CN105909577A - Quick tensioning hydraulic station - Google Patents
Quick tensioning hydraulic station Download PDFInfo
- Publication number
- CN105909577A CN105909577A CN201610380222.XA CN201610380222A CN105909577A CN 105909577 A CN105909577 A CN 105909577A CN 201610380222 A CN201610380222 A CN 201610380222A CN 105909577 A CN105909577 A CN 105909577A
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- oil
- loop
- motor
- tensioning
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a quick tensioning hydraulic station which comprises a programmable logic controller PLC, a tensioning oil cylinder, a hydraulic system and a tension sensor used for detecting a tension signal of a conveyor belt machine, wherein the tension sensor is in communication connection with the programmable logic controller PLC; the hydraulic system is composed of an oil tank, a quick feeding loop, a slow feeding loop and an electromagnetic directional valve arranged at an oil inlet of the tensioning oil cylinder; the quick feeding loop and the slow feeding loop are both connected with the oil tank; the ends of the quick feeding loop and the slow feeding loop are both connected with the inlet end of the electromagnetic directional valve; a first oil pump and a first motor are arranged on the quick feeding loop; a second oil pump and a second motor are arranged on the slow feeding loop; the working pressures and the oil quantities of the first oil pump and the second oil pump are all different; and the first motor and the second motor are both connected with the programmable logic controller PLC. According to the quick tensioning hydraulic station, the hydraulic system can supply at least three different feeding speeds to meet the requirements of the conveyor belt machine for different tensioning speeds.
Description
Technical field
The invention belongs to ribbon conveyer technical field, particularly relate to a kind of quickly tensioning Hydraulic Station.
Background technology
The confidential normal operation of belt conveying, conveyer belt must have certain tensile force.Conveyer belt has certain tensile force
Just can make to produce enough frictional force between conveyer belt and driving cylinder, it is ensured that driving drum driving conveying belt runs well.?
Tight device is exactly to run well for ribbon conveyer to provide the auxiliary device of tensile force, in belt conveyance system can not or
Lack.Specifically, the Main Function of tensioner is: (1) ensures that conveyer belt is driving roller separation point to have enough tension force, really
Protect frictional drive condition；(2) the conveyer belt minimum sag condition in minimum tension region is ensured；(3) conveyer belt is compensated long-time
Run the permanent elongation produced, make conveyer belt remain certain tension force；(4) sometimes may also operate as storing up band effect.At band
During formula conveyer manufactures and designs, it is necessary to rationally select tensioner, accomplish both to can guarantee that conveyer safe handling, economical real again
Favour.
Belt conveyor tensioning device mainly has at present: spiral tensioning, the manually tensioning of strand mill, heavy-hammer-tightening, tensioning car are opened
Tightly, hydraulic tensioning etc. are several.Automatic hydraulic tensioning device is because possessing the start-up course and running that can set conveyer belt
Tension force, makes conveyer belt run in the range of a reasonable tension all the time, thus improves the tension force utilization rate of conveyer belt, reduce conveying
Between band and cylinder, sliding friction damages and becomes current large belt with the rubber driving cylinder than the advantage of pressure and carries
A kind of tensioning mode that machine conveyer belt is commonly used, it is the form using tensioning dolly+hydraulic jack+pumping plant, passes through tensioning
Conveyer belt is tightened up by dolly, is automatically adjusted conveyer belt tightness in running by hydraulic jack.Existing automatically
The control pressurer system of the hydraulic jack of Hydranlic tensioner uses the combining form of dosing pump+electro-hydraulic proportional valve, its pressure
Power degree of regulation is low, and there is dead band, and oil pump is according to maximum flow work, and system heat generation amount is big, and energy consumption is big, and fixed because using
Amount pump, tensioning constant airspeed is constant, it is impossible to fully meet the demand of actual condition.
As can be seen here, prior art awaits further improving.
Summary of the invention
The present invention is the weak point avoiding above-mentioned prior art to exist, it is provided that a kind of quickly tensioning Hydraulic Station, this liquid
Pressure station can provide three kinds of different feed speeds, the tensioning rate request different to meet conveying belt machine.
The technical solution adopted in the present invention is:
A kind of quickly tensioning Hydraulic Station, including programmable controller PLC, tensioning hydro-cylinder, for for tensioning hydro-cylinder fuel feeding
Hydraulic system and for detecting the tension pick-up of conveying belt machine tension signal, tension pick-up leads to programmable controller PLC
Letter connects, and hydraulic system includes fuel tank, fast feed loop, slow feeding loop and is arranged at tensioning hydro-cylinder oil-in
Solenoid directional control valve, the ease up top in jog loop, the top in fast feed loop is all connected with fuel tank, fast feed loop
The ease up end in jog loop of end is all connected with the entrance point of solenoid directional control valve, and fast feed loop is provided with the first oil
Pump and the first motor of driving the first oil pump, slow feeding loop is provided with the second oil pump and drives the second electricity of the second oil pump
Machine, the first oil pump and the operating pressure of the second oil pump and oil mass all differ, and the first motor and the second motor are all compiled with above-mentioned
Range controller PLC is connected.
The operating pressure of described first oil pump is less than the operating pressure of the second oil pump, and the oil mass of the first oil pump is more than the second oil
The oil mass of pump, the first motor and the second motor are threephase asynchronous.
Easing up and be provided with fuel-quantity transducer on jog loop in described fast feed loop, each fuel-quantity transducer is all with upper
State programmable controller PLC communication connection.
Described hydraulic system also includes that outlet pressure testing agency, outlet pressure testing agency include being arranged on electromagnetic switch
The pressure transducer of valve entrance point and the choke valve being connected with the port of export of electromagnetic valve reversal valve, returning between choke valve and fuel tank
The 3rd overflow valve it is provided with on oil pipe line.
The multiple spot position travel switch for detecting the oil cylinder piston throw of lever, multiple spot position it is provided with on described tensioning hydro-cylinder
Travel switch communicates to connect with above-mentioned programmable controller PLC.
Described hydraulic system also includes manual-operated emergent loop, manual-operated emergent loop being disposed with manually along fuel feeding direction
Pressuring pump and hand-operated direction valve.
Described hydraulic system has four kinds of mode of operations: the first motor is opened, and fast feed loop is tensioning hydro-cylinder fuel feeding, the
Two motors cut out, and slow feeding loop is not tensioning hydro-cylinder fuel feeding；First motor cuts out, and fast feed loop is not tensioning hydro-cylinder
Fuel feeding, the second motor unlatching, slow feeding loop is tensioning hydro-cylinder fuel feeding；First motor and the second motor are opened, quickly simultaneously
Jog loop is eased up simultaneously for tensioning hydro-cylinder fuel feeding in feeding loop；First motor and the second motor are turned off, and fast feed is returned
Jog loop of easing up, road is the most for tensioning hydro-cylinder fuel feeding, and manual-operated emergent loop is opened as tensioning hydro-cylinder fuel feeding.
Described fuel tank includes rod chamber and rodless cavity, above-mentioned fast feed loop, slow feeding loop, manual-operated emergent loop
All it is connected with rod chamber；Along fuel feeding on oil feed line between oil-out and the entrance point of solenoid directional control valve of described first oil pump
Direction is disposed with connected the first check valve, the first fine filter and the first angle one-way valve, wherein, the first fine filter
And it is provided with the first overflow valve between oil feed line and the oil-out of fuel tank between the first angle one-way valve；Described second oil pump
Oil-out and the entrance point of solenoid directional control valve between oil feed line on be disposed with second be connected along fuel feeding direction single
To valve, the second fine filter and the second angle one-way valve, the oil feed line between the second fine filter and the second angle one-way valve
And between the oil-out of fuel tank, it is provided with the second overflow valve；Between the oil-in end of the second angle one-way valve and solenoid directional control valve
Relief valve it is provided with between oil feed line and the oil-out of fuel tank.
Described hydraulic system also include shock-proof pressure gauge and Accumulator arrangements, shock-proof pressure gauge and Accumulator arrangements all with above-mentioned soon
Speed feeding loop, slow feeding loop, manual-operated emergent loop are connected, and Accumulator arrangements includes two accumulators, one of them accumulation of energy
Device and above-mentioned first check valve, the first angle one-way valve cooperatively form the first holding hydraulic pressure system, and another one accumulator is with upper
State the second check valve, the second angle one-way valve cooperatively forms the second holding hydraulic pressure system.
