CN109114055B - Hydraulic combined supporting system for machining marine propeller blades - Google Patents
Hydraulic combined supporting system for machining marine propeller blades Download PDFInfo
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- CN109114055B CN109114055B CN201811112791.1A CN201811112791A CN109114055B CN 109114055 B CN109114055 B CN 109114055B CN 201811112791 A CN201811112791 A CN 201811112791A CN 109114055 B CN109114055 B CN 109114055B
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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
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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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic combined supporting system for machining marine propeller blades. The invention adopts a hydraulic combined control system to support the propeller blades, and provides a supporting system scheme which has relatively low manufacturing cost, simpler supporting form and high control precision. When the propeller is in a smaller size, the number of the supporting devices can be reduced by only connecting the similar two-position two-way electromagnetic reversing valve d with no external power supply, and the operation is simple. The hydraulic combined supporting system and the supporting device for processing the marine propeller blades are flexible and changeable in usability.
Description
Technical Field
The invention relates to the field of manufacturing marine propellers, relates to the field of supporting propeller machining by a hydraulic control system, and particularly relates to a combined supporting system and a combined supporting device for machining large marine propeller blades on a heavy machine tool.
Background
The marine propeller is a core component of a ship power system, and the use performance of the ship propulsion system is directly influenced by the quality of the processing quality of the marine propeller. In the processing process of the propeller blade, the propeller blade is greatly deformed under the action of cutting force, so that the cutting depth is insufficient, and the processed part has large errors in shape, size and position, therefore, a proper support system is required to be adopted for the blade to enhance the rigidity of the propeller blade, so that the errors in shape, size and position of the part caused by insufficient support are reduced, and the processing precision of the marine propeller and the dynamic performance of a ship are improved.
Aiming at the problem of processing and supporting of the propeller, a common method is to arrange a hydraulic jack or a screw jack at the edge of the blade, the supporting method has high requirements on operators, the process of reasonably arranging the jacks wastes time and labor, and the other supporting mode is a special supporting clamp, but the supporting mode can only be used for the propeller with a specific model and a specific size, and has high manufacturing cost, long period and low universality. Therefore, the supporting system and the supporting device which are relatively low in manufacturing cost, simple in supporting form and high in control precision are particularly important.
Patent CN102886699A discloses a supporting device and a supporting method for processing propeller blades, the actual supporting manner of the patent is to divide the number of blade areas and supporting points according to the size of the propeller blades, and then the supporting device is placed to realize the supporting, however, the device does not mention the mutual connection and function between the supporting devices. Therefore, it is also very necessary to design a hydraulic device for combined support of marine propellers after optimal determination of the propeller support point position.
Disclosure of Invention
The invention provides a hydraulic combined supporting system and a hydraulic combined supporting device, which can be used for processing blades of a marine propeller, and designs a supporting system and a hydraulic combined supporting device which have simple supporting forms, are easy to control and have high control precision, and in order to achieve the purpose, the hydraulic combined supporting system and the hydraulic combined supporting device adopt the technical scheme that:
the technical scheme adopted by the invention is a hydraulic combined supporting system for processing marine propeller blades. The system comprises a hydraulic power element, a hydraulic control circuit, a hydraulic control element and a hydraulic actuator. The hydraulic power element is a fixed displacement pump (2), and the hydraulic control element comprises a three-position four-way electromagnetic directional valve (3), a two-position two-way electromagnetic directional valve a (4), a two-position two-way electromagnetic directional valve b (9), a two-position two-way electromagnetic directional valve c (14), a two-position two-way electromagnetic directional valve d (19), a two-position two-way electromagnetic directional valve e (25), a two-position two-way electromagnetic directional valve f (30), a one-way valve a (5), a one-way valve b (10), a one-way valve c (15), a one-way valve d (20), a one-way valve e (26), a one-way valve f (31), a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28), a travel switch f (32), a safety valve (24), a back pressure valve a (8), a back pressure valve, A back pressure valve e (28), a back pressure valve f (34), a hydraulic actuator a (6), a hydraulic actuator b (11), a hydraulic actuator c (16), a hydraulic actuator d (21), a hydraulic actuator e (27) and a hydraulic actuator f (32); the hydraulic actuators a (6), b (11), c (16), d (21), e (27) and f (32) comprise hydraulic cylinders and piston support rods. The hydraulic combined supporting device comprises four (adjustable in quantity) piston supporting rods and a part mounting structure, when a supporting point is selected, a first supporting device (B1), a second supporting device (B2), a third supporting device (B3) and a fourth supporting device (B4) are placed on a machine tool turntable (A), the four piston supporting rods are controlled by a hydraulic system loop to reach supporting positions accordingly, supporting of marine propeller blades (C) is completed, and the processing quality of the propeller blades is improved.
The method specifically comprises the following steps: the constant delivery pump (2) provides power for the system; the three-position four-way electromagnetic directional valve (3) realizes support loading (left position connection), support keeping (middle position connection) and support unloading (right path connection); the safety valve (24) is used for adjusting the system pressure and protecting the system; the two-position two-way electromagnetic directional valve a (4), the two-position two-way electromagnetic directional valve b (9), the two-position two-way electromagnetic directional valve c (14), the two-position two-way electromagnetic directional valve d (19), the two-position two-way electromagnetic directional valve e (25) and the two-position two-way electromagnetic directional valve f (30) determine whether to be switched on or not according to a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28) and a travel switch f (32), and the control is convenient; the three-position four-way electromagnetic directional control valve comprises a one-way valve a (5), a one-way valve b (10), a one-way valve c (15), a one-way valve d (20), a one-way valve e (26) and a one-way valve f (31) which ensure one-way circulation of an oil way, and a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28) and a travel switch f (32) which supply electric signals to a three-position four-way electromagnetic directional valve (3), a two-position two-way electromagnetic directional valve a (4), a two-position two-way electromagnetic directional valve b (9), a two-position two-way electromagnetic directional valve c (14), a two-position two-way electromagnetic directional valve d (. The backpressure valve a (8), the backpressure valve b (13), the backpressure valve c (18), the backpressure valve d (23), the backpressure valve e (28) and the backpressure valve f (34) are used for ensuring the pressure required by an oil path when the pressure facing the oil path or a container is unstable, so that a hydraulic pump works normally; the number of the support rods is controlled by a tiny unit of the hydraulic control circuit.
The hydraulic actuator a (6), the hydraulic actuator b (11), the hydraulic actuator c (16), the hydraulic actuator d (21), the hydraulic actuator e (27) and the hydraulic actuator f (32) are a hydraulic cylinder and a piston rod. The hydraulic actuator a (6), the hydraulic actuator b (11), the hydraulic actuator c (16), the hydraulic actuator d (21), the hydraulic actuator e (27) and the hydraulic actuator f (32) are completely the same in structure, the piston rod comprises a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28) and a travel switch f (32), and when the piston rod is accurately supported, signals of the travel switches are triggered to provide signals for a hydraulic combined control system, so that accurate control is realized.
The hydraulic support rod hydraulic combination system and the hydraulic support rod hydraulic combination device are not limited to four rods, and the number of support points can be specifically adjusted according to the size of the propeller. The mode that the strong point increases does: the supporting points for the processing of the propeller can be increased by only adding the same power executing mechanism d (21), the one-way valve d (20), the travel switch d (22), the two-position two-way electromagnetic reversing valve d (19) and the back pressure valve d (23). The method for reducing the supporting points comprises two methods, one method is to reduce design control design elements of a hydraulic combined system and a hydraulic device of the hydraulic supporting rod, and the other method is to disconnect an external power supply from the two-position two-way electromagnetic directional valve d (19) to reduce the number of the supporting points.
The tiny units of the hydraulic control circuit comprise a back pressure valve b (13), a check valve b (10), a two-position two-way electromagnetic directional valve b (9), a power executing mechanism b (11) and a travel switch b (12), and the tiny units of the hydraulic control circuit are increased or decreased to achieve the quantity control of the supporting rods.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a hydraulic combined control system to support the propeller blades, and provides a supporting system scheme with relatively low manufacturing cost, simpler supporting form and high control precision.
(2) When the propeller is in a larger size, the number of the supporting devices (figure 2 and figure 3) can be increased by adding the power executing mechanism d (21), the one-way valve d (20), the travel switch d (22), the two-position two-way electromagnetic reversing valve d (19) and the back pressure valve d (23) which are similar to a hydraulic system, and when the propeller is in a smaller size, the number of the supporting systems can be reduced by only connecting the similar two-position two-way electromagnetic reversing valve d (19) with no external power supply, so that the operation is simple. The hydraulic combined supporting system and the supporting device for processing the marine propeller blades are flexible and changeable in usability.
Drawings
Fig. 1 shows a hydraulic combination system with four support rods.
Fig. 2 is a hydraulic combination system of five support rods.
Fig. 3 is a hydraulic combination system of six support rods.
Fig. 4 is a general structure diagram of a four-bar hydraulic combined supporting system device for processing propeller blades.
FIG. 5 is a flow chart of the use of the hydraulic combined support system and support device for propeller blade machining.
In the figure: 1-an oil tank, 2-a hydraulic pump, 3-a three-position four-way electromagnetic directional valve, 4-a two-position two-way electromagnetic directional valve a, 5-a-way valve a, 6-a hydraulic power executing mechanism a, 7-a travel switch a, 8-a backpressure valve a, 9-a two-position two-way electromagnetic directional valve b, 10-a-way valve b, 11-a hydraulic power executing mechanism b, 12-a travel switch b, 13-a backpressure valve b, 14-a two-position two-way electromagnetic directional valve c, 15-a one-way valve c, 16-a hydraulic power executing mechanism c, 17-a travel switch c, 18-a backpressure valve c, 19-a two-position two-way electromagnetic directional valve d, 20-a one-way valve d, 21-a hydraulic power executing mechanism d, 22-a travel switch d, 23-a backpressure valve, 24-safety valve, 25-two-position two-way electromagnetic directional valve e, 26-check valve e, 27-hydraulic power actuator e, 28-travel switch e, 29-backpressure valve e, 30-two-position two-way electromagnetic directional valve f, 31-check valve f, 32-hydraulic power actuator f, 33-travel switch f, 34-backpressure valve f, A-machine turret, B1-first supporting device, B2-second supporting device, B3-third supporting device, B4-fourth supporting device and C-marine propeller blade.
Detailed Description
The invention provides a hydraulic combined supporting system and a hydraulic combined supporting device for a marine propeller, which comprise a supporting loading mode and a supporting unloading mode, and the specific implementation mode is further described by combining the attached drawings.
And selecting the correct number of supporting points and the positions of the supporting points according to the size and the processing requirement of the propeller blades.
Supporting the loading mode. Taking the four-bar hydraulic combined supporting system and the supporting device shown in fig. 1 as an example, firstly, the positions of four supporting points of a propeller blade are determined, and a first supporting device (B1), a second supporting device (B2), a third supporting device (B3) and a fourth supporting device (B4) are fixed in sequence, so that when a piston rod is accurately positioned, a hydraulic pump (2) is started, a three-position four-way electromagnetic directional valve (3) is switched on at the left position, an oil path is connected to a two-position two-way electromagnetic directional valve a (4) and a one-way valve a (5), a power executing mechanism a (6) extends out, a travel switch a (7) is triggered, then a two-position two-way electromagnetic directional valve B (9) is switched on at the right position, a two-position two-way electromagnetic directional valve a (4) is switched off at the right position, an oil path is connected to a one-way valve B (10), a power executing mechanism B (11) extends out, when a travel switch B (12) is triggered, a two-position, the oil way is connected with the one-way valve c (15), the power executing mechanism c (16) extends out, when the travel switch c (17) is triggered, the right position of the two-position two-way electromagnetic directional valve d (19) is connected, the left movement of the two-position two-way electromagnetic directional valve c (14) is closed, the oil way is connected with the one-way valve d (20), the power executing mechanism d (21) extends out, the travel switch d (22) is triggered, the left movement of the two-position two-way electromagnetic directional valve d (19) is closed, the right movement of the three-position four-way electromagnetic directional valve (3) is closed to the middle position, the oil way is maintained.
Supporting the unloaded mode. Taking the four-bar hydraulic combined supporting system and the supporting device shown in fig. 1 as an example, after the processing of the blade is completed, the hydraulic pump (2) is started, the right position of the three-position four-way electromagnetic directional valve a (3) is communicated, the oil path 1 retracts through the power executing mechanism (6), the hydraulic oil flows through the backpressure valve a (8) and returns to the oil tank (1), the oil path 2 retracts through the power executing mechanism (11), the hydraulic oil flows through the backpressure valve B (13) and returns to the oil tank (1), the oil path 3 retracts through the power executing mechanism (17), the hydraulic oil flows through the backpressure valve c (18) and returns to the oil tank (1), the oil path 4 retracts through the power executing mechanism (21), the hydraulic oil flows through the backpressure valve d (23) and returns to the oil tank (1), and after the four supporting devices retract, the first supporting device (B1), the second supporting device (B2), the third supporting device (B3) are, A fourth supporting means (B4).
The hydraulic combination system and the hydraulic combination device of the four support rods are not limited to four support rods, and support point positions for processing the propeller can be increased by only adding the same power executing mechanism d (21), the one-way valve d (20), the travel switch d (22), the two-position two-way electromagnetic reversing valve d (19) and the back pressure valve d (23). The method for reducing the supporting points comprises two methods, one is to reduce design control design elements of a hydraulic combined system and a hydraulic device of the hydraulic supporting rod, and the other is to disconnect an external power supply from the two-position two-way electromagnetic directional valve d (19), so that the number of the supporting points can be reduced.
Claims (3)
1. A hydraulic pressure combination braced system for marine propeller blade processing which characterized in that: the system comprises a hydraulic power element, a hydraulic control circuit, a hydraulic control element and a hydraulic actuator; the hydraulic power element is a fixed displacement pump (2), and the hydraulic control element comprises a three-position four-way electromagnetic directional valve (3), a two-position two-way electromagnetic directional valve a (4), a two-position two-way electromagnetic directional valve b (9), a two-position two-way electromagnetic directional valve c (14), a two-position two-way electromagnetic directional valve d (19), a two-position two-way electromagnetic directional valve e (25), a two-position two-way electromagnetic directional valve f (30), a one-way valve a (5), a one-way valve b (10), a one-way valve c (15), a one-way valve d (20), a one-way valve e (26), a one-way valve f (31), a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28), a travel switch f (33), a safety valve (24), a back pressure valve a (8), a back pressure valve, A back pressure valve e (29), a back pressure valve f (34), a hydraulic actuator a (6), a hydraulic actuator b (11), a hydraulic actuator c (16), a hydraulic actuator d (21), a hydraulic actuator e (27) and a hydraulic actuator f (32); the hydraulic actuator a (6), the hydraulic actuator b (11), the hydraulic actuator c (16), the hydraulic actuator d (21), the hydraulic actuator e (27) and the hydraulic actuator f (32) comprise a hydraulic cylinder and a piston supporting rod; the hydraulic combined supporting device comprises four piston supporting rods and a part mounting structure, after a supporting point is selected, a first supporting device (B1), a second supporting device (B2), a third supporting device (B3) and a fourth supporting device (B4) are placed on a machine tool turntable (A), the four piston supporting rods sequentially reach supporting positions by controlling a loop of a hydraulic system, supporting of marine propeller blades (C) is completed, and the processing quality of the propeller blades is improved;
the method specifically comprises the following steps: the constant delivery pump (2) provides power for the system; the three-position four-way electromagnetic directional valve (3) realizes supporting loading, supporting keeping and supporting unloading; the safety valve (24) is used for adjusting the system pressure and protecting the system; the two-position two-way electromagnetic directional valve a (4), the two-position two-way electromagnetic directional valve b (9), the two-position two-way electromagnetic directional valve c (14), the two-position two-way electromagnetic directional valve d (19), the two-position two-way electromagnetic directional valve e (25) and the two-position two-way electromagnetic directional valve f (30) determine whether to be switched on or not according to a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28) and a travel switch f (33), and the control is convenient; the three-position four-way electromagnetic reversing valve comprises a one-way valve a (5), a one-way valve b (10), a one-way valve c (15), a one-way valve d (20), a one-way valve e (26) and a one-way valve f (31), wherein the one-way circulation of an oil way is guaranteed, and the travel switch a (7), the travel switch b (12), the travel switch c (17), the travel switch d (22), the travel switch e (28) and the travel switch f (33) supply electric signals to a three-position four-way electromagnetic reversing valve (3), a two-position two-way electromagnetic reversing valve a (4), a two-position two-way electromagnetic reversing valve b (9), a two-position two-way electromagnetic reversing valve c (14), a two-position two-way electromagnetic reversing valve d (; the backpressure valve a (8), the backpressure valve b (13), the backpressure valve c (18), the backpressure valve d (23), the backpressure valve e (29) and the backpressure valve f (34) are used for ensuring the pressure required by an oil path when the pressure facing the oil path or a container is unstable, so that a hydraulic pump works normally; the number of the supporting rods is controlled by a tiny unit of the hydraulic control loop;
the hydraulic actuator a (6), the hydraulic actuator b (11), the hydraulic actuator c (16), the hydraulic actuator d (21), the hydraulic actuator e (27) and the hydraulic actuator f (32) are hydraulic cylinders and piston rods; the hydraulic actuator a (6), the hydraulic actuator b (11), the hydraulic actuator c (16), the hydraulic actuator d (21), the hydraulic actuator e (27) and the hydraulic actuator f (32) are completely the same in structure, the piston rod comprises a travel switch a (7), a travel switch b (12), a travel switch c (17), a travel switch d (22), a travel switch e (28) and a travel switch f (33), and when the piston rod supports accurately, signals of the travel switches are triggered to provide signals for a hydraulic combined control system, so that accurate control is realized.
2. The hydraulic combined support system for machining marine propeller blades as claimed in claim 1, wherein: the hydraulic combined supporting device is not limited to four rods, and the number of supporting points is specifically adjusted according to the size of the propeller; the mode that the strong point increases does: the supporting point positions of the propeller processing can be increased by only adding the same hydraulic actuating element d (21), the one-way valve d (20), the travel switch d (22), the two-position two-way electromagnetic directional valve d (19) and the back pressure valve d (23); the method for reducing the supporting points comprises two methods, one method is to reduce design control design elements of a hydraulic combined system and a hydraulic device of the hydraulic supporting rod, and the other method is to disconnect an external power supply from the two-position two-way electromagnetic directional valve d (19) to reduce the number of the supporting points.
3. The hydraulic combined support system for machining marine propeller blades as claimed in claim 1, wherein: the tiny units of the hydraulic control circuit comprise a back pressure valve b (13), a check valve b (10), a two-position two-way electromagnetic directional valve b (9), a hydraulic execution element b (11) and a travel switch b (12), and the tiny units of the hydraulic control circuit are increased or decreased to achieve the quantity control of the supporting rods.
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| CN201811112791.1A CN109114055B (en) | 2018-09-25 | 2018-09-25 | Hydraulic combined supporting system for machining marine propeller blades |
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| CN201811112791.1A CN109114055B (en) | 2018-09-25 | 2018-09-25 | Hydraulic combined supporting system for machining marine propeller blades |
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| CN101318538B (en) * | 2008-05-26 | 2010-06-23 | 中船第九设计研究院工程有限公司 | Hydraulic control system and apparatus for split positioning of ship body |
| CN102173367B (en) * | 2011-03-04 | 2013-03-20 | 上海交通大学 | Stern hydraulic rudder installing walking trolley |
| US8910474B2 (en) * | 2011-10-21 | 2014-12-16 | Caterpillar Inc. | Hydraulic system |
| CN203877758U (en) * | 2014-04-24 | 2014-10-15 | 常州瑞阳液压成套设备有限公司 | Pushing system of rail clamping device |
| CN105179343B (en) * | 2015-10-27 | 2017-03-22 | 中国矿业大学 | Multi-cylinder synchronous energy-saving efficient hydraulic lifting system and method |
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