CN205331101U - Formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement - Google Patents
Formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement Download PDFInfo
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- CN205331101U CN205331101U CN201620070204.7U CN201620070204U CN205331101U CN 205331101 U CN205331101 U CN 205331101U CN 201620070204 U CN201620070204 U CN 201620070204U CN 205331101 U CN205331101 U CN 205331101U
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- connecting portion
- elastic helix
- electro
- spool
- reversing valve
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Abstract
The utility model discloses a formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement, including switching -over valve, proportion electro -magnet and pressure -torsion shaft coupling, the pressure -torsion shaft coupling includes first connecting portion, second connecting portion, two first elasticity spiral component, two second elasticity spiral component and mounting panel, first elasticity spiral component and second elasticity spiral component's revolves to on the contrary first connecting portion, second connecting portion, first elasticity spiral component, second elasticity spiral component and as an organic wholeization of mounting panel structure. Implement the beneficial effects of the utility model are that: 2D electric -hydraulic proportional reversing valve adopts the structure of pressure -torsion shaft coupling, and when armature 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
This utility model relates to electro-hydraulic proportional control system field, more particularly, it relates to formula pressure is reduced in a kind of displacement turns round coupling type 2D electro-hydraulic proportion reversing valve。
Background technology
Electro-hydraulic proportional valve is adoption rate control technology, a kind of Hydraulic Elements between switch type hydraulic valve and electrohydraulic servo valve。Owing to electro-hydraulic proportional valve can combine with electronic-controlled installation, thus it is easy to various inputs, output signal are carried out calculation process, to realize the control function of complexity。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 two kinds of structures of control type。Direct action type electrohydraulic proportional reversal valve is moved by proportion electro-magnet direct drive valve core, its simple in construction, and can work under zero pressure, but owing to big flow-control cannot be realized by the restriction of proportion electro-magnet thrust output。Lead control type electro-hydraulic proportion reversing valve to be changed by the pressure of pilot valve control bound sensitive cavity, produce the motion of bigger hydraulic static pressure-driven main valve plug, it is possible to achieve big flow-control, but its structure is complicated, and cannot lead zero and work under governor pressure。
Utility model content
The technical problems to be solved in the utility model is in that, for the drawbacks described above of prior art, it is provided that a kind of high-pressure high-flow, and the displacement of simple in construction is reduced formula pressure and turned round coupling type 2D electro-hydraulic proportion reversing valve。
This utility model solves its technical problem and be the technical scheme is that constructing a kind of displacement reduces formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve, including reversal valve and proportion electro-magnet；Described reversal valve includes valve body, and is arranged on the spool in described valve body；Described proportion electro-magnet includes housing, and is arranged on the armature in described housing；Described 2D electro-hydraulic proportion reversing valve also includes the pressure torsion shaft coupling for connecting described reversal valve and described proportion electro-magnet；Described pressure torsion shaft coupling includes fixing the first connecting portion being connected with described spool and fixes the second connecting portion being connected, two the first elastic helix parts, two the second elastic helix parts with described armature, and is fixedly mounted on the installing plate on described valve body；Described first connecting portion, described second connecting portion, described first elastic helix part, described second elastic helix part, and described installing plate is integrated；Two described first elastic helix parts are connected between described first connecting portion and described second connecting portion, and two described second elastic helix parts are connected between described second connecting portion and described installing plate；
Described first connecting portion and described second connecting portion are the cylinder being coaxially disposed；The rotation direction of described first elastic helix part is identical with the rotation direction of described second elastic helix part；Described first elastic helix part, described second elastic helix part lead angle first become towards one end of described second connecting portion by described first connecting portion and diminish again greatly；The rotation direction of two described first elastic helix parts is identical, and about described first connecting portion axis axisymmetricly；The rotation direction of two described second elastic helix parts is identical, and about described first connecting portion axis axisymmetricly；Two described first elastic helix parts form the first projection at described second connecting portion near the end face of described first connecting portion, two described second elastic helix parts form the second projection at described second connecting portion near the end face of described first connecting portion, and described first projection is positioned at described second projection；
