CN208152129U - A kind of amphibious excavator and its vibration hydraulic system - Google Patents
A kind of amphibious excavator and its vibration hydraulic system Download PDFInfo
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- CN208152129U CN208152129U CN201820292991.9U CN201820292991U CN208152129U CN 208152129 U CN208152129 U CN 208152129U CN 201820292991 U CN201820292991 U CN 201820292991U CN 208152129 U CN208152129 U CN 208152129U
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Abstract
It includes the main pump of output services pressure oil that the utility model, which provides a kind of amphibious excavator and its vibration hydraulic system, vibration hydraulic system,；Export the pioneer pump of pilot pressure oil；Drive the left front travel driving unit of the near front wheel walking；Drive the left back travel driving unit of left rear wheel walking；Travel driving unit before the right side for driving off-front wheel to walk；Travel driving unit behind the right side for driving off hind wheel to walk；Connect the work valve group of main pump with travel driving unit behind travel driving unit, the right side before left front travel driving unit, left back travel driving unit, the right side.When work, the near front wheel, left rear wheel, off-front wheel and off hind wheel walking are respectively driven by travel driving unit behind travel driving unit, the right side before left front travel driving unit, left back travel driving unit, the right side, realize four-wheel drive, so the required discharge capacity of torque needed for the speed reducer of every group of travel driving unit and motor is smaller, to reduce the volume of amphibious excavator, weight is alleviated, energy consumption is reduced.
Description
Technical field
The utility model relates to excavator technical fields, more specifically to a kind of amphibious excavator and its row
Walk hydraulic system.
Background technique
Amphibious excavator is a kind of multipurpose excavation suitable for land, the soft ground in marsh and shallow water operations environment
Machine.Running gear, can be in mud and water surface walking and operation safely using multi-hull ship formula floating box structure and sealing box-shaped creeper tread.
Overlength working arm, the efficient swing mechanism of reinforcement, ensure that operation quality and digging efficiency.
But existing amphibious excavator mostly uses the travel driving unit of two speed reducers and motor configurations, i.e., two
Wheel drive.In order to make amphibious excavator there is bigger bearing capacity and in various complex road surfaces and marsh miriness shoal ring
The ability of border walking generally requires to thereby result in amphibious excavator using high torque speed reducer and huge discharge motor
Volume is larger, heavier mass, and energy consumption is very fast.In addition, two-wheel drive it is intrinsic turning radius it is larger, limit its application model
It encloses and using effect.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of amphibious excavator and its vibration hydraulic system,
With the required discharge capacity of torque and motor needed for reducing speed reducer, to reduce the volume of amphibious excavator, mitigate weight,
Reduce energy consumption.
In order to achieve the above object, the utility model provides the following technical solutions：
A kind of vibration hydraulic system of amphibious excavator, including：
The main pump of output services pressure oil；
Export the pioneer pump of pilot pressure oil；
Drive the left front travel driving unit of the near front wheel walking；
Drive the left back travel driving unit of left rear wheel walking；
Travel driving unit before the right side for driving off-front wheel to walk；
Travel driving unit behind the right side for driving off hind wheel to walk；
Connect the main pump and the left front travel driving unit, the left back travel driving unit, the right preceding walking
The work valve group of travel driving unit behind driving device, the right side.
Preferably, in above-mentioned vibration hydraulic system, the left front travel driving unit, the left back travel driving unit,
It is described it is right before travel driving unit, it is described it is right after travel driving unit structure it is all the same, include hydraulic motor, speed reducer and
Balanced valve is provided with brake on the speed reducer.
Preferably, in above-mentioned vibration hydraulic system, the main pump includes left pump and right pump.
Preferably, in above-mentioned vibration hydraulic system, the work valve group includes：
Speed switching solenoid valve, oil inlet are connect with the pilot pressure port of the pioneer pump, oil outlet and four it is hydraulic
The Variable Control mouth of motor connects；
For providing the system of the brake and the left back travel driving unit of opening the left front travel driving unit
The left decompression logic valve group of the brake oil of dynamic device；
For provide open it is described it is right before travel driving unit brake and it is described it is right after travel driving unit system
The right decompression logic valve group of the brake oil of dynamic device；
Left lateral walks main valve piece, and oil inlet is connect with the oil feeding line of the left pump, oil outlet and the left decompression logic
Valve group is connected with two balanced valves in left side；
Right lateral walks main valve piece, and oil inlet is connect with the oil feeding line of the right pump, oil outlet and the right decompression logic
Valve group is connected with two balanced valves on right side.
