CN206419659U - A kind of sliding bearing constant pressure oil supply device based on PLC - Google Patents
A kind of sliding bearing constant pressure oil supply device based on PLC Download PDFInfo
- Publication number
- CN206419659U CN206419659U CN201620552579.7U CN201620552579U CN206419659U CN 206419659 U CN206419659 U CN 206419659U CN 201620552579 U CN201620552579 U CN 201620552579U CN 206419659 U CN206419659 U CN 206419659U
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- plc
- oil
- constant pressure
- motor
- oil return
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a kind of sliding bearing constant pressure oil supply device based on PLC, including hydraulic part and electric part, described hydraulic part includes the fuel delivery device being sequentially connected by fuel feed pump between petrol station and lubrication bearing, and the oil return apparatus between lubrication bearing and petrol station is sequentially connected by oil return pipe, described electric part includes the fuel feeding motor of driving fuel delivery device, drive the oil return motor of oil return apparatus, PLC, touch-screen, frequency converter and contactor, described touch-screen is connected with PLC circuit, described PLC is connected by frequency converter with fuel feeding with motor circuit respectively, it is connected by contactor with oil return with threephase asynchronous circuit.The utility model using PLC and frequency converter communication and then controlled motor rotating speed and can drive pump, regulation flow makes charge oil pressure keep constant in real time, bearing is ensured under different operating modes, petrol station can keep constant pressure oil supply, improve automaticity, the safety and stability of constant pressure oil supply.
Description
Technical field
The utility model is related to the bearing lubrication technical field and automation field of electromechanical equipment, is related specifically to one
Plant the sliding bearing constant pressure oil supply device based on PLC.
Background technology
Sliding bearing is the bearing that a kind of dependence sliding friction is operated, and bearing and axle surface are separated by lubricating oil
It is not directly contacted with, to reduce friction and surface abrasion.Oil film is full of between axle and bearing, oil film has good vibration absorbing performance,
The heat of sliding friction generation can be taken away, and then the fatigue life of bearing can be improved.The pressure of reasonable adjusting fuel feeding, can make
Enough oil films are formed between bearing and axle, it is ensured that bearing there are enough bearing capacitys.
At present, the oil lubrication mode of sliding bearing is divided into two kinds of constant pressure fuel feeding and constant flow fuel feeding.Constant flow fuel feeding master
The change of load is adapted to by adjusting flow, constant pressure fuel feeding can automatically adjust oil pocket pressure with the change of oil film thickness
Power adapts to the change of load.
Sliding bearing constant pressure oil supply device, as power source, drives pump to carry out on fuel feeding, regulation pipeline generally using motor
Choke valve keep pressure constant, this regulative mode efficiency is low and precision is low.
The utility model proposes a kind of sliding bearing constant pressure oil supply device based on PLC, communicated using PLC and frequency converter
And then controlled motor rotating speed and drive pump, regulation flow makes charge oil pressure keep constant in real time, it is ensured that bearing under different operating modes,
Petrol station can keep constant pressure oil supply.
Utility model content
The utility model, using touch-screen control PLC, utilizes PLC and change to improve the efficiency and precision of constant pressure oil supply
The communication of frequency device changes fuel supply flow rate, pressure is kept constant, and is supplied by the pressure gauge in fuel feeding exit come Real Time Observation
Whether oil pressure is constant.
To achieve the above object, the technical scheme that the utility model is taken is as follows：
A kind of sliding bearing constant pressure oil supply device based on PLC, including hydraulic part and electric part, described hydraulic section
Divide the fuel delivery device including being sequentially connected by fuel feed pump between petrol station and lubrication bearing and profit is sequentially connected by oil return pipe
Oil return apparatus between plain besring and petrol station, described electric part includes the fuel feeding motor of driving fuel delivery device, driving
Oil return motor, PLC, touch-screen, frequency converter and the contactor of oil return apparatus, described touch-screen are connected with PLC circuit, institute
The PLC stated is connected by frequency converter with fuel feeding with motor circuit, by contactor and oil return threephase asynchronous respectively
Circuit is connected.
Further, described fuel delivery device includes the confession being sequentially connected to by fuel feed pump between petrol station and lubrication bearing
Oil strainer, oil feed pump, check valve, choke valve, described oil return apparatus include being sequentially connected to lubricate bearing by oil return pipe
Scavenge oil pump, return filter between petrol station.
Further, the exit of the fuel feed pump is provided with pressure gauge, charge oil pressure can be monitored in real time, and then adjust change
The parameter of frequency device, it is ensured that constant pressure oil supply.
Further, the fuel feed pump of more than two, every fuel feed pump are parallel between described check valve and lubrication bearing
On be provided with choke valve and pressure gauge, facilitate many places fuel feeding.
