CN205401271U - Parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system - Google Patents
Parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system Download PDFInfo
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- CN205401271U CN205401271U CN201620137274.XU CN201620137274U CN205401271U CN 205401271 U CN205401271 U CN 205401271U CN 201620137274 U CN201620137274 U CN 201620137274U CN 205401271 U CN205401271 U CN 205401271U
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- hydraulic pump
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- pressure
- hydraulic
- control valve
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Abstract
The utility model provides a parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system, includes first hydraulic pump, the second hydraulic pump, first check valve, the proportion governing valve, the second check valve, the control valve that pressure hydraulic fluid port and the oil -out of first check valve and second check valve are connected, the actuating mechanism who is connected with the actuator port of control valve, the oading equipment who is connected with actuating mechanism, advance the pressure control valve that oil pipe is connected with the pressure hydraulic fluid port of control valve, the pressure hydraulic fluid port that detects the control valve advances tubing pressure's pressure sensor, detect the speedtransmitter of oading equipment motion, a controller. The variable frequency speed governing(VFSG) ware of a hydraulic pump drive motor, the control mechanism of the 2nd hydraulic pump drive motor, the speed signal input controller that pressure sensor's pressure signal and speedtransmitter detected, the output of controller with the control mechanism electricity of variable frequency speed governing(VFSG) ware, proportion governing valve and the 2nd hydraulic pump drive motor of a hydraulic pump drive motor is connected.
Description
Technical field
This utility model relates to technical field of hydraulic, particularly relates to a kind of two parallel pumps hydraulic pressure converter plant；This utility model further relates to the drive system of a kind of rubber mixing machine cylinder.
Background technology
Production equipment in a lot of fields, widely uses governing system.Governing system includes Direct Current Governor System and AC variable-frequency speed regulation system.At present, ac variable frequency speed regulation is more more extensive than DC speed regulation application, and main cause is that alternating current generator has superiority, rather than Variable Frequency Speed Regulation Principle has superiority, the armature of DC speed regulation and excitation are not couplings, separate, so armature supply and exciting current can be accomplished accurate control.And AC speed regulating, armature supply and exciting current are couplings, accurately control cannot be accomplished, although current frequency control has vector controlled, namely use modern control theory, by vector median filters, the armature supply coupled in alternating current generator and exciting current are untied, thus it is controlled, namely emulate the principle of DC speed regulation.But it is highly difficult to accomplish that the control characteristic of DC speed regulation is currently.And direct current speeder is complicated, relatively costly, maintenance is bigger.
In prior art, the hydraulic fluid flow rate of hydraulic system regulates, and has employing variable pump, controls valve, the various ways such as AC frequency conversion, there is low-speed stability difference in existing AC frequency conversion system, system response is too slow, the defects such as Flow-rate adjustment precision is not high, and system effectiveness is relatively low, and flow adjustment range is less.And adopt variable pump and control the throttling technology adjustment flow rate of hydraulic system such as valve, often inefficient, system heat generation amount is higher.
Rubber mixing machine is generally regulated device, safety switch, electric control system etc. formed by base, frame, front and back roller, travelling gear, reductor, roll-setting gear, roller temperature.In prior art, rubber mixing machine roller all adopts and is driven rotation by motor by mechanical driving device, causes complete machine heavy and huge, brings inconvenience to device layout, installation, transport etc..Additionally, due to mechanically operated restriction, speed ratio between the adjacent roller of rubber mixing machine two is fixing, it is impossible to processes raw material and Product Process requires to adjust according to different, thus is difficult to reduce further the volume of equipment, make rubber mixing machine have good motility, adapt to different rubber mixing techniques.
CN103085188A discloses hydraulically powered mill and calender, specifically discloses Hydraulic Station output high pressure liquid force feed after voltage stabilizing, speed governing, enters hydraulic motor by handling valve, and hydraulic energy is converted to mechanical energy by hydraulic motor.The output shaft of hydraulic motor is connected with roller, can direct driving roller when hydraulic motor rotates.But there is defects such as lacking speed adjusting technique, it is difficult to adapt to different rubber mixing technique requirements.
