CN208348572U - A kind of clutch power-assisted valve - Google Patents
A kind of clutch power-assisted valve Download PDFInfo
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- CN208348572U CN208348572U CN201820978204.6U CN201820978204U CN208348572U CN 208348572 U CN208348572 U CN 208348572U CN 201820978204 U CN201820978204 U CN 201820978204U CN 208348572 U CN208348572 U CN 208348572U
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- cavity
- valve
- restriction
- spool
- assisted
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Abstract
A kind of clutch power-assisted valve.Solves not set booster valve in existing big-powered tractor, so that the problem that operation is laborious.It includes valve body, spool, valve pocket, orifice union, the orifice union includes first segment head piece, second restriction, third restriction, 4th restriction, the intracorporal space of valve is divided into the first cavity by the valve pocket, second cavity and third cavity, the spool has the first position for when installation the first cavity being connected by orifice union with the second cavity, the second position of first segment head piece and the 4th restriction is slid by footboard drives and closed in valve pocket, the third place opened third restriction and drive valve pocket to move synchronously by the pressure oil of oil inlet is slid by footboard drives.The advantages that the utility model also has structure simple, easy to assembly, rapid operation, reliable in action, long service life.
Description
Technical field
The utility model relates to vehicle accessory fields, and in particular to a kind of clutch power-assisted valve.
Background technique
Clutch is in the bell housing between engine and gearbox, and while the car is driving, driver can basis
It needs to tip into or out clutch pedal, engine is made to be temporarily separated with gearbox and gradually engage, started with cutting off or transmitting
The power that machine is inputted to speed changer.Clutch is the common components in machine driving, can transmission system be separated or be engaged at any time.
Clutch power-assisted valve is neutral gear, engagement and the skidding for assisting foot pedal control clutch.In existing middle big-powered tractor, by
In directly with manpower control clutch operating it is very laborious, and common clutch power-assisted valve cannot be adapted to, thus need from
Clutch booster valve auxiliary.
Utility model content
To solve in background technique not set booster valve in existing big-powered tractor, so that the problem that operation is laborious, this
Utility model provides a kind of clutch power-assisted valve.
The technical solution of the utility model is: a kind of clutch power-assisted valve, including valve body, and power-assisted is equipped in the valve body
Component and orifice union, the power-assisted component include spool and valve pocket, and the orifice union includes first segment head piece, second
Restriction, third restriction, the 4th restriction, are equipped with the accommodating cavity being inserted into for spool in the valve pocket, on the spool
Equipped with cavity, the intracorporal space of valve is divided into the first cavity, the second cavity and third cavity, the valve body by the valve pocket
It is equipped with oil inlet, oil return opening and the control mouth for being connected with clutch oil cylinder, first cavity and oil inlet phase
Connection, second cavity are connected with oil return opening, and the third cavity is connected with control mouth, and the spool has
The first position for making the first cavity be connected by orifice union with the second cavity when installation, by footboard drives in valve pocket
The second position for sliding and closing first segment head piece and the 4th restriction is slid by footboard drives and opens third restriction and lead to
The third place that the pressure oil crossed at oil inlet drives valve pocket to move synchronously, the oil inlet when spool is in the third place
Pressure oil moves synchronously compression third chamber by third restriction, the cavity on spool and by assist rate band movable valve plug, valve pocket
Body.
As a kind of improvement of the utility model, it is equipped with the first elastic component in the valve pocket, is equipped in the valve body
For the second elastic component of valve pocket return, the both ends of first elastic component offset with valve sleeving inner wall and spool respectively, described
The both ends of the second elastic component offset respectively with valve pocket outer wall and valve body, the elastic force of first elastic component is less than the second elastic component
Elastic force.
First elastic component makes spool multiple after having release foot pedal as a further improvement of the utility model,
The movement tendency of position, accommodating cavity is connected by the 4th restriction with the second cavity, oil return opening during the valve core reset.
The first segment head piece, the second restriction, third restriction, the as a further improvement of the utility model,
Four restrictions are set on valve pocket, and the first segment head piece, third restriction are connected with the first cavity, and described second
Restriction, the 4th restriction are connected with the second cavity.
It is equipped between the spool outer wall and valve sleeving inner wall as a further improvement of the utility model, and is connected to chamber, valve
The first cavity is connected by first segment head piece, connection chamber, the second restriction with the second cavity when core is in first position.
The first segment head piece, the second restriction, the 4th restriction are all provided with as a further improvement of the utility model,
In on valve pocket, the third restriction is set on spool, is equipped between the spool outer wall and valve sleeving inner wall and is connected to chamber, valve
The first cavity passes through first segment head piece, connection chamber, the second restriction, cavity, accommodating cavity, the 4th throttling when core is in first position
Mouth is connected with the second cavity.
The assist rate is power-assisted chamber sectional area and compression bar chamber sectional area as a further improvement of the utility model,
Ratio, the spool are equipped with the promotion hole for being connected to power-assisted chamber Yu compression bar chamber.
The valve pocket is equipped with installation cavity, institute in one end close to third cavity as a further improvement of the utility model,
Repairing check valve is equipped in the installation cavity stated.
Second cavity is connected with installation cavity, and the repairing check valve is for receiving second in spool return
Chamber pressure oil is simultaneously input to third cavity.
Second cavity is connected with installation cavity, is additionally provided with and is in the second position, the third place oil return in spool
Logical valve or overflow valve.
The utility model has the beneficial effects that having included unloading function, special unloading electromagnetic valve off-load is not needed, is subtracted
Few small product size, reduces cost；Power assisted control is realized by assist rate, control is accurate reliable, and product movement is quick；Spool and
Valve pocket is relation of following up, and by adjusting spool position, valve pocket follows adjustment automatically, can constantly adjust third chamber pressure.This
The advantages that utility model also has structure simple, easy to assembly, rapid operation, reliable in action, long service life.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model embodiment one.
Attached drawing 2 is the structural schematic diagram of the utility model embodiment two.
Attached drawing 3 is hydraulic schematic diagram when the utility model embodiment one, two works.
Attached drawing 4 is hydraulic schematic diagram when logical valve work is arranged in the utility model embodiment.
In figure, 1, valve body；11, the first cavity；12, the second cavity；13, third cavity；2, spool；21, cavity；22, it pushes away
Dynamic hole；3, valve pocket；31, accommodating cavity；32, it is connected to chamber；33, installation cavity；41, first segment head piece；42, the second restriction；43, third
Restriction；44, the 4th restriction；5, the first elastic component；6, the second elastic component；7, repairing check valve；8, logical valve；P1, oil inlet
Mouthful；T1, oil return opening；K, control mouth；A1, power-assisted chamber sectional area；A2, compression bar chamber sectional area.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
As shown in Fig. 1 combination Fig. 2-3, a kind of clutch power-assisted valve, including valve body 1, the valve body 1 is interior to be equipped with power-assisted group
Part and orifice union, the power-assisted component include spool 2 and valve pocket 3, and the orifice union includes first segment head piece 41,
Two restrictions 42, third restriction 43, the 4th restriction 44, the valve pocket is interior to be equipped with the accommodating cavity 31 being inserted into for spool, institute
The spool stated is equipped with cavity 21, and the intracorporal space of valve is divided into the first cavity 11, the second cavity 12 and the by the valve pocket
Three cavitys 13, the valve body are equipped with oil inlet P 1, oil return inlet T 1 and the control mouth K for being connected with clutch oil cylinder,
First cavity is connected with oil inlet, and second cavity is connected with oil return opening, the third cavity and control
Donsole is connected, and the spool has make the first cavity be connected by orifice union with the second cavity when installation first
Position is slid in valve pocket by footboard drives and is closed the second position of first segment head piece and the 4th restriction, by foot pedal
The third place that driving sliding opens third restriction and drives valve pocket to move synchronously by the pressure oil at oil inlet, it is described
The pressure oil of oil inlet by third restriction, the cavity on spool and drives valve by assist rate when spool is in the third place
Core, valve pocket move synchronously compression third cavity.The utility model has the beneficial effects that having included unloading function, do not need specially
The unloading electromagnetic valve off-load of door reduces small product size, reduces cost；Power assisted control is realized by assist rate, control accurately may be used
It leans on, product movement is quick；Spool and valve pocket are relation of following up, and by adjusting spool position, valve pocket follows adjustment automatically, can with when
When adjust third chamber pressure.The utility model also has structure simple, easy to assembly, rapid operation, and reliable in action uses the longevity
Order the advantages that long.
By taking embodiment one as an example, in conjunction with attached drawing 1 and 3, the specific course of work are as follows:
1, when clutch does not work, referring to attached drawing 1.Hydraulic oil first passes through first on valve pocket since oil inlet P 1
It throttles at restriction, is then flow to by the connection chamber 32 between valve pocket and spool using the second restriction on sequence valve pocket
Second cavity eventually passes back to oil return inlet T 1, although the second cavity is connected by the 4th restriction with the accommodating cavity of valve pocket at this time,
Second cavity at installation cavity and repairing check valve by being connected, but since the second cavity at this time is directly connected with oil return inlet T 1
Oil return, therefore oil pressure can direct oil return box.
2, it when stepping on the foot pedal of clutch booster valve, is not provided in figure, as long as the spring force for overcoming the first elastic component
Can spool be moved right, the first elastic component is slinky spring, and valve pocket is also in stationary state at this time.First segment head piece and
Restriction is gradually reduced everywhere, until completely closing, oil inlet P 1 sets up the pressure of the setting of logical valve 8 at this time.When spool after
It is continuous that third restriction is opened, and 1 pressure oil of oil inlet P enters valve core inside by third restriction when moving right, eventually by
Hole is pushed on spool, at this time under the action of assist rate is A1/A2, so that valve pocket moves right, compresses volume at third cavity,
So that control mouth K pressure gradually increases.When spool is moved to the bottom end of valve pocket, third restriction keeps standard-sized sheet at this time, at this time
It is maximum boost pressure at third cavity.Certainly, in real work engineering, if it is desired to continue so that valve pocket moves right,
It needs to push movable valve plug, valve pocket movement with king-sized, this section of distance does not have power-assisted at this time.
3, it when unclamping the foot pedal of clutch booster, not being provided in figure, spool is moved to the left under the action of slinky spring,
So that the 4th restriction is opened, the high pressure oil in spool lays down a part by the 4th restriction, so that the valve pocket left side (ginseng
See Fig. 1) active force decline, in the second elastic component (the second elastic component be hard spring) spring force and third cavity chamber pressure
Effect is lower to push valve pocket to be moved to the left, until pressure is laid down completely at third cavity.
In conjunction with attached drawing 2 and 3, control of the embodiment two in specific work process is the same as example 1, and is working as clutch
When not working, hydraulic oil first passes through the first segment head piece on valve pocket since oil inlet P 1, then by the second section in spool
Head piece eventually passes back to oil return opening using the 4th restriction channel in valve pocket.
It is equipped with the first elastic component 5 in the valve pocket, the second elastic component for valve pocket return is equipped in the valve body
6, the both ends of first elastic component offset with valve sleeving inner wall and spool respectively, the both ends of second elastic component respectively with
Valve pocket outer wall and valve body offset, the elastic force of the elastic force of first elastic component less than the second elastic component.First elastic component
With the movement tendency for making valve core reset after release foot pedal, accommodating cavity passes through the 4th throttling during the valve core reset
Mouth is connected with the second cavity, oil return opening.The utility model guarantees that spool, valve pocket return are flat by different elastic components
It is steady reliable, while making the control of product simple, rapid operation.
Embodiment one, referring to Fig. 1,3, the first segment head piece, the second restriction, third restriction, the 4th restriction
It is set on valve pocket, the first segment head piece, third restriction are connected with the first cavity, second restriction,
4th restriction is connected with the second cavity.Specifically, it is equipped between the spool outer wall and valve sleeving inner wall and is connected to chamber
32, the first cavity is connected by first segment head piece, connection chamber, the second restriction with the second cavity when spool is in first position
It is logical.Embodiment two, referring to Fig. 2,3, the first segment head piece, the second restriction, the 4th restriction are set on valve pocket, described
Third restriction be set on spool, be equipped between the spool outer wall and valve sleeving inner wall and be connected to chamber 32, spool is in first
The first cavity passes through first segment head piece, connection chamber, the second restriction, cavity, accommodating cavity, the 4th restriction and the second chamber when position
Body is connected.The control during the work time of embodiment one and embodiment two and principle are identical, and when not working off-load, oil circuit is not
Together.Make product fast and reliable off-load when not working in this way, do not need that other unloading valve is separately provided, reduce small product size,
Reduce cost.
The assist rate is the ratio of power-assisted chamber sectional area A1 and compression bar chamber sectional area A2, and the spool, which is equipped with, to be used
In the promotion hole of connection power-assisted chamber and compression bar chamber.Power assisted control is realized by assist rate, control is accurate reliable, and product movement is fast
Speed, and it is laborsaving.
The valve pocket is equipped with installation cavity 33 in one end close to third cavity, is equipped with repairing check valve in the installation cavity
7.Second cavity is connected with installation cavity, and the repairing check valve is for receiving the second cavity pressure in spool return
Power oil is simultaneously input to third cavity.The setting of repairing check valve can carry out repairing to third cavity in oil return, so that
It is steady when oil return.
Referring to Fig. 3 and Fig. 4, the utility model, which is additionally provided with, is in the logical valve 8 of the second position, the third place oil return in spool
Or overflow valve.The setting of logical valve can carry out off-load, so that product safety performance is high, the logical valve of Fig. 3, which is set to, to be helped
The corresponding principle of structure in (i.e. attached drawing 1,2) outside power valve, that is, is separately provided, Fig. 4 is that logical valve is set to the utility model to help
On the valve body of power valve, Fig. 1, do not provide in 2.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
Every technical staff's notice: although the utility model is described according to above-mentioned specific embodiment, this
The utility model thought of utility model is not limited to that utility model, and any repacking with the utility model thought all will
It is included in this patent scope of patent protection.
Claims (10)
1. a kind of clutch power-assisted valve, including valve body, it is characterised in that: be equipped with power-assisted component and throttling group in the valve body
Part, the power-assisted component include spool and valve pocket, and the orifice union includes first segment head piece, the second restriction, third
Restriction, the 4th restriction, the valve pocket is interior to be equipped with the accommodating cavity being inserted into for spool, and the spool is equipped with cavity, institute
The intracorporal space of valve is divided into the first cavity, the second cavity and third cavity by the valve pocket stated, and the valve body is equipped with oil inlet
Mouth, oil return opening and the control mouth for being connected with clutch oil cylinder, first cavity is connected with oil inlet, described
Second cavity is connected with oil return opening, and the third cavity is connected with control mouth, and the spool makes when having installation
The first position that first cavity is connected by orifice union with the second cavity is slid and is closed in valve pocket by footboard drives
The second position of first segment head piece and the 4th restriction is slid by footboard drives and opens third restriction and pass through oil inlet
Pressure oil drive the third place that moves synchronously of valve pocket, the pressure oil process of oil inlet when the spool be in the third place
Cavity on third restriction, spool simultaneously moves synchronously compression third cavity by assist rate band movable valve plug, valve pocket.
2. a kind of clutch power-assisted valve according to claim 1, it is characterised in that be equipped with the first elasticity in the valve pocket
Part, is equipped with the second elastic component for valve pocket return in the valve body, the both ends of first elastic component respectively with valve pocket
Inner wall and spool offset, and the both ends of second elastic component offset with valve pocket outer wall and valve body respectively, first elastic component
Elastic force less than the second elastic component elastic force.
3. a kind of clutch power-assisted valve according to claim 2, it is characterised in that first elastic component, which has, to be unclamped
Make the movement tendency of valve core reset after foot pedal, accommodating cavity passes through the 4th restriction and second during the valve core reset
Cavity, oil return opening are connected.
4. a kind of clutch power-assisted valve according to claim 1, it is characterised in that the first segment head piece, the second throttling
Mouth, third restriction, the 4th restriction are set on valve pocket, the first segment head piece, third restriction with the first cavity
It is connected, second restriction, the 4th restriction are connected with the second cavity.
5. a kind of clutch power-assisted valve according to claim 4, it is characterised in that the spool outer wall and valve sleeving inner wall
Between be equipped with connection chamber, when spool be in first position the first cavity by first segment head piece, be connected to chamber, the second restriction and the
Two cavitys are connected.
6. a kind of clutch power-assisted valve according to claim 1, it is characterised in that the first segment head piece, the second throttling
Mouth, the 4th restriction are set on valve pocket, and the third restriction is set on spool, the spool outer wall and valve sleeving inner wall
Between be equipped with connection chamber, when spool be in first position the first cavity by first segment head piece, be connected to chamber, the second restriction, sky
Chamber, accommodating cavity, the 4th restriction are connected with the second cavity.
7. a kind of clutch power-assisted valve according to claim 1, it is characterised in that the assist rate is power-assisted chamber section
The long-pending ratio with compression bar chamber sectional area, the spool are equipped with the promotion hole for being connected to power-assisted chamber Yu compression bar chamber.
8. a kind of clutch power-assisted valve according to claim 1, it is characterised in that the valve pocket is close to third cavity
One end is equipped with installation cavity, is equipped with repairing check valve in the installation cavity.
9. a kind of clutch power-assisted valve according to claim 8, it is characterised in that second cavity and installation cavity phase
Connection, the repairing check valve is for receiving the second chamber pressure oil in spool return and being input to third cavity.
10. a kind of clutch power-assisted valve according to claim 1, it is characterised in that be additionally provided with and be in second in spool
It sets, the logical valve or overflow valve of the third place oil return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820978204.6U CN208348572U (en) | 2018-06-25 | 2018-06-25 | A kind of clutch power-assisted valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820978204.6U CN208348572U (en) | 2018-06-25 | 2018-06-25 | A kind of clutch power-assisted valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348572U true CN208348572U (en) | 2019-01-08 |
Family
ID=64881830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820978204.6U Active CN208348572U (en) | 2018-06-25 | 2018-06-25 | A kind of clutch power-assisted valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208348572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533793A (en) * | 2018-06-25 | 2018-09-14 | 圣邦集团有限公司 | A kind of clutch power-assisted valve |
-
2018
- 2018-06-25 CN CN201820978204.6U patent/CN208348572U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533793A (en) * | 2018-06-25 | 2018-09-14 | 圣邦集团有限公司 | A kind of clutch power-assisted valve |
| CN108533793B (en) * | 2018-06-25 | 2024-04-19 | 圣邦集团有限公司 | Clutch booster valve |
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