CN216278716U - Quick pressurizing and pulling hydraulic control system for power head of rotary drilling rig - Google Patents
Quick pressurizing and pulling hydraulic control system for power head of rotary drilling rig Download PDFInfo
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- CN216278716U CN216278716U CN202123057954.0U CN202123057954U CN216278716U CN 216278716 U CN216278716 U CN 216278716U CN 202123057954 U CN202123057954 U CN 202123057954U CN 216278716 U CN216278716 U CN 216278716U
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Abstract
The utility model discloses a quick pressurizing and pulling hydraulic control system for a power head of a rotary drilling rig, which comprises a first hydraulic pump, a first multi-way directional valve and a first motor which are communicated through a pipeline, and a second hydraulic pump, a second multi-way directional valve and a second motor which are communicated through a pipeline, wherein a pilot oil port a1 of the first multi-way directional valve is communicated with a pilot oil port a2 of the second multi-way directional valve through a first pilot oil path X1, and a pilot oil port b1 of the first multi-way directional valve is communicated with a pilot oil port b2 of the second multi-way directional valve through a second pilot oil path X2; a first solenoid valve is provided in the first pilot oil passage X1, a second solenoid valve is provided in the second pilot oil passage X2, and a switching valve is provided between the second multi-way selector valve and the second motor. The power head rapid pressurizing and pulling hydraulic control system increases the input flow of hydraulic oil of the pressurizing loop, improves the working efficiency of the pressurizing loop and accelerates the pressurizing and pulling speed of the power head.
Description
Technical Field
The utility model relates to the technical field of rotary drilling rigs, in particular to a quick pressurizing and pulling hydraulic control system for a power head of a rotary drilling rig.
Background
The rotary drilling rig is a hole forming machine for foundation engineering cast-in-place pile construction, and is widely applied to foundation engineering construction of roads, bridges, wharfs and the like due to the characteristics of high efficiency, less pollution, multiple functions and the like.
The hydraulic system of the rotary drilling rig is formed by combining an energy device (a hydraulic pump), an executing device (a hydraulic cylinder and a hydraulic motor), a control adjusting device (hydraulic valves for various control fluid flow and directions), an auxiliary device (an oil tank, a filter, an energy accumulator and the like) and a hydraulic pipeline for a transmission medium according to a certain mode, and the mechanical energy of an engine is converted into hydraulic energy easy to transmit by taking hydraulic oil as a medium to realize various actions, wherein the main actions are as follows: track expanding and walking, mast adjusting, drilling process, lifting process and unloading. Hydraulic systems can be divided into: the device comprises a pump control loop, a power head rotary loop, a pressurizing loop, a main hoisting loop, an auxiliary hoisting loop, an amplitude variable loop, a boarding rotary loop and a walking loop. Wherein, the pressurization return circuit of unit head main function has: after the pile driving hole is positioned, lowering the power head to enable the drill bucket to reach the foundation surface; downward pressure is provided in the rotary drilling process of the power head to ensure effective pile drilling; the lifting device is matched with the main winch in the lifting process, so that the drilling bucket is lifted to a high water level to facilitate soil unloading.
In the prior art, a hydraulic control circuit for pressurizing and pulling actions of a power head pressurizing circuit is shown in a figure 1: when the power head needs pressurization and pulling actions, pilot control oil is operated to enter the port a or the port b of the first multi-way reversing valve 02 so as to control the reversing of the first multi-way reversing valve 02. When pilot control oil enters the port a of the first multi-way directional valve 02, the first multi-way directional valve 02 is reversed, hydraulic oil in the first hydraulic pump 03 enters the port A of the first motor 01, hydraulic oil from the port B of the first motor 01 returns to an oil tank through the first multi-way directional valve 02, lowering is completed, and downward pressure is provided in the power head drilling process.
When the pilot control oil enters the port B of the first multi-way directional valve 02, the first multi-way directional valve 02 is reversed, the hydraulic oil in the first hydraulic pump 03 enters the port B of the first motor 01, and the hydraulic oil from the port B of the first motor 01 returns to the oil tank through the first multi-way directional valve 02 to complete the lifting action.
The hydraulic control circuit for the pressurization and the lifting action of the auxiliary hoisting circuit is shown in figure 2: when the auxiliary winch needs to perform lifting and lowering actions, the pilot control oil is operated to enter the aL2 or bL2 port of the second multi-way directional control valve 05. When pilot control oil enters an aL2 port of the second multi-way reversing valve 05, the second multi-way reversing valve 05 reverses, hydraulic oil in the second hydraulic pump 06 enters an A port of the second motor 04, and hydraulic oil from a B port of the second motor 04 returns to an oil tank through the second multi-way reversing valve 05, so that the lowering action is completed. When the pilot control oil enters the port bL2 of the second multi-way directional valve 05, the second multi-way directional valve 05 is reversed, the hydraulic oil in the second hydraulic pump 06 enters the port B of the second motor 04, and the hydraulic oil from the port a of the second motor 04 returns to the oil tank through the second multi-way directional valve 05, so that the lifting action is completed.
