CN218207287U - Electro-hydraulic reversing valve normal position conversion module - Google Patents
Electro-hydraulic reversing valve normal position conversion module Download PDFInfo
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- CN218207287U CN218207287U CN202222447100.1U CN202222447100U CN218207287U CN 218207287 U CN218207287 U CN 218207287U CN 202222447100 U CN202222447100 U CN 202222447100U CN 218207287 U CN218207287 U CN 218207287U
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Abstract
The application relates to an electricity liquid switching-over valve normal position conversion module, it relates to hydraulic pressure technical field, and it is including being used for setting up the valve body piece between the main valve of guide's solenoid valve and electricity liquid switching-over valve, be provided with on the valve body piece and be used for making the function of the main valve of electricity liquid switching-over valve be in the oil hole group of left side position "A" or right side position "B" position when not electrified. The electromagnetic coil has the effects that the normal position of the electro-hydraulic reversing valve is 'A' or 'B', the working position is 'O', the heating of the electromagnetic coil is reduced, and the service life of the electromagnetic coil is prolonged.
Description
Technical Field
The application relates to the field of hydraulic technology, in particular to a normal position conversion module of an electro-hydraulic reversing valve.
Background
The standard two-position four-way electro-hydraulic reversing valve used in the hydraulic control system is formed by mutually communicating a pilot electromagnetic valve and a main valve, and the working position of the main valve is controlled by controlling the power-on and the power-off of the pilot electromagnetic valve.
Referring to fig. 1, when the middle position "O" and left position "a" functional valves are used, the pilot solenoid valve is energized, and the functional valves can be in the left position "a";
referring to fig. 2, when the center position "O" and right position "B" functional valves are used, the pilot solenoid valve is energized, and the functional valves can be in the right position "B".
In specific occasions, the ordinary electro-hydraulic reversing valve can be in a left position A or a right position B, and the operation time can be switched to an O position, so that the electro-hydraulic reversing valve is in a long-term power-on state, and is powered off during operation, an electromagnetic coil is easy to generate heat and damage, and the service life is short.
SUMMERY OF THE UTILITY MODEL
In order to enable the electro-hydraulic reversing valve to be in a left position A or a right position B when the electro-hydraulic reversing valve is not electrified in a specific occasion, and the electro-hydraulic reversing valve can be switched to an O position when in operation, the electro-hydraulic reversing valve normal position conversion module is provided.
The application provides an electricity liquid switching-over valve normal position conversion module adopts following technical scheme:
the normal position conversion module of the electro-hydraulic reversing valve comprises a valve body block arranged between a pilot electromagnetic valve and a main valve of the electro-hydraulic reversing valve, wherein an oil hole group used for enabling the main valve of the electro-hydraulic reversing valve to be in a left position A or a right position B when the electro-hydraulic reversing valve is not electrified is arranged on the valve body block.
By adopting the technical scheme, the oil hole group arranged on the valve body block is utilized to separate and communicate the oil circuit of the main valve of the electro-hydraulic reversing valve, so that the electro-hydraulic reversing valve can be positioned at the left position A or the right position B under the condition that the conductive magnetic valve is not electrified.
In a specific embodiment, the oil hole group includes a first oil hole, a second oil hole, a third oil hole and a fourth oil hole, the first oil hole, the second oil hole and the third oil hole all penetrate through the valve body block, and the third oil hole and the fourth oil hole are communicated through a first flow passage.
By adopting the technical scheme, the valve body block is arranged between the main valve and the pilot solenoid valve of the electro-hydraulic directional valve with the EA function in a superposition mode, the first flow channel is used for communicating the fourth oil hole and the third oil hole, and meanwhile, the fourth oil hole and the pilot solenoid valve channel are cut off, so that the end a of the main valve is controlled by the action of oil pressure, the end a is communicated with the second oil hole, and the normal position is in the end a function; when the electric valve is electrified, the pilot electromagnetic valve is electrified and switched to communicate the fourth oil hole, the third oil hole, the first flow passage and the first oil hole, so that the pressure at two ends of a main valve of the electro-hydraulic reversing valve is smooth, and the main valve core is in an O position during spring centering.
In a specific possible embodiment, a first machining hole and a second machining hole for machining the first flow passage are formed in the side wall of the valve body block, the first machining hole is communicated with the third oil hole, and the second machining hole is communicated with the fourth oil hole.
By adopting the technical scheme, the first flow channel is processed from the horizontal direction by utilizing the first processing hole and the second processing hole, so that the first flow channel is respectively communicated with the third oil hole and the fourth oil hole.
In a specific possible embodiment, a first plug is disposed at the orifice of each of the first machined hole and the second machined hole.
Through adopting above-mentioned technical scheme, utilize first shutoff stopper to block off first machined hole and second machined hole respectively, avoid hydraulic oil to flow out from first machined hole and second machined hole as far as possible, be convenient for realize the intercommunication effect of only first flow path, third oilhole and fourth oilhole.
In a specific possible embodiment, the valve block is provided with a connecting hole for connecting with the pilot electromagnetic valve and a main valve of the electro-hydraulic directional valve.
By adopting the technical scheme, when the valve body block is installed, the bolt penetrates through the connecting hole and is connected with the threaded hole in the main valve of the electro-hydraulic reversing valve, and the valve body block is positioned and installed.
In a specific embodiment, the oil hole group includes a fifth oil hole, a sixth oil hole, a seventh oil hole and an eighth oil hole, the sixth oil hole, the seventh oil hole and the eighth oil hole all penetrate through the valve block, and the fifth oil hole and the seventh oil hole are communicated through a second flow passage.
By adopting the technical scheme, the valve body block is arranged between the main valve and the pilot solenoid valve of the electro-hydraulic reversing valve with the EB function in a superposition manner, the fifth oil hole and the seventh oil hole are communicated by utilizing the second flow channel, and the fifth oil hole and the pilot solenoid valve channel are simultaneously cut off, so that the end b of the main valve is controlled by the action of oil pressure, the end b is communicated with the sixth oil hole, and the normal position is in the end b function; when the electric valve is electrified, the pilot electromagnetic valve is electrified and switched to communicate the fifth oil hole, the seventh oil hole, the second flow passage and the eighth oil hole, so that the pressure at two ends of a main valve of the electro-hydraulic reversing valve is smooth, and the main valve core is in an O position during spring centering.
In a specific possible embodiment, a third machining hole and a fourth machining hole for machining the second flow passage are formed in the side wall of the valve body block, the third machining hole is communicated with the seventh oil hole, and the fourth machining hole is communicated with the fifth oil hole.
By adopting the technical scheme, the second flow passage is processed from the horizontal direction by utilizing the third processing hole and the fourth processing hole, so that the second flow passage is respectively communicated with the seventh oil hole and the fifth oil hole.
In a specific possible embodiment, the orifices of the third machined hole and the fourth machined hole are provided with second plugs.
Through adopting above-mentioned technical scheme, utilize the second shutoff stopper to block off third machined hole and fourth machined hole respectively, avoid hydraulic oil to flow out from third machined hole and fourth machined hole as far as possible, be convenient for realize the intercommunication effect of only second flow path, fifth oilhole and seventh oilhole.
In summary, the present application includes at least one of the following beneficial technical effects:
1. a valve body block is arranged between a main valve and a pilot solenoid valve of the electro-hydraulic reversing valve with the EA function in a superposed mode, a first flow channel is used for communicating a fourth oil hole and a third oil hole, and the fourth oil hole and a pilot solenoid valve channel are simultaneously separated, so that the end a of the main valve is controlled by the action of oil pressure, the end a is communicated with a second oil hole, and the normal position is in the end a function; when the electric valve is electrified, the pilot electromagnetic valve is electrified and switched to communicate the fourth oil hole, the third oil hole, the first flow passage and the first oil hole, so that the pressure at two ends of a main valve of the electro-hydraulic reversing valve is smooth, and the main valve core is in the middle of a spring and is in an O position;
2. a valve block is arranged between a main valve and a pilot electromagnetic valve of the electro-hydraulic reversing valve with EB function in an overlapping mode, a second flow passage is used for communicating a fifth oil hole and a seventh oil hole, and meanwhile a fifth oil hole and a pilot electromagnetic valve passage are cut off, so that the end b of the main valve is under the action of control oil pressure, the end b is communicated with a sixth oil hole, and the normal position is in a b-end function; when the electric valve is electrified, the pilot electromagnetic valve is electrified and switched to communicate the fifth oil hole, the seventh oil hole, the second flow passage and the eighth oil hole, so that the pressure at two ends of a main valve of the electro-hydraulic reversing valve is smooth, and the main valve core is in an O position during spring centering.
Drawings
Fig. 1 is an oil circuit diagram of an electro-hydraulic directional valve for embodying a normal position "0" and a working position "a" in the embodiment of the present application.
Fig. 2 is an oil circuit diagram of an electro-hydraulic directional valve for embodying a normal position "0" and a working position "B" in the embodiment of the present application.
Fig. 3 is a schematic structural diagram of an electro-hydraulic directional valve for embodying a normal position "a" and a working position "O" in embodiment 1 of the present application.
Fig. 4 is a schematic view of the overall structure for embodying the valve block in embodiment 1 of the present application.
Fig. 5 is a schematic view of the overall structure of the oil hole group according to embodiment 1 of the present application.
Fig. 6 isbase:Sub>A cross-sectional view taken along planebase:Sub>A-base:Sub>A of fig. 4.
Fig. 7 is an oil path diagram of an electro-hydraulic directional valve for embodying a normal position "a" and a working position "O" in embodiment 1 of the present application.
Fig. 8 is a schematic structural diagram of an electro-hydraulic directional valve for embodying a normal position "B" and a working position "O" in embodiment 2 of the present application.
Fig. 9 is a schematic view of the overall structure for embodying the valve block in embodiment 2 of the present application.
Fig. 10 is a schematic view of the overall structure of the oil hole group used in embodiment 2 of the present application.
Fig. 11 isbase:Sub>A cross-sectional view taken along planebase:Sub>A-base:Sub>A of fig. 9.
Fig. 12 is an oil path diagram of an electro-hydraulic directional control valve for embodying the normal position "B" and the operating position "O" in embodiment 2 of the present application.
Description of reference numerals: 1. a pilot solenoid valve; 2. a main valve; 3. a valve block; 4. a set of oil holes; 5. connecting holes; 6. a first oil hole; 7. a second oil hole; 8. a third oil hole; 9. a fourth oil hole; 10. a fifth oil hole; 11. a sixth oil hole; 12. a seventh oil hole; 13. an eighth oil hole; 14. a first flow passage; 15. a first machining hole; 16. a second machining hole; 17. a second flow passage; 18. processing a third hole; 19. a fourth machining hole; 20. a first plug; 21. and (7) second blocking.
Detailed Description
The present application is described in further detail below with reference to figures 1-12.
The embodiment of the application discloses an electro-hydraulic directional valve normal position conversion module.
Example 1
Referring to fig. 3 and 4, the normal position conversion module of the electro-hydraulic directional valve comprises a valve body block 3, wherein the valve body block 3 is arranged between a pilot electromagnetic valve 1 and a main valve 2 of the electro-hydraulic directional valve, in the embodiment, the valve body block 3 is in a cuboid plate shape, an oil hole group 4 for enabling the normal position of the electro-hydraulic directional valve to be exchanged with the electrified working position is arranged on the valve body block 3, connecting holes 5 are formed in four corners of the valve body block 3, and when the valve body block 3 is arranged between the pilot electromagnetic valve 1 and the main valve 2 of the electro-hydraulic directional valve, bolts sequentially penetrate through the pilot electromagnetic valve 1, the connecting holes and the main valve 2 of the electro-hydraulic directional valve to be in threaded connection, so that the valve body block 3 is installed.
Referring to fig. 4, 5 and 6, the oil hole group 4 includes a first oil hole 6, a second oil hole 7, a third oil hole 8 and a fourth oil hole 9, the first oil hole 6, the second oil hole 7 and the third oil hole 8 are vertically arranged and penetrate through the valve block 3, the third oil hole 8 corresponds to the T end, the second oil hole 7 corresponds to the P end, and the first oil hole 6 corresponds to the a end. A first flow passage 14 is formed between the third oil hole 8 and the fourth oil hole 9, the cross section of the first flow passage 14 is L-shaped, and the third oil hole 8 and the fourth oil hole 9 are communicated through the first flow passage 14.
Referring to fig. 6, a first machining hole 15 and a second machining hole 16 for machining the first flow passage 14 are formed in a vertical side wall of the valve body block 3, axes of the first machining hole 15 and the second machining hole 16 are horizontally arranged, the axis of the first machining hole 15 is perpendicular to the axis of the second machining hole 16, the third oil hole 8 is communicated with a hole wall of the first machining hole 15, the fourth oil hole 9 is communicated with a hole wall of the second machining hole 16, and the first machining hole 15 is communicated with the second machining hole 16 to form the first flow passage 14. A first sealing plug 20 is arranged at the hole of the first processing hole 15 and the hole of the second processing hole 16, and in this embodiment, the first sealing plug 20 is a rubber plug.
The first sealing plug 20 is used for respectively sealing the first processing hole 15 and the second processing hole 16, so that hydraulic oil is prevented from flowing out of the first processing hole 15 and the second processing hole 16 as much as possible, and the effect of communicating only the first flow passage 14, the third oil hole 8 and the fourth oil hole 9 is achieved.
Referring to fig. 7, a valve block 3 is installed between a main valve 2 and a pilot solenoid valve 1 of an electro-hydraulic directional valve with an "EA" function in an overlapping manner, a first flow passage 14 is used for communicating a fourth oil hole 9 and a third oil hole 8, and simultaneously, a channel of the fourth oil hole 9 and a channel of the pilot solenoid valve 1 are blocked, so that an end a of the main valve 2 is acted by a control oil pressure, and an end a is communicated with a second oil hole 7, and a normal position is in an end a function; when the electricity is conducted, the pilot electromagnetic valve 1 is switched on to communicate the fourth oil hole 9, the third oil hole 8, the first flow passage 14 and the first oil hole 6, so that the pressure at two ends of a main valve 2 of the electro-hydraulic reversing valve is smooth, and the main valve 2 is in an O position function in a spring recovery mode.
The implementation principle of the embodiment 1 is as follows: the oil hole group 4 arranged on the valve block 3 is used for blocking and communicating the oil path of the main valve 2 of the electro-hydraulic reversing valve, so that the normal position of the electro-hydraulic reversing valve is 'A' and the working position of the electro-hydraulic reversing valve is 'O'.
Example 2
The present embodiment is different from embodiment 1 in the oil hole group 4.
Referring to fig. 8, 9 and 10, the oil hole group 4 includes a fifth oil hole 10, a sixth oil hole 11, a seventh oil hole 12 and an eighth oil hole 13, the sixth oil hole 11, the seventh oil hole 12 and the eighth oil hole 13 are vertically arranged and penetrate through the valve block 3, the sixth oil hole 11 corresponds to the P end, the seventh oil hole 12 corresponds to the T end, and the eighth oil hole 13 corresponds to the B end. And a second flow passage 17 is arranged between the fifth oil hole 10 and the seventh oil hole 12, the cross section of the second flow passage 17 is L-shaped, and the fifth oil hole 10 and the seventh oil hole 12 are communicated through the second flow passage 17.
Referring to fig. 11, a third machining hole 18 and a fourth machining hole 19 for machining a second flow channel 17 are formed in a vertical side wall of the valve body block 3, axes of the third machining hole 18 and the fourth machining hole 19 are horizontally arranged, the axis of the third machining hole 18 is perpendicular to the axis of the fourth machining hole 19, hole walls of the third oil hole 8 and the third machining hole 18 are communicated, hole walls of the fourth oil hole 9 and the fourth machining hole 19 are communicated, and the third machining hole 18 and the fourth machining hole 19 are communicated to form the second flow channel 17. A second sealing plug 21 is arranged at the hole of the third processing hole 18 and the hole of the fourth processing hole 19, and in this embodiment, the second sealing plug 21 is a rubber plug.
The third machining hole 18 and the fourth machining hole 19 are respectively blocked by the second blocking plug 21, so that hydraulic oil is prevented from flowing out of the third machining hole 18 and the fourth machining hole 19 as much as possible, and the effect of communicating only the second flow passage 17, the third oil hole 8 and the fourth oil hole 9 is achieved conveniently.
Referring to fig. 12, a valve block 3 is installed between a main valve 2 and a pilot solenoid valve 1 of an electro-hydraulic directional valve with an EB function in an overlapping manner, a second flow passage 17 is used for communicating a fifth oil hole 10 and a seventh oil hole 12, and simultaneously blocking passages of the fifth oil hole 10 and the pilot solenoid valve 1, so that the end b of the main valve 2 is acted by a control oil pressure, and the end b is communicated with a sixth oil hole 11, and the normal position is in a b-end function; when the power is on, the pilot electromagnetic valve 1 is switched to be electrified and is communicated with the fifth oil hole 10, the seventh oil hole 12, the second flow passage 17 and the eighth oil hole 13, so that the pressure at two ends of a main valve 2 of the electro-hydraulic reversing valve is smooth, and the spring of the core of the main valve 2 is in the middle and is in an O position.
The implementation principle of the embodiment 2 is as follows: the oil hole group 4 arranged on the valve block 3 is used for blocking and communicating the oil path of the main valve 2 of the electro-hydraulic reversing valve, so that the normal position of the electro-hydraulic reversing valve is B and the working position of the electro-hydraulic reversing valve is O.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an electricity liquid switching-over valve normal position conversion module which characterized in that: the electro-hydraulic directional control valve comprises a valve body block (3) arranged between a pilot electromagnetic valve (1) and a main valve (2) of the electro-hydraulic directional control valve, wherein an oil hole group (4) used for enabling the main valve (2) of the electro-hydraulic directional control valve to be in a left position A or a right position B when the electro-hydraulic directional control valve is not electrified is arranged on the valve body block (3).
2. The electro-hydraulic directional valve normal position conversion module of claim 1, wherein: the oil hole group (4) comprises a first oil hole (6), a second oil hole (7), a third oil hole (8) and a fourth oil hole (9), the first oil hole (6), the second oil hole (7) and the third oil hole (8) all penetrate through the valve block (3), and the third oil hole (8) and the fourth oil hole (9) are communicated through a first flow passage (14).
3. The electro-hydraulic directional valve normal position conversion module of claim 2, wherein: the side wall of the valve body block (3) is provided with a first machining hole (15) and a second machining hole (16) which are used for machining the first flow channel (14), the first machining hole (15) is communicated with the third oil hole (8), and the second machining hole (16) is communicated with the fourth oil hole (9).
4. The electro-hydraulic directional valve normal position conversion module of claim 3, wherein: the orifices of the first machining hole (15) and the second machining hole (16) are provided with first sealing plugs (20).
5. The electro-hydraulic directional valve normal position conversion module of claim 1, wherein: and the valve block (3) is provided with a connecting hole (5) for connecting the pilot electromagnetic valve (1) and a main valve (2) of the electro-hydraulic reversing valve.
6. The electro-hydraulic directional valve normal position conversion module of claim 1, wherein: the oil hole group (4) comprises a fifth oil hole (10), a sixth oil hole (11), a seventh oil hole (12) and an eighth oil hole (13), the sixth oil hole (11), the seventh oil hole (12) and the eighth oil hole (13) all penetrate through the valve block (3), and the fifth oil hole (10) and the seventh oil hole (12) are communicated through a second flow passage (17).
7. The electro-hydraulic directional valve normal position conversion module of claim 6, wherein: and a third machining hole (18) and a fourth machining hole (19) for machining the second flow channel (17) are formed in the side wall of the valve body block (3), the third machining hole (18) is communicated with the seventh oil hole (12), and the fourth machining hole (19) is communicated with the fifth oil hole (10).
8. The electro-hydraulic directional valve normal position conversion module of claim 7, wherein: and second plugs (21) are arranged at the openings of the third machining hole (18) and the fourth machining hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222447100.1U CN218207287U (en) | 2022-09-14 | 2022-09-14 | Electro-hydraulic reversing valve normal position conversion module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222447100.1U CN218207287U (en) | 2022-09-14 | 2022-09-14 | Electro-hydraulic reversing valve normal position conversion module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207287U true CN218207287U (en) | 2023-01-03 |
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ID=84634103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222447100.1U Active CN218207287U (en) | 2022-09-14 | 2022-09-14 | Electro-hydraulic reversing valve normal position conversion module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218207287U (en) |
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2022
- 2022-09-14 CN CN202222447100.1U patent/CN218207287U/en active Active
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