Ship shafting self-locking shaft locking device and shaft locking method

Abstract

The invention relates to the technical field of ship shafting self-locking shaft locking, and discloses a ship shafting self-locking shaft locking device, a shaft locking base comprises a bottom plate, a triangular web plate and two stop blocks, the stop blocks are arranged on the bottom plate in parallel, the stop blocks are fixedly arranged on the bottom plate through the triangular web plate, a shaft locking sliding block slideway is arranged between the two stop blocks, and a shaft locking sliding block is arranged on the shaft locking sliding block slideway. And a lock shaft sliding block is arranged in the lock shaft sliding block slideway. The shaft locking method comprises the steps that the size and number of all components of the shaft locking device are determined; using a turning gear to rotate the open groove of the flange on the shaft system to the position where the shaft needs to be locked; the locking bolt is unscrewed, the handle is pushed to enable the locking shaft sliding block to slide in the locking shaft sliding block sliding way, the locking shaft sliding block is clamped in the opening groove of the flange, shaft locking is achieved, at the moment, the electronic limiting switch is changed into a close state from an open state, a signal is transmitted to a host for remote control, interlocking with the host is achieved, the host cannot be started, and misoperation protection is achieved. On the basis that the structure of the lock shaft device is simplified, the cost is reduced, and the safety of the lock shaft is improved.

Description

Technical Field

[0001] The invention relates to the field of self-locking shaft locking of ship shaft systems, and in particular to a self-locking shaft locking device and a shaft locking method of a ship shaft system. Background Art

[0002] Large LNG ships are all equipped with dual-shaft systems with two engines and two propellers. They are usually equipped with redundant class symbols according to the classification society they belong to: that is, when one propulsion system is lost, the function of the other propulsion system will not be affected. Based on this requirement, the current mainstream large LNG ships need to be equipped with a shaft locking device as standard to lock the other failed shaft system that is impacted by the water flow when the ship is sailing at low speed under the action of a single shaft system. The shaft locking devices such as brake pads currently used at home and abroad are not only complex in structure, but also costly, and generally cannot be interlocked with the main engine, which can easily lead to safety accidents due to misoperation.

[0003] The patent application with publication number CN116812129A discloses a temporary locking device for a ship shaft system, including a threaded sleeve, a shaft locking slider, a slide rail, and a support. The slide rail is installed on the support, and the shaft locking slider is slidably installed on the slide rail. The shaft locking slider can move linearly along the slide rail; a limiting hole is provided on the shaft locking slider corresponding to the threaded sleeve, and the threaded sleeve is used to be installed on the bolt of the shaft system flange, and the threaded sleeve is provided with an internal screw hole that matches the bolt thread; after the shaft locking slider moves along the slide rail, the limiting hole covers the outside of the threaded sleeve.

[0004] The prior art device has a thin structure, which affects the operating efficiency when in use, and cannot be interlocked with the host, which is prone to misoperation and may lead to safety accidents.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a self-locking shaft locking device and a shaft locking method for a ship shaft system, which can reduce the cost and improve the safety of shaft locking on the basis of simplifying the structure of the shaft locking device.

[0007] The technical solution adopted by the present invention is: A self-locking shaft locking device for a ship shaft system comprises a shaft locking base and a shaft locking slider arranged on the shaft locking base. The shaft locking base comprises a bottom plate, a triangular web plate, and a stop block. There are two stop blocks which are arranged in parallel on the bottom plate. The stop blocks are fixed to the bottom plate through the triangular web plate. A shaft locking slider slideway is provided between the two stop blocks. The shaft locking slider slideway is provided with a shaft locking slider, and a handle is provided at the end of the shaft locking slider.

[0008] By adopting the above structure, the device locks the shaft by moving the position of the shaft locking slider to make it engage with the flange groove. The device has a simple structure, is easy to operate, and is easy to promote and use.

[0009] Preferably, a locking shaft slider slide is provided in the middle of the two stop blocks, a triangular web is provided on the outside, and four triangular webs are provided on one stop block. The triangular webs have equal spacing, one angle side of the triangular web is welded to the bottom plate, and the other right-angle side is welded to the stop block.

[0010] By adopting the above structure, a triangular web is arranged on the outside of the stop block, the device structure is more stable, the shaft locking slider slideway structure between the stop blocks is stable, and it is easy to operate and use.

[0011] Preferably, fixing bolt holes are opened on the bottom plate, and the fixing bolt holes are evenly arranged between the triangular webs.

[0012] By adopting the above structure, the bottom plate and the hull base can be easily fixed by fixing bolts.

[0013] Preferably, the two stop blocks are provided with baffles at the handle end of the shaft locking slider, the baffles are fixed by fixing bolts, and the ends of the baffles extend to the slideway of the shaft locking slider.

[0014] By adopting the above structure, the baffle plate can be provided to prevent the shaft locking slider from flying out of the slideway.

[0015] Preferably, the two stop blocks are provided with an electronic limit switch base on the upper surface of the end portion of the lock shaft slider on one side of the handle, and the electronic limit switch is installed on the electronic limit switch base.

[0016] By adopting the above structure, the electronic limit switch transmits the closing state signal to the host remote control, thereby achieving interlocking with the host and preventing the host from being started by mistake.

[0017] Preferably, locking bolt holes of the same size are formed on the two stop blocks and the shaft-locking slider, and the stop blocks and the shaft-locking slider are fixed in position by the locking bolt holes and the locking bolts.

[0018] By adopting the above structure, when the shaft locking slider is located at the non-shaft locking end, the locking bolt holes of the stop block and the shaft locking slider are aligned, and the locking bolt is tightened to fix the position of the shaft locking slider and improve the safety of the shaft locking device.

[0019] Preferably, a shaft locking method of a ship shaft self-locking shaft locking device is characterized by comprising the following steps: Step 1: Determine the size and number of each component of the shaft locking device according to the shaft locking torque; Step 2: Use a turning machine to rotate the opening groove of the flange on the shaft system to the position where the shaft needs to be locked; Step 3: Unscrew the locking bolt, push the handle to slide the lock shaft slider in the lock shaft slider slideway, and clamp the lock shaft slider in the opening groove of the flange to lock the shaft. At this time, the electronic limit switch changes from the open state to the closed state. This signal is transmitted to the host remote control to interlock with the host. The host cannot be started to protect against misoperation.

[0020] By adopting the above process, the device is easy to operate, and the electronic limit switch base is fixed at the ends of the two stop blocks. The signal of the electronic limit switch can be transmitted to the host remote control, and interlocking with the host can be achieved.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The device of the present invention achieves shaft locking by moving the position of the shaft locking slider to make it engage with the flange groove. The device has a simple structure, convenient operation, and is easy to promote and use. A triangular web is provided on the outside of the stop block, and the device structure is more stable. The shaft locking slider slideway structure between the stop blocks is stable and easy to operate and use.

[0022] 2. The device of the present invention is provided with a baffle at the end of the stop block to prevent the locking shaft slider from flying out of the slideway.

[0023] 3. The device of the present invention is provided with an electronic limit switch at the end of the stop block, and the signal of the electronic limit switch can be transmitted to the host remote control, so as to achieve interlocking with the host. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a self-locking shaft locking device for a ship shaft system in the device of the present invention; Figure 2 is a side view of the device of the present invention; Figure 3 This is a schematic diagram of the non-shaft-locking state of the device of the present invention; Figure 4 It is a schematic diagram of the shaft locking state of the device of the present invention.

[0025] Among them: 1. Shaft system; 2. Flange; 3. Open groove; 4. Bottom plate; 5. Triangular web; 6. Fixing bolt hole; 7. Stop block; 8. Shaft lock slider; 9. Locking bolt; 10. Electronic limit switch base; 11. Fixing bolt; 12. Baffle; 13. Handle; 14. Electronic limit switch. DETAILED DESCRIPTION

[0026] like Figure 1-4 As shown, a self-locking shaft locking device for a ship shaft system includes a shaft locking base and a shaft locking slider 8 arranged on the shaft locking base. The shaft locking base includes a bottom plate 4, a triangular web 5, and a stop block 7. The stop blocks 7 are two and arranged in parallel on the bottom plate 4. The stop blocks 7 are fixed to the bottom plate 4 through the triangular web 5. There is a shaft locking slider slideway between the two stop blocks 7. The shaft locking slider slideway is provided with a shaft locking slider 8. The width of the slideway is determined by the size of the shaft locking slider 8. A handle 13 is provided at the end of the shaft locking slider 8. The shaft is locked by moving the position of the shaft locking slider 8 so that it engages with the opening groove 2 of the flange 2. The device has a simple structure, is easy to operate, and is easy to promote and use. The middle of the two stoppers 7 is a shaft locking slider slideway, with a triangular web 5 on the outside. One side of the stopper 7 is provided with four triangular webs 5, and the triangular webs 5 are equally spaced. One angle side of the triangular web 5 is welded to the bottom plate 4, and the other right angle side is welded to the stopper 7. The height of the stopper 7 is higher than the height of the triangular web 5 on the shaft locking base. The bottom plate 4 is provided with fixing bolt holes 6, and the fixing bolt holes 6 are evenly arranged between the triangular webs 5. The triangular web 5 is provided on the outside of the stopper 7, and the device structure is more stable, and the shaft locking slider slideway between the stoppers 7 has a stable structure, which is convenient for operation and use.

[0027] The two stop blocks 7 are provided with baffles 12 at the ends of the handles 13 of the shaft locking slide block 8, the baffles 12 are fixed by fixing bolts 11, and the ends of the baffles 12 extend to the shaft locking slide block slideway. The baffles 12 can prevent the shaft locking slide block 8 from flying out of the slideway.

[0028] The two stop blocks 7 are provided with an electronic limit switch base 10 on the upper surface of the end of the handle 13 on one side of the locking slider 8, and an electronic limit switch 14 is installed on the electronic limit switch base 10. The locking signal and non-locking signal of the electronic limit switch 14 can be transmitted to the host and interlocked with the host, thereby improving the safety of locking the shaft.

[0029] The two stop blocks 7 and the shaft locking slider 8 are both provided with locking bolt holes of the same size, and the stop blocks 7 and the shaft locking slider 8 are fixed in position by the locking bolt holes and the locking bolts 9 .

[0030] A shaft locking method of a ship shaft self-locking shaft locking device, comprising the following steps: Step 1: Determine the size and number of each component of the shaft locking device according to the shaft locking torque; Step 2: Use a turning machine to rotate the opening groove 3 of the flange 2 on the shaft system 1 to the position where the shaft needs to be locked; Step 3: Unscrew the locking bolt 9, push the handle 13 to slide the lock shaft slider 8 in the lock shaft slider slideway, and clamp the lock shaft slider 8 in the opening groove 3 of the flange 2 to lock the shaft. At this time, the electronic limit switch 14 changes from the open state to the closed state. This signal is transmitted to the host remote control to interlock with the host. The host cannot be started to achieve protection against misoperation.

[0031] The shaft locking device of the present invention locks the shaft by moving the position of the shaft locking slider 8 so that it engages with the opening groove 3 of the flange 2. At the same time, the closing state signal is transmitted to the host remote control through the electronic limit switch to achieve interlocking with the host and prevent the host from being started by mistake.

[0032] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should be included in the protection scope determined by the claims of the present invention.

Claims

1. A self-locking shaft locking device for a ship shaft system, comprising a shaft locking base and a shaft locking slider arranged on the shaft locking base, Features: The locking shaft base includes a bottom plate, a triangular web plate, and a stop block. There are two stop blocks, which are arranged in parallel on the bottom plate. The stop blocks are fixed to the bottom plate through the triangular web plate. A locking shaft slider slideway is provided between the two stop blocks. A locking shaft slider is provided in the locking shaft slider slideway, and a handle is provided at the end of the locking shaft slider.

2. A self-locking shaft locking device for a ship shaft system according to claim 1, Features: A shaft locking slider slideway is provided between the two stop blocks, and a triangular web is provided on the outer side. Four triangular webs are provided on one stop block, and the triangular webs have equal spacing. One angle side of the triangular web is welded to the bottom plate, and the other right-angle side is welded to the stop block.

3. A self-locking shaft locking device for a ship shaft system according to claim 2, Features: The bottom plate is provided with fixing bolt holes, and the fixing bolt holes are evenly arranged between the triangular webs.

4. A self-locking shaft locking device for a ship shaft system according to claim 1, Features: The two stop blocks are provided with baffles at the handle end of the shaft locking slider, the baffles are fixed by fixing bolts, and the ends of the baffles extend to the slideway of the shaft locking slider.

5. A self-locking shaft locking device for a ship shaft system according to claim 1, Features: The two stop blocks are provided with an electronic limit switch base on the upper surface of the end portion of the handle side of the locking shaft slider, and an electronic limit switch is installed on the electronic limit switch base.

6. A self-locking shaft locking device for a ship shaft system according to claim 1, Features: The two stop blocks and the shaft locking slider are both provided with locking bolt holes of the same size, and the stop blocks and the shaft locking slider are fixed in position through the locking bolt holes and the locking bolts.

7. A shaft locking method for a self-locking shaft locking device for a ship shaft system according to claim 1, Features: The following steps are involved: Step 1: Determine the size and number of each component of the shaft locking device according to the shaft locking torque; Step 2: Use a turning machine to rotate the opening groove of the flange on the shaft system to the position where the shaft needs to be locked; Step 3: Unscrew the locking bolt, push the handle to slide the lock shaft slider in the lock shaft slider slideway, and clamp the lock shaft slider in the opening groove of the flange to lock the shaft. At this time, the electronic limit switch changes from the open state to the closed state. This signal is transmitted to the host remote control to interlock with the host. The host cannot be started to protect against misoperation.

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