CN219711924U - Large-inertia rotary drilling rig rotation system based on valve port independent control - Google Patents
Large-inertia rotary drilling rig rotation system based on valve port independent control Download PDFInfo
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- CN219711924U CN219711924U CN202320820654.3U CN202320820654U CN219711924U CN 219711924 U CN219711924 U CN 219711924U CN 202320820654 U CN202320820654 U CN 202320820654U CN 219711924 U CN219711924 U CN 219711924U
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- 238000005553 drilling Methods 0.000 title claims abstract description 28
- 239000003921 oil Substances 0.000 claims description 79
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Abstract
The utility model discloses a large inertia rotary drilling rig rotary system based on valve port independent control, which comprises a variable pump, an oil tank, an overflow valve, a valve port independent control valve group, a hydraulic motor, a load, a first pressure sensor, a second pressure sensor, a third pressure sensor, an angle sensor, a controller and an electric control handle. The utility model cancels the balance valve and the complex machine liquid control structure in the traditional system, fully utilizes the advantage of multi-degree-of-freedom control of the valve port independent control valve group while simplifying the mechanical structure of the system, improves the compatibility of the system, reduces the energy consumption of the system, improves the dynamic response performance of the system, ensures that the system can accurately regulate the back pressure of the system while realizing high-precision motion control, effectively reduces hydraulic impact and ensures the stability of the system.
Description
Technical Field
The utility model relates to a large-inertia rotary drilling rig rotary system, in particular to a large-inertia rotary drilling rig rotary system based on independent control of valve ports.
Background
The rotary drilling rig is an engineering machine which is widely applied to foundation engineering construction to finish various pore-forming operations, and the most main application fields are in construction and construction of cast-in-place piles, foundation reinforcement and the like. The rotary drilling rig is widely applied due to the advantages of flexible movement, high drilling efficiency, good pore-forming quality, small environmental pollution and the like. In addition, the rotary drilling rig has strong adaptability to external conditions, and can be conveniently applied to various domestic soil geology, and has wide application range.
The positioning of the rotary system of the rotary drilling rig is the most basic and most used construction action in the construction process, and the positioning precision of the rotary system directly determines the quality of the hole, so the rotary system positioning method has important significance for positioning research of the rotary system. The traditional rotary drilling rig rotary system mainly comprises a rotary motor, a buffer balance valve, a main control valve, a hydraulic pump and the like. However, because the inertial load of the rotary system of the rotary drilling rig is large, the rotary system is frequently started and braked, and the control valve is suddenly closed or the load movement is suddenly reversed, the hydraulic impact phenomenon can be generated. The hydraulic impact seriously affects the stable operation of the system, reduces the service life of components and parts, and even causes the actuator to generate misoperation, thereby causing safety accidents. The buffer balance valve is utilized to adjust the back pressure of the system, which is a main mode for reducing the hydraulic impact of the system at present, but the mode has the advantages of complex mechanical structure, low precision and limited effect. Therefore, there is a need to develop new swing systems that allow for more precise adjustments to the back pressure of the system, thereby reducing the hydraulic shock to the system.
The traditional four-way valve cannot regulate the back pressure of the system at the same time when controlling the movement of the hydraulic system, which is caused by the mechanical coupling of the oil inlet and the oil outlet. Unlike conventional four-way valve control systems, the inlet and outlet flows are separate in a valve port independent system. In the system, the pressure of an independent cavity is possible to be regulated, the degree of freedom of control is improved due to the introduction of independent control of the valve ports, and the back pressure of the hydraulic slewing system can be regulated and controlled independently, so that the stability of the system can be ensured while the high-precision motion control of the system is realized, the working condition adaptability of the system is further improved, the dynamic response performance of the system is improved, and the energy efficiency of the system is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a large inertia rotary drilling rig rotary system based on valve port independent control, which realizes high-precision motion control of the system and simultaneously accurately adjusts the back pressure of the system, ensures the stability of the system, further improves the working condition adaptability of the system, improves the dynamic response performance of the system and improves the energy efficiency of the system.
The utility model aims at realizing the following technical scheme: a large inertia rotary drilling rig rotary system based on valve port independent control includes:
the variable pump is used for providing required flow for the rotary system;
the hydraulic motor comprises a chamber 1 and a chamber 2 and is used for converting hydraulic energy provided by the variable pump into mechanical energy, and loading the mechanical energy to an output shaft connected with the hydraulic motor, wherein the output shaft of the hydraulic motor and the load synchronously rotate, so that the loading and rotation action of the rotary drilling rig is realized;
the oil tank is used for storing hydraulic oil required by the system;
a controller for providing control signals to the system;
the electric control handle is used for inputting a starting signal to the controller;
the valve port independent control valve group comprises a first proportional reversing valve and a second proportional reversing valve, and is used for controlling the pressure of two cavities of the hydraulic motor, accurately controlling the rotation angle of the hydraulic motor, and accurately regulating the back pressure of the system and reducing the pressure impact of the system under the condition of canceling the balance valve of the traditional system;
the overflow valve is used for ensuring the safety of the system, and when the pressure of the system exceeds the set pressure, the overflow valve is opened to overflow, so that the unloading of the system is realized;
a first pressure sensor for measuring the variable pump outlet pressure;
a second pressure sensor for measuring the pressure of the hydraulic motor chamber 1;
a third pressure sensor for measuring the pressure of the hydraulic motor chamber 2;
and the angle sensor is used for measuring the rotation angle of the load.
Optionally, an oil outlet of the variable pump is connected with an oil inlet P of the valve port independent control valve group through a hydraulic pipeline; the oil return port T of the valve port independent control valve bank is connected with the oil tank through a hydraulic pipeline; the first working oil port A of the valve port independent control valve group is connected with the hydraulic motor chamber 1 through a hydraulic pipeline; the second working oil port B of the valve port independent control valve group is connected with the hydraulic motor chamber 2 through a hydraulic pipeline; the valve port independent control valve group is connected with the controller through a circuit.
Optionally, the controller is connected with the electric control handle, the variable pump, the first proportional reversing valve and the second proportional reversing valve through electric circuits respectively.
Optionally, the relief valve is connected between the variable pump and the oil tank by a hydraulic conduit.
Optionally, the valve port independent control valve group comprises a first proportional reversing valve and a second proportional reversing valve, and the first proportional reversing valve and the second proportional reversing valve are three-position four-way proportional reversing valves; the first proportional reversing valve comprises an oil inlet P1, an oil return port T1 and an oil outlet A1, the second proportional reversing valve comprises an oil inlet P2, an oil return port T2 and an oil outlet A2, wherein the oil inlet P1 of the first proportional reversing valve and the oil inlet P2 of the second proportional reversing valve are connected and connected with the oil inlet P of the valve port independent control valve group, the oil outlet A1 of the first proportional reversing valve is connected with a first working oil port A of the valve port independent control valve group, the oil outlet A2 of the second proportional reversing valve is connected with a second working oil port B of the valve port independent control valve group, and the oil return port T1 of the first proportional reversing valve and the oil return port T2 of the second proportional reversing valve are connected and connected with the oil return port T of the valve port independent control valve group.
In the technical scheme, the large-inertia rotary drilling rig rotary system based on valve port independent control has the following beneficial effects:
(1) The utility model can realize the motion control of the rotary system of the rotary drilling rig with high precision, low energy consumption and low delay, replaces the complex machine liquid control mechanism of the traditional system by using the valve port independent control valve group, and fully utilizes the advantage of the multi-degree-of-freedom control of the valve port independent control valve while simplifying the mechanical structure of the system, thereby improving the compatibility of the system and the dynamic response performance of the system.
(2) The utility model improves the working condition adaptability of the rotary system of the rotary drilling rig, eliminates the problem of poor system working condition adaptability caused by inherent hardware defects of the balance valve and a mechanical adjusting method by canceling the balance valve in the traditional loop, and ensures that the system accurately adjusts the back pressure of the system while realizing high-precision motion control by the coordinated control of two control valves in the valve port independent control valve group, thereby effectively reducing hydraulic impact and ensuring the stability of the system.
Drawings
FIG. 1 is a hydraulic schematic diagram of a large inertia rotary drilling rig swing system based on valve port independent control of the present utility model.
In the figure: 1. a variable displacement pump; 2. an oil tank; 3. an overflow valve; 4. The valve port independently controls the valve group; 5. a hydraulic motor; 6. a load; 7. a first pressure sensor; 8. a second pressure sensor; 9. a third pressure sensor; 10. an angle sensor; 11. a controller; 12. an electric control handle.
