CN106931002B - Two way ferry bus latch bridge hydraulic system - Google Patents
Two way ferry bus latch bridge hydraulic system Download PDFInfo
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- CN106931002B CN106931002B CN201511032959.4A CN201511032959A CN106931002B CN 106931002 B CN106931002 B CN 106931002B CN 201511032959 A CN201511032959 A CN 201511032959A CN 106931002 B CN106931002 B CN 106931002B
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- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims description 17
- 238000004880 explosion Methods 0.000 claims description 17
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 31
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000013589 supplement Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
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- 238000012423 maintenance Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 238000003745 diagnosis Methods 0.000 description 2
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/004—Fluid pressure supply failure
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of two way ferry bus latch bridge hydraulic system, including oil supply mechanism, latch bridge circuit, latch bridge solenoid directional control valve and pressure controller；Oil supply mechanism includes power source, hydraulic pump and electromagnetic clutch；Hydraulic pump is communicated in power source to form a transmission chain；Electromagnetic clutch can open and close to be set on transmission chain, to be switched on or switched off transmission chain；Latch bridge circuit includes latch bridge pressure piping and latch bridge oil return line, is respectively communicated between hydraulic pump and Liang Zu latch bridges mechanism；Latch bridge solenoid directional control valve is set on latch bridge pressure piping, selectively to one of Liang Zu latch bridges mechanism fuel feeding；For pressure controller between hydraulic pump and latch bridge solenoid directional control valve, pressure controller can export on-off model, to control the keying of electromagnetic clutch according to the loine pressure in latch bridge circuit to electromagnetic clutch.The configuration of the present invention is simple, solving the problems, such as the hydraulic parts such as accumulator, radiator, installation space is limited on ferry-boat vehicle carriage and stringing is difficult.
Description
Technical field
The present invention relates to ferry bus technical fields, in particular to a kind of latch bridge hydraulic pressure system of two way ferry bus
System.
Background technology
Airport ferry push picks boarding and the passenger that disembarks for travelling to and fro between terminal and remote seat in the plane aircraft, it is suitable for
The station level ground and other places of each Civil Aviation Airport.Airport ferry push vehicle body overall length generally at 14 meters or so, wheelbase at 7.1 meters or so,
Turning diameter is more than 25 meters, and airpark place space is limited, and when ferry bus backward going has difficulty.For
Smaller airport, two way ferry bus are more suitble to its smaller traffic space since there are two driving heads for its tool.Driver
When needing to turn around in driving procedure, it need to only be driven in another driving head.The appearance of two way ferry bus effectively solves
The problem of airport ferry push turning radius of having determined is big, difficulty.
Two way ferry bus has two sets control loops, is located at the front and tail portion of vehicle, commonly referred to as A with
B heads, wherein also known as A is main driver side, B are copilot side.Current double end ferry bus from driving, turn to, braking and lock
The technical solution that the major functions such as bridge are realized divides, and is divided into full hydraulic drive and partial function hydraulic-driven.Existing two way
Ferry bus mainly uses partial function hydraulic driving mode, i.e. latch bridge function and power-assisted steering function to be realized by hydraulic system,
He is partly that machinery or air-channel system are realized.Airport ferry push is fully loaded with quality generally at 20 tons or so, and travel speed generally exists
20km/h~50km/h.
The latch bridge function of existing hydraulic system mainly can be turned to freely by the vehicle bridge of driver side where driver,
The vehicle bridge of another driver side is locked just by hydraulic cylinder by hydraulic system and both sides tire is made to be kept under certain hydraulic pressure
Vertical with vehicle bridge axis, tire keeps linear motion.
In the latch bridge hydraulic system of existing two way ferry bus, hydraulic pump and power source (including engine, motor
Deng) connection type predominantly be rigidly connected, i.e., in such a way that flange-face coupling or spline transition axle sleeve etc. are attached.This
Kind rigid connection requires input shaft and output shaft concentricity high, cooperation precision and installation accuracy requirement height, driving section
The lubricating requirement of position is high, and connector is easily caused in the frequent start-stop hydraulic system that either pressure frequently changes or input is defeated
Shaft abrasion is until transmission failure.
Invention content
A primary object of the present invention is to overcome at least one defect of the above-mentioned prior art, and providing one kind can keep away
Exempt from the two way ferry bus latch bridge hydraulic system of installation requirement height, lubricating difficulties and pump shaft problem easy to wear.
For achieving the above object, the present invention adopts the following technical scheme that：
According to an aspect of the present invention, a kind of two way ferry bus latch bridge hydraulic system, the two way are provided
Ferry bus includes two vehicle bridge for being set to its front and back side and the Liang Zu latch bridges mechanism that can lock just described two vehicle bridge respectively, institute
It includes oil supply mechanism, latch bridge circuit, latch bridge solenoid directional control valve and pressure control to state two way ferry bus latch bridge hydraulic system
Device；The oil supply mechanism includes power source, hydraulic pump and electromagnetic clutch；The hydraulic pump is communicated in the power source to be formed
One transmission chain；The electromagnetic clutch can open and close to be set on the transmission chain, to be switched on or switched off the transmission chain；The lock
Bridge loop includes latch bridge pressure piping and latch bridge oil return line, is respectively communicated in the hydraulic pump and Liang Zu latch bridges mechanism
Between；The latch bridge solenoid directional control valve is set on the latch bridge pressure piping, selectively its to Liang Zu latch bridges mechanism
One of fuel feeding；The pressure controller is set on the latch bridge pressure piping, and positioned at the hydraulic pump and latch bridge electricity
Between magnetic reversal valve, the pressure controller can be defeated to the electromagnetic clutch according to the loine pressure in the latch bridge circuit
Go out on-off model, to control the keying of the electromagnetic clutch.
One of embodiment according to the present invention, the two way ferry bus latch bridge hydraulic system further includes unidirectional
Valve；The check valve is set on the latch bridge pressure piping, and between the hydraulic pump and the pressure controller；Its
In, the check valve is being connected from the hydraulic pump on the direction of the pressure controller, is normal in the opposite direction
It closes.
One of embodiment according to the present invention, the latch bridge solenoid directional control valve are the solenoid directional control valve with positioning.
One of embodiment according to the present invention, the two way ferry bus latch bridge hydraulic system further includes pressure
Warning device；The pressure warning unit is set to the latch bridge pressure piping, to measure the latch bridge in the pressure controller
The pressure value in circuit is alarmed when less than a lower safety limit pressure value.
One of embodiment according to the present invention, the two way ferry bus latch bridge hydraulic system further includes meeting an urgent need
Hydraulic system；The emergency hydraulic system includes emergent oil pump and emergent solenoid valve；The emergent solenoid valve can open and close to be connected to
Between the oil supply mechanism and the latch bridge circuit, make the emergent oil pump to latch bridge circuit fuel feeding.
One of embodiment according to the present invention, the two way ferry bus latch bridge hydraulic system further includes explosion-proof
Pipe device；The explosion-proof pipe device is set to the latch bridge pressure piping, and positioned at the latch bridge pressure piping and the latch bridge machine
The connectivity part of structure, when the pressure value of the latch bridge pressure piping is less than an explosion stack threshold pression value, the explosion-proof pipe device is cut
Break the latch bridge pressure piping.
One of embodiment according to the present invention, latch bridge mechanism described in every group includes two latch bridge oil cylinders, with respectively
Two wheels at the just described vehicle bridge both ends of lock, the latch bridge pressure piping have four two level branches, four two level branches
It is respectively communicated in four latch bridge oil cylinders.
One of embodiment according to the present invention, each two level branch road of the latch bridge pressure piping, is all provided with
There is the explosion stack device, and each explosion-proof pipe device is located at the company of corresponding the two level branch and the latch bridge oil cylinder
Logical place, it is corresponding when the pressure value of any bar two level branch of the latch bridge pressure piping is less than the explosion stack threshold pression value
The explosion-proof pipe device cut off the two level branch.
One of embodiment according to the present invention, the explosion-proof pipe device include solenoid valve and pressure switch；
The solenoid valve selectively communicates with or cuts off the latch bridge pressure piping；The pressure switch can control the electromagnetism
Valve, when the pressure value of the latch bridge pressure piping is less than the explosion stack threshold pression value, described in the pressure switch control
Solenoid valve cuts off the latch bridge pressure piping.
One of embodiment according to the present invention, the two way ferry bus latch bridge hydraulic system further includes explosion-proof
Pipe experimental provision；The explosion stack experimental provision be set to the latch bridge pressure piping, and positioned at the explosion-proof pipe device with it is described
Between latch bridge mechanism, the explosion stack experimental provision includes experiment fuel tank and shut-off valve；The experiment fuel tank passes through an experiment tube
Road is communicated in the latch bridge pressure piping；The shut-off valve is set to the experiment pipeline, described to selectively turn on or cut off
Test pipeline.
As shown from the above technical solution, the advantages of two way ferry bus latch bridge hydraulic system proposed by the present invention and actively
Effect is：
The present invention is by using programmable pressure controller and electromagnetic clutch, instead of existing two way ferry bus liquid
Rigidly connect between the accumulator charging valve, accumulator, pressure switch, radiator, gear pump and the engine that are used in pressure system
The elements such as the hub splines connect.Based on this structure, electromagnetic clutch is adjusted according to the on-off model that pressure controller exports
Connection between working condition, the i.e. output shaft of power source and the pump shaft of hydraulic pump is to be flexible coupling, only replenishment system pressure when,
Electromagnetic clutch just makes hydraulic pressure pump startup run well.By above structure, hydraulic pump shuts down within the most of the time, turns
Speed is zero, not output flow and pressure, and system heat generation amount is reduced, i.e., power output is zero, has good energy-saving effect.Together
When, the flexible connection structure between the output shaft of power source and the pump shaft of hydraulic pump can effectively solve the problem that present in rigid connection
The problem that installation requirement is high, lubricating difficulties and pump shaft are easy to wear.The configuration of the present invention is simple, it is few using Hydraulic Elements, simplify hydraulic pressure
System control principle, solving the hydraulic parts such as accumulator, radiator, installation space is limited on ferry-boat vehicle carriage and stringing is difficult
The problem of.
Description of the drawings
The following detailed description to the preferred embodiment of the present invention, various mesh of the invention are considered in conjunction with the accompanying drawings
Mark, feature and advantage will become apparent.Attached drawing is only the exemplary diagram of the present invention, is not necessarily to paint in proportion
System.In the accompanying drawings, same reference numeral always shows same or similar component.Wherein：
Fig. 1 is that a kind of system of two way ferry bus latch bridge hydraulic system shown according to an illustrative embodiments is shown
It is intended to；
Fig. 2 is a kind of valve block case of two way ferry bus latch bridge hydraulic system shown according to an illustrative embodiments
Structural schematic diagram；
Fig. 3 is a kind of valve block case of two way ferry bus latch bridge hydraulic system shown according to an illustrative embodiments
Vertical view.
Wherein, the reference numerals are as follows：
10. vehicle bridge；20. latch bridge oil cylinder；11. engine；21. latch bridge solenoid directional control valve；221. solenoid valve；222. pressure after
Electric appliance；241. pressure controller；242. buzzer；25. check valve；26. hydraulic pump；3. electromagnetic clutch；42. emergent oil pump；
43. emergent solenoid valve；5. valve block case；51. side plate.
Specific implementation mode
Embodying the exemplary embodiments of feature of present invention and advantage will describe in detail in the following description.It should be understood that this
Invention can have various variations in different embodiments, neither depart from the scope of the present invention, and it is therein explanation and
Diagram is inherently illustrative, rather than to limit the present invention.
In being described below the different illustrative embodiments to the present invention, carried out with reference to attached drawing, the attached drawing is formed
The part of the present invention, and the exemplary knot of difference for many aspects that the present invention can be achieved wherein is shown by way of example
Structure, system and step.It should be understood that can use component, structure, exemplary means, system and step other specified schemes, and
And structural and functional modification can be carried out without departing from the scope of the invention.Although moreover, can be used in this specification
Term " between ", "upper", etc. the different example features and element of the present invention are described, but these terms are in this article only
For convenient, for example, with reference to the accompanying drawings described in exemplary direction.Any content in this specification is not necessarily to be construed that needs
The specific three dimensional direction of structure is just fallen within the scope of the present invention.
It should be noted that in exemplary description below, each numerical value unit is carried out in the form of word or number
Illustrate, such as pressure unit's megapascal (MPa), chronomere minute (min), second (s), parasang rice (m), millimeter (mm), speed
Unit kilometer per hour (km/h) and volume unit's liter (L) etc. are spent, does not limit the application of the present invention in other embodiments.
One of present invention illustrative embodiments are further described with reference to the accompanying drawings.
Refering to fig. 1, a kind of two way ferry bus latch bridge hydraulic system of present embodiment is representatively illustrated in Fig. 1
The system schematic of (hereinafter referred to as latch bridge hydraulic system).In the present embodiment, which can be applied to double
Into the hydraulic system of traveling ferry bus.Two way ferry bus tool there are two driver side, respectively a i.e. main driving side with
B i.e. copilot side, the also known as front side of two way ferry bus and rear side, the side where each driver side all has one
A vehicle bridge 10 (front side vehicle bridge is usually steering and driving axle, and rear side vehicle bridge is usually steeraxle), each vehicle bridge 10 is equipped with latch bridge
Mechanism.Specifically, for the latch bridge mechanism in a vehicle bridge 10, including two wheel positions of the vehicle bridge both sides are respectively arranged on
On two latch bridge oil cylinders 20.Latch bridge oil cylinder 20 is for locking the just corresponding wheel in the side, i.e. latch bridge mechanism lock just vehicle bridge 10.When
Driver when driving for a and one of b, then locked just by the hydraulic pressure of latch bridge mechanism, tire by other side vehicle bridge 10
Keep linear motion.
As shown in Figure 1, in the present embodiment, which can be used in two way ferry bus both sides vehicle bridge
Latch bridge.The latch bridge hydraulic system includes mainly oil supply mechanism, latch bridge circuit, latch bridge solenoid directional control valve 21, pressure controller
241, check valve 25, explosion-proof pipe device, explosion stack experimental provision, pressure warning unit and emergency hydraulic system.
As shown in Figure 1, in the present embodiment, oil supply mechanism include mainly engine 11, hydraulic pump 26 and electromagnetism from
Clutch 3.Wherein, which is the power source of the oil supply mechanism, and usually has power output shaft.The hydraulic pump 26 is connected to
In engine 11 to form a transmission chain, and hydraulic pump 26 usually has pump shaft.The electromagnetic clutch 3 can open and close to be set to transmission
On chain, to be switched on or switched off transmission chain.Specifically, in the present embodiment, which can open and close to setting dynamic
Between power output shaft and pump shaft, i.e. the power output shaft of engine 11 and the pump shaft of hydraulic pump 26 is realized by electromagnetic clutch 3
It is flexible coupling.
As shown in Figure 1, in the present embodiment, latch bridge circuit includes mainly latch bridge pressure piping and latch bridge oil return line,
The two is connected between hydraulic pump 26 and Liang Zu latch bridges mechanism.Wherein, latch bridge pressure piping one end is communicated in oil supply mechanism
Hydraulic pump 26 so that engine 11 by hydraulic pump 26 to latch bridge pressure piping fuel feeding.The other end of latch bridge pressure piping point
It is not communicated in Liang Zu latch bridges mechanism.
As shown in Figure 1, in the present embodiment, pressure controller 241 is set on latch bridge pressure piping, and it is located at hydraulic pump
Between 26 and latch bridge solenoid directional control valve 21, pressure controller 241 can according to the different measured values of latch bridge circuit lines pressure, to
Electromagnetic clutch 3 exports multiple corresponding on-off models, to control the keying of electromagnetic clutch 3, that is, control engine 11 with
What is linked between hydraulic pump 26 is communicated in disconnection.
Hereinafter, in conjunction with a specific use example, electromagnetic clutch 3 is controlled to pressure controller in present embodiment 241
Substantially flow illustrates：
Wherein, for example, electromagnetic clutch 3 can select maximum output torque 55Nm, connect tooth form and start
The matched electromagnetic clutch of pump shaft tooth form of the power output shaft and hydraulic pump 26 of machine 11.Also, pressure controller 241 can select
With SPWF type electronic pressure controllers.The control principle and control flow of the pressure controller 241 be：By setting pressure control
The pressure value of device 241 realizes output switch parameter, to control electromagnetic clutch 3.Specifically, pressure controller 241
Such as three pressure values, respectively 7 megapascal, 9 megapascal and 15 megapascal can be set.When latch bridge hydraulic work system, when system pressure
When power reaches 15 megapascal, pressure controller 241 exports corresponding on-off model, so that electromagnetic clutch 3 is disconnected transmission chain, at this time
Hydraulic pump 26 stops operating, no flow and pressure output.Due to system oil liquid leakage etc., system pressure gradually reduces, when
When being reduced to 9 megapascal, pressure controller exports corresponding on-off model, so that electromagnetic clutch 3 is connected transmission chain, at this time hydraulic pressure
Pump 26 supplements pressure for latch bridge pressure piping, until system pressure gos up to 15 megapascal, when electromagnetic clutch 3 be again off transmission
Chain.
In addition, in the present embodiment, pressure warning unit is additionally provided on latch bridge pressure piping, specifically, when by
When hydraulic system fault causes pressure controller 241 to monitor that system pressure is less than the lower safety limit pressure value of 7 megapascal, pressure
Controller 241 exports corresponding on-off model, and the low indicator light of instrument board hydraulic system pressure is bright, such as a buzzer 242
Pressure warning unit starts to alarm, and prompts driver's hydraulic system pressure low, should be overhauled.
As shown in Figure 1, in the present embodiment, check valve 25 is arranged on latch bridge pressure piping, and it is located at hydraulic pump 26
Between pressure controller 241.The check valve 25 is being connected from hydraulic pump 26 on the direction of pressure controller 241, in phase
It is normally closed on anti-direction.Wherein, check valve 25 primarily serves the effect of pressure isolation, is pressed between hydraulic pump 26 and check valve 25
Power is 0, the initial pressure between check valve 25 and latch bridge oil cylinder 20, i.e., system worked well pressure is 15 megapascal.It needs to illustrate
, the description of above-mentioned pressure controller 241 and check valve 25 is merely illustrative in present embodiment, it is specific
Set-up mode and installation site can be adjusted flexibly according to actual needs.Also, can setting pressure controller 241, also may be used
Pressure controller 241 and check valve 25 are set simultaneously, are not limited with present embodiment.
From the above, the present invention is using programmable pressure controller 241 and electromagnetic clutch 3, instead of existing two-way row
Sail accumulator charging valve, accumulator, pressure switch, radiator, gear pump and the engine used in ferry-boat vehicle hydraulic system
Between the elements such as rigidly connected hub splines.Based on this structure, electromagnetic clutch 3 is exported according to pressure controller 241
On-off model adjusts working condition, i.e. connection between the output shaft of power source and the pump shaft of hydraulic pump is to be flexible coupling, only
When replenishment system pressure, electromagnetic clutch 3 just makes hydraulic pump 26 start normal operation.By above structure, hydraulic pump 26 is big
It shuts down in part-time, rotating speed zero, not output flow and pressure, system heat generation amount reduces, i.e., power output is zero, tool
There is good energy-saving effect.Meanwhile the flexible connection structure between the output shaft and the pump shaft of hydraulic pump 26 of power source, it can be effective
Solve the problems, such as that high installation requirement present in rigid connection, lubricating difficulties and pump shaft are easy to wear.
In addition, in existing hydraulic principle, accumulator charging valve self structure principle determine oil pump supplement pressure with
Pressure difference is 2 megapascal between off-load, which can not change, and it is that hydraulic system supplements pressure and off-load to lead to oil pump frequently.This
Invention is using programmed pressure controller 241 and electromagnetic clutch 3 so that hydraulic pump 26 is in two kinds of works of supplement pressure and stalling
Make to convert between state, the hydraulic pump 26 that programmable pressure controller 241 is set supplements pressure difference value between pressure and off-load
Can be such as 6 megapascal by program setting, hence it is evident that increase the time interval that hydraulic pump 26 supplements pressure, can effectively extend liquid
The service life of press pump 26.
As shown in Figure 1, in the present embodiment, two-position four-way electromagnetic switch of the latch bridge solenoid directional control valve 21 preferably with positioning
Corresponding electromagnet is kept as electricity when valve, left position or the work of right position, which actually plays double insurance
Effect avoids its case where cannot being maintained at working position after the positioning device failure of latch bridge solenoid directional control valve 21, at this time electromagnetism
Iron often-have-electricity, electromagnetic attraction make spool be maintained at working position, and also avoiding electrical malfunction leads to electromagnet dead electricity, cannot
The case where being maintained at working position, at this time positioning device so that spool is maintained at working position.The selection of above-mentioned latch bridge solenoid directional control valve 21,
Normal work position cannot be maintained at by avoiding the spool of the latch bridge solenoid directional control valve of existing double end ferry bus latch bridge hydraulic system, and
The problem of caused latch bridge hydraulic system fault and hydraulic pressure latch bridge pressure reduce suddenly.It in other embodiments, also can basis
Form is arranged in pipeline in latch bridge circuit, flexibly selects other kinds of solenoid directional control valve, but should the preferred electricity with positioning function
Magnetic reversal valve, is not limited thereto.
It should be noted that the preferred model of the two-position four-way of above-mentioned latch bridge solenoid directional control valve 21, mainly considers this implementation
The one of which preferable layout of latch bridge pressure piping in mode.Specifically, latch bridge pressure piping has and is respectively communicated in four
Four two level branches of a latch bridge oil cylinder 20, and it is communicated in a level-one branch corresponding to two two level branches of the same side vehicle bridge
Road, two level-one branches are respectively communicated on latch bridge solenoid directional control valve 21, and above-mentioned four two level branches, two level-one branches and
The pipeline being communicated between latch bridge solenoid directional control valve 21 and engine 11 has collectively constituted the major part of latch bridge pressure piping.
The latch bridge hydraulic system of existing ferry bus reduces suddenly mainly to be caused by following reason：Connect the sebific duct of latch bridge oil cylinder
Booster occurs, causes hydraulic oil liquid to be flowed out by booster side, latch bridge hydraulic system can not establish pressure (hydraulic cylinder extreme lower position
Usually 100 millimeters or so, be vehicle road clearance minimum position, and booster easily occurs for pipeline).Electric fault leads to H-type three
Four-way electromagnetic reversing valve (traditional double end ferry bus is all made of H-type three-position four-way electromagnetic directional valve) dead electricity, position drain charge in spool.Needle
To the above problem, as shown in Figure 1, in the present embodiment, explosion-proof pipe device is set to latch bridge pressure piping, and is located at latch bridge pressure
The connectivity part of pipeline and latch bridge mechanism, the i.e. connectivity part of each two level branch and each latch bridge oil cylinder 20 of latch bridge pressure piping.It is anti-
Pipe bursting apparatus includes solenoid valve 221 and pressure switch 222, and solenoid valve 221 is for selectively communicating with or cutting off latch bridge pressure
Pipeline, pressure switch 222 are less than an explosion stack threshold pression for controlling solenoid valve 221, the pressure value of latch bridge pressure piping
When being worth (such as 9 megapascal), pressure switch 222 controls solenoid valve 221 and cuts off latch bridge pressure piping.It should be noted that at this
In embodiment, latch bridge solenoid directional control valve 21 is preferably the two-position four-way solenoid directional control valve with positioning, i.e. latch bridge pressure piping exists
The punishment of latch bridge solenoid directional control valve 21 is two level-one branches, that is, four two level branches.The two-position four-way solenoid directional control valve has
Two current potentials, each current potential correspond to two level-one branches, with the latch bridge mechanism being respectively communicated to before and after ferry bus in side vehicle bridge 10.
In conclusion in the present embodiment, the quantity of explosion-proof pipe device is four groups, i.e. four solenoid valves 221 and four pressure after
Electric appliance 222 is respectively arranged at four two level branch roads.In other embodiments, also can with each latch bridge mechanism its
In the two level branch road that is connected to of latch bridge oil cylinder 20 one group of explosion-proof pipe device is set, or according to latch bridge pressure piping and latch bridge
Form is arranged in the other pipelines of mechanism junction, correspondingly changes the set-up mode of explosion-proof pipe device, is not limited thereto, and only needs
Meet the function that above-mentioned explosion stack is provided side vehicle bridge 10 before and after ferry bus.
As shown in Figure 1, in the present embodiment, explosion stack experimental provision is set on latch bridge pressure piping, and positioned at explosion-proof
Between pipe device and latch bridge mechanism.Wherein, explosion stack experimental provision includes experiment fuel tank and shut-off valve, and experiment fuel tank passes through one
Experiment pipeline is communicated in latch bridge pressure piping, and shut-off valve is set to experiment pipeline, to selectively turn on or cut off experiment pipeline.Needle
To above structure, the present invention devises booster and tests and carry out simulation booster to every two level branch, it is ensured that vehicle is prevented when driving
Pipe bursting apparatus can effectively prevent booster.By taking a wherein two level branch as an example, the schematic diagram for designing it explosion stack experiment can
It draws one section of experiment pipeline in the interface of latch bridge oil cylinder 20 and the two level branch with reference to figure 2 and is connect with shut-off valve, shut-off valve
Other end connection experiment fuel tank.After the two level branch reaches normal 15 megapascal of latch bridge pressure, shut-off valve is opened manually, and simulation should
Pipeline booster.The solenoid valve 221 of this two level branch road automatically cuts off the branch after booster.Latch bridge hydraulic pressure system in above-mentioned experiment
Normal latch bridge pressure of uniting is 15 megapascal, and 222 set pressure of pressure switch is 9 megapascal.The booster experiment in key parameter be
The pressore setting of pressure switch 222, general ideal state are after 2 seconds~3 seconds of generation booster, and the action of solenoid valve 221 is cut
Disconnected booster circuit.If pressure set points are excessively high, system may to generate accidentally booster dynamic because other reasons pressure reduction is to setting value
Make, actually booster does not occur for system.If pressure set points are too low, pressure is supplemented since hydraulic pump 26 is continuously system,
So that system pressure maintains the lower pressure set points or more, can not be measured (due to hydraulic pressure booster occurs for system
Pump 26 constantly supplements pressure for hydraulic system, and the pressure of hydraulic system is made to maintain lower setting value or more), then it may cause
No booster action fluid is most by booster effluent.
As shown in Figure 1, in the present embodiment, emergency hydraulic system includes mainly emergent oil pump 42 and emergent solenoid valve
43.Emergent solenoid valve 43 is connected to engine 11 and latch bridge circuit for can open and close to, and makes emergent oil pump 42 to latch bridge circuit fuel feeding.
Further, in order to avoid the influence that engine 11 breaks down to emergency hydraulic system, an emergency tank can also be set, with
Make emergent solenoid valve 43 can open and close to be connected to emergency tank and latch bridge circuit, makes emergent oil pump 42 to latch bridge circuit fuel feeding.At it
In his embodiment, other types also may be selected in each Hydraulic Elements in emergency hydraulic system, are not limited thereto.
By taking present embodiment as an example, when latch bridge hydraulic system failure leads to systemic breakdown, solenoid valve 43 of meeting an urgent need selects
It selects engine 11 or emergency tank and latch bridge circuit communication, and is supplied to latch bridge circuit, that is, latch bridge mechanism by emergent oil pump 42
Oil realizes latch bridge function of meeting an urgent need.Preferably, the communicating position in emergency line and latch bridge circuit is the pressure on latch bridge pressure piping
Position between position between compensation device and check valve 25, i.e. latch bridge solenoid directional control valve 21 and hydraulic pump 26.Emergent hydraulic pressure
The security risk of latch bridge failure when system solves vehicle trouble.
It should be understood that emergency hydraulic system is not limited in providing emergency guarantee for latch bridge hydraulic system.This is emergent
Hydraulic system can also be including power-assisted steering hydraulic system, other hydraulic systems offer of two way ferry bus is answered
The embodiment suddenly ensured.For example, can emergent solenoid valve 43 be selected by solenoid directional control valve, so as to selectively to above-mentioned each liquid
At least one of pressure system carries out emergent fuel feeding, i.e., provides emergent protect to each hydraulic system of two way ferry bus simultaneously
Barrier.
Further, cooperation representatively illustrates a kind of two way of present embodiment refering to Fig. 2 and Fig. 3 in Fig. 2
The structural schematic diagram of the valve block case 5 of ferry bus latch bridge hydraulic system, one kind that present embodiment is representatively illustrated in Fig. 3 are double
Understand have in Fig. 3 to the overlooking structure diagram of the valve block case 5 of traveling ferry bus latch bridge hydraulic system, and for the ease of observation
Body is the vertical view after the side plate 51 of valve block case 5 is unfolded.
As shown in Figures 2 and 3, in the present embodiment, two way ferry bus latch bridge hydraulic system proposed by the present invention
In part valve member and element, be mounted in a valve block case 5.Specifically, can be by the part liquid in above-mentioned hydraulic system
The elements such as pressure valve, hydraulic valve block, pressure controller 241 are installed in a manner of integrated installation in the valve block case 5, and part is main
Arrangements of components can be carried out according to installation site of the valve block case 5 on two way ferry bus, installation space or piping mode
It is adjusted flexibly.Debugging, fault diagnosis and the pipeline that this integrated arrangement is conducive to hydraulic system simplify, and are convenient for later stage hydraulic pressure
The maintenance maintenance of system effectively improves the working efficiency of maintenance personal.
However, it will be readily appreciated by those skilled in the art that the setting of above-mentioned valve block case is only the part valve member of the present invention
Or the one of which exemplary arrangement mode of element.Wherein, a main purpose of setting valve block case 5 is to facilitate the tune of system
Examination, fault diagnosis and repair.However, in order to achieve the above object and to valve block case 5 and its internal valve member arrangement to add,
The various ways such as deletion, merging, replacement are adjusted, all without departing from two way ferry bus latch bridge hydraulic pressure system proposed by the present invention
The range of the principle of system.For example, the present invention other illustrative embodiments in, can by some or all of above-mentioned valve member with
Integration mode is arranged on any position of the body construction of two way ferry bus, or is dispersedly arranged at other convenient for tune
On the position of examination and repair.
Example that is described in detail above and/or illustrating two way ferry bus latch bridge hydraulic system proposed by the present invention
Property embodiment.But embodiments of the present invention are not limited to particular implementation as described herein, on the contrary, each embodiment
Component part and/or step can be independent with other component parts as described herein and/or step and be used separately.One reality
The each component part and/or each step for applying mode also can be with the other component parts and/or step knot of other embodiment
It closes and uses.Introduce it is described here and/or diagram element/component part/wait whens, term "one", " one " and " above-mentioned "
Deng to indicate there are one or more elements/component part/etc..Term "comprising", " comprising " and " having " are indicating out
Put the meaning of formula being included and refer to element/component part/in addition to listing also may be present other than waiting other element/
Component part/etc..In addition, the term " first " and " second " etc. in claims and specification are only used as label, no
It is the numerical limit to its object.
Although according to different specific embodiments to two way ferry bus latch bridge hydraulic system proposed by the present invention into
Gone description, but it will be recognized by those skilled in the art can in the spirit and scope of the claims to the implementation of the present invention into
Row change.
Claims (7)
1. a kind of two way ferry bus latch bridge hydraulic system, the two way ferry bus includes be set to its front and back side two
Vehicle bridge (10) and the Liang Zu latch bridges mechanism that just described two vehicle bridge (10) can be locked respectively, the two way ferry bus latch bridge
Hydraulic system includes：
Oil supply mechanism, including：
Power source；
Hydraulic pump (26) is communicated in the power source to form a transmission chain；And
Electromagnetic clutch (3) can open and close to be set on the transmission chain, to be switched on or switched off the transmission chain；
Latch bridge circuit, including latch bridge pressure piping and latch bridge oil return line, be respectively communicated in the hydraulic pump (26) with it is described
Between Liang Zu latch bridges mechanism；
Latch bridge solenoid directional control valve (21) is set on the latch bridge pressure piping, selectively its to Liang Zu latch bridges mechanism
One of fuel feeding；
Pressure controller (241) is set on the latch bridge pressure piping, and positioned at the hydraulic pump (26) and the latch bridge electromagnetism
Between reversal valve (21), the pressure controller (241) can according to the loine pressure in the latch bridge circuit, to the electromagnetism from
Clutch (3) exports multiple switch amount signal, to control the keying of the electromagnetic clutch (3)；
Check valve (25) is set on the latch bridge pressure piping, and positioned at the hydraulic pump (26) and the pressure controller
(241) between, the check valve (25) is led from the hydraulic pump (26) on the direction of the pressure controller (241)
It is logical, it is normally closed in the opposite direction；And
Explosion-proof pipe device is set to the latch bridge pressure piping, and positioned at the company of the latch bridge pressure piping and the latch bridge mechanism
Logical place, when the pressure value of the latch bridge pressure piping is less than an explosion stack threshold pression value, described in the explosion-proof pipe device cut-out
Latch bridge pressure piping；
Wherein, latch bridge mechanism described in every group includes two latch bridge oil cylinders (20), to lock the two of just described vehicle bridge (10) both ends respectively
There are four two level branches, four two level branches to be respectively communicated in four locks for a wheel, the latch bridge pressure piping
Bridge oil cylinder (20).
2. two way ferry bus latch bridge hydraulic system according to claim 1, wherein the latch bridge solenoid directional control valve
(21) it is the solenoid directional control valve with positioning.
3. two way ferry bus latch bridge hydraulic system according to claim 1, further includes：
Pressure warning unit is set to the latch bridge pressure piping, to measure the latch bridge circuit in the pressure controller (241)
Pressure value, alarm when less than a lower safety limit pressure value.
4. two way ferry bus latch bridge hydraulic system according to claim 1, further includes：
Emergency hydraulic system, including：
Emergent oil pump (42)；And
Emergent solenoid valve (43), can open and close to be communicated between the oil supply mechanism and the latch bridge circuit, makes the emergency oil
(42) are pumped to latch bridge circuit fuel feeding.
5. two way ferry bus latch bridge hydraulic system according to claim 1, wherein the latch bridge pressure piping it is every
One two level branch road, is equipped with the explosion-proof pipe device, and each explosion-proof pipe device is located at the corresponding two level branch
The connectivity part on road and the latch bridge oil cylinder (20), the pressure value of any bar two level branch of the latch bridge pressure piping is less than described
When explosion stack threshold pression value, the corresponding explosion-proof pipe device cuts off the two level branch.
6. two way ferry bus latch bridge hydraulic system according to claim 5, wherein the explosion-proof pipe device includes：
Solenoid valve (221) selectively communicates with or cuts off the latch bridge pressure piping；And
Pressure switch (222) can control the solenoid valve (221), and the pressure value of the latch bridge pressure piping is less than described
When explosion stack threshold pression value, the pressure switch (222) controls the solenoid valve (221) and cuts off the latch bridge pressure pipe
Road.
7. two way ferry bus latch bridge hydraulic system according to claim 1, further includes：
Explosion stack experimental provision, is set to the latch bridge pressure piping, and positioned at the explosion-proof pipe device and the latch bridge mechanism it
Between, the explosion stack experimental provision includes：
Fuel tank is tested, the latch bridge pressure piping is communicated in by an experiment pipeline；And
Shut-off valve is set to the experiment pipeline, to selectively turn on or cut off the experiment pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511032959.4A CN106931002B (en) | 2015-12-31 | 2015-12-31 | Two way ferry bus latch bridge hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511032959.4A CN106931002B (en) | 2015-12-31 | 2015-12-31 | Two way ferry bus latch bridge hydraulic system |
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| CN106931002B true CN106931002B (en) | 2018-10-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108569157A (en) * | 2018-01-23 | 2018-09-25 | 中国国际海运集装箱(集团)股份有限公司 | The electronic ferry bus of bidirectional driving |
| CN108691849A (en) * | 2018-04-23 | 2018-10-23 | 马钢(集团)控股有限公司 | Emergency system after a kind of failure of construction machinery hydraulic system |
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| CN106931002A (en) | 2017-07-07 |
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Effective date of registration: 20210615 Address after: 102206 b4061, building 8, No. 97, Changping Road, Shahe Town, Changping District, Beijing (Changping Demonstration Park) Patentee after: XINFA AIRPORT EQUIPMENT Ltd. Patentee after: LANGFANG CIMC AIRPORT EQUIPMENT Co.,Ltd. Patentee after: SHENZHEN CIMC-TIANDA AIRPORT SUPPORT Co.,Ltd. Address before: 518067 CIMC R & D center, No. 2 Harbour Road, Shekou Industrial Zone, Guangdong, Shenzhen Patentee before: China International Marine Containers (Group) Co.,Ltd. Patentee before: XINFA AIRPORT EQUIPMENT Ltd. Patentee before: LANGFANG CIMC AIRPORT EQUIPMENT Co.,Ltd. Patentee before: SHENZHEN CIMC-TIANDA AIRPORT SUPPORT Co.,Ltd. |