Ship stern shaft tube inner ring shaping device

Abstract

The utility model relates to the technical field of stern shaft tube machining, in particular to a ship stern shaft tube inner ring shaping device which comprises two shaping bases, arc faces are arranged on the opposite sides of the two shaping bases, limiting frames are arranged on the two sides of the opposite faces of the two shaping bases, a jack is arranged on the top face of the shaping base located at the bottom, and the jack is connected with the arc faces of the two shaping bases. A supporting plate in sliding connection with the inner side face of the top shaping base is arranged at the top of the jack, the top face of the supporting plate makes contact with the bottom face of the shaping base located at the top, and the bottom face of the supporting plate makes contact with the output end of the jack. According to the device, the cambered surfaces are arranged on the opposite sides of the two shaping seats, the device is placed in the stern shaft pipe fitting, the supporting plate is jacked up through the jack, the two shaping seats are expanded through the jack and the supporting plate, the cambered surfaces on the shaping seats are attached to the inner ring of the stern shaft pipe fitting, and therefore the inner ring of the stern shaft pipe fitting is shaped; and the two sections of stern shaft pipe fittings can be conveniently aligned subsequently, and the two sections of stern shaft pipe fittings are welded end to end.

Description

Technical Field

[0001] The utility model relates to the technical field of stern tube processing, in particular to an inner ring shaping device for a ship stern tube. Background Technique

[0002] The ship stern tube is an important part of the ship propulsion system. The stern tube is located at the tail of the ship and connects the ship's main engine and propeller. The main function of the stern tube is to transmit the rotational power of the main engine to the propeller, enabling the ship to move forward or backward. Due to the large volume of the stern tube, the stern tube is usually composed of multiple sections of pipe fittings welded together, and each section of the stern tube fitting is composed of two arc-shaped plate parts welded to each other. When welding the two arc-shaped plate parts together, it is easy for the arc-shaped plate parts to deform to a certain extent. After welding the two arc-shaped plate parts to form a section of the stern tube fitting, due to the deformation that occurs during the welding of the stern tube fitting, the two sections of the stern tube fitting cannot be aligned with each other, which affects the subsequent head-to-tail welding of the two sections of the stern tube fitting and is not conducive to the processing of the stern tube fitting. Content of the Utility Model

[0003] The purpose of the utility model is to provide an inner ring shaping device for a ship stern tube to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An inner ring shaping device for a ship stern tube includes two shaping seats. Arc surfaces are provided on the opposite sides of the two shaping seats. Limiting frames are provided on both sides of the opposite surfaces of the two shaping seats. A jack is provided on the top surface of the shaping seat at the bottom. A support plate that is slidably connected to the inner side surface of the top shaping seat is provided on the top of the jack. The top surface of the support plate contacts the bottom surface of the top shaping seat, and the bottom surface of the support plate contacts the output end of the jack.

[0006] Furthermore: The output end of the jack is drivingly connected to a connecting plate that is slidably inserted into the inner side surface of the bottom of the support plate. Two connecting screws that are screwed to the inner side surface of the support plate are screwed to the bottom surface of the connecting plate.

[0007] Furthermore: Insertion grooves are provided on the opposite surfaces of the two shaping seats. Insertion blocks that are slidably connected to the inner side surfaces of the adjacent insertion grooves are fixedly connected to the top surface of the support plate.

[0008] Furthermore: Limiting seats are provided at the four corners of the bottom of the jack. Four threaded grooves are provided on the opposite surfaces of the two shaping seats corresponding to the limiting seats. Limiting screws that are screwed to the adjacent threaded grooves are screwed to the inner side surfaces of the limiting seats.

[0009] Furthermore, threaded rods are provided on both sides of the support plate corresponding to the limiting frames. Both ends of the threaded rods extend into the adjacent limiting frames. Two first positioning nuts are screwed onto the side of the threaded rods, and the first positioning nuts are located inside the adjacent limiting frames. The opposite surfaces of the two first positioning nuts are in contact with the inner side surfaces of the adjacent limiting frames.

[0010] Furthermore, two L-shaped seats are fixedly connected to the corresponding limiting frames on the opposite surfaces of the two shaping seats. The inner side surfaces of the L-shaped seats are in contact with the inner side surfaces of the adjacent limiting frames. The two L-shaped seats on the same shaping seat face in opposite directions, and the two L-shaped seats on the same side of the support plate face in opposite directions.

[0011] Preferably, two second positioning nuts are screwed onto the side of the threaded rod between the adjacent two limiting frames, and the opposite surfaces of the two second positioning nuts are in contact with the side surfaces of the adjacent limiting frames.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Arc surfaces are provided on the opposite sides of the two shaping seats. The shaping part of the stern shaft pipe fitting can be heated by a heating device to increase the temperature of the stern shaft pipe fitting. Then, the device is placed inside the stern shaft pipe fitting, and the support plate is lifted by a jack. Thus, the two shaping seats are spread apart by the jack and the support plate, and the arc surfaces on the shaping seats are made to abut against the inner ring of the stern shaft pipe fitting, thereby shaping the inner ring of the stern shaft pipe fitting, facilitating the subsequent alignment of the two sections of the stern shaft pipe fitting and the end-to-end welding of the two sections of the stern shaft pipe fitting.

[0014] 2. Two L-shaped seats are fixedly connected to the shaping seats, and the threaded rod can connect the upper and lower adjacent limiting frames. Since the L-shaped seats are inserted into the limiting frames, the L-shaped seats can prevent the limiting frames from rotating around the threaded rod, and the limiting frames can prevent the shaping seats from translating, avoiding the separation of the L-shaped seats from the limiting frames. In this way, the two shaping seats can be clamped on the adjacent two limiting frames. The first positioning nut can be rotated and removed from the threaded rod, and then the limiting frame can be moved upward to disengage from the threaded rod. At this time, the shaping seat can be disengaged from the adjacent two limiting frames, and then a shaping seat with a different arc can be replaced as needed. The disassembly and installation are relatively simple and convenient to use. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of a device for shaping the inner ring of a ship's stern shaft pipe of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the limiting frame in the present utility model;

[0017] Figure 3 is the internal structural schematic diagram of the support plate in the present utility model;

[0018] Figure 4 It is a schematic diagram of the limit seat structure in the utility model.

[0019] In the figure: 1. shaping seat; 11. L-shaped seat; 12. plug-in slot; 13. threaded slot; 2. limit frame; 3. threaded rod; 31. positioning nut one; 32. positioning nut two; 5. jack; 51. connecting plate; 52. connecting screw; 6. support plate; 61. plug-in block; 7. limit seat; 71. limit screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1-4 In an embodiment of the utility model, a ship stern tube inner ring shaping device includes two shaping seats 1, the two shaping seats 1 are provided with arc surfaces on the opposite sides, and the two shaping seats 1 are provided with limited position frames 2 on both sides of the opposite surfaces. A jack 5 is provided on the top surface of the shaping seat 1 at the bottom, and a support plate 6 is provided on the top of the jack 5, which is slidably connected to the inner side surface of the top shaping seat 1. The top surface of the support plate 6 contacts the bottom surface of the shaping seat 1 at the top, and the bottom surface of the support plate 6 contacts the output end of the jack 5.

[0022] Specifically, corresponding heating equipment can be configured to heat the shaping part of the stern shaft pipe fitting by the heating equipment to increase the temperature of the stern shaft pipe fitting, and then the shaping device is placed inside the stern shaft pipe fitting, and the support plate 6 is lifted up by the jack 5. The support plate 6 can lift up the shaping seat 1 located at the top, so that the two shaping seats 1 are spread apart by the jack 5 and the support plate 6, so that the arc surface on the shaping seat 1 is abutted against the inner ring of the stern shaft pipe fitting, thereby shaping the inner ring of the stern shaft pipe fitting, which is convenient for the subsequent alignment of the two sections of the stern shaft pipe fitting and the head-to-tail welding of the two sections of the stern shaft pipe fitting.

[0023] Embodiment 1

[0024] like Figure 3 As shown, in this embodiment, the output end of the jack 5 is transmission-connected with a connecting plate 51 which is slidably plugged into the inner side surface of the bottom of the support plate 6, and the bottom surface of the connecting plate 51 is screwed together with two connecting screws 52 which are screwed together with the inner side surface of the support plate 6. The opposite surfaces of the two shaping seats 1 are provided with plug-in grooves 12, and the top surface of the support plate 6 is fixedly connected with a plug-in block 61 which is slidably connected to the inner side surface of the adjacent plug-in groove 12.

[0025] During specific implementation, the connecting screw 52 can connect the connecting plate 51 to the bottom of the supporting plate 6. By inserting the connecting plate 51 into the bottom of the supporting plate 6, the position of the supporting plate 6 can be maintained to prevent the supporting plate 6 from shifting. By inserting the inserting block 61 into the inserting groove 12, the movement of the shaping seat 1 at the top relative to the supporting plate 6 can be restricted.

[0026] As Figure 4 shown, in this embodiment, limit seats 7 are provided at the four corners of the bottom of the jack 5. Four threaded grooves 13 are provided on the two shaping seats 1 corresponding to and facing each other with respect to the limit seats 7. A limit screw 71 that is screwed into the adjacent threaded groove 13 is screwed and connected to the inner side surface of the limit seat 7.

[0027] During specific implementation, the limit screw 71 can be screwed into the threaded groove 13 of the bottom shaping seat 1 to fix the limit seat 7 on the bottom shaping seat 1. The four limit seats 7 can be used to clamp the four corners of the base of the jack 5, thereby restricting the jack 5 on the bottom shaping seat 1 and facilitating the overall movement of the device.

[0028] Embodiment Two

[0029] On the basis of Embodiment One, as Figures 1-2 shown, in this embodiment, threaded rods 3 are provided on both sides of the supporting plate 6 corresponding to the limit frames 2. Both ends of the threaded rods 3 extend into the adjacent limit frames 2. Two positioning nuts one 31 are screwed and connected to the side surface of the threaded rods 3, and the positioning nuts one 31 are located inside the adjacent limit frames 2. The opposite surfaces of the two positioning nuts one 31 are in contact with the inner side surface of the adjacent limit frames 2. Two L-shaped seats 11 are fixedly connected to the two limit frames 2 corresponding to and facing each other on the two shaping seats 1. The inner side surface of the L-shaped seats 11 is in contact with the inner side surface of the adjacent limit frames 2. The two L-shaped seats 11 on the same shaping seat 1 face in opposite directions, and the two L-shaped seats 11 on the same side of the supporting plate 6 face in opposite directions. Two positioning nuts two 32 are screwed and connected to the side surface of the threaded rods 3 between the adjacent two limit frames 2, and the opposite surfaces of the two positioning nuts two 32 are in contact with the side surfaces of the adjacent limit frames 2.

[0030] During specific implementation, the threaded rods 3 can connect the two adjacent upper and lower limit frames 2. Since the L-shaped seats 11 are inserted into the limit frames 2, the L-shaped seats 11 can be used to prevent the limit frames 2 from rotating around the threaded rods 3 and avoid the situation where the shaping seats 1 rotate relative to the limit frames 2 and the L-shaped seats 11 move out of the limit frames 2. The two L-shaped seats 11 on the same shaping seat 1 face in opposite directions, so that the limit frames 2 can be used to prevent the shaping seats 1 from translating and avoid the situation where the L-shaped seats 11 are separated from the limit frames 2, enabling the two shaping seats 1 to be clamped on the two adjacent limit frames 2. Thus, the two shaping seats 1 are connected by the framework composed of the four limit frames 2 and the two threaded rods 3, facilitating the overall movement of the device;

[0031] Before the stern tube is shaped, the positioning nut 1-31 can be rotated to move the positioning nut 1-31 along the threaded rod 3, move the positioning nut 1-31 to a suitable position, so that there is a suitable distance between the two positioning nuts 1-31, and then place the device inside the stern tube. When the support plate 6 is lifted by the jack 5, the support plate 6 can drive the shaping seat 1 at the top to move upward, expand the two shaping seats 1, the shaping seat 1 at the top can drive the limit frame 2 located at the top to move, and the limit frame 2 at the top can drive the threaded rod 3 to move upward through the positioning nut 1-31. After the top surface of the positioning nut 1-31 at the bottom contacts the inner top surface of the limit frame 2 at the bottom, the positioning nut 1-31 can be used to prevent the two adjacent limit frames 2 from moving away from each other, so as to prevent the two shaping seats 1 from moving away from each other. In this way, the positioning nut 1-31 can be used for auxiliary positioning to avoid the situation that the jack 5 extends too much and the two shaping seats 1 are expanded too much, which is convenient for accurately expanding the two shaping seats 1 to a suitable distance and accurately shaping the stern tube. After the two shaping seats 1 are expanded to a suitable distance, the positioning nut 2-32 can be rotated to make the positioning nut 2-32 abut against the side surface of the adjacent limit frame 2, so as to clamp the limit frame 2 by the positioning nut 1-31 and the positioning nut 2-32, fix the limit frame 2 and the threaded rod 3 to each other, and thus fix the two shaping seats 1 to each other. The two shaping seats 1 are supported by the limit frame 2 and the threaded rod 3, so that the shaping seats 1 are abutted against the inner ring of the stern tube fitting for a certain period of time, so as to shape the stern tube fitting;

[0032] When it is necessary to shape stern tubes with different diameters, the positioning nut 1-31 can be rotated to remove the positioning nut 1-31 from the threaded rod 3, and then the limit frame 2 at the top can be moved upward to disengage from the threaded rod 3. At this time, the limit frame 2 can be translated and removed from the shaping seat 1, so as to separate the shaping seat 1 and the limit frame 2, and take out the support plate 6 from the top shaping seat 1. The limit screw 71 is screwed out, and the limit seat 7 is removed from the bottom shaping seat 1. At this time, the jack 5 can be separated from the bottom shaping seat 1, and then the shaping seat 1 with different arc radiances can be replaced according to needs. The disassembly and installation are relatively simple and convenient to use.

[0033] It is possible to choose to open screw holes on the L-shaped seat 11 and the limit frame 2, and screw the screws into the screw holes to stably connect the L-shaped seat 11 and the limit frame 2.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0035] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ship stern tube inner ring shaping device, characterized in that: The invention comprises two shaping seats (1), wherein the two shaping seats (1) are both provided with an arc surface on the opposite sides thereof, and the two sides of the opposite surfaces of the two shaping seats (1) are both provided with a limit frame (2), and the top surface of the shaping seat (1) located at the bottom is provided with a jack (5), and the top of the jack (5) is provided with a support plate (6) which is slidably connected to the inner side surface of the top shaping seat (1), and the top surface of the support plate (6) is in contact with the bottom surface of the shaping seat (1) located at the top, and the bottom surface of the support plate (6) is in contact with the output end of the jack (5).

2. A ship stern tube inner ring shaping device according to claim 1, characterized in that: The output end of the jack (5) is drivingly connected to a connecting plate (51) which is slidably plugged into the inner side surface of the bottom of the support plate (6); the bottom surface of the connecting plate (51) is screwed together with two connecting screws (52) which are screwed together with the inner side surface of the support plate (6).

3. A ship stern tube inner ring shaping device according to claim 1, characterized in that: The opposing surfaces of the two shaping seats (1) are each provided with an inserting groove (12), and the top surface of the support plate (6) is fixedly connected with an inserting block (61) which is slidably connected to the inner side surface of the adjacent inserting groove (12).

4. A ship stern tube inner ring shaping device according to claim 1, characterized in that: The four corners at the bottom of the jack (5) are each provided with a limit seat (7), and the two shaping seats (1) are opposite to each other and are provided with four threaded grooves (13) corresponding to the limit seats (7). The inner side surface of the limit seat (7) is screwed together with a limit screw (71) screwed together with an adjacent threaded groove (13).

5. A ship stern tube inner ring shaping device according to claim 1, characterized in that: The support plate (6) is provided with threaded rods (3) on both sides corresponding to the limit frames (2), both ends of the threaded rods (3) extend into the interior of the adjacent limit frames (2), the side surfaces of the threaded rods (3) are screwed together with two positioning nuts (31), and the positioning nuts (31) are located inside the adjacent limit frames (2), and the opposing surfaces of the two positioning nuts (31) are in contact with the inner side surfaces of the adjacent limit frames (2).

6. A ship stern tube inner ring shaping device according to claim 5, characterized in that: Two L-shaped seats (11) are fixedly connected to the corresponding limiting frames (2) on the opposite sides of the two shaping seats (1), and the inner side surfaces of the L-shaped seats (11) are in contact with the inner side surfaces of the adjacent limiting frames (2). The two L-shaped seats (11) located on the same shaping seat (1) face opposite directions, and the two L-shaped seats (11) located on the same side of the support plate (6) face opposite directions.

7. A ship stern tube inner ring shaping device according to claim 5, characterized in that: The side surface of the threaded rod (3) is located between two adjacent limiting frames (2) and is screwed and connected with two second positioning nuts (32), and the back surfaces of the two second positioning nuts (32) are in contact with the side surfaces of the adjacent limiting frames (2).

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