CN209838803U - Hydraulic control system and paver - Google Patents
Hydraulic control system and paver Download PDFInfo
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- CN209838803U CN209838803U CN201920716633.0U CN201920716633U CN209838803U CN 209838803 U CN209838803 U CN 209838803U CN 201920716633 U CN201920716633 U CN 201920716633U CN 209838803 U CN209838803 U CN 209838803U
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Abstract
The utility model provides a hydraulic control system and paver, hydraulic control system are used for the paver, and hydraulic control system includes: a first motor and a second motor; the first digital valve is provided with a first flow inlet, a first return port, a first working port and a second working port, the first flow inlet is connected with a hydraulic source, the first return port is connected with an oil return flow path, and the first working port and the second working port are connected with a first motor; the second digital valve is provided with a second flow inlet, a second return port, a third working port and a fourth working port, the second flow inlet is connected with the hydraulic source, the second return port is connected with the oil return flow path, and the third working port and the fourth working port are connected with a second motor; the first digital valve and the second digital valve are controlled by a programmable controller. The utility model provides a hydraulic control system utilizes the inside closed loop of digital valve to carry out accurate control to motor speed, can realize that the paver stabilizes the low-speed and traveles, and high accuracy straight line traveles.
Description
Technical Field
The utility model relates to a paver technical field particularly, relates to a hydraulic control system and a paver.
Background
In the related art, a general paver adopts a traveling hydraulic system of a closed type double-pump double-motor (a plunger pump and a plunger motor), and left and right traveling systems are controlled independently. In the running process of the paver, the running direction and speed are adjusted by adjusting the displacement of the pump and the motor and performing closed feedback, but the low-speed running stability is influenced by inherent characteristics of hydraulic parts such as the pump and the motor and is difficult to break through.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the low-speed stability of traveling that aims at solving paver among the prior art at least receives hydraulic pressure parts intrinsic characteristic influences such as pump, motor, is difficult to the technical problem who breaks through.
Therefore, the embodiment of the first aspect of the present invention provides a hydraulic control system that can ensure the stability of the paver running at low speed and the high accuracy of the straight line running.
The embodiment of the second aspect of the utility model provides an adopt above-mentioned hydraulic control system's paver.
In view of this, according to the utility model discloses an embodiment of first aspect, the utility model provides a hydraulic control system includes: a first motor and a second motor; the first digital valve is provided with a first flow inlet, a first return port, a first working port and a second working port, the first flow inlet is connected with a hydraulic source, the first return port is connected with an oil return flow path, and the first working port and the second working port are connected with a first motor; the second digital valve is provided with a second flow inlet, a second return port, a third working port and a fourth working port, the second flow inlet is connected with the hydraulic source, the second return port is connected with the oil return flow path, and the third working port and the fourth working port are connected with a second motor; the first digital valve and the second digital valve are controlled by a programmable controller.
The utility model provides a hydraulic control system, include, first digital valve and second digital valve, and by first motor of first digital valve control and by second digital valve controlled second motor, wherein, the aperture of first digital valve and second digital valve is controlled by Programmable Logic Controller (PLC) accurately, and, first motor and second digital motor are independent control, and then when the construction, can control first motor and second digital motor respectively according to the operating mode, thereby adjust the speed of traveling and the direction of traveling of paver, this hydraulic control system utilizes the inside closed loop of digital valve to carry out accurate control to the motor rotational speed, can break through the motor intrinsic characteristic, realize that the paver is stable to be driven at low speed, high accuracy straight line is driven.
In addition, the utility model provides a hydraulic control system in the above-mentioned embodiment can also have following additional technical characteristics:
in the above technical solution, preferably, the first digital valve is a three-position digital valve; the first digital valve is provided with a first working state that a first inflow port is communicated with a second working port and a first return port is communicated with the first working port; the first working port is communicated with the first return port; the first working port is communicated with the first flow inlet, and the first backflow port is communicated with the second working port.
In the technical scheme, the first digital valve is a three-position digital valve, and further can control the first motor to rotate forwards, reversely and stop.
