CN110439872A - A kind of tubular type hydraulic lock - Google Patents
A kind of tubular type hydraulic lock Download PDFInfo
- Publication number
- CN110439872A CN110439872A CN201910765799.6A CN201910765799A CN110439872A CN 110439872 A CN110439872 A CN 110439872A CN 201910765799 A CN201910765799 A CN 201910765799A CN 110439872 A CN110439872 A CN 110439872A
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- plunger
- valve body
- valve
- port
- runner
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- 239000003921 oil Substances 0.000 claims abstract description 60
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The present invention relates to a kind of tubular type hydraulic locks, including the first valve body, second valve body, second spring, set on the intracorporal check valve assembly of the second valve and it is set to the intracorporal plunger of the first valve, on first valve body, or the plunger body outside wall surface and the first runner inner wall between be also formed with the side wall surface for the annular protrusion that the hydraulic oil in it can be made to act on the plunger body to drive the plunger to move backward control oil circuit, the control oil circuit is communicated with the control port, when the plunger moves backward, plunger rod can drive spool to move backward and open the valve port；The first hollow duct penetrated through axially back and forth is also provided on the plunger, the connection corresponding with the oil inlet of first valve body of the front port of first hollow duct, the rear port of first hollow duct is corresponding with the valve port of the second valve body to be communicated.The hydraulic lock body product of the tubular type of this structure setting is small and exquisite, compact-sized, more meets actual installation requirements.
Description
Technical field
The present invention relates to hydraulic control device technical field more particularly to a kind of tubular type hydraulic locks.
Background technique
Hydraulic lock, a kind of device playing the role of locking in hydraulic cylinder oil circuit, it can make weight reliable with executing agency
Ground is parked on any position of need of work, plays locking pressure maintaining effect, guarantees that host work is safe and reliable.Existing hydraulic lock
It is divided into one-way hydraulic lock (hydraulic control one-way valve) and bidirectional hydraulic lock, such as application No. is CN201420415539.9 (Authorization Notice No.
Are as follows: CN204003701U) " a kind of novel bidirectional hydraulic lock valve group ", and application No. is CN201520244513.7 (authorization
Notification number are as follows: CN204729374U) the patent documents such as " bidirectional hydraulic lock " disclose this hydraulic lock structure.But no
Pipe is one-way hydraulic lock or bidirectional hydraulic lock, and the volume of valve body is larger, during installation, needs the space occupied larger, such as
What provides a kind of compact, the compact-sized hydraulic lock that can effectively save installation space becomes those skilled in the art and urgently solves
Certainly the technical issues of.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of compact, structure are tight
That gathers can effectively save the hydraulic lock of installation space.
The technical scheme of the invention to solve the technical problem is: a kind of tubular type hydraulic lock, comprising:
First valve body is designed to that the tubular body with the first runner penetrated through axially back and forth, first valve body have control
Hydraulic fluid port, the front port of the first runner form the oil inlet entered for medium, and the rear port of first runner forms connector；
Second valve body is designed to that the front end of second valve body is assemblied in the tubular body of the valve chamber penetrated through axially back and forth
On the connector of first valve body, the rear port of the valve chamber forms the oil outlet flowed out for medium, the front port of the valve chamber
Form the valve port communicated corresponding with the first runner；
Check valve assembly, in the valve chamber of second valve body, including that can be set in the valve chamber to fore-aft travel
Spool, the first spring positioned at the spring base at the rear of spool and between spool and spring base, in the work of the first spring
Under, the spool has always to be moved forward to close the trend of the valve port of second valve body；
Plunger is actively set in the first runner axially back and forth, is formed with annular on the periphery wall including its rear end
The plunger body of protrusion and the plunger rod to extend back from the rear end of plunger body, the front and rear ends of the plunger body are equal
It seals and cooperates with the inner wall of the first runner；
Second spring is connected between the rear end of the plunger and the front end of second valve body, makes the plunger always
Plunger rod is detached to the trend of the spool with moving forward；
Shape is gone back on first valve body or between the outside wall surface of the plunger body and the inner wall of the first runner
The control oil circuit that Cheng Youneng acts on the end face of the annular protrusion of the plunger body to drive the plunger to move backward, the control
Oil circuit is communicated with the control port, and when the plunger moves backward, plunger rod can drive spool to move backward described in opening
Valve port；
Be also provided with the first hollow duct penetrated through axially back and forth on the plunger, the front port of first hollow duct with
The corresponding connection of the oil inlet of first valve body, the rear port of first hollow duct is corresponding with the valve port of the second valve body to be communicated.
