CN205298125U - Accuse formula electric -hydraulic proportional reversing valve is independently led at both ends - Google Patents
Accuse formula electric -hydraulic proportional reversing valve is independently led at both ends Download PDFInfo
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- CN205298125U CN205298125U CN201620067471.9U CN201620067471U CN205298125U CN 205298125 U CN205298125 U CN 205298125U CN 201620067471 U CN201620067471 U CN 201620067471U CN 205298125 U CN205298125 U CN 205298125U
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- connection section
- reversing valve
- pressure
- elastic helix
- helix part
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Abstract
The utility model discloses an accuse formula electric -hydraulic proportional reversing valve is independently led at both ends, including switching -over valve, two rotary proportional solenoid and two pressure -torsion shaft couplings, every rotary proportional solenoid is connected with the case through the pressure -torsion shaft coupling respectively, the pressure -torsion shaft coupling includes first connecting portion, second connecting portion, first elasticity spiral component, second elasticity spiral component, mounting panel and feedback pole, first connecting portion, second connecting portion, first elasticity spiral component, second elasticity spiral component, mounting panel and as an organic wholeization of feedback pole structure. Implement the beneficial effects of the utility model are that: electric -hydraulic proportional reversing valve adopts the structure of pressure -torsion shaft coupling, and when the rotor promoted the second connecting portion towards moving spool valve, first elasticity spiral component and second elasticity spiral component produced and twist reverse relatively in order to drive first connecting portion rotary motion, and it has zero friction transmission, flexible good, and advantages such as simple and convenient are assembled in small and processing.
Description
Technical field
The utility model relates to electro-hydraulic proportional control system field, more specifically, it relates to control type electrohydraulic proportional reversing valve is independently led at a kind of two ends.
Background technology
Electro-hydraulic proportional valve is adoption rate control techniques, a kind of Hydraulic Elements between switch type hydraulic valve and electrohydraulic servo valve. Owing to electro-hydraulic proportional valve can combine with electronic controls, thus it is convenient to various input, output signal are carried out calculation process, to realize complicated controlling functions. Meanwhile, electro-hydraulic proportional valve has the advantages such as antipollution, low cost and fast response time, obtains a wide range of applications in the industrial production.
Existing electro-hydraulic proportion reversing valve generally can adopt Direct Action Type and lead the design of control type two kinds of structures. Direct action type electrohydraulic proportional reversing valve is by the motion of rotational rate electromagnet Direct driver spool, and its structure is simple, and can work under zero pressure, but owing to large discharge control cannot be realized by the restriction of rotational rate electromagnet output thrust. Lead control type electro-hydraulic proportion reversing valve to change by the pressure of pilot valve control bound sensitive cavity, produce bigger hydraulic static pressure-driven main valve plug motion, it is possible to realize large discharge control, but its complex structure, and control pressure operation cannot be led zero.
Practical novel content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, it is provided that a kind of high-pressure high-flow, and control type electrohydraulic proportional reversing valve is independently led at the simple two ends of structure.
