CN207633396U - Loading machine hydraulic system of working - Google Patents
Loading machine hydraulic system of working Download PDFInfo
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- CN207633396U CN207633396U CN201721277527.4U CN201721277527U CN207633396U CN 207633396 U CN207633396 U CN 207633396U CN 201721277527 U CN201721277527 U CN 201721277527U CN 207633396 U CN207633396 U CN 207633396U
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Abstract
The utility model discloses a kind of loading machine hydraulic system of working, belong to engineering machinery hydraulic technical field.Serious, the multi-functional defect for struggling against and automatically opening and vibrating that it solves that oil cylinder settling amount existing for conventional load machine hydraulic system in the prior art is big, swing arm jolts.Including main working oil path, guide's oil circuit, duplex pump and fuel tank, main working oil path includes multi-way valve, multi-functional bucket control cylinder, stable module accumulator, stable module, boom cylinder and rotary ink tank, and the left side oil outlet P1 of duplex pump and the oil inlet P 4 of multi-way valve connect；Hydraulic fluid port A6, B6 of rotating bucket connection valve are connect with the rod chamber of rotary ink tank and rodless cavity respectively, and hydraulic fluid port A5, B5 of swing arm connection valve are connect with the rod chamber of boom cylinder and rodless cavity respectively；Hydraulic fluid port A5, B5 of swing arm connection valve in multi-way valve are also connect with stable module respectively, and the hydraulic fluid port P5 of stable module is connect with stable module accumulator, and hydraulic fluid port T5 is connected to fuel tank.The utility model is mainly used on loading machine.
Description
Technical field：
The utility model belongs to engineering machinery hydraulic technical field, specifically, more particularly to a kind of loading machine working solution
Pressure system.
Background technology：
Loading machine is the most commonly used one of engineering machinery, is mainly used for spading operation and loading operation, for difference
Change complete machine, third union road can be installed additional according to the specific demand of client, and multipurpose bucket structure is exactly wherein more commonly used one kind
Special applications.Multi-functional bucket is used as a kind of special applications, and structure includes front bucket and back bucket two parts composition, front bucket and back bucket
The composite moves such as handling, carrying, clamping, shoveling may be implemented in folding.In view of above-mentioned need of work, the equipment of loading machine needs
Receipts bucket, lifting, discharging, decline and the action of specific demand are carried out, the above action is all by loader hydraulic job family
System is controlled and is realized.
In general, the hydraulic system of working of loading machine by duplex oil pump feed, is supplied to the main working oil path of equipment respectively
With pilot control oil circuit.Pass through the big flow of the main working oil path of the Small Flow Control of guide's oil circuit, in main working oil path, multichannel
Valve directly to swing arm, rotating bucket and multi-functional bucket control cylinder for hydraulic oil.
In practical application, travel over long distances and when transhipment, due to multi-way valve DFF Direct Fuel Feed, and swing arm attonity, front frame
And equipment, boom cylinder etc. can be considered rigid connection, be influenced by complete machine arrangement, pavement behavior, complete machine shaking of jolting is compared
Frequently, operating comfort reduces, and working efficiency also declines therewith.In multi-functional bucket in use, for realize multi-functional bucket front bucket with
The reliable in action of back bucket, the current generally use bidirectional hydraulic lock of hydraulic circuit carrys out the action of control cylinder, but works as multi-functional bucket
In high point, back bucket is easily automatically opened by dead weight, if the repairing of third connection oil cylinder is not in time, be will produce vacuum, is made hydraulic pressure
Check valve in lock is instantaneously closed, when operating pressure rising after be again turned on check valve, the process just will appear automatically open or
Person generates larger shock and vibration.When lifting operation, the settling amount of oil cylinder is also the index for easily causing to pay close attention to, and oil cylinder
The evaluation of settling amount is affected by multi-way valve quality and guide's oil circuit, casts aside multi-way valve self reason, existing host producer
In guide's oil circuit, the general control that pilot pressure is realized using pressure selection valve, in lifting, by oil cylinder effect of weight, pressure
Power selector valve is susceptible to a certain amount of leakage, and then influences sedimentation figureofmerit.
Invention content：
In order to solve, oil cylinder settling amount existing for conventional load machine hydraulic system of working in the prior art is big, carries over long distances
When swing arm jolt serious and multi-functional bucket the shortcomings that automatically opening and vibrating, the utility model provide one kind be different from it is existing
The loading machine hydraulic system of working of technology, failure rate is low, manipulation comfort is high, later maintenance cost is low, reliability and safety
Property increase.
To achieve the goals above, the utility model is realized using following technical scheme：
A kind of loading machine hydraulic system of working, including main working oil path, guide's oil circuit, duplex pump and fuel tank, the duplex
The oil inlet of pump is connected to fuel tank, and the left side oil outlet P1 of duplex pump is connect with main working oil path, the right side oil outlet of duplex pump
P2 is connect with guide's oil circuit, and the main working oil path includes multi-way valve, multi-functional bucket control cylinder, stable module accumulator, steady
Cover half block, boom cylinder and rotary ink tank, the left side oil outlet P1 of duplex pump and the oil inlet P 4 of multi-way valve connect；In multi-way valve
Multi-functional bucket connection valve hydraulic fluid port A4, B4 respectively with it is multi-functional bucket control cylinder rod chamber and rodless cavity connect, rotating bucket connection valve
Hydraulic fluid port A6, B6 connect respectively with the rod chamber of rotary ink tank and rodless cavity, swing arm join valve hydraulic fluid port A5, B5 respectively with swing arm oil
The rod chamber of cylinder is connected with rodless cavity；Hydraulic fluid port A5, B5 of swing arm connection valve in multi-way valve are also connect with stable module respectively, are stablized
The hydraulic fluid port P5 of module is connect with stable module accumulator, and hydraulic fluid port T5 is connected to fuel tank.
Further, the guide's oil circuit includes pilot control, small pilot valve and pilot valve, the right side oil outlet of duplex pump
The hydraulic fluid port P3 connections of P2 and pilot control, hydraulic fluid port P6 are connect with small pilot valve and pilot valve；Each actuator port of small pilot valve
A1, B1 send pressure signal to guide's hydraulic fluid port xA1, xB1 of multi-way valve respectively, each actuator port A2, B2 of pilot valve, A3,
B3 sends guide's hydraulic fluid port from pressure signal to multi-way valve xA2, xB2, xA3, xB3 respectively.
Further, the main working oil path includes balanced valve, A4, B4 points of the hydraulic fluid port of the multi-functional bucket connection valve in multi-way valve
It is not connected to the rod chamber of multi-functional bucket control cylinder and rodless cavity by oil circuit K1, K2 of balanced valve.
Further, the guide's oil circuit further includes oil filter and adjustable pollution discharge pipe device, the oil inlet and guide oil of oil filter
The hydraulic fluid port P6 connections in source, oil outlet are connect with small pilot valve and pilot valve respectively；Adjustable pollution discharge pipe device accesses on pilot control.
Further, the main working oil path further includes oil return filter core, the hydraulic fluid port T5 of stable module and the hydraulic fluid port of multi-way valve
The oil inlet of the interflow T3 access oil return filter core, the oil outlet of oil return filter core are connect with fuel tank.
Further, the multi-way valve is pilot control formula multi-way valve.
Compared with prior art, the utility model has the beneficial effects that：
1, increase stable module in loading machine hydraulic system of working, avoid jolting for swing arm, it is comfortable to improve manipulation
Property, increase operating efficiency；
2, increase balanced valve and control multi-functional bucket control cylinder, solve multi-functional bucket automatically open and vibration problem, carry
Operation quality is risen, the safety of equipment is increased, reduces the later maintenance cost of loading machine hydraulic system of working；
3, increase pilot control, optimize the sedimentation figureofmerit of oil cylinder, increase reliability and the safety of machine.
Description of the drawings：
Fig. 1 is the operation principle schematic diagram of the utility model.
In figure：1, duplex pump；2, pilot control；3, multi-way valve；4, oil return filter core；5, balanced valve；6, multi-functional bucket control
Oil cylinder；7, stable module accumulator；8, stable module；9, boom cylinder；10, rotary ink tank；11, oil filter；12, adjustable pollution discharge pipe
Device；13, small pilot valve；14, pilot valve；15, fuel tank；31, multi-functional bucket joins valve；32, rotating bucket joins valve；33, swing arm joins valve.
Specific implementation mode：
Below by specific embodiment and in conjunction with attached drawing, the utility model is described in further detail.
Embodiment 1：
As shown in Figure 1, a kind of loading machine hydraulic system of working, including main working oil path, guide's oil circuit, duplex pump 1 and oil
The oil inlet of case 15, duplex pump 1 is connected to fuel tank 15, and the left side oil outlet P1 of duplex pump 1 is connect with main working oil path, duplex pump
1 right side oil outlet P2 is connect with guide's oil circuit, and main working oil path includes multi-way valve 3, multi-functional bucket control cylinder 6, stable mode
Block accumulator 7, stable module 8, boom cylinder 9 and rotary ink tank 10, the left side oil outlet P1 of duplex pump 1 and multi-way valve 3 into
Hydraulic fluid port P4 connections；Hydraulic fluid port A4, B4 of multi-functional bucket connection valve 31 in multi-way valve 3 have bar with multi-functional bucket control cylinder 6 respectively
Chamber is connected with rodless cavity, and hydraulic fluid port A6, B6 of rotating bucket connection valve 32 are connect with the rod chamber of rotary ink tank 10 and rodless cavity respectively, swing arm
Hydraulic fluid port A5, B5 of connection valve 33 are connect with the rod chamber of boom cylinder 9 and rodless cavity respectively；Swing arm in multi-way valve 3 joins valve 33
Hydraulic fluid port A5, B5 are also connect with stable module 8 respectively, and the hydraulic fluid port P5 of stable module 8 is connect with stable module accumulator 7, hydraulic fluid port T5
It is connected to fuel tank 15.
Embodiment 2：
A kind of loading machine hydraulic system of working, guide's oil circuit include pilot control 2, small pilot valve 13 and pilot valve 14, double
The right side oil outlet P2 of connection pump 1 is connect with the hydraulic fluid port P3 of pilot control 2, and hydraulic fluid port P6 is connect with small pilot valve 13 and pilot valve 14；
Each actuator port A1, B1 of small pilot valve 13 send pressure signal, guide's hydraulic fluid port from guide to multi-way valve 3 xA1, xB1 respectively
Each actuator port A2, B2, A3, B3 of valve 14 send guide's hydraulic fluid port from pressure letter to multi-way valve 3 xA2, xB2, xA3, xB3 respectively
Number；Main working oil path includes balanced valve 5, and hydraulic fluid port A4, B4 of the multi-functional bucket connection valve 31 in multi-way valve 3 pass through balanced valve 5 respectively
Oil circuit K1, K2 with it is multi-functional bucket control cylinder 6 rod chamber and rodless cavity be connected to；Guide's oil circuit further includes oil filter 11 and elder generation
Lead accumulator 12, the oil inlet of oil filter 11 is connect with the hydraulic fluid port P6 of pilot control 2, oil outlet respectively with small pilot valve 13 and first
Pilot valve 14 connects；Adjustable pollution discharge pipe device 12 accesses on pilot control 2；Main working oil path further includes oil return filter core 4, stable module 8
The oil inlet of hydraulic fluid port T5 and the hydraulic fluid port T3 interflow access oil returns filter core 4 of multi-way valve 3, oil outlet and the fuel tank 15 of oil return filter core 4 connect
It connects；Multi-way valve 3 is pilot control formula multi-way valve.Other parts are same as Example 1.
The operation principle of the utility model is：
When travelling and transport over long distances, when manipulating pilot valve 14 to the downside positions A3, the oil suction from fuel tank 15 of duplex pump 1,
Fluid is flowed out through oil outlet P2, and fluid is transmitted to work after the hydraulic fluid port P3 of pilot control 2, hydraulic fluid port P6 and oil filter 11 successively
Hydraulic fluid port A3, and guide's hydraulic fluid port xA3 that fluid is transmitted to multi-way valve 3, the pressure of first oil diverting port xA3 are acted through actuator port A3
Under oil effect, the connection spool action of the swing arm of multi-way valve 3, fluid after the oil outlet P1 outflows of duplex pump 1, through multi-way valve 3 into
Hydraulic fluid port P4 and internal galleries, then the hydraulic fluid port B5 of slave arm connection valve 33 flow out, and are assigned to the rodless cavity of boom cylinder 9, dynamic being promoted
While arm oil cylinder 9, the hydraulic fluid port P5 through stable module 8 realizes the filling liquid to stable module accumulator 7；Reach stable module 8
After unlocking condition, the rodless cavity of boom cylinder 9 is connected to stable module accumulator 7, when boom cylinder 9 moves upwards, stable mode
Block accumulator 7 is to the rodless cavity fuel feeding of boom cylinder 9, and the rod chamber of boom cylinder 9 is through the direct oil returns of hydraulic fluid port A5；Boom cylinder 9
When moving downward, hydraulic fluid port P5 from the rodless cavity of boom cylinder 9 to stable module 8 again to 7 filling liquid of stable module accumulator, swing arm
The rod chamber of oil cylinder 9 flows into the fluid of no pressure；It so moves in circles, so that boom cylinder 9 is in quick condition, avoid swing arm
Jolt, promoted driver comfort.
When manipulating handle to the left side positions A1 of small pilot valve 13, fluid after the oil outlet P2 outflows of duplex pump 1, according to
It is secondary that fluid is transmitted to actuator port A1 after the hydraulic fluid port P3 of pilot control 2, hydraulic fluid port P6 and oil filter 11, and through actuator port A1
Fluid is transmitted to guide's hydraulic fluid port xA1 of multi-way valve 3, under first oil diverting port xA1 pressure oils effect, more work(of multi-way valve 3 by action
Can struggle against connection spool action, and fluid is after the oil outlet P1 outflows of duplex pump 1, oil inlet P 4 and internal galleries through multi-way valve 3, then
It is flowed out from hydraulic fluid port B4, after being assigned to balanced valve 5, fluid is transported to the rodless cavity of multi-functional bucket control cylinder 6, is realized multi-functional
The rod chamber of the action for the control cylinder 6 that struggles against, multi-functional bucket control cylinder 6 then passes through hydraulic fluid port A4 connected tanks 15；When small pilot valve 13
When returning to middle position by the left side positions A1, the pressure oil of guide's hydraulic fluid port xA1 of multi-way valve 3 flows back to fuel tank 15, and multi-functional bucket joins spool
In middle position, balanced valve 5 is latched hydraulic circuit, prevents the action of multi-functional bucket control cylinder 6；In acting handoff procedure, put down
Weighing apparatus valve 5 itself can establish certain back pressure in oil return circuit, prevent from accelerating to fall or cause multi-functional bucket to control because of dead weight
Oil cylinder 6 is insufficient to be emptied, and realizes smooth motion；Utilization i.e. by balanced valve 5 in systems solves multi-functional bucket oneself
Dynamic opening problem.
The guide's oil circuit of loading machine hydraulic system of working, in 13 handle of small pilot valve to the position A1, B1 and pilot valve 14
When handle to the position A2, B2, A3, B3, fluid is after the oil outlet P2 outflows of duplex pump 1, the hydraulic fluid port on the one hand through pilot control 2
P6, oil filter 11 are transported to corresponding hydraulic fluid port, and on the other hand simultaneously through hydraulic fluid port P6 to 12 filling liquid of adjustable pollution discharge pipe device, operating personnel pass through
Small pilot valve 13 and pilot valve 14 are manipulated, realizes the various actions of equipment.Adjustable pollution discharge pipe device 12 can be in complete machine work shape
Under state and flameout state, certain pressure oil is provided and carries out emergency operation for small pilot valve 13 and pilot valve 14.Due to the guide
Oil is at middle position and main working oil path is mutual indepedent, thus avoids influence of the guide's oil circuit to the settling amount of oil cylinder, Jin Eryou
Change the sedimentation figureofmerit of complete machine.
Claims (6)
1. a kind of loading machine hydraulic system of working, including main working oil path, guide's oil circuit, duplex pump (1) and fuel tank (15), described
The oil inlet of duplex pump (1) is connected to fuel tank (15), and the left side oil outlet P1 of duplex pump (1) is connect with main working oil path, duplex
The right side oil outlet P2 of pump (1) is connect with guide's oil circuit, it is characterised in that：The main working oil path includes multi-way valve (3), more work(
The control cylinder that can struggle against (6), stable module accumulator (7), stable module (8), boom cylinder (9) and rotary ink tank (10), duplex
The left side oil outlet P1 of pump (1) is connect with the oil inlet P 4 of multi-way valve (3)；Multi-functional bucket in multi-way valve (3) joins valve (31)
Hydraulic fluid port A4, B4 are connect with the rod chamber of multi-functional bucket control cylinder (6) and rodless cavity respectively, the hydraulic fluid port A6 of rotating bucket connection valve (32),
B6 is connect with the rod chamber of rotary ink tank (10) and rodless cavity respectively, and hydraulic fluid port A5, B5 that swing arm joins valve (33) are oily with swing arm respectively
The rod chamber of cylinder (9) is connected with rodless cavity；In multi-way valve (3) swing arm connection valve (33) hydraulic fluid port A5, B5 also respectively with stable mode
Block (8) connects, and the hydraulic fluid port P5 of stable module (8) is connect with stable module accumulator (7), and hydraulic fluid port T5 is connected to fuel tank (15).
2. loading machine hydraulic system of working according to claim 1, it is characterised in that：The guide's oil circuit includes guide oil
Source (2), small pilot valve (13) and pilot valve (14), the right side oil outlet P2 of duplex pump (1) connect with the hydraulic fluid port P3 of pilot control (2)
It connects, hydraulic fluid port P6 is connect with small pilot valve (13) and pilot valve (14)；Each actuator port A1, B1 of small pilot valve (13) respectively to
Guide's hydraulic fluid port xA1, xB1 of multi-way valve (3) send pressure signal, and each actuator port A2, B2, A3, B3 of pilot valve (14) divide
Pressure signal is not sent to guide's hydraulic fluid port xA2, xB2, xA3, xB3 of multi-way valve (3).
3. loading machine hydraulic system of working according to claim 1 or 2, it is characterised in that：The main working oil path includes
Balanced valve (5), hydraulic fluid port A4, B4 of the multi-functional bucket connection valve (31) in multi-way valve (3) respectively by the oil circuit K1 of balanced valve (5),
K2 is connected to the rod chamber of multi-functional bucket control cylinder (6) and rodless cavity.
4. loading machine hydraulic system of working according to claim 3, it is characterised in that：The guide's oil circuit further includes oil strain
The oil inlet of device (11) and adjustable pollution discharge pipe device (12), oil filter (11) is connect with the hydraulic fluid port P6 of pilot control (2), oil outlet difference
It is connect with small pilot valve (13) and pilot valve (14)；Adjustable pollution discharge pipe device (12) accesses on pilot control (2).
5. loading machine hydraulic system of working according to claim 4, it is characterised in that：The main working oil path further includes back
Oily filter core (4), the oil inlet of the hydraulic fluid port T5 of stable module (8) and the hydraulic fluid port T3 interflow access oil return filter cores (4) of multi-way valve (3),
The oil outlet of oil return filter core (4) is connect with fuel tank (15).
6. loading machine hydraulic system of working according to claim 5, it is characterised in that：The multi-way valve (3) controls for guide
Standard multi-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721277527.4U CN207633396U (en) | 2017-09-30 | 2017-09-30 | Loading machine hydraulic system of working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721277527.4U CN207633396U (en) | 2017-09-30 | 2017-09-30 | Loading machine hydraulic system of working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207633396U true CN207633396U (en) | 2018-07-20 |
Family
ID=62858402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721277527.4U Expired - Fee Related CN207633396U (en) | 2017-09-30 | 2017-09-30 | Loading machine hydraulic system of working |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207633396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700578A (en) * | 2017-09-30 | 2018-02-16 | 山东临工工程机械有限公司 | Loading machine hydraulic system of working |
-
2017
- 2017-09-30 CN CN201721277527.4U patent/CN207633396U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700578A (en) * | 2017-09-30 | 2018-02-16 | 山东临工工程机械有限公司 | Loading machine hydraulic system of working |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 Termination date: 20180930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |