CN112032130A - Hydraulic leveling system for dock wall vehicle and control method thereof - Google Patents
Hydraulic leveling system for dock wall vehicle and control method thereof Download PDFInfo
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- CN112032130A CN112032130A CN202010653995.7A CN202010653995A CN112032130A CN 112032130 A CN112032130 A CN 112032130A CN 202010653995 A CN202010653995 A CN 202010653995A CN 112032130 A CN112032130 A CN 112032130A
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- oil cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the field of ship maintenance, and particularly discloses a dock wall vehicle hydraulic leveling system and a control method thereof. The leveling system eliminates the phenomenon that the working bucket of the dock wall vehicle inclines due to the angle change caused in the amplitude changing process of the arm support, ensures that the working bucket is always in a horizontal position in the amplitude changing process of the arm support, ensures no damage of an external load impact force to a product, and ensures the safety of the operation of workers.
Description
Technical Field
The invention relates to the field of ship maintenance of ships or marine products on dry docks or floating docks, in particular to a dock wall vehicle hydraulic leveling system and a control method thereof.
Background
Manual work has long prevented the improvement of the efficiency of the dock repair of a ship and the shortening of the dock repair cycle. In the ship dock repair project, rust removal and paint occupy important positions, and the quality and the period of the dock repair are directly influenced by the efficiency and the quality of the rust removal and the paint. In recent years, high-pressure water cleaning and rust removing technology and high-pressure paint spraying new technology are widely used in ship dock repair engineering, and dock maintenance equipment has higher and higher requirements on operation safety, automation level, reduction of labor intensity of workers, operation efficiency and the like.
At present, dock wall vehicles are widely applied in two types, wherein one working bucket adopts a mechanical leveling mechanism, and the other working bucket adopts a manual leveling system. The dock wall vehicle with the working bucket adopting the mechanical leveling mechanism is suitable for short arm support strokes and is not suitable for long arm support strokes and telescopic arm structures, and the operation range is limited. The working bucket adopts a manual leveling system, the inclination angle of the working bucket cannot be accurately adjusted, only rough adjustment can be observed, multiple adjustments can be needed in the leveling process to adjust the working bucket in place, and the working bucket is abnormally dangerous under the working condition that the working bucket is adjusted in angle by workers on the working bucket. And the leveling system has no automatic accurate adjustment function, so that great risk is brought to the working process of workers.
Disclosure of Invention
The invention aims to provide a hydraulic leveling system of a dock wall vehicle and a control method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a hydraulic leveling system of a dock wall vehicle comprises a leveling control system, and a first oil cylinder, a second oil cylinder, a hydraulic one-way valve, an explosion-proof valve and a pump station which are connected with the leveling control system, wherein the first oil cylinder is arranged between a working platform and the root of an arm support, the second oil cylinder is arranged between the working platform and the bottom of a working hopper, rod cavities of the first oil cylinder and the second oil cylinder are connected with rod cavities, a rodless cavity is connected with a rodless cavity, and the explosion-proof valve is arranged on each of the first oil cylinder and the second oil cylinder; the pump station, the electromagnetic directional valve and the hydraulic one-way valve are all arranged on the working platform, a pressure oil port P and an oil return oil port T of the electromagnetic directional valve are respectively communicated with an outlet P of the pump station and an oil tank interface T, and two working oil ports a and b of the electromagnetic directional valve are respectively communicated with working cavities of the first oil cylinder and the second oil cylinder.
Preferably, two oil inlets of the hydraulic one-way valve are communicated with the working oil ports a and b of the electromagnetic directional valve, an oil outlet of the hydraulic one-way valve is communicated with a speed regulating valve, and the speed regulating valve is respectively communicated with a first electromagnetic ball valve and a second electromagnetic ball valve.
Preferably, displacement sensors are arranged in the first oil cylinder and the second oil cylinder, and the displacement sensors are connected with the leveling control system.
The leveling control method of the dock wall vehicle hydraulic leveling system comprises the following steps: when the dock wall vehicle is used for derusting and paint replenishing, workers are transported to an operation position according to working condition requirements, and in the amplitude variation process of the arm support, the first oil cylinder and the second oil cylinder automatically adjust the extending state of a piston rod of the oil cylinder according to different amplitude variation angles of the arm support, so that the working bucket is always kept in a horizontal state.
Preferably, in the process of changing the amplitude of the boom, the extending actions of the first oil cylinder and the second oil cylinder specifically comprise the following steps: step S1: the first oil cylinder changes amplitude along with the arm support, and oil of the first oil cylinder is communicated with one another through the first electromagnetic ball valve and the second electromagnetic ball valve under the function that the hydraulic one-way valve locks an oil way; step S2: the second oil cylinder can automatically extend and retract a piston rod according to the amplitude of the arm support, so that the working bucket is kept at a horizontal position all the time.
