CN115405578A - Micro-angle stepping control method for hydraulic motor - Google Patents
Micro-angle stepping control method for hydraulic motor Download PDFInfo
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- CN115405578A CN115405578A CN202210985877.5A CN202210985877A CN115405578A CN 115405578 A CN115405578 A CN 115405578A CN 202210985877 A CN202210985877 A CN 202210985877A CN 115405578 A CN115405578 A CN 115405578A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 claims description 15
- 238000004146 energy storage Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 238000011946 reduction process Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process 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
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/18—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors used in combination for obtaining stepwise operation of a single controlled member
- F15B11/186—Rotary stepwise operation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7058—Rotary output members
-
- 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
- F15B2211/765—Control of position or angle of the output member
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a micro-angle stepping control method for a hydraulic motor, and belongs to the field of hydraulic transmission. A two-position four-way reversing valve, a one-way valve, a pulse oil cylinder and a two-position two-way hydraulic reversing valve are sequentially arranged between the hydraulic pump and the hydraulic motor, and the hydraulic motor is driven to rotate by a tiny angle each time through the cooperative control of the pulse oil cylinder, the manual reversing valve and the hydraulic reversing valve, so that the stepping control of the rotating angle is realized; the hydraulic reversing valve realizes the automatic linkage control from the hydraulic pump to the pulse oil cylinder and from the pulse oil cylinder to the two sections of oil paths of the hydraulic motor, and improves the control and regulation efficiency; and a technical foundation is laid for the automatic and accurate control of the accurate guide drilling and the swing mechanism.
Description
Technical Field
The invention belongs to the field of hydraulic transmission, and particularly relates to a hydraulic motor micro-angle stepping control method.
Background
Most of the rotary devices such as a power head of the existing coal mine drilling machine are driven by a hydraulic motor, the adopted hydraulic system has no precise control function, and the rotation angle of the motor is uncontrollable, so that the requirements of accurate guide drilling and automatic control of the coal mine drilling machine are difficult to meet.
In the prior art, the angle measurement or control of rotating parts such as a drilling machine power head, a rotating joint and the like adopts a rotary encoder or a combined proximity switch, the technology must adopt an electric control mode, the related system is complex, and the application range of the technology in the underground coal mine is very limited. Such as 202010125678.8, 201610475239.3, 201410097402.8.
Disclosure of Invention
In view of the above, the present invention provides a method for controlling a hydraulic motor by micro-angle stepping, so as to solve the problem that the existing coal mine drilling machine lacks an accurate control function and the rotation angle of the motor is uncontrollable.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydraulic motor micro-angle stepping control method mainly comprises the following steps:
a two-position four-way reversing valve 2, a one-way valve 3, a pulse oil cylinder 4 and a two-position two-way hydraulic reversing valve 5 are sequentially arranged between the hydraulic pump 1 and the hydraulic motor 6; the hydraulic pump 1 is connected with an oil inlet of the two-position four-way reversing valve 2, an oil return port of the two-position four-way reversing valve 2 is connected with an oil tank 8, a port B of the two-position four-way reversing valve 2 is communicated with a right cavity of the pulse oil cylinder 4 through the one-way valve 3, a port A of the two-position four-way reversing valve 2 is communicated with a left cavity of the pulse oil cylinder 4, and a right cavity of the pulse oil cylinder 4 is communicated with the hydraulic motor 6 through the two-position two-way hydraulic reversing valve 5; a control oil port of the two-position two-way hydraulic reversing valve 5 is communicated with an A port of the two-position four-way reversing valve 2 through an oil pipe 9;
oil charge energy storage process:
the valve cores in the two-position four-way reversing valve 2 and the two-position two-way hydraulic reversing valve 5 are both positioned at the right position;
pressure oil output by the hydraulic pump 1 sequentially passes through the two-position four-way reversing valve 2 and the one-way valve 3, is injected into a right cavity of the pulse oil cylinder 4 and fills the right cavity of the pulse oil cylinder 4 with oil, and the oil entering the right cavity pushes a piston of the pulse oil cylinder 4 to move from right to left;
the oil in the left cavity of the pulse oil cylinder 4 is extruded out and returns to the oil tank 8 through the two-position four-way reversing valve 2;
the two-position two-way hydraulic reversing valve 5 at the right position enables an oil path between the pulse oil cylinder 4 and the hydraulic motor 6 to be in a disconnected state, and oil liquid in the right cavity of the pulse oil cylinder 4 cannot enter the hydraulic motor 6, so that the pulse oil cylinder is always in an oil charging and energy storing state;
the pulse rotating process:
a valve core in the two-position four-way reversing valve 2 is switched to a left position, and meanwhile, pressure oil output by the hydraulic pump 1 sequentially passes through the two-position four-way reversing valve 2 and an oil pipe 9 to enter a control oil port of the two-position two-way hydraulic reversing valve 5 so as to switch the two-position two-way hydraulic reversing valve 5 to the left position;
pressure oil output by the hydraulic pump 1 is injected into a left cavity of the pulse oil cylinder 4 through the two-position four-way reversing valve 2 and fills the left cavity of the pulse oil cylinder 4 with oil; the oil entering the left cavity pushes a piston of the pulse oil cylinder 4 to move from left to right;
oil in the right cavity of the pulse oil cylinder 4 is extruded by a piston, the oil way between the pulse oil cylinder 4 and the hydraulic motor 6 is in a connected state by switching to the two-position two-way hydraulic reversing valve 5 at the left position, and the oil in the right cavity of the pulse oil cylinder 4 enters the hydraulic motor 6 through the two-position two-way hydraulic reversing valve 5 so as to push the hydraulic motor 6 to rotate by a tiny angle;
and (3) reduction process:
the valve core in the two-position four-way reversing valve 2 is switched to the right position again, pressure oil is input into the right cavity of the pulse oil cylinder 4 through the hydraulic pump 1, and the left cavity of the pulse oil cylinder 4 returns oil and is relieved in pressure; the valve core of the two-position two-way hydraulic reversing valve 5 automatically returns to the right position under the action of the spring, and the whole control system returns to the initial state of the oil charging and energy storage process;
the steps of the oil charging and energy storage process, the pulse rotation process and the reduction process are repeated for a plurality of times, and the hydraulic motor 6 is rotated to a required angle through a plurality of times of accumulation.
Furthermore, an overflow valve 7 is arranged between the hydraulic pump 1 and an oil inlet of the two-position four-way reversing valve 2, so that redundant pressure oil returns to an oil tank 8 through the overflow valve.
Further, the two-position four-way reversing valve 2 is a manual reversing valve, and a valve core of the manual reversing valve is automatically switched to the right position under the action of a spring by loosening an operating handle on the manual reversing valve.
The invention has the beneficial effects that:
the control method drives the hydraulic motor to rotate by a tiny angle each time through the cooperative control of the pulse oil cylinder, the manual reversing valve and the hydraulic reversing valve, thereby realizing the step control of the rotating angle; the hydraulic reversing valve realizes the automatic linkage control from the hydraulic pump to the pulse oil cylinder and from the pulse oil cylinder to the two sections of oil paths of the hydraulic motor, and improves the control and regulation efficiency; and a technical foundation is laid for the automatic and accurate control of the accurate guide drilling and the swing mechanism.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of the system of the present invention.
Reference numerals:
the hydraulic control system comprises a hydraulic pump 1, a two-position four-way reversing valve 2, a one-way valve 3, a pulse oil cylinder 4, a two-position two-way hydraulic reversing valve 5, a hydraulic motor 6, an overflow valve 7, an oil tank 8 and an oil pipe 9.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a hydraulic motor micro-angle step control system is provided, in which a two-position four-way directional valve 2, a one-way valve 3, a pulse oil cylinder 4 and a two-position two-way hydraulic directional valve 5 are sequentially disposed between a hydraulic pump 1 and a hydraulic motor 6; the hydraulic pump 1 is a power element of the system and provides pressure oil for each element in the system; the hydraulic motor 6 is an actuator of the rotation output. The two-position four-way reversing valve 2 is used for switching the direction of an oil inlet path of the pulse oil cylinder 4; the one-way valve 3 is used for controlling the one-way flow of an oil path between the right cavity of the pulse oil cylinder 4 and the two-position four-way reversing valve 2; the pulse oil cylinder 4 is an element for accumulating and outputting oil and is used for pushing the hydraulic motor 6 to rotate by a tiny angle, and the volume of the pulse oil cylinder 4 is matched with the tiny angle of single rotation of the hydraulic motor 6; the two-position two-way hydraulic reversing valve 5 is used for switching the on-off of an oil path between the pulse oil cylinder 4 and the hydraulic motor 6.
Specifically, the hydraulic pump 1 is connected with an oil inlet P port of a two-position four-way reversing valve 2, an oil return port T port of the two-position four-way reversing valve 2 is connected with an oil tank 8, a port B of the two-position four-way reversing valve 2 is communicated with a right cavity of a pulse oil cylinder 4 through a one-way valve 3, a port A of the two-position four-way reversing valve 2 is communicated with a left cavity of the pulse oil cylinder 4, and a right cavity of the pulse oil cylinder 4 is communicated with a hydraulic motor 6 through a two-position two-way hydraulic reversing valve 5; the control oil port of the two-position two-way hydraulic reversing valve 5 is communicated with the port A of the two-position four-way reversing valve 2 through an oil pipe 9.
The control method of the system mainly comprises the following steps:
s1, an oil-filled energy storage process:
initially, the valve cores in the two-position four-way reversing valve 2 and the two-position two-way hydraulic reversing valve 5 are both in the right position; pressure oil output by the hydraulic pump 1 sequentially passes through the two-position four-way reversing valve 2 and the one-way valve 3, then is injected into the right cavity of the pulse oil cylinder 4 and charges oil for the right cavity of the pulse oil cylinder 4, and oil entering the right cavity pushes a piston of the pulse oil cylinder 4 to move from right to left.
Oil in the left cavity of the pulse oil cylinder 4 is extruded by the piston and returns to the oil tank 8 through the two-position four-way reversing valve 2; at this time, the two-position two-way hydraulic reversing valve 5 at the right position enables the oil path between the pulse oil cylinder 4 and the hydraulic motor 6 to be in a disconnected state, and oil liquid in the right cavity of the pulse oil cylinder 4 cannot enter the hydraulic motor 6, so that the pulse oil cylinder 4 is always in an oil charging and energy storage state.
S2, a pulse rotation process:
the valve core in the two-position four-way reversing valve 2 is switched to the left position through operation, and meanwhile, pressure oil output by the hydraulic pump 1 sequentially passes through the two-position four-way reversing valve 2 and the oil pipe 9 to enter a control oil port of the two-position two-way hydraulic reversing valve 5, so that the two-position two-way hydraulic reversing valve 5 is switched to the left position under the action of the oil.
Pressure oil output by the hydraulic pump 1 is injected into a left cavity of the pulse oil cylinder 4 through the two-position four-way reversing valve 2 and fills the left cavity of the pulse oil cylinder 4 with oil; the oil entering the left cavity pushes the piston of the pulse oil cylinder 4 to move from left to right, and the oil in the right cavity of the pulse oil cylinder 4 is extruded by the piston. The two-position two-way hydraulic reversing valve 5 switched to the left position enables an oil path between the pulse oil cylinder 4 and the hydraulic motor 6 to be in a connected state, oil in the right cavity of the pulse oil cylinder 4 enters the hydraulic motor 6 through the two-position two-way hydraulic reversing valve 5, and then the hydraulic motor 6 is pushed to rotate by a small angle, namely stepping type small-angle rotation of the rotation angle is achieved.
S3, reduction process:
the valve core in the two-position four-way reversing valve 2 is switched to the right position again through operation, pressure oil is input into the right cavity of the pulse oil cylinder 4 through the hydraulic pump 1, and oil returning and pressure relief of the left cavity of the pulse oil cylinder 4 are achieved; at the moment, the valve core of the two-position two-way hydraulic reversing valve 5 automatically returns to the right position under the action of the spring, and the whole control system returns to the initial state of the oil charging and energy storing process again.
The steps of the oil charging and energy storage process, the pulse rotation process and the reduction process are repeated for a plurality of times, and the hydraulic motor 6 is rotated to a required angle through a plurality of times of accumulation.
The scheme is also provided with an overflow valve 7, and the overflow valve 7 is used for adjusting the driving force of the hydraulic motor 6; if the system pressure reaches the set value of the overflow valve, redundant oil can return to the oil tank 8 through the overflow valve 7, and thus the pressure safety of the system can be ensured. The overflow valve 7 is arranged between the hydraulic pump 1 and an oil inlet of the two-position four-way reversing valve 2.
The two-position four-way reversing valve 2 in the scheme is a manual reversing valve, and the valve core of the manual reversing valve can be controlled to be automatically switched to the right position under the action of the spring by loosening the operating handle on the manual reversing valve.
The control method drives the hydraulic motor to rotate by a tiny angle each time through the cooperative control of the pulse oil cylinder, the manual reversing valve and the hydraulic reversing valve, thereby realizing the step control of the rotating angle; the hydraulic reversing valve realizes the automatic linkage control from the hydraulic pump to the pulse oil cylinder and from the pulse oil cylinder to the two-section oil way of the hydraulic motor, thereby improving the control and regulation efficiency; and a technical foundation is laid for the automatic and accurate control of the accurate guide drilling and the swing mechanism.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (3)
1. A hydraulic motor micro-angle stepping control method is characterized by mainly comprising the following steps:
a two-position four-way reversing valve (2), a one-way valve (3), a pulse oil cylinder (4) and a two-position two-way hydraulic reversing valve (5) are sequentially arranged between the hydraulic pump (1) and the hydraulic motor (6); the hydraulic pump (1) is connected with an oil inlet of the two-position four-way reversing valve (2), an oil return port of the two-position four-way reversing valve (2) is connected with an oil tank (8), a port B of the two-position four-way reversing valve (2) is communicated with a right cavity of the pulse oil cylinder (4) through the one-way valve (3), a port A of the two-position four-way reversing valve (2) is communicated with a left cavity of the pulse oil cylinder (4), and a right cavity of the pulse oil cylinder (4) is communicated with the hydraulic motor (6) through the two-position two-way hydraulic reversing valve (5); a control oil port of the two-position two-way hydraulic reversing valve (5) is communicated with an A port of the two-position four-way reversing valve (2) through an oil pipe (9);
oil charge energy storage process:
the valve cores in the two-position four-way reversing valve (2) and the two-position two-way hydraulic reversing valve (5) are both positioned at the right position;
pressure oil output by the hydraulic pump (1) sequentially passes through the two-position four-way reversing valve (2) and the one-way valve (3), then is injected into a right cavity of the pulse oil cylinder (4) and charges the right cavity of the pulse oil cylinder (4), and oil entering the right cavity pushes a piston of the pulse oil cylinder (4) to move from right to left;
oil in the left cavity of the pulse oil cylinder (4) is extruded out and returns to the oil tank (8) through the two-position four-way reversing valve (2);
the two-position two-way hydraulic reversing valve (5) at the right position enables an oil circuit between the pulse oil cylinder (4) and the hydraulic motor (6) to be in a disconnected state, and oil liquid in the right cavity of the pulse oil cylinder (4) cannot enter the hydraulic motor (6), so that the pulse oil cylinder is always in an oil-filled energy-storage state;
the pulse rotating process:
a valve core in the two-position four-way reversing valve (2) is switched to the left position, and meanwhile, pressure oil output by the hydraulic pump (1) sequentially passes through the two-position four-way reversing valve (2) and an oil pipe (9) to enter a control oil port of the two-position two-way hydraulic reversing valve (5) so as to switch the two-position two-way hydraulic reversing valve (5) to the left position;
pressure oil output by the hydraulic pump (1) is injected into a left cavity of the pulse oil cylinder (4) through the two-position four-way reversing valve (2) and fills the left cavity of the pulse oil cylinder (4); the oil entering the left cavity pushes a piston of the pulse oil cylinder (4) to move from left to right;
oil in the right cavity of the pulse oil cylinder (4) is extruded by a piston, an oil path between the pulse oil cylinder (4) and the hydraulic motor (6) is in a connected state by switching to a left two-position two-way hydraulic reversing valve (5), and the oil in the right cavity of the pulse oil cylinder (4) enters the hydraulic motor (6) through the two-position two-way hydraulic reversing valve (5) so as to push the hydraulic motor (6) to rotate by a tiny angle;
and (3) reduction process:
the valve core in the two-position four-way reversing valve (2) is switched to the right position again, pressure oil is input into the right cavity of the pulse oil cylinder (4) through the hydraulic pump (1), and the left cavity of the pulse oil cylinder (4) returns oil and is released in pressure; the valve core of the two-position two-way hydraulic reversing valve (5) automatically returns to the right position under the action of the spring, and the whole control system returns to the initial state of the oil charging and energy storing process;
the steps of the oil charging and energy storage process, the pulse rotation process and the reduction process are repeated for a plurality of times, and the hydraulic motor (6) is rotated to a required angle through a plurality of times of accumulation.
2. The hydraulic motor low-speed step-by-step rotation control method according to claim 1, characterized in that: an overflow valve (7) is arranged between the hydraulic pump (1) and an oil inlet of the two-position four-way reversing valve (2), so that redundant pressure oil returns to an oil tank (8) through the overflow valve.
3. The hydraulic motor low-speed step-by-step rotation control method according to claim 1, characterized in that: the two-position four-way reversing valve (2) is a manual reversing valve, and a valve core of the manual reversing valve is automatically switched to the right position under the action of a spring by loosening an operating handle on the manual reversing valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210985877.5A CN115405578A (en) | 2022-08-16 | 2022-08-16 | Micro-angle stepping control method for hydraulic motor |
| PCT/CN2023/083775 WO2024036970A1 (en) | 2022-08-16 | 2023-03-24 | Micro-angle stepping control method for hydraulic motor |
| AU2023208152A AU2023208152A1 (en) | 2022-08-16 | 2023-07-27 | A method for micro-angle stepping control of hydraulic motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210985877.5A CN115405578A (en) | 2022-08-16 | 2022-08-16 | Micro-angle stepping control method for hydraulic motor |
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| Publication Number | Publication Date |
|---|---|
| CN115405578A true CN115405578A (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210985877.5A Pending CN115405578A (en) | 2022-08-16 | 2022-08-16 | Micro-angle stepping control method for hydraulic motor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN115405578A (en) |
| AU (1) | AU2023208152A1 (en) |
| WO (1) | WO2024036970A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024036970A1 (en) * | 2022-08-16 | 2024-02-22 | 中煤科工集团重庆研究院有限公司 | Micro-angle stepping control method for hydraulic motor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201206571Y (en) * | 2008-05-30 | 2009-03-11 | 湖南奥盛特重工科技有限公司 | Complex control system for main hoist and power head of rotary drill rig |
| CN102606131B (en) * | 2011-12-09 | 2015-02-25 | 中国石油集团长城钻探工程有限公司 | Hydraulically-driven top drive control system |
| CN103452149B (en) * | 2013-08-26 | 2015-07-15 | 中外合资沃得重工（中国）有限公司 | Potential energy recovery hydraulic control device for movable arm of excavator |
| CN111156217A (en) * | 2020-02-27 | 2020-05-15 | 李翔 | Hydraulic motor control system and control method for gyrator of underground drill rig |
| DE102021200099A1 (en) * | 2021-01-08 | 2022-07-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Process for controlling a hydrostatic travel drive |
| CN217873519U (en) * | 2022-08-16 | 2022-11-22 | 中煤科工集团重庆研究院有限公司 | Micro-angle stepping control valve set of hydraulic motor |
| CN115405578A (en) * | 2022-08-16 | 2022-11-29 | 中煤科工集团重庆研究院有限公司 | Micro-angle stepping control method for hydraulic motor |
-
2022
- 2022-08-16 CN CN202210985877.5A patent/CN115405578A/en active Pending
-
2023
- 2023-03-24 WO PCT/CN2023/083775 patent/WO2024036970A1/en unknown
- 2023-07-27 AU AU2023208152A patent/AU2023208152A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024036970A1 (en) * | 2022-08-16 | 2024-02-22 | 中煤科工集团重庆研究院有限公司 | Micro-angle stepping control method for hydraulic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2023208152A1 (en) | 2024-03-07 |
| WO2024036970A1 (en) | 2024-02-22 |
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