CN107246421A - A kind of one-way throttle valve and the tractor of one-way throttle valve is installed suppresses device - Google Patents
A kind of one-way throttle valve and the tractor of one-way throttle valve is installed suppresses device Download PDFInfo
- Publication number
- CN107246421A CN107246421A CN201710658888.1A CN201710658888A CN107246421A CN 107246421 A CN107246421 A CN 107246421A CN 201710658888 A CN201710658888 A CN 201710658888A CN 107246421 A CN107246421 A CN 107246421A
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- China
- Prior art keywords
- throttle valve
- fluid hole
- fluid
- hole
- valve plate
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Classifications
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- 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
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
Abstract
The invention discloses a kind of one-way throttle valve, including：Provided with logical oily cavity in valve body, valve body, the first end of valve body is provided with the first fluid hole, and the second end of valve body is provided with the second fluid hole, and the first fluid hole and the second fluid hole are connected with logical oily cavity respectively；It is provided with logical oil cavity on movable throttle valve plate, throttle valve plate and is provided with the throttle orifice that at least one fuel feeding liquid passes through, the first fluid hole is connected with the second fluid hole by throttle orifice.A kind of tractor suppresses device, and one-way throttle valve is arranged at the hydraulic circuit for suppressing device；One-way throttle valve is located at the fuel feed hole of the cavity of resorption for the lift cylinder for suppressing device, and the first fluid hole of one-way throttle valve is connected with the fuel feed hole of the cavity of resorption of lift cylinder.One-way throttle valve replaces the structures such as piston using throttle valve plate, and long-term use will not produce loosening phenomenon, and logical oil mass is big, using the device of suppressing of the one-way throttle valve, after long-term use, remains able to accurately control decrease speed, it is to avoid farm implements are damaged.
Description
Technical field
The present invention relates to throttle valve technology field, more particularly to a kind of one-way throttle valve and dragging for one-way throttle valve is installed
Device is suppressed in machine drawing.
Background technology
The one-way throttle valve of use of the prior art realizes the purpose of throttling by internal piston movement mostly, still
After a long time use, piston can produce loosening, cause the one-way throttle valve volume that restriction effect is not good and same, lead to oil mass compared with
It is small.
In modern tractor, generally lifter can be suppressed equipped with lifter is suppressed to lift or decline farm implements
The outer lift arm for suppressing lifter is driven using hydraulic pressure, can be due to self gravitation when turning to decline by lifting or neutral condition
Shake is produced when the power provided with hydraulic pressure to decline, decline impulsive force is big, in turn results in farm implements damage.So can be in hydraulic pressure
One-way throttle valve is set in loop, but foregoing one-way throttle valve is used in lifter is suppressed, makes to suppress lifter in length
After time use, lead to not accurately control decrease speed, so as to cause the damage of farm implements.
Therefore, the applicant proposes the application, to solve above-mentioned technical problem.
The content of the invention
It is an object of the invention to provide a kind of one-way throttle valve, oil mass can be led to larger and cause after avoiding long-time use
Restriction effect is not good, and a kind of tractor for being provided with one-way throttle valve is provided again and suppresses device, can be remained to after long-time use
Realize accurate control decrease speed, it is to avoid farm implements are damaged.
The technical scheme that the present invention is provided is as follows：
A kind of one-way throttle valve, including：Provided with logical oily cavity in valve body, the valve body, the first end of the valve body is provided with
First fluid hole, the second end of the valve body is provided with the second fluid hole, the first fluid hole and the second fluid hole respectively with institute
State logical oily cavity connection；It is provided with the logical oily cavity on movable throttle valve plate, the throttle valve plate and is provided with least one
The throttle orifice that fuel feeding liquid passes through, the first fluid hole is connected with the second fluid hole by the throttle orifice；When the choke valve
When piece is in throttle, the throttle valve plate is close to the one end in the second fluid hole and first the inner of the logical oily cavity
Face is fitted, and it is that fluid flows to fuel feeding liquid passes through in the second fluid hole, the valve body oil area from the first fluid hole
One oil area；When the throttle valve plate is in normal circulation status, the throttle valve plate is close to the first fluid hole
One end is fitted with the second inner face of the logical oily cavity, and fluid flows to the first fluid hole, the valve from the second fluid hole
The oil area that internal fuel feeding liquid passes through is the second oil area；Second oil area is more than the first oil area.
In said structure, a logical oily cavity is set in valve body, and sets a movable throttling in logical oily cavity
Valve block, to realize throttling.The first oil area when fluid flows to the second fluid hole from the first fluid hole is less than from second
Fluid hole flows to the second oil area during the first fluid hole, so throttling action can be realized, this structure is compared to existing skill
The structure of one-way throttle valve in art, it is simple in construction, and the structures such as piston commonly used in the prior art are eliminated, so as to avoid
Because the phenomenons such as loosening cause the problem of oil-saving effect is not good, and logical oil mass is big.
Preferably, there is logical oil-gap between the side wall of the throttle valve plate and the logical oily cavity；The throttle valve plate
Including：Valve block body, supporting part of the valve block body close to the one end in the first fluid hole is arranged on, the throttle orifice is arranged on
On the valve block body；When the throttle valve plate is in throttle, the throttle valve plate is close to the second fluid hole
One end is fitted on the first inner face of the logical oily cavity, and fluid flows to institute from the first fluid hole by the throttle orifice
The second fluid hole is stated, the logical oil-gap is blocked by the first inner face of the logical oily cavity；When the throttle valve plate is in just
During normal circulation status, the supporting part of the throttle valve plate is fitted in the logical oily cavity close to the one end in the first fluid hole
On second inner face, fluid flows to described first from the second fluid hole respectively through the throttle orifice and the logical oil-gap
Fluid hole.
In said structure, a logical oily cavity is set in valve body, and set in logical oily cavity a throttle valve plate and
There is logical oil-gap between the side wall of throttle valve plate and logical oily cavity.When being throttled, fluid is passed through from the first fluid hole
In logical oil cavity, by throttle valve plate top to logical oily cavity on first inner face in the second fluid hole so that fluid is from throttling
Pass through in valve block throttle orifice, and then realize restriction effect.When normal circulation, fluid enters logical oily cavity from the second fluid hole
It is interior, by throttle valve plate top to supporting part with leading to oily cavity on second inner face in the first fluid hole so that fluid enters logical
In oily cavity, and the first fluid hole is flowed to by throttle orifice and logical oil-gap respectively, now without restriction effect.The structure is used
Throttle valve plate floats in logical oily cavity and replaces piston of the prior art, will not produce the phenomenon for using and loosening for a long time,
And because this structure need not set other supplementary structures, so structure is simpler, lead to oil mass big.
Preferably, when the throttle valve plate is in throttle, the throttle valve plate is close to the second fluid hole
One end is fitted on the first inner face of the logical oily cavity, and the logical oil-gap is sealed by the first inner face of the logical oily cavity
Stifled, the throttle orifice is blocked by the first inner face part of the logical oily cavity, fluid from the first fluid hole by not by
The throttle orifice of closure flows to the second fluid hole；When the throttle valve plate is in normal circulation status, the throttling
The supporting part of valve block is fitted on the second inner face of the logical oily cavity close to the one end in the first fluid hole, and fluid is from institute
State the second fluid hole and flow to the first fluid hole respectively through the whole throttle orifice and the logical oil-gap.
In said structure, when throttle valve plate is in throttle, lead to the first inner face part closure throttling of oil cavity
Hole, so that, the throttle orifice that fluid can only not blocked by remainder passes through, and realizes more preferable restriction effect.
Preferably, also it is provided with least one oil-through-hole on the valve block body of the throttle valve plate；At the throttle valve plate
When throttle, the throttle valve plate is fitted in first the inner of the logical oily cavity close to the one end in the second fluid hole
On face, the oil-through-hole and logical oil-gap are blocked by the first inner face of the logical oily cavity, and institute is passed through in the first fluid hole
State throttle orifice and flow to the second fluid hole；When the throttle valve plate is in normal circulation status, the branch of the throttle valve plate
Support part is fitted on the second inner face of the logical oily cavity close to the one end in the first fluid hole, and fluid is oily from described second
Fluid apertures flows to the first fluid hole respectively through the throttle orifice, logical oil-gap and oil-through-hole.
In said structure, at least one oil-through-hole is additionally provided with valve block body, throttling shape can be in throttle valve plate
Blocked during state by the first inner face of logical oily cavity, when throttle valve plate is in normal circulation status, oil-through-hole enables to oil
Liquid passes through, and further increases throttle valve plate in the second oil area under normal circulation status, leads to oil mass increase.
Preferably, when the throttle valve plate is in throttle, the throttle valve plate is close to the second fluid hole
One end is fitted on the first inner face of the logical oily cavity, and the throttle orifice is partly blocked, and fluid is from first fluid
Hole flows to the second fluid hole by the throttle orifice not blocked；When the throttle valve plate is in normal circulation status
When, the throttle valve plate is fitted on the second inner face of the logical oily cavity close to the one end in the first fluid hole, fluid
The first fluid hole is flowed to from the second fluid hole by the whole throttle orifice.
