CN105952951A - Solenoid directional valve and push rod and armature structure thereof - Google Patents
Solenoid directional valve and push rod and armature structure thereof Download PDFInfo
- Publication number
- CN105952951A CN105952951A CN201610500750.4A CN201610500750A CN105952951A CN 105952951 A CN105952951 A CN 105952951A CN 201610500750 A CN201610500750 A CN 201610500750A CN 105952951 A CN105952951 A CN 105952951A
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- China
- Prior art keywords
- push rod
- spool
- valve body
- armature
- boss
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a solenoid directional valve and a push rod and armature structure thereof. The push rod and armature structure comprises a push rod and an armature, wherein a valve element connecting section is arranged at one end of the push rod; an armature connecting section is arranged at the other end of the push rod; and a push rod radial pin hole is formed in the valve element connecting section of the push rod. The push rod and armature structure is characterized in that the armature connecting section of the push rod is provided with left-hand threads, a left-hand threaded hole is formed in one end of the armature, and the left-hand threads of the armature connecting section of the push rod is in left-hand thread connection with the left-hand threaded hole in one end of the armature. By the push rod and armature structure, the push rod is effectively prevented against being separated from the armature, the long-time existing circumstance that the push rod and the armature in the prior art are separated from each other due to counterclockwise rotation of the push rod is avoided, furthermore, the long-time existing circumstance of cracking caused by the reason that the push rod and the armature are welded integrally in the prior art is avoided, and therefore, work reliability is greatly improved.
Description
Technical field
The present invention relates to a kind of solenoid directional control valve and push rod armature structure, the push rod armature structure of the solenoid directional control valve being specifically related on a kind of engineering truck.
Background technology
nullExisting engineering truck (fork truck、Tractor、Loader etc.) used by solenoid directional control valve include valve component and electromagnet assembly，Wherein，Described electromagnet assembly includes push rod armature structure，Described push rod armature structure includes push rod and armature，And push rod is connected or welded with armature right-handed thread，And both connected modes of push rod and armature all have certain shortcoming，If push rod is connected with armature right-handed thread，Under solenoid directional control valve working condition，During the spool of described valve component moves axially，Because of the effect of oil pressure in the valve body of valve component，Spool is occurred counterclockwise rotate，Described spool is during rotating counterclockwise，Push rod will be driven to followed by spool by straight pin also to occur to rotate counterclockwise，So，Will result in and occur to loosen phenomenon because push rod occurs to rotate counterclockwise between push rod and armature，Make the situation that push rod separates with armature，Have a strong impact on the normal work of solenoid directional control valve；If push rod is welded as a whole with armature, although the situation that push rod separates with armature can be overcome, but push rod is welded with armature and easily causes the situation that weld occurs to ftracture, and push rod and armature generation qualitative change can be caused, also can be substantially reduced the reliability of product work.
Summary of the invention
The first object of the present invention is: provide a kind of effective anti-throw-out lever to separate with armature, and the push rod armature structure that functional reliability is high.
The technical scheme realizing above-mentioned first purpose is: the push rod armature structure of a kind of solenoid directional control valve, including push rod and armature, one end of described push rod has spool linkage section, the other end of push rod has armature linkage section, the spool linkage section of described push rod is provided with push rod radially pin-and-hole, its innovative point is: the armature linkage section of described push rod has left hand thread, one end of described armature has left-handed spiral shell mosquito hole, and the left hand thread of the armature linkage section of described push rod is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature one end.
In above-mentioned first technical scheme, described push rod has the banking stop being integrated mutually with it, and banking stop offsets with armature, described banking stop is along the circumferential direction provided with two or more uniform gap.
In above-mentioned first technical scheme, the spool linkage section of described push rod having spacing preiection at banking stop, described spacing preiection is that annular stop is protruding.
The second object of the present invention is: provide a kind of effective anti-throw-out lever to separate with armature, and the solenoid directional control valve that functional reliability is high.
The technical scheme realizing above-mentioned second purpose is: a kind of solenoid directional control valve, including valve component and electromagnet assembly；
Described valve component includes valve body, spool and valve body end cap；
Described valve body includes the first hydraulic fluid port, the second hydraulic fluid port, oil return opening, oil-in and the valve body main aperture being axially arranged with along it, and along valve body inner wall of main hole the first oil duct, the second oil duct and the 3rd oil duct the most arranged apart, described first hydraulic fluid port and the first oil duct are connected, second hydraulic fluid port and the 3rd oil duct are connected, oil-in and the second oil duct are connected, and described first oil duct, the second oil duct and the 3rd oil duct are all connected with valve body main aperture；
Being provided with oil return runner in described valve body, described oil return opening is connected with oil return runner, and the two ends of oil return runner lay respectively at the first oil duct and the outside of the 3rd oil duct, and the two ends of oil return runner are connected with valve body main aperture；
One end of described valve body is fixing with electromagnet assembly to be connected, and described valve body end cap is tightly connected with the other end of valve body；
In described valve body main aperture between the two ends of oil return runner, the valve body first step of the most axially spaced layout, valve body second step, valve body the 3rd step and valve body the 4th step；
Described spool is located in the valve body main aperture of valve body, and the middle part of spool has spool the first boss and spool second boss of axially spaced layout, and is equipped with logical pasta on spool the first boss and spool the second boss；
Described electromagnet assembly includes the first iron core, the second iron core, coil, back-moving spring, yoke, magnetic shield, magnetic guiding loop and push rod armature structure；
Described push rod armature structure includes that push rod and armature, one end of described push rod have spool linkage section, and the other end of push rod has armature linkage section, and the spool linkage section of described push rod is provided with push rod radially pin-and-hole,
The two ends of described magnetic shield load respectively or be welded on the first iron core and the second iron core, and magnetic shield is positioned at the periphery of armature, described coil is located at equipped with magnetic guiding loop between the periphery of magnetic shield, and two coils, and described yoke is located at the periphery of two coils；
One end of described push rod passes the first iron core, and one end of the spool linkage section of push rod and spool is fixing is connected, one end of described spool is set with spring base, it is set with back-moving spring on described spring base, and the side of one end of back-moving spring and spring base offsets, the pad that the other end of described back-moving spring and push rod are provided with offsets；Its innovative point is:
The armature linkage section of described push rod has left hand thread, and one end of described armature has left-handed spiral shell mosquito hole, and the left hand thread of the armature linkage section of described push rod is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature one end.
In above-mentioned second technical scheme, described push rod has the banking stop being integrated mutually with it, and banking stop offsets with armature, described banking stop is along the circumferential direction provided with two or more uniform gap；Described first iron core is provided with axial stepped hole, and pad is located in stepped hole, and the spool linkage section of described push rod has spacing preiection at banking stop, and described spacing preiection is against the side of pad, and described spacing preiection is that annular stop is protruding.
In above-mentioned second technical scheme, one end of described spool has connection sleeve pipe, and connection sleeve pipe is provided with sleeve pipe radially pin-and-hole, the spool linkage section of described push rod inserts in the connection sleeve pipe of spool, and is passed sleeve pipe radially pin-and-hole and push rod radially pin-and-hole by elastic cylindrical pin and connect fixing to spool and push rod；Described elastic cylindrical pin is straight trough elastic cylindrical pin, or rolls elastic cylindrical pin, or profile of tooth elastic cylindrical pin.
In above-mentioned second technical scheme, described valve body end cap has end segments and thread segment, the diameter of described end segments is more than the diameter of thread segment, and thread segment is connected with the threaded one end of the valve body main aperture of valve body, and the outer face of described end segments has axial inner hexagonal hole；There is annular groove, equipped with sealing ring at the annular groove between described end segments and thread segment between described end segments and thread segment.
In above-mentioned second technical scheme, the two ends of described spool are also respectively provided with the spool mat woven of fine bamboo strips three boss and spool the 4th boss；
Oil pressure balance runner it is additionally provided with in described valve body, the two ends of described oil pressure balance runner lay respectively at the outside at oil return runner two ends, and the two ends of oil pressure balance runner are connected with valve body main aperture, the two ends of valve body inner valve body main aperture are respectively equipped with valve body the 5th step and valve body the 6th step, valve body the 5th step and valve body the 6th step the most vertically and lay respectively at outside and the inner side at oil pressure balance runner two ends at oil return runner two ends；
The spool mat woven of fine bamboo strips three boss and spool the 4th boss at described spool two ends are slidably matched with corresponding valve body the 5th step and valve body the 6th step respectively；
The opposite side of described spring base can offset with valve body the 6th step and/or spool the 4th boss.
In above-mentioned second technical scheme, it is equipped with balancing slit on the outer wall of described spool the first boss, spool the second boss, the spool mat woven of fine bamboo strips three boss and spool the 4th boss, wherein it is equipped with two or more logical pasta on spool the first boss and spool the second boss, logical pasta is to form logical hydraulic fluid port between plane or cancave cambered surface, and the inwall of logical pasta and valve body main aperture.
In above-mentioned second technical scheme; described electromagnet assembly also includes insulating protective layer; insulating protective layer is coated on the periphery of the first iron core and yoke, is equipped with dust ring between one end and the first iron core and the valve body of insulating protective layer and between the other end of insulating protective layer and the second iron core and yoke；Described second iron core is provided with installing hole and equipped with driving handle, is provided with sealing ring between periphery and the installing hole of the shank of described driving handle.
The good effect that the present invention is had is: after using solenoid directional control valve and the push rod armature structure thereof of the present invention, owing to the armature linkage section of described push rod has left hand thread, one end of described armature has left-handed spiral shell mosquito hole, the left hand thread of the armature linkage section of described push rod is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature one end, so, not only overcome the situation causing both to separate because push rod occurs to rotate counterclockwise between push rod with armature in prior art for a long time, and also overcome for a long time in prior art push rod and armature be welded as a whole the cracking situation caused, substantially increase the reliability of work.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of the present invention；
Fig. 2 is the A-A cross-sectional schematic of Fig. 1；
Fig. 3 is the B-B cross-sectional schematic of Fig. 1；
Fig. 4 is that the right side of Fig. 1 regards schematic diagram；
Fig. 5 is the C-C cross-sectional schematic of Fig. 1；
Fig. 6 is the E direction view of Fig. 1；
Fig. 7 is the F-F cross-sectional schematic of Fig. 1；
Fig. 8 is the G-G cross-sectional schematic of Fig. 1;
Fig. 9 is the push rod armature structure schematic diagram of the present invention；
Figure 10 is the left view schematic diagram of Fig. 9；
Figure 11 is the pusher structure schematic diagram of the present invention；
Figure 12 is the spool armature attachment structure schematic diagram of the present invention；
Figure 13 is the D-D cross-sectional schematic of Figure 12；
Figure 14 is the structural representation of the straight trough elastic cylindrical pin of the present invention；
Figure 15 is the schematic side view of Figure 14；
Figure 16 be the present invention roll elastic cylindrical pin；
Figure 17 is the schematic side view of Figure 16；
Figure 18 is the profile of tooth elastic cylindrical pin of the present invention；
Figure 19 is the H-H cross-sectional schematic of Figure 18；
Figure 20 is the structural representation of the valve body end cap of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and the embodiment that is given, the present invention is further illustrated, but is not limited thereto.
Embodiment 1
Such as Fig. 9, 10, shown in 11, a kind of push rod armature structure of solenoid directional control valve, including push rod 4-3-2 and armature 4-3, one end of described push rod 4-3-2 has spool linkage section 4-3-21, the other end of push rod 4-3-2 has armature linkage section 4-3-22, the spool linkage section 4-3-21 of described push rod 4-3-2 is provided with push rod radially pin-and-hole 4-3-23, the armature linkage section 4-3-22 of described push rod 4-3-2 has left hand thread, one end of described armature 4-3 has left-handed spiral shell mosquito hole, the left hand thread of the armature linkage section 4-3-22 of described push rod 4-3-2 is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature 4-3 one end.
As shown in Fig. 9,10,11, there is on described push rod 4-3-2 the banking stop 5 being integrated mutually with it, and banking stop 5 offsets with armature 4-3, owing to push rod and banking stop are integral type structure, on the one hand neglected loading will not occur, on the other hand, integral structure makes banking stop be not susceptible to deformation, improves its perpendicularity, increasing friction force, make the phenomenon that banking stop will not loosen, and improve efficiency of assembling.Again due to the present invention and solenoid directional control valve support the use time, go rancid for convenience so that the oil in the valve body of solenoid directional control valve enters in armature, and described banking stop 5 is along the circumferential direction provided with two or more uniform gap 5-1.
Such as Fig. 9, shown in 11, for the ease of offseting with spring shim, it is that annular stop is protruding that the spool linkage section 4-3-21 of described push rod 4-3-2 has at banking stop 5 spacing preiection 4-3-1, described spacing preiection 4-3-1.
Embodiment 2
As shown in Fig. 1 ~ 20, a kind of solenoid directional control valve, including valve component and electromagnet assembly；Described valve component includes valve body 1, spool 2 and valve body end cap 3；
Described valve body 1 includes the first hydraulic fluid port 1-4, the second hydraulic fluid port 1-5, oil return opening 1-6, oil-in 1-7 and the valve body main aperture 1-8 being axially arranged with along it, and along valve body main aperture 1-8 inwall the first oil duct 1-1, the second oil duct 1-2 and the 3rd oil duct 1-3 the most arranged apart, described first hydraulic fluid port 1-4 and the first oil duct 1-1 is connected, second hydraulic fluid port 1-5 and the 3rd oil duct 1-3 is connected, oil-in 1-7 and the second oil duct 1-2 is connected, and described first oil duct 1-1, the second oil duct 1-2 and the 3rd oil duct 1-3 are all connected with valve body main aperture 1-8；
Being provided with oil return runner 1-9, described oil return opening 1-6 in described valve body 1 to be connected with oil return runner 1-9, the two ends of oil return runner 1-9 lay respectively at the first oil duct 1-1 and the outside of the 3rd oil duct 1-3, and the two ends of oil return runner 1-9 are connected with valve body main aperture 1-8；
One end of described valve body 1 is fixing with electromagnet assembly 4 to be connected, and valve body end cap 3 is tightly connected with the other end of valve body 1；
In described valve body main aperture 1-8 between the two ends of oil return runner 1-9, the valve body first step 1-11 of the most axially spaced layout, valve body second step 1-12, valve body the 3rd step 1-13 and valve body the 4th step 1-14；
Described spool 2 is located in the valve body main aperture 1-8 of valve body 1, and the middle part of spool 2 has spool the first boss 2-1 and spool the second boss 2-2 of axially spaced layout, and is equipped with logical pasta 2-6 on spool the first boss 2-1 and spool the second boss 2-2；
Described electromagnet assembly 4 includes the first iron core 4-1, the second iron core 4-2, coil 4-4, back-moving spring 4-5, yoke 4-6, magnetic shield 7, magnetic guiding loop 8 and push rod armature structure；
Described push rod armature structure includes push rod 4-3-2 and armature 4-3, one end of described push rod 4-3-2 has spool linkage section 4-3-21, the other end of push rod 4-3-2 has the spool linkage section 4-3-21 of armature linkage section 4-3-22, described push rod 4-3-2 and is provided with push rod radially pin-and-hole 4-3-23
The two ends load respectively of described magnetic shield 7 or be welded on the first iron core 4-1 and the second iron core 4-2, and magnetic shield 7 is positioned at the periphery of armature 4-3, described coil 4-4 is located at equipped with magnetic guiding loop 8 between the periphery of magnetic shield 7, and two coil 4-4, and described yoke 4-6 is located at the periphery of two coil 4-4；
One end of described push rod 4-3-2 passes the first iron core 4-1, and the spool linkage section 4-3-21 of push rod 4-3-2 fixes with one end of spool 2 and is connected, one end of described spool 2 is set with spring base 6, it is set with back-moving spring 4-5 on described spring base 6, and the side of one end of back-moving spring 4-5 and spring base 6 offsets, the pad 11 that the other end of described back-moving spring 4-5 and push rod 4-3-2 are provided with offsets；
The armature linkage section 4-3-22 of described push rod 4-3-2 has left hand thread, one end of described armature 4-3 has left-handed spiral shell mosquito hole, and the left hand thread of the armature linkage section 4-3-22 of described push rod 4-3-2 is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature 4-3 one end.
As shown in Fig. 9,10,11, described push rod 4-3-2 has the banking stop 5 being integrated mutually with it, and banking stop 5 offsets with armature 4-3, described banking stop 5 is along the circumferential direction provided with two or more uniform gap 5-1；Described first iron core 4-1 is provided with axial stepped hole 4-1-1, and pad 11 is located in stepped hole 4-1-1, at banking stop 5, there is spacing preiection 4-3-1 on the spool linkage section 4-3-21 of described push rod 4-3-2, described spacing preiection 4-3-1 is against the side of pad 11, and described spacing preiection 4-3-1 is that annular stop is protruding.