From the above analysis, the auxiliary hoisting loop and the power head pressurizing loop of the hydraulic system of the conventional rotary drilling rig are independent hydraulic control loops, and the auxiliary hoisting loop and the power head pressurizing loop are not crossed. The first motor 01 for pressurizing and pulling up the pressurizing loop of the power head is controlled by a first multi-way reversing valve 02 one-piece valve, and the flow of the single-piece valve is small, so that the speed requirements of quick pressurizing and pulling up of the power head cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a quick pressurizing and pulling hydraulic control system for a power head of a rotary drilling rig, which increases the input flow of hydraulic oil of a pressurizing loop, improves the working efficiency of the pressurizing loop, and accelerates the pressurizing and pulling speed of the power head.
In order to achieve the purpose, the utility model provides the following technical scheme:
a rotary drilling rig power head rapid pressurization and hydraulic control system for pulling comprises a first hydraulic pump, a first multi-way directional valve and a first motor which are communicated through a pipeline, and a second hydraulic pump, a second multi-way directional valve and a second motor which are communicated through the pipeline, wherein a pilot oil port a1 of the first multi-way directional valve is communicated with a pilot oil port a2 of the second multi-way directional valve through a first pilot oil path X1, and a pilot oil port b1 of the first multi-way directional valve is communicated with a pilot oil port b2 of the second multi-way directional valve through a second pilot oil path X2;
a first solenoid valve is disposed on the first pilot oil path X1, a second solenoid valve is disposed on the second pilot oil path X2, a switching valve is disposed between the second multi-way directional control valve and the second motor, when the switching valve is switched to the first position, an oil port of the switching valve is communicated with the first motor through a pipeline, and when the switching valve is switched to the second position, the oil port of the switching valve is communicated with the second motor through a pipeline.
Optionally, the switching valve includes a first pilot-controlled directional branch valve, a second pilot-controlled directional branch valve, and a third solenoid valve, the third solenoid valve is configured to control a third pilot oil path X3, and the third pilot oil path X3 is in communication with the pilot oil port a3 of the first pilot-controlled directional branch valve and the pilot oil port a4 of the second pilot-controlled directional branch valve.
Optionally, the port P3 of the first pilot-controlled directional control branch valve is communicated with the port a2 of the second multi-way directional control valve, the port P4 of the second pilot-controlled directional control branch valve is communicated with the port B2 of the second multi-way directional control valve, and the port T3 of the first pilot-controlled directional control branch valve and the port T4 of the second pilot-controlled directional control branch valve are both communicated with a fuel tank.
Optionally, the port A3 of the first hydraulic control directional control branch valve is communicated with the connecting pipeline of the port A1 of the first multi-way reversing valve, and the port A4 of the second hydraulic control directional control branch valve is communicated with the connecting pipeline of the port B1 of the first multi-way reversing valve; the port B3 of the first hydraulic control directional control branch valve is communicated with the port A of the second motor, and the port B4 of the second hydraulic control directional control branch valve is communicated with the port B of the second motor.
Optionally, when the third electromagnetic valve is powered on, the switching valve is switched to the first position, the second hydraulic pump provides hydraulic oil for the first motor, and the second hydraulic pump and the first hydraulic pump provide hydraulic oil for the pressurizing loop at the same time; when the third electromagnetic valve is powered off, the switching valve returns to the second position, the second hydraulic pump provides hydraulic oil for the second motor, and the second hydraulic pump provides hydraulic oil for the auxiliary hoisting loop.
Optionally, the system further comprises an auxiliary hoisting pilot oil lifting path X4 and an auxiliary hoisting pilot oil lowering path X5; the auxiliary hoisting pilot oil lifting path X4 is communicated with a second multi-way reversing valve through a first electromagnetic valve, and the auxiliary hoisting pilot oil lowering path X5 is communicated with the second multi-way reversing valve through a second electromagnetic valve; when the first electromagnetic valve is powered on, the first pilot oil path X1 is communicated with a pilot oil port a2 of the second multi-way reversing valve, and when the first electromagnetic valve is powered off, the auxiliary winding pilot oil lifting path X4 is communicated with a pilot oil port a2 of the second multi-way reversing valve; when the second electromagnetic valve is powered on, the second pilot oil path X2 is communicated with the pilot oil port b2 of the second multi-way reversing valve, and when the second electromagnetic valve is powered off, the auxiliary winding pilot oil lowering path X5 is communicated with the pilot oil port b2 of the second multi-way reversing valve.