Preferably, also it is provided with least one oil-through-hole on the valve block body of the throttle valve plate；The throttle valve plate includes：
Valve block body, it is arranged on supporting part of the valve block body close to the one end in the first fluid hole, the throttle orifice is arranged on described
On valve block body；When the throttle valve plate is in throttle, the one end of the throttle valve plate close to the second fluid hole
On the first inner face for being fitted in the logical oily cavity, the oil-through-hole is blocked by the first inner face of the logical oily cavity, institute
State the first fluid hole and flow to the second fluid hole by the throttle orifice；When the throttle valve plate is in normal circulation status
When, the supporting part of the throttle valve plate is fitted in the second inner face of the logical oily cavity close to the one end in the first fluid hole
On, fluid flows to the first fluid hole from the second fluid hole respectively through the throttle orifice and oil-through-hole.
Preferably, the size in the second fluid hole is less than the size of the throttle valve plate, when the throttle valve plate is in
During throttle, the oil-through-hole is blocked by the first inner face of the logical oily cavity, and fluid passes through from the first fluid hole
The throttle orifice flows to the second fluid hole.
In said structure, the size in the second fluid hole is limited, when throttle valve plate is in throttle so that logical oil is empty
First inner face of chamber can block oil-through-hole, and then fluid is only circulated from throttle orifice, realize restriction effect, tie
Structure is simple.
Preferably, the size in the first fluid hole is less than the size of the supporting part；The supporting part is some supports
Block, circumferential direction arrangement of some support blocks along the throttle valve plate；The throttle orifice is located at the throttle valve plate
Center, the oil-through-hole is staggered with the support block.
In said structure, by the size being dimensioned to less than supporting part in the first fluid hole, it ensure that supporting part exists
Throttle valve plate can prop up the second inner face of logical oily cavity in normal circulation status, and then reserve fuel feeding liquid for throttle orifice
The path passed through, it is ensured that the normal circulation of fluid.
Preferably, the valve body is split type, is divided into upper valve body and lower valve body；The lower surface of the upper valve body is provided with accommodating
Groove, the upper surface of the lower valve body cooperatively forms the logical oily cavity with the storage tank；The upper surface of the upper valve body is provided with
The second fluid hole, the lower surface of the lower valve body is provided with the first fluid hole.
In said structure, by the way that valve body is arranged into split type, more facilitate in manufacture and assembling process.
A kind of tractor for being provided with one-way throttle valve suppresses device, and the one-way throttle valve is arranged on the liquid for suppressing device
Push back at road；The one-way throttle valve is located at the fuel feed hole of the cavity of resorption for the lift cylinder for suppressing device, the one-way throttle valve
The first fluid hole connected with the fuel feed hole of the cavity of resorption of the lift cylinder.
, can at the fuel feed hole that one-way throttle valve is arranged on to the cavity of resorption for the lift cylinder for suppressing device in said structure
When suppressing device decline, throttling action is produced, it is to avoid decrease speed is fast and causes farm implements to damage, because one-way throttle valve is used
Valve block is just stayed to replace the structures such as piston, so after a long time use, remaining to realize accurate control to the decrease speed for suppressing device
System.
A kind of one-way throttle valve that the present invention is provided and the tractor of one-way throttle valve is installed suppresses device, can bring
Following beneficial effect：
A kind of new one-way throttle valve arrangement is provided in the present invention, simple in construction, throttle valve plate therein can be
Floated in logical oil cavity, and then realize throttle and normal circulation status respectively, eliminate piston commonly used in the prior art
Etc. structure, so as to avoid because the phenomenons such as loosening cause oil-saving effect not good.In the case of same volume, other auxiliary are not required to
Structure, so logical oil mass is bigger.Device is suppressed present invention also offers a kind of tractor for being provided with one-way throttle valve, by making
With the one-way throttle valve in the present invention, remain to accurately adjust the decrease speed for suppressing device after a long time use.
Brief description of the drawings
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to one-way throttle valve and is provided with
Above-mentioned characteristic, technical characteristic, advantage and its implementation that the tractor of one-way throttle valve suppresses device are further described.
Fig. 1 is the structural representation under the throttle of the one-way throttle valve of the present invention；
Fig. 2 is the structural representation under the normal circulation status of the one-way throttle valve of the present invention；
Fig. 3 is the structural representation of the throttle valve plate in Fig. 1；
Fig. 4 is the structural representation for suppressing device for being provided with the one-way throttle valve shown in Fig. 1.
Drawing reference numeral explanation：
1- valve bodies, 1a- upper valve bodies, 1b- lower valve bodies, the logical oily cavitys of 2-, 2a- leads to oil-gap, 3- throttle valve plates, 3a- valve blocks
Body, 3b- supporting parts, 3c- throttle orifices, 3d- oil-through-holes, the first fluid of 4- hole, the second fluid of 5- hole, 6- oil cylinders cavity of resorption connection oil
Pipe, 7- one-way throttle valves, 8- oil cylinder mounting brackets, 9- rear axle assys, 10- lifter assemblies, 11- hydraulic valve oil inlet pipes, 12- liquid
Pressure valve mounting bracket, 13- lifting connection cylinder upper cavity oil oil inlet pipes, 14- hydraulic multitandem valves, 15- hydraulic valve oil return pipes, 16- lifting connection
Fluid stream under oil cylinder cavity of resorption oil inlet pipe, the outer lift arms of 17-, 18- lift cylinders, 19- cylinder upper cavity oil connected pipes, A- throttles
Fluid flow direction under dynamic direction, the normal circulation status of B-.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
To make only to schematically show part related to the present invention in simplified form, each figure, their not generations
Table its as product practical structures.
【Embodiment 1】
Embodiment 1 discloses a kind of embodiment of one-way throttle valve, including：On valve body and throttle valve plate, valve body
Provided with the first fluid hole being sequentially communicated, logical oily cavity and the second fluid hole.Throttle valve plate is located in logical oily cavity, and can be
Floated in logical oil cavity.Throttle valve plate includes valve block body, is arranged at supporting part of the valve block body close to first fluid hole one end
The throttle orifice passed through with setting with a fuel feeding liquid on valve block body.
When throttle valve plate is in throttle, the one end and the first of logical oily cavity of throttle valve plate close to the second fluid hole
Inner face is fitted, and fluid flows to the second fluid hole from the first fluid hole, and the oil area that the fuel feeding liquid of throttle valve plate passes through is the
One oil area；
When throttle valve plate is in normal circulation status, the one end and logical oily cavity of throttle valve plate close to the first fluid hole
Second inner face is fitted, and fluid flows to the first fluid hole from the second fluid hole, the oil area that the fuel feeding liquid of throttle valve plate passes through
For the second oil area；
Second oil area is more than the first oil area.
By setting the throttle valve plate floated to realize restriction effect in the present embodiment, due to without using piston etc., institute
To be not in the phenomenon loosened occur after being used for a long time, and due to saving other supplementary structures, so logical oil mass is bigger.
【Embodiment 2】
As depicted in figs. 1 and 2, embodiment 2 is on the basis of embodiment 1, the throttle valve plate 3 of embodiment 2 and logical oily cavity 2
Between there is logical oil-gap 2a.As shown in figure 1, when throttle valve plate 3 is in throttle, throttle valve plate 3 is close to the second fluid
The one end in hole 5 is fitted on the first inner face of logical oily cavity 2 (upper surface of the logical oily cavity 2 in Fig. 1), and fluid is oily from first
Fluid apertures 4 flows to the second fluid hole 5 by throttle orifice, leads to oil-gap 2a and is blocked by the first inner face of logical oily cavity 2；Such as Fig. 2 institutes
Show, when throttle valve plate 3 is in normal circulation status, the supporting part 3b of throttle valve plate 3 fits close to the one end in the first fluid hole 4
On the second inner face of logical oily cavity 2 (lower surface of the logical oily cavity 2 in Fig. 2), fluid from the second fluid hole 5 respectively through
Throttle orifice 3c and logical oil-gap 2a flow to the first fluid hole 4.
Compared to embodiment 1, in normal circulation status, the logical oil mass of this structure is bigger.
【Embodiment 3】
Embodiment 3 is on the basis of embodiment 1 or 2, and the throttle orifice of embodiment 3 has 4, when throttle valve plate is in throttling shape
During state, the first inner face of logical oil cavity blocks the part circulation area of throttle orifice, can be that a throttle orifice is partly sealed
Stifled or multiple throttle orifices are partly blocked, the part circulation area circulation that fluid is not blocked from throttle orifice.
In other specific embodiments, the quantity of throttle orifice is not limited to 4 or other quantity, such as 1,2
Deng.Here is omitted.
【Embodiment 4】
As shown in figure 1, embodiment 4 discloses a kind of embodiment of one-way throttle valve, including：Valve body 1 and throttling
Oily cavity 2 is led in valve block 3, being internally provided with for the valve body 1, and the first end of valve body 1 is provided with the first fluid hole 4, and the second end is provided with
Second fluid hole 5, wherein, the first fluid hole 4 is connected with logical oily cavity 2 respectively with the second fluid hole 5.
Throttle valve plate 3 is arranged in logical oily cavity 2, can be floated in logical oily cavity 2, throttle valve plate 3 includes valve block sheet
Body 3a, it is arranged on supporting part 3bs of the valve block body 3a on the one end in the first fluid hole 4, and is provided with valve block body 3a 1
There is the logical oil-gap 2a of fuel feeding liquid circulation between individual throttle orifice 3c and 4 oil-through-hole 3d, and throttle valve plate 3 and logical oily cavity 2.
The working condition to one-way throttle valve is illustrated below：
When throttle valve plate 3 is in throttle, fluid enters in logical oily cavity 2 from the first fluid hole 4, leads to oil cavity 2
Throttle valve plate 3 is fitted on the first inner face of logical oily cavity 2 by interior fluid close to the one end in the second fluid hole 5, leads to oil empty
First inner face of chamber 2 blocks oil-through-hole 3d and logical oil-gap 2a so that fluid circulates from throttle orifice 3c, under throttle
Fluid flow direction A is as shown in Figure 1.
When throttle valve plate 3 is in normal circulation status, fluid enters in logical oily cavity 2 from the second fluid hole 5, leads to oil empty
The supporting part 3b of throttle valve plate 3 one end close to the first fluid hole 4 is fitted in the second of logical oily cavity 2 by the fluid in chamber 2
On inner face so that fluid in the throttle orifice 3c of throttle valve plate 3, oil-through-hole 3d and logical oil-gap 2a by circulating, normal circulation
Fluid flow direction B is as shown in Figure 2 under state.
In the present embodiment, by the knot that the structure of one-way throttle valve is designed to carry in logical oily cavity 2 to throttle valve plate 3
Structure, by fluid so that throttle valve plate 3 floats, and then realizes throttle or normal circulation status, compared to using piston
Be not in the phenomenons such as loosening etc. structure.And it is relatively simple for structure, without other unnecessary structures, therefore and prior art
One-way throttle valve there is identical structure in the case of, lead to oil mass it is larger.Meanwhile, the increased oil-through-hole structure of the present embodiment
Further such that logical oil mass increase.
【Embodiment 5】
Embodiment 5 is on the basis of embodiment 4, and the one-way throttle valve of embodiment 5 is when throttle valve plate is in throttle, section
The first inner face of the logical oily cavity of one end laminating of the valve block close to the second fluid hole is flowed, now, part oil-through-hole is by first
Inner face is blocked, and fluid circulates out of throttle orifice and part are not blocked oil-through-hole.Part oil-through-hole is blocked, and can be one
Individual oil-through-hole is partly blocked or multiple oil-through-holes are partly blocked.
【Embodiment 6】
As shown in Figure 1, 2, 3, embodiment 6 is on the basis of embodiment 4, and the throttle orifice 3c of embodiment 6 is located at throttle valve plate 3
Center, circumferential direction arrangements of 4 oil-through-hole 3d along throttle valve plate 3 in addition, the size in the second fluid hole 5 is less than choke valve
The size of piece 3, when throttle valve plate 3 is in throttle, the side wall of logical oil cavity 2 blocks 4 oil-through-hole 3d, is only located at section
The throttle orifice 3c at stream valve block 3 center is connected with the second fluid hole 5.
Specifically, supporting part 3b is 4 pieces of curved support blocks, what support block was arranged with the circumferential direction along throttle valve plate 3
Oil-through-hole 3d is staggered, and the size in the first fluid hole 4 is less than supporting part 3b size, when throttle valve plate 3 is in normal circulation
During state, supporting part 3b props up the second inner face of logical oily cavity 2, is that throttle orifice 3c, oil-through-hole 3d and logical oil-gap 2a are provided
The passage that fuel feeding liquid passes through, it is ensured that the smooth circulation of fluid.
In other specific embodiments, oil-through-hole 3d quantity is not limited to 4 or other quantity, herein not
Repeat again.
【Embodiment 7】
Embodiment 7 does not have on the basis of embodiment 2~6 in embodiment 7 between the side wall of throttle valve plate and logical oily cavity
There is logical oil-gap.
【Embodiment 8】
As illustrated in fig. 1 and 2, embodiment 8 is on the basis of embodiment 1~7, and the valve body 1 of embodiment 8 is split type, is divided into
Upper valve body 1a and lower valve body 1b, wherein, upper valve body 1a lower surface is provided with storage tank, the upper surface of the storage tank and lower valve body 1b
Logical oily cavity 2 is cooperatively formed, upper valve body 1a is provided with the second fluid hole 5, and lower valve body 1b is provided with the first fluid hole 4.
By the way that valve body 1 is arranged into split type, more facilitate in manufacture and assembling process.
【Embodiment 9】
As illustrated in fig. 1 and 2, embodiment 9 is on the basis of embodiment 8, the upper valve body 1a of embodiment 9 lower surface and lower valve
Body 1b junction is provided with the second welding groove, and lower valve body 1b upper surface is with upper valve body 1a junction provided with the first welding slope
Mouthful, upper valve body 1a and lower valve body 1b is welded to connect and polished with the second welding groove by the first welding groove.Such way
It ensure that weld strength.
【Embodiment 10】
As shown in figure 4, embodiment 10, which discloses a kind of tractor for being provided with one-way throttle valve, suppresses device, including it is above-mentioned
Any one one-way throttle valve in embodiment 1~9, in addition to：Rear axle assy 9, the lifter assembly being arranged on rear axle assy 9
10th, with lifting assembly be connected outer lift arm 17, by bolt installed in the top of lifter assembly 10 hydraulic valve mounting bracket
12nd, the hydraulic multitandem valve 14 in hydraulic valve mounting bracket 12 is arranged on by bolt, hydraulic multitandem valve 14 enters provided with hydraulic valve
Oil pipe 11 and hydraulic valve oil return pipe 15, the oil cylinder mounting bracket 8 on rear axle assy 9.Also include lift cylinder 18, lifting
Oil cylinder 18 is connected by bearing pin with outer lift arm 17 and oil cylinder mounting bracket 8 respectively.Wherein, the first fluid of one-way throttle valve 7
Hole is connected with the fuel feed hole of the cavity of resorption of lift cylinder 18, and the second fluid hole and the oil cylinder cavity of resorption connected pipes 6 of one-way throttle valve 7 connect
It is logical.
The lifting connection of hydraulic multitandem valve 14 pass sequentially through lifting connection oil cylinder cavity of resorption oil inlet pipe 16, oil cylinder cavity of resorption connected pipes 6,
One-way throttle valve 7 is connected with the cavity of resorption of lift cylinder 18.The lifting connection of hydraulic multitandem valve 14 is also passed sequentially through on lifting connection oil cylinder
Chamber oil inlet pipe 13, cylinder upper cavity oil connected pipes 19 are connected with the epicoele of lift cylinder 18.
The workflow for suppressing device of the tractor of the present embodiment is as follows：
When farm implements are lifted：Hydraulic multitandem valve 14 is in lifting position, and it is many that fluid enters hydraulic valve by hydraulic valve oil inlet pipe 11
In the valve of road, and pass sequentially through the lifting connection oil cylinder cavity of resorption oil inlet pipe 16 be connected with lifting connection, oil cylinder cavity of resorption connected pipes 6, unidirectionally
Choke valve 7 enter lift cylinder 18 cavity of resorption, now, one-way throttle valve 7 be in normal circulation status, equivalent to one section oil pipe,
Piston rod in lift cylinder 18 extends in the presence of the cavity of resorption oil pressure of lift cylinder 18, drives the outer dextrorotation of lift arm 17
Turn, so as to drive farm implements to be lifted, while the epicoele fluid of lift cylinder 18 passes through on cylinder upper cavity oil connected pipes 19, lifting connection oil cylinder
Chamber oil inlet pipe 13 enters hydraulic multitandem valve 14, and is carried out by the hydraulic valve oil return pipe 15 being connected with the oil return opening of hydraulic multitandem valve 14
Oil return.
When farm implements decline：Hydraulic multitandem valve 14 is in lower decrease, and now fluid is more into hydraulic pressure through hydraulic valve oil inlet pipe 11
In road valve 14, then the pressure output and lifting connection cylinder upper cavity oil oil inlet pipe 13 of process hydraulic multitandem valve 14 are connected, and fluid enters
The epicoele of lift cylinder 18 so that piston rod shortens, meanwhile, the fluid in the cavity of resorption of lift cylinder 18 passes sequentially through one-way throttle
Valve 7, oil cylinder cavity of resorption connected pipes 6 enter hydraulic multitandem valve 14, and the hydraulic valve by being connected with the oil return opening of hydraulic multitandem valve 14
Oil return pipe 15 carries out oil return, now, and one-way throttle valve 7 is in throttle.
When farm implements decline, one-way throttle valve 7 works, make lift cylinder 18 cavity of resorption fluid by choke valve when,
Fluid is damped, and pressure reduces, so as to slow down impulsive force when farm implements decline, makes farm implements decrease speed steady, it is to avoid to decline
Damage that is too fast and causing farm implements.And due to replacing the structures such as piston using throttle valve plate in the one-way throttle valve 7, for a long time
It cannot be loosened after after use, and then remain to accurately adjust decrease speed after long-time use.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, is not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of one-way throttle valve, it is characterised in that including：
Provided with logical oily cavity in valve body, the valve body, the first end of the valve body is provided with the first fluid hole, the second of the valve body
End is provided with the second fluid hole, and the first fluid hole and the second fluid hole are connected with the logical oily cavity respectively；
It is provided with the logical oily cavity on movable throttle valve plate, the throttle valve plate and is provided with what at least one fuel feeding liquid passed through
Throttle orifice, the first fluid hole is connected with the second fluid hole by the throttle orifice；
When the throttle valve plate is in throttle, the throttle valve plate leads to close to the one end in the second fluid hole with described
The first inner face laminating of oily cavity, fluid flows to fuel feeding liquid in the second fluid hole, the valve body from the first fluid hole and led to
The oil area crossed is the first oil area；
When the throttle valve plate is in normal circulation status, the one end and institute of the throttle valve plate close to the first fluid hole
The second inner face laminating of logical oily cavity is stated, fluid flows to fuel feeding in the first fluid hole, the valve body from the second fluid hole
The oil area that liquid passes through is the second oil area；
Second oil area is more than the first oil area.
2. one-way throttle valve according to claim 1, it is characterised in that：
There is logical oil-gap between the side wall of the throttle valve plate and the logical oily cavity；
The throttle valve plate includes：Valve block body, supporting part of the valve block body close to the one end in the first fluid hole is arranged on,
The throttle orifice is arranged on the valve block body；
When the throttle valve plate is in throttle, the throttle valve plate is fitted in institute close to the one end in the second fluid hole
On the first inner face for stating logical oily cavity, fluid flows to second fluid from the first fluid hole by the throttle orifice
Hole, the logical oil-gap is blocked by the first inner face of the logical oily cavity；
When the throttle valve plate is in normal circulation status, the supporting part of the throttle valve plate is close to the first fluid hole
One end is fitted on the second inner face of the logical oily cavity, fluid from the second fluid hole respectively through the throttle orifice and
The logical oil-gap flows to the first fluid hole.
3. one-way throttle valve according to claim 2, it is characterised in that：
When the throttle valve plate is in throttle, the throttle valve plate is fitted in institute close to the one end in the second fluid hole
On the first inner face for stating logical oily cavity, the logical oil-gap is blocked by the first inner face of the logical oily cavity, the throttling
Hole is blocked by the first inner face part of the logical oily cavity, and fluid passes through the section not blocked from the first fluid hole
Discharge orifice flows to the second fluid hole；
When the throttle valve plate is in normal circulation status, the supporting part of the throttle valve plate is close to the first fluid hole
One end is fitted on the second inner face of the logical oily cavity, and fluid is from the second fluid hole respectively through the whole throttling
Hole and the logical oil-gap flow to the first fluid hole.
4. one-way throttle valve according to claim 2, it is characterised in that：
At least one oil-through-hole is also provided with the valve block body of the throttle valve plate；
When the throttle valve plate is in throttle, the throttle valve plate is fitted in institute close to the one end in the second fluid hole
On the first inner face for stating logical oily cavity, the oil-through-hole and logical oil-gap are blocked by the first inner face of the logical oily cavity,
The first fluid hole flows to the second fluid hole by the throttle orifice；
When the throttle valve plate is in normal circulation status, the supporting part of the throttle valve plate is close to the first fluid hole
One end is fitted on the second inner face of the logical oily cavity, fluid from the second fluid hole respectively through the throttle orifice,
Logical oil-gap and oil-through-hole flow to the first fluid hole.
5. one-way throttle valve according to claim 1, it is characterised in that：
When the throttle valve plate is in throttle, the throttle valve plate is fitted in institute close to the one end in the second fluid hole
On the first inner face for stating logical oily cavity, the throttle orifice is partly blocked, and fluid is from the first fluid hole by not sealed
The stifled throttle orifice flows to the second fluid hole；
When the throttle valve plate is in normal circulation status, the throttle valve plate is fitted close to the one end in the first fluid hole
On the second inner face of the logical oily cavity, fluid flows to described the from the second fluid hole by the whole throttle orifice
One fluid hole.
6. one-way throttle valve according to claim 1 or 5, it is characterised in that：
At least one oil-through-hole is also provided with the valve block body of the throttle valve plate；
The throttle valve plate includes：Valve block body, supporting part of the valve block body close to the one end in the first fluid hole is arranged on,
The throttle orifice is arranged on the valve block body；
When the throttle valve plate is in throttle, the throttle valve plate is fitted in institute close to the one end in the second fluid hole
On the first inner face for stating logical oily cavity, the oil-through-hole is blocked by the first inner face of the logical oily cavity, first oil
Fluid apertures flows to the second fluid hole by the throttle orifice；
When the throttle valve plate is in normal circulation status, the supporting part of the throttle valve plate is close to the first fluid hole
One end is fitted on the second inner face of the logical oily cavity, fluid from the second fluid hole respectively through the throttle orifice and
Oil-through-hole flows to the first fluid hole.
7. one-way throttle valve according to claim 6, it is characterised in that：
The size in the second fluid hole is less than the size of the throttle valve plate, when the throttle valve plate is in throttle,
The oil-through-hole is blocked by the first inner face of the logical oily cavity, and fluid passes through the throttle orifice stream from the first fluid hole
To the second fluid hole.
8. one-way throttle valve according to claim 6, it is characterised in that：
The size in the first fluid hole is less than the size of the supporting part；
The supporting part is some support blocks, circumferential direction arrangement of some support blocks along the throttle valve plate；
The throttle orifice is located at the center of the throttle valve plate, and the oil-through-hole is staggered with the support block.
9. one-way throttle valve according to claim 1, it is characterised in that：
The valve body is split type, is divided into upper valve body and lower valve body；
The lower surface of the upper valve body is provided with storage tank, and the upper surface of the lower valve body cooperatively forms described logical with the storage tank
Oily cavity；
The upper surface of the upper valve body is provided with the second fluid hole, and the lower surface of the lower valve body is provided with first fluid
Hole.
10. a kind of tractor for being provided with claim 1~9 one-way throttle valve described in any one suppresses device, it is special
Levy and be：
The one-way throttle valve is arranged at the hydraulic circuit for suppressing device；
The one-way throttle valve is located at the fuel feed hole of the cavity of resorption for the lift cylinder for suppressing device, and the first of the one-way throttle valve
Fluid hole is connected with the fuel feed hole of the cavity of resorption of the lift cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658888.1A CN107246421B (en) | 2017-08-04 | 2017-08-04 | One-way throttle valve and tractor forced-compression device provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658888.1A CN107246421B (en) | 2017-08-04 | 2017-08-04 | One-way throttle valve and tractor forced-compression device provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107246421A true CN107246421A (en) | 2017-10-13 |
| CN107246421B CN107246421B (en) | 2023-08-15 |
Family
ID=60012072
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710658888.1A Active CN107246421B (en) | 2017-08-04 | 2017-08-04 | One-way throttle valve and tractor forced-compression device provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107246421B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074616Y (en) * | 2007-07-23 | 2008-06-18 | 徐正保 | Accessory type one-way throttle valve |
| CN204041595U (en) * | 2014-07-21 | 2014-12-24 | 第一拖拉机股份有限公司 | Mechanism's rate of descent control gear suppressed by large-scale wheeled tractor |
| CN104696638A (en) * | 2013-12-09 | 2015-06-10 | 江苏江淮动力股份有限公司 | Unidirectional fixed throttle pipe joint |
-
2017
- 2017-08-04 CN CN201710658888.1A patent/CN107246421B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201074616Y (en) * | 2007-07-23 | 2008-06-18 | 徐正保 | Accessory type one-way throttle valve |
| CN104696638A (en) * | 2013-12-09 | 2015-06-10 | 江苏江淮动力股份有限公司 | Unidirectional fixed throttle pipe joint |
| CN204041595U (en) * | 2014-07-21 | 2014-12-24 | 第一拖拉机股份有限公司 | Mechanism's rate of descent control gear suppressed by large-scale wheeled tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107246421B (en) | 2023-08-15 |
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