FIG. 2 is a schematic diagram of a valve port independent control valve assembly of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the large inertia rotary drilling rig rotary system based on valve port independent control provided by the utility model comprises:
the variable pump 1 is used for providing required energy for a system; the oil tank 2 is used for storing hydraulic oil required by the system; the overflow valve 3 is used for ensuring the safety of the system, and when the pressure of the system exceeds the set pressure, the overflow valve 3 opens overflow, so that the unloading of the system is realized; the controller 11 is configured to provide a control signal for the system; the hydraulic motor 5 and the load 6 form a system actuator part together, and the hydraulic energy provided by the variable pump 1 is converted into mechanical energy to realize the rotation action of the rotary drilling rig; the electric control handle 12 is used for inputting a starting signal to the controller, and controlling the first proportional reversing valve 41 and the second proportional reversing valve 42 through the controller 11 so as to control the action of the hydraulic motor 5.
The valve port independent control valve group 4 comprises a first proportional reversing valve 41 and a second proportional reversing valve 42, and utilizes the advantage of multi-degree-of-freedom control of the valve port independent control valve group 4 to realize high-precision control under different working conditions through coordinated control of two control valves in the valve port independent control valve group 4, accurately control the flow of two cavities of the hydraulic motor 5, accurately control the rotation angle of the hydraulic motor 5, and simultaneously, under the condition of canceling a traditional system balance valve, accurately regulate the back pressure of the system and reduce the pressure impact of the system.
The oil outlet of the variable pump 1 is connected with the oil inlet P of the valve port independent control valve group 4 through a hydraulic pipeline; the oil return port T of the valve port independent control valve group 4 is connected with the oil tank 2 through a hydraulic pipeline; the first working oil port A of the valve port independent control valve group 4 is connected with the chamber 1 of the hydraulic motor 5 through a hydraulic pipeline; the second working oil port B of the valve port independent control valve group 4 is connected with the chamber 2 of the hydraulic motor 5 through a hydraulic pipeline; the overflow valve 3 is connected between the variable pump 1 and the oil tank 2 through a hydraulic pipeline; the valve port independent control valve group 4 is connected with the controller 11 through a circuit.
The controller 11 is connected with the electric control handle 12, the variable pump 1, the first proportional reversing valve 41 and the second proportional reversing valve 42 through electric circuits respectively.
Referring to fig. 2, the valve port independent control valve group 4 includes a first proportional directional valve 41 and a second proportional directional valve 42, where the first proportional directional valve 41 and the second proportional directional valve 42 are three-position four-way proportional directional valves; the first proportional reversing valve 41 comprises an oil inlet P1, an oil return port T1 and an oil outlet A1, the second proportional reversing valve 42 comprises an oil inlet P2, an oil return port T2 and an oil outlet A2, the oil inlet P1 of the first proportional reversing valve 41 and the oil inlet P2 of the second proportional reversing valve 42 are connected with the oil inlet P of the valve port independent control valve group 4, the oil outlet A1 of the first proportional reversing valve 41 is connected with a first working oil port A of the valve port independent control valve group 4, the oil outlet A2 of the second proportional reversing valve 42 is connected with a second working oil port B of the valve port independent control valve group 4, and the oil return port T1 of the first proportional reversing valve 41 and the oil return port T2 of the second proportional reversing valve 42 are connected with the oil return port T of the valve port independent control valve group 4.
Specific examples are as follows:
according to the utility model, the variable pump 1 provides hydraulic flow and pressure, the valve port independent control valve group 4 controls the flow of two cavities of the hydraulic motor 5, and the back pressure of the system is regulated when pressure impact is generated, so that the running stability of the system is ensured. When the first proportional reversing valve 41 is an oil inlet control valve, the second proportional reversing valve 42 is an oil return port control valve, when the rotary system works, an electric control handle 12 inputs a starting signal to the controller 11, the controller 11 provides a control signal for the variable pump 1, the variable pump 1 provides a required flow for the system, meanwhile, the controller 11 sends a control signal to the first proportional reversing valve 41, the first proportional reversing valve 41 moves to a specified valve core displacement so as to control the oil inlet flow, and sends a control signal to the second proportional reversing valve 42, the second proportional reversing valve 42 moves to the specified valve core displacement, the oil return port pressure control is realized, cavitation is prevented, the two proportional control valves are coordinated, the two valve core controls are not affected each other, the first pressure sensor 7 acquires the outlet pressure of the variable pump 1, the second pressure sensor 8 acquires the pressure of the chamber 1, the third pressure sensor 9 acquires the pressure of the chamber 2, the angle sensor 10 acquires the load rotation angle, and feeds back to the controller 11, and the controller 11 further adjusts the output control signal according to the feedback signal, so that the rotary drilling machine realizes high-precision motion control and reduces the energy consumption of the system.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (5)
1. The utility model provides a big inertia rotary drilling rig rotary system based on valve port independent control which characterized in that, a big inertia rotary system based on valve port independent control include:
a variable pump (1) for providing a required flow rate for the slewing system;
the hydraulic motor (5) comprises a chamber 1 and a chamber 2 and is used for converting hydraulic energy provided by the variable pump (1) into mechanical energy so as to realize the loading rotation action of the rotary drilling rig;
the oil tank (2) is used for storing hydraulic oil required by the system;
a controller (11) for providing a control signal to the system;
an electric control handle (12) for inputting a start signal to the controller (11);
the valve port independent control valve group (4) comprises a first proportional reversing valve (41) and a second proportional reversing valve (42) and is used for controlling the pressure of two cavities of the hydraulic motor (5), accurately controlling the rotation angle of the hydraulic motor (5), and simultaneously accurately regulating the back pressure of the system and reducing the pressure impact of the system under the condition of canceling the balance valve of the traditional system;
the overflow valve (3) is used for ensuring the safety of the system, and when the pressure of the system exceeds the set pressure, the overflow valve (3) opens overflow, so that the unloading of the system is realized;
a first pressure sensor (7) for measuring the outlet pressure of the variable pump (1);
a second pressure sensor (8) for measuring the pressure of the chamber 1 of the hydraulic motor (5);
a third pressure sensor (9) for measuring the pressure of the chamber 2 of the hydraulic motor (5);
an angle sensor (10) for measuring the rotation angle of the load (6).
2. The large inertia rotary drilling machine rotary system based on valve port independent control of claim 1, wherein: an oil outlet of the variable pump (1) is connected with an oil inlet P of the valve port independent control valve group (4) through a hydraulic pipeline; the oil return port T of the valve port independent control valve group (4) is connected with the oil tank (2) through a hydraulic pipeline; the first working oil port A of the valve port independent control valve group (4) is connected with the chamber 1 of the hydraulic motor (5) through a hydraulic pipeline; the second working oil port B of the valve port independent control valve group (4) is connected with the chamber 2 of the hydraulic motor (5) through a hydraulic pipeline; the valve port independent control valve group (4) is connected with the controller (11) through a circuit.
3. The large inertia rotary drilling machine rotary system based on valve port independent control of claim 1, wherein: the controller (11) is respectively connected with the electric control handle (12), the variable pump (1), the first proportional reversing valve (41) and the second proportional reversing valve (42) through electric circuits.
4. The large inertia rotary drilling machine rotary system based on valve port independent control of claim 1, wherein: the overflow valve (3) is connected between the variable pump (1) and the oil tank (2) through a hydraulic pipeline.
5. The large inertia rotary drilling machine rotary system based on valve port independent control of claim 2, wherein: the valve port independent control valve group (4) comprises a first proportional reversing valve (41) and a second proportional reversing valve (42), and the first proportional reversing valve (41) and the second proportional reversing valve (42) are three-position four-way proportional reversing valves; the first proportional reversing valve (41) comprises an oil inlet P1, an oil return port T1 and an oil outlet A1, the second proportional reversing valve (42) comprises an oil inlet P2, an oil return port T2 and an oil outlet A2, the oil inlet P1 of the first proportional reversing valve (41) is connected with the oil inlet P2 of the second proportional reversing valve (42) and is connected with the oil inlet P of the valve port independent control valve group (4), the oil outlet A1 of the first proportional reversing valve (41) is connected with a first working oil port A of the valve port independent control valve group (4), the oil outlet A2 of the second proportional reversing valve (42) is connected with a second working oil port B of the valve port independent control valve group (4), and the oil return port T1 of the first proportional reversing valve (41) is connected with the oil return port T2 of the second proportional reversing valve (42) and is connected with the oil return port T of the valve port independent control valve group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320820654.3U CN219711924U (en) | 2023-04-13 | 2023-04-13 | Large-inertia rotary drilling rig rotation system based on valve port independent control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320820654.3U CN219711924U (en) | 2023-04-13 | 2023-04-13 | Large-inertia rotary drilling rig rotation system based on valve port independent control |
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| Publication Number | Publication Date |
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| CN219711924U true CN219711924U (en) | 2023-09-19 |
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| CN202320820654.3U Active CN219711924U (en) | 2023-04-13 | 2023-04-13 | Large-inertia rotary drilling rig rotation system based on valve port independent control |
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| CN (1) | CN219711924U (en) |
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- 2023-04-13 CN CN202320820654.3U patent/CN219711924U/en active Active
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