When described armature promotes described second connecting portion towards described valve core movement, two described first elastic helix parts and two described second elastic helix parts produce relative torsion to drive described first connecting portion rotary motion。
Reducing formula pressure in displacement described in the utility model to turn round in coupling type 2D electro-hydraulic proportion reversing valve, the number of turns of described first elastic helix part is identical with the number of turns of described second elastic helix part。
Reducing formula pressure in displacement described in the utility model and turn round in coupling type 2D electro-hydraulic proportion reversing valve, the number of turns of described first elastic helix part is 0.45 circle～0.48 circle。
Reducing formula pressure in displacement described in the utility model and turn round in coupling type 2D electro-hydraulic proportion reversing valve, described installing plate includes the plate body in square, and is opened in the through hole at described plate body center；Described first connecting portion can in described through hole stretching motion。
Reducing formula pressure in displacement described in the utility model to turn round in coupling type 2D electro-hydraulic proportion reversing valve, described 2D electro-hydraulic proportion reversing valve also includes the sleeve being sleeved on the outside of described second elastic helix part；One end of described sleeve is fixing with described installing plate to be connected, and the other end of described sleeve is connected with described housing。
Reducing formula pressure in displacement described in the utility model to turn round in coupling type 2D electro-hydraulic proportion reversing valve, described sleeve is square structure；Described square structure offers through hole, and described second elastic helix part is placed in described through hole。
Reduce formula pressure in displacement described in the utility model to turn round in coupling type 2D electro-hydraulic proportion reversing valve, described spool is provided with low pressure hole, pressure hole and experiences passage；
Wherein, the passage high h of overlapping bow is experienced with described in described low pressure hole1, the bow-shaped area A that passage is overlapping is experienced, with described, in described low pressure hole1It is expressed as according to low pressure hole and the relational expression experienced between passage:
Described pressure hole experiences the passage high h of overlapping bow with described2, described pressure hole experiences, with described, the bow-shaped area A that passage is overlapping2It is expressed as according to pressure hole and the relational expression experienced between passage:
In formula:
rd: the radius in pressure hole or low pressure hole；
Rd: the shoulder radius of spool；
The effective radius of the R: the first elastic helix part and the second elastic helix part transmission power；
θm: when proportion electro-magnet, the corner displacement clockwise of spool；
θv: when proportion electro-magnet, the corner displacement counterclockwise of spool；
xm: proportion electro-magnet output level displacement；
xv: valve core movement displacement；
h0: pressure hole or low pressure hole initially bend height；
The lead angle of the β: the first elastic helix part or the second elastic helix part。
Implement displacement of the present utility model and reduce formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve, have the advantages that described 2D electro-hydraulic proportion reversing valve adopts pressure to turn round the structure of shaft coupling, when armature promotes the second connecting portion towards valve core movement, two the first elastic helix parts and two the second elastic helix parts produce relative torsion to drive the first connecting portion rotary motion, thus the rectilinear motion of armature being become the rotary motion of spool, compared with other electro-hydraulic proportional valve, described 2D electro-hydraulic proportion reversing valve has without friction transmission, flexible, the advantage such as volume is little and process and assemble is easy；Secondly as the rotation direction of the first elastic helix part is identical with the rotation direction of the second elastic helix part, it is possible to play and reduce spool stroke, increase the effect of spool positioning precision；Furthermore, because when operating pressure is zero or decompression, owing to now spool axial resistance is almost nil, spool can be pushed directly on completely by proportion electro-magnet, play the feature of direct-acting valve, therefore conventional pilot control level electro-hydraulic proportion reversing valve can be overcome to need individually to provide the shortcoming of pressure for leading control level, make hydraulic system more simple；Finally, by changing the first elastic helix part lead angle tangent value and the ratio of the second elastic helix part lead angle tangent value, design can be facilitated to reduce the multiple of displacement。
