Depth-keeping directional control device for ship wake flow model

Abstract

The invention discloses a depth-keeping directional control device for a ship wake flow model, and belongs to the technical field of ship wake flow tests, the depth-keeping directional control device comprises vertical frames mounted at two ends in an experimental pool, a guide rail is arranged between the vertical frames, and the ship model sails between the two vertical frames through the guide rail; a lifting mechanism for controlling the depth of the guide rail in the experiment pool is further installed on the vertical frame, the guide rail comprises transmission wheels and guide cables, the guide cables are in a closed ring shape and are connected to the transmission wheels at the two ends in a sleeving mode to form an upper guide rail and a lower guide rail, and sliding connecting frames are installed on the two sides of the ship model; the sliding connecting frame on each side is connected with the upper guide rail and the lower guide rail in a sliding mode, and after the sliding connecting frames are connected with the lower guide rails, the lower guide rails are pushed to incline in the direction away from the upper guide rails. According to the invention, through the height-adjustable guide rail, the ship model is effectively controlled to sail in a fixed-depth and directional manner.

Description

Technical Field

[0001] The invention relates to the technical field of ship wake test, and in particular to a ship wake model fixed depth and orientation control device. Background Art

[0002] The ship wake scale model test is to study the wake characteristics of the ship when it is sailing and its impact on the surrounding environment through simulation or actual testing. It is also one of the key means to obtain the wake characteristics of the ship. In order to ensure that the test results are consistent with the actual operating conditions of the ship and the test data have a good guiding value for the design of the actual ship, whether the wake model can sail according to the predetermined depth and direction is particularly important to the test quality.

[0003] In order to ensure that the ship model can travel at a stable depth and direction during simulation, it is generally achieved by setting up some driving tracks. However, traditional rigid tracks have high production costs, cumbersome layout, and low flexibility. The use of flexible tracks, such as cables and other means of towing ship models, can reduce construction costs, but the straightness of the tracks cannot be guaranteed during long-distance guidance. Therefore, the existing control of ship models cannot reasonably combine the advantages of the two tracks for use during fixed-depth and directional driving. Summary of the invention

[0004] The present invention aims to solve the problem that the traditional control of ship depth-fixing and directional driving is not economical and practical, and to provide a ship wake model depth-fixing and directional control device, which has the advantages of low deployment cost, high track straightness, and convenient and quick use.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A ship wake model fixed depth and directional control device comprises vertical frames installed at both ends of an experimental pool, a guide track is arranged between the vertical frames, and the ship model is used to navigate between the two vertical frames through the guide track, and a lifting mechanism for controlling the guide track in the depth of the experimental pool is also installed on the vertical frame, and the guide track comprises a transmission wheel and a cable guide rope, and the cable guide rope is a closed ring sleeve on the transmission wheels at both ends to form an upper guide rail and a lower guide rail, and sliding connecting frames are installed on both sides of the ship model, and the sliding connecting frames on each side are slidably connected to the upper guide rail and the lower guide rail, and after the sliding connecting frames are connected to the lower guide rail, the lower guide rail is pushed to tilt in a direction away from the upper guide rail.

[0007] Preferably, the sliding connection frame includes an upper slide frame and a lower slide frame fixed on the mounting plate, the upper slide frame is fixed on the adjustment seat, a slide groove is provided on the mounting plate, the adjustment seat is slidably connected to the slide groove, and an adjusting bolt is also installed on the top of the adjustment seat for controlling the up and down movement of the adjustment seat.

[0008] Preferably, a sliding wheel is installed on the lower carriage, and the sliding wheel extends downward from the lower carriage to slide in contact with the lower guide rail.

[0009] Preferably, a tensioning mechanism is also installed at one end of the guide rail, and the tensioning mechanism includes a tensioning cylinder and a movable base. The transmission wheel is installed on the movable base and is pushed by the tensioning cylinder to move in a direction away from the other opposite transmission wheel.

[0010] Preferably, the lifting mechanism includes a lifting frame and a traction rope, the guide track is installed on the lifting frame, the bottom end of the traction rope is connected to the lifting frame, and the top end passes through a plurality of fixed pulleys to connect to the winding drum, and the winding drum is driven by the lifting motor.

[0011] Preferably, the lifting frame is slidably connected to the vertical frame via a connecting plate, a plurality of positioning holes are provided on the vertical frame, and fixing pins are installed on the connecting plate, which are fixed to the positioning holes via the fixing pins.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By adopting a guide track that can be raised and lowered and controlled, the ship model can travel on the guide track with a certain water depth and direction, which is conducive to ensuring the stability of the wake experiment. The guide track is implemented by a cable guide rope, which saves costs and facilitates track layout during long-distance navigation. The upper and lower guide rails of the present invention are composed of a closed ring cable guide rope, so that the sliding connecting frame can slide and connect the two guide rails, which effectively shares the weight of the ship model and enhances the service life of the guide track. When the sliding connecting frame is connected to the lower guide rail, it pushes the lower guide rail to tilt in the direction away from the upper guide rail. Since the upper and lower guide rails are a cable guide rope, this connection method can tighten the upper guide rail to ensure its straightness, thereby enhancing the experimental effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the depth-fixed directional control device of the present invention.

[0015] Figure 2 It is a schematic diagram of the guide track structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of the sliding connection frame of the present invention.

[0017] Figure 4 It is a schematic diagram of the tensioning mechanism structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the lifting mechanism structure of the present invention.

[0019] In the figure: 1. stand, 2. lifting mechanism, 3. guide rail, 4. ship model, 5. sliding connecting frame, 6. tensioning mechanism, 7. upper guide rail, 8. lower guide rail, 9. transmission wheel, 10. mounting plate, 11. upper slide, 12. lower slide, 13. sliding wheel, 14. slide groove, 15. adjustment seat, 16. adjustment bolt, 17. lifting frame, 18. tensioning cylinder, 19. mobile base, 20. slide rail, 21. traction rope, 22. fixed pulley, 23. winding drum, 24. lifting motor, 25. positioning hole, 26. fixing pin, 27. connecting plate. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figure 1 As shown, a ship wake model fixed depth and directional control device is disclosed, including stands 1 installed at both ends of an experimental pool, a guide track 3 is arranged between the stands 1, and a ship model 4 is used to navigate between the two stands 1 through the guide track 3. A lifting mechanism 2 for controlling the guide track 3 at the depth of the experimental pool is also installed on the stands 1. The stands 1 are arranged at both ends of the experimental pool, and each stand 1 is one end of the guide track 3. Therefore, when the ship model 4 navigates between the two stands 1, the wake characteristics generated by the ship model 4 when navigating can be studied. The guide track 3 is to ensure the navigation direction and navigation depth of the ship model 4, and the guide track 3 adopts the lifting mechanism 2 to control its depth in the experimental pool, so that the ship model 4 can navigate at different water depths.

[0022] In the entire depth-fixed orientation control device, the guide rail 3 determines the depth-fixed orientation parameters, such as Figure 2As shown, the guide rail 3 includes a transmission wheel 9 and a cable guide rope. The cable guide rope is a closed ring sleeved on the transmission wheels 9 at both ends to form an upper guide rail 7 and a lower guide rail 8. Sliding connecting frames 5 are installed on both sides of the ship model 4. The sliding connecting frames 5 on each side are slidably connected to the upper guide rail 7 and the lower guide rail 8. After the sliding connecting frame 5 is connected to the lower guide rail 8, the lower guide rail 8 is pushed to tilt in the direction away from the upper guide rail 7. In order to ensure that the ship model 4 can sail on the guide track 3, although the ship model 4 itself has a certain buoyancy, the guide track 3 also needs to have a certain load-bearing capacity, and the cost of using a longer guide track 3 is lower. Therefore, a cable guide rope is used as the main body of the guide track 3. The cable guide rope cooperates with the transmission wheel 9, and a cable guide rope connected end to end is put on the two transmission wheels 9 to form an upper guide rail 7 and a lower guide rail 8. The upper guide rail 7 and the lower guide rail 8 are essentially a cable guide rope, but the transmission wheel 9 is used to change its bending direction, so that one cable guide rope becomes two, thereby increasing its load-bearing capacity. The sliding connecting frame 5 is connected to both the upper and lower guide rails, so the weight of the ship model 4 is evenly distributed. In order to maintain the straightness of the upper and lower guide rails, the sliding connecting frame 5 in contact with the lower guide rail 8 can push the lower guide rail 8 to tilt in the direction away from the upper guide rail 7, which will further tighten the upper guide rail 7 to ensure the straightness of the upper guide rail 7.

[0023] like Figure 3 As shown, the sliding connecting frame 5 includes an upper slide 11 and a lower slide 12 fixed on the mounting plate 10. The upper slide 11 is fixed on the adjusting seat 15. A slide groove 14 is provided on the mounting plate 10. The adjusting seat 15 is slidably connected to the slide groove 14. An adjusting bolt 16 is also installed on the top of the adjusting seat 15 for controlling the upward and downward movement of the adjusting seat 15. The upper slide 11 is slidably connected to the upper guide rail 7, and the lower slide 12 is slidably connected to the lower guide rail 8. In order to facilitate the installation of the two slides on the guide rails, the upper slide 11 is set to an adjustable structure. First, the distance between the upper slide 11 and the lower slide 12 is controlled to become larger, so that the lower slide 12 can be placed on the lower guide rail 8. Then, the upper slide 11 is controlled to move downward by the adjusting bolt 16, and the distance between the two slides is reduced, so that the upper slide 11 is also placed on the surface of the upper guide rail 7, thereby completing the connection between the sliding connecting frame 5 and the guide rail 3.

[0024] As mentioned above, the lower guide rail 8 will be supported to tilt, so the sliding wheel 13 is installed on the lower frame 12, and the sliding wheel 13 extends downward from the lower frame 12 to slide with the lower guide rail 8, and the sliding wheel 13 is used as a structure to support the lower guide rail 8 to tilt outward, thereby reducing the wear on the lower guide rail 8. Figure 2 and Figure 3It can be seen that the upper slide 11 is a straight bar type, so that the contact area with the straight upper guide rail 7 is large, it is not easy to fall off, and will not wear the upper guide rail 7. If the lower slide 12 is also a straight bar type, then the inclined lower guide rail 8 will wear to the two ends of the lower slide 12. Therefore, the lower slide 12 is not a main structure that bears gravity, and the contact area does not need to be considered. Only the sliding wheel 13 needs to be set as a structure to reduce wear.

[0025] like Figure 4 As shown, a tensioning mechanism 6 is also installed at one end of the guide rail 3. The tensioning mechanism 6 includes a tensioning cylinder 18 and a mobile base 19. The transmission wheel 9 is installed on the mobile base 19 and is pushed by the tensioning cylinder 18 to move in a direction away from the other transmission wheel 9. Since the guide rail 3 adopts a cable guide structure, it is necessary to add a tensioning mechanism 6 to ensure that the cable guide is in a taut state. The tensioning mechanism 6 uses the tensioning cylinder 18 to push the transmission wheel 9 in the opposite direction to open the distance between the two transmission wheels 9 on the same guide rail 3 to achieve the tensioning effect. The transmission wheel 9 is installed on the mobile base 19, and the mobile base 19 is slidably installed on the slide rail 20 of the lifting frame 17 to ensure the smoothness of the mobile base 19.

[0026] like Figure 5 As shown, the lifting mechanism 2 includes a lifting frame 17 and a traction rope 21. The guide rail 3 is installed on the lifting frame 17. The bottom end of the traction rope 21 is connected to the lifting frame 17, and the top end passes through a plurality of fixed pulleys 22 to connect to the winding drum 23. The winding drum 23 is driven by a lifting motor 24. The lifting mechanism 2 uses a rope lifting method. The lifting frame 17 uses the pulling of the traction rope 21 to adjust the upper and lower positions. The traction rope 21 is wound on the winding drum 23. As the lifting motor 24 drives the winding drum 23 to retract and release the wire, the lifting effect of adjusting the lifting frame 17 is achieved. After the height of the lifting frame 17 is adjusted, the height needs to be locked. The lifting frame 17 is slidably connected to the stand 1 through a connecting plate 27. A plurality of positioning holes 25 are also provided on the stand 1. A fixing pin 26 is installed on the connecting plate 27. The fixing pin 26 is fixed to the positioning hole 25. The fixing pin 26 is inserted into the corresponding positioning hole 25 to achieve locking at different depths. In this way, the stability of the guide rail 3 can be ensured when the lifting frame 17 is fixed.

[0027] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A ship wake model fixed depth and directional control device, comprising stands (1) installed at both ends of an experimental pool, a guide track (3) being arranged between the stands (1) for a ship model (4) to navigate between the two stands (1) via the guide track (3), and a lifting mechanism (2) for controlling the guide track (3) at the depth of the experimental pool being further installed on the stands (1), characterized in that: The guide rail (3) includes a transmission wheel (9) and a cable guide rope, and the cable guide rope is a closed ring sleeved on the transmission wheel (9) at both ends to form an upper guide rail (7) and a lower guide rail (8). Sliding connecting frames (5) are installed on both sides of the ship model (4), and the sliding connecting frames (5) on each side are slidably connected to the upper guide rail (7) and the lower guide rail (8). After the sliding connecting frame (5) is connected to the lower guide rail (8), it pushes the lower guide rail (8) to tilt in a direction away from the upper guide rail (7).

2. A ship wake model depth-fixing and directional control device according to claim 1, characterized in that: The sliding connection frame (5) comprises an upper slide frame (11) and a lower slide frame (12) fixed on the mounting plate (10); the upper slide frame (11) is fixed on the adjustment seat (15); a slide groove (14) is provided on the mounting plate (10); the adjustment seat (15) is slidably connected to the slide groove (14); an adjustment bolt (16) is also installed on the top of the adjustment seat (15) for controlling the adjustment seat (15) to move up and down.

3. A ship wake model depth-fixing and directional control device according to claim 2, characterized in that: A sliding wheel (13) is installed on the lower carriage (12), and the sliding wheel (13) extends downward from the lower carriage (12) to slide in contact with the lower guide rail (8).

4. A ship wake model fixed depth and directional control device according to claim 1, characterized in that: A tensioning mechanism (6) is also installed at one end of the guide rail (3), and the tensioning mechanism (6) includes a tensioning cylinder (18) and a movable base (19). The transmission wheel (9) is installed on the movable base (19) and is pushed by the tensioning cylinder (18) to move in a direction away from the other opposite transmission wheel (9).

5. The ship wake model depth-fixing and directional control device according to claim 1, characterized in that: The lifting mechanism (2) comprises a lifting frame (17) and a traction rope (21). The guide track (3) is mounted on the lifting frame (17). The bottom end of the traction rope (21) is connected to the lifting frame (17), and the top end passes through a plurality of fixed pulleys (22) to connect to a winding drum (23). The winding drum (23) is driven by a lifting motor (24).

6. A ship wake model depth-fixing and directional control device according to claim 5, characterized in that: The lifting frame (17) is slidably connected to the vertical frame (1) via a connecting plate (27); a plurality of positioning holes (25) are provided on the vertical frame (1); a fixing pin (26) is installed on the connecting plate (27) and fixed to the positioning hole (25) via the fixing pin (26).

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