Optionally, the switching valve includes a first pilot-controlled directional branch valve, a second pilot-controlled directional branch valve, a fourth solenoid valve, a fifth solenoid valve, and a shuttle valve, the fourth solenoid valve is connected to the first pilot oil passage X1, the fifth solenoid valve is connected to the second pilot oil passage X2, and the first pilot oil passage X1 and the second pilot oil passage X2 are communicated through a sixth pilot oil passage X6; a communication position between the first pilot oil passage X1 and the sixth pilot oil passage X6 is provided between the fourth solenoid valve and the first solenoid valve, and a communication position between the second pilot oil passage X2 and the sixth pilot oil passage X6 is provided between the fifth solenoid valve and the second solenoid valve; and a shuttle valve is arranged on the sixth pilot oil path X6, and pilot oil ports of the first hydraulic control reversing branch valve and the second hydraulic control reversing branch valve are communicated with an oil outlet of the shuttle valve.
Optionally, a first oil inlet of the shuttle valve is communicated with the first pilot oil path X1, and a second oil inlet of the shuttle valve is communicated with the second pilot oil path X2.
According to the technical scheme, the rotary drilling rig power head rapid pressurizing and pulling hydraulic control system provided by the utility model has the advantages that the pilot oil introduced into the second multi-way reversing valve can be conveniently controlled by adding the first electromagnetic valve and the second electromagnetic valve in the pilot oil way of the hydraulic control system on the premise of not changing the functions of the hydraulic systems of the original pressurizing loop and the auxiliary hoisting loop. Through setting up the diverter valve, be convenient for control the hydraulic oil of second multichannel switching valve rear end whether flow to first motor or second motor, when the hydraulic oil of second multichannel switching valve rear end flows to first motor, second multichannel switching valve and first multichannel switching valve supply oil for first motor together to the input flow of the hydraulic oil of the first motor in pressurized circuit has been increased, the work efficiency of the first motor in pressurized circuit has been improved, thereby accelerate the pressurization and the speed of pulling up of unit head, satisfy the speed demand that the unit head pressurizes fast and pulls up.
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 for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of hydraulic control of a pressurized circuit of a prior art power head;
FIG. 2 is a schematic diagram of hydraulic control of a secondary hoist circuit in the prior art;
fig. 3 is a schematic structural diagram of a rapid pressurization and extraction hydraulic control system of a power head of a rotary drilling rig in an embodiment of the utility model;
fig. 4 is a schematic structural diagram of a rotary drilling rig power head rapid pressurization and pulling hydraulic control system in another embodiment of the utility model.
Wherein:
01. the hydraulic control system comprises a first motor, 02, a first multi-way reversing valve, 03, a first hydraulic pump, 04, a second motor, 05, a second multi-way reversing valve, 06 and a second hydraulic pump.
1. The hydraulic control system comprises a first motor, a second motor, a first multi-way reversing valve, a first hydraulic pump, a first electromagnetic valve, a second motor, a first hydraulic pump, a second electromagnetic valve, a second motor, a first hydraulic control reversing valve, a switching valve, a first hydraulic control reversing valve, a second electromagnetic valve, a second hydraulic control reversing valve, a third electromagnetic valve, a fourth electromagnetic valve, a shuttle valve, a fifth electromagnetic valve, a second multi-way reversing valve, a second electromagnetic valve, a second solenoid valve, a third solenoid valve, a second solenoid valve, a third solenoid.
Detailed Description
The utility model discloses a quick pressurizing and pulling hydraulic control system for a rotary drilling rig power head, which increases the input flow of hydraulic oil of a pressurizing loop, improves the working efficiency of the pressurizing loop and accelerates the pressurizing and pulling speed of the power head.
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.
Referring to fig. 3 and 4, the system for quickly pressurizing and pulling the power head of the rotary drilling rig comprises a first hydraulic pump 3, a first multi-way directional valve 2 and a first motor 1 which are communicated through a pipeline, and further comprises a second hydraulic pump 9, a second multi-way directional valve 7 and a second motor 5 which are communicated through a pipeline. The first hydraulic pump 3, the first multi-way directional valve 2 and the first motor 1 which are communicated through pipelines form a pressurizing loop for controlling the pressurization or the pulling of the power head. And the second hydraulic pump 9, the second multi-way reversing valve 7 and the second motor 5 which are communicated through pipelines form an auxiliary hoisting loop.