Preferably, when the adjusting control system needs to supplement oil, the distance to be adjusted of the piston rod of the second oil cylinder is determined according to the reading of the displacement sensor arranged in the first oil cylinder and the reading of the displacement sensor arranged in the second oil cylinder, data are input on a control panel of the adjusting control system, the electromagnetic ball valve is powered on and closed, the electromagnetic directional valve is powered on and opened, after the piston rod of the second oil cylinder is in place, the electromagnetic directional valve is powered off and automatically closed, the electromagnetic ball valve is powered off and automatically opened, the oil cylinder is adjusted in place at the moment, and the working bucket is in a horizontal state.
Compared with the prior art, the invention has the beneficial effects that:
the leveling system disclosed by the invention comprises a speed regulating valve, a displacement sensor, an explosion-proof valve, an electromagnetic ball valve, an electromagnetic reversing valve and the like, eliminates the phenomenon that the working bucket of the dock wall vehicle inclines due to angle change caused in the amplitude changing process of the arm support, ensures that the working bucket is always in a horizontal position in the amplitude changing process of the arm support, ensures that the external impact force does not damage products, and ensures the operation safety of workers. The ship dock maintenance system has the advantages of convenience in control, accurate load adjustment, high automation degree, safety in operation and the like, and greatly improves the working efficiency and the operation safety of ship dock maintenance.
Drawings
FIG. 1 is a schematic view of the assembled connection relationship of the present invention.
In the figure: 1. a pump station; 2. an electromagnetic directional valve; 3. a hydraulic check valve; 4. a speed regulating valve; 5. a first electromagnetic ball valve; 6. a second electromagnetic ball valve; 7. an explosion-proof valve; 8. a first cylinder; 9. a second cylinder; 10. and a displacement sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a technical solution: a hydraulic leveling system of a dock wall vehicle comprises a leveling control system, and a first oil cylinder 8, a second oil cylinder 9, a hydraulic one-way valve 3, an explosion-proof valve 7 and a pump station 1 which are connected with the leveling control system, wherein the first oil cylinder 8 is arranged between a working platform and the root of an arm support, the second oil cylinder 9 is arranged between the working platform and the bottom of a working hopper, rod cavities of the first oil cylinder 8 and the second oil cylinder 9 are connected with rod cavities, the rodless cavities are connected with rodless cavities, and the explosion-proof valves 7 are arranged on the first oil cylinder 8 and the second oil cylinder 9; the pump station 1, the electromagnetic directional valve 2 and the hydraulic one-way valve 3 are all arranged on the working platform, a pressure oil port P and an oil return oil port T of the electromagnetic directional valve 2 are respectively communicated with an outlet P and an oil tank interface T of the pump station 1, and two working oil ports a and b of the electromagnetic directional valve 2 are respectively communicated with working cavities of the first oil cylinder 8 and the second oil cylinder 9.
In this embodiment, two oil inlets of the hydraulic check valve 3 are communicated with the working oil ports a and b of the electromagnetic directional valve 2, an oil outlet of the hydraulic check valve 3 is communicated with the speed regulating valve 4, and the speed regulating valve 4 is respectively communicated with the first electromagnetic ball valve 5 and the second electromagnetic ball valve 6.
In this embodiment, the first electromagnetic ball valve 5 and the second electromagnetic ball valve 6 are both connected with an explosion-proof valve 7, and the two explosion-proof valves 7 are respectively communicated with the working cavities of the first oil cylinder 8 and the second oil cylinder 9.
In this embodiment, displacement sensors 10 are disposed in the first oil cylinder 8 and the second oil cylinder 9, and the displacement sensors 10 are connected to the leveling control system.
The leveling control method of the dock wall vehicle hydraulic leveling system comprises the following steps: when the dock wall vehicle is used for derusting and paint replenishing, workers are transported to an operation position according to working condition requirements, and in the amplitude variation process of the arm support, the first oil cylinder 8 and the second oil cylinder 9 automatically adjust the extending state of a piston rod of the oil cylinder according to different amplitude variation angles of the arm support, so that the working bucket is always kept in a horizontal state.
In this embodiment, in the process of changing the amplitude of the boom, the extending actions of the first oil cylinder 8 and the second oil cylinder 9 specifically include the steps of: step S1: the first oil cylinder 8 changes the amplitude along with the arm support, and under the function that the hydraulic one-way valve 3 locks an oil way, oil of the first oil cylinder 8 is communicated with the oil through the first electromagnetic ball valve 5 and the second electromagnetic ball valve 6; step S2: the second oil cylinder 9 can automatically extend and retract a piston rod according to the amplitude of the arm support, so that the working bucket is kept at a horizontal position all the time.
In this embodiment, when the adjustment control system needs to replenish oil, the distance to be adjusted of the piston rod 9 of the second oil cylinder is determined according to the reading of the displacement sensor 10 installed in the first oil cylinder 8 and the reading of the displacement sensor 10 installed in the second oil cylinder 9, data is input on a console panel of the adjustment control system, the electromagnetic ball valve is powered on and closed, the electromagnetic directional valve 2 is powered on and opened, after the piston rod of the second oil cylinder 9 is in place, the electromagnetic directional valve 2 is powered off and automatically closed, the electromagnetic ball valve is powered off and automatically opened, at this time, the oil cylinder is adjusted in place, and the working bucket is in a horizontal state.
The leveling system disclosed by the invention comprises a speed regulating valve 4, a displacement sensor 10, an explosion-proof valve 7, an electromagnetic ball valve, an electromagnetic reversing valve 2 and the like, eliminates the phenomenon that a dock wall vehicle working bucket inclines due to angle change caused in the amplitude changing process of an arm support, ensures that the working bucket is always in a horizontal position in the amplitude changing process of the arm support, ensures that the external load impact force does not damage products, and ensures the safety of the operation of workers. The ship dock maintenance system has the advantages of convenience in control, accurate load adjustment, high automation degree, safety in operation and the like, and greatly improves the working efficiency and the operation safety of ship dock maintenance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A hydraulic leveling system of a dock wall vehicle comprises a leveling control system, and a first oil cylinder (8), a second oil cylinder (9), a hydraulic one-way valve (3), an explosion-proof valve (7) and a pump station (1) which are connected with the leveling control system, and is characterized in that the first oil cylinder (8) is installed between a working platform and the root of an arm support, the second oil cylinder (9) is installed between the working platform and the bottom of a working hopper, rod cavities of the first oil cylinder (8) and the second oil cylinder (9) are connected with rod cavities, the rodless cavities are connected with rodless cavities, and the explosion-proof valves (7) are arranged on the first oil cylinder (8) and the second oil cylinder (9); on pump station (1), solenoid directional valve (2), hydraulic pressure check valve (3) all located work platform, the pressure hydraulic fluid port P and the oil return hydraulic fluid port T of solenoid directional valve (2) communicate with the pump of pump station (1) export P and oil tank interface T respectively, two work hydraulic fluid ports a of solenoid directional valve (2), b are used for respectively communicating with the working chamber of first hydro-cylinder (8), second hydro-cylinder (9).
2. The hydraulic leveling system for the dock wall vehicle according to claim 1, wherein two oil inlets of the hydraulic check valve (3) are communicated with working oil ports a and b of the electromagnetic directional valve (2), an oil outlet of the hydraulic check valve (3) is communicated with a speed regulating valve (4), and the speed regulating valve (4) is respectively communicated with a first electromagnetic ball valve (5) and a second electromagnetic ball valve (6).
3. The hydraulic leveling system for the dock wall vehicle according to claim 1, wherein the first electromagnetic ball valve (5) and the second electromagnetic ball valve (6) are both connected with an explosion-proof valve (7), and the two explosion-proof valves (7) are respectively communicated with working cavities of a first oil cylinder (8) and a second oil cylinder (9).
4. The hydraulic leveling system for the dock wall vehicle according to claim 1, wherein displacement sensors (10) are arranged in the first cylinder (8) and the second cylinder (9), and the displacement sensors (10) are connected with a leveling control system.
5. The control method of the hydraulic leveling system of the dock wall vehicle as claimed in any one of claims 1 to 4, wherein when the dock wall vehicle is used for rust removal and paint replenishment, workers are transported to an operation position according to working condition requirements, and in the amplitude variation process of the boom, the first cylinder (8) and the second cylinder (9) automatically adjust the extending state of the piston rods of the cylinders according to different amplitude variation angles of the boom, so that the working bucket is always kept in a horizontal state.
6. The control method of the hydraulic leveling system of the dock wall vehicle according to claim 5, wherein the extending actions of the first cylinder (8) and the second cylinder (9) in the process of arm frame amplitude variation specifically comprise the following steps: step S1: the first oil cylinder (8) changes amplitude along with the arm support, and under the function that the hydraulic one-way valve (3) locks an oil way, oil of the first oil cylinder (8) is communicated with the oil through the first electromagnetic ball valve (5) and the second electromagnetic ball valve (6); step S2: the second oil cylinder (9) can automatically extend and retract a piston rod according to the amplitude of the arm support, so that the working bucket is kept at a horizontal position all the time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342901 | 2020-04-27 | ||
| CN2020103429014 | 2020-04-27 |
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| CN112032130A true CN112032130A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010653995.7A Pending CN112032130A (en) | 2020-04-27 | 2020-07-08 | Hydraulic leveling system for dock wall vehicle and control method thereof |
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| CN (1) | CN112032130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814961A (en) * | 2021-01-15 | 2021-05-18 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
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2020
- 2020-07-08 CN CN202010653995.7A patent/CN112032130A/en active Pending
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| CN202219988U (en) * | 2011-09-02 | 2012-05-16 | 大连力科技术工程有限公司 | Automatic leveling hydraulic device of cab of bucket wheel machine |
| CN103708376A (en) * | 2013-12-17 | 2014-04-09 | 天津大学 | Control structure for large-displacement synchronous jacking of large-scale deck pieces |
| CN107061397A (en) * | 2017-05-12 | 2017-08-18 | 重庆迈威重工机械有限公司 | A kind of automatic leveling down-the-hole drill and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814961A (en) * | 2021-01-15 | 2021-05-18 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
| CN112814961B (en) * | 2021-01-15 | 2023-05-30 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
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Application publication date: 20201204 |