Utility model content
In order to overcome the defect of prior art, this utility model provides a kind of good energy-conserving effect, efficiency height, system response time are faster, the minimum output flow of system is less, output flow range of accommodation is bigger, two parallel pumps hydraulic pressure converter plant that load equipment power regulating range is bigger and rubber mixing machine drum driven system.
In order to solve above-mentioned technical problem, on the one hand, this utility model provides a kind of two parallel pumps hydraulic pressure converter plant, and it includes the first hydraulic pump；Second hydraulic pump；The first check valve that oil-in is connected with the oil-out of described first hydraulic pump by oil pipe；By the proportional velocity regulating valve that the oil-out of oil pipe with described second hydraulic pump is connected；The second check valve that oil-in is connected with the oil-out of described proportional velocity regulating valve by oil pipe；The control valve that pressure oil port is connected with the oil-out of described first check valve and the second check valve by oil pipe；By the actuator that the actuator port of oil pipe with described control valve is connected；The load equipment being connected with described actuator；The pressure-control valve being connected with the pressure oil port oil inlet pipe of described control valve；Detect the pressure transducer of the pressure oil port oil inlet pipe pressure of described control valve；Detect the velocity sensor of described 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 described pressure transducer detection and the rate signal of described velocity sensor detection input described controller, and the outfan of described controller electrically connects with the controlling organization of the variable-frequency governor of described first hydraulic pump drive motor, proportional velocity regulating valve and the second hydraulic pump drive motor.
As further improvement opportunity scheme, the two parallel pumps hydraulic pressure converter plant that this utility model provides, described first hydraulic pump and the second hydraulic pump, one of them is dosing pump, and another is variable pump.
In order to solve above-mentioned technical problem, on the other hand, this utility model provides a kind of rubber mixing machine drum driven system, and it includes the first hydraulic pump；Second hydraulic pump；The first check valve that oil-in is connected with the oil-out of described first hydraulic pump by oil pipe；By the proportional velocity regulating valve that the oil-out of oil pipe with described second hydraulic pump is connected；The second check valve that oil-in is connected with the oil-out of described proportional velocity regulating valve by oil pipe；The three position four-way directional control valve that pressure oil port is connected with the oil-out of described first check valve and the second check valve by oil pipe；By the hydraulic motor that oil pipe is connected with two actuator ports of described three position four-way directional control valve；The rubber mixing machine cylinder being connected with described hydraulic motor transmission；The pressure-control valve being connected with the pressure oil port oil inlet pipe of described three position four-way directional control valve；Detect the pressure transducer of the pressure oil port oil inlet pipe pressure of described three position four-way directional control valve；Detect the speed probe of described rubber mixing machine drum rotation speed；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 described pressure transducer detection and the rate signal of described speed probe detection input described controller, and the outfan of described controller electrically connects with the controlling organization of the variable-frequency governor of described first hydraulic pump drive motor, proportional velocity regulating valve and the second hydraulic pump drive motor.
As further improvement opportunity scheme, the rubber mixing machine drum driven system that this utility model provides, described first hydraulic pump and the second hydraulic pump, one of them is dosing pump, and another is variable pump.
The technical scheme that this utility model provides, 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, and the relevant parameter of the first hydraulic pump 1 and the second hydraulic pump 2 meets the maximum pressure of actuator and the requirement of flow.The speed of load equipment motion and the pressure oil port oil inlet pipe pressure of control valve feed back to controller by the detection of sensor, form close loop control circuit with the Setting signal of controller.Proportional velocity regulating valve 4 is for regulating the flow that the second hydraulic pump 2 is incorporated in hydraulic system, and when load equipment at low cruise in the transit time of high-speed cruising phase transition, proportional velocity regulating valve 4 ensures output flow consecutive variations, does not jump.
Comparing the hydraulic system of single hydraulic pump frequency control fuel feeding, the technical scheme that this utility model provides, the metered flow of the first hydraulic pump 1 is reduced to about the half of the maximum output flow of hydraulic system, and rotary inertia is less, and therefore system response time is faster.The output flow of the first hydraulic pump 1 reduces, and the minimum output flow of system adjustable joint is less, and load equipment power adjustable adjusting range is bigger.
Hydraulic pump generally has minimum speed requirement, the technical scheme that this utility model provides, the first hydraulic pump 1 metered flow driven due to frequency conversion motor only has about the half of the maximum output flow of system, so the more conventional single hydraulic pressure frequency control fuel feeding hydraulic system of minimum output flow reduces about half, thus the output flow range of accommodation of hydraulic system is bigger.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, constitutes the part of the application, but is not intended that improper restriction of the present utility model.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.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Two parallel pumps hydraulic pressure converter plant as shown in Figure 1, including the first hydraulic pump 1；The second hydraulic pump 2 being connected in parallel with the first hydraulic pump 1；The first check valve 3 that oil-in is connected by the oil-out of oil pipe and the first hydraulic pump 1；By the proportional velocity regulating valve 4 that the oil-out of oil pipe and the second hydraulic pump 2 connects；The second check valve 5 that oil-in is connected with the oil-out of proportional velocity regulating valve 4 by oil pipe；The control valve that pressure oil port is connected by the oil-out of oil pipe and the first check valve 3 and the second check valve 5；By the actuator that oil pipe is connected with the actuator port controlling valve；The load equipment being connected with actuator；The pressure-control valve 6 being connected with the pressure oil port oil inlet pipe controlling valve；Detect the pressure transducer of the pressure oil port oil inlet pipe pressure of described control valve；The velocity sensor of detection load equipment motion；Controller；The variable-frequency governor of the first hydraulic pump 1 drive motor；The controlling organization of the second hydraulic pump 2 drive motor；The pressure signal of pressure transducer detection and the rate signal input controller of velocity sensor detection, the controlling organization electrical connection of the outfan of controller and the variable-frequency governor of the first hydraulic pump 1 drive motor, proportional velocity regulating valve 4 and the second hydraulic pump 2 drive motor.
Alternatively, the first hydraulic pump 1 and the second hydraulic pump 2 one of them be dosing pump, another is variable pump.
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, and the relevant parameter of the first hydraulic pump 1 and the second hydraulic pump 2 meets the maximum pressure of actuator and the requirement of flow.The speed of load equipment motion and the pressure oil port oil inlet pipe pressure of control valve feed back to controller by the detection of sensor, form close loop control circuit with the Setting signal of controller.Proportional velocity regulating valve 4 is for regulating the flow that the second hydraulic pump 2 is incorporated in hydraulic system, and pressure-control valve 6 limits the maximum pressure of hydraulic system as relief valve.
In the load equipment low cruise stage, controller controls the second hydraulic pump 2 and shuts down, and the first hydraulic pump 1 isolated operation regulates output flow by motor variable-frequency speed-regulating；In the load equipment high-speed cruising stage, controller controls the second hydraulic pump 2 and starts, it is provided that a part for system necessary flow, and the first hydraulic pump 1 regulates output flow by motor variable-frequency speed-regulating on the firm discharge basis that the second hydraulic pump 2 provides.When load equipment at low cruise in the transit time of high-speed cruising phase transition, proportional velocity regulating valve 4 ensures output flow consecutive variations, does not jump.After transient process completes, proportional velocity regulating valve 4 opening is maximum.
Comparing the hydraulic system of single hydraulic pump frequency control fuel feeding, in the technical scheme that this utility model provides, the metered flow of the first hydraulic pump 1 is reduced to about the half of the maximum output flow of hydraulic system, and rotary inertia is less, and therefore system response time is faster.The metered flow of the first hydraulic pump 1 reduces, and the minimum output flow of system adjustable joint is less, and load equipment power adjustable adjusting range is bigger.
Hydraulic pump generally has minimum speed requirement, for instance gear pump is generally 300r/min, and plunger displacement pump is generally 600r/min.The technical scheme that this utility model provides, the first hydraulic pump 1 discharge capacity driven due to frequency conversion motor only has about the half of system output stream amount, so the more conventional single hydraulic pressure frequency control hydraulic system of minimum output flow reduces about half, thus output flow range of accommodation is bigger.
Rubber mixing machine drum driven system as shown in Figure 2, including the first hydraulic pump 1；The second hydraulic pump 2 being connected in parallel with the first hydraulic pump 1；The first check valve 3 that oil-in is connected by the oil-out of oil pipe and the first hydraulic pump 1；By the proportional velocity regulating valve 4 that the oil-out of oil pipe and the second hydraulic pump 2 connects；The second check valve 5 that oil-in is connected with the oil-out of proportional velocity regulating valve 4 by oil pipe；The three position four-way directional control valve 7 that pressure oil port is connected by the oil-out of oil pipe and the first check valve 3 and the second check valve 5；By the hydraulic motor 8 that oil pipe is connected with two actuator ports of three position four-way directional control valve 7；The rubber mixing machine cylinder being in transmission connection with hydraulic motor 8；The pressure-control valve 6 being connected with the pressure oil port oil inlet pipe of three position four-way directional control valve 7；The pressure transducer of the pressure oil port oil inlet pipe pressure of detection three position four-way directional control valve 7；The speed probe of detection rubber mixing machine drum rotation speed；Controller；The variable-frequency governor of the first hydraulic pump 1 drive motor；The controlling organization of the second hydraulic pump 2 drive motor；The pressure signal of pressure transducer detection and the rate signal input controller of speed probe detection, the controlling organization electrical connection of the outfan of controller and the variable-frequency governor of the first hydraulic pump 1 drive motor, proportional velocity regulating valve 4 and the second hydraulic pump 2 drive motor.
Alternatively, the first hydraulic pump 1 and the second hydraulic pump 2 one of them be dosing pump, another is variable pump.
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, and the relevant parameter of the first hydraulic pump 1 and the second hydraulic pump 2 meets the maximum pressure of hydraulic motor 8 and the requirement of flow.The pressure oil port oil inlet pipe pressure of rubber mixing machine drum rotation speed and three position four-way directional control valve 7 feeds back to controller by the detection of sensor, forms close loop control circuit with the Setting signal of controller.Proportional velocity regulating valve 4 is for regulating the flow that the second hydraulic pump 2 is incorporated in hydraulic system, and pressure-control valve 6 limits the maximum pressure of hydraulic system as relief valve.
In the rubber mixing machine cylinder low cruise stage, controller controls the second hydraulic pump 2 and shuts down, and the first hydraulic pump 1 isolated operation regulates output flow by motor variable-frequency speed-regulating；In the rubber mixing machine cylinder high-speed cruising stage, controller controls the second hydraulic pump 2 and starts, it is provided that a part for system necessary flow, and the first hydraulic pump 1 regulates output flow by motor variable-frequency speed-regulating on the firm discharge basis that the second hydraulic pump 2 provides.When load equipment at low cruise in the transit time of high-speed cruising phase transition, proportional velocity regulating valve 4 ensures output flow consecutive variations, does not jump.After transient process completes, proportional velocity regulating valve 4 opening is maximum.
Comparing the hydraulic system of single hydraulic pump frequency control fuel feeding, in the technical scheme that this utility model provides, the metered flow of the first hydraulic pump 1 is reduced to about the half of the maximum output flow of hydraulic system, and rotary inertia is less, and therefore system response time is faster.The metered flow of the first hydraulic pump 1 reduces, and the minimum output flow of system adjustable joint is less, and rubber mixing machine cylinder power adjustable adjusting range is bigger, makes rubber mixing machine have good motility, adapts to different rubber mixing techniques.
Obviously, this utility model is not limited to above preferred implementation, also in the spirit that this utility model claim and description limit, can carry out conversion and the improvement of various ways, can solve same technical problem, and obtain intended technique effect, therefore not repeat.Those of ordinary skill in the art can from this utility model disclosure directly or all schemes associated, as long as within the spirit that claim limits, falling within protection domain of the present utility model.
Claims (4)
1. a two parallel pumps hydraulic pressure converter plant, it is characterised in that: include the first hydraulic pump (1)；Second hydraulic pump (2)；The first check valve (3) that oil-in is connected with the oil-out of described first hydraulic pump (1) by oil pipe；By the proportional velocity regulating valve (4) that the oil-out of oil pipe with described second hydraulic pump (2) is connected；The second check valve (5) that oil-in is connected with the oil-out of described proportional velocity regulating valve (4) by oil pipe；The control valve that pressure oil port is connected with the oil-out of described first check valve (3) and the second check valve (5) by oil pipe；By the actuator that the actuator port of oil pipe with described control valve is connected；The load equipment being connected with described actuator；The pressure-control valve (6) being connected with the pressure oil port oil inlet pipe of described control valve；Detect the pressure transducer of the pressure oil port oil inlet pipe pressure of described control valve；Detect the velocity sensor of described load equipment motion；Controller；The variable-frequency governor of the first hydraulic pump (1) drive motor；The controlling organization of the second hydraulic pump (2) drive motor；The pressure signal of described pressure transducer detection and the rate signal of described velocity sensor detection input described controller, and the outfan of described controller electrically connects with the controlling organization of the variable-frequency governor of described first hydraulic pump (1) drive motor, proportional velocity regulating valve (4) and the second hydraulic pump (2) drive motor.
2. two parallel pumps hydraulic pressure converter plant according to claim 1, it is characterised in that: described first hydraulic pump (1) and the second hydraulic pump (2) one of them be dosing pump, another is variable pump.
3. a rubber mixing machine drum driven system, it is characterised in that: include the first hydraulic pump (1)；Second hydraulic pump (2)；The first check valve (3) that oil-in is connected with the oil-out of described first hydraulic pump (1) by oil pipe；By the proportional velocity regulating valve (4) that the oil-out of oil pipe with described second hydraulic pump (2) is connected；The second check valve (5) that oil-in is connected with the oil-out of described proportional velocity regulating valve (4) by oil pipe；The three position four-way directional control valve (7) that pressure oil port is connected with the oil-out of described first check valve (3) and the second check valve (5) by oil pipe；By the hydraulic motor (8) that two actuator ports of oil pipe with described three position four-way directional control valve (7) are connected；The rubber mixing machine cylinder being in transmission connection with described hydraulic motor (8)；The pressure-control valve (6) being connected with the pressure oil port oil inlet pipe of described three position four-way directional control valve (7)；Detect the pressure transducer of the pressure oil port oil inlet pipe pressure of described three position four-way directional control valve (7)；Detect the speed probe of described rubber mixing machine drum rotation speed；Controller；The variable-frequency governor of the first hydraulic pump (1) drive motor；The controlling organization of the second hydraulic pump (2) drive motor；The pressure signal of described pressure transducer detection and the rate signal of described speed probe detection input described controller, and the outfan of described controller electrically connects with the controlling organization of the variable-frequency governor of described first hydraulic pump (1) drive motor, proportional velocity regulating valve (4) and the second hydraulic pump (2) drive motor.
4. rubber mixing machine drum driven system according to claim 3, it is characterised in that: described first hydraulic pump (1) and the second hydraulic pump (2) one of them be dosing pump, another is variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137274.XU CN205401271U (en) | 2016-02-24 | 2016-02-24 | Parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620137274.XU CN205401271U (en) | 2016-02-24 | 2016-02-24 | Parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system |
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| Publication Number | Publication Date |
|---|---|
| CN205401271U true CN205401271U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620137274.XU Withdrawn - After Issue CN205401271U (en) | 2016-02-24 | 2016-02-24 | Parallelly connected hydraulic pressure deflector of double pump and rubber mixing machine pulley drive system |
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| CN (1) | CN205401271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508320A (en) * | 2016-02-24 | 2016-04-20 | 益阳新华美机电科技有限公司 | Hydraulic variable-flow device with two parallel pumps and rubber mixing mill roller driving system |
-
2016
- 2016-02-24 CN CN201620137274.XU patent/CN205401271U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508320A (en) * | 2016-02-24 | 2016-04-20 | 益阳新华美机电科技有限公司 | Hydraulic variable-flow device with two parallel pumps and rubber mixing mill roller driving system |
| CN105508320B (en) * | 2016-02-24 | 2017-06-16 | 益阳新华美机电科技有限公司 | Two parallel pumps hydraulic pressure converter plant and rubber mixing machine drum driven system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160727 Effective date of abandoning: 20170616 |