CN105909959A - Sliding bearing constant-pressure oil supply device based on programmable logic controller (PLC) - Google Patents
Sliding bearing constant-pressure oil supply device based on programmable logic controller (PLC) Download PDFInfo
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- CN105909959A CN105909959A CN201610405392.9A CN201610405392A CN105909959A CN 105909959 A CN105909959 A CN 105909959A CN 201610405392 A CN201610405392 A CN 201610405392A CN 105909959 A CN105909959 A CN 105909959A
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- Prior art keywords
- oil
- plc
- oil supply
- supply device
- device based
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Classifications
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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
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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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
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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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
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
-
- 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
- F16N2210/00—Applications
- F16N2210/14—Bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a sliding bearing constant-pressure oil supply device based on a programmable logic controller (PLC). The sliding bearing constant-pressure oil supply device based on the PLC comprises a hydraulic part and an electrical part. The hydraulic part comprises oil delivery devices and oil return devices, wherein the oil delivery devices are sequentially connected between an oil station and a lubricating bearing through an oil supply pipe, and the oil return devices are sequentially connected between the lubricating bearing and the oil station through oil return pipes. The electrical part comprises an oil supply motor used for driving the oil delivery devices, an oil return motor used for driving the oil return devices, the PLC, a touch screen, a frequency converter and a contactor, wherein the touch screen is in circuit connection with the PLC, and the PLC is in circuit connection with the oil supply motor through the frequency converter and is in circuit connection with the three-phase oil return asynchronous motor through the contactor. According to the sliding bearing constant-pressure oil supply device based on the PLC, the PLC is in communication with the frequency converter, so that the rotating speeds of the motors are controlled and a pump is driven; and the flow is regulated, so that the oil supply pressure is kept constant in real time, the effect that the oil station can supply oil to the bearing at the constant pressure under different working conditions is guaranteed, and the automation degree, safety and stability of constant-pressure oil supply are improved.
Description
Technical field
The present invention relates to bearing lubrication technical field and the automation field of electromechanical equipment, be related specifically to a kind of sliding bearing constant pressure oil supply device based on PLC.
Background technology
Sliding bearing is a kind of bearing relying on sliding friction to be operated, and makes bearing and axle surface separately be not directly contacted with by lubricating oil, to reduce friction and surface abrasion.Being full of oil film between axle and bearing, oil film has good absorbing performance, can take away the heat that sliding friction produces, and then can improve the fatigue life of bearing.The pressure of reasonable adjusting fuel feeding, can make to be formed between bearing and axle enough oil films, it is ensured that bearing has enough bearing capacitys.
At present, the oil lubrication mode of sliding bearing is divided into constant pressure fuel feeding and constant flow fuel feeding two kinds.Constant flow fuel feeding mainly adapts to the change of load by regulation flow, and constant pressure fuel feeding can be automatically adjusted oil pocket pressure to adapt to the change of load along with the change of oil film thickness.
Sliding bearing constant pressure oil supply device generally uses motor as power source, drives pump to carry out fuel feeding, and the choke valve on regulation pipeline keeps pressure constant, and this regulative mode efficiency is low and precision is low.
The present invention proposes a kind of sliding bearing constant pressure oil supply device based on PLC, utilize PLC to communicate with converter and then control motor speed and drive pump, regulation flow makes charge oil pressure keep constant in real time, it is ensured that bearing is under different operating modes, and petrol station can keep constant pressure oil supply.
Summary of the invention
The present invention, in order to improve efficiency and the precision of constant pressure oil supply, uses touch screen control PLC, utilizes PLC to change fuel supply flow rate with communicating of converter, makes pressure keep constant, and it is the most constant to carry out Real Time Observation charge oil pressure by the Pressure gauge in fuel feeding exit.
For achieving the above object, the technical scheme that the present invention takes is as follows:
A kind of sliding bearing constant pressure oil supply device based on PLC, including hydraulic part and electric part, described hydraulic part includes being sequentially connected with the fuel delivery device between petrol station and lubrication bearing by fuel feed pump, and it is sequentially connected with the oil return apparatus between lubrication bearing and petrol station by oil return pipe, described electric part includes the fuel feeding motor driving fuel delivery device, drive the oil return motor of oil return apparatus, PLC, touch screen, converter and catalyst, described touch screen is connected with PLC circuit, described PLC is connected with fuel feeding motor circuit by converter respectively, it is connected with oil return threephase asynchronous circuit by catalyst.
Further, described fuel delivery device includes supplying oil strainer, oil feed pump, check valve, choke valve by what fuel feed pump was sequentially connected between petrol station and lubrication bearing, and described oil return apparatus includes being sequentially connected to connect scavenge oil pump, the return filter lubricated between bearing and petrol station by oil return pipe.
Further, the exit of described fuel feed pump is provided with Pressure gauge, can monitor charge oil pressure, and then the parameter of regulation converter in real time, it is ensured that constant pressure oil supply.
Further, it is parallel with the fuel feed pump of more than two between described check valve and lubrication bearing, every fuel feed pump is provided with choke valve and Pressure gauge, facilitates many places fuel feeding.
Further, described oil feed pump and scavenge oil pump are gear pump, and output shaft with fuel feeding motor and oil return motor is directly connected to respectively, reduces mediation member, improves the reliability of system.
Further, described PLC and converter use RS485 bus to connect, and communication protocol is Modbus rtu protocol.
Further, equipped with the overflow valve for regulating oil feed pump outlet pressure on the fuel feed pump between described oil feed pump and check valve.
Further, described return line is also equipped with cooler, it is ensured that oil temperature will not be too high.
Further, described oil return motor and fuel feeding motor are threephase asynchronous.
Compared to existing technology, the method have the advantages that
One, utilize the soft key of touch screen to instead of traditional mechanical button, improve the safety and stability of whole device；
Two, utilize PLC control converter to control motor, improve the automaticity of device；
Three, utilize converter to regulate fuel supply flow rate, ball valve is installed at delivery side of pump, ball valve can also regulate flow, can realize second voltage regulation, better assures that pressure is constant；
Four, at oil returning tube, there is cooler, oil can be circulated cooling, prevent high oil temperature.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electric part of a kind of based on PLC sliding bearing constant pressure oil supply device of the embodiment of the present invention.
Fig. 2 is the schematic diagram of the hydraulic part of a kind of based on PLC sliding bearing constant pressure oil supply device of the embodiment of the present invention.
Fig. 3 is the threedimensional model schematic diagram of the embodiment of the present invention.
Fig. 4 is the threedimensional model close-up schematic view of the embodiment of the present invention.
Wherein, 1-touch screen；2-PLC；3-converter；4-fuel feeding motor；5-oil return motor；6-catalyst；7-switch board, 8-petrol station；9-is for oil strainer；10-oil feed pump；11-overflow valve；12-check valve；13-choke valve；14-Pressure gauge；15-sliding bearing workbench；16-scavenge oil pump；17-radiator；18-return filter.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in detail.
nullAs depicted in figs. 1 and 2，A kind of sliding bearing constant pressure oil supply device based on PLC，Including hydraulic part and electric part，Described hydraulic part includes being sequentially connected with the fuel delivery device between petrol station 8 and lubrication bearing by fuel feed pump、And it is sequentially connected with the oil return apparatus between lubrication bearing and petrol station 8 by oil return pipe，Described electric part includes the fuel feeding motor 4 driving fuel delivery device、Drive the oil return motor 5 of oil return apparatus、PLC2、Touch screen 1、Converter 3 and catalyst 6，Described touch screen 1 is connected with PLC2 circuit，Described PLC2 is connected with fuel feeding motor 4 circuit by converter 3 respectively、It is connected with oil return motor 5 circuit by catalyst 6，Wherein，PLC2、Touch screen 1、Converter 3 and catalyst 6 are arranged in switch board 7，Described PLC2 and converter 3 use RS485 bus to connect，Communication protocol is Modbus rtu protocol，Described oil return motor 5 and fuel feeding motor 4 are threephase asynchronous.Oil return motor 5, only need to be by rated power operation owing to need not speed governing, and PLC2 controls oil return motor 5 by control contactor 6.
Described fuel delivery device includes supplying oil strainer 9, oil feed pump 10, check valve 12, choke valve 13 by what fuel feed pump was sequentially connected between petrol station 8 and lubrication bearing, wherein, it is parallel with two fuel feed pumps between described check valve 12 and lubrication bearing, it is provided with choke valve 13 and Pressure gauge 14 on every fuel feed pump, facilitates many places fuel feeding.Pressure gauge (14), can monitor charge oil pressure, and then the parameter of regulation converter, it is ensured that constant pressure oil supply in real time.Described oil return apparatus includes being sequentially connected to connect the scavenge oil pump 16 between lubrication bearing and petrol station 8, cooler 17, return filter 18 by oil return pipe, and cooler 17 guarantees that the oil temperature returning to petrol station 8 will not be too high, it is to avoid impact each portion.
In one embodiment of the invention, described oil feed pump 10 and scavenge oil pump 16 are gear pump, and output shaft with fuel feeding motor 4 and oil return motor 5 is directly connected to respectively, reduces mediation member, improves the reliability of system.
In one embodiment of the invention, equipped with the overflow valve 11 for regulating oil feed pump 10 outlet pressure on the fuel feed pump between described oil feed pump 10 and check valve 12.
The method of operation of this device: arrange the frequency of the converter 3 controlling motor on touch screen 1, PLC2 is communicated with converter 3 by RS485 bus, and then changes the frequency of converter 3；After being provided with, touch screen 1 is pressed the button of electric motor starting, it is possible to start motor, drive pump to carry out fuel feeding and oil return；Observe the Pressure gauge 14 on fuel feed pump simultaneously, touch screen 1 changes the frequency of converter 3 in real time, and then changes fuel supply flow rate, it is ensured that pressure is constant；When needs fuel cut-off, as long as pressing motor stop button on touch screen 1.
Specifically, oil feed line aspect, fuel feeding motor 4 connects oil feed pump 10 by shaft coupling, by oil through extracting out from petrol station 8 for oil strainer 9, after overflow valve 11 pressure regulation, check valve 12 and choke valve 13, arrive sliding bearing workbench 15, Pressure gauge 14 can monitor charge oil pressure in real time.Petrol station 8, confession oil strainer 9, oil feed pump 10, overflow valve 11, check valve 12 pass sequentially through fuel feed pump with choke valve 13 and are connected, and constitute in-line.Return line aspect is then to be driven scavenge oil pump 16 by oil return motor 5, and by radiator 17, return filter 18, the oil of sliding bearing workbench 15 is back to petrol station 8 through scavenge oil pump 16.
The power supply mode of above-described embodiment uses three-phase four-wire system, and motor used is threephase asynchronous.
The charge oil pressure of above-described embodiment generally remains in about 0.2MPa, is usually no more than 0.4MPa.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (9)
1. a sliding bearing constant pressure oil supply device based on PLC, it is characterized in that: include hydraulic part and electric part, described hydraulic part includes being sequentially connected with the fuel delivery device between petrol station (8) and lubrication bearing by fuel feed pump, and it is sequentially connected with the oil return apparatus between lubrication bearing and petrol station (8) by oil return pipe, described electric part includes the fuel feeding motor (4) driving fuel delivery device, drive the oil return of oil return apparatus with motor (5), PLC (2), touch screen (1), converter (3) and catalyst (6), described touch screen (1) is connected with PLC (2) circuit, described PLC (2) is connected with fuel feeding motor (4) circuit by converter (3) respectively, it is connected with oil return threephase asynchronous (5) circuit by catalyst (6).
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 1, it is characterized in that: described fuel delivery device includes supplying oil strainer (9), oil feed pump, check valve (12), choke valve (13) by what fuel feed pump was sequentially connected between petrol station (8) and lubrication bearing, described oil return apparatus includes being sequentially connected to connect scavenge oil pump (16), the return filter (18) lubricated between bearing and petrol station (8) by oil return pipe.
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 2, it is characterised in that: the exit of described fuel feed pump is provided with Pressure gauge ((14)).
4. can monitor charge oil pressure, and then the parameter of regulation converter ((3)) in real time, it is ensured that constant pressure oil supply
Sliding bearing constant pressure oil supply device based on PLC according to claim 2, it is characterized in that: be parallel with the fuel feed pump of more than two between described check valve (12) and lubrication bearing, every fuel feed pump is provided with choke valve (13) and Pressure gauge (14).
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 2, it is characterized in that: described oil feed pump (10) and scavenge oil pump (16) are gear pump, and output shaft with fuel feeding motor (4) and oil return motor (5) is directly connected to respectively.
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 1, it is characterised in that: described PLC (2) and converter (3) use RS (485) bus to connect, and communication protocol is Modbus rtu protocol.
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 2, it is characterised in that: equipped with being used for regulating the overflow valve (11) of oil feed pump (10) outlet pressure on the fuel feed pump between described oil feed pump (10) and check valve (12).
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 2, it is characterised in that: it is also equipped with cooler (17) on described return line.
Sliding bearing constant pressure oil supply device based on PLC the most according to claim 2, it is characterised in that: described oil return motor (5) and fuel feeding motor (4) are threephase asynchronous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405392.9A CN105909959A (en) | 2016-06-08 | 2016-06-08 | Sliding bearing constant-pressure oil supply device based on programmable logic controller (PLC) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405392.9A CN105909959A (en) | 2016-06-08 | 2016-06-08 | Sliding bearing constant-pressure oil supply device based on programmable logic controller (PLC) |
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| CN105909959A true CN105909959A (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610405392.9A Pending CN105909959A (en) | 2016-06-08 | 2016-06-08 | Sliding bearing constant-pressure oil supply device based on programmable logic controller (PLC) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744621A (en) * | 2016-12-28 | 2017-05-31 | 雷天动力设备（苏州）有限公司 | A kind of constant pressure oil supply device based on converter technique |
| CN110805821A (en) * | 2019-10-22 | 2020-02-18 | 镇江市高等专科学校 | Grease injection machine for bearing, control system and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101012826A (en) * | 2007-02-13 | 2007-08-08 | 沪东重机股份有限公司 | Self-controlled pressure-sustaining oil transmission pump set |
| CN201003679Y (en) * | 2006-12-28 | 2008-01-09 | 冯进才 | Distributed type automatic lubricating device |
| CN201818309U (en) * | 2010-10-27 | 2011-05-04 | 石家庄煤矿机械有限责任公司 | Double-circulation lubricating and cooling device of cutting speed reducer of roadheader for coal mines |
| CN103672346A (en) * | 2013-12-21 | 2014-03-26 | 湖南崇德工业科技有限公司 | Sliding bearing intelligent oil supply system and method |
-
2016
- 2016-06-08 CN CN201610405392.9A patent/CN105909959A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201003679Y (en) * | 2006-12-28 | 2008-01-09 | 冯进才 | Distributed type automatic lubricating device |
| CN101012826A (en) * | 2007-02-13 | 2007-08-08 | 沪东重机股份有限公司 | Self-controlled pressure-sustaining oil transmission pump set |
| CN201818309U (en) * | 2010-10-27 | 2011-05-04 | 石家庄煤矿机械有限责任公司 | Double-circulation lubricating and cooling device of cutting speed reducer of roadheader for coal mines |
| CN103672346A (en) * | 2013-12-21 | 2014-03-26 | 湖南崇德工业科技有限公司 | Sliding bearing intelligent oil supply system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744621A (en) * | 2016-12-28 | 2017-05-31 | 雷天动力设备（苏州）有限公司 | A kind of constant pressure oil supply device based on converter technique |
| CN110805821A (en) * | 2019-10-22 | 2020-02-18 | 镇江市高等专科学校 | Grease injection machine for bearing, control system and control method |
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Application publication date: 20160831 |