CN106438514B - Loading machine side dumping hydraulic system - Google Patents
Loading machine side dumping hydraulic system Download PDFInfo
- Publication number
- CN106438514B CN106438514B CN201610926499.8A CN201610926499A CN106438514B CN 106438514 B CN106438514 B CN 106438514B CN 201610926499 A CN201610926499 A CN 201610926499A CN 106438514 B CN106438514 B CN 106438514B
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- Prior art keywords
- switch valve
- valve
- side dumping
- state
- scraper bowl
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/425—Drive systems for dipper-arms, backhoes or the like
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to loading machine side dumping hydraulic system, to solve the spacing problem of existing loading machine lateral unloading device；A kind of loading machine side dumping hydraulic system is provided, including distributing valve, side dumping oil cylinder, controller, first, second, third switch valve, the first and second sensors, accumulator, hydraulic oil container, distributing valve work A mouths and work B mouths correspond to connected with the small chamber of side dumping oil cylinder and big chamber respectively by the road；First, second, third switch valve is the magnetic valve that control terminal is connected with controller, and first, second sensor is connected with controller, and first switch valve is arranged on the oil circuit between the work A mouths of distributing valve and the big chamber of side dumping oil cylinder；Second switch valve is arranged on the connection oil circuit between the big chamber and accumulator of side dumping oil cylinder, and the 3rd switch valve is connected on the connection oil circuit of accumulator and hydraulic oil container.The effective internal impact for solving hydraulic system of the invention improves its reliability, while solves to collide caused noise pollution, lifts driver comfort.
Description
Technical field
The present invention relates to a kind of hydraulic system, more specifically to a kind of loading machine side dumping hydraulic system.
Background technology
One end of loading machine side dumping scraper bowl is hinged on bucket bracket, is connected between scraper bowl and bracket with side dumping oil cylinder,
When the piston rod of side dumping oil cylinder stretches out, side dumping scraper bowl is rotated around hinged end, and the material in scraper bowl is drawn off from the end of scraper bowl；Side dumping
During the piston rod retraction of oil cylinder, side dumping scraper bowl rotates around hinged end to be fallen after rise, is placed on bracket.Because scraper bowl will finally be placed in support
On frame, fall impact during to bracket after rise to buffer side dumping scraper bowl, be provided with buffer unit, filled at present in loading machine side dumping
Put the buffer unit used mainly have it is following several：
The first is the limiting buffer technology (limited block rigid collision) of Purely mechanical, is that the current domestic, world is generally adopted
Struggle against spacing technology for side.Mainly it is made up of welded type rigidity limiting steering bearing, side dumping oil cylinder, side dumping hydraulic system.It is former
Reason is：When side bucket resets to extreme position, the side spacing holder block of bucket directly contacts with the spacing bearing of bracket, and direct collision is spacing.
Its advantage is that simple in construction, cost is cheap, and its technical deficiency mainly has：
(1) impulsive force of rigid collision is very big, can cause side bucket and bracket corresponding site fatigue fracture；
(2) huge noise is sent when colliding, noise pollution, influences driver comfort；
(3) because the impact for resetting to final position is bigger, side dumping hydraulic system is reliable because of pressure flow suddenly change
Property decline, vehicle because of intense vibration reliability decrease, the discomfort of bridge operation personnel often phenomena such as.
It is for second the rubber damping buffer limit technology of Purely mechanical.Domestic at present, the international side bucket limit used on a small quantity
Position technology.Mainly it is made up of the spacing block rubber of side dumping, welded type rigidity limiting steering bearing, side dumping oil cylinder, side dumping hydraulic system.
Its principle is：When side dumping hopper resets to extreme position, spacing block rubber contacts with limiting steering bearing first, utilizes spacing rubber
The damping energy-absorbing buffering characteristic of block, extend buffering collision time, reduce the impulsive force of steering lock position.Residue is not limited
The steering energy that block rubber absorbs finally is eliminated by the rigid shock of spacing bearing again.Its advantage is that simple in construction, cost is low
Honest and clean, reliability is high, and its technical deficiency mainly has：
(1) the damping energy absorption ability of spacing block rubber is limited, causes the impulsive force of side bucket reset terminal very big；
(2) installation accuracy of limiting steering block rubber, the welding processing required precision of rigid limit seat are high；
(3) because the impact for resetting to final position is bigger, side dumping hydraulic system is reliable because of pressure flow suddenly change
Property decline, vehicle because of intense vibration reliability decrease, the discomfort of bridge operation personnel often phenomena such as.
(4) spacing block rubber damping buffering performance is sensitive to environment temperature, and temperature easily fails when too low or too high.
The third is the buffer limit technology of mechanical jack cut-out valve type.Domestic at present, the international side bucket limit used on a small quantity
Position technology.Mainly it is made up of hydraulic cutting valve, limit base, pipe-line system.Its principle is connected between distributing valve, side dumping oil cylinder
Two stop valves are accessed, when side dumping hopper resets, cut-out approaching side unloads the hydraulic oil of oil cylinder size chamber, so as to realize extreme position
Buffering.Its advantage be turned off rapid, damping effect preferably, environmental suitability it is stronger.Its technical deficiency mainly has：
(1) stop valve is on-off principle, breaking moment, hydraulic system internal pressure impact or bigger；
(2) higher is required to the installation accuracy of manufacture of stop valve and limited block (bar), adjustment difficulty is big.
The content of the invention
The technical problem to be solved in the present invention is the spacing problem for existing loading machine lateral unloading device, and provides a kind of tool
The loading machine side dumping hydraulic system of limited location pooling feature.
The present invention is such to realize the technical scheme of its purpose：A kind of loading machine side dumping hydraulic system is provided, including
Distributing valve, side dumping oil cylinder, the work A mouths of the distributing valve and work B mouths correspond to small with the side dumping oil cylinder by the road respectively
Chamber connects with big chamber；Through characterized by further comprising controller, first switch valve, second switch valve, the 3rd switch valve, for examining
Survey the first sensor of loading machine side dumping scraper bowl and holder angle, for detecting distributing valve stem position second sensor, accumulation of energy
Device, hydraulic oil container；The first switch valve, second switch valve, the 3rd switch valve are that control terminal is connected with the controller
Magnetic valve, first sensor and second sensor are connected with the controller, and the first switch valve is arranged on the distributing valve
Work A mouths and the big chamber of side dumping oil cylinder between oil circuit on；The second switch valve be arranged on the big chamber of the side dumping oil cylinder with
On connection oil circuit between the accumulator, the 3rd switch valve is connected to the connection oil circuit of the accumulator and hydraulic oil container
On.In the present invention, the controller detects the folder of scraper bowl and bracket by the first sensor and second sensor respectively
Angle and distributing valve stem position and the operating state for judging scraper bowl, when the operating state of scraper bowl is the bucket-shaped state of receipts and scraper bowl and bracket
Between angle when being less than predetermined value, the controller controls the first switch valve and the 3rd switch valve be in cut-off state, control
Second switch valve processed is in the conduction state；When scraper bowl is in tipping bucket state, the controller controls the first switch valve to be in
Conducting state, control second switch valve are in cut-off state；When scraper bowl be in receive bucket-shaped state and when scraper bowl and bracket between angle
The controller controls the first switch valve is in the conduction state, controls second switch valve to be in end shape during more than predetermined value
State.Further, the 3rd switch valve described in when the second switch valve is in the conduction state is in cut-off state；Described second opens
It is in the conduction state to close the 3rd switch valve described in when valve is in cut-off state.
In the loading machine side dumping hydraulic system of the present invention, in addition to safety valve, the safety valve and the described 3rd switch
Valve is connected in parallel on the connection oil circuit between the accumulator and hydraulic oil container.
Compared with prior art, it is new that the present invention solves side-discharging device buffer limit system mounting means of the present invention to the present invention
Grain husk, connection and reasonable arrangement, because the cushioning effect of accumulator effectively reduce or eliminates the mass inertia of side bucket, improve side-discharging device
Reliability, the effective internal impact for solving hydraulic system improves its reliability, while noise caused by solving to collide is dirty
Dye, lift driver comfort.
Brief description of the drawings
Fig. 1 is the schematic diagram of loading machine side dumping hydraulic system of the present invention.
Parts title and sequence number in figure：
Distributing valve 1, first switch valve 2, side dumping oil cylinder 3, second switch valve 4, the 3rd switch valve 5, safety valve 6, accumulator
7th, first sensor 8, second sensor 9, controller 10, hydraulic oil container 11.
Embodiment
Illustrate specific embodiment below in conjunction with the accompanying drawings.
Loading machine side dumping hydraulic system in the present invention, including distributing valve 1, first switch valve 2, side dumping oil cylinder 3, second open
Close valve 4, the 3rd switch valve 5, safety valve 6, accumulator 7, first sensor 8, second sensor 9, controller 10, hydraulic oil container
11。
As shown in figure 1, distributing valve 1 has work A mouths and work B mouths and oil inlet, oil inlet is used for and pressure oil-source
As hydraulic pump (not shown) connects；The work A mouths and work B mouths of distributing valve 1 correspond to small with side dumping oil cylinder 3 by the road respectively
Chamber R connects with big chamber H；The big chamber H of side dumping oil cylinder 3 is connected with accumulator 7 by the road；
First switch valve 2, second switch valve 4, the 3rd switch valve 5 are the magnetic valves that control terminal is connected with controller 10,
Wherein first switch valve 2 is arranged on the oil circuit between the work A mouths of distributing valve 1 and the big chamber H of side dumping oil cylinder 3, control distribution
The break-make of oil circuit between the work A mouths of valve 1 and the big chamber H of side dumping oil cylinder 3；Second switch valve 4 is arranged on the big chamber of side dumping oil cylinder 3
On oil circuit between H and accumulator 7, the break-make of oil circuit between big the chamber H and accumulator 7 of control side dumping oil cylinder 3；3rd switch valve
5 are arranged on the oil circuit between accumulator 7 and hydraulic oil container 11, control the break-make of oil circuit between accumulator 7 and hydraulic oil container 11,
Safety valve 6 is in parallel with the 3rd switch valve 5, when the 3rd switch valve 5 is in hypertonia in cut-off state and accumulator, can pass through
Safety valve pressure release.
Distributing valve 1 has three working positions, is left position, middle position, right position respectively, when distributing valve 1 is in left position, its work A
Mouth is fuel-displaced, and work B mouth oil returns, and now the piston rod of side dumping oil cylinder 3 stretches out, and correspond to the tipping bucket operating state of scraper bowl；In being in
During position, the work A mouths and work B mouths of distributing valve are in cut-off state；During in right position, its work B mouths are fuel-displaced, and work A mouths
The piston rod retraction of oil return, now side dumping oil cylinder 3, correspond to the receipts bucket operating state of scraper bowl.Second sensor 9 and controller 10
Connection, for detecting the stem position information of distributing valve, controller 10 detects the valve rod position of distributing valve 1 by second sensor 9
Put, so as to judge the operating state of scraper bowl.
First sensor 8 is connected with controller 10, for detecting the angle between side dumping scraper bowl and bracket, first sensor
8 can be angular transducer or proximity switch, when side dumping scraper bowl is less than certain value with bracket angle, first sensor 8
It can detect and send useful signal to controller.Controller 10 is according to the signal of first sensor 8 and second sensor 9
Signal is so as to judging the position of side dumping scraper bowl and whether in receiving bucket-shaped state；When scraper bowl is in tipping bucket state, control
Device 10 processed controls the work that first switch valve 2 is in the conduction state, control second switch valve 4 is in cut-off state, now distributing valve 1
Make that the big chamber of A mouths to side dumping oil cylinder 3 is oil-filled, the work B mouth oil returns of the small chamber (rod chamber) of side dumping oil cylinder 3 to distributing valve 1, side dumping
The piston rod of oil cylinder 3 stretches out and jacks up side dumping scraper bowl and carry out tipping bucket action；When scraper bowl be in receive bucket-shaped state and when scraper bowl and support
When angle is more than predetermined value between frame, namely although side dumping scraper bowl is to carry out receiving bucket action, but the position of side dumping scraper bowl is from spacing
Position is mutually remote, and now the control first switch of controller 10 valve 2 is in the conduction state, controls second switch valve 4 to be in cut-off state
So as to meet that side dumping scraper bowl can quickly receive bucket action.When the operating state of scraper bowl presss from both sides for the bucket-shaped state of receipts and between scraper bowl and bracket
When angle is less than predetermined value, namely receives bucket action and draw to an end, now side dumping scraper bowl controls close to restraining position, now controller 10
The switch valve 5 of first switch valve 2 and the 3rd is in cut-off state, controls second switch valve 4 in the conduction state, now side dumping oil cylinder
The hydraulic oil of 3 big intracavitary enters accumulator 7 through second switch valve 4, so as to play a part of buffering to the receipts bucket of scraper bowl；
During receiving bucket buffering, if hypertonia, hydraulic oil enters hydraulic oil tank 11 through safety valve 6；Acted when receiving bucket
Cheng Hou, distributing valve 1 are in middle position, and now controller 10 can allow first switch valve 2 and second switch valve 4 to be in cut-off state,
So as to spacing to side dumping scraper bowl.When second switch valve is in the conduction state, the 3rd switch valve is in cut-off state, second switch
The 3rd switch valve is in the conduction state when valve is in cut-off state, and the hydraulic oil in accumulator is carried out into pressure release, is struggled against to receive next time
Buffering is prepared.
Claims (3)
1. a kind of loading machine side dumping hydraulic system, including the work A mouths of distributing valve, side dumping oil cylinder, the distributing valve and work B mouths
Correspond to and connected with the small chamber of the side dumping oil cylinder and big chamber by the road respectively；Characterized by further comprising controller, first switch
Valve, second switch valve, the 3rd switch valve, the first sensor for detecting loading machine side dumping scraper bowl and holder angle, for examining
Survey distributing valve stem position second sensor, accumulator, hydraulic oil container；The first switch valve, second switch valve, the 3rd switch
Valve is that the magnetic valve that control terminal is connected with the controller, first sensor and second sensor are connected with the controller,
The first switch valve is arranged on the oil circuit between the work A mouths of the distributing valve and the big chamber of side dumping oil cylinder；Described second opens
Close valve to be arranged on the connection oil circuit between the big chamber of the side dumping oil cylinder and the accumulator, the 3rd switch valve is connected to
On the connection oil circuit of the accumulator and hydraulic oil container；The controller is distinguished by the first sensor and second sensor
Scraper bowl and the angle and distributing valve stem position of bracket and the operating state for judging scraper bowl are detected, when the operating state of scraper bowl is receipts
Bucket-shaped state and when angle is less than predetermined value between scraper bowl and bracket, the controller controls the first switch valve and the 3rd switch
It is in the conduction state that valve is in cut-off state, control second switch valve；The controller control when scraper bowl is in tipping bucket state
The first switch valve is in the conduction state, control second switch valve is in cut-off state；When scraper bowl be in receive bucket-shaped state and when
Angle is more than controller during predetermined value and controls that the first switch valve is in the conduction state, control the between scraper bowl and bracket
Two switch valves are in cut-off state.
2. loading machine side dumping hydraulic system according to claim 1, it is characterised in that also including safety valve, the safety valve
It is connected in parallel on the 3rd switch valve on the connection oil circuit between the accumulator and hydraulic oil container.
3. loading machine side dumping hydraulic system according to claim 1, it is characterised in that the second switch valve is on
The 3rd switch valve is in cut-off state described in during state；Described in when the second switch valve is in cut-off state at the 3rd switch valve
In conducting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926499.8A CN106438514B (en) | 2016-10-31 | 2016-10-31 | Loading machine side dumping hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926499.8A CN106438514B (en) | 2016-10-31 | 2016-10-31 | Loading machine side dumping hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438514A CN106438514A (en) | 2017-02-22 |
| CN106438514B true CN106438514B (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610926499.8A Active CN106438514B (en) | 2016-10-31 | 2016-10-31 | Loading machine side dumping hydraulic system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041980A (en) * | 2009-10-21 | 2011-05-04 | 李德堂 | Non-impact hydraulic oil pumping device capable of realizing full energy recovery |
| CN102869839A (en) * | 2010-12-24 | 2013-01-09 | 株式会社小松制作所 | Driving damper control device for wheel loader |
| CN204753689U (en) * | 2015-05-15 | 2015-11-11 | 徐工集团工程机械股份有限公司 | Scraper ride performance control hydraulic system |
| CN105544631A (en) * | 2015-12-29 | 2016-05-04 | 太原理工大学 | Control loop of hydraulic bucket working device |
| CN105971042A (en) * | 2015-03-10 | 2016-09-28 | 住友重机械工业株式会社 | Nawy, and vibration attenuation method for nawy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09217377A (en) * | 1996-02-14 | 1997-08-19 | Komatsu Ltd | Bucket swing prevention device of wheel loader |
| US6167701B1 (en) * | 1998-07-06 | 2001-01-02 | Caterpillar Inc. | Variable rate ride control |
| JP2007239853A (en) * | 2006-03-08 | 2007-09-20 | Kyoritsu Kogyo Kk | Construction and civil engineering machine with fiber reinforced accumulator |
| KR101464378B1 (en) * | 2007-12-26 | 2014-11-24 | 두산인프라코어 주식회사 | Bucket shock absorbing apparatus for consruction machinery |
-
2016
- 2016-10-31 CN CN201610926499.8A patent/CN106438514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041980A (en) * | 2009-10-21 | 2011-05-04 | 李德堂 | Non-impact hydraulic oil pumping device capable of realizing full energy recovery |
| CN102869839A (en) * | 2010-12-24 | 2013-01-09 | 株式会社小松制作所 | Driving damper control device for wheel loader |
| CN105971042A (en) * | 2015-03-10 | 2016-09-28 | 住友重机械工业株式会社 | Nawy, and vibration attenuation method for nawy |
| CN204753689U (en) * | 2015-05-15 | 2015-11-11 | 徐工集团工程机械股份有限公司 | Scraper ride performance control hydraulic system |
| CN105544631A (en) * | 2015-12-29 | 2016-05-04 | 太原理工大学 | Control loop of hydraulic bucket working device |
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| Publication number | Publication date |
|---|---|
| CN106438514A (en) | 2017-02-22 |
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