CN113685383A - Control method and system for impact function of drill jumbo and drill jumbo - Google Patents

Control method and system for impact function of drill jumbo and drill jumbo Download PDF

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Publication number
CN113685383A
CN113685383A CN202111134965.6A CN202111134965A CN113685383A CN 113685383 A CN113685383 A CN 113685383A CN 202111134965 A CN202111134965 A CN 202111134965A CN 113685383 A CN113685383 A CN 113685383A
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China
Prior art keywords
pressure
buffer
impact
loop
controller
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CN202111134965.6A
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Chinese (zh)
Inventor
顾松林
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Anbaituo Nanjing Construction Mining Equipment Co ltd
Epiroc Nanjing Construction and Mining Equipment Ltd
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Anbaituo Nanjing Construction Mining Equipment Co ltd
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Priority to CN202111134965.6A priority Critical patent/CN113685383A/en
Publication of CN113685383A publication Critical patent/CN113685383A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/02—Machines slitting solely by one or more percussive tools moved through the seam
    • E21C25/04—Cutting crowns or other tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a control method and a control system for an impact function of a drill jumbo and the drill jumbo, and belongs to the technical field of engineering machinery. The control method comprises the following steps: the controller acquires the pressure of the buffer loop in real time and compares the pressure of the buffer loop with a set buffer pressure threshold value; and the controller sends a control signal to a control valve in the impact loop according to the comparison result to adjust the pressure state of the impact loop. The control system comprises an impact loop, a buffer loop and a controller, wherein a control valve is arranged on a pipeline between an impact force generating part of the impact loop and the rock drill impact mechanism and connected with the controller; and a buffer pressure sensor is arranged on a pipeline between the buffer pressure generating part of the buffer loop and the buffer part of the rock drill, and the buffer pressure sensor is connected with the controller. The invention can improve the idle driving prevention control precision and the response speed of the rock drill, prolong the service life of the rock drill and reduce the professional capability requirement on the drill jumbo manipulator.

Description

Control method and system for impact function of drill jumbo and drill jumbo
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a control method and a control system for an impact function of a drill jumbo and the drill jumbo.
Background
In the rock drilling excavation construction, due to complicated and changeable geological conditions of metal ores, particularly rock stratum structure hardness difference and rock stratum uneven distribution, the rock drilling trolley needs to analyze the rock stratum structure before construction, and then the working condition of the rock drilling trolley is set and processed. In the operation process, the hydraulic drill jumbo generally has high and low impact power, and due to uneven rock stratum distribution or misoperation of an operator, the phenomenon of idle driving of the rock drill often occurs during the operation of the drill jumbo, and the phenomenon is difficult to avoid. Under the current technical condition, the rock drilling jumbo is mainly manually controlled by a buffer loop arranged inside the rock drilling jumbo or by an experienced operator according to the change of a pressure gauge.
The two control modes are mainly characterized by low control precision and low response speed, and the phenomenon that the rock drilling jumbo is idle-beat and the efficiency of rock drilling operation are influenced cannot be effectively avoided. If this kind of operating mode appears often simultaneously, can cause the injury to the screw thread between rock drill body and the drilling tool to increase the maintenance cost and the number of times of rock drilling platform truck, shortened the life of rock drill, and can influence the rock drilling efficiency of construction greatly, make rock drilling cost greatly increased.
Disclosure of Invention
The technical problem is as follows: the invention provides a control method of a rock drilling jumbo impact function, which can proportionally adjust impact pressure according to buffer loop pressure, a system capable of realizing the method and the rock drilling jumbo. The idle-strike prevention control precision and the response speed of the rock drill are improved, so that the service life of the rock drill is prolonged, and the requirement on the professional ability of an operator of the rock drilling jumbo is lowered.
The technical scheme is as follows: in one aspect, an embodiment of the invention provides a method of controlling a percussion function of a drill jumbo having a percussion circuit and a buffer circuit, the controlling comprising:
the controller acquires the pressure of the buffer loop in real time and compares the pressure of the buffer loop with a set buffer pressure threshold value;
and the controller sends a control signal to a control valve in the impact loop according to the comparison result to adjust the pressure state of the impact loop.
Preferably, the buffer pressure threshold comprises a minimum buffer pressure Pd-minLow buffer pressure Pd-lowHigh buffer pressure Pd-highAnd a maximum buffer pressure Pd-maxThe relationship of the four is: pd-min<Pd-low<Pd-high<Pd-max。
Preferably, the controller sends a control signal to a control valve in the shock circuit according to the comparison result, and the method for adjusting the pressure state of the shock circuit comprises the following steps:
when the buffer circuit pressure is greater than the minimum buffer pressure Pd-minAnd less than the low creep pressure Pd-lowWhile the impact circuit pressure is adjusted to a low impact pressure Pp-collaringAnd is kept in a low-impact state;
when the cushion loop pressure is greater than or equal to the low cushion pressure Pd-lowAnd is less than the high buffer pressure Pd-highWhen the pressure of the impact loop is adjusted linearly and proportionally with the pressure of the buffer loop;
when the buffer circuit pressure is greater than or equal to the high buffer pressure Pd-highAnd is less than the maximum buffer pressure Pd-maxWhile the impact circuit pressure is adjusted to a high ram pressure Pp-drillingAnd is kept in a high-impact state;
when the buffer circuit pressure is less than or equal to the minimum buffer pressure Pd-minOr the buffer circuit pressure is greater than or equal to the maximum buffer pressure Pd-maxThe control valve is closed without adjusting the pressure of the impulse circuit.
Further, the method includes setting a buffer pressure threshold via the display and sending the set buffer pressure threshold to the controller.
Further, the method also comprises calibrating the high punching pressure P through the displayp-drillingAnd low press force Pp-collaringAnd sends the calibration value to the controller.
Further, the method further comprises: the controller acquires the pressure of the impact loop in real time and sends the pressure of the impact loop to the display for real-time display.
On the other hand, the embodiment of the invention also provides a control system for the impact function of the drill jumbo, which comprises an impact loop, a buffer loop, a controller and an oil tank, wherein the impact loop is arranged on the buffer loop;
the impact loop comprises an impact force generating component and a rock drill impact component, and the impact force generating component supplies oil to the rock drill impact mechanism through a pipeline; a control valve is arranged on a pipeline between the impact force generating component and the rock drill impact mechanism and is connected with a controller;
the buffer loop comprises a buffer pressure generating part and a rock drill buffer part, and the buffer pressure generating part supplies oil to the rock drill buffer part through a pipeline; a buffer pressure sensor is arranged on a pipeline between the buffer pressure generating component and the rock drill buffer component, and the buffer pressure sensor is connected with a controller;
the controller acquires the pressure of the buffer loop in real time and compares the pressure of the buffer loop with a set buffer pressure threshold value;
and the controller sends a control signal to a control valve in the impact loop according to the comparison result to adjust the pressure state of the impact loop.
Further, the system also comprises a display, and the display is connected with the controller through a CAN bus.
Furthermore, an impact pressure sensor is arranged on a pipeline between the control valve and the rock drill impact component, and the impact pressure sensor is connected with the controller.
Furthermore, an oil outlet of the impact force generation component is provided with a first overflow valve, and an outlet of the first overflow valve is connected with the oil tank.
Further, an oil outlet of the buffering force generating component is provided with a combined valve, and the combined valve comprises a second overflow valve and a third overflow valve which are connected in parallel; oil outlets of the second overflow valve and the third overflow valve are connected with an oil tank; and a throttle valve is arranged between oil inlets of the second overflow valve and the third overflow valve.
Further, the control valve is an electro-hydraulic proportional pressure control valve.
In another aspect, an embodiment of the present invention further provides a rock drilling jumbo comprising the rock drilling jumbo damping control system.
Compared with the prior art, the method and the device have the advantages that the impact pressure is proportionally adjusted by the controller according to the pressure of the buffer circuit of the drill jumbo in real time, and the idle-stroke prevention control precision and the response speed of the rock drill are improved, so that the service life of the rock drill is prolonged, and the professional capacity requirement on an operator of the drill jumbo is reduced.
Drawings
Fig. 1 is a flow chart of a method of controlling the impact function of a drill jumbo in an embodiment of the invention;
fig. 2 is a control strategy diagram of a control method of a jumbo impact function in an embodiment of the present invention;
figure 3 is a block diagram of the control system for the impact function of the drill jumbo in an embodiment of the invention.
The figure shows that: 1. an impulse circuit; 2. a buffer circuit; 3. a controller; 4. an impact force generating member; 5. a rock drill impact component; 6. a control valve; 7. a damping force generating member; 8. a rock drill cushioning component; 9. a buffer pressure sensor; 10. a display; 11. an impact pressure sensor; 12. a first overflow valve; 13. a combination valve; 14. a second overflow valve; 15. a third overflow valve; 16. a throttle valve; 17. and an oil tank.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings. It is noted that the terms "first," "second," and the like are used for convenience of description and are not to be construed as limiting in number or the like.
The control method of the impact function of the drill jumbo provided by the embodiment of the invention is mainly applied to the drill jumbo, and the drill jumbo is provided with an impact loop, a buffer loop and a rock drill for drilling. The method mainly comprises the step that the controller can control the pressure of the impact loop in real time according to the pressure of the buffer loop.
With reference to fig. 1 and 2, in the present embodiment, a method of controlling a drill jumbo impact function includes:
the controller obtains the pressure of the buffer circuit in real time and compares the pressure of the buffer circuit with a set buffer pressure threshold value. In an embodiment of the invention, four buffer pressure thresholds are set, including a minimum buffer pressure Pd-minLow buffer pressure Pd-lowHigh buffer pressure Pd-highAnd a maximum buffer pressure Pd-maxThe relationship of the four is: pd-min<Pd-low<Pd-high<Pd-max. Wherein the minimum buffer pressure Pd-minAnd a maximum buffer pressure Pd-maxAre two limit thresholds of the damping pressure, while the low damping pressure Pd-lowAnd a high buffer pressure Pd-highIs a threshold value set between two limit threshold values. Setting a low creep pressure Pd-lowAnd a high buffer pressure Pd-highThe purpose of (1) is to prevent the impact pressure from changing in a step change from a low-impact state to a high-impact state, thereby reducing the impact influence on the circuit.
In the embodiment of the invention, four buffer pressure thresholds can be set through the display, and after the four buffer pressure thresholds are set on the display, the set numerical values are transmitted to the controller so as to be called by a program in the controller. Of course, in some cases, if the values of the four buffer pressure thresholds are the same in all operating conditions of the rock-drilling rig, they may also be set directly in the program of the controller, without further setting via the display. And set up through the display, operating personnel can be according to the operational environment, nimble setting to make the drill jumbo can all carry out better impact function control characteristic under the operational environment of difference.
In the embodiment of the invention, the controller acquires the pressure of the buffer circuit as P in real timedIn the embodiment of the present invention, several comparison results can be set as follows: (1) buffer circuit pressure PdLess than or equal to the minimum buffer pressure Pd-minI.e. Pd≤Pd-min(ii) a (2) Buffer circuit pressure PdGreater than the minimum buffer pressure Pd-minAnd less than the low creep pressure Pd-lowI.e. Pd>Pd-minAnd P isd<Pd-low(ii) a (3) Buffer circuit pressure PdGreater than or equal to the low creep pressure Pd-lowAnd is less than the high buffer pressure Pd-highI.e. Pd≥Pd-lowAnd P isd<Pd-high(ii) a (4) Buffer circuit pressure PdGreater than or equal to the high buffer pressure Pd-highAnd is less than the maximum buffer pressure Pd-maxI.e. Pd≥Pd-highAnd P isd<Pd-max(ii) a (5) Buffer circuit pressure PdGreater than or equal to the maximum buffer pressure Pd-maxI.e. Pd≥Pd-max。
And the controller sends a control signal to a control valve in the impact loop according to the comparison result to adjust the pressure state of the impact loop. In the present embodiment, the state of the percussion circuit pressure is adjusted according to the four comparison results given. Specifically, the adjustment is performed in the following manner:
when P is presentd≤Pd-minWhen the pressure in the buffer circuit is insufficient, the normal buffer function can not be provided, and at the moment, the controller does not adjust the pressure P of the impact circuitpBut directly closes the control valve.
When P is presentd>Pd-minAnd P isd<Pd-lowWhen the rock drill is in a state of just contacting rocks or encountering soft rocks, the controller outputs a PWM signal to control the control valve to impact the pressure P of the looppAdjusted to low press pressure Pp-collaringAnd remains in a low-impact state.
