CN209761889U - combined multi-function hydraulic valve core and valve - Google Patents
combined multi-function hydraulic valve core and valve Download PDFInfo
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- CN209761889U CN209761889U CN201920279513.9U CN201920279513U CN209761889U CN 209761889 U CN209761889 U CN 209761889U CN 201920279513 U CN201920279513 U CN 201920279513U CN 209761889 U CN209761889 U CN 209761889U
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Abstract
The utility model discloses a modular multimachine ability hydraulic pressure case, valve, case comprise two at least independent case parts, through cooperation structure or end face contact spacing and effect of each other, the case part both can whole syntropy remove after the combination, also can part independent action separately. The utility model has simple integral structure, low cost and good effect; when the traditional hydraulic valve is upgraded, the four-position four-way function can be realized only by modifying the original valve core structure to a certain degree, and the cost of upgrading and transforming the equipment is effectively reduced. The utility model discloses be decomposed into two independent spools with the spool from the middle part, this kind of structure need not reprocessing hole axle cooperation structure, does not need the concentricity in cooperation structure shaft hole, the processing degree of difficulty greatly reduced, and the structure is more simple, and the reliability is higher, and it is more convenient to upgrade.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic component and specifically relates to a modular multimachine ability hydraulic pressure case, valve.
Background
The traditional electro-hydraulic valve, electromagnetic valve, manual reversing valve, etc. are composed of valve body, valve core, spring, electromagnet or pilot control valve. The valve body is a carrier of the whole valve, the middle part is a cavity with a valve core moving, the inner wall of the cavity is excavated with a related oil body channel, the bottom part is an installation surface, and the installation surface is provided with oil outlets such as P, T, A, B. The valve core is an integral through rod, different grooves are processed on the valve core according to different functions, the valve core is pushed to move left and right in the cavity through electromagnets or pilot control oil at two ends, the control of three positions of a middle position and two ends can be realized, different covering and communication are formed according to the valve core, and therefore functions of a two-position two-way valve, a two-position three-way valve, a two-position four-way valve, a three-position four-way valve and the like are formed. Because the valve core can only be positioned at three positions, only three positions and three functions can be realized.
The cavity in the hydraulic cylinder body is respectively called a piston cavity and a rod cavity, the pressure area of the piston cavity is the inner diameter area of the whole cylinder body, the pressure area of the rod cavity is the annular area for removing the area of the piston rod, so the area of the piston cavity is larger than the area of the rod cavity, when the piston cavity is communicated with the hydraulic oil in the rod cavity, the pressure intensity of the two cavities is the same according to the Pascal law, the force of the piston cavity is larger than that of the rod cavity, the piston rod moves towards the direction of the rod cavity at the moment, the hydraulic oil in the rod cavity is forced into the piston cavity at the moment, the flow of the piston cavity is increased, the piston rod rapidly.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the limitation that the integral valve core structure of the traditional valve can only realize three-position three-function, breaks through the traditional mode, skillfully divides the original integral valve core into a plurality of valve cores, and the valve cores are mutually limited through sealing connection or end surface contact, so that the integral valve core can integrally move in the same direction, can also separately move in opposite directions, and can also respectively act independently, thereby realizing a four-position four-way hydraulic circuit.
The utility model discloses the technical scheme who adopts as follows:
A combined type multifunctional hydraulic valve core is provided with a large diameter for sealing an oil way and a small diameter for communicating adjacent oil ways, wherein a plurality of large diameters and small diameters are arranged at intervals; the valve core consists of at least two independent valve core parts, and the valve core parts can move integrally in the same direction or separately and independently act after being combined through mutual limiting and action of a matching structure or end surface contact.
As a further improvement of the above technical solution:
The matching structure is characterized in that a concave hole is formed in the end face of the first valve core, a connecting part is arranged on the second valve core, and the concave hole of the first valve core is in clearance fit with the connecting part of the second valve core.
The first valve core is provided with a concave hole on the large diameter of the end surface, and the small diameter of the end surface of the second valve core extends out of the connecting part.
the matching structure is characterized in that concave holes are formed in the end faces of the first valve cores, and two ends of the connecting rod are in clearance fit with the concave holes of the left first valve core and the right first valve core respectively; preferably, the left and right first spools have the same structure.
And an oil drainage hole is formed in the first valve core or the second valve core.
And a sealing device is arranged at the matching position of the matching structure.
the valve core consists of two third valve cores, and the two third valve cores are directly contacted through end binding surfaces; preferably, the left and right third spools have the same structure, and the abutting surfaces are mirror images.
And a plunger is arranged between the outer end of the third valve core and the spring.
The valve using the combined type multifunctional hydraulic valve core is characterized in that an oil duct A, an oil duct P, an oil duct B and an oil duct T are arranged on a valve body, and a middle matching structure or a contact end face of the combined valve core is positioned in the middle of a valve core hole of the valve body, preferably in the position of the oil duct P.
As a further improvement of the above technical solution:
When the two ends of the combined valve core are in a compressed state after being combined, the A, B ports are not communicated with each other, and the P, A, B ports are communicated after the relative movement is prolonged.
The valve body is provided with a control valve, preferably a control valve YA1 and a control valve YA2 are arranged at the outer ends of the valve covers at the two ends, or a two-way control valve is arranged at the top of the valve body; the control valve can be of an electric control type, a manual type or a hydraulic type.
A control method for a combined multi-function hydraulic valve comprises four functions:
o-type function position: the control valve enables two ends of the combined valve core to be in positive pressure, all valve core parts of the combined valve core are compressed into a whole, and the oil duct P, the oil duct A, the oil duct B and the oil duct T are not communicated with each other at the moment;
P-type functional position: the control valve is disconnected to enable the two ends of the combined valve core to be at zero pressure, all valve core components of the combined valve core move towards two sides in a split mode, and at the moment, the oil duct P, the oil duct A and the oil duct B are connected to achieve a differential function;
Parallel functional position: one side of the control valve is connected and the other side of the control valve is disconnected, so that the end a of the combined valve core is in positive pressure, the end B of the combined valve core is in zero pressure, the oil duct P is connected with the oil duct A, and the oil duct B is connected with the oil duct T;
Cross functional position: one side of the control valve is connected and the other side of the control valve is disconnected, so that the B end of the combined valve core is in positive pressure, the a end of the combined valve core is in zero pressure, the oil duct P is connected with the oil duct B, and the oil duct A is connected with the oil duct T.
the utility model has the advantages as follows:
The utility model discloses an on the basis of traditional valve body structure, be two at least spools with the integrative case components of a whole that can function independently in the middle, adjacent case part is mutually supported or is spacing each other. The combined valve core can move integrally in the same direction, can also move separately and respectively in the opposite directions, and can also move independently. For example, the valve core moves reversely at the same time, and P, A, B three cavities are communicated to realize the differential function.
the utility model has simple integral structure, low cost and good effect; when upgrading traditional hydrovalve, only do certain modification to original case structure and can realize the quadbit cross function, need not additionally to set up external control subassembly, effectively reduced the cost of equipment upgrading transformation.
The utility model discloses with integrative case split for both sides case and middle part connecting rod, both sides case structure is the same, can form the standard component and produce manufacturing, stock and sale, effectively reduces the stock pressure of production stock, and also need not distinguish in production deliberately, avoids the assembly error.
The utility model discloses utilize the oil pressure of the different cross-sections of case to realize integrative motion, relative motion or the independent motion of combination case to set up the draining hole at the case middle part, prevent to cause the unable action of case because of the trapped oil.
The utility model discloses be two independent spools with the case from the middle part decomposition, this kind of structure need not to reprocess hole axle cooperation structure, does not need the concentricity in cooperation structure shaft hole, the processing degree of difficulty greatly reduced, and can not produce the oil circuit and reveal also need not to set up the draining hole, and the structure is more simple, and the reliability is higher, and it is more convenient to upgrade.
drawings
Fig. 1 is a sectional view of a first embodiment of the present invention.
Fig. 2 is a functional cross-sectional view of a differential mechanism according to a first embodiment of the present invention.
Fig. 3 is a sectional view of the first embodiment of the present invention.
fig. 4 is a cross sectional view of the first embodiment of the present invention.
Fig. 5 is a perspective view of the valve core assembly of the first embodiment.
Fig. 6 is a perspective view of the first valve spool of the first embodiment.
fig. 7 is a cross-sectional view of the first valve spool of the first embodiment.
Fig. 8 is a perspective view of the second spool of the first embodiment.
fig. 9 is a sectional view of the second spool in the first embodiment.
Fig. 10 is a left side view of the second valve spool of the first embodiment.
Fig. 11 is a sectional view of a second embodiment of the present invention.
