CN211901167U - Double-gear pump parallel hydraulic control system - Google Patents
Double-gear pump parallel hydraulic control system Download PDFInfo
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- CN211901167U CN211901167U CN202020349125.6U CN202020349125U CN211901167U CN 211901167 U CN211901167 U CN 211901167U CN 202020349125 U CN202020349125 U CN 202020349125U CN 211901167 U CN211901167 U CN 211901167U
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Abstract
The utility model relates to a hydraulic control technical field, in particular to parallelly connected hydraulic control system of double gear pump contains: the hydraulic control module is used for driving the hydraulic actuating mechanism and comprises two groups of hydraulic control systems which are connected in parallel; each group of hydraulic control systems comprises: the motor, the gear pump that is connected with the motor to reach the combination valve that sets up on gear pump oil-out and hydraulic actuator hydraulic line. The utility model discloses simple structure, novel in design, scientific and reasonable through two parallelly connected hydraulic control system that can the autonomous working that comprise motor, gear pump and combination valve, can realize that two gear pumps are at simultaneous working or certain gear pump during operation alone, hydraulic system can both normal operating work, and the practicality is strong, has stronger popularization and application and worth.
Description
Technical Field
The utility model relates to a hydraulic control technical field, in particular to parallelly connected hydraulic control system of double gear pump.
Background
Hydraulic control systems are widely used in controlling the operation of various mechanisms, and many operations require control from two or more hydraulic oil sources, either individually or simultaneously. The traditional double-gear pump parallel hydraulic system cannot adjust the flow or uses a throttle valve to adjust the flow, so that excessive overflow pressure loss is caused, the temperature of hydraulic oil and hydraulic elements is further overhigh, and energy waste is also caused; besides, the traditional double-gear pump parallel hydraulic system often has the defects of inconvenient flow regulation, mutual influence of double systems and the like.
Disclosure of Invention
Not enough to prior art, the utility model provides a parallelly connected hydraulic control system of double gear pump, design science, reasonable can make two gear pumps at simultaneous working or certain gear pump during operation alone, and hydraulic system can both normal operating work, and is easy and simple to handle, and it is convenient to maintain, greatly reduced because of the energy loss that the fluid overflow caused.
According to the design scheme provided by the utility model, a double-gear pump parallel hydraulic control system comprises a hydraulic control module for driving a hydraulic actuating mechanism, wherein the hydraulic control module comprises two groups of hydraulic control systems connected in parallel; each group of hydraulic control systems comprises: the motor, the gear pump that is connected with the motor to reach the combination valve that sets up on gear pump oil-out and hydraulic actuator hydraulic line.
As the utility model discloses parallelly connected hydraulic control system of double gear pump, further, the combination valve contains: the hydraulic control reversing valve is connected with an oil inlet of the pressure compensation flow valve; the oil outlet of the pressure compensation flow valve is connected with the oil outlet of the hydraulic control reversing valve in parallel and then connected with the one-way valve, and the oil inlet of the hydraulic control reversing valve is connected with the control oil port of the hydraulic control reversing valve of the other group; oil outlets of the check valves of the two groups of hydraulic systems are connected in parallel and then connected with oil inlets of the electromagnetic directional valves, and oil outlets of the electromagnetic directional valves are connected with the hydraulic actuating mechanism; the overflow valve oil outlet and the pressure compensation flow valve bypass port are respectively connected with the oil tank.
As the utility model discloses the parallelly connected hydraulic control system of double gear pump, furtherly, pressure compensation flow valve is for taking pressure compensation and adjustable choke valve of flow.
The utility model has the advantages that:
the utility model discloses simple structure, novel in design, reasonable through two parallelly connected hydraulic control system that can the autonomous working that comprise motor, gear pump and combination valve, can realize that two gear pumps are at simultaneous working or certain gear pump during operation alone, hydraulic system can both normal operating work, and the practicality is strong, has stronger popularization and application and worth.
Description of the drawings:
FIG. 1 is a control schematic diagram of the embodiment when neither motor is started;
fig. 2 is a control schematic diagram of the embodiment when both motors are started.
Fig. 3 is a control principle of the motor No. 1 in the embodiment when starting.
The specific implementation mode is as follows:
in the figure, reference numerals 1.1 and 1.2 represent motors, reference numerals 2.1 and 2.2 represent gear pumps, reference numerals 3.1 and 3.2 represent overflow valves, reference numerals 4.1 and 4.2 represent pressure compensation flow valves, reference numerals 5.1 and 5.2 represent hydraulic control reversing valves, reference numerals 6.1 and 6.2 represent check valves, and reference numeral 7 represents an electromagnetic reversing valve.
The present invention will be described in further detail with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.
The embodiment of the utility model provides a double-gear pump parallel hydraulic control system, as shown in fig. 1, which comprises a hydraulic control module for driving a hydraulic actuating mechanism, wherein the hydraulic control module comprises two groups of hydraulic control systems connected in parallel; each group of hydraulic control systems comprises: the motor, the gear pump that is connected with the motor to reach the combination valve that sets up on gear pump oil-out and hydraulic actuator hydraulic line.
Through the hydraulic control system that sets up in parallel, can realize that two gear pumps are at simultaneous working or certain gear pump during operation alone, hydraulic system can both normal operating work, hydraulic reliable and stable nature in the promotion drive operation.
As the double-gear pump parallel hydraulic control system in the embodiment of the present invention, further, as shown in fig. 1, the combination valve includes: the hydraulic control reversing valve is connected with an oil inlet of the pressure compensation flow valve; the oil outlet of the pressure compensation flow valve is connected with the oil outlet of the hydraulic control reversing valve in parallel and then connected with the one-way valve, and the oil inlet of the hydraulic control reversing valve is connected with the control oil port of the hydraulic control reversing valve of the other group; oil outlets of the check valves of the two groups of hydraulic systems are connected in parallel and then connected with oil inlets of the electromagnetic directional valves, and oil outlets of the electromagnetic directional valves are connected with the hydraulic actuating mechanism; the overflow valve oil outlet and the pressure compensation flow valve bypass port are respectively connected with the oil tank. Through motor, gear pump, relief valve, pressure compensation flow valve, liquid accuse switching-over valve, check valve, solenoid directional valve, can make two gear pumps when simultaneous working or certain gear pump autonomous working, hydraulic system can both normal operating work, and is easy and simple to handle, and it is convenient to maintain, greatly reduced because of the energy loss that the fluid overflow caused. Further, the pressure compensation flow valve is a throttle valve with pressure compensation and adjustable flow, the set flow can be half of the maximum flow required by the actuator, and the set flow can be adjusted according to actual needs. The hydraulic control reversing valve is reset by a spring, and hydraulic pressure is reversed; the normal position is normally open. The electromagnetic reversing valve is reset by a spring, and is reversed by electromagnetic force; the normal position is the left position and is normally closed. The specific hydraulic control process may be described as follows:
as shown in fig. 2, the motors 1.1 and 1.2 are started, while the electromagnet of the electromagnetic reversing valve 7 is energized to reverse the valve. High-pressure oil at the outlet of the gear pump 2 flows through a pressure compensation flow valve 4 and a one-way valve 6 and then is converged at an oil inlet of an electromagnetic directional valve 7; the high-pressure oil after confluence enters a hydraulic actuator through an outlet of the electromagnetic directional valve 7. The high-pressure oil at the outlet of the gear pump 2 simultaneously enters the oil inlet and the control oil port of the hydraulic control reversing valve 5, and the high-pressure oil entering the control oil port of the hydraulic control reversing valve 5 pushes the valve core to reverse, so that the hydraulic control reversing valve 5 is in an open position, and the hydraulic control reversing valve 5 is in a disconnected state to enable the high-pressure oil to not pass through.
As shown in fig. 3, the motor 1.1 is started and the motor 1.2 is not operated, and simultaneously the electromagnet of the electromagnetic directional valve 7 is electrified to enable the valve to be directional; high-pressure oil at the outlet of the gear pump 2.1 respectively enters an oil inlet of a pressure compensation flow valve 4.1, an oil inlet of a hydraulic control reversing valve 5.1 and a control oil port of the hydraulic control reversing valve 5.2, and the hydraulic control reversing valve 5.2 reverses a valve core under the action of high-pressure oil so that the hydraulic control reversing valve 5.2 is turned off from through flow; because the resistance of the hydraulic control reversing valve 5.1 is smaller than that of the pressure compensation flow valve 4.1, high-pressure oil enters the hydraulic actuating mechanism after passing through the hydraulic control reversing valve 5.1, the one-way valve 6.1 and the electromagnetic reversing valve 7. The hydraulic control principle when the motor 1.2 is started and the motor 1.1 is not operated is the same as the above.
The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various changes and modifications may be made to the specific embodiments described above and various combinations of the technical features and structures proposed by the present invention may be made without departing from the concept of the present invention, and the scope of the present invention is defined by the appended claims. The foregoing description of specific exemplary embodiments of the invention is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (3)
1. A double-gear pump parallel hydraulic control system comprises a hydraulic control module for driving a hydraulic actuating mechanism, and is characterized in that the hydraulic control module comprises two groups of hydraulic control systems connected in parallel; each group of hydraulic control systems comprises: the motor, the gear pump that is connected with the motor to reach the combination valve that sets up on gear pump oil-out and hydraulic actuator hydraulic line.
2. A dual gear pump parallel hydraulic control system as claimed in claim 1 wherein the combining valve comprises: the hydraulic control reversing valve is connected with an oil inlet of the pressure compensation flow valve; the oil outlet of the pressure compensation flow valve is connected with the oil outlet of the hydraulic control reversing valve in parallel and then connected with the one-way valve, and the oil inlet of the hydraulic control reversing valve is connected with the control oil port of the hydraulic control reversing valve of the other group; oil outlets of the check valves of the two groups of hydraulic systems are connected in parallel and then connected with oil inlets of the electromagnetic directional valves, and oil outlets of the electromagnetic directional valves are connected with the hydraulic actuating mechanism; the overflow valve oil outlet and the pressure compensation flow valve bypass port are respectively connected with the oil tank.
3. A dual gear pump parallel hydraulic control system as claimed in claim 2 wherein the pressure compensating flow valve is a pressure compensated and flow adjustable throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020349125.6U CN211901167U (en) | 2020-03-19 | 2020-03-19 | Double-gear pump parallel hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020349125.6U CN211901167U (en) | 2020-03-19 | 2020-03-19 | Double-gear pump parallel hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901167U true CN211901167U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020349125.6U Active CN211901167U (en) | 2020-03-19 | 2020-03-19 | Double-gear pump parallel hydraulic control system |
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| Country | Link |
|---|---|
| CN (1) | CN211901167U (en) |
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2020
- 2020-03-19 CN CN202020349125.6U patent/CN211901167U/en active Active
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