As shown in Figure 12 ~ 17, one end of described spool 2 has connection sleeve pipe 2-8, and connection sleeve pipe 2-8 is provided with sleeve pipe radially pin-and-hole 2-9, the spool linkage section 4-3-21 of described push rod 4-3-2 inserts in the connection sleeve pipe 2-8 of spool 1, and and is connected fixing to spool 2 and push rod 4-3-2 through sleeve pipe radially pin-and-hole 2-9 and push rod radially pin-and-hole 4-3-23 by elastic cylindrical pin 12；Described elastic cylindrical pin 12 is straight trough elastic cylindrical pin, or rolls elastic cylindrical pin, or profile of tooth elastic cylindrical pin.Owing to elastic cylindrical pin itself has certain elastic force, it is possible to reduce size and the processing request of pin-and-hole on spool and push rod, therefore, improve the efficiency of assembling of spool and push rod, be elastic product due to described elastic cylindrical pin again so that after both assemblings, there is certain pretightning force, difficult drop-off
Owing to having inner hexagonal hole on the valve body of described solenoid directional control valve, valve component and electromagnet assembly the used securing member that is assembled into one is all that hexagon socket head cap screw 13(is as shown in Fig. 1,4,6).As shown in figure 20, described valve body end cap 3 has end segments 3-1 and thread segment 3-2, the diameter of the described end segments 3-1 diameter more than thread segment 3-2, and the threaded one end of thread segment 3-2 and the valve body main aperture 1-8 of valve body 1 is connected, the outer face 3-1-2 of described end segments 3-1 has axial inner hexagonal hole 3-1-1；There is annular groove 3-3, equipped with sealing ring at the annular groove 3-3 between described end segments 3-1 and thread segment 3-2 between described end segments 3-1 and thread segment 3-2.Therefore, by improving the structure of valve body end cap, it is possible to reduce the kind of the assembling tool of solenoid directional control valve, meanwhile, it is also convenient for attendant and goes out to carry and do maintenance work, improve the versatility of assembling tool；Owing to without using needle-nose pliers the assembling of valve body end cap and valve body to be assembled, the pincers point having evaded needle-nose pliers in prior art occurs the situation of fracture, again owing to using inner hexagon spanner to assemble, thus the advantage such as it is big to have torsion, quick detachable.
As it is shown in figure 1, the two ends of described spool 2 are also respectively provided with the spool mat woven of fine bamboo strips three boss 2-3 and spool the 4th boss 2-4；Oil pressure balance runner 1-10 it is additionally provided with in described valve body 1, the two ends of described oil pressure balance runner 1-10 lay respectively at the outside at oil return runner 1-9 two ends, and the two ends of oil pressure balance runner 1-10 are connected with valve body main aperture 1-8, the two ends of valve body 1 inner valve body main aperture 1-8 are respectively equipped with valve body the 5th step 1-15 and valve body the 6th step 1-16, valve body the 5th step 1-15 and valve body the 6th step 1-16 the most vertically and lay respectively at outside and the inner side at oil pressure balance runner 1-10 two ends at oil return runner 1-9 two ends；The spool mat woven of fine bamboo strips three boss 2-3 and spool the 4th boss 2-4 at described spool 2 two ends are slidably matched with corresponding valve body the 5th step 1-15 and valve body the 6th step 1-16 respectively；The opposite side of described spring base 6 can offset with valve body the 6th step 1-16 and/or spool the 4th boss 2-4.So, an independent oil pressure balance runner that spool two ends oil pressure can be played balanced action it is provided with in making the valve body of the present invention, oil return runner and oil pressure balance runner are isolated by physics mode, so, pressure oil is during oil return, pressure oil is circulated by oil return runner, avoid pollutant and enter the inside of electromagnet assembly, pollutant would not be allowed to be blocked the inside of electromagnet assembly, also the electromagnetic force of electromagnet assembly would not be consumed, not only increase the dependability of the present invention, and make service life long；Meanwhile, not only will there is gap between the boss of two ends of spool with corresponding valve body step, and oil film between gap, will be produced, it is possible to play sealing function.The present invention block contaminant can enter electromagnet assembly, improves dependability, and service life is long.
As shown in Fig. 1,2,3,5,12, logical pasta be for the ease of pressure oil at a runner to the flowing of another runner, it is equipped with balancing slit 2-7 on the outer wall of described spool the first boss 2-1, spool the second boss 2-2, the spool mat woven of fine bamboo strips three boss 2-3 and spool the 4th boss 2-4, wherein it is equipped with two or more logical pasta 2-6 on spool the first boss 2-1 and spool the second boss 2-2, logical pasta 2-6 is plane or cancave cambered surface, and forms logical hydraulic fluid port 1-8-1 between the inwall of logical pasta 2-6 and valve body main aperture 1-8.
As shown in Figure 1; once the dirt in fluid makes armature or spool block; armature can be promoted by driving handle and indirectly promote spool to move; make emergency processing effect; described electromagnet assembly 4 also includes insulating protective layer 4-7; insulating protective layer 4-7 is coated on the first iron core 4-1 and the periphery of yoke 4-6, is equipped with dust ring 10 between one end and the first iron core 4-1 and the valve body 1 of insulating protective layer 4-7 and between the other end of insulating protective layer 4-7 and the second iron core 4-2 and yoke 4-6；Described second iron core 4-2 is provided with installing hole and equipped with driving handle 9, is provided with sealing ring between periphery and the installing hole of the shank of described driving handle 9.
In order to improve the fastness after left hand thread is connected between push rod of the present invention and armature further, between armature linkage section and the armature of described push rod, also inject glue.
Being provided with U-shaped oil return runner 1-9 in valve body 1 of the present invention, described oil return opening 1-6 is connected with the stage casing of oil return runner 1-9, and the two ends of oil return runner 1-9 lay respectively at the first oil duct 1-1 and the outside of the second oil duct 1-2；U-shaped oil pressure balance runner 1-10 it is additionally provided with in described valve body 1.Oil return runner 1-9 and oil pressure balance runner 1-10 may not be U-shaped casting mold runner, but the method using fabrication hole to add plug makes other mach pass runner.
As it is shown in figure 1, the work process of the present invention: during use, being connected with the oil-out of oil pump by oil-in 1-7, the first hydraulic fluid port 1-4 and the second hydraulic fluid port 1-5 corresponding actuator port of oil cylinder respectively are connected, and described oil return opening 1-6 is connected with the oil-in of fuel tank；
When two groups of coil 4-4 all must not electricity time, described spool 2 is under the effect of back-moving spring 4-5, it is in the middle position of valve body 1, now, pressure oil can not enter the first hydraulic fluid port 1-4, the second hydraulic fluid port 1-5 and oil return opening 1-6 by oil-in 1-7, and now the first hydraulic fluid port 1-4, the second hydraulic fluid port 1-5 and oil return opening 1-6 are all connected to lead to；
When one group of coil 4-4 near the first iron core 4-1 obtains electric, another group coil must not be electric, the annular protrusion 4-3-1 of described armature 4-3 promotes pad 5 to move forward, making back-moving spring 4-5 is compressive state, and make push-pull bar 4-3-2 promote spool 2 to move forward, pressure oil from oil-in 1-7, the first hydraulic fluid port 1-4, a hydraulic fluid port of oil cylinder, another hydraulic fluid port of oil cylinder, the second hydraulic fluid port 1-5, backs in fuel tank finally by oil return opening 1-6 successively；
When one group of coil 4-4 near the second iron core 4-2 obtains electric, another group coil must not be electric, the push-pull bar 4-3-2 of described armature 4-3 pulls spool 2 to be moved rearwards by, making back-moving spring 4-5 is extended state, pressure oil from oil-in 1-7, the second hydraulic fluid port 1-5, a hydraulic fluid port of oil cylinder, another hydraulic fluid port of oil cylinder, the first hydraulic fluid port 1-4, backs in fuel tank finally by oil return opening 1-6 successively.
It is that left hand thread is connected due to the armature linkage section of described push rod with armature again, so, not only overcome the situation causing both to separate because push rod occurs to rotate counterclockwise between push rod with armature in prior art for a long time, and also overcome for a long time in prior art push rod and armature be welded as a whole the cracking situation caused, substantially increase the reliability of work.
Claims (10)
1. the push rod armature structure of a solenoid directional control valve, including push rod (4-3-2) and armature (4-3), one end of described push rod (4-3-2) has spool linkage section (4-3-21), the other end of push rod (4-3-2) has armature linkage section (4-3-22), the spool linkage section (4-3-21) of described push rod (4-3-2) is provided with push rod radially pin-and-hole (4-3-23), it is characterized in that: the armature linkage section (4-3-22) of described push rod (4-3-2) has left hand thread, one end of described armature (4-3) has left-handed spiral shell mosquito hole, the left hand thread of the armature linkage section (4-3-22) of described push rod (4-3-2) is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature (4-3) one end.
The push rod armature structure of solenoid directional control valve the most according to claim 1, it is characterized in that: there is on described push rod (4-3-2) banking stop (5) being integrated mutually with it, and banking stop (5) offsets with armature (4-3), described banking stop (5) is along the circumferential direction provided with two or more uniform gap (5-1).
The push rod armature structure of solenoid directional control valve the most according to claim 2, it is characterized in that: the spool linkage section (4-3-21) of described push rod (4-3-2) is upper has spacing preiection (4-3-1) near banking stop (5) place, described spacing preiection (4-3-1) is that annular stop is protruding.
