CN202831052U - Hydraulic pressure excavating machine controlling system based on constant power and variable power - Google Patents
Hydraulic pressure excavating machine controlling system based on constant power and variable power Download PDFInfo
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- CN202831052U CN202831052U CN 201220515101 CN201220515101U CN202831052U CN 202831052 U CN202831052 U CN 202831052U CN 201220515101 CN201220515101 CN 201220515101 CN 201220515101 U CN201220515101 U CN 201220515101U CN 202831052 U CN202831052 U CN 202831052U
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Abstract
The utility model discloses a hydraulic pressure excavating machine controlling system based on constant power and variable power. The hydraulic pressure excavating machine controlling system based on the constant power and the variable power comprises an electronic controlled motor, a variable hydraulic pressure pump, a chief controlling device, a pressure sensor, a speed rotating sensor and a proportional electromagnetic valve. Corresponding fine regulating electric currents are output by the overall controlling device through a testing of sizes of a negative feedback pressure according to a rotating speed of the motor, oil injecting quantity every cycle of an oil injecting pump and the negative feedback pressure towards the proportional electromagnetic valve. The proportional electromagnetic valve is installed on a variable pump power regulating hydraulic pressure circuit. An opening degree of a valve of the proportional electromagnetic valve is regulated.Size of an sloped angle of the variable pump sloped plate is regulated. Discharging capacity of the hydraulic pressure pump is changed. The fine regulating electric currents are output to the electronic controlling motor to change the oil injecting quantity of the motor. Different power is output. A coordinating control between the constant power and the variable power of the hydraulic pressure excavating machine is realized.
Description
Technical field
The utility model relates to a kind of Control System of Hydraulic Excavator, is specifically related to a kind of based on permanent power and the Control System of Hydraulic Excavator that becomes power.
Background technology
The characteristics that the hydraulic power of hydraulic crawler excavator namely excavates load are that saltus step is unstable, and very large with the actual condition relation, and the power stage of different operating modes requires different.Rationally utilize the power of motor to satisfy the digging operation demand, can improve on the one hand the operating efficiency of excavator, also can realize energy-conservation purpose on the other hand.
At present, excavator excavates before the operation, must select power mode according to the operating mode of operating area and the characteristic of excavator by operator, after power mode is selected, whole working cycles is all controlled take this pattern as benchmark, do not consider that the different corresponding power demands of working stage are also different in the hydraulic crawler excavator work cycle, same excavation regions may exist simultaneously and loosens the soil and two kinds of soil of pan soil, loosen the soil and excavate the pattern that may be fit to current selected, and the pan soil excavation might be not suitable for current pattern.Operator can not can only be estimated total operating mode at any time according to the frequent switch mode of the variation of operating mode, and rule of thumb select a suitable power mode and throttle position.After reaching setting power in the mining process, increase with load pressure, flow reduces, and operating rate slows down, and affects the performance of excavator overall performance, has reduced operating efficiency.
Summary of the invention
Problem for above-mentioned prior art existence, it is a kind of based on permanent power and the hydraulic crawler excavator control method system that becomes power that the utility model provides, under the setting power pattern, by becoming power control, so that the power of motor satisfies job requirements, thereby reach the purpose that improves operating efficiency.
To achieve these goals, the technical solution adopted in the utility model is: based on permanent power and the Control System of Hydraulic Excavator that becomes power, this control system comprises:
Be used for driving the electric-control motor of volume adjustable hydraulic pump operation;
Under the dynamic action of electric-control motor operation and in running the volume adjustable hydraulic pump of the valve opening Displacement Regulation of passing ratio electromagnetic valve;
Detect the size of negative-feedback pressure, according to engine speed, the every circulating fuel injection quantity of injection pump, negative-feedback pressure, export corresponding fine-adjusting current to the proportion magnetic valve that is installed on variable pump self the power adjusting hydraulic circuit, change simultaneously the master controller of Engine Injection Mass to electric-control motor output fine-adjusting current;
Be used for measuring the pressure sensor of degenerative pressure and main pump oil-out pressure;
The speed probe that is used for the actual speed of measurement electric-control motor;
According to the size of the fine-adjusting current that receives, tune up the proportion magnetic valve of the aperture ratio of self valve;
Proportion magnetic valve be installed on the volume adjustable hydraulic pump power adjusting hydraulic circuit and and the master controller electrical connection, speed probe is electrically connected between electric-control motor and the master controller, volume adjustable hydraulic pump and electric-control motor mechanical connection, pressure sensor is electrically connected on master controller.
Operating principle of the present utility model is, master controller is by detecting the size of negative-feedback pressure, according to engine speed, the every circulating fuel injection quantity of injection pump, negative-feedback pressure, export corresponding fine-adjusting current to the proportion magnetic valve that is installed on variable pump self the power adjusting hydraulic circuit, regulate the aperture of proportion magnetic valve self valve, thereby the size of regulated variable pump swashplate angle, change hydraulic pump discharge, change Engine Injection Mass to electric-control motor output fine-adjusting current simultaneously, the output different capacity is realized the permanent power of hydraulic crawler excavator and is become power coordination control.
The beneficial effects of the utility model are: by becoming power control, can finish certain semiautomatic working, reduce the requirement to the operator qualification, improve operating efficiency.
Description of drawings
Fig. 1 engine power is regulated schematic diagram;
Fig. 2 the utility model control system connects and the work schematic diagram.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2: the utility model comprises for the electric-control motor that drives the volume adjustable hydraulic pump operation;
Under the dynamic action of electric-control motor operation and in running the volume adjustable hydraulic pump of the valve opening Displacement Regulation of passing ratio electromagnetic valve;
Detect the size of negative-feedback pressure, according to engine speed, the every circulating fuel injection quantity of injection pump, negative-feedback pressure, export corresponding fine-adjusting current to the proportion magnetic valve that is installed on variable pump self the power adjusting hydraulic circuit, change simultaneously the master controller of Engine Injection Mass to electric-control motor output fine-adjusting current;
Be used for measuring the pressure sensor of degenerative pressure and main pump oil-out pressure;
The speed probe that is used for the actual speed of measurement electric-control motor;
According to the size of the fine-adjusting current that receives, tune up the proportion magnetic valve of the aperture ratio of self valve;
Proportion magnetic valve be installed on the volume adjustable hydraulic pump power adjusting hydraulic circuit and and the master controller electrical connection, speed probe is electrically connected between electric-control motor and the master controller, volume adjustable hydraulic pump and electric-control motor mechanical connection, pressure sensor is electrically connected on master controller.
Master controller is by detecting the size of negative-feedback pressure, according to electric-control motor rotating speed, the every circulating fuel injection quantity of volume adjustable hydraulic pump, negative-feedback pressure, export corresponding fine-adjusting current to the proportion magnetic valve that is installed on volume adjustable hydraulic pump self the power adjusting hydraulic circuit, regulate the aperture of proportion magnetic valve self valve, thereby the size of regulated variable hydraulic pump swashplate angle, change variable displacercent pump, change the electric-control motor distributive value to electric-control motor output fine-adjusting current simultaneously, the output different capacity is realized the permanent power of hydraulic crawler excavator and is become power coordination control.
The specific works step of this control device is: set up the power stage table according to known electric-control motor rotating speed, negative-feedback pressure and electric-control motor distributive value constant power performance data, the output different capacity is to satisfy different operating mode demands;
When hydraulic crawler excavator is worked, be target current with proportion magnetic valve 1 current value adjustment of volume adjustable hydraulic pump under corresponding rotating speed of hydraulic crawler excavator, so that the power output of the power of volume adjustable hydraulic pump and motor is complementary;
Engine power is as shown in Figure 1 regulated schematic diagram, do in the work process at hydraulic crawler excavator, after the absorbed power of volume adjustable hydraulic pump reaches setting power, when load pressure continues to increase, master controller is according to predefined power stage table, increase the electric-control motor distributive value, improve the power output under the rotating speed of target;
Master controller reduces the output current of proportion magnetic valve 2 according to the power stage table simultaneously, so that the discharge capacity of volume adjustable hydraulic pump obtains increasing, increases the power output of pump, makes itself and electric-control motor power output think coupling, realizes becoming power control;
When bearing power reaches or during near the peak power output of electric-control motor, the output current of master controller control ratio electromagnetic valve 2 is realized permanent power overload protection.
Claims (1)
1. based on permanent power and the Control System of Hydraulic Excavator that becomes power, it is characterized in that this control system comprises:
Be used for driving the electric-control motor of volume adjustable hydraulic pump operation;
Under the dynamic action of electric-control motor operation and in running the volume adjustable hydraulic pump of the valve opening Displacement Regulation of passing ratio electromagnetic valve;
Detect the size of negative-feedback pressure, according to engine speed, the every circulating fuel injection quantity of injection pump, negative-feedback pressure, export corresponding fine-adjusting current to the proportion magnetic valve that is installed on variable pump self the power adjusting hydraulic circuit, change simultaneously the master controller of Engine Injection Mass to electric-control motor output fine-adjusting current;
Be used for measuring the pressure sensor of degenerative pressure and main pump oil-out pressure;
The speed probe that is used for the actual speed of measurement electric-control motor;
According to the size of the fine-adjusting current that receives, tune up the proportion magnetic valve of the aperture ratio of self valve;
Proportion magnetic valve be installed on the volume adjustable hydraulic pump power adjusting hydraulic circuit and and the master controller electrical connection, speed probe is electrically connected between electric-control motor and the master controller, volume adjustable hydraulic pump and electric-control motor mechanical connection, pressure sensor is electrically connected on master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515101 CN202831052U (en) | 2012-09-29 | 2012-09-29 | Hydraulic pressure excavating machine controlling system based on constant power and variable power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515101 CN202831052U (en) | 2012-09-29 | 2012-09-29 | Hydraulic pressure excavating machine controlling system based on constant power and variable power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202831052U true CN202831052U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220515101 Expired - Lifetime CN202831052U (en) | 2012-09-29 | 2012-09-29 | Hydraulic pressure excavating machine controlling system based on constant power and variable power |
Country Status (1)
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| CN (1) | CN202831052U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397678A (en) * | 2013-08-13 | 2013-11-20 | 南京工业大学 | Energy-saving system and method for power matching between engine and hydraulic pump |
| CN104405003A (en) * | 2014-10-28 | 2015-03-11 | 上海华兴数字科技有限公司 | Pump and valve synchronous control system |
| CN104405707A (en) * | 2014-10-21 | 2015-03-11 | 恒天创丰重工有限公司 | Multi-pump hydraulic system and power control method thereof |
| CN104594877A (en) * | 2015-01-22 | 2015-05-06 | 无锡市钻通工程机械有限公司 | Rotary overspeed-preventing electronic control system of trenchless pipe-laying drilling machine |
| CN113357028A (en) * | 2021-06-29 | 2021-09-07 | 上海华兴数字科技有限公司 | Excavator control method and device, electronic equipment and storage medium |
| CN113697673A (en) * | 2021-08-31 | 2021-11-26 | 湖南三一中型起重机械有限公司 | Hydraulic control method and device and crane |
-
2012
- 2012-09-29 CN CN 201220515101 patent/CN202831052U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397678A (en) * | 2013-08-13 | 2013-11-20 | 南京工业大学 | Energy-saving system and method for power matching between engine and hydraulic pump |
| CN104405707A (en) * | 2014-10-21 | 2015-03-11 | 恒天创丰重工有限公司 | Multi-pump hydraulic system and power control method thereof |
| CN104405707B (en) * | 2014-10-21 | 2016-06-01 | 恒天创丰重工有限公司 | A kind of split-pump hydraulic system and Poewr control method thereof |
| CN104405003A (en) * | 2014-10-28 | 2015-03-11 | 上海华兴数字科技有限公司 | Pump and valve synchronous control system |
| CN104594877A (en) * | 2015-01-22 | 2015-05-06 | 无锡市钻通工程机械有限公司 | Rotary overspeed-preventing electronic control system of trenchless pipe-laying drilling machine |
| CN113357028A (en) * | 2021-06-29 | 2021-09-07 | 上海华兴数字科技有限公司 | Excavator control method and device, electronic equipment and storage medium |
| CN113357028B (en) * | 2021-06-29 | 2022-09-27 | 上海华兴数字科技有限公司 | Excavator control method and device, electronic equipment and storage medium |
| CN113697673A (en) * | 2021-08-31 | 2021-11-26 | 湖南三一中型起重机械有限公司 | Hydraulic control method and device and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |