CN105422532B - A kind of buffer foot valve - Google Patents
A kind of buffer foot valve Download PDFInfo
- Publication number
- CN105422532B CN105422532B CN201510809611.5A CN201510809611A CN105422532B CN 105422532 B CN105422532 B CN 105422532B CN 201510809611 A CN201510809611 A CN 201510809611A CN 105422532 B CN105422532 B CN 105422532B
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- CN
- China
- Prior art keywords
- valve
- buffing pad
- room
- push rod
- valve body
- 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.)
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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
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanically-Actuated Valves (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to a kind of buffer foot valve, include pedal, push rod, upper valve body, lower valve body, pressure-reducing valve and buffing pad；Upper valve body is fixedly connected with the lower valve body；The upper end connection of pedal and push rod；Buffing pad is fixedly connected with push rod；Decompression valve chamber is provided with lower valve body；Pressure-reducing valve is arranged in pressure-reducing valve room；The lower end of decompression valve chamber is provided with spool bore；Decompression valve chamber is connected with oil inlet and control port respectively by spool bore.The present invention in the valve body of foot valve by setting buffing pad, and buffing pad is moved with the action of push rod, in buffing pad motion process, power is acted to the hydraulic oil in buffing pad room, and the reaction force that hydraulic oil is produced to push rod is reduced by the orifice valve on buffing pad, so as to eliminate the shake on pedal, so as to improve the operating accuracy of engineering machinery.
Description
Technical field
The invention belongs to hydraulic valve technical field, a kind of buffer foot valve is particularly related to.
Background technology
Foot valve is that engineering machinery is used to control one of part of operation, and the foot valve of existing technology is mounted on driver's cabin
It is interior, operated by operating personnel or driver with pin.
The characteristic and working environment of engineering machinery determine that it can produce larger vibrations in the course of the work, and such
Vibrations can be fed back on the pin of operating personnel by foot valve so that the foot of operating personnel can ceaselessly shake, not only to behaviour
The operation for making personnel brings influence, or even influences whether work quality and operating efficiency.
The content of the invention
, can be effective by the technical program it is an object of the invention to provide a kind of improved technology scheme of foot valve
The shake of pedal is reduced, operating accuracy is improved, and reduce the influence to operating personnel.
The present invention is achieved by the following technical solutions：
A kind of buffer foot valve, includes pedal, push rod, upper valve body, lower valve body, pressure-reducing valve and buffing pad；
The upper valve body is fixedly connected with the lower valve body；The pedal is connected with the upper end of the push rod；
Push rod perforation is provided with the upper valve body；Buffing pad room is provided with the upper valve body；The buffing pad
Room is connected with push rod perforation；The buffing pad is arranged in the buffing pad room, and the buffing pad is consolidated with the push rod
Fixed connection；
First through hole is provided with the buffing pad；The buffing pad by the buffing pad room be divided into upper buffing pad room and
Lower buffing pad room；The upper buffing pad room is connected with the lower buffing pad room by the first through hole；
The first oil back chamber is provided with the upper valve body；First oil back chamber respectively with the upper buffing pad room and return
Hydraulic fluid port is connected；
Decompression valve chamber is provided with the lower valve body；The pressure-reducing valve is arranged in the pressure-reducing valve room；The push rod
Lower end is connected with the pressure-reducing valve；
The second oil back chamber, oil inlet, control port are provided with the lower valve body；It is described decompression valve chamber respectively with it is described
Second oil back chamber, the oil inlet, the control port and the lower buffing pad room are connected；
Connected between the decompression valve chamber and the lower buffing pad room by the second through hole；
Second oil back chamber is connected with the spill port；
The lower end of the valve element is provided with spool bore；It is described decompression valve chamber by the spool bore respectively with the oil-feed
Mouth and control port connection.
The first orifice valve is provided with the first through hole；The upper buffing pad room passes through institute with the lower buffing pad room
State the first orifice valve unilaterally connected.
The second orifice valve is provided with second through hole；Pass through between the decompression valve chamber and the lower buffing pad room
The second orifice valve unilaterally connected.
Second oil back chamber is connected by first oil back chamber with the oil return opening.
The pressure-reducing valve includes valve element, relief spring and back-moving spring；The relief spring and the back-moving spring cover
In on the valve element；The relief spring is located between the valve element and the back-moving spring；The upper end of the valve element with it is described
Push rod is connected.
The beneficial effects of the invention are as follows：
The present invention in the valve body of foot valve by setting buffing pad, and buffing pad is moved with the action of push rod,
In buffing pad motion process, power is acted to the hydraulic oil in buffing pad room, and drop by the orifice valve on buffing pad
The reaction force that low hydraulic oil is produced to push rod, so that the shake on pedal is eliminated, so as to improve the work essence of engineering machinery
Degree.
Brief description of the drawings
Fig. 1 is buffer foot plate structure schematic diagram of the present invention；
Fig. 2 is upper valve body of the present invention and oil pocket schematic diagram in lower valve body；
Fig. 3 is enlarged drawing at Fig. 1 A；
Fig. 4 is enlarged drawing at Fig. 1 B.
Description of reference numerals
1 pedal, 2 push rods, 3 upper valve bodies, 4 lower valve bodies, 5 pressure-reducing valves, 6 buffing pad rooms, 7 buffing pads, 8 decompression valve chambers, 9 controls
Liquefaction mouthful, 10 first oil back chambers, 11 second oil back chambers, 12 oil return openings, 13 oil inlets, 14 spool bores, 51 valve elements, 52 reset bullet
Spring, 53 relief springs, buffing pad room, 62 times buffing pad rooms, 71 first through hole on 61.
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
The present invention provides a kind of buffer foot valve, as shown in Figures 1 to 4, include pedal 1, push rod 2, upper valve body 3,
Lower valve body 4, pressure-reducing valve 5 and buffing pad 7；In this application, the structure of lower valve body is identical with the foot valve valve body structure of existing technology,
The hydraulic principle of the application works by direct moving type hydraulic valve principle.
The upper valve body 3 is fixedly connected with the lower valve body 4；Pad etc. is additionally provided between upper valve body and lower valve body to prevent
Seepage part.The pedal 1 is flexibly connected with the upper end of the push rod 2；When stepping on pedal, pedal oppress push rod to
Lower motion；When unclamping pedal, push rod is moved upwards in the effect of hydraulic oil and pressure-reducing valve in the presence of back-moving spring, together
Shi Dingqi pedals so that pedal return.
Push rod perforation is provided with the upper valve body 3；Buffing pad room 6 is provided with the upper valve body；The buffering
Seat room is connected with push rod perforation；The buffing pad 7 is arranged in the buffing pad room 6, and the buffing pad 7 is pushed away with described
Bar 2 is fixedly connected；With the reciprocating motion of push rod, buffing pad is moved back and forth in buffing pad room simultaneously.
First through hole 71 is provided with the buffing pad 7；6 points of the buffing pad room is upper buffing pad by the slow seat 7
Room 61 and lower buffing pad room 62；The upper buffing pad room 61 is connected with the lower buffing pad room 62 by the first through hole 71；
The first orifice valve is provided with the first through hole；The upper buffing pad room hinders with the lower buffing pad room by described first
Buddhist nun's valve unilaterally connected.When buffing pad is moved downward, hydraulic oil enters upper buffing pad room by lower buffing pad room；When buffing pad is transported upwards
When dynamic, the first orifice valve is closed, and hydraulic oil can not be entered in lower surge chamber by upper surge chamber.
The first oil back chamber 10 is provided with the upper valve body 3；First oil back chamber 10 respectively with the upper buffing pad
Room 61 and oil return opening 12 are connected.
Decompression valve chamber 8 is provided with the lower valve body 4, four pressure-reducing valves are provided with altogether in the present embodiment, in lower valve body
One pressure-reducing valve is set in room, each pressure-reducing valve room；The pressure-reducing valve 5 is arranged in the decompression valve chamber 8；Under the push rod
End is connected with the pressure-reducing valve.
The second oil back chamber 11, oil inlet 13, control port 9 are provided with the lower valve body 4；The decompression valve chamber difference
It is connected with second oil back chamber, the oil inlet, the control port and the lower buffing pad room；
Connected between the decompression valve chamber and the lower buffing pad room by the second through hole；Set on second through hole
It is equipped with the second orifice valve；Pass through the second orifice valve unilaterally connected between the decompression valve chamber and the lower buffing pad room.I.e.
Hydraulic oil enters lower buffing pad room from decompression valve chamber by the second orifice valve, and can not enter decompression valve chamber from lower buffing pad room.
Second oil back chamber is connected with the spill port；In the present embodiment, second oil back chamber passes through described
First oil back chamber is connected with the oil return opening.
The lower end of the valve element 51 is provided with spool bore 14；It is described decompression valve chamber by the spool bore respectively with it is described
Oil inlet and control port connection.
The pressure-reducing valve 5 includes valve element 51, relief spring 53 and back-moving spring 52；The relief spring and the reset bullet
Spring is placed on the valve element；The relief spring is located between the valve element and the back-moving spring；The upper end of the valve element
It is connected with the push rod.
When without operational motion, pedal is maintained at neutral position, control port, spool bore, oil-feed by back-moving spring
Mouth is connected with fuel tank.
When pedal is operated, push rod overcomes the power of back-moving spring and relief spring, now, is promoted in relief spring
Under, corresponding valve element is moved downward, and blocks the hole that the second oil back chamber is connected with corresponding decompression valve chamber, while so that corresponding
Decompression valve chamber control port is connected with oil inlet by spool bore, when valve element and the power of relief spring and control port generation
During fluid pressure balance, control starts.
Due to the interaction between valve element and relief spring, the pressure of corresponding control port and the stroke of push rod into than
Example, thus it is proportional to stepping on position under pedal.
Push rod is pushed with pedal, moves down buffing pad, because being provided with the first orifice valve on buffing pad, and is delayed
Hydraulic oil is full of in red seat room, with moving down for buffing pad, hydraulic oil can by first orifice valve slowly flow through buffing pad
First orifice valve enters the first oil back chamber.When operating physical force is gradually reduced, buffing pad is moved up with push rod, because the first resistance
The one-way conduction of Buddhist nun's valve so that form partial vacuum in lower buffing pad room, so upper buffing pad room and lower buffing pad room it
Between form the pressure in pressure difference, and upper buffing pad room higher than the pressure in lower buffing pad room, this pressure differential is using acting on pin
After operating physical force on pedal suddenly disappears, pedal can only slowly be moved up with push rod.Meanwhile, in lower buffing pad room and pressure-reducing valve
Pressure differential is formed between room, now the pressure in pressure-reducing valve room is more than the pressure in lower buffing pad room, so that decompression valve chamber
Interior hydraulic oil is entered in lower buffing pad room by the second orifice valve, to fill up the vacuum section in lower buffing pad room, to connect down
Carry out moving down again for buffing pad, supplement hydraulic oil.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (3)
1. a kind of buffer foot valve, it is characterised in that：Include pedal, push rod, upper valve body, lower valve body, pressure-reducing valve and buffering
Seat；
The upper valve body is fixedly connected with the lower valve body；The pedal is connected with the upper end of the push rod；
Push rod perforation is provided with the upper valve body；Buffing pad room is provided with the upper valve body；The buffing pad room with
The push rod perforation connection；The buffing pad is arranged in the buffing pad room, and the buffing pad is fixed with the push rod and connected
Connect；
First through hole is provided with the buffing pad；The buffing pad room is divided into upper buffing pad room and lower slow by the buffing pad
Red seat room；The upper buffing pad room is connected with the lower buffing pad room by the first through hole；
The first oil back chamber is provided with the upper valve body；First oil back chamber respectively with the upper buffing pad room and oil return opening
Connection；
Decompression valve chamber is provided with the lower valve body；The pressure-reducing valve is arranged in the pressure-reducing valve room；The lower end of the push rod
It is connected with the pressure-reducing valve；
The second oil back chamber, oil inlet, control port are provided with the lower valve body；The decompression valve chamber is respectively with described second
Oil back chamber, the oil inlet, the control port and the lower buffing pad room are connected；
Connected between the decompression valve chamber and the lower buffing pad room by the second through hole；
Second oil back chamber is connected with the oil return opening；
The pressure-reducing valve includes valve element, relief spring and back-moving spring；The relief spring and the back-moving spring are placed on institute
State on valve element；The relief spring is located between the valve element and the back-moving spring；The upper end of the valve element and the push rod
Connection；
The lower end of the valve element is provided with spool bore；It is described decompression valve chamber by the spool bore respectively with the oil inlet and
The control port connection；
The first orifice valve is provided with the first through hole；The upper buffing pad room and the lower buffing pad room pass through described the
One orifice valve unilaterally connected.
2. buffer foot valve according to claim 1, it is characterised in that：The second damping is provided with second through hole
Valve；Pass through the second orifice valve unilaterally connected between the decompression valve chamber and the lower buffing pad room.
3. buffer foot valve according to claim 1, it is characterised in that：Second oil back chamber passes through first oil return
Chamber is connected with the oil return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809611.5A CN105422532B (en) | 2015-11-20 | 2015-11-20 | A kind of buffer foot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809611.5A CN105422532B (en) | 2015-11-20 | 2015-11-20 | A kind of buffer foot valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105422532A CN105422532A (en) | 2016-03-23 |
| CN105422532B true CN105422532B (en) | 2017-09-26 |
Family
ID=55500989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510809611.5A Active CN105422532B (en) | 2015-11-20 | 2015-11-20 | A kind of buffer foot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422532B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291675A (en) * | 1991-11-12 | 1994-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Fluid pressure control system with an accumulator responsive to a loss of system pressure |
| CN102128305A (en) * | 2010-12-31 | 2011-07-20 | 王贺新 | Pedal pneumatic valve |
| CN202597334U (en) * | 2012-05-14 | 2012-12-12 | 宁波海宏液压有限公司 | Buffering safety valve |
| CN103335163A (en) * | 2013-06-24 | 2013-10-02 | 玉林市富山液压件制造有限公司 | Traveling pilot valve with buffering function |
| CN103867764A (en) * | 2014-03-03 | 2014-06-18 | 青岛力克川液压机械有限公司 | Overflow valve for excavator walking motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6239420B2 (en) * | 2014-03-27 | 2017-11-29 | 株式会社ショーワ | Hydraulic shock absorber |
-
2015
- 2015-11-20 CN CN201510809611.5A patent/CN105422532B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291675A (en) * | 1991-11-12 | 1994-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Fluid pressure control system with an accumulator responsive to a loss of system pressure |
| CN102128305A (en) * | 2010-12-31 | 2011-07-20 | 王贺新 | Pedal pneumatic valve |
| CN202597334U (en) * | 2012-05-14 | 2012-12-12 | 宁波海宏液压有限公司 | Buffering safety valve |
| CN103335163A (en) * | 2013-06-24 | 2013-10-02 | 玉林市富山液压件制造有限公司 | Traveling pilot valve with buffering function |
| CN103867764A (en) * | 2014-03-03 | 2014-06-18 | 青岛力克川液压机械有限公司 | Overflow valve for excavator walking motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105422532A (en) | 2016-03-23 |
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