding the oil return hole.