CN105508320B - Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system - Google Patents
Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system Download PDFInfo
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- CN105508320B CN105508320B CN201610099673.6A CN201610099673A CN105508320B CN 105508320 B CN105508320 B CN 105508320B CN 201610099673 A CN201610099673 A CN 201610099673A CN 105508320 B CN105508320 B CN 105508320B
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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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/14—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with rotary servomotors
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system, including the first hydraulic pump；Second hydraulic pump；First check valve；Proportional velocity regulating valve；Second check valve；The control valve that pressure oil port is connected with the oil-out of the first check valve and the second check valve；The executing agency being connected with the actuator port of control valve；The load equipment being connected with executing agency；The pressure-control valve being connected with the pressure oil port oil inlet pipe of control valve；The pressure sensor of the pressure oil port oil-feed pipe pressure of detection control valve；The velocity sensor of detection load equipment motion；Controller；The variable-frequency governor of the first hydraulic pump drive motor；The controlling organization of the second hydraulic pump drive motor；The pressure signal of pressure sensor detection and the rate signal input controller of velocity sensor detection, the output end of controller are electrically connected with the controlling organization of the variable-frequency governor, proportional velocity regulating valve and the second hydraulic pump drive motor of the first hydraulic pump drive motor.
Description
Technical field
The present invention relates to technical field of hydraulic, more particularly to a kind of two parallel pumps hydraulic pressure converter plant；The present invention is also
It is related to a kind of drive system of refining glue machine cylinder.
Background technology
In the production equipment in many fields, governing system is widely used.Governing system includes Direct Current Governor System and exchanges
Frequency conversion speed-adjusting system.At present, ac variable frequency speed regulation is more more extensive than DC speed regulation application, and it is excellent that main cause is that alternating current generator has
More property, has superiority rather than Variable Frequency Speed Regulation Principle, and the armature and excitation of DC speed regulation are not couplings, be it is separate, this
Sample can accomplish precise control to armature supply and exciting current.And AC speed regulating, armature supply and exciting current are couplings,
Precise control cannot be accomplished, although current frequency control has vector controlled, that is, with modern control theory, led to
Vector median filters are crossed, the armature supply and exciting current that will be coupled in alternating current generator are untied, and so as to control it, that is, are imitated
The principle of true DC speed regulation.But the control characteristic for accomplishing DC speed regulation is currently highly difficult.And direct current speeder is multiple
Miscellaneous, relatively costly, maintenance is larger.
In the prior art, the hydraulic fluid flow rate regulation of hydraulic system, uses variable pump, controls valve, AC frequency conversion etc. many
Kind of mode, existing AC frequency conversion system has that low-speed stability is poor, and too slowly, Flow-rate adjustment precision is not high, system for system response
It is relatively inefficient, the defect such as flow adjustment range is smaller.And use the throttling technology regulation hydraulic pressure system such as variable pump and control valve
System flow, often less efficient, system heat generation amount is higher.
Rubber mixing machine it is general by base, frame, front and rear roller, travelling gear, reductor, roll-setting gear, roller temperature adjusting means,
Safety switch, electric control system etc. are constituted.In the prior art, rubber mixing machine roller is filled using by motor by machine driving
Put to drive rotation, cause whole machine heavy and huge, inconvenience is brought to device layout, installation, transport etc..Additionally, due to machine
The limitation of tool transmission, the speed between the adjacent roller of rubber mixing machine two is than being fixed, it is impossible to processed raw material and product according to different
Technological requirement is adjusted, thus is difficult to further reduce the volume of equipment, rubber mixing machine is had good flexibility, adapts to different
Rubber mixing technique.
CN103085188A discloses mill and the calender of hydraulic-driven, specifically discloses Hydraulic Station output and passes through
High pressure liquid force feed after voltage stabilizing, speed governing, hydraulic motor is entered by manipulating valve, and hydraulic energy is converted to mechanical energy by hydraulic motor.
The output shaft of hydraulic motor is connected with roller, can direct drive roller when hydraulic motor is rotated.But exist and lack speed governing skill
The defects such as art, it is difficult to adapt to different rubber mixing technique requirements.
The content of the invention
In order to overcome the defect of prior art, the present invention to provide a kind of good energy-conserving effect, efficiency high, system response time are more
Hurry up, the minimum output flow of system is smaller, output flow adjustable range is bigger, the bigger double pump of load equipment power regulating range is simultaneously
Connection hydraulic pressure converter plant and rubber mixing machine drum driven system.
In order to solve the above-mentioned technical problem, on the one hand, the present invention provides a kind of two parallel pumps hydraulic pressure converter plant, and it includes
First hydraulic pump；Second hydraulic pump；The first check valve that oil inlet is connected by oil pipe with the oil-out of first hydraulic pump；
The proportional velocity regulating valve being connected with the oil-out of second hydraulic pump by oil pipe；Oil inlet passes through oil pipe and the proportionality velocity modulation
Second check valve of the oil-out connection of valve；Pressure oil port is fuel-displaced by oil pipe and first check valve and the second check valve
The control valve of mouth connection；The executing agency being connected with the actuator port of the control valve by oil pipe；Connect with the executing agency
The load equipment for connecing；The pressure-control valve being connected with the pressure oil port oil inlet pipe of the control valve；The pressure of the detection control valve
The pressure sensor of power hydraulic fluid port oil-feed pipe pressure；Detect the velocity sensor of the load equipment motion；Controller；First hydraulic pressure
The variable-frequency governor of pump motor；The controlling organization of the second hydraulic pump drive motor；The pressure of the pressure sensor detection
Signal and the rate signal of velocity sensor detection are input into the controller, the output end of the controller and described first
The controlling organization electrical connection of the variable-frequency governor, proportional velocity regulating valve and the second hydraulic pump drive motor of hydraulic pump drive motor.
As the two parallel pumps hydraulic pressure converter plant that further improved technology scheme, the present invention are provided, first hydraulic pressure
One of pump and the second hydraulic pump are constant displacement pump, and another is variable pump.
As the two parallel pumps hydraulic pressure converter plant that further improved technology scheme, the present invention are provided, first hydraulic pressure
The rated output flow of pump and the second hydraulic pump calculates determination as follows,
Wherein:It is the greatest requirements flow of executing agency, L/min；
It is the rated output flow of the first hydraulic pump, L/min；
It is the rated output flow of the second hydraulic pump, L/min；
It is the minimum permission rotating speed of the first hydraulic pump, r/min；
It is the rated speed of the first hydraulic pump, r/min.
In order to solve the above-mentioned technical problem, on the other hand, the present invention provides a kind of rubber mixing machine drum driven system, and it includes
First hydraulic pump；Second hydraulic pump；The first check valve that oil inlet is connected by oil pipe with the oil-out of first hydraulic pump；
The proportional velocity regulating valve being connected with the oil-out of second hydraulic pump by oil pipe；Oil inlet passes through oil pipe and the proportionality velocity modulation
Second check valve of the oil-out connection of valve；Pressure oil port is fuel-displaced by oil pipe and first check valve and the second check valve
The three position four-way directional control valve of mouth connection；The hydraulic pressure horse being connected with two actuator ports of the three position four-way directional control valve by oil pipe
Reach；The refining glue machine cylinder being connected with the hydraulic motor transmission；Pressure oil port oil inlet pipe with the three position four-way directional control valve connects
The pressure-control valve for connecing；Detect the pressure sensor of the pressure oil port oil-feed pipe pressure of the three position four-way directional control valve；Detection institute
State the speed probe of rubber mixing machine drum rotation speed；Controller；The variable-frequency governor of the first hydraulic pump drive motor；Second hydraulic pump
The controlling organization of motor；The pressure signal of the pressure sensor detection and the rate signal of speed probe detection
It is input into variable-frequency governor, the ratio tune of the controller, the output end of the controller and the first hydraulic pump drive motor
The controlling organization electrical connection of fast valve and the second hydraulic pump drive motor.
As the rubber mixing machine drum driven system that further improved technology scheme, the present invention are provided, first hydraulic pump
It is constant displacement pump with one of the second hydraulic pump, another is variable pump.
As the rubber mixing machine drum driven system that further improved technology scheme, the present invention are provided, first hydraulic pump
Rated output flow with the second hydraulic pump calculates determination as follows,
Wherein:It is the maximum oil-feed flow of hydraulic motor, L/min；
It is the rated output flow of the first hydraulic pump, L/min；
It is the rated output flow of the second hydraulic pump, L/min；
It is the minimum permission rotating speed of the first hydraulic pump, r/min；
It is the rated speed of the first hydraulic pump, r/min.
In the case where not conflicting, above-mentioned improvement project can be implemented alone or in combination.
The technical scheme that the present invention is provided, the first hydraulic pump and fixed rotating speed that frequency control motor drives is motor-driven
Second hydraulic pump composes in parallel oil supply system, and the relevant parameter of the first hydraulic pump and the second hydraulic pump meets the highest of executing agency
The requirement of pressure and flow.The inspection that the speed of load equipment motion and the pressure oil port oil-feed pipe pressure of control valve pass through sensor
Survey feeds back to controller, and the Setting signal with controller constitutes close loop control circuit.Proportional velocity regulating valve is used to adjust the second hydraulic pressure
Pump is incorporated into the flow in hydraulic system, in the transit time when load equipment in low cruise to high-speed cruising phase transition,
Proportional velocity regulating valve ensures output flow consecutive variations, does not jump.
Compared to the technical scheme that the hydraulic system of single hydraulic pressure pump frequency converting speed regulating fuel feeding, the present invention are provided, the first hydraulic pump
Metered flow is reduced to half of hydraulic system maximum output flow or so, and rotary inertia is smaller, therefore system response time is more
Hurry up.The output flow of the first hydraulic pump reduces, and the minimum output flow of system adjustable section is smaller, load equipment power adjustable section model
Enclose bigger.
Hydraulic pump typically has a minimum speed requirement, the technical scheme that the present invention is provided, due to variable-frequency motor drive the
One hydraulic pump metered flow only has half of system maximum output flow or so, so the more conventional single hydraulic pressure of minimum output flow becomes
Frequency modulation speed fuel feeding hydraulic system reduces half or so, thus the output flow adjustable range of hydraulic system is bigger.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, constitutes the part of the application, but does not constitute to this hair
Bright improper restriction.In the accompanying drawings：
Fig. 1 is the schematic diagram of embodiment two parallel pumps hydraulic pressure converter plant；
Fig. 2 is the schematic diagram of embodiment rubber mixing machine drum driven system.
Specific embodiment
Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.
Two parallel pumps hydraulic pressure converter plant as shown in Figure 1, including the first hydraulic pump 1；It is connected in parallel with the first hydraulic pump 1
The second hydraulic pump 2；The first check valve 3 that oil inlet is connected by oil pipe with the oil-out of the first hydraulic pump 1；By oil pipe with
The proportional velocity regulating valve 4 of the oil-out connection of the second hydraulic pump 2；Oil inlet is connected by oil pipe with the oil-out of proportional velocity regulating valve 4
The second check valve 5；The control valve that pressure oil port is connected by oil pipe with the oil-out of the first check valve 3 and the second check valve 5；
The executing agency being connected with the actuator port of control valve by oil pipe；The load equipment being connected with executing agency；With control valve
The pressure-control valve 6 of pressure oil port oil inlet pipe connection；The pressure sensing of the pressure oil port oil-feed pipe pressure of the detection control valve
Device；The velocity sensor of detection load equipment motion；Controller；The variable-frequency governor of the motor of the first hydraulic pump 1；Second liquid
The controlling organization of the motor of press pump 2；The pressure signal of pressure sensor detection and the rate signal of velocity sensor detection are defeated
Enter variable-frequency governor, the liquid of proportional velocity regulating valve 4 and second of controller, the output end of controller and the motor of the first hydraulic pump 1
The controlling organization electrical connection of the motor of press pump 2.
Alternatively, one of the first hydraulic pump 1 and the second hydraulic pump 2 are constant displacement pump, and another is variable pump.
Alternatively, the rated output flow of the first hydraulic pump 1 and the second hydraulic pump 2 calculates determination as follows,
Wherein:It is the greatest requirements flow of executing agency, L/min；
It is the rated output flow of the first hydraulic pump 1, L/min；
It is the rated output flow of the second hydraulic pump 2, L/min；
It is the minimum permission rotating speed of the first hydraulic pump 1, r/min；
It is the rated speed of the first hydraulic pump 1, r/min.
Operation principle：The first hydraulic pump 1 and motor-driven second hydraulic pump 2 of fixed rotating speed that frequency control motor drives
Compose in parallel oil supply system, the relevant parameter of the first hydraulic pump 1 and the second hydraulic pump 2 meets the maximum pressure and stream of executing agency
The requirement of amount.The speed of load equipment motion and the pressure oil port oil-feed pipe pressure of control valve are fed back to by the detection of sensor
Controller, the Setting signal with controller constitutes close loop control circuit.Proportional velocity regulating valve 4 is used for the second hydraulic pump 2 of regulation and is incorporated to
Flow in hydraulic system, pressure-control valve 6 limits the maximum pressure of hydraulic system as safety valve.
In the load equipment low cruise stage, controller controls the second hydraulic pump 2 to shut down, and the first hydraulic pump 1 is independent
Operation adjusts output flow by motor variable-frequency speed-regulating；In the load equipment high-speed cruising stage, controller controls the second hydraulic pump 2
Start, there is provided a part for flow needed for system, the first hydraulic pump 1 leads on the basis of the firm discharge that the second hydraulic pump 2 is provided
Cross motor variable-frequency speed-regulating regulation output flow.When load equipment transit time from low cruise to high-speed cruising phase transition
Interior, proportional velocity regulating valve 4 ensures output flow consecutive variations, does not jump.After the completion of transient process, proportional velocity regulating valve 4 is opened
Mouth is maximum.
In the technical scheme provided compared to the hydraulic system of single hydraulic pressure pump frequency converting speed regulating fuel feeding, the present invention, the first hydraulic pump 1
Metered flow be reduced to half of hydraulic system maximum output flow or so, rotary inertia is smaller, therefore system response time
Faster.The metered flow of the first hydraulic pump 1 reduces, and the minimum output flow of system adjustable section is smaller, load equipment power adjustable
Adjusting range is bigger.
Hydraulic pump typically has minimum speed requirement, and such as gear pump is generally 300r/min, and plunger displacement pump is generally 600r/
min.The technical scheme that the present invention is provided, because the discharge capacity of the first hydraulic pump 1 that variable-frequency motor drives only has system output stream amount
Half or so, so the more conventional single hydraulic pressure frequency control hydraulic system of minimum output flow reduces half or so, thus output stream
Amount adjustable range is bigger.
Because hydraulic pump has minimum speed to limit, there is speed governing blind area in frequency control hydraulic system in low-speed stage.If liquid
The rated discharge of press pump is, it is minimum permission rotating speed be, rated speed is, then the output flow of hydraulic pump 0~Between it is non-adjustable.If the discharge capacity of the first hydraulic pump 1 and the second hydraulic pump 2 is according to load greatest requirements flow average mark
Match somebody with somebody, in the centre of flow changing curve, one section will appear from blind area.
If load greatest requirements flow is, the rated output flow of the first hydraulic pump 1 that variable-frequency motor drivesGu,
Determining the motor-driven rated output flow of second hydraulic pump 2 of rotating speed is, when the flow between two pumps meets:
When, the Flow-rate adjustment blind area of foregoing presence can be overcome.
For example:Certain hydraulic system maximum demand flow is 80L/min, and hydraulic pump is minimum to allow rotating speed for 300r/min, liquid
Press pump rated speed 1500r/min.If two hydraulic pump mean allocation flows, by the hydraulic pump of variable-frequency motor driving in 0-
Can not be adjusted in the output flow range of 8L/min, it is meant that the output flow of hydraulic system 40L/min~48L/min this
Section is unadjustable.Calculated according to above formula, by using the second of the flow of the first hydraulic pump 1 of frequency control and fixed rotating speed
The flow of hydraulic pump 2 is respectively chosen as 44.5L/min and 35.5L/min, and the first hydraulic pressure is passed through in the range of 8~44.5L/min
Pump 1 carries out frequency conversion Flow-rate adjustment；The second hydraulic pump 2 provides the fixation of 35.5L/min in the range of 44.5L/min~80L/min
Flow, the first hydraulic pump 1 provides changeable flow part.
Rubber mixing machine drum driven system as shown in Figure 2, including the first hydraulic pump 1；It is connected in parallel with first hydraulic pump 1
Second hydraulic pump 2；The first check valve 3 that oil inlet is connected by oil pipe with the oil-out of the first hydraulic pump 1；By oil pipe and
The proportional velocity regulating valve 4 of the oil-out connection of two hydraulic pumps 2；Oil inlet is connected by oil pipe with the oil-out of proportional velocity regulating valve 4
Second check valve 5；The 3-position 4-way that pressure oil port is connected by oil pipe with the oil-out of the first check valve 3 and the second check valve 5
Reversal valve 7；The hydraulic motor 8 being connected with two actuator ports of three position four-way directional control valve 7 by oil pipe；It is driven with hydraulic motor 8
The refining glue machine cylinder of connection；The pressure-control valve 6 being connected with the pressure oil port oil inlet pipe of three position four-way directional control valve 7；Detection three
The pressure sensor of the pressure oil port oil-feed pipe pressure of four-way reversing valve 7；Detect the speed probe of rubber mixing machine drum rotation speed；Control
Device processed；The variable-frequency governor of the motor of the first hydraulic pump 1；The controlling organization of the motor of the second hydraulic pump 2；Pressure sensor
The rate signal input controller of pressure signal and the speed probe detection of detection, the output end of controller and the first hydraulic pump
The controlling organization electrical connection of the variable-frequency governor, the motor of 4 and second hydraulic pump of proportional velocity regulating valve 2 of 1 motor.
Alternatively, one of the first hydraulic pump 1 and the second hydraulic pump 2 are constant displacement pump, and another is variable pump.
Alternatively, the rated output flow of the first hydraulic pump 1 and the second hydraulic pump 2 calculates determination as follows,
Wherein:For the maximum of hydraulic motor 8 enters flow quantity, L/min；
It is the rated output flow of the first hydraulic pump 1, L/min；
It is the rated output flow of the second hydraulic pump 2, L/min；
It is the minimum permission rotating speed of the first hydraulic pump 1, r/min；
It is the rated speed of the first hydraulic pump 1, r/min.
Operation principle：The first hydraulic pump 1 and motor-driven second hydraulic pump 2 of fixed rotating speed that frequency control motor drives
Compose in parallel oil supply system, the relevant parameter of the first hydraulic pump 1 and the second hydraulic pump 2 meet hydraulic motor 8 maximum pressure and
The requirement of flow.The inspection that the pressure oil port oil-feed pipe pressure of rubber mixing machine drum rotation speed and three position four-way directional control valve 7 passes through sensor
Survey feeds back to controller, and the Setting signal with controller constitutes close loop control circuit.Proportional velocity regulating valve 4 is used to adjust the second hydraulic pressure
Pump 2 is incorporated into the flow in hydraulic system, and pressure-control valve 6 limits the maximum pressure of hydraulic system as safety valve.
In the refining glue machine cylinder low cruise stage, controller controls the second hydraulic pump 2 to shut down, and the first hydraulic pump 1 is single
Solely operation adjusts output flow by motor variable-frequency speed-regulating；In the refining glue machine cylinder high-speed cruising stage, controller controls the second liquid
Press pump 2 starts, there is provided a part for flow needed for system, the firm discharge basis that the first hydraulic pump 1 is provided in the second hydraulic pump 2
On output flow is adjusted by motor variable-frequency speed-regulating.When load equipment is in transition of the low cruise to high-speed cruising phase transition
Interior, proportional velocity regulating valve 4 ensures output flow consecutive variations, does not jump.After the completion of transient process, proportional velocity regulating valve 4
It is maximum to be open.
In the technical scheme provided compared to the hydraulic system of single hydraulic pressure pump frequency converting speed regulating fuel feeding, the present invention, the first hydraulic pump 1
Metered flow be reduced to half of hydraulic system maximum output flow or so, rotary inertia is smaller, therefore system response time
Faster.The metered flow of the first hydraulic pump 1 reduces, and the minimum output flow of system adjustable section is smaller, and refining glue machine cylinder power can
Adjustable range is bigger, rubber mixing machine is had good flexibility, adapts to different rubber mixing techniques.
The rated output flow selection of the first hydraulic pump 1 and the second hydraulic pump 2, refers to foregoing related content, no longer weighs
State.
It is clear that the invention is not restricted to above preferred embodiment, can also limit in the claims in the present invention and specification
In spiritual, the conversion and improvement of diversified forms are carried out, same technical problem can be solved, and obtain expected technique effect, therefore
Do not repeat.One of ordinary skill in the art can from present disclosure directly or all schemes for associating, if
Within the spirit that claim is limited, protection scope of the present invention is fallen within.
Claims (6)
1. a kind of two parallel pumps hydraulic pressure converter plant, it is characterised in that:Including the first hydraulic pump（1）；Second hydraulic pump（2）；Enter
Hydraulic fluid port passes through oil pipe and first hydraulic pump（1）Oil-out connection the first check valve（3）；By oil pipe and described second
Hydraulic pump（2）Oil-out connection proportional velocity regulating valve（4）；Oil inlet passes through oil pipe and the proportional velocity regulating valve（4）It is fuel-displaced
Second check valve of mouth connection（5）；Pressure oil port passes through oil pipe and first check valve（3）With the second check valve（5）Go out
The control valve of hydraulic fluid port connection；The executing agency being connected with the actuator port of the control valve by oil pipe；With the executing agency
The load equipment of connection；The pressure-control valve being connected with the pressure oil port oil inlet pipe of the control valve（6）；Detect the control valve
Pressure oil port oil-feed pipe pressure pressure sensor；Detect the velocity sensor of the load equipment motion；Controller；First
Hydraulic pump（1）The variable-frequency governor of motor；Second hydraulic pump（2）The controlling organization of motor；The pressure sensor
The pressure signal of detection and the rate signal of velocity sensor detection are input into the controller, the output end of the controller
With first hydraulic pump（1）The variable-frequency governor of motor, proportional velocity regulating valve（4）With the second hydraulic pump（2）Motor
Controlling organization electrical connection.