When P is presentd≥Pd-lowAnd P isd<Pd-highThe controller outputs PWM signal to control the control valve to make the impact loop pressure follow the buffer loop pressure PpAnd the linear proportion adjustment is carried out, so that the impact influence of the impact pressure step change on the hydraulic circuit can be effectively avoided.
When P is presentd≥Pd-highAnd P isd<Pd-maxIn the meantime, the rock drill is considered to be in a normal impact state and controlledThe controller outputs PWM signal to control the control valve to impact the loop pressure PpAdjusted to high ram pressure Pp-drillingAnd remains in the high-impact state.
When P is presentd≥Pd-maxWhile, the impulse circuit pressure P is not adjustedpAnd closing the control valve to stop the impact.
In an embodiment of the present invention, the buffer circuit pressure P may be determined according to the flow chart shown in FIG. 1dWhether or not P is satisfiedd>Pd-minAnd P isd<Pd-lowWhen the pressure is not in the interval, the pressure P of the buffer circuit is continuously judgeddWhether or not P is satisfiedd≥Pd-lowAnd P isd<Pd-high(ii) a When the pressure is not in the interval, the pressure P of the buffer circuit is continuously judgeddWhether or not P is satisfiedd≥Pd-highAnd P isd<Pd-max(ii) a When the pressure is not in the interval, the pressure P of the buffer circuit is continuously judgeddWhether or not P is satisfiedd≤Pd-minOr Pd≥Pd-maxAnd executing corresponding control actions in different intervals.
By utilizing the method provided by the embodiment of the invention, the controller carries out proportional adjustment on the impact pressure in real time according to the pressure of the buffer circuit of the drill jumbo, and improves the idle-driving prevention control precision and the response speed of the rock drill, thereby prolonging the service life of the rock drill and reducing the professional capability requirement on an operator of the drill jumbo.
In an embodiment of the invention, the high impact force P in the impulse circuitp-drillingAnd low press force Pp-collaringCan be calibrated through the display and send the calibrated value to the controller.
Meanwhile, in the embodiment of the invention, the controller can also acquire the pressure of the impact loop in real time and send the pressure of the impact loop to the display for real-time display, so that an operator can observe the pressure state of the impact loop at any time.
On the other hand, in an embodiment of the present invention, in order to apply the above-described method to the impact function control of the rock-drilling jumbo, there is provided a control system of the impact function of the rock-drilling jumbo, as shown in fig. 3, the system including: the shock circuit 1, the buffer circuit 2, the controller 3 and the oil tank 17; wherein the percussion circuit 1 and the damping circuit 2 are both hydraulic circuits. In this embodiment, the impact circuit 1 comprises an impact force generating part 4 and a rock drill impact part 5, wherein the impact force generating part 4 supplies oil to the rock drill impact part 5 through a pipeline; the impact force generating component 4 specifically comprises a hydraulic pump and a driving motor for driving the hydraulic pump to operate, and can provide source power for the rock drill impact component 5. The rock drill impact unit 5, which corresponds to an impact circuit, comprises in particular an impact piston which, under the influence of hydraulic oil, provides the rock drill with an impact force.
A control valve 6 is arranged on a pipeline between the impact force generating part 4 and the rock drill impact part 5, and the control valve 6 is connected with the controller 3, so that the controller 3 can acquire a pressure signal of the impact loop 1 in real time.
The buffer loop 2 comprises a buffer force generating part 7 and a rock drill buffer part 8, and the buffer force generating part 7 supplies oil to the rock drill buffer part through a pipeline; in an embodiment of the invention the damping force generating unit 7 comprises a hydraulic pump and a drive motor for driving the hydraulic pump to operate, which may provide the source power for the rock drill damping unit.
The buffer unit 8 of the rock drilling machine comprises a buffer piston and a chuck bushing, and can generate buffer force under the action of hydraulic oil, and the buffer force acts on the impact piston to provide buffer effect.
And a buffer pressure sensor 9 is arranged on a pipeline between the buffer force generating component 7 and the rock drill buffer component, and the buffer pressure sensor 9 is connected with the buffer force generating component, so that the controller 3 can acquire a pressure signal of the buffer circuit 2 in real time.
In the embodiment of the present invention, the controller 3 obtains the pressure of the buffer circuit in real time, and compares the pressure of the buffer circuit with the set buffer pressure threshold; the controller 3 sends a control signal to the control valve 6 in the impulse circuit based on the comparison result, adjusting the state of the impulse circuit pressure.
For a specific control process, reference may be made to the corresponding description above regarding the method for controlling the percussion function of the rock-drilling rig, which is not described herein again.
Further, in the embodiment of the present invention, the system further includes a display 10, and the display 10 is connected to the controller 3 through the CAN bus. By means of the display, the pressure of the buffer circuit can be displayed on the display in real time, and a buffer pressure threshold value can be set on the display, for example, four buffer pressure threshold values can be set, including the minimum buffer pressure Pd-minLow buffer pressure Pd-lowHigh buffer pressure Pd-highAnd a maximum buffer pressure Pd-maxThe relationship of the four is: pd-min<Pd-low<Pd-high<Pd-max. In addition, two impact pressure values, including a low impact pressure P, can be calibrated on the displayp-collaringAnd high punching pressure Pp-drilling。
By using the system provided by the embodiment of the invention, the impact pressure can be proportionally adjusted in real time according to the pressure of the buffer loop by using the control method provided by the embodiment of the invention, so that the idle-driving prevention control precision and the response speed of the rock drill are improved, the service life of the rock drill is prolonged, and the requirement on the professional ability of a drill jumbo manipulator is reduced.
Further, in an embodiment of the invention, a percussion pressure sensor 11 is arranged in the line between the control valve 6 and the rock drill percussion part 5, the percussion pressure sensor 11 being connected to the controller 3. The impact pressure sensor 11 collects pressure signals of the impact loop in real time and then sends the pressure signals to the controller 3, and the controller 3 can send the pressure signals to the display 10 for displaying, so that an operator can observe the pressure state of the impact loop in real time.
Further, in the embodiment of the present invention, the oil outlet of the impact force generation component 4 is provided with the first overflow valve 12, and the outlet of the first overflow valve 12 is connected with the oil tank 17, so that the impact circuit can be protected.
An oil outlet of the buffering force generating component 7 is provided with a combined valve 13, and the combined valve 13 comprises a second overflow valve 14 and a third overflow valve 15 which are connected in parallel; oil outlets of the second overflow valve 14 and the third overflow valve 15 are connected with an oil tank 17; a throttle valve 16 is arranged between oil inlets of the second overflow valve 14 and the third overflow valve 15. The combination valve 13 can stabilize the pressure and the flow, and also functions as a safety valve to protect the buffer circuit.
In one embodiment of the invention, the control valve 6 is an electro-hydraulic proportional pressure control valve, by means of which proportional regulation of the percussion pressure is facilitated.
On the other hand, in an embodiment of the invention, there is also provided a rock drilling rig comprising a control system for the proposed percussion function of the rock drilling rig, controllable by means of the provided method, which has the same advantages as the proposed control system control method.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.

Claims (13)

1. A method of controlling the percussion function of a rock drilling rig having a percussion circuit and a buffer circuit, characterized in that the method comprises:
the controller acquires the pressure of the buffer loop in real time and compares the pressure of the buffer loop with a set buffer pressure threshold value;
and the controller sends a control signal to a control valve in the impact loop according to the comparison result to adjust the pressure state of the impact loop.
2. The method of claim 1, wherein the buffer pressure threshold comprises a minimum buffer pressure Pd-minLow buffer pressure Pd-lowHigh buffer pressure Pd-highAnd a maximum buffer pressure Pd-maxThe relationship of the four is: pd-min<Pd-low<Pd-high<Pd-max。
3. The method of claim 2, wherein the controller sends a control signal to a control valve in the shock circuit based on the comparison, and wherein adjusting the pressure state of the shock circuit comprises:
when the buffer circuit pressure is greater than the minimum buffer pressure Pd-minAnd less than the low creep pressure Pd-lowWhile the impact circuit pressure is adjusted to a low impact pressure Pp-collaringAnd is kept in a low-impact state;
when the cushion loop pressure is greater than or equal to the low cushion pressure Pd-lowAnd is less than the high buffer pressure Pd-highWhen the pressure of the impact loop is adjusted linearly and proportionally with the pressure of the buffer loop;
when the buffer circuit pressure is greater than or equal to the high buffer pressure Pd-highAnd is less than the maximum buffer pressure Pd-maxWhile the impact circuit pressure is adjusted to a high ram pressure Pp-drillingAnd is kept in a high-impact state;
when the buffer circuit pressure is less than or equal to the minimum buffer pressure Pd-minOr the buffer circuit pressure is greater than or equal to the maximum buffer pressure Pd-maxThe control valve is closed without adjusting the pressure of the impulse circuit.
4. The method of claim 3, further comprising setting a buffer pressure threshold via a display and sending the set buffer pressure threshold to a controller.
5. The method of claim 4, further comprising calibrating the high impact pressure P via a displayp-drillingAnd low press force Pp-collaringAnd sends the calibration value to the controller.
6. The method according to any one of claims 1-5, further comprising: the controller acquires the pressure of the impact loop in real time and sends the pressure of the impact loop to the display for real-time display.
7. A control system for the impact function of a drill jumbo is characterized by comprising an impact loop (1), a buffer loop (2), a controller (3) and an oil tank (17);
the impact loop (1) comprises an impact force generating part (4) and a rock drill impact part (5), and the impact force generating part (4) supplies oil to the rock drill impact mechanism (5) through a pipeline; a control valve (6) is arranged on a pipeline between the impact force generating component (4) and the rock drill impact mechanism (5), and the control valve (6) is connected with the controller (3);
the buffer circuit (2) comprises a buffer pressure generating part (7) and a rock drill buffer part (8), and the buffer pressure generating part (7) supplies oil to the rock drill buffer part (8) through a pipeline; a buffer pressure sensor (9) is arranged on a pipeline between the buffer pressure generating component (7) and the rock drill buffer component (8), and the buffer pressure sensor (9) is connected with the controller (3);
the controller (3) acquires the pressure of the buffer loop in real time and compares the pressure of the buffer loop with a set buffer pressure threshold value;
the controller (3) sends a control signal to a control valve (6) in the impulse circuit according to the comparison result, and adjusts the state of the pressure of the impulse circuit.
8. A control system for the percussion function of a rock drilling rig according to claim 7, characterized in that the system further comprises a display (10), the display (10) being connected to the controller (3) via a CAN bus.
9. A control system for the percussion function of a rock drilling rig according to claim 7, characterised in that a percussion pressure sensor (11) is arranged in the line between the control valve (6) and the percussion part (5) of the rock drilling machine, which percussion pressure sensor (11) is connected to the controller (3).
10. A control system for the percussion function of a rock drilling rig according to claim 7, characterised in that the oil outlet of the impact force generating unit (4) is provided with a first overflow valve (12), the outlet of the first overflow valve (12) being connected to an oil tank (17).
11. A control system for the percussion function of a rock drilling rig according to claim 7, characterised in that the oil outlet of the damping force generating member (7) is provided with a combination valve (13), which combination valve (13) comprises a second overflow valve (14) and a third overflow valve (15) connected in parallel; oil outlets of the second overflow valve (14) and the third overflow valve (15) are connected with an oil tank (17); a throttle valve (16) is arranged between oil inlets of the second overflow valve (14) and the third overflow valve (15).
12. A control system for the percussion function of a rock drilling rig according to any one of claims 7-11, characterized in that the control valve (6) is an electro-hydraulic proportional pressure control valve.
13. A rock drilling rig comprising a control system for the percussion function of the rock drilling rig according to any of claims 7-12.
CN202111134965.6A 2021-09-27 2021-09-27 Control method and system for impact function of drill jumbo and drill jumbo Pending CN113685383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111134965.6A CN113685383A (en) 2021-09-27 2021-09-27 Control method and system for impact function of drill jumbo and drill jumbo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111134965.6A CN113685383A (en) 2021-09-27 2021-09-27 Control method and system for impact function of drill jumbo and drill jumbo

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Publication Number Publication Date
CN113685383A true CN113685383A (en) 2021-11-23

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Application Number Title Priority Date Filing Date
CN202111134965.6A Pending CN113685383A (en) 2021-09-27 2021-09-27 Control method and system for impact function of drill jumbo and drill jumbo

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