CN103291962B - Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset - Google Patents
Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset Download PDFInfo
- Publication number
- CN103291962B CN103291962B CN201310265250.3A CN201310265250A CN103291962B CN 103291962 B CN103291962 B CN 103291962B CN 201310265250 A CN201310265250 A CN 201310265250A CN 103291962 B CN103291962 B CN 103291962B
- Authority
- CN
- China
- Prior art keywords
- valve pocket
- boss
- fluid port
- hydraulic fluid
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a rotary valve device capable of automatically eliminating hydraulic cylinder piston offset. The rotary valve device comprises a valve body, a first valve sleeve, a second valve sleeve, a valve plug, a first end cover and a second end cover. A first boss, a second boss, a third boss and a fourth boss are arranged on the valve plug, and the third boss, the first boss, the second boss and the fourth boss are sequentially arranged in the direction from the first end cover to the second end cover. Oil cavities are formed between adjacent bosses, and corresponding oil ports are arranged on the valve body walls where the oil cavities and the bosses are located. Grooves are arranged on the end surfaces of the first boss and the second boss, and corresponding valve sleeve windows are arranged on the first valve sleeve and the second valve sleeve where the grooves are located. A fifth boss and a sixth boss are arranged on a piston of a hydraulic cylinder matched with a rotary valve, an oil cavity is formed between the fifth boss and the sixth boss, and a corresponding oil port is arranged on the cylinder body wall where the oil cavity and the boss are located. The rotary valve device has the advantages of being capable of automatically controlling the flow flowing towards two sides of the hydraulic cylinder through relative moving of the second valve sleeve and the first valve sleeve, and thereby automatically eliminating hydraulic cylinder piston offset.
Description
Technical field
The present invention relates to the commutation of a kind of hydraulic pressure, rectifying device, be mainly used in the field of engineering technology realizing automatically eliminating hydraulic cylinder piston skew.
Background technique
Rotary valve refers to the valve being come oil circuit control break-make and commutation by Spool rotating.But due to the restriction of machining accuracy, rotary valve cannot be accomplished to mate symmetry completely, asymmetric simultaneously due to the sealing of oil hydraulic cylinder and internal leakage etc., causes in the reciprocating motion of the pistons of oil hydraulic cylinder, the side of piston deflection oil hydraulic cylinder.In a lot of engineering field, all require that hydraulic cylinder piston can to-and-fro motion symmetrically.
Summary of the invention
The object of this invention is to provide a kind of rotary valve device automatically eliminating hydraulic cylinder piston skew.
For achieving the above object, the technical solution used in the present invention is: the rotary valve device that the present invention can eliminate hydraulic cylinder piston skew automatically comprises valve body, spool, the first valve pocket, the second valve pocket, the first end cap and the second end cap, spool is provided with the first boss, the second boss, the 3rd boss and the 4th boss, and the 3rd boss, the first boss, the second boss and the 4th direction of boss along the first end cap to the second end cap are arranged successively; Second end of spool runs through and stretches out the second end cap; Second end of described spool is connected with the main shaft of motor by coupling or is connected with the rotor of rotational rate electromagnet;
Form the first chamber between first boss of described spool and the second boss, the valve body wall at the first place, chamber has the P filler opening that the first chamber can be made to be communicated with oil supply system; Form the second chamber between first boss and the 3rd boss, the valve body wall at the second place, chamber has the T that the second chamber can be made to be communicated with mailbox
1return opening; Form the 3rd chamber between second boss and the 4th boss, the valve body wall at the 3rd place, chamber has the T that the 3rd chamber can be made to be communicated with mailbox
2return opening;
The valve body wall at the first boss place of described spool has the A hydraulic fluid port that can be communicated with actuator, the valve body wall at the second boss place of described spool has the B hydraulic fluid port that can be communicated with actuator;
On one side end face of described first boss, along the circumferential direction compartment of terrain has and can make T
1the first groove that return opening is communicated with A hydraulic fluid port, on the opposite side end face of described first boss, along the circumferential direction compartment of terrain has second groove that P filler opening can be made to be communicated with A hydraulic fluid port; On one side end face of described second boss, along the circumferential direction compartment of terrain has the 3rd groove that P filler opening can be made to be communicated with B hydraulic fluid port, and on the opposite side end face of described second boss, along the circumferential direction compartment of terrain has and can make T
2the 4th groove that return opening is communicated with B hydraulic fluid port; First groove is along the circumferential direction alternately arranged layout with the orthographic projection of the second corresponding groove on the projection plane vertical with the medial axis of spool, 3rd groove is along the circumferential direction alternately arranged layout with the corresponding orthographic projection of the 4th groove on the projection plane vertical with the medial axis of spool, first groove is overlapped with the orthographic projection of the 3rd groove on the projection plane vertical with the medial axis of spool, and the second groove is overlapped with the orthographic projection of the 4th groove on the projection plane vertical with the medial axis of spool;
On the interior edge face of the first end cap, along the circumferential direction compartment of terrain is provided with the first projection, first end face of the first valve pocket is along the circumferential direction provided with the first aperture in compartment of terrain, described first projection is inserted in described first aperture correspondingly, is transition fit between the first projection and the first aperture; The interior edge face of the second end cap is along the circumferential direction gone up compartment of terrain and be provided with the second projection, second end face of the first valve pocket is along the circumferential direction provided with second orifice in compartment of terrain, described second projection is inserted in described second orifice correspondingly, is transition fit between the second projection and second orifice;
First valve pocket is installed on the outer surface of spool, is Spielpassung between the first valve pocket and spool; Second valve pocket is installed on the outer surface of the first valve pocket, and the second valve pocket can move relative to the axial reciprocating of the first valve pocket along the first valve pocket;
First valve pocket has corresponding first valve pocket window, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window in the position at described first groove, the second groove, the 3rd groove and the 4th groove place, and the first valve pocket window, the second valve pocket window, the 3rd valve pocket window are overlapped with the orthographic projection of the 4th valve pocket window on the projection plane vertical with the medial axis of spool; Second valve pocket has corresponding 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window and the 8th valve pocket window in the position at the first valve pocket window, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window place; 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window are overlapped with the orthographic projection of the 8th valve pocket window on the projection plane vertical with the medial axis of spool;
Form the 4th chamber between first end face of described second valve pocket and the interior edge face of the first end cap, the valve body wall at the 4th place, chamber has the first hydraulic fluid port; Form the 5th chamber between second end face of the second valve pocket and the interior edge face of the second end cap, the valve body wall at the 5th place, chamber has the second hydraulic fluid port; Can move to the direction of the second end cap along the axial of the first valve pocket under the hydraulic oil of the second valve pocket in the 4th chamber promotes, can move to the direction of the first end cap along the axial of the first valve pocket under the promotion of the hydraulic oil of the second valve pocket in the 5th chamber;
Be axially arranged with the 5th step and the 6th step along piston on the piston of oil hydraulic cylinder, form the 6th chamber between described 5th step and the 6th step, the cylinder body at the 6th place, chamber has the 7th hydraulic fluid port that can be connected with oil supply system; The cylinder body of the oil hydraulic cylinder at described 5th step place is provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port, described 5th step, forms zero lap between the 3rd hydraulic fluid port and the 4th hydraulic fluid port three; The cylinder body of the oil hydraulic cylinder at described 6th step place is provided with the 5th hydraulic fluid port and the 6th hydraulic fluid port, described 6th step, forms zero lap between the 5th hydraulic fluid port and the 6th hydraulic fluid port three;
When the motionless and cylinder body of oil hydraulic cylinder of the piston of oil hydraulic cylinder to move to the 6th direction, boss place or the cylinder body of oil hydraulic cylinder is motionless and the piston of oil hydraulic cylinder moves to the 5th direction, boss place time, described first hydraulic fluid port is communicated with the 4th hydraulic fluid port on cylinder body and described second hydraulic fluid port is communicated with the 6th hydraulic fluid port on cylinder body; When the motionless and cylinder body of oil hydraulic cylinder of the piston of oil hydraulic cylinder to move to the direction at the 5th boss place or the cylinder body of oil hydraulic cylinder is motionless and the piston of oil hydraulic cylinder moves to the 6th direction, boss place time, described first hydraulic fluid port is communicated with the 3rd hydraulic fluid port on cylinder body and described second hydraulic fluid port is communicated with the 5th hydraulic fluid port on cylinder body.
Further, the first groove of the present invention and/or the second groove are uniformly distributed along the circumferencial direction of the end face of described first boss, and the 3rd groove and/or the 4th groove are along being circumferentially uniformly distributed of end face of described second boss.
Further, the first valve pocket window of the present invention, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window are uniformly distributed along the circumferencial direction of described first valve pocket separately respectively; Described 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window and the 8th valve pocket window are uniformly distributed along the circumferencial direction of described second valve pocket separately respectively; Described first valve pocket window is communicated with the 5th valve pocket window, and described second valve pocket window is communicated with the 6th valve pocket window, and described 3rd valve pocket window is communicated with the 7th valve pocket window, and described 4th valve pocket window is communicated with the 8th valve pocket window.
Further, the present invention also comprises the first caging bolt and the second caging bolt, and described first caging bolt is threaded with the first end cap, and the first caging bolt stretches into described 4th chamber; Described second caging bolt is threaded with the second end cap, and the second caging bolt stretches into described 5th chamber.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can eliminate the polarization shift of hydraulic cylinder piston automatically, namely by the second valve pocket moving relative to the first valve pocket on the first valve pocket axial direction, control flow check to the difference of oil hydraulic cylinder both sides flow, to correct the polarization of piston.Simultaneously the second valve pocket can regulate in the displacement of the first valve pocket axially movement, with the vibrational waveform of the offset correction speed of control piston and control piston or oil hydraulic cylinder.In addition, spool is provided with the 3rd boss and the 4th boss can avoid hydraulic oil to cause seal ring to damage to the impact of seal ring, and prevents from fluid from pulsing causing unbalance stress on spool axial direction.
Accompanying drawing explanation
Fig. 1 is the hydraulic circuit schematic diagram that the present invention can eliminate the rotary valve device of hydraulic cylinder piston skew automatically, and wherein, valve body, the first end cap, the second end cap, the first valve pocket, the second housing portion are longitudinal section, center sectional views;
Fig. 2 is the rotary valve internal structure schematic diagram that the present invention can eliminate the rotary valve device of hydraulic cylinder piston skew automatically, and wherein valve body, the first end cap, the second end cap, the first valve pocket, the second housing portion are longitudinal section, center sectional views;
Fig. 3 is the three-dimensional structure schematic diagram of spool 32;
Fig. 4 three-dimensional structure schematic diagram that to be the first valve pocket 5 cut open along the longitudinal section, center of valve pocket;
Fig. 5 is the three-dimensional structure schematic diagram of the second valve pocket 4;
Fig. 6 is the three-dimensional structure schematic diagram of the first end cap 1;
Fig. 7 is the three-dimensional structure schematic diagram of the second end cap 6;
Fig. 8 is the hydraulic circuit schematic diagram of the present invention when automatically can eliminate the hydraulic cylinder piston rod left avertence of rotary valve device of hydraulic cylinder piston skew, and wherein valve body, the first end cap, the second end cap, the first valve pocket, the second housing portion are longitudinal section, center sectional views;
Fig. 9 is the enlarged view in I portion in Fig. 6;
Figure 10 is the hydraulic circuit schematic diagram of the present invention when automatically can eliminate the hydraulic cylinder piston rod right avertence of rotary valve device of hydraulic cylinder piston skew, and wherein valve body, the first end cap, the second end cap, the first valve pocket, the second housing portion are longitudinal section, center sectional views;
Figure 11 is the enlarged view in II portion in Fig. 8;
In figure, 1-first end cap; 2-first caging bolt; 3-valve body; 4-second valve pocket; 5-first valve pocket; 6-second end cap; 7-second caging bolt; 8-the 3rd boss; 9-first boss; 10-second boss; 11-the 4th boss; 12-second chamber; 13-first chamber; 14-the 3rd chamber; 15-the 4th chamber; 16-the 5th chamber; 17-first hydraulic fluid port; 18-T
1return opening; 19-P hydraulic fluid port; 20-T
2return opening; 21-second hydraulic fluid port; 22-the 3rd hydraulic fluid port; 23-the 4th hydraulic fluid port; 24-the 7th hydraulic fluid port; 25-the 5th hydraulic fluid port; 26 the 6th hydraulic fluid ports; 27-spool first end; 28-spool second end; 29-cylinder body; 30-hydraulic cylinder end cover; 31-piston; 32-spool; 33-first groove; 34-second groove; 35-the 3rd groove; 36-the 4th groove; 37-first valve pocket window; 38-second valve pocket window; 39-the 3rd valve pocket window; 40-the 4th valve pocket window; 41-the 5th valve pocket window; 42-the 6th valve pocket window; 43-the 7th valve pocket window; 4-the 8th valve pocket window; 45-the 5th boss; 46-the 6th boss; 47-the 6th chamber; 48-A hydraulic fluid port; 49-B hydraulic fluid port; 50-first aperture; 51-second orifice; 52-first is protruding; 53-second is protruding.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in Figures 1 to 5, the present invention can automatically eliminate hydraulic cylinder piston skew rotary valve device mainly comprise valve body 3, spool 32, first valve pocket 5, second valve pocket 4, first end cap 1, second end cap 6.First end cap 1 and the second end cap 6 are installed together in the end at the two ends of valve body 3 and valve body 3 respectively.Second valve pocket 4 is placed in the chamber of valve body 3, and the first valve pocket 5 is placed in the chamber of the second valve pocket 4, and one end and first end cap 1 of the first valve pocket 5 are fixed, and the other end and second end cap 6 of the first valve pocket 5 are fixed, and spool 32 is placed in the chamber of the first valve pocket 5.As shown in Figure 1, Figure 2 and Figure 3, spool 32 is provided with the first boss 9, second boss 10, the 3rd boss 8 and the 4th boss 11, and the 3rd boss 8, first boss 9, second boss 10 and the 4th boss 11 are arranged on the direction of the second end cap 6 successively along from the first end cap 1.And adopt lip-type packing to seal between spool 32 and the first end cap 1, adopt lip-type packing to seal between spool 32 and the second end cap 6.Second end 28 of spool runs through and stretches out the second end cap 6, and the second end 28 of spool can be connected with electric machine main shaft by coupling, is realized the rotary motion of spool by electric machine main shaft band movable valve plug.As another embodiment of the invention, the second end 28 of spool also can be connected with the rotor of rotational rate electromagnet by coupling, is realized the rotary motion of spool by the rotor banding movable valve plug of rotational rate electromagnet.
As depicted in figs. 1 and 2, the first chamber 13 is formed between first boss 9 and the second boss 10, the wall of the valve body 3 in the first place, chamber 13 has the P hydraulic fluid port 19 that the first chamber 13 can be made to be communicated with oil supply system, and the fluid in oil supply system can enter the first chamber 13 by P hydraulic fluid port 19.The wall forming the valve body 3 at the second place, chamber 12, chamber 12, second between first boss 9 and the 3rd boss 8 has the T that the second chamber 12 can be made to be communicated with fuel tank
1return opening 18, the fluid entering into the second chamber 12 can pass through T
1return opening 18 flows back to fuel tank.The wall forming the 3rd place, chamber 14, chamber the 14, three valve body 3 between second boss 10 and the 4th boss 11 has the T that the 3rd chamber 14 can be made to be communicated with fuel tank
2return opening 20, the fluid entering into the 3rd chamber 14 can pass through T
2return opening 20 flows back to fuel tank.
As shown in Figure 1, Figure 2 and Figure 7, the wall of the valve body 3 at the first boss 9 place has the A hydraulic fluid port 48 that can be communicated with actuator, actuator's motion can be controlled by the fluid of A hydraulic fluid port 48.The wall of the valve body 3 at the second boss 10 place has the B hydraulic fluid port 49 that can be communicated with actuator, actuator's motion can be controlled by the fluid of B hydraulic fluid port 49.On a lateral section of the first boss 9, along the circumferential direction compartment of terrain has and can make T
1the first groove 33 that return opening 18 is communicated with A hydraulic fluid port 48, on the opposite side section of the first boss 9, along the circumferential direction compartment of terrain has second groove 34 that P hydraulic fluid port 19 can be made to be communicated with A hydraulic fluid port 48.On a lateral section of the second boss 10, along the circumferential direction compartment of terrain has the 3rd groove 35 that P hydraulic fluid port 19 can be made to be communicated with B hydraulic fluid port 49, and on the opposite side section of the second boss 10, along the circumferential direction compartment of terrain has and can make T
2the 4th groove 36 that return opening 20 is communicated with B hydraulic fluid port 49.First groove 33 is along the circumferential direction alternately arranged layout with the corresponding orthographic projection of the second groove 34 on the projection plane vertical with the medial axis of spool 32,3rd groove 35 is along the circumferential direction alternately arranged layout with the corresponding orthographic projection of the 4th groove 36 on the projection plane vertical with the medial axis of spool 32, first groove 33 is overlapped with the orthographic projection of the 3rd groove 35 on the projection plane vertical with the medial axis of spool 32, and the second groove 34 is overlapped with the orthographic projection of the 4th groove 36 on the projection plane vertical with the medial axis of spool 32.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 6 and Fig. 7, on the interior edge face of the first end cap 1 along the circumferential direction interval be provided with the first projection 52, first end face of the first valve pocket 5 along the circumferential direction interval be provided with the first aperture 50, first projection 52 is inserted in the first aperture 50 one to one, is transition fit between the first protruding 52 and first aperture 50.On the interior edge face of the second end cap 6 along the circumferential direction interval be provided with the second projection 53, second end face of the first valve pocket 5 along the circumferential direction interval be provided with second orifice 51, second projection 53 is inserted in second orifice 51 one to one, is transition fit between second protruding 53 and second orifice 51.
As depicted in figs. 1 and 2, the first valve pocket 5 is installed on the outer surface of spool 32, and the first valve pocket 5 and spool 32 are Spielpassung.First end face of the first valve pocket 5 and the internal surface close contact of the first end cap, second end face of the first valve pocket 5 and the internal surface close contact of the second end cap, and owing to being transition fit relation between the first protruding 52 and first aperture 50 and being transition fit relation between second protruding 53 and second orifice 51, the first valve pocket can not rotate and can not move along its axial direction along its circumferential direction.Second valve pocket 4 is installed on the outer surface of the first valve pocket 5, and the second valve pocket 4 can move relative to the axial reciprocating of the first valve pocket 5 along the first valve pocket.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, first valve pocket 5 the first groove 33, second groove 34, the 3rd groove 35 and the 4th groove 36 place position has corresponding first valve pocket window 37, second valve pocket window 38, the 3rd valve pocket window 39 and the 4th valve pocket window 40, first valve pocket window 37, second valve pocket window 38, the 3rd valve pocket window 39 is overlapped with the orthographic projection of the 4th valve pocket window 40 on the projection plane vertical with the medial axis of spool 32.Second valve pocket 4 has corresponding 5th valve pocket window 41, the 6th valve pocket window 42, the 7th valve pocket window 43 and the 8th valve pocket window the 44, five valve pocket window 41 in the position at the first valve pocket window 37, second valve pocket window 38, the 3rd valve pocket window 39 and the 4th valve pocket window 40 place, the 6th valve pocket window 42, the 7th valve pocket window 43 are overlapped with the orthographic projection of the 8th valve pocket window 44 on the projection plane vertical with the medial axis of spool 32.
As depicted in figs. 1 and 2, the wall forming the valve body 3 at the 4th place, chamber 15, chamber the 15, four between the first end face of the second valve pocket 4 and the internal surface of the first end cap 1 has the first hydraulic fluid port 17.The wall forming the valve body 3 at the 5th place, chamber 16, chamber the 16, five between second end face of the second valve pocket 4 and the interior edge face of the second end cap 6 has the second hydraulic fluid port 21.Can move right along the axis of the first valve pocket 5 under the promotion of the pressure oil of the second valve pocket 4 in the 4th chamber 15, can be moved to the left along the axis of the first valve pocket 5 under the promotion of the hydraulic oil of the second valve pocket 4 in the 5th chamber 16.
As shown in Figure 1, the piston 31 of oil hydraulic cylinder is provided with the 5th boss 45 and the 6th boss 46 along piston axial direction, the 6th chamber 47 is formed between 5th boss 45 and the 6th boss 46, the cylinder body 29 in the 6th place, chamber 47 has the 7th hydraulic fluid port 24 that can be connected with oil supply system, system fuel feeding enters the 6th chamber 47 by the 7th hydraulic fluid port 24.The cylinder body 29 at the 5th boss 45 place is provided with the 3rd hydraulic fluid port 22 and the 4th hydraulic fluid port the 23, five boss 45, forms zero lap between the 3rd hydraulic fluid port 22 and the 4th hydraulic fluid port 23 three.The cylinder body 29 at the 6th boss 46 place is provided with the 5th hydraulic fluid port 25 and the 6th hydraulic fluid port the 26, six boss 46, forms zero lap between the 5th hydraulic fluid port 25 and the 6th hydraulic fluid port 26 three.When the piston 31 of oil hydraulic cylinder is motionless and the cylinder body 29 of oil hydraulic cylinder moves right, namely when piston 31 left avertence, the first hydraulic fluid port 17 is communicated with the 4th hydraulic fluid port 23 on cylinder body 29, and the second hydraulic fluid port 21 is communicated with the 6th hydraulic fluid port 26 on cylinder body 29.When the piston 31 of oil hydraulic cylinder is motionless and the cylinder body 29 of oil hydraulic cylinder is moved to the left, namely when piston 31 right avertence, the first hydraulic fluid port 17 is communicated with the 3rd hydraulic fluid port 22 on cylinder body 29, and the second hydraulic fluid port 21 is communicated with the 5th hydraulic fluid port 25 on cylinder body 29.As another embodiment of the invention, when the cylinder body 29 of oil hydraulic cylinder is motionless and the piston 31 of oil hydraulic cylinder is moved to the left, namely when piston 31 left avertence, the first hydraulic fluid port 17 is communicated with the 4th hydraulic fluid port 23 on cylinder body 29, and the second hydraulic fluid port 21 is communicated with the 6th hydraulic fluid port on cylinder body 29; When the cylinder body 29 of oil hydraulic cylinder is motionless and the piston 31 of oil hydraulic cylinder moves right, namely when piston 31 right avertence, the first hydraulic fluid port 17 is communicated with the 3rd hydraulic fluid port 22 on cylinder body 29, and the second hydraulic fluid port 21 is communicated with the 5th hydraulic fluid port 25 on cylinder body 29.
As preferred version of the present invention, the first groove 33 on the first boss 9 is uniformly distributed along the circumferencial direction of the end face of the first boss 9, and the second groove 34 on the first boss 9 is uniformly distributed along the circumferencial direction of the end face of the first boss 9.The 3rd groove 35 on second boss 10 is uniformly distributed along the circumferencial direction of the end face of the second boss 10, and the 4th groove 36 on the second boss 10 is uniformly distributed along the circumferencial direction of the end face of the second boss 10.
As preferred version of the present invention, first valve pocket window 37 is uniformly distributed along the circumferencial direction of the first valve pocket 5, second valve pocket window 38 is uniformly distributed along the circumferencial direction of the first valve pocket 5,3rd valve pocket window 39 is uniformly distributed along the circumferencial direction of the first valve pocket 5, and the 4th valve pocket window 40 is uniformly distributed along the circumferencial direction of the first valve pocket 5.5th valve pocket window 41 is uniformly distributed along the circumferencial direction of the second valve pocket 4,6th valve pocket window 42 is uniformly distributed along the circumferencial direction of the second valve pocket 4,7th valve pocket window 43 is uniformly distributed along the circumferencial direction of the second valve pocket 4, and the 8th valve pocket window 44 is uniformly distributed along the circumferencial direction of the second valve pocket 4.First valve pocket window 37 is connected with the 5th valve pocket window 41, and the second valve pocket window 38 is connected with the 6th valve pocket window 42, and the 3rd valve pocket window 39 is connected with the 7th valve pocket window 43, and the 4th valve pocket window 40 is connected with the 8th valve pocket window 44.
As preferred version of the present invention, in real work, on the first end cap 1 and the second end cap 6, additional springs or bolt can limit the displacement of the second valve pocket 4, and the vibrational waveform of control piston or oil hydraulic cylinder.In the present invention, the first caging bolt 2 and the first end cap 1 are threaded connection, and the first caging bolt 2 stretches into the 4th chamber 15.Second caging bolt 7 and the second end cap 6 are threaded connection, and the second caging bolt stretches into the 5th chamber 16.
The working procedure that the present invention can eliminate the automatic elimination piston excursion of the rotary valve device of hydraulic cylinder piston skew is automatically: system fuel feeding enters the first chamber 13 by P hydraulic fluid port 19, when the second groove 34 is communicated with the second valve pocket window 38, the system fuel feeding entering the first chamber 13 flows to A hydraulic fluid port 48; When the 3rd groove 35 is communicated with the 3rd valve pocket 39, the system fuel feeding entering the first chamber 13 flows to B hydraulic fluid port 49.When system fuel feeding flows to A hydraulic fluid port 48, system fuel feeding enters the left side oil pocket of oil hydraulic cylinder by the first endoporus of the second groove 34, second valve pocket window 38, the 6th valve pocket window 42, A hydraulic fluid port 48, piston 31 successively, makes cylinder body 29 to left movement.Meanwhile, the hydraulic oil of oil pocket on the right side of oil hydraulic cylinder, flows into the 3rd chamber 14 by the second endoporus of piston 31, B hydraulic fluid port 49, the 8th valve pocket window 44, the 4th valve pocket window 40, the 4th groove 36 successively, passes through T
2return opening 20 flows back to fuel tank.When system fuel feeding flows to B hydraulic fluid port 49, system fuel feeding enters the right side oil pocket of oil hydraulic cylinder by the second endoporus of the 3rd groove 35, the 3rd valve pocket window 39, the 7th valve pocket window 43, B hydraulic fluid port 49, piston 31 successively, and cylinder body 29 is moved right.Meanwhile, the hydraulic oil of oil pocket on the left of oil hydraulic cylinder, flows into the second chamber 12 by the first endoporus of piston 31, A hydraulic fluid port 48, the 5th valve pocket window 41, first valve pocket window 37, first groove 33 successively, passes through T
1return opening 18 flows back to fuel tank.The side-to-side vibrations of oil hydraulic cylinder can be realized like this, but due to the restriction of machining accuracy, rotary valve cannot be accomplished to mate symmetry completely, simultaneously due to the sealing of oil hydraulic cylinder and the asymmetric of internal leakage, cause in the reciprocating motion of the pistons of oil hydraulic cylinder, the side of piston deflection oil hydraulic cylinder.
As shown in Figure 8 and Figure 9, hydraulic cylinder body 29 right avertence, relative piston 31 left avertence.Now, a system fuel feeding part enters the 6th chamber 47 by the 7th hydraulic fluid port 24, then enters the 4th chamber 15 by the 4th hydraulic fluid port 23, first hydraulic fluid port 17 successively.The hydraulic oil entering the 4th chamber 15 promotes the second valve pocket 4 and moves right.Meanwhile, the hydraulic oil in the 5th chamber 16 enters oil pocket on the right side of oil hydraulic cylinder by the second hydraulic fluid port 21, the 6th hydraulic fluid port 26 successively.Because the second valve pocket 4 moves right, the circulation area between the first valve pocket window 37 and the 5th valve pocket window 41 reduces, and the circulation area between the 3rd valve pocket window 39 and the 7th valve pocket window 43 reduces.Oil hydraulic cylinder is in vibration processes, and the hydraulic oil that system fuel feeding flows to B hydraulic fluid port 49 is fewer than the hydraulic oil flowing to A hydraulic fluid port 48, and namely the amplitude vibrated to the right of cylinder body 29 is less than the amplitude vibrated left, reaches the object automatically eliminating hydraulic cylinder piston skew.
As shown in Figure 10 and Figure 11, hydraulic cylinder body 29 left avertence, relative piston 31 right avertence.Now, a system fuel feeding part enters the 6th chamber 47 by the 7th hydraulic fluid port 24, and then enter the 5th chamber 16 by the 5th hydraulic fluid port 25, second hydraulic fluid port 21 successively, the hydraulic oil entering the 5th chamber 16 promotes the second valve pocket 4 to left movement.Meanwhile, the hydraulic oil in the 4th chamber 15 enters oil pocket on the left of oil hydraulic cylinder by the first hydraulic fluid port 17, the 3rd hydraulic fluid port 22 successively.Because the second valve pocket 4 is to left movement, the circulation area between the second valve pocket window 38 and the 6th valve pocket window 42 reduces, and the circulation area between the 4th valve pocket window 40 and the 8th valve pocket window 44 reduces.Oil hydraulic cylinder is in vibration processes, and the hydraulic oil that system fuel feeding flows to A hydraulic fluid port 48 is fewer than the hydraulic oil flowing to B hydraulic fluid port 49, and namely the amplitude vibrated left of cylinder body 29 is less than the amplitude vibrated to the right, reaches the object automatically eliminating hydraulic cylinder piston skew.
Content the enumerating just to the way of realization of inventive concept that statement implemented by this specification; concrete mode shown in protection scope of the present invention should not be regarded as being confined to implementing, and those skilled in the art should be involved in conceive the equivalent technologies mode that can think deeply according to the present invention.
Claims (5)
1. automatically can eliminate the rotary valve device of hydraulic cylinder piston skew for one kind, it is characterized in that: comprise valve body, spool, the first valve pocket, the second valve pocket, the first end cap and the second end cap, spool is provided with the first boss, the second boss, the 3rd boss and the 4th boss, and the 3rd boss, the first boss, the second boss and the 4th direction of boss along the first end cap to the second end cap are arranged successively; Second end of spool runs through and stretches out the second end cap; Second end of described spool is connected with the main shaft of motor by coupling or is connected with the rotor of rotational rate electromagnet;
Form the first chamber between first boss of described spool and the second boss, the valve body wall at the first place, chamber has the P filler opening that the first chamber can be made to be communicated with oil supply system; Form the second chamber between first boss and the 3rd boss, the valve body wall at the second place, chamber has the T that the second chamber can be made to be communicated with mailbox
1return opening; Form the 3rd chamber between second boss and the 4th boss, the valve body wall at the 3rd place, chamber has the T that the 3rd chamber can be made to be communicated with mailbox
2return opening;
The valve body wall at the first boss place of described spool has the A hydraulic fluid port that can be communicated with actuator, the valve body wall at the second boss place of described spool has the B hydraulic fluid port that can be communicated with actuator;
On one side end face of described first boss, along the circumferential direction compartment of terrain has and can make T
1the first groove that return opening is communicated with A hydraulic fluid port, on the opposite side end face of described first boss, along the circumferential direction compartment of terrain has second groove that P filler opening can be made to be communicated with A hydraulic fluid port; On one side end face of described second boss, along the circumferential direction compartment of terrain has the 3rd groove that P filler opening can be made to be communicated with B hydraulic fluid port, and on the opposite side end face of described second boss, along the circumferential direction compartment of terrain has and can make T
2the 4th groove that return opening is communicated with B hydraulic fluid port; First groove is along the circumferential direction alternately arranged layout with the orthographic projection of the second corresponding groove on the projection plane vertical with the medial axis of spool, 3rd groove is along the circumferential direction alternately arranged layout with the corresponding orthographic projection of the 4th groove on the projection plane vertical with the medial axis of spool, first groove is overlapped with the orthographic projection of the 3rd groove on the projection plane vertical with the medial axis of spool, and the second groove is overlapped with the orthographic projection of the 4th groove on the projection plane vertical with the medial axis of spool;
On the interior edge face of the first end cap, along the circumferential direction compartment of terrain is provided with the first projection, first end face of the first valve pocket is along the circumferential direction provided with the first aperture in compartment of terrain, described first projection is inserted in described first aperture correspondingly, is transition fit between the first projection and the first aperture; The interior edge face of the second end cap is along the circumferential direction gone up compartment of terrain and be provided with the second projection, second end face of the first valve pocket is along the circumferential direction provided with second orifice in compartment of terrain, described second projection is inserted in described second orifice correspondingly, is transition fit between the second projection and second orifice;
First valve pocket is installed on the outer surface of spool, is Spielpassung between the first valve pocket and spool; Second valve pocket is installed on the outer surface of the first valve pocket, and the second valve pocket can move relative to the axial reciprocating of the first valve pocket along the first valve pocket;
First valve pocket has corresponding first valve pocket window, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window in the position at described first groove, the second groove, the 3rd groove and the 4th groove place, and the first valve pocket window, the second valve pocket window, the 3rd valve pocket window are overlapped with the orthographic projection of the 4th valve pocket window on the projection plane vertical with the medial axis of spool; Second valve pocket has corresponding 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window and the 8th valve pocket window in the position at the first valve pocket window, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window place; 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window are overlapped with the orthographic projection of the 8th valve pocket window on the projection plane vertical with the medial axis of spool;
Form the 4th chamber between first end face of described second valve pocket and the interior edge face of the first end cap, the valve body wall at the 4th place, chamber has the first hydraulic fluid port; Form the 5th chamber between second end face of the second valve pocket and the interior edge face of the second end cap, the valve body wall at the 5th place, chamber has the second hydraulic fluid port; Can move to the direction of the second end cap along the axial of the first valve pocket under the hydraulic oil of the second valve pocket in the 4th chamber promotes, can move to the direction of the first end cap along the axial of the first valve pocket under the promotion of the hydraulic oil of the second valve pocket in the 5th chamber;
Be axially arranged with the 5th step and the 6th step along piston on the piston of oil hydraulic cylinder, form the 6th chamber between described 5th step and the 6th step, the cylinder body at the 6th place, chamber has the 7th hydraulic fluid port that can be connected with oil supply system; The cylinder body of the oil hydraulic cylinder at described 5th step place is provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port, described 5th step, forms zero lap between the 3rd hydraulic fluid port and the 4th hydraulic fluid port three; The cylinder body of the oil hydraulic cylinder at described 6th step place is provided with the 5th hydraulic fluid port and the 6th hydraulic fluid port, described 6th step, forms zero lap between the 5th hydraulic fluid port and the 6th hydraulic fluid port three;
When the motionless and cylinder body of oil hydraulic cylinder of the piston of oil hydraulic cylinder to move to the 6th direction, boss place or the cylinder body of oil hydraulic cylinder is motionless and the piston of oil hydraulic cylinder moves to the 5th direction, boss place time, described first hydraulic fluid port is communicated with the 4th hydraulic fluid port on cylinder body and described second hydraulic fluid port is communicated with the 6th hydraulic fluid port on cylinder body; When the motionless and cylinder body of oil hydraulic cylinder of the piston of oil hydraulic cylinder to move to the direction at the 5th boss place or the cylinder body of oil hydraulic cylinder is motionless and the piston of oil hydraulic cylinder moves to the 6th direction, boss place time, described first hydraulic fluid port is communicated with the 3rd hydraulic fluid port on cylinder body and described second hydraulic fluid port is communicated with the 5th hydraulic fluid port on cylinder body.
2. the rotary valve device automatically eliminating hydraulic cylinder piston skew according to claim 1, it is characterized in that: described first groove and/or the second groove are uniformly distributed along the circumferencial direction of the end face of described first boss, the 3rd groove and/or the 4th groove are along being circumferentially uniformly distributed of end face of described second boss.
3. the rotary valve device automatically eliminating hydraulic cylinder piston skew according to claim 1 and 2, is characterized in that: described first valve pocket window, the second valve pocket window, the 3rd valve pocket window and the 4th valve pocket window are uniformly distributed along the circumferencial direction of described first valve pocket separately respectively; Described 5th valve pocket window, the 6th valve pocket window, the 7th valve pocket window and the 8th valve pocket window are uniformly distributed along the circumferencial direction of described second valve pocket separately respectively; Described first valve pocket window is communicated with the 5th valve pocket window, and described second valve pocket window is communicated with the 6th valve pocket window, and described 3rd valve pocket window is communicated with the 7th valve pocket window, and described 4th valve pocket window is communicated with the 8th valve pocket window.
4. the rotary valve device automatically eliminating hydraulic cylinder piston skew according to claim 1 and 2, it is characterized in that: also comprise the first caging bolt and the second caging bolt, described first caging bolt is threaded with the first end cap, and the first caging bolt stretches into described 4th chamber; Described second caging bolt is threaded with the second end cap, and the second caging bolt stretches into described 5th chamber.
5. the rotary valve device automatically eliminating hydraulic cylinder piston skew according to claim 3, it is characterized in that: also comprise the first caging bolt and the second caging bolt, described first caging bolt is threaded with the first end cap, and the first caging bolt stretches into described 4th chamber; Described second caging bolt is threaded with the second end cap, and the second caging bolt stretches into described 5th chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265250.3A CN103291962B (en) | 2013-06-26 | 2013-06-26 | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265250.3A CN103291962B (en) | 2013-06-26 | 2013-06-26 | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103291962A CN103291962A (en) | 2013-09-11 |
| CN103291962B true CN103291962B (en) | 2015-05-20 |
Family
ID=49093303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310265250.3A Active CN103291962B (en) | 2013-06-26 | 2013-06-26 | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103291962B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438243B (en) * | 2013-09-24 | 2015-05-13 | 淮海工学院 | Incremental electro-hydraulic digital flow control valve with double valve cores rotating oppositely |
| CN103671328B (en) * | 2013-12-21 | 2015-12-09 | 浙江大学 | A kind of automatic reverse rotary valve |
| CN104564881B (en) * | 2014-12-30 | 2016-06-08 | 浙江大学台州研究院 | Spool transfer composite hydraulic excitation controlling valve |
| CN109578624B (en) * | 2018-12-20 | 2024-01-30 | 油威力液压科技股份有限公司 | Fluid automatic control reversing device |
| CN110608298A (en) * | 2019-09-25 | 2019-12-24 | 昆山海芯机电科技有限公司 | Manual reversing valve with enhanced sealing |
| CN110553081A (en) * | 2019-09-29 | 2019-12-10 | 上海羿弓精密科技有限公司 | Hydraulic reversing valve and hydraulic reversing device |
| CN116498623B (en) * | 2023-03-29 | 2023-12-15 | 邵阳先进制造技术研究院有限公司 | High-precision control valve for moving cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470913B1 (en) * | 1998-12-22 | 2002-10-29 | Raymond D. Woodworth | Balanced rotary servovalve |
| CN102537419A (en) * | 2011-12-26 | 2012-07-04 | 浙江工业大学 | Tee high-frequency electro-hydraulic exciting vibration valve |
| CN103075381A (en) * | 2013-01-22 | 2013-05-01 | 浙江大学 | Dual-control type four-way reversing valve |
| CN103089733A (en) * | 2013-01-22 | 2013-05-08 | 浙江大学 | Multi-control type variable damping double-freedom-degree valve core rotation type four-way reversing valve |
| CN103104568A (en) * | 2013-01-22 | 2013-05-15 | 浙江大学 | Internally piloting type two-freedom-degree valve core rotation type four-way reversing valve |
| CN203384420U (en) * | 2013-06-26 | 2014-01-08 | 浙江大学 | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7270149B2 (en) * | 2005-10-05 | 2007-09-18 | Mediland Enterprise Corporation | Rotary valve assembly |
-
2013
- 2013-06-26 CN CN201310265250.3A patent/CN103291962B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470913B1 (en) * | 1998-12-22 | 2002-10-29 | Raymond D. Woodworth | Balanced rotary servovalve |
| CN102537419A (en) * | 2011-12-26 | 2012-07-04 | 浙江工业大学 | Tee high-frequency electro-hydraulic exciting vibration valve |
| CN103075381A (en) * | 2013-01-22 | 2013-05-01 | 浙江大学 | Dual-control type four-way reversing valve |
| CN103089733A (en) * | 2013-01-22 | 2013-05-08 | 浙江大学 | Multi-control type variable damping double-freedom-degree valve core rotation type four-way reversing valve |
| CN103104568A (en) * | 2013-01-22 | 2013-05-15 | 浙江大学 | Internally piloting type two-freedom-degree valve core rotation type four-way reversing valve |
| CN203384420U (en) * | 2013-06-26 | 2014-01-08 | 浙江大学 | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103291962A (en) | 2013-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103291962B (en) | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset | |
| CN104564881B (en) | Spool transfer composite hydraulic excitation controlling valve | |
| CN103089733B (en) | Multi-control type variable damping double-freedom-degree valve core rotation type four-way reversing valve | |
| CN103104568B (en) | Internally piloting type two-freedom-degree valve core rotation type four-way reversing valve | |
| JP6234578B2 (en) | Forklift, hydraulic cylinder assembly and hydraulic device thereof | |
| CN108131204B (en) | A kind of fuel shear valve with self-locking function | |
| TW201617529A (en) | Rotary actuator | |
| CN103075381B (en) | Dual-control type four-way reversing valve | |
| CN203384420U (en) | Rotary valve device capable of automatically eliminating hydraulic cylinder piston offset | |
| JP6240983B2 (en) | Fluid pressure cylinder | |
| CN106091010B (en) | A kind of engine chamber duplex burner valve | |
| CN102493969B (en) | Hydraulic cylinder with double piston rods | |
| CN203176030U (en) | Multi-control variable damping double-freedom-degree valve core rotary four-way reversing valve | |
| CN102913494B (en) | Four-way reversing valve with rotary valve core | |
| CN104196522A (en) | Balancing piston seal assembly of mud pulser | |
| CN204511865U (en) | Plunger assembly and water lubrication crankshaft type high-pressure plunger pump | |
| CN103671328B (en) | A kind of automatic reverse rotary valve | |
| CN203685734U (en) | Automatic reversing rotary valve | |
| CN109578624B (en) | Fluid automatic control reversing device | |
| CN203176029U (en) | Double-control four-way reversing valve | |
| CN104481720A (en) | Diesel engine capable of working reliably | |
| CN203176031U (en) | Internal-control type valve core rotating type four-way reversing valve with two degrees of freedom | |
| CN203867870U (en) | Cavity-valve integrated reciprocating pump component | |
| CN203051283U (en) | Introcontrol type four-way reversing valve | |
| CN204299717U (en) | The telescopic piston ring of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gong Guofang Inventor after: Zhou Hongbin Inventor after: Han Dong Inventor after: Liu Yi Inventor after: Zhou Tianyu Inventor after: Yang Huayong Inventor before: Gong Guofang Inventor before: Zhou Hongbin Inventor before: Han Dong Inventor before: Liu Yi Inventor before: Yang Huayong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GONG GUOFANG ZHOU HONGBIN HAN DONG LIU YI YANG HUAYONG TO: GONG GUOFANG ZHOU HONGBIN HAN DONG LIU YI ZHOU TIANYU YANG HUAYONG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |