CN104196801A - Speed-regulating feedback control valve of hydraulic motor - Google Patents
Speed-regulating feedback control valve of hydraulic motor Download PDFInfo
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- CN104196801A CN104196801A CN201410451065.8A CN201410451065A CN104196801A CN 104196801 A CN104196801 A CN 104196801A CN 201410451065 A CN201410451065 A CN 201410451065A CN 104196801 A CN104196801 A CN 104196801A
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- hydraulic motor
- valve
- filler opening
- control valve
- oil hydraulic
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Abstract
The invention aims at providing a speed-regulating feedback control valve of a hydraulic motor. When the hydraulic motor keeps working at a certain rotating speed, a system of an executing assembly driven by the hydraulic motor can be made to protect the hydraulic motor when the executing assembly is overloaded. The speed-regulating feedback control valve of the hydraulic motor comprises an oil inlet, an oil returning port and at least one hydraulic motor connector, all of which are formed in a valve body, and further comprises a flow control loop and a load feedback loop. The flow control loop comprises an electromagnetic valve, a pressure compensator and a flow control valve, all of which are connected in sequence through a first oil way from the oil inlet. The load feedback loop comprises a logic element and a one-way valve both of which are connected in sequence. The logic element is connected with the hydraulic motor connector through the one-way valve. The speed-regulating feedback control valve can control the system of the executing assembly driven by the hydraulic motor, and has the advantages of being wide in application range, reliable in work, high in anti-pollution capacity, convenient to control and the like.
Description
Technical field
The present invention relates to hydraulic motor control valve field, be specifically related to a kind of oil hydraulic motor speed governing feedback control valve.
Background technique
The executive module that the oil hydraulic motor of take is power generally comprises: oil hydraulic motor, hydraulic motor control valve, executive module three parts.The executive module that the oil hydraulic motor of take is power, has higher requirement to hydraulic control oil circuit, and executive module needs to guarantee the rotating speed of oil hydraulic motor in the course of the work on the one hand, can not change along with load variations; Executive module off-load in time protect oil hydraulic motor when there is overload on the other hand; Hydraulic motor control valve working condition directly affects operation quality and the working efficiency of whole executive module.
The executive module that the oil hydraulic motor of take in prior art is power is to make oil hydraulic motor have different speed by control valve mostly, rotation speed change when these control valves are easy to make oil hydraulic motor hand to load, and load is crossed ambassador's motor and is damaged.
Summary of the invention
The object of this invention is to provide a kind of oil hydraulic motor speed governing feedback control valve; when guaranteeing that oil hydraulic motor keeps certain rotary speed working, can make oil hydraulic motor drive the system of executive module can protect oil hydraulic motor when running into executive module generation overload situations.
For this reason, the present invention adopts following technological scheme: a kind of oil hydraulic motor speed governing feedback control valve, comprise filler opening, return opening, at least one oil hydraulic motor connection mouth of being arranged on valve body, and also comprise flow control circuit, load feedback loop; Described flow control control loop comprises solenoid valve, pressure compensator, the flow control valve being connected successively by described filler opening, and the filler opening of described flow control valve is connected with the first pressure feedback mouth with the oil outlet of pressure compensator respectively with oil outlet; Described load feedback loop comprises logic component and the one-way valve connecting successively, the oil outlet of described logic component is connected with return opening, the first pressure feedback mouth of described logic component is connected with oil hydraulic motor connection mouth by one-way valve, the second pressure feedback mouth of described logic component is connected with the filler opening of logic component, and the filler opening of described logic component is connected with filler opening.
Further, described solenoid valve is 2/2-way solenoid valve, and described one-way valve is the first one-way valve.
Further, the filler opening of described 2/2-way solenoid valve is connected with filler opening, and the oil outlet of described 2/2-way solenoid valve is connected with the filler opening of described pressure compensator; The filler opening of described the first one-way valve is connected with oil hydraulic motor connection mouth, and the oil outlet of described the first one-way valve is connected with the first pressure feedback mouth of logic component.
Further, described solenoid valve is two-bit triplet solenoid valve, and described one-way valve is two parallel connections, is respectively the second one-way valve, the 3rd one-way valve.
Further, the filler opening of described two-bit triplet solenoid valve is connected with the oil outlet of described flow control valve, and the first oil outlet of described two-bit triplet solenoid valve, the second oil outlet are connected with the filler opening of the second one-way valve, the filler opening of the 3rd one-way valve respectively.
Further, also comprise relief valve, the filler opening of described relief valve is connected with the oil outlet of one-way valve, and the oil outlet of described relief valve is connected with return opening.
Further, the first pressure feedback mouth of described logic component and the first pressure feedback mouth of pressure compensator are in series with respectively the first damping port and the second damping port.
Further, described logic component is Fixed differential reducing valve.
Further, this oil hydraulic motor speed governing feedback control valve adopts the integrated mode of thread cartridge.
The present invention has the following advantages:
1, can drive the system of executive module to control to oil hydraulic motor, there is applied widely, reliable operation, contamination resistance is strong and control the features such as convenient.
2, this oil hydraulic motor speed governing feedback control valve has load sensing and flow control function, makes oil hydraulic motor work more stable, can allocate energy supply, thereby realize energy efficient, has improved the mechanical property that drives executive module system with oil hydraulic motor.
3, this oil hydraulic motor speed governing feedback control valve adopts the integrated mode of plug-in mounting to realize oil circuit control, and convenient for installation and maintenance, leak less, vibrate little, reliable operation, be beneficial to the advantages such as integrated and standardization that realize typical hydraulic system, for drive the system of executive module to control with oil hydraulic motor, provide a great convenience.
Accompanying drawing explanation
Fig. 1 is the first embodiment's schematic diagram of the present invention;
Fig. 2 is the second embodiment schematic diagram of the present invention;
Fig. 3 is that the first embodiment is applied to oil hydraulic motor speed governing feedback schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of oil hydraulic motor speed governing feedback control valve, comprises oil inlet P, oil return inlet T, at least one oil hydraulic motor connection mouth A of being arranged on valve body 1, also comprises flow control circuit, load feedback loop; Flow control control loop comprises 2/2-way solenoid valve G, pressure compensator F, the flow control valve E being connected successively by oil inlet P; Pressure compensator F comprises the first pressure feedback mouth F1, the second pressure feedback mouth F2, filler opening F3, oil outlet F4; Flow control valve E comprises filler opening E1, oil outlet E2; The filler opening E1 of flow control valve E is connected with the first pressure feedback mouth F1 with the oil outlet F4 of pressure compensator F respectively with oil outlet E2; Load feedback loop comprises logic component C and the first one-way valve J connecting successively, logic component C comprises the first pressure feedback mouth C1, the second pressure feedback mouth C2, filler opening C3, oil outlet C4, the oil outlet C4 of logic component C is connected with oil return inlet T, the first pressure feedback mouth C1 of logic component C is connected with oil hydraulic motor connection mouth A by the first one-way valve J, the second pressure feedback mouth C2 of logic component C is connected with the filler opening C3 of logic component C, and the filler opening C3 of logic component C is connected with oil inlet P; 2/2-way solenoid valve G comprises filler opening G1, oil outlet G2, and the filler opening G1 of 2/2-way solenoid valve G is connected with oil inlet P, and the oil outlet G2 of 2/2-way solenoid valve G is connected with the filler opening F3 of pressure compensator F; The filler opening J1 of the first one-way valve J is connected with oil hydraulic motor connection mouth A, and the oil outlet J2 of the first one-way valve J is connected with the first pressure feedback mouth C1 of logic component C.
Be illustrated in figure 2 the second embodiment of the present invention, the solenoid valve that different from first embodiment is in flow control circuit is two-position three way magnetic valve L, and two one-way valves in parallel are respectively the second one-way valve I, the 3rd one-way valve K; The filler opening L1 of two-bit triplet solenoid valve L is connected with the oil outlet E2 of flow control valve E, and the first oil outlet L2 of two-bit triplet solenoid valve L, the second oil outlet L3 are connected with the filler opening I1 of the second one-way valve I, the filler opening K1 of the 3rd one-way valve K respectively.
The above-mentioned two kinds of embodiments of the present invention all also comprise relief valve D, and the filler opening D1 of relief valve D is connected with the oil outlet of one-way valve, and the oil outlet D2 of relief valve D is connected with oil return inlet T, when normality, closes, and during overload, opens, and has safety protection function; At the first pressure feedback mouth C1 of logic component C and the first pressure feedback mouth F1 of pressure compensator F, be in series with respectively the first damping port H and the second damping port N, in order to slow down the impact of oil liquid pressure to the spool of pressure compensation F and logic component C, and prevent that its spring chamber fluid from blocking.
As shown in Figure 3, the Maximum operating pressure designing when speed governing feedback control circuit is 25Mpa, and rated flow is 40L/Min; Pressure compensator F maintains the inlet outlet pressure differential of flow control valve E within the scope of 1.5Mpa, to keep flow control valve E output flow not affect with load variations.The induced pressure at oil hydraulic motor connection mouth A place feeds back to oil inlet P place through the first one-way valve J and logic component C, and the working pressure that makes oil hydraulic pump S changes with the variation of induced pressure, has load-transducing function, has reduced the power consumption of system.
In oil hydraulic motor speed governing feedback control circuit, two two three-way electromagnetic valve G are when off-position, on the effect lower valve core of the second pressure feedback mouth C2 of logic component C, move, the fluid in valve body 1 flows into oil return inlet T by oil inlet P completely, and oil hydraulic motor connection mouth A flows out without fluid, when two two three-way electromagnetic valve G energisings, its right position connecting system, the pressure oil now being entered by oil inlet P is through flow control valve E and pressure compensator F, and a part is through oil hydraulic motor connection mouth A for load output, and another part is used for feedback load pressure through the first one-way valve J, if it is large that load becomes, induced pressure raises, the cracking pressure that has surpassed the first one-way valve J, the first one-way valve J opens, pressure oil arrives the first pressure feedback mouth C1 of logic component C through the first one-way valve J, logic component C spool is moved down, the fluid that is flowed into oil return inlet T by oil inlet P reduces, the fluid that flows to 2/2-way solenoid valve G increases, thereby make the working pressure of oil hydraulic pump S along with induced pressure increases and increases, otherwise, if load reduces, the induced pressure at oil hydraulic motor connection mouth A place reduces, the working pressure of oil hydraulic pump S is along with induced pressure reduces and reduces, therefore there is the function of load sensing.When induced pressure is reduced to the cracking pressure that is less than the first one-way valve J, the working pressure of oil hydraulic pump S will no longer change.
When oil hydraulic motor connection mouth A place induced pressure increases, the pressure of the first pressure feedback mouth F1 of pressure compensator F and the oil outlet E2 of flow control valve E increases, pressure compensator F spool is moved to left, the filler opening F3 of pressure compensator F and the deattenuation between oil outlet F4, pressure drop also reduces, thereby the oil outlet F4 place pressure of pressure compensator F increases, the pressure that is the filler opening E1 of flow control valve E increases, and then make the filler opening E1 of flow control valve E, it is certain that oil outlet E2 pressure difference keeps, the oil outlet E2 flow of flow control valve E also keeps stable, otherwise, if oil hydraulic motor connection mouth A place induced pressure reduces, the filler opening F3 of pressure compensator F and the pressure drop between oil outlet F4 increase, the filler opening E1 of flow control valve E and oil outlet E2 pressure all reduce, but it is certain that pressure reduction keeps, and then make the oil outlet E2 flow of flow control valve E still keep stable.No matter how oil hydraulic motor connection mouth A place induced pressure changes, the oil outlet E2 flow of flow control valve E all keeps stable, it is stable that the output speed of oil hydraulic motor M1 and M2 keeps, and then drive executive module R1 and R2 easy motion, and be not subject to the impact of executive module R1 and R2 load variations.Oil hydraulic pump S is connected with oil inlet P, when executive module R1 and R2 load variations, the working pressure of oil hydraulic pump S changes along with the variation of load, reduced the power consumption of system, oil hydraulic motor connection mouth A is connected with motor M1 filler opening M12, the oil outlet M11 of oil hydraulic motor M1 is connected with the filler opening M22 of oil hydraulic motor M2, the oil outlet M21 oil sump tank Q of oil hydraulic motor M2.
Above-described is only preferred embodiment of the present invention.Should be understood that for those of ordinary skills, under technology enlightenment provided by the present invention, as the common practise of related domain, can also make other equivalent modifications and improvement, also should be considered as protection scope of the present invention.
Claims (9)
1. an oil hydraulic motor speed governing feedback control valve, comprises filler opening, return opening, at least one oil hydraulic motor connection mouth of being arranged on valve body, it is characterized in that: also comprise flow control circuit, load feedback loop; Described flow control control loop comprises solenoid valve, pressure compensator (F), the flow control valve (E) being connected successively by described filler opening (P), and the filler opening of described flow control valve (E) is connected with the first pressure feedback mouth with the oil outlet of pressure compensator (F) respectively with oil outlet; Described load feedback loop comprises logic component (C) and the one-way valve connecting successively, the oil outlet of described logic component (C) is connected with return opening (T), the first pressure feedback mouth of described logic component (C) is connected with oil hydraulic motor connection mouth (A) by one-way valve, the second pressure feedback mouth of described logic component (C) is connected with the filler opening of logic component (C), and the filler opening of described logic component (C) is connected with filler opening (P).
2. a kind of oil hydraulic motor speed governing feedback control valve according to claim 1, is characterized in that: described solenoid valve is 2/2-way solenoid valve (G); Described one-way valve is the first one-way valve (J).
3. a kind of oil hydraulic motor speed governing feedback control valve according to claim 2, it is characterized in that: the filler opening of described 2/2-way solenoid valve (G) is connected with filler opening (P), the oil outlet of described 2/2-way solenoid valve (G) is connected with the filler opening of described pressure compensator (F); The filler opening of described the first one-way valve (J) is connected with oil hydraulic motor connection mouth (A), and the oil outlet of described the first one-way valve (J) is connected with the first pressure feedback mouth of logic component (C).
4. a kind of oil hydraulic motor speed governing feedback control valve according to claim 1, is characterized in that: described solenoid valve is two-bit triplet solenoid valve (L), and described one-way valve is two parallel connections, is respectively the second one-way valve (I), the 3rd one-way valve (K).
5. a kind of oil hydraulic motor speed governing feedback control valve according to claim 4, it is characterized in that: the filler opening of described two-bit triplet solenoid valve (L) is connected with the oil outlet of described flow control valve (E), the first oil outlet of described two-bit triplet solenoid valve (L), the second oil outlet are connected with the filler opening of the second one-way valve (I), the filler opening of the 3rd one-way valve (K) respectively.
6. according to a kind of oil hydraulic motor speed governing feedback control valve described in claim 2 or 4, it is characterized in that: also comprise relief valve (D), the filler opening of described relief valve (D) is connected with the oil outlet of one-way valve, and the oil outlet of described relief valve (D) is connected with return opening (T).
7. a kind of oil hydraulic motor speed governing feedback control valve according to claim 6, is characterized in that: the first pressure feedback mouth of described logic component (C) and the first pressure feedback mouth of pressure compensator (F) are in series with respectively the first damping port (H) and the second damping port (N).
8. a kind of oil hydraulic motor speed governing feedback control valve according to claim 7, is characterized in that: described logic component (C) is Fixed differential reducing valve.
9. according to a kind of oil hydraulic motor speed governing feedback control valve described in any one in claim 1 to 8, it is characterized in that: this oil hydraulic motor speed governing feedback control valve adopts the integrated mode of thread cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451065.8A CN104196801B (en) | 2014-09-05 | 2014-09-05 | Speed-regulating feedback control valve of hydraulic motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451065.8A CN104196801B (en) | 2014-09-05 | 2014-09-05 | Speed-regulating feedback control valve of hydraulic motor |
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| Publication Number | Publication Date |
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| CN104196801A true CN104196801A (en) | 2014-12-10 |
| CN104196801B CN104196801B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410451065.8A Active CN104196801B (en) | 2014-09-05 | 2014-09-05 | Speed-regulating feedback control valve of hydraulic motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087366A (en) * | 2018-01-25 | 2018-05-29 | 陈艳艳 | A kind of flow divider valve for single-pump system |
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| US4145958A (en) * | 1977-12-02 | 1979-03-27 | Borg-Warner Corporation | Fluid control system with automatically actuated motor port lock-out valves |
| EP0150308A2 (en) * | 1984-01-30 | 1985-08-07 | Trw Inc. | Apparatus for controlling fluid flow |
| CN102269190A (en) * | 2011-07-04 | 2011-12-07 | 长沙中联重工科技发展股份有限公司 | Hydraulic control loop |
| CN103277359A (en) * | 2013-06-05 | 2013-09-04 | 浙江大学 | Power output unit for hand-held hydraulic power accessories |
| CN103671323A (en) * | 2013-12-05 | 2014-03-26 | 柳工无锡路面机械有限公司 | Open vibration valve with electric proportional control function and pressure compensation function and used for road roller |
| CN204041599U (en) * | 2014-09-05 | 2014-12-24 | 酒泉奥凯种子机械股份有限公司 | A kind of oil hydraulic motor speed governing feedback control valve |
-
2014
- 2014-09-05 CN CN201410451065.8A patent/CN104196801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4145958A (en) * | 1977-12-02 | 1979-03-27 | Borg-Warner Corporation | Fluid control system with automatically actuated motor port lock-out valves |
| EP0150308A2 (en) * | 1984-01-30 | 1985-08-07 | Trw Inc. | Apparatus for controlling fluid flow |
| CN102269190A (en) * | 2011-07-04 | 2011-12-07 | 长沙中联重工科技发展股份有限公司 | Hydraulic control loop |
| CN103277359A (en) * | 2013-06-05 | 2013-09-04 | 浙江大学 | Power output unit for hand-held hydraulic power accessories |
| CN103671323A (en) * | 2013-12-05 | 2014-03-26 | 柳工无锡路面机械有限公司 | Open vibration valve with electric proportional control function and pressure compensation function and used for road roller |
| CN204041599U (en) * | 2014-09-05 | 2014-12-24 | 酒泉奥凯种子机械股份有限公司 | A kind of oil hydraulic motor speed governing feedback control valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087366A (en) * | 2018-01-25 | 2018-05-29 | 陈艳艳 | A kind of flow divider valve for single-pump system |
| CN108087366B (en) * | 2018-01-25 | 2019-07-19 | 武汉嘉仕德机电设备有限公司 | A kind of flow divider valve for single-pump system |
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| CN104196801B (en) | 2017-02-15 |
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