WO2020119691A1 - Jumbo de forage et système de commande hydraulique en avant associé - Google Patents

Jumbo de forage et système de commande hydraulique en avant associé Download PDF

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Publication number
WO2020119691A1
WO2020119691A1 PCT/CN2019/124393 CN2019124393W WO2020119691A1 WO 2020119691 A1 WO2020119691 A1 WO 2020119691A1 CN 2019124393 W CN2019124393 W CN 2019124393W WO 2020119691 A1 WO2020119691 A1 WO 2020119691A1
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WO
WIPO (PCT)
Prior art keywords
valve
way
hydraulic control
directional valve
propulsion
Prior art date
Application number
PCT/CN2019/124393
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English (en)
Chinese (zh)
Inventor
刘飞香
程永亮
刘在政
刘伟
张廷寿
李仕辉
张玉良
康磊
胡鑫乐
Original Assignee
铁建重工新疆有限公司
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Publication of WO2020119691A1 publication Critical patent/WO2020119691A1/fr

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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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor

Definitions

  • the invention relates to the field of tunnel excavation equipment, in particular to a propulsion hydraulic control system of a rock drilling trolley.
  • the invention also relates to a rock drilling trolley including the above-mentioned propulsion hydraulic control system.
  • Rock drilling trolley is a kind of rock drilling equipment used for narrow ore veins. It is generally directly controlled by full hydraulic pressure and has the functions of connecting rod drilling and unloading rod storage. When carrying out rock drilling operations, it is necessary to meet several speed requirements for the hydraulic rock drilling trolley's hole advancing speed, rock advancing speed, hole drilling fast retreat speed and no-load advancing fast forward and fast return. In the process of opening holes and rock drilling, when encountering complex geology such as fissures and karst caves, the phenomenon of empty travel of rock drilling is easy to occur, that is, the phenomenon of empty hitting. If the speed is not adjusted and controlled, the propulsion speed is too fast and the speed is not affected.
  • the purpose of the present invention is to provide a propulsion hydraulic control system for a rock drilling trolley, which can adjust the propulsion speed as required, reduce the difficulty of operation, and improve the work efficiency.
  • Another object of the present invention is to provide a rock drilling trolley including the above-mentioned propulsion hydraulic control system.
  • the present invention provides a propulsion hydraulic control system for a rock drilling trolley, which includes a hydraulic pump, a propulsion oil cylinder and a multi-way reversing valve for controlling the reversal of the propulsion oil cylinder.
  • the two working oil ports of the valve are connected to the oil inlet and outlet ports of the first electromagnetic commutation throttle device and the second electromagnetic commutation throttle device respectively, and the first electromagnetic commutation throttle device passes the first hydraulic control commutation in parallel
  • the valve and the second hydraulic control valve communicate with the rodless cavity of the propulsion cylinder
  • the second electromagnetic commutation throttle device communicates with the rod cavity of the propulsion cylinder
  • the propulsion hydraulic control system further includes a serial Three one-way throttle valves and a fourth one-way throttle valve, the third one-way throttle valve is connected in parallel with the first hydraulically controlled directional valve, the fourth one-way throttle valve and the first
  • the hydraulic control directional valve is connected in series and connected in parallel with the second hydraulic control directional valve
  • the first hydraulic control directional valve can receive the pilot control oil with a low impact opening
  • the second hydraulic control directional valve can receive the impact Total pilot control oil
  • the first hydraulic control directional valve and the second hydraulic control directional valve can switch the working position according to the
  • the set flow rate of the third one-way throttle valve is smaller than the set flow rate of the fourth one-way throttle valve.
  • the first hydraulic control directional valve and the second hydraulic control directional valve are specifically two-position three-way hydraulic control directional valves, and the hydraulic control port of the two-position three-way hydraulic control directional valve has high pressure.
  • the oil inlet and outlet are isolated, the oil inlet and outlet are connected when the hydraulic control port of the two-position three-way hydraulic control valve is relieved of pressure.
  • the hydraulic control port of the two-position three-way hydraulic control directional valve receives pilot control oil through damping.
  • the multi-way directional valve is specifically a three-position six-way directional valve.
  • the three-position six-way directional valve When the three-position six-way directional valve is in the first working position, hydraulic oil can enter the rodless cavity of the propulsion cylinder.
  • the three-position six-way directional valve When the three-position six-way directional valve is in the second working position, hydraulic oil can enter the rod cavity of the propulsion cylinder, and the three-position six-way directional valve is in the unloaded state when it is in the third working position.
  • a safety check valve and a relief valve are provided between the three-position six-way reversing valve and the hydraulic pump.
  • the first electromagnetic commutation throttle device includes a first electromagnetic commutation valve and a first one-way throttle valve
  • the second electromagnetic commutation throttle device includes a second electromagnetic commutation valve and a second one-way throttle valve
  • the two working oil ports of the multi-way directional valve communicate with the inlet and outlet ports of the first electromagnetic directional valve and the second electromagnetic directional valve respectively, and one working oil of the first electromagnetic directional valve
  • the first one-way throttle valve is connected to the third one-way throttle valve, and the other working oil port of the first electromagnetic directional valve is directly connected to the third one-way throttle valve
  • the second One working port of the electromagnetic directional valve is connected to the rod cavity of the propulsion cylinder through a second one-way throttle valve
  • the other working port of the second electromagnetic directional valve is directly connected to the rod of the propulsion cylinder Cavity.
  • the first electromagnetic directional valve and the second electromagnetic directional valve are specifically two-position three-way electromagnetic directional valves.
  • the two-position three-way electromagnetic directional valve When the two-position three-way electromagnetic directional valve is in the first working position, it is directly connected In the propulsion cylinder, when the two-position three-way electromagnetic directional valve is in the second working position, the propulsion cylinder is communicated through a one-way throttle valve.
  • the present invention provides a rock drilling trolley including a propulsion hydraulic control system.
  • the propulsion hydraulic control system is specifically any of the propulsion hydraulic control systems described above.
  • the rock drilling trolley is specifically a medium-deep hole rock drilling trolley.
  • the invention provides a propulsion hydraulic control system of a rock drilling trolley, which includes a hydraulic pump, a propulsion oil cylinder and a multi-way directional valve for controlling the reversal of the propulsion oil cylinder.
  • the two working oil ports of the multi-way directional valve communicate with the first An electromagnetic commutation throttle device and a second electromagnetic commutation throttle device oil inlet and outlet, the first electromagnetic commutation throttle device is connected in parallel through the first hydraulic control valve and the second hydraulic control valve to propel the cylinder Rod-less cavity, the second electromagnetic commutation throttle device communicates with the rod cavity of the propulsion cylinder, and also includes a third unidirectional throttle valve and a fourth unidirectional throttle valve connected in series, the third unidirectional throttle valve and the A hydraulic control directional valve is connected in parallel, a fourth one-way throttle valve is connected in series with the first hydraulic control directional valve, and is connected in parallel with the second hydraulic control directional valve, the first hydraulic control directional valve can receive the pilot control of opening low impact Oil, the
  • the propulsion speed of rock drilling mode is divided into working conditions and grades, and the propulsion speed is switched according to different impact conditions.
  • the propulsion speed requirements the general requirements for opening propulsion speed are the lowest, followed by rock drilling propulsion speed, and the air thrust process is generally full speed to improve work efficiency.
  • the maximum speed of hole opening and rock drilling propulsion is set by a one-way throttle valve, and the control pilot oil of the hole opening mode and impact conditions is fed back to the control system, so that different propulsion speed modes are automatically matched.
  • the throttling speed is used to set the advancement speed of the unloading lever to match the rotation speed.
  • the invention also provides a rock drilling trolley including the above propulsion hydraulic control system. Since the propulsion hydraulic control system has the above technical effects, the above rock drilling trolley should also have the same technical effect, which will not be described in detail here.
  • FIG. 1 is a hydraulic principle diagram of a specific embodiment of a propulsion hydraulic control system provided by the present invention.
  • the core of the present invention is to provide a propulsion hydraulic control system for a rock drilling trolley, which can adjust the propulsion speed according to needs, reduce the operation difficulty, and improve the work efficiency.
  • Another core of the present invention is to provide a rock drilling trolley including the above propulsion hydraulic control system.
  • FIG. 1 is a hydraulic schematic diagram of a specific embodiment of a propulsion hydraulic control system provided by the present invention.
  • a specific embodiment of the present invention provides a propulsion hydraulic control system for a rock drilling trolley, including a hydraulic pump 2, a propulsion cylinder 16, and a multi-way directional valve 3, wherein the hydraulic pump 2 is driven by a motor 1, and the multi-way directional valve 3 is The hydraulic pump 2 and the propulsion cylinder 16 are connected to control the reversal of the propulsion cylinder 16.
  • a safety check valve 5 and a relief valve 4 may also be provided between the multi-way valve 3 and the hydraulic pump 2.
  • the multi-way directional valve 3 may be a three-position six-way directional valve.
  • the three-position six-way directional valve When the three-position six-way directional valve is in the first working position, its oil inlet P communicates with the second working oil port B, and the oil return port T Connected to the first working oil port A, so that high-pressure oil can enter the rodless cavity of the propulsion cylinder 16, the low-pressure oil in the rod cavity flows back to the oil tank, and the oil inlet of the three-position six-way directional valve is in the second working position P is connected to the first working oil port A, and the oil return port T is connected to the second working oil port B.
  • the high-pressure oil can enter the rod cavity of the propulsion cylinder 16, the low-pressure oil in the rodless cavity flows back to the tank, and the three-position six-way reversal
  • the valve When the valve is in the third working position, the inlet port P, the return port T, the first working port A and the second working port B are all isolated, and the three-position six-way directional valve is in communication with the middle working port ,
  • the oil inlet is directly connected to the oil tank and is in the unloaded state. At this time, the motor 1 is started and the hydraulic pump 2 is unloaded and started.
  • Other types of directional valves can also be used, which are all within the protection scope of the present invention.
  • the propulsion hydraulic control system provided by the specific embodiment of the present invention further includes a first electromagnetic commutation throttle device, a second electromagnetic commutation throttle device, a third one-way throttle valve 10, and a fourth one-way throttle valve 11.
  • the two working oil ports A and B of the multi-way directional valve 3 are connected to the oil inlets and outlets of the first electromagnetic directional throttle device and the second electromagnetic directional throttle device.
  • the first electromagnetic directional throttle device is connected in parallel
  • the first hydraulic control directional valve 12 and the second hydraulic control directional valve 13 communicate with the rodless cavity of the propulsion cylinder 16
  • the second electromagnetic directional throttle device communicates with the rod cavity of the propulsion cylinder 16
  • the third one-way throttle valve 10 is connected in parallel with the first hydraulic control valve 12
  • the fourth one-way throttle valve 11 is connected in parallel with the first hydraulic control valve 12 and the second hydraulic control valve 13
  • the first hydraulic control valve 12 can Receiving the open hole low-impact pilot control oil KK
  • the second hydraulic control valve 13 can receive the impact total pilot control oil CJ
  • the first hydraulic control valve 12 and the second hydraulic control valve 13 can control the oil according to the pilot
  • the state switches working positions to control whether hydraulic oil enters and exits the rodless chamber of the propulsion cylinder 16 through the third one
  • first hydraulically controlled directional valve 12 and the second hydraulically controlled directional valve 13 are specifically two-position three-way hydraulically controlled directional valves.
  • other types of directional valves can also be used.
  • the hydraulic control port of the directional valve is isolated at high pressure.
  • the hydraulic control port of the two-position three-way hydraulic control valve is always open when the hydraulic port is discharged.
  • the hydraulic control port of the two-position three-way hydraulic directional valve receives the pilot control oil through damping.
  • the working process is as follows: when the rock drilling trolley is in the open hole working mode, the total impact pilot control oil CJ and the open hole low impact pilot control oil KK are in a high pressure state, and the high pressure oil enters through the first damping 14 and the second damping 15 respectively
  • the hydraulic control ports of the first hydraulic control directional valve 12 and the second hydraulic control directional valve 13, at this time, the first hydraulic control directional valve 12 and the second hydraulic control directional valve 13 are in the state of isolation of the inlet and outlet, Control the multi-way directional valve 3 in the first working position, the high-pressure oil at the outlet of the hydraulic pump 2 passes through the check valve 5, the multi-way directional valve 3 (P to B port), the first electromagnetic directional valve throttle device (this Is in a non-throttle state, which can be understood as normal flow of hydraulic oil without damping), the throttle branch of the third one-way throttle valve 10 and the throttle branch of the fourth one-way throttle valve 11 enter the chisel
  • the low-pressure oil in the rod cavity of the propulsion cylinder 16 passes through the electric second electromagnetic directional valve throttle device (at this time in the unthrottled state, which can be understood as normal flow of hydraulic oil without damping) and the multi-way directional valve 3 (A To the T port) back to the tank.
  • the multi-directional directional valve 3 in the second working position the high-pressure oil at the outlet of the hydraulic pump 2 passes through the safety check valve 5, the multi-directional directional valve 3 (P to A port) and the non-throttled second electromagnetic directional valve
  • the throttle device enters the rod cavity of the propelling cylinder 16 of the rock drilling trolley, and the propelling cylinder 16 retracts.
  • the low-pressure oil in the rodless chamber of the propulsion cylinder 16 passes through the one-way valve branch of the fourth one-way throttle valve 11, the one-way valve branch of the third one-way throttle valve 10, and the first in the unthrottled state Throttle device of electromagnetic directional valve and multiple directional valve 3 (B to T port) return to tank.
  • the set flow rate of the third one-way throttle valve 10 can be made smaller than the set flow rate of the fourth one-way throttle valve 11 to make the hole mode rock drilling
  • the maximum speed of the propulsion cylinder 16 of the trolley is set by the third one-way throttle valve 10
  • the maximum speed of the propulsion cylinder 16 of the rock drilling mode is set by the fourth one-way throttle valve 11.
  • the third one-way throttle valve 10 and the fourth one-way throttle valve 11 are connected in series, but only by the throttle branch of the third one-way throttle valve 10 Due to the setting limitation, during the process of retracting the hole-pushing cylinder 16 of the rock drilling trolley, the speed is not regulated by the throttle due to the one-way valve branch which is a one-way throttle valve.
  • the impact master pilot control oil CJ When the rock drilling trolley is in the rock drilling working mode, the impact master pilot control oil CJ is in a high pressure state, and the open hole low impact pilot control oil KK is in a pressure relief state, and the high pressure oil enters the hydraulic control port of the second hydraulic control directional valve 13,
  • the first hydraulic control directional valve 12 is in a pressure-relief state, and the oil inlet and outlet are in communication.
  • the second hydraulic control directional valve 13 is in a high-pressure state.
  • the oil inlet and outlet are isolated, and the third one-way throttle valve 10 can be bypassed.
  • the multi-way directional valve 3 in the first working position, the high-pressure oil at the outlet of the hydraulic pump 2 passes through the safety check valve 5, the multi-way directional valve 3 (P to B port), and the first electromagnetic directional control in the unthrottled state
  • the throttle branches of the valve throttle device, the first hydraulic control directional valve 12 and the fourth one-way throttle valve 11 enter the rodless cavity of the propulsion cylinder 16 of the rock drilling vehicle, and the propulsion cylinder 16 extends.
  • the low-pressure oil in the rod chamber of the propulsion cylinder 16 returns to the tank through the throttle device of the second electromagnetic directional valve in the unthrottled state and the multi-way directional valve 3 (ports A to T).
  • the multi-way directional valve 3 in the second working position, the high-pressure oil at the outlet of the hydraulic pump 2 passes through the safety check valve 5, the multi-way directional valve 3 (P to A port), and the second electromagnetic directional control in the unthrottled state
  • the valve throttle device enters the rod cavity of the propelling cylinder 16 of the rock drilling trolley, and the propelling cylinder 16 retracts.
  • the low-pressure oil in the rodless chamber of the propulsion cylinder 16 passes through the one-way valve branch of the fourth one-way throttle valve 11, the first hydraulic control directional valve 12, and the first electromagnetic directional valve throttle device in the unthrottled state
  • multi-way valve 3 (B to T port) return to the tank.
  • the extension speed of the rock drilling propelling cylinder 16 is adjusted by the throttling branch of the fourth one-way throttle valve 11.
  • the rock drilling propelling cylinder 16 retracts, it passes through the fourth one-way throttle
  • the speed of the one-way valve branch of valve 11 is not regulated by it.
  • the first electromagnetic directional throttle device includes a first electromagnetic directional valve 6 and a first one-way throttle valve 8, and a second electromagnetic directional throttle device Including the second electromagnetic directional valve 7 and the second one-way throttle valve 9, the two working oil ports of the multi-way directional valve 3 are connected to the oil inlet and outlet of the first electromagnetic directional valve 6 and the second electromagnetic directional valve 7 respectively Port, one working port of the first electromagnetic directional valve 6 is connected to the rodless cavity of the propulsion cylinder 16 through the first one-way throttle valve 8, and the other working port of the first electromagnetic directional valve 6 is directly connected to the propulsion cylinder 16 Rod-less cavity, one working port of the second electromagnetic directional valve 7 is connected to the rod cavity of the propulsion cylinder 16 through the second one-way throttle valve 9, and the other working port of the second electromagnetic directional valve 7 is directly connected The rod cavity of the propulsion cylinder 16.
  • the first electromagnetic directional valve 6 and the second electromagnetic directional valve 7 are specifically two-position three-way electromagnetic directional valves.
  • the propulsion cylinder 16 is directly connected.
  • the propulsion cylinder 16 is communicated through the one-way throttle valve.
  • the first electromagnetic commutation throttle device and the second electromagnetic commutation throttle device are in an unthrottled state, that is, the first electromagnetic commutation valve 6 and the first
  • the two electromagnetic directional valves 7 are in the first working position when the power is lost.
  • the hydraulic oil enters and exits the propulsion cylinder 16 and only flows through the first electromagnetic directional valve 6 and the second electromagnetic directional valve 7 and does not flow through the first one-way throttle.
  • the valve 8 and the second one-way throttle valve 9 can be understood as non-damped flow.
  • the first electromagnetic commutation throttle device and the second electromagnetic commutation throttle device are in the throttle state, that is, the first electromagnetic commutation valve 6 and the second electromagnetic commutation valve 7
  • the power is in the second working position.
  • the hydraulic oil enters the propulsion cylinder 16 it needs to flow through the throttle branch of the electromagnetic directional valve and the one-way throttle valve to control the flow rate.
  • the hydraulic fluid flows out of the propulsion cylinder 16, it needs to pass through the electromagnetic change
  • the one-way valve branch of the one-way valve and one-way throttle valve does not regulate the flow rate.
  • the impact total pilot control oil CJ and the open hole low impact pilot control oil KK are in the pressure relief state
  • the first hydraulic control directional valve 12 and the second hydraulic control directional valve 12 are in the pressure relief state
  • the oil inlet and outlet The communication can bypass the third one-way throttle valve 10 and the fourth one-way throttle valve 11 simultaneously.
  • the high-pressure oil of the hydraulic pump 2 sequentially passes through the throttle branch of the multi-way directional valve 3, the first electromagnetic directional valve 6, the first one-way throttle valve 8, and the second hydraulically-controlled directional valve 13 enters the rodless cavity of the propulsion cylinder 16, the propulsion cylinder 16 extends, and the first one-way throttle valve 8 adjusts the extension speed of the propulsion cylinder 16 when the lever is removed.
  • the high-pressure oil of the hydraulic pump 2 sequentially passes through the throttle branches of the multi-way directional valve 3, the second electromagnetic directional valve 7, and the second one-way throttle valve 9, and enters the rod of the propulsion cylinder 16 Cavity, the propulsion cylinder 16 retracts, and the second one-way throttle valve 9 adjusts the retracting speed of the propulsion cylinder 16 when the lever is removed.
  • the return path of the low-pressure oil is the same, but the one-way valve branch through the one-way throttle valve does not require speed adjustment.
  • the propulsion cylinder 16 When the rock drilling trolley is pushed empty, the first electromagnetic directional valve 6 and the second electromagnetic directional valve 7 are de-energized, and the impact total pilot control oil CJ and the open hole low impact pilot control oil KK are in a pressure relief state.
  • the propulsion cylinder 16 When the propulsion cylinder 16 is extended, the high-pressure oil of the hydraulic pump 2 passes through the multi-way directional valve 3, the first electromagnetic directional valve 6, and the second hydraulic control directional valve 13 directly into the rodless cavity of the propulsion cylinder 16, the propulsion cylinder 16 has The low-pressure oil in the rod cavity passes through the second electromagnetic directional valve 7 and the multi-way directional valve 3 and returns to the oil tank.
  • the propulsion cylinder 16 When the propulsion cylinder 16 is retracted, the high-pressure oil of the hydraulic pump 2 passes through the multi-way directional valve 3 and the second electromagnetic directional valve 7 directly into the propulsion cylinder 16 with a rod cavity.
  • the low-pressure oil in the propulsion cylinder 16 without the rod cavity passes through the second The hydraulic control directional valve 13, the first electromagnetic directional valve 6, and the multi-way directional valve 3 return to the tank. Therefore, when the rock drilling trolley is air-pushed, the propulsion speed is not adjusted by the one-way throttle valve of the system, and the propulsion cylinder 16 has high propulsion and retraction speeds, and the system works efficiently.
  • the propulsion speed of rock drilling mode is divided into working conditions and grades, and the propulsion speed is switched according to different impact conditions.
  • the propulsion speed requirements the general requirements for opening propulsion speed are the lowest, followed by rock drilling propulsion speed, and the air thrust process is generally full speed to improve work efficiency.
  • the maximum speed of hole opening and rock drilling propulsion is set by a one-way throttle valve, and the control pilot oil of the hole opening mode and impact conditions is fed back to the control system, so that different propulsion speed modes are automatically matched.
  • the throttling speed is used to set the advancement speed of the unloading lever to match the rotation speed.
  • a specific embodiment of the present invention also provides a rock drilling trolley including the above propulsion hydraulic control system.
  • a rock drilling trolley including the above propulsion hydraulic control system.
  • the rock drilling trolley may be a medium-deep hole rock drilling trolley.

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

Abstract

L'invention concerne un système de commande hydraulique en avant pour un jumbo de forage, le système comprenant une pompe hydraulique (2), un cylindre d'huile avançant (16), et une soupape d'inversion à voies multiples (3) mise en œuvre pour commander l'inversion du cylindre d'huile avançant ; et comprenant en outre un premier dispositif électromagnétique d'inversion et d'étranglement (6), un second dispositif électromagnétique d'inversion et d'étranglement (7), une première soupape d'inversion à commande hydraulique (12), une deuxième soupape d'inversion à commande hydraulique (13), une troisième soupape d'étranglement anti-retour (10) et une quatrième soupape d'étranglement anti-retour (11). La première soupape d'inversion à commande hydraulique et la deuxième soupape d'inversion à commande hydraulique peuvent commuter une station de travail en fonction de l'état de l'huile de commande pilote, de façon à commander l'entrée de l'huile hydraulique dans une cavité sans tige du cylindre d'huile avançant, ou la sortie dudit huile de ladite cavité, à travers la troisième soupape d'étranglement anti-retour et/ou la quatrième soupape d'étranglement anti-retour. L'invention concerne en outre un jumbo de forage comprenant le système de commande hydraulique en avant. Le système de commande hydraulique en avant réduit les pertes du jumbo de forage, réduit la charge de travail d'un opérateur, ne requiert pas de réglage manuel en temps réel, réduit la difficulté de commande d'accouplement et de désaccouplement d'une tige, améliore la capacité de commande du système, et améliore l'efficacité de construction.
PCT/CN2019/124393 2018-12-10 2019-12-10 Jumbo de forage et système de commande hydraulique en avant associé WO2020119691A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811506268.7 2018-12-10
CN201811506268.7A CN109236765B (zh) 2018-12-10 2018-12-10 凿岩台车及其推进液压控制***

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WO2020119691A1 true WO2020119691A1 (fr) 2020-06-18

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CN112682380A (zh) * 2020-12-29 2021-04-20 徐工集团工程机械股份有限公司科技分公司 一种快换液压***

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CN109236765B (zh) * 2018-12-10 2019-03-26 中国铁建重工集团有限公司 凿岩台车及其推进液压控制***
CN110332163B (zh) * 2019-07-25 2024-04-19 中国铁建重工集团股份有限公司 液压控制***与铲运机
CN110296115B (zh) * 2019-07-31 2024-04-19 中国铁建重工集团股份有限公司 凿岩台车及其钻臂控制液压***
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