The pilot oil port a1 of the first multi-way selector valve 2 and the pilot oil port a2 of the second multi-way selector valve 7 communicate with each other through a first pilot oil passage X1, and the pilot oil port b1 of the first multi-way selector valve 2 and the pilot oil port b2 of the second multi-way selector valve 7 communicate with each other through a second pilot oil passage X2. Through the arrangement, the pilot oil port a1 of the first multi-way reversing valve 2 and the pilot oil port a2 of the second multi-way reversing valve 7 can realize simultaneous oil feeding, the pilot oil port b1 of the first multi-way reversing valve 2 and the pilot oil port b2 of the second multi-way reversing valve 7 can realize simultaneous oil feeding, so that the first multi-way reversing valve 2 and the second multi-way reversing valve 7 can be controlled to be simultaneously reversed, two hydraulic loops can convey hydraulic oil to the first motor 1 simultaneously, and pressurization or pulling is realized.
A first solenoid valve 4 is disposed on the first pilot oil path X1, a second solenoid valve 8 is disposed on the second pilot oil path X2, a switching valve 6 is disposed between the second multi-way directional control valve 7 and the second motor 5, and when the switching valve 6 is switched to the first position, an oil port of the switching valve 6 is communicated with the first motor 1 through a pipeline, so that hydraulic oil is supplemented to the power head pressurizing circuit. When the switching valve 6 is switched to the second position, the oil port of the switching valve 6 is communicated with the second motor 5 through a pipeline, and at the moment, the second multi-way directional valve 7 is used for controlling the direction change of hydraulic oil of the auxiliary winding loop. The first solenoid valve 4 controls whether or not the pilot oil port a2 of the second multi-way selector valve 7 communicates with the first pilot oil passage X1, and the second solenoid valve 8 controls whether or not the pilot oil port b2 of the second multi-way selector valve 7 communicates with the second pilot oil passage X2.
An overflow valve is arranged between the port a and the port B of the first motor 1, and the overflow valve is the same as that in the pressurizing circuit in the prior art, and is not described again here. An overflow valve is arranged between the port A and the port B of the second motor 5, and the overflow valve is the same as that in the auxiliary hoisting loop in the prior art, and is not described again here. The pressurization circuit is used to raise and lower the power head and transmit downward pressure during the drill-down process of the power head. The motor is a device for converting hydraulic energy into rotary output mechanical energy, and the first motor 1 is used for lifting and lowering the power head. The second motor 5 is an auxiliary lifting device which is not used in normal construction, so that in normal construction, the second multi-way directional valve 7 is switched to a direction of a line supplying hydraulic oil to the first motor 1, and the first multi-way directional valve 2 supplies oil to the first motor 1 in the pressurizing circuit, thereby increasing the input flow rate of the first motor 1 and improving the working efficiency.
According to the rotary drilling rig power head rapid pressurization and pulling hydraulic control system, on the premise that the functions of the hydraulic systems of the original pressurization loop and the auxiliary hoisting loop are not changed, the pilot oil introduced into the second multi-way reversing valve 7 is conveniently controlled by adding the first electromagnetic valve 4 and the second electromagnetic valve 8 in the pilot oil path of the hydraulic control system. Through setting up diverter valve 6, be convenient for control second multichannel switching valve 7 rear end hydraulic oil flow to first motor 1 or second motor 5, when the hydraulic oil flow to first motor 1 of second multichannel switching valve 7 rear end, second multichannel switching valve 7 and first multichannel switching valve 2 supply oil for first motor 1 together to increased the input flow of the first motor 1's of pressurization return circuit hydraulic oil, improved the work efficiency of the first motor 1 of pressurization return circuit, thereby accelerate the pressurization and the speed of pulling up of unit head, satisfy the speed demand that the quick pressurization of unit head and pull up.
In an embodiment, the switching valve 6 includes a first pilot-controlled directional branch valve 601, a second pilot-controlled directional branch valve 602, and a third electromagnetic valve 603, where the third electromagnetic valve 603 is configured to control a third pilot oil path X3, the third pilot oil path X3 is communicated with the pilot oil port a3 of the first pilot-controlled directional branch valve 601 and the pilot oil port a4 of the second pilot-controlled directional branch valve 602, when the third electromagnetic valve 603 is powered, the third pilot oil path X3 flows into the pilot oil port a3 and the pilot oil port a4, the first pilot-controlled directional branch valve 601 and the second pilot-controlled directional branch valve 602 are reversed, oil ports of the first pilot-controlled directional branch valve and the second pilot-controlled directional branch valve are communicated with the first motor 1, the second hydraulic pump 9 provides hydraulic oil for the first motor 1, that is, hydraulic oil is provided for the pressurizing circuit, and at this time, the second hydraulic pump 9 and the first hydraulic pump 3 provide hydraulic oil for the pressurizing circuit at the same time. When the third electromagnetic valve 603 is de-energized, the first hydraulic control directional branch valve 601 and the second hydraulic control directional branch valve 602 return, the second hydraulic pump 9 provides hydraulic oil for the second motor 5, that is, the auxiliary hoisting loop, and the first hydraulic pump 3 provides hydraulic oil for the pressurizing loop alone.
