CN110566525A - Hydraulic system of drilling machine and drilling machine - Google Patents

Hydraulic system of drilling machine and drilling machine Download PDF

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Publication number
CN110566525A
CN110566525A CN201910938512.5A CN201910938512A CN110566525A CN 110566525 A CN110566525 A CN 110566525A CN 201910938512 A CN201910938512 A CN 201910938512A CN 110566525 A CN110566525 A CN 110566525A
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CN
China
Prior art keywords
oil
valve
drilling
port
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910938512.5A
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Chinese (zh)
Inventor
石本华
刘海东
胡代洪
欧云科
杨廷彬
闫宪良
王江涛
简福蓉
江治明
曹雪
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CHONGQING PINGSHAN MINING ELECTROMECHANICAL EQUIPMENT Co Ltd
Original Assignee
CHONGQING PINGSHAN MINING ELECTROMECHANICAL EQUIPMENT Co Ltd
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Publication date
Application filed by CHONGQING PINGSHAN MINING ELECTROMECHANICAL EQUIPMENT Co Ltd filed Critical CHONGQING PINGSHAN MINING ELECTROMECHANICAL EQUIPMENT Co Ltd
Priority to CN201910938512.5A priority Critical patent/CN110566525A/en
Publication of CN110566525A publication Critical patent/CN110566525A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Earth Drilling (AREA)

Abstract

the invention provides a hydraulic system of a drilling machine and the drilling machine, which comprise an electric motor, a first hydraulic pump, a second hydraulic pump, a drilling system, a traveling system, a posture adjusting system, a pump motor control valve group and a change-over valve; an oil outlet of the first hydraulic pump is connected with an oil inlet of the posture adjusting system and an oil inlet of the drilling system; the oil outlet of the second hydraulic pump is connected with the oil inlet of the traveling system and the drilling system; a feedback oil port of the second hydraulic pump is sequentially connected with a feedback oil port of the traveling system and a feedback oil port of the drilling system of an external feedback oil port of the traveling system; the pump motor control valve group is respectively connected with the change-over valve, the drilling system, the traveling system and the posture adjusting system; the pump motor control valve group is used for adjusting oil inlet pressure of the drilling system, the walking system and the attitude adjusting system; the conversion valve is used for controlling the working states of the drilling system, the walking system and the posture adjusting system; the walking system and the posture adjusting system do not work when the drilling system works, and accidents caused by misoperation are prevented.

Description

hydraulic system of drilling machine and drilling machine
Technical Field
the invention relates to the technical field of drilling machines, in particular to a hydraulic system of a drilling machine and the drilling machine.
background
the hydraulic drilling machine is production equipment commonly adopted in coal mine gas extraction operation. The hydraulic system of the drilling machine converts mechanical energy into pressure energy of liquid by using a hydraulic pump, converts the pressure energy of the liquid into the mechanical energy through various control valves, pipelines and hydraulic elements, drives a working mechanism and realizes linear reciprocating motion or rotary motion; the design of the hydraulic system of the drilling machine is decisive for the overall performance of the hydraulic drilling machine.
in the existing design, a drilling machine comprises a walking system, a drilling system and a posture adjusting system, when the drilling system works, if an operator performs misoperation, the walking system and/or the posture adjusting system and the drilling system act simultaneously, which is a dangerous condition and is easy to cause safety accidents.
Disclosure of Invention
The invention aims to provide a hydraulic system of a drilling machine and the drilling machine, and aims to solve the problems that in the prior art, when a drilling system of the drilling machine works, if an operator performs misoperation, a walking system and/or a posture adjusting system and the drilling system act simultaneously, which is a dangerous situation, and safety accidents are easy to happen.
in order to solve the above technical problem, the present invention provides a hydraulic system of a drilling machine, comprising:
the drilling system comprises an electric motor (1), a first hydraulic pump (2), a second hydraulic pump (3), a drilling system, a traveling system, a posture adjusting system, a pump motor control valve group (8) and a change-over valve (9);
An oil outlet of the first hydraulic pump (2) is connected with an oil inlet (P') of the posture adjusting system and an oil inlet (P2) of the drilling system;
an oil outlet (B) of the second hydraulic pump (3) is connected with an oil inlet (P1) of the traveling system and the drilling system; a feedback oil port (X) of the second hydraulic pump (3) is sequentially connected with a feedback oil port (LS2) of the traveling system, an external feedback oil port (LS1) of the traveling system and a feedback oil port (LS) of the drilling system;
The pump motor control valve group (8) is respectively connected with the change-over valve (9), the drilling system, the traveling system and the attitude adjusting system;
The pump motor control valve group (8) is used for adjusting oil inlet pressure of the drilling system, the traveling system and the attitude adjusting system;
and the switching valve (9) is used for controlling the working states of the drilling system, the walking system and the posture adjusting system.
Optionally, the drilling system comprises a drilling multi-way valve group (12), and a drilling pilot valve (6) and a drilling actuating mechanism which are respectively connected with the drilling multi-way valve group (12); the drilling pilot valve (6) controls the drilling multi-way valve bank (12) to work, and further controls the drilling actuating mechanism to work;
the walking system comprises a walking multi-way valve group (10), and a walking pilot valve (7) and a walking actuating mechanism which are respectively connected with the walking multi-way valve group (10); the walking pilot valve (7) controls the walking multi-way valve group (10) to work, and further controls the walking actuating mechanism to work;
the posture adjusting system comprises a posture adjusting multi-way valve group (11), and a posture adjusting pilot valve (5) and a posture adjusting actuating mechanism which are respectively connected with the posture adjusting multi-way valve group (11); the posture adjusting pilot valve (5) controls the posture adjusting multi-way valve set (11) to work, and further controls the posture adjusting actuating mechanism to work.
Optionally, the drilling manifold block (12) comprises six control ports (z1, z2, z3, y1, y2, y 3); the oil ports of the drilling pilot valve (6) comprise six working oil ports (a1, a2, a3, b1, b2 and b 3); the drilling multi-way valve group (12) comprises a first hydraulic control reversing valve (121), a second hydraulic control reversing valve (122) and a third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively used as control oil ports of the first hydraulic control reversing valve (121), the second hydraulic control reversing valve (122) and the third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively connected with the six working oil ports (a1, a2, a3, b1, b2 and b 3);
the walking multi-way valve group (10) comprises four control oil ports (x1, x2, w1 and w 2); the oil ports of the walking pilot valve (7) comprise four working oil ports (Xa1, Xa2, Xb1 and Xb 2); the walking multi-way valve group (10) comprises two fourth hydraulic control reversing valves (102); the four control oil ports (x1, x2, w1 and w2) are respectively used as control oil ports of the two fourth hydraulic control reversing valves (102), and the four control oil ports (x1, x2, w1 and w2) are respectively connected with the four working oil ports (Xa1, Xa2, Xb1 and Xb 2);
the posture-adjusting multi-way valve group (11) comprises twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u 10); the oil ports of the posture adjusting pilot valve (5) comprise twenty working oil ports (Ta1, Ta2, Ta3, Ta4, Ta5, Ta6, Ta7, Ta8, Ta9, Ta10, Tb1, Tb2, Tb3, Tb4, Tb5, Tb6, Tb7, Tb8, Tb9 and Tb 10); the posture adjusting multi-way valve bank (11) comprises ten fifth hydraulic control reversing valves (112); the twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u10) are respectively used as the control oil ports of the ten fifth hydraulic control reversing valves (112); the twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u10) are respectively connected with the twenty working oil ports (Ta1, Ta2, Ta3, Ta4, Ta5, Ta6, Ta7, Ta8, Ta9, Ta10, Tb1, Tb2, Tb3, Tb4, Tb5, Tb6, Tb7, Tb8, Tb9 and Tb 10).
optionally, the drilling actuator comprises a hydraulic motor (23), a feed cylinder (24), an anti-sticking drill valve set (13), a gripper (25) and a chuck (26); and/or the walking actuator comprises a left walking motor (27) and a right walking motor (28); and/or the posture adjusting actuating mechanism comprises a front upper supporting device (14), a lifting device (15), an upper rotating device (16), a lower rotating device (17), a rear upper supporting device (18), a left front lower supporting device (19), a right front lower supporting device (20), a left rear lower supporting device (21), a right rear lower supporting device (22) and a runway compensating device (27).
optionally, the pump motor control valve group (8) comprises a first pressure regulating valve (81), a second pressure regulating valve (82) and a throttle valve (83), and an oil inlet (P) of the pump motor control valve group (8) passes through the first pressure regulating valve (81) and the throttle valve (83) and is connected with the drilling actuator; an oil inlet (P) of the pump motor control valve group (8) is respectively connected with an oil inlet (P9) of the conversion valve (9), the drilling pilot valve (6), the walking pilot valve (7) and the posture adjusting pilot valve (5) through the second pressure regulating valve (82).
optionally, the oil ports of the switching valve (9) comprise an oil inlet (P9), an oil return port (T), and two working oil ports (a0, b 0); the posture-adjusting multi-way valve group (11) comprises a second combination valve group (111), the second combination valve group (111) comprises a control oil port (S0), and the control oil port (S0) is connected with the working oil port (a 0); the walking multi-way valve group (10) comprises a first combined valve group (101), the first combined valve group (101) comprises a control oil port (S1), and the control oil port (S1) is connected with the working oil port (b 0);
when the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the oil return port (T), and the two working oil ports (a0, b0) are communicated with the oil return port (T);
When the change-over valve (9) is in a middle position, the oil inlet (P9) is disconnected, and the two working oil ports (a0 and b0) are communicated with the oil return port (T);
When the switching valve (9) is in a rear position, the oil inlet (P9) is communicated with the two working oil ports (a0, b 0).
optionally, the switching valve (9) is a three-position five-way valve, and oil ports of the switching valve (9) comprise an oil inlet (P9), an oil return port (T), and three working oil ports (M1, M2, M3); the posture adjusting multi-way valve bank (11) comprises a second combination valve bank (111), and the second combination valve bank (111) comprises a control oil port (S0); the walking multi-way valve bank (10) comprises a first combined valve bank (101), and the first combined valve bank (101) comprises a control oil port (S1); the working oil port (M1) is respectively connected with the oil inlet (P7) of the walking pilot valve and the control oil port (S1), the working oil port (M2) is connected with the oil inlet (P6) of the drilling pilot valve, and the working oil port (M3) is respectively connected with the oil inlet (P5) of the posture adjusting pilot valve and the control oil port (S0);
When the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the working oil port (M2), and the two working oil ports (M1 and M3) are communicated with the oil return port (T);
when the change-over valve (9) is in a middle position, the oil inlet (P9) is communicated with the working oil port (M1), and the two working oil ports (M2 and M3) are communicated with the oil return port (T);
when the change-over valve (9) is at the rear position, the oil inlet (P9) is communicated with the working oil port (M3), and the two working oil ports (M1 and M2) are communicated with the oil return port (T).
Optionally, the pump motor control valve pack (8) further comprises a pressure measuring port (C2) for monitoring pressure.
optionally, the second hydraulic pump (3) is a load sensitive pump.
in order to solve the technical problem, the invention further provides a drilling machine, which comprises the hydraulic system of the drilling machine.
advantageous effects
the invention provides a hydraulic system of a drilling machine and the drilling machine, wherein the hydraulic system comprises: the drilling system comprises an electric motor (1), a first hydraulic pump (2), a second hydraulic pump (3), a drilling system, a traveling system, a posture adjusting system, a pump motor control valve group (8) and a change-over valve (9);
an oil outlet of the first hydraulic pump (2) is connected with an oil inlet (P') of the posture adjusting system and an oil inlet (P2) of the drilling system;
An oil outlet (B) of the second hydraulic pump (3) is connected with an oil inlet (P1) of the traveling system and the drilling system; a feedback oil port (X) of the second hydraulic pump (3) is sequentially connected with a feedback oil port (LS2) of the traveling system, an external feedback oil port (LS1) of the traveling system and a feedback oil port (LS) of the drilling system;
The pump motor control valve group (8) is respectively connected with the change-over valve (9), the drilling system, the traveling system and the posture adjusting system;
The pump motor control valve group (8) is used for adjusting oil inlet pressure of the drilling system, the traveling system and the attitude adjusting system;
the conversion valve (9) is used for controlling the working states of the drilling system, the walking system and the posture adjusting system;
through foretell hydraulic system, can control the operating condition of system of digging a drill, traveling system and accent appearance system, can realize when digging a drill system during operation, neither working of traveling system and accent appearance system, prevent that the maloperation from taking place the accident.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic illustration of a hydraulic system of a drilling rig provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a diverter valve (9) according to an embodiment of the present invention;
FIG. 3 is a schematic view of another switching valve (9) provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of yet another switching valve (9) provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic diagram of a first valve group assembly (101) according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a second valve combination (111) according to an embodiment of the present invention;
Fig. 7 is a schematic view of a further changeover valve (9) according to an embodiment of the present invention;
the reference numerals and components referred to in the drawings are as follows:
The hydraulic control system comprises an electric motor (1), a first hydraulic pump (2), a second hydraulic pump (3), a pump motor control valve group (8), a change-over valve (9), an oil inlet (P') of a posture adjusting system, an oil inlet (P2) of a drilling system, an oil inlet (P) of the pump motor control valve group (8) and an oil inlet (P9) of the change-over valve (9),
An oil outlet (B) of the second hydraulic pump (3), an oil inlet (P1) of the traveling system, two oil inlets (P ', P') of the drilling system, a feedback oil port (X) of the second hydraulic pump (3), a feedback oil port (LS2) of the traveling system, an external feedback oil port (LS1) of the traveling system, and a feedback oil port (LS) of the drilling system,
a drilling multi-way valve set (12), a drilling pilot valve (6), a walking multi-way valve set (10), a walking pilot valve (7), a posture adjusting multi-way valve set (11) and a posture adjusting pilot valve (5),
drilling six control oil ports (z1, z2, z3, y1, y2 and y3) of the multi-way valve group (12), drilling six working oil ports (a1, a2, a3, b1, b2 and b3) of the pilot valve (6), a first hydraulic control reversing valve (121), a second hydraulic control reversing valve (122) and a third hydraulic control reversing valve (123),
four control oil ports (x1, x2, w1 and w2) of the walking multi-way valve group (10), four working oil ports (Xa1, Xa2, Xb1 and Xb2) of the walking pilot valve (7), a fourth hydraulic control reversing valve (102),
Twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u10) of the posture-adjusting multi-way valve group (11), twenty working oil ports (Ta 10, Tb10) of the posture-adjusting pilot valve (5), a fifth hydraulic control reversing valve (112),
A hydraulic motor (23), a feeding oil cylinder (24), an anti-sticking drill valve group (13), a clamp holder (25), a chuck (26), a left walking motor (27), a right walking motor (28), a front upper supporting device (14), a lifting device (15), an upper slewing gear (16), a lower slewing gear (17), a rear upper supporting device (18), a left front lower supporting device (19), a right front lower supporting device (20), a left rear lower supporting device (21), a right rear lower supporting device (22), a runway compensating device (27), a first pressure regulating valve (81), a second pressure regulating valve (82), a throttle valve (83), and a pressure measuring port (C2) of a pump motor control valve group (8),
An oil return port (T) of a conversion valve (9), an oil inlet (P7) of a traveling pilot valve, an oil inlet (P6) of a drilling pilot valve, an oil inlet (P5) of a posture adjusting pilot valve, a first combined valve group (101), a second combined valve group (111),
fig. 1 to 3: two working oil ports (a0, b0) of a switch valve (9),
fig. 4 to 6: three working oil ports (L1, L2 and L3) of a change-over valve (9), an oil return port (T5), an oil outlet (A5), a working oil port (A5 ') of a second combined valve group (111), two control oil ports (j1 and j2), an oil inlet (P1), an oil return port (T6), an oil outlet (A6), a working oil port (A6') and two control oil ports (i1 and i2) of a first combined valve group 101,
FIG. 7: three working oil ports (M1, M2 and M3) of a switching valve (9) and a control oil port (S0) of a second combined valve group (111); and a control oil port (S1) of the first combined valve group (101).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present embodiment will provide a hydraulic system of a drilling rig, and referring to fig. 1, fig. 1 is a schematic diagram of the hydraulic system of the drilling rig provided by the present embodiment, and the hydraulic system of the drilling rig includes:
The drilling system comprises an electric motor (1), a first hydraulic pump (2), a second hydraulic pump (3), a drilling system, a traveling system, a posture adjusting system, a pump motor control valve group (8) and a change-over valve (9);
An oil outlet of the first hydraulic pump (2) is connected with an oil inlet (P') of the posture adjusting system and an oil inlet (P2) of the drilling system;
an oil outlet (B) of the second hydraulic pump (3) is connected with an oil inlet (P1) of the traveling system and the drilling system; a feedback oil port (X) of the second hydraulic pump (3) is sequentially connected with a feedback oil port (LS2) of the traveling system, an external feedback oil port (LS1) of the traveling system and a feedback oil port (LS) of the drilling system; optionally, an oil outlet (B) of the second hydraulic pump (3) is connected with two oil inlets (P ', P') of the drilling system;
The pump motor control valve group (8) is respectively connected with the change-over valve (9), the drilling system, the traveling system and the posture adjusting system;
The pump motor control valve group (8) is used for adjusting oil inlet pressure of the drilling system, the traveling system and the attitude adjusting system;
the conversion valve (9) is used for controlling the working states of the drilling system, the walking system and the posture adjusting system; namely, the conversion valve (9) is used for controlling whether the drilling system works, whether the walking system works and whether the posture adjusting system works;
through foretell hydraulic system, can control the operating condition of system of digging a drill, traveling system and accent appearance system, can realize when digging a drill system during operation, neither working of traveling system and accent appearance system, prevent that the maloperation from taking place the accident.
the pump motor control valve group (8) can be supplied with oil by adopting a second hydraulic pump (3) or a third hydraulic pump;
the pump motor control valve group (8) is used for adjusting the displacement of the hydraulic motor (23), adjusting the working pressure of an oil inlet (P9) of the change-over valve (9) and a pilot system, and adjusting the working pressure of the pilot system, namely adjusting the oil inlet pressure of an oil inlet (P5) of the posture-adjusting pilot valve (5), an oil inlet (P6) of the drilling pilot valve (6) and an oil inlet (P7)) of the walking pilot valve (7).
optionally, in this embodiment, the drilling system includes a drilling multi-way valve set (12), and a drilling pilot valve (6) and a drilling actuator respectively connected to the drilling multi-way valve set (12); the drilling pilot valve (6) controls the drilling multi-way valve bank (12) to work, and further controls the drilling actuating mechanism to work;
The walking system comprises a walking multi-way valve group (10), a walking pilot valve (7) and a walking actuating mechanism, wherein the walking pilot valve (7) and the walking actuating mechanism are respectively connected with the walking multi-way valve group (10); the walking pilot valve (7) controls the walking multi-way valve group (10) to work, and further controls the walking actuating mechanism to work;
The posture adjusting system comprises a posture adjusting multi-way valve group (11), a posture adjusting pilot valve (5) and a posture adjusting actuating mechanism, wherein the posture adjusting pilot valve (5) and the posture adjusting actuating mechanism are respectively connected with the posture adjusting multi-way valve group (11); the posture adjusting pilot valve (5) controls the posture adjusting multi-way valve set (11) to work, and further controls the posture adjusting actuating mechanism to work.
Optionally, in the present embodiment, the drilling multiple-way valve group (12) includes six control ports (z1, z2, z3, y1, y2, y 3); the oil ports of the drilling pilot valve (6) comprise six working oil ports (a1, a2, a3, b1, b2 and b 3); the drilling multi-way valve group (12) comprises a first hydraulic control reversing valve (121), a second hydraulic control reversing valve (122) and a third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively used as control oil ports of the first hydraulic control reversing valve (121), the second hydraulic control reversing valve (122) and the third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively connected with six working oil ports (a1, a2, a3, b1, b2 and b 3);
the walking multi-way valve group (10) comprises four control oil ports (x1, x2, w1 and w 2); the oil ports of the walking pilot valve (7) comprise four working oil ports (Xa1, Xa2, Xb1 and Xb 2); the walking multi-way valve group (10) comprises two fourth hydraulic control reversing valves (102); the four control oil ports (x1, x2, w1 and w2) are respectively used as control oil ports of two fourth hydraulic control reversing valves (102), and the four control oil ports (x1, x2, w1 and w2) are respectively connected with four working oil ports (Xa1, Xa2, Xb1 and Xb 2);
the posture-adjusting multi-way valve group (11) comprises twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u 10); the oil ports of the posture adjusting pilot valve (5) comprise twenty working oil ports (Ta1, Ta2, Ta3, Ta4, Ta5, Ta6, Ta7, Ta8, Ta9, Ta10, Tb1, Tb2, Tb3, Tb4, Tb5, Tb6, Tb7, Tb8, Tb9 and Tb 10); the posture-adjusting multi-way valve group (11) comprises ten fifth hydraulic control reversing valves (112); twenty control oil ports (v, u) are respectively used as control oil ports of ten fifth hydraulic control reversing valves (112), and the twenty control oil ports (v, u) are respectively connected with twenty working oil ports (Ta, Tb and Tb).
optionally, in the embodiment, the drilling actuator comprises a hydraulic motor (23), a feed cylinder (24), an anti-sticking drill valve group (13), a clamper (25) and a chuck (26); and/or the walking actuator comprises a left walking motor (27) and a right walking motor (28); and/or the posture adjusting actuating mechanism comprises a front upper supporting device (14), a lifting device (15), an upper rotating device (16), a lower rotating device (17), a rear upper supporting device (18), a left front lower supporting device (19), a right front lower supporting device (20), a left rear lower supporting device (21), a right rear lower supporting device (22) and a runway compensating device (27).
optionally, in this embodiment, the pump-motor control valve group (8) includes a first pressure regulating valve (81), a second pressure regulating valve (82) and a throttle valve (83), an oil inlet (P) of the pump-motor control valve group (8) passes through the first pressure regulating valve (81) and the throttle valve (83) and then is connected to the drilling actuator, and optionally, the oil inlet (P) of the pump-motor control valve group (8) passes through the first pressure regulating valve (81) and the throttle valve (83) and then is connected to a control oil port of the hydraulic motor (23), so as to control an opening of the hydraulic motor (23), that is, to control a flow rate of the hydraulic motor (23), that is, to control an output rotation speed of the hydraulic motor (23); an oil inlet (P) of the pump motor control valve group (8) is respectively connected with an oil inlet (P9) of the conversion valve (9), the drilling pilot valve (6), the walking pilot valve (7) and the posture adjusting pilot valve (5) through a second pressure regulating valve (82).
The first pressure regulating valve (81) is used for reducing the pressure of oil (used for a propulsion and attitude adjusting system of a drilling system, the pressure is usually set to be about 15 MPa) of the first hydraulic pump (2) (6.9-41.4 bar, 1bar is 0.1 MPa), and the use of high-pressure oil can cause the rear-end throttle valve (83) to generate heat and the throttle valve (83) to be difficult to adjust, namely, the pressure is too high and can be adjusted by a large force); the throttle valve (83) is an adjustable throttle valve, and is used for adjusting the flow, but the pressure is reduced, and the throttle valve is realized by the pressure reduction (if the throttle valve is only used, the pressure is not easy to accurately adjust due to too fast pressure change).
in actual operation, the value of the first pressure regulating valve (81) is set, and the opening of the hydraulic motor (23) is changed by regulating the throttle valve (83), so that the rotating speed of the hydraulic motor (23), namely the rotating speed of the drilling machine, can be regulated.
The second pressure regulating valve (82) can also be called a pressure reducing valve, the function of the pressure reducing valve is the same as that of the first pressure regulating valve (81), and the second pressure regulating valve can be adjusted (because the general working pressure of the pilot valve is 3.5 MPa).
optionally, in this embodiment, the pump motor control valve set (8) further comprises a pressure measuring port (C2) for monitoring the pressure. The pressure measuring port (C2) may perform the function of monitoring the pressure therein by being connected to a pressure measuring device, such as a pressure gauge, a pressure sensor, etc.
Optionally, in one embodiment, the oil ports of the switching valve (9) include an oil inlet (P9), an oil return (T), two working oil ports (a0, b 0); the posture-adjusting multi-way valve group (11) comprises a second combined valve group (111), the second combined valve group (111) comprises a control oil port (S0), and the control oil port (S0) is connected with the working oil port (a 0); the walking multi-way valve group (10) comprises a first combined valve group (101), the first combined valve group (101) comprises a control oil port (S1), and the control oil port (S1) is connected with a working oil port (b 0);
when the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the oil return port (T), and the two working oil ports (a0 and b0) are communicated with the oil return port (T);
When the change-over valve (9) is in the middle position, the oil inlet (P9) is disconnected, and the two working oil ports (a0 and b0) are communicated with the oil return port (T);
When the switching valve (9) is at the rear position, the oil inlet (P9) is communicated with the two working oil ports (a0, b 0).
optionally, when the change-over valve (9) is in the front position, referring to fig. 1, the oil inlet (P9) of the change-over valve (9) is communicated with the oil return port (T), and the working oil ports (a0, b0) are communicated with the oil return port (T); or referring to fig. 2, when the switching valve (9) is in the forward position, the working oil port (a0) is communicated with the working oil port (b 0); or referring to fig. 3, when the change-over valve (9) is in the forward position, the working oil port (a0) and the working oil port (b0) are disconnected; the drilling system, the walking system and the posture adjusting system do not work;
when the change-over valve (9) is in the middle position, the working oil ports (a0, b0) are communicated with the oil return port (T), and the oil inlet (P9) of the change-over valve (9) is blocked; when the drilling system works, the oil is not communicated with the working oil port (a0), and the oil of the first hydraulic pump (2) reaches an oil inlet (P2) of the drilling system through the first link of the attitude adjusting system; the traveling system and the posture adjusting system do not work, the working oil port (b0) is not communicated with oil, the oil of the second hydraulic pump (3) reaches the drilling system through the first link of the traveling system, and the control oil of the second hydraulic pump (3) sequentially reaches the feedback oil port (LS) of the drilling system through the feedback oil port (X) and the first link of the traveling system;
when the switching valve (9) is at the rear position, the oil inlet (P9) of the switching valve (9) is connected with the working oil ports (a0 and b 0); the walking system and the posture adjusting system work, and the drilling system does not work; when the working oil port (a0) is filled with oil, the oil of the first hydraulic pump (2) enters the posture adjusting system; when the working oil port (b0) is filled with oil, the oil of the second hydraulic pump (3) enters the traveling system.
by the arrangement, the posture adjustment and walking can not be carried out during drilling; the drill can not be drilled during posture adjustment and walking, and the aim is to prevent accidents caused by misoperation. The walking is usually arranged at the rear end of the drilling machine and is not in the same place with the drilling pilot valve (6) and the posture adjusting pilot valve (5), so that misoperation generally cannot occur. The posture adjustment and the walking are arranged together, because the walking operation and the posture adjustment operation are arranged in different places, the misoperation chance is small; and simultaneously, a working condition that all functions are closed can be set.
Optionally, in another embodiment, referring to fig. 4, the switching valve (9) is a three-position five-way valve, and the oil ports of the switching valve (9) include an oil inlet (P9), an oil return port (T), and three working oil ports (L1, L2, L3); referring to fig. 5, the walking multi-way valve bank (10) comprises a first combination valve bank (101), and referring to fig. 6, the posture-adjusting multi-way valve bank (11) comprises a second combination valve bank (111);
The oil ports of the second combined valve group (111) comprise an oil inlet (P '), an oil return port (T5), an oil outlet (A5), a working oil port (A5 '), two control oil ports (j1, j2), and the working oil port (A5 ') is connected with ten fifth hydraulic control reversing valves (112);
The oil ports of the first combined valve group 101 comprise an oil inlet (P1), an oil return port (T6), an oil outlet (A6), a working oil port (A6 '), a feedback oil port (LS2), an external feedback oil port (LS1) and two control oil ports (i1 and i2), the oil outlet (A6) is connected with two oil inlets (P' and P ') of a drilling system, namely the oil outlet (A6) is communicated with the drilling system, and the working oil port (A6') is connected with two fourth hydraulic control reversing valves (102);
the working oil port (L1) is respectively connected with the control oil port (i1) and the control oil port (j1), the working oil port (L2) is connected with the control oil port (j2), and the working oil port (L3) is connected with the control oil port (i 2);
when the change-over valve (9) is in a front position, an oil inlet (P9) of the change-over valve (9) is connected with a working oil port (L1), the first combination valve group (101) and the second combination valve group (111) are both in a front position, an oil inlet (P1) of the first combination valve group 101 is communicated with an oil outlet (A6), and at the moment, oil of the second hydraulic pump (3) enters a drilling system; an oil inlet (P') of the second combined valve group (111) is communicated with an oil outlet (A5), and oil of the second hydraulic pump (3) enters a drilling system at the moment; at the moment, the drilling system works, and the posture adjusting system and the walking system do not work;
when the change-over valve (9) is located at a middle position, an oil inlet (P9) of the change-over valve (9) is communicated with a working oil port (L2), the second combination valve group (111) is located at a rear position, at the moment, oil of the second hydraulic pump (3) goes to the posture-adjusting multi-way valve group (11), the first combination valve group (101) is located at the middle position, an oil inlet (P1) of the first combination valve group (101) is communicated with an oil return port (T6), at the moment, oil of the second hydraulic pump (3) directly returns to an oil tank, at the moment, the posture-adjusting system works, and the drilling system and the traveling;
when change-over valve (9) is in the back position, oil inlet (P9) and the working oil mouth (L3) intercommunication of change-over valve (9), first combination valves (101) are in the back position, the oil of second hydraulic pump (3) goes walking multichannel valves (10) this moment, second combination valves (111) are in the meso position, oil inlet (P' ") and oil return opening (T5) intercommunication of second combination valves 111, the direct oil return case of oil of first hydraulic pump (2), at this moment, the traveling system work, the appearance system of transferring does not work with the system of drilling.
Namely drilling in the front position, adjusting the posture in the middle position and walking in the back position.
Optionally, in yet another embodiment, referring to fig. 7, the switching valve (9) is a three-position five-way valve, and the oil ports of the switching valve (9) include an oil inlet (P9), an oil return port (T), and three working oil ports (M1, M2, M3); the posture adjusting multi-way valve bank (11) comprises a second combined valve bank (111), and the second combined valve bank (111) comprises a control oil port (S0); the walking multi-way valve group (10) comprises a first combined valve group (101), and the first combined valve group (101) comprises a control oil port (S1); the working oil port (M1) is respectively connected with the oil inlet (P7) and the control oil port (S1) of the walking pilot valve, the working oil port (M2) is connected with the oil inlet (P6) of the drilling pilot valve, and the working oil port (M3) is respectively connected with the oil inlet (P5) and the control oil port (S0) of the posture-adjusting pilot valve;
when the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the working oil port (M2), and the two working oil ports (M1 and M3) are communicated with the oil return port (T);
when the change-over valve (9) is in a middle position, the oil inlet (P9) is communicated with the working oil port (M1), and the two working oil ports (M2 and M3) are communicated with the oil return port (T);
When the change-over valve (9) is at the rear position, the oil inlet (P9) is communicated with the working oil port (M3), and the two working oil ports (M1 and M2) are communicated with the oil return port (T).
Optionally, when the change-over valve (9) is in the front position, the oil inlet (P9) and the oil inlet (P6) of the change-over valve (9) are communicated, and the oil inlet (P7) of the walking pilot valve, the oil inlet (P5) of the posture-adjusting pilot valve, the control oil port (S1) and the control oil port (S0) are communicated with the oil return port (T); the drilling pilot valve (6) is filled with oil, the drilling system works, the posture adjusting pilot valve (5) and the walking pilot valve (7) cannot act, the posture adjusting system and the walking system do not work, and the oil of the first hydraulic pump (2) and the oil of the second hydraulic pump (3) enter the drilling system;
when the change-over valve (9) is in the middle position, the oil inlet (P9) of the change-over valve (9) is communicated with the oil inlet (P7) and the control oil port (S1) of the walking pilot valve; the oil inlet (P5) of the posture adjusting pilot valve, the control oil port (S0), the oil inlet (P6) of the drilling pilot valve are communicated with the oil return port (T); the oil is introduced into the traveling pilot valve (7), the oil of the first hydraulic pump (2) enters the traveling system, the traveling system works, and the attitude adjusting system and the drilling system do not work;
when the change-over valve (9) is at the rear position, the oil inlet (P9) of the change-over valve (9) is communicated with the oil inlet (P5) and the control oil port (S0) of the posture adjusting pilot valve; the oil inlet (P6) of the drilling pilot valve, the control oil port (S1) and the oil inlet (P7) of the walking pilot valve are communicated with the oil return port (T); the posture adjusting pilot valve is filled with oil, the oil of the second hydraulic pump (3) enters the posture adjusting system, and the traveling system and the drilling system do not work.
set up like this, all set up traveling system, the system of drilling and the appearance system of transferring into interlocking mode, prevent that the maloperation from taking place danger.
Optionally, in the fig. 1, an oil outlet of the first hydraulic pump (2) is connected to an oil inlet (P '") of the posture adjusting system, and is connected to an oil inlet (P2) of the drilling system after passing through the second combination valve set (111), that is, a second combination valve set (111) is arranged between (P'") and (P2);
optionally, in fig. 1, an oil outlet (B) of the second hydraulic pump (3) and an oil inlet (P1) of the traveling system are connected to the drilling system after passing through the first combination valve set (101), that is, there is a first combination valve set (101) between (P1) and the drilling system.
optionally, in this embodiment, the second hydraulic pump (3) is a load sensitive pump, with a nominal flow rate that is typically greater than the first hydraulic pump (2).
In order to solve the technical problem, the invention further provides a drilling machine, which comprises the hydraulic system of the drilling machine.
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.

Claims (10)

1. A hydraulic system of a drilling rig, comprising: the drilling system comprises an electric motor (1), a first hydraulic pump (2), a second hydraulic pump (3), a drilling system, a traveling system, a posture adjusting system, a pump motor control valve group (8) and a change-over valve (9);
An oil outlet of the first hydraulic pump (2) is connected with an oil inlet (P') of the posture adjusting system and an oil inlet (P2) of the drilling system;
an oil outlet (B) of the second hydraulic pump (3) is connected with an oil inlet (P1) of the traveling system and the drilling system; a feedback oil port (X) of the second hydraulic pump (3) is sequentially connected with a feedback oil port (LS2) of the traveling system, an external feedback oil port (LS1) of the traveling system and a feedback oil port (LS) of the drilling system;
The pump motor control valve group (8) is respectively connected with the change-over valve (9), the drilling system, the traveling system and the attitude adjusting system;
The pump motor control valve group (8) is used for adjusting oil inlet pressure of the drilling system, the traveling system and the attitude adjusting system;
And the switching valve (9) is used for controlling the working states of the drilling system, the walking system and the posture adjusting system.
2. The hydraulic system according to claim 1, characterized in that the drilling system comprises a drilling multiple valve set (12), and a drilling pilot valve (6) and a drilling actuator respectively connected to the drilling multiple valve set (12); the drilling pilot valve (6) controls the drilling multi-way valve bank (12) to work, and further controls the drilling actuating mechanism to work;
the walking system comprises a walking multi-way valve group (10), and a walking pilot valve (7) and a walking actuating mechanism which are respectively connected with the walking multi-way valve group (10); the walking pilot valve (7) controls the walking multi-way valve group (10) to work, and further controls the walking actuating mechanism to work;
The posture adjusting system comprises a posture adjusting multi-way valve group (11), and a posture adjusting pilot valve (5) and a posture adjusting actuating mechanism which are respectively connected with the posture adjusting multi-way valve group (11); the posture adjusting pilot valve (5) controls the posture adjusting multi-way valve set (11) to work, and further controls the posture adjusting actuating mechanism to work.
3. The hydraulic system of claim 2, wherein the drilling manifold (12) includes six control ports (z1, z2, z3, y1, y2, y 3); the oil ports of the drilling pilot valve (6) comprise six working oil ports (a1, a2, a3, b1, b2 and b 3); the drilling multi-way valve group (12) comprises a first hydraulic control reversing valve (121), a second hydraulic control reversing valve (122) and a third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively used as control oil ports of the first hydraulic control reversing valve (121), the second hydraulic control reversing valve (122) and the third hydraulic control reversing valve (123); the six control oil ports (z1, z2, z3, y1, y2 and y3) are respectively connected with the six working oil ports (a1, a2, a3, b1, b2 and b 3);
the walking multi-way valve group (10) comprises four control oil ports (x1, x2, w1 and w 2); the oil ports of the walking pilot valve (7) comprise four working oil ports (Xa1, Xa2, Xb1 and Xb 2); the walking multi-way valve group (10) comprises two fourth hydraulic control reversing valves (102); the four control oil ports (x1, x2, w1 and w2) are respectively used as control oil ports of the two fourth hydraulic control reversing valves (102), and the four control oil ports (x1, x2, w1 and w2) are respectively connected with the four working oil ports (Xa1, Xa2, Xb1 and Xb 2);
the posture-adjusting multi-way valve group (11) comprises twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u 10); the oil ports of the posture adjusting pilot valve (5) comprise twenty working oil ports (Ta1, Ta2, Ta3, Ta4, Ta5, Ta6, Ta7, Ta8, Ta9, Ta10, Tb1, Tb2, Tb3, Tb4, Tb5, Tb6, Tb7, Tb8, Tb9 and Tb 10); the posture adjusting multi-way valve bank (11) comprises ten fifth hydraulic control reversing valves (112); the twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u10) are respectively used as the control oil ports of the ten fifth hydraulic control reversing valves (112); the twenty control oil ports (v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, u1, u2, u3, u4, u5, u6, u7, u8, u9 and u10) are respectively connected with the twenty working oil ports (Ta1, Ta2, Ta3, Ta4, Ta5, Ta6, Ta7, Ta8, Ta9, Ta10, Tb1, Tb2, Tb3, Tb4, Tb5, Tb6, Tb7, Tb8, Tb9 and Tb 10).
4. the hydraulic system of claim 2, wherein the drilling actuator comprises a hydraulic motor (23), a feed cylinder (24), an anti-seize valve block (13), a gripper (25) and a chuck (26); and/or the walking actuator comprises a left walking motor (27) and a right walking motor (28); and/or the posture adjusting actuating mechanism comprises a front upper supporting device (14), a lifting device (15), an upper rotating device (16), a lower rotating device (17), a rear upper supporting device (18), a left front lower supporting device (19), a right front lower supporting device (20), a left rear lower supporting device (21), a right rear lower supporting device (22) and a runway compensating device (27).
5. The hydraulic system according to claim 2, characterized in that the pump motor control valve group (8) comprises a first pressure regulating valve (81), a second pressure regulating valve (82) and a throttle valve (83), and an oil inlet (P) of the pump motor control valve group (8) passes through the first pressure regulating valve (81) and the throttle valve (83) and is connected with the drilling actuator; an oil inlet (P) of the pump motor control valve group (8) is respectively connected with an oil inlet (P9) of the conversion valve (9), the drilling pilot valve (6), the walking pilot valve (7) and the posture adjusting pilot valve (5) through the second pressure regulating valve (82).
6. The hydraulic system according to any one of claims 2 to 5, wherein the oil ports of the switching valve (9) include an oil inlet port (P9), an oil return port (T), two working oil ports (a0, b 0); the posture-adjusting multi-way valve group (11) comprises a second combination valve group (111), the second combination valve group (111) comprises a control oil port (S0), and the control oil port (S0) is connected with the working oil port (a 0); the walking multi-way valve group (10) comprises a first combined valve group (101), the first combined valve group (101) comprises a control oil port (S1), and the control oil port (S1) is connected with the working oil port (b 0);
when the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the oil return port (T), and the two working oil ports (a0, b0) are communicated with the oil return port (T);
When the change-over valve (9) is in a middle position, the oil inlet (P9) is disconnected, and the two working oil ports (a0 and b0) are communicated with the oil return port (T);
When the switching valve (9) is in a rear position, the oil inlet (P9) is communicated with the two working oil ports (a0, b 0).
7. the hydraulic system according to any one of claims 2 to 5, characterized in that the switching valve (9) is a three-position five-way valve, and the oil ports of the switching valve (9) include an oil inlet port (P9), an oil return port (T), three working oil ports (M1, M2, M3); the posture adjusting multi-way valve bank (11) comprises a second combination valve bank (111), and the second combination valve bank (111) comprises a control oil port (S0); the walking multi-way valve bank (10) comprises a first combined valve bank (101), and the first combined valve bank (101) comprises a control oil port (S1); the working oil port (M1) is respectively connected with the oil inlet (P7) of the walking pilot valve and the control oil port (S1), the working oil port (M2) is connected with the oil inlet (P6) of the drilling pilot valve, and the working oil port (M3) is respectively connected with the oil inlet (P5) of the posture adjusting pilot valve and the control oil port (S0);
when the change-over valve (9) is in a front position, the oil inlet (P9) is communicated with the working oil port (M2), and the two working oil ports (M1 and M3) are communicated with the oil return port (T);
when the change-over valve (9) is in a middle position, the oil inlet (P9) is communicated with the working oil port (M1), and the two working oil ports (M2 and M3) are communicated with the oil return port (T);
when the change-over valve (9) is at the rear position, the oil inlet (P9) is communicated with the working oil port (M3), and the two working oil ports (M1 and M2) are communicated with the oil return port (T).
8. a hydraulic system as claimed in any one of claims 1 to 5, characterized in that the pump motor control valve block (8) further comprises a pressure measurement port (C2) for monitoring the pressure.
9. hydraulic system according to any of claims 1 to 5, characterized in that the second hydraulic pump (3) is a load sensitive pump.
10. a drilling rig, characterized by comprising a hydraulic system of a drilling rig according to any one of claims 1-9.
CN201910938512.5A 2019-09-30 2019-09-30 Hydraulic system of drilling machine and drilling machine Pending CN110566525A (en)

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CN201910938512.5A CN110566525A (en) 2019-09-30 2019-09-30 Hydraulic system of drilling machine and drilling machine

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Application Number Priority Date Filing Date Title
CN201910938512.5A CN110566525A (en) 2019-09-30 2019-09-30 Hydraulic system of drilling machine and drilling machine

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Publication Number Publication Date
CN110566525A true CN110566525A (en) 2019-12-13

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CN201910938512.5A Pending CN110566525A (en) 2019-09-30 2019-09-30 Hydraulic system of drilling machine and drilling machine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112196847A (en) * 2020-10-12 2021-01-08 江苏煤炭地质机械研制中心 Hydraulic system of drilling machine actuating mechanism and working method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112196847A (en) * 2020-10-12 2021-01-08 江苏煤炭地质机械研制中心 Hydraulic system of drilling machine actuating mechanism and working method thereof

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