The utility model solves the technical scheme that its technical problem adopts: constructs a kind of two ends and independently leads control type electrohydraulic proportional reversing valve, comprise reversing valve, two rotational rate electromagnets being connected to described reversing valve two ends, and two pressures turn round shaft coupling; Described reversing valve comprises valve body, and the spool being arranged in described valve body; Described in each, rotational rate electromagnet comprises housing, and the rotor being arranged in described housing;
Described spool left end shoulder is offered radial symmetry distribution two to left end pressure hole, left end pressure hole is communicated by two with system pressure mouth P mouth; Described spool right-hand member offers with two pairs of left end pressure hole symmetries two to right-hand member pressure hole, and right-hand member pressure hole is communicated by two with system pressure mouth P mouth; Described valve inner has been offered and left experienced passage and right experience passage, described left experience passage and communicates with spool left end sensitive cavity, described right experience passage and communicates with spool right-hand member sensitive cavity; When described electro-hydraulic proportion reversing valve is in the starting position of balance, described left experience passage and two left end pressure hole is formed the first transfer area, described right experience passage and two to right-hand member pressure hole formed the 2nd transfer area, the first transfer area is identical with the 2nd transfer area;
Rotational rate electromagnet described in each is turned round shaft coupling by described pressure respectively and is connected with described spool; Pressure described in each is turned round shaft coupling and is comprised the 2nd connection section that the first connection section being fixedly connected with described spool is fixedly connected with described rotor, is connected to described first connection section and the first elastic helix part between described 2nd connection section and the 2nd elastic helix part, mounting plate, and multiple feedback rod; Described spool, described first connection section, described 2nd connection section, and described rotor all coaxially arranges; Described first connection section, described 2nd connection section, described first elastic helix part, described 2nd elastic helix part, described mounting plate and described feedback rod are integrated;
Described first connection section is the right cylinder that external diameter is identical with described 2nd connection section; Described first elastic helix part is identical with the rotation direction of described 2nd elastic helix part, and described first elastic helix part and described 2nd elastic helix part respectively the projection on the same end face of described first connection section be separated from each other; Described mounting plate comprises the plate body being fixedly mounted on described valve body, and is opened in the through hole at described Ban Ti center; Described first connection section can stretch motion in described through hole; Between the outer wall that feedback rod described in each is connected to described first connection section and the inwall of described through hole; Multiple described feedback rod is evenly distributed on the outer wall of described first connection section;
When described rotor turns is to drive described 2nd connection section to rotate, described first elastic helix part and described 2nd elastic helix part produce relative torsion to drive described first connection section rotary motion.
Independently leading at two ends described in the utility model in control type electrohydraulic proportional reversing valve, described plate body is square.
Independently leading at two ends described in the utility model in control type electrohydraulic proportional reversing valve, described electro-hydraulic proportion reversing valve also comprises the sleeve being sleeved on described pressure and turning round the outside of shaft coupling one end; One end of described sleeve is fixedly connected with described mounting plate, and the other end of described sleeve is connected with described housing.
Independently leading at two ends described in the utility model in control type electrohydraulic proportional reversing valve, described sleeve is square hollow structure.
Independently leading at two ends described in the utility model in control type electrohydraulic proportional reversing valve, described feedback rod is four.
Implement two ends of the present utility model and independently lead control type electrohydraulic proportional reversing valve, there is following useful effect: described electro-hydraulic proportion reversing valve adopts the pressure of band feedback rod to turn round the structure of shaft coupling, when rotational rate electromagnet obtains electric, the rotary motion of rotor makes Spool rotating, spool two ends pressure reduction makes spool move, first elastic helix part and the 2nd elastic helix part produce axile displacement distance and will produce certain reset torque, and feedback rod also will produce certain reset torque, the first connection section is jointly made to rotate back to initial angle, again balance is reached, adopting the pressure of band feedback rod to turn round shaft coupling has without friction transmission, flexible, dynamic response is good, the advantage such as volume is little and process and assemble is easy.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the internal structure schematic diagram that control type electrohydraulic proportional reversing valve is independently led at the two ends that the better embodiment of the utility model provides;
Fig. 2 is the A portion enlarged view in Fig. 1;
Fig. 3 is the structure iron that two in the electro-hydraulic proportion reversing valve shown in Fig. 1 pressure torsion shaft coupling is connected with spool, rotor respectively;
Fig. 4 is the structure iron that the pressure in the electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling;
Fig. 5 is the local structural graph that the pressure in the electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling;
Fig. 6 is that the pressure in the electro-hydraulic proportion reversing valve shown in Fig. 1 turns round the first elastic helix part of shaft coupling and degree of the disturbing sketch of described 2nd elastic helix part.
Embodiment
In order to technology feature of the present utility model, object and effect are had understanding clearly, now compare accompanying drawing and embodiment of the present utility model is described in detail. In description of the present utility model, it is to be understood that term " first ", " the 2nd ", " left end ", " right-hand member " etc. are only for describing object, and can not be interpreted as instruction or hint relative importance.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, better embodiment of the present utility model provides a kind of two ends independently to lead control type electrohydraulic proportional reversing valve, and it comprises reversing valve 1, rotational rate electromagnet 2, pressure torsion shaft coupling 3 and sleeve 4.
Specifically, as shown in Figure 1, Figure 2 and shown in Fig. 3, this reversing valve 1 comprises valve body 11, and the spool 12 being arranged in valve body 11. Left end pressure hole 121 is communicated by offer radial symmetry distribution on this spool 12 left end shoulder two by left end pressure hole 121, two with system pressure mouth P mouth, and A mouth and B mouth are respectively working oil mouth, and T mouth is oil return oil mouth. This spool 12 right-hand member is offered with two pairs of left end pressure hole 121 symmetries two and is communicated with system pressure mouth P mouth equally by right-hand member pressure hole 123 by right-hand member pressure hole 123, two. This valve body 11 inside has been offered and left experienced passage 122 and right experience passage 124, when electro-hydraulic proportion reversing valve is in the starting position of balance, this is left experiences passage 122 and two left end pressure hole 121 is formed the first transfer area, this is right experiences passage 124 and two right-hand member pressure hole 123 is formed the 2nd transfer area, and the first transfer area is identical with the 2nd transfer area.
This rotational rate electromagnet 2 is provided with two, and two rotational rate electromagnets 2 are connected to the two ends of reversing valve 1. Each rotational rate electromagnet 2 comprises housing 21, and the rotor 22 being arranged in housing 21. In the present embodiment, each rotational rate electromagnet 2 is turned round shaft coupling 3 by pressure respectively and is connected with spool 12. This rotational rate electromagnet 2 is structure common in prior art, does not repeat them here.
Such as Fig. 3, Fig. 4, Fig. 5 and consult shown in Fig. 1, this pressure turn round shaft coupling 3 for the rotation of the rotor 22 in rotational rate electromagnet 2 being turned into the rotary motion of the spool 12 in reversing valve 1. Pressure is turned round shaft coupling 3 and is comprised the first connection section 31, the 2nd connection section 32, first elastic helix part 33, the 2nd elastic helix part 34, mounting plate 35 and feedback rod 36. First connection section 31, the 2nd connection section 32, first elastic helix part 33, the 2nd elastic helix part 34, mounting plate 35 and feedback rod 36 are integrated, and its globality structure is better, comparatively easy during electro-hydraulic proportion reversing valve described in assembly and disassembly. In this embodiment, spool 12, first connection section 31, the 2nd connection section 32, and rotor 22 all coaxially arranges.
Wherein, such as Fig. 4, Fig. 5 and consult shown in Fig. 1, Fig. 2, this first connection section 31 is fixedly connected with spool 12, and the 2nd connection section 32 is fixedly connected with rotor 22, and the first connection section 31 is the right cylinder that external diameter is identical with the 2nd connection section 32. This first elastic helix part 33 and the 2nd elastic helix part 34 are connected between the first connection section 31 and the 2nd connection section 32, also namely the first elastic helix part 33 is connected to the first connection section 31 both ends of the surface adjacent with the 2nd connection section 32, and the 2nd elastic helix part 34 is connected to the first connection section 31 both ends of the surface adjacent with the 2nd connection section 32 equally. In the present embodiment, first elastic helix part 33 is identical with the rotation direction of the 2nd elastic helix part 34, and first elastic helix part 33 and the 2nd elastic helix part 34 respectively the projection on the same end face of the first connection section 31 be separated from each other, this is projected as fan annular, and two projections are arranged axisymmetricly. When rotor 22 rotates to drive the 2nd connection section 32 to rotate, the first elastic helix part 33 and the 2nd elastic helix part 34 produce relative torsion to drive the first connection section 31 rotary motion.
