CN106245707B - Travelling control foot pedal assembly - Google Patents
Travelling control foot pedal assembly Download PDFInfo
- Publication number
- CN106245707B CN106245707B CN201610796411.5A CN201610796411A CN106245707B CN 106245707 B CN106245707 B CN 106245707B CN 201610796411 A CN201610796411 A CN 201610796411A CN 106245707 B CN106245707 B CN 106245707B
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- Prior art keywords
- combination valve
- valve
- control
- combination
- pedal
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
- E02F9/2012—Setting the functions of the control levers, e.g. changing assigned functions among operations levers, setting functions dependent on the operator or seat orientation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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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
-
- 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
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
Abstract
Travelling control foot pedal assembly disclosed by the invention, including pedal mounting base, the pedal body being hinged in pedal mounting base, the resetting-mechanism that can reset the subtended angle between pedal body and pedal mounting base, and the travelling control combination valve of control advance and retreat speed, pedal body control travelling control combination valve corresponds to cut-out combination valve oil back chamber, connect combination valve splitter cavity, and the variation proportional to subtended angle of the flow of the hydraulic fluid of combination valve splitter cavity, and the proportional variation of flow of the hydraulic fluid to being connected to driving related organization through travelling control combination valve.The present invention is under the states such as driving acceleration and deceleration, operating personnel need to only step on combination valve control unit, and that accelerator open degree can be realized is bigger, hydraulic travel system fuel feeding is more, and speed is faster, while direction of travel control solenoid valves and power-off is controlled to realize vehicle forward and back and neutral position state；This more humane control mode adapts to driver, operating personnel drives to be accustomed to, and brings great convenience.
Description
Technical field
The present invention relates to a kind of pedal of the engineering trucks such as wheel excavator, more particularly to a kind of throttle and travelling control group
Close valve assembly.
Background technology
The engineering trucks such as current wheel excavator, under the driving states such as driving, parking, acceleration, deceleration, driver,
Operating personnel controls the size of throttle while need to operate accordingly in time, to adapt to the variation of driving states, also needs to make on one side
Gear shift, adjustment direction disk etc. are hung in corresponding operation, not only inconvenient, but also operability is also up for further improving.
In the case where road conditions are complicated, operating environment is severe, this just to driver, operating personnel bring it is very big not
Just or even safety in production is influenced.
Therefore, for this inconvenient of the engineering trucks such as wheel excavator, it is necessary to research and develop a kind of more humane behaviour
Control structure, operation again plus convenient, and adapts to driver, operating personnel drives to be accustomed to, and then improves the shapes such as driving, work
The comfort of state, security.
The content of the invention
In view of this, it is an object of the invention to provide a kind of travelling control foot pedal assembly, controlled with throttle and walking
System combination valve assembly combination valve assembly match, can by accelerator open degree, direction of traffic, the organic association of road speed three and
Operator runs vehicle custom jointly.
In order to achieve the above objectives, solution of the invention is：Throttle Opening Control including controlling engine throttle opening
Foot pedal assembly controls the travelling control combination valve of advance and retreat speed and control is advanced, the direction of travel of direction of retreat controls electricity
Magnet valve；Three configures as follows：When direction of travel control solenoid valve switch under the state of moving forward and backward, accelerator open degree with through walking
Control combination valve is connected to the proportional variation of flow of the hydraulic fluid of driving related organization.Throttle and travelling control combination valve are total
Include into the Throttle Opening Control foot pedal assembly：Pedal mounting base, the pedal body being hinged in the pedal mounting base and
Accelerator control device；
Throttle Opening Control includes that the resetting-mechanism that the subtended angle between the pedal body and the pedal mounting base resets can be made,
And the accelerator open degree control mechanism of control engine throttle variation proportional to subtended angle；And accelerator open degree control mechanism passes as follows
The dynamic connection travelling control combination valve：From large to small, travelling control combination valve corresponds to cut-out combination valve oil back chamber, connection to subtended angle
Combination valve splitter cavity, and the variation proportional to subtended angle of the flow of the hydraulic fluid of combination valve splitter cavity.
The resetting-mechanism includes pedal resetting spring or pedal reduction torsion spring, pedal resetting spring or pedal reduction torsion spring
It directly or indirectly withstands on the pedal mounting base and the pedal body；And/or
The accelerator open degree control mechanism includes mechanical accelerator open degree control mechanism, including the reversed pull rod group of throttle
Part, reversed rod assembly is directly or indirectly withstood on the pedal mounting base and the pedal body, and reversed rod assembly
Drive connection throttle related organization；And/or
The accelerator open degree control mechanism includes electronic type accelerator opening controlling mechanism, including control harness and variable resistance
Device, rheostat include winding, sliding contact end and slide exit；It slides exit and the pedal peace is contacted with energy roll mode
Seat is filled, and sliding exit can drive sliding contact end to be slided on the contact road of winding, winding can be electrically connected the control line
Beam, the control terminal of the control harness electrical connection throttle related organization.
The travelling control combination valve includes combination valve control unit, combination valve splitter cavity, combination valve oil suction chamber, combination valve and returns
Oil pocket, combination valve core and combination resetting spring；
Combination valve core includes the inside and outside inner spool for being correspondingly arranged and interlocking and outer spool, and it is inside and outside right that combination resetting spring includes
The interior resetting spring and outer resetting spring that should be arranged；
The accelerator open degree control mechanism drive connection combination valve control unit, corresponding compression and the outer resetting spring of release, into
And outer spool is made to correspond to cut-out and connect combination valve oil back chamber；Resetting spring in corresponding compression and release, and then pass through inner spool
Corresponding connection and cut-out combination valve splitter cavity；And the flow of the hydraulic fluid of combination valve splitter cavity and the impulse stroke of inner spool into
Direct ratio.
The travelling control combination valve includes the inside and outside inner valve body and outer valve being correspondingly arranged；It is from top to bottom set on inner spool
It is equipped with inner spool trip segment, inner spool convex platform, inner spool recess portion, inner spool lower convex platform；
The one end of the combination valve control unit stretches out in the combination valve core mouth on outer valve, and directly or indirectly withstands on
On the pedal body；
Described combination valve control unit the other end puts in the combination valve core intracavitary in outer valve, and is withstood on by tabletting described
On the upper free end of interior resetting spring and outer resetting spring；The lower free end top of the outer resetting spring is on the inner body, described
The lower free end of interior resetting spring is withstood on inner spool convex platform；
When inner spool moves to operating position, inner spool convex platform cut-out combination valve oil back chamber, the connection combination of inner spool recess portion
Valve splitter cavity；When inner spool moves to reset position, inner spool lower convex platform cut-out combination valve splitter cavity, the connection combination of inner spool recess portion
Valve oil back chamber.
It is provided on the combinaing valve body and connects the combination valve oil outlet chamber A of the combination valve splitter cavity and combination valve oil outlet chamber B,
Combination valve oil outlet chamber A connects driving related organization with combination valve oil outlet chamber B；Combination valve oil outlet chamber A and combination valve oil outlet chamber B difference
The direction of travel control solenoid valve of connection one；
The direction of travel control solenoid valve includes electromagnetic valve body, electromagnetic valve core, electromagnetism resetting spring and solenoid valve control
Portion,
When solenoid valve control portion control electromagnetic valve core is back and forth moved in operating position and reset position, corresponding connection and cut-out group
Close valve oil outlet chamber A or combination valve oil outlet chamber B.
The electromagnetic valve core includes electromagnetic valve core lower convex platform, electromagnetic valve core recess portion and electromagnetic valve core convex platform from the bottom to top；
The freely up and down end of the electromagnetism resetting spring respectively it is corresponding withstand on the electromagnetic valve body and under electromagnetic valve core it is convex
On platform；
When the electromagnetic valve core moves to operating position respectively, institute's electromagnetic valve core recess portion is respectively communicated with combination valve oil outlet chamber A
Or combination valve oil outlet chamber B；
When the electromagnetic valve core moves to reset position respectively, institute's electromagnetic valve core convex platform cuts off combination valve oil outlet chamber respectively
A or combination valve oil outlet chamber B.
After using the above program, the invention has the advantages that：The present invention is under the states such as driving acceleration and deceleration, operation
Personnel need to only step on combination valve control unit and can be realized that accelerator open degree is bigger, and hydraulic travel system fuel feeding is more, and speed is faster, simultaneously
Direction of travel control solenoid valves and power-off is controlled to realize vehicle forward and back and neutral position state；This more humane control mode
Adapt to driver, operating personnel drives to be accustomed to, bring great convenience；It is particularly adapted to complex road condition, severe operating environment
Under operation, also can further improve comfort, the security of the states such as driving, work.
Description of the drawings
Fig. 1 is the structural diagram of the present invention one.
Fig. 2 is the structure diagram two of the present invention.
Fig. 3 is the structure diagram three of the present invention.
Fig. 4 is the sectional view along A-A in this Fig. 2.
Fig. 5 is the combination valve core structure diagram of the present invention.
Fig. 6 is the B-B direction sectional view in this Fig. 3.
Fig. 7 is C-C in Fig. 3 to sectional view.
Fig. 8 is D-D in Fig. 3 to sectional view.
Fig. 9 is E-E in Fig. 4 to sectional view.
Figure 10 is F-F in Fig. 6 to sectional view.
The hydraulic schematic diagram of Figure 11 present invention.
In figure：
Pedal mounting base 100, pedal body 200, throttle and travelling control combination valve 300,
Accelerator control device 400, accelerator open degree control mechanism 420, control harness 421, rheostat 422, slip exit
423rd, idler wheel 424,
Travelling control combination valve 500,
Combinaing valve body, outer valve 510, inner valve body 511, inner valve body through hole 511a,
Combination valve oil suction chamber 510a, combination valve core cavity 510b, combination valve splitter cavity 510c, combination valve oil outlet chamber A, combination valve
Oil outlet chamber B, combination valve oil back chamber 510d,
Combination valve import P, combination valve core mouth, combination valve outlet A, combination valve outlet B, combination valve oil return inlet T,
Combination valve core 512, outer spool 5121, inner spool 5122, inner spool trip segment 5122a, inner spool convex platform
5122d, inner spool recess portion 5122c, inner spool lower convex platform 5122e,
Combine resetting spring 513, outer resetting spring 5131, interior resetting spring 5132,
Combination valve control unit 514, tabletting 5141,
Direction of travel control solenoid valve 600,
Electromagnetic valve body 610, solenoid valve import 611, electromagnetic valve outlet 612, electromagnetic valve oil return mouth 613,
Electromagnetic valve core 620, electromagnetic valve core lower convex platform 621, electromagnetic valve core recess portion 622, electromagnetic valve core boss 623, cylindrical section
623a, conical section 623b, electromagnetism resetting spring 624.
Specific embodiment
In order to further explain the technical solution of the present invention, the present invention is explained in detail below by specific embodiment
It states.
Embodiment one
As shown in Figure 1 to 11, in the present embodiment, throttle and travelling control combination valve assembly mainly include pedal mounting base
100th, pedal body 200, throttle and travelling control combination valve 300.
Throttle and travelling control combination valve 300 mainly include accelerator control device 400, travelling control combination valve 500, walking
Direction controlling solenoid valve 600.
Accelerator control device 400 mainly includes resetting-mechanism, accelerator open degree control mechanism 420.
Travelling control combination valve 500 mainly includes outer valve 510, combination valve core 512, combination resetting spring 513 and combination
Valve control unit 514.
Direction of travel control solenoid valve 600 mainly includes electromagnetic valve body 610, electromagnetic valve core 620, electromagnetism resetting spring 624
With solenoid valve control portion.
It is preferred that throttle and travelling control combination valve assembly mainly include the Throttle Opening Control foot of control engine throttle opening
Pedal assembly controls the travelling control combination valve of advance and retreat speed and control is advanced, the direction of travel of direction of retreat controls electromagnetism
Valve；Three configures as follows：When direction of travel control solenoid valve is switched under the state of moving forward and backward, accelerator open degree through walking with controlling
Combination valve processed is connected to the proportional variation of flow of the hydraulic fluid of driving related organization.Here ratio can be direct proportion,
Can also be inverse proportion, mainly depending on the setting of accelerator open degree control mechanism 420, when automatically controlled or mechanism controls mechanism
When controlling variable quantity increase, accelerator open degree also becomes therewith, is direct proportion variation.Conversely, when automatically controlled or mechanism controls mechanism
Control variable quantity increase when, accelerator open degree but becomes smaller therewith, i.e., inverse proportion variation.
Throttle Opening Control foot pedal assembly includes：Pedal mounting base 100, the pedal body 200 being hinged in pedal mounting base,
And accelerator control device 400；
Accelerator control device 400 includes that the reset machine that the subtended angle between pedal body 200 and pedal mounting base resets can be made
Structure and the accelerator open degree control mechanism of control engine throttle variation directly proportional to subtended angle；And accelerator open degree control mechanism is such as
Underdrive connects travelling control combination valve：From large to small, travelling control combination valve corresponds to cut-out combination valve oil back chamber, connection to subtended angle
Combination valve splitter cavity, and the variation directly proportional to subtended angle of the flow of the hydraulic fluid of combination valve splitter cavity.It certainly also can be inversely proportional
Variation is primarily to see the set-up mode of the subtended angle variation between pedal body 200 and pedal mounting base.
Resetting-mechanism includes pedal resetting spring or pedal reduction torsion spring, and pedal resetting spring or pedal reduction torsion spring are direct
Or it withstands on indirectly on pedal mounting base and pedal body；And/or
Accelerator open degree control mechanism includes mechanical accelerator open degree control mechanism, including the reversed rod assembly of throttle, instead
It is directly or indirectly withstood on pedal mounting base and pedal body to rod assembly, and reversely rod assembly drive connection throttle closes
Online structure；And/or
Accelerator open degree control mechanism includes electronic type accelerator opening controlling mechanism, including control harness and rheostat, becomes
Hindering device includes winding, sliding contact end and slides exit；Exit is slided with energy roll mode contact pedal mounting base, and is slided
Dynamic exit can drive sliding contact end to be slided on the contact road of winding, and winding can be electrically connected control harness, control harness electricity
Connect the control terminal of throttle related organization.
Travelling control combination valve includes combination valve control unit 514, combination valve splitter cavity, combination valve oil suction chamber, combination valve and returns
Oil pocket, combination valve core 512 and combination resetting spring 513；
Combination valve core 512 includes the inside and outside inner spool 5122 for being correspondingly arranged and interlocking and outer spool 5121, and combination resets bullet
Spring 513 includes interior resetting spring 5132 and the outer resetting spring 5131 that inside and outside correspondence is arranged；
Accelerator open degree control mechanism drive connection combination valve control unit 514, corresponding compression and the outer resetting spring 5131 of release,
And then outer spool 5121 is made to correspond to cut-out and connect combination valve oil back chamber；Resetting spring 5132 in corresponding compression and release, and then
Connection and cut-out combination valve splitter cavity are corresponded to by inner spool 5122；And the flow and internal valve of the hydraulic fluid of combination valve splitter cavity
The impulse stroke of core 5122 is directly proportional.
Travelling control combination valve includes the inside and outside inner valve body and outer valve being correspondingly arranged；It is from top to bottom set on inner spool 5122
It is equipped with 5122 trip segment of inner spool, 5122 convex platform of inner spool, 5122 recess portion of inner spool, 5122 lower convex platform of inner spool；
The one end of combination valve control unit 514 stretches out in 512 mouthfuls of combination valve core on outer valve, and directly or indirectly withstands on and step on
On plate body；
514 the other end of combination valve control unit puts in 512 intracavitary of combination valve core in outer valve, and is pushed up by tabletting 5141
On the upper free end of interior resetting spring 5132 and outer resetting spring 5131；The lower free end of outer resetting spring 5131 withstands on internal valve
On body, the lower free end of interior resetting spring 5132 is withstood on 5122 convex platform of inner spool；
When inner spool 5122 moves to operating position, 5122 convex platform of inner spool cut-out combination valve oil back chamber, inner spool 5122
Recess portion connects combination valve splitter cavity；When inner spool 5122 moves to reset position, the cut-out combination valve shunting of 5122 lower convex platform of inner spool
Chamber, 5122 recess portion of inner spool connection combination valve oil back chamber.
The combination valve oil outlet chamber A and combination valve oil outlet chamber B, combination valve that connection combination valve splitter cavity is provided on combinaing valve body go out
Oil pocket A connects driving related organization with combination valve oil outlet chamber B；Combination valve oil outlet chamber A and combination valve oil outlet chamber B are respectively communicated with one
Direction of travel controls solenoid valve 600；
Direction of travel control solenoid valve 600 includes electromagnetic valve body 610, electromagnetic valve core 620, electromagnetism resetting spring and solenoid valve
Control unit,
It is corresponding to connect and cut when solenoid valve control portion control electromagnetic valve core 620 is back and forth moved in operating position and reset position
Disconnected combination valve oil outlet chamber A or combination valve oil outlet chamber B.
Electromagnetic valve core 620 includes 620 lower convex platform of electromagnetic valve core, 620 recess portion of electromagnetic valve core and electromagnetic valve core 620 from the bottom to top
Convex platform；
The freely up and down end of electromagnetism resetting spring is corresponding respectively to be withstood on electromagnetic valve body 610 and 620 lower convex platform of electromagnetic valve core
On；
When electromagnetic valve core 620 moves to operating position respectively, 620 recess portion of institute's electromagnetic valve core is respectively communicated with combination valve oil outlet chamber
A or combination valve oil outlet chamber B；
When electromagnetic valve core 620 moves to reset position respectively, it is fuel-displaced that 620 convex platform of institute's electromagnetic valve core cuts off combination valve respectively
Chamber A or combination valve oil outlet chamber B.
Said mechanism is described in detail respectively by way of examples below.
Throttle Opening Control foot pedal assembly embodiment one
As shown in Figure 1 to Figure 3, in the present invention, Throttle Opening Control foot pedal assembly mainly includes pedal mounting base 100, pedal
Body 200 and accelerator control device 400.Throttle Opening Control mainly includes resetting-mechanism, accelerator open degree control mechanism 420.
Existing structure can be used in pedal mounting base 100.
Pedal body 200 is hinged on by structures such as hinge shafts in pedal mounting base 100.
Resetting-mechanism can make subtended angle between pedal body 200 and pedal mounting base 100 from large to small.Resetting-mechanism is main
Including pedal resetting spring or pedal reduction torsion spring, two effect ends of pedal resetting spring or pedal reduction torsion spring are directly withstood on
In pedal mounting base 100 and pedal body 200.Two effect ends of pedal resetting spring or pedal reduction torsion spring can also by
Ground connection is withstood in pedal mounting base 100 and pedal body 200.
Accelerator open degree control mechanism 420 can control engine throttle to change from small to big.Accelerator open degree control mechanism 420 mainly wraps
Control harness 421 and rheostat 422 are included, rheostat 422 includes winding, sliding contact end and slides exit.Slide exit
With energy roll mode contact pedal mounting base 100, and sliding exit can drive sliding contact end sliding on the contact road of winding
Dynamic, winding can be electrically connected control harness 421.
It is preferred that slide on exit with can rotation mode be equipped with idler wheel 423, and idler wheel 423 and pedal mounting base 100 it
Between be slidably connected.Specific as follows, rheostat 422 uses slide wire resistor, and slide wire resistance is arranged at pedal mounting base 100 and pedal
Between body 200.Slide wire resistor includes winding, sliding contact end and slides exit.Slide exit by idler wheel 423 with
Pedal mounting base 100 is slidably connected, and sliding exit can drive sliding contact end to be slided on the contact road of winding, winding energy
Electrical connection control harness 421.
Certainly, except the above-mentioned electric-controlled type accelerator control device 400 of use, mechanical accelerator control device 400 also can be used,
For example with reversed Tiebar structure.That that's about the size of it is described for specific manipulating principle.
Throttle Opening Control foot pedal assembly embodiment two
In the present embodiment, 100 lower section of pedal mounting base is additionally provided with travelling control combination valve 500, travelling control combination valve 500
The main combination valve control unit 514 for including outer valve 510 and being arranged at keying on outer valve 510.Combination valve control 514
The directly or indirectly drive connection pedal body 200 of the end outside outer valve is stretched out in portion.
It is preferred that combination valve control unit stretches out the end sleeve rubber sleeve or rubber cap of outer valve, in this way, with buffering pedal
Impact is trampled between bottom and combination valve control unit.
In the present embodiment, either driving advances or under fallback state of driving a vehicle, and steps on pedal with regard to that throttle can be controlled to open
Degree, and accelerator open degree is directly proportional to the flow of the hydraulic fluid in travelling control combination valve 500, specifically in rear embodiment in detail
It states.
Throttle Opening Control foot pedal assembly embodiment three
The present embodiment is used for wheel excavator, and Throttle Opening Control foot pedal assembly is matched with travelling control combination valve 500,
Pedal mounting base 100 and pedal body 200 are arranged on the top of travelling control combination valve, and pedal body 200 can be controlled with walking
The combination valve control unit of combination valve processed interlocks.It is stretched for example, pedal body 200 can directly or indirectly withstand on combination valve control unit
Go out the end outside outer valve.
When advance accelerates, the pedal body 200 for control foot pedal assembly of stepping on the gas downwards.Pedal body 200 is pacified with pedal
Subtended angle between dress seat 100 becomes smaller, and the accelerator open degree control mechanism 420 of Throttle Opening Control foot pedal assembly is just corresponding to control engine
Throttle changes from small to big, and existing structure can be used in mechanical throttle, E-Gas control and the operation principle of engine, no longer superfluous herein
It states.Specifically, idler wheel 423 slides backward, and the exit that slides of rheostat 422 is made to drive contact of the sliding contact end in winding
It is slided on road, changes the size of resistance value.Since variable resistive value changes, correspondingly variable signal by control harness 421 into
And the throttle of engine is controlled to become larger.When accelerator open degree increases, the inlet flow rate of hydraulic motor synchronously increases, and speed is faster.
Conversely, when advance is slowed down, only pedal body 200 need to be slightly unclamped.When accelerator open degree reduces, hydraulic motor
Inlet flow rate synchronously reduces, and speed is slower.
Travelling control combination valve embodiment one
As shown in Figures 1 to 6, in the present embodiment, travelling control combination valve 500 mainly includes outer valve 510, inner valve body
511st, combination valve core 512, combination resetting spring 513 and combination valve control unit 514.
Interconnected combination valve oil suction chamber 510a, combination valve core cavity 510b, combination valve splitter cavity are provided in outer valve
510c, combination valve oil outlet chamber A, combination valve oil outlet chamber B and combination valve oil back chamber 510d.Correspondence is provided with connection combination valve on outer valve
The combination valve import P of oil suction chamber 510a, the combination valve core mouth of connection combination valve core cavity 510b, connection combination valve splitter cavity 510c's
It combines valve outlet A, B and connects the combination valve oil return inlet T of combination valve oil back chamber 510d.
Wherein, combination valve outlet can be set multiple, it is preferred that combination valve outlet is two, combination valve outlet A, combination valve
Outlet B corresponds to the oil inlet of the related organizations such as unicom hydraulic motor, oil outlet respectively.
Combination valve core 512 includes the outer spool 5121 interlocked and inner spool 5122, in inner spool 5122 and outer spool 5121
It is correspondingly arranged outside.
Combining resetting spring 513 includes outer resetting spring 5131 and interior resetting spring 5132, interior resetting spring 5132 and outer
It is correspondingly arranged inside and outside resetting spring 5131.
By pushes pedals body 200, pedal body 200 is pressed downward combination valve control unit 514, combination valve control unit
514 push down on outer spool 5121, and compress outer resetting spring 5131 and interior resetting spring 5132 simultaneously.At this point, outer spool
5121 move down, corresponding cut-out combination valve oil back chamber 510d.
When combination valve control unit 514 continues to move down, by resetting spring in compression 5132, drive inner spool 5122 to
Lower movement, when inner spool 5122 is moved to operating position, inner spool lower convex platform 5122e is got lodged at inner valve body through hole 511a, i.e.,
Cut off the passage between combination valve import P and combination valve oil return inlet T, that is to say, that secondary stage is carried out by inner spool 5122
Control, to cut off combination valve oil return inlet T.
At this point, combination valve splitter cavity 510c is connected, hydraulic fluid enters from combination valve import P, from inner valve body 511
Passage enter, the annulus between inner spool recess portion 5122c and inner valve body 511 through inner spool 5122 then up, then from
Inner valve body through hole 511a is downward, and the passage out of inner valve body through hole 511a is downward, enters back into combination valve splitter cavity 510c.
Conversely,
Inner spool 5122 is moved upward under the active force of interior resetting spring 5132 to reset position, convex under inner spool
Platform 5122e cuts off combination valve splitter cavity 510c, and the hydraulic fluid entered from combination valve import P cannot pass through above-mentioned annulus
Into combination valve splitter cavity 510c.
Inner spool convex platform 5122d is also from inner valve body through hole 511a prolapse upwards.
Outer spool 5121 is moved upward to reset position under the active force of outer resetting spring 5131, and connection combination valve returns
Hydraulic fluid port T.
So form way to cycle oil.
Travelling control combination valve embodiment two
Originally apply example and further include inner valve body 511, inner valve body 511 is located in combination valve core cavity 510b, outer resetting spring 5131
Another free end is withstood on inner valve body 511.By inner valve body 511 can connect combination valve oil suction chamber 510a, combination valve core cavity 510b,
Combination valve splitter cavity 510c and combination valve oil back chamber 510d.
It is preferred that the top of inner valve body 511 is provided with the inner valve body through hole 5123a being adapted with inner spool 5122, inner spool
5122 inner spool lower convex platform 5122e is put in inner valve body 511, inner spool recess portion, the inner spool convex platform of inner spool 5122
5122d can be passed freely through in interior valve hole 5123a.When inner spool 5122 moves down to operating position, inner spool convex platform
5122d is located exactly in inner valve body through hole 5123a, and inner spool convex platform 5122d cuts off combination valve oil back chamber 510d with combining
Passage between valve oil suction chamber 510a closes inner valve body through hole 5123a.
Travelling control combination valve embodiment three
In the present embodiment, combination valve control unit 514 is in the tubular of one end closing, the closing end of combination valve control unit 514
Combination valve core mouth is stretched out, the openend of combination valve control unit 514 is located in combination valve core cavity 510b.
Inner spool 5122 includes from top to bottom setting inner spool trip segment 5122a, inner spool convex platform 5122d, inner spool
Recess portion 5122c, inner spool lower convex platform 5122e.Inner spool convex platform 5122d and inner spool lower convex platform 5122e respectively with inner valve body
511 inner wall sliding contact.
It is preferred that the axial dimension of inner spool trip segment 5122a is more than the axial dimension of inner spool convex platform 5122d.
The top surface of tabletting 5141 is withstood on outer spool 5121, the upper freedom of outer resetting spring 5131 and interior resetting spring 5132
End withstands on the bottom surface of tabletting 5141.
Travelling control combination valve example IV
In the present embodiment, mainly include pedal mounting base 100, pedal body 200, resetting-mechanism and travelling control combination valve
500.Wherein, travelling control combination valve 500 can be used such as preceding any travelling control combination valve 500, something in common, herein not
It repeats again.
Existing structure can be used in pedal mounting base 100.
Pedal body 200 is hinged on by structures such as hinge shafts in pedal mounting base 100.
Resetting-mechanism can make subtended angle between pedal body 200 and pedal mounting base 100 from large to small.Resetting-mechanism is main
Including pedal resetting spring or pedal reduction torsion spring, two effect ends of pedal resetting spring or pedal reduction torsion spring are directly withstood on
In pedal mounting base 100 and pedal body 200.Two effect ends of pedal resetting spring or pedal reduction torsion spring can also by
Ground connection is withstood in pedal mounting base 100 and pedal body 200.
The directly or indirectly drive connection combination valve control unit 514 of pedal body 200.