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 formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in the displacement that this utility model preferred embodiment provides；
Fig. 2 is the three-dimensional structure diagram that the pressure in the 2D electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling；
Fig. 3 is another three-dimensional structure diagram that the pressure in the 2D electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling；
Fig. 4 is the cut-away view that the pressure in the 2D electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling；
Fig. 5 is the partial sectional view that the pressure in the 2D electro-hydraulic proportion reversing valve shown in Fig. 1 turns round shaft coupling；
Fig. 6 is the 2D electro-hydraulic proportion reversing valve mesolow hole shown in Fig. 1 and the location diagram experiencing passage。
Detailed description of the invention
In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, now comparison accompanying drawing describes detailed description of the invention of the present utility model in detail。
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, preferred embodiment of the present utility model provides a kind of displacement to reduce formula pressure and turns round coupling type 2D electro-hydraulic proportion reversing valve, and it includes reversal valve 1, proportion electro-magnet 2, pressure turn round shaft coupling 3 and sleeve 4。
Specifically, as shown in Fig. 1 and Fig. 6, this reversal valve 1 includes valve body 11, and is arranged on the spool 12 in valve body 11。This spool 12 is provided with low pressure hole 13, pressure hole 14 and experiences passage 15。Wherein, the high h of bow that low pressure hole 13 is overlapping with experiencing passage 151, bow-shaped area A that low pressure hole 13 is overlapping with experiencing passage 151It is expressed as according to low pressure hole 13 and the relational expression experienced between passage 15:
The high h of bow that pressure hole 14 is overlapping with experiencing passage 152, bow-shaped area A that pressure hole 14 is overlapping with experiencing passage 152It is expressed as according to pressure hole 14 and the relational expression experienced between passage 15:
In formula:
rd: the radius in pressure hole 14 or low pressure hole 13；
Rd: the shoulder radius of spool 12；
R: the first elastic helix part 33 and the second elastic helix part 34 transmit the effective radius of power；
θm: when proportion electro-magnet 2, the corner displacement clockwise of spool 12；
θv: when proportion electro-magnet 2, the corner displacement counterclockwise of spool 12；
xm: proportion electro-magnet 2 output level displacement；
xv: spool 12 moving displacement；
h0: pressure hole 14 or low pressure hole 13 initially bend height；
The lead angle of the β: the first elastic helix part 33 or the second elastic helix part 34。
Relation above formula can relatively accurately describe this reversal valve and lead the change procedure of control level flow area, thus the size variation process of control level flow is led in reflection, therefore, the Static and dynamic performance of whole 2D electro-hydraulic proportion reversing valve is had restrictive function by this relational expression。
As it is shown in figure 1, this proportion electro-magnet 2 includes housing 21, and it is arranged on the armature 22 in housing 21。Proportion electro-magnet 2 structure that to be in prior art common, does not repeat them here。
Such as Fig. 2, Fig. 3, Fig. 4 and consult shown in Fig. 1, this pressure turns round shaft coupling 3 for the rectilinear motion of the armature 22 in proportion electro-magnet 2 becomes the rotary motion of the spool 12 in reversal valve 1。Pressure is turned round shaft coupling 3 and is included the first connecting portion the 31, second connecting portion the 32, first elastic helix part the 33, second elastic helix part 34 and installing plate 35。First connecting portion the 31, second connecting portion the 32, first elastic helix part the 33, second elastic helix part 34 and installing plate 35 are integrated, and its globality structure is better, relatively simple during 2D electro-hydraulic proportion reversing valve described in assembly and disassembly。In the present embodiment, pressure is turned round shaft coupling 3 and the 3D mode printed can be adopted to process。
Wherein, such as Fig. 2, Fig. 3, Fig. 4 and Fig. 5 and consult shown in Fig. 1, this first connecting portion 31 is fixing with spool 12 to be connected, this second connecting portion 32 is fixing with armature 22 to be connected, first connecting portion 31 and the second connecting portion 32 are the cylinder being coaxially disposed, and the external diameter of the first connecting portion 31 is less than the external diameter of the second connecting portion 32。
This first elastic helix part 33 is connected between the first connecting portion 31 and the second connecting portion 32, namely the first elastic helix part 33 is connected to the both ends of the surface that the first connecting portion 31 is adjacent with the second connecting portion 32。In the present embodiment, first elastic helix part 33 is provided with two, the rotation direction of two the first elastic helix parts 33 is identical, and two the first elastic helix parts 33 about the first connecting portion 31 axis axisymmetricly, now, the projection on the same end face of the first connecting portion 31 of two the first elastic helix parts 33 is separated from each other, and this is projected as fan annular, and two projections are arranged axisymmetricly。This second elastic helix part 34 is connected between the second connecting portion 32 and installing plate 35, namely the second elastic helix part 34 is connected to the both ends of the surface that the second connecting portion 32 is adjacent with installing plate 35。In the present embodiment, second elastic helix part 34 is provided with two, the rotation direction of two the second elastic helix parts 34 is identical, and two the second elastic helix parts 34 also with regard to the first connecting portion 31 axis axisymmetricly, now, the projection on the same end face of the first connecting portion 31 of two the second elastic helix parts 34 is separated from each other, and this is projected as fan annular, and two projections are arranged axisymmetricly。In this embodiment, the rotation direction of the first elastic helix part 33 is identical with the rotation direction of the second elastic helix part 34, and both are variable-pitch auger body。The lead angle of first elastic helix part the 33, second elastic helix part 34 first becomes towards one end of the second connecting portion 32 by the first connecting portion 31 and diminishes greatly again, namely, first elastic helix part the 33, second elastic helix part 34 is near first connecting portion the 31, second connecting portion 32 end positions, its lead angle is less, first elastic helix part the 33, second elastic helix part 34 is in the centre position near the first connecting portion 31 and the second connecting portion 32, and its lead angle is bigger。
In the present embodiment, two the first elastic helix parts 33 form the first projection at the second connecting portion 32 near the end face of the first connecting portion 31, two the second elastic helix parts 34 form the second projection at the second connecting portion 32 near the end face of the first connecting portion 31, first projection is positioned at the second projection, namely the helix external diameter of the first elastic helix part 33 is less than the helix external diameter of the second elastic helix part 34。
For ensureing that the first elastic helix part 33 and the second elastic helix part 34 have bigger moment of torsion, and avoid producing each other to interfere, the number of turns of the first elastic helix part 33 is identical with the number of turns of the second elastic helix part 34, and the number of turns of the number of turns of the first elastic helix part 33 and the second elastic helix part 34 is 0.45 circle～0.48 circle。
Such as Fig. 2 and consult shown in Fig. 1 and Fig. 3, this installing plate 35 is fixedly mounted on valve body 11, so that pressure is turned round shaft coupling 3 and is fixedly mounted on reversal valve 1。In the present embodiment, installing plate 35 includes being the plate body 351 of square, and is opened in the through hole 352 at plate body 351 center, the first connecting portion 31 can in through hole 352 stretching motion。When armature 22 promotes the second connecting portion 32 to move towards spool 12, two the first elastic helix parts 33 and two the second elastic helix parts 34 produce relative torsion to drive the first connecting portion 31 rotary motion。
As it is shown in figure 1, this sleeve 4 is sleeved on the outside of the second elastic helix part 34, one end of sleeve 4 is fixing with installing plate 35 to be connected, and the other end of sleeve 4 is connected with housing 21。In the present embodiment, sleeve 4 is square structure, and this square structure offers through hole (non-label), and the second elastic helix part 34 is placed in this through hole。Adopt the structure of this sleeve 4, it is possible to make pressure turn round shaft coupling 3 and be us shown firmly attached between reversal valve 1 and proportion electro-magnet 2。
The specific works principle of described 2D electro-hydraulic proportion reversing valve: when armature 22 promotes the second connecting portion 32 to move towards spool 12, between two the first elastic helix parts 33, and the structure between two the second elastic helix parts 34 is similar to DNA double helical structure, this double-spiral structure axile displacement distance, two relations between right-angle side and hypotenuse of approximate right angled triangle are constituted between circumference arc length and structure length of run three, obviously, because the length of helical structure is constant, when the second connecting portion 32 is made the first connecting portion 31 and the dislocation of the second connecting portion 32 change by the push-and-pull action of armature 22, then necessarily make the camber line distance of two the first elastic helix parts 33, and the camber line distance of two the second elastic helix parts 34 changes, namely there is relative torsion in two the first elastic helix parts 33, and there is relative torsion in two the second elastic helix parts 34, thus driving the first connecting portion 31 rotary motion。Owing to the first elastic helix part 33 is identical with the rotation direction of the second elastic helix part 34, but the stress point of its rotation is also identical, therefore the angle that the angle of the first connecting portion 31 rotation is rotated by the second connecting portion 32 is cut down, so that the angle that spool 12 turns over is reduced。Specific as follows: when providing proportion electro-magnet 2 positive current, armature 22 moves towards spool 12, the hydraulic power being subject to due to spool 12 is much larger than electric magnet thrust, now spool 12 cannot be pushed directly on by proportion electro-magnet 2, therefore the first connecting portion 31 also cannot rectilinear motion, now two the first elastic helix parts 33 and two the second elastic helix parts 34 are subject to the pressure generation relative torsion of electric magnet, the draw direction of two the second elastic helix parts 34 will make the second connecting portion 32 turn clockwise (in the face of spool direction), the draw direction of two the first elastic helix parts 33 also will make the first connecting portion 31 turn clockwise (in the face of spool direction), and last angle is that both angles are added, due to the first connecting portion 31 with spool 12 right-hand member for connecting firmly, therefore the angle that spool 12 rotates will be increased。Spool 12 (from the right side to the left) clockwise rotates, spool 12 left end sensitive cavity pressure is made to reduce, and spool 12 right-hand member pressure is constant, therefore spool 12 will to left movement, along with spool 12 yearns for motion, to counterclockwise (in the face of spool direction) of two the first elastic helix parts 33 and two the second elastic helix parts 34 rotates, and rotate identical with the angle of turn clockwise before (in the face of spool direction) counterclockwise (in the face of spool direction), spool about 12 two cavity pressure rebalancing, spool 12 is static, reduce formula pressure torsion shaft coupling eventually through displacement and the rectilinear motion of armature 22 is first become the rotary motion of spool 12, increase the anglec of rotation of spool 12, then the purpose that spool 12 Displacement Ratio armature 22 is big is reached。In like manner, when providing proportion electro-magnet 2 negative current, armature 22 moves towards away from spool 12 direction, and two the first elastic helix parts 33 are with two the second elastic helix part 34 direction of rotation also by identical, and the displacement of last spool 12 obtains opposite direction and reduces。
Compared with other electro-hydraulic proportional valve, pressure is turned round the pressure torsion transformation process of shaft coupling 3 and is absent from frictional force and gap, and the double-spiral structure parameter that the distance misplaced or power minification can pass through to change two the first elastic helix parts 33 and two the second elastic helix parts 34 be adjusted。Furthermore, when reversal valve 1 operating pressure is zero or decompression, owing to now the axial hydraulic power of spool is almost nil, spool can be pushed directly on by proportion electro-magnet completely, play the feature of direct-acting valve。
Above in conjunction with accompanying drawing, embodiment of the present utility model is described; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; without departing under this utility model objective and scope of the claimed protection situation, it may also be made that a lot of form, these belong within protection of the present utility model。
Claims (7)
1. a formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement, including reversal valve (1) and proportion electro-magnet (2)；Described reversal valve (1) includes valve body (11), and is arranged on the spool (12) in described valve body (11)；Described proportion electro-magnet (2) includes housing (21), and is arranged on the armature (22) in described housing (21)；It is characterized in that: described 2D electro-hydraulic proportion reversing valve also includes pressure torsion shaft coupling (3) for connecting described reversal valve (1) and described proportion electro-magnet (2)；Described pressure is turned round shaft coupling (3) and is included fixing the second connecting portion (32) being connected, two the first elastic helix parts (33), two the second elastic helix parts (34) with fixing the first connecting portion (31) being connected of described spool (12) with described armature (22), and is fixedly mounted on the installing plate (35) on described valve body (11)；Described first connecting portion (31), described second connecting portion (32), described first elastic helix part (33), described second elastic helix part (34), and described installing plate (35) is integrated；Two described first elastic helix parts (33) are connected between described first connecting portion (31) and described second connecting portion (32), and two described second elastic helix parts (34) are connected between described second connecting portion (32) and described installing plate (35)；
Described first connecting portion (31) and described second connecting portion (32) are the cylinder being coaxially disposed；The rotation direction of described first elastic helix part (33) is identical with the rotation direction of described second elastic helix part (34)；Described first elastic helix part (33), described second elastic helix part (34) lead angle first become towards one end of described second connecting portion (32) by described first connecting portion (31) and diminish again greatly；The rotation direction of two described first elastic helix parts (33) is identical, and about described first connecting portion (31) axis axisymmetricly；The rotation direction of two described second elastic helix parts (34) is identical, and about described first connecting portion (31) axis axisymmetricly；Two described first elastic helix parts (33) form the first projection described second connecting portion (32) near the end face of described first connecting portion (31), two described second elastic helix parts (34) form the second projection described second connecting portion (32) near the end face of described first connecting portion (31), and described first projection is positioned at described second projection；
When described armature (22) promotes described second connecting portion (32) to move towards described spool (12), two described first elastic helix part (33) second elastic helix parts (34) described with two produce relative torsion to drive the rotary motion of described first connecting portion (31)。
2. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 1, it is characterised in that: the number of turns of described first elastic helix part (33) is identical with the number of turns of described second elastic helix part (34)。
3. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 2, it is characterised in that: the number of turns of described first elastic helix part (33) is 0.45 circle～0.48 circle。
4. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 1, it is characterized in that: described installing plate (35) includes the plate body (351) in square, and is opened in the through hole (352) at described plate body (351) center；Described first connecting portion (31) can in described through hole (352) stretching motion。
5. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 1, it is characterised in that: described 2D electro-hydraulic proportion reversing valve also includes the sleeve (4) being sleeved on the outside of described second elastic helix part (34)；One end of described sleeve (4) is fixing with described installing plate (35) to be connected, and the other end of described sleeve (4) is connected with described housing (21)。
6. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 5, it is characterised in that: described sleeve (4) is square structure；Described square structure offers through hole, and described second elastic helix part (34) is placed in described through hole。
7. formula pressure torsion coupling type 2D electro-hydraulic proportion reversing valve is reduced in displacement according to claim 1, it is characterised in that: described spool (12) is provided with low pressure hole (13), pressure hole (14) and experiences passage (15)；Wherein, described low pressure hole (13) experiences, with described, the high h of bow that passage (15) is overlapping1, described low pressure hole (13) experiences, with described, the bow-shaped area A that passage (15) is overlapping1It is expressed as according to low pressure hole (13) and the relational expression experienced between passage (15):
Described pressure hole (14) experiences, with described, the high h of bow that passage (15) is overlapping2, described pressure hole (14) experiences, with described, the bow-shaped area A that passage (15) is overlapping2It is expressed as according to pressure hole (14) and the relational expression experienced between passage (15):
rd: the radius of pressure hole (14) or low pressure hole (13)；
Rd: the shoulder radius of spool (12)；
R: the first elastic helix part (33) transmits the effective radius of power with the second elastic helix part (34)；
θm: when proportion electro-magnet (2), the corner displacement clockwise of spool (12)；
θv: when proportion electro-magnet (2), the corner displacement counterclockwise of spool (12)；
In formula:
xm: proportion electro-magnet (2) output level displacement；
xv: spool (12) moving displacement；
h0: pressure hole (14) or low pressure hole (13) initially bend height；
The lead angle of the β: the first elastic helix part (33) or the second elastic helix part (34)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070204.7U CN205331101U (en) | 2016-01-25 | 2016-01-25 | Formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070204.7U CN205331101U (en) | 2016-01-25 | 2016-01-25 | Formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331101U true CN205331101U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620070204.7U Withdrawn - After Issue CN205331101U (en) | 2016-01-25 | 2016-01-25 | Formula pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve is reduced in displacement |
Country Status (1)
| Country | Link |
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| CN (1) | CN205331101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465085A (en) * | 2016-01-25 | 2016-04-06 | 浙江大学城市学院 | Displacement reduction type 2D electro-hydraulic proportional reversing valve with compression-torsion couplers |
-
2016
- 2016-01-25 CN CN201620070204.7U patent/CN205331101U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465085A (en) * | 2016-01-25 | 2016-04-06 | 浙江大学城市学院 | Displacement reduction type 2D electro-hydraulic proportional reversing valve with compression-torsion couplers |
| CN105465085B (en) * | 2016-01-25 | 2017-09-01 | 浙江大学城市学院 | Displacement reduces formula pressure and turns round coupling type 2D electro-hydraulic proportion reversing valves |
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