Preferably, in above-mentioned vibration hydraulic system, the knot of the left decompression logic valve group and the right decompression logic valve group
Structure is identical, includes：
For selecting the shuttle valve of the high pressure oil of walking working oil path；
The logic switch valve being connect with the brake；
Pressure reducing valve between the shuttle valve and the logic switch valve is set.
Preferably, in above-mentioned vibration hydraulic system, the pressure reducing valve has overflow port；The left decompression logic valve group and institute
It states and is provided with throttle orifice on the braking oil return line of right decompression logic valve group.
Preferably, in above-mentioned vibration hydraulic system, the work valve group further includes：
The straight line travelling control solenoid valve that main valve piece is connected to the oil feeding line of the right pump is walked for controlling the left lateral,
The pilot pressure port of the pioneer pump is connect with the oil inlet of the straight line travelling control solenoid valve；
Straight line travel control valve piece, the pilot control opening of the straight line travel control valve piece and straight line travelling control electricity
The oil outlet of magnet valve connects.
Preferably, in above-mentioned vibration hydraulic system, the left pump and the right pump are minus flow pump.
Preferably, in above-mentioned vibration hydraulic system, the dismounting of the fluid pressure line of each component of the vibration hydraulic system is connected
Portion is connected using quick-release connector.
It can be seen from the above technical scheme that the vibration hydraulic system of amphibious excavator provided by the utility model
Including：The main pump of output services pressure oil；Export the pioneer pump of pilot pressure oil；Drive the left front hoofing part of the near front wheel walking
Device；Drive the left back travel driving unit of left rear wheel walking；Travel driving unit before the right side for driving off-front wheel to walk；Driving is right
Travel driving unit behind the right side of rear-wheel walking；It connects main pump and left front travel driving unit, left back travel driving unit, the right side moves ahead
Walk driving device, it is right after travel driving unit work valve group.
When work, the utility model is filled by hoofing part before left front travel driving unit, left back travel driving unit, the right side
Travel driving unit respectively drives the near front wheel, left rear wheel, off-front wheel and off hind wheel walking after setting, being right, realizes four-wheel drive, so
The required discharge capacity of torque needed for the speed reducer of every group of travel driving unit and motor is smaller, to reduce amphibious excavation
The volume of machine, alleviates weight, reduces energy consumption.
In addition, the vibration hydraulic system can have both been moved forward or back by one crawler belt of single movement to realize unilateral turning,
It can be walked forward by a crawler belt again and another crawler belt is walked backward to realize pivot turn, due to being four-wheel drive, turned
Curved more flexible, walking ability is stronger.Meanwhile four-wheel drives simultaneously when starting, the starting performance of amphibious excavator is good.
The utility model additionally provides a kind of amphibious excavator, including vibration hydraulic system, the walking hydraulic pressure system
System is any of the above-described kind of vibration hydraulic system, since above-mentioned vibration hydraulic system has said effect, has above-mentioned walking hydraulic
The amphibious excavator of system has same effect, and therefore, this article will not repeat them here.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the structural schematic diagram of the vibration hydraulic system of amphibious excavator provided by the embodiment of the utility model；
Fig. 2 is the schematic diagram of the vibration hydraulic system of amphibious excavator provided by the embodiment of the utility model.
Specific embodiment
The utility model embodiment provides a kind of amphibious excavator and its vibration hydraulic system, reduces speed reducer
The required discharge capacity of required torque and motor alleviates weight to reduce the volume of amphibious excavator, reduces energy
Consumption.
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Attached drawing 1-2 is please referred to, the vibration hydraulic system of amphibious excavator provided by the embodiment of the utility model includes：
The main pump of output services pressure oil；Export the pioneer pump 12 of pilot pressure oil；Drive the left front hoofing part dress of the near front wheel walking
Set 01；Drive the left back travel driving unit 02 of left rear wheel walking；Travel driving unit 03 before the right side for driving off-front wheel to walk；It drives
Travel driving unit 04 behind the right side of dynamic off hind wheel walking；It connects main pump and left front travel driving unit 01, left back hoofing part fills
Travel driving unit 03 before setting 02, being right, it is right after travel driving unit 04 work valve group.
Above-mentioned the near front wheel, left rear wheel are located on the crawler belt in left side, and off-front wheel and off hind wheel are located on the crawler belt on right side.
When work, the utility model is driven by left front travel driving unit 01, left back travel driving unit 02, right preceding walking
Travel driving unit 04 respectively drives the near front wheel, left rear wheel, off-front wheel and off hind wheel walking behind dynamic device 03, the right side, realizes four-wheel
Driving, so the required discharge capacity of torque needed for the speed reducer 1 of every set travel driving unit and motor is smaller, to reduce water
The volume of the amphibious excavator in land, alleviates weight, reduces energy consumption.
In addition, the vibration hydraulic system can have both been moved forward or back by one crawler belt of single movement to realize unilateral turning,
It can be walked forward by a crawler belt again and another crawler belt is walked backward to realize pivot turn, due to being four-wheel drive, turned
Curved more flexible, walking ability is stronger.Meanwhile four-wheel drives simultaneously when starting, the starting performance of amphibious excavator is good.
Preferably, before left front travel driving unit 01, left back travel driving unit 02, the right side behind travel driving unit 03, the right side
The structure of travel driving unit 04 is all the same, includes hydraulic motor 3, speed reducer 1 and balanced valve 4, is provided with system on speed reducer 1
Dynamic device 2.When downwards when driving, balanced valve 4 can be reliably prevented amphibious excavator hypervelocity and glide, to guarantee water on the slope
The amphibious excavator in land drives safely on the slope.
The travel driving unit of four wheels is identical, makes amphibious chassis of dredging machine symmetrical configuration, stability is more preferable.When
So, the structure of above-mentioned driving device can be with difference, or other structure types.
In specific embodiment, main pump includes left pump 13 and right pump 11.The utility model is driven using double pump, when
When one of them pumps out problem, other side traveling wheel is not influenced, and functional reliability is preferable.And the same side shares a pump,
Structure is simpler.Certainly, above-mentioned main pump also may include four pumps, respectively drive four travel driving units.
As shown in Fig. 2, work valve group includes speed switching solenoid valve 14, the pilot pressure port of oil inlet and pioneer pump 12
Connection, oil outlet are connect with the Variable Control mouth of four hydraulic motors 3；For providing the system for opening left front travel driving unit 01
The left decompression logic valve group 5 of the brake oil of the brake 2 of dynamic device 2 and left back travel driving unit 02；The right side is opened for providing
The right decompression logic of the brake oil of the brake 2 of travel driving unit 04 after the brake 2 of preceding travel driving unit 03 and the right side
Valve group；Left lateral walks main valve piece 7, and oil inlet is connect with the oil feeding line of left pump 13, oil outlet and left decompression logic valve group 5 and a left side
Two balanced valves 4 of side connect；Right lateral walks main valve piece 10, and oil inlet is connect with the oil feeding line of right pump 11, oil outlet and the right side
Depressurize two balanced valves 4 connection on logic valve group and right side.
It should be noted that the oil circuit of aforementioned four driving device is connect by centre revolving joint 6 with system, i.e., left,
Working oil, motor leakage oil and the variable pilot control oil of right hydraulic motor 3 are connected by centre revolving joint 6 with system.
Left and right walking is respectively controlled by a piece of main valve piece.Forward and backward left travel driving unit respectively configures a set of band brake 2
Speed reducer 1 and hydraulic motor 3, forward and backward right travel driving unit respectively configure the speed reducer 1 and hydraulic motor of a set of band brake 2
3.Two-way balanced valve 4 is mounted directly at each hydraulic motor 3, left and right walking respectively has one to be used to open driving speed reducer 1
The decompression logic valve group of brake 2.
When normally travel, left and right walking walks main valve piece 7, right lateral by left lateral respectively respectively by left pump 13,11 fuel feeding of right pump
It walks main valve piece 10 and reaches left side by centre revolving joint 6 and balanced valve 4 and left decompression logic valve group 5, right decompression logic valve group
Two sets of travel driving units and right side two sets of travel driving units.Two decompression logic valve groups open brake for providing
2 brake oil, left and right walking braking are respectively controlled by a decompression logic valve group, i.e. the front and back wheel braking of side is subtracted by one simultaneously
Press the control of logic valve group.
Must be electric by speed switching solenoid valve 14, pilot control oil can be guided into a left side respectively by centre revolving joint 6
The Variable Control mouth of the hydraulic motor 3 of right front and back four carries out motor variable, to realize the high low speed switching of walking.
To further simplify the structure, left decompression logic valve group 5 is identical with the structure of right decompression logic valve group, includes：
For selecting the shuttle valve of the high pressure oil of walking working oil path；The logic switch valve being connect with brake 2；It is arranged in shuttle valve and logic
Pressure reducing valve between switching valve.
The principle of two decompression logic valve groups is to select the high pressure oil of walking working oil path by shuttle valve first, then pass through
Pressure reducing valve, then through logic switch valve simultaneously reach side walking front and back wheel brake 2, open simultaneously braking.Wherein increase
Logic switch valve can guarantee only when the driving pressure of motor reaches certain value, it is sufficient to switch the hydraulic control logic switch valve
When, parking brake 2 is just unclamped, in order to avoid in appearance in an instant " car slipping " phenomenon of release.
Preferably, pressure reducing valve has overflow port；On the braking oil return line of left decompression logic valve group 5 and right decompression logic valve group
It is provided with throttle orifice.Pressure reducing valve can guarantee having impact load that braking oil pressure moment is caused to have when increasing with relief function
Pressure limiting relief function prevents excessively high 1 brake block of damage speed reducer of braking oil pressure, and depressurizes logic valve group and realize system by throttle orifice
Dynamic meter out, so that the slow oil return of brake 2, reaches gradual braking effect；So that opening and closing the brake of speed reducer 1
It is more stable and reliable when 2.
Work valve group further includes walking the straight line walking control that main valve piece 7 is connected to the oil feeding line of right pump 11 for controlling left lateral
The pilot pressure port of solenoid valve 9 processed, pioneer pump 12 is connect with the oil inlet of straight line travelling control solenoid valve 9；Straight line travelling control
The pilot control opening of valve block 8, straight line travel control valve piece 8 is connect with the oil outlet of straight line travelling control solenoid valve 9.
When straight line is walked, straight line travelling control solenoid valve 9 must be electric, passes through straight line by the pilot pressure oil that pioneer pump 12 provides
Travelling control solenoid valve 9 reaches the pilot control opening of straight line travel control valve piece 8, and straight line travel control valve piece 8 is switched to
Working position, at this time it is left pump 13 to the left walking 7 oil feeding line of main valve piece be cut off, it is right pump 11 simultaneously by left lateral walk main valve piece 7, the right side
Walking main valve piece 10, arrives separately at left and right travel driving unit, realizes amphibious excavator straight line walking.
The utility model can be exchanged into a pump list by straight line travelling control solenoid valve 9 and straight line travel control valve piece 8
Left and right walking is solely controlled, realizes straight line walking function, straight line walking better reliability.Certainly, the utility model can also pass through
The synchronization for controlling left pump 13, right pump 11, realizes the straight line walking function on smooth-riding surface.
Preferably, left pump 13 and right pump 11 are minus flow pump.Correspondingly, walking main valve piece uses inverted flux control valve,
Respectively by a minus flow pump control, the discharge capacity by controlling hydraulic motor 3 can realize that the high low speed of walking switches for left and right walking.It is negative
Flow oil liquid pressure increases, and the discharge capacity for controlling pump reduces, conversely, minus flow oil liquid pressure reduces, the discharge capacity for controlling pump increases.
Under standby mode, left lateral walks main valve piece 7, right lateral walk main valve piece 10 middle position bypass hydraulic oil it is logical by minus flow
Road, position bypass passageways are maximum in main valve at this time, and minus flow pressure oil stream amount and pressure are maximum, respectively feedback to left pump 13 and right pump
11, so that the discharge capacity of two main pumps reaches minimum.Opposite, when the pilot handle of left and right walking leaves middle position, guide oil
Left lateral walks main valve piece 7, right lateral walks main valve piece 10 and leaves middle position for aL1/bL1, aR1/bR1 control, so that middle position bypass passageways reduce,
And then minus flow pressure oil stream amount and pressure are gradually reduced, after feedback to left pump 13 and right pump 11, the discharge capacity of two main pumps of control becomes
Greatly, output flow becomes larger, to meet speed of travel demand.
In vibration hydraulic system provided by the above embodiment, the dismounting of the fluid pressure line of each component of vibration hydraulic system is connected
Portion is connected using quick-release connector.Fluid pressure line of walking is connected using soft, hard tube, and marshalling is beautiful, is adopted at structure dismounting position
With quick-release connector, facilitates pipeline to dismount and can prevent oil liquid leakage from causing environmental pollution.
The utility model embodiment additionally provides a kind of amphibious excavator, including vibration hydraulic system, walks hydraulic
System is the vibration hydraulic system that provides of any of the above-described embodiment, torque needed for reducing speed reducer 1 and motor it is required
Discharge capacity alleviates weight to reduce the volume of amphibious excavator, reduces energy consumption, its advantage is that hydraulic by walking
System bring specifically please refers to relevant part in above-described embodiment, and details are not described herein again.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of vibration hydraulic system of amphibious excavator, which is characterized in that including：
The main pump of output services pressure oil；
Export the pioneer pump (12) of pilot pressure oil；
Drive the left front travel driving unit (01) of the near front wheel walking；
Drive the left back travel driving unit (02) of left rear wheel walking；
Travel driving unit (03) before the right side for driving off-front wheel to walk；
Travel driving unit (04) behind the right side for driving off hind wheel to walk；
Before connecting the main pump and the left front travel driving unit (01), the left back travel driving unit (02), the right side
The work valve group of travel driving unit (04) behind travel driving unit (03), the right side.
2. vibration hydraulic system according to claim 1, which is characterized in that the left front travel driving unit (01), institute
State left back travel driving unit (02), it is described it is right before travel driving unit (03), it is described it is right after travel driving unit (04) knot
Structure is all the same, includes hydraulic motor (3), speed reducer (1) and balanced valve (4), is provided with brake on the speed reducer (1)
(2)。
3. vibration hydraulic system according to claim 2, which is characterized in that the main pump includes left pump (13) and right pump
(11)。
4. vibration hydraulic system according to claim 3, which is characterized in that the work valve group includes：
Speed switching solenoid valve (14), oil inlet are connect with the pilot pressure port of the pioneer pump (12), oil outlet and four
The Variable Control mouth of hydraulic motor (3) connects；
For providing the brake (2) and the left back travel driving unit of opening the left front travel driving unit (01)
(02) the left decompression logic valve group (5) of the brake oil of brake (2)；
For provide open it is described it is right before travel driving unit (03) brake (2) and it is described it is right after travel driving unit
(04) the right decompression logic valve group of the brake oil of brake (2)；
Left lateral is walked main valve piece (7), and oil inlet is connect with the oil feeding line of the left pump (13), and oil outlet is patrolled with the left decompression
Collect two balanced valves (4) connection in valve group (5) and left side；
Right lateral is walked main valve piece (10), and oil inlet is connect with the oil feeding line of the right pump (11), oil outlet and the right decompression
The connection of two balanced valves (4) on logic valve group and right side.
5. vibration hydraulic system according to claim 4, which is characterized in that the left decompression logic valve group (5) and described
The structure of right decompression logic valve group is identical, includes：
For selecting the shuttle valve of the high pressure oil of walking working oil path；
The logic switch valve being connect with the brake (2)；
Pressure reducing valve between the shuttle valve and the logic switch valve is set.
6. vibration hydraulic system according to claim 5, which is characterized in that the pressure reducing valve has overflow port；The left side
Throttle orifice is provided on the braking oil return line of decompression logic valve group (5) and the right decompression logic valve group.
7. vibration hydraulic system according to claim 4, which is characterized in that the work valve group further includes：
The straight line travelling control electromagnetism that main valve piece (7) is connected to the oil feeding line of the right pump (11) is walked for controlling the left lateral
Valve (9), the pilot pressure port of the pioneer pump (12) are connect with the oil inlet of the straight line travelling control solenoid valve (9)；
Straight line travel control valve piece (8), the pilot control opening of the straight line travel control valve piece (8) and the straight line travelling control
The oil outlet of solenoid valve (9) connects.
8. vibration hydraulic system according to claim 3, which is characterized in that the left pump (13) and the right pump (11) are equal
Be negative flow pump.
9. vibration hydraulic system according to claim 1-8, which is characterized in that connect the vibration hydraulic system
The dismounting portion of the fluid pressure line of each component is connected using quick-release connector.
10. a kind of amphibious excavator, including vibration hydraulic system, which is characterized in that the vibration hydraulic system is as weighed
Benefit requires the described in any item vibration hydraulic systems of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820292991.9U CN208152129U (en) | 2018-03-01 | 2018-03-01 | A kind of amphibious excavator and its vibration hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820292991.9U CN208152129U (en) | 2018-03-01 | 2018-03-01 | A kind of amphibious excavator and its vibration hydraulic system |
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| Publication Number | Publication Date |
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| CN208152129U true CN208152129U (en) | 2018-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179782A (en) * | 2018-03-01 | 2018-06-19 | 北京中车重工机械有限公司 | A kind of amphibious excavator and its vibration hydraulic system |
-
2018
- 2018-03-01 CN CN201820292991.9U patent/CN208152129U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179782A (en) * | 2018-03-01 | 2018-06-19 | 北京中车重工机械有限公司 | A kind of amphibious excavator and its vibration hydraulic system |
| CN108179782B (en) * | 2018-03-01 | 2023-04-18 | 北京中车重工机械有限公司 | Amphibious excavator and walking hydraulic system thereof |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei New Direction Intelligent Equipment Co.,Ltd. Assignor: BEIJING CRRC HEAVY INDUSTRY MECHANICS Co.,Ltd. Contract record no.: X2023110000057 Denomination of utility model: A amphibious excavator and its walking hydraulic system Granted publication date: 20181127 License type: Exclusive License Record date: 20230420 |