CN206860567U - A kind of loading machine joint energy supply hydraulic system - Google Patents
A kind of loading machine joint energy supply hydraulic system Download PDFInfo
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- CN206860567U CN206860567U CN201720643443.1U CN201720643443U CN206860567U CN 206860567 U CN206860567 U CN 206860567U CN 201720643443 U CN201720643443 U CN 201720643443U CN 206860567 U CN206860567 U CN 206860567U
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Abstract
The utility model provides a kind of loading machine joint energy supply hydraulic system, and the constant displacement pump that worked in system is connected engine respectively with turning to constant displacement pump, after work constant displacement pump is connected with the first two-bit triplet reversal valve, is divided into two-way by the first check valve：A-road-through crosses banked direction control valves connection rotary ink tank and boom cylinder, and another way passes sequentially through one way sequence valve, choke valve is connected with accumulator；After steering constant displacement pump is connected with the second two-bit triplet reversal valve, by being divided into three tunnels again after the second check valve：The first via connects fuel tank by safety valve, and the second tunnel is connected by choke valve with accumulator, and the 3rd tunnel, which is sequentially connected, closes the reactionless steering gear of core, limit valve and steering cylinder；The control method includes turning to discrimination model and teamwork determinating mode.The utility model can be realized in hydraulic system of working demand low pressure and mass flow, the joint energy supply of steering hydraulic system and hydraulic system of working, effectively reduce spill losses and restriction loss.
Description
Technical field
The utility model belongs to construction machinery hydraulic system technical field, more particularly to a kind of loading machine joint energy supply hydraulic pressure
System.
Background technology
Loading machine is a kind of engineering machinery for being widely used in the fields such as mine, road administration, building.Current loader hydraulic system
System includes quantitative system, determines variable system and entire variable system.
Quantitative system has that cost is low, advantages of simple structure and simple, is largely used in middle-size and small-size loading machine.It is but quantitative
System, because the output flow of pump mismatches with loading demand flow, causes spill losses larger, causes energy in the course of work
Utilization ratio declines and hydraulic fluid temperature rise, while can cause that total displacement needed for loader hydraulic system is larger, and lifting is started
Acc power demand, although have developed the advanced technologies such as Dual-pump flow-converging, Dual-pump flow-converging equivalence off-load in succession, still suffer from very big
Spill losses and restriction loss, spill losses and restriction loss need to further be reduced by the exploitation of new technology.Though variable system
Power loss so can be effectively reduced, but it is expensive, loading machine holistic cost will be caused to rise.
Utility model content
For defect present in above-mentioned prior art, the utility model provides a kind of loading machine joint energy supply hydraulic pressure system
System, is realized in hydraulic system of working demand low pressure and mass flow, the joint energy supply of steering hydraulic system and hydraulic system of working, is had
Effect reduces spill losses, further reduces the power demand of quantitative demand pump discharge capacity and engine.With reference to Figure of description, this reality
It is as follows with new technical scheme：
A kind of loading machine joint energy supply hydraulic system, mainly by hydraulic system of working, steering hydraulic system, the and of accumulator 19
Controller 29 forms；
The hydraulic system of working is by work constant displacement pump 2, the first two-bit triplet reversal valve 3, the first check valve 4, banked direction control valves
5th, rotary ink tank 8 and boom cylinder composition；
The steering hydraulic system by steering constant displacement pump 25, the second two-bit triplet solenoid directional control valve 24, the second check valve 23,
Safety valve 22, close the reactionless steering gear 18 of core, limit valve and steering cylinder composition；
The work constant displacement pump 2 is connected an engine 1 respectively with turning to constant displacement pump 25；
In hydraulic system of working, after the work constant displacement pump 2 is connected with the first two-bit triplet reversal valve 3, an oil circuit connects
Connected tank 28, another oil circuit by being divided into two-way again after the first check valve 4：A-road-through crosses banked direction control valves 5 and connects the He of rotary ink tank 8
Boom cylinder, another way passes sequentially through one way sequence valve 21, choke valve 20 is connected with accumulator 19；
In steering hydraulic system, after the steering constant displacement pump 25 is connected with the second two-bit triplet reversal valve 24, an oil circuit
Fuel tank 28 is connected, another oil circuit by being divided into three tunnels again after the second check valve 23：The first via connects fuel tank by safety valve 22
28, the second tunnel is connected by choke valve 20 with accumulator 19, and the 3rd tunnel, which is sequentially connected, closes the reactionless steering gear 18 of core, limit valve 16
And steering cylinder.
The banked direction control valves 5 is sequentially connected by three position and four-way reversing valves 7 of six-way transfer valve 6 and four and formed, described three six
The P mouths of logical reversal valve 6 are connected with the first check valve 4, the A1 mouths of three six-way transfer valves 6 and the rod chamber of rotary ink tank 8
It is connected, the B mouths of three six-way transfer valves 6 are connected with the rodless cavity of rotary ink tank 8, the A mouths of three six-way transfer valves 6 and four four
The P mouths of logical reversal valve 7 are connected, the A mouths of four position and four-way reversing valve 7 through one-way throttle valve 9 respectively with right boom cylinder 10 and
The rodless cavity connection of left boom cylinder 11, the B mouths of four four-ways commutation 7 respectively with right boom cylinder 10 and left boom cylinder
11 rod chamber connection.
Second check valve 23 connects the P mouths for closing the reactionless steering gear 18 of core, and the T mouths for closing the reactionless steering gear 18 of core connect
Connected tank 28, close the L mouths of the reactionless steering gear 18 of core by the first limit valve 16 respectively with the rod chamber of left steering oil cylinder 13 and the right side
The rodless cavity of steering cylinder 15 is connected, close the R mouths of the reactionless steering gear 18 of core by the second limit valve 17 respectively with left steering oil cylinder
13 rodless cavities are connected with the rod chamber of right turn oil cylinder 15.
The controller 29 connects with the first two-bit triplet reversal valve 3 and the control of the second two-bit triplet solenoid directional control valve 24 respectively
Connect, the pressure sensor in the exit of the accumulator 19 is connected with the signal of controller 29, and banked direction control valves 5 is detected using proximity switch
Whether control stick is in middle position, and the signal detected is transferred into controller 29.
The banked direction control valves 5 and to close the reactionless formula steering gear 18 of core be middle position totally enclosed type, is used cooperatively with accumulator 19,
To reduce spill losses in valve.
Compared with prior art, the beneficial effects of the utility model are：
1st, accumulator, one way sequence valve added in loading machine joint energy supply hydraulic system described in the utility model, close core
Reactionless formula steering gear, the totally-enclosed banked direction control valves of middle position, constant displacement pump excess traffic is stored and as the 3rd energy source using accumulator,
When may be implemented in hydraulic system of working demand low pressure and mass flow, the joint energy supply of steering hydraulic system and hydraulic system of working can
Further reduce discharge capacity needed for constant displacement pump, reduce engine power demand, improve fuel economy and energy utilization efficiency, phase
Than in existing Dual-pump flow-converging technology, reducing the high pressure kicks loss and restriction loss of hydraulic system.
2nd, in loading machine described in the utility model joint energy supply hydraulic system processing, when meeting mode changeover condition
When, it can make and turn to constant displacement pump zero load oil return, accumulator is operated alone steering hydraulic system, can now reduce hydraulic system to starting
Load caused by machine, engine is set to have more multi-energy to enter drive system.
3rd, loading machine joint energy supply hydraulic system described in the utility model individually energizes technology compared to existing accumulator,
The utility model by one way sequence valve ensures that, when hydraulic system of working demand pressure raises, working solution can be automatically cut off
Oil circuit between pressure system and accumulator, when avoiding load change, due to the constant caused phenomenon of nodding of energy storage pressure.
4th, loading machine joint energy supply hydraulic system described in the utility model is reduced and changed on the basis of energy-saving effect is ensured
Dress up this.
Brief description of the drawings
Fig. 1 is the structural representation of loading machine described in the utility model joint energy supply hydraulic system；
Fig. 2 is the one-piece pattern logic diagram of loading machine described in the utility model joint energy supply hydraulic system processing；
Fig. 3 is in loading machine described in the utility model joint energy supply hydraulic system processing, turns to patrolling for discrimination model
Collect block diagram；
Fig. 4 is in loading machine described in the utility model joint energy supply hydraulic system processing, combines patrolling for discrimination model
Collect block diagram.
In figure：
1 engine, 2 work constant displacement pumps, 3 first two-bit triplet reversal valves, 4 first check valves,
5 banked direction control valves, 6 three six-way transfer valves, 7 four position and four-way reversing valves, 8 rotary ink tanks,
9 one-way throttle valves, 10 right boom cylinders, 11 left boom cylinders, 12 overflow valves,
13 left steering oil cylinders, 14 shuttle valves, 15 right turn oil cylinders, 16 first limit valves,
17 second limit valves, 18 close the reactionless steering gear of core, 19 accumulators, 20 choke valves,
21 one way sequence valves, 22 safety valves, 23 second check valves, 24 second two-bit triplet solenoid directional control valves,
25 turn to constant displacement pump, 26 first filters, 27 second filters, 28 fuel tanks.
Embodiment
For the technical solution of the utility model is expanded on further, with reference to Figure of description, specific implementation of the present utility model
Mode is as follows：
As shown in figure 1, the utility model provides a kind of loading machine joint energy supply hydraulic system, the system includes：Start
Machine 1, work constant displacement pump 2, the first two-bit triplet reversal valve 3, the first check valve 4, banked direction control valves 5, rotary ink tank 8, one-way throttle valve
9th, right boom cylinder 10, left boom cylinder 11, overflow valve 12, left steering oil cylinder 13, shuttle valve 14, right turn oil cylinder 15, first limit
Position valve 16, the second limit valve 17, close the reactionless steering gear 18 of core, accumulator 19, choke valve 20, one way sequence valve 21, safety valve
22nd, the second check valve 23, the second two-bit triplet solenoid directional control valve 24, steering constant displacement pump 25, first filter 26 and second filter
Device 27, fuel tank 28 and controller 29, wherein, the banked direction control valves 5 is made up of three position and four-way reversing valves 7 of six-way transfer valve 6 and four.
Each part annexation is as follows：
The engine 1 has two, is set up in parallel, and one of engine 1 is connected by power transmission shaft and work constant displacement pump 2
Connect, another engine 1 is connected by power transmission shaft with turning to constant displacement pump 25；
The oil inlet of the work constant displacement pump 2 is connected by the second filter 27 with fuel tank 28, and work the fuel-displaced of constant displacement pump 2
Mouthful it is connected with the P mouths of the first two-bit triplet reversal valve 3, the B mouths of the first two-bit triplet reversal valve 3 are connected with fuel tank 28, and described the
The A mouths of one or two three-way diverter valve 3 after the first check valve 4 by being divided into two-way：Banked direction control valves 5 is connected all the way, and another way connects successively
Connect one way sequence valve 21, choke valve 20 and accumulator 19；
Wherein, the banked direction control valves 5 is sequentially connected by three position and four-way reversing valves 7 of six-way transfer valve 6 and four and formed, and described three
The P mouths of position six-way transfer valve 6 are connected with the first check valve 4, three A1 mouths of six-way transfer valve 6 and having for rotary ink tank 8
Rod cavity is connected, and the B mouths of three six-way transfer valves 6 are connected with the rodless cavity of rotary ink tank 8, the A mouths and four of three six-way transfer valves 6
The P mouths of position and four-way reversing valve 7 are connected, the A mouths of four position and four-way reversing valve 7 through one-way throttle valve 9 respectively with right boom cylinder
10 connect with the rodless cavity of left boom cylinder 11, the B mouths of four four-ways commutation 7 respectively with right boom cylinder 10 and left swing arm
The rod chamber connection of oil cylinder 11；
The oil inlet for turning to constant displacement pump 25 is connected by first filter 26 with fuel tank 28, turns to going out for constant displacement pump 25
Hydraulic fluid port is connected with the P mouths of the second two-bit triplet reversal valve 24, and the B mouths of the second two-bit triplet reversal valve 24 are connected with fuel tank 28, the
The A mouths of two two-bit triplet reversal valves 24 after the second check valve 23 by being divided into three tunnels：The first via connects fuel tank by safety valve 22
28, the second tunnel is connected by choke valve 20 with accumulator 19, and the 3rd tunnel, which connects, closes the P mouths of the reactionless steering gear 18 of core, close core without
React the T mouths connection fuel tank 28 of steering gear 18, close the L mouths of the reactionless steering gear 18 of core by the first limit valve 16 respectively with left-hand rotation
It is connected to the rod chamber of oil cylinder 13 with the rodless cavity of right turn oil cylinder 15, closes the R mouths of the reactionless steering gear 18 of core by the second limit
Position valve 17 is connected with the rodless cavity of left steering oil cylinder 13 and the rod chamber of right turn oil cylinder 15 respectively；Two input ports of shuttle valve 14
It is connected respectively with the first limit valve 16, the second limit valve 17, delivery outlet is connected by overflow valve 12 with fuel tank 28.
The controller 29 is connected with the first two-bit triplet reversal valve 3 and the second two-bit triplet solenoid directional control valve 24 respectively,
To control the action of two reversal valves；The exit of the accumulator 19 is provided with pressure sensor sensor detection accumulator 19
Outlet pressure, the pressure sensor are connected with the signal of controller 29, and the pressure signal collected is transferred into controller 29, this
Utility model detects whether three control sticks of 6 and four position and four-way reversing valve of six-way transfer valve 7 are in middle position using proximity switch, and
The signal detected is transferred to controller 29.
A kind of course of work of loading machine joint energy supply hydraulic system described in the utility model is as follows：
Need to determine the upper pressure limit of accumulator 19 and low pressure limit first, it is desirable to which the low pressure limit of accumulator 19 should meet the limit
The pressure average of accumulator 19 under operating mode, the upper pressure limit of accumulator 19 should be slightly below the overflow pressure of the safety valve 22 of system
Power.
As shown in Fig. 2 when the control stick of loading arm and the control stick of rotating bucket are in middle position, the first two-bit triplet
The two-bit triplet solenoid directional control valve 24 of reversal valve 3 and second is in middle position locking state, the right boom cylinder 10, left boom cylinder
11 and rotary ink tank 8 be failure to actuate, now enter and turn to discrimination model, the 3 right position of the first two-bit triplet reversal valve is connected, i.e., the
The P mouths of one or two three-way diverter valve 3 and B mouths UNICOM；When the control stick of loading arm and the control stick of rotating bucket are not at middle position
When, the first two-bit triplet reversal valve 3 or the second two-bit triplet solenoid directional control valve 24 are not at middle position locking state, the right swing arm
Oil cylinder 10, left boom cylinder 11 and rotary ink tank 8 need to elongate or shorten, now into teamwork determinating mode, described the
One or two 3 left position of three-way diverter valve is connected, i.e. the P mouths of the first two-bit triplet reversal valve 3 and A mouths UNICOM.
1st, as shown in figure 3, the control process under the steering discrimination model is as follows：
(1) when the exit pressure levels of accumulator 19 are less than the low pressure limit value of accumulator 19, then enter and turn to combined drive
Dynamic model formula, 3 right position of the first two-bit triplet reversal valve are connected, i.e. the P mouths of the first two-bit triplet reversal valve 3 and B mouths UNICOM；Second liang
The left position of position three-way diverter valve 24 is connected, i.e. the P mouths of the second two-bit triplet reversal valve 24 and A mouths UNICOM.Turn to constant displacement pump 25
Oil-out is connected with the P mouths of the second two-bit triplet reversal valve 24, A mouth outflow of the liquid oil through the second two-bit triplet reversal valve 24, this
When, after because the exit pressure levels of accumulator 19 are relatively low, safety valve 22 is closed, therefore oil circuit flows through the second check valve 23
It is divided into two-way, a-road-through crosses choke valve 20 and flows to accumulator 19, and another way flows to the P mouths for closing the reactionless steering gear 18 of core；Work
The output fluid of constant displacement pump 2 flows back to fuel tank by the first two-bit triplet reversal valve 3, now, turns to constant displacement pump 25 and accumulator 19
Access system simultaneously, accumulator 19, which absorbs, turns to the excess pressure of constant displacement pump 25 oil, and absorption pressure fluctuates.
(2) when the exit pressure levels of accumulator 19 are higher than the upper pressure limit value of accumulator 19, then enter and turn to accumulator
Drive pattern, 3 right position of the first two-bit triplet reversal valve are connected, i.e. the P mouths of the first two-bit triplet reversal valve 3 and B mouths UNICOM；Second
The right position of two-bit triplet reversal valve 24 is connected, i.e. the P mouths of the second two-bit triplet reversal valve 24 and B mouths UNICOM.Work constant displacement pump 2
Output fluid flows back to fuel tank by the B mouths of the first two-bit triplet reversal valve 3；The output fluid for turning to constant displacement pump 25 passes through second liang
The B mouths of position three-way diverter valve 24 flow back to fuel tank, and accumulator 19 is connected through choke valve 20 with closing the P mouths of the reactionless steering gear 18 of core,
Now, accumulator 19 is individually for steering hydraulic system and provides pressure oil, turns to 25 unloaded oil return of constant displacement pump, can reduce hydraulic system
Load caused by engine 1 is damaged, makes engine 1 have more multi-energy to enter drive system.
(3) when the exit pressure levels of accumulator 19 are higher than low pressure limit value and are less than upper pressure limit, sentence into holding is turned to
Other pattern, the first two-bit triplet reversal valve 3 and the second two-bit triplet reversal valve 24 maintain the position of last moment, keep turning
To combination drive pattern or turn to accumulator drive pattern.
2nd, as shown in figure 4, the control process under the teamwork determinating mode is as follows：
(1) when the exit pressure levels of accumulator 19 are less than the low pressure limit value of accumulator 19, then into joint combination drive
Pattern, the left position of the first two-bit triplet reversal valve 3 are connected, i.e. the P mouths of the first two-bit triplet reversal valve 3 and A mouths UNICOM, the second two
The left position of three-way diverter valve 24 is connected, i.e. the P mouths of the second two-bit triplet reversal valve 24 and A mouths UNICOM.It is fuel-displaced to turn to constant displacement pump 25
Mouth is connected with the P mouths of the second two-bit triplet reversal valve 24, A mouth outflow of the liquid oil through the second two-bit triplet reversal valve 24, now, by
Relatively low in the exit pressure levels of accumulator 19, safety valve 22 is closed, therefore oil circuit is divided into after flowing through the second check valve 23
Two-way, a-road-through cross choke valve 20 and flow to accumulator 19, and another way connects the P mouths for closing the reactionless steering gear 18 of core；Work is quantitative
The output fluid of pump 2 by being divided into two-way after the first two-bit triplet reversal valve 3 and the first check valve 4, all the way with the phase of banked direction control valves 5
Even, another way connects accumulator 19 by one way sequence valve 21, and now, steering hydraulic system and hydraulic system of working joint supply
Can, turn to constant displacement pump 25, work constant displacement pump 2 and accumulator 19 and provide pressure oil simultaneously for hydraulic system.
(2) when the exit pressure levels of accumulator 19 are higher than the upper pressure limit value of accumulator 19, then enter joint accumulator and drive
Dynamic model formula, 3 left position of the first two-bit triplet reversal valve are connected, i.e. the P mouths of the first two-bit triplet reversal valve 3 and A mouths UNICOM, second liang
The right position of position three-way diverter valve 24 is connected, i.e. the P mouths of the second two-bit triplet reversal valve 24 and B mouths UNICOM.Turn to constant displacement pump 25
Oil-out is connected by the B mouths of the second two-bit triplet reversal valve 24 with fuel tank 28, and the oil-out of accumulator 19 passes through choke valve 20
After be divided into two-way, the P mouths of the reactionless steering gear 18 of core are closed in connection all the way, and another way is connected with one-way throttle valve 21；Work is quantitative
The oil-out of pump 2 is connected with banked direction control valves 5 by being divided into two-way after the first two-bit triplet reversal valve 3 and check valve 4 all the way, another way
Accumulator 19 is connected by one way sequence valve 21, now, steering hydraulic system and hydraulic system of working joint energy supply, work are quantitative
Pump 2 and accumulator 19 provide pressure oil for hydraulic system simultaneously, turn to 25 unloaded oil return of constant displacement pump.
(3) when the exit pressure levels of accumulator 19 are higher than low pressure limit value and are less than upper pressure limit, sentence into joint holding
Other pattern, the first two-bit triplet reversal valve 3 and the second two-bit triplet reversal valve 24 maintain last moment position, keep joint mixing
Drive pattern or joint accumulator drive pattern.
Under above-mentioned teamwork determinating mode, due to the effect of one way sequence valve 21, hydraulic system of working part is joining
Closing under combination drive pattern and joint accumulator drive pattern has two kinds of working conditions：
(1) when hydraulic system of working demand low pressure and mass flow, the check valve in the one way sequence valve 21 is opened, and is turned to
Constant displacement pump 25 and the pressure oil output of accumulator 19, a part of flow can pass through on demand by closing the reactionless formula steering gear 18 of core
One limit valve 16 and the second limit valve 17, supply left steering oil cylinder 13 and right turn oil cylinder 15, another part fluid pass through unidirectional
Valve overflow valve 21, hydraulic system of working is flowed into, realize the joint energy supply of work constant displacement pump 2, steering constant displacement pump 25 and accumulator 19.
(2) when hydraulic system of working demand high-pressure low-flow, because the pressure of hydraulic system of working is higher than accumulator 19
Outlet pressure, the check valve closure in one way sequence valve 21, the work pressure oil output of constant displacement pump 2 passes through banked direction control valves 5, individually drives
Dynamic rotary ink tank 8, right movement arm oil cylinder 10 and left boom cylinder 11, if now hydraulic system of working pressure reaches one way sequence valve
21 setting pressure, then excess pressure fluid by one way sequence valve 21 by entering steering hydraulic system, simultaneously as unidirectional suitable
The back pressure effect of sequence valve 21, system can maintain elevated pressures, ensure that the stability of action.
The utility model employs middle position totally enclosed type banked direction control valves 5 and closes core without anti-in loading machine quantitative hydraulic system
Formula steering gear 18 is answered, is used cooperatively with accumulator 19, reduces spill losses and restriction loss in valve.
In 19 access system of accumulator, system can be considered constant pressure oil source system, the now effect of one-way throttle valve 9 be
During 19 cut-in operation hydraulic system of accumulator, avoid equipment decrease speed too fast.
Claims (5)
- A kind of 1. loading machine joint energy supply hydraulic system, it is characterised in that：Mainly it is made up of hydraulic system of working, steering hydraulic system, accumulator (19) and controller (29)；The hydraulic system of working is by work constant displacement pump (2), the first two-bit triplet reversal valve (3), the first check valve (4), multichannel Valve (5), rotary ink tank (8) and boom cylinder composition；The steering hydraulic system is by steering constant displacement pump (25), the second two-bit triplet solenoid directional control valve (24), the second check valve (23), safety valve (22), close the reactionless steering gear of core (18), limit valve and steering cylinder composition；The work constant displacement pump (2) is connected an engine (1) respectively with turning to constant displacement pump (25)；In hydraulic system of working, after the work constant displacement pump (2) is connected with the first two-bit triplet reversal valve (3), an oil circuit connects Connected tank (28), another oil circuit are divided into two-way again afterwards by the first check valve (4)：A-road-through crosses banked direction control valves (5) connection rotating bucket Oil cylinder (8) and boom cylinder, another way passes sequentially through one way sequence valve (21), choke valve (20) is connected with accumulator (19)；In steering hydraulic system, after the steering constant displacement pump (25) is connected with the second two-bit triplet reversal valve (24), an oil circuit Fuel tank (28) is connected, another oil circuit is divided into three tunnels again afterwards by the second check valve (23)：The first via is connected by safety valve (22) Connected tank (28), the second tunnel are connected by choke valve (20) with accumulator (19), and the 3rd tunnel, which is sequentially connected, closes the reactionless steering of core Device (18), limit valve (16) and steering cylinder.
- A kind of 2. loading machine joint energy supply hydraulic system as claimed in claim 1, it is characterised in that：The banked direction control valves (5) is sequentially connected and formed by three six-way transfer valves (6) and four position and four-way reversing valves (7), described three The P mouths of six-way transfer valve (6) are connected with the first check valve (4), the A1 mouths and rotary ink tank of three six-way transfer valves (6) (8) rod chamber is connected, and the B mouths of three six-way transfer valves (6) are connected with the rodless cavity of rotary ink tank (8), three six logical commutations The A mouths of valve (6) are connected with the P mouths of four position and four-way reversing valves (7), and the A mouths of four position and four-way reversing valve (7) are through one-way throttle valve (9) rodless cavity respectively with right boom cylinder (10) and left boom cylinder (11) is connected, the B mouths of four four-ways commutation (7) The rod chamber with right boom cylinder (10) and left boom cylinder (11) is connected respectively.
- A kind of 3. loading machine joint energy supply hydraulic system as claimed in claim 1, it is characterised in that：The P mouths of the reactionless steering gear of core (18) are closed in second check valve (23) connection, close the T mouths of the reactionless steering gear of core (18) Connect fuel tank (28), close the L mouths of the reactionless steering gear of core (18) by the first limit valve (16) respectively with left steering oil cylinder (13) Rod chamber is connected with right turn oil cylinder (15) rodless cavity, and the R mouths for closing the reactionless steering gear of core (18) pass through the second limit valve (17) It is connected respectively with left steering oil cylinder (13) rodless cavity and right turn oil cylinder (15) rod chamber.
- A kind of 4. loading machine joint energy supply hydraulic system as claimed in claim 1, it is characterised in that：The controller (29) controls with the first two-bit triplet reversal valve (3) and the second two-bit triplet solenoid directional control valve (24) respectively Connection, the pressure sensor in the exit of the accumulator (19) are connected with controller (29) signal, and banked direction control valves (5) is using close Whether switch detection control stick is in middle position, and the signal detected is transferred into controller (29).
- A kind of 5. loading machine joint energy supply hydraulic system as claimed in claim 1 or 2, it is characterised in that：The banked direction control valves (5) and to close the reactionless formula steering gear (18) of core be middle position totally enclosed type, coordinating with accumulator (19) makes With to reduce spill losses in valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720643443.1U CN206860567U (en) | 2017-06-06 | 2017-06-06 | A kind of loading machine joint energy supply hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720643443.1U CN206860567U (en) | 2017-06-06 | 2017-06-06 | A kind of loading machine joint energy supply hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN206860567U true CN206860567U (en) | 2018-01-09 |
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ID=60830690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720643443.1U Withdrawn - After Issue CN206860567U (en) | 2017-06-06 | 2017-06-06 | A kind of loading machine joint energy supply hydraulic system |
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| CN (1) | CN206860567U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044459B (en) * | 2017-06-06 | 2018-06-22 | 吉林大学 | A kind of loading machine joint energy supply hydraulic system and its control method |
| CN108317112A (en) * | 2018-03-21 | 2018-07-24 | 安徽合力股份有限公司 | A kind of fork truck duplex pump steering Parking braking release hydraulic system |
| CN111994059A (en) * | 2020-08-27 | 2020-11-27 | 东风商用车有限公司 | Device for controlling compressed air distribution and use for vehicle through combination valve |
-
2017
- 2017-06-06 CN CN201720643443.1U patent/CN206860567U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044459B (en) * | 2017-06-06 | 2018-06-22 | 吉林大学 | A kind of loading machine joint energy supply hydraulic system and its control method |
| CN108317112A (en) * | 2018-03-21 | 2018-07-24 | 安徽合力股份有限公司 | A kind of fork truck duplex pump steering Parking braking release hydraulic system |
| CN108317112B (en) * | 2018-03-21 | 2023-08-04 | 安徽合力股份有限公司 | Fork truck duplex pump turns to parking braking and releases hydraulic system |
| CN111994059A (en) * | 2020-08-27 | 2020-11-27 | 东风商用车有限公司 | Device for controlling compressed air distribution and use for vehicle through combination valve |
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