CN205689704U - Closed-end hydraulic torque converter hydraulic system - Google Patents
Closed-end hydraulic torque converter hydraulic system Download PDFInfo
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- CN205689704U CN205689704U CN201620641559.7U CN201620641559U CN205689704U CN 205689704 U CN205689704 U CN 205689704U CN 201620641559 U CN201620641559 U CN 201620641559U CN 205689704 U CN205689704 U CN 205689704U
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Abstract
The open a kind of closed-end hydraulic torque converter hydraulic system of this utility model, including: repairing pipeline, circulation line and fluid torque-converter, repairing pipeline is connected with in turn fuel tank, the first gear pump；The second gear pump, heat exchanger and control valve it is connected with in turn, the outlet of heat exchanger and the outlet of the first gear pump on circulation line；Having oil-feed interface, oil out port, the first oil circuit interface and the second oil circuit interface, oil-feed interface and the outlet of the first gear pump in control valve, the entrance of oil out port and the second gear pump connects；Fluid torque-converter has locking interface and conciliates lock interface, locking interface and the connection of the first oil circuit interface, solves lock interface and is connected with the second oil circuit interface.Closed-end hydraulic torque converter hydraulic system of the present utility model can the power consumption of oil pump in reduction system, and the heat that torque-converters operationally produces can be taken away, prevent the cavitation in fluid torque-converter and compensate the damage leakage of hydraulic oil.
Description
Technical field
This utility model belongs to engineering truck transmission field, particularly relates to a kind of closed-end hydraulic torque converter hydraulic circulation system
System.
Background technology
Closed-end hydraulic torque converter is assembled in the drive system of vehicle, and the power of electromotor is passed to change speed gear box.Close
When the use on loader of the locking-type fluid torque-converter can make vehicle start, moment of torsion is automatically increased, and improves starting performance, minimizing
Impact when starting and gearshift, prevent engine overload and suddenly flame-out, improve driver comfort, to intercept engine torque uneven
The fluctuation of even generation, reduces noise.But hydraulic power is compared with machine driving, efficiency is low, and fuel economy is poor.In order to improve
The transmission efficiency of closed-end hydraulic torque converter, general employing has the fluid torque-converter of lockup clutch.Existing have locking
The fluid torque-converter of clutch operationally needs frequently to carry out locking reconciliation lock control and carrys out gear shift, and the oil pump in system not only needs
Manipulation oil pressure to be met, the big flow that torque-converters to be ensured needs, the power causing oil pump consumption of engine is big, and hydraulic pressure
Oil piping system is the most overheated.
Utility model content
For solving problem above, it is necessary to a kind of closed-end hydraulic torque converter hydraulic system, meeting, there is locking
While high pressure needed for the fluid torque-converter of clutch and high-capacity pump oil, it is also possible to the power of the oil pump in reduction system disappears
Consumption, and the heat that torque-converters operationally produces can be taken away, prevent the cavitation in fluid torque-converter and compensate hydraulic oil
Damage leakage.
In order to achieve the above object, this utility model is solved by the following technical solutions.
A kind of closed-end hydraulic torque converter hydraulic system, including: repairing pipeline, circulation line and fluid torque-converter,
Fuel tank, the first gear pump it is connected with in turn on described repairing pipeline；The second gear pump, heat it is connected with in turn on described circulation line
Exchanger and reversing control valve, the outlet of described heat exchanger and the outlet of described first gear pump；Described commutation control
There is on valve oil-feed interface, oil out port, the first oil circuit interface and the second oil circuit interface, described oil-feed interface and described first tooth
The outlet of wheel pump, described oil out port is connected with the entrance of described second gear pump；Described fluid torque-converter has locking
Interface conciliates lock interface, and described locking interface is connected with described first oil circuit interface, described solution lock interface and described second oil circuit
Interface connects；Wherein, described heat exchanger outlet with described first gear delivery side of pump and the oil-feed of described reversing control valve
Pipeline connection between interface.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, by the second gear pump, heat exchanger and
Reversing control valve and fluid torque-converter form an enclosed circulation pipeline, can reduce external dust and enter oil supply system
Probability, has ensured the reliability of Hydraulic Elements in oil supply system, also reduces the power demand of the second gear pump, the second gear pump
Can be selected for the gear pump of low-pressure high-flowrate, decrease electromotor power consumption on the second gear pump, the heat in circulation line
It is scattered that exchanger can be also that the hydraulic oil in system is circulated.The repairing pipeline that first gear pump and fuel tank are formed is passed through circulation pipe
In reversing control valve in road, the first gear pump is selected has elevated pressures and the gear pump of relatively low discharge, predominantly circulation pipe
Road supply manipulation oil, damages leakage for supplementing the hydraulic oil in enclosed circulation pipeline, sets up one in enclosed circulation pipeline
Individual initial pressure, makes the pressure of somewhere fluid in the working chamber of fluid torque-converter be not less than its evaporating pressure all the time, to prevent envelope
Produce cavitation in fluid torque-converter in closed cycle pipeline, the first gear pump can intermittent duty, power consumption is low.
As preferably, the outlet of described heat exchanger has with being connected on the pipeline between described first gear delivery side of pump
Other adapter road, described other adapter road is connected with described fuel tank, and described other adapter road connects overflow valve.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, in order to avoid hydraulic oil temperature rises and is
System hypertonia, overflow valve can pre-set a force value, when the charge oil pressure of the first gear pump is more than overflow valve restriction
After force value, unnecessary hydraulic oil will overflow back fuel tank from overflow valve, make the oil pressure in circulation line be always maintained at overflow valve
In the force value limited.
As preferably, it is connected between the outlet of described heat exchanger and the port on described other adapter road and has the first filtering
Device.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, the first cleaner may filter that circulation pipe
The impurity in hydraulic oil in road.
As preferably, it is connected between described first gear delivery side of pump and the port on described other adapter road and has constant pressure valve.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, the hydraulic oil warp of the first gear pump output
Crossing constant pressure valve supply torque-converters, constant pressure valve can be according to the different operating mode of fluid torque-converter and its internal liquid stream and pressure change
Rule be automatically adjusted the oil supply system flow by torque-converters, reach reasonably to control the effect of the heat dissipation capacity of torque-converters.
As preferably, the pipeline between described first gear delivery side of pump and described constant pressure valve is connected side by side and has throttling
Valve and final cleaner.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, final cleaner may filter that repairing pipe
Foreign material in road, when final cleaner is blocked, choke valve can use as bleed off circuit.
As preferably, connect between the entrance of described fuel tank and the first gear pump and have the 3rd cleaner.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, due to the working environment dirt of engineering machinery
Soil is big, and the 3rd cleaner can filter out the foreign material entered in fuel tank in advance.
As preferably, it is connected between the entrance of described second gear pump with outlet and has check valve, entering of described check valve
Mouth is connected with the entrance of described second gear pump, and the outlet of described check valve is connected with described second gear delivery side of pump.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, check valve provides one and the second tooth
The safety return circuit that wheel pump place pipeline is mutually juxtaposed, check valve can reduce reversing control valve hydraulic pressure when commutation in circulation line
The pressure oscillation of oil is to system pipeline and the impact of the second gear pump.
As preferably, it is connected between described second gear delivery side of pump and the oil-feed interface of described reversing control valve and has side
Logical relief valve, the entrance of described full by-pass relief valve is connected with described second gear delivery side of pump, the outlet of described full by-pass relief valve
It is connected with the oil-feed interface of described reversing control valve.
According to closed-end hydraulic torque converter hydraulic system of the present utility model, full by-pass relief valve can be used to prevent bending moment
Device produces cavitation, when the oil pressure of the interface that the hydraulic oil in fluid torque-converter flows out does not reaches predetermined back pressure, and bypass
Relief valve is not switched on.
Accompanying drawing explanation
With specific embodiment, this utility model is described in further details below in conjunction with the accompanying drawings.
Fig. 1 is the pipeline structure schematic diagram of the oil-filled hydraulic system of converter lockout of the present utility model.
In FIG: 1 fuel tank；2 first gear pumps；3 second gear pumps；4 heat exchangers；5 reversing control valves；P oil-feed connects
Mouthful；T oil out port；A the first oil circuit interface；B the second oil circuit interface；6 fluid torque-converters；601 locking interfaces；602 solve lock interface；
7 overflow valves；8 first cleaners；9 constant pressure valves；10 choke valves；11 final cleaners；12 check valves；13 full by-pass relief valves；14
Three cleaners.
Specific embodiment
As it is shown in figure 1, a kind of converter lockout for loader provided according to embodiment of the present utility model
Oil-filled hydraulic system, including: repairing pipeline, circulation line and fluid torque-converter 6, described repairing pipeline is connected with fuel tank in turn
1, the first gear pump 2；The second gear pump 3, heat exchanger 4 and reversing control valve 5 it is connected with in turn on described circulation line, described
The outlet of heat exchanger 4 and the outlet of described first gear pump 2；There is on described reversing control valve 5 oil-feed interface P, go out
The outlet of oil interface T, the first oil circuit interface A and the second oil circuit interface B, described oil-feed interface P and described first gear pump 2 is even
Logical, described oil out port T is connected with the entrance of described second gear pump 3；Described fluid torque-converter 6 has locking interface 601 He
Solving lock interface 602, described locking interface 601 is connected with described first oil circuit interface A, and described solution lock interface 602 is with described second
Oil circuit interface B connects；Wherein, the outlet of described heat exchanger 4 and the outlet of described first gear pump 2 and described reversing control valve
Pipeline connection between the oil-feed interface P of 5.
In the embodiment above, by the second gear pump 3, heat exchanger 4 and reversing control valve 5 and fluid torque-converter 6 shape
Become an enclosed circulation pipeline, external dust can be reduced and enter the probability of oil supply system, ensure hydraulic pressure in oil supply system
The reliability of element, also reduces the power demand of the second gear pump 3, and the second gear pump 3 can be selected for the gear of low-pressure high-flowrate
Pump, decreases electromotor power consumption on the second gear pump 3, and the heat exchanger 4 in circulation line can be also in system
Hydraulic oil is circulated scattered.The reversing control valve 5 that the repairing pipeline that first gear pump 2 and fuel tank 1 are formed is passed through in circulation line
In, the first gear pump 2 is selected has elevated pressures and the gear pump of relatively low discharge, predominantly circulation line supply manipulation oil,
Damage leakage for supplementing the hydraulic oil in enclosed circulation pipeline, to enclosed circulation pipeline is set up an initial pressure, make liquid
In the working chamber of power torque-converters 6, the pressure of somewhere fluid is not less than its evaporating pressure all the time, to prevent in enclosed circulation pipeline
Fluid torque-converter 6 in produce cavitation, the first gear pump 2 can intermittent duty, power consumption is low.
According to an embodiment of the present utility model, the outlet of described heat exchanger 4 and the outlet of described first gear pump 2
Between pipeline on connect and have other adapter road, described other adapter road is connected with described fuel tank 1, and described other adapter road connection has overflow
Valve 7.
In the embodiment above, rising in order to avoid hydraulic oil temperature and system pressure is too high, overflow valve 7 can pre-set one
Individual force value, when, after the force value that the charge oil pressure of the first gear pump 2 limits more than overflow valve 7, unnecessary hydraulic oil will be from overflowing
Stream valve 7 overflows back in fuel tank 1, makes the oil pressure in circulation line be always maintained in the force value that overflow valve 7 is limited.
According to an embodiment of the present utility model, the port on the outlet of described heat exchanger 4 and described other adapter road it
Between connect have the first cleaner 8.
In the embodiment above, the first cleaner 8 is fine filter, and the first cleaner 8 may filter that the liquid in circulation line
Impurity in force feed.
According to an embodiment of the present utility model, the outlet of described first gear pump 2 and the described other port taking over road
Between connect have constant pressure valve 9.
In the embodiment above, the hydraulic oil of the first gear pump 2 output supplies torque-converters through constant pressure valve 9, and constant pressure valve 9 can
The rule of the operating mode different according to fluid torque-converter 6 and its internal liquid stream and pressure change is automatically adjusted oil supply system and passes through
The flow of torque-converters, reaches reasonably to control the effect of the heat dissipation capacity of torque-converters.
According to an embodiment of the present utility model, the pipe between outlet and the described constant pressure valve 9 of described first gear pump 2
Connect side by side on road and have choke valve 10 and final cleaner 11.
In any of the above item embodiment, final cleaner 11 is fine filter, and final cleaner 11 may filter that repairing pipe
Foreign material in road, when final cleaner 11 is blocked, choke valve 10 can use as bleed off circuit.
According to an embodiment of the present utility model, it is connected between described fuel tank 1 and the entrance of the first gear pump 2 and has the 3rd
Cleaner 14.
In the embodiment above, owing to the working environment dust of engineering machinery is big, need some to entering in fuel tank 1 miscellaneous
Thing filters, and the 3rd cleaner 14 is coarse filter, and the 3rd cleaner 14 can filter out the foreign material entered in fuel tank 1 in advance.
According to an embodiment of the present utility model, be connected between the entrance of described second gear pump 3 with outlet have unidirectional
Valve 12, the entrance of described check valve 12 is connected with the entrance of described second gear pump 3, the outlet of described check valve 12 and described the
The outlet of two gear pumps 3 connects.
In the embodiment above, check valve 12 provides the safety being mutually juxtaposed with the second gear pump 12 place pipeline
Loop, check valve 12 can reduce the pressure oscillation of the reversing control valve 5 hydraulic oil when commutation in circulation line to system pipeline
Impact with the second gear pump 3.
According to an embodiment of the present utility model, the outlet of described second gear pump 3 and entering of described reversing control valve 5
Connecting between oil interface P and have full by-pass relief valve 13, the entrance of described full by-pass relief valve 13 connects with the outlet of described second gear pump 3
Connecing, the outlet of described full by-pass relief valve 13 is connected with the oil-feed interface P of described reversing control valve 5.
In the embodiment above, full by-pass relief valve 13 can be used to prevent torque-converters from producing cavitation, when fluid torque-converter 6
When the oil pressure of the interface that interior hydraulic oil flows out does not reaches predetermined back pressure, full by-pass relief valve 13 is not switched on.
Obviously, those skilled in the art can carry out various change and modification without deviating from this practicality to this utility model
Novel spirit and scope.So, if of the present utility model these amendment and modification belong to this utility model claim and
Within the scope of its equivalent technologies, then this utility model is also intended to comprise these change and modification.
Claims (8)
1. a closed-end hydraulic torque converter hydraulic system, it is characterised in that including:
Repairing pipeline, described repairing pipeline is connected with in turn fuel tank (1), the first gear pump (2)；
Circulation line, described circulation line is connected with in turn the second gear pump (3), heat exchanger (4) and reversing control valve
(5), the outlet of described heat exchanger (4) and the outlet of described first gear pump (2), the upper tool of described reversing control valve (5)
Have oil-feed interface (P), oil out port (T), the first oil circuit interface (A) and a second oil circuit interface (B), described oil-feed interface (P) with
The outlet of described first gear pump (2), described oil out port (T) is connected with the entrance of described second gear pump (3)；
Fluid torque-converter (6), described fluid torque-converter (6) has locking interface (601) and conciliates lock interface (602), described locking
Interface (601) is connected with described first oil circuit interface (A), and described solution lock interface (602) is with described second oil circuit interface (B) even
Connect；
Wherein, the outlet of the outlet of described heat exchanger (4) and described first gear pump (2) and described reversing control valve (5)
Pipeline connection between oil-feed interface (P).
Closed-end hydraulic torque converter hydraulic system the most according to claim 1, it is characterised in that described heat exchanger
(4) it is connected on the pipeline between outlet and the outlet of described first gear pump (2) and has other adapter road, described other adapter road and institute
Stating fuel tank (1) to connect, described other adapter road connects overflow valve (7).
Closed-end hydraulic torque converter hydraulic system the most according to claim 2, it is characterised in that described heat exchanger
(4) it is connected between outlet and the port on described other adapter road and has the first cleaner (8).
Closed-end hydraulic torque converter hydraulic system the most according to claim 2, it is characterised in that described first gear
It is connected between the outlet of pump (2) and the port on described other adapter road and has constant pressure valve (9).
Closed-end hydraulic torque converter hydraulic system the most according to claim 4, it is characterised in that described first gear
It is connected side by side on pipeline between the outlet of pump (2) with described constant pressure valve (9) and has choke valve (10) and final cleaner (11).
Closed-end hydraulic torque converter hydraulic system the most according to claim 5, it is characterised in that described fuel tank (1)
And it is connected between the entrance of the first gear pump (2) and has the 3rd cleaner (14).
Closed-end hydraulic torque converter hydraulic system the most according to claim 1, it is characterised in that described second gear
It is connected between the entrance of pump (3) with outlet and has check valve (12), the entrance of described check valve (12) and described second gear pump (3)
Entrance connect, the outlet of described check valve (12) is connected with the outlet of described second gear pump (3).
Closed-end hydraulic torque converter hydraulic system the most according to claim 7, it is characterised in that described second gear
It is connected between the outlet of pump (3) and the oil-feed interface (P) of described reversing control valve (5) and has full by-pass relief valve (13), described bypass
The entrance of relief valve (13) is connected with the outlet of described second gear pump (3), and the outlet of described full by-pass relief valve (13) is with described
The oil-feed interface (P) of reversing control valve (5) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620641559.7U CN205689704U (en) | 2016-06-24 | 2016-06-24 | Closed-end hydraulic torque converter hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620641559.7U CN205689704U (en) | 2016-06-24 | 2016-06-24 | Closed-end hydraulic torque converter hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689704U true CN205689704U (en) | 2016-11-16 |
Family
ID=57425232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620641559.7U Active CN205689704U (en) | 2016-06-24 | 2016-06-24 | Closed-end hydraulic torque converter hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689704U (en) |
-
2016
- 2016-06-24 CN CN201620641559.7U patent/CN205689704U/en active Active
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| GR01 | Patent grant |