In any of the above solutions, preferably, the second digital valve is a three-position digital valve; the second digital valve is provided with a first working state that a second inflow port is communicated with the fourth working port and a second return port is communicated with the third working port; the second working state that the second inlet, the second return port, the third working port and the fourth working port are not communicated with each other; the second inlet is communicated with the third working port, and the second return port is communicated with the fourth working port.
In the technical scheme, the second digital valve is a three-position digital valve, and further can control the second motor to rotate forwards, reversely and stop.
In any one of the above technical solutions, preferably, the hydraulic pressure source includes: the hydraulic system comprises a first hydraulic pump and a second hydraulic pump, wherein the liquid outlet end of the first hydraulic pump is connected with a first inlet, and the liquid outlet end of the second hydraulic pump is connected with a second inlet.
In the technical scheme, the first motor and the second motor are supplied with oil by the first hydraulic pump and the second hydraulic pump respectively, so that the first motor and the second motor are guaranteed to have stable oil sources, and the running stability of the first motor and the second motor is guaranteed.
In any of the above technical solutions, preferably, the hydraulic control system further includes: the feed liquor end of first hydraulic pump and the feed liquor end of second hydraulic pump all are connected with the stock solution device, and the oil return flow path is connected with the stock solution device.
In the technical scheme, the hydraulic control system further comprises a liquid storage device used for storing hydraulic oil.
In any of the above technical solutions, preferably, the first hydraulic pump is a first variable displacement pump; the second hydraulic pump is a second variable pump.
In the technical scheme, the first hydraulic pump adopts a first variable pump, the second hydraulic pump adopts a second variable pump, the flow of hydraulic oil can be changed, and the accurate control of the motor is further improved.
In any of the above technical solutions, preferably, the first digital valve is connected with the first motor through a first rubber tube; the second digital valve is connected with the second motor through a second rubber tube.
In this technical scheme, the rubber tube texture is soft can be crooked at will, and tough and durable, consequently, adopts first rubber tube to connect first digital valve and first motor, adopts second rubber tube to connect second digital valve and second motor, can reduce the assembly degree of difficulty, and guarantees that hydraulic oil can flow steadily.
According to the utility model discloses a second aspect embodiment, the utility model provides a paver, include: a programmable controller; a left side driving system and a right side driving system; according to the hydraulic control system in any one of the technical schemes, a first motor in the hydraulic control system is connected with a left running system, a second motor in the hydraulic control system is connected with a right running system, and a first digital valve and a second digital valve in the hydraulic control system are both electrically connected with a programmable controller.
The utility model provides a paver, including programmable controller, left side system of traveling, right side system of traveling and as above-mentioned any one in the technical scheme hydraulic control system, wherein, programmable controller control hydraulic control system, hydraulic control system drive left side system of traveling and the operation of right side system of traveling, and then realize advancing of paver, and, the utility model provides a paver is because of including as above-mentioned any one in the technical scheme hydraulic control system, consequently, have as above-mentioned any one in the technical scheme hydraulic control system's whole beneficial effect, no longer state one by one here.
In the above technical solution, preferably, the paver further includes: and the first operating system is connected with the programmable controller and used for triggering the programmable controller.
In the technical scheme, the paver further comprises a first operating system capable of triggering the programmable controller so that an operator can control the first digital valve and the second digital valve of the paver.
In any of the above technical solutions, preferably, the second operating system is connected to a first variable pump in the hydraulic control system and a second variable pump in the hydraulic control system, and is configured to control a flow rate of the first variable pump and a flow rate of the second variable pump.
In the technical scheme, the paver further comprises a second operating system capable of controlling the flow rate of the first variable pump and the flow rate of the second variable pump, so that an operator can control the first variable pump and the second variable pump of the paver.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a hydraulic control system according to an embodiment of the present invention;
FIG. 2 illustrates a schematic block diagram of a first digital valve in the hydraulic control system shown in FIG. 1;
fig. 3 shows a schematic diagram of the structure of a second digital valve in the hydraulic control system shown in fig. 1.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
1 hydraulic control system, 12 first motor, 14 second motor, 22 first digital valve, 222 first inlet, 224 first return, 226 first working port, 228 second working port, 24 second digital valve, 242 second inlet, 244 second return, 246 third working port, 248 fourth working port, 32 first hydraulic pump, 34 second hydraulic pump, 42 first rubber hose, 44 second rubber hose, 50 liquid storage device, 2 programmable controller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A hydraulic control system 1 and a paver provided in accordance with some embodiments of the present invention are described below with reference to fig. 1-3.
As shown in fig. 1 to 3, according to an embodiment of the first aspect of the present invention, the present invention provides a hydraulic control system 1, including: a first motor 12 and a second motor 14; a first digital valve 22 having a first inlet port 222, a first return port 224, a first working port 226, and a second working port 228, the first inlet port 222 being connected to a hydraulic pressure source, the first return port 224 being connected to a return flow path, the first working port 226 and the second working port 228 being connected to the first motor 12; a second digital valve 24 having a second inlet 242, a second return 244, a third working port 246, and a fourth working port 248, the second inlet 242 being connected to a hydraulic source, the second return 244 being connected to an oil return flow path, and the third working port 246 and the fourth working port 248 being connected to the second motor 14; the first digital valve 22 and the second digital valve 24 are connected to the programmable controller 2.
The utility model provides a hydraulic control system 1, include, first digital valve 22 and second digital valve 24, and by first motor 12 of first digital valve 22 control and by second motor 14 of second digital valve 24 control, wherein, the aperture of first digital valve 22 and second digital valve 24 is controlled by programmable controller 2(PLC) accurately, and, first motor 12 and second digital motor are independent control, and then when the construction, can control first motor 12 and second digital motor respectively according to the operating mode, thereby adjust the speed of traveling and the direction of travel of paver, this hydraulic control system 1 utilizes the inside closed loop of digital valve to carry out accurate control to the motor rotational speed, can break through the motor intrinsic characteristic, realize that the paver is driven at the low speed steadily, high accuracy straight line is driven.
In one embodiment of the present invention, preferably, as shown in fig. 1 and 2, the first digital valve 22 is a three-position, four-way digital valve; the first digital valve 22 has a first operating state in which the first inlet port 222 communicates with the second working port 228, and the first return port 224 communicates with the first working port 226; a second working state in which the first inlet port 222, the first return port 224, the first working port 226 and the second working port 228 are not communicated with each other; a third operating condition in which the first inlet port 222 communicates with the first working port 226 and the first return port 224 communicates with the second working port 228.
In this embodiment, the first digital valve 22 is a three-position four-way digital valve, and in the first state and the third state, the first motor 12 is controlled to operate in different directions, and in the second state, the first motor 12 is controlled to stop rotating.
Further, the opening degree of the first digital valve 22 can be controlled to adjust the rotating speed of the first motor 12, so as to realize the steering and speed change of the paver.
In one embodiment of the present invention, preferably, as shown in fig. 1 and 3, the second digital valve 24 is a three-position, four-way digital valve; the second digital valve 24 has a first operating state in which the second inlet port 242 communicates with the fourth working port 248 and the second return port 244 communicates with the third working port 246; a second operating state in which the second inlet 242, the second return 244, the third working port 246 and the fourth working port 248 are not communicated with each other; a third operating condition in which the second inlet port 242 communicates with the third working port 246 and the second return port 244 communicates with the fourth working port 248.
In this embodiment, the first digital valve 22 is a three-position four-way digital valve, and in the first state and the third state, the second motor 14 is controlled to operate in different directions, and in the second state, the second motor 14 is controlled to stop rotating.
Further, the opening degree of the second digital valve 24 can be controlled to adjust the rotation speed of the second motor 14, so that the steering and speed change of the paver are realized.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic pressure source includes: the first hydraulic pump 32, the outlet end of the first hydraulic pump 32 is connected with the first inlet 222.
In this embodiment, the first motor 12 is supplied with oil by the first hydraulic pump 32, thereby ensuring that the first motor 12 has a stable oil source and ensuring the stability of the operation of the first motor 12.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic pressure source includes: and the liquid outlet end of the second hydraulic pump 34 is connected with the second liquid inlet 242.
In this embodiment, the second motor 14 is supplied with oil by the second hydraulic pump 34, thereby ensuring that the second motor 14 has a stable oil source and ensuring the stability of the operation of the second motor 14.
In an embodiment of the present invention, preferably, as shown in fig. 1, the hydraulic control system 1 further includes: the liquid inlet end of the first hydraulic pump 32 and the liquid inlet end of the second hydraulic pump 34 are both connected with the liquid storage device 50, and the oil return flow path is connected with the liquid storage device 50.
In this embodiment, the hydraulic control system 1 further includes a reservoir 50 for storing hydraulic oil.
In one embodiment of the present invention, the first hydraulic pump 32 is preferably a first variable displacement pump.
In this embodiment, the first hydraulic pump 32 is a first variable displacement pump, which can change the flow rate of the hydraulic oil, thereby further improving the precise control of the first motor 12.
In one embodiment of the present invention, the second hydraulic pump 34 is preferably a second variable displacement pump.
In this embodiment, the second hydraulic pump 34 employs a second variable displacement pump, which can vary the flow rate of hydraulic oil, further improving the precise control of the second motor 14.
In one embodiment of the present invention, the first digital valve 22 is preferably connected to the first motor 12 by a first rubber hose 42
In this embodiment, the rubber tube is flexible and flexible, and is tough and durable, so that the first digital valve 22 and the first motor 12 can be connected by the first rubber tube 42, thereby reducing the difficulty of assembly and ensuring that the hydraulic oil can flow stably.
In one embodiment of the present invention, the second digital valve 24 and the second motor 14 are preferably connected by a second rubber hose 44.
In this embodiment, the rubber tube is flexible and flexible, and is tough and durable, so that the second digital valve 24 and the second motor 14 are connected by the second rubber tube 44, which can reduce the difficulty of assembly and ensure the stable flow of hydraulic oil.
According to the utility model discloses a second aspect embodiment, the utility model provides a paver, include: a programmable controller 2; a left side driving system and a right side driving system; and the hydraulic control system 1 provided in any of the above embodiments, the first motor 12 in the hydraulic control system 1 is connected to a left-side traveling system, the second motor 14 in the hydraulic control system 1 is connected to a right-side traveling system, and both the first digital valve 22 and the second digital valve 24 in the hydraulic control system 1 are electrically connected to the programmable controller 2.
The utility model provides a paver, including programmable controller 2, left side system of traveling, right side system of traveling and as above the hydraulic control system 1 that any embodiment provided, wherein, programmable controller 2 controls hydraulic control system 1, and hydraulic control system 1 drives the operation of left side system of traveling and right side system of traveling, and then realizes advancing of paver, and, the utility model provides a paver is because of including as above the hydraulic control system 1 that any embodiment provided, consequently, has as above all beneficial effects of hydraulic control system 1 that any embodiment provided, no longer states one by one here.
In an embodiment of the present invention, preferably, the paver further includes: and the first operating system is connected with the programmable controller 2 and used for triggering the programmable controller 2.
In this embodiment, the paving machine also includes a first operating system that triggers the programmable controller 2 for an operator to control the first and second digital valves 22, 24 of the paving machine.
Specifically, the first operating system is at least one of an operating panel, an operating handle, an operating pedal, and an operating button.
In an embodiment of the present invention, preferably, the second operating system is connected to the first variable pump in the hydraulic control system 1 and the second variable pump in the hydraulic control system 1, and is used for controlling the flow rate of the first variable pump and the flow rate of the second variable pump.
In this embodiment, the paver further includes a second operating system that can control the flow rates of the first variable pump and the second variable pump, so that an operator can control the first variable pump and the second variable pump of the paver.
Specifically, the second operating system is at least one of an operating panel, an operating handle, an operating pedal, and an operating button.
In a specific embodiment, the digital traveling hydraulic control system 1 of the paver is composed of a first motor 12, a second motor 14, a first digital valve 22, a second digital valve 24, a first variable pump, a second variable pump and a PLC controller, wherein the first digital valve 22 is connected with the first motor 12 through a first rubber pipe 42, and the second digital valve 24 is connected with the second motor 14 through a second rubber pipe 44.
When the hydraulic control system works, the PLC outputs signals, the first variable displacement pump and the second variable displacement pump output flow, hydraulic oil enters the first motor 12 and the second motor 14 through the first digital valve 22 and the second digital valve 24 respectively, the first motor 12 and the second motor 14 execute actions, and the hydraulic oil returns to the liquid storage device 50 through the first digital valve 22 and the second digital valve 24. The speeds of the first motor 12 and the second motor 14 on the left and right sides can be adjusted, and left and right synchronization is accurately controlled through a PLC output signal.
In the present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hydraulic control system, comprising:
a first motor and a second motor;
the first digital valve is provided with a first flow inlet, a first return port, a first working port and a second working port, the first flow inlet is connected with a hydraulic source, the first return port is connected with an oil return flow path, and the first working port and the second working port are connected with the first motor;
the second digital valve is provided with a second flow inlet, a second return port, a third working port and a fourth working port, the second flow inlet is connected with the hydraulic source, the second return port is connected with the oil return flow path, and the third working port and the fourth working port are connected with the second motor;
wherein the first digital valve and the second digital valve are controlled by a programmable controller.
2. The hydraulic control system of claim 1,
the first digital valve is a three-position digital valve;
the first digital valve has a first working state that the first flow inlet is communicated with the second working port and the first return port is communicated with the first working port;
the first working port is communicated with the first inflow port;
and the first flow inlet is communicated with the first working port, and the first return port is communicated with the second working port.
3. The hydraulic control system of claim 1,
the second digital valve is a three-position digital valve;
the second digital valve is provided with a first working state that the second inflow port is communicated with the fourth working port and the second return port is communicated with the third working port;
the second working state that the second inflow port, the second return port, the third working port and the fourth working port are not communicated with each other;
and the second flow inlet is communicated with the third working port, and the second return port is communicated with the fourth working port in a third working state.
4. The hydraulic control system according to any one of claims 1 to 3,
the hydraulic pressure source includes: the hydraulic pump comprises a first hydraulic pump and a second hydraulic pump, wherein the liquid outlet end of the first hydraulic pump is connected with the first inlet, and the liquid outlet end of the second hydraulic pump is connected with the second inlet.
5. The hydraulic control system of claim 4, further comprising:
the feed liquor end of first hydraulic pump with the feed liquor end of second hydraulic pump all with the stock solution device is connected, the oil return flow path with the stock solution device is connected.
6. The hydraulic control system of claim 4,
the first hydraulic pump is a first variable pump;
the second hydraulic pump is a second variable pump.
7. The hydraulic control system according to any one of claims 1 to 3,
the first digital valve is connected with the first motor through a first rubber pipe;
the second digital valve is connected with the second motor through a second rubber pipe.
8. A paving machine, comprising:
a programmable controller;
a left side driving system and a right side driving system; and
the hydraulic control system according to any one of claims 1 to 7, wherein a first motor of the hydraulic control system is connected to the left running system, a second motor of the hydraulic control system is connected to the right running system, and a first digital valve and a second digital valve of the hydraulic control system are both electrically connected to the programmable controller.
9. The paving machine of claim 8, further comprising:
and the first operating system is connected with the programmable controller and used for triggering the programmable controller.
10. The paving machine of claim 8, further comprising:
and the second operating system is connected with a first variable pump in the hydraulic control system and a second variable pump in the hydraulic control system and is used for controlling the flow rate of the first variable pump and the flow rate of the second variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716633.0U CN209838803U (en) | 2019-05-17 | 2019-05-17 | Hydraulic control system and paver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920716633.0U CN209838803U (en) | 2019-05-17 | 2019-05-17 | Hydraulic control system and paver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838803U true CN209838803U (en) | 2019-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920716633.0U Active CN209838803U (en) | 2019-05-17 | 2019-05-17 | Hydraulic control system and paver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209838803U (en) |
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2019
- 2019-05-17 CN CN201920716633.0U patent/CN209838803U/en active Active
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