CN204041599U - A kind of oil hydraulic motor speed governing feedback control valve - Google Patents
A kind of oil hydraulic motor speed governing feedback control valve Download PDFInfo
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- CN204041599U CN204041599U CN201420510756.6U CN201420510756U CN204041599U CN 204041599 U CN204041599 U CN 204041599U CN 201420510756 U CN201420510756 U CN 201420510756U CN 204041599 U CN204041599 U CN 204041599U
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Abstract
The purpose of this utility model is to provide a kind of oil hydraulic motor speed governing feedback control valve, while ensureing that oil hydraulic motor keeps certain rotary speed working, oil hydraulic motor can be enable to drive the system of executive module to protect oil hydraulic motor when running into executive module generation overload situations, it comprises the filler opening be arranged on valve body, return opening, at least one oil hydraulic motor connection mouth, also comprises flow control circuit, load feedback loop; Described flow control control loop comprises the solenoid valve, pressure compensator, the flow control valve that are connected successively by the first oil circuit by described filler opening; Described load feedback loop comprises the logic component and one-way valve that connect successively, described logic component is connected with oil hydraulic motor connection mouth by one-way valve, the utility model can drive the system of executive module to control to oil hydraulic motor, has applied widely, reliable operation, contamination resistance strong and control the features such as convenient.
Description
Technical field
The utility model relates to hydraulic motor control valve field, is specifically related to a kind of oil hydraulic motor speed governing feedback control valve.
Background technique
Be that the executive module of power generally comprises: oil hydraulic motor, hydraulic motor control valve, executive module three part with oil hydraulic motor.Take oil hydraulic motor as the executive module of power, have higher requirement to hydraulic control oil circuit, executive module needs the rotating speed ensureing oil hydraulic motor in the course of the work on the one hand, can not change along with load variations; On the other hand executive module can off-load in time protect oil hydraulic motor when there is overload; Hydraulic motor control valve working condition directly affects operation quality and the working efficiency of whole executive module.
Be the executive module of power with oil hydraulic motor in prior art be make oil hydraulic motor have different speed by control valve mostly, these control valves are easy to make oil hydraulic motor hand to rotation speed change during load, and load is crossed ambassador's motor and damaged.
Model utility content
The purpose of this utility model is to provide a kind of oil hydraulic motor speed governing feedback control valve; while ensureing that oil hydraulic motor keeps certain rotary speed working, oil hydraulic motor can be enable to drive the system of executive module to protect oil hydraulic motor when running into executive module generation overload situations.
For this reason, the utility model adopts following technological scheme: a kind of oil hydraulic motor speed governing feedback control valve, comprises the filler opening be arranged on valve body, return opening, at least one oil hydraulic motor connection mouth, also comprises flow control circuit, load feedback loop; Described flow control control loop comprises the solenoid valve, pressure compensator, the flow control valve that are connected successively by described filler opening, and the filler opening of described flow control valve and oil outlet are connected with the oil outlet of pressure compensator and the first pressure feedback mouth respectively; Described load feedback loop comprises the logic component and one-way valve that connect successively, the oil outlet of described logic component is connected with return opening, first pressure feedback mouth of described logic component is connected with oil hydraulic motor connection mouth by one-way valve, 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 first one-way valve is connected with oil hydraulic motor connection mouth, and the oil outlet of described 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, second oil outlet of described two-bit triplet solenoid valve 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 the first damping port and the second damping port respectively.
Further, described logic component is Fixed differential reducing valve.
Further, the mode that this oil hydraulic motor speed governing feedback control valve employing thread cartridge is integrated.
The utility model has the following advantages:
1, the system of executive module can be driven to control to oil hydraulic motor, there is applied widely, reliable operation, contamination resistance 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, thus realize energy efficient, improves the mechanical property driving 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, leaking less, vibrating little, reliable operation, being beneficial to advantages such as realizing the integrated of typical hydraulic system and standardization, for driving the Systematical control of executive module to provide a great convenience with oil hydraulic motor.
Accompanying drawing explanation
Fig. 1 is the first embodiment's schematic diagram of the utility model;
Fig. 2 is the utility model the second embodiment schematic diagram;
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 utility model is described in further detail.
As shown in Figure 1, a kind of oil hydraulic motor speed governing feedback control valve, comprises the oil inlet P be arranged on valve body 1, oil return inlet T, at least one oil hydraulic motor connection mouth A, also comprises flow control circuit, load feedback loop; Flow control control loop comprises the 2/2-way solenoid valve G, pressure compensator F, the flow control valve E that are 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 and oil outlet E2 are connected with the oil outlet F4 of pressure compensator F and the first pressure feedback mouth F1 respectively; Load feedback loop comprises the logic component C and the first one-way valve J that connect 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.
