阅读说明：本技术 一种取样钻机发动机转速控制方法 (Method for controlling rotating speed of engine of sampling drilling machine ) 是由 严忠 于 2020-12-31 设计创作，主要内容包括：本发明提供一种取样钻机发动机转速控制方法,控制硬件包括控制器以及分别和控制器相连的发动机转速控制开关、显示器、无线遥控器、压力开关；发动机转速的控制方法包括自动调速模式,自动调速模式包括以下步骤：S10、工作过程中,在液压手柄动作时；S20、负载敏感泵根据LS口压力自动调节排量以满足负载需求；S30、检测LS压力；S40、根据步骤S30中的判断结果,调整发动机的转速。本发明提供了一种取样钻机发动机转速控制方法,不仅能自动调节发动机转速,减少了人工操作的次数及时间,提高了工作效率；而且能避免发动机长时间无负载运行,降低油耗,实现节能及降低施工成本。(The invention provides a method for controlling the rotating speed of an engine of a sampling drilling machine.A control hardware comprises a controller, and an engine rotating speed control switch, a display, a wireless remote controller and a pressure switch which are respectively connected with the controller; the control method of the engine rotating speed comprises an automatic speed regulation mode, wherein the automatic speed regulation mode comprises the following steps: s10, in the working process, when the hydraulic handle acts; s20, automatically adjusting the displacement of the load sensitive pump according to the LS port pressure to meet the load requirement; s30, detecting the LS pressure; and S40, adjusting the rotation speed of the engine according to the judgment result in the step S30. The invention provides a sampling drilling machine engine rotating speed control method, which not only can automatically adjust the rotating speed of an engine, but also can reduce the times and time of manual operation and improve the working efficiency; and the engine can be prevented from running without load for a long time, the oil consumption is reduced, the energy is saved, and the construction cost is reduced.)

1. A sampling drilling machine engine speed control method is characterized in that:

the control hardware comprises a controller, and an engine rotating speed control switch, a display, a wireless remote controller and a pressure switch which are respectively connected with the controller;

the control method of the engine rotating speed comprises an automatic speed regulation mode, wherein the automatic speed regulation mode comprises the following steps:

s10, in the working process, when the hydraulic handle acts, the maximum working pressure LS of the system is obtained through comparison of the shuttle valve, and the pressure LS is connected with an LS port of the load sensitive pump;

s20, the load-sensitive pump automatically adjusts the displacement according to the LS port pressure to meet the load demand, and a constant pressure difference exists between the system output pressure and the load;

s30, detecting the LS pressure, and judging whether the drilling machine acts according to the detection structure;

and S40, adjusting the rotation speed of the engine according to the judgment result in the step S30.

2. The method of claim 1, wherein the method of controlling the engine speed further comprises a manual throttle mode, and the manual throttle mode has a higher priority than the automatic throttle mode, the manual throttle mode comprising:

long press acceleration: after the controller receives the long press rotating speed adding signal, the controller controls the rotating speed of the engine to increase according to the preset interval time and the preset amplitude until the highest rotating speed of the engine;

long press deceleration: after the controller receives the long press rotating speed reduction signal, the controller controls the rotating speed of the engine to be reduced according to the preset interval time and the preset amplitude until the engine rotates at the idle speed;

double-click acceleration: the controller detects the rotating speed of the speed regulating switch and sends an acceleration control signal after a switch double-click signal is added, and the engine is automatically regulated to the working rotating speed;

double-click deceleration: the controller sends a deceleration control signal after detecting a double-click signal of a rotating speed reduction switch of the speed regulation switch, and the engine is automatically regulated to an idle speed.

3. The method as claimed in claim 1, wherein the engine speed control switch is a physical element or a display touch screen button or a display function button.

4. The method as claimed in claim 1, wherein the display is used for displaying engine speed and default engine speed.

5. The method as claimed in claim 2, wherein the predetermined interval time is 0.2s in the long press acceleration and the long press deceleration.

6. The method as claimed in claim 2, wherein the predetermined amplitude is 25 revolutions in the long press acceleration and the long press deceleration.

7. The method of claim 1, wherein the pressure switch is replaced with a pressure sensor.

Technical Field

The invention relates to the field of drilling machine control, in particular to a method for controlling the rotating speed of an engine of a sampling drilling machine.

Background

In the construction process of the drilling machine, when one drill rod is drilled, sampling and other operations which do not need the action of the drilling machine are needed. In order to save fuel and provide a more comfortable sound environment, the engine speed is generally adjusted to an idle speed state when the drilling machine does not operate, and the engine speed is adjusted to a working speed when the drilling machine needs to operate.

In the prior art, the control input signals are divided into a switch type control and an analog type control according to the engine speed.

As for the switching control method, there are mainly the following control methods. Firstly, an accelerator switch signal of a local operation panel is connected to an input port of a controller, a wireless remote controller receiver communicates with the controller through a CAN bus, the controller receives an acceleration and deceleration speed signal of the input port or the CAN bus, and after logical judgment, the controller transmits the signal to an engine through a CAN bus signal or an analog voltage output mode so as to control the rotating speed of the engine. The second is a touch display screen or a display soft key mode. The engine speed acceleration and deceleration button is operated on the display, the display directly controls the engine speed through a CAN bus, or the display transmits a control signal to the controller, and the controller controls the engine speed. Thirdly, the panel adds and subtracts the rotational speed switch signal, and the relay of the remote controller outputs the add and subtract signal to directly enter the controller.

For the analog quantity control mode, a main throttle potentiometer signal and a remote throttle signal are mainly used for entering a controller or an ECM, and the two throttles are switched through the ECM remote throttle signal.

In order to save the layout space of a panel and control simplicity of speed regulation at multiple positions, the conventional sampling drilling machine generally does not adopt an idle switch mode to switch the idle speed and the working speed of an engine.

In order to save energy, the drilling machine is basically a load sensitive system consisting of a hydraulic proportional multi-way valve and a variable pump. The main drilling action, the amplitude variation action and the like are basically in the modes of hydraulic handle operation. The hydraulic system collects the pressure of each valve block LS and sends the pressure to the LS port of the variable pump through the shuttle valve.

The prior art has the following defects: only has the manual speed regulation function, and the accelerator needs to be manually increased or reduced each time the drilling machine operates and stops operating; manual engine speed regulation needs to look over an engine speed meter to regulate to a set speed, needs manual observation and multiple times of regulation, and is inconvenient to observe the speed when the sight is not good or the remote wireless operation is carried out.

Disclosure of Invention

The invention aims to provide a method for quickly and automatically adjusting the rotating speed of an engine. In the automatic mode, when the drilling machine acts, the rotating speed of the engine is automatically and rapidly set as the working rotating speed; when the drill stops operating, the engine speed is automatically set to the idling speed. The engine can be quickly set to the working speed and the idling speed in the manual mode.

The invention provides a method for controlling the rotating speed of an engine of a sampling drilling machine,

the control hardware comprises a controller, and an engine rotating speed control switch, a display, a wireless remote controller and a pressure switch which are respectively connected with the controller;

the control method of the engine rotating speed comprises an automatic speed regulation mode, wherein the automatic speed regulation mode comprises the following steps:

s10, in the working process, when the hydraulic handle acts, the maximum working pressure LS of the system is obtained through comparison of the shuttle valve, and the pressure LS is connected with an LS port of the load sensitive pump;

s20, the load-sensitive pump automatically adjusts the displacement according to the LS port pressure to meet the load demand, and a constant pressure difference exists between the system output pressure and the load;

s30, detecting the LS pressure, and judging whether the drilling machine acts according to the detection structure;

and S40, adjusting the rotation speed of the engine according to the judgment result in the step S30.

As an improvement of the invention, the control method of the engine speed also comprises a manual speed regulation mode, the priority of the manual speed regulation mode is higher than that of the automatic speed regulation mode, and the manual speed regulation mode comprises the following steps:

long press acceleration: after the controller receives the long press rotating speed adding signal, the controller controls the rotating speed of the engine to increase according to the preset interval time and the preset amplitude until the highest rotating speed of the engine;

long press deceleration: after the controller receives the long press rotating speed reduction signal, the controller controls the rotating speed of the engine to be reduced according to the preset interval time and the preset amplitude until the engine rotates at the idle speed;

double-click acceleration: the controller detects the rotating speed of the speed regulating switch and sends an acceleration control signal after a switch double-click signal is added, and the engine is automatically regulated to the working rotating speed;

double-click deceleration: the controller sends a deceleration control signal after detecting a double-click signal of a rotating speed reduction switch of the speed regulation switch, and the engine is automatically regulated to an idle speed.

As an improvement of the invention, the engine speed control switch is a solid element or a display touch screen key or a display function key.

As an improvement of the invention, the display content of the display is the engine speed and the default working speed of the engine.

As a modification of the present invention, the preset interval time is 0.2s in the long press acceleration and the long press deceleration.

As a modification of the present invention, the predetermined width is 25 revolutions in the long press acceleration and the long press deceleration.

As a modification of the invention, the pressure switch is replaced by a pressure sensor.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a hardware configuration for engine speed control according to the present invention.

The components in the figure are:

1-a controller, 2-a display, 3-a pressure switch, 4, a remote controller transmitter, 5 and a remote controller receiver;

a-engine speed plus switch signal, B-engine speed minus switch signal, C-speed control signal, D-engine torque percentage.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1, a method for controlling the rotation speed of an engine of a sampling drilling machine,

the control hardware comprises a controller, and an engine rotating speed control switch, a display, a wireless remote controller and a pressure switch which are respectively connected with the controller;

the control method of the engine rotating speed comprises an automatic speed regulation mode, wherein the automatic speed regulation mode comprises the following steps:

s10, in the working process, when the hydraulic handle acts, the maximum working pressure LS of the system is obtained through comparison of the shuttle valve, and the pressure LS is connected with an LS port of the load sensitive pump;

s20, the load-sensitive pump automatically adjusts the displacement according to the LS port pressure to meet the load demand, and a constant pressure difference exists between the system output pressure and the load;

s30, detecting the LS pressure, and judging whether the drilling machine acts according to the detection structure;

and S40, adjusting the rotation speed of the engine according to the judgment result in the step S30.

As an embodiment of the invention, the control method of the engine speed further comprises a manual speed regulation mode, the priority of the manual speed regulation mode is higher than that of the automatic speed regulation mode, and the manual speed regulation mode comprises the following steps:

long press acceleration: after the controller receives the long press rotating speed adding signal, the controller controls the rotating speed of the engine to increase according to the preset interval time and the preset amplitude until the highest rotating speed of the engine;

long press deceleration: after the controller receives the long press rotating speed reduction signal, the controller controls the rotating speed of the engine to be reduced according to the preset interval time and the preset amplitude until the engine rotates at the idle speed;

double-click acceleration: the controller detects the rotating speed of the speed regulating switch and sends an acceleration control signal after a switch double-click signal is added, and the engine is automatically regulated to the working rotating speed;

double-click deceleration: the controller sends a deceleration control signal after detecting a double-click signal of a rotating speed reduction switch of the speed regulation switch, and the engine is automatically regulated to an idle speed.

As an embodiment of the present invention, the engine speed control switch is a physical element or a display touch screen button or a display function button.

As an embodiment of the invention, the display content of the display is the engine speed and the default working speed of the engine.

As an embodiment of the present invention, the preset interval time is 0.2s in the long press acceleration and the long press deceleration.

As an embodiment of the present invention, the preset amplitude is 25 rotations in the long press acceleration and the long press deceleration.

As an embodiment of the present invention, the pressure switch is replaced with a pressure sensor.

The working principle of the technical scheme is as follows:

1. system hardware

To achieve the above object, the present invention relates to hardware including:

engine speed increasing/decreasing switch, controller, display, wireless remote controller, pressure switch. The up/down switch for the engine speed may be a physical element or a display touch screen button or a display function button.

The engine speed and the default operating speed of the engine can be displayed on the display.

2. Principle of automatic speed regulation

When the hydraulic handle acts, the maximum working pressure LS of the system is obtained through comparison of the shuttle valve, and the pressure LS is connected with the LS port of the load sensitive pump. The load-sensitive pump automatically adjusts the pump displacement according to the LS port pressure to meet the load requirement, a constant pressure difference is formed between the output pressure of the system and the load, and whether the drilling machine acts or not can be directly judged by detecting the LS pressure.

Due to the pressure variations that are always loaded, the displacement of the pump is adjusted, which in turn affects the engine torque percentage. The LS pressure is always chronologically earlier than the percentage change in torque obtained from the engine.

Because of the hysteresis characteristics of the pressure switch, the pressure is sensed at the LS port and the reset setting of the pressure switch should be just enough to avoid the standby pressure (typically around 2 mpa) when the device is not active. Thus the subsystem is most sensitive and free of erroneous operation.

The rotating speed of the engine can be automatically controlled directly by detecting the LS pressure, and the torque percentage is used as an auxiliary and redundant detection scheme.

Automatic governing by LS pressure sensing controls engine speed only when LS pressure changes so that manual governing can preferentially control engine speed.

3. Principle of manual speed regulation

In the occasions requiring manual speed regulation, such as debugging, maximum speed testing and the like, the speed regulation can be realized by manual speed regulation. The priority of manual operation is higher than the priority of automatic speed regulation.

Adding signals according to the rotating speed for a long time, and increasing the rotating speed of the engine (such as 25 revolutions) according to certain interval time (such as 0.2S) and amplitude until the highest rotating speed of the engine; and the signal is reduced according to the rotating speed for a long time, and the rotating speed of the engine is reduced according to certain interval time and amplitude until the engine rotates at the idle speed.

Detecting the rotating speed of the speed regulating switch and a switch double-click signal, and automatically regulating to the working rotating speed; and detecting a double-click signal of a rotating speed reducing switch of the speed regulating switch, and automatically regulating to an idle speed.

The beneficial effects of the above technical scheme are that:

the invention provides a sampling drilling machine engine rotating speed control method, which not only can automatically adjust the rotating speed of an engine, but also can reduce the times and time of manual operation and improve the working efficiency; and the engine can be prevented from running without load for a long time, the oil consumption is reduced, the energy is saved, and the construction cost is reduced.

1. In a hydraulic system, LS pressure detection is added at an LS port of a load sensitive pump and used for judging whether the whole machine moves or not, and then an engine is controlled to adjust to a working rotating speed or an idle speed;

2. the rotating speed of the engine can be quickly adjusted by double-clicking the rotating speed increasing and decreasing switch.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.