CN217462696U - Double-pump confluence energy-saving electro-hydraulic control system of slipform paver - Google Patents
Double-pump confluence energy-saving electro-hydraulic control system of slipform paver Download PDFInfo
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- CN217462696U CN217462696U CN202221688052.9U CN202221688052U CN217462696U CN 217462696 U CN217462696 U CN 217462696U CN 202221688052 U CN202221688052 U CN 202221688052U CN 217462696 U CN217462696 U CN 217462696U
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Abstract
A double-pump confluence energy-saving electro-hydraulic control system of a slip form paver relates to the technical field of electro-hydraulic control of engineering machinery. The hydraulic control system comprises two hydraulic subsystems, wherein each hydraulic subsystem comprises an oil tank, a hydraulic pump set, an engine, a hydraulic valve set and an actuating mechanism, a double-pump confluence electro-hydraulic control system is connected between the two hydraulic subsystems respectively, and the double-pump confluence electro-hydraulic control system is used for controlling pressure oil confluence operation or independent operation output by the hydraulic pump sets of the two hydraulic subsystems. The utility model provides a simple, the low-cost energy-saving double pump confluence electric liquid control system of system can give the utilization through the confluence mode to the hydraulic pressure subsystem that is in idle at some operating mode through electric liquid control system, makes engine work in the optimum rotational speed state to reach the purpose of practicing thrift engine fuel consumption, and can imitate the problem of solving in the background art.
Description
Technical Field
The utility model relates to an engineering machine tool electricity liquid control technical field specifically is an energy-conserving electric liquid control system of slipform paver double pump confluence.
Background
The slipform paver is one kind of multipurpose cement concrete structure paving apparatus with several working mechanisms, and is driven with hydraulic motor and hydraulic oil cylinder, belongs to the field of multi-pump fully hydraulic driving engineering machine, and is powered with diesel engine.
The sliding-mode paver driven by the multiple pumps comprises a plurality of hydraulic subsystems, and an executing mechanism with higher power is usually designed into a pump control subsystem to control the action of the pump control subsystem, such as a walking electro-hydraulic control subsystem, a vibration electro-hydraulic control subsystem, a feeding electro-hydraulic control subsystem and the like.
The hydraulic subsystems of the conventional multi-pump electro-hydraulic driven slipform paver in the market are mutually independent in function, the discharge capacity index of each pump is selected according to respective performance requirements, and the slipform paver cannot help others even if the slipform paver is in an idle state under certain working conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-conserving electric hydraulic control system of slipform paver double pump confluence can effectively solve the problem among the background art.
The technical scheme for realizing the purpose is as follows: the double-pump confluence energy-saving electro-hydraulic control system of the slipform paver comprises two hydraulic subsystems, wherein each hydraulic subsystem comprises an oil tank, a hydraulic pump group, an engine, a hydraulic valve group and an actuating mechanism, the output end of the engine is connected with the power input end of the hydraulic pump group, the hydraulic pump group is a load-sensitive pump, the hydraulic valve group is provided with a pressure oil port P1, a load-sensitive port LS1 and a working oil port A, B corresponding to the actuating mechanism, the P port of the hydraulic pump group is connected with the P1 port of the hydraulic valve group, the LS port of the hydraulic pump group is connected with the LS1 port of the hydraulic valve group, and the working oil port A, B of the hydraulic valve group is connected with the oil inlet and outlet ports of the actuating mechanism;
the method is characterized in that: and a double-pump confluence electro-hydraulic control system is respectively connected between the two hydraulic subsystems and is used for controlling pressure oil output by the hydraulic pump sets of the two hydraulic subsystems to run in confluence or independently.
Further, the double-pump confluence electro-hydraulic control system comprises a pilot control valve bank and a double-pump confluence valve bank, wherein the pilot control valve bank comprises an electromagnetic reversing valve and a pressure reducing valve, and the double-pump confluence valve bank comprises a first two-position two-way reversing valve and a second two-position two-way reversing valve;
the port 1 of the electromagnetic directional valve is connected with the port P of the hydraulic pump set of one of the hydraulic subsystems, the port 2 of the electromagnetic directional valve is connected with the port 3 of the pressure reducing valve, the port 3 of the pressure reducing valve is connected with the port 1 of the pressure reducing valve, the port 4 of the pressure reducing valve is connected with the port 4 of the pressure reducing valve, the port 2 of the pressure reducing valve is respectively connected with the port 3 of the first two-position two-way directional valve and the port 3 of the second two-position two-way directional valve, the port 1 and the port 2 of the first two-position two-way directional valve are connected in series between the port P of the hydraulic pump set of the two hydraulic subsystems, and the port 1 and the port 2 of the second two-position two-way directional valve are connected in series between the port LS of the hydraulic pump set of the two hydraulic subsystems.
Furthermore, the two hydraulic subsystems are respectively a walking hydraulic control system and a vibrating rod hydraulic control system, an executing mechanism of the walking hydraulic control system is a plurality of walking driving hydraulic motors, and an executing mechanism of the vibrating rod hydraulic control system is a plurality of vibrating rod driving hydraulic motors.
Furthermore, the hydraulic pump groups of the two hydraulic subsystems are driven by the same engine.
Furthermore, the energy-conserving electric hydraulic control system of slipform paver double pump confluence still includes energy-conserving electrical system, and energy-conserving electrical system includes mode change over switch, paver controller, the engine of hydraulic subsystem all corresponds and is connected with the engine ECU controller, the signal input part of paver controller is connected to mode change over switch, and paver controller control end connects double pump confluence electric hydraulic control system's electromagnetic directional valve control end and engine ECU controller respectively.
The utility model has the advantages that:
the utility model provides a simple, the low-cost energy-saving double pump confluence electric liquid control system of system can give the utilization through the confluence mode to the hydraulic pressure subsystem that is in idle at some operating mode through electric liquid control system, makes engine work in the optimum rotational speed state to reach the purpose of practicing thrift engine fuel consumption, and can imitate the problem of solving in the background art.
Drawings
FIG. 1 is a hydraulic schematic diagram of the present invention;
FIG. 2 is a schematic block diagram of the energy-saving electric control system of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic diagram of a first hydraulic pump group;
FIG. 5 is an enlarged view of the portion B in FIG. 1;
FIG. 6 is an enlarged view of the portion C of FIG. 5;
fig. 7 is a schematic diagram of a second hydraulic pump group.
Detailed Description
As shown in fig. 1-7, the utility model discloses a slip form paver double-pump confluence energy-saving electro-hydraulic control system, including walking hydraulic control system 15 and vibrting spear hydraulic control system 16.
The walking hydraulic control system 15 comprises a first hydraulic pump group 3, a first hydraulic valve group 4 and a plurality of walking driving hydraulic motors 5, the vibrating rod hydraulic control system comprises a second hydraulic pump group 8, a second hydraulic valve group 9 and a plurality of vibrating rod driving hydraulic motors 10, and the walking hydraulic control system 15 and the vibrating rod hydraulic control system 16 further comprise a shared oil tank 1 and an engine 2 connected with the power input ends of the first hydraulic pump group 3 and the second hydraulic pump group 8.
As a further explanation of this embodiment, the traveling driving hydraulic motor 5 is a driving mechanism of a traveling device of the paver, and the vibrating rod driving hydraulic motor 10 is a driving mechanism of the vibrating rod, which are conventional configurations of the existing slipform paver, and belong to the prior art, and are not described herein again.
The first hydraulic valve group 4 and the second hydraulic valve group 9 are conventional configurations of hydraulic control systems of existing sliding die pavers, and can be, but are not limited to, a proportional valve and a reversing valve, and a description thereof is omitted.
Further, the first hydraulic valve group 4 is provided with a pressure oil port P1, a load sensing port LS1, and working oil ports A, B corresponding to the respective walking drive hydraulic motors 5 one to one, and the second hydraulic valve group 9 is provided with a pressure oil port P1, a load sensing port LS1, and working oil ports A, B corresponding to the respective vibrating rod drive hydraulic motors 5 one to one.
The first hydraulic pump group 3 and the second hydraulic pump group 8 are both load-sensitive pumps, the hydraulic pump of the first hydraulic pump group 3 can adopt a bidirectional closed variable pump or a unidirectional open variable pump, and the embodiment adopts an open variable pump.
The P1 mouth of first hydraulic pressure valves 4 is connected to the P mouth of first hydraulic pressure pump package 3, the LS1 mouth of first hydraulic pressure valves 4 is connected to the LS mouth, the work hydraulic fluid port A, B of first hydraulic pressure valves 4 is connected with the business turn over hydraulic fluid port that corresponds walking drive hydraulic motor 5 respectively, the P1 mouth of second hydraulic pressure valves is connected to the P mouth of second hydraulic pressure pump package 8, the LS1 mouth of second hydraulic pressure valves 9 is connected to the LS mouth, the work hydraulic fluid port A, B of second hydraulic pressure valves 9 respectively with the business turn over hydraulic fluid port that corresponds vibrting spear drive hydraulic motor 10 is connected.
And a double-pump confluence electro-hydraulic control system 17 is further connected between the walking hydraulic subsystem 15 and the vibrating rod hydraulic subsystem 16, and the double-pump confluence electro-hydraulic control system 17 is used for controlling the confluence operation or the independent operation of the two corresponding walking hydraulic subsystems 15 and the vibrating rod hydraulic subsystem 16.
The double-pump confluence electro-hydraulic control system 17 comprises a pilot control valve group 6 and a double-pump confluence valve group 7, wherein the pilot control valve group 6 comprises an electromagnetic reversing valve 6.1 and a pressure reducing valve 6.2, the double-pump confluence valve group 7 comprises a first two-position two-way reversing valve 7.1 and a second two-position two-way reversing valve 7.2, the first two-position two-way reversing valve 7.1 and the second two-position two-way reversing valve 7.2 can adopt one of electric control, pneumatic control or hydraulic control, and the embodiment adopts a hydraulic two-position two-way reversing valve.
The hydraulic control system is characterized in that a port 1 of the electromagnetic directional valve 6.1 is connected with a port P of the first hydraulic pump group 3, a port 2 is connected with a port 3 of the pressure reducing valve 6.2, a port 3 is connected with a port 1 of the pressure reducing valve 6.2, a port 4 is connected with the oil tank 1, a port 2 of the pressure reducing valve 6.2 is respectively connected with a port 3 of the first two-position two-way directional valve 7.1 and a port 3 of the second two-position two-way directional valve 7.2, a port 1 and a port 2 of the first two-position two-way directional valve 7.1 are connected in series between ports P of the first hydraulic pump group 3 and the second hydraulic pump group 8, and a port 1 and a port 2 of the second two-position two-way directional valve are connected in series between ports LS of hydraulic pumps of two corresponding hydraulic subsystems.
As shown in fig. 2, the slip form paver double-pump confluence energy-saving electro-hydraulic control system further comprises an energy-saving electric control system, the energy-saving electric control system comprises a mode change-over switch 12 and a paver controller 13, the engine 2 is correspondingly connected with an engine ECU controller 14, the mode change-over switch 12 is connected with a signal input end of the paver controller 13, and a control end of the paver controller 13 is respectively connected with a control end of the electromagnetic directional valve 6.1 and the engine ECU controller 14.
The utility model discloses a theory of operation as follows:
when the slipform paver is in a self-walking transition mode (namely the work of a walking device and the stop work of a paving system), the vibrating rod drives the hydraulic motor 10 to be in an idle state, the second hydraulic valve group 9 is not communicated with the vibrating rod driving hydraulic motor 10, a pressure oil source input into the second hydraulic valve group 9 by the second hydraulic pump group 8 is cut off, the pressure oil source is converged with a pressure oil source of the first hydraulic pump group 3 by the double-pump confluence valve group 7 and then input into the first hydraulic valve group 4, and the walking of the slipform paver is controlled.
Specifically, when the slipform paver needs to perform self-walking transition, the slipform paver is switched to a self-walking transition mode through the mode change switch 12, after the paver controller 13 recognizes a mode signal, a control signal is output to enable the coil Y1 of the electromagnetic directional valve 6.1 of the pilot control valve group 6 to be powered on, the valve core of the electromagnetic directional valve 6.1 is changed, a pressure oil source from the first hydraulic pump 3 reaches the oil inlet 1 of the pressure reducing valve 6.2, pressure oil meeting requirements after pressure reduction reaches the pilot control oil port X of the double-pump confluence valve group 6 from the oil outlet 2 of the pressure reducing valve 6.2, then the pressure oil respectively reaches the pilot control oil-liquid control ports 3 of the first two-position two-way directional valve 7.1 and the second two-position two-way directional valve 7.2, the valve cores of the first two-position two-way directional valve 7.1 and the second two-position two-way directional valve 7.2 are controlled, and the position change between the P ports of the first hydraulic pump group 3 and the second hydraulic pump group 8, The LS ports are communicated with each other, the output pressure oil sources of the first hydraulic pump group 3 and the second hydraulic pump group 8 are converged to drive the sliding-mode paver to walk together, the displacement of a hydraulic pump for driving walking is increased after double-pump converging, the rotating speed of the engine 2 can be reduced in proportion, and the maximum flow required by the hydraulic motor 5 driven by walking is guaranteed.
The sliding mode paver of the embodiment can automatically switch the walking hydraulic control system 15 and the vibrating rod hydraulic control system 16 to a double-pump confluence state in a transition mode, and simultaneously the sliding mode paver controller 13 transmits the rotating speed value of the engine prefabricated in the state to the engine ECU controller 14, so that the rotating speed of the engine 2 is adjusted to a set value and is in an optimal oil consumption state, and the system is energy-saving, simple and reliable.
When the slipform paver is in a working state (namely a pavement paving state), the slipform paver is switched to the working mode through the mode switch 12, after the slipform paver controller 13 recognizes a mode signal, a control signal is output to enable the coil Y1 of the electromagnetic directional valve 6.1 of the pilot control valve group 6 to be powered off, the valve core of the electromagnetic directional valve 6.1 is reset, the pilot control oil port X of the double-pump confluence valve group 6 is communicated with the hydraulic oil tank 1, the pilot control oil ports 3 of the first two-position two-way directional valve 7.1 and the second two-position two-way directional valve 7.2 are subjected to pressure loss and unloading, the valve cores of the first two-position two-way directional valve 7.1 and the second two-position two-way directional valve 7.2 are reset, so that the load sensitive pipelines and the pressure output pipelines of the first hydraulic pump 3 and the second hydraulic pump 8 are disconnected, and the walking hydraulic control system 15 and the vibrating rod hydraulic control system 16 run independently.
As a further explanation of this embodiment, the branch-and-branch flow control between walking hydraulic control system 15 and vibrating spear hydraulic control system 16 is taken as an example to specifically explain the principle of branch-and-branch flow control in this embodiment, and two arbitrary hydraulic subsystems can all adopt the utility model discloses a branch-and-branch flow control mode reaches the purpose of power rational distribution.
Claims (5)
1. The double-pump confluence energy-saving electro-hydraulic control system of the slipform paver comprises two hydraulic subsystems, wherein each hydraulic subsystem comprises an oil tank, a hydraulic pump group, an engine, a hydraulic valve group and an actuating mechanism, the output end of the engine is connected with the power input end of the hydraulic pump group, the hydraulic pump group is a load-sensitive pump, the hydraulic valve group is provided with a pressure oil port P1, a load-sensitive port LS1 and a working oil port A, B corresponding to the actuating mechanism, the P port of the hydraulic pump group is connected with the P1 port of the hydraulic valve group, the LS port of the hydraulic pump group is connected with the LS1 port of the hydraulic valve group, and the working oil port A, B of the hydraulic valve group is connected with the oil inlet and outlet ports of the actuating mechanism;
the method is characterized in that: and a double-pump confluence electro-hydraulic control system is respectively connected between the two hydraulic subsystems and is used for controlling pressure oil output by the hydraulic pump sets of the two hydraulic subsystems to run in confluence or independently.
2. The double-pump confluence energy-saving electro-hydraulic control system of the slipform paver of claim 1, which is characterized in that: the double-pump confluence electro-hydraulic control system comprises a pilot control valve group and a double-pump confluence valve group, wherein the pilot control valve group comprises an electromagnetic reversing valve and a pressure reducing valve, and the double-pump confluence valve group comprises a first two-position two-way reversing valve and a second two-position two-way reversing valve;
the port 1 of the electromagnetic directional valve is connected with the port P of the hydraulic pump set of one of the hydraulic subsystems, the port 2 of the electromagnetic directional valve is connected with the port 3 of the pressure reducing valve, the port 3 of the pressure reducing valve is connected with the port 1 of the pressure reducing valve, the port 4 of the pressure reducing valve is connected with the port 4 of the pressure reducing valve, the port 2 of the pressure reducing valve is respectively connected with the port 3 of the first two-position two-way directional valve and the port 3 of the second two-position two-way directional valve, the port 1 and the port 2 of the first two-position two-way directional valve are connected in series between the port P of the hydraulic pump set of the two hydraulic subsystems, and the port 1 and the port 2 of the second two-position two-way directional valve are connected in series between the port LS of the hydraulic pump set of the two hydraulic subsystems.
3. The double-pump confluence energy-saving electro-hydraulic control system of the slipform paver of claim 1, which is characterized in that: the two hydraulic subsystems are respectively a walking hydraulic control system and a vibrating rod hydraulic control system, an executing mechanism of the walking hydraulic control system is a plurality of walking driving hydraulic motors, and an executing mechanism of the vibrating rod hydraulic control system is a plurality of vibrating rod driving hydraulic motors.
4. The double-pump confluence energy-saving electro-hydraulic control system of the slipform paver of claim 3, which is characterized in that: the oil tanks of the two hydraulic subsystems are shared, and the hydraulic pump sets of the two hydraulic subsystems are driven by the same engine.
5. The double-pump confluence energy-saving electro-hydraulic control system of the slipform paver of claim 2, which is characterized in that: the energy-conserving electric hydraulic control system of slipform paver double pump confluence still includes energy-conserving electrical system, and energy-conserving electrical system includes mode change over switch, paver controller, the engine of hydraulic subsystem all corresponds and is connected with engine ECU controller, the signal input part of paver controller is connected to mode change over switch, and control end and the engine ECU controller of the electromagnetic reversing valve of double pump confluence electric hydraulic control system are connected respectively to paver controller control end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221688052.9U CN217462696U (en) | 2022-07-03 | 2022-07-03 | Double-pump confluence energy-saving electro-hydraulic control system of slipform paver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221688052.9U CN217462696U (en) | 2022-07-03 | 2022-07-03 | Double-pump confluence energy-saving electro-hydraulic control system of slipform paver |
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| CN217462696U true CN217462696U (en) | 2022-09-20 |
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| CN202221688052.9U Active CN217462696U (en) | 2022-07-03 | 2022-07-03 | Double-pump confluence energy-saving electro-hydraulic control system of slipform paver |
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