Being illustrated in figure 2 the utility model the second embodiment, is two-position three way magnetic valve L with first embodiment unlike the solenoid valve in flow control circuit, 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, the second oil outlet L3 of two-bit triplet solenoid valve L 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 utility model 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, closes, opens during overload, have safety protection function when normality; The first damping port H and the second damping port N is in series with respectively at the first pressure feedback mouth C1 of logic component C and the first pressure feedback mouth F1 of pressure compensator F, in order to slow down the impact of oil liquid pressure to the spool of pressure compensation F and logic component C, and prevent its spring chamber fluid from blocking.
As shown in Figure 3, when the Maximum operating pressure of speed governing feedback control circuit design is 25Mpa, rated flow is 40L/Min; The inlet outlet pressure differential of flow control valve E maintains within the scope of 1.5Mpa by pressure compensator F, does not affect to keep flow control valve E output flow 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, the working pressure of oil hydraulic pump S is changed with the change of induced pressure, has load-transducing function, reduce the power consumption of system.
In oil hydraulic motor speed governing feedback control circuit, when 2/2-way solenoid valve G is in off-position, the effect lower valve core of the second pressure feedback mouth C2 of logic component C moves, and 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 2/2-way solenoid valve G is energized, its right position connecting system, the pressure oil now entered by oil inlet P is through flow control valve E and pressure compensator F, and a part is used for load through oil hydraulic motor connection mouth A and exports, and another part is used for feedback load pressure through the first one-way valve J, if load becomes large, induced pressure raises, exceed the cracking pressure of the first one-way valve J, 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 being flowed into oil return inlet T by oil inlet P reduces, the fluid flowing to 2/2-way solenoid valve G increases, thus make the working pressure of oil hydraulic pump S increase along with induced pressure and increase, otherwise, if load reduces, the induced pressure at oil hydraulic motor connection mouth A place reduces, the working pressure of oil hydraulic pump S reduces along with induced pressure and reduces, therefore there is the function of load sensing.When induced pressure is reduced to the cracking pressure being 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 increase of the first pressure feedback mouth F1 of pressure compensator F and the oil outlet E2 of flow control valve E, pressure compensator F spool is moved to left, deattenuation between the filler opening F3 of pressure compensator F and oil outlet F4, pressure drop also reduces, thus the oil outlet F4 place pressure increase of pressure compensator F, the i.e. pressure increase of the filler opening E1 of flow control valve E, and then make the filler opening E1 of flow control valve E, oil outlet E2 pressure difference keeps certain, 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, pressure drop between the filler opening F3 of pressure compensator F and oil outlet F4 increases, filler opening E1 and the oil outlet E2 pressure of flow control valve E all reduce, but pressure reduction keeps certain, 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, the output speed of oil hydraulic motor M1 and M2 keeps stable, and then drives executive module R1 and R2 easy motion, and is 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 change of load, reduce 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 utility model.Should be understood that for those of ordinary skills, under technology enlightenment provided by the utility model, as the common practise of related domain, other equivalent modifications and improvement can also be made, also should be considered as protection domain of the present utility model.
Claims (9)
1. an oil hydraulic motor speed governing feedback control valve, comprises the filler opening be arranged on valve body, return opening, at least one oil hydraulic motor connection mouth, it is characterized in that: also comprise flow control circuit, load feedback loop; Described flow control control loop comprises the solenoid valve, pressure compensator (F), the flow control valve (E) that are connected successively by described filler opening (P), and the filler opening of described flow control valve (E) and oil outlet are connected with the oil outlet of pressure compensator (F) and the first pressure feedback mouth respectively; Described load feedback loop comprises the logic component (C) and one-way valve that connect successively, the oil outlet of described logic component (C) is connected with return opening (T), first pressure feedback mouth of described logic component (C) is connected with oil hydraulic motor connection mouth (A) by one-way valve, 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 first one-way valve (J) is connected with oil hydraulic motor connection mouth (A), and the oil outlet of described 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, second oil outlet of described two-bit triplet solenoid valve (L) 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. a kind of oil hydraulic motor speed governing feedback control valve according to 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 the first damping port (H) and the second damping port (N) respectively.
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. a kind of oil hydraulic motor speed governing feedback control valve according to any one of claim 1 to 8, is characterized in that: the mode that this oil hydraulic motor speed governing feedback control valve adopts thread cartridge integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510756.6U CN204041599U (en) | 2014-09-05 | 2014-09-05 | A kind of oil hydraulic motor speed governing feedback control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510756.6U CN204041599U (en) | 2014-09-05 | 2014-09-05 | A kind of oil hydraulic motor speed governing feedback control valve |
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| CN204041599U true CN204041599U (en) | 2014-12-24 |
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| CN201420510756.6U Active CN204041599U (en) | 2014-09-05 | 2014-09-05 | A kind of oil hydraulic motor speed governing feedback control valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196801A (en) * | 2014-09-05 | 2014-12-10 | 酒泉奥凯种子机械股份有限公司 | Speed-regulating feedback control valve of hydraulic motor |
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2014
- 2014-09-05 CN CN201420510756.6U patent/CN204041599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196801A (en) * | 2014-09-05 | 2014-12-10 | 酒泉奥凯种子机械股份有限公司 | Speed-regulating feedback control valve of hydraulic motor |
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