CN205907000U - Take hydraulic system of forklift of hydraulic pressure helping hand braking - Google Patents
Take hydraulic system of forklift of hydraulic pressure helping hand braking Download PDFInfo
- Publication number
- CN205907000U CN205907000U CN201620654028.1U CN201620654028U CN205907000U CN 205907000 U CN205907000 U CN 205907000U CN 201620654028 U CN201620654028 U CN 201620654028U CN 205907000 U CN205907000 U CN 205907000U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- valve
- cylinder
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a take hydraulic system of forklift of hydraulic pressure helping hand braking, it holds the multiple unit valve of being connected to produce oil including the stopper and with the gear pump, the multiple unit valve respectively with tilting cylinder, rise to rise the hydro -cylinder and be connected, the hydraulic fluid port of stabilizing of multiple unit valve is connected with hydraulic pressure assist drive device's oil inlet, hydraulic pressure assist drive device's braking hydraulic fluid port and stopper are connected, and hydraulic pressure assist drive device's branch oil flow mouth and full hydraulic steering's oil inlet are connected, full hydraulic steering is connected with steering cylinder. This hydraulic system only uses a pumping source, has realized multiple functions such as the braking of fork truck hydraulic pressure helping hand, full hydrostatic steering, lift, slope, and the degree of integrating is higher, and the pipeline is simple, system energy saving, and adopt the braking of hydraulic pressure helping hand, and the reaction is sensitive, and brake force is less, and rapid operation and operating efficiency are high.
Description
Technical field
This utility model is related to forklift hydraulic system and in particular to a kind of forklift hydraulic system with hydraulic assisting brake.
Technical background
Brakes is fork truck safety traffic and is smoothed out the requisite device of operation, braking ability excellent
Bad, directly influence the service efficiency of fork truck.At present the hydraulic system of medium and small tonnage fork car and brakes be two kinds independent
System, and both systems adopt two kinds of different media: hydraulic oil and brake fluid.The most of drum-type people adopting of brakes
Dynamic braking, mainly includes the composition such as brake pedal, manual braking's master cylinder, braking oilcan and brake, although this configuration structure
Simply, but without power-assisted, brake pedal force is larger, and driver is harder in operation, causes high labor intensive, operation not to relax
Suitable.In addition, the forklift hydraulic system i.e. elevating function of fork truck to be realized, the turning function of fork truck also to be realized.Ask for above-mentioned
Topic, needs to design a kind of forklift hydraulic system with hydraulic assisting brake and solves this problem so as to fork truck can not only be met
The handling of hydraulic system require, and can also meet the requirement of braking system with hydraulic assisting force and steering, that is, realize fork truck dress
Unload, hydraulic assisting brake and hydro-steering function.
Utility model content
In order to solve the above problems, this utility model provides a kind of forklift hydraulic system with hydraulic assisting brake, makes fork
Car only realizes the Multi Loading and Unloading Functions such as hydraulic assisting brake, hydro-steering and lifting, inclination with a pumping source.
A kind of forklift hydraulic system with hydraulic assisting brake, including brake and many with what gear pump oil outlet end was connected
Road valve, described banked direction control valves is connected with dump ram, lift oil tank respectively, the stable hydraulic fluid port of described banked direction control valves and hydraulic booster mechanism
Oil-in connect, the braking hydraulic fluid port of described hydraulic booster mechanism is connected with brake, the shunting hydraulic fluid port of hydraulic booster mechanism and
The oil-in of all-hydraulic steering gear connects, and described all-hydraulic steering gear is connected with steering cylinder.
Scheme further, described hydraulic booster mechanism includes the two-position three way flow sequence valve being connected with its oil-in, institute
Two oil-outs stating two-position three way flow sequence valve are connected with the shunting hydraulic fluid port of hydraulic booster mechanism, two position three way directional control valve respectively
Connect；Described two position three way directional control valve is connected with power-assisted oil cylinder by ring shaped oil passage, and described power-assisted oil cylinder passes through piston rod and braking
Oil cylinder connects；The shoe cream room of described brake cylinder is connected with the braking hydraulic fluid port of described hydraulic booster mechanism.
Further scheme, one end of described piston rod is connected with the brake piston in brake cylinder rod chamber, separately
One end is connected with the boosting piston of the oil return intracavity located at power-assisted oil cylinder；Described ring shaped oil passage is the oil return connecting power-assisted oil cylinder
Chamber, rodless cavity and two position three way directional control valve.
Scheme, is linked together by connecting rod between described power-assisted oil cylinder and brake cylinder further.
Scheme, is provided with simultaneously between the braking hydraulic fluid port of the shoe cream room of described brake cylinder and described hydraulic booster mechanism further
The oil outlet one-way valve of connection and back pressure check valve.
Further scheme, the oil return opening of hydraulic booster mechanism and the oil return opening of all-hydraulic steering gear all pass through oil return threeway and
Hydraulic oil container connects；Described oil return threeway is connected with described shoe cream room by unidirectional Fill valve and carries out repairing；Described oil back chamber
It is connected with oil return threeway.
Scheme further, the oil-in of described banked direction control valves is connected with stable shunt valve, the oil-out of described stable shunt valve
It is divided into two-way, wherein leads up to diffluence pass check valve and be connected with the stable hydraulic fluid port of banked direction control valves, commutated with lifting respectively in another road
Valve, inclined reversing valve connect；The oil-out of described lifting reversal valve is connected with the lifting hydraulic fluid port of banked direction control valves, the liter of described banked direction control valves
Fall hydraulic fluid port is connected with described lift oil tank by governor valve；Described inclined reversing valve is connected with dump ram.
Scheme further, described governor valve is made up of speed limit choke valve in parallel and speed limit check valve, described lift oil tank
Oil inlet end be provided with explosion-proof valve.
Scheme further, is sequentially provided with steering relief valve and main safety valve in the middle of described stable shunt valve and gear pump；Institute
State between stable shunt valve and lifting reversal valve, between stable shunt valve and inclined reversing valve, be equipped with check valve；Described lifting
Reversal valve, inclined reversing valve are all connected with the oil return opening of banked direction control valves by oil return ring shaped oil passage.
Hydraulic system of the present utility model share a pumping source and realize hydraulic assisting brake, hydro-steering, lifting and
Anteversion and retroversion action, its detailed operation principle is as described below:
Hydraulic system of the present utility model share a pumping source and realize hydraulic assisting brake, hydro-steering, lifting and
Anteversion and retroversion action.I.e. when gear pump startup, hydraulic oil in fuel tank is imported multi-way control valve after oil absorption filter filtration
Oil-in, the oil-feed ring shaped oil passage through multi-way control valve is divided into two-way, wherein one tunnel supply lifting system after entering stable shunt valve
System and pitch system, another road is after shunting check valve by the stable hydraulic fluid port of multi-way control valve and hydraulic assisting brake mechanism
Oil-in connects, and that is, a part of hydraulic oil enters in all-hydraulic steering gear through two-position three way flow sequence valve, then through all-hydraulic turn
Flow back to formation loop in hydraulic oil container to oil return opening, the oil return threeway of device.During brake oil-feed, the valve of two position three way directional control valve
Hydraulic oil is imported in the rodless cavity of power-assisted oil cylinder in right position, two position three way directional control valve by core, and promotion boosting piston, brake piston will
Hydraulic oil in oil storage cylinder is derived, and imports in brake and carries out through its oil outlet one-way valve, the braking hydraulic fluid port of hydraulic booster mechanism
Braking, completes hydraulic assisting brake；During oil return, the valve element of two position three way directional control valve commutates to left position, the hydraulic oil in brake
Return and flow in hydraulic pressure servomechanism, enter in oil storage cylinder through return check valve, promote system in the presence of spring and hydraulic oil
Piston, boosting piston derive the hydraulic oil in the rodless cavity of power-assisted oil cylinder, flow back to hydraulic oil box-shaped through ring shaped oil passage and become back
Road.Now because brake piston returns under return spring effect, form vacuum in oil storage cylinder, through unidirectional Fill valve from oil return opening
Place's oil suction carries out repairing to oil storage cylinder, completes hydraulic assisting brake oil return repairing.
When wanting hydro-steering, the valve element of two-position three way flow sequence valve moves right, and hydraulic oil enters all-hydraulic turn
To in device, form loop with steering cylinder, the oil return of steering cylinder is flowed back to hydraulic oil container, completed hydro-steering action.
When elevating movement, hydraulic oil enters in lifting reversal valve, connects with governor valve through multi-way control valve, subsequently into
Lift oil tank, thus complete raising action；During oil return, lift oil tank declines under gravity, and hydraulic oil is through stop valve, limit
Fast valve and enter multi-way control valve, lifting reversal valve, ring shaped oil passage, return oil filter and flow back to fuel tank, complete down maneuver.
When wanting banking motion, hydraulic oil enters in inclined reversing valve, then the hypsokinesis hydraulic fluid port through multi-way control valve, lean forward oil
Mouth connects formation loop with the rod chamber of dump ram and rodless cavity respectively.Hydraulic oil enters the rod chamber of dump ram, and it is no
Hydraulic oil in rod cavity flows back to hydraulic oil container through the hydraulic fluid port that leans forward, ring shaped oil passage, return oil filter, completes backward motion and makees.Inclination is changed
Go to left position to valve, hydraulic oil enters the rodless cavity of dump ram, then the hydraulic oil of rod chamber through hypsokinesis hydraulic fluid port, ring shaped oil passage,
Return oil filter flows back to hydraulic oil container, completes forward swing.
So, the system compared with prior art has the advantages that following aspect
1st, this hydraulic system only with a pumping source it is achieved that truck hydraulic power brake, hydro-steering and lifting, inclination
Etc. Multi Loading and Unloading Functions, integration degree is higher, and pipeline is simple, energy saving of system；
2nd, this hydraulic system adopts hydraulic assisting brake, is quick on the draw, and brake force is less, and operator is laborsaving, work
Intensity is little, and operation comfort adds preferably, and working performance is high；
3rd, it is provided with check valve in the oil-feed oil duct of this hydraulic system, protecting against shock and anti-fluid flows backwards, improve system can
More preferable by property；And adopt monostable flow divider, hydraulic assisting brake and hydro-steering flow constant, work is more reliable and more stable,
Noise is little.
Brief description
Fig. 1 is this utility model hydraulic system principle figure；
The schematic diagram of Tu2Shi hydraulic booster mechanism.
In figure: 1- steering cylinder, 2- all-hydraulic steering gear, 3- hydraulic booster mechanism, 3-1 oil outlet one-way valve, 3-2 back pressure list
To valve, 3-3 brake cylinder, 3-31 shoe cream room, 3-32 brake piston；The unidirectional Fill valve of 3-4,3-5 power-assisted oil cylinder, 3-51 oil return
Chamber, 3-52 boosting piston, 3-53 rodless cavity；3-6 two position three way directional control valve, 3-7 ring shaped oil passage, 3-8 two-position three way flow order
Valve, 3-9 connecting rod, 3-10 piston rod；4- hydraulic oil container, 5- gear pump, 6- oil-suction oil filter, 7- return oil filter, 8- multichannel
Control valve, 8-1 inclined reversing valve, 8-2 check valve, 8-3 lifts reversal valve, 8-4 stable shunt valve, 8-5 diffluence pass check valve, 8-
6 steering relief valve, 8-7 main safety valve, 8-8 oil return ring shaped oil passage；9- dump ram, 10- lift oil tank, 11- explosion-proof valve, 12-
Governor valve, 12-1 speed limit choke valve, 12-2 speed limit check valve；13- brake, 14- oil return threeway.
Specific embodiment
As shown in figure 1, a kind of forklift hydraulic system with hydraulic assisting brake, including brake 13 and with gear pump 5
The banked direction control valves 8 that oil outlet end connects, described banked direction control valves 8 is connected with dump ram 9, lift oil tank 10 respectively, described banked direction control valves 8 steady
Stand oil mouth pf is connected with the oil-in p2 of hydraulic booster mechanism 3, the braking hydraulic fluid port br1 of described hydraulic booster mechanism 3 and brake
13 connections, the shunting hydraulic fluid port n of hydraulic booster mechanism 3 is connected with the oil-in p3 of all-hydraulic steering gear 2, described all-hydraulic steering gear
2 are connected with steering cylinder 1.
As shown in Fig. 2 hydraulic booster mechanism 3 includes the two-position three way flow sequence valve 3-8 being connected with its oil-in p2, institute
Two oil-outs stating two-position three way flow sequence valve 3-8 are commutated with the shunting hydraulic fluid port n of hydraulic booster mechanism 3, two-position three way respectively
Valve 3-6 connects；Described two position three way directional control valve 3-6 is connected with power-assisted oil cylinder 3-5 by ring shaped oil passage 3-7, described power-assisted oil cylinder
3-5 is connected with brake cylinder 3-3 by piston rod 3-10；The shoe cream room 3-31 of described brake cylinder 3-3 and described hydraulic booster
The braking hydraulic fluid port br1 of mechanism 3 connects.
Further scheme, one end of described piston rod 3-10 and the brake piston in brake cylinder 3-3 rod chamber
3-32 connects, the other end is connected with the boosting piston 3-52 in the oil back chamber 3-51 of power-assisted oil cylinder 3-5；Described ring shaped oil passage
3-7 is oil back chamber 3-51, rodless cavity 3-53 and the two position three way directional control valve 3-6 connecting power-assisted oil cylinder 3-5.
Scheme, is linked together by connecting rod 3-9 between described power-assisted oil cylinder 3-5 and brake cylinder 3-3 further.
Scheme further, the braking hydraulic fluid port of the shoe cream room 3-31 of described brake cylinder 3-3 and described hydraulic booster mechanism 3
It is provided with the oil outlet one-way valve 3-1 and back pressure check valve 3-2 of parallel connection between br1.
Scheme further, the oil return opening t2 of the hydraulic booster mechanism 3 and oil return opening t3 of all-hydraulic steering gear 2 is all by oil return
Threeway 14 is connected with hydraulic oil container 4；Described oil return threeway 14 by unidirectional Fill valve 3-4 be connected with described shoe cream room 3-31 into
Row repairing；Described oil back chamber 3-51 is connected with oil return threeway 14.
Scheme further, the oil-in p1 of described banked direction control valves 8 is connected with stable shunt valve 8-4, described stable shunt valve 8-4
Oil-out be divided into two-way, wherein lead up to diffluence pass check valve 8-5 and be connected with the stable hydraulic fluid port pf of banked direction control valves 8, Ling Yilu
It is connected with lifting reversal valve 8-3, inclined reversing valve 8-1 respectively；The oil-out of described lifting reversal valve 8-3 and the liter of banked direction control valves 8
Fall hydraulic fluid port a1 connects, and the lifting hydraulic fluid port a1 of described banked direction control valves 8 is connected with described lift oil tank 10 by governor valve 12；Described incline
Tiltedly reversal valve 8-1 is connected with dump ram 9.
Scheme further, described governor valve 12 is made up of speed limit choke valve 12-1 in parallel and speed limit check valve 12-2, institute
The oil inlet end stating lift oil tank 10 is provided with explosion-proof valve 11.
Scheme further, is sequentially provided with steering relief valve 8-6 and main peace in the middle of described stable shunt valve 8-4 and gear pump 5
Full valve 8-7；Between described stable shunt valve 8-4 and lifting reversal valve 8-3, between stable shunt valve 8-4 and inclined reversing valve 8-1
It is equipped with check valve 8-2；Described lifting reversal valve 8-3, inclined reversing valve 8-1 are all by oil return ring shaped oil passage 8-8 and banked direction control valves 8
Oil return opening t1 connect.
Hydraulic system of the present utility model share a pumping source and realize hydraulic assisting brake, hydro-steering, lifting and
Anteversion and retroversion action.I.e. when gear pump 5 starts, after hydraulic oil in fuel tank 4 is filtered, import multi-way control valve through oil absorption filter 6
8 oil-in p1, the oil-feed ring shaped oil passage through multi-way control valve 8 is divided into two-way after entering stable shunt valve 8-4, wherein one tunnel supplies
To lifting reversal valve 8-3 and inclined reversing valve 8-1, the stable hydraulic fluid port of multi-way control valve 8 is passed through through shunting check valve 8-5 in another road
Pf is connected with the oil-in p2 of hydraulic assisting brake mechanism 3.Its detailed operation principle is as follows:
1st, hydraulic assisting brake
During brakeless, the valve element of two-position three way flow sequence valve 3-8 moves right, its two oil-out respectively with shunting hydraulic fluid port
N, two position three way directional control valve 3-6 connect, the shunting hydraulic fluid port n through hydraulic booster mechanism 3 for a portion hydraulic oil, hydro-steering
The oil-in p3 of device 2 enters in all-hydraulic steering gear 2, then the oil return opening t3 through all-hydraulic steering gear 2, oil return threeway 14 and flow back to
Hydraulic oil container 4.When the valve element of two position three way directional control valve 3-6 is in right position, hydraulic oil is imported power-assisted by two position three way directional control valve 3-6
In the rodless cavity 3-53 of oil cylinder 3-5, boosting piston 3-52 is promoted to move to brake cylinder 3-3 direction, thus in brake cylinder 3-3
Brake piston 3-32 by oil storage cylinder 3-31 hydraulic oil derive, the braking through oil outlet one-way valve 3-1, hydraulic booster mechanism 3
Hydraulic fluid port br1 and import and be braked in brake 13, complete hydraulic assisting brake；When the valve element of two position three way directional control valve 3-6 changes
To during to left position, the hydraulic oil in brake 13 returns the braking hydraulic fluid port br1 flowing into hydraulic pressure servomechanism 3, pushes oil return open unidirectional
Valve 3-2 and enter in oil storage cylinder 3-31, in the presence of spring and hydraulic oil promote brake piston 3-32 to power-assisted oil cylinder 3-5 side
To movement, in power-assisted oil cylinder 3-5, boosting piston 3-52 derives the hydraulic oil in rodless cavity 3-53, is liquid through ring shaped oil passage 3-7(
The oil-out a2 through rodless cavity 3-53 for the force feed enters a3, b2 port of two position three way directional control valve 3-6, enters back into oil back chamber 3-51's
Oil-in b3), finally from the oil return opening t5 of oil back chamber 3-51, the oil return opening t2 of hydraulic booster mechanism 3, oil return threeway 14 and flow back to
Hydraulic oil container 4.Because brake piston 3-32 returns under return spring effect, make to form vacuum in oil storage cylinder 3-31, through unidirectional
Fill valve 3-4 oil suction at oil return opening t2 carries out repairing to oil storage cylinder 3-31, completes hydraulic assisting brake oil return repairing.
2nd, hydro-steering
The valve element of two-position three way flow sequence valve 3-8 moves right, its two oil-out respectively with shunting hydraulic fluid port n, two three
Logical reversal valve 3-6 connection, the shunting hydraulic fluid port n through hydraulic booster mechanism 3 for a portion hydraulic oil, the entering of all-hydraulic steering gear 2
Hydraulic fluid port p3 enters in all-hydraulic steering gear 2, forms loop through its left steering hydraulic fluid port l, right turn hydraulic fluid port r and steering cylinder 1, turns to
The oil return opening t3 through all-hydraulic steering gear 2 for the oil return of oil cylinder 1, oil return threeway 14 and flow back to hydraulic oil container 4, complete hydro-steering
Action.
3rd, jacking system
Hydraulic oil enters in lifting reversal valve 8-3, and now, in right position, hydraulic oil is through unidirectional for the valve element of lifting reversal valve 8-3
Valve 8-2 enters lifting reversal valve 8-3, and the lifting hydraulic fluid port a1 through multi-way control valve 8 is connected with governor valve 12, subsequently into raising oil
Cylinder 10, thus complete raising action；When lift reversal valve 8-3 valve element in left position when, lift oil tank 10 under gravity and
Decline, hydraulic oil enters the lifting hydraulic fluid port a1 of multi-way control valve 8 through stop valve 11, governor valve 12, by lifting reversal valve 8-
3rd, ring shaped oil passage 8-8, the oil return opening t1 of multi-way control valve 8, return oil filter 7 flow back to fuel tank 4, complete down maneuver.
4th, pitch system
Hydraulic oil enters in inclined reversing valve 8-1, and when inclined reversing valve 8-1 is in right position, check valve 8-2 opened by hydraulic oil
And enter in inclined reversing valve 8-1, then the hypsokinesis hydraulic fluid port a2 through multi-way control valve 8, lean forward hydraulic fluid port b2 respectively with dump ram 9
Rod chamber connects formation loop with rodless cavity.Hydraulic oil enters the rod chamber of dump ram 9, and the hydraulic oil in its rodless cavity is premenstrual
Incline hydraulic fluid port b2, ring shaped oil passage 8-8, the oil return opening t1 of multi-way control valve, return oil filter 7 flows back to hydraulic oil container 4, completes backward motion
Make.
When inclined reversing valve 8-1 is in left position, hydraulic oil is opened check valve 8-2 and is entered in inclined reversing valve 8-1, then warp
The hypsokinesis hydraulic fluid port a2 of multi-way control valve 8, the hydraulic fluid port b2 that leans forward connect and are formed back with the rod chamber of dump ram 9 and rodless cavity respectively
Road.Hydraulic oil enters the rodless cavity of dump ram 9, then the hydraulic oil of rod chamber is through hypsokinesis hydraulic fluid port a2, ring shaped oil passage 8-8, multichannel
The oil return opening t1 of control valve, return oil filter 7 flow back to hydraulic oil container 4, complete forward swing.
Above example is not limited only to protection domain of the present utility model, all based on basic thought of the present utility model
And modify or change broadly fall into protection domain of the present utility model.
Claims (9)
1. a kind of forklift hydraulic system with hydraulic assisting brake, including brake (13) and with gear pump (5) oil outlet end even
The banked direction control valves (8) connecing, described banked direction control valves (8) be connected with dump ram (9), lift oil tank (10) respectively it is characterised in that: described
The stable hydraulic fluid port of banked direction control valves (8) is connected with the oil-in of hydraulic booster mechanism (3), the brake oil of described hydraulic booster mechanism (3)
Mouth is connected with brake (13), and the shunting hydraulic fluid port of hydraulic booster mechanism (3) is connected with the oil-in of all-hydraulic steering gear (2), institute
State all-hydraulic steering gear (2) and be connected with steering cylinder (1).
2. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 1 it is characterised in that: described hydraulic pressure
Servomechanism (3) includes the two-position three way flow sequence valve (3-8) being connected with its oil-in, described two-position three way flow sequence valve
(3-8) two oil-outs are connected with the shunting hydraulic fluid port of hydraulic booster mechanism (3), two position three way directional control valve (3-6) respectively；Described two
Position three-way diverter valve (3-6) is connected with power-assisted oil cylinder (3-5) by ring shaped oil passage (3-7), and described power-assisted oil cylinder (3-5) passes through to live
Stopper rod (3-10) is connected with brake cylinder (3-3)；The shoe cream room (3-31) of described brake cylinder (3-3) and described hydraulic boost mechanical
The braking hydraulic fluid port of structure (3) connects.
3. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 2 it is characterised in that: described piston
One end of bar (3-10) is connected with the brake piston (3-32) in brake cylinder (3-3) rod chamber, the other end with located at helping
Boosting piston (3-52) in the oil back chamber (3-51) of power cylinder (3-5) connects；Described ring shaped oil passage (3-7) is to connect power-assisted oil
The oil back chamber (3-51) of cylinder (3-5), rodless cavity (3-53) and two position three way directional control valve (3-6).
4. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 2 it is characterised in that: described power-assisted
Linked together by connecting rod (3-9) between oil cylinder (3-5) and brake cylinder (3-3).
5. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 2 it is characterised in that: described braking
It is provided with parallel fuel-displaced unidirectional between the braking hydraulic fluid port of the shoe cream room (3-31) of oil cylinder (3-3) and described hydraulic booster mechanism (3)
Valve (3-1) and back pressure check valve (3-2).
6. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 3 it is characterised in that: described hydraulic pressure
The oil return opening of the oil return opening of servomechanism (3) and all-hydraulic steering gear (2) is all by oil return threeway (14) with hydraulic oil container (4) even
Connect；Described oil return threeway (14) is connected with described shoe cream room (3-31) by unidirectional Fill valve (3-4) and carries out repairing；Described time
Oil pocket (3-51) is connected with oil return threeway (14).
7. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 1 it is characterised in that: described multichannel
The oil-in of valve (8) is connected with stable shunt valve (8-4), and the oil-out of described stable shunt valve (8-4) is divided into two-way, and wherein one
Road is connected with the stable hydraulic fluid port of banked direction control valves (8) by diffluence pass check valve (8-5), another road respectively with lifting reversal valve (8-3),
Inclined reversing valve (8-1) connects；The oil-out of described lifting reversal valve (8-3) is connected with the lifting hydraulic fluid port of banked direction control valves (8), described
The lifting hydraulic fluid port (a1) of banked direction control valves (8) is connected with described lift oil tank (10) by governor valve (12)；Described inclined reversing valve
(8-1) it is connected with dump ram (9).
8. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 7 it is characterised in that: described speed limit
Valve (12) is made up of speed limit choke valve (12-1) in parallel and speed limit check valve (12-2), the oil inlet end of described lift oil tank (10)
It is provided with explosion-proof valve (11).
9. a kind of forklift hydraulic system with hydraulic assisting brake according to claim 7 it is characterised in that: described stable
It is sequentially provided with steering relief valve (8-6) and main safety valve (8-7) in the middle of flow divider (8-4) and gear pump (5)；Described stable shunting
Between valve (8-4) and lifting reversal valve (8-3), between stable shunt valve (8-4) and inclined reversing valve (8-1), it is equipped with check valve
(8-2)；Described lifting reversal valve (8-3), inclined reversing valve (8-1) are all by oil return ring shaped oil passage (8-8) and banked direction control valves (8)
Oil return opening connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654028.1U CN205907000U (en) | 2016-06-28 | 2016-06-28 | Take hydraulic system of forklift of hydraulic pressure helping hand braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654028.1U CN205907000U (en) | 2016-06-28 | 2016-06-28 | Take hydraulic system of forklift of hydraulic pressure helping hand braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205907000U true CN205907000U (en) | 2017-01-25 |
Family
ID=57812134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620654028.1U Active CN205907000U (en) | 2016-06-28 | 2016-06-28 | Take hydraulic system of forklift of hydraulic pressure helping hand braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205907000U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883691A (en) * | 2016-06-28 | 2016-08-24 | 安徽合力股份有限公司 | Forklift hydraulic system with hydraulic power-assisted brake |
| CN108561461A (en) * | 2018-04-09 | 2018-09-21 | 杭叉集团股份有限公司 | A kind of forklift hydraulic system of multifunctional unit |
| CN109052238A (en) * | 2018-08-29 | 2018-12-21 | 广州市广韬教学设备有限公司 | A kind of fluid power system of fork truck |
-
2016
- 2016-06-28 CN CN201620654028.1U patent/CN205907000U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883691A (en) * | 2016-06-28 | 2016-08-24 | 安徽合力股份有限公司 | Forklift hydraulic system with hydraulic power-assisted brake |
| CN108561461A (en) * | 2018-04-09 | 2018-09-21 | 杭叉集团股份有限公司 | A kind of forklift hydraulic system of multifunctional unit |
| CN108561461B (en) * | 2018-04-09 | 2020-03-27 | 杭叉集团股份有限公司 | Multifunctional integrated forklift hydraulic system |
| CN109052238A (en) * | 2018-08-29 | 2018-12-21 | 广州市广韬教学设备有限公司 | A kind of fluid power system of fork truck |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201923203U (en) | Hydraulic steering and brake circuit for two-bridge engineering machinery | |
| CN205907000U (en) | Take hydraulic system of forklift of hydraulic pressure helping hand braking | |
| CN205715015U (en) | A kind of hydraulic system possessing supertension fan-out capability | |
| CN203623654U (en) | Double insurance brake system for small-sized loader | |
| CN201769879U (en) | Large-tonnage forklift independent braking hydraulic system | |
| CN105883691B (en) | A kind of forklift hydraulic system with hydraulic assisting brake | |
| CN104401306B (en) | A kind of Large Electric wheel quarry tipper hydraulic braking controls integrated system | |
| CN104791311B (en) | A kind of engineering truck hydraulic moving control system | |
| CN110228774A (en) | A kind of fork truck and forklift door frame hydraulic system for lifting | |
| CN203717551U (en) | Power unit of pallet truck | |
| CN204587015U (en) | A kind of crawler type field machine fluid-link steering and brake integrated system | |
| CN205603166U (en) | Novel fork truck hydraulic system | |
| CN208454432U (en) | A kind of forklift hydraulic system that decline energy is recyclable | |
| CN107061388B (en) | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied | |
| CN203890013U (en) | Double-pump oil supply and energy recovery type forklift hydraulic system | |
| CN203770276U (en) | Double-way oil supply priority valve | |
| CN205906937U (en) | Single track loop wheel machine car hydraulic drive system | |
| CN205329745U (en) | Two operation mode control systems of leveler | |
| CN205130931U (en) | Chassis hydraulic drive system | |
| CN201169293Y (en) | Hydraulic steering lifting system | |
| CN211116892U (en) | Hydraulic control system of rice harvester | |
| CN100360354C (en) | Integrated hydraulic control unit of electronic stabilized programm of anti-locking system for car | |
| CN204041590U (en) | Forestry crane step-down multi-way valve and be provided with the leg control system of getting off of this valve | |
| CN202643255U (en) | Forward shift anti-impact hydraulic system of mast of reach fork lift truck | |
| CN202156400U (en) | Brake system of forklift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |