CN201027637Y - Flux-sensitive control valve system used for load-sensitive hydraulic pump - Google Patents
Flux-sensitive control valve system used for load-sensitive hydraulic pump Download PDFInfo
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- CN201027637Y CN201027637Y CNU2007201079938U CN200720107993U CN201027637Y CN 201027637 Y CN201027637 Y CN 201027637Y CN U2007201079938 U CNU2007201079938 U CN U2007201079938U CN 200720107993 U CN200720107993 U CN 200720107993U CN 201027637 Y CN201027637 Y CN 201027637Y
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- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 17
- 230000008676 import Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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Abstract
The utility model discloses a flow rate sensitive control valve system for load sensitive hydraulic pump, comprising a flow rate sensitive signal acquisition sensing main valve system, a flow rate sensitive signal acquisition sensing pilot valve system and a flow rate sensitive signal sensing control system. Based on the detection feedback function inside a pilot type control valve and the overall liquid resistance network configuration inside a valve bank, etc., the utility model ensures that the characteristics of a load sensitive variable displacement pump meet the requirements of engineering system better; moreover, the utility model can increase the steady state control precision and the dynamic response speed in controlling a load sensitive pump; meanwhile, the utility model can improve the flow rate adaptability of the control system through designing a series of parameters of a valve port. With the closed loop detection feedback inside the controller of the utility model and the appropriate liquid resistance network configuration inside a detection and control system which are combined with the inserting technology, the utility model can increase control performance and system stability, thereby obtaining excellent performance, a compact structure, ideal versatility and wide adaptation range of flow rate.
Description
Technical field
The utility model relates to the electrichydraulic control variable pump systems that the hydraulic control system load-sensitive is controlled to be feature, especially relates to a kind of load-sensitive oil hydraulic pump flow-sensitive control valve system.
Background technique
Energy-conservation always is one of the emphasis of hydraulics research, and the load-sensitive variable displacement pump can be hydraulic system the most effectively energy-saving effect is provided.What this was wherein of greatest concern is the performance of control gear, and it not only is related to energy-saving effect, more is related to stability, stable state accuracy and the dynamic responding speed of pump source system.General control gear adopts traditional throttling controller spare and sensing means more, usually can not take into account at aspects such as stability, precision, rapidities.
Summary of the invention
The purpose of this utility model is to provide a kind of load-sensitive oil hydraulic pump flow-sensitive control valve system, and its control stability, stable state accuracy and dynamic response rapidity are improved.
In order to achieve the above object, the technical solution adopted in the utility model is to comprise: the flow-sensitive signal obtains sensing main valve system, the flow-sensitive signal obtains sensing pilot valve system and flow-sensitive sensing control system; Wherein:
1) the flow-sensitive signal obtains sensing main valve system: comprise main valve body, main valve housing, main valve plug, main spring, feedback spring; Main valve housing is installed between main valve body and the guide's valve body convex shoulder; Main valve plug is contained in the main valve housing, and can move in main valve housing, and feedback spring is installed between guide's spool and the main valve plug, constitutes the feedback Detecting element of main valve displacement-force feedback; One end of main spring is contained in guide's valve body, and the other end of main spring is installed on the main valve plug;
2) the flow-sensitive signal obtains sensing pilot valve system: comprise guide's valve body, guide's valve pocket, guide's spool, proportion electro-magnet, proportion electro-magnet is installed on guide's valve body, and guide's valve body is installed in the side of main valve body near main valve plug;
3) flow-sensitive sensing control system: comprise main valve body, regulating spool, Regulation spring and two liquid resistances; Regulation spring is installed between main valve body first plug and the regulating spool; Regulating spool is installed between second plug and the Regulation spring, and spool can move in the valve opening in valve body;
Be divided into three the tunnel after the next flow of variable displacement pump enters the main valve import, the first via is through primary valve first cavity volume, flow direction outlet, for past load; The second tunnel process first flow, first liquid hinder guide's valve body; Third Road is through second runner, the 3rd runner to the four runners; Fluid from the resistance of first liquid is divided into three the tunnel, and the first via to outlet, the 6th, the 7th and the 8th runner, flows to the main valve outlet through the 5th runner, poppet port; The second the tunnel enters the inner chamber of electromagnet through the 9th runner and the tenth runner, Third Road, and resistance enters feedback spring, main spool spring place second cavity volume through second liquid; Be divided into two the tunnel after flowing to the 3rd cavity volume from the fluid of the 4th runner, the 3rd cavity volume communicates with the left end of regulating spool by the resistance of the 4th liquid; The left step of regulating spool or the fluid and 11 runners of the 3rd cavity volume are separated, this moment, the 11 runner communicated with the 4th cavity volume, it is communicated with 11 runners, this moment, the 4th cavity volume and eleven holes road separated, 11 runners communicate with 12 runners, and 12 runners lead to the Variable Control cylinder of variable displacement pump; The 4th cavity volume by the 13, the 14 runner and the 15 communicates with return opening; The fluid of main valve outlet is guided to 17 runners through 16 runners and the resistance of the 3rd liquid wherein, through the right-hand member spring chamber of 17 runners to regulating spool.
