CN209989863U - Excavator crushing fuel-saving control system and excavator - Google Patents
Excavator crushing fuel-saving control system and excavator Download PDFInfo
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- CN209989863U CN209989863U CN201920634739.6U CN201920634739U CN209989863U CN 209989863 U CN209989863 U CN 209989863U CN 201920634739 U CN201920634739 U CN 201920634739U CN 209989863 U CN209989863 U CN 209989863U
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Abstract
The utility model discloses an excavator crushing fuel-saving control system and an excavator, wherein the control system comprises a main pump, a main valve, a proportional overflow valve group, a pressure sensor, a crushing hammer, a controller, a foot valve, a flow-limiting electromagnetic valve group and a hydraulic oil tank; the main pump, the main valve, the proportional overflow valve bank, the pressure sensor, the breaking hammer, the foot valve, the flow-limiting electromagnetic valve bank and the hydraulic oil tank are communicated through a hydraulic pipeline; the pressure sensor, the controller and the current-limiting electromagnetic valve group are connected through an electric wire harness; the controller controls the proportional overflow valve bank and the current-limiting electromagnetic valve bank to correspondingly adjust the output current value after detecting the pressure signal of the pressure sensor, so that the overflow pressure and the flow of the excavator crushing oil-saving control system are controlled. The utility model discloses cancellation quartering hammer frequency modulation choke valve adopts the broken overflow valve of pressure self-adaptation regulation, reducible hydraulic system overflow and throttle loss. Under the condition of not influencing the striking efficiency of the crushing working condition, the aim of saving oil of the crushing system is fulfilled.
Description
Technical Field
The utility model relates to an excavator breakage fuel-saving control system and method, concretely relates to excavator has the broken hydraulic system and the control method of the function of economizing on fuel under broken operating mode, belongs to excavator technical field.
Background
Along with the continuous improvement of national requirements on safety and environmental protection in the fields of capital construction, mining and the like, the number of traditional blasting construction projects is continuously reduced, the number of excavator crushing projects is continuously increased, and the demand of the excavator with the crushing hammer is increased rapidly.
At present, in a traditional excavator crushing hydraulic system, the pressure of an overflow valve needs to be manually adjusted, and an actual excavator is under a crushing working condition, because different rock hardness and crushing hammers of different specifications are installed, the actually required system working pressure is changed under the crushing working condition, and the actually required working pressure is difficult to accurately judge for a general excavator operator. In addition, the traditional breaking hammer working excavator only works at a certain fixed gear, and the working flow of the system is constant and cannot be adjusted according to actual conditions.
Because the pressure and the flow of the traditional crushing system can not be adjusted adaptively, overflow loss is generated under the crushing working condition. In addition, the traditional crushing frequency is adjusted by adjusting the oil return frequency adjusting valve of the crushing hammer, so that throttling loss and overflow loss are caused, the oil consumption of the crushing working condition is increased, the actual operation is complicated, and the time consumption is long.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides an oil-saving control system and a control method for excavator crushing.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a crushing and oil-saving control system of an excavator comprises a main pump, a main valve, a proportional overflow valve bank, a pressure sensor, a crushing hammer, a controller, a foot valve, a flow-limiting electromagnetic valve bank and a hydraulic oil tank; the main pump, the main valve, the proportional overflow valve bank, the pressure sensor, the breaking hammer, the pedal valve, the flow-limiting electromagnetic valve bank and the hydraulic oil tank are communicated through a hydraulic pipeline; the pressure sensor, the controller and the current-limiting electromagnetic valve group are connected through an electric wire harness; the controller controls the proportional overflow valve bank and the current-limiting electromagnetic valve bank to correspondingly adjust the output current value after detecting the pressure signal of the pressure sensor, so that the overflow pressure and the flow of the excavator crushing oil-saving control system are controlled.
Furthermore, the proportional overflow valve group is an inverse proportional overflow valve, and a back pressure valve proportional overflow valve is integrated in the proportional overflow valve group.
Furthermore, the flow-limiting electromagnetic valve group is an inverse proportional pressure reducing valve, and a proportional pressure reducing valve and a shuttle valve are integrated in the flow-limiting electromagnetic valve group.
Furthermore, the controller is provided with an input port and two output ports, the input port is connected with the pressure sensor through an electric wire harness, and the two output ports are respectively connected with the proportional overflow valve bank and the flow-limiting electromagnetic valve bank through the electric wire harness.
An excavator comprises the excavator crushing oil-saving control system.
The utility model discloses beneficial effect:
the utility model discloses compare with traditional broken technique, cancel quartering hammer frequency modulation choke valve, but adopt the broken overflow valve of pressure self-adaptation regulation, reducible hydraulic system overflow and throttle loss to can the required pressure of quick matching broken hydraulic system and flow value. Under the condition of not influencing the striking efficiency of the crushing working condition, the aim of saving oil of the crushing system is fulfilled.
Drawings
Fig. 1 is a schematic diagram of a control system framework of the present invention;
in the figure: the hydraulic control system comprises a main pump 1, a main valve 2, a proportional overflow valve group 3, a pressure sensor 4, a breaking hammer 5, a controller 6, a foot valve 7, a flow-limiting electromagnetic valve group 8 and a hydraulic oil tank 9.
FIG. 2 is a schematic diagram of the control flow of the present invention;
FIG. 3 is a schematic diagram of a conventional crushing hydraulic system;
in the figure: a traditional mechanical overflow valve 10 and a frequency modulation throttle valve 11.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the crushing and oil-saving control system of the excavator comprises a main pump 1, a main valve 2, a proportional overflow valve group 3, a pressure sensor 4, a crushing hammer 5, a controller 6, a foot valve 7, a flow-limiting electromagnetic valve group 8 and a hydraulic oil tank 9; the main pump 1, the main valve 2, the proportional overflow valve group 3, the pressure sensor 4, the breaking hammer 5, the foot valve 7, the flow-limiting electromagnetic valve group 8 and the hydraulic oil tank 9 are communicated through hydraulic pipelines; the pressure sensor 4, the controller 6 and the flow-limiting electromagnetic valve group 8 are connected through an electric wire harness; the controller 6 controls the proportional overflow valve group 3 and the current-limiting electromagnetic valve group 8 to correspondingly adjust the output current value after detecting the pressure signal of the pressure sensor 4, so that the overflow pressure and the flow of the excavator crushing oil-saving control system are controlled.
The proportional overflow valve group 3 is an inverse proportional overflow valve, and the flow-limiting electromagnetic valve group 8 is an inverse proportional pressure reducing valve; the controller 6 is provided with an input port and two output ports, the input port is connected with the pressure sensor through an electric wire harness, and the two output ports are respectively connected with the proportional overflow valve group 3 and the flow-limiting electromagnetic valve group 8 through the electric wire harness; the control system is provided with a crushing mode, the controller is provided with an operation module in the crushing mode, and the controller control module controls the proportional overflow valve group 3 and the current-limiting electromagnetic valve group 8 to correspondingly adjust the output current value and control the overflow pressure and the flow of the system through operation by detecting the pressure signal of the pressure sensor 4.
The specific requirement is described in detail with reference to fig. 2, which is a control flow chart of the present invention:
the pressure value that the proportion overflow valves 3 set up initially is P, when the quartering hammer during operation, if proportion overflow valves 3 set up pressure low on the low side this moment, will produce the overflow, because the existence of back pressure valve, produces front and back pressure differential. The pressure signal is now transmitted via the pressure sensor 4 to the master controller 6. And the controller control module is used for calculating, changing corresponding current signals and transmitting the current signals to the proportional overflow valve group 3, and increasing the overflow pressure to a in each calculation. When the pressure value is less than 26MPa, circularly controlling; and when the pressure value is not less than 26MPa, the controller control module stops adjusting the overflow pressure of the proportional overflow valve group 3 at the moment, and the overflow pressure value is fixed. Meanwhile, the controller controls the module to operate, and the current value of the current-limiting electromagnetic valve group 8 is changed, so that the flow of the main pump 1 is reduced, and the flow value of the pump is reduced to b by each operation. When the pressure sensor has no pressure signal, the controller finishes the cycle operation at the moment, and the system is in a relative balance state. The whole system reduces overflow loss and has no throttling loss. It should be noted that the maximum relief pressure value of 26MPa is set according to the maximum use pressure of the breaking hammer of different manufacturers, and the value can be set according to actual conditions. For better illustrating the technical principles of the present invention, specific values are used for illustration.
In addition, particular emphasis is placed on integrating a back pressure valve proportional relief valve inside the proportional relief valve group 3, and integrating a proportional pressure reducing valve and a shuttle valve inside the flow-limiting solenoid valve group 8.
As a schematic diagram of a conventional crushing hydraulic system is given in fig. 3, the setting pressure of a conventional mechanical overflow valve 10 needs to be manually adjusted, and the actual working pressure of the system required under the crushing working condition of the actual excavator is changed due to different rock hardness and installation of crushing hammers of different specifications, so that it is difficult for a general excavator operator to accurately judge the actual required working pressure. Because the pressure and the flow of the traditional crushing system can not be adjusted adaptively, overflow loss is generated under the crushing working condition. In addition, the traditional crushing frequency is adjusted by adjusting the crushing hammer return oil frequency modulation throttle valve 11, so that throttling loss and overflow loss are caused, the oil consumption of the crushing working condition is increased, and the actual operation is complicated and long in time consumption.
The utility model discloses compare with traditional broken technique, cancel quartering hammer frequency modulation choke valve, but adopt the broken overflow valve of pressure self-adaptation regulation, reducible hydraulic system overflow and throttle loss to can the required pressure of quick matching broken hydraulic system and flow value. Under the condition of not influencing the striking efficiency of the crushing working condition, the aim of saving oil of the crushing system is fulfilled.
The utility model also provides an excavator, including the broken control system that economizes on fuel of aforementioned excavator.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (5)
1. The utility model provides an excavator breakage fuel saving control system which characterized in that: the hydraulic control system comprises a main pump, a main valve, a proportional overflow valve group, a pressure sensor, a breaking hammer, a controller, a foot valve, a flow-limiting electromagnetic valve group and a hydraulic oil tank;
the main pump, the main valve, the proportional overflow valve bank, the pressure sensor, the breaking hammer, the pedal valve, the flow-limiting electromagnetic valve bank and the hydraulic oil tank are communicated through a hydraulic pipeline;
the pressure sensor, the controller and the current-limiting electromagnetic valve group are connected through an electric wire harness; the controller controls the proportional overflow valve bank and the current-limiting electromagnetic valve bank to correspondingly adjust the output current value after detecting the pressure signal of the pressure sensor, so that the overflow pressure and the flow of the excavator crushing oil-saving control system are controlled.
2. The excavator crushing oil-saving control system according to claim 1, characterized in that: the proportional overflow valve group is an inverse proportional overflow valve, and a back pressure valve is integrated in the inverse proportional overflow valve.
3. The excavator crushing oil-saving control system according to claim 1, characterized in that: the flow-limiting electromagnetic valve group is an inverse proportional pressure reducing valve, and a proportional pressure reducing valve and a shuttle valve are integrated in the flow-limiting electromagnetic valve group.
4. The excavator crushing oil-saving control system according to claim 1, characterized in that: the controller is provided with an input port and two output ports, the input port is connected with the pressure sensor through an electric wire harness, and the two output ports are respectively connected with the proportional overflow valve bank and the flow-limiting electromagnetic valve bank through the electric wire harness.
5. An excavator, characterized in that: comprising the excavator crushing fuel saving control system of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920634739.6U CN209989863U (en) | 2019-05-06 | 2019-05-06 | Excavator crushing fuel-saving control system and excavator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920634739.6U CN209989863U (en) | 2019-05-06 | 2019-05-06 | Excavator crushing fuel-saving control system and excavator |
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| Publication Number | Publication Date |
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| CN209989863U true CN209989863U (en) | 2020-01-24 |
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| CN201920634739.6U Active CN209989863U (en) | 2019-05-06 | 2019-05-06 | Excavator crushing fuel-saving control system and excavator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005013A (en) * | 2019-05-06 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of excavation crusher machine fuel-saving control system, control method and excavator |
| CN115434381A (en) * | 2022-09-02 | 2022-12-06 | 苏州世工机械有限公司 | Automatic nitrogen of frequency conversion explodes formula hydraulic breaking hammer |
-
2019
- 2019-05-06 CN CN201920634739.6U patent/CN209989863U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005013A (en) * | 2019-05-06 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of excavation crusher machine fuel-saving control system, control method and excavator |
| CN110005013B (en) * | 2019-05-06 | 2024-02-27 | 徐州徐工挖掘机械有限公司 | Crushing and oil-saving control system and method for excavator and excavator |
| CN115434381A (en) * | 2022-09-02 | 2022-12-06 | 苏州世工机械有限公司 | Automatic nitrogen of frequency conversion explodes formula hydraulic breaking hammer |
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