Ship shafting locking device

Abstract

A ship shafting locking device is provided with two vertically-arranged bases, base plates are fixed to the tops of the bases, and locking devices are arranged above the base plates. The locking device comprises a locking disc, fixing plates and a locking plate, the locking disc is connected with the base plate through a locking bolt, a second notch is formed in the locking disc, the fixing plates are perpendicularly fixed to the positions, on the two sides of the second notch, of the locking disc, long-strip-shaped round holes are transversely formed in the centers of the fixing plates, and the locking bolt penetrates through the long-strip-shaped round holes and is fixed through nuts; a locking plate is fixed above the long-strip-shaped round hole, arcs are arranged at the two ends of the bottom of the locking plate, the end close to the second notch is a first arc, the end away from the second notch is a second arc, the first arc is a locking position, and the second arc is a separating position. The device is simple in structure and convenient to operate, and meanwhile, the later maintenance cost of the device is saved; safe operation of the locking device can be guaranteed, and major safety risks brought to a shafting due to rotation caused by misjudgment of a shafting power device are reduced.

Description

Technical Field

[0001] The invention belongs to the field of ship construction and design, and in particular relates to a ship shaft system locking device. Background Art

[0002] With the development of the global economy, in order to optimize the urban gas structure, improve the quality of gas supply and improve the environment, LNG as a clean energy will gradually become the preferred fuel for major modern cities in the world. Therefore, large LNG carriers will become the main direction of the development of the shipbuilding industry.

[0003] LNG carriers usually adopt a dual-shaft design. Under the special working condition that one shaft is running and the other is stopped, it is necessary to install a shaft locking device on the shaft, considering that the stopped shaft will rotate due to the influence of water flow, and the irregular rotation will have an adverse effect on the main engine, bearings and other equipment. Traditional locking devices are designed with hydraulic pressure, and the system is complicated and complex, which greatly increases the equipment procurement cost of the ship and is not convenient for future maintenance. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a ship shaft locking device, which aims to lock the shaft without using a complex structure such as a hydraulic system. The technical solution adopted is:

[0005] A ship shaft locking device comprises two upright bases, a base plate is horizontally fixed on the top of the base, one side of the base plate is provided with an inwardly recessed long strip first notch, the long strip first notches of the two bases are located on the inner side and are symmetrically placed, and a locking device is arranged above the base plate.

[0006] The locking device includes a locking disk, a fixing plate and a locking plate. The locking disk is connected to the base plate through a locking bolt. A second notch is opened at a position of the locking disk corresponding to the first notch. On both sides of the second notch, a fixing plate is vertically fixed on the locking disk. A long circular hole is horizontally opened in the center of the fixing plate. The locking bolt passes through the long circular hole and is fixed by a nut; a locking plate is fixed above the long circular hole. Arcs are opened at both ends of the bottom of the locking plate. The end close to the second notch is the first arc, and the end away from the second notch is the second arc. The first arc is stuck on the outer surface of the locking bolt, and the curvature of the second arc is greater than the outer curvature of the locking bolt.

[0007] A signal generator is fixed on the fixed plate, and the signal generator is connected with the host machine and the turning machine signal.

[0008] The above-mentioned ship shaft locking device, further, the edge of the flange is inserted into the first notch and the second notch, and a plurality of flange grooves are opened at equal intervals on the edge of the flange. When the locking bolt is located inside the circular hole, the locking bolt body is located in the flange groove.

[0009] The above-mentioned ship shaft locking device further comprises the base plate and the locking plate being connected by bolts, and a circle of bolts is arranged along the edge of the base plate.

[0010] The above-mentioned ship shaft locking device further has a top screw arranged on the lock disk, and the bottom of the top screw is nailed to the base plate.

[0011] The above-mentioned ship shaft locking device further has an adjustment pad arranged between the locking plate and the base plate.

[0012] In the above-mentioned ship shaft locking device, further, the adjustment pad and the welding pad are steel plates.

[0013] The above-mentioned ship shaft locking device further has a reinforcing bracket fixed on the outer side of the fixing plate.