4. a solenoid directional control valve, including valve component and electromagnet assembly；
Described valve component includes valve body (1), spool (2) and valve body end cap (3)；
Described valve body (1) includes the first hydraulic fluid port (1-4), second hydraulic fluid port (1-5), oil return opening (1-6), oil-in (1-7) and the valve body main aperture (1-8) being axially arranged with along it, and along valve body main aperture (1-8) inwall the first oil duct (1-1) the most arranged apart, second oil duct (1-2) and the 3rd oil duct (1-3), described first hydraulic fluid port (1-4) is connected with the first oil duct (1-1), second hydraulic fluid port (1-5) is connected with the 3rd oil duct (1-3), oil-in (1-7) is connected with the second oil duct (1-2), described first oil duct (1-1), second oil duct (1-2) is all connected with valve body main aperture (1-8) with the 3rd oil duct (1-3)；
Oil return runner (1-9) it is provided with in described valve body (1), described oil return opening (1-6) is connected with oil return runner (1-9), the two ends of oil return runner (1-9) lay respectively at the first oil duct (1-1) and the outside of the 3rd oil duct (1-3), and the two ends of oil return runner (1-9) are connected with valve body main aperture (1-8)；
One end of described valve body (1) is fixing with electromagnet assembly (4) to be connected, and described valve body end cap (3) is tightly connected with the other end of valve body (1)；
It is positioned in described valve body main aperture (1-8) between the two ends of oil return runner (1-9), the valve body first step (1-11) of the most axially spaced layout, valve body second step (1-12), valve body the 3rd step (1-13) and valve body the 4th step (1-14)；
Described spool (2) is located in the valve body main aperture (1-8) of valve body (1), the middle part of spool (2) has spool the first boss (2-1) and a spool the second boss (2-2) of axially spaced layout, and is equipped with logical pasta (2-6) on spool the first boss (2-1) and spool the second boss (2-2)；
Described electromagnet assembly (4) includes the first iron core (4-1), the second iron core (4-2), coil (4-4), back-moving spring (4-5), yoke (4-6), magnetic shield (7), magnetic guiding loop (8) and push rod armature structure；
Described push rod armature structure includes push rod (4-3-2) and armature (4-3), one end of described push rod (4-3-2) has spool linkage section (4-3-21), the other end of push rod (4-3-2) has armature linkage section (4-3-22), the spool linkage section (4-3-21) of described push rod (4-3-2) is provided with push rod radially pin-and-hole (4-3-23)
The two ends load respectively of described magnetic shield (7) or be welded on the first iron core (4-1) and the second iron core (4-2), and magnetic shield (7) is positioned at the periphery of armature (4-3), described coil (4-4) is located at the periphery of magnetic shield (7), and equipped with magnetic guiding loop (8) between two coils (4-4), described yoke (4-6) is located at the periphery of two coils (4-4)；
One end of described push rod (4-3-2) passes the first iron core (4-1), and one end of the spool linkage section (4-3-21) of push rod (4-3-2) and spool (2) is fixing is connected, one end of described spool (2) is set with spring base (6), back-moving spring (4-5) it is set with on described spring base (6), and the side of one end of back-moving spring (4-5) and spring base (6) offsets, the pad (11) that the other end of described back-moving spring (4-5) and push rod (4-3-2) are provided with offsets；It is characterized in that:
The armature linkage section (4-3-22) of described push rod (4-3-2) has left hand thread, one end of described armature (4-3) has left-handed spiral shell mosquito hole, and the left hand thread of the armature linkage section (4-3-22) of described push rod (4-3-2) is that left hand thread is connected with the left-handed spiral shell mosquito hole of described armature (4-3) one end.
Solenoid directional control valve the most according to claim 4, it is characterized in that: there is on described push rod (4-3-2) banking stop (5) being integrated mutually with it, and banking stop (5) offsets with armature (4-3), described banking stop (5) is along the circumferential direction provided with two or more uniform gap (5-1)；Described first iron core (4-1) is provided with axial stepped hole (4-1-1), and pad (11) is located in stepped hole (4-1-1), the spool linkage section (4-3-21) of described push rod (4-3-2) is upper has spacing preiection (4-3-1) near banking stop (5) place, described spacing preiection (4-3-1) is against the side of pad (11), and described spacing preiection (4-3-1) is that annular stop is protruding.
Solenoid directional control valve the most according to claim 4, it is characterized in that: one end of described spool (2) has connection sleeve pipe (2-8), and connection sleeve pipe (2-8) is provided with sleeve pipe radially pin-and-hole (2-9), the spool linkage section (4-3-21) of described push rod (4-3-2) inserts in the connection sleeve pipe (2-8) of spool (1), and is passed sleeve pipe radially pin-and-hole (2-9) and push rod radially pin-and-hole (4-3-23) by elastic cylindrical pin (12) and connect fixing to spool (2) and push rod (4-3-2)；Described elastic cylindrical pin (12) is straight trough elastic cylindrical pin, or rolls elastic cylindrical pin, or profile of tooth elastic cylindrical pin.
Solenoid directional control valve the most according to claim 4, it is characterized in that: described valve body end cap (3) has end segments (3-1) and thread segment (3-2), the diameter of described end segments (3-1) is more than the diameter of thread segment (3-2), and thread segment (3-2) is connected with the threaded one end of the valve body main aperture (1-8) of valve body (1), the outer face (3-1-2) of described end segments (3-1) has axial inner hexagonal hole (3-1-1);Having annular groove (3-3) between described end segments (3-1) and thread segment (3-2), annular groove (3-3) place between described end segments (3-1) and thread segment (3-2) is equipped with sealing ring.
Solenoid directional control valve the most according to claim 4, it is characterised in that: the two ends of described spool (2) are also respectively provided with the spool mat woven of fine bamboo strips three boss (2-3) and spool the 4th boss (2-4)；
Oil pressure balance runner (1-10) it is additionally provided with in described valve body (1), the two ends of described oil pressure balance runner (1-10) lay respectively at the outside at oil return runner (1-9) two ends, and the two ends of oil pressure balance runner (1-10) are connected with valve body main aperture (1-8), the two ends of valve body (1) inner valve body main aperture (1-8) are respectively equipped with valve body the 5th step (1-15) and valve body the 6th step (1-16) the most vertically, valve body the 5th step (1-15) and valve body the 6th step (1-16) lay respectively at outside and the inner side at oil pressure balance runner (1-10) two ends at oil return runner (1-9) two ends；
The spool mat woven of fine bamboo strips three boss (2-3) at described spool (2) two ends and spool the 4th boss (2-4) are slidably matched with corresponding valve body the 5th step (1-15) and valve body the 6th step (1-16) respectively；
The opposite side of described spring base (6) can offset with valve body the 6th step (1-16) and/or spool the 4th boss (2-4).
Solenoid directional control valve the most according to claim 4, it is characterized in that: on the outer wall of described spool the first boss (2-1), spool the second boss (2-2), the spool mat woven of fine bamboo strips three boss (2-3) and spool the 4th boss (2-4), be equipped with balancing slit (2-7), wherein it is equipped with two or more logical pasta (2-6) on spool the first boss (2-1) and spool the second boss (2-2), logical pasta (2-6) is plane or cancave cambered surface, and forms logical hydraulic fluid port (1-8-1) between the inwall of logical pasta (2-6) and valve body main aperture (1-8).
Solenoid directional control valve the most according to claim 4; it is characterized in that: described electromagnet assembly (4) also includes insulating protective layer (4-7); insulating protective layer (4-7) is coated on the first iron core (4-1) and the periphery of yoke (4-6), is equipped with dust ring (10) between one end of insulating protective layer (4-7) and the first iron core (4-1) and valve body (1) and between the other end of insulating protective layer (4-7) and the second iron core (4-2) and yoke (4-6)；Described second iron core (4-2) is provided with installing hole and equipped with driving handle (9), is provided with sealing ring between periphery and the installing hole of the shank of described driving handle (9).
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| CN201610500750.4A CN105952951B (en) | 2016-06-30 | 2016-06-30 | Solenoid directional control valve and its push rod armature structure |
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| CN106286455A (en) * | 2016-10-31 | 2017-01-04 | 常州市康士达机电有限公司 | Heat dissipation type solenoid directional control valve |
| CN107035889A (en) * | 2017-05-10 | 2017-08-11 | 常州市康士达机电有限公司 | The solenoid directional control valve of engineering truck |
| CN107180694A (en) * | 2017-04-19 | 2017-09-19 | 常州市康士达机电有限公司 | The electromagnet assembly of solenoid directional control valve |
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| CN108443561B (en) * | 2018-05-18 | 2024-03-08 | 常州市康士达机电有限公司 | Electromagnetic reversing valve and valve body thereof |
| CN109296575A (en) * | 2018-11-12 | 2019-02-01 | 温州大学 | A kind of pilot control formula switch valve |
| CN109538561B (en) * | 2018-11-12 | 2020-09-22 | 温州大学激光与光电智能制造研究院 | Pilot proportional control type switch valve |
| CN109538561A (en) * | 2018-11-12 | 2019-03-29 | 温州大学激光与光电智能制造研究院 | A kind of guide proportion control formula switch valve |
| CN113107919A (en) * | 2021-04-23 | 2021-07-13 | 温州大学 | Embedded half-bridge guide control mechanism of rotary valve and fluid control valve |
| WO2023193594A1 (en) * | 2022-04-07 | 2023-10-12 | 丹佛斯动力系统（上海）有限公司 | Proportional valve |
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