Specifically, a port P3 of the first pilot-controlled directional control branch valve 601 is communicated with a port a2 of the second multi-way directional control valve 7, a port P4 of the second pilot-controlled directional control branch valve 602 is communicated with a port B2 of the second multi-way directional control valve 7, and a port T3 of the first pilot-controlled directional control branch valve 601 and a port T4 of the second pilot-controlled directional control branch valve 602 are both communicated with the oil tank. The port A3 of the first pilot-operated directional control branch valve 601 is communicated with the connecting pipeline of the port a1 of the first multi-way directional control valve 2, and the port a4 of the second pilot-operated directional control branch valve 602 is communicated with the connecting pipeline of the port B1 of the first multi-way directional control valve 2. The port B3 of the first pilot-controlled directional control valve 601 communicates with the port a of the second motor 5, and the port B4 of the second pilot-controlled directional control valve 602 communicates with the port B of the second motor 5.
The rotary drilling rig power head rapid pressurization and lifting hydraulic control system further comprises an auxiliary hoisting pilot oil lifting path X4 and an auxiliary hoisting pilot oil lowering path X5. The auxiliary lift pilot oil path X4 is communicated with the second multi-way directional valve 7 through a first electromagnetic valve 4, the first electromagnetic valve 4 is used for controlling the switching of the pilot oil path entering the port a2 of the second multi-way directional valve 7, and the pilot oil path entering the port a2 of the second multi-way directional valve 7 comprises the auxiliary lift pilot oil path X4 and the first pilot oil path X1. The auxiliary hoisting pilot descending oil path X5 is communicated with the second multi-way directional valve 7 through a second electromagnetic valve 8, the second electromagnetic valve 8 is used for controlling the switching of the pilot oil path entering the port b2 of the second multi-way directional valve 7, and the pilot oil path entering the port b2 of the second multi-way directional valve 7 comprises the auxiliary hoisting pilot descending oil path X5 and a second pilot oil path X2.
Specifically, when the first solenoid valve 4 is energized, the first pilot oil passage X1 is communicated with the pilot oil port a2 of the second multi-way selector valve 7, and when the first solenoid valve 4 is de-energized, the auxiliary lift pilot oil passage X4 is communicated with the pilot oil port a2 of the second multi-way selector valve 7. When the second solenoid valve 8 is energized, the second pilot oil passage X2 is communicated with the pilot oil port b2 of the second multi-way selector valve 7, and when the second solenoid valve 8 is de-energized, the auxiliary lift pilot oil lowering passage X5 is communicated with the pilot oil port b2 of the second multi-way selector valve 7.
When the power head of the rotary drilling rig of the embodiment is rapidly pressurized: the first solenoid valve 4 and the third solenoid valve 603 are energized. When the first solenoid valve 4 is energized, the pilot control oil in the first pilot oil passage X1 simultaneously enters the pilot oil port a1 of the first multi-way selector valve 2 and the pilot oil port a2 of the second multi-way selector valve 7, and the first multi-way selector valve 2 and the second multi-way selector valve 7 are reversed. The third electromagnetic valve 603 is energized, the pilot control oil in the third pilot oil passage X3 simultaneously enters the pilot oil port a3 of the first pilot-controlled directional control valve 601 and the pilot oil port a4 of the second pilot-controlled directional control valve 602, and the first pilot-controlled directional control valve 601 and the second pilot-controlled directional control valve 602 are switched. The hydraulic oil output by the first hydraulic pump 3 flows together through the first multi-way directional valve 2 and the hydraulic oil output by the second hydraulic pump 9 through the second multi-way directional valve 7, then enters the port A of the first motor 1, and the hydraulic oil from the port B of the first motor 1 returns to the oil tank through the first multi-way directional valve 2 and the second multi-way directional valve 7 respectively to finish the lowering action and provide downward pressure in the drilling process of the power head.
When the power head of the rotary drilling rig of the embodiment is rapidly pulled up: the second solenoid valve 8 and the third solenoid valve 603 are energized. When the second solenoid valve 8 is energized, the pilot control oil in the second pilot oil passage X2 simultaneously enters the pilot oil port b1 of the first multi-way selector valve 2 and the pilot oil port b2 of the second multi-way selector valve 7, and the first multi-way selector valve 2 and the second multi-way selector valve 7 are switched. The third electromagnetic valve 603 is energized, the pilot control oil in the third pilot oil passage X3 simultaneously enters the pilot oil port a3 of the first pilot-controlled directional control valve 601 and the pilot oil port a4 of the second pilot-controlled directional control valve 602, and the first pilot-controlled directional control valve 601 and the second pilot-controlled directional control valve 602 are switched. The hydraulic oil output by the first hydraulic pump 3 is converged by the second multi-way directional valve 7 through the first multi-way directional valve 2 and the hydraulic oil output by the second hydraulic pump 9, and then enters the port B of the first motor 1, and the hydraulic oil from the port A of the first motor 1 returns to the oil tank through the first multi-way directional valve 2 and the second multi-way directional valve 7 respectively, so that the rapid lifting action is completed.
It can be understood that the first electromagnetic valve 4 and the second electromagnetic valve 8 work in cooperation with the switching valve 6, and when the power head of the rotary drilling rig needs to be pressurized and pulled up and down rapidly, the relevant electromagnetic valves are powered on, so that pilot oil for controlling the first multi-way reversing valve 2 can control the second multi-way reversing valve 7 at the same time.
Auxiliary hoisting action: the first electromagnetic valve 4, the second electromagnetic valve 8 and the third electromagnetic valve 603 are all not powered, and the first hydraulic control reversing branch valve 601 and the second hydraulic control reversing branch valve 602 are all not reversed. The pilot control oil enters the oil port a2 of the second multi-way directional control valve 7 through the auxiliary hoisting pilot oil lifting path X4, and the hydraulic oil output by the second hydraulic pump 9 reaches the second motor 5 through the second multi-way directional control valve 7 and the switching valve 6, so that the auxiliary hoisting lifting action is realized. The pilot control oil enters the b2 oil port of the second multi-way directional control valve 7 through the auxiliary hoisting pilot lowering oil passage X5, and the hydraulic oil output by the second hydraulic pump 9 reaches the second motor 5 through the second multi-way directional control valve 7 and the switching valve 6, so that the auxiliary hoisting lowering action is realized.
In another embodiment, as shown in fig. 4, the switching valve 6 includes a first pilot-controlled directional split valve 601, a second pilot-controlled directional split valve 602, a fourth solenoid valve 604, a fifth solenoid valve 606, and a shuttle valve 605. The fourth solenoid valve 604 is connected to the first pilot oil passage X1, the fifth solenoid valve 606 is connected to the second pilot oil passage X2, and the first pilot oil passage X1 and the second pilot oil passage X2 are communicated with each other through a sixth pilot oil passage X6.
A front end position of the first pilot oil passage X1 near the fourth electromagnetic valve 604 is communicated with the pilot oil port a1 of the first multi-way selector valve 2, and a front end position of the second pilot oil passage X2 near the fifth electromagnetic valve 606 is communicated with the pilot oil port b1 of the first multi-way selector valve 2. The front position here refers to a position that is reached first when the hydraulic oil flows, that is, the end of the fourth solenoid valve 604 remote from the first solenoid valve 4, or the end of the fifth solenoid valve 606 remote from the second solenoid valve 8. A communication position between the first pilot oil passage X1 and the sixth pilot oil passage X6 is provided between the fourth solenoid valve 604 and the first solenoid valve 4, and a communication position between the second pilot oil passage X2 and the sixth pilot oil passage X6 is provided between the fifth solenoid valve 606 and the second solenoid valve 8.
In order to prevent the hydraulic oil flowing into sixth pilot oil path X6 from flowing into first pilot oil path X1 and the hydraulic oil flowing into sixth pilot oil path X6 from flowing into second pilot oil path X2, shuttle valve 605 is provided in sixth pilot oil path X6. A first oil inlet of the shuttle valve 605 is communicated with the first pilot oil passage X1, and a second oil inlet of the shuttle valve 605 is communicated with the second pilot oil passage X2. When the first oil inlet of the shuttle valve 605 is communicated with the oil outlet, the second oil inlet of the shuttle valve 605 is disconnected with the oil outlet; when the second oil inlet of the shuttle valve 605 is communicated with the oil outlet, the first oil inlet of the shuttle valve 605 is disconnected with the oil outlet. The pilot oil ports of the first hydraulic control directional control branch valve 601 and the second hydraulic control directional control branch valve 602 are communicated with the oil outlet port of the shuttle valve 605. In this embodiment, other structures refer to the above embodiments, and are not described herein again.
When the power head of the rotary drilling rig of the embodiment is rapidly pressurized: the first solenoid valve 4 and the fourth solenoid valve 604 are energized. When the first solenoid valve 4 and the fourth solenoid valve 604 are energized, the pilot control oil in the first pilot oil passage X1 simultaneously enters the pilot oil port a1 of the first multi-way selector valve 2 and the pilot oil port a2 of the second multi-way selector valve 7, and the first multi-way selector valve 2 and the second multi-way selector valve 7 are reversed. Meanwhile, as the hydraulic oil of the first pilot oil path X1 flows into the sixth pilot oil path X6, the first oil inlet of the shuttle valve 605 is communicated with the oil outlet, the pilot control oil of the sixth pilot oil path X6 simultaneously enters the pilot oil port a3 of the first pilot-controlled directional control valve 601 and the pilot oil port a4 of the second pilot-controlled directional control valve 602, and the first pilot-controlled directional control valve 601 and the second pilot-controlled directional control valve 602 are switched. After passing through the first multi-way directional valve 2, the hydraulic oil output by the first hydraulic pump 3 and the hydraulic oil output by the second hydraulic pump 9 are converged by the second multi-way directional valve 7, and then enter the port A of the first motor 1, and the hydraulic oil coming out of the port B of the first motor 1 returns to the oil tank through the first multi-way directional valve 2 and the second multi-way directional valve 7 respectively, so that the lowering action is completed, and downward pressure is provided in the drilling process of the power head.
When the power head of the rotary drilling rig of the embodiment is rapidly pulled up: the second solenoid valve 8 and the fifth solenoid valve 606 are energized. When the second solenoid valve 8 and the fifth solenoid valve 606 are energized, the pilot control oil in the second pilot oil passage X2 simultaneously enters the pilot oil port b1 of the first multi-way selector valve 2 and the pilot oil port b2 of the second multi-way selector valve 7, and the first multi-way selector valve 2 and the second multi-way selector valve 7 are reversed. Meanwhile, as the hydraulic oil of the second pilot oil path X2 flows into the sixth pilot oil path X6, the second oil inlet of the shuttle valve 605 is communicated with the oil outlet, the pilot control oil of the sixth pilot oil path X6 simultaneously enters the pilot oil port a3 of the first pilot-controlled directional branch valve 601 and the pilot oil port a4 of the second pilot-controlled directional branch valve 602, and the first pilot-controlled directional branch valve 601 and the second pilot-controlled directional branch valve 602 are switched. After passing through the first multi-way directional valve 2, the hydraulic oil output by the first hydraulic pump 3 and the hydraulic oil output by the second hydraulic pump 9 are converged by the second multi-way directional valve 7, and then enter the port B of the first motor 1, and the hydraulic oil coming out from the port A of the first motor 1 returns to the oil tank through the first multi-way directional valve 2 and the second multi-way directional valve 7 respectively, so that the rapid lifting action is completed.
In the description of the present solution, it is to be understood that the terms "upper", "lower", "vertical", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present solution.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A rotary drilling rig power head rapid pressurization and hydraulic control system for pulling comprises a first hydraulic pump (3), a first multi-way directional control valve (2) and a first motor (1) which are communicated through pipelines, and a second hydraulic pump (9), a second multi-way directional control valve (7) and a second motor (5) which are communicated through pipelines, wherein a pilot oil port a1 of the first multi-way directional control valve (2) is communicated with a pilot oil port a2 of the second multi-way directional control valve (7) through a first pilot oil path X1, and a pilot oil port b1 of the first multi-way directional control valve (2) is communicated with a pilot oil port b2 of the second multi-way directional control valve (7) through a second pilot oil path X2;
the first pilot oil path X1 is provided with a first electromagnetic valve (4), the second pilot oil path X2 is provided with a second electromagnetic valve (8), a switching valve (6) is arranged between the second multi-way reversing valve (7) and the second motor (5), when the switching valve (6) is switched to a first position, an oil port of the switching valve (6) is communicated with the first motor (1) through a pipeline, and when the switching valve (6) is switched to a second position, the oil port of the switching valve (6) is communicated with the second motor (5) through a pipeline.
2. The rotary drilling rig power head rapid pressurizing and pulling hydraulic control system according to claim 1, wherein the switching valve (6) comprises a first hydraulic control directional branch valve (601), a second hydraulic control directional branch valve (602) and a third electromagnetic valve (603), the third electromagnetic valve (603) is used for controlling a third pilot oil path X3, and the third pilot oil path X3 is communicated with a pilot oil port a3 of the first hydraulic control directional branch valve (601) and a pilot oil port a4 of the second hydraulic control directional branch valve (602).
3. The rotary drilling rig power head rapid pressurizing and pulling hydraulic control system as claimed in claim 2, wherein a port P3 of the first hydraulic control directional control branch valve (601) is communicated with a port A2 of a second multi-way directional control valve (7), a port P4 of the second hydraulic control directional control branch valve (602) is communicated with a port B2 of the second multi-way directional control valve (7), and a port T3 of the first hydraulic control directional control branch valve (601) and a port T4 of the second hydraulic control directional control branch valve (602) are both communicated with a fuel tank.
4. The rotary drilling rig power head rapid pressurizing and pulling hydraulic control system as claimed in claim 2, characterized in that the port A3 of the first hydraulic control directional control branch valve (601) is communicated with the connecting pipeline of the port A1 of the first multi-way directional control valve (2), and the port A4 of the second hydraulic control directional control branch valve (602) is communicated with the connecting pipeline of the port B1 of the first multi-way directional control valve (2);
the port B3 of the first hydraulic control directional control branch valve (601) is communicated with the port A of the second motor (5), and the port B4 of the second hydraulic control directional control branch valve (602) is communicated with the port B of the second motor (5).
5. The rotary drilling rig power head rapid pressurizing and pulling hydraulic control system according to claim 2, wherein when the third electromagnetic valve (603) is powered on, the switching valve (6) is switched to the first position, the second hydraulic pump (9) supplies hydraulic oil to the first motor (1), and the second hydraulic pump (9) and the first hydraulic pump (3) simultaneously supply hydraulic oil to a pressurizing loop; when the third electromagnetic valve (603) is powered off, the switching valve (6) returns to the second position, the second hydraulic pump (9) provides hydraulic oil for the second motor (5), and the second hydraulic pump (9) provides hydraulic oil for the auxiliary hoisting loop.
6. The rotary drilling rig power head rapid pressurizing and pulling hydraulic control system as claimed in claim 1, further comprising an auxiliary hoisting pilot oil lifting path X4 and an auxiliary hoisting pilot oil lowering path X5; the auxiliary hoisting pilot oil lifting path X4 is communicated with a second multi-way reversing valve (7) through a first electromagnetic valve (4), and the auxiliary hoisting pilot oil lowering path X5 is communicated with the second multi-way reversing valve (7) through a second electromagnetic valve (8);
when the first electromagnetic valve (4) is powered on, the first pilot oil path X1 is communicated with a pilot oil port a2 of the second multi-way reversing valve (7), and when the first electromagnetic valve (4) is powered off, the auxiliary winding pilot oil lifting path X4 is communicated with a pilot oil port a2 of the second multi-way reversing valve (7);
when the second electromagnetic valve (8) is energized, the second pilot oil path X2 is communicated with the pilot oil port b2 of the second multi-way selector valve (7), and when the second electromagnetic valve (8) is de-energized, the auxiliary lift pilot oil path X5 is communicated with the pilot oil port b2 of the second multi-way selector valve (7).
7. The rotary drilling rig power head rapid pressurization and extraction hydraulic control system according to claim 1, wherein the switching valve (6) comprises a first hydraulic control reversing branch valve (601), a second hydraulic control reversing branch valve (602), a fourth electromagnetic valve (604), a fifth electromagnetic valve (606) and a shuttle valve (605), the fourth electromagnetic valve (604) is connected to the first pilot oil path X1, the fifth electromagnetic valve (606) is connected to the second pilot oil path X2, and the first pilot oil path X1 is communicated with the second pilot oil path X2 through a sixth pilot oil path X6;
a communication position between the first pilot oil passage X1 and the sixth pilot oil passage X6 is provided between the fourth solenoid valve (604) and the first solenoid valve (4), and a communication position between the second pilot oil passage X2 and the sixth pilot oil passage X6 is provided between the fifth solenoid valve (606) and the second solenoid valve (8);
a shuttle valve (605) is arranged on the sixth pilot oil path X6, and pilot oil ports of the first hydraulic control directional control branch valve (601) and the second hydraulic control directional control branch valve (602) are communicated with an oil outlet of the shuttle valve (605).
8. The rotary drilling rig power head rapid pressurization and extraction hydraulic control system according to claim 7, characterized in that a first oil inlet of the shuttle valve (605) is communicated with the first pilot oil path X1, and a second oil inlet of the shuttle valve (605) is communicated with the second pilot oil path X2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123057954.0U CN216278716U (en) | 2021-12-06 | 2021-12-06 | Quick pressurizing and pulling hydraulic control system for power head of rotary drilling rig |
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| CN202123057954.0U CN216278716U (en) | 2021-12-06 | 2021-12-06 | Quick pressurizing and pulling hydraulic control system for power head of rotary drilling rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114955944A (en) * | 2022-05-31 | 2022-08-30 | 杭叉集团股份有限公司 | Fork truck equipment speed control hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114955944A (en) * | 2022-05-31 | 2022-08-30 | 杭叉集团股份有限公司 | Fork truck equipment speed control hydraulic system |
| CN114955944B (en) * | 2022-05-31 | 2024-02-27 | 杭叉集团股份有限公司 | Speed control hydraulic system of forklift working device |
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