阅读说明：本技术 一种旋挖钻机的智能怠速系统 (Intelligent idling system of rotary drilling rig ) 是由 罗瑶 黎起富 滕召金 湛良传 马少焱 宁焕 于 2020-12-29 设计创作，主要内容包括：本发明提供一种旋挖钻机的智能怠速系统,包括梭阀组类怠速识别模块、解锁类怠速识别模块、切换类怠速识别模块、动作按钮类怠速识别模块和电气控制器,这些模块均将怠速识别信号输入到电气控制器,电气控制器接收各模块识别信号并转化成输出信号至发动机,梭阀组类怠速识别模块包括动力头先导部件、主卷扬先导部件和加压先导部件,解锁类怠速识别模块包括行走解锁按钮、平台回转解锁按钮和桅杆调垂解锁按钮,切换类怠速识别模块包括变幅切换按钮和副卷扬切换按钮,动作按钮类怠速识别模块包括履带油缸伸展按钮和履带油缸收缩按钮。本发明系统中仅需五个梭阀即可完成旋挖钻机的自动怠速工作。本发明提供的自动怠速系统成本低,系统故障率低。(The invention provides an intelligent idle speed system of a rotary drilling rig, which comprises a shuttle valve group idle speed identification module, an unlocking idle speed identification module, a switching idle speed identification module, an action button idle speed identification module and an electric controller, wherein idle speed identification signals are input into the electric controller by the modules, the electric controller receives the identification signals of the modules and converts the identification signals into output signals to an engine, the shuttle valve group idle speed identification module comprises a power head pilot component, a main winch pilot component and a pressurization pilot component, the unlocking idle speed identification module comprises a walking unlocking button, a platform rotation unlocking button and a mast verticality adjusting unlocking button, the switching idle speed identification module comprises a luffing switching button and an auxiliary winch switching button, and the action button idle speed identification module comprises a crawler cylinder stretching button and a crawler cylinder shrinking button. According to the system, the automatic idling operation of the rotary drilling rig can be completed only by five shuttle valves. The automatic idling system provided by the invention has low cost and low system failure rate.)

1. The utility model provides an intelligent idle speed system of rotary drilling rig, is used for rotary drilling rig, including shuttle valve group class idle speed identification module (1), unblock class idle speed identification module (2), switch class idle speed identification module (3), action button class idle speed identification module (4) and electric controller (5), idle speed identification signal input to electric controller (5) is gone into in shuttle valve group class idle speed identification module (1), unblock class idle speed identification module (2), switch class idle speed identification module (3) and action button class idle speed identification module (4), electric controller (5) receive each module identification signal and convert output signal to engine (6), shuttle valve group class idle speed identification module (1) is including pilot part (11), main hoist pilot part (12) and pressurization pilot part (13), unblock class idle speed identification module (2) are including walking unblock button (21), The platform rotation unlocking button (22) and the mast verticality adjusting unlocking button (23), the switching type idle speed identification module (3) comprises a luffing switching button (31) and an auxiliary hoisting switching button (32), and the action button type idle speed identification module (4) comprises a track oil cylinder extension button (41) and a track oil cylinder contraction button (42).

2. The intelligent idling system of claim 1, wherein the electrical controller (5) is a programmable controller that receives the module identification signals and converts them into output signals to the engine (6) for implementing engine speed control.

3. The intelligent idle system of claim 1 or 2, characterized in that the shuttle valve group type idle speed identification module (1) further comprises a shuttle valve group (14) and a pressure switch (15), the shuttle valve group (14) comprises a shuttle valve I (141), a shuttle valve II (142), a shuttle valve III (143), a shuttle valve IV (144), a shuttle valve V (145), six oil inlets A1-A6 and six oil outlets B1-B6, the oil inlets A1, A2 and the oil outlets B1, B2 are all used for connecting the powerhead pilot component (11), the oil inlets A3, A4 and the oil outlets B3, B4 are all used for connecting the main hoisting pilot component (12), the oil inlets A5, A6 and the oil outlets B5, B6 are all used for connecting the pressurization pilot component (13), the shuttle valve I (141) is arranged between the oil inlet A1 and the A2, and the shuttle valve II (142) is arranged between the A3 and the oil outlet 4, the shuttle valve III (143) is arranged between the oil inlets A5 and A6, the shuttle valve IV (144) is used for being connected and arranged between any two shuttle valves of the three shuttle valves I (141) to III (143), the shuttle valve V (145) is used for being connected and arranged between the other shuttle valve of the three shuttle valves I (141) to III (143) and the shuttle valve IV (144), the shuttle valve V (145) is connected with the pressure switch (15) through the oil outlet B7, and the pressure switch (15) is connected with the electric controller (5).

Technical Field

The invention belongs to the field of engineering machinery, and particularly relates to an engine rotating speed control system of a rotary drilling rig.

Background

The rotary drilling rig is provided with an automatic engine idling system, namely when an engine of the rotary drilling rig does not shut down and a hydraulic system does not work, the engine needs to be in a low idling state, but when the hydraulic system works, the rotating speed of the engine needs to be increased, so that fuel consumption can be reduced, and the service lives of the engine and a hydraulic element are prolonged. Therefore, when the hydraulic system works and does not work, a shuttle valve group is generally designed on the pilot of the hydraulic system, and a pressure signal is extracted through a pressure switch to serve as an identification signal of an automatic idling system of an electric system controller;

actions of the rotary drilling rig generally comprise a power head, a main winch, pressurization, walking, platform rotation, mast verticality adjustment, amplitude variation, an auxiliary winch, extension of a crawler oil cylinder and contraction of the crawler oil cylinder, and if all the actions take pilot pressure signals through shuttle valves, a shuttle valve group can only extract the pilot pressure signals of all the actions through 20 shuttle valves. Therefore, the shuttle valve group is high in cost, complex in structure and poor in maintainability.

Chinese patent CN201520191640 discloses an automatic idle speed control system of a rotary drilling rig based on detection of outlet pressure of a hydraulic pump, which comprises a main controller, a pressure sensor, an automatic idle speed enabling switch, an engine controller ECU and an accelerator system, wherein the pressure sensor and the automatic idle speed enabling switch are connected with an input end of the main controller; the main controller is connected with an engine controller ECU; the engine controller ECU is connected with the accelerator system; the main controller receives a hydraulic pump outlet pressure signal detected by the pressure sensor, a current throttle signal sent by the engine controller ECU and an automatic idle speed enabling switch signal, processes and judges the signals, sends different control instructions to the engine controller ECU, and the engine controller ECU controls the throttle opening according to the instructions. The utility model discloses a substitute the pilot pressure that comes from the shuttle valves with the outlet pressure of hydraulic pump, reduced the use of hydraulic system shuttle valve, hydraulic line arranges simply, has reduced the fault point.

Chinese patent CN201020294447 discloses an automatic idle speed control system of a rotary drilling rig. The control system comprises a controller, a pressure sensor, an accelerator potentiometer, an automatic idle speed enabling switch and an accelerator system of the engine, wherein the accelerator potentiometer, the pressure sensor and the automatic idle speed enabling switch are connected with the input end of the controller, and the output end of the controller is connected with the accelerator system of the engine; the throttle system of the engine is a controller ECM of the engine; or a throttle motor system of the engine. The automatic idling system directly utilizes the existing pressure sensor and controller, and reduces the use of components of the hydraulic system, namely shuttle valves of the hydraulic system. The advantages are that: 1. the structure is simple, and the installation is convenient; 2. the performance is reliable, and fault points are reduced; 3. saving cost and reducing energy consumption. The idle system of the above patent still has a large intelligent lift space.

Therefore, a new intelligent idle speed system of the rotary drilling rig is needed in the art.

Disclosure of Invention

The invention provides an intelligent idle speed system of a rotary drilling rig, which is used for the rotary drilling rig and comprises a shuttle valve group idle speed identification module, an unlocking idle speed identification module, a switching idle speed identification module, an action button idle speed identification module and an electric controller, wherein the shuttle valve group idle speed identification module (1), the unlocking idle speed identification module (2), the switching idle speed identification module (3) and the action button idle speed identification module (4) input idle speed identification signals into the electric controller, the electric controller receives the identification signals of the modules and converts the identification signals into output signals to an engine, the shuttle valve group idle speed identification module comprises a power head pilot component, a main hoisting pilot component and a pressurizing pilot component, the unlocking idle speed identification module comprises a walking unlocking button, a platform rotation unlocking button and a mast verticality adjusting unlocking button, the switching idle speed identification module comprises a luffing switching button and a secondary hoisting switching button, the action button type idle speed identification module comprises a track oil cylinder extension button and a track oil cylinder contraction button.

In a specific embodiment, the electric controller (5) is a programmable controller, receives each module identification signal and converts the module identification signal into an output signal to the engine (6) for realizing the rotation speed control of the engine. In the invention, the engine 6 controls the size of the accelerator of the rotary drilling rig.

In a specific embodiment, the shuttle valve group type idle speed identification module (1) further comprises a shuttle valve group (14) and a pressure switch (15), wherein the shuttle valve group (14) comprises a shuttle valve I (141), a shuttle valve II (142), a shuttle valve III (143), a shuttle valve IV (144), a shuttle valve V (145), six oil inlets A1-A6 and six oil outlets B1-B6, the oil inlets A1, A2 and the oil outlets B1 and B2 are used for connecting the power head component (11), the oil inlets A3, A4 and the oil outlets B3 and B4 are used for connecting the main hoisting component (12), the oil inlets A5, A6 and the oil outlets B5 and B6 are used for connecting the pressurizing pilot component (13), the shuttle valve I (141) is arranged between the oil inlets A1 and A2, the shuttle valve II (142) is arranged between the A3 and A5, the shuttle valve III (143A) is arranged between the oil inlets A4623 and the pressure switch (57323), the shuttle valve four (144) is used for being connected and arranged between any two shuttle valves of the three shuttle valves from the shuttle valve one (141) to the shuttle valve three (143), the shuttle valve five (145) is used for being connected and arranged between the other shuttle valve of the three shuttle valves from the shuttle valve one (141) to the shuttle valve three (143) and the shuttle valve four (144), the shuttle valve five (145) is connected with the pressure switch (15) through the oil outlet B7, and the pressure switch (15) is connected with the electric controller (5).

The invention has the following beneficial effects: according to the invention, the control logics of a power system, a hydraulic system and an electrical system of the rotary drilling rig are organically unified, and the signal extraction mode and classification of the automatic idling system of the engine are innovated, so that the automatic idling work of the rotary drilling rig can be completed only by five shuttle valves in the system. The automatic idling system of the general rotary drilling rig has a large number of shuttle valves, the cost of the automatic idling system is high, and the failure rate of the system is high. Correspondingly, the automatic idling system provided by the invention is low in cost and low in system failure rate.

Drawings

FIG. 1 is a schematic structural diagram of an intelligent idling system of the rotary drilling rig.

Detailed Description

As shown in fig. 1, the invention provides an intelligent idle speed system of a rotary drilling rig, which comprises a shuttle valve group idle speed identification module (1), an unlocking idle speed identification module (2), a switching idle speed identification module (3), an action button idle speed identification module (4) and an electric controller (5), wherein the shuttle valve group idle speed identification module (1), the unlocking idle speed identification module (2), the switching idle speed identification module (3) and the action button idle speed identification module (4) input idle speed identification signals to the electric controller (5), the electric controller (5) is used for outputting signals to an engine (6), the shuttle valve group idle speed identification module (1) comprises a power head pilot component (11), a main hoisting pilot component (12) and a pressurizing pilot component (13), and the unlocking idle speed identification module (2) comprises a walking unlocking button (21), a pressurizing pilot component (13), The platform rotation unlocking button (22) and the mast verticality adjusting unlocking button (23), the switching type idle speed identification module (3) comprises a luffing switching button (31) and an auxiliary hoisting switching button (32), and the action button type idle speed identification module (4) comprises a track oil cylinder extension button (41) and a track oil cylinder contraction button (42).

In the present invention, the power head includes a mechanism for driving the drill rod in a forward or reverse direction to provide torque to the drill rod, as will be appreciated by those skilled in the art. The main winch is used for placing the drill rod into the drill hole or lifting the drill rod from the drill hole, and the auxiliary winch is used for auxiliary construction of the rotary drilling rig, such as hoisting of a reinforcement cage. The pressurization is to apply pressure to the drill rod so that the drill rod can drill downwards; the amplitude can align the drill pipe with the borehole. The "pilot" means that the operations are all performed in a hydraulic remote control in a cab, and are not directly performed on corresponding action equipment. The platform rotation means that the cab platform rotates on a chassis of the rotary drilling rig. The mast verticality adjustment means that the mast needs to be adjusted to be in a vertical state when the drill rod drills; and when the rotary drilling rig is transported or transferred, the mast is in a down-lying state. The extension and contraction of the crawler oil cylinder are two different states of the crawler oil cylinder, the extension of the crawler oil cylinder enables the distance between two parallel crawlers of the rotary drilling rig to be wider, and the rotary drilling rig generally is in the state when working; when the crawler oil cylinder is contracted, the distance between the two parallel crawlers is narrow, and the rotary drilling rig is generally in the state when in a transportation state.

Some actions of the rotary drilling rig are in consideration of safety, a locking function can be achieved electrically, and the actions can be achieved only by electrical unlocking in related actions, including walking, platform rotation and mast verticality adjustment. According to the invention, unlocking operation buttons are arranged on walking, platform rotation and mast verticality adjustment as unlocking input signals of the electric system controller, and the controller has output action only when the unlocking signal is obtained. The unlocking signals of walking, platform turning and mast verticality adjusting can be used as identification signals of the actions.

The rotary drilling rig is provided with a variable amplitude switching button and an auxiliary hoisting switching button, the switching button is pressed, an electric controller obtains an input signal of the switching action, and the controller outputs the switching action to the other action. For example, pressurization and amplitude variation are carried out, and the pressurization action is switched to the amplitude variation action by pressing a switching button for switching; and for example, the main winch and the auxiliary winch work by switching the main winch to the auxiliary winch when a switching button is pressed. The switching signal of the amplitude and the auxiliary winch can be used as the identification signal of the actions.

Some actions of the rotary drilling rig are realized by controlling a reversing valve through a pilot electromagnetic valve, an action button is electrically arranged and operated, and the pilot electromagnetic valve is controlled to realize the actions through an output signal of an electric system controller. For example, when the crawler oil cylinder extends, the crawler oil cylinder extends and retracts, two buttons are arranged, the buttons are pressed, and the electric system controller receives an action signal, namely outputs a control signal, so that the crawler oil cylinder extends and retracts. These two motion button signals can be used as identification signals for track extension motion.

The invention provides an intelligent idling system of a rotary drilling rig, which is provided with a shuttle valve group type idling identification signal, an unlocking type idling identification signal, a switching type idling identification signal and an action button type idling identification signal, wherein the signals are used as each action identification signal of an electric controller, and the rotating speed control of an engine is realized through the controller. The shuttle valve group idle speed identification signal comprises several actions of a power head, a main winch and pressurization, and the several actions can be used for extracting the signal only by five shuttle valves; the unlocking idle speed identification signal comprises several actions of walking, platform rotation and mast verticality adjustment; the switching type idle speed identification signal comprises amplitude variation and auxiliary hoisting action; the action button type idle speed identification signal comprises the extending and retracting actions of the crawler oil cylinder.

The invention specifically comprises three unlocking operation buttons, two switching buttons and two action buttons, wherein the buttons are generally arranged on a handle or a display screen and are arranged at human-computer interaction positions in a cab. For example, when the amplitude change button 31 is pressed, the drill rod is switched from the pressurized state to the amplitude change state. Pressing the auxiliary hoist switch button 32 switches the main hoist state to the auxiliary hoist state. These buttons are not generally provided on the electric controller 5, and the electric controller 5 is a programmable controller. The shuttle valve group idle speed identification module (1) of the invention automatically extracts signals without any button.

In the invention, the signal extraction process in the idle speed identification module of the shuttle valve group class comprises the following principle steps.

1. Extracting idle speed identification signals of the power head: the power head pilot is connected with the forward pilot of the power head and the reverse pilot of the power head by feeding oil into the shuttle valve groups A1 and A2 and discharging oil from the shuttle valve groups B1 and B2. For example, a1 and B1 receive the power head forward pilot, and a2 and B2 receive the power head reverse pilot. When oil is fed into the A1, the pilot of the power head discharges oil from the B1 and pushes the first shuttle valve and the fifth shuttle valve in the shuttle valve group to the right, pressure oil reaches the pressure switch after passing through the first shuttle valve and the fifth shuttle valve, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller; when oil is fed into the A2, the pilot of the power head discharges oil from the B2 and pushes the first shuttle valve in the shuttle valve group to the left position, the fifth shuttle valve pushes the right position, pressure oil passes through the first shuttle valve and the fifth shuttle valve and then reaches the pressure switch, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller.

2. Extracting a main winch idle speed identification signal: the main winch pilot enters oil through shuttle valve groups A3 and A4, and oil is discharged from B3 and B4, one is connected with the main winch lifting pilot, and the other is connected with the main winch descending pilot. When oil is fed into the A3, the main hoisting pilot discharges oil from the B3 and pushes the second shuttle valve and the fourth shuttle valve in the shuttle valve group to the right, the fifth shuttle valve is pushed to the left, pressure oil reaches a pressure switch after passing through the second shuttle valve, the fourth shuttle valve and the fifth shuttle valve, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller; when oil is fed into the A4, the main hoisting pilot discharges oil from the B4 and pushes the second shuttle valve in the shuttle valve group to the left, the fourth shuttle valve pushes the right, the fifth shuttle valve pushes the left, pressure oil reaches the pressure switch after passing through the second shuttle valve, the fourth shuttle valve and the fifth shuttle valve, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller.

3. And (3) extracting a pressurization idle speed identification signal: the pressurized pilot is fed with oil through the shuttle valve groups A5 and A6, and oil is discharged from the shuttle valve groups B5 and B6, one of the pressurized pilot is connected with the pressurized pull-up pilot, and the other pressurized pilot is connected with the pressurized pull-down pilot. When oil is fed into the A5, the pressurized pilot outputs oil from the B5 and pushes the shuttle valve III in the shuttle valve group to the right, the shuttle valve IV pushes the left and the shuttle valve V pushes the left, pressure oil reaches the pressure switch after passing through the shuttle valve III, the shuttle valve IV and the shuttle valve V, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller; when oil is fed into the A6, the pressurized pilot discharges oil from the B6 and pushes the third shuttle valve, the fourth shuttle valve and the fifth shuttle valve in the shuttle valve group to the left position, pressure oil reaches the pressure switch after passing through the third shuttle valve, the fourth shuttle valve and the fifth shuttle valve, and the pressure switch receives the pressure and converts the pressure into a pressure signal to be input into the controller.

The above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Any other changes or modifications of the equivalent technical features without changing the basic idea and essence of the present invention shall fall within the protection scope of the claims of the present invention.