CN202646665U - Control system for hydraulic coupler - Google Patents
Control system for hydraulic coupler Download PDFInfo
- Publication number
- CN202646665U CN202646665U CN 201220233026 CN201220233026U CN202646665U CN 202646665 U CN202646665 U CN 202646665U CN 201220233026 CN201220233026 CN 201220233026 CN 201220233026 U CN201220233026 U CN 201220233026U CN 202646665 U CN202646665 U CN 202646665U
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- fluid coupling
- control system
- controller
- hydraulic coupler
- servo
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Abstract
The utility model discloses a control system for a hydraulic coupler. The control system comprises the hydraulic coupler, a servo oil cylinder, a three-position four-way electromagnetic valve, a controller, a displacement sensor and a rotation speed sensor, wherein the hydraulic coupler, the servo oil cylinder, the three-position four-way electromagnetic valve and the controller are connected in sequence; furthermore, the displacement sensor is arranged inside the servo oil cylinder and is connected with the controller; and the rotation speed sensor is arranged on the hydraulic coupler and is connected with the controller. The control system for the hydraulic coupler provided by the utility model can be used for accurately controlling the rotation speed of the hydraulic coupler, so that the energy conversation effect of a working machine is improved; the problem of external leakage when a scoop tube moves can be thoroughly solved; and furthermore, the control system has the advantages of simple structure and low cost.
Description
Technical field
The utility model relates to hydraudynamic drive equipment, more specifically, is a kind of fluid coupling control system.
Background technique
Fluid coupling is a kind of widely used hydraulic transmission component.Variable speed fluid coupling moves to change the oil-filled amount of working solution in the active chamber usually by scoop tube, thereby the realization hydraulic coupler-speed regulation.Existing variable speed fluid coupling mostly adopts electric actuator to drive scoop tube and moves, and also has a small amount of employing electro-hydraulic actuator to drive scoop tube and moves.
Because existing final controlling element is only controlled the rotating speed of fluid coupling by the displacement of control scoop tube, and does not have directly to control the rotating speed of fluid coupling, so can not accurately control rotating speed.According to statistics, the rotating speed deviation of this control mode can reach more than 10%, thereby has affected energy-conservation effect.
The scoop tube of existing fluid coupling generally all is to be connected with actuator after stretching out hydraulic coupler body again.This Placement must install seal arrangement additional, prevents that working oil from leaking.This has increased the moving resistance of scoop tube, sometimes even can cause scoop tube stuck, causes rotating speed control malfunctioning.
Adopt the fluid coupling of electro-hydraulic actuator generally all to carry independently hydraulic system, be used for the fuel feeding of electro-hydraulic actuator.
The model utility content
The purpose of this utility model is to solve existing the problems referred to above in the existing fluid coupling control, thereby a kind of novel fluid coupling control system is provided.
Fluid coupling control system of the present utility model, comprise fluid coupling, servo-cylinder, three position four-way electromagnetic valve, controller, displacement transducer and speed probe, wherein, this fluid coupling, this servo-cylinder, this three position four-way electromagnetic valve and this controller connect in turn, and this displacement transducer is arranged in this servo-cylinder, and is connected with this controller, this speed probe is arranged on this fluid coupling, and is connected with this controller.
Preferably, described displacement transducer is built-in displacement sensor.
Preferably, described speed probe is encoder.
Fluid coupling control system of the present utility model can be implemented accurately control to the rotating speed of fluid coupling, improves the energy-saving effect of work mechanism, the external leakage problem when thoroughly solving scoop tube and moving, and simple in structure, with low cost.
Description of drawings
Fig. 1 is the composition frame chart of fluid coupling control system of the present utility model;
Fig. 2 is the structural representation of fluid coupling control system of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, composition and the working principle of fluid coupling control system of the present utility model is elaborated.
As shown in Figure 1, be the composition frame chart of fluid coupling control system of the present utility model, as shown in Figure 2, be the structural representation of fluid coupling control system of the present utility model.In conjunction with Fig. 1,2, fluid coupling control system of the present utility model, comprise fluid coupling 10, servo-cylinder 20, three position four-way electromagnetic valve 30, controller 40, displacement transducer 50 and speed probe 60, wherein, fluid coupling 10, servo-cylinder 20, three position four-way electromagnetic valve 30 are connected with controller in turn and are connected, and, displacement transducer 50 is arranged in the servo-cylinder 20, and be connected with controller 40, speed probe 60 is arranged on the fluid coupling 10, and is connected with controller 40.
In the present embodiment, displacement transducer 50 is built-in displacement sensor.As shown in Figure 2, displacement transducer 50 is arranged in the servo-cylinder 20, and when the piston rod movement of servo-cylinder 20, the scoop tube that is connected with piston rod is thereupon motion also, this moment, displacement transducer 50 just can detect the displacement of servo-cylinder, and then the signal that detects is transferred to controller 40.
And in conjunction with Fig. 2, in the present embodiment, fluid coupling 10 also comprises gear 12 and axle band oil pump 13.Speed probe 60 is encoder.Speed probe 60 is for detection of the output speed of fluid coupling 10, and the signal that detects transferred in the controller 40 processes.
In addition, in the present embodiment, fluid coupling 10 adopts conventional coupler configuration, when system is in running order, oil enters in the servo-cylinder 20 by three position four-way electromagnetic valve 30 from axle band oil pump 13, then the piston setting in motion in the servo-cylinder 20, at this moment, displacement transducer 50 and speed probe 60 are transported to controller 40 with the testing signal that obtains respectively, controller is controlled three position four-way electromagnetic valve 30 according to these signals, thereby the output speed that guarantees fluid coupling is in the required numerical value.
In conjunction with Fig. 2, the servo-cylinder 20 that adopts in the utility model directly links to each other with the body of fluid coupling 10, and make the center line of servo-cylinder 20 consistent with the center line of scoop tube 11, simple and compact for structure.This greatly reduces the resistance to motion of scoop tube 11, and does not have external leakage.And in the utility model, servo-cylinder 20 directly adopts the working oil of fluid coupling 10 itself, and additional hydraulic system is not set.This is unexistent in the domestic and international existing coupler control system.In the utility model, three position four-way electromagnetic valve 30 adopts conventional solenoid directional control valve, thereby realizes the speed closed loop control of fluid coupling 10, and does not adopt electrohydraulic control or Proportional valve in the conventional electrohydraulic control system.
By setting of the present utility model, can construct two circuit fluid coupling control system.As shown in Figure 1, servo-cylinder 20, three-position four-way valve 30, controller 40 and displacement transducer 50 consist of the first loop, i.e. scoop tube displacement loop; Fluid coupling 10, servo-cylinder 20, three position four-way electromagnetic valve 30 controllers 40 and speed probe 60 consist of second servo loop, i.e. rotation speed control loop.In this two circuit control system, output speed is controlled parameter, and control system is directly controlled the output speed of fluid coupling by controller.
Fluid coupling control system of the present utility model has three kinds of control modes of fluid coupling output speed, in conjunction with Fig. 1,2, specifically describes as follows:
The first control mode is to adopt the output speed of scoop tube displacement control loop control coupler.When the output speed of fluid coupling 10 and setting value were inconsistent, controller 40 will be exported a signal to three position four-way electromagnetic valve 30, made servo-cylinder 20 drive scoop tube 11 and moved by assigned direction.Scoop tube 11 has changed the oil-filled amount in fluid coupling 10 chambeies when moving, thereby changes the output speed of fluid coupling 10.When the displacement that detects servo-cylinder 20 when displacement transducer 50 reached the displacement of setting, scoop tube 11 stop motions remained on corresponding position, and output speed also remains on corresponding rotating speed.
The second control mode is to adopt the rotation speed control loop of fluid coupling 10 directly to control output speed.Under this control mode, when the output speed (by speed probe 60 direct-detections) of fluid coupling 10 is inconsistent with setting value, controller 40 will be exported a signal to three position four-way electromagnetic valve 30, makes servo-cylinder 20 drive scoop tube 11 and moves by assigned direction.Along with the movement of scoop tube 11, the oil-filled amount in fluid coupling 10 chambeies changes thereupon, thereby changes the output speed of fluid coupling.When the rotating speed of fluid coupling reached setting value, scoop tube 11 stop motions remained on corresponding position, and output speed also remains on corresponding rotating speed.
The third control mode is to adopt rotation speed control loop as major loop, and scoop tube displacement control loop is as the rotating speed of secondary circuit control coupler.The direct closed loop control that this not only can realize the coupler rotating speed can also improve the quality of revolution speed control system, improves control accuracy.
In sum, fluid coupling control system of the present utility model, can implement accurately control to the rotating speed of fluid coupling, improve the energy-saving effect of work mechanism (for example Pumps ﹠ Fans), external leakage problem when thoroughly the solution scoop tube moves, and control system of the present utility model is simple in structure, with low cost, has good promotional value.
Claims (3)
1. fluid coupling control system, it is characterized in that, comprise fluid coupling, servo-cylinder, three position four-way electromagnetic valve, controller, displacement transducer and speed probe, wherein, this fluid coupling, this servo-cylinder, this three position four-way electromagnetic valve and this controller connect in turn, and, this displacement transducer is arranged in this servo-cylinder, and be connected with this controller, this speed probe is arranged on this fluid coupling, and is connected with this controller.
2. fluid coupling control system according to claim 1 is characterized in that, described displacement transducer is built-in displacement sensor.
3. fluid coupling control system according to claim 1 is characterized in that, described speed probe is encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233026 CN202646665U (en) | 2012-05-22 | 2012-05-22 | Control system for hydraulic coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233026 CN202646665U (en) | 2012-05-22 | 2012-05-22 | Control system for hydraulic coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646665U true CN202646665U (en) | 2013-01-02 |
Family
ID=47415774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220233026 Expired - Lifetime CN202646665U (en) | 2012-05-22 | 2012-05-22 | Control system for hydraulic coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979327A (en) * | 2017-05-18 | 2017-07-25 | 山东济钢合金材料科技有限公司 | A kind of many gear speed governing of fluid coupling and equipment safety operation control system and its implementation |
| CN108716462A (en) * | 2018-04-13 | 2018-10-30 | 广东核电合营有限公司 | A kind of speed holding meanss and system for nuclear power feed pump group |
| CN109630647A (en) * | 2018-12-27 | 2019-04-16 | 沈阳鼓风机集团自动控制系统工程有限公司 | A kind of fluid-flywheel clutch safety interlock protector |
-
2012
- 2012-05-22 CN CN 201220233026 patent/CN202646665U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979327A (en) * | 2017-05-18 | 2017-07-25 | 山东济钢合金材料科技有限公司 | A kind of many gear speed governing of fluid coupling and equipment safety operation control system and its implementation |
| CN108716462A (en) * | 2018-04-13 | 2018-10-30 | 广东核电合营有限公司 | A kind of speed holding meanss and system for nuclear power feed pump group |
| CN108716462B (en) * | 2018-04-13 | 2020-07-28 | 广东核电合营有限公司 | Speed maintaining device and system for nuclear power water feed pump set |
| CN109630647A (en) * | 2018-12-27 | 2019-04-16 | 沈阳鼓风机集团自动控制系统工程有限公司 | A kind of fluid-flywheel clutch safety interlock protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |