CN213017011U - Hydraulic digital reversing valve - Google Patents
Hydraulic digital reversing valve Download PDFInfo
- Publication number
- CN213017011U CN213017011U CN202020899384.6U CN202020899384U CN213017011U CN 213017011 U CN213017011 U CN 213017011U CN 202020899384 U CN202020899384 U CN 202020899384U CN 213017011 U CN213017011 U CN 213017011U
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- lead screw
- reversing
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- 239000003921 oil Substances 0.000 description 16
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
A hydraulic digital directional valve comprising: the reversing valve comprises a reversing valve body and a reversing valve body, wherein the reversing valve body comprises a valve body, a valve sleeve and a valve core, the valve core is arranged in the valve sleeve, the valve sleeve is arranged in the valve body, a through hole for communicating an external oil path is formed in the valve body, an oil path is arranged on the valve sleeve corresponding to the through hole, and the valve core is respectively provided with an oil path opening position and an oil path closing position relative to the valve sleeve; the stepping motor is arranged at one end of the valve body and connected with the valve body, and a control channel is arranged at one end of the stepping motor connected with the valve body; and the control piece is arranged in a control channel of the stepping motor and comprises a lead screw and a slide block, one end of the lead screw is connected with a motor shaft of the stepping motor, the other end of the lead screw is connected with one end of the slide block, and the other end of the slide block is connected with one end of the valve core.
Description
Technical Field
The utility model relates to a hydraulic pressure switching-over valve, especially one kind be arranged in realizing the intercommunication of hydraulic pressure oil stream, cut off and the switching-over in the super high pressure system oil circuit to and pressure uninstallation and sequence action control's hydraulic pressure digital switching-over valve.
Background
The reversing principle of the hydraulic digital reversing valve in the prior art is that an electromagnetic coil at one end generates suction force after being electrified, and a valve core is sucked to the side where the electromagnetic coil is electrified to realize the reversing purpose. When the electromagnetic coils at the two ends are all powered off, the valve core returns to the middle position through the thrust of the springs at the two ends, and then the reversing action is completed. However, in this way, the valve jamming phenomenon can not be avoided when the valve core and the valve sleeve move relatively, i.e., the valve is not completely reversed and does not move in place, so that the oil cylinder can continuously boost pressure, the hydraulic electromagnetic valve can be damaged, and personal injury, property loss and the like can be caused even in severe cases. When the electromagnetic directional valve is electrified for a long time, the electromagnetic coil is heated, so that the aging of internal components is accelerated. Because the two ends of the valve core of the electromagnetic reversing valve are provided with the springs for fixing the position of the valve core, when the electromagnetic coil is electrified, the valve core is sucked to the reversing position after overcoming the elastic force of the springs, and when the electromagnetic coil returns to the middle position, the valve core returns to the middle position by the elastic force of the springs, so the reversing speed is insensitive.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned problem of prior art, a hydraulic pressure digital reversing valve is provided.
In order to achieve the above object, the utility model provides a hydraulic pressure digital reversing valve, wherein, include:
the reversing valve comprises a reversing valve body and a reversing valve body, wherein the reversing valve body comprises a valve body, a valve sleeve and a valve core, the valve core is arranged in the valve sleeve, the valve sleeve is arranged in the valve body, a through hole for communicating an external oil path is formed in the valve body, an oil path is arranged on the valve sleeve corresponding to the through hole, and the valve core is respectively provided with at least one oil path opening position and an oil path closing position relative to the valve sleeve;
the stepping motor is arranged at one end of the valve body and connected with the valve body, and a control channel is arranged at one end of the stepping motor connected with the valve body; and
the control piece is arranged in the control channel and comprises a lead screw and a sliding block, one end of the lead screw is connected with a motor shaft of the stepping motor, the other end of the lead screw is connected with one end of the sliding block, and the other end of the sliding block is connected with one end of the valve core.
In the hydraulic digital reversing valve, the other end of the valve core is provided with the resetting correcting piece, and the resetting correcting piece is arranged in the valve end cover of the valve body.
In the hydraulic digital reversing valve, the lead screw is in threaded connection with the motor shaft, the motor shaft is provided with the internal thread hole, and the lead screw is provided with the external thread matched with the internal thread hole.
The control piece further comprises a fixing pin, the fixing pin is arranged on the motor shell and located close to one side of the valve body, a sliding groove is formed in the sliding block, one end of the fixing pin is located in the sliding groove, and the sliding groove corresponds to the limit stroke of the valve core.
The hydraulic digital reversing valve is characterized in that the stepping motor comprises a motor shell, a motor stator and a motor rotor, the motor stator and the motor rotor are installed in the motor shell, one end of the motor shell is connected with the valve body, the control channel is arranged on the motor shell, the motor rotor is arranged opposite to the motor stator, and the motor shaft is installed on the motor rotor.
In the hydraulic digital reversing valve, the motor rotor and the motor shaft are coaxially arranged, the lead screw and the motor shaft are coaxially arranged, and the valve core and the lead screw are coaxially arranged.
In the hydraulic digital reversing valve, the motor end cover is mounted at the other end of the motor casing, and one end of the motor rotor is mounted on the motor end cover through the rotor bearing.
In the hydraulic digital reversing valve, the motor shaft is mounted at the other end of the motor rotor and is mounted on the motor casing through the casing bearing.
In the hydraulic digital reversing valve, the lead screw is connected with the slide block in a clamping manner or in a pin connection manner.
In the hydraulic digital reversing valve, the reversing valve body is a two-position two-way reversing valve, a two-position three-way reversing valve, a three-position three-way reversing valve or a three-position four-way reversing valve.
The utility model has the beneficial effects that:
the utility model discloses change prior art's electromagnetic attraction into motor torque, motor torque is 3-4 times of electromagnet attraction, when having solved case and valve barrel relative motion, produces the case and warp a little along with the increase of pressure, makes case and valve barrel produce the card pause or pause phenomenon, the problem that the action is insensitive does not commutate or commutates appears. In addition, when the electromagnetic valve in the prior art is reversed for a long time, the electromagnetic coil is electrified for a long time, the phenomenon that the electromagnetic coil is heated and scalded can be generated, and the electromagnetic coil can be burnt down when the electromagnetic valve is seriously damaged, so that personal safety and property loss can be caused. And the utility model discloses change into step motor's rotatory torsion with the suction that produces when solenoid got the electricity, after step motor got the electricity and drives case arrival position during the switching-over, step motor turned into weak current by the forceful electric power and maintains the switching-over position, has reduced because of the heat that the electricity produced for a long time, has increased the life of hydraulic pressure digital reversing valve. Simultaneously, the little switching-over speed of prior art's solenoid suction is slow, and the utility model discloses a step motor coil's line footpath is big for switching-over speed is more sensitive than solenoid. The solenoid of prior art need install simultaneously at the both ends of valve body, and both sides produce suction in turn and make case and valve barrel produce relative motion and play the effect of switching-over, and the utility model discloses only need unilateral installation, it is through step motor's positive and negative rotation control lead screw and slider, makes electric motor rotor's rotary motion turn into the straight reciprocating motion of case to control case and valve body realize that relative motion plays the effect of switching-over.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Drawings
Fig. 1 is a cross-sectional view of the structure of an embodiment of the present invention (the valve core is located at the position of direction a);
FIG. 2 is a top view of the motor housing of the embodiment of FIG. 1;
FIG. 3 is a schematic illustration of the embodiment of FIG. 1 with the spool in a neutral position;
FIG. 4 is a schematic view of the valve spool of the embodiment of FIG. 1 in the B-position;
fig. 5 is a schematic structural diagram of a control element according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a control element according to another embodiment of the present invention.
Wherein the reference numerals
1 reversing valve body
11 valve body
12 valve core
13 valve sleeve
14 reset correction piece
15 valve end cap
2 stepping motor
21 motor casing
22 motor end cover
23 electric machine stator
24 electric motor rotor
25 Motor shaft
26 shell bearing
27 rotor bearing
28 bearing retainer ring
3 control element
31 sliding block
32 lead screw
33 fixed pin
34 chute
4A direction indicator lamp
5B direction indicator lamp
6 middle position indicating lamp
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
referring to fig. 1-4, fig. 1 is a cross-sectional view of the structure of an embodiment of the present invention (the valve element 12 is located at a position in a direction a), fig. 2 is a top view of the motor housing 21 of the embodiment shown in fig. 1, fig. 3 is a schematic diagram of the valve element 12 of the embodiment shown in fig. 1 located at a middle position, and fig. 4 is a schematic diagram of the valve element 12 of the embodiment shown in fig. 1 located at a position in a direction B. The utility model discloses a hydraulic pressure digit switching-over valve, include: the reversing valve body 1 comprises a valve body 11, a valve sleeve 13 and a valve core 12, wherein the valve core 12 is installed in the valve sleeve 13, the valve sleeve 13 is installed in the valve body 11, a through hole for communicating an external oil path is formed in the valve body 11, an oil path is formed in the valve sleeve 13 corresponding to the through hole, and the valve core 12 is provided with at least one oil path opening position and an oil path closing position relative to the valve sleeve 13; the stepping motor 2 is arranged at one end of the valve body 11 and connected with the valve body 11, and a control channel is arranged at one end of the stepping motor 2 connected with the valve body 11; and the control part 3 is arranged in a control channel of the stepping motor 2, the control part 3 comprises a lead screw 32 and a slide block 31, one end of the lead screw 32 is connected with the motor shaft 25 of the stepping motor 2, the other end of the lead screw 32 is connected with one end of the slide block 31, and the other end of the slide block 31 is connected with one end of the valve core 12. The lead screw 32 of this embodiment with the motor shaft 25 is threaded connection, the motor shaft 25 is provided with the internal thread hole, the lead screw 32 be provided with the external screw thread of internal thread hole adaptation. After the power supply is connected, the motor stator 23 and the motor rotor 24 generate relative motion, and the motor rotor 24 drives the motor shaft 25 to rotate clockwise. The screw rod 32 is driven by the inner thread of the hole of the motor shaft 25 to do relative motion, and the screw rod 32 is fixed with the slide block 31, so that the rotary motion of the motor rotor 24 driving the motor shaft 25 is finally converted into linear reciprocating motion.
In this embodiment, the other end of the valve core 12 is provided with a return correcting member 14, and the return correcting member 14 is disposed in a valve end cover 15 of the valve body 11. The return corrector 14 is preferably a return spring. The control member 3 may further include a fixing pin 33, the fixing pin 33 is disposed on the motor casing 21 and located at a side close to the valve body 11, a sliding slot 34 is disposed on the slider 31, one end of the fixing pin 33 is located in the sliding slot 34, the sliding slot 34 is disposed corresponding to the limit stroke of the valve element 12, and the stroke of the fixing pin 33 is restricted so that the slider 31 can only perform reciprocating linear motion. Step motor 2 includes motor casing 21 and installs motor stator 23 and motor rotor 24 in motor casing 21, the one end of motor casing 21 with valve body 11 is connected, control channel sets up on the motor casing 21, motor rotor 24 for motor stator 23 sets up, motor shaft 25 installs on motor rotor 24. Preferably, the motor rotor 24 and the motor shaft 25 are coaxially arranged, the lead screw 32 and the motor shaft 25 are coaxially arranged, and the valve core 12 and the lead screw 32 are coaxially arranged. The other end of the motor casing 21 is provided with a motor end cover 22, and one end of the motor rotor 24 is arranged on the motor end cover 22 through a rotor bearing 27. The motor shaft 25 is installed at the other end of the motor rotor 24 and is installed on the motor casing 21 through a casing bearing 26, and the casing bearing 26 and the motor rotor 24 may further be provided with a bearing retainer 28. The motor casing 21 may further be provided with a reversing indicator light, as shown in fig. 2, the embodiment includes an a-direction indicator light 4, a B-direction indicator light 5 and a middle indicator light 6.
Referring to fig. 5 and 6, fig. 5 is a schematic structural view of a control element 3 according to an embodiment of the present invention, and fig. 6 is a schematic structural view of the control element 3 according to another embodiment of the present invention. The lead screw 32 and the slider 31 of this embodiment may be in a snap connection or a pin connection. As shown in fig. 5, a T-shaped groove adapted to the boss at the end of the screw rod 32 may be provided on the slider 31, and the boss at the end of the screw rod 32 may be engaged with the T-shaped groove of the slider 31 to connect the two. The slider 31 may be connected to the end of the valve body 12 by using a T-shaped groove, and a boss on the end of the valve body 12 may be engaged with the slider 31. As shown in fig. 6, a pin hole may be provided at an end of the screw shaft 32, a corresponding mounting hole may be provided in the slider 31, and the screw shaft 32 and the slider 31 may be connected by a connecting pin. The screw 32 and the slider 31 and the connection between the slider 31 and the valve element 12 are not limited as long as the connection can achieve the force transmission.
When the stepping motor 2 works, the rotating speed and the rotating limit are controlled by inputting current to the stepping motor 2, when the current passes through the motor stator 23, a magnetic field is generated to rotate the motor rotor 24, and the rotating motion is converted into linear reciprocating motion through the screw rod 32 and the sliding block 31, so that the valve core 12 and the valve body 11 are controlled to realize relative motion. When the stepping motor 2 is powered to drive the valve core 12 to reach the position during reversing, the stepping motor 2 is switched from strong current to weak current to maintain the reversing position. When the motor rotates forwards, the motor rotor 24 drives the motor shaft 25 to rotate so as to extend the screw rod 32, when the motor rotates backwards, the motor rotor 24 drives the motor shaft 25 to rotate so as to retract the screw rod 32, the screw rod 32 drives the sliding block 31 to correspondingly extend or retract, the sliding block 31 transmits force to the valve core 12, the valve core 12 extends or retracts relative to the valve sleeve 13, switching change of an oil passage opening position and an oil passage closing position is carried out according to needs, and therefore the function of oil passage switching is achieved.
The utility model discloses a case 12 and 11 relative motion's of valve body direction control type slide valve, the operating position that its switching-over valve body 1 stopped according to case 12 in valve body 11 can be two-position two-way switching-over valve, two-position three-way switching-over valve, multiple forms such as three-position three-way switching-over valve or three-position four-way switching-over valve, the switching-over valve that corresponds every different break-make requirement sets up corresponding oil duct respectively and opens position and oil duct closed position, can realize the intercommunication of hydraulic pressure oil circuit in super high pressure system oil circuit, cut off and the switching-over, and the control of pressure uninstallation and sequence.
The utility model discloses change prior art's electromagnetic attraction into motor torque, motor torque is 3-4 times of electromagnet attraction, when having solved case 12 and valve barrel 13 relative motion, produces case 12 microdeformations along with increasing of pressure, makes case 12 and valve barrel 13 produce the card pause or pause phenomenon, the insensitive problem of non-commutative or switching-over action appears. In addition, when the electromagnetic valve in the prior art is reversed for a long time, the electromagnetic coil is electrified for a long time, the phenomenon that the electromagnetic coil is heated and scalded can be generated, and the electromagnetic coil can be burnt down when the electromagnetic valve is seriously damaged, so that personal safety and property loss can be caused. And the utility model discloses change into step motor 2's rotatory torsion with the suction that produces when solenoid got the electricity, step motor 2 got the electricity during the switching-over and drives case 12 arrival position after, step motor 2 turns into weak current by the forceful electric power and maintains the switching-over position, has reduced because of the heat that the electricity produced for a long time, has increased the life of hydraulic pressure digital reversing valve. Simultaneously, the little switching-over speed of prior art's solenoid suction is slow, and the utility model discloses a step motor 2 coil's line footpath is big for switching-over speed is more sensitive than solenoid. The solenoid of prior art need install simultaneously at the both ends of valve body 11, and both sides produce suction in turn and make case 12 and valve barrel 13 produce relative motion and play the effect of switching-over, and the utility model discloses only need unilateral installation, its just reverse control lead screw 32 and slider 31 through step motor 2, make the rotary motion of electric motor rotor 24 turn into the straight reciprocating motion of case 12 to control case 12 and valve body 11 realize that relative motion plays the effect of switching-over.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (10)
1. A hydraulic digital directional valve, comprising:
the reversing valve comprises a reversing valve body and a reversing valve body, wherein the reversing valve body comprises a valve body, a valve sleeve and a valve core, the valve core is arranged in the valve sleeve, the valve sleeve is arranged in the valve body, a through hole for communicating an external oil path is formed in the valve body, an oil path is arranged on the valve sleeve corresponding to the through hole, and the valve core is respectively provided with at least one oil path opening position and an oil path closing position relative to the valve sleeve;
the stepping motor is arranged at one end of the valve body and connected with the valve body, and a control channel is arranged at one end of the stepping motor connected with the valve body; and
the control piece is arranged in the control channel and comprises a lead screw and a sliding block, one end of the lead screw is connected with a motor shaft of the stepping motor, the other end of the lead screw is connected with one end of the sliding block, and the other end of the sliding block is connected with one end of the valve core.
2. The hydraulic digital directional valve as recited in claim 1 wherein the other end of the spool is provided with a reset correction member disposed within a valve end cap of the valve body.
3. The hydraulic digital directional valve as recited in claim 2, wherein said lead screw is threadedly connected to said motor shaft, said motor shaft being provided with an internally threaded bore, said lead screw being provided with an external thread adapted to said internally threaded bore.
4. The hydraulic digital directional valve according to claim 1, 2 or 3, wherein the control member further comprises a fixed pin disposed on a motor housing of the stepping motor and located at a side close to the valve body, the slider is provided with a slide slot, one end of the fixed pin is located in the slide slot, and the slide slot is disposed corresponding to a limit stroke of the spool.
5. The hydraulic digital directional valve according to claim 4, wherein the stepper motor includes the motor housing and a motor stator and a motor rotor mounted within the motor housing, one end of the motor housing is connected to the valve body, the control passage is provided on the motor housing, the motor rotor is disposed opposite the motor stator, and the motor shaft is mounted on the motor rotor.
6. The hydraulic digital directional valve as recited in claim 5 wherein the motor rotor is disposed coaxially with a motor shaft, the lead screw is disposed coaxially with the motor shaft, and the spool is disposed coaxially with the lead screw.
7. The hydraulic digital reversing valve according to claim 5, wherein a motor end cover is mounted to the other end of the motor housing, and one end of the motor rotor is mounted to the motor end cover through a rotor bearing.
8. The hydraulic digital reversing valve of claim 7, wherein the motor shaft is mounted to the other end of the motor rotor and to the motor housing by a housing bearing.
9. A hydraulic digital reversing valve according to claim 4, wherein the lead screw is snap-fit or pin-fit with the slide.
10. The hydraulic digital directional valve as recited in claim 4 wherein the directional valve body is a two-position two-way directional valve, a two-position three-way directional valve, a three-position three-way directional valve, or a three-position four-way directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899384.6U CN213017011U (en) | 2020-05-25 | 2020-05-25 | Hydraulic digital reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020899384.6U CN213017011U (en) | 2020-05-25 | 2020-05-25 | Hydraulic digital reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017011U true CN213017011U (en) | 2021-04-20 |
Family
ID=75488976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020899384.6U Active CN213017011U (en) | 2020-05-25 | 2020-05-25 | Hydraulic digital reversing valve |
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| Country | Link |
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| CN (1) | CN213017011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483138A (en) * | 2021-06-16 | 2021-10-08 | 北京华德液压工业集团有限责任公司 | Digital valve with shaft motion controller |
| CN115839425A (en) * | 2021-09-18 | 2023-03-24 | 南京思来机器人有限公司 | Ultrasonic motor driven electro-hydraulic servo valve |
-
2020
- 2020-05-25 CN CN202020899384.6U patent/CN213017011U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483138A (en) * | 2021-06-16 | 2021-10-08 | 北京华德液压工业集团有限责任公司 | Digital valve with shaft motion controller |
| CN115839425A (en) * | 2021-09-18 | 2023-03-24 | 南京思来机器人有限公司 | Ultrasonic motor driven electro-hydraulic servo valve |
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