CN112728388A - Lubricating oil distributor - Google Patents
Lubricating oil distributor Download PDFInfo
- Publication number
- CN112728388A CN112728388A CN202110018179.3A CN202110018179A CN112728388A CN 112728388 A CN112728388 A CN 112728388A CN 202110018179 A CN202110018179 A CN 202110018179A CN 112728388 A CN112728388 A CN 112728388A
- Authority
- CN
- China
- Prior art keywords
- lubricating oil
- distributor
- rotating disc
- oil flow
- power source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 111
- 230000001050 lubricating effect Effects 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 20
- 230000008676 import Effects 0.000 description 10
- 238000005461 lubrication Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N25/00—Distributing equipment with or without proportioning devices
- F16N25/04—Distributing equipment with or without proportioning devices with rotary distributing member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2250/00—Measuring
- F16N2250/04—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a lubricating oil distributor, at least comprising a distributor for distributing lubricating oil to different lubricating points, a power source for driving the distributor and a controller for controlling the power source, wherein the distributor at least comprises: the rotating disc is used for arranging a lubricating oil flow passage I for the circulation of lubricating oil and can be driven by a power source to rotate around the axis of the rotating disc; the distributor base is used for installing the rotating disc, a plurality of lubricating oil flow passages II are uniformly arranged on the distributor base around the axis of the rotating disc, and the power source can be controlled by the controller to drive the rotating disc to rotate, so that the lubricating oil flow passages I are sequentially communicated with the lubricating oil flow passages II; the lubricating oil distributor not only can distribute lubricating oil to lubricating points needing lubricating everywhere, but also has the advantages of simple structure, convenience in processing, manufacturing, production and assembly of the distributor, improvement of production efficiency, reduction of production cost, and reduction of abrasion among parts, thereby prolonging the service life of the distributor and improving the precision of lubricating oil distribution.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to a lubricating oil distributor.
Background
Currently, in lubrication systems for large machines, especially progressive lubrication systems, a plunger dispenser is typically used to dispense lubricant to one or more lubrication points by a metered manner. These dispensers are usually realized in a purely mechanical structure, with a metered amount of lubricant being dispensed as the stroke of each plunger is metered. The plunger is controlled to move in one or the other direction depending on the pressure applied and the amount of lubricant dispensed can be determined by counting the number of strokes or time the plunger is moved.
For proper operation, i.e. to determine whether the plunger has performed the intended stroke correctly, dispensers that are common today use a stroke sensor to monitor the movement of the plunger. In addition, in order to extrude the grease to the lubricating points at different distances, high pressure of hundreds of bars exists in the distributor, so the sleeve and the plunger are of a closed structure. This design places very high demands on the tightness of the components and, because of the reciprocating movement of the plunger, wear inevitably occurs which, after a certain period of use, affects the performance of the components, resulting in inaccurate lubricant dispensing. Meanwhile, the lubricant is deposited due to the generation of the abrasion clearance of the parts, and the lubricant is coagulated into blocks for a long time, so that the moving structure of the plunger is blocked.
Therefore, in order to solve the above problems, a lubricant distributor with simple structure, easy production and manufacture, low cost and high reliability is needed.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the drawbacks of the prior art, and to provide a lubricant distributor, which has a simple structure, is easy to manufacture, and has low cost and high reliability.
The lubricant distributor of the present invention includes at least a distributor for distributing lubricant to different lubrication points, a power source for driving the distributor, and a controller for controlling the power source, the distributor including at least:
the rotating disc is used for arranging a lubricating oil flow passage I for the circulation of lubricating oil and can be driven by a power source to rotate around the axis of the rotating disc;
the distributor base is used for installing the rotating disc, a plurality of lubricating oil flow passages II are uniformly arranged on the distributor base around the axis of the rotating disc, and the power source can be controlled by the controller to drive the rotating disc to rotate, so that the lubricating oil flow passages I are sequentially communicated with the lubricating oil flow passages II.
Furthermore, the distributor also comprises a fixed disc, the fixed disc and the rotating disc are coaxially arranged and fixed on the distributor seat, and the plurality of lubricating oil flow passages II are arranged on the fixed disc.
Further, the lubricating oil lubricating device further comprises a pressure sensor, wherein the pressure sensor is fixedly arranged on one lubricating oil flow passage II and is used for plugging the lubricating oil flow passage II.
Furthermore, lubricating oil runner I is including I import that is used for lubricating oil to flow in, be used for lubricating oil to flow out and the export I of intercommunication lubricating oil runner II, connect I and export I connection runner I of import, the distance of I to the rolling disc axis of import is less than the distance of I to the rolling disc axis of export.
Furthermore, the inlet I, the outlet I and the connecting flow channel I are located on the same plane.
Further, still include the overflow valve, the overflow valve sets up in the rolling disc and communicates in connecting flow channel I.
Furthermore, the rotating disc is in a conical shape, and the inlet I is formed in the small end of the conical rotating disc.
Further, the power source is a stepping motor.
Furthermore, the number of the lubricating oil flow passages II is eight.
The distributor is characterized by further comprising a supporting seat, wherein the supporting seat is arranged on one side, away from the fixed disk, of the rotating disk in the axis direction of the rotating disk and is fixed on the distributor seat, and the two ends of the rotating disk can rotate around the axis of the rotating disk and are respectively arranged on the supporting seat and the fixed disk.
The invention has the beneficial effects that: the lubricating oil distributor disclosed by the invention not only can distribute lubricating oil to lubricating points needing lubricating, but also has the advantages of simple structure, convenience in processing, manufacturing and production assembly of the distributor, improvement on the production efficiency, reduction in the production cost, and reduction in the abrasion among parts, so that the service life of the distributor and the precision of the lubricating oil distribution are improved, and the reliability and the safety of the distributor are also improved.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a structural view of the fixed disk of the present invention.
Detailed Description
FIG. 1 is a schematic structural view of the present invention, and FIG. 2 is a structural view of a fixing disk of the present invention; as shown in the drawings, the lubricant distributor in the present embodiment includes at least a distributor for distributing lubricant to different lubrication points, a power source 6 for driving the distributor, and a controller for controlling the power source, the distributor including at least: the rotating disc 4 is used for arranging a lubricating oil flow passage I41 for the circulation of lubricating oil and can be driven by the power source 6 to rotate around the axis of the rotating disc; the distributor base 9 is used for installing the rotating disc 4, a plurality of lubricating oil flow passages II 5a are uniformly arranged on the distributor base 9 around the axis of the rotating disc, and the power source 6 can be controlled by the controller to drive the rotating disc 4 to rotate, so that the lubricating oil flow passages I41 are sequentially communicated with the lubricating oil flow passages II 5 a. The lubricating oil distributor adopting the structure can distribute lubricating oil to lubricating points needing lubricating, has simple structure, is convenient for processing, manufacturing and production assembly of the distributor, improves the production efficiency, reduces the production cost, and can reduce the abrasion among parts, thereby improving the service life of the distributor and the precision of the distribution of the lubricating oil, and avoiding the shortage of lubricating oil caused by waste or lack of lubricating oil caused by excessive lubricating oil; the power source 6 is controlled by the controller to drive the rotating disc 4 to rotate, when the lubricating oil flow passage I41 is communicated with one lubricating oil flow passage II 5a, the controller controls the power source 6 to stop rotating, so that the lubricating oil flows from the oil tank 1 through the oil delivery hose 2 through the lubricating oil flow passage I41 and the lubricating oil flow passage II 5a corresponding lubricating points for lubrication (the flow direction of the lubricating oil is in the arrow direction in the attached drawing 1 in the specification) through the lubricating oil pump, after the lubricating oil amount flowing to the lubricating points is enough, the controller controls the power source to drive the rotating disc to rotate, so that when the lubricating oil flow passage I41 is communicated with the next lubricating oil flow passage II 5a, the controller controls the power source 6 to stop, the lubricating oil flows to the lubricating points corresponding to the next lubricating oil flow passage II through the lubricating oil flow passage I41 and the next lubricating oil flow passage II 5a for lubrication, and when the lubricating oil flows to the lubricating points corresponding to the lubricating oil flow passage II in Interval determination), the controller controls the power source to drive the rotating disc to rotate to enter the next lubricating oil flow passage II, and the circulation is performed in sequence, which is not described in detail herein. Be provided with position sensor in lubricating oil runner I41, the II 5a of lubricating oil runner for when lubricating oil runner I41, the II 5a of lubricating oil runner communicate, position sensor is controller transmission control signal, makes controller control driving source 6 stop, after the settlement time, restarts 6 drive rolling discs 4 rotations of power supply, and the controller is through receiving signal, and the circuit structure of drive/stop power supply is prior art, and no longer repeated here.
The lubricating oil flow passage I41 can be opened in the rotating disc 4 and can also be independently arranged outside the rotating disc, and details are not repeated herein, the power source 6 can directly drive the rotating disc to rotate, and an intermediate transmission mechanism can also be arranged to drive the rotating disc to rotate, and details are not repeated herein; the lubricating oil flow passages II can be directly arranged on the distributor base and can also be arranged on an intermediate member of the distributor base, and can be selected according to specific requirements, and are not described again. The distributor base 9 is used for installing the distributor and the power source, and the specific structure thereof is well known by those skilled in the art and will not be described in detail herein.
In this embodiment, the distributor further includes a fixed disk 5, the fixed disk 5 and the rotating disk 4 are coaxially disposed and fixed to the distributor base 9, and the plurality of lubricating oil flow passages ii 5a are opened in the fixed disk 5; by adopting the structure, the lubricating oil flow channel II 5a can be conveniently processed and manufactured, so that the manufacturing precision is improved, the lubricating oil flow channel I41 can be conveniently communicated, the lubricating oil can smoothly circulate, the production cost is reduced, and the lubricating oil blocking device also has the advantage of being blocked by the lubricating oil.
In the embodiment, the lubricating oil lubricating device further comprises a pressure sensor 7, wherein the pressure sensor 7 is fixedly arranged on one lubricating oil flow channel II 5a and seals the lubricating oil flow channel II; by arranging the pressure sensor 7, when the rotating disc 4 rotates to the position, the pressure sensor transmits the detected pressure value to the controller, when the pressure of the lubricating oil is insufficient, the controller controls the lubricating oil pump to pressurize the lubricating oil to meet the pressure requirement, so that the pressure is calibrated, the flow rate (the flow rate is determined by the pressure and time) of the lubricating oil is kept stable, the lubricating oil is pressurized by the lubricating oil pump and is controlled by the controller to be the prior art, and the description is omitted; and the pressure sensor 7 and one lubricating oil flow passage II 5a are sealed and blocked by threads.
In this embodiment, the lubricating oil flow passage i 41 includes an inlet i 41a for flowing in lubricating oil, an outlet i 41c for flowing out lubricating oil and communicating with the lubricating oil flow passage ii, and a connecting flow passage i 41b connecting the inlet i 41a and the outlet i 41c, and a distance from the inlet i 41a to the axis of the rotating disk is smaller than a distance from the outlet i 41c to the axis of the rotating disk; by adopting the lubricating flow channel I41 with the structure, the circulation of lubricating oil is facilitated, and the structure compactness is improved; through inciting somebody to action I41 a is less than the distance of export I41 c to the rolling disc axis to the distance of rolling disc axis, can not only reduce the inertia of rolling disc, increases 4 pivoted reliabilities of rolling disc, still has the advantage of being convenient for arrange export I41 c, export 41c sets up in leaning on fixed disk one end along the rolling disc axis direction, import 41a keeps away from fixed disk one end setting along the rolling disc axis direction, import I41 a does to the meaning that the distance of rolling disc axis is less than the distance of export I41 c to the rolling disc axis the axis of import 41a is less than the distance of export I41 c to the rolling disc axis to the distance of rolling disc axis.
In this embodiment, the inlet i 41a, the outlet i 41c and the connecting flow channel i 41b are located on the same plane; by adopting the structure, the processing and the manufacturing are convenient, the circulation time of the lubricating oil can be reduced, and the lubricating oil waste caused by too long circulation path of the lubricating oil is avoided; the meaning of being located the coplanar is that the central axes of the inlet I, the outlet I and the connecting flow channel I are located the coplanar, and of course, the connecting flow channel 41b can also be set to be spiral, which is not described herein again.
In the embodiment, the device further comprises an overflow valve 8, wherein the overflow valve 8 is arranged on the rotating disc 4 and is communicated with the connecting flow channel I41; by arranging the overflow valve 8, when the pressure of the lubricating oil in the connecting flow channel I41 is overlarge, the lubricating oil can be discharged through the overflow valve, so that the reliability and the safety of the distributor are improved; the side surface of the rotating disc 4 is also provided with an overflow flow passage 42 communicated with the connecting flow passage 41b, and the overflow valve 8 is arranged in the overflow flow passage 42, so that when the pressure in the lubricating oil flow passage I41 is overlarge, the pressure is relieved through the overflow valve, and the rotating disc is prevented from being damaged due to overlarge pressure.
In the embodiment, the rotating disc 4 is in a conical shape, and the inlet I41 a is arranged at the small end of the conical rotating disc; by adopting the structure, the structure compactness is increased, the structure of the rotating disc is reduced, and the production cost is reduced; the rotating disc is in a conical shape, the small end of the conical shape is arranged close to one side of the oil hose 2, so that the inlet I41 a is arranged at the small end of the rotating disc, the inlet 41a and the axis of the rotating disc are coaxially arranged, and the outlet 41c is arranged at the large end of the rotating disc.
In this embodiment, the power source 6 is a stepping motor 6; by adopting the stepping motor, the stepping motor has the advantages of high control precision, light weight, high reliability and the like; the stepping motor is also provided with a brake, so that the stepping motor is braked after being stopped, the rotating disc 4 is braked, the rotating disc is prevented from rotating due to the flowing of lubricating oil, and the reliability of the distributor is improved.
In this embodiment, eight lubricating oil flow passages ii 5a are provided; eight lubricating oil flow passages II are adopted so as to meet the lubricating requirements of the lubricating points, and other numbers can be selected according to the number of the required lubricating points, which is not described again; one of the eight lubricating oil flow passages II 5a is blocked and provided with a pressure sensor 7.
In the embodiment, the distributor base further comprises a supporting seat 3, wherein the supporting seat 3 is arranged on one side, away from the fixed disc 5, of the rotating disc in the axis direction of the rotating disc and is fixed on the distributor base 9, and two ends of the rotating disc 4 can rotate around the axis of the rotating disc and are respectively arranged on the supporting seat 3 and the fixed disc 4; through the arrangement of the supporting seat 3, the structure of the distributor seat 9 is simplified, the production and the manufacture are convenient, the rotating disc 4 can rotate smoothly, the two ends of the rotating disc can rotate around the axis of the rotating disc and are respectively arranged on the supporting seat and the fixed disc, namely the two ends of the rotating disc 4 are respectively in rotating connection with the supporting seat 3 and the fixed disc 5 and rotate around the axis of the rotating disc, the rotating disc is a circular rotating disc, the supporting seat 3 is provided with a supporting shaft I31 used for being in rotating connection with the rotating disc 4, one side of the rotating disc 4 close to the supporting seat is provided with a counter bore I used for being in rotating fit with the supporting shaft I31, one side of the fixed disc 5 close to the rotating disc is provided with a supporting shaft II 51 in rotating connection with the rotating disc, one side of the rotating disc close to the fixed disc is provided with a counter bore II used for being matched with, the counter bore I of the rotating disc is matched with the support shaft I, and the counter bore II of the rotating disc is matched with the support shaft II, so that the rotating disc can rotate around the support shaft I and the support shaft II under the driving of a power source; the connecting hole 32 that is used for communicateing import I is offered along rolling disc axis direction to the supporting seat, connecting hole 32 is seted up with the rolling disc axis is coaxial, can increase compact structure nature, can also reduce 4 pivoted influences to the rolling disc, import I sets up with the rolling disc axis is coaxial, is convenient for and connecting hole 32 intercommunication, can also increase rolling disc pivoted reliability, through with oil hose connection in connecting hole 32 one end (keeping away from I one end of import) for when the rolling disc rotates, also can not influence oil hose and send lubricating oil into import I41 a through connecting hole 32.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A lubricant distributor, characterized by: comprising at least a distributor for distributing lubricating oil to different lubricating points, a power source for driving the distributor and a controller for controlling the power source, the distributor comprising at least:
the rotating disc is used for arranging a lubricating oil flow passage I for the circulation of lubricating oil and can be driven by a power source to rotate around the axis of the rotating disc;
the distributor base is used for installing the rotating disc, a plurality of lubricating oil flow passages II are uniformly arranged on the distributor base around the axis of the rotating disc, and the power source can be controlled by the controller to drive the rotating disc to rotate, so that the lubricating oil flow passages I are sequentially communicated with the lubricating oil flow passages II.
2. The oil distributor of claim 1, wherein: the distributor further comprises a fixed disc, the fixed disc and the rotating disc are coaxially arranged and fixed on the distributor base, and the lubricating oil flow passages II are arranged in the fixed disc.
3. The oil distributor of claim 2, wherein: the lubricating oil flow passage I is fixedly arranged on the lubricating oil flow passage II, and the lubricating oil flow passage I is plugged.
4. The oil distributor of claim 3, wherein: the lubricating oil flow channel I comprises an inlet I for flowing lubricating oil, an outlet I used for flowing the lubricating oil and communicated with the lubricating oil flow channel II, and a connecting flow channel I for connecting the inlet I with the outlet I, wherein the distance from the inlet I to the center of the rotary table is smaller than the distance from the outlet I to the center of the rotary table.
5. The oil distributor of claim 4, wherein: the inlet I, the outlet I and the connecting flow channel I are located on the same plane.
6. The oil distributor of claim 5, wherein: the overflow valve is arranged on the rotating disc and communicated with the connecting flow channel I.
7. The oil distributor of claim 6, wherein: the rotating disc is in a conical shape, and the inlet I is formed in the small end of the conical rotating disc.
8. The oil distributor of claim 7, wherein: the power source is a stepping motor.
9. The oil distributor of claim 8, wherein: eight lubricating oil flow passages II are provided.
10. The oil distributor of claim 2, wherein: the distributor is characterized by further comprising a supporting seat, wherein the supporting seat is arranged on one side, away from the fixed disk, of the rotating disk in the axis direction of the rotating disk and is fixed on the distributor seat, and the two ends of the rotating disk can rotate around the axis of the rotating disk and are respectively arranged on the supporting seat and the fixed disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018179.3A CN112728388A (en) | 2021-01-07 | 2021-01-07 | Lubricating oil distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018179.3A CN112728388A (en) | 2021-01-07 | 2021-01-07 | Lubricating oil distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728388A true CN112728388A (en) | 2021-04-30 |
Family
ID=75591044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110018179.3A Pending CN112728388A (en) | 2021-01-07 | 2021-01-07 | Lubricating oil distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728388A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020144864A1 (en) * | 2001-04-04 | 2002-10-10 | Siegfried Kramer | Multi-point lubrication distribution system |
| CN108916626A (en) * | 2017-12-25 | 2018-11-30 | 辽宁三三工业有限公司 | A kind of lubricating system and method |
| CN214198129U (en) * | 2021-01-07 | 2021-09-14 | 重庆安特瑞润滑设备有限公司 | Lubricating oil distributor device |
-
2021
- 2021-01-07 CN CN202110018179.3A patent/CN112728388A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020144864A1 (en) * | 2001-04-04 | 2002-10-10 | Siegfried Kramer | Multi-point lubrication distribution system |
| CN108916626A (en) * | 2017-12-25 | 2018-11-30 | 辽宁三三工业有限公司 | A kind of lubricating system and method |
| CN214198129U (en) * | 2021-01-07 | 2021-09-14 | 重庆安特瑞润滑设备有限公司 | Lubricating oil distributor device |
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