Consulting shown in Fig. 5, Fig. 6, in the present embodiment, it may be preferred that the first elastic helix part 33 and the 2nd elastic helix part 34 are identical structure, and reverse symmetry is arranged, its mathematical model is as follows:
X=�� r
L=�� r
Wherein:
��: the first elastic helix part or central angle corresponding to the 2nd elastic helix part end on projection;
R: the first elastic helix part or radius corresponding to the 2nd elastic helix part end on projection;
The central angle that on ��: the first elastic helix part or the 2nd elastic helix part, any one section of spirochete end on projection is corresponding;
X: the arc length that central angle �� is corresponding;
L: the arc length that central angle �� is corresponding;
The angle that ��: the first elastic helix part, the 2nd cross section, elastic helix part x place turn over;
The amount of deflection at the w: the first elastic helix part, the 2nd elastic helix part x place;
The dislocation distance of the ��: the first elastic helix part and the 2nd elastic helix part.
In Fig. 6, �� l is the variable quantity of the arc length that central angle �� is corresponding. Above-mentioned mathematical model reaction pressure can turn round the first elastic helix part 33 in shaft coupling 3 and degree of the disturbing changing conditions after the expansion of the 2nd elastic helix part 34 preferably, the energy of deformation of the first elastic helix part 33 and the 2nd elastic helix part 34 is fitted design requirements more, and pressure is turned round the effect amplified and is reached best.
As shown in Fig. 3, Fig. 4 and Fig. 5, this mounting plate 35 is fixedly mounted on valve body 11, is fixedly mounted on reversing valve 1 so that pressure turns round shaft coupling 3. In the present embodiment, mounting plate 35 comprises the plate body 351 in square, and through hole 352, first connection section 31 being opened in Ban Ti 351 center can stretch motion in through hole 352. This feedback rod 36 is roughly direct rod shape structure, between its outer wall being connected to the first connection section 31 and the inwall of through hole 352. In the present embodiment, feedback rod 36 is provided with multiple, and multiple feedback rod 36 is evenly distributed on the outer wall of the first connection section 31. Preferably, feedback rod 36 is provided with four, and four feedback rods 36 are in crossing distribution. Adopt the structure of this feedback rod 36, when the first elastic helix part 33 and the 2nd elastic helix part 34 produce axile displacement distance, first elastic helix part 33 and the 2nd elastic helix part 34 will produce certain reset torque, this feedback rod 36 also produces certain reset torque, the first connection section 31 is jointly made to rotate back to initial angle, so that pressure turns round shaft coupling 3 again reaches equilibrium state.
As shown in Figure 1, one end that this sleeve 4 suit pressure turns round shaft coupling 3 is outside, and one end of sleeve 4 is fixedly connected with mounting plate 35, and the other end of sleeve 4 is connected with housing 21. In the present embodiment, sleeve 4 is square hollow structure. Adopt the structure of this sleeve 4, it is possible to make pressure turn round shaft coupling 3 and firmly be connected between reversing valve 1 and rotational rate electromagnet 2.
The concrete principle of work of described electro-hydraulic proportion reversing valve: as shown in Figure 3, system pressure mouth P, working oil mouth A and B, and oil return pressure port T. When both sides rotary magnet 2 all dead electricity time, spool 12 is in zero-bit, pressure hole 121 and the transfer area experiencing passage 122, pressure hole 123 and the transfer area experiencing passage 124, these two transfer areas are identical, and the pressure at spool 12 two ends is identical, therefore spool 12 is in balance. When reversing valve 1 right-hand member electro-magnet 2 obtains electric, spool 12 will turn clockwise (from the direction of valve body 11 faced by right-hand member electro-magnet 2), now the impression passage 122 of left end reduces with left end pressure hole 121 transfer area, the left cavity pressure decline of spool 12, with reason, now the impression passage 124 of right-hand member increases with right-hand member pressure hole 123 transfer area, and the right cavity pressure of spool 12 raises. In the uneven situation of left and right two cavity pressure, spool 12 will move to left, along with spool 12 moves to left, turn round the effect of shaft coupling 3 in pressure under, spool 12 will again be rotated counterclockwise (from the direction of valve body 11 faced by right-hand member electro-magnet 2) and return initial rest position, complete electrical-liquid control. With reason, reversing valve 1 left end electro-magnet 2 obtains electric, and spool 12 will move to right, and complete electrical-liquid control. Compared with other electro-hydraulic proportion reversing valve, the pressure that pressure turns round shaft coupling 3 is turned round switching process and be there is not frictional force and gap, and the distance misplaced or force amplifying function can be adjusted by changing the double-spiral structure parameter of the first elastic helix part 33 and the 2nd elastic helix part 34.
In the present embodiment, similar between first elastic helix part 33 and the 2nd elastic helix part 34 is in DNA double spirane structure, this double-spiral structure axile displacement distance, the relation of approximate right-angle triangle two between square edge and hypotenuse is formed between circumference arc length and structure length of run three, obviously, because the length of spirane structure is constant, when the 2nd connection section 32 makes the first connection section 31 and the dislocation of the 2nd connection section 32 change by the push-and-pull effect of rotor 22, the camber line distance of the first elastic helix part 33 and the 2nd elastic helix part 34 then must be made to change, namely there is relative torsion in the first elastic helix part 33 and the 2nd elastic helix part 34, thus drive the first connection section 31 rotary motion. and first elastic helix part 33 and the 2nd elastic helix part 34 radial rotary big, be enough to the rotary motion of rotor 22 is directly transmitted the rotary motion into spool 12, feedback rod 36 can store moment of torsion simultaneously, when the current decreases, has force feedback effect. therefore, the rotary motion of rotor 22 first turns into the rotation of spool 12, it is moved under the left chamber of spool 12 and the unbalanced situation of right cavity pressure, then counter-rotation is realized to initial angle turn round the effect of shaft coupling 3 in pressure under, spool 12 has moved, reaching equilibrium theory of tide, spool 12 displacement amount is directly proportional to the angle of rotary magnet 2. compared with other electro-hydraulic proportion reversing valve, the pressure that pressure turns round shaft coupling 3 is turned round switching process and be there is not frictional force and gap, and the distance misplaced or force amplifying function can be adjusted by changing the double-spiral structure parameter of the first elastic helix part 33 and the 2nd elastic helix part 34.
Above in conjunction with accompanying drawing, embodiment of the present utility model is described; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; the those of ordinary skill of this area is under enlightenment of the present utility model; not departing from the utility model objective and in scope situation that claim is protected, also can make a lot of form, these all belong within protection of the present utility model.
Claims (5)
1. control type electrohydraulic proportional reversing valve is independently led at two ends, it is characterized in that: comprise reversing valve (1), two rotational rate electromagnets (2) being connected to described reversing valve (1) two ends, and two pressures turn round shaft coupling (3); Described reversing valve (1) comprises valve body (11), and the spool (12) being arranged in described valve body (11); Rotational rate electromagnet described in each (2) comprises housing (21), and the rotor (22) being arranged in described housing (21);
Described spool (12) left end shoulder is offered radial symmetry distribution two to left end pressure hole (121), left end pressure hole (121) is communicated by two with system pressure mouth P mouth; Described spool (12) right-hand member offers with two pairs of left end pressure holes (121) symmetries two to right-hand member pressure hole (123), and right-hand member pressure hole (123) is communicated by two with system pressure mouth P mouth; Described valve body (11) inside has been offered and left experienced passage (122) and right experience passage (124), described left experience passage (122) and communicate with spool (12) left end sensitive cavity, described right experience passage (124) and communicate with spool (12) right-hand member sensitive cavity; When described electro-hydraulic proportion reversing valve is in the starting position of balance, described left experience passage (122) and two left end pressure hole (121) is formed the first transfer area, described right experience passage (124) with two to right-hand member pressure hole (123) formed the 2nd transfer area, described first transfer area is identical with described 2nd transfer area;
Rotational rate electromagnet described in each (2) is turned round shaft coupling (3) by described pressure respectively and is connected with described spool (12); Pressure described in each is turned round shaft coupling (3) and is comprised the 2nd connection section (32) that the first connection section (31) being fixedly connected with described spool (12) is fixedly connected with described rotor (22), is connected to described first connection section (31) and the first elastic helix part (33) between described 2nd connection section (32) and the 2nd elastic helix part (34), mounting plate (35), and multiple feedback rod (36); Described spool (12), described first connection section (31), described 2nd connection section (32), and described rotor (22) all coaxially arranges; Described first connection section (31), described 2nd connection section (32), described first elastic helix part (33), described 2nd elastic helix part (34), described mounting plate (35) and described feedback rod (36) are integrated;
Described first connection section (31) and described 2nd connection section (32) are the identical right cylinder of external diameter; Described first elastic helix part (33) is identical with the rotation direction of described 2nd elastic helix part (34), and described first elastic helix part (33) and described 2nd elastic helix part (34) respectively the projection on the same end face of described first connection section (31) be separated from each other; Described mounting plate (35) comprises the plate body (351) being fixedly mounted on described valve body (11), and is opened in the through hole (352) at described plate body (351) center; Described first connection section (31) can be stretched motion in described through hole (352); Between the outer wall that feedback rod described in each (36) is connected to described first connection section (31) and the inwall of described through hole (352); Multiple described feedback rod (36) is evenly distributed on the outer wall of described first connection section (31);
When described rotor (22) rotates to drive described 2nd connection section (32) to rotate, described first elastic helix part (33) produces relative torsion to drive the rotary motion of described first connection section (31) with described 2nd elastic helix part (34).
2. control type electrohydraulic proportional reversing valve is independently led at two ends according to claim 1, it is characterised in that: described plate body (351) is in square.
3. control type electrohydraulic proportional reversing valve is independently led at two ends according to claim 1, it is characterised in that: described electro-hydraulic proportion reversing valve also comprises the sleeve (4) being sleeved on described pressure and turning round the outside of shaft coupling (3) one end; One end of described sleeve (4) is fixedly connected with described mounting plate (35), and the other end of described sleeve (4) is connected with described housing (21).
4. control type electrohydraulic proportional reversing valve is independently led at two ends according to claim 3, it is characterised in that: described sleeve (4) is square hollow structure.
5. control type electrohydraulic proportional reversing valve is independently led at two ends according to the arbitrary item of Claims 1 to 4, it is characterised in that: described feedback rod (36) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067471.9U CN205298125U (en) | 2016-01-25 | 2016-01-25 | Accuse formula electric -hydraulic proportional reversing valve is independently led at both ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067471.9U CN205298125U (en) | 2016-01-25 | 2016-01-25 | Accuse formula electric -hydraulic proportional reversing valve is independently led at both ends |
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| Publication Number | Publication Date |
|---|---|
| CN205298125U true CN205298125U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620067471.9U Expired - Fee Related CN205298125U (en) | 2016-01-25 | 2016-01-25 | Accuse formula electric -hydraulic proportional reversing valve is independently led at both ends |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526204A (en) * | 2016-01-25 | 2016-04-27 | 浙江申达机器制造股份有限公司 | Two-end-independent guidance and control type electro-hydraulic proportional reversing valve |
| CN113217493A (en) * | 2021-04-15 | 2021-08-06 | 浙大城市学院 | Zero-adjustable electro-hydraulic proportional valve |
-
2016
- 2016-01-25 CN CN201620067471.9U patent/CN205298125U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526204A (en) * | 2016-01-25 | 2016-04-27 | 浙江申达机器制造股份有限公司 | Two-end-independent guidance and control type electro-hydraulic proportional reversing valve |
| CN105526204B (en) * | 2016-01-25 | 2018-02-16 | 浙江申达机器制造股份有限公司 | Independently lead control type electrohydraulic proportional reversing valve in both ends |
| CN113217493A (en) * | 2021-04-15 | 2021-08-06 | 浙大城市学院 | Zero-adjustable electro-hydraulic proportional valve |
| CN113217493B (en) * | 2021-04-15 | 2023-08-04 | 浙大城市学院 | Zero-position-adjustable electro-hydraulic proportional valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20180125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |