CN108223474A - A kind of compact trimmer valve - Google Patents
A kind of compact trimmer valve Download PDFInfo
- Publication number
- CN108223474A CN108223474A CN201810052519.2A CN201810052519A CN108223474A CN 108223474 A CN108223474 A CN 108223474A CN 201810052519 A CN201810052519 A CN 201810052519A CN 108223474 A CN108223474 A CN 108223474A
- Authority
- CN
- China
- Prior art keywords
- hydraulic fluid
- fluid ports
- mounting groove
- spool
- spliced eye
- 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.)
- Withdrawn
Links
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
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Servomotors (AREA)
Abstract
The invention discloses a kind of compact trimmer valves, swivel nut including being equipped with valve seat, the valve seat are equipped with A hydraulic fluid ports and B hydraulic fluid ports, spool are slidably connected in the valve seat, it is equipped in the swivel nut and forces the spring that the spool is moved to the A hydraulic fluid ports, oil back chamber is equipped in the swivel nut；Spliced eye is equipped in the spool, the push rod with its clearance fit is slidably connected in the spliced eye, upper and lower ends in the spool in the spliced eye are respectively equipped with the first mounting groove and the second mounting groove, the first steel ball and the second steel ball are respectively equipped in first mounting groove and second mounting groove, plug is equipped in first mounting groove, screw plug is equipped in second mounting groove；The first through flow hole is equipped in the screw plug, third through flow hole and the second through flow hole for connecting the oil back chamber and the spliced eye are equipped in the spool；The valve arrangement is simple, compact trimmer valve easy to process, can realizing bidirectional buffering.
Description
Technical field
The present invention relates to hydraulic valve technical field, specially a kind of compact trimmer valve.
Background technology
In modern mechanical equipment slewing equipment, pooling feature hydraulic circuit has been widely applied, has been filled as excavator turns round
It puts, crane rotation device, high-altitude operation vehicle slewing equipment, manipulator slewing equipment and agriculture and forestry machinery slewing equipment etc., wherein
Rotary buffering valve is the key that this kind of system Hydraulic Elements, and the quality of rotary buffering valve performance directly affects the performance of host.
Existing rotary buffering valve is divided into two kinds of board-like rotary buffering valve and plug-in rotary buffering valve by connection mode, in systems for
Reduction installation space improves system reliability, generally using plug-in rotary buffering valve.If Authorization Notice No. is " CN
202073860 ", the patent of entitled " threaded plug-in adjustable buffer overflow valve " discloses a kind of rotary buffering valve, including
Valve pocket, valve seat, spool, spring and damper piston, valve pocket have the first hydraulic fluid port, and valve seat is set on the front end of valve pocket and with second
Hydraulic fluid port, spool are set in valve pocket, and pressure regulation swivel nut has front end inner cavity, simultaneously can move axially and then can change set on the rear end of valve pocket
Become the axial elastic force of spring, damper piston includes guide part, the projecting ring section of middle part radial protrusion and the front end axially open of rear end
With the volumetric cylinder portion of spool rear end cooperation, the rear end face of projecting ring section is more than front end face, has among projecting ring section for the calm cylinder of fluid
Portion flows to the interface channel on the outside of rear end, and volumetric cylinder portion laterally has the side flowed to for the calm canister portion inner cavity of fluid to volumetric cylinder portion outer wall
To channel.Although the invention can realize simple buffering relief function, it has the following disadvantages：It can only be realized first
One direction pooling feature, in practical applications hydraulic motor to rotate and reverse, in this way need it is each in two hydraulic fluid ports of hydraulic motor
One trimmer valve is installed, two rotary buffering valves are integrated into inside valve plate and on the one hand increase volume, on the other hand increase into
This；Secondly in the invention, structure is complex, more demanding in processing and assembling, and synthesis is of high cost.
Invention content
(1) technical problems to be solved
The defects of it is an object of the invention to overcome in the prior art, provides one kind simple in structure, easy to process, Ke Yishi
The compact trimmer valve of existing bidirectional buffering.
(2) technical solution
To achieve the above object, the present invention provides a kind of compact trimmer valve, the swivel nut including being equipped with valve seat is described
Valve seat is equipped with A hydraulic fluid ports and B hydraulic fluid ports, is slidably connected in the valve seat and is useful for the spool of control A hydraulic fluid ports and B hydraulic fluid port break-makes, institute
The spring for being equipped in swivel nut and the spool being forced to be moved to the A hydraulic fluid ports is stated, is equipped with and institute at the spring in the swivel nut
State the oil back chamber of spool mutual cooperation；Is axially arranged with spliced eye along it in the spool, slidably connected in the spliced eye with
The push rod of its clearance fit, in the spool the upper and lower ends of the spliced eye be respectively equipped with connected with the spliced eye the
It is respectively equipped with to match with the push rod in one mounting groove and the second mounting groove, first mounting groove and second mounting groove and share
It is detached from being equipped in the first steel ball and the second steel ball of control spliced eye break-make, first mounting groove for limiting the first steel ball
The plug of first mounting groove, second mounting groove is interior to be equipped with to limit the screw plug that the second steel ball is detached from the second mounting groove；Institute
The first through flow hole being equipped in screw plug for connecting the second mounting groove and A hydraulic fluid ports is stated, is equipped with to connect first in the spool
The third through flow hole of mounting groove and B hydraulic fluid ports and the second through flow hole for connecting the oil back chamber and the spliced eye.
Through the above technical solutions, when the compact trimmer valve works, can be selected according to A hydraulic fluid ports and B hydraulic fluid ports pressure size
The low pressure port for selecting both oil back chamber and A hydraulic fluid ports or B hydraulic fluid ports communicates, and then realizes bidirectional buffering；Concrete operating principle is：If A is oily
Mouth is high pressure, and B hydraulic fluid ports are low pressure, then the pressure of A hydraulic fluid ports acts on the lower end that spliced eye is withstood on the second steel ball and leads to
Push rod is crossed by the open-top upper end for being detached from spliced eye of the first steel ball, the fluid of such oil back chamber passes through the second through flow hole, spliced eye, the
One mounting groove, third through flow hole are communicated with B hydraulic fluid ports, while the pressure of A hydraulic fluid ports is applied on spool, push spool compressed spring from
And realize A hydraulic fluid ports to the buffering of B hydraulic fluid ports；If B hydraulic fluid ports are high pressure, A hydraulic fluid ports are low pressure, then the pressure of B hydraulic fluid ports acts on the first steel
Withstood on ball the upper end of spliced eye and by push rod by the second steel ball it is open-top be detached from spliced eye lower end, such oil back chamber
Fluid communicated by the second through flow hole, spliced eye, the first through flow hole with A hydraulic fluid ports, while the pressure of B hydraulic fluid ports is applied to spool
On, spool compressed spring is pushed so as to fulfill B hydraulic fluid ports to the buffering of A hydraulic fluid ports.
In further technical solution, spring base is equipped in the swivel nut between the spring and spool.
The adjusting rod for adjustment spring decrement, the spring are equipped in further technical solution, in the swivel nut
Upper end is against in the groove of the adjusting rod lower part.
(3) advantageous effect
Compared with prior art, technical scheme of the present invention has the following advantages：It, can be with when the compact trimmer valve works
It is communicated according to A hydraulic fluid ports and B hydraulic fluid ports pressure size selection oil back chamber with the low pressure port of both A hydraulic fluid ports or B hydraulic fluid ports, and then realize two-way
Buffering, if A hydraulic fluid ports are high pressure, B hydraulic fluid ports are low pressure, then the pressure of A hydraulic fluid ports acts on the second steel ball and withstood on spliced eye
Lower end and by push rod by the first steel ball it is open-top be detached from spliced eye upper end, the fluid of such oil back chamber is through-flow by second
Hole, spliced eye, the first mounting groove, third through flow hole are communicated with B hydraulic fluid ports, while the pressure of A hydraulic fluid ports is applied on spool, push valve
Core compressed spring is so as to fulfill A hydraulic fluid ports to the buffering of B hydraulic fluid ports；If B hydraulic fluid ports are high pressure, A hydraulic fluid ports are the pressure of low pressure, then B hydraulic fluid ports
Act on upper end that spliced eye is withstood on the first steel ball and by the way that push rod will the second steel ball be open-top is detached under spliced eye
End, the fluid of such oil back chamber are communicated, while the pressure of B hydraulic fluid ports by the second through flow hole, spliced eye, the first through flow hole with A hydraulic fluid ports
Power is applied on spool, pushes spool compressed spring so as to fulfill B hydraulic fluid ports to the buffering of A hydraulic fluid ports.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of compact trimmer valve in the present embodiment.
The corresponding component names of reference numeral are：1. screw plug；2. valve seat；3. push rod；41. the first steel ball；42. the second steel ball
5. spool；6. spring base；7. swivel nut；8. spring；9. adjusting rod；10. plug；21. the first through flow hole；51. the second through flow hole；
52. third through flow hole；71. oil back chamber；201.A hydraulic fluid port；202.B hydraulic fluid port；501. interface；502. first mounting grooves；503. the
Two mounting grooves；
Specific embodiment
Referring to Fig. 1, the present invention provides a kind of compact trimmer valve, the swivel nut 7 including being equipped with valve seat 2, the valve seat 2
A hydraulic fluid ports 201 and B hydraulic fluid ports 202 are equipped with, is slidably connected in the valve seat 2 and is useful for control A hydraulic fluid ports 201 and 202 break-make of B hydraulic fluid ports
Spool 5, be equipped in the swivel nut 7 and force the spring 8 that the spool 5 is moved to the A hydraulic fluid ports 201, the spring 8 and spool
Spring base 6 is equipped between 5；The adjusting rod 9 for 8 decrement of adjustment spring is equipped in swivel nut 7,8 upper end of spring is against the tune
In the groove of pole lower part；The oil back chamber 71 to cooperate with the spool 5 is equipped in the swivel nut 7 at the spring 8；Institute
State in spool 5 and be axially arranged with spliced eye 501 along it, slidably connected in the spliced eye 501 with the push rod of its clearance fit 3,
The first mounting groove connected with the spliced eye 501 is respectively equipped in the spool 5 in the upper and lower ends of the spliced eye 501
502 and second mounting groove 503, it is respectively equipped with and the push rod 3 in first mounting groove 502 and second mounting groove 503
Coordinate the first steel ball 41 and the second steel ball 42 for controlling 501 break-make of spliced eye, be equipped with and be used in first mounting groove 502
The plug 10 that the first steel ball 41 is detached from the first mounting groove 502 is limited, is equipped with to limit the second steel in second mounting groove 503
Ball 42 is detached from the screw plug 1 of the second mounting groove 503；It is equipped in the screw plug 1 to connect the second mounting groove 503 and A hydraulic fluid ports 201
First through flow hole 21, the interior third through flow hole 52 being equipped with for connecting the first mounting groove 502 and B hydraulic fluid ports 202 of the spool 5, with
And the second through flow hole 51 for connecting the oil back chamber 71 and the spliced eye 501.
The compact trimmer valve work when, can according to A hydraulic fluid ports 201 and 202 pressure size of B hydraulic fluid ports selection oil back chamber 71 with
The low pressure port of 202 the two of A hydraulic fluid ports 201 or B hydraulic fluid ports communicates, and then realize bidirectional buffering；Concrete operating principle is：If A hydraulic fluid ports 201
For high pressure, B hydraulic fluid ports 202 are low pressure, then the pressure of A hydraulic fluid ports 201 is acted on the second steel ball 42 by the second through flow hole 22 by it
Withstand on the lower end of spliced eye 501 and by push rod 3 by the open-top upper end for being detached from spliced eye 501 of the first steel ball 41, such oil return
The fluid of chamber 71 passes through the second through flow hole 51, spliced eye 501, the first mounting groove 502,202 phase of third through flow hole 52 and B hydraulic fluid ports
It is logical, while the pressure of A hydraulic fluid ports 201 is applied on spool 5, spool 5 moves up under the promotion of 201 pressure of A hydraulic fluid ports, oil back chamber
71 fluid flows to B hydraulic fluid ports 202, and the fluid of A hydraulic fluid ports 201 overflows to B hydraulic fluid ports 202.
If B hydraulic fluid ports 202 are high pressure, A hydraulic fluid ports 201 are low pressure, then the pressure of B hydraulic fluid ports 202 is acted on by third through flow hole 52
The upper end of spliced eye 501 is withstood on the first steel ball 41 and by push rod 3 by 42 open-top disengaging spliced eye of the second steel ball
501 lower end, the fluid of such oil back chamber 71 pass through the second through flow hole 51, spliced eye 501, the first through flow hole 22 and A hydraulic fluid ports 201
It communicates, while the pressure of B hydraulic fluid ports 202 is applied on spool 5, spool 5 moves up under the promotion of 202 pressure of B hydraulic fluid ports, oil return
The fluid of chamber 71 flows to A hydraulic fluid ports 201, and the fluid of B hydraulic fluid ports 202 overflows to A hydraulic fluid ports 201.
Only it is the preferred embodiment of the present invention described in top, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of compact trimmer valve, which is characterized in that the swivel nut (7) including being equipped with valve seat (2) is set on the valve seat (2)
There are A hydraulic fluid ports (201) and B hydraulic fluid ports (202), be slidably connected in the valve seat (2) and be useful for control A hydraulic fluid ports (201) and B hydraulic fluid ports
(202) spool (5) of break-make, interior be equipped with of the swivel nut (7) force the spring that the spool (5) is moved to the A hydraulic fluid ports (201)
(8), the oil back chamber (71) to cooperate with the spool (5) is equipped in the swivel nut (7) at the spring (8)；The valve
It is axially arranged with spliced eye (501) along it in core (5), the push rod with its clearance fit is slidably connected in the spliced eye (501)
(3), the first peace connected with the spliced eye (501) is respectively equipped in the spool (5) at the both ends of the spliced eye (501)
It is respectively equipped in tankage (502) and the second mounting groove (503), first mounting groove (502) and second mounting groove (503)
Coordinate to control first steel ball (41) of spliced eye (501) break-make and the second steel ball (42) with the push rod (3), described first
It is equipped with to limit the plug (10) that the first steel ball (41) is detached from the first mounting groove (502), second peace in mounting groove (502)
It is equipped with to limit the screw plug (1) that the second steel ball (42) is detached from the second mounting groove (503) in tankage (503)；In the screw plug (1)
Equipped with for connecting the first through flow hole (21) of the second mounting groove (503) and A hydraulic fluid ports (201), it is equipped with and is used in the spool (5)
Connect the first mounting groove (502) and B hydraulic fluid ports (202) third through flow hole (52) and for connect the oil back chamber (71) and
The second through flow hole (51) of the spliced eye (501).
2. compact trimmer valve according to claim 1, which is characterized in that in the swivel nut (7) the spring (8) with
Spring base (6) is equipped between spool (5).
3. compact trimmer valve according to claim 1, which is characterized in that be equipped with to adjust bullet in the swivel nut (7)
The adjusting rod (9) of spring (8) decrement, spring (8) upper end are against in the groove of the adjusting rod lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052519.2A CN108223474A (en) | 2018-01-19 | 2018-01-19 | A kind of compact trimmer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810052519.2A CN108223474A (en) | 2018-01-19 | 2018-01-19 | A kind of compact trimmer valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223474A true CN108223474A (en) | 2018-06-29 |
Family
ID=62667943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810052519.2A Withdrawn CN108223474A (en) | 2018-01-19 | 2018-01-19 | A kind of compact trimmer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223474A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1001197A1 (en) * | 1998-11-09 | 2000-05-17 | Sun Hydraulics Corporation | Pilot operated pressure valve |
| DE19708741C2 (en) * | 1997-03-04 | 2001-02-22 | Dbt Gmbh | Pressure controlled 3/2-way valve |
| DE19945183A1 (en) * | 1999-09-21 | 2001-03-22 | Mannesmann Rexroth Ag | Seat valve |
| CN104776080A (en) * | 2015-04-08 | 2015-07-15 | 中联重科股份有限公司 | Damping valve, hoisting system and engineering machinery |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
-
2018
- 2018-01-19 CN CN201810052519.2A patent/CN108223474A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19708741C2 (en) * | 1997-03-04 | 2001-02-22 | Dbt Gmbh | Pressure controlled 3/2-way valve |
| EP1001197A1 (en) * | 1998-11-09 | 2000-05-17 | Sun Hydraulics Corporation | Pilot operated pressure valve |
| DE19945183A1 (en) * | 1999-09-21 | 2001-03-22 | Mannesmann Rexroth Ag | Seat valve |
| CN104776080A (en) * | 2015-04-08 | 2015-07-15 | 中联重科股份有限公司 | Damping valve, hoisting system and engineering machinery |
| CN105909584A (en) * | 2016-03-02 | 2016-08-31 | 杭州力龙液压有限公司 | Buffer overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180629 |
|
| WW01 | Invention patent application withdrawn after publication |