Further, described oil feed pump and scavenge oil pump are gear pump, and are used respectively with fuel feeding motor and oil return
The output shaft of motor is directly connected to, and reduces mediation member, improves the reliability of system.
Further, the PLC and frequency converter are connected using RS485 buses, and communication protocol is Modbus rtu protocols.
Further, being equipped with the fuel feed pump between described oil feed pump and check valve is used to adjust fuel feeding pump discharge pressure
Overflow valve.
Further, it is also equipped with radiator on the return line, it is ensured that oil temperature will not be too high.
Further, described oil return is threephase asynchronous with motor with motor and fuel feeding.
The improvement of the present utility model not included to method, program.
Compared with prior art, the utility model has following advantage：
One, traditional mechanical button is instead of using the soft key of touch-screen, the security of whole device is improved and steady
It is qualitative；
Two, control frequency converter with controlled motor using PLC, improve the automaticity of device；
Three, fuel supply flow rate is adjusted using frequency converter, ball valve is installed in the exit of pump, ball valve can also adjust flow,
Second voltage regulation can be achieved, better assures that pressure is constant；
Four, there is radiator at oil returning tube, circulating cooling can be carried out to oil, prevent high oil temperature.
Brief description of the drawings
Fig. 1 is a kind of electric part of sliding bearing constant pressure oil supply device based on PLC of the utility model embodiment
Schematic diagram.
Fig. 2 is a kind of hydraulic part of sliding bearing constant pressure oil supply device based on PLC of the utility model embodiment
Schematic diagram.
Wherein, 1- touch-screens；2-PLC；3- frequency converters；4- fuel feeding motor；5- oil return motor；6- contactors；
7- switch boards, 8- petrol stations；9- supply filters；10- oil feed pumps；11- overflow valves；12- check valves；13- choke valves；14- pressure
Table；15- sliding bearing workbench；16- scavenge oil pumps；17- radiators；18- return filters.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in detail specific embodiment.
As depicted in figs. 1 and 2, a kind of sliding bearing constant pressure oil supply device based on PLC, including hydraulic part and electrical part
Point, described hydraulic part includes being sequentially connected the fuel delivery device between petrol station 8 and lubrication bearing by fuel feed pump and passed through
Oil return pipe is sequentially connected the oil return apparatus between lubrication bearing and petrol station 8, and described electric part includes driving fuel delivery device
Fuel feeding motor 4, oil return motor 5, PLC2, touch-screen 1, frequency converter 3 and the contactor 6 for driving oil return apparatus, it is described
Touch-screen 1 be connected with PLC2 circuits, described PLC2 is connected with the circuit of motor 4 with fuel feeding by frequency converter 3, passed through respectively
Contactor 6 is connected with oil return with the circuit of motor 5, wherein, PLC2, touch-screen 1, frequency converter 3 and contactor 6 are arranged on switch board
In 7, the PLC2 and frequency converter 3 are using the connection of RS485 buses, and communication protocol is Modbus rtu protocols, and described oil return is used
Motor 5 and fuel feeding motor 4 are threephase asynchronous.Oil return motor 5, only need to be by volume due to not needing speed governing
Determine Power operation, PLC2 controls oil return motor 5 by control contactor 6.
Described fuel delivery device includes the supply filter being sequentially connected to by fuel feed pump between petrol station 8 and lubrication bearing
9th, oil feed pump 10, check valve 12, choke valve 13, wherein, it is parallel with two fuel feeding between described check valve 12 and lubrication bearing
Choke valve 13 and pressure gauge 14 are provided with pipe, every fuel feed pump, facilitates many places fuel feeding.Pressure gauge 14 can monitor fuel feeding in real time
Pressure, and then adjust the parameter of frequency converter, it is ensured that constant pressure oil supply.Described oil return apparatus includes being sequentially connected to by oil return pipe
Scavenge oil pump 16, radiator 17, the return filter 18 between bearing and petrol station 8 are lubricated, radiator 17 ensures to return to the oil of petrol station 8
Temperature will not be too high, it is to avoid each portion is impacted.
In one embodiment of the present utility model, described oil feed pump 10 and scavenge oil pump 16 is gear pump, and respectively
It is directly connected to fuel feeding with motor 4 and oil return with the output shaft of motor 5, reduces mediation member, improves the reliable of system
Property.
In one embodiment of the present utility model, it is equipped with the fuel feed pump between described oil feed pump 10 and check valve 12
Overflow valve 11 for adjusting the outlet pressure of oil feed pump 10.
The method of operation of the device：The frequency of the frequency converter 3 of controlled motor is set on touch-screen 1, and PLC2 passes through RS485
Bus and frequency converter 3 communicate, and then change the frequency of frequency converter 3；After being provided with, electric motor starting is pressed on touch-screen 1
Button, it is possible to start motor, drives pump to carry out fuel feeding and oil return；The pressure gauge 14 on fuel feed pump is observed simultaneously, in touch-screen 1
The upper frequency for changing frequency converter 3 in real time, and then change fuel supply flow rate, it is ensured that pressure is constant；When needing fuel cut-off, as long as
Motor stop button is pressed on touch-screen 1.
Specifically, in terms of oil feed line, fuel feeding connects oil feed pump 10 with motor 4 by shaft coupling, by oil through fuel feeding
Filter 9 is extracted out from petrol station 8, and sliding bearing workbench 15 is reached after the pressure regulation of overflow valve 11, check valve 12 and choke valve 13,
Charge oil pressure can be monitored on pressure gauge 14 in real time.Petrol station 8, supply filter 9, oil feed pump 10, overflow valve 11, check valve 12 and section
Stream valve 13 passes sequentially through fuel feed pump and is connected, and constitutes in-line.In terms of return line driven back by oil return motor 5
Oil pump 16, petrol station is back to by the oil of sliding bearing workbench 15 by scavenge oil pump 16 by radiator 17, return filter 18
8。
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 0.2MPa or so, is usually no more than 0.4MPa.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of sliding bearing constant pressure oil supply device based on PLC, it is characterised in that：Including hydraulic part and electric part, institute
The hydraulic part stated include by fuel feed pump be sequentially connected petrol station (8) and lubrication bearing between fuel delivery device and by time
Oil pipe is sequentially connected the oil return apparatus between lubrication bearing and petrol station (8), and described electric part includes driving fuel delivery device
Fuel feeding motor (4), drive the oil return motor (5) of oil return apparatus, PLC (2), touch-screen (1), frequency converter (3) and connect
Tentaculum (6), described touch-screen (1) is connected with PLC (2) circuit, and described PLC (2) is used by frequency converter (3) and fuel feeding respectively
Motor (4) circuit is connected, is connected by contactor (6) with oil return with threephase asynchronous (5) circuit.
2. the sliding bearing constant pressure oil supply device according to claim 1 based on PLC, it is characterised in that：Described oil transportation
Device include by fuel feed pump be sequentially connected to petrol station (8) and lubrication bearing between supply filter (9), oil feed pump, unidirectionally
Valve (12), choke valve (13), described oil return apparatus include being sequentially connected between lubrication bearing and petrol station (8) by oil return pipe
Scavenge oil pump (16), return filter (18).
3. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：The fuel feed pump
Exit pressure gauge (14) is installed.
4. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：Described is unidirectional
It is parallel between valve (12) and lubrication bearing on the fuel feed pump of more than two, every fuel feed pump and is provided with choke valve (13) and pressure
Power table (14).
5. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：Described fuel feeding
Pump (10) and scavenge oil pump (16) are gear pump, and respectively with fuel feeding motor (4) and the output shaft of oil return motor (5)
It is directly connected to.
6. the sliding bearing constant pressure oil supply device according to claim 1 based on PLC, it is characterised in that：The PLC (2)
Connected with frequency converter (3) using RS (485) bus, communication protocol is Modbus rtu protocols.
7. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：Described fuel feeding
The overflow valve (11) for being used for adjusting oil feed pump (10) outlet pressure is housed on the fuel feed pump between pump (10) and check valve (12).
8. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：The oil return pipe
Radiator (17) is also equipped with road.
9. the sliding bearing constant pressure oil supply device according to claim 2 based on PLC, it is characterised in that：Described oil return
With motor (4) it is threephase asynchronous with motor (5) and fuel feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552579.7U CN206419659U (en) | 2016-06-08 | 2016-06-08 | A kind of sliding bearing constant pressure oil supply device based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552579.7U CN206419659U (en) | 2016-06-08 | 2016-06-08 | A kind of sliding bearing constant pressure oil supply device based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419659U true CN206419659U (en) | 2017-08-18 |
Family
ID=59577240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620552579.7U Expired - Fee Related CN206419659U (en) | 2016-06-08 | 2016-06-08 | A kind of sliding bearing constant pressure oil supply device based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206419659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751499A (en) * | 2018-12-10 | 2019-05-14 | 夹江县巨浪机械有限责任公司 | A kind of solution that surface grinding machine workbench lubrication oil supply is unstable |
| CN110486609A (en) * | 2019-07-31 | 2019-11-22 | 中国舰船研究设计中心 | A kind of shafting oil pump motor frequency conversion automatic control device and control method |
-
2016
- 2016-06-08 CN CN201620552579.7U patent/CN206419659U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751499A (en) * | 2018-12-10 | 2019-05-14 | 夹江县巨浪机械有限责任公司 | A kind of solution that surface grinding machine workbench lubrication oil supply is unstable |
| CN110486609A (en) * | 2019-07-31 | 2019-11-22 | 中国舰船研究设计中心 | A kind of shafting oil pump motor frequency conversion automatic control device and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20190608 |