CN205226468U - Six five -way logical choice valves - Google Patents
Six five -way logical choice valves Download PDFInfo
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- CN205226468U CN205226468U CN201521045830.2U CN201521045830U CN205226468U CN 205226468 U CN205226468 U CN 205226468U CN 201521045830 U CN201521045830 U CN 201521045830U CN 205226468 U CN205226468 U CN 205226468U
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- valve body
- oil
- oil groove
- valve rod
- described valve
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Abstract
The utility model discloses a six five -way logical choice valves, which comprises the following components: a valve body, installing axial displacement's valve rod in the valve body, being equipped with seven logical oil grooves respectively in the valve body with on the valve rod, the valve body oil groove has strict logic with the valve rod oil groove, through these logical oil circuit option functions of realizing this selection valve, be equipped with first oil inlet, second oil inlet, oil return opening, first oil -out and second oil -out on the valve body, the drive is installed to valve body one end the valve rod control mechanism that the valve rod removed, valve rod return means is installed to the valve body other end, the utility model discloses a logical choice valve simple structure, overall layout is nimble, transposition reaction sensitivity, the equipment reliability is high, and makes and maintain the convenience.
Description
Technical field
The utility model relates to hydraulic system technical field, particularly a kind of six five-way logic selector valves.
Background technique
Commutation is widely used in the various fields such as engineering machinery, farm machinery, handling machinery, environmental sanitation machinery, selector valve is of a great variety in the market, transposition reaction insufficient sensitivity, and single selector valve can not work in two oil circuit oil supply system, and according to loaded work piece situation, the connection of suitable logic oil circuit can not be realized.
Model utility content
Technical problem to be solved in the utility model is to provide that a kind of structure is simple, integral layout is flexible, transposition reaction is sensitive, equipment reliability is high and manufactures six five-way logic selector valves easy to maintenance.
For solving the problems of the technologies described above, the technical solution of the utility model is: six five-way logic selector valves, comprise valve body, the valve rod moved axially is installed in described valve body, seven logic oil grooves are respectively equipped with in described valve body with on described valve rod, logic oil groove in described valve body and the logic oil groove on described valve rod have strict logic, by the oil circuit selection function of these these selector valves of logic realization, described valve body is provided with the first filler opening, second filler opening, return opening, first oil outlet and the second oil outlet, described valve body one end is provided with the valve rod control mechanism driving described valve rod movement, the described valve body the other end is provided with valve rod returning device.
As the preferred technological scheme of one, in described valve body, arrangement is provided with seven logic oil grooves, comprise valve body first oil groove, valve body second oil groove, valve body the 3rd oil groove, valve body the 4th oil groove, valve body the 5th oil groove, valve body the 6th oil groove and valve body the 7th oil groove, described valve body first oil groove and described valve body the 5th oil groove bridge joint shape component oil oil duct, described valve body the 4th oil groove and described valve body the 7th oil groove bridge joint form oil return oil duct.
As the preferred technological scheme of one, described valve body second oil groove top has described first oil outlet, described valve body the 5th oil groove top has described second oil outlet, described valve body the 3rd oil groove bottom has described first filler opening, described valve body the 4th oil groove bottom has described return opening, and described valve body the 6th oil groove bottom has described second filler opening.
As the preferred technological scheme of one, described valve rod is provided with seven logic oil grooves, comprise valve rod first oil groove, valve rod second oil groove, valve rod the 3rd oil groove, valve rod the 4th oil groove, valve rod the 5th oil groove, valve rod the 6th oil groove and valve rod the 7th oil groove, valve rod cavity is provided with in described valve rod, the outer surface of described valve rod is divided into seven shaft shoulders by seven on described valve rod described logic oil grooves, and the described shaft shoulder comprises first shaft shoulder, second shaft shoulder, the 3rd shaft shoulder, the 4th shaft shoulder, the 5th shaft shoulder, the 6th shaft shoulder and the 7th shaft shoulder.
As the preferred technological scheme of one, first shaft shoulder of described valve rod first oil groove side is provided with 2-4 axial symmetrical radial circular port, and described radial circular port is communicated with described valve rod cavity; The 5th shaft shoulder near described valve rod the 4th oil groove is provided with 2-4 axially symmetrical radial circular port and 2-4 axial symmetrical radial compensating groove, stagger alternate with described compensating groove of described circular port is arranged, and described radial circular port is communicated with described valve rod cavity; The 7th shaft shoulder near described valve rod the 7th oil groove is provided with 2-4 axially symmetrical radial circular port and 2-4 axial symmetrical radial compensating groove, stagger alternate with described compensating groove of described circular port is arranged, and described radial circular port is communicated with described valve rod cavity.
As the preferred technological scheme of one, described valve rod control mechanism comprises solenoid-operated proportional pilot valve, displacement transducer and piston mechanism, and described solenoid-operated proportional pilot valve is arranged on one end of described valve body.
As the preferred technological scheme of one, described solenoid-operated proportional pilot valve comprises coil, housing, proportion electro-magnet, spool and power transmission spring, described coil is arranged on housing two ends, described proportion electro-magnet is arranged in described coil, the right-hand member of described proportion electro-magnet is provided with power transmission spring, be provided with described spool in described power transmission spring, described spool is arranged in described housing cavity, and the left end of described spool is connected with described proportion electro-magnet.
As the preferred technological scheme of one, described valve rod returning device comprises the bonnet be connected with described valve body one end by bearing pin, Returnning spring and spring seat is provided with in described bonnet, described spring is located on spring seat, described spring seat comprises left end spring seat and right-hand member spring seat, described left end spring seat is connected with described valve rod, and described right-hand member spring seat is connected with described bonnet.
Owing to have employed technique scheme, six five-way logic selector valves, comprise valve body, the valve rod moved axially is installed in described valve body, seven logic oil grooves are respectively equipped with in described valve body with on described valve rod, logic oil groove in described valve body and the logic oil groove on described valve rod have strict logic, by the oil circuit selection function of these these selector valves of logic realization, described valve body is provided with the first filler opening, second filler opening, return opening, first oil outlet and the second oil outlet, described valve body one end is provided with the valve rod control mechanism driving described valve rod movement, the described valve body the other end is provided with valve rod returning device, logic selector valve structure of the present utility model is simple, and integral layout is flexible, and transposition reaction is sensitive, and equipment reliability is high, and manufactures easy to maintenance.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is that six five-way logic selector valve valve rods of the present utility model are in neutral position structural representation for the moment;
Fig. 2 is six five-way logic selector valve valve body structure schematic diagram of the present utility model;
Fig. 3 is six five-way logic selector valve stem structure schematic diagram of the present utility model;
Fig. 3 a be in Fig. 3 A-A to sectional view;
Fig. 3 b be in Fig. 3 B-B to sectional view;
Fig. 3 c be in Fig. 3 C-C to sectional view;
Fig. 4 is six five-way logic selector valve working principle schematic diagram of the present utility model;
Fig. 5 is the working state schematic representation of valve rod of the present utility model left side when sliding to logic oil groove positions two;
Fig. 6 is the working state schematic representation of valve rod of the present utility model left side when sliding to logic oil groove positions three;
Fig. 7 is the working state schematic representation of valve rod of the present utility model left side when sliding to logic oil groove positions four;
Fig. 8 is the working state schematic representation of valve rod of the present utility model left side when sliding to logic oil groove positions five;
Fig. 9 is the working state schematic representation of valve rod of the present utility model left side when sliding to logic oil groove positions six;
In figure: 1-valve body; 2-valve rod; 3-oil return oil duct; 4-bonnet; 5-Returnning spring; 6-divides oil duct; 7-solenoid-operated proportional pilot valve; 8-displacement transducer; 9-piston mechanism; 10-first shaft shoulder; 11-the 5th shaft shoulder; 12-the 7th shaft shoulder; 13-valve rod cavity; 14-circular port; 15-compensating groove; A-first oil outlet; B-second oil outlet; P1-first filler opening; P2-second filler opening; T-return opening; 1F-valve body first oil groove; 2F-valve body second oil groove; 3F-valve body the 3rd oil groove; 4F-valve body the 4th oil groove; 5F-valve body the 5th oil groove; 6F-valve body the 6th oil groove; 7F-valve body the 7th oil groove; 1C-valve rod first oil groove; 2C-valve rod second oil groove; 3C-valve rod the 3rd oil groove; 4C-valve rod the 4th oil groove; 5C-valve rod the 5th oil groove; 6C-valve rod the 6th oil groove; 7C-valve rod the 7th oil groove.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.In the following detailed description, the mode only by illustrating describes some one exemplary embodiment of the present utility model.Undoubtedly, those of ordinary skill in the art can recognize, when not departing from spirit and scope of the present utility model, can revise by various different mode to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
As shown in Figure 1, six five-way logic selector valves, comprise valve body 1, the valve rod 2 moved axially is installed in described valve body 1, multiple logic oil groove is provided with in described valve body 1, as shown in Figure 2, in described valve body 1, arrangement is provided with seven logic oil grooves, comprise valve body first oil groove 1F, valve body second oil groove 2F, valve body the 3rd oil groove 3F, valve body the 4th oil groove 4F, valve body the 5th oil groove 5F, valve body the 6th oil groove 6F and valve body the 7th oil groove 7F, described valve body first oil groove 1F and described valve body the 5th oil groove 5F bridge joint shape component oil oil duct 6, described valve body the 4th oil groove 4F and described valve body the 7th oil groove 7F bridge joint form oil return oil duct 3.Described valve body 1 is provided with the first oil inlet P 1, second oil inlet P 2, oil return inlet T, the first oil outlet A and the second oil outlet B, described valve body second oil groove 2F top has described first oil outlet A, described valve body the 5th oil groove 5F top has described second oil outlet B, described valve body the 3rd oil groove 3F bottom has described first oil inlet P 1, described valve body the 4th oil groove 4F bottom has described oil return inlet T, and described valve body the 6th oil groove 6F bottom has described second oil inlet P 2.
Described valve rod 2 is provided with multiple logic oil groove, as shown in Figure 3, described valve rod 2 is provided with seven logic oil grooves, comprise valve rod first oil groove 1C, valve rod second oil groove 2C, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve rod the 5th oil groove 5C, valve rod the 6th oil groove 6C and valve rod the 7th oil groove 7C, valve rod cavity 13 is provided with in described valve rod 2, the outer surface of described valve rod 2 is divided into seven shaft shoulders by seven described logic oil grooves of described valve rod 2, the described shaft shoulder comprises first shaft shoulder 10, second shaft shoulder, 3rd shaft shoulder, 4th shaft shoulder, 5th shaft shoulder 11, 6th shaft shoulder and the 7th shaft shoulder.As shown in Figure 3 a, first shaft shoulder 10 of described valve rod first oil groove 1C side is provided with 2-4 axial symmetrical radial circular port 14, and described radial circular port 14 is communicated with described valve rod cavity 13; As shown in Figure 3 b, the 5th shaft shoulder 11 near described valve rod the 4th oil groove 4C is provided with 2-4 axially symmetrical radial circular port 14 and 2-4 axial symmetrical radial compensating groove 15, and described stagger alternate with described compensating groove 15 of circular port 14 is arranged; Described radial circular port 14 is communicated with described valve rod cavity 13; As shown in Figure 3 c, the 7th shaft shoulder near described valve rod the 7th oil groove 7C is provided with 2-4 axially symmetrical radial circular port 14 and 2-4 axial symmetrical radial compensating groove 15, and described stagger alternate with described compensating groove 15 of circular port 14 is arranged; Described radial circular port 14 is communicated with described valve rod cavity 13.Valve body oil groove and valve rod oil groove have strict logic, by the oil circuit selection function of these these selector valves of logic realization,
Described valve body 1 one end is provided with the valve rod control mechanism driving the movement of described valve rod 2, described valve rod control mechanism comprises solenoid-operated proportional pilot valve 7, displacement transducer 8 and piston mechanism 9, described solenoid-operated proportional pilot valve 7 is arranged on one end of described valve body 1, described solenoid-operated proportional pilot valve 7 comprises coil, housing, proportion electro-magnet, spool and power transmission spring, described coil is arranged on housing two ends, described proportion electro-magnet is arranged in described coil, the right-hand member of described proportion electro-magnet is provided with power transmission spring, described spool is provided with in described power transmission spring, described spool is arranged in described housing cavity, the left end of described spool is connected with described proportion electro-magnet.
Described valve body 1 the other end is provided with valve rod returning device, described valve rod returning device comprises the bonnet 4 be connected with described valve body 1 one end by bearing pin, Returnning spring 5 and spring seat is provided with in described bonnet 4, described spring is located on spring seat, described spring seat comprises left end spring seat and right-hand member spring seat, described left end spring seat is connected with described valve rod 2, and described right-hand member spring seat is connected with described bonnet 4.
The fundamental diagram of six five-way logic selector valves as shown in Figure 4.
Operating principle of the present utility model is:
1, when Fig. 1 is solenoid-operated proportional pilot valve 7 electromagnetic coil no electric circuit, valve rod 2 is in neutral position, now fluid flows into oil return inlet T from the first oil inlet P 1 by 2-4 axial symmetrical radial compensating groove 15, valve body oil groove 4F on valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, the 5th shaft shoulder 11, and fluid flows back to fuel tank from oil return inlet T; Fluid flows into oil return oil duct 3 from the second oil inlet P 2 by 2-4 axial symmetrical compensating groove 15 on valve body the 6th oil groove 6F, valve rod the 5th oil groove 5C, valve rod the 6th oil groove 6C and the 7th shaft shoulder 12, and fluid flows back to fuel tank from oil return oil duct 3 by oil return inlet T; First oil outlet A, the second oil outlet B are not respectively communicated with, and hydraulic system unloads, and executive component is failure to actuate;
2, as shown in Figure 5, connect solenoid-operated proportional pilot valve 7 coil power, the action of solenoid-operated proportional pilot valve 7 spool, under the effect of pressure oil, valve rod 2 moves to left, fluid flows into oil return inlet T from the first oil inlet P 1 by 2-4 axial symmetrical radial compensating groove 15 on valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, the 5th shaft shoulder 11, and fluid flows back to fuel tank from oil return inlet T; Fluid flows into the second oil outlet B from the second oil inlet P 2 by valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F, and the first oil outlet A is not communicated with;
3, as Fig. 6, solenoid-operated proportional pilot valve 7 coil electricity, under the control of input current, the action of solenoid-operated proportional pilot valve 7 spool, move to left at pressure oil effect lower valve rod 2, fluid passes through valve body the 3rd oil groove 3F from the first oil inlet P 1, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve body second oil groove 2F flows into the first oil outlet A, when hydraulic fluid port B connect fluid needed for subtense angle be greater than hydraulic fluid port A connect subtense angle time, fluid passes through valve body the 3rd oil groove 3F from from the first oil inlet P 1, and pass through by 2-4 axial symmetrical radial hole 14 on the 5th shaft shoulder 11, valve rod cavity 13, on first shaft shoulder 10, the path of 2-4 axial symmetrical radial hole 14 bridge joint formation enters point oil duct 6, fluid flows into the second oil outlet B by a point oil duct 6, fluid flows into the first oil outlet B from the second oil inlet P 2 by valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F, oil return inlet T is closed,
4, as shown in Figure 7, valve rod 2 continues to move to left under hydraulic oil effect, and fluid enters the first oil outlet A from the first oil inlet P 1 by valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve body second oil groove 2F; Fluid flows into the second oil outlet B from the second oil inlet P 2 by valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F; Fluid flows into the second oil outlet B from the first oil inlet P 1 by the symmetrical radial hole 14 of 2-4 axis on 2-4 axially symmetrical radial hole 14, valve rod cavity 13, the 7th shaft shoulder 12 on valve body the 3rd oil groove 3F, the 5th shaft shoulder 11, valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F; Fluid flows into the first oil outlet A from the second oil inlet P 2 by 2-4 axially symmetrical radial hole 14, valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve body second oil groove 2F on 2-4 axially symmetrical radial hole 14, valve rod cavity 13, the 5th shaft shoulder 11 on valve body the 6th oil groove 6F, the 7th shaft shoulder, and oil return inlet T is closed;
5, working state as shown in Figure 8, fluid flows into the second oil outlet B from the first oil inlet P 1 by the symmetrical radial hole 14 of 2-4 axis on 2-4 axially symmetrical radial hole 14, valve rod cavity 13, the 7th shaft shoulder 12 on valve rod the 3rd oil groove 3F, the 5th shaft shoulder 11, valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F; Second oil inlet P 2 flows into the second oil outlet B by valve body the 6th oil groove 6F, valve rod the 6th oil groove 6C, valve rod the 7th oil groove 7C, valve body the 5th oil groove 5F, and the first oil outlet A is not respectively communicated with oil return inlet T;
6, working state as shown in Figure 9, fluid flows into the first oil outlet A from the first oil inlet P 1 by valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve body second oil groove 2F; Fluid flows into the first oil outlet A from the second oil inlet P 2 by 2-4 axially symmetrical radial hole 14, valve body the 3rd oil groove 3F, valve rod the 3rd oil groove 3C, valve rod the 4th oil groove 4C, valve body second oil groove 2F on 2-4 axially symmetrical radial hole 14, valve rod cavity 13, the 5th shaft shoulder 11 on valve body the 6th oil groove 6F, the 7th shaft shoulder 12, the second oil outlet B and oil return inlet T closed.
The object that suitable logic oil circuit selected by hydrovalve is reached by above-mentioned control.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. six five-way logic selector valves, it is characterized in that: comprise valve body, the valve rod moved axially is installed in described valve body, seven logic oil grooves are respectively equipped with in described valve body with on described valve rod, logic oil groove in described valve body and the logic oil groove on described valve rod have strict logic, by the oil circuit selection function of these these selector valves of logic realization, described valve body is provided with the first filler opening, second filler opening, return opening, first oil outlet and the second oil outlet, described valve body one end is provided with the valve rod control mechanism driving described valve rod movement, the described valve body the other end is provided with valve rod returning device.
2. six five-way logic selector valves as claimed in claim 1, it is characterized in that: in described valve body, arrangement is provided with seven logic oil grooves, comprise valve body first oil groove, valve body second oil groove, valve body the 3rd oil groove, valve body the 4th oil groove, valve body the 5th oil groove, valve body the 6th oil groove and valve body the 7th oil groove, described valve body first oil groove and described valve body the 5th oil groove bridge joint shape component oil oil duct, described valve body the 4th oil groove and described valve body the 7th oil groove bridge joint form oil return oil duct.
3. six five-way logic selector valves as claimed in claim 2, it is characterized in that: described valve body second oil groove top has described first oil outlet, described valve body the 5th oil groove top has described second oil outlet, described valve body the 3rd oil groove bottom has described first filler opening, described valve body the 4th oil groove bottom has described return opening, and described valve body the 6th oil groove bottom has described second filler opening.
4. six five-way logic selector valves as claimed in claim 1, it is characterized in that: described valve rod is provided with seven logic oil grooves, comprise valve rod first oil groove, valve rod second oil groove, valve rod the 3rd oil groove, valve rod the 4th oil groove, valve rod the 5th oil groove, valve rod the 6th oil groove and valve rod the 7th oil groove, valve rod cavity is provided with in described valve rod, the outer surface of described valve rod is divided into seven shaft shoulders by seven on valve rod described logic oil grooves, and the described shaft shoulder comprises first shaft shoulder, second shaft shoulder, the 3rd shaft shoulder, the 4th shaft shoulder, the 5th shaft shoulder, the 6th shaft shoulder and the 7th shaft shoulder.
5. six five-way logic selector valves as claimed in claim 4, is characterized in that: first shaft shoulder of described valve rod first oil groove side is provided with 2-4 axial symmetrical radial circular port, and described radial circular port is communicated with described valve rod cavity; The 5th shaft shoulder near described valve rod the 4th oil groove is provided with 2-4 axially symmetrical radial circular port and 2-4 axial symmetrical radial compensating groove, stagger alternate with described compensating groove of described circular port is arranged, and described radial circular port is communicated with described valve rod cavity; The 7th shaft shoulder near described valve rod the 7th oil groove is provided with 2-4 axially symmetrical radial circular port and 2-4 axial symmetrical radial compensating groove, and stagger alternate with described compensating groove of described circular port is arranged; Described radial circular port is communicated with described valve rod cavity.
6. six five-way logic selector valves as claimed in claim 1, is characterized in that: described valve rod control mechanism comprises solenoid-operated proportional pilot valve, displacement transducer and piston mechanism, and described solenoid-operated proportional pilot valve is arranged on one end of described valve body.
7. six five-way logic selector valves as claimed in claim 6, it is characterized in that: described solenoid-operated proportional pilot valve comprises coil, housing, proportion electro-magnet, spool and power transmission spring, described coil is arranged on housing two ends, described proportion electro-magnet is arranged in described coil, the right-hand member of described proportion electro-magnet is provided with power transmission spring, be provided with described spool in described power transmission spring, described spool is arranged in described housing cavity, and the left end of described spool is connected with described proportion electro-magnet.
8. six five-way logic selector valves as described in claim as arbitrary in claim 1 to 7, it is characterized in that: described valve rod returning device comprises the bonnet be connected with described valve body one end by bearing pin, Returnning spring and spring seat is provided with in described bonnet, described spring is located on spring seat, described spring seat comprises left end spring seat and right-hand member spring seat, described left end spring seat is connected with described valve rod, and described right-hand member spring seat is connected with described bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521045830.2U CN205226468U (en) | 2015-12-16 | 2015-12-16 | Six five -way logical choice valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521045830.2U CN205226468U (en) | 2015-12-16 | 2015-12-16 | Six five -way logical choice valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226468U true CN205226468U (en) | 2016-05-11 |
Family
ID=55901535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521045830.2U Withdrawn - After Issue CN205226468U (en) | 2015-12-16 | 2015-12-16 | Six five -way logical choice valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387245A (en) * | 2015-12-16 | 2016-03-09 | 日照海卓液压有限公司 | Six-position five-way logic selector valve |
-
2015
- 2015-12-16 CN CN201521045830.2U patent/CN205226468U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387245A (en) * | 2015-12-16 | 2016-03-09 | 日照海卓液压有限公司 | Six-position five-way logic selector valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160511 Effective date of abandoning: 20170929 |