Travelling control combination valve embodiment five
The present embodiment is used for the hydraulic control of wheel excavator, and travelling control combination valve 500 and Throttle Opening Control foot pedal are total
It is matched into, two direction of travel control solenoid valves 600.It is opened up on the outer valve bottom surface of walking control combination valve 500
Two combinations valve outlet A, B are correspondingly arranged a direction of travel control electromagnetic valve I, a direction of travel control solenoid valve respectively
II。
Combine the oil inlet unicom of valve outlet A and hydraulic motor, another combination valve outlet B and hydraulic motor it is fuel-displaced
Mouth unicom.The combination valve oil return inlet T of travelling control combination valve 500 and the oil outlet of hydraulic motor.
(1) travelling control combination valve 500 controls electromagnetic valve I by combination valve import P oil inlets, through direction of travel from combination
Valve outlet A is fuel-displaced, and the oil inlet of unicom hydraulic motor.Driving is advanced, acceleration mode associates as follows：
When advance accelerates, the pedal body 200 for control foot pedal assembly of stepping on the gas downwards.Pedal body 200 is pacified with pedal
Subtended angle between dress seat 100 becomes smaller, and the accelerator open degree control mechanism 420 of Throttle Opening Control foot pedal assembly is just corresponding to control engine
Throttle changes from small to big.When advance is slowed down, only pedal body 200 need to be slightly unclamped.
While pushing pedal body 200, pedal body 200 is directly or indirectly pressed downward combination valve control unit 514, group
Closing valve control unit 514 promotes outer spool 5121 to move down, level-one cut-out combination valve oil back chamber 510d, while drives tabletting 5141
Also outer resetting spring 5131 is compressed downwards.
Continue firmly to step on, pedal body 200 continues to lower swing, and interior resetting spring 5132 is compressed in tabletting 5141, in drive
Spool 5122 is moved downward to operating position.Inner spool convex platform just blocks inner valve body through hole 5123a, two level cut-out combination valve
Oil back chamber 510d.
Hydraulic fluid enters from combination valve import P in combination valve core cavity 510b, inner valve body 511, combination valve splitter cavity
510c, combination valve oil outlet chamber A.Direction of travel control electromagnetic valve I has obtained electric-opening combination valve outlet A at this time.
Solenoid valve import of the hydraulic fluid then through direction of travel control electromagnetic valve I enters in electromagnetic valve body, from solenoid valve
Outlet flows to combination valve outlet A, the oil inlet of hydraulic motor, and then drives hydraulic motor, realizes that driving is advanced.
(2) travelling control combination valve 500 is by combination valve oil return inlet T oil return, and with advance braking action of vehicle, parking, parking
State associates as follows：
As above reversely manipulation, is trampled, pedal body 200 is in the resetting-mechanism 410 of accelerator control device 400 when loosening slightly
Active force under, be raised above, loosen the pressure to combination valve control unit 514, then outer spool 5121, inner spool 5122 correspond to
Outer resetting spring 5131, interior resetting spring 5132 elastic acting force under, move upwardly into reset position.Inner valve body 511 is cut at this time
Disconnected combination valve splitter cavity 510c, outer valve 510 connect combination valve oil back chamber 510d.
When inner spool convex platform is deviate from from inner valve body through hole 5123a, that is, combination valve oil suction chamber 510a is turned on combining
Valve oil back chamber 510d, a part enter combination valve oil return from the hydraulic fluid that combination valve import P comes in from inner valve body through hole 5123a
Chamber 510d.The hydraulic fluid that hydraulic motor oil inlet is so flowed into from combination valve outlet A is accordingly reduced, and drives hydraulic motor power
It reduces, vehicle also just slowly slows down.
(3) travelling control combination valve 500 controls electromagnetic valve II from combination by combination valve import P oil inlets through direction of travel
Valve outlet B is fuel-displaced, and is associated as follows with driving retrogressing, acceleration mode：
The process of the manipulation combination valve outlet B of travelling control combination valve 500 with flowing through that combine valve outlet A roughly the same,
This is repeated no more.
Combination valve outlet A is cut off, and direction of travel control electromagnetic valve II opens combination valve outlet B, when hydraulic fluid is from row
The combination valve import P for walking control combination valve 500 enters, combined valve splitter cavity 510c, direction of travel control electromagnetic valve II, then from
Electromagnetic valve outlet flows to the combination valve outlet B of travelling control combination valve 500, and the oil outlet of last unicom hydraulic pressure horse motor is realized
Driving retreats.
Conversely, corresponding manipulation electromagnetic valve core reverse movement can close electromagnetic valve outlet, that is to say, that corresponding to close combination
Valve outlet B, corresponding related organization stop corresponding actions.
(4) by combination valve oil return inlet T oil return, the hydraulic motor being associated stops dynamic travelling control combination valve 500
Make, realize parking, parking.
Direction of travel control solenoid valve embodiment one
As shown in Figure 1 to Figure 3, in the present embodiment, direction of travel control solenoid valve mainly includes electromagnetic valve body 610, electromagnetism
Spool 620, electromagnetism resetting spring 624 and solenoid valve control portion.
Existing structure can be used in electromagnetic valve body 610, and interconnected electromagnetic valve work chamber is provided in electromagnetic valve body 610
614 and electromagnetic valve oil return chamber 615.The corresponding solenoid valve import 611 for being provided with connection electromagnetic valve work chamber 614 on electromagnetic valve body 610
With electromagnetic valve outlet 612 and the electromagnetic valve oil return mouth 613 of connection electromagnetic valve oil return chamber 615.Pass through solenoid valve control portion and electricity
Magnetic reset spring 624 can be such that electromagnetic valve core is moved between electromagnetic valve work chamber 614 and electromagnetic valve oil return chamber 615, corresponding unicom
Electromagnetic valve outlet 612 and cut-out electromagnetic valve oil return mouth 613.When electromagnetic valve core obtain it is electric it is reciprocal move to operating position when, connection can be corresponded to
Three-way electromagnetic valve outlet 612 and cut-out electromagnetic valve oil return mouth 613.Realize the unicom switching of walk motor with hydraulic pressure oil inlet, oil outlet,
And then realize the advance and retrogressing of vehicle.
Direction of travel control solenoid valve embodiment two
In the present embodiment, it is convex that electromagnetic valve core includes electromagnetic valve core lower convex platform 621, electromagnetic valve core recess portion 622 and electromagnetic valve core
Platform 623.
Electromagnetism resetting spring 624, and two free ends of electromagnetism resetting spring 624 point are arranged on electromagnetic valve core lower convex platform 621
It does not withstand on electromagnetic valve core and on the inner wall of electromagnetic valve body 610.
Electromagnetic valve core recess portion 622 forms hydraulic medium from solenoid valve import 611 to electromagnetism together with electromagnetic valve work chamber 614
The passage of valve outlet 612, and an oil return stroke of electromagnetic valve core is equal to the operating compression distance of electromagnetism resetting spring 624.
Electromagnetic valve core boss 623 is set as follows：When electromagnetic valve core moves to the operating position of oil return stroke, electromagnetic valve core is convex
Platform 623 can block electromagnetic valve oil return mouth 613.
It is preferred that electromagnetic valve core boss 623 includes cylindrical section 623a and conical section 623b.Cylindrical section 623a is close to solenoid valve
Core recess portion 622, cylindrical section 623a is between solenoid valve import 611 and electromagnetic valve outlet 612, and cylindrical section 623a can unicom electricity
Magnet valve import 611 and electromagnetic valve outlet 612.Conical section 623b is away from electromagnetic valve core recess portion 622.When electromagnetic valve core recess portion 622 moves
To oil return stroke operating position when, the joining place of cylindrical section 623a and conical section 623b can block electromagnetic valve outlet 612 just.
It is preferred that electromagnetic valve body 610 is in hollow cylindrical shape, electromagnetic valve work chamber is set along the axis of electromagnetic valve body 610
614 and electromagnetic valve oil return chamber 615.Solenoid valve import 611 is multiple, body wall of multiple solenoid valve imports 611 along electromagnetic valve body 610
It is arranged to a circle.Electromagnetic valve outlet 612 may also set up multiple, and multiple electromagnetic valve outlets 612 are also set along the body wall of electromagnetic valve body 610
It is set to a circle.In this way, being equivalent to along electromagnetic valve body 610, a circle solenoid valve import 611 and a circle electromagnetic valve outlet 612 are set.
It is preferred that electromagnetic valve core is in ladder undergauge shape, one section of thick undergauge is correspondingly formed electromagnetic valve core lower convex platform 621, carefully
One section of undergauge at be correspondingly formed electromagnetic valve core recess portion 622.The end of electromagnetic valve core is in bullet-shaped, is correspondingly formed electromagnetic valve core
Boss 623.
Solenoid valve control portion is electromagnetic control structure, makes electromagnetic valve core in the energized state in 614 He of electromagnetic valve work chamber
It is moved between electromagnetic valve oil return chamber 615, existing structure can be used in solenoid valve control portion, and details are not described herein.
Direction of travel control solenoid valve embodiment three
The present embodiment is used for the hydraulic control of wheel excavator, is matched with pedal mounting base 100, pedal body 200.
Two direction of travel control solenoid valves 600 match respectively with a travelling control combination valve 500, in walking control combination valve
Two combinations valve outlet A, the B opened up on 500 outer valve bottom surface, combination valve outlet A, B are correspondingly arranged a walking side respectively
To control electromagnetic valve I, a direction of travel control electromagnetic valve II.
Valve outlet A, combination valve outlet the B associated therewith with driving respectively are combined, i.e. walk motor with hydraulic pressure associates.
(1) direction of travel control electromagnetic valve I associates as follows with driving forward travel state：
Combination valve oil return inlet T is closed, and the oil pressure of electromagnetic valve oil return mouth 613 reduces.
Hydraulic fluid enters from the combination valve import P of travelling control combination valve, enters electromagnetic valve body through solenoid valve import 611
In 610, push up electromagnetic valve core recess portion 622, and compress electromagnetism resetting spring 624, warhead shape electromagnetic valve core boss 623 i.e. to
Electromagnetic valve outlet 612 is close.
Under the active force of endlessly hydraulic fluid, the conical section 623b of warhead shape electromagnetic valve core boss 623 is crossed
Electromagnetic valve outlet 612, and the lower end edge of cylindrical section 623a is just just past electromagnetic valve outlet 612.In this way, hydraulic fluid is from walking
The combination valve import P of control combination valve enters in electromagnetic valve body 610, then flows to travelling control combination valve from electromagnetic valve outlet 612
Combination valve outlet A, and unicom walk motor with hydraulic pressure oil inlet, and then realize and advance.
Conversely, corresponding manipulation electromagnetic valve core reverse movement can close electromagnetic valve outlet 612, that is to say, that corresponding to close
Valve outlet A is combined, corresponding related organization stops corresponding actions.
(2) direction of travel control electromagnetic valve II associates as follows with driving fallback state：
The process and direction of travel of direction of travel control electromagnetic valve II control the main distinction of electromagnetic valve I to be, walking side
Combination valve outlet B is assemblied in control electromagnetic valve II.Other are same as described above, and details are not described herein.
In this way, hydraulic fluid enters from the combination valve import P of travelling control combination valve in electromagnetic valve body 610, then from electromagnetism
Valve outlet 612 flows to the combination valve outlet B of travelling control combination valve, and then unicom, the oil outlet of walk motor with hydraulic pressure, after realization
It moves back.
Conversely, corresponding manipulation electromagnetic valve core reverse movement can close electromagnetic valve outlet 612, that is to say, that corresponding to close
Valve outlet B is combined, corresponding related organization stops corresponding actions.
(3) direction of travel control electromagnetic valve I, direction of travel control electromagnetic valve II and parking, parking, job state are as follows
Association：
If described two direction of travel control solenoid valves are in off-position, the fluid of combination valve import P will be direct
By T mouthfuls of oil returns, vehicle will be in parking, parking or job state.
The product form and style of above-described embodiment and attached drawing and the non-limiting present invention, any technical field it is common
The appropriate variation or modification that technical staff does it all should be regarded as not departing from the patent category of the present invention.
Claims (5)
1. travelling control foot pedal assembly, including pedal mounting base, the pedal body being hinged in the pedal mounting base and
The resetting-mechanism that can reset the subtended angle between the pedal body and the pedal mounting base, it is characterised in that：Further include control
The travelling control combination valve of advance and retreat speed processed, the pedal body control travelling control combination valve correspond to cut-out combination valve oil return
Chamber, connects combination valve splitter cavity, and the flow of the hydraulic fluid of combination valve splitter cavity variation proportional to the subtended angle, and with warp
Travelling control combination valve is connected to the proportional variation of flow of the hydraulic fluid of driving related organization.
2. travelling control foot pedal assembly as described in claim 1, it is characterised in that：The travelling control combination valve includes group
Close valve control unit, combination valve splitter cavity, combination valve oil suction chamber, combination valve oil back chamber, combination valve core and combination resetting spring；
Combination valve core includes the inside and outside inner spool for being correspondingly arranged and interlocking and outer spool, and combination resetting spring includes inside and outside correspondence and covers
If interior resetting spring and outer resetting spring.
3. travelling control foot pedal assembly as claimed in claim 2, it is characterised in that：The pedal body directly or indirectly passes
Dynamic connection combination valve control unit, corresponding compression and the outer resetting spring of release, and then outer spool is made to correspond to cut-out and connect combination valve
Oil back chamber；Resetting spring in corresponding compression and release, and then connection and cut-out combination valve splitter cavity are corresponded to by inner spool；And group
The flow for closing the hydraulic fluid of valve splitter cavity is directly proportional to the impulse stroke of inner spool.
4. travelling control foot pedal assembly as described in claim 1, it is characterised in that：
The travelling control combination valve includes the inside and outside inner valve body and outer valve being correspondingly arranged；It is from top to bottom provided on inner spool
Inner spool trip segment, inner spool convex platform, inner spool recess portion, inner spool lower convex platform；
The one end of the combination valve control unit stretches out in the combination valve core mouth on outer valve, and directly or indirectly withstands on described
On pedal body；
Described combination valve control unit the other end puts in the combination valve core intracavitary in outer valve, and is withstood on by tabletting described interior multiple
On the upper free end of position spring and outer resetting spring；The lower free end top of the outer resetting spring is on the inner body, described interior multiple
The lower free end of position spring is withstood on inner spool convex platform；
When inner spool moves to operating position, inner spool convex platform cut-out combination valve oil back chamber, inner spool recess portion connection combination valve point
Flow chamber；When inner spool moves to reset position, inner spool lower convex platform cut-out combination valve splitter cavity, inner spool recess portion connection combination valve returns
Oil pocket.
5. travelling control foot pedal assembly as claimed in claim 4, it is characterised in that：
It is provided on the combinaing valve body and connects the combination valve oil outlet chamber A of the combination valve splitter cavity and combination valve oil outlet chamber B, combined
Valve oil outlet chamber A connects driving related organization with combination valve oil outlet chamber B；Combination valve oil outlet chamber A and combination valve oil outlet chamber B are respectively communicated with
One direction of travel control solenoid valve；
The direction of travel control solenoid valve includes electromagnetic valve body, electromagnetic valve core, electromagnetism resetting spring and solenoid valve control portion,
When solenoid valve control portion control electromagnetic valve core is back and forth moved in operating position and reset position, corresponding connection and cut-out combination valve
Oil outlet chamber A or combination valve oil outlet chamber B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796411.5A CN106245707B (en) | 2016-08-31 | 2016-08-31 | Travelling control foot pedal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796411.5A CN106245707B (en) | 2016-08-31 | 2016-08-31 | Travelling control foot pedal assembly |
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| CN106245707A CN106245707A (en) | 2016-12-21 |
| CN106245707B true CN106245707B (en) | 2018-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610796411.5A Active CN106245707B (en) | 2016-08-31 | 2016-08-31 | Travelling control foot pedal assembly |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109263470B (en) * | 2016-08-31 | 2021-06-15 | 泉州鑫豪工程机械科技有限公司 | Engineering truck accelerator and walking control system and method |
| CN107130655B (en) * | 2017-06-22 | 2019-06-18 | 山推工程机械股份有限公司 | A kind of control method and control system of bull-dozer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10320066A (en) * | 1997-05-22 | 1998-12-04 | Shin Caterpillar Mitsubishi Ltd | Operation device |
| JP2000204597A (en) * | 1998-11-11 | 2000-07-25 | Yutani Heavy Ind Ltd | Controller of construction machine |
| CN101112894A (en) * | 2006-08-18 | 2008-01-30 | 石淳民 | Oil-supply braking pedal control mechanism and double-control pedal restraint mechanism |
| CN1903627A (en) * | 2006-08-18 | 2007-01-31 | 石淳民 | Oil supply brake integration mechanism of vehicle and bipurpose pedal hand control mechanism |
| CN206110221U (en) * | 2016-08-31 | 2017-04-19 | 泉州鑫豪工程机械科技有限公司 | Walking control running -board assembly |
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