CN113494499A - Integrated control valve, automatic rod unloading clamp hydraulic system of rotary drill rig and rod unloading clamp - Google Patents

Integrated control valve, automatic rod unloading clamp hydraulic system of rotary drill rig and rod unloading clamp Download PDF

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Publication number
CN113494499A
CN113494499A CN202110936178.7A CN202110936178A CN113494499A CN 113494499 A CN113494499 A CN 113494499A CN 202110936178 A CN202110936178 A CN 202110936178A CN 113494499 A CN113494499 A CN 113494499A
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China
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port
oil
valve
hydraulic
hydraulic cylinder
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CN202110936178.7A
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CN113494499B (en
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韩家威
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Anbaituo Nanjing Construction Mining Equipment Co ltd
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Anbaituo Nanjing Construction Mining Equipment Co ltd
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Priority to CN202110936178.7A priority Critical patent/CN113494499B/en
Publication of CN113494499A publication Critical patent/CN113494499A/en
Priority to PCT/CN2022/111319 priority patent/WO2023020340A1/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
    • 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
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/18—Connecting or disconnecting drill bit and drilling pipe
    • 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
    • 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

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

Abstract

The invention discloses an integrated control valve, an automatic rod unloading clamp hydraulic system of a rotary drill rig and a rod unloading clamp, and belongs to the technical field of engineering machinery. The integrated control valve comprises a valve body, wherein a first oil inlet, a second oil inlet, a first oil return port, a second oil return port, a first working oil port, a second working oil port, a third working oil port, a fourth working oil port, a fifth working oil port and a sixth working oil port are formed in the valve body; the valve body is provided with a first hydraulic lock, a second hydraulic lock, a sequence valve, a check valve and a throttle valve, and in the embodiment, the valve body is also provided with a first overflow valve and a second overflow valve. Moreover, the structure of the hydraulic system of the rod unloading clamp is provided by utilizing the integrated control valve; meanwhile, based on the proposed hydraulic system, the rod unloading clamp is provided. The hydraulic control of the automatic rod unloading clamp of the rotary drill is realized, and the hydraulic control is stable and reliable, so that the rotary drill can quickly unload the rod.

Description

Integrated control valve, automatic rod unloading clamp hydraulic system of rotary drill rig and rod unloading clamp
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to an automatic rod unloading clamp hydraulic system of an integrated control valve and a rotary drill and a rod unloading clamp.
Background
The rotary drill is applied to the blast hole drilling operation of large-scale strip mines. Different mining areas have different requirements on the drilling depth, the sizes of the drill rods are generally standard, and the length of a single drill rod is certain, so that the drill rod is difficult to adapt to various working conditions. In order to meet the requirements of different drilling depths, the roller-cone drilling machine is generally provided with a rod storage device for storing a plurality of drill rods. During drilling, an operator can sequentially install a plurality of drill rods on the power head according to requirements.
After drilling a hole, the drilling machine moves to the next hole site to continue drilling. Therefore, the drill rod at the upper part needs to be sequentially disassembled, the rod storage device is put back, and then the last drill rod is lifted to the height above the ground from the hole by the power head, so that the drilling machine can be moved. During the drilling process, the threads between the two drill rods are tighter and tighter along with the rotation of the power head. Therefore, when the drill rod is removed, the drill rod may not be smoothly removed by the torque of the power head alone. Accordingly, roller cone drilling rigs are typically equipped with an additional discharge bar clamp to assist in discharging the bar.
The automatic rod-unloading pliers are a structure of a common roller drill, are convenient to operate and save time and labor. Fig. 1 shows an automatic bar discharging clamp of the kind to which the applicant is concerned, which effects the bar discharging operation by means of three hydraulic cylinders, a swing cylinder 300, a clamping cylinder 301 and a rotary cylinder 302. The swing hydraulic cylinder is used for swinging the integral structure of the rod unloading clamp to the position near a drill rod, the clamping hydraulic cylinder is used for clamping the upper drill rod to be unloaded by the clamp mouth, and the rotating hydraulic cylinder is used for outputting rotating torque to unload the drill rod to be unloaded from the top thread of the lower drill rod.
However, for the automatic rod discharging clamp, a stable and reliable hydraulic system is lacked, and hydraulic control of the automatic rod discharging clamp is achieved.
Disclosure of Invention
The technical problem is as follows: the invention provides an integrated control valve aiming at the problem that the existing automatic rod discharging clamp is lack of a stable and reliable hydraulic system, and the integrated control valve is applied to the hydraulic system of the automatic rod discharging clamp to provide the hydraulic system for the automatic rod discharging clamp, so that the stable and reliable hydraulic control of the automatic rod discharging clamp is realized; and further provides an automatic rod unloading clamp, so that the quick rod replacement of the roller bit drill is realized.
The technical scheme is as follows: on one hand, the invention provides an integrated control valve which comprises a valve body, wherein a first oil inlet, a second oil inlet, a first oil return port, a second oil return port, a first working oil port, a second working oil port, a third working oil port, a fourth working oil port, a fifth working oil port and a sixth working oil port are arranged on the valve body;
a first hydraulic lock and a second hydraulic lock are arranged in the valve body, a V1 port of the first hydraulic lock is connected with the first oil inlet, a V2 port is connected with the first oil return port, a C1 port is connected with the first working oil port, and a C2 port is connected with the second working oil port;
a V1 port of the second hydraulic lock is connected with the second oil inlet, a V2 port is connected with the second oil return port, a C1 port is respectively connected with the third working oil port and the fifth working oil port, and a C2 port is respectively connected with the fourth working oil port and the sixth working oil port;
a sequence valve and a one-way valve are arranged on an oil path from the port C1 of the second hydraulic lock to the port sixth working oil, and the one-way valve is connected with the sequence valve in parallel;
and a throttle valve is arranged on an oil path from the port C2 of the first hydraulic lock to the second working oil port.
When the integrated control valve is applied to a hydraulic system of automatic rod unloading pliers of the existing rotary drill, stable and reliable hydraulic control of the automatic rod unloading pliers can be realized. When the integrated control valve is used, when the swing hydraulic cylinder extends to a proper position during working, the first hydraulic lock is used for locking the swing hydraulic cylinder, so that the swing position of the automatic rod unloading clamp is kept unmoved, and the phenomenon that the rod unloading clamp moves after swinging to the rod unloading position to cause that a clamping oil cylinder cannot clamp a drill rod and the rod unloading fails is prevented; and the automatic rod removing clamp can be prevented from freely swinging when not in work, so that safety accidents are caused. Similarly, the second hydraulic lock can move the positions of the two hydraulic cylinders after the clamping hydraulic cylinder and the rotating hydraulic cylinder extend in place, so that the hydraulic cylinders are prevented from moving freely, and personnel are prevented from being injured. And the sequential actions of the clamping hydraulic cylinder and the rotating hydraulic cylinder when the clamping hydraulic cylinder and the rotating hydraulic cylinder extend are realized through the sequence valve. The resistance of the swing hydraulic cylinder during stretching can be increased by utilizing the throttle valve, and the phenomenon that the automatic rod unloading clamp shakes due to too high speed in the swing process is avoided. Therefore, the stability and reliability of the hydraulic system of the automatic rod unloading clamp are ensured.
Furthermore, a first overflow valve is further arranged in the valve body, an inlet of the first overflow valve is connected with the first oil inlet, and an outlet of the first overflow valve is connected with the first oil return port. The maximum output force of the swing hydraulic cylinder is limited through the first overflow valve so as to prevent the swing hydraulic cylinder and structural members of the automatic rod discharging clamp from being damaged.
Furthermore, a second overflow valve is further arranged in the valve body, an inlet of the second overflow valve is connected with the second oil inlet, and an outlet of the second overflow valve is connected with the second oil return port. And the second overflow valve is used for draining oil to limit the maximum output force of the clamping hydraulic cylinder and the rotating hydraulic cylinder so as to prevent damage to the clamping hydraulic cylinder, the rotating hydraulic cylinder and the structural member of the automatic rod discharging clamp.
Further, the oil drain port of the sequence valve is connected with the port C2 of the second hydraulic lock.
Furthermore, a third oil return port is further arranged on the valve body, and an oil drainage port of the sequence valve is connected with the third oil return port.
By the two modes, oil drainage of the sequence valve is realized.
In another aspect, the present invention further provides a hydraulic system for an automatic rod removing clamp of a roller cone drill, including: a first directional control valve, a second directional control valve, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a control handle, the integrated control valve of any one of claims 1-5, a pressure oil source, and an oil tank;
a port P of the first reversing valve is connected with a pressure oil source, a port T is connected with an oil tank, a port A is connected with a first oil inlet of the integrated control valve, a port B is connected with a first oil return port, a right electromagnet B of the first reversing valve is connected with an upper control position of the control handle, and a left electromagnet a of the first reversing valve is connected with a lower control position of the control handle;
a port P of the second reversing valve is connected with a pressure oil source, a port T is connected with an oil tank, a port A is connected with a second oil inlet of the integrated control valve, a port B is connected with a second oil return port, a right electromagnet B of the second reversing valve is connected with a right control position of the control handle, and a left electromagnet a of the second reversing valve is connected with a left control position of the control handle;
a rod cavity of the first hydraulic cylinder is connected with a first working oil port of the integrated control valve, and a rodless cavity of the first hydraulic cylinder is connected with a second working oil port; a rod cavity of the second hydraulic cylinder is connected with a third working oil port of the integrated control valve, and a rodless cavity of the second hydraulic cylinder is connected with a fourth working oil port; and a rod cavity of the third hydraulic cylinder is connected with a fifth working oil port of the integrated control valve, and a rodless cavity of the third hydraulic cylinder is connected with a sixth working oil port.
This hydraulic system utilizes a control handle to control, has realized the reliable and stable hydraulic control to current automatic rod unloading pincers to let the rotary drill realize unloading the pole fast, all pass through hydraulic control moreover, less operating personnel's danger. The efficiency of unloading the pole is improved, the pole danger of unloading has been reduced, labour saving and time saving.
Furthermore, the first reversing valve and the second reversing valve are three-position four-way Y-shaped proportional directional valves, so that the movement speed of the rod unloading clamp can be freely adjusted according to requirements, and the rod unloading clamp is more stable and safe and reduces impact.
Further, when the hydraulic system is used for driving the rod unloading pliers to unload rods:
the control handle is operated upwards, the electromagnet b on the right side of the first reversing valve is electrified, the port P is communicated with the port A, hydraulic oil enters a rodless cavity of the first hydraulic cylinder through the first hydraulic lock, and the first hydraulic cylinder extends out to enable the automatic rod unloading clamp to swing to the position near a drill rod to be unloaded;
the left electromagnet a of the control handle is operated downwards to be electrified, the port P is communicated with the port B, hydraulic oil enters a rod cavity of the first hydraulic cylinder through the first hydraulic lock, and the first hydraulic cylinder retracts to enable the automatic rod unloading clamp to swing to a non-working position;
the control handle is operated rightwards, the right electromagnet b of the second reversing valve is electrified, the port P is communicated with the port A, hydraulic oil enters a rodless cavity of a second hydraulic cylinder through a second hydraulic lock, and the second hydraulic cylinder extends out; continuing to feed hydraulic oil, further increasing the pressure of the hydraulic oil from a second oil inlet of the integrated control valve to a third working oil port, opening the sequence valve, feeding the hydraulic oil into a rodless cavity of the third hydraulic cylinder, and pushing the third hydraulic cylinder to extend out, so that the rotary tong nozzle unloads the drill rod to be unloaded;
and the control handle is operated leftwards, the left electromagnet a of the second reversing valve is electrified, the port P and the port B are communicated, hydraulic oil respectively enters rod cavities of the second hydraulic cylinder and the third hydraulic cylinder through the second hydraulic lock, and the two hydraulic cylinders retract simultaneously to drive the tong nozzle to leave the unloaded drill rod.
By the mode, the quick rod unloading of the rotary drill is realized, and the rotary drill is high in efficiency, low in danger, time-saving and labor-saving.
Meanwhile, the invention also provides automatic rod unloading pliers of the roller bit drilling machine, which utilize the hydraulic system provided in the embodiment to carry out hydraulic control. The quick rod unloading of the roller drill is realized by utilizing the rod unloading clamp.
Compared with the prior art, the invention provides a new hydraulic system and a corresponding integrated control valve for the existing automatic rod discharging clamp, and realizes stable and reliable hydraulic control of the automatic rod discharging clamp, so that the roller drill can quickly discharge rods, the rod discharging efficiency is improved, the rod discharging danger is reduced, and time and labor are saved.
Drawings
FIG. 1 is a schematic structural diagram of an automatic bar discharging clamp according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an integrated control valve in an embodiment of the present invention;
FIG. 3 is a schematic diagram of another integrated control valve in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a hydraulic system for an automatic rodding clamp according to an embodiment of the present invention.
The figure shows that: 100. a valve body; 101. a first oil inlet; 102. a second oil inlet; 103. a first oil return port; 104. a second oil return port; 105. a first working oil port; 106. a second working oil port; 107. a third working oil port; 108. a fourth working oil port; 109. a fifth working oil port; 110. a sixth working oil port; 111. a first hydraulic lock; 112. a second hydraulic lock; 113. a sequence valve; 114. a one-way valve; 115. a throttle valve; 116. a first overflow valve; 117. a second overflow valve; 118. a third oil return port;
200. a first direction changing valve; 201. a second directional control valve; 202. a source of pressurized oil; 203. an oil tank; 204. a control handle 204; 205. a first hydraulic cylinder; 206. a second hydraulic cylinder; 207. a third hydraulic cylinder; 208. an upper control bit; 209. a lower control bit; 210. a left control bit; 211. a right control bit;
300. a swing hydraulic cylinder; 301. clamping a hydraulic cylinder; 302. the hydraulic cylinder is rotated.
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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Also, the terms "first", "second", etc. are used for convenience of description only and are not to be construed as limiting the number, etc.
FIG. 2 illustrates a schematic diagram of an integrated control valve in one embodiment of the present invention. Referring to fig. 2, in an embodiment of the present invention, the integrated control valve includes a valve body 100, and the valve body 100 is provided with a first oil inlet 101, a second oil inlet 102, a first oil return port 103, a second oil return port 104, a first working oil port 105, a second working oil port 106, a third working oil port 107, a fourth working oil port 108, a fifth working oil port 109, and a sixth working oil port 110. The valve body 100 is provided with a first hydraulic lock 111 and a second hydraulic lock 112, a V1 port of the first hydraulic lock 111 is connected with the first oil inlet 101, a V2 port is connected with the first oil return port 103, a C1 port is connected with the first working oil port 105, and a C2 port is connected with the second working oil port 106. A V1 port of the second hydraulic lock 112 is connected with the second oil inlet 102, a V2 port is connected with the second oil return port 104, a C1 port is connected with the third working oil port 107 and the fifth working oil port 109, and a C2 port is connected with the fourth working oil port 108 and the sixth working oil port 110. A sequence valve 113 and a check valve 114 are arranged on an oil path from the C1 port of the second hydraulic lock 112 to the sixth working oil port 110, and the check valve 114 is connected with the sequence valve 113 in parallel; more specifically, the inlet of the check valve 114 is connected to the sixth working oil port 110, and the outlet is connected to the port C1 of the second hydraulic lock 112. A throttle valve 115 is provided in an oil path from the port C2 of the first hydraulic lock 111 to the second working fluid port 106.
The working principle of the provided integrated control valve is as follows:
when the integrated control valve is applied to a hydraulic system of automatic rod discharging tongs of a rotary drill rig, a first working oil port 105 is connected with a rodless cavity of a swing hydraulic cylinder, and a second working oil port 106 is connected with a rod cavity of the swing hydraulic cylinder; a third working oil port 107 is connected with a rodless cavity of the clamping hydraulic cylinder, and a fourth working oil port 108 is connected with a rod cavity of the clamping hydraulic cylinder; the fifth working oil port 109 is connected to a rodless chamber of the rotary hydraulic cylinder, and the sixth working oil port 110 is connected to a rod chamber of the rotary hydraulic cylinder.
The first oil inlet 101 can be connected with a pressure oil source through a reversing valve, and the first oil return port 103 can be connected with an oil tank through the reversing valve; the second oil inlet 102 may be connected to a pressure oil source via a directional valve, and the second oil return 104 may be connected to a tank via a directional valve. When the automatic rod unloading clamp works, hydraulic oil entering from a first oil inlet 101 enters a rodless cavity of the swing hydraulic cylinder through the first hydraulic lock 111, the swing hydraulic cylinder extends out, and the automatic rod unloading clamp can swing to a position near a drill rod to be unloaded; when hydraulic oil is introduced from the first oil return port 103, the hydraulic oil enters the rod cavity of the swing hydraulic cylinder through the first hydraulic lock 111, and the swing hydraulic cylinder retracts to enable the automatic rod discharging clamp to swing to a non-working position.
When hydraulic oil is introduced from the second oil inlet 102, the hydraulic oil enters the rodless cavity of the clamping hydraulic cylinder through the second hydraulic lock 112, the clamping hydraulic cylinder is pushed to extend out, and the jaw of the rod unloading clamp is pushed to clamp a drill rod to be unloaded; then the pressure of the hydraulic oil in the oil path from the second oil inlet 102 to the sixth working oil port 110 is further increased, because the inlet of the check valve 114 is connected with the sixth working oil port 110, and the outlet is connected with the port C1 of the second hydraulic lock 112, the hydraulic oil cannot pass through the check valve 114, so that the sequence valve 113 is opened, the hydraulic oil enters the rodless cavity of the rotary hydraulic cylinder, the rotary hydraulic cylinder is pushed to extend, and the jaw of the rotary rod removing clamp removes the drill rod to be removed.
When hydraulic oil is introduced from the second oil return port 104, the hydraulic oil enters the rod cavities of the clamping hydraulic cylinder and the rotating hydraulic cylinder through the second hydraulic lock 112, and the clamping hydraulic cylinder and the rotating hydraulic cylinder retract simultaneously to drive the tong nozzle to leave the unloaded drill rod. In the integrated control valve, the first hydraulic lock is used for locking the swing hydraulic cylinder, so as to keep the swing position of the automatic bar discharging clamp not moving, and the functions of the first hydraulic lock are two: 1) the rod unloading clamp is prevented from moving after swinging to the rod unloading position, so that the clamping oil cylinder cannot clamp a drill rod, and the rod unloading fails; 2) the automatic rod unloading clamp is prevented from freely swinging when not in work, so that safety accidents are prevented.
Similarly, the second hydraulic lock 112 is arranged, so that the positions of the two hydraulic cylinders can be moved after the clamping hydraulic cylinder and the rotating hydraulic cylinder extend to the right position, and the hydraulic cylinders are prevented from moving freely, so that personnel can be injured.
At the same time, the sequential actions of the clamping hydraulic cylinder and the rotating hydraulic cylinder when extending are realized through the sequence valve 113. In the embodiment of the invention, the throttle valve 115 can increase the resistance of the swing hydraulic cylinder during extension and retraction, and avoid the over-high speed and shaking of the automatic rod unloading clamp during the swing process.
Through the integrated control valve, when the integrated control valve is applied to a hydraulic system of the automatic rod unloading clamp, the working purpose of the rod unloading clamp is realized, and simultaneously, the integrated control valve is relatively stable and reliable.
Further, in the embodiment of the present invention, the valve body 100 is further provided with a first overflow valve 116, an inlet of the first overflow valve 116 is connected to the first oil inlet 101, and an outlet of the first overflow valve 116 is connected to the first oil return port 103. Through setting up first overflow valve 116, when the oil circuit of swing hydraulic cylinder, pressure exceeded first overflow valve 116 rated pressure, carried out the draining through first overflow valve 116 to the maximum output power of restriction swing hydraulic cylinder prevents to cause the injury to swing hydraulic cylinder self and automatic release lever pincers's structure.
Further, a second relief valve 117 is further disposed in the valve body 100, an inlet of the second relief valve (117) is connected with the second oil inlet 102, and an outlet of the second relief valve (117) is connected with the second oil return port 104. Similarly, by arranging the second overflow valve 117, when the pressure in the oil paths of the clamping hydraulic cylinder and the rotating hydraulic cylinder exceeds the rated pressure of the second overflow valve 117, oil is drained through the second overflow valve 117, so that the maximum output force of the clamping hydraulic cylinder and the rotating hydraulic cylinder is limited, and the clamping hydraulic cylinder, the rotating hydraulic cylinder and the structural member of the automatic rod discharging clamp are prevented from being damaged.
In one embodiment of the present invention, the drain port of the sequence valve 113 is connected to port C2 of the second hydraulic lock 112. At this time, the sequence valve 113 may drain oil directly to the tank through the second hydraulic lock 112, and in this form, piping connection may be reduced, resulting in a simplified structure.
In addition, in another embodiment of the present invention, as shown in fig. 3, a third oil return port 118 may be provided on the valve body 100, and the drain port of the sequence valve 113 is connected to the third oil return port 118. At this time, the third oil return port 118 may be directly connected to the tank, and then the drain oil of the sequence valve 113 directly enters the tank.
Based on the integrated control valve provided by the embodiment of the invention, the hydraulic system of the automatic rod unloading clamp of the roller bit drilling machine is provided. As shown in fig. 4, the hydraulic system includes: the hydraulic control system comprises a first reversing valve 200, a second reversing valve 201, a first hydraulic cylinder 205, a second hydraulic cylinder 206, a third hydraulic cylinder 207, a control handle 204, an integrated control valve, a pressure oil source 202 and an oil tank 203;
the port P of the first reversing valve 200 is connected with a pressure oil source 202, the port T is connected with an oil tank 203, the port A is connected with a first oil inlet 101 of the integrated control valve, the port B is connected with a first oil return port 103, an electromagnet B of the first reversing valve 200 is connected with an upper control position 208 of a control handle 204, and an electromagnet a of the first reversing valve 200 is connected with a lower control position 209 of the control handle 204.
The port P of the second reversing valve 201 is connected with a pressure oil source 202, the port T is connected with an oil tank 203, the port A is connected with a second oil inlet 102 of the integrated control valve, the port B is connected with a second oil return port 104, an electromagnet B of the second reversing valve 201 is connected with a right control position 211 of a control handle 204, and an electromagnet a of the second reversing valve 201 is connected with a left control position 210 of the control handle 204.
A rod cavity of the first hydraulic cylinder 205 is connected with the first working oil port 105 of the integrated control valve, and a rodless cavity is connected with the second working oil port 106; a rod cavity of the second hydraulic cylinder 206 is connected with the third working oil port 107 of the integrated control valve, and a rodless cavity is connected with the fourth working oil port 108; the rod chamber of the third hydraulic cylinder 207 is connected with the fifth working port 109 of the integrated control valve, and the rodless chamber is connected with the sixth working port 110.
In this embodiment, the first hydraulic cylinder 205 is a swing hydraulic cylinder of the bar clamp, the second hydraulic cylinder 206 is a clamping hydraulic cylinder, and the third hydraulic cylinder 207 is a rotation hydraulic cylinder.
This hydraulic system utilizes a control handle 204 to control, has realized the reliable and stable hydraulic control to current automatic rod discharging pincers to let the rotary drill realize unloading the pole fast, all pass through hydraulic control moreover, less operating personnel's danger. The efficiency of unloading the pole is improved, the pole danger of unloading has been reduced, labour saving and time saving.
In the preferred embodiment of the invention, the first reversing valve 200 and the second reversing valve 201 are three-position four-way Y-shaped proportional direction valves, so that the movement speed of the rod discharging clamp can be freely adjusted according to requirements, and the rod discharging clamp can be more stable and safer during reversing and reduce impact. Meanwhile, for the three-position four-way Y-shaped proportional reversing valve, when the reversing valve does not act, the port A and the port B are communicated with the port T, so that when the hydraulic cylinder is locked by the corresponding hydraulic lock, hydraulic oil on the oil inlet side (the port V1 and the port V2) of the hydraulic lock cannot influence the hydraulic lock, the hydraulic lock is more stable and reliable when the hydraulic cylinder is locked by the hydraulic lock, and the reliability of a hydraulic system is further improved.
The following is a description of a hydraulic system control process provided in an embodiment using the present invention.
When the control handle 204 is operated upwards, the right electromagnet b of the first reversing valve 200 is electrified, at the moment, the first reversing valve 200 works at the right working position, the port P and the port A are communicated, hydraulic oil enters a rodless cavity of the first hydraulic cylinder 205 through the first hydraulic lock 111, and the first hydraulic cylinder 205 extends out, so that the automatic rod unloading clamp swings to the position near a drill rod to be unloaded.
When the control handle 204 is operated downwards, the left electromagnet a of the first reversing valve 200 is electrified, at this time, the first reversing valve 200 works at the left working position, the port P and the port B are conducted, hydraulic oil enters the rod cavity of the first hydraulic cylinder 205 through the first hydraulic lock 111, and the first hydraulic cylinder 205 retracts, so that the automatic bar discharging clamp swings to the non-working position.
When the control handle 204 is operated rightwards, the right electromagnet b of the second reversing valve 201 is electrified, at the moment, the second reversing valve 201 works at a right working position, the port P is communicated with the port A, hydraulic oil enters a rodless cavity of the second hydraulic cylinder 206 through the second hydraulic lock 112, and the second hydraulic cylinder 206 extends out; and (3) continuing to feed hydraulic oil, further increasing the pressure of the hydraulic oil from the second oil inlet 102 to the third working oil port 107 of the integrated control valve, opening the sequence valve 113, enabling the hydraulic oil to enter a rodless cavity of the third hydraulic cylinder 207, pushing the third hydraulic cylinder 207 to extend out, and enabling the rotary tong nozzle to unload the drill rod to be unloaded.
When the control handle 204 is operated leftwards, the left electromagnet a of the second reversing valve 201 is electrified, at this time, the second reversing valve 201 works at a left working position, the port P and the port B are conducted, hydraulic oil enters rod cavities of the second hydraulic cylinder 206 and the third hydraulic cylinder 207 through the second hydraulic lock 112 respectively, and the two hydraulic cylinders retract simultaneously to drive the tong nozzle to leave a unloaded drill rod.
By the mode, the quick rod unloading of the rotary drill is realized, and the rotary drill is high in efficiency, low in danger, time-saving and labor-saving.
The hydraulic system of the automatic rod discharging clamp not only meets the hydraulic control requirement of the automatic rod discharging clamp, but also is more stable and reliable and has high integration degree due to the utilization of the proposed integrated control valve, and is more convenient to operate due to the utilization of one control handle 204.
Further, in the embodiment of the invention, the invention also provides a rod unloading clamp of the roller bit drill, in particular to an automatic rod unloading clamp, which utilizes the proposed hydraulic system, is stable and reliable during rod unloading operation, and enables the roller bit drill to unload rods quickly.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (9)

1. An integrated control valve comprises a valve body (100), and is characterized in that a first oil inlet (101), a second oil inlet (102), a first oil return port (103), a second oil return port (104), a first working oil port (105), a second working oil port (106), a third working oil port (107), a fourth working oil port (108), a fifth working oil port (109) and a sixth working oil port (110) are arranged on the valve body (100);
a first hydraulic lock (111) and a second hydraulic lock (112) are arranged in the valve body (100), a V1 port of the first hydraulic lock (111) is connected with a first oil inlet (101), a V2 port is connected with a first oil return port (103), a C1 port is connected with a first working oil port (105), and a C2 port is connected with a second working oil port (106);
a V1 port of the second hydraulic lock (112) is connected with a second oil inlet (102), a V2 port is connected with a second oil return port (104), a C1 port is respectively connected with a third working oil port (107) and a fifth working oil port (109), and a C2 port is respectively connected with a fourth working oil port (108) and a sixth working oil port (110);
a sequence valve (113) and a one-way valve (114) are arranged on an oil path from a C1 port of the second hydraulic lock (112) to a sixth working oil port (110), and the one-way valve (114) is connected with the sequence valve (113) in parallel;
and a throttle valve (115) is arranged on an oil path from the C2 port of the first hydraulic lock (111) to the second working oil port (106).
2. The integrated control valve according to claim 1, wherein a first overflow valve (116) is further disposed in the valve body (100), an inlet of the first overflow valve (116) is connected to the first oil inlet (101), and an outlet of the first overflow valve is connected to the first oil return port (103).
3. The integrated control valve according to claim 2, wherein a second overflow valve (117) is further disposed in the valve body (100), an inlet of the second overflow valve (117) is connected to the second oil inlet (102), and an outlet of the second overflow valve is connected to the second oil return port (104).
4. An integrated control valve according to any of claims 1-3, characterized in that the drain port of the sequence valve (113) is connected with port C2 of the second hydraulic lock (112).
5. The integrated control valve according to any one of claims 1 to 3, characterized in that a third oil return port (118) is further arranged on the valve body (100), and the oil drain port of the sequence valve (113) is connected with the third oil return port (118).
6. An automatic rod unloading clamp hydraulic system of a roller bit drill is characterized by comprising: -a first directional control valve (200), -a second directional control valve (201), -a first hydraulic cylinder (205), -a second hydraulic cylinder (206), -a third hydraulic cylinder (207), -a control handle (204), -an integrated control valve according to any of claims 1-5, -a pressure oil source (202), -a tank (203);
a P port of the first reversing valve (200) is connected with a pressure oil source (202), a T port is connected with an oil tank (203), an A port is connected with a first oil inlet (101) of the integrated control valve, a B port is connected with a first oil return port (103), a right electromagnet B of the first reversing valve (200) is connected with an upper control position (208) of a control handle (204), and a left electromagnet a of the first reversing valve (200) is connected with a lower control position (209) of the control handle (204);
a port P of a second reversing valve (201) is connected with a pressure oil source (202), a port T is connected with an oil tank (203), a port A is connected with a second oil inlet (102) of the integrated control valve, a port B is connected with a second oil return port (104), a right electromagnet B of the second reversing valve (201) is connected with a right control position (211) of a control handle (204), and a left electromagnet a of the second reversing valve (201) is connected with a left control position (210) of the control handle (204);
a rod cavity of the first hydraulic cylinder (205) is connected with a first working oil port (105) of the integrated control valve, and a rodless cavity is connected with a second working oil port (106); a rod cavity of the second hydraulic cylinder (206) is connected with a third working oil port (107) of the integrated control valve, and a rodless cavity is connected with a fourth working oil port (108); and a rod cavity of the third hydraulic cylinder (207) is connected with a fifth working oil port (109) of the integrated control valve, and a rodless cavity is connected with a sixth working oil port (110).
7. The hydraulic system of claim 6, wherein the first and second directional valves (200, 201) are each three-position, four-way, Y-type proportional directional valves.
8. The hydraulic system according to claim 6 or 7, wherein when the hydraulic system is used for driving a rod discharging clamp to discharge rods:
the control handle 204 is operated upwards, the electromagnet b on the right side of the first reversing valve (200) is electrified, the port P is communicated with the port A, hydraulic oil enters a rodless cavity of the first hydraulic cylinder (205) through the first hydraulic lock (111), and the first hydraulic cylinder (205) extends out, so that the automatic rod unloading clamp swings to the position near a drill rod to be unloaded;
a control handle (204) is operated downwards, an electromagnet a on the left side of the first reversing valve (200) is electrified, a port P is communicated with a port B, hydraulic oil enters a rod cavity of a first hydraulic cylinder (205) through a first hydraulic lock (111), and the first hydraulic cylinder (205) retracts to enable the automatic rod discharging clamp to swing to a non-working position;
a control handle (204) is operated rightwards, an electromagnet b on the right side of the second reversing valve (201) is electrified, a port P is communicated with a port A, hydraulic oil enters a rodless cavity of a second hydraulic cylinder (206) through a second hydraulic lock (112), and the second hydraulic cylinder (206) extends out; continuing to feed hydraulic oil, further increasing the pressure of the hydraulic oil from a second oil inlet (102) to a third working oil port (107) of the integrated control valve, opening the sequence valve (113), enabling the hydraulic oil to enter a rodless cavity of a third hydraulic cylinder (207), pushing the third hydraulic cylinder (207) to extend out, and enabling the rotary tong nozzle to unload the drill rod to be unloaded;
the control handle (204) is operated leftwards, the left electromagnet a of the second reversing valve (201) is electrified, the port P and the port B are conducted, hydraulic oil enters rod cavities of the second hydraulic cylinder (206) and the third hydraulic cylinder (207) through the second hydraulic lock (112) respectively, and the two hydraulic cylinders retract simultaneously to drive the tong nozzle to leave a unloaded drill rod.
9. A rod unloading clamp of a roller cone drill, which is characterized in that the hydraulic system of any one of claims 6-8 is used for hydraulic control.
CN202110936178.7A 2021-08-16 2021-08-16 Integrated control valve, automatic rod-unloading clamp hydraulic system of rotary drill and rod-unloading clamp Active CN113494499B (en)

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CN202110936178.7A CN113494499B (en) 2021-08-16 2021-08-16 Integrated control valve, automatic rod-unloading clamp hydraulic system of rotary drill and rod-unloading clamp
PCT/CN2022/111319 WO2023020340A1 (en) 2021-08-16 2022-08-10 Integrated control valve, automatic rod-unloading-tong hydraulic system of rotary drilling rig, and rod-unloading tong

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