The valve port of described main valve plug is rectangle, triangle or trapezoidal.
The beneficial effect that the utlity model has is: based on the detection feedback function of pilot-operated type control valve inside, and the liquid of whole valve group inside resistance network configuration etc., make load-sensitive variable pump characteristics more adapt to the requirement of engineering system.It can improve the steady state controling precision and the dynamic responding speed of load sensitive pump control.Simultaneously, by the parameters in series of design valve port, strengthen the flow adaptability of control system.This device is characterised in that the closed loop of controller inside detects feedback, liquid resistance network configuration with suitable Detection ﹠ Controling internal system, and combine with the plug-in mounting technology, both can improve control performance, the stability of a system, be a kind of function admirable, compact structure, versatility is good, flow accommodation is big energy-saving control device.
Description of drawings
Fig. 1 is a structural principle schematic representation of the present utility model;
Fig. 2 is a sensitive signal transducer valve assembly sectional drawing;
Fig. 3 is a sensitive signal transducer valve bitmap area.
Among the figure: 1, main valve body, 2, runner, 3, the main valve import, 4, runner, 5, main valve housing, 6, primary valve, 7, main valve plug, 8, cavity volume, 9, feedback spring, 10, main spool spring, 11, the liquid resistance, 12, the liquid resistance, 13, runner, 14, poppet port, 15, runner, 16, outlet, 17, runner, 18, guide's valve pocket, 19, proportion electro-magnet, 20, guide's valve body, 21, guide's spool, 22, runner, 23, runner, 24, runner, 25, the main valve outlet, 26, cavity volume, 27, runner, 50, runner, 51, the liquid resistance, 52, the right-hand member spring chamber, 53, runner, 54, Regulation spring, 55, regulating spool, 56, valve pocket, 57, runner, 58, valve pocket, 59, the liquid resistance, 60, runner, 61, runner, 62, runner, 63, runner, 64, plug 65, valve opening, 66, left side step, 67, plug, 68, return opening.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises that the flow-sensitive signal obtains sensing main valve system, the flow-sensitive signal obtains sensing pilot valve system and flow-sensitive sensing control system; Wherein:
1) the flow-sensitive signal obtains sensing main valve system: comprise main valve body 1, main valve housing 5, main valve plug 7, main spring 10, feedback spring 9; Main valve housing 5 is installed between main valve body 1 and guide's valve body 20 convex shoulders; Main valve plug 7 is contained in the main valve housing 5, and can move in main valve housing 5, and feedback spring 9 is installed between guide's spool 21 and the main valve plug 7, constitutes the feedback Detecting element of main valve displacement-force feedback; One end of main spring 10 is contained in guide's valve body 20, and the other end of main spring 10 is installed on the main valve plug 21;
2) the flow-sensitive signal obtains sensing pilot valve system: comprise guide's valve body 20, guide's valve pocket 18, guide's spool 21, proportion electro-magnet 19, proportion electro-magnet 19 is installed on guide's valve body 20, and guide's valve body 20 is installed in the side of main valve body 1 near main valve plug 7;
3) flow-sensitive sensing control system: comprise main valve body 1, regulating spool 55, Regulation spring 54 and two liquid resistances 51,59; Regulation spring 54 is installed between main valve body 1 first plug 64 and the regulating spool 55; Regulating spool 55 is installed between second plug 67 and the Regulation spring 54, and spool 55 can move in the valve opening in the valve body 1 65;
Be divided into three the tunnel after the next flow of variable displacement pump enters main valve import 3, the first via is through primary valve 6 first cavity volumes 8, flow direction outlet 25, for past load; The second the tunnel hinders 11 through first flow 4, first liquid arrives guide's valve body 20; Third Road is through second runner 2, the 3rd runner 27 to the 4th runners 60; Fluid from first liquid resistance 11 is divided into three the tunnel, and the first via to outlet the 16, the 6th, the 7th and the 8th runner 23,22,24, flows to main valve outlet 25 through the 5th runner 13, poppet port 14; The second the tunnel enters the inner chamber of electromagnet 19 through the 9th runner and the tenth runner 15,17, and Third Road enters feedback spring 9, main spool spring 10 places second cavity volume 26 through second liquid resistance 12; Be divided into two the tunnel after flowing to the 3rd cavity volume 58 from the fluid of the 4th runner 60, the 3rd cavity volume 58 communicates with the left end of regulating spool 55 by the 4th liquid resistance 59; The left step 66 of the regulating spool 55 or fluid and 11 runners 57 of the 3rd cavity volume 58 are separated, this moment, the 11 runner 57 communicated with the 4th cavity volume 56, it is communicated with 11 runners 57, this moment the 4th, cavity volume 56 separated with eleven holes road 57,11 runners 57 communicate with 12 runners 69, and 12 runners 69 lead to the Variable Control cylinder of variable displacement pump; The 4th cavity volume 56 by the 13, the 14 runner and the 15,62,61 communicates with return opening 68; The fluid of main valve outlet 25 is guided to 17 runners 53 through 16 runners 50 and the resistance of the 3rd liquid wherein 51, through the right-hand member spring chamber 52 of 17 runners 53 to regulating spool 55.
The valve port of described main valve plug 7 is rectangle, triangle or trapezoidal.
Working principle of the present utility model is as follows:
The flow-sensitive signal obtains sensing main valve system (as shown in Figure 1): comprise main valve body 1, main valve housing 5, main valve plug 7, main spring 10, feedback spring 9 etc.Main valve housing 5 is installed in main valve body 1 and guide's valve body 20 is inserted between the interior convex shoulder of main valve body opening; Main valve plug can move in main valve housing, and feedback spring 9 is installed between guide's spool 21 and the main valve plug 7, and it is the feedback Detecting element of main valve displacement-force feedback.One end of main spring 10 is contained in guide's valve body, and the other end is installed on the main valve plug 21.
In the running of the input force lower device of proportion electro-magnet 19: main valve plug 7 moves to left, and primary valve 6 is opened, and whole flows of variable displacement pump are through primary valves 6, flows to outlet 25 for toward load, and the valve port 6 of main valve plug can be rectangle, triangle and fall trapezoidal etc.When fluid flow through primary valve 6, main valve plug 7 moved to left, act on guide's spool 21 by feedback spring 9, with the input force rate of electromagnet 19, the working position of decision guide spool 21.
The flow-sensitive signal obtains sensing pilot valve system (as shown in Figure 1): comprise guide's valve body 20, guide's valve pocket 18, guide's spool 21, proportion electro-magnet 19 etc.Proportion electro-magnet 19 is installed on guide's valve body 20, and guide's valve body 20 is installed on the main valve body.After the proportion electro-magnet energising, the push rod 28 that electromagnetic force passing ratio electromagnet 19 stretches out promotes guide's spool 21 and moves right, and opens poppet port 14, and main valve hinders 11 from the pilot flow of import 3 through runner 4, liquid, enters runner 13.The first via enters the inner chamber of electromagnet 19 through runner 15,17.The second the tunnel, enter spring 9,10 place cavity volumes 26 through liquid resistance 12.Third Road is through poppet port 14, and outlet 16,21, runner 23,22,24 flow to outlet 25.The input power of electromagnet 19, with feedback spring 9 force balance that main valve plug 7 moves to left and causes, the working position of decision guide spool 21.
Flow-sensitive sensing control system (as Fig. 1, Fig. 2, shown in Figure 3): comprise that main valve body 1, spool 55, spring 54, liquid hinder 51,59 etc.Spring 54 is installed between plug 64 and the spool 55; Spool 55 is installed between plug 67 and the spring 54, and spool 55 can move in the valve opening in the valve body 1 65.The fluid of main valve import 3 is waited until runner 60 through valve inner runner 2,27, enters valve pocket 58, guides to the left end of spool 55 through liquid resistance 59.The left step 66 of the spool 55 or fluid of valve pocket 58 separated (this moment, runner 57 communicated with valve pocket 56) with runner 57 perhaps makes it communicate with runner 57 (valve pocket 56 and duct 57 separate at this moment).Runner 57,69 leads to the Variable Control cylinder of variable displacement pump.Valve pocket 56 communicates with return opening 68 by runner 63,62,61.The fluid of Variable Control main valve outlet 25 is guided to runner 53 through inner flow passage 50 and the resistance of liquid wherein 51, through the right-hand member spring chamber 52 of runner 53 to spool 55.The hydraulic coupling that acts on spool 55 right-hand members adds the power of upper spring 54, with the fluid pressure balance that acts on spool 55 left sides from runner 60, and the working position of decision spool 55.
Claims (2)
1. a load-sensitive oil hydraulic pump flow-sensitive control valve system is characterized in that: comprise that the flow-sensitive signal obtains sensing main valve system, the flow-sensitive signal obtains sensing pilot valve system and flow-sensitive sensing control system; Wherein:
1) the flow-sensitive signal obtains sensing main valve system: comprise main valve body (1), main valve housing (5), main valve plug (7), main spring (10), feedback spring (9); Main valve housing (5) is installed between main valve body (1) and guide's valve body (20) convex shoulder; Main valve plug (7) is contained in the main valve housing (5), and can move in main valve housing (5), and feedback spring (9) is installed between guide's spool (21) and the main valve plug (7), constitutes the feedback Detecting element of main valve displacement one force feedback; One end of main spring (10) is contained in guide's valve body (20), and the other end of main spring (10) is installed on the main valve plug (21);
2) the flow-sensitive signal obtains sensing pilot valve system: comprise guide's valve body (20), guide's valve pocket (18), guide's spool (21), proportion electro-magnet (19), proportion electro-magnet (19) is installed on guide's valve body (20), and guide's valve body (20) is installed in the side of main valve body (1) near main valve plug (7);
3) flow-sensitive sensing control system: comprise main valve body (1), regulating spool (55), Regulation spring (54) and two liquid resistances (51,59); Regulation spring (54) is installed between main valve body (1) first plug (64) and the regulating spool (55); Regulating spool (55) is installed between second plug (67) and the Regulation spring (54), and spool (55) can move in the valve opening (65) in the valve body (1);
Be divided into three the tunnel after the next flow of variable displacement pump enters main valve import (3), the first via is through primary valve (6) first cavity volumes (8), flow direction outlet (25), for past load; The second the tunnel hinders (11) through first flow (4), first liquid arrives guide's valve body (20); Third Road through second runner (2), the 3rd runner (27) to the 4th runner (60); Fluid from first liquid resistance (11) is divided into three the tunnel, and the first via to outlet (16), the 6th, the 7th and the 8th runner (23,22,24), flows to main valve outlet (25) through the 5th runner (13), poppet port (14); The second the tunnel enters the inner chamber of electromagnet (19) through the 9th runner and the tenth runner (15,17), and Third Road enters feedback spring (9), main spool spring (10) place second cavity volume (26) through second liquid resistance (12); Be divided into two the tunnel after flowing to the 3rd cavity volume (58) from the fluid of the 4th runner (60), the 3rd cavity volume (58) communicates with the left end of regulating spool (55) by the 4th liquid resistance (59); The left step (66) of regulating spool (55) or the fluid and 11 runners (57) of the 3rd cavity volume (58) are separated, the 11 runner this moment (57) communicates with the 4th cavity volume (56), it is communicated with 11 runners (57), the 4th cavity volume this moment (56) separates with eleven holes road (57), 11 runners (57) communicate with 12 runners (69), and 12 runners (69) lead to the Variable Control cylinder of variable displacement pump; The 4th cavity volume (56) by the 13, the 14 runner and the 15 (63,62,61) communicates with return opening (68); The fluid of main valve outlet (25) is guided to 17 runners (53) through 16 runners (50) and the resistance of the 3rd liquid wherein (51), through the right-hand member spring chamber (52) of 17 runners (53) to regulating spool (55).
2. a kind of load-sensitive oil hydraulic pump flow-sensitive control valve system according to claim 1 is characterized in that: the valve port of described main valve plug (7) is rectangle, triangle or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201079938U CN201027637Y (en) | 2007-04-10 | 2007-04-10 | Flux-sensitive control valve system used for load-sensitive hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201079938U CN201027637Y (en) | 2007-04-10 | 2007-04-10 | Flux-sensitive control valve system used for load-sensitive hydraulic pump |
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| CN201027637Y true CN201027637Y (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007201079938U Expired - Lifetime CN201027637Y (en) | 2007-04-10 | 2007-04-10 | Flux-sensitive control valve system used for load-sensitive hydraulic pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153419A (en) * | 2014-07-22 | 2014-11-19 | 广西柳工机械股份有限公司 | Power control valve and loader quantitative-variable hydraulic system |
| CN106593837A (en) * | 2017-02-10 | 2017-04-26 | 江苏恒立液压科技有限公司 | Variable control structure for hydraulic plunger pump and control method of variable control structure |
| CN108895954A (en) * | 2018-04-03 | 2018-11-27 | 浙江大学 | A kind of spool displacement of no sensor is from cognitive method |
| CN111561601A (en) * | 2020-05-08 | 2020-08-21 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
-
2007
- 2007-04-10 CN CNU2007201079938U patent/CN201027637Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153419A (en) * | 2014-07-22 | 2014-11-19 | 广西柳工机械股份有限公司 | Power control valve and loader quantitative-variable hydraulic system |
| CN106593837A (en) * | 2017-02-10 | 2017-04-26 | 江苏恒立液压科技有限公司 | Variable control structure for hydraulic plunger pump and control method of variable control structure |
| CN108895954A (en) * | 2018-04-03 | 2018-11-27 | 浙江大学 | A kind of spool displacement of no sensor is from cognitive method |
| CN111561601A (en) * | 2020-05-08 | 2020-08-21 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
| CN111561601B (en) * | 2020-05-08 | 2022-04-01 | 西安普特流体控制有限公司 | Safety valve safety increasing control device and state monitoring and evaluation method |
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Granted publication date: 20080227 |