CN208429068U - A kind of electri forklift full power hydraulic brake system - Google Patents
A kind of electri forklift full power hydraulic brake system Download PDFInfo
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- CN208429068U CN208429068U CN201820926403.2U CN201820926403U CN208429068U CN 208429068 U CN208429068 U CN 208429068U CN 201820926403 U CN201820926403 U CN 201820926403U CN 208429068 U CN208429068 U CN 208429068U
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Abstract
The utility model discloses a kind of electri forklift full power hydraulic brake systems, including hydraulic oil container and oil pump, the oil outlet of the oil pump is connected to the P mouth of braking prefill valve, the ACC mouth of the braking prefill valve is connected to the P1 of accumulator and dynamic braking valve mouth, PBR mouthfuls are connected to parking brake, T mouthfuls of connection hydraulic oil containers, COOL mouthfuls are connected to type wet drive axle by radiator；The P3 mouth of drive axle is connected to radiator, and P2 mouthfuls are connected to the F of dynamic braking valve mouth, and T2 mouthfuls are connected to hydraulic oil container, the brake pedal connection of the dynamic braking valve and electri forklift.The utility model solves the problems, such as that braking system reliability and drive safety present in the large-tonnage electric forklift of the prior art be not high, is obviously improved the braking reliability of electri forklift and drive safety, has very high practical value.
Description
Technical field
The utility model relates to fork truck braking technology fields, and in particular to a kind of large-tonnage electric forklift Full-hydraulic braking apparatus
System.
Background technique
For (battery) fork truck electronic to large-tonnage, by electri forklift cells and after being fully loaded with, weight is big is influenced,
For the safety for guaranteeing electri forklift traveling, it is desirable to provide a set of reliable braking system of individual secure.In addition large-tonnage is electronic
Fork truck can generate very big braking moment in braking, therefore type wet drive axle brake can generate many heats, thus greatly
The reliability of electri forklift braking is reduced greatly.On the other hand, the safety of its braking system of the electri forklift of the prior art is not
Height, driver cannot understand the working condition of braking system in time, cannot carry out in time accordingly to the braking system problem
Processing, greatly reduce the drive safety of electri forklift.Publication date is July 13, Publication No. in 2011
The Chinese patent literature of CN102120447A discloses a kind of and matching multifunctional wet brake forklift hydraulic system.This is
System includes oil pump, preferential flow divider valve, integrated valve block, accumulator, dynamic braking valve, parking brake, running brake and fuel tank.
The oil outlet of oil pump is communicated with the P of preferential flow divider valve mouth, and preferential flow divider valve has an import three outlets, wherein first outlet
It is divided into two-way, is communicated all the way with the P1 of integrated valve block mouth, another way is communicated with the Pz of dynamic braking valve mouth；Second outlet and fork
Vehicle equipment oil circuit communicates；Third outlet is divided into two-way, communicates all the way with forklift steering system, another way and integrated valve block
P2 mouthfuls communicate；Integrated valve block includes parking braking solenoid valve, check valve, locking releasing solenoid valve and check valve etc..System benefit
It is shunted with preferential flow divider valve, does not need in addition to provide a set of oil sources just and can solve the parking braking of wet type bridge and service brake oil sources is asked
Topic simplifies pipe-line system, reduces costs so that hydraulic system of working and braking system become an organic whole.But it should
System is only applicable to small tonnage fork car, is not suitable for the electri forklift of large-tonnage, is also making without solving large-tonnage electric forklift
Very big braking moment can be generated when dynamic, type wet drive axle brake can generate many heats and cause electri forklift braking can
By property substantially reduce and prior art electri forklift existing for drive safety problem.
Utility model content
The purpose of this utility model is reliable to solve braking system present in the large-tonnage electric forklift of the prior art
The not high problem of property, provides a kind of electri forklift full power hydraulic brake system, the large-tonnage that can effectively solve the prior art is electronic
Fork truck after fully loaded from it is great due to lead to that braking moment is larger, braking calorific value is big and cause what braking system reliability reduced to ask
Topic, greatly improves the braking reliability of electri forklift.
The utility model another object is that not high to solve the safety of electri forklift its braking system of the prior art
The problem of, a kind of electri forklift full power hydraulic brake system is provided, the electri forklift driver of the prior art can be effectively solved
The working condition that braking system cannot be understood in time, cannot perform corresponding processing the braking system problem in time and lead
The not high problem of the drive safety of electrical forklift is sent a telegraph, the drive safety of electri forklift is obviously improved.
The utility model technical solution used for the above purpose is a kind of electri forklift Full-hydraulic braking apparatus system
The oil outlet of system, including hydraulic oil container and oil pump, the oil pump is connected to the oil inlet P mouth of braking prefill valve, and the braking is filled
Liquid valve is equipped with multiple oil outlets, wherein the first oil outlet is ACC mouthfuls, ACC mouthfuls are connected to the P1 of accumulator and dynamic braking valve mouth,
T1 mouthfuls of connection hydraulic oil containers of oil outlet of dynamic braking valve；Second oil outlet is PBR mouthfuls, and PBR mouthfuls are connected to parking brake；The
Three oil outlets are T mouthfuls, T mouthfuls of connection hydraulic oil containers；4th oil outlet is COOL mouthfuls, and COOL mouthfuls are connected to wet type driving by radiator
Bridge, is equipped with hydraulic oil filter between radiator and drive axle, braking prefill valve be additionally provided with ACC mouthfuls it is the associated 5th fuel-displaced
Mouthful；The drive axle is set there are three hydraulic fluid port, is wherein connected to radiator for 3 mouthfuls of oil inlet P, 2 mouthfuls of high pressure oil oil inlet P and power system
The F mouth connection of dynamic valve, T2 mouthfuls of oil outlet are connected to hydraulic oil container, and the brake pedal of the dynamic braking valve and electri forklift connects
It connects.The utility model uses the mode of braking using wet type dynamic braking, and to solve, braking moment is big and radiator heat is big is asked
Topic, as the cooling cycle oil liquid of drive axle after being cooled down by radiator to hydraulic oil, for cooling down to drive axle,
Can effectively solve the large-tonnage electric forklift of the prior art after fully loaded from it is great due to lead to that braking moment is larger, braking fever
The problem of amount causes greatly braking system reliability to reduce.
Preferably, the 5th oil outlet is S mouthfuls, described S mouthfuls is connected to hydraulic oil container by ball valve.Work as electri forklift
It when needing to overhaul brake circuit because of relevant issues, needs to guarantee accumulator pressure release into safety at this time, at this moment by opening ball
Valve can carry out quick pressure releasing to accumulator, improve operating efficiency.
Preferably, the 4th oil outlet is equipped with temperature detect switch (TDS), temperature detect switch (TDS) connects the cooling fan on radiator.
When hydraulic fluid temperature is lower than the set temperature value of hydraulic oil temperature detect switch (TDS), the motor of cooling fan does not start, and hydraulic oil relies on
Natural circulation cooling；When hydraulic fluid temperature reaches the set temperature value of temperature detect switch (TDS), temperature detect switch (TDS) is connected at this time, and is passed through
Signal is controlled, Oil pump electrical machinery is rotated, recycles oil liquid, the cooling velocity of hydraulic oil is accelerated in the electrical power rotation of cooling fan.
Preferably, 3 mouthfuls of the oil inlet P of the drive axle is also connected to T3 mouthfuls of the oil inlet of check valve, check valve goes out
Mouth connection hydraulic oil container.When the cooling oil path of drive axle blocks the case where, and when drive axle internal pressure being caused to increase, this
When check valve open under the effect of the pressure, oil liquid can flow to hydraulic oil container by check valve, to protect drive axle against damages.
Preferably, 2 mouthfuls of the high pressure oil inlet P of the drive axle is also connected with braking light switch and power cut switch.
When braking the setup pressure value of oil liquid pressure value arrival brake lamp switch, brake lamp switch closure, brake lamp is lighted；With dynamic
Dynamic braking valve continues to step on, and when braking oil pressure force value increases to the setup pressure value of power cut switch, power cut is opened at this time
It closes and closes, the movable motor by controller to electri forklift powers off, and protects movable motor.
Preferably, the braking prefill valve be equipped with ACC mouthful associated MACC mouthfuls and AM mouthful, MACC mouthfuls of connection storage
Energy device filling liquid signaling switch, AM mouthfuls of connection accumulator low pressure warning switches.Brake the MACC mouth turn-on accumulator filling liquid of prefill valve
Signaling switch, for controlling solenoid valve and operation of oil pump as accumulator filling liquid；Connector accumulator low pressure warning switch at AM mouthfuls is used
Whether meet the needs of electri forklift normal brake application in detection energy storage pressure value.
Preferably, the pressure set points of the accumulator filling liquid signaling switch are 11.2-12.8MPa, accumulator low pressure
The pressure set points of alarm switch are lower than the pressure set points 1.55-2.45MPa of accumulator filling liquid signaling switch.
Preferably, the braking prefill valve be equipped with PBR mouthful associated LPBR mouthfuls and MPBR mouthful, it is described LPBR mouthfuls connect
Parking braking pressure switch, the pressure set points of parking braking pressure switch are higher than the pressure value that parking brake is opened, described
MPBR mouth be reserved pressure tap.Parking braking pressure switch is connected at LPBR mouthfuls, for detecting and prompting braking filling liquid indirectly
Whether the parking braking control valve SV1 in valve is normally opened and closed, so that whether detection parking brake is normally opened and closed indirectly.Work as oil circuit
When upper pressure value reaches the setup pressure value of park brake switch, parking braking pressure switch sends a signal to controller, and leads to
It crosses controller to show parking braking ring off signal in bridge instrumentation, electri forklift parking brake unlocks at this time, electronic
Fork truck can start；And MPBR mouthfuls are reserved pressure tap, the analysis detection after facilitating the later period to break down.
The utility model is directed to the characteristics of electri forklift, and the use of solenoid electric valve is increased in entire braking system,
And shown the working condition of electri forklift braking system in driver's cabin by controlling route, fully understand driver
Its working condition, so that the electri forklift driver for effectively solving the prior art cannot be timely using corresponding counter-measure
The working condition for solving braking system, cannot perform corresponding processing the braking system problem in time and lead to electri forklift
The not high problem of drive safety, the entire braking system of electri forklift can be made safer, intelligence is convenient and energy saving,
It is obviously improved the drive safety of electri forklift.
Preferably, the input end of the oil pump is equipped with oil-suction oil filter.
The beneficial effects of the utility model are:
1, the hydraulic wet braking mode to be matched using accumulator, dynamic braking valve, type wet drive axle, in addition to hydraulic
The circulating cooling of oil liquid, can effectively solve large-tonnage electric forklift after fully loaded from it is great due to cause braking moment larger, make
The big problem of dynamic calorific value, the reliability for braking electri forklift greatly improve, and the service life of related elements extends；In accumulation of energy
The use of accumulator low pressure warning switch is added on device oil circuit, the variation of pressure value in accumulator can be made, quickly fed back to
Electri forklift driver, to guarantee the safety of electri forklift traveling；Accumulator filling liquid signaling switch is added, it can be intelligently fast
The control of speed is thus more energy efficient to the filling liquid of accumulator, convenient, reliably.
2, using the opening and closing of solenoid valve control parking braking control valve, and cooperate the use of parking braking pressure switch, it can
The change value of pressure of action message and parking braking pipeline that parking brake turns on or off directly is fed back to electricity
Electrical forklift driver it is possible thereby to guarantee the safety of electri forklift parking, while making easy to operate.
3, ball valve is accessed at accumulator, can be accumulator quick pressure releasing, and it is convenient when electri forklift overhauls to increase
Property, greatly improve safety.
4, on drive axle brake oil in-line, power cut switch is added, when electri forklift is braked and generates brake pressure,
It is switched by power cut and issues signal cut movable motor power supply to controller, protect movable motor, saved electric energy, make electronic
Fork truck is safer, energy saving and reliable.
5, check valve is added at drive axle cooling oil path oil inlet, radiates oil circuit oil inlet because the generations such as foreign matter are stifled in drive axle
When back pressure occurs in plug, pressure release can be bypassed by check valve, protects brake, eliminated braking hidden danger, guaranteed the safety of braking.
6, temperature detect switch (TDS) is added on drive axle cooling oil oil circuit, row controls cooling fan motor at feedback signal, makes to cool down
The switch of fan motor is automatically controlled according to the height of hydraulic fluid temperature, thus makes the control of cooling oil temperature more energy efficient, more intelligent.
7, the functions such as the control of accumulator filling liquid, parking braking control are integrated in a valve, may be implemented accordingly to control
Integrated, intelligent and facilitation, while simplifying the layout of fluid pressure line, save internal installation space, reduce liquid
The quantity and type for pressing element, reduce overall cost.
Detailed description of the invention
Fig. 1 is a kind of hydraulic system principle figure of the utility model electri forklift full power hydraulic brake system；
Fig. 2 is a kind of hydraulic schematic diagram of the utility model braking prefill valve；
Fig. 3 is the pressure switch logic chart based on energy storage pressure in the utility model hydraulic system；
Fig. 4 is the pressure switch logic chart based on hydraulic fluid temperature in the utility model hydraulic system.
In figure: 1. hydraulic oil containers, 2. oil-suction oil filters, 3. oil pumps, 4. braking prefill valves, 5. ball valves, 6. accumulator filling liquids
Signaling switch, 7. accumulators, 8. accumulator low pressure warning switches, 9. parking brake, 10. parking braking pressure switches, 11. is dynamic
Dynamic braking valve, 12. braking light switch, 13. power cuts switch, 14. drive axles, 15. check valves, 16. hydraulic oil filters,
17. radiator, 18. temperature detect switch (TDS)s.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing being more specifically described to the technical solution of the utility model.
Embodiment 1
In such as Fig. 1 embodiment 1 shown in Fig. 2, a kind of electri forklift full power hydraulic brake system, including hydraulic oil container 1
And oil pump 3, the input end of the oil pump are equipped with oil-suction oil filter 2, the oil outlet of oil pump and the oil inlet P mouth of braking prefill valve 4
Connection.The braking prefill valve is set there are five oil outlet, wherein the first oil outlet is ACC mouthfuls, ACC mouthfuls and accumulator 7 and power
The P1 mouth of brake valve 11 is connected to, and the brake pedal of dynamic braking valve and electri forklift connects and T1 mouthfuls of connection hydraulic oil of its oil outlet
Case；Braking prefill valve be additionally provided with ACC mouthfuls associated MACC mouthfuls and AM mouthful, the MACC mouthfuls of connection accumulator filling liquid signaling switch
6, AM mouthfuls of connection accumulator low pressure warning switches 8, the pressure set points of the accumulator filling liquid signaling switch are 11.2-
12.8MPa, the pressure set points of accumulator low pressure warning switch are lower than the pressure set points 1.55- of accumulator filling liquid signaling switch
2.45MPa.Second oil outlet is PBR mouthfuls, and PBR mouthfuls are connected to parking brake 9；Braking prefill valve is additionally provided with to be associated with PBR mouthfuls
LPBR mouth and MPBR mouthful, the LPBR mouthfuls of connection parking braking pressure switch 10, the pressure of parking braking pressure switch is set
Value is higher than the pressure value that parking brake is opened, and the MPBR mouth is reserved pressure tap.Third oil outlet is T mouthfuls, T mouthfuls of connections
Hydraulic oil container.4th oil outlet is COOL mouthfuls, and COOL mouthfuls are connected to type wet drive axle by radiator 17 and hydraulic oil filter 16
14, the 4th oil outlet is additionally provided with temperature detect switch (TDS) 18, and temperature detect switch (TDS) connects and controls the cooling fan on radiator.5th oil outlet
It is S mouthfuls, the S mouth is associated with ACC mouthfuls, and S mouthfuls are connected to hydraulic oil container by ball valve 5.
Type wet drive axle is set there are three hydraulic fluid port, is wherein connected to radiator for 3 mouthfuls of oil inlet P, 2 mouthfuls of high pressure oil oil inlet P and
The F mouth of dynamic braking valve is connected to, while 2 mouthfuls of high pressure oil inlet P also connect with braking light switch 12 and power cut switch 13；It drives
3 mouthfuls of the oil inlet P of dynamic bridge is also connected to T3 mouthful of the oil inlet of check valve 15, T2 mouthfuls of the oil outlet of drive axle and check valve out
Mouth is connected to hydraulic oil container.
When the electri forklift of the utility model is worked with full power hydraulic brake system, hydraulic oil enters braking filling liquid from oil pump 3
The P mouth of valve 4, the internal filled liquid function valve body UPCV1(through braking prefill valve 4 are shown in Fig. 2), it is 7 filling liquid of accumulator from ACC mouthfuls, when
The pressure value of accumulator 7 filling liquid signaling switch 6 setup pressure value (the present embodiment 12MPa) below when, accumulator filling liquid
Signaling switch 6 can generate signal to the controller of electri forklift, and issue control signal oil supply pump motor power supply by controller,
Oil pump feed is accumulator filling liquid.When due to factors such as failures, cause 7 pressure value of accumulator lower than accumulator low pressure warning switch
When 8 setup pressure value (the present embodiment 10MPa), accumulator low pressure warning switch 8 can send a signal to controller at this time, control
Device processed issues alarm signal and reminds electri forklift driver, and limits the speed of movable motor simultaneously (for tortoise speed)；Work as accumulator
When pressure value is normal, alarm signal is eliminated, restriction cancellation (see figure 3) of walking.When electri forklift because relevant issues are needed to braking
When oil circuit overhauls, needs 7 pressure release of accumulator guaranteeing safety at this time, ball valve 5 can be opened, for accumulator quick pressure releasing,
Improve operating efficiency.And the movement of electri forklift parking brake 9, it is by the electromagnetism inside accumulator 7 and braking prefill valve 4
Valve SV1 is controlled, and the pressure oil liquid inside accumulator 7 is that braking valve for vehicle 9 provides open power, and solenoid valve SV1 control comes
From the circulating direction of 7 pressure oil liquid of accumulator；Meet the demands such as braking, the situation that solenoid valve SV1 must not be electric in 7 pressure of accumulator
Under, 9 oil suction chamber of parking brake be connected to hydraulic oil container 1, due to 9 contained spring of parking brake act on, parking braking at this time
Device 9 is in close state, and electri forklift parking is locked, and electri forklift can not start, and parking braking is had in driver's cabin
Show signal；After electri forklift driver's operation-control switch makes solenoid valve SV1 obtain electric, so that accumulator 7 internal pressure oil
Liquid leads to the oil suction chamber of parking brake 9, after the active force for overcoming 9 contained spring of parking brake, so that parking brake 9 is beaten
It opens, parking brake unlocks at this time, and electri forklift can start.Braking valve for vehicle inside braking prefill valve 4 leads to parking
On the oil circuit of brake 9, LPBR mouthfuls and MPBR mouthfuls are connected to, connect park brake switch 10 at LPBR mouthfuls, for detecting indirectly
And prompt whether the parking braking control valve SV1 in braking prefill valve 4 is normally opened and closed, so that detection parking brake 9 is indirectly
No normal opening and closing；The pressure set points of this switch are slightly above the pressure value of the opening of parking brake 9, when pressure value arrives on this oil circuit
Up to park brake switch 10 setup pressure value when, parking braking pressure switch 10 can send a signal to controller, and pass through control
Parking braking ring off signal is shown in bridge instrumentation that electri forklift parking brake unlocks at this time, electri forklift by device processed
It can start；MPBR mouthfuls are reserved pressure tap, the analysis detection after facilitating the later period to break down.Inside braking prefill valve 4
Prefill valve UPCV1 is after 7 supercharging pressure of accumulator reaches setup pressure value, and the oil inlet from P mouthfuls leads to heat dissipation through COOL mouthfuls at this time
Device 17(is equipped with cooling fan) and hydraulic oil filter 16；This oil circuit is equipped with hydraulic oil temperature detect switch (TDS) 18, in hydraulic fluid temperature
Lower than hydraulic oil temperature detect switch (TDS) 18 set temperature value when, the motor of cooling fan does not start, and hydraulic oil is cooling to lean on Natural Circulation
It is cooling；When temperature reaches the set temperature value of temperature detect switch (TDS) 18, temperature detect switch (TDS) 18 is connected at this time, and is believed by relevant control
Number, Oil pump electrical machinery is rotated, oil liquid is recycled, the cooling (see figure 4) of hydraulic oil is accelerated in the electrical power rotation of cooling fan.
When type wet drive axle 14 is braked, dynamic braking valve 11 is stepped on, and brakes required high-voltage oil liquid from dynamic braking valve F
Mouth outflow, the P2 mouth for leading to drive axle flows into running brake, on this oil circuit, connects brake lamp switch 12 and power cut is opened
Close 13；When braking the setup pressure value of oil liquid pressure value arrival brake lamp switch 12, brake lamp switch 12 is closed, and brake lamp is bright
It rises；As dynamic braking valve 11 continues to step on, when braking oil pressure force value increases to the setup pressure value of power cut switch 13, this
When power cut switch 13 be closed, the movable motor by controller to electri forklift powers off, and protects movable motor.It is filled from braking
The oil liquid of the COOL mouth outflow of liquid valve 4 enters after the cooling effect of radiator and the filtration of hydraulic oil filter 16
It is flowed out to the P3 mouth of drive axle 14, and from the T2 of drive axle 14 mouth, to do circulating cooling for drive axle 14, in drive axle 14
Before P3 mouthfuls, check valve 14 is connected, when the cooling oil path of drive axle 14 blocks the case where, and causes to press inside drive axle 14
When power increases, check valve 15 is opened at this time, and oil liquid can lead to hydraulic oil container 1 by check valve 15, thus protect drive axle 14 from
Damage.
In addition to the implementation, in the range disclosed in claims of the utility model and specification, this is practical
Novel technical characteristic or technical data can be reselected and be combined, to constitute new embodiment, these are all these
Field technical staff is without carrying out what creative work can be realized, therefore the implementation that these the utility model are not described in
Mode also should be regarded as specific embodiment of the utility model and be within the protection scope of the utility model.
Claims (9)
1. a kind of electri forklift full power hydraulic brake system, including hydraulic oil container (1) and oil pump (3), characterized in that the oil pump
Oil outlet be connected to the oil inlet P mouth of braking prefill valve (4), the braking prefill valve is equipped with multiple oil outlets, wherein first
Oil outlet is ACC mouthfuls, and ACC mouthfuls are connected to the P1 mouth of accumulator (7) and dynamic braking valve (11), the oil outlet T1 of dynamic braking valve
Mouth connection hydraulic oil container；Second oil outlet is PBR mouthfuls, and PBR mouthfuls are connected to parking brake (9)；Third oil outlet is T mouthfuls, T mouthfuls
It is connected to hydraulic oil container；4th oil outlet is COOL mouthfuls, and COOL mouthfuls pass through radiator (17) connection type wet drive axle (14), radiator
Hydraulic oil filter (16) are equipped between drive axle, braking prefill valve is additionally provided with and ACC mouthfuls of associated 5th oil outlets；It is described
Drive axle is set there are three hydraulic fluid port, is wherein connected to radiator for 3 mouthfuls of oil inlet P, the F of 2 mouthfuls of high pressure oil oil inlet P and dynamic braking valve
Mouth connection, T2 mouthfuls of oil outlet are connected to hydraulic oil container, the brake pedal connection of the dynamic braking valve and electri forklift.
2. electri forklift full power hydraulic brake system according to claim 1, characterized in that the 5th oil outlet is
S mouthfuls, described S mouthfuls is connected to hydraulic oil container by ball valve (5).
3. the electri forklift full power hydraulic brake system according to claim 1, characterized in that the 4th oil outlet
Equipped with temperature detect switch (TDS) (18), temperature detect switch (TDS) connects the cooling fan on radiator.
4. the electri forklift full power hydraulic brake system according to claim 1, characterized in that the oil inlet of the drive axle
P3 mouthfuls of mouth is also connected to T3 mouthfuls of oil inlet of check valve (15), the outlet hydraulic oil container of check valve.
5. electri forklift full power hydraulic brake system according to claim 1, characterized in that the high pressure of the drive axle into
P2 mouthfuls of hydraulic fluid port is also connect with braking light switch (12) and power cut switch (13).
6. the electri forklift full power hydraulic brake system according to claim 1, characterized in that the braking prefill valve is set
Have with ACC mouthfuls associated MACC mouthfuls and AM mouthful, the MACC mouthfuls of connection accumulator filling liquid signaling switch (6), AM mouthfuls of connection accumulation of energys
Device low pressure warning switch (8).
7. electri forklift full power hydraulic brake system according to claim 6, characterized in that the accumulator filling liquid signal
The pressure set points of switch are 11.2-12.8MPa, and the pressure set points of accumulator low pressure warning switch are believed lower than accumulator filling liquid
Number switch pressure set points 1.55-2.45MPa.
8. electri forklift full power hydraulic brake system according to claim 1, characterized in that the braking prefill valve is equipped with
With PBR mouthfuls associated LPBR mouthfuls and MPBR mouthful, the LPBR mouthfuls of connection parking braking pressure switch (10), parking braking pressure is opened
The pressure set points of pass are higher than the pressure value that parking brake is opened, and the MPBR mouth is reserved pressure tap.
9. electri forklift full power hydraulic brake system according to claim 1, characterized in that the input end of the oil pump is set
There are oil-suction oil filter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926403.2U CN208429068U (en) | 2018-06-14 | 2018-06-14 | A kind of electri forklift full power hydraulic brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820926403.2U CN208429068U (en) | 2018-06-14 | 2018-06-14 | A kind of electri forklift full power hydraulic brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208429068U true CN208429068U (en) | 2019-01-25 |
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ID=65101543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820926403.2U Active CN208429068U (en) | 2018-06-14 | 2018-06-14 | A kind of electri forklift full power hydraulic brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208429068U (en) |
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2018
- 2018-06-14 CN CN201820926403.2U patent/CN208429068U/en active Active
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