It is concentrated to reduce stress, increases the intensity of plunger body and plunger rod junction, the rear end of the plunger body
Spherical crown surface with projection backward offers multiple plunger holes communicated with first hollow duct on the spherical crown surface；It is described
Plunger rod is located at the medium position of the spherical crown surface, and each plunger hole is evenly arranged in the outside of the root of the plunger rod.
Be successively arranged from front to back in order to effectively plunger be driven to move backward, on the inner wall of first runner the first stepped hole and
Second stepped hole, so that small flow channels, the middle runner positioned at middle part and the big runner positioned at rear portion for being located at front are formed,
In, the inner wall of the periphery wall of the front end of the plunger and small flow channels, which seals, to be cooperated, the periphery wall of the annular protrusion of the plunger with
The inner wall of big runner seals cooperation, there are annular gap between the plunger and the inner wall of the middle runner, the annular gap with
The corresponding connection of the control port is to constitute the control oil circuit；The front end face of the annular protrusion of the plunger is connected to
In the first step portion formed between the big runner and middle runner.
Oil circuit will be controlled set on the side of plunger, can be made to open up the first hollow duct vacating space in plunger body
The structure for obtaining hydraulic lock is more compact.The first stepped hole and the second stepped hole are successively arranged on the inner wall of first runner from front to back
It enables to plunger to form different hydraulic stress surfaces in rear and front end, when being passed through control oil in control oil circuit, can drive
Plunger moves backward.It is envisioned that control oil circuit can also be that its fuel-displaced port is located in first step portion and energy is direct
Act on the flow passage structure of the front end face of annular protrusion.
In order to which the rear and front end in plunger is effectively sealed, avoid controlling oily leakage, the periphery of the front end of the plunger
Between the inner wall of the small flow channels of wall and first valve body be equipped with the first sealing ring, the periphery wall of the annular protrusion of the plunger with
The second sealing ring is equipped between the inner wall of the big runner of first valve body.
It is effectively fixed in order to be carried out to second spring, so that plunger is steadily moved forward and backward, the rear end of the plunger is set
There is the first locating slot positioned for the first end to second spring, the front end of second valve body, which is equipped with, is used for the second bullet
The second locating slot that the second end of spring is positioned, the plunger rod can pass through the second spring and offset with the spool.
As an improvement, the spring base is threaded at the rear port of the valve chamber.When spring base be displaced to it is different
When position, spool can be at different opening pressure, be suitable for different working conditions.
In order to which hydraulic oil to be delivered to the oil outlet position on the second valve body, the valve port on second valve body is shrinkage cavity knot
Structure, the front end of the spool are cone structure of the sealing cooperation in the shrinkage cavity structure；The spool has to be penetrated through axially back and forth
The second hollow duct, the stepped part of undergauge, the stepped part and the valve chamber are also formed on the periphery wall of the leading portion of the spool
Inner wall between formed ebb interval, be additionally provided on the stepped part and be connected to the mistake for crossing ebb interval and second hollow duct
Discharge orifice；The fluid hole road for being connected to second hollow duct and the oil outlet is additionally provided on the spring base.In spool
Inside open up the second hollow duct, the space structure of spool itself is rationally utilized, the volume of hydraulic lock can be made smaller
Ingeniously, compact.
In order to which the rear and front end to the first spring positions, second hollow duct is pre-small post-large third ladder
Hole, the front end of first spring are connected in the third stage portion formed in the third stepped hole, first spring
Rear end is connected in the third locating slot being correspondingly arranged in the front end side wall of the spring base.The front end of first spring is contained in
Structure setting in third stepped hole can further decrease the volume of hydraulic lock.
The first valve body and the second valve body are attached and guarantee leakproofness between the two, second valve body for convenience
Front end protrude into the connector of first valve body and be connected through a screw thread, the front end of second valve body and first valve
Third sealing ring is additionally provided between the connector of body.Plunger and second spring can be assembled to by the connector of the first valve body
Between one valve body and the second valve body.
It is connect to easily control oily oil pipe with outside, the control port is set on the side wall of first valve body.
Compared with prior art, advantages of the present invention: hydraulic lock of the invention is whole in a tubular form, unlike the prior art
It is that the front end of this tubular type hydraulic lock is oil inlet, and rear end is oil outlet, and offers the penetrated through axially back and forth in plunger
One hollow duct, in fuel feeding, hydraulic oil can enter from the oil inlet of front end, then by the first hollow duct of plunger and
Check valve assembly is flowed out from the oil outlet for being located at rear end, and when needing oil return, under control oil circuit effect, plunger can be moved backward
Open check valve makes hydraulic oil along backtracking.The hydraulic lock body product of the tubular type of this structure setting is small and exquisite, compact-sized, more accords with
Close actual installation requirements.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the tubular type hydraulic lock of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the first valve body of the tubular type hydraulic lock of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the second valve body of the tubular type hydraulic lock of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the plunger of the tubular type hydraulic lock of the embodiment of the present invention；
Fig. 5 is the second valve body of tubular type hydraulic lock of the embodiment of the present invention and the structural schematic diagram of check valve assembly cooperation；
Fig. 6 is the structural schematic diagram of the spool of the tubular type hydraulic lock of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Referring to Fig. 1-Fig. 6, a kind of tubular type hydraulic lock includes the first valve body 10, the second valve body 20, second spring 43, check valve
Component and plunger 40, wherein the first valve body 10 and the second valve body 20 are designed to tubular body, the front end connection of the second valve body 20
In the rear end of the first valve body 10 to make entirety of hydraulic lock in a tubular form, specifically, the first valve body 10 with penetrating through axially back and forth
First runner 100, the second valve body 20 has the valve chamber 200 that penetrates through axially back and forth, when the second valve body 20 is assemblied in the first valve body
When on 10, first runner 100 and valve chamber 200 are generally on same straight line.
Referring to Fig. 1 and Fig. 2, there is control port P, oil inlet V and for assembling the second valve body 20 on the first valve body 10
Connector 101, wherein the front end of the second valve body 20 is protruded into the connector 101 of the first valve body 10 and is connected through a screw thread, the
Third sealing ring 11 is additionally provided between the front end of two valve bodies 20 and the connector 101 of the first valve body 10.Control port P is located at first
On the side wall of valve body 10, it is connect with facilitating with the external oil pipe (not shown) for controlling oily power source, oil inlet V is located at the first valve body
10 front end is specifically made of the front port of first runner 100, and connector 101 is located at the rear end of the first valve body 10, specifically by
The rear port of one runner 100 is constituted, and is detailed in Fig. 2.
There is valve port 201 and oil outlet C on second valve body 20, wherein valve port 201 is located at the front end of the second valve body 20,
It is specifically made of the front port of valve chamber 200, oil outlet C is located at the rear end of the second valve body 20, specifically by the rear port structure of valve chamber 200
At being detailed in Fig. 3.
Referring to Fig. 5, check valve assembly is set in the valve chamber 200 of the second valve body 20, specifically include spool 31, spring base 32 with
And the first spring 33 among the two, spool 31 are located at the front of valve chamber 200, head is cone structure 311, accordingly
Ground, the valve port 201 of the second valve body 20 are shrinkage cavity structure, which can seal cooperation in the shrinkage cavity of above-mentioned valve port 201
In structure, to form the control mouth structure that can open or close above-mentioned valve port 201.
Referring to Fig. 5 and Fig. 6, spool 31 has the second hollow duct 34 for penetrating through axially back and forth, the leading portion of spool 31 it is outer
The stepped part 35 of undergauge is also formed on peripheral wall, was formed ebb interval 350 between the stepped part 35 and the inner wall of valve chamber 200 and (is detailed in
Fig. 5), it is additionally provided with the flowing hole 36 for being connected to ebb interval 350 and the second hollow duct 34 on the stepped part 35, is gone back on spring base 32
Equipped with the fluid hole road 320 (being detailed in Fig. 5) for being connected to the second hollow duct 34 and oil outlet C.When spool 31 moves backward out
When opening valve port 201, hydraulic oil was able to enter in ebb interval 350, was then entered in second by the flowing hole 36 on spool 31
In empty runner 34, the fluid hole road 320 for eventually passing through spring base 32 is flowed out through the oil outlet C of the second valve body 20.In spool 31
Inside opens up the second hollow duct 34, and the space structure of spool 31 itself is rationally utilized, can make the volume of hydraulic lock more
It is small and exquisite, compact.
Referring to Fig. 5, in order to which the rear and front end to the first spring 33 positions, the second hollow duct 34 is pre-small post-large
Third stepped hole, the front end of the first spring 33 are connected in the third stage portion 340 formed in third stepped hole, the first spring 33
Rear end be connected in the third locating slot 321 being correspondingly arranged in the front end side wall of spring base 32.By the front and back of the first spring 33
Both ends are respectively positioned in third stepped hole and in third locating slot 321, can not only guarantee the secured fixed of the first spring 33
Position, moreover it is possible to further decrease the volume of hydraulic lock.
With continued reference to Fig. 5, the rear port position of the valve chamber 200 of the second valve body 20 is equipped with internal screw thread, the periphery of spring base 32
External screw thread is correspondingly provided on wall, the fit structure of this threaded connection enables to opposite second valve in assembly of spring base 32
Body 20 carries out moving forward and backward adjusting, and when spring base 32 is displaced to different positions, spool 31 can be at different opening pressure,
Suitable for different working conditions.
Referring to Fig. 1 and Fig. 4, plunger 40 can be set in the first runner 100 of the first valve body 10 to fore-aft travel, be specifically included
Plunger body 41 with annular protrusion 411 and the plunger rod 42 set on 41 rear end of plunger body, wherein plunger rod 42 is located at column
It the back-end location of plug body 41 and extends back, when being moved backward under driving of the plunger 40 in control oil, the top of plunger rod 42
End can act on the spool 31 in the second valve body 20, and driving 31 rearward displacement of spool in turn opens valve port 201, correspondingly,
It is additionally provided with second spring 43 between the rear end of plunger 40 and the front end of the second valve body 20, after control oil is cancelled, above-mentioned second
Under the action of spring 43, plunger 40 can move forward reset, and plunger rod 42 can be detached from spool 31, and spool 31 moves forward again by valve port
201 close.In order to effectively be fixed to second spring 43, plunger 40 is set steadily to be moved forward and backward, the rear end of plunger 40
Equipped with the first locating slot 48 positioned for the first end to second spring 43, the front end of the second valve body 20 is equipped with for the
The second locating slot 21 that the second end of two springs 43 is positioned, plunger rod 42 can pass through second spring 43 and offset with spool 31.
With continued reference to Fig. 1 and Fig. 4, the first hollow duct 50 penetrated through axially back and forth is also provided on plunger 40, this first
The connection corresponding with the oil inlet V of the first valve body 10 of the front port of hollow duct 50, the rear port of first hollow duct 50 and the
The correspondence of valve port 201 of two valve bodies 20 communicates, can be direct after hydraulic oil enters from the oil inlet V of the front end of the first valve body 10
Entered in the valve chamber 200 of the second valve body 20 by the first hollow duct 50 of plunger 40, column is rationally utilized in this structure setting
The inner space of plug 40 facilitates so that the volume of hydraulic lock greatly reduces and connects arrangement in fluid pressure line, be more in line with reality
The installation requirements on border.Specifically, the rear end of plunger body 41 has the spherical crown surface 412 (being detailed in Fig. 4) of projection backward, in this implementation
Example, spherical crown surface 412 are preferably hemisphere face, are radially offered on the spherical crown surface 412 multiple with 50 phase of the first hollow duct
Logical plunger hole 44.Wherein, plunger rod 42 is located at the medium position of the spherical crown surface 412, and each plunger hole 44 is evenly arranged in plunger
The outside of the root of bar 42, such structure setting can be concentrated to reduce stress, increase plunger body 41 and plunger rod 42
The intensity of junction.
Referring to Fig. 1 and Fig. 2, oil return is carried out in order to facilitate hydraulic oil, hydraulic lock needs are passed through control oil driving plunger
40 move backward and then push the valve ports 201 of the second valve body 20 of unlatching of spool 31, and control oil circuit is set to plunger 40 in the present embodiment
Side the first stepped hole and the second stepped hole are specifically successively arranged on the inner wall of first runner 100 from front to back, this two
Stepped hole makes first runner 100 form small flow channels 100a, the middle runner 100b positioned at middle part positioned at front in the longitudinal direction
And the big runner 100c positioned at rear portion, wherein the periphery wall of the front end of plunger 40 and the inner wall of small flow channels 100a pass through first
Sealing ring 46 is sealed cooperation, and the first sealing ring 46 is set to the first annular groove opened up on the periphery wall of the front end of plunger 40
In 460, the inner wall of the periphery wall of the annular protrusion 411 of plunger 40 and big runner 100c are sealed by the second sealing ring 47 matches
It closes, the second sealing ring 47 is set in the second annular groove 470 opened up on the periphery wall of annular protrusion 411, plunger 40 and middle stream
There are annular gap 45 between the inner wall of road 100b, the annular gap 45 connection corresponding with control port P is above-mentioned to constitute
Control oil circuit.
Referring to fig. 4, annular protrusion 411 is set on the periphery wall of the rear end of plunger body 41, on the one hand, can make control oil
Control oil in road acts on the front end face of annular protrusion 411, and driving plunger 40 moves backward, on the other hand, in the second bullet
Under the action of spring 43, the front end face of the annular protrusion 411 of plunger 40 can be connected to shape between big runner 100c and middle runner 100b
At first step portion 102 on, to be limited in the axial direction to plunger 40.
Referring to Fig. 1, oil circuit will be controlled set on the side of plunger 40, can be to open up the first hollow duct inside plunger 40
50 vacating spaces, so that the structure of hydraulic lock is more compact.The first rank is successively arranged on the inner wall of first runner 100 from front to back
Terraced hole and the second stepped hole enable to plunger 40 to form different hydraulic stress surfaces in rear and front end, are passed through when in control oil circuit
When control oil, plunger 40 can be driven to move backward.It is envisioned that control oil circuit can also be that its fuel-displaced port is located at the
In one stage portion 102 and the flow passage structure on the front end face of annular protrusion 411 can be directly acted on.
The operation principle and process of tubular type hydraulic lock in the present embodiment:
Hydraulic oil enters from the oil inlet V of the first valve body 10, then by the first hollow duct 50 in plunger 40 through column
Consent 44 flows out, and under the pressure effect of hydraulic oil, the spool 31 of check valve assembly moves backward the valve for opening the second valve body 20
Mouth 201, hydraulic oil is entered in valve chamber 200 by valve port 201, and passes through the fluid hole road 320 of spring base 32, by the second valve body 20
Oil outlet C outflow, reach executing agency；After the completion of oil inlet, since control port P is not passed through control oil, check valve assembly
Spool 31 moved forward under the action of the first spring 33, be in sealing state with valve port 201, be able to maintain executing agency
Lock state.When needing oil return, control oil enters in control oil circuit from control port P, under the pressure of control oil, plunger
40 move backward, and plunger rod 42 opens the spool 31 of check valve assembly, open valve port 201, at this point, hydraulic oil can successively lead to
Cross the valve port 201 in the fluid hole road 320 of spring base 32, the second hollow duct 34 of spool 31 and flowing hole 36, the second valve body 20
And the plunger hole 44 and the first hollow duct 50 of plunger 40, it is finally flowed out by the oil inlet V of the first valve body 10, completes oil return
Journey.
Claims (10)
1. a kind of tubular type hydraulic lock, characterized by comprising:
First valve body (10) is designed to the tubular body with the first runner (100) penetrated through axially back and forth, first valve body (10)
With control port (P), the front port of the first runner (100) forms the oil inlet (V) entered for medium, first runner
(100) rear port forms connector (101)；
Second valve body (20) is designed to the tubular body of valve chamber (200) penetrated through axially back and forth, before second valve body (20)
End is assemblied on the connector (101) of first valve body (10), what the rear port formation of the valve chamber (200) was flowed out for medium
The front port of oil outlet (C), the valve chamber (200) forms the valve port (201) communicated corresponding with the first runner (100)；
Check valve assembly is set in the valve chamber (200) of second valve body (20), including can be set to the valve chamber to fore-aft travel
(200) spool (31) in, be located at spool (31) rear spring base (32) and be set to spool (31) and spring base (32)
Between the first spring (33), under the action of the first spring (33), the spool (31) always have move forward to close
The trend of the valve port (201) of second valve body (20)；
Plunger (40) is actively set in the first runner (100) axially back and forth, is formed on the periphery wall including its rear end
The plunger body (41) of annular protrusion (411) and the plunger rod (42) to extend back from the rear end of plunger body (41), it is described
The front and rear ends of plunger body (41), which are sealed with the inner wall of the first runner (100), to be cooperated；
Second spring (43) is connected between the rear end of the plunger (40) and the front end of second valve body (20), is made described
Plunger (40) has always to be moved forward so that plunger rod (42) to be detached to the trend of the spool (31)；
On first valve body (10) or the inner wall of the outside wall surface of the plunger body (41) and the first runner (100)
The end face for the annular protrusion (411) that the hydraulic oil in it can be made to act on the plunger body (41) is also formed between face to drive
The control oil circuit for moving backward the plunger (40), the control oil circuit are communicated with the control port (P), when the plunger (40)
When moving backward, plunger rod (42) can drive spool (31) to move backward and open the valve port (201)；
The first hollow duct (50) penetrated through axially back and forth is also provided on the plunger (40), first hollow duct (50)
Front port connection corresponding with oil inlet (V) of first valve body (10), the rear port and second of first hollow duct (50)
Valve port (201) correspondence of valve body (20) communicates.
2. tubular type hydraulic lock according to claim 1, it is characterised in that: the rear end of the plunger body (41) has backward
The spherical crown surface (412) of projection offers multiple plunger holes communicated with first hollow duct (50) on the spherical crown surface (412)
(44)；
The plunger rod (42) is located at the medium position of the spherical crown surface (412), and each plunger hole (44) is evenly arranged in the plunger
The outside of the root of bar (42).
3. tubular type hydraulic lock according to claim 1, it is characterised in that: on the inner wall of first runner (100) from front to back
It is successively arranged the first stepped hole and the second stepped hole, to form the small flow channels (100a) for being located at front, the middle stream positioned at middle part
Road (100b) and big runner (100c) positioned at rear portion, wherein the periphery wall and small flow channels of the front end of the plunger (40)
The inner wall of (100a) seals cooperation, the periphery wall of the annular protrusion (411) of the plunger (40) and the inner wall of big runner (100c)
Sealing cooperation, there are annular gap (45), the annular gaps between the plunger (40) and the inner wall of the middle runner (100b)
(45) connection corresponding with the control port (P) is to constitute the control oil circuit；
The front end face of the annular protrusion (411) of the plunger (40) be connected to the big runner (100c) and middle runner (100b) it
Between in the first step portion (102) that is formed.
4. tubular type hydraulic lock according to claim 3, it is characterised in that: the periphery wall of the front end of the plunger (40) and institute
It states and is equipped with the first sealing ring (46) between the inner wall of the small flow channels (100a) of the first valve body (10), the convex annular of the plunger (40)
The second sealing ring (47) are equipped between the inner wall of the big runner (100c) of the periphery wall in portion (411) and first valve body (10).
5. tubular type hydraulic lock according to claim 1, it is characterised in that: the rear end of the plunger (40) is equipped with for the
The first locating slot (48) that the first end of two springs (43) is positioned, the front end of second valve body (20), which is equipped with, is used for second
The second locating slot (21) that the second end of spring (43) is positioned, the plunger rod (42) can pass through the second spring (43)
It offsets with the spool (31).
6. tubular type hydraulic lock according to claim 1, it is characterised in that: the spring base (32) is threaded in the valve
At the rear port of chamber (200).
7. tubular type hydraulic lock according to claim 1 to 6, it is characterised in that: on second valve body (20)
Valve port (201) is shrinkage cavity structure, and the front end of the spool (31) is cone structure of the sealing cooperation in the shrinkage cavity structure
(311)；
The spool (31) has the second hollow duct (34) penetrated through axially back and forth, the periphery wall of the leading portion of the spool (31)
On also form the stepped part (35) of undergauge, formed ebb interval between the stepped part (35) and the inner wall of the valve chamber (200)
(350), it is additionally provided on the stepped part (35) and is connected to the flowing hole for crossing ebb interval (350) and second hollow duct (34)
(36)；
The fluid hole for being connected to second hollow duct (34) and the oil outlet (C) is additionally provided on the spring base (32)
Road (320).
8. tubular type hydraulic lock according to claim 7, it is characterised in that: second hollow duct (34) is pre-small post-large
Third stepped hole, the front end of first spring (33) is connected to the third stage portion formed in the third stepped hole
(340) on, the rear end of first spring (33) is connected to the third being correspondingly arranged in the front end side wall of the spring base (32)
In locating slot (321).
9. tubular type hydraulic lock according to claim 7, it is characterised in that: the front end of second valve body (20) is protruded into described
It in the connector (101) of first valve body (10) and is connected through a screw thread, the front end of second valve body (20) and first valve
Third sealing ring (11) are additionally provided between the connector (101) of body (10).
10. tubular type hydraulic lock according to claim 1 to 6, it is characterised in that: the control port (P) is set to
On the side wall of first valve body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765799.6A CN110439872B (en) | 2019-08-19 | 2019-08-19 | Tubular hydraulic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765799.6A CN110439872B (en) | 2019-08-19 | 2019-08-19 | Tubular hydraulic lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| CN110439872B CN110439872B (en) | 2024-04-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213242A (en) * | 2011-07-19 | 2011-10-12 | 宁波克泰液压有限公司 | Thread plug-in type electronic control hydraulic lock |
| CN202132292U (en) * | 2011-07-19 | 2012-02-01 | 宁波克泰液压有限公司 | Threaded cartridge type electric control hydraulic lock |
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| CN106195370A (en) * | 2016-08-13 | 2016-12-07 | 李军 | Cartridge balanced valve |
| CN108561355A (en) * | 2018-07-12 | 2018-09-21 | 宁波善研液压有限公司 | bidirectional hydraulic lock |
| CN210461218U (en) * | 2019-08-19 | 2020-05-05 | 宁波善研液压有限公司 | Tubular hydraulic lock |
-
2019
- 2019-08-19 CN CN201910765799.6A patent/CN110439872B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213242A (en) * | 2011-07-19 | 2011-10-12 | 宁波克泰液压有限公司 | Thread plug-in type electronic control hydraulic lock |
| CN202132292U (en) * | 2011-07-19 | 2012-02-01 | 宁波克泰液压有限公司 | Threaded cartridge type electric control hydraulic lock |
| CN103470572A (en) * | 2013-09-10 | 2013-12-25 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and bidirectional hydraulic lock comprising same |
| CN106195370A (en) * | 2016-08-13 | 2016-12-07 | 李军 | Cartridge balanced valve |
| CN108561355A (en) * | 2018-07-12 | 2018-09-21 | 宁波善研液压有限公司 | bidirectional hydraulic lock |
| CN210461218U (en) * | 2019-08-19 | 2020-05-05 | 宁波善研液压有限公司 | Tubular hydraulic lock |
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| Publication number | Publication date |
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| CN110439872B (en) | 2024-04-05 |
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