Fig. 12 is a cross-sectional view of a second embodiment connecting rod.
Fig. 13 is a left side view of the connecting rod of the second embodiment.
Fig. 14 is a sectional view of the third embodiment.
Fig. 15 is a perspective view of a valve core assembly of the third embodiment.
Fig. 16 is a sectional view of the valve cartridge of the third embodiment.
Fig. 17 is a sectional view of the fourth embodiment.
Fig. 18 is a hydraulic schematic diagram of the present invention.
In the figure: 1. A first valve spool; 2. a second valve core; 3. a valve body; 4. a spring; 5. a valve cover; 6. an oil drainage hole; 7. concave holes; 8. a connecting portion; 9. large diameter; 10. a minor diameter; 11. a connecting rod; 12. A binding face; 13. a plunger; 14. an oil cylinder; 15. a third valve core; an oil duct A; an oil passage P; an oil passage B; an oil passage T; control valve YA 1; control valve YA 2; type 1#0 positional function; 2# P-type position function; 3# parallel position function; 4# cross location function; a terminal; b terminal.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
The first embodiment is as follows:
As fig. 1, 18 shows, the utility model discloses a be equipped with oil duct A on the valve body 3, oil duct P, oil duct B and oil duct T, through the fixed valve gap 5 of fastener on the terminal surface of valve body 3 both sides, valve gap 5 is equipped with the oil duct of connection control valve YA1 and control valve YA2, control valve YA1 can be fixed respectively with control valve YA2 and set up in valve gap 5 outer end, also can fix and set up in the 3 tops of valve body, can place again in the 3 outsides of valve body, the control valve can be automatically controlled formula, manual formula or the formula of surging. Springs 4 are respectively arranged between the bottom surface of the concave hole at the inner end of the valve cover 5 and the outer end of the valve core assembly. The valve core component at least comprises two valve core parts, and the valve core parts are matched with each other and then are installed in the valve cavity of the valve body 3 and can slide left and right in the inner hole.
As shown in fig. 5 to 10, the valve core assembly of this embodiment is composed of a first valve core 1 and a second valve core 2, the first valve core 1 and the second valve core 2 are both provided with a plurality of major diameters 9 and minor diameters 10, the major diameter 9 of the outer end of the first valve core 1 is provided with a concave hole 7, the minor diameter 10 of the outer end of the second valve core 2 extends out of a connecting portion 8 and is in clearance fit with the concave hole 7 of the first valve core 1, a seal is provided at the fitting portion, an annular groove may be provided on the outer circumferential surface of the connecting portion 8, and a flexible seal is provided in the groove; the clearance fit value can also be precisely machined, and sealing is realized by utilizing precise fit. When one end of the valve core assembly is pressed, the first valve core 1 and the second valve core 2 do not move relatively, and the two valve cores integrally slide left and right along the same direction, so that the function of a common sliding valve can be realized. When the two ends of the valve core part are unloaded, the first valve core 1 and the second valve core 2 move relatively, the first valve core 1 and the second valve core 2 move away in opposite directions, and when the valve core moves to the limit position, the head part of the connecting part 8 of the outer end small diameter 10 of the second valve core 2 is still always kept in the concave hole 7 of the first valve core 1, and the sealing function between the first valve core 1 and the second valve core is kept. In this embodiment, as shown in fig. 1, the first valve element 1 is provided with an oil drainage hole 6, the oil drainage hole 6 is located at the bottom of the concave hole 7, and the oil drainage hole 6 is a through central through hole for draining hydraulic oil in the matching cavity, so as to prevent the valve element from being unable to move due to oil trapping. The drain hole 6 may also be provided in the second spool 2, but only in one spool part, the other spool part being free of drain holes.
The utility model discloses a theory of operation and working process as follows:
As shown in fig. 18, the present invention can realize the four-position four-way principle position function, including 1# O position function, 2# P position function, 3# parallel position function, and 4# cross position function. The operation requirement conditions for each functional position are as follows:
1# O type function position: referring to fig. 1, when the control valve YA1 and the control valve YA2 are in a high-pressure oil conducting state at the same time, the control oil at the two ends of the valve core assembly is in a positive pressure state, the springs 4 at the a end and the B end are reset, the pressures at the two ends of the valve core assembly are in a balanced state, and the first valve core 1 and the second valve core 2 of the valve core assembly are pressed mutually and stabilized at the middle functional position under the action of the spring forces at the two sides, that is, the oil passage P, the oil passage a, the oil passage B and the oil passage T are not.
2# P type function position: referring to fig. 2, when the control valve YA1 and the control valve YA2 are in an unloading oil return state at the same time, control oil at two ends of the valve core assembly is zero pressure, pressure of fluid in the oil passage P pushes the first valve core 1 and the second valve core 2 of the valve core assembly to move towards two ends respectively, the valve cores at two sides overcome spring forces at the end a and the end B respectively, the moving directions are opposite and away from each other and reach limiting positions at two ends, at this time, the oil passage P, the oil passage a and the oil passage B are communicated to realize a differential function, and oil of the oil cylinder 14 flows back to the rodless cavity from the rod cavity. The oil duct T is not communicated with the oil duct P, the oil duct A and the oil duct B.
3# parallel function position: referring to fig. 3, when the control valve YA2 is in the high-pressure oil conducting state, the control oil at the end a of the valve core assembly is in a positive pressure state, the control valve YA1 is in the unloading oil return state, the control oil at the end B of the valve core assembly is in a zero pressure state, the valve core assembly overcomes the spring force at the end B, the first valve core 1 and the second valve core 2 of the valve core assembly are pressed and move in the same direction, and are pushed to the end B from a for mechanical limiting, at this time, the oil passage P is communicated with the oil passage a, and the oil passage B is communicated with the oil passage T.
4# Cross function position: referring to fig. 4, when the control valve YA1 is in the high-pressure oil conducting state, the control oil at the B end of the valve core assembly is in the positive pressure state, the control valve YA2 is in the unloading oil return state, the control oil at the a end of the valve core assembly is in the zero pressure state, the valve core assembly overcomes the spring force of the a end, the first valve core 1 and the second valve core 2 of the valve core assembly are pressed and move in the same direction, the first valve core and the second valve core are pushed to the a end from the B end for mechanical limiting, the oil passage P is communicated with the oil passage B, the oil passage a is.
Example two:
As shown in fig. 11 to 13, the valve core assembly of the present invention can also be composed of two first valve cores 1 and a connecting rod 11, the two ends of the connecting rod 11 are respectively in clearance fit with the concave hole 7 of the outer end major diameter 9 of the first valve core 1, and the matching parts are respectively sealed. When one end of the valve core assembly is pressed, the two first valve cores 1 and the connecting rod 11 do not move relatively, the two first valve cores and the connecting rod integrally slide left and right in the same direction, and the function of a common sliding valve can be realized at the moment. When the two ends of the valve core assembly are unloaded, the two first valve cores 1 and the connecting rod 11 respectively move relatively, the two first valve cores 1 move away from the connecting rod 11 in opposite directions, and when the two first valve cores move to the extreme position, the connecting rod 11 is still always positioned in the concave hole 7 of the first valve core 1 and is not separated, and the sealing function of the matched position is kept. An oil drainage hole 6 is arranged on the first valve core 1.
Example three:
As shown in fig. 14 to 16, the valve core assembly of the present invention may also include two third valve cores 15, the third valve cores 15 are provided with a plurality of major diameters 9 and minor diameters 10, the outer end face of one end minor diameter 10 is a joint face 12, and the joint face 12 is located in the middle of the valve core hole in the normal assembly state. When the outer end of the valve core assembly is pressed, the abutting surfaces 12 of the two third valve cores 15 are tightly abutted, the two third valve cores do not move relatively and integrally slide left and right along the same direction, and the function of a common sliding valve can be realized. When the two ends of the valve core assembly are unloaded, the two third valve cores 15 move away from the limiting positions at the two ends along opposite directions, and the binding surfaces 12 of the two valve cores are separated and do not contact. The third spool 15 of the present embodiment does not need to be provided with the drain hole 6. The shape of the third valve core 15 on the two sides is the same, and the existing single valve core is cut in the middle during upgrading and transformation, so that upgrading is convenient and fast.
Example four:
As shown in fig. 17, as a preferable solution of the third embodiment, plungers 13 may be further provided between the outer ends of the two third spools 15 and the spring 4, an area of end surfaces of the plungers 13 is larger than an area of end surfaces of the outer ends of the second spool 2, and both ends of the spool assembly bear the pressure of the spring 4 and the control oil pressure through the plungers 13, so that the spool assembly is more stable and reliable, and the spool is located at the intermediate position in the case that the system has no pressure or the controlled chambers at both ends have pressure.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.
Claims (14)
1. a combined type multifunctional hydraulic valve core is provided with a large diameter (9) for sealing an oil way and a small diameter (10) for communicating adjacent oil ways, wherein the large diameter (9) and the small diameter (10) are arranged at intervals; the method is characterized in that: the valve core consists of at least two independent valve core parts, and the valve core parts can move integrally in the same direction or separately and independently act after being combined through mutual limiting and action of a matching structure or end surface contact.
2. The combined multi-function hydraulic valve cartridge of claim 1, wherein: the matching structure is characterized in that a concave hole (7) is formed in the end face of the first valve core (1), a connecting portion (8) is formed in the second valve core (2), and the concave hole (7) of the first valve core (1) is in clearance fit with the connecting portion (8) of the second valve core (2).
3. The combined multi-function hydraulic valve cartridge of claim 2, wherein: the first valve core (1) is provided with a concave hole (7) on the large diameter (9) of the end surface, and the small diameter (10) of the end surface of the second valve core (2) extends out of a connecting part (8).
4. The combined multi-function hydraulic valve cartridge of claim 1, wherein: the matching structure is characterized in that concave holes (7) are formed in the end face of the first valve core (1), and the two ends of the connecting rod (11) are in clearance fit with the concave holes (7) of the left first valve core and the right first valve core (1) respectively.
5. The combined multi-function hydraulic valve cartridge of claim 4, wherein: the left first valve core and the right first valve core (1) are completely identical in structure.
6. The combined multi-function hydraulic valve cartridge according to any one of claims 2 to 4, wherein: and an oil drainage hole (6) is formed in the first valve core (1) or the second valve core (2).
7. The combined multi-function hydraulic valve cartridge according to any one of claims 2 to 4, wherein: and a sealing device is arranged at the matching position of the matching structure.
8. the combined multi-function hydraulic valve cartridge of claim 1, wherein: the valve core is composed of two third valve cores (15), and the two third valve cores (15) are in direct contact through end abutting surfaces (12).
9. The combined multi-function hydraulic valve cartridge of claim 8, wherein: the left and right third valve cores (15) have the same structure and are in mirror symmetry with the abutting surface (12).
10. The combined multi-function hydraulic valve cartridge according to claim 8 or 9, wherein: and a plunger (13) is arranged between the outer end of the third valve core (15) and the spring (4).
11. A valve using the combined type multi-function hydraulic valve core according to claim 1, wherein an oil passage a, an oil passage P, an oil passage B and an oil passage T are arranged on a valve body (3), and the valve is characterized in that: the middle matching structure or the contact end surface of the combined valve core is positioned in the middle of the valve core hole of the valve body; when the two ends of the combined valve core are in a compressed state after being combined, the A, B ports are not communicated with each other, and the P, A, B ports are communicated after the relative movement is prolonged.
12. The valve of claim 11, wherein: and the middle matching structure or the contact end surface of the combined valve core is positioned at the position of the oil passage P.
13. The valve of claim 11, wherein: the valve body (3) is provided with a control valve; the control valve can be of an electric control type, a manual type or a hydraulic type.
14. The valve of claim 13, wherein: the outer ends of the two end valve covers (5) are provided with a control valve YA1 and a control valve YA2, or a two-way control valve arranged on the top of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920279513.9U CN209761889U (en) | 2018-12-26 | 2019-03-06 | combined multi-function hydraulic valve core and valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203751X | 2018-12-26 | ||
| CN201822203751 | 2018-12-26 | ||
| CN201920279513.9U CN209761889U (en) | 2018-12-26 | 2019-03-06 | combined multi-function hydraulic valve core and valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209761889U true CN209761889U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920279513.9U Expired - Fee Related CN209761889U (en) | 2018-12-26 | 2019-03-06 | combined multi-function hydraulic valve core and valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209761889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365312A (en) * | 2018-12-26 | 2020-07-03 | 鼎斯（上海）液压科技有限公司 | Combined type multifunctional hydraulic valve core, valve and control method |
-
2019
- 2019-03-06 CN CN201920279513.9U patent/CN209761889U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365312A (en) * | 2018-12-26 | 2020-07-03 | 鼎斯（上海）液压科技有限公司 | Combined type multifunctional hydraulic valve core, valve and control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20210306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |