Marine shafting locking device

Abstract

The utility model discloses a marine shafting locking device, and relates to the technical field of locking devices. Comprising a connecting piece and a mounting base, a shafting flange is mounted on the outer wall of the connecting piece, an insertion opening is formed in the bottom end of the shafting flange, a wear-resistant fixing piece is inserted into the insertion opening, a mounting piece is fixed to one side of the wear-resistant fixing piece and located on one side of the shafting flange, and a second bolt is in threaded connection between the mounting piece and the shafting flange. The mounting piece and the wear-resistant fixing piece are independently arranged, when the wear-resistant fixing piece is damaged, the second bolt can be taken down, the mounting piece and the wear-resistant fixing piece can be replaced, and the whole shafting flange does not need to be replaced, so that the material cost is saved; the insertion block is firmly fixed in the sliding seat through the screw rod, and when the insertion block is damaged and needs to be disassembled in the later period, the insertion block can be rapidly replaced only by taking down the screw rod. And during later maintenance, the damaged insertion block can be easily replaced only by removing the screw rod.

Description

Technical Field

[0001] This utility model relates to the field of locking device technology, specifically a marine shafting locking device. Background Technology

[0002] For multi-shaft main propulsion structures on ships, if one shaft stops operating while the others are rotating normally, the water flow driven by the working propeller will act on the surface of the propeller providing the working shaft, generating a certain rotational torque and causing the shaft to rotate at low speed. This low-speed rotation of the shaft in the non-working state easily causes wear on the radial sliding bearings and thrust bearings, reducing bearing life and accelerating the wear of the clutch friction plates inside the gearbox. Furthermore, the low-speed rotation of the shaft in the non-working state can easily lead to safety accidents. Therefore, a locking device is needed. An existing marine main propulsion shaft locking device (Announcement No.: CN214112838U) has the following disadvantages in use:

[0003] After prolonged use, the surface of a single-ended pin will wear down. A severely worn single-ended pin cannot properly match the upper notch of the shaft flange, which will cause the shaft to rotate. This can easily cause wear on the radial sliding bearing and thrust bearing, reducing the bearing life. Therefore, it is necessary for staff to frequently inspect and replace the single-ended pin, which is inconvenient. Furthermore, when the upper notch of the flange is worn, the entire flange needs to be replaced, which is wasteful of materials. To address these issues, this patent proposes a marine shaft locking device. Utility Model Content

[0004] The purpose of this invention is to provide a marine shafting locking device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marine shafting locking device, including a connector and a mounting base. A shafting flange is installed on the outer wall of the connector. A socket is opened at the bottom end of the shafting flange. A wear-resistant fastener is inserted into the socket. An mounting component is fixed on one side of the wear-resistant fastener. The mounting component is located on one side of the shafting flange. A second bolt is screwed between the mounting component and the shafting flange.

[0006] Preferably, a slide block is slidably connected inside the mounting base, and a plug is inserted into one side of the slide block, which is inserted into the wear-resistant fastener.

[0007] Preferably, a slot is provided on one side of the slide block, the insert block is inserted into the slot, a connecting hole is provided on one side of the insert block, a screw is screwed between the slide block and the connecting hole, and a knob is fixed at one end of the screw.

[0008] Preferably, an electric telescopic rod is fixed to one inner wall of the mounting base, and the telescopic end of the electric telescopic rod is fixed to the slide.

[0009] Preferably, the inner walls at both ends of the mounting base are provided with sliding grooves, and connecting blocks are fixed at both ends of the sliding base, with the connecting blocks sliding within the sliding grooves.

[0010] Preferably, a fixing plate is fixed to the outer wall of the connector, and a plurality of first bolts are screwed between the shaft flange and the fixing plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By independently configuring mounting parts and wear-resistant fasteners, when the wear-resistant fasteners are damaged, the second bolt can be removed and the mounting parts and wear-resistant fasteners can be replaced without replacing the entire shaft flange, thus saving material costs;

[0013] Furthermore, the insert block is inserted into the slot and securely fixed to the slide block by a screw. If the insert block becomes damaged and needs to be removed later, simply remove the screw for quick replacement. During maintenance, the damaged insert block can be easily replaced simply by removing the screw. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the insert structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the slide groove structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the slot structure of this utility model.

[0018] In the diagram: 1. Connecting component; 2. Shaft flange; 3. Fixing plate; 4. First bolt; 5. Mounting component; 6. Second bolt; 7. Wear-resistant fastener; 8. Mounting base; 9. Slide block; 10. Insert block; 11. Electric telescopic rod; 12. Knob; 13. Slide groove; 14. Slot; 15. Screw; 16. Connecting hole. Detailed Implementation

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In multi-shaft main propulsion structures of ships, if one shaft stops operating while the others are rotating normally, the water flow driven by the working propeller acts on the surface of the propeller providing the working shaft, generating a certain rotational torque and causing the shaft to rotate at low speed. This low-speed rotation of the shaft in the non-operating state easily causes wear on radial sliding bearings and thrust bearings, reducing bearing life and accelerating the wear of the clutch friction plates inside the gearbox. Furthermore, the low-speed rotation of the shaft in the non-operating state can easily lead to safety accidents. Therefore, locking devices are needed to lock the shafts and prevent them from rotating in the non-operating state. Marine shaft locking devices play a crucial role in the ship's propulsion system, thereby improving the ship's reliability, safety, and service life. This is crucial for the long-term stable operation of a ship. The marine shafting locking device provided by this utility model has a wear-resistant fastener 7, and the insert 10 is inserted into the wear-resistant fastener 7. When the wear-resistant fastener 7 is damaged, it can be replaced. The replacement can be done by removing the second bolt 6 on the mounting part 5, without having to replace the entire shafting flange 2, thus saving materials. In addition, when the insert 10 is damaged, it can be replaced separately, which is relatively convenient. It only requires removing the screw 15.

[0021] like Figures 1-4 As shown, this utility model provides a technical solution: a marine shafting locking device, including a connector 1 and a mounting base 8. The connector 1 is installed on the shafting. A shafting flange 2 is installed on the outer wall of the connector 1. A socket is opened at the bottom end of the shafting flange 2. A wear-resistant fixing member 7 is inserted into the socket. A mounting member 5 is fixed on one side of the wear-resistant fixing member 7. The mounting member 5 is located on one side of the shafting flange 2. The mounting member 5 and the shafting flange 2 are fixed together by a second bolt 6.

[0022] It is important to note that by independently configuring mounting component 5 and wear-resistant fastener 7, when wear-resistant fastener 7 is damaged, the second bolt 6 can be removed, and mounting component 5 and wear-resistant fastener 7 can be replaced without replacing the entire shafting flange 2, thus saving on the procurement and replacement costs of shafting flange 2. Shafting flange 2 is a large and expensive component, and directly replacing it is costly. Replacing only wear-resistant fastener 7 can significantly reduce maintenance costs, while replacing the entire shafting flange 2 may require more time, including disassembly, installation, and commissioning. By replacing only wear-resistant fastener 7, maintenance cycles can be significantly shortened, ship downtime reduced, and ship operating efficiency improved. Especially in emergency situations, normal operation can be restored more quickly. This not only reduces maintenance costs and downtime but also optimizes resource utilization and inventory management, improves maintenance efficiency and system reliability, thereby significantly improving the economy and flexibility of ship maintenance, especially suitable for long-term operating ship systems.

[0023] like Figure 3 and Figure 4 As shown, a slide block 9 is slidably connected inside the mounting base 8. A plug block 10 is inserted into one side of the slide block 9 and is inserted into the wear-resistant fastener 7. A slot 14 is provided on one side of the slide block 9, and the plug block 10 is inserted into the slot 14. A connecting hole 16 is provided through one side of the plug block 10. A screw rod 15 is screwed between the slide block 9 and the connecting hole 16, and a knob 12 is fixed to one end of the screw rod 15.

[0024] It should be noted that the insert 10 is inserted into the slot 14 and is securely fixed to the slide 9 by the screw 15. If the insert 10 is damaged and needs to be disassembled later, simply remove the screw 15 for quick replacement. During later maintenance, the damaged insert 10 can be easily replaced simply by removing the screw 15.

[0025] like Figure 1 and Figure 3 As shown, an electric telescopic rod 11 is fixed to one inner wall of the mounting base 8, and the telescopic end of the electric telescopic rod 11 is fixed to the slide 9. Slide grooves 13 are provided on the inner walls of both ends of the mounting base 8, and connecting blocks are fixed to both ends of the slide 9, with the connecting blocks sliding within the slide grooves 13. A fixing plate 3 is fixed to the outer wall of the connecting piece 1, and multiple first bolts 4 are screwed between the shaft flange 2 and the fixing plate 3.

[0026] It is important to note that the electric telescopic rod 11 moves the slide block 9, causing the insert block 10 to be inserted into the wear-resistant fixing part 7, thus limiting and fixing the shaft flange 2. This prevents the shaft from rotating at low speed when not in operation, which could easily cause wear on the radial sliding bearing and thrust bearing, reducing bearing life and accelerating the wear of the clutch friction plate inside the gearbox. Furthermore, low-speed rotation of the shaft when not in operation can easily lead to safety accidents.

[0027] Working principle: By activating the electric telescopic rod 11, the electric telescopic rod 11 drives the slide 9 to move, so that the insert 10 is inserted into the wear-resistant fastener 7, which limits and fixes the shaft flange 2. When the wear-resistant fastener 7 is damaged later, the second bolt 6 can be removed and the mounting part 5 and the wear-resistant fastener 7 can be replaced without replacing the entire shaft flange 2, saving materials. When the insert 10 is damaged, the screw 15 can be removed to remove the insert 10.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A marine shafting locking device, comprising a connector (1) and a mounting base (8), characterized in that: A shaft flange (2) is installed on the outer wall of the connector (1). A socket is opened at the bottom of the shaft flange (2). A wear-resistant fastener (7) is inserted into the socket. An installation part (5) is fixed on one side of the wear-resistant fastener (7). The installation part (5) is located on one side of the shaft flange (2). A second bolt (6) is screwed between the installation part (5) and the shaft flange (2).

2. The marine shafting locking device according to claim 1, characterized in that: The mounting base (8) has a sliding seat (9) slidably connected inside, and a plug (10) is inserted into one side of the sliding seat (9). The plug (10) is inserted into the wear-resistant fastener (7).

3. The marine shafting locking device according to claim 2, characterized in that: A slot (14) is provided on one side of the slide (9), and the insert (10) is inserted into the slot (14). A connecting hole (16) is provided on one side of the insert (10). A screw (15) is screwed between the slide (9) and the connecting hole (16). A knob (12) is fixed at one end of the screw (15).

4. The marine shafting locking device according to claim 1, characterized in that: An electric telescopic rod (11) is fixed to one side of the inner wall of the mounting base (8), and the telescopic end of the electric telescopic rod (11) is fixed to the slide (9).

5. The marine shafting locking device according to claim 1, characterized in that: The inner walls of both ends of the mounting base (8) are provided with sliding grooves (13), and both ends of the slide (9) are fixed with connecting blocks, which slide in the sliding grooves (13).

6. The marine shafting locking device according to claim 1, characterized in that: The outer wall of the connector (1) is fixed with a fixing plate (3), and a plurality of first bolts (4) are screwed between the shaft flange (2) and the fixing plate (3).

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