2. two parallel pumps hydraulic pressure converter plant according to claim 1, it is characterised in that：First hydraulic pump（1）With
Second hydraulic pump（2）One of them is constant displacement pump, and another is variable pump.
3. two parallel pumps hydraulic pressure converter plant according to claim 1, it is characterised in that：First hydraulic pump（1）With
Second hydraulic pump（2）Rated output flow calculate determination as follows,
Wherein:It is the greatest requirements flow of executing agency, L/min；
It is the first hydraulic pump（1）Rated output flow, L/min；
It is the second hydraulic pump（2）Rated output flow, L/min；
It is the first hydraulic pump（1）Minimum permission rotating speed, r/min；
It is the first hydraulic pump（1）Rated speed, r/min.
4. a kind of rubber mixing machine drum driven system, it is characterised in that：Including the first hydraulic pump（1）；Second hydraulic pump（2）；Oil-feed
Mouth passes through oil pipe and first hydraulic pump（1）Oil-out connection the first check valve（3）；By oil pipe and second liquid
Press pump（2）Oil-out connection proportional velocity regulating valve（4）；Oil inlet passes through oil pipe and the proportional velocity regulating valve（4）Oil-out
Second check valve of connection（5）；Pressure oil port passes through oil pipe and first check valve（3）With the second check valve（5）It is fuel-displaced
The three position four-way directional control valve of mouth connection（7）；By oil pipe and the three position four-way directional control valve（7）Two actuator ports connection liquid
Pressure motor（8）；With the hydraulic motor（8）The refining glue machine cylinder of drive connection；With the three position four-way directional control valve（7）Pressure
The pressure-control valve of hydraulic fluid port oil inlet pipe connection（6）；Detect the three position four-way directional control valve（7）Pressure oil port oil-feed pipe pressure
Pressure sensor；Detect the speed probe of the rubber mixing machine drum rotation speed；Controller；First hydraulic pump（1）Motor
Variable-frequency governor；Second hydraulic pump（2）The controlling organization of motor；The pressure signal of pressure sensor detection and described
The rate signal of speed probe detection is input into the controller, the output end of the controller and first hydraulic pump（1）
The variable-frequency governor of motor, proportional velocity regulating valve（4）With the second hydraulic pump（2）The controlling organization electrical connection of motor.
5. rubber mixing machine drum driven system according to claim 4, it is characterised in that：First hydraulic pump（1）With
Two hydraulic pumps（2）One of them is constant displacement pump, and another is variable pump.
6. rubber mixing machine drum driven system according to claim 4, it is characterised in that：First hydraulic pump（1）With
Two hydraulic pumps（2）Rated output flow calculate determination as follows,
Wherein:It is hydraulic motor（8）Maximum oil-feed flow, L/min；
It is the first hydraulic pump（1）Rated output flow, L/min；
It is the second hydraulic pump（2）Rated output flow, L/min；
It is the first hydraulic pump（1）Minimum permission rotating speed, r/min；
It is the first hydraulic pump（1）Rated speed, r/min.
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| CN201610099673.6A CN105508320B (en) | 2016-02-24 | 2016-02-24 | Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system |
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| CN201610099673.6A CN105508320B (en) | 2016-02-24 | 2016-02-24 | Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system |
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| CN105508320B true CN105508320B (en) | 2017-06-16 |
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| CN106286484A (en) * | 2016-08-29 | 2017-01-04 | 陈泳东 | A kind of mechanical-hydraulic compound gearing |
| CN112343894A (en) * | 2020-11-05 | 2021-02-09 | 北京航天发射技术研究所 | Launch vehicle and be applied to its exhibition car and erect hydraulic system's combination servo oil source device |
| CN114294303A (en) * | 2022-01-05 | 2022-04-08 | 三一汽车起重机械有限公司 | Power-adjustable hydraulic system, power-adjustable hydraulic method and working machine |
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| CN105508320A (en) | 2016-04-20 |
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