[0014] The mechanical structure of the present invention, which is composed of a mechanical lock disk and a mechanical lock as main components, is simple to manufacture and easy to operate, while saving the future maintenance and servicing costs of the equipment; the electrical signal system composed of sensors can ensure the safe operation of the locking device, reducing the significant safety risks to the shaft system caused by the misjudgment of the shaft system power device and the rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view structural schematic diagram of the present invention;

[0016] Figure 2 yes Figure 1 A structural diagram from the middle A perspective, the locking device is not shown in the figure;

[0017] Figure 3 is a schematic diagram of the side structure of the locking device;

[0018] Figure 4 2. It is a schematic diagram of the locking plate structure;

[0019] Among them, 1-flange, 2-fixing plate, 3-locking plate, 4-top screw, 5-bolt, 6-base, 7-locking bolt, 8-base plate, 9-adjusting pad, 10-signal generator, 11-flange groove, 12-locking disk. DETAILED DESCRIPTION

[0020] The present invention will be further described in conjunction with the accompanying drawings.

[0021] like Figure 1 , 2 A ship shaft locking device shown has two upright bases, with a base plate fixed horizontally on the top of the base. One side of the base plate has a long first notch recessed inward. The long first notches of the two bases are located on the inner side and are placed symmetrically. A locking device is arranged above the base plate.

[0022] The locking device includes a locking disk, a fixing plate and a locking plate. The locking disk is connected to the base plate through a locking bolt. A second notch is opened at a position of the locking disk corresponding to the first notch. On both sides of the second notch, a fixing plate is vertically fixed on the locking disk. A long circular hole is horizontally opened in the center of the fixing plate. The locking bolt passes through the long circular hole and is fixed by a nut; a locking plate is fixed above the long circular hole. Arcs are opened at both ends of the bottom of the locking plate. The end close to the second notch is the first arc, and the end away from the second notch is the second arc. The first arc is stuck on the outer surface of the locking bolt, and the curvature of the second arc is greater than the outer curvature of the locking bolt.

[0023] A signal generator is fixed on the fixed plate, and the signal generator is connected with the host machine and the turning machine signal.

[0024] The inner side of the locking plate is the locking position, and the outer side is the disengaged position. When the locking bolt is in the disengaged position, the signal generator does not output a signal, and the host and the turning machine can operate freely. When the locking bolt is in the locking position, the signal generator outputs a signal to the host and the turning machine, and the host and the turning machine are not allowed to operate.

[0025] After removing the locking plate, move the locking bolt position to change the locking and disengaging states.

[0026] The present invention greatly simplifies the physical structure of the traditional locking device by designing a new shaft locking device. On the premise of satisfying the shaft locking function, it saves the cost of future maintenance and reduces the equipment procurement cost of the ship.

Claims

1. A ship shaft locking device, characterized in that: There are two vertically placed bases (6), a base plate (8) is horizontally fixed on the top of the base, one side of the base plate is provided with a long strip first notch recessed inwards, the long strip first notches of the two bases are located on the inner side, and are symmetrically placed, and a locking device is arranged above the base plate; The locking device comprises a locking plate (12), a fixing plate (2) and a locking plate (3), wherein the locking plate is connected to the base plate via a locking bolt (7), a second notch is formed at a position of the locking plate corresponding to the first notch, fixing plates are vertically fixed on the locking plate on both sides of the second notch, a long circular hole is horizontally formed in the center of the fixing plate, and the locking bolt passes through the long circular hole and is fixed by a nut; a locking plate is fixed above the long circular hole, and arcs are formed at both ends of the bottom of the locking plate, the end close to the second notch is the first arc, and the end away from the second notch is the second arc, the first arc is clamped on the outer surface of the locking bolt, and the curvature of the second arc is greater than the outer curvature of the locking bolt; A signal generator (10) is fixed on the fixed plate, and the signal generator is connected with the host machine and the turning machine signal.

2. A ship shaft locking device according to claim 1, characterized in that: The edge of the flange (1) is inserted into the first notch and the second notch, and a plurality of flange grooves (11) are formed at equal intervals on the edge of the flange. When the locking bolt is located inside the circular hole, the locking bolt body is located in the flange groove.

3. A ship shaft locking device according to claim 1, characterized in that: The base plate is connected to the locking plate via bolts (5), and a circle of bolts is arranged along the edge of the base plate.

4. A ship shaft locking device according to claim 1, characterized in that: A top screw (4) is arranged on the lock plate, and the bottom of the top screw is nailed on the base plate.

5. A ship shaft locking device according to claim 1, characterized in that: An adjustment pad (9) is arranged between the lock plate and the base plate.

6. A ship shaft locking device according to claim 5, characterized in that: The adjusting pad is a steel plate.

7. A ship shaft locking device according to claim 1, characterized in that: A reinforcing bracket is fixed on the outside of the fixed plate.

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