Oil-suction oil filter, described fuel tank it is provided with between described first oil pump and fuel tank, between the second oil pump and fuel tank
On be provided with temperature liquid level meter and air filter.
Owing to have employed technique scheme, having the beneficial effect that acquired by the present invention
1, traditional oil cylinder working-pressure control system all uses dosing pump and electro-hydraulic proportional valve, and pressure degree of regulation is low, and deposits
In dead band, oil pump works by maximum stream flow, and the caloric value of system is big.And the present invention returns for the fast feed of tensioning hydro-cylinder fuel feeding
Jog loop of easing up, road can be respectively tensioning hydro-cylinder fuel feeding, it is possible to be tensioning hydro-cylinder fuel feeding simultaneously, both work respectively with
Time work in the case of, available three kinds of different oil masses, three kinds of tensioning speed are provided indirectly, energy consumption is little, and energy-saving effect shows
Write, and meet the demand of conveying belt machine difference tensioning degree.
2, the antifouling property of the quick tensioning Hydraulic Station in the present invention to be far above existing ratio voltage regulating mode, to oil
The pollution of liquid is insensitive.
3, the tension signal of the detection of the tension pick-up in present invention conveying belt machine, and this tension signal is implemented transmission extremely
Programmable controller PLC, after programmable controller PLC computational analysis, sends control instruction to the first motor and the second motor,
And then control the first oil pump and the operating of the second oil pump, in operation process, fuel-quantity transducer detect in real time in oil feed line
Flow, and the pressure of oil feed line outlet is detected in real time by pressure transducer, and by the flow signal detected and pressure signal
Real-time Transmission is to programmable controller PLC, by programmable controller PLC control realization flow rate of hydraulic system and the real-time tune of pressure
Joint, automaticity is high.
4, the hydraulic system of the present invention is provided with manual-operated emergent loop, meets the demand of manual fuel feeding, and in system
In the case of power-off or motor are damaged, oil cylinder can be carried out fluid supply, it is ensured that the stability that system is run is with reliable
Property；Holding hydraulic pressure system makes the first motor and the second motor be service intermittent, reduces energy expenditure.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of the present invention.
Fig. 2 is the hydraulic schematic diagram of the present invention.
Fig. 3 is the relative position relation schematic diagram of conveying belt machine, tensioning dolly and tensioning hydro-cylinder.
Wherein,
1, second oil-suction oil filter the 2, second motor the 3, second oil pump the 4, second check valve the 5, second fine filter 6,
Second angle one-way valve the 7, second overflow valve the 8, first oil-suction oil filter the 9, first motor the 10, first oil pump 11, first is single
To valve the 12, first fine filter the 13, first fuel-quantity transducer the 14, first angle one-way valve the 15, first overflow valve 16, peace
Full valve 17, manual pressuring pump 18, hand-operated direction valve 19, shock-proof pressure gauge 20, Accumulator arrangements 21, pressure transducer 22,
Solenoid directional control valve 23, choke valve the 24, the 3rd overflow valve 25, tension pick-up 26, tensioning hydro-cylinder 26.1, rod chamber
26.2, rodless cavity 27, air filter 28, temperature liquid level meter 29, tensioning dolly 30, idler roller 31, conveyer belt 32, lead
Rail 33, multiple spot position travel switch
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not limited to
These embodiments.
As depicted in figs. 1 and 2, a kind of quickly tensioning Hydraulic Station, including programmable controller PLC, tensioning hydro-cylinder 26, for
For the hydraulic system of tensioning hydro-cylinder 26 fuel feeding and for detecting the tension pick-up 25 of conveying belt machine tension signal, tension pick-up
25 communicate to connect with programmable controller PLC, and hydraulic system includes fuel tank, fast feed loop, slow feeding loop and sets
Putting the solenoid directional control valve 22 at tensioning hydro-cylinder 26 oil-in, the ease up top in jog loop, the top in fast feed loop is equal
Be connected with fuel tank, the end in fast feed loop ease up jog loop end all with the entrance point phase of solenoid directional control valve 22
Even, fast feed loop is provided with the first oil pump 10 and drives the first motor 9 of the first oil pump 10, slow feeding loop sets
Being equipped with the second oil pump 3 and drive the second motor 2 of the second oil pump 3, the first motor 9 and the second motor 2 are three-phase asynchronous electric
Machine, the first oil pump 10 is low pressure and mass flow oil pump, and the second oil pump 3 is high-pressure low-flow oil pump；Set on described fast feed loop
It is equipped with the first fuel-quantity transducer 13, slow feeding loop is provided with the second fuel-quantity transducer, first, second fuel-quantity transducer
All communicate to connect with above-mentioned programmable controller PLC；It is provided with the first oil-suction oil filter between described first oil pump 10 and fuel tank
8, it is provided with the second oil-suction oil filter 1 between the second oil pump 3 and fuel tank, described fuel tank is provided with temperature liquid level meter 28 and air
Filter 27；Described hydraulic system also includes manual-operated emergent loop, manual-operated emergent loop being disposed with hands along fuel feeding direction
Dynamic pressuring pump 17 and hand-operated direction valve 18；Described hydraulic system also includes shock-proof pressure gauge 19 and Accumulator arrangements 20, shatter-proof pressure
Table 19 is all connected with above-mentioned fast feed loop, slow feeding loop, manual-operated emergent loop with Accumulator arrangements 20.
Specifically, described fuel tank includes rod chamber 26.1 and rodless cavity 26.2, above-mentioned fast feed loop, slow feeding
Loop, manual-operated emergent loop are all connected with rod chamber 26.1；Described first oil-out of oil pump 10 and entering of solenoid directional control valve 22
It is disposed with first connected check valve the 11, first fine filter 12 and the along fuel feeding direction on oil feed line between mouthful end
One angle one-way valve 14, wherein, going out of oil feed line between the first fine filter 12 and the first angle one-way valve 14 and fuel tank
The first overflow valve 15 it is provided with between hydraulic fluid port；Between oil-out and the entrance point of solenoid directional control valve 22 of described second oil pump 3
It is disposed with the second connected check valve the 4, second fine filter 5 and the second angle one-way valve along fuel feeding direction on oil feed line
6, it is provided with second between oil feed line and the oil-out of fuel tank between the second fine filter 5 and the second angle one-way valve 6 and overflows
Stream valve 7；Between oil feed line and the oil-out of fuel tank between second angle one-way valve 6 and the oil-in end of solenoid directional control valve 22
It is provided with relief valve 16.Described Accumulator arrangements 20 includes two accumulators, one of them accumulator and above-mentioned first check valve 11,
First angle one-way valve 14 cooperatively forms the first holding hydraulic pressure system, another one accumulator and above-mentioned second check valve 4, second
Angle one-way valve 6 cooperatively forms the second holding hydraulic pressure system, the first pressure-retaining system and the second pressure-retaining system and utilizes respective double single
To the locked hydraulic circuit of valve, with Accumulator arrangements 20 with the use of, it is ensured that system pressure does not declines.
Described hydraulic system also includes that outlet pressure testing agency, outlet pressure testing agency include being arranged on electromagnetic switch
The pressure transducer 21 of valve 22 entrance point and the choke valve 23 being connected with the port of export of electromagnetic valve reversal valve 22, choke valve 23 and oil
The 3rd overflow valve 24 it is provided with on oil feed line between case.
The multiple spot position travel switch 33 for detecting the oil cylinder piston throw of lever, multiple spot it is provided with on described tensioning hydro-cylinder 26
Position travel switch 33 communicates to connect with above-mentioned programmable controller PLC, and the stroke of the tensioning hydro-cylinder 26 arrived by Real-time Collection
Signal transmits in time to programmable controller PLC, in order to programmable controller PLC combines tension signal and stroke signal to first
Control made by motor 9 and the second motor 2.
Described hydraulic system has four kinds of mode of operations: the first motor 9 is opened, and fast feed loop is that tensioning hydro-cylinder 26 supplies
Oil, the second motor 2 cuts out, and slow feeding loop is not tensioning hydro-cylinder 26 fuel feeding；First motor 9 cuts out, and fast feed loop is not
For tensioning hydro-cylinder 26 fuel feeding, the second motor 2 is opened, and slow feeding loop is tensioning hydro-cylinder 26 fuel feeding；First motor 9 and the second electricity
Machine 2 is opened simultaneously, and jog loop is eased up simultaneously for tensioning hydro-cylinder 26 fuel feeding in fast feed loop；It is to say, programmable control
After the tension signal that tension signal sensor 25 transmission can be come by device PLC processed carries out computational analysis, to the first motor 9 and second
Motor 2 sends control instruction, controls the first motor 9 and the second motor 2 works respectively or works simultaneously, so that hydraulic system is for opening
Locking oil cylinder 26 provides three kinds of different flows, thus indirectly provides three kinds of tensioning speed；As the 4th kind of mode of operation, it is first
Motor 9 and the second motor 2 are turned off, and, the most for tensioning hydro-cylinder 26 fuel feeding, manually should in jog loop of easing up, fast feed loop
Anxious loop is opened as tensioning hydro-cylinder 26 fuel feeding.Under different mode of operations, hydraulic system be supplied to tensioning hydro-cylinder 26 oil mass and
The speed of supply oil mass all differs, thus provides four kinds of different tensioning speed for conveyer belt 31, can meet conveyer belt
31 different tensioning demands.
During hydraulic work system in the present invention, it is preferred that first pass through unlatching the first motor 9 and drive low pressure and mass flow pump work
Making, it is achieved the fast feed to tensioning hydro-cylinder 26, after being triggered to the multiple spot position travel switch of tensioning hydro-cylinder 26, the first motor breaks
Electricity, the second motor 2 is opened, and drives high-pressure low-flow pump work, slow hydraulic tensioning cylinder, obtains stable system pressure, it is to avoid
Conveyer belt 31 build-up of pressure is impacted, extends the service life of conveyer belt 31.
It should be noted that only rod chamber 26.1 fuel feeding to tensioning hydro-cylinder 26 during the hydraulic work system of the present invention,
The when of need not tensioning, the tension force of self of belt is relied on to make tensioning hydro-cylinder 26 reset and set at the oil return of tensioning hydro-cylinder 26
Put choke valve 23 and the 3rd overflow valve 24 of pressure adjustable, its objective is that making rod chamber 26.1 retain has a certain amount of hydraulic oil,
Time-consuming for quick tensioning next time.
As it is shown on figure 3, the piston rod of above-mentioned tensioning hydro-cylinder 26 is connected with tensioning dolly 29 by steel wire rope, tensioning dolly 29
Drive jockey pulley 30 to move along guide rail 32, thus realize the tension adjustment to the conveyer belt 31 being nested with on jockey pulley 30.
The part do not addressed in the present invention uses or uses for reference prior art and can realize.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or imply relatively important
Property.
Specific embodiment described herein is only the spiritual example explanation to the present invention.Belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar by those skilled in the art
Mode substitutes, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a quick tensioning Hydraulic Station, it is characterised in that include programmable controller PLC, tensioning hydro-cylinder, for for tensioning oil
The hydraulic system of oil supply cylinder and for detecting the tension pick-up of conveying belt machine tension signal, tension pick-up and PLC technology
Device plc communication connects, and hydraulic system includes fuel tank, fast feed loop, slow feeding loop and is arranged on tensioning hydro-cylinder and enters
The solenoid directional control valve of oil port, the ease up top in jog loop, the top in fast feed loop is all connected with fuel tank, quickly enters
All it is connected with the entrance point of solenoid directional control valve to the ease up end in jog loop of the end in loop, fast feed loop is arranged
There is the first oil pump and drive the first motor of the first oil pump, slow feeding loop be provided with the second oil pump and drive the second oil pump
The second motor, the first oil pump and the operating pressure of the second oil pump and oil mass all differ, the first motor and the second motor all with
Above-mentioned programmable controller PLC is connected.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that the operating pressure of described first oil pump is less than
The operating pressure of the second oil pump, the oil mass of the first oil pump is more than the oil mass of the second oil pump, and the first motor and the second motor are three
Phase asynchronous motor.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that ease up jog in described fast feed loop
Being provided with fuel-quantity transducer on loop, each fuel-quantity transducer all communicates to connect with above-mentioned programmable controller PLC.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that described hydraulic system also includes outlet pressure
Testing agency, outlet pressure testing agency includes the pressure transducer being arranged on solenoid directional control valve entrance point and commutates with electromagnetic valve
The choke valve that the port of export of valve is connected, the return line between choke valve and fuel tank is provided with the 3rd overflow valve.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that be provided with for examining on described tensioning hydro-cylinder
Survey the multiple spot position travel switch of the oil cylinder piston throw of lever, multiple spot position travel switch and above-mentioned programmable controller PLC communication
Connect.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that described hydraulic system also includes manual-operated emergent
Loop, manual-operated emergent loop is disposed with manual pressuring pump and hand-operated direction valve along fuel feeding direction.
Quick tensioning Hydraulic Station the most according to claim 6, it is characterised in that described hydraulic system has four kinds of Working moulds
Formula: the first motor is opened, and fast feed loop is tensioning hydro-cylinder fuel feeding, the second motor cuts out, and slow feeding loop is not for tensioning
Oil cylinder fuel feeding；First motor cuts out, and fast feed loop is not tensioning hydro-cylinder fuel feeding, and the second motor is opened, slow feeding loop
For tensioning hydro-cylinder fuel feeding；First motor and the second motor are opened simultaneously, and jog loop is eased up simultaneously for opening in fast feed loop
Locking oil cylinder fuel feeding；First motor and the second motor are turned off, and jog loop is eased up the most not for tensioning hydro-cylinder in fast feed loop
Fuel feeding, manual-operated emergent loop is opened as tensioning hydro-cylinder fuel feeding.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that described fuel tank includes rod chamber and without bar
Chamber, above-mentioned fast feed loop, slow feeding loop, manual-operated emergent loop are all connected with rod chamber；Going out of described first oil pump
Be disposed with along fuel feeding direction on oil feed line between hydraulic fluid port and the entrance point of solenoid directional control valve be connected the first check valve,
First fine filter and the first angle one-way valve, wherein, the oil feed line between the first fine filter and the first angle one-way valve
And between the oil-out of fuel tank, it is provided with the first overflow valve；The oil-out of described second oil pump and the entrance point of solenoid directional control valve it
Between oil feed line on be disposed with connected the second check valve, the second fine filter and the second right angle along fuel feeding direction unidirectional
Valve, is provided with the second overflow between oil feed line and the oil-out of fuel tank between the second fine filter and the second angle one-way valve
Valve；It is provided with between oil feed line and the oil-out of fuel tank between the oil-in end of the second angle one-way valve and solenoid directional control valve
Relief valve.
Quick tensioning Hydraulic Station the most according to claim 6, it is characterised in that described hydraulic system also includes shatter-proof pressure
Table and Accumulator arrangements, shock-proof pressure gauge and Accumulator arrangements all return with above-mentioned fast feed loop, slow feeding loop, manual-operated emergent
Road is connected, and Accumulator arrangements includes that two accumulators, one of them accumulator are joined with above-mentioned first check valve, the first angle one-way valve
Closing and form the first holding hydraulic pressure system, another one accumulator cooperatively forms with above-mentioned second check valve, the second angle one-way valve
Second holding hydraulic pressure system.
Quick tensioning Hydraulic Station the most according to claim 1, it is characterised in that between described first oil pump and fuel tank,
It is provided with oil-suction oil filter between two oil pumps and fuel tank, described fuel tank is provided with temperature liquid level meter and air filter.
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| CN201610380222.XA CN105909577B (en) | 2016-06-01 | 2016-06-01 | A kind of quick tensioning hydraulic station |
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| CN201610380222.XA CN105909577B (en) | 2016-06-01 | 2016-06-01 | A kind of quick tensioning hydraulic station |
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| CN105909577B CN105909577B (en) | 2018-05-15 |
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| CN108488119A (en) * | 2018-03-30 | 2018-09-04 | 东莞市环宇文化科技有限公司 | A kind of automatic erector with hydraulic control system |
| CN110030218A (en) * | 2019-05-15 | 2019-07-19 | 广州计量检测技术研究院 | Pump hydraulic loading system and its application method |
| CN112728197A (en) * | 2020-12-31 | 2021-04-30 | 山东鼎昌智能科技有限公司 | Mold injection molding machine and control system thereof |
| CN113847286A (en) * | 2021-09-30 | 2021-12-28 | 孙健 | Intelligent adjusting belt device |
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