CN106246761B - A kind of two changements for steering cluth - Google Patents
A kind of two changements for steering cluth Download PDFInfo
- Publication number
- CN106246761B CN106246761B CN201610799595.0A CN201610799595A CN106246761B CN 106246761 B CN106246761 B CN 106246761B CN 201610799595 A CN201610799595 A CN 201610799595A CN 106246761 B CN106246761 B CN 106246761B
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- Prior art keywords
- spool
- hydraulic
- valve
- fluid port
- steering cluth
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Classifications
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0221—Valves for clutch control systems; Details thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The present invention relates to hydraulic power technical field, especially a kind of two changements for steering cluth, including valve body and the gland for being sealed in valve body both ends, the valve body is interior to be equipped with two groups of control valves.Two changements for steering cluth of the present invention are after complete machine startup, hydraulic system is to left clutch and right clutch fuel feeding, left clutch and right clutch is allowed to keep linkage, it is required according to the steering of steering cluth, left beam hanger excessively or right cross in beam hanger are pumped into guide's hydraulic oil, spool opposite valve seat moves, to which the confession for obtaining steering cluth fluid is disconnected, during the motion, the The hydraulic oil needed is few, it is swift in motion, accurate positioning, reliability is high, service life is long, make the arrangement more freedom and flexibility of the steering tiller of bull-dozer, for the hydraulic pressure of steering cluth, it is electro-hydraulic and automatically control a kind of effective technical solution is provided.
Description
Technical field
The present invention relates to Hydraulic Machinery technical fields, are suitable for engineering machinery, building machinery, agriculture and forestry machinery and vehicle
Deng the steering with steering cluth, the steering especially suitable for bull-dozer steering cluth.
Background technology
The commutation executing agency of existing bull-dozer steering cluth is generally rigid link mechanism, such steering mechanism
Transmission " node " is more, and the operating space of steering tiller is larger, and articulation mechanism is more, to cause equipment adjustment difficulty big, transmission effect
Rate is relatively low, and for handling maneuver compared with " weight ", frequent turn in operation easily causes the nervous and tired of operator.The operation work of bull-dozer
Condition is severe, and the wear extent of link mechanism oscillating bearing is big, when adjustment not in time or safeguard it is not in place when, happen occasionally steering less than
The failures such as the rapid decline of the service life of steering cluth or damage, the positioning of existing steering cluth steering are caused in position
Mechanism according to maneuverability pattern difference, can be divided into link mechanism, hydraulic pressure with it is automatically controlled etc., these three maneuverability patterns generally cannot be simple
It integrates on ground.
Invention content
The purpose of the present invention is overcoming defect of the existing technology, a kind of two commutations for steering cluth are provided
Mechanism allows the steering situation of steering cluth to use electronics, hydraulic control mode completely, be steering cluth hydraulic pressure,
It is electro-hydraulic and automatically control a kind of effective technical solution is provided.
In order to achieve the object of the present invention, used technical solution is：
Two changements for steering cluth of the present invention include valve body and are sealed in the gland at valve body both ends, institute
It states and is equipped with two groups of control valves in valve body, the control valve includes valve seat and spool, and oil inlet, hydraulic control are equipped with successively on the valve seat
Hydraulic fluid port and oil outlet, the oil inlet send hydraulic fluid port to be connected to hydraulic system, and the oil return opening of the oil outlet and hydraulic system connects
Logical, the hydraulic control hydraulic fluid port is for controlling steering cluth division, and be slidably installed the spool in the cavity of the valve seat, the valve
The outer circumference surface of core is equipped with the first connectivity slot and the second connectivity slot, and first connectivity slot is for being connected to the oil inlet and liquid
Oil-control mouth, second connectivity slot are turned for being connected to the hydraulic control hydraulic fluid port and oil outlet, the spool by pressure oil drive control
It is disconnected to the confession of clutch fluid.
One end of valve seat of the present invention is fixed on the gland, and the other end of the valve seat was equipped with beam hanger, institute
The excessively oily channel for stating beam hanger is connected to the cavity of the valve seat, when the pressure for crossing the pressure oil in beam hanger is more than the liquid
When sending hydraulic fluid port pressure of pressure system, the spool is under differential pressure action towards oil inlet movement up to the spool top to pressure
It covers, first connectivity slot is connected to the oil inlet and hydraulic control hydraulic fluid port at this time, when the pressure for crossing the pressure oil in beam hanger
Less than the hydraulic system when sending hydraulic fluid port pressure, the spool is under differential pressure action towards oil outlet movement until described
Spool top is crossed to described on the end face of beam hanger, and second connectivity slot is connected to the hydraulic control hydraulic fluid port and oil outlet at this time.
Spool of the present invention is equipped with the first spring far from described one end for crossing beam hanger, and the spool is in first spring
Under the action of be resisted against it is described cross beam hanger end.
Valve seat of the present invention includes the fixed seat being fixedly connected with gland and the sliding seat that coordinates with valve body slides, described
Spool is slidably mounted on close to one end of gland in the fixed seat, the other end of the spool be located in the sliding seat and
It is fixedly connected with the sliding seat, the oil inlet and hydraulic control hydraulic fluid port are arranged in the fixed seat, and the oil outlet setting exists
On the sliding seat, first connectivity slot is located in the fixed seat, and second connectivity slot is located in the sliding seat.
Second spring is equipped in second connectivity slot of the present invention, one end of the second spring is resisted against the sliding seat
On, the other end of the second spring is resisted against on the trough rim of second connectivity slot.
Control valve is respectively left control valve and right control valve described in two groups of the present invention, and the steering cluth includes and left control
The left clutch of valve connection processed and the right clutch being connect with right control valve.
The advantageous effect of two changements for steering cluth of the present invention is：The present invention's is used to turn to clutch
For two changements of device after complete machine startup, hydraulic system allows left clutch and the right side to left clutch and right clutch fuel feeding
Clutch keep linkage, according to the steering of steering cluth require, it is left cross beam hanger or it is right cross beam hanger in be pumped into guide's hydraulic oil, valve
Core opposite valve seat moves, and to which the confession for obtaining steering cluth fluid is disconnected, during the motion, the The hydraulic oil needed is few, moves
Make rapid, accurate positioning, reliability height, service life is long, makes the arrangement more freedom and flexibility of the steering tiller of bull-dozer, to turn
To a kind of hydraulic pressure, electro-hydraulic and automatically control and provide effective technical solution of clutch.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is two changement structural schematic diagrams for steering cluth in the embodiment of the present invention one；
Fig. 2 is two changement structural schematic diagrams for steering cluth in the embodiment of the present invention two；
Fig. 3 is two changement structural schematic diagrams for steering cluth in the embodiment of the present invention three.
Wherein：Valve body 1；Gland 2；Left valve seat 31, left spool 32 are left to cross beam hanger 33；Valve seat 41, right spool 42 are right excessively oily
Bar 43；First spring 5；Fixed seat 61, sliding seat 62；Second spring 7.
Specific implementation mode
In the description of the present invention, it is to be understood that, term " radial direction ", " axial direction ", "upper", "lower", "top", "bottom",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, do not indicate or imply the indicated device or element must have a particular orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In the description of the present invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment one：
As shown in Figure 1, two changements for steering cluth of the present embodiment include valve body 1 and are sealed in valve body
The gland 2 at 1 both ends is equipped with two groups of control valves in valve body 1, and control valve includes valve seat and spool, be equipped with successively on valve seat oil inlet,
Hydraulic control hydraulic fluid port and oil outlet, oil inlet send hydraulic fluid port to be connected to hydraulic system, and oil outlet is connected to the oil return opening of hydraulic system, liquid
Oil-control mouth is for controlling steering cluth division, and be slidably installed spool in the cavity of valve seat, and the outer circumference surface of spool is equipped with the
One connectivity slot and the second connectivity slot, the first connectivity slot is for being connected to oil inlet and hydraulic control hydraulic fluid port, and the second connectivity slot is for being connected to liquid
Oil-control mouth and oil outlet, spool are broken by the confession of pressure oil drive control steering cluth fluid.
Spool in the present embodiment is by crossing guide's hydraulic oil driving in beam hanger, and specifically, one end of valve seat is fixed on
On gland 2, the other end of valve seat was equipped with beam hanger, and the excessively oily channel for crossing beam hanger is connected to the cavity of valve seat, has been served as in beam hanger
The pressure of pressure oil be more than when sending hydraulic fluid port pressure of hydraulic system, spool is under differential pressure action towards oil inlet movement until valve
On core top to gland 2, the first connectivity slot connection oil inlet and hydraulic control hydraulic fluid port, the pressure for having served as the pressure oil in beam hanger are less than at this time
When sending hydraulic fluid port pressure of hydraulic system, spool is under differential pressure action towards oil outlet movement until the end face of beam hanger was arrived on spool top
On, the second connectivity slot is connected to hydraulic control hydraulic fluid port and oil outlet at this time.
Two groups of control valves in the present embodiment are respectively left control valve and right control valve, and steering cluth includes and left control
The left clutch of valve connection and the right clutch being connect with right control valve, left control valve and right control valve are by pressure oil drive control
The division of left clutch and right clutch turns to realize.Wherein, left control valve is correspondingly arranged on left valve seat 31, left spool
32 and it is left cross beam hanger 33, right control valve be correspondingly arranged on right valve seat 41, right spool 42 and it is right cross beam hanger 43.
As shown in Figure 1, the specific control mode of above-mentioned two changements for steering cluth is as follows：
Wherein, CL be the oiler of left clutch, CR be right clutch oiler, PCL and PCR be guide's fuel feeding, P is liquid
The pressure oil passage of pressure system, the drainback passage that T is hydraulic system, P, PCL and PCR are same system pressure, control crank
Position signal send hydraulic control system, hydraulic control system adjusts the guide hydraulic fluid port of hydraulic system by solenoid valve control
Oil mass and break-make.When straight-line travelling, guide's hydraulic fluid port of hydraulic system is closed, and left spool 32 and right spool 42 are in hydraulic system
Acted against under pressure oil effect it is left cross beam hanger 33 and it is right cross on beam hanger 43, the pressure oil port of hydraulic system respectively with left clutch
Oiler is connected to the holding of the oiler of right clutch, and the pressure oil in hydraulic system makes left clutch and right clutch press guarantor
Hold linkage status, two groups of Athey wheel group straight-line travellings；When left steering, guide's hydraulic fluid port corresponding with left beam hanger 33 excessively starts fuel feeding,
The left pressure oil for crossing beam hanger 33 pushes left spool 32 towards the movement of gland 2 until left spool 32 abuts on gland 2, at this time left valve
The oil inlet of seat 31 is cut off by left spool 32, while the oil outlet of left valve seat 31 connects with hydraulic control hydraulic fluid port by the second of left spool 32
Straight slot is connected to, and left clutch pressure release separation disconnects linkage, and left Athey wheel group stops walking, and right clutch normal fuel injection keeps connection
Dynamic, right-hand track chiain wheel group walks on, and realizes left steering；When right turn, guide's hydraulic fluid port corresponding with right beam hanger 43 excessively starts fuel feeding,
The right pressure oil for crossing beam hanger 43 pushes right spool 42 towards the movement of gland 2 until right spool 42 abuts against on gland 2, right valve seat 41
Oil inlet cut off by right spool 42, while the second connectivity slot that the oil outlet of right valve seat 41 and hydraulic control hydraulic fluid port pass through right spool 42
Connection, right clutch pressure release separation disconnect linkage, and right-hand track chiain wheel group stops walking, and left clutch normal fuel injection keeps linkage, left
Athey wheel group walks on, and realizes right turn.
The control mechanism of the bull-dozer steering cluth of the present embodiment is believed after complete machine startup according to the position of control crank
Number, it is left to cross beam hanger 33 or the right guide's hydraulic oil entrance crossed in beam hanger 43, spool opposite valve seat movement, to obtain left clutch
Confession with right clutch fluid is disconnected, and during the motion, the The hydraulic oil needed is few, is swift in motion, accurate positioning, reliability
Height, service life is long, makes the arrangement more freedom and flexibility of the steering tiller of bull-dozer.The present invention be steering cluth hydraulic pressure with
The integration of electrichydraulic control mode provides a kind of effective technical solution.
The control mechanism of the bull-dozer steering cluth of the present embodiment is of simple structure and low cost, easy manufacture, size are small,
It is convenient that use is connect with steering cluth.With rigid link mechanism compare, lubricate, wear small, steering force is small, positioning is correct,
Maintenance period is long and service life is long.
Embodiment two：
As shown in Fig. 2, the control mechanism of the bull-dozer steering cluth in the present embodiment is identical as embodiment one, difference exists
In：Spool is equipped with the first spring 5 far from the one end for crossing beam hanger, and spool was resisted against the end of beam hanger under the action of the first spring 5
Portion can obtain stable opening feature by spring.
Embodiment three：
As shown in figure 3, the control mechanism of the bull-dozer steering cluth in the present embodiment is identical as embodiment one, difference exists
In：Valve seat includes the fixed seat 61 being fixedly connected with gland 2 and the sliding seat 62 being slidably matched with valve body 1, and spool is close to gland 2
One end be slidably mounted in fixed seat 61, the other end of spool is located in sliding seat 62 and is fixedly connected with sliding seat 62,
Oil inlet and hydraulic control hydraulic fluid port are arranged in fixed seat 61, and oil outlet is arranged on sliding seat 62, and the first connectivity slot is located at fixed seat
In 61, the second connectivity slot is located in sliding seat 62.
Second spring 7 is equipped in second connectivity slot, one end of second spring 7 is resisted against on sliding seat 62, second spring 7
Other end is resisted against on the trough rim of the second connectivity slot, and stable opening feature can be obtained by spring.
It should be appreciated that specific embodiment described above is only used for explaining the present invention, it is not intended to limit the present invention.By
The obvious changes or variations that the spirit of the present invention is extended out are still in the protection scope of this invention.
Claims (5)
1. a kind of two changements for steering cluth, including valve body (1) and the gland for being sealed in valve body (1) both ends
(2), it is characterised in that：Two groups of control valves are equipped in the valve body (1), the control valve includes valve seat and spool, the valve seat
On be equipped with oil inlet, hydraulic control hydraulic fluid port and oil outlet successively, the oil inlet send hydraulic fluid port to be connected to hydraulic system, the oil outlet
It is connected to the oil return opening of hydraulic system, the hydraulic control hydraulic fluid port is slided for controlling steering cluth division in the cavity of the valve seat
The dynamic installation spool, the outer circumference surface of the spool are equipped with the first connectivity slot and the second connectivity slot, first connectivity slot
For being connected to the oil inlet and hydraulic control hydraulic fluid port, second connectivity slot is described for being connected to the hydraulic control hydraulic fluid port and oil outlet
Spool is broken by the confession of pressure oil drive control steering cluth fluid；
Wherein, one end of the valve seat is fixed on the gland (2), and the other end of the valve seat was equipped with beam hanger, described
The excessively oily channel for crossing beam hanger is connected to the cavity of the valve seat, when the pressure for crossing the pressure oil in beam hanger is more than the hydraulic pressure
When sending hydraulic fluid port pressure of system, the spool is under differential pressure action towards oil inlet movement up to the spool top to gland
(2) on, first connectivity slot is connected to the oil inlet and hydraulic control hydraulic fluid port at this time, when the pressure for crossing the pressure oil in beam hanger
Less than the hydraulic system when sending hydraulic fluid port pressure, the spool is under differential pressure action towards oil outlet movement until described
Spool top is crossed to described on the end face of beam hanger, and second connectivity slot is connected to the hydraulic control hydraulic fluid port and oil outlet at this time.
2. two changements according to claim 1 for steering cluth, it is characterised in that：The spool is separate
Described one end for crossing beam hanger is equipped with the first spring (5), and the spool is resisted against the mistake under the action of the first spring (5)
The end of beam hanger.
3. two changements according to claim 1 for steering cluth, it is characterised in that：The valve seat includes
The fixed seat (61) being fixedly connected with gland (2) and the sliding seat (62) being slidably matched with valve body (1), the spool is close to gland
(2) one end is slidably mounted in the fixed seat (61), the other end of the spool be located at the sliding seat (62) it is interior and
It is fixedly connected with the sliding seat (62), the oil inlet and hydraulic control hydraulic fluid port are arranged in the fixed seat (61), described fuel-displaced
Mouth is arranged on the sliding seat (62), and first connectivity slot is located in the fixed seat (61), second connectivity slot position
In the sliding seat (62).
4. two changements according to claim 3 for steering cluth, it is characterised in that：Second connection
Second spring (7) is equipped in slot, one end of the second spring (7) is resisted against on the sliding seat (62), the second spring
(7) other end is resisted against on the trough rim of second connectivity slot.
5. two changements according to claim 1 for steering cluth, it is characterised in that：It is controlled described in two groups
Valve is respectively left control valve and right control valve, the steering cluth include the left clutch being connect with left control valve and with right control
The right clutch of valve connection processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799595.0A CN106246761B (en) | 2016-08-31 | 2016-08-31 | A kind of two changements for steering cluth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610799595.0A CN106246761B (en) | 2016-08-31 | 2016-08-31 | A kind of two changements for steering cluth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246761A CN106246761A (en) | 2016-12-21 |
| CN106246761B true CN106246761B (en) | 2018-08-17 |
Family
ID=58080777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610799595.0A Active CN106246761B (en) | 2016-08-31 | 2016-08-31 | A kind of two changements for steering cluth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246761B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3646959A (en) * | 1970-10-12 | 1972-03-07 | Sperry Rand Corp | Power transmission |
| JPH07190012A (en) * | 1993-12-24 | 1995-07-28 | Komatsu Ltd | Pilot pressure control valve |
| CN202130443U (en) * | 2011-06-22 | 2012-02-01 | 山推工程机械股份有限公司 | Brake valve for bulldozer |
| US8997471B2 (en) * | 2012-11-30 | 2015-04-07 | Caterpillar Inc. | Hydraulic system having dual manifolds |
| CN203172616U (en) * | 2013-04-11 | 2013-09-04 | 大连兴龙液压有限公司 | Brake valve |
| CN203819222U (en) * | 2014-05-23 | 2014-09-10 | 山推工程机械股份有限公司 | Hydraulic control turn braking valve for bulldozer |
| CN104149849B (en) * | 2014-09-01 | 2017-02-15 | 山推工程机械股份有限公司 | Hydraulic steering brake system and hydraulic control steering brake valve |
| CN206175529U (en) * | 2016-08-31 | 2017-05-17 | 江西液压件股份有限公司 | A two reversing mechanism for steering clutch |
-
2016
- 2016-08-31 CN CN201610799595.0A patent/CN106246761B